JP6099151B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner. More specifically, in an air conditioner combining an air conditioner and a radiant heat exchanger, the radiant heat exchanger has a function of covering a heating element and can promote convection of room air, which is uncomfortable for the human body. The present invention relates to an apparatus that can efficiently perform indoor air conditioning by making air-conditioning startup faster until comfort can be obtained, and making room air uniform in a short time without giving a draft feeling. .

Indoor air conditioning in general homes and offices is generally performed using packaged air conditioners such as room air conditioners and multi air conditioners. On the other hand, unlike an air conditioner where the indoor unit is a forced convection type, there is no drive sound or wind noise from the fan, and the heat radiation heat exchange unit does not give an unpleasant draft feeling to the human body due to cold air or hot air Has also been used. Furthermore, an air conditioner in which a radiant heat exchanger is incorporated in a refrigerant circuit of a refrigeration cycle of an air conditioner has been proposed.

As such an air conditioner, there is an air conditioner described in Patent Document 1, for example.
The conventional air conditioner includes a refrigerant circuit <10> in which a compressor <11>, an indoor heat exchanger <13>, and an outdoor heat exchanger <15> are pipe-connected to perform a refrigeration cycle by refrigerant circulation, Indoor heat exchanger <13>
It has a heating operation function in which hot air exchanged with the refrigerant is supplied indoors.

The refrigerant circuit <10> includes a radiation panel <12> that is connected between the discharge side of the compressor <11> and the indoor heat exchanger <13> and absorbs heat from the refrigerant to generate radiant heat indoors. The high pressure of the cycle is configured to be higher than the critical pressure of the refrigerant.
As a result, the high temperature region of the refrigerant can be increased, higher temperature radiant heat is supplied from the radiant panel <12> to the room, and the amount of hot air in the indoor heat exchanger <13> is reduced, resulting in a draft feeling. It is reduced and the heating capacity by radiant heat can be greatly increased.

JP 2005-16919 A

The radiant heat exchanger of the air conditioner of Patent Document 1 has a panel structure called a radiant panel, and (1) a floor-standing type different from the indoor unit (see Embodiment 1, FIG. 2), (2) An integrated floor-standing type (Embodiment 2, FIG. 5) in which a radiation panel and an indoor heat exchanger are housed in one indoor unit.
Three types of ceiling-embedded types (see Embodiment 6 and FIG. 18) in which an indoor heat exchanger is embedded in the casing and a radiation panel is embedded in the center of the grill are described.

In the case of the air conditioning apparatus described in Patent Document 1, the radiation panels of these respective forms are simply arranged with the radiation surface facing the room, and the generation of air convection due to radiant heat is very small. Is mainly performed by a fan that sends out indoor air heated by an indoor heat exchanger. Therefore, if the air conditioning in the room is started up in a short time or the room air is made uniform in a short time, it is necessary to increase the amount of air blown by the fan. Since stirring efficiency is low and time is required, the point of giving an unpleasant draft feeling to the human body has not been sufficiently solved.

Further, in Patent Document 1, there is no particular description that the heat generating part of the radiation panel is covered. Therefore, if the surface of the heat generating part is exposed, it is used when the heat generating part is heated during operation. There is also a problem that there is a risk of burns if the person's hand or body is touched.

The present invention was devised in view of the above points, and in an air conditioner that combines an air conditioner and a radiant heat exchanger, the radiant heat exchanger has a function of covering a heating element, and the indoor air. It is possible to promote convection and prevent unpleasant drafts for the human body, while speeding up the air-conditioning until comfort is achieved, and uniformizing the indoor air in a short time, An object of the present invention is to provide an air conditioner that can efficiently perform air conditioning and a method of operating the air conditioner.

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention includes a refrigerant circuit that performs a refrigeration cycle by piping connection of a compressor, an expansion valve, a flow path switching valve, an indoor heat exchanger, and an outdoor heat exchanger, and circulating a refrigerant. An air conditioner that supplies air heat-exchanged with refrigerant in the inner heat exchanger into a room by a fan, a radiant heat exchanger having a heating element incorporated in the refrigerant circuit of the air conditioner, and a radiant heat exchanger The heating element is sandwiched between the surfaces of the heating element so as to cover the surface, and the inner surface is a reflecting surface that reflects the radiant heat radiated from the heating element and penetrates the inner and outer surfaces. The air conditioner includes a radiant heat passage portion through which radiant heat and air pass, and a rectifying plate that promotes air convection by a chimney effect.

(2) In the present invention, the radiant heat exchanger may be arranged with the heating element piping connected in series to the refrigerant circuit piping.

In this case, the air conditioner has an air conditioner and a radiant heat exchanger, and operates both at the same time. Therefore, for example, when a construction is performed in which a radiation heat exchanger is combined with an existing air conditioner in a general household, it can be the simplest and cheapest means.

(3) The present invention provides a first operation mode for operating the air conditioner and the radiant heat exchanger, a second operation mode for operating only the air conditioner, and a third operation for operating only the radiant heat exchanger. An operation mode switching means for switching each operation mode of the operation mode to any one operation mode automatically or manually may be provided.

In this case, for example, until the air conditioning in the room is started up, the operation is performed in the first operation mode in which the air conditioner and the radiant heat exchanger are operated. Maintaining air-conditioning in the third operation mode that operates only the exchanger, etc.
The most suitable operation mode can be selected as appropriate in accordance with the condition of indoor air conditioning. Therefore, it is possible to perform air conditioning that is comfortable for the user, and it is possible to contribute to energy saving because excessive temperature rise and fall can be suppressed.

(4) The present invention (operating mode switching means 1: 6 valves type)
Each operation mode includes a first operation mode for operating the air conditioner and the radiant heat exchanger, a second operation mode for operating only the air conditioner, and a third operation mode for operating only the radiant heat exchanger. An operation mode switching means for automatically or manually switching to any one of the operation modes, the operation mode switching means comprising: a first pipe connecting the expansion valve and the indoor heat exchanger; A first valve that the pipe has in the path; a second pipe that connects the flow path switching valve and the indoor heat exchanger; a second valve that the second pipe has in the path; A third pipe having one end connected to the second pipe and the other end connected to one end of the pipe of the heating element of the radiant heat exchanger, and a third pipe in the path of the third pipe 3 and one end side of the radiant heat exchanger A fourth pipe connected to the other end side of the body pipe, the other end side being closer to the flow path switching valve than the second valve of the second pipe, and the fourth pipe A fourth valve included in the path, and one end side thereof is connected closer to the flow path switching valve than the second valve of the second pipe, and the other end side is connected to the first valve of the first pipe. A fifth pipe connected to the expansion valve, a fifth valve included in the path of the fifth pipe, and the second pipe including the fourth pipe and the third pipe. You may make it provide the 6th valve | bulb which has in the path | route between connection parts.

In this case, in the air conditioner, when operating the indoor unit and the radiant heat exchanger together with the outdoor unit, the fifth valve and the sixth valve are closed, and the other first valve, second valve, Third
Keep the valve and the fourth valve open.
When the operation of the indoor unit is stopped and only the radiant heat exchanger is operated, the first valve,
The second valve and the sixth valve are closed, and the other third valve, fourth valve, and fifth valve are kept open.
Further, when the operation of the radiant heat exchanger is stopped and only the indoor unit is operated, the third valve, the fourth valve and the fifth valve are closed, and the other first valve and second valve are closed. And keep the sixth valve open.

(5) The present invention (operating mode switching means 2: five valves type)
Each operation mode includes a first operation mode for operating the air conditioner and the radiant heat exchanger, a second operation mode for operating only the air conditioner, and a third operation mode for operating only the radiant heat exchanger. An operation mode switching means for automatically or manually switching to any one operation mode, the operation mode switching means comprising: a first pipe connecting the expansion valve and the indoor heat exchanger; and the flow path switching. A second pipe connecting the valve and the indoor heat exchanger, one end side is connected to the second pipe, and the other end side is connected to one end side of the heating element pipe of the radiant heat exchanger. A third pipe and one end side thereof are connected to the other end side of the pipe of the heating element of the radiant heat exchanger, and the other end side is connected to the indoor side heat from the connection portion of the third pipe of the second pipe. Fourth pipe connected to the exchanger and one end Is connected in the vicinity of the connection part of the fourth pipe of the second pipe, and the other pipe is connected to the first pipe, and the fifth pipe has in its path. A valve and a valve that the second pipe has in a path between a connection portion of the fourth pipe and the third pipe, and whichever of the first pipe and the second pipe Either of them may have a valve in the path, or any one of the third pipe and the fourth pipe may have a valve in the path.

In this case, in the air conditioner, when operating the indoor unit and the radiant heat exchanger together with the outdoor unit, in the path between the valve of the fifth pipe and the connection part of the fourth pipe and the third pipe And the valve of either one of the first pipe and the second pipe or the third pipe and the fourth pipe.
Keep the valve of one of the pipes open.
When the operation of the indoor unit is stopped and only the radiant heat exchanger is operated, if one of the first pipe and the second pipe has a valve, the valve and the fourth The piping of the third
Close the valve in the path between the pipe connections, and if there is a valve in either the third pipe or the fourth pipe, open the valve of the valve and the fifth pipe. Like that.
Furthermore, when the operation of the radiant heat exchanger is stopped and only the indoor unit is operated, the third pipe and the fourth pipe
If there is a valve in one of the pipes, close the valve and the valve in the fifth pipe, and if there is a valve in either the first pipe or the second pipe, The valve in the path between the valve and the connection between the fourth pipe and the third pipe is kept open.

(6) The present invention (operating mode switching means 3: four valves type)
Each operation mode includes a first operation mode for operating the air conditioner and the radiant heat exchanger, a second operation mode for operating only the air conditioner, and a third operation mode for operating only the radiant heat exchanger. An operation mode switching means for automatically or manually switching to any one operation mode, the operation mode switching means comprising: a first pipe connecting the expansion valve and the indoor heat exchanger; and the flow path switching. A second pipe connecting the valve and the indoor heat exchanger, one end side is connected to the second pipe, and the other end side is connected to one end side of the heating element pipe of the radiant heat exchanger. A third pipe and one end side thereof are connected to the other end side of the pipe of the heating element of the radiant heat exchanger, and the other end side is connected to the indoor side heat from the connection portion of the third pipe of the second pipe. Fourth pipe connected to the exchanger and one end Is connected in the vicinity of the connection part of the fourth pipe of the second pipe, and the other pipe is connected to the first pipe, and the fifth pipe has in its path. A valve and a valve that the second pipe has in a path between a connection portion of the fourth pipe and the third pipe, and whichever of the first pipe and the second pipe One of them may have a valve in the path, and either one of the third pipe and the fourth pipe may have a valve in the path.

In this case, in the air conditioner, when operating the indoor unit and the radiant heat exchanger together with the outdoor unit, in the path between the valve of the fifth pipe and the connection part of the fourth pipe and the third pipe And the valve of either one of the first pipe and the second pipe or the third pipe and the fourth pipe.
Keep the valve of one of the pipes open.
Further, when the operation of the indoor unit is stopped and only the radiant heat exchanger is operated, the valve of the one of the first pipe and the second pipe, the fourth pipe, and the third pipe The valve in the path between the pipe connection portions is closed, and the valve of either one of the third pipe and the fourth pipe and the fifth pipe
Keep the piping valve open.
Furthermore, when the operation of the radiant heat exchanger is stopped and only the indoor unit is operated, the third pipe and the fourth pipe
The valve of one of the pipes and the valve of the fifth pipe are closed, and the valve of any one of the first pipe and the second pipe, the fourth pipe, and the third pipe are closed. Keep the valve in the path between the connections open.

(7) The present invention (operating mode switching means 4: one valve type)
Each operation mode includes a first operation mode for operating the air conditioner and the radiant heat exchanger, a second operation mode for operating only the air conditioner, and a third operation mode for operating only the radiant heat exchanger. An operation mode switching means for automatically or manually switching to any one operation mode, the operation mode switching means comprising: a first pipe connecting the expansion valve and the indoor heat exchanger; and the flow path switching. A second pipe connecting the valve and the indoor heat exchanger; one end is connected to branch to the second pipe; the other end is connected to one end of the heating element pipe of the radiant heat exchanger A third pipe connected, one end side is connected to the other end side of the heating element pipe of the radiant heat exchanger, and the other end side is connected to branch to the second pipe. 4 and the second pipe are connected to the third pipe. A valve having a valve in a path between the connection part of the pipe and the connection part of the fourth pipe, and the length of the path including the third pipe, the heating element pipe, and the fourth pipe is It can also be set as the structure currently formed longer than the length of the path | route between the connection part of the said 3rd piping, and the connection part of the said 4th piping.

