JP7433754B2 - air conditioning equipment - Google Patents

Description

The present invention relates to air conditioning equipment.

Patent Documents 1 and 2 disclose desks with air conditioners that include a desk, a screen erected on the back side of the desk, and a heat exchange type air conditioner built into the screen. If such a desk with an air conditioner is used, the area around the worker working at the desk can be individually air-conditioned by the heat exchange type air conditioner.

Patent Document 3 discloses task ambient air conditioning. A floor air conditioning system is used for ambient air conditioning, and the overall temperature in the room is adjusted to an appropriate temperature by blowing out temperature-controlled air from outlets in the floor. Convection generation panels are used for task air conditioning. Specifically, individual spaces are divided by providing partitions around the desk, and convection generating panels are attached to the partitions. The convection generating panel has a pair of opposed plates in an upright state and a heat exchanger provided between the opposed plates.
During cooling, a convection generating panel is attached to a partition above the desk top, and when a heat medium lower than room temperature is supplied to the heat exchanger of the convection generating panel, the heat exchanger and the opposing plate are cooled. Therefore, the cool radiation from the heat exchanger and the opposing plate can provide a cool feeling to the worker. Furthermore, the air is cooled by heat exchange between the air and the heat medium between the pair of opposing plates, and the air descends due to natural convection. Therefore, the cool air drifts over the desk top, giving the worker a cool feeling. Furthermore, the desk top is also cooled, and the secondary cooling radiation from the top can provide a cool feeling to the worker.
During heating, a convection generating panel is attached to a partition below the desk top, and when a heat medium higher than room temperature is supplied to the heat exchanger of the convection generating panel, the heat exchanger and the opposing plate are warmed. Therefore, by the warm air floating under the desk top plate, and by the heat radiation from the heat exchanger and the opposing plate, it is possible to give the worker a sense of warmth.

JP2016-205713A Japanese Patent Application Publication No. 2016-205719 Patent No. 5396248

By the way, when a person moves from a hot environment to a cooling environment using task ambient air conditioning, the person does not feel sufficiently cool until the crude heat is removed, and it takes a long time to feel cool. Also, you may feel hot until you get used to the cooling environment of Task Ambient Air Conditioning. In order to deal with this, people try to use a fan to feel cool, but it becomes a hindrance to their work. Furthermore, even if a dedicated crude heat removal device such as a cool shower is used to obtain a cool feeling before moving to an air-conditioned environment, the installation cost of the crude heat removal device increases.

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to immediately relieve the heat sensation of a person who has moved from a hot environment.

In order to solve the above-mentioned problems, an air conditioner is provided in a cavity between a front panel, a rear panel facing the front panel, and the front panel and the rear panel, and which heats the air at a temperature lower or higher than the ambient temperature. A heat exchanger that exchanges heat between the air in the cavity and the heat medium and generates radiant cold or heat and natural convection by being supplied with a medium, and a fan that blows the air in the cavity. and.

According to the above, when a heat medium having a temperature lower than the ambient temperature is supplied to the heat exchanger, the air conditioner can be used as a cooling device. In that case, radiant cold heat is generated from the heat exchanger, and those who are near the air conditioner can feel cool. Furthermore, since the air in the cavity between the front panel and the rear panel is cooled and naturally descends, those who are near the air conditioner can experience a cool feeling due to natural convection.
Moreover, since the air within the cavity is blown by the fan, airflow is blown out from the cavity. When people who have moved from a hot environment are exposed to the airflow, they are rapidly cooled down and feel cool. Therefore, the person's feeling of heat is immediately relieved.

On the other hand, if a heat medium having a higher temperature than the ambient temperature is supplied to the heat exchanger, the air conditioner can be used as a heating device. In that case, radiant heat is generated from the heat exchanger, so people near the air conditioner can feel a sense of warmth. Furthermore, the air in the cavity between the front panel and the rear panel is warmed and rises naturally, giving people near the air conditioner a sense of warmth.
In addition, if a person who feels hot in the heated environment is exposed to the airflow from the fan blowing out of the cavity, it can be expected that the heat will be alleviated.