In this case, when operating the indoor unit and the radiant heat exchanger together with the outdoor unit, the valve included in the path between the connection portion of the third pipe and the connection portion of the fourth pipe is closed.
Further, when the operation of the radiant heat exchanger is stopped and only the indoor unit is operated, a valve provided in the path between the connection portion of the third pipe and the connection portion of the fourth pipe is opened. . This
The refrigerant passing through the second pipe is a third pipe, a heating element pipe, and a fourth pipe that are longer than the path between the connection part of the third pipe branched from the second pipe and the connection part of the fourth pipe. The pipe does not pass through, and passes through the path between the connection part of the third pipe and the connection part of the fourth pipe on the short path side.
Furthermore, when the operation of the indoor unit is stopped and only the radiant heat exchanger is operated, the valve in the path between the third pipe connection part and the fourth pipe connection part is closed. Then, stop the fan of the air conditioner indoor unit. As a result, the indoor unit cannot be air-conditioned simply by the refrigerant passing through the piping of the indoor heat exchanger, and only the radiant heat exchanger is operated.

(8) The present invention (operating mode switching means 5: two or three valves type)
Each operation mode includes a first operation mode for operating the air conditioner and the radiant heat exchanger, a second operation mode for operating only the air conditioner, and a third operation mode for operating only the radiant heat exchanger. An operation mode switching means for automatically or manually switching to any one operation mode, the operation mode switching means comprising: a first pipe connecting the expansion valve and the indoor heat exchanger; and the flow path switching. A second pipe connecting the valve and the indoor heat exchanger, one end side is connected to the second pipe, and the other end side is connected to one end side of the heating element pipe of the radiant heat exchanger. A third pipe, a fourth pipe having one end connected to the other end of the pipe of the heating element of the radiant heat exchanger, and a second pipe connected to the second pipe at the other end; The piping of the third
A valve having in the path between the connection part of the pipe and the connection part of the fourth pipe, and a valve having either or both of the third pipe or the fourth pipe in the path. It can also be set as the structure provided.

In this case, when operating the indoor unit and the radiant heat exchanger together with the outdoor unit, the valve included in the path between the connection portion of the third pipe and the connection portion of the fourth pipe is closed, Either one or both of the pipe and the fourth pipe are opened in the path.
Further, when the operation of the radiant heat exchanger is stopped and only the indoor unit is operated, a valve included in the path between the connection portion of the third pipe and the connection portion of the fourth pipe is opened. Either one or both of the pipe and the fourth pipe are closed in the path. Thus, the refrigerant passes through the second pipe, and does not pass through the third pipe, the heating element pipe, and the fourth pipe.
Further, when the operation of the indoor unit is stopped and only the radiant heat exchanger is operated, the valve included in the path between the third pipe connection part and the fourth pipe connection part is closed, The fan of the indoor unit of the air conditioner is stopped in a state where one or both of the pipe 3 and the fourth pipe have a valve opened in the path. As a result, the indoor unit cannot be air-conditioned simply by the refrigerant passing through the piping of the indoor heat exchanger, and only the radiant heat exchanger is operated.

(9) In the present invention, the heating element has a plurality of pipes, the pipes are connected in parallel to the pipes constituting the refrigerant circuit, the refrigerant flow direction is the vertical direction, and the gas-liquid two-phase during cooling The vapor phase refrigerant may pass from the lower side to the upper side of the heating element pipe during heating so that the refrigerant passes from the upper side to the lower side of the heating element pipe.

In this case, during cooling, since the temperature near the upper ceiling is usually high and the heat energy for re-evaporation is large, heat efficiency is improved by introducing the refrigerant from the upper side of the heating element into the pipe and passing it downward. In the process in which the gas-liquid two-phase refrigerant moves down the pipe by the action of gravity while absorbing heat by being guided to the pipe, it efficiently exchanges heat and changes to a gas-phase refrigerant. Led to the machine. In the parallel type, the upper header and the like can be made larger in cross section than the introduction pipe so that the introduced refrigerant is uniformly distributed to the plurality of branched pipes. In this case, since the upper header or the like has a large cross section (space), re-vaporization is promoted because the pressure is released when the refrigerant enters the upper header or the like.

Further, during heating, the temperature in the vicinity of the lower floor is usually low, and heat exchange efficiency is improved by introducing from the lower part where the temperature difference is large in order to perform heat dissipation by heating. That means
The gas-phase refrigerant is guided to the pipe branched from the lower header or the like, and moves upward through the pipe while condensing and dissipating heat. In that case, since the refrigerant is in a gas phase, gravity hardly acts on the refrigerant, and the refrigerant can move smoothly upward. Moreover, heat exchange by heat dissipation is efficiently performed in the heating element, and a part of the refrigerant is changed into a liquid phase refrigerant by condensation, and is led to an indoor unit as a gas-liquid two-phase refrigerant. The refrigerant is further condensed and dissipated in the indoor unit of the air conditioner, and the refrigerant is guided to the outdoor unit.

(10) In the present invention, the piping of the heating element may be a serpentine tube whose flow direction of the refrigerant connected in series to the piping constituting the refrigerant circuit is vertical.

In this case, when the piping is different from the parallel heating element, the high-temperature and high-pressure gas-phase refrigerant is passed from the lower side to the upper side during heating, and the gas-liquid two-phase refrigerant is passed from the upper side to the lower side during cooling. However, since the refrigerant may be passed from the upper or lower side of the pipe to the other side, the degree of freedom of the pipe is high. In addition, in the process in which the refrigerant repeatedly moves up and down in the pipe, the downward movement due to the gravity action of the gas-liquid two-phase refrigerant and the upward movement in a state where the gas-phase refrigerant is not subjected to gravity are alternately repeated. The circulation of the refrigerant is performed smoothly, and the heat exchange as the evaporator is also performed smoothly.

(11) In the present invention, the piping of the heating element is a snake-like tube in which the flow direction of the refrigerant connected in series to the piping constituting the refrigerant circuit is horizontal, and the gas-liquid two-phase refrigerant is the heating element during cooling. The gas phase refrigerant may pass from the lower side to the upper side of the heating element pipe during heating so that the pipe passes from the upper side to the lower side.

In this case, in the radiant heat exchanger, the heating element has a plurality of pipes as described above, the pipes are connected in parallel to the pipes constituting the refrigerant circuit, and the flow direction of the refrigerant is the vertical direction. It has the same operations and advantages as described above when a high-temperature and high-pressure gas-phase refrigerant is passed from the lower side to the upper side during heating and a gas-liquid two-phase refrigerant is passed from the upper side to the lower side during cooling.

(12) In the present invention, an end member for connecting each rectifying plate is arranged on both side end portions of each rectifying plate to form a cylindrical body having upper and lower portions opened, and the heating element is formed by the cylindrical body. May be included.

In this case, since there are end members at both end portions of each rectifying plate, the flow of air passing between the rectifying plates becomes a more uniform flow, and the chimney effect acts more effectively.

(13) The present invention is a multi-air conditioner in which the air conditioner has a plurality of indoor heat exchangers in which pipes are connected in parallel to the outdoor heat exchanger, and the radiation heat exchanger is It can also be set as the structure which installed one or more corresponding to each of several indoor side heat exchangers.

In this case, since a plurality of indoor heat exchangers can be operated by a single outdoor unit having an outdoor heat exchanger, efficient operation is possible, and each room in a building having a large number of rooms, in particular. Useful for air conditioning in each room.

(14) The present invention may be configured such that the air conditioner is an inverter air conditioner that performs inverter control of the compressor.

In this case, since the output of the compressor can be adjusted in multiple stages or steplessly, finer control of cooling and heating can be performed, and comfort is improved. In addition, the power consumption when operating the air conditioner and the radiant heat exchanger can be finely controlled, which contributes to energy saving.

(15) In the present invention, the pipe of the heating element may be a flat tube having a plurality of flow paths parallel to the longitudinal direction inside, or a tube having a plurality of strips parallel to the longitudinal direction on the inner surface.

In this case, the flat tube has a structure in which each flow path is subdivided into a plurality of parts and the position of each flow path is close to the outer surface while sufficiently securing the area of the outer surface of the pipe that performs heat exchange. As a result, the heat exchange can be performed more efficiently as compared with a circular tube or the like whose center portion is slightly distant from the outer surface. Moreover, since the area of the inner surface of piping becomes wider than a simple pipe body, the pipe | tube which has a some strip | belt part becomes possible more efficient heat exchange.

(16) In the present invention, a ventilation guide member is provided on the upper side or the lower side or the upper side and the lower side of the heating element to guide the air entering and exiting the gap inside the rectifying plate to flow smoothly. It may be configured.

In this case, since the air flow due to the chimney effect of each rectifying plate can be further smoothed by the ventilation guide member, it is possible to contribute to increasing the flow rate of air convected by the radiant heat exchanger in the room.

(17) In the present invention, the surface of the heating element is selected from knurling, alumite processing, coating for heat radiation, coating for emitting far-infrared radiation and deodorizing function, antibacterial function, or adsorption / decomposition function of volatile organic compounds One or more processing or coatings may be applied.

In this case, by performing knurling, anodizing, and heat-dissipating coating, the heat dissipation of the heating element can be improved and heat exchange in the heating element can be performed more efficiently. If the far-infrared emission coating is applied, the far-infrared rays emitted from the heating element can be efficiently controlled in the room in combination with the radiant heat. In addition, by applying a coating having a deodorizing function, an antibacterial function, or an adsorption and decomposition function of a volatile organic compound, the maintenance of the radiant heat exchanger is simplified by these functionalities and can be used comfortably.

(18) The present invention may be configured such that an advertisement or an art image is displayed on the surface of the current plate.

In this case, a current plate having a function as a cover for the heating element can be used as an advertisement panel or a sign. In other words, the radiant heat exchanger has a large presence in the indoor space where it is installed and has a large presence. Therefore, when an advertisement is displayed, it can have a more effective function as an advertisement. In the case of displaying an art image, the interior can be variously produced such as creating a gorgeous space or a space where the user can relax by the art image.

(19) The present invention includes a refrigerant circuit that performs a refrigeration cycle by connecting a compressor, an expansion valve, a flow path switching valve, an indoor heat exchanger, and an outdoor heat exchanger, and circulating a refrigerant to perform the refrigeration cycle, An air conditioner that supplies air heat-exchanged with refrigerant in the inner heat exchanger into a room by a fan, a radiant heat exchanger having a heating element incorporated in the refrigerant circuit of the air conditioner, and a radiant heat exchanger The heating element is sandwiched between the surfaces of the heating element so as to cover the surface, and the inner surface is a reflecting surface that reflects the radiant heat radiated from the heating element and penetrates the inner and outer surfaces. A rectifying plate that has a radiant heat passage section through which radiant heat and air pass and promotes air convection by a chimney effect, a first operation mode that operates the air conditioner and the radiant heat exchanger, and operates only the air conditioner Second
In an air conditioner comprising: an operation mode switching means for automatically or manually switching each operation mode of the third operation mode for operating only the radiant heat exchanger and the third operation mode.
Air conditioning in which only the radiation heat exchanger is operated by stopping the fan of the air conditioner when operating the air conditioner and the radiation heat exchanger in the first operation mode. It is the operation method of an apparatus.

The structure of the radiant heat passage portion is not particularly limited as long as radiant heat (also referred to as radiant heat) and air can pass therethrough. For example, a large number of holes (holes) such as holes formed in a punching metal may be used, or a large number of thin slits may be used. Moreover, the shape of a hole or a slit is not specifically limited, For example, they are circular, an ellipse, various polygons etc. Each of the holes and slits may be connected as through holes, or may be formed separately without being connected. Further, the size of the hole or slit is not particularly limited, but it is preferably a size that does not allow a finger to enter, for example, so that the user cannot touch the heating element or intentionally touch it. In the present specification and claims, the term “radiation” can be rephrased as “radiation”.

The structure of the heating element is, for example, a structure in which a pipe for passing a refrigerant is arranged in a flat plate shape, or a structure in which a pipe for passing a refrigerant is arranged in a cylindrical shape. Further, the shape of the rectifying plate around the side of the heating element is not particularly limited, and is appropriately formed according to the structure of the heating element, such as a circular tube, a square tube, a flat plate, or a curved plate.

The term “chimney effect” in the present specification and claims includes an effect of increasing the flow velocity of air in the gap by forming a rectifying plate in a cylindrical shape and covering all sides of the heating element, for example, It is used in the sense of including the same effect by covering a part of the side of the heating element, such as arranging the current plate on the front and back sides of the heating element.

The term “art image” in the present specification and claims includes the meanings of various artistic expressions such as signs (signs and signs), various designs, pictures, photographs, and the like. The advertisement and the art image are preferably two-dimensional expressions by printing or hand-drawing.

(Function)
The operation of the air conditioner of the present invention will be described.
The radiant heat exchanger is a part of the overall circulation (convection) of the air in the air gap along the heating element (the indoor air in which the radiant heat exchanger is installed) due to the chimney effect of the rectifying plate Including meaning). Moreover, since the rectifying plate has a radiant heat passage portion penetrating the inner and outer surfaces,
When air flows along the heating element at a high speed in the gap, the pressure in the gap decreases (from Bernoulli's theorem), and air is taken into the gap from the radiant heat passage and passes through the gap inside the current plate. The air flow rate is increased and the convection of the room air is further promoted.

The radiant heat exchanger has a chimney effect by the baffle plate and a function to protect the user from the heat of the heating element and condensed water, while the radiant heat radiated from the heating element passes through the radiant heat passage. Since it is directly radiated to the outside, combined with the radiant heat generated when the rectifying plate is heated, it is possible to perform efficient thermal radiation that is the same as or almost the same as when the rectifying plate is not provided.

In other words, the heat radiated from the heating element can be efficiently radiated into the room and used for air conditioning, so the heat transfer by the good indoor air convection and the radiant heat combine to equalize the indoor air conditioning. The air conditioning can be started quickly. That is, the time until the air conditioning is in a comfortable state is relatively short. In addition, because the convection of the indoor air is good, the amount of air blown by the fan of the indoor heat exchanger is not necessary so much, or it is not necessary to operate the fan. Can be eliminated.

In addition, by providing the radiant heat passage part in the rectifying plate, the convection of the room air is further promoted as described above, so that heat exchange by the heating element is performed more smoothly and efficiently, for example, freezing of the heating element during cooling And overheating during heating is less likely to occur. Hereinafter, the operation will be described in detail.

First, when heating a room, the air in the vicinity of the heating element is heated by conduction heat or radiant heat, and an upward air flow is generated along the heating element. As a result, for example, external air flows into the gaps inside each rectifying plate from the gap between the radiant heat exchanger and the floor surface, and is further heated by the heating element while ascending each gap. The flow continues. Further, the flow rate of the flowing air is increased by a so-called chimney effect by providing a flow passage through which air flows between the heating element and the current plate.

The heated air rising in the gap between the heating element and the rectifying plate is discharged to the outside through, for example, a gap between the upper end of the radiant heat exchanger and the ceiling surface. The discharged air has an increased flow velocity due to the chimney effect, and reaches a position considerably away from the radiant heat exchanger along the ceiling surface.
As the air moves, the air exchanges heat with the room air and the ceiling surface, cools and descends and moves to the floor surface side. And it enters in a space | gap from the lower part of a radiation type heat exchanger, is heated with a heat generating body, and raises. In this way, the room air circulates and convects the entire room while being heated by the heating element.

On the other hand, a part of the radiant heat emitted from the heating element passes through each radiant heat passage portion formed in each rectifying plate and moves to the room outside the rectifying plate. The rate at which radiant heat passes through the radiant heat passage portion depends on the aperture ratio of the radiant heat passage portion. In this way, if the radiant heat is transmitted to the user, the user can directly feel the warmth. Radiant heat is effectively used to warm walls, ceilings, floors, etc., and indoor air is indirectly heated by warmed walls, ceilings, floors, etc.

Also, of the radiant heat, the radiant heat that could not pass through each radiant heat passage is reflected by the reflecting surface on the inner surface side of each rectifying plate, and further diffused between the heating elements and the reflecting surfaces of other rectifying plates. Occur.
As a result, part of the radiant heat is released into the room through each radiant heat passage part, and part is released into the room from the upper and lower openings formed by the respective rectifying plates. Furthermore, a part of each rectifying plate is heated to raise the temperature, and radiant heat from each rectifying plate is released into the room.

Thus, according to the radiant heat exchanger, when the room is heated, the room is heated well by the radiant heat together with the heat moving by the convection of air while repeating the reflection and release of the radiant heat, Air conditioning can be performed effectively. In addition, this makes it possible to reduce the amount of air blown from the fan of the indoor heat exchanger of the air conditioner or to stop the fan, and as a result, the feeling of draft caused by the air blown from the fan that the user feels is suppressed. Or the draft feeling can be eliminated.

Also, when cooling indoors, unlike the case of heating, the air is cooled by the heating element, so the air flow along the heating element and each rectifying plate goes from top to bottom and is cooled. The air flow is almost opposite to that in the case of the heating, but the air conditioning of the entire room can be effectively performed and the draft feeling caused by the air blown from the fan can be suppressed. It has the same effect as the case of the heating, such as the point.

Furthermore, the heat generating elements cannot be directly touched by hand due to the structure in which the heat generating elements are built inside the current plates. Therefore, the heating element may become hot during heating with a gas phase refrigerant or the like, but since the user does not touch the heating element by mistake, it is safe for the user. In addition, during cooling, the condensed water condensed on the surface of the heating element is not touched by hands and is hygienic, and the user's clothes and the like are not accidentally wetted by the condensed water. Furthermore, since the heating element itself hardly receives external force, it is possible to prevent the heating element from being deformed or damaged by pressure or impact from the outside.

Accordingly, the strength against external force is not so much required, and any structure having at least the strength capable of withstanding the pressure of the fluid may be used. The choice of materials used for the heating element can be expanded. Moreover, the danger of accidentally hitting the heating element and being injured can be reduced.

In addition, when liquid phase refrigerant or refrigerant gas is used, since the pressure is high, heat is applied to the surface of a metal refrigerant tube or a precision flat tube made of metal having high pressure resistance and good conductivity, such as copper or aluminum. What processed high emissivity can also be used. Since the synthetic resin tube and the carbon fiber tube are relatively lightweight, the weight of the apparatus can be reduced.

Thereby, the burden of the carrying-in work and assembly work of the material in the case of installation work is reduced, and the cost of installation work can be held down. Further, by reducing the weight of the device, for example, the deformation stress during an earthquake is reduced, and the reinforcement work for supporting it can be minimized. in this way,
Various restrictions on the installation are reduced, and the risk of the device falling due to an earthquake after the installation is reduced. Therefore, it can also contribute to user safety.

An air conditioner equipped with a radiant heat exchanger having such an action has a structure in which the radiant heat exchanger directly passes the refrigerant through the heating element, so that it can be started up quickly and a heat radiation effect can be obtained in a short time. In addition,
Adjustment of the room temperature can be easily controlled by using the control of the air conditioner. As a result, a circuit configuration for adjusting the temperature of the air dedicated to the radiant heat exchanger is unnecessary, and the cost of the system can be reduced.

That is, at the time of heating, since the gas-phase refrigerant that has become high temperature and high pressure in the compressor by the refrigeration cycle is first supplied to the radiant heat exchanger, the temperature of the heating element reaches the temperature of the refrigerant in a relatively short time. For example, radiant heat corresponding to the surface temperature of the heating element, such as about 60 ° C. to 80 ° C., is released.

The radiant heat from this radiant heat exchanger can directly affect the user's sensation as described above, so combining with an air conditioner can improve comfort compared to heating with an air conditioner alone. Air conditioning starts up faster. In addition, since radiant heat propagates directly to the floor, wall, ceiling, and human body, warmth can be obtained from the user's feet and it can be felt warm even if the temperature is set low, thus contributing to energy saving. Thereafter, the refrigerant in the gas phase state is sent to the indoor unit serving as a condenser of the air conditioner, and the indoor unit performs heating.

Also, during cooling, the liquid-phase refrigerant liquefied and generated by the outdoor heat exchanger of the outdoor unit by the refrigeration cycle is decompressed by the expansion valve, and the low-temperature gas-liquid two-phase refrigerant generated thereby is Supply to the indoor unit, let the indoor unit act as an evaporator, take the heat of the air and cool it. And
The gas-liquid two-phase refrigerant is sent to the radiant heat exchanger, the heating element of the radiant heat exchanger is operated as an evaporator, and radiant cooling is performed by radiation of cold heat from the heating element.

Thus, in the cooling operation, for example, so-called hybrid operation in which both the air conditioner and the radiant heat exchanger are operated while controlling the air conditioner preferentially is possible, and a conventional radiant panel (radiant heat exchange) is possible. It is possible to improve the slowness of the start-up of the air conditioning as in the case where the air conditioning is performed only with the air conditioner. In addition, due to the effect of subsequent radiant heat (cold heat), the temperature of the floor, walls and ceiling gradually decreases, and these synergistically act on the user's experience, so comfort can be obtained even when the air conditioner is weakly operated. .

Moreover, the problem in the operation | movement of the radiation cooling in a refrigerating cycle can be improved at the time of cooling. That is, the air conditioner uses an indoor unit of an air conditioner as an evaporator, and the gas-liquid two-phase refrigerant that is heated by the heat of the room air to become a partial liquid phase is, for example, about 7 ° C to 15 ° C. Since this refrigerant is passed through the heating element of the radiant heat exchanger, the heating element does not freeze. Furthermore, since the evaporation of the refrigerant is promoted by warming, the vaporized refrigerant is sufficiently vaporized and introduced into the compressor as the gas phase refrigerant, and the load on the compressor is reduced. It can contribute to extending the life of the compressor and can also contribute to energy saving.

Furthermore, the radiant heat exchanger provides airless and silent air-conditioning functions, which reduces the temperature unevenness of the walls, floors, and ceiling by the amount of convection of the room air, and reduces the airflow from the indoor unit fan. Even if lowered, sufficient comfort can be obtained, so that an uncomfortable draft feeling due to a large air flow from the indoor unit of the air conditioner can be suppressed. Accordingly, it is possible to contribute to suppressing the operation of the fan of the indoor unit, the life of the motor of the fan is extended, and the life of the indoor unit can be extended.

The air conditioner is a so-called hybrid air conditioner in which a radiant heat exchanger installed indoors is incorporated into the refrigeration cycle of the air conditioner. By operating a normal air conditioner using a controller, it is possible to control the operation of a multifunctional air conditioner such as a dry operation, an air purifying function such as a filter function, or a humidifying function, and an operation control of a radiant heat exchanger. . Furthermore, in energy-saving operation with a low load, the refrigerant may be routed only through the outdoor unit and the radiant heat exchanger without passing through the indoor unit of the air conditioner. It can be used only for the function of sensing the temperature of the outdoor unit and controlling the outdoor unit.

The present invention relates to an air conditioner that combines an air conditioner and a radiant heat exchanger. The radiant heat exchanger has a function of covering a heating element and can promote convection of room air, which is uncomfortable for the human body. An air conditioner that can efficiently air-condition indoors by making the air-conditioning start up quickly until comfort is achieved, and making room air uniform in a short time, without giving a draft feeling. And the operating method of an air conditioning apparatus can be provided.

It is a schematic explanatory drawing which shows 1st Embodiment of the air conditioning apparatus of this invention. It is a block diagram of the air conditioning apparatus of FIG. The air conditioning apparatus of FIG. 1 is shown, (a) is a block diagram at the time of heating, (b) is a block diagram at the time of cooling. 1st Embodiment of a radiation-type heat exchanger is shown, (a) is a front view, (b) is AA sectional drawing in (a). It is front view explanatory drawing of the state which removed the rectifying plate of the front side and back side of a radiation type heat exchanger shown in FIG. The structure of a radiation type heat exchanger is shown, (a) is an BB expanded sectional view in Fig.4 (a), (b) is an expanded cross-sectional view of a vertical pipe, (c) is other piping of a heat generating body. It is sectional drawing which shows an example. It is a schematic explanatory drawing which shows 2nd Embodiment of the air conditioning apparatus of this invention. 2nd Embodiment of a radiation-type heat exchanger is shown, (a) is front view explanatory drawing which notched the rectifying plate of the front side partially, (b) is CC sectional drawing in (a). 3rd Embodiment of a radiation-type heat exchanger is shown, (a) is front view explanatory drawing which notched the rectifying plate of the front side partially, (b) is DD sectional drawing in (a). A 4th embodiment of a radiation type heat exchanger is shown, (a) is front view explanatory drawing which notched a part of front side current plate, and (b) is an EE sectional view in (a). The structure of a radiation type heat exchanger is shown, (a) is FF expanded sectional view in Fig.10 (a), (b) is an expanded cross-sectional view of a vertical pipe. 5 shows a fifth embodiment of a radiant heat exchanger, showing air flow when ventilation guide members are arranged on the upper and lower parts of the heating element, (a) during heating, and (b) during cooling FIG. It is explanatory drawing which shows other embodiment of a radiation-type heat exchanger, and shows the example which represented the advertisement character on the surface of the baffle plate. It is a schematic explanatory drawing which shows 3rd Embodiment of the air conditioning apparatus of this invention. It is a schematic explanatory drawing which shows 4th Embodiment of the air conditioning apparatus of this invention. It is a schematic explanatory drawing which shows 5th Embodiment of the air conditioning apparatus of this invention. It is a schematic explanatory drawing which shows 6th Embodiment of the air conditioning apparatus of this invention. It is the graph which showed the change of the room temperature when driving | running only the air conditioner of an air conditioning apparatus, and when driving | running simultaneously an air conditioner and a radiation type heat exchanger. It is the graph which showed the change of the room temperature at the time of driving | operating only the building multi air conditioner of an air conditioning apparatus, and driving | running simultaneously a building multi air conditioner and a radiation type heat exchanger. It is the graph which showed the change of the power consumption when driving | running only the air conditioner of an air conditioning apparatus, and driving | running simultaneously an air conditioner and a radiation type heat exchanger. It is the graph which showed the change of the power consumption when driving | running only the building multi air conditioner of an air conditioning apparatus, and driving | operating simultaneously a building multi air conditioner and a radiation type heat exchanger.

The present invention will be described in detail based on the embodiments shown in the drawings.
Please refer to FIG. 1, FIG. 2 and FIG. In FIG. 1, for convenience, only the heating element 1 is shown as the radiation heat exchanger R1. In FIG. 3, for convenience of illustration, the following pipes 92, 92a, 92b, 92c
Are collectively shown as a pipe 92, and the valves V1 to V6 are omitted.
In the notation in FIG. 1, EX1 indicates “flow of refrigerant gas during cooling operation”, and EX2 indicates “
The flow of refrigerant gas during heating operation ”is shown. This also applies to FIGS. 14, 15, 16, and 17. In addition, in the notation in FIG. 2, EX3 indicates “fan ON / OFF signal”, and EX
Reference numeral 4 denotes a “valve open / close signal”. Further, in the notation in FIG. 3, EX5 indicates “cold air”, and EX
6 indicates “warm up”.

The air conditioner A1 includes an outdoor unit 90 and an indoor unit 91 incorporated in the refrigerant circuit of the refrigeration cycle.
And a radiant heat exchanger R1 to which the piping of the heating element 1 is connected to the piping 92 and 98 connecting the outdoor unit 90 and the indoor unit 91.

The air conditioner 9 is a known room air conditioner having a cooling / heating function and used in a general household. The air conditioner 9 may be an inverter air conditioner that performs inverter control of the compressor 94, or may be a non-inverter air conditioner that is not inverter controlled. In addition, the point which employ | adopts an inverter air conditioner can perform more efficient air conditioning, and can contribute to energy saving is mentioned later.

As shown in FIGS. 2 and 3, the outdoor unit 90 of the air conditioner 9 includes an outdoor heat exchanger 93 that functions as an evaporator or a condenser, a compressor 94, and a four-way switching valve 95 that is a flow path switching valve. And an expansion valve 96. Reference numeral 930 is a fan of the outdoor heat exchanger 93.
The indoor unit 91 functions as a condenser when the outdoor heat exchanger 93 functions as an evaporator, and performs indoor heat exchange that functions as an evaporator when the outdoor heat exchanger 93 functions as a condenser. A container 97 is provided. Reference numeral 970 is a fan of the indoor heat exchanger 97.

The radiant heat exchanger R1 is connected to the indoor side heat exchanger 97 from the four-way switching valve 95 and passes through the second pipe 92 through which the refrigerant flows. Specifically, the radiant heat exchanger R1 is heated by the compressor 94 during heating (see FIG. 3A). In the path of the pipe 92 through which the high-pressure gas-phase refrigerant flows toward the indoor heat exchanger 97, the following heating element 1
Connected and built-in.
The pipe 98 that is the first pipe is a pipe that sends the gas-phase refrigerant expanded by the expansion valve 96 to the indoor heat exchanger 97 during cooling. In the present embodiment, one radiant heat exchanger R1 is installed, but a plurality of radiant heat exchangers R1 can be connected in series or in parallel (see FIG. 7).
.

Further, as shown in FIG. 1, the other end side of the pipe 92 is the lower header pipe 11 of the heating element 1 described below.
One end side of a pipe 92a which is a third pipe connected to is connected. A valve V3, which is a third valve, is provided in the path of the pipe 92a. One end side of a pipe 92b that is a fourth pipe is connected to the upper header pipe 10 of the heating element 1, and the other end side of the pipe 92b is connected to the pipe 92.
Is connected closer to the indoor unit 91 than the connection portion of the pipe 92a. Also, piping 92
And the pipe 98 are connected by a pipe 92c which is a fifth pipe at the connection position of the pipe 92b. A valve V4 that is a fourth valve is provided in the path of the pipe 92b, and a valve V5 that is a fifth valve is provided in the path of the pipe 92c.

Further, in the path of the pipe 92, a valve V6 that is a sixth valve is provided between the connection part of the pipe 92a and the connection part of the pipe 92b. Further, in the piping 92 and the piping 98, a valve V1 that is a first valve is provided in the piping 98 between the connection portion of the piping 92c and the indoor unit 91, and a valve V2 that is a second valve is provided in the piping 92. Is provided.
The control unit 99 has a temperature sensor S, and the temperature sensor S is arranged at a predetermined measurement point in the room. A valve opening / closing signal is sent to each of the valves V1, V2, V3, V4, V5, and V6 from the control unit 99 via a signal path (shown by a dotted line in FIG. 2). The fan 970 of the indoor heat exchanger 97 is connected to the ON / O of the fan 970 via a signal path from the control unit 99.
FF signal is sent.

Next, the radiant heat exchanger R1 connected to the air conditioner 9 and incorporated in the air conditioner A1 will be described in detail. Reference is mainly made to FIGS.
The radiant heat exchanger R1 includes a heating element 1 arranged in the vertical direction (vertical direction), decorative frames 2 and 2a that support the heating element 1, and heating elements 1 on both sides of the heating element 1. As will be described later, the rectifying plates 3, 3a, 3b on the front side (front side in FIG. 4 (a), left side in FIG. 4 (b)) provided with the required gaps 39, 49 and arranged in the vertical direction, There are rectifying plates 4, 4a, 4b on the back side.

The heating element 1 is fixed inside the wooden decorative frames 2 and 2a. Makeup frame 2,
2a constitutes an end member and is arranged in parallel with each other at a required interval on the left and right sides and in the vertical direction. L plate-like lower fixing members 20 and 21 for fixing to the floor surface 5 are fixed to the inner surface side of the lower ends of the decorative frames 2 and 2a. The material of the decorative frames 2 and 2a is not limited to wood, and for example, a metal such as a synthetic resin or aluminum can be used.

Further, L plate-like upper fixing members 22 and 23 for fixing to the ceiling surface 6 are fixed to the inner surface side of the upper end portions of the decorative frames 2 and 2a. Lower fixing members 20 and 2 in contact with the floor surface 5
The horizontal portion 1 (reference numeral omitted) is flush with the lower ends of the decorative frames 2, 2 a, and the ceiling surface 6
The horizontal portions (reference numerals omitted) of the upper fixing members 22 and 23 in contact with the upper frame are located slightly higher than the upper ends of the decorative frames 2 and 2a.

Between the decorative frames 2 and 2a, a metal heating element 1 made of aluminum, copper, or the like is attached by fixing both ends of the upper header tube 10 to the inner surfaces of the decorative frames 2 and 2a with the fixtures 24 and 25. ing. A reinforcing member 26 is fixed in the horizontal direction at an intermediate portion between the decorative frames 2 and 2a in the vertical direction, and reinforces the strength of the decorative frames 2 and 2a as a frame. The reinforcing member 26 also has a function of fixing the interval between the following vertical tubes 12 of the heating element 1.

The heating element 1 has an upper header pipe 10 and a lower header pipe 11 arranged in parallel with the upper header pipe 10 at a predetermined interval downward. Both ends of the upper header pipe 10 and the lower header pipe 11 are closed in an airtight and liquid tight manner, respectively.
The height at which the upper header tube 10 is arranged is set at a position slightly lower than the upper ends of the decorative frames 2 and 2a as shown in FIG. The height at which the lower header pipe 11 is arranged is
It is set at a position higher than the lower ends of the decorative frames 2 and 2a.

The upper header pipe 10 and the lower header pipe 11 are connected by a large number of vertical pipes 12 provided in parallel with each other at a required interval, and the upper header pipe 10, the lower header pipe 11 and the vertical pipes 12 communicate with each other. As shown in FIG. 6B, each vertical pipe 12 is a metal flat pipe having a plurality of flow paths 120 parallel to the longitudinal direction therein. In the vertical pipe 12, each flow path 120 is subdivided into a plurality while ensuring a sufficient area of the outer surface for heat exchange. Thereby, since the position of each flow path 120 becomes a structure close | similar to an outer surface, respectively, efficient heat exchange is attained.

In the right end portion of the upper header pipe 10 in FIG. 5, the supply / discharge pipe 1 connected to the pipe 92 is provided.
3 is connected in the vertical direction upward. Further, the supply / discharge pipe 14 connected to the pipe 92 is connected to the left end of the lower header pipe 11 in FIG.
The upper and lower ends of the supply and discharge pipes 13 and 14 are extended to a position slightly below the horizontal portion of the upper fixing members 22 and 23. The supply and discharge pipe 14 is connected to the pipe 92a, and the supply and discharge pipe 13 is connected to the pipe 92b. ing. According to this structure, the gas-liquid two-phase refrigerant passes from the upper side to the lower side during cooling and the gas-phase refrigerant passes from the lower side to the upper side during heating.

The upper header pipe 10, the lower header pipe 11 and the surfaces of the vertical pipes 12 are provided with a heat dissipation coating for improving heat dissipation. In addition, the surface of the heating element 1 can be subjected to processing or coating that contributes to heat dissipation, such as knurling, anodizing, or a coating for heat dissipation. Moreover, the coating which contributes to discharge | release of a far infrared ray which contributes to discharge | release of a far infrared ray, or a deodorizing function, an antibacterial function, or the adsorption decomposition function of a volatile organic compound can also be given. These may be employed alone or in combination. Further, a drain pan 15 that is a bowl-shaped water collecting member that is open at the top is disposed slightly below the lower header pipe 11 with both ends fixed between the decorative frames 2 and 2a. A drain pipe 16 is connected to one end side of the bottom of the drain pan 15. Heating element 1 during cooling
Condensed water that has condensed on the surface of the water is dripped onto the drain pan 15 and is appropriately collected and processed through the drain pipe 16.

The rectifying plates 3, 3a, 3b are detachably mounted on the front side of the decorative frames 2, 2a, and the rectifying plates 4, 4a, 4b are also detachably mounted on the back side. Current plate 3,
3a, 3b and baffle plates 4, 4a, 4b, for example, by hooking a plurality of grooves formed in the bent portions on both side edges to the pins formed on the front and back inner surfaces of the decorative frame 2, 2a. Although it is a structure to mount, other well-known attachment means can also be employ | adopted.

The rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b are attached to the upper and lower three stages as a set, and each set as a whole closes the entire width and height between the decorative frames 2, 2 a. It can be a rectangular shape. Gaps 39 and 49 through which air flows are formed between the heating element 1 and the rectifying plates 3, 3 a and 3 b and between the heating element 1 and the rectifying plates 4, 4 a and 4 b. The lowermost rectifying plates 3b, 4b are formed smaller than the other rectifying plates 3, 3a, 4, 4a, and maintenance of the drain pan 15 can be performed by removing them.

The rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b are made of aluminum, and a large number of radiant heat passage holes 30 that penetrate the front and back surfaces that are radiant heat passage portions over almost the entire surface leaving a part of the peripheral edge.
, 40 (see FIG. 8) is formed on a punching metal (or punching board). The inner surfaces of the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b are reflective surfaces 3 that reflect radiant heat.
1 and 41. Each radiant heat passage hole 30 of the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a
The aperture ratio of each radiant heat passage hole 40 of 4b is set to 50% in the present embodiment.

For example, the radiant heat passage hole may be formed only in the rectifying plates 3, 3a, 3b on one side and not in the rectifying plates 4, 4a, 4b on the other side. 3a, 3
It can also be formed only on an arbitrary rectifying plate among b, 4, 4a and 4b.
In the former, it becomes possible to make the radiant heat from the rectifying plates 3, 3 a, 3 b stronger than the rectifying plates 4, 4 a, 4 b, and even when the radiant heat exchanger R 1 is located near the wall surface, the radiant heat is weak. By directing the current plate 4, 4a, 4b side to the wall, the influence of heat on the wall surface can be reduced.

The arrangement and number of the radiant heat passage holes 30 and 40, the shape of the holes, and the aperture ratio are not particularly limited, and can be appropriately set with various designs. In the present embodiment, the reflecting surface 31
41 are embossed in order to promote diffuse reflection of radiant heat to form fine irregularities. Moreover, since the rectifying plates 3, 3a and the rectifying plates 4, 4a are made of aluminum, the heat transfer effect is excellent, and the efficiency of heat exchange with air is further improved.

In addition, for example, a coating having a deodorizing function, an antibacterial function, an adsorption decomposition function of volatile organic compounds (VOC) or the like is applied to the inner surface of the rectifying plates 3b and 4b close to the drain pan 15 to clean the indoor air. Can also be achieved. Such a coating is applied to other parts of the radiant heat exchanger R1, such as the heating element 1, the rectifying plates 3, 3a, and the rectifying plates 4, 4
It can also be applied to the surface of a.

The rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b have the entire peripheral portion protruding from the peripheral edge of the heating element 1, and have a wider surface than the heating element 1 in front view and rear view. The upper ends of the rectifying plate 3 and the rectifying plate 4 are set flush with the upper ends of the decorative frames 2 and 2a, and the lower ends of the rectifying plates 3b and 4b are positioned slightly above the lower ends of the decorative frames 2 and 2a. Is set to

The rectifying plates 4, 4 a, 4 b on the back side of the rectifying plates 3, 3 a, 3 b on the front side and the decorative frames 2, 2 a on the both ends in the width direction are integrated to form an upper opening 27, lower end on the upper end portion. This is a slightly flat rectangular tube having a lower opening 28 in the part. Thus, since the structure surrounding the heating element 1 is a cylinder, the chimney effect that promotes convection of room air is more excellent.

In addition, by setting the size and mounting positions of the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b as described above, radiation heat exchange is performed as shown in FIGS. 4 (a) and 4 (b). R5 on floor 5
And the ceiling surface 6, a lower gap 50 is formed between the floor surface 5 and the lower ends of the rectifying plate 3 b and the rectifying plate 4 b, and between the ceiling surface 6 and the upper ends of the rectifying plate 3 and the rectifying plate 4. An upper gap 60 is formed at the end.

(Function)
With reference to FIG. 1 thru | or FIG. 6, the effect | action of the air conditioning apparatus A1 provided with the radiation type heat exchanger R1 is demonstrated.

In the air conditioner A1, when operating the indoor unit 91 and the radiant heat exchanger R1 together with the outdoor unit 90, the valves V5 and V6 are closed and the other valves V1 are controlled by the control unit 99.
, V2, V3, and V4 are opened.
Further, when the operation of the indoor unit 91 is stopped and the radiation heat exchanger R1 is operated, the valves V1, V2, and V6 are closed, and the other valves V3, V4, and V5 are opened.
Furthermore, if the valves V3, V4, V5 are closed and the other valves V1, V2, V6 are opened, the operation of the radiant heat exchanger R1 can be stopped and only the indoor unit 91 can be operated. Also,
The operation of each of the valves V1 to V6 can be performed automatically by the control unit 99, or can be performed manually.
Other variations of the piping and valve configuration as the operation mode switching means will be described later.

(Operation of radiation type heat exchanger R1)
The radiant heat exchanger R1 of the air conditioner A1 is fixed to the floor surface 5 by the lower fixing members 20, 21 at a position slightly separated from the wall surface 8, and fixed to the ceiling surface 6 by the upper fixing members 22, 23. And installed indoors.
As shown in FIG. 1, the supply / exhaust pipe 14 and the supply / exhaust pipe 13 of the heating element 1 of the radiant heat exchanger R1 are connected to the pipe 9
2 are connected to the pipes 92a and 92b connected to the second pipe 92a and 92b.

When the room is heated by the radiation heat exchanger R1, the heating element 1 is heated by supplying a high-temperature gas-phase refrigerant to the heating element 1 from the supply / discharge pipe 14. At this time, the gas-phase refrigerant passes from the lower side to the upper side of each vertical pipe 12 (see FIG. 5), and the air near the floor surface 5 below the room where the temperature is lower and the temperature difference is large is first Since it heats, heat exchange efficiency is good and effective heating can be performed. Further, the gas-phase refrigerant is guided to each vertical pipe 12 branched from the lower header 11 and moves upward while condensing and dissipating heat. In that case, since the refrigerant is in a gas phase, gravity hardly acts on the refrigerant, and the refrigerant can move smoothly upward.

In addition, heat exchange with the air by heat radiation of the heating element 1 is also efficiently performed, and the refrigerant partially changes into a liquid phase refrigerant due to condensation, and is led to the indoor unit 91 as a gas-liquid two phase refrigerant. And the refrigerant is
The refrigerant is further condensed and radiated by the indoor heat exchanger 97 of the indoor unit 91, and the refrigerant is guided to the outdoor heat exchanger 93 of the outdoor unit 90.
In this way, the air in the vicinity of the heating element 1 is heated by the radiant heat, and an upward air flow from the bottom along the heating element 1 occurs. In the following description of the air flow, for convenience, FIG.
Reference is made to 2 (a).

As a result, external air flows from the gap 50 on the floor 5 side through the lower opening 28 between the rectifying plate 3b and the rectifying plate 4b. The air that has flowed into the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a,
As the air is further heated by the heating element 1 while ascending the gaps 39 and 49 inside 4b, the upward air flow is continued. Further, current plates 3, 3a,
Since the flat rectangular tube body is formed by 3b, the current plates 4, 4a and 4b and the decorative frames 2 and 2a, the chimney effect ensures a sufficient flow rate for convection of the room air. The

The heated air rising through the gaps 39 and 49 passes through the upper opening 27 between the rectifying plate 3 and the rectifying plate 4 and is discharged to the outside from the gap 60 on the upper ceiling surface 6 side. The discharged air has an increased flow velocity due to the chimney effect, and reaches a position that is considerably away from the radiant heat exchanger R <b> 1 along the ceiling surface 6. In addition, the air exchanges heat with room air along with this movement, cools and descends, moves to the floor 5 side, enters again from the lower part of the radiant heat exchanger A1, and is heated by the heating element 1 and rises. . In this way, the room air circulates throughout the room while being heated by the heating element 1, and convection is promoted.

On the other hand, a part of the radiant heat radiated from the heating element 1 (in this embodiment, since the opening ratio of the radiant heat passage holes 30 and 40 is 50%, the passing ratio is the lower opening 28 and the upper opening. In consideration of what passes through the portion 27, it seems that it is about 50% of the total radiant heat).
3b and the rectifying plates 4, 4a and 4b, the respective radiant heat passage holes 30 and 40, and then discharged into the room. Thereby, the radiant heat is used directly and effectively to raise the temperature of the room air.

Of the radiant heat radiated from the heating element 1, the radiant heat that could not pass through the radiant heat passage holes 30, 40 is generated on the inner surfaces of the rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b. Reflected by the reflecting surfaces 31 and 41, irregular reflection occurs between the heating surface 1 and the reflecting surfaces 31 and 41 of other facing rectifying plates. Thereby, a part of the radiant heat is discharged into the room through the radiant heat passage holes 30 and 40, and a part of the lower opening 2 between the rectifying plates 3, 3a and 3b and the rectifying plates 4, 4a and 4b.
8 and the upper opening 27 are discharged into the room. Furthermore, a part of the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b are heated to raise the temperature, and radiant heat from each rectifying plate is released into the room.

Further, when the room is cooled by the radiant heat exchanger R1, the refrigerant is introduced from the upper side of the pipe of the heating element 1 because the temperature in the vicinity of the ceiling 6 is usually high and the heat energy for re-vaporization is large. The heat efficiency is better when it is passed downward. In a parallel type pipe such as the heating element 1, the gas-liquid two-phase refrigerant is directed downwardly through the vertical pipe 12, which is led to the vertical pipe 12 branched from the upper header 10 and absorbs the heat while being combined with the action of gravity. In the process of moving, the heat is efficiently exchanged to change to a gas-phase refrigerant, and the gas-phase refrigerant is guided to the outdoor unit 90.
During cooling, the air flow generated by the radiant heat exchanger R1 is in the opposite direction to that during heating, but the other effects are generally the same as during heating.

As described above, according to the radiant heat exchanger R1 according to the present embodiment, the indoor air can be well convected while repeating the reflection and release of the radiant heat as described above. Heating or cooling is favorably performed by heat and radiant heat moving by convection, and the entire room can be air-conditioned efficiently and effectively.

(Operation of the air conditioner A1)
The air conditioner A1 including the radiant heat exchanger R1 having the above-described functions and functionality operates as follows.
First, during heating, the compressor 94 is heated to a high temperature (for example, 60 to 80 ° C.) by a refrigeration cycle.
Degree), the high-pressure gas-phase refrigerant passes through the four-way switching valve 95, and first, the radiation heat exchanger R1.
To be supplied. Thereby, the temperature of the heating element 1 reaches the temperature of the refrigerant in a relatively short time, and the radiant heat exchanger R1 emits radiant heat according to the surface temperature of the heating element 1.

Since the radiant heat from the radiant heat exchanger R1 can directly affect the user's feeling, the air conditioner 9 alone can be coupled with the convection of the indoor air being promoted by the radiant heat exchanger R1 as described above. Compared with the case where heating is performed, the start-up of air conditioning until comfort is obtained is quicker. Moreover, since radiant heat is directly propagated to the floor surface 5, the wall surface 8, the ceiling surface 6, or the human body, warmth is obtained from the feet, and even if the temperature is set low by adjusting the air conditioner 9, it feels warm. It will save energy.

And the gaseous-phase refrigerant | coolant which passed through the radiation type heat exchanger R1 is sent to the indoor unit 91 which becomes a condenser as a high-temperature and high-pressure gaseous-phase refrigerant whose temperature has decreased by about 5 to 10 ° C. due to heat radiation. Performs heat exchange with room air by the indoor side heat exchanger 97, and the refrigerant condenses and dissipates heat to perform heating.

Further, at the time of cooling, switching to the four-way switching valve 95 results in a refrigeration cycle opposite to that at the time of heating. That is, the liquid-phase refrigerant that has been liquefied and generated heat by the outdoor heat exchanger 93 of the outdoor unit 90 is decompressed and expanded by the expansion valve 96, and the low-temperature gas-liquid two-phase refrigerant generated thereby is first used as the indoor unit of the air conditioner 9. 91, the indoor unit 91 is caused to act as an evaporator, and heat is taken from the indoor air to perform cooling. Then, the refrigerant in the gas-liquid two-phase state is sent from the indoor unit 91 to the radiant heat exchanger R1, and the radiant heat exchanger R1 acts as an evaporator, and the refrigerant is re-vaporized to remove heat from the room air and generate heat. Radiant cooling is performed by radiation of cold heat from the body 1.

By re-evaporating the refrigerant by heat exchange with room air by the radiant heat exchanger R1, the temperature of the heating element 1 further decreases. Further, the refrigerant is completely vaporized, and the pressurized refrigerant is compressed by the compressor 94.
However, since the pressure of the gas-phase refrigerant is high, the load on the compressor 94 is relatively light. Then, by sending the refrigerant as a high-temperature and high-pressure gas-phase refrigerant to the outdoor heat exchanger 93 that is a condenser, it is possible to efficiently condense at a lower temperature while reducing the load on the compressor as described above. The efficiency of the air conditioner 9 as a heat pump is also increased, which saves energy.

Further, the compressor 94 reduces the burden on the compressor 94 by sucking the low-temperature and low-pressure gas-phase refrigerant whose vaporization has been promoted, which also saves energy. In short, the air conditioner A1 is a heat pump for the air conditioner 9 that effectively uses the heat energy that has conventionally been wasted without being used for air conditioning by employing the radiant heat exchanger R1. The efficiency of

That is, since the indoor heat energy can be consumed for the phase change of the refrigerant and the temperature of the indoor air can be lowered, the gas-liquid that has been returned to the compressor 94 with the latent heat energy remaining until now. It becomes possible to use the unused energy of the two-phase refrigerant, and the efficiency increases accordingly. Furthermore, since the gas-liquid two-phase refrigerant is evaporated and re-vaporized in the radiant heat exchanger R1, it is supplied in a state where the pressure is increased as a low-temperature gas before being supplied to the compressor 94. At the same time that the operation of the compressor 94 is aided, the backflow of the liquid phase of the refrigerant is suppressed, and the compressor 9
4 lifespan can be extended. Further, the volume of the gas-liquid separator (the accumulator) can be reduced to reduce the size.

Further, in the cooling operation, a so-called hybrid operation in which the air conditioner 9 is preferentially moved out of the air conditioner 9 and the radiant heat exchanger R1 can be performed, and the delay of the rise of the air conditioner by the conventional radiation panel is improved. be able to. Further, the temperature of the floor surface 5, the wall surface 8, and the ceiling surface 6 is gradually lowered by the action of the radiant heat (cold heat) thereafter, and the radiant heat from these acts synergistically and acts on the user's experience. Comfort can also be obtained as driving.

In the operation of the air conditioner A1, the above operation modes, that is, (1) the mode in which the air conditioner 9 and the radiant heat exchanger R1 are operated simultaneously, (2) the operation of the radiant heat exchanger R1 is stopped, (4) For a mode in which only the air conditioner 9 is operated, and (3) a mode in which the operation of the air conditioner 9 is stopped and only the radiant heat exchanger R1 is operated, as well as a mode in which only the radiant heat exchanger R1 is operated. There is also a method of stopping (stopping) the fan 970 on the indoor unit 91 side of the air conditioner 9 while the air conditioner 9 and the radiant heat exchanger R1 are in operation.

The operating state and operation of the air conditioner A1 in the case of (4) above will be described.
In the air conditioner A1, the valves V5 and V6 are closed under the control of the control unit 99,
The other valves V1, V2, V3, and V4 are opened, and a hybrid operation is performed in which the air conditioner 9 and the radiant heat exchanger R1 are simultaneously operated. Then, when the indoor air conditioning is complete and the room temperature reaches the set temperature, the fan 970 on the indoor unit 91 side is stopped.

When air conditioning is performed using only the air conditioner, during cooling, when the room temperature reaches the set temperature, in order to maintain the set temperature, an energy-saving operation is performed using both the refrigeration cycle and the fan. And the refrigeration cycle is also stopped. In other words, when the fan is stopped, the indoor heat exchanger does not function as an evaporator, so the refrigeration cycle must be stopped.

If the fan is blown while the refrigeration cycle is stopped in order to maintain the set temperature, it will cause an unpleasant wind with high humidity due to the moisture condensing on the evaporator, which will adversely affect the indoor air that is being cooled. Will be affected. In addition, the operation of repeatedly operating and stopping the fan and the refrigeration cycle repeatedly starts the refrigeration cycle that consumes a large amount of power, and thus consumes a lot of wasted energy.

On the other hand, the air conditioning apparatus A1 maintains the refrigeration cycle because the non-powered radiant heat exchanger R1 operates as an evaporator during cooling even when the fan 970 of the indoor unit 91 is stopped. can do. Thereby, air conditioning apparatus A1 can perform the energy saving operation which drives only the radiation type heat exchanger R1 substantially and maintains comfort.

Further, by stopping the fan 970, there is no motor noise or wind noise, quietness can be obtained, and an unpleasant draft feeling or excessive cooling due to air blown by the air conditioner 9 (cold air) can be prevented.
Furthermore, as described above, the heat transfer due to the radiant heat from the radiant heat exchanger R1 lowers the temperature of the floor wall ceiling, human body, fixtures, etc., and the temperature unevenness is reduced in the upper and lower parts of the room to improve comfort. It is.

Since radiant heat directly affects the sensation, it feels cooler even at the same room temperature. Moreover, since the ventilation of the air conditioner 9 can be stopped as described above, by performing such control, power consumption is reduced, which can contribute to energy saving. Furthermore, the indoor air can be dehumidified by the cooling action of the heating element 1, and comfort can be obtained by reducing the humidity.

In addition, when air conditioning is performed only with an air conditioner, during heating, when the room temperature reaches the set temperature, in order to maintain the set temperature, a refrigeration cycle and a fan are used in combination, and energy saving operation is performed to maintain the temperature. Eventually, the fan is stopped and the refrigeration cycle is also stopped. In other words, if the fan is stopped, the indoor heat exchanger does not function as a condenser, so the refrigeration cycle must be stopped.

If air is blown by a fan while the refrigeration cycle is stopped in order to maintain the set temperature, the temperature with an uncomfortable draft feeling becomes a low wind, which adversely affects the heated indoor air. In addition, the operation of repeating the operation and stop of the fan and the refrigeration cycle repeats the start-up of the refrigeration cycle that consumes a large amount of power. is there.

On the other hand, the air conditioner A1 maintains the refrigeration cycle because the non-powered radiant heat exchanger R1 operates as a condenser during heating even when the fan 970 of the indoor unit 91 is stopped. Can do. Thereby, air conditioning apparatus A1 is substantially radiant heat exchanger R1.
It is possible to perform energy-saving driving that keeps comfort by driving only.

Further, by stopping the fan 970, there is no motor noise or wind noise, quietness can be obtained, and an uncomfortable draft feeling or excessive cooling due to air blown by the air conditioner 9 (hot air) can be prevented.
Furthermore, the heat transfer due to the radiant heat from the radiant heat exchanger R1 raises the temperature of the floor wall ceiling, the human body, the fixtures, etc., and the temperature unevenness in the upper and lower sides of the room is reduced, improving the comfort. Same as the case. In addition, since radiant heat acts directly on bodily sensation, it feels warmer even at the same room temperature.
Such a control in which the air conditioner and the radiant heat exchanger are simultaneously operated to perform the hybrid operation, and the fan of the air conditioner is stopped from that state to substantially operate only the radiant heat exchanger will be described later. The same can be done with the air conditioners A2, A3, A4, A5 and A6.

In the operation of the air conditioner A1, cooling and heating using only the air conditioner 9 and cooling and heating using the air conditioner 9 and the radiant heat exchanger A1 were performed, and PMV was evaluated for each. PMV (Predicted Mean Vote) is an expected average thermal sensation declaration, a theory published by Professor Fanger of the Danish Institute of Technology, and an index of thermal sensation felt by humans. By calculating the PMV value, the comfort level for a combination of six elements (air temperature, average radiation temperature, wind speed, relative humidity, clothing amount, metabolic rate) related to the temperature environment can be obtained.

The calculation formula of PMV is as follows.

PMV = (0.303e-0.036M + 0.028) × M-W-Ed-Es-Ere-Cre-RC)

M: Metabolism (W / m ² ) Ere: Latent heat loss due to breathing (W / m ² )
W: Mechanical work (W / m ² ) Cre: Sensible heat loss due to breathing (W / m ² )
Ed: Insensitive steaming (w / m ² ) R: Radiant heat loss (W / m ² )
Es: Evaporative heat loss from the skin surface (w / m ² )
C: Convective heat loss (W / m ² )

Summer 0.6 (short sleeves) and 1.1 (chair seat),
Assumes winter seasons 1.0 (backs) and 1.1 (chairs).
(conditions)
Air conditioner cooling (room temperature 24.2 ℃: globe temperature 27 ℃: wind speed 0.10m / s: humidity 52.8%)
Air conditioner + radiant cooling (room temperature 24.2 ° C: globe temperature 26 ° C: wind speed 0.10m / s: humidity 51.6%)
Air conditioner heating (room temperature 30.6 ° C: globe temperature 31 ° C: wind speed 0.10m / s: humidity 40.0%)
Air conditioner + radiant heating (room temperature 30.6 ° C: globe temperature 31.8 ° C: wind speed 0.10m / s: humidity 41.9%
)

The PMV evaluation is expressed as a numerical value from −3 to +3, with the PMV value ± 0 being in a neutral state. When the numerical value is larger, the evaluation is warmer or hotter. When the numerical value is smaller, is it cooler? It becomes evaluation that feels cold.
As an index, -3: cold, -2: cool, -1: slightly cool, ± 0: neither, 1: slightly warm, 2: warm, 3: hot.

(Results during cooling)
Cooling by air conditioner only ... PMV = 0.25
Cooling with air conditioner and radiant heat exchanger ... PMV = 0.09
As described above, when the air conditioner 9 and the radiant heat exchanger R1 are operated in conjunction with each other, the numerical value is lower than that of the air conditioner single operation, and the cooler feeling is felt.
This is also considered to be due to a decrease in humidity due to cooling radiation (endothermic action) and dehumidifying action of the radiation heat exchanger R1 during cooling. That is, the moisture condensed on the surface by heat exchange with the heat generating element 1 by the cooling and radiating action of the radiant heat exchanger R1 and the flow of air is collected in the drain pan 15, and the moisture is discharged outdoors. It seems that the comfort of the two improves together.

(Results when heating)
Heating by air conditioner only ... PMV = 1.99
Heating by air conditioner and radiant heat exchanger ... PMV = 2.10
Thus, the result of operating the radiant heat exchanger in conjunction with the air conditioner was higher than the single operation of the air conditioner, and felt warmer.

Further, during cooling, the indoor unit 91 of the air conditioner 9 is used as an evaporator, and the refrigerant that has been heated by the heat of the room air to become a partial liquid phase (gas-liquid two-phase) is, for example, about 7 to 15 ° C. Since the refrigerant is passed through the heating element 1 of the radiant heat exchanger R1, the heating element 1 does not freeze. Furthermore, since the refrigerant is accelerated and heated sufficiently by being heated by the heating element 1 of the radiant heat exchanger R1, the load on the compressor 94 is reduced and the life of the compressor 94 is reduced. It can contribute to extension and save energy.

In the air conditioner A1, the temperature unevenness of the floor surface 5, the wall surface 8, and the ceiling surface 6 is reduced by the amount that the function of no wind and silent radiant cooling and heating by the radiant heat exchanger R1 is exhibited, and the air volume of the indoor unit 91 is reduced. Since comfort is sufficiently obtained even if the air pressure is lowered, an unpleasant draft due to a large air volume from the indoor unit 91 can be suppressed. Thereby, it becomes possible to suppress the operation of the fan 970 of the indoor heat exchanger 97 on the indoor unit 91 side, the life of the motor of the fan 970 is extended, and the life of the indoor unit 91 can be extended. .

Please refer to FIG.
The air conditioner A2 includes a multi air conditioner 9a that is frequently used in stores and the like, and two radiant heat exchangers R1. The multi air conditioner 9a has an outdoor unit 90a and two indoor units 91a and 91b installed in each room connected in parallel to the outdoor unit 90a. Moreover, each radiant heat exchanger R1, R1 is installed between the floor 5 and the ceiling 6 like the radiant heat exchanger R1 of the air conditioner A1.

In the present embodiment, one radiant heat exchanger is installed per indoor unit, but a plurality of radiant heat exchangers may be installed in series or in parallel per indoor unit.
The air conditioner A2 is different from the air conditioner A1 in that it includes two indoor units 91a and 91b and two radiant heat exchangers R1 and R1, respectively.
Since the structure including 91b, the radiant heat exchangers R1 and R1, the pipes 92a, 92b, and 92c that connect them, and the valves V1 to V6 is the same as the air conditioner A1, description of the structure is omitted.

In the present embodiment, one radiant heat exchanger is installed per indoor unit, but a plurality of radiant heat exchangers may be installed in series or in parallel per indoor unit.
The air conditioner A2 includes two indoor units 91a and 91b and a radiant heat exchanger R, respectively.
1, which differs from the air conditioner A1 in that it has R1, but the operation method and operation of the indoor unit 91a and the radiant heat exchanger R1 and the indoor unit 91b and the radiant heat exchanger R1 in each room are as follows. Since it is substantially the same as the indoor unit 91 and the radiant heat exchanger R1 of the air conditioner A1, the description of the operation method and operation will be omitted.

Please refer to FIG.
The radiant heat exchanger R1 can be replaced by a radiant heat exchanger R2 shown in FIG.
The radiant heat exchanger R2 is a radiant heat exchanger, except that the heating elements 1a and 1b whose piping is in series are different from the heating element 1 in which the radiating heat exchanger R1 has a parallel piping. It has almost the same structure as R1. In FIGS. 8A and 8B, the same parts as those of the radiation heat exchanger R1 are denoted by the same reference numerals, and the description of the structure of those parts is omitted.

The heating elements 1a and 1b are provided on the front side and the back side of the radiant heat exchanger R2 with a slight gap and have the same structure. At the upper ends of the decorative frames 2 and 2a, a suspension beam member 19 is provided.
Is built. The heating elements 1a and 1b are formed of the same flat tube as the vertical tube 12, and are serpentine tubes having a number of U-shaped folded portions (reference numerals omitted) at the same height at the upper and lower ends.
The vertical pipe 12 of the heating element 1 and the serpentine pipes of the heating elements 1a and 1b have a pipe body 12a (see FIG. 6C) or a strip having a plurality of strips 121 parallel to the longitudinal direction on the inner surface. It can also be formed of a tubular body in which no part is formed.

The upper folded portions of the heating elements 1 a and 1 b are suspended from the suspension beam member 19 via a number of suspension tools 190. Both end sides of the serpentine pipes of the heating elements 1a and 1b pass through the suspension beam member 19, respectively, and supply / exhaust pipes 13 and 14 are connected to the respective leading ends. Supply / exhaust pipe 14, 1
3 is connected to the pipes 92a and 92b.

In addition, since the heating elements 1a and 1b have a serpentine shape as described above, the high-temperature and high-pressure gas-phase refrigerant is supplied from the lower side to the upper side during heating, unlike the heating element 1 having a parallel pipe. Although there is no advantage that the above-mentioned effect can be obtained by passing the gas-liquid two-phase refrigerant from the upper side to the lower side of the pipe during cooling, the refrigerant may be passed from either the upper or lower side of the pipe to the other side. The degree of freedom of piping is high.

In addition, in the process in which the refrigerant repeatedly moves up and down in the pipe, the downward movement due to the gravity of the gas-liquid two-phase refrigerant and the upward movement in a state where the gravity of the gas-phase refrigerant hardly acts are repeated alternately. The refrigerant is smoothly circulated, and the heat exchange as the evaporator is also smoothly performed.
The shape of the serpentine tube is not limited to that in which the flow direction of the refrigerant is the vertical direction, and a serpentine tube in which the flow direction of the refrigerant described below is horizontal can be adopted.

Please refer to FIG.
The radiant heat exchanger R1 can be replaced by a radiant heat exchanger R3 shown in FIG.
In the radiant heat exchanger R3, the heating element 1c whose pipe is a serpentine pipe in which the flow direction of the refrigerant is horizontal,
The structure is almost the same as that of the radiant heat exchanger R1 except that the structure is different from that of the heating element 1 in which the piping is a parallel type. 9 (a) and 9 (b), the same parts as those of the radiant heat exchanger R1 are denoted by the same reference numerals, and the description of the structure of those parts is omitted.

The heating element 1c is a serpentine tube that is formed of the same flat tube as the vertical tube 12 of the heating element 1 and has U-shaped folded portions (reference numerals omitted) at the left and right ends, respectively. The heating element 1c is supported by fixing each folded portion at the left and right ends to a support member 29 provided vertically inside each of the decorative frames 2 and 2a with a fixture (not shown). Both end portions of the serpentine pipe of the heating element 1 c are connected to the supply / discharge pipes 13 and 14. The supply and discharge pipes 14 and 13 are connected to
2a and 92b.
In addition, the pipe of the heating element 1c is formed with a tubular body 12a (see FIG. 6C) or strips having a plurality of strips 121 parallel to the longitudinal direction on the inner surface, similar to the heating elements 1a and 1b. It can also be formed with no tube.

Further, since the heating element 1c has a serpentine shape as described above, similarly to the heating element 1, a high-temperature and high-pressure gas-phase refrigerant passes from the lower side to the upper side during heating, and a gas-liquid two-phase refrigerant during cooling. By passing the pipe from the upper side to the lower side of the pipe, the advantage as described above is obtained as in the case of the heating element 1.

That is, during heating, the heating element 1 is heated by supplying high-temperature gas-phase refrigerant from the supply / exhaust pipe 14 to the heating element 1, and the floor surface 5 below the room where the temperature is lower and the temperature difference is larger than the upper part.
Since the nearby air is first heated, heat exchange efficiency is good and effective heating can be performed.
Further, the gas-phase refrigerant is guided to each vertical pipe 12 branched from the lower header 11 and moves upward while condensing and dissipating heat. In that case, since the refrigerant is in a gas phase, gravity hardly acts on the refrigerant, and the refrigerant can move smoothly upward.
Further, during cooling, the temperature near the ceiling above the upper part is usually high, and the heat energy for re-vaporization is large. Therefore, the heat efficiency is improved by introducing the refrigerant from the supply / discharge pipe 13 above the heating element 1c. . Also, in the process where the gas-liquid two-phase refrigerant moves down the pipe due to the action of gravity while absorbing heat by being guided to the pipe, it efficiently exchanges heat and changes to a gas phase refrigerant. Guided to machine 90.

Please refer to FIG. 10 and FIG.
In FIGS. 10A and 10B, the same or equivalent parts as those of the radiant heat exchanger R1 are denoted by the same reference numerals, and redundant description of the structure is omitted.
The radiant heat exchanger R1 can be replaced with a radiant heat exchanger R4 shown in FIG.
The radiant heat exchanger R4 has the same structure as the radiant heat exchanger R1 except that the structure of the heat generating element 1d is different from that of the heat generating element 1. In addition, although the heating element 1d has a parallel pipe,
However, the present invention is not limited to this, and the pipe may be a snake-like pipe that is of a series type and in which the flow direction of the refrigerant is vertical or horizontal.

A tube 12a which is a vertical tube used for the heating element 1d (the same as the tube of FIG. 6C)
Is covered with an outer shell 18 made of aluminum having excellent thermal conductivity for increasing heat exchange efficiency. The outer shell 18 includes shell members 181 and 182 having the same shape. As shown in FIG. 11B, the shell members 181 and 182 are formed so that the outer shape of the cross section is a slightly flat and substantially elliptical shape by being fitted together by a fitting portion (reference numeral omitted). Shell member 181,
Each fitting portion of 182 has a concave surface portion (reference numeral omitted) that fits in close contact with the outer shape (outer surface) of the tubular body 12a. In each of the shell members 181 and 182, voids 183 and 184 are formed in the longitudinal direction and independently of each other. The gap 183,
Although 184 is sealed in the present embodiment, it may communicate with the outside air.

The outer surfaces (outer surfaces when fitted) of the shell members 181 and 182 are knurled with a large number of irregularities 185 so as to increase the surface area and increase the heat exchange efficiency. As shown in FIG. 11B, in a state where the shell members 181 and 182 are fitted so as to hold the tube body 12a at each concave surface portion, the outer shell body 18 and the tube body 12a move relatively. There is no.
As shown in FIG. 11 (a), the outer shells 18 enclosing the tube body 12a have outer surfaces so that the adjacent outer shells 18 are not easily affected by radiant heat. They are arranged in a square shape (or zigzag shape) so as not to oppose each other, and also in this respect, the heat exchange efficiency can be increased.

Please refer to FIG. In addition, in the notation in FIG. 12, EX7 indicates “when heating”, and EX8 indicates “
EX9 indicates “expansion during heating” and EX10 indicates “shrinkage during cooling”.
The radiant heat exchanger R1 can be replaced by a radiant heat exchanger R5 shown in FIG. The radiant heat exchanger R <b> 5 includes a lower ventilation guide member 17 that guides flowing air at the lower part of the heating element 1, and an upper ventilation guide member 18 at the upper part of the heating element 1. The lower ventilation guide member 17 is composed of two curved plates (reference numerals omitted) having the same width as the length of the lower header tube 11 of the heating element 1 and having a required length in the vertical direction. Each curved plate is a drain pan 15. Are fixed to the decorative frames 2 and 2a so as to face the front side and the back side.

Further, the upper ventilation guide member 18 is composed of two curved plates (reference numerals omitted) having a required length in the vertical direction and approximately the same width as the length of the upper header tube 10 of the heating element 1. The upper header pipe 10 is fixed to the decorative frames 2 and 2a so as to face the front side and the back side. In addition, although the raw material of the lower ventilation guide member 17 and the upper ventilation guide member 18 is various metals or a synthetic resin, it is not limited to these.

The radiant heat exchanger R5 includes the lower ventilation guide member 17 and the upper ventilation guide member 18, so that air flows smoothly in the gaps 39 and 49, and in this embodiment, each has a two-sheet structure. The flow of air by the chimney effect using the current plates 3, 3a and the current plates 4, 4a can be performed more efficiently.
The lower ventilation guide member 17 and the upper ventilation guide member 18 may be provided with a coating having a deodorizing function, an antibacterial function, an adsorption / decomposition function of a volatile organic compound, or the like on the surface to purify indoor air. it can.

Please refer to FIG.
The radiant heat exchangers R1, R2, R3, R4, and R5 can display advertisements on the surfaces of the rectifying plates 3 and 3a on the front side as shown in FIGS. 13 (a) and 13 (b).
In FIG. 13 (a), “echoin” extends vertically from the rectifying plate 3a to the upper rectifying plate 3.
The advertising character 7a expressing the logo is printed. In FIG. 13 (b), advertising characters 7 b expressing an “ecoin” logo in the width direction are printed on the surface of the lower portion of the upper current plate 3.
In addition, advertising characters can be printed on the back side rectifying plates 4 and 4a in the same manner. What is expressed on each rectifying plate is not limited to advertisements, signs (signs and signboard displays), and various designs, but various artistic expressions such as pictures and photographs can also be employed.

Thereby, in addition to the functionality which produces the chimney effect which promotes the convection of air, the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b having a function as a cover of the heating element 1 are used as advertisement panels and signs. Can be used. That is, the radiant heat exchangers R1, R2, R3, R4,
R5 is also a form that is largely exposed to the indoor space in which it is installed, and has a presence. Therefore, by using this exposed form, it is possible to provide a more effective advertising function.

Refer to FIG.
Hereinafter, FIG. 17 shows variations of the configuration of the piping and valves as the operation mode switching means. In FIGS. 14 to 17, reference numerals are assigned in the same manner as in FIG. 1, and for convenience, numbers are left in the reference numerals of the valves. However, the numbers include meanings such as order, rank, or importance. Absent.
The air conditioner A3 shown in FIG. 14 has five valves to be used except for the valve V2 from the structure of the air conditioner A1, and the structure of the other parts is the same.

In the air conditioner A3, when operating the indoor unit 91 and the radiant heat exchanger R1 together with the outdoor unit 90, the valves V5 and V6 are closed, and the valves V1, V3, and V4 are opened. To. Also, the operation of the indoor unit 91 is stopped, and the radiant heat exchanger R1
When only the operation is performed, the valve V1 and the valve V6 are closed, and the valve V3, the valve V4, and the valve V5 are opened. Furthermore, the operation of the radiant heat exchanger R1 is stopped, and the indoor unit 91
When operating only the valve V3, the valve V4 and the valve V5 are closed, and the valve V1 and the valve V6 are opened.

Refer to FIG.
The air conditioner A4 shown in FIG. 15 has four valves to be used except for the valve V2 and the valve V4 from the structure of the air conditioner A1, and the structure of other parts is the same. In the present embodiment, the configuration of the air conditioner A1 other than the valves V2 and V3, the configuration of excluding the valves V1 and V3, or the configuration of excluding the valves V1 and V4 is also substantial. The following operation can be performed.

In the air conditioner A4, when operating the indoor unit 91 and the radiant heat exchanger R1 together with the outdoor unit 90, the valves V5 and V6 are closed and the valves V1 and V3 are opened. Further, when the operation of the indoor unit 91 is stopped and only the radiant heat exchanger R1 is operated, the valves V1 and V6 are closed and the valves V3 and V5 are opened. Further, when the operation of the radiant heat exchanger R1 is stopped and only the indoor unit 91 is operated, the valves V3 and V5 are closed and the valves V1 and V6 are opened.

Refer to FIG.
The air conditioner A5 shown in FIG. 16 is obtained by removing the pipe 92c and the valves V1, V2, V3, V4, and V5 from the configuration of the air conditioner A1, and using a single valve V6. The configuration of this part is the same.

In the air conditioner A5, when operating the indoor unit 91 and the radiant heat exchanger R1 together with the outdoor unit 90, the valve V6 is closed.
When the operation of the radiant heat exchanger R1 is stopped and only the indoor unit 91 is operated, the valve V
6 is opened. Thus, the refrigerant passing through the pipe 92 is longer than the path between the connection part of the pipe 92a branched from the pipe 92 and the connection part of the pipe 92b, and the pipe 1 of the heating element 1.
2 and the pipe 92b do not pass, and pass through a path between the connection part of the pipe 92a and the connection part of the pipe 92b on the short path side. Furthermore, when the operation of the indoor unit 91 is stopped and only the radiation heat exchanger R1 is operated, the fan 970 on the indoor unit 91 side of the air conditioner 9 is stopped with the valve V6 closed. Thereby, the indoor unit 91 cannot be air-conditioned only by the refrigerant passing through the piping of the indoor heat exchanger 97, and only the radiant heat exchanger R1 is operated.

Refer to FIG.
The air conditioner A6 shown in FIG. 17 is obtained by removing the pipe 92c and the valves V1, V2, and V5 from the configuration of the air conditioner A1, and using three valves, a valve V6, a valve V3, and a valve V4. Yes, the configuration of the other parts is the same. In this embodiment,
Further, even when the valve V3 or the valve V4 is omitted, the operation substantially similar to the following can be performed.

In the air conditioner A6, when operating the indoor unit 91 and the radiant heat exchanger R1 together with the outdoor unit 90, the valve V6 is closed and the valves V3 and V4 are opened. When the operation of the radiant heat exchanger R1 is stopped and only the indoor unit 91 is operated, the valve V
6 is opened and the valves V3 and V4 are closed. Further, when the operation of the indoor unit 91 is stopped and only the radiant heat exchanger R1 is operated, the fan on the indoor unit 91 side of the air conditioner 9 with the valve V6 closed and the valves V3 and V4 opened. 970 is stopped. Thereby, the indoor unit 91 cannot be air-conditioned only by the refrigerant passing through the piping of the indoor heat exchanger 97, and only the radiant heat exchanger R1 is operated.

By the way, generally used packaged air conditioners are roughly classified into room air conditioners and building multi air conditioners. Room air conditioners are mainly used for homes, and building multi air conditioners are widely used in commercial facilities. The radiation heat exchangers R1, R2, R3, R4,
R5 is assumed to be used in combination with these, and in the following experiments, what is the capacity of the radiant heat exchanger in combination with an air conditioner equipped with an inverter and in combination with an air conditioner not equipped with an inverter. Comparison was made in the case of heating.

The experiment was conducted in the following four cases for the change (change) in temperature and the change (change) in power consumption.
<CASE1> ⇒ Convection type air conditioning by operating only room air conditioner with inverter.
<CASE2> ⇒ Hybrid air-conditioning with simultaneous operation of room air conditioner with inverter and radiant heat exchanger.
<CASE3> ⇒ Convection air-conditioning only by building multi air conditioner without inverter.
<CASE4> ⇒ Hybrid air conditioning by simultaneous operation of a building multi air conditioner without an inverter and a radiant heat exchanger.

(Temperature change comparison test)
○ Comparison with room air conditioner (with inverter) Refer to Fig.18. FIG. 18 is a graph showing changes in room temperature when only the CASE 1 air conditioner is operated and when the CASE 2 air conditioner and the radiant heat exchanger are simultaneously operated. In the figure, (d) at the end of CASE indicates that the temperature measurement point is in the center of the laboratory, and (e) indicates that the temperature measurement point is in front of the radiant heat exchanger.

The experimental conditions are as follows.
Item CASE1 CASE2
Set temperature ℃ 27 24
Air volume Minimum Minimum Wind direction Horizontal Horizontal Test time min 90 90
Outside temperature (average) ℃ 9.71 10.2
Ambient humidity (average)% 18.1 22.7

(Discussion)
As shown in FIG. 18, until 30 minutes have passed, except for the first 5 minutes, CA
SE2 temperature is high. In other words, it can be seen that the rise of room temperature is faster in CASE2 equipped with a radiant heat exchanger. In CASE1, it took about 50 minutes for both (d) and (e) to reach the set temperature (27 ° C). In CASE2, about 15 minutes were required for the room temperature to reach the set temperature (24 ° C). It only took a minute. In CASE1, it takes 25 minutes or more to reach the set temperature of CASE2 (24 ° C).

Immediately after the start of the experiment, the room rapidly heated in CASE2, and it reached a steady state where PMV was 0 in about 30 minutes. On the other hand, in CASE1, the room warms up slowly and the steady state where PMV is 0 is about 5
It took 0 minutes. From these results, it was found that the hybrid CASE2 is more efficient and more comfortable than the convection CASE1 with an air conditioner alone, even if the difference in set temperature is taken into account.

○ Comparison with building multi air conditioner (without inverter) See FIG. Figure 19 shows the case where only the building multi air conditioner of <CASE3> is operated, and <CA
It is the graph which showed the change of the room temperature at the time of operating simultaneously the building multi air conditioner of SE4> and a radiation type heat exchanger. In the figure, (d) at the end of CASE indicates that the temperature measurement point is in the center of the laboratory, and (g) indicates that the temperature measurement point is in front of the radiant heat exchanger.

The experimental conditions are as follows.
Item CASE3 CASE4
Set temperature ℃ 27 27
Air volume Minimum Minimum Wind direction Horizontal Horizontal Test time min 90 90
Outside temperature (average) ℃ 10.5 11.8
Ambient humidity (average)% 75.2 69.9

(Discussion)
At the measurement point (g) located in front of the radiant heat exchanger, the temperature of CASE 3 where only the building multi air conditioner is operating and the temperature of CASE 4 where the building multi air conditioner and radiant heat exchanger are operating together are There was not much difference in transition. Also, the measurement point (d
In CASE3 and CASE4, there was almost no difference. Furthermore, regarding the rate of temperature rise, a significant difference as in the case of a room air conditioner could not be confirmed.

Such a difference in results from the room air conditioner is thought to be due to the presence or absence of an inverter. In hybrid air conditioning of building multi air conditioners and radiant heat exchangers, the operation of radiant heat exchangers is stopped as the compressor stops. Therefore, it is considered that remarkable data such as room air conditioners could not be obtained due to insufficient release of radiant heat.

(Power consumption comparison test)
○ Comparison with room air conditioner (with inverter) See Fig. 20. FIG. 20 is a graph showing changes in power consumption when only the air conditioner of the air conditioner is operated and when the air conditioner and the radiant heat exchanger are operated simultaneously. In the notation in FIG. 20, EX11 indicates “power consumption”.

The experimental conditions are as follows.
Item CASE1 CASE2
Set temperature ℃ 27 24
Air volume Minimum Minimum Wind direction Horizontal Horizontal Test time min 90 90
Outside temperature (average) ℃ 9.71 10.2
Ambient humidity (average)% 18.1 22.7
Globe temperature (steady state) ℃ 24 23.5
Room temperature (steady state) ℃ 25.8 24.4
PMV (steady state) 0.087442 0.085886

(Discussion)
It was confirmed that CASE2, which operated the radiant heat exchanger at the same time as the air conditioner, consumed less energy than CASE1, which operated only the air conditioner, in both the initial and steady state. This analysis compares the power consumption when the initial state and the steady state are combined, and quantitatively shows the energy saving effect by installing a radiant heat exchanger. And in the total amount of power consumption for 90 minutes from the start of operation, CASE2 was reduced by about 34% compared to CASE1, as shown below.

CASE1 CASE2 Reduction effect%
Power consumption kWh / 90min 1.103 0.73 33.8

○ Comparison with building multi air conditioner (without inverter) Refer to FIG. FIG. 21 is a graph showing changes in power consumption when only the building multi air conditioner of the air conditioner is operated and when the building multi air conditioner and the radiant heat exchanger are simultaneously operated. In the notation in FIG. 21, EX11 indicates “power consumption”.

The experimental conditions are as follows.
Item CASE3 CASE4
Set temperature ℃ 27 27
Air volume Minimum Minimum Wind direction Horizontal Horizontal Test time min 90 90
Outside temperature (average) ℃ 10.49 11.8
Ambient humidity (average)% 75.2 69.9
Globe temperature (steady state) ℃ 23.3 23.8
Room temperature (steady state) ℃ 24.5 24.4
PMV (steady state) 0.015546 0.039101

(Discussion)
No reduction effect was seen in the total amount of power consumption for 90 minutes from the start of operation. This is probably because the building multi-air conditioner does not have an inverter function, so that the radiant heat from the radiant heat exchanger was not sufficiently generated.

CASE3 CASE4 Reduction effect%
Power consumption kWh / 90 min 1.566 1.686 -8

As described above, in the room air conditioner equipped with the inverter, the effect of the radiant heat exchanger was sufficiently confirmed. On the other hand, in building multi air conditioners without inverters, there is almost no difference in the presence or absence of radiant heat exchangers in both the temperature change comparison test and the power consumption comparison test.
The effect of the radiant heat exchanger could not be confirmed.
In other words, it was found that the radiant heat exchanger can fully perform its functions when combined with an air conditioner with an inverter that is less likely to be stopped and that can generate radiant heat continuously from the radiant heat exchanger. . Moreover, although the said experiment was performed by heating, the same result can be estimated also in the point which should use the air conditioner with an inverter in order to fully exhibit the function of a radiation type heat exchanger also in the case of air_conditioning | cooling.

The terms and expressions used in this specification are merely explanatory and are not limiting at all, and exclude terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to do. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

A1 air conditioner 9 air conditioner 90 outdoor unit 91 indoor unit 92 piping 92a, 92b, 92c piping 93 outdoor heat exchanger 930 fan 94 compressor 95 four-way switching valve 96 expansion valve 97 indoor side heat exchanger 970 fan 98 piping 99 control Part V1, V2, V3, V4, V5, V6 Valve R1 Radiation heat exchanger 1 Heating element 10 Upper header pipe 11 Lower header pipe 12 Vertical pipe 120 Flow path 13 Supply / exhaust pipe 14 Supply / exhaust pipe 15 Drain pan 16 Drain pipe 160 Drain pipe 12a Piping 121 Strip 2, 2a Cosmetic frame 20, 21 Lower fixing member 22, 23 Upper fixing member 24, 25 Mounting tool 26 Reinforcing member 27 Upper opening 28 Lower opening 3, 3a, 3b Current plate 30 Radiation heat passage hole 31 Reflecting surface 39 Air gap 4, 4a, 4b Rectifier plate 40 Radiation heat passage hole 41 Reflective surface 49 Air gap 5 Floor surface 50 Lower clearance 6 Ceiling surface 60 Upper clearance 7a, 7b Advertising character 8 Wall surface R2 Radiation heat exchanger 1a, 1b Heating element 19 Suspension beam member 190 Lifting tool R3 Radiation heat exchanger 1c Heating element 29 support member R4 radiation type heat exchanger 1d heating element 18 outer shell body 181, 182 shell member 183, 184 gap 185 strip R5 radiation type heat exchanger 17 lower ventilation guide member 18 upper ventilation guide member A2 air conditioner 9a multi Air conditioner 90a Outdoor unit 91a, 91b Indoor unit A3 Air conditioner A4 Air conditioner A5 Air conditioner A6 Air conditioner

Claims (2)

A compressor, an expansion valve, a flow path switching valve, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and a refrigerant circuit that circulates the refrigerant to perform a refrigeration cycle includes the refrigerant in the indoor heat exchanger. An air conditioner for supplying heat-exchanged air into the room by a fan;
A pair of shell members of the same shape that are incorporated in the refrigerant circuit of the air conditioner are formed so that the outer shape of the cross-section becomes a substantially flat elliptical shape by fitting in a fitting portion, A gap formed in the longitudinal direction of the shell member and independently of each other, and a concave surface portion fitted to the fitting portion so as to be in close contact with an outer surface of a tubular body that is a vertical pipe through which a refrigerant flows; A protruding piece formed in the fitting portion and fitted in a recess formed in the other shell member; and a protruding piece portion formed in the other shell member formed in the fitting portion. A plurality of heating elements having an outer shell for a radiant heat exchanger including a recessed portion to be fitted and fitted are provided, and the heating elements are formed in a polygonal line in which the end portions of the adjacent heating elements are not continuous. An air conditioner comprising a radiant heat exchanger arranged. On the surface of the outer shell, one or more selected from knurling, alumite processing, heat radiation coating, far-infrared emission coating and deodorizing function, antibacterial function or adsorption / decomposition function of volatile organic compounds The air conditioning apparatus according to claim 1, wherein processing or coating is performed.

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