Preferably, the fan is provided on the front panel, and the fan blows air forward in the cavity.

According to the above, when a person who has moved from a hot environment is in front of the front panel, the person's feeling of heat is immediately relieved because the person is exposed to the airflow from the fan.
On the other hand, if a person who feels hot in the heating environment is in front of the front panel, the heat will be alleviated by being exposed to the airflow from the fan.

Preferably, the fan is provided above the cavity, and the fan blows air downward into the cavity.

According to the above, when the air conditioner is used as a cooling device, the air cooled by the heat exchanger is forced down by the fan, so people near the air conditioner can feel cool due to forced convection. In particular, when a person who has moved from a hot environment is exposed to the airflow from the fan blowing downward into the cavity, the person's feeling of heat is immediately relieved.
On the other hand, if a person who feels hot in the heated environment is exposed to the airflow from the fan blowing down the cavity, the heat will be alleviated.

Preferably, the fan is provided on a side of the cavity, and the fan blows air laterally into the cavity.

According to the above, when a person who has moved from a hot environment is exposed to the airflow of the fan blown out from the cavity, the person's feeling of heat is immediately relieved.
On the other hand, if a person feels hot in the heated environment and is exposed to the airflow from the fan blowing out of the cavity, the heat will be alleviated.

Preferably, the fan is provided at a lower part of the cavity, and the fan blows air in the cavity downward.

According to the above, when the air conditioner is used as a cooling device, the air cooled by the heat exchanger is forced down by the fan, so people near the air conditioner can feel cool due to forced convection. In particular, when a person who has moved from a hot environment is exposed to the airflow from the fan blowing downward into the cavity, the person's feeling of heat is immediately relieved.
On the other hand, if a person who feels hot in the heated environment is exposed to the airflow from the fan blowing down the cavity, the heat will be alleviated.

Preferably, the front panel, the rear panel, the heat exchanger, and the fan are arranged above or below the desk top.

According to the above, when the front panel, rear panel, heat exchanger, and fan are arranged upwardly from the desk top, when a heat medium with a temperature lower than the ambient temperature is supplied to the heat exchanger, the temperature inside the cavity increases. The air cools and naturally descends. As the cool air wafts over the desk top, the person working at the desk feels cool.
If the front panel, rear panel, heat exchanger, and fan are placed at a distance below the desk top, the air in the cavity will be warmed when a heat medium higher than the ambient temperature is supplied to the heat exchanger. rise naturally. The warm air drifts under the desk top, giving the person working at the desk a sense of warmth.

According to the present invention, when a person who has moved from a hot environment is exposed to the airflow of the fan, the person's feeling of heat is immediately relieved.
On the other hand, when a person who feels hot in a heated environment is exposed to the airflow from a fan, that person's heat will be alleviated.

It is a sectional view of a certain floor of a building. FIG. 2 is a perspective view of fixtures and individual air conditioning equipment installed in an office room. FIG. 2 is a perspective view of an individual air conditioner. FIG. 2 is a perspective view of an individual air conditioner according to a second embodiment. It is a perspective view of the individual air conditioner of a modification of a 2nd embodiment. It is a perspective view of an individual air conditioner of a 3rd embodiment.

[First embodiment]
1. Indoor Task Ambient Air Conditioning Figure 1 is a cross-sectional view of a floor of a building. This floor is provided between the lower slab 11 and the upper slab 12. A floor panel 13 is laid above the lower slab 11, and a subfloor is installed between the lower slab 11 and the floor panel 13. A space 15 is formed. A ceiling panel 14 is installed below the upper slab 12, and an attic space 16 is formed between the upper slab 12 and the ceiling panel 14. The space between the floor panel 13 and the ceiling panel 14 is divided into an office room 17 and a machine room 19 by a wall panel 18 erected on the lower slab 11. The floor panel 13 is provided with an air outlet 13a that communicates the office room 17 with the underfloor space 15. The ceiling panel 14 is provided with a suction port 14a that communicates the office room 17 with the attic space 16.

In the office 17, task ambient air conditioning is performed. Ambient air conditioning refers to air conditioning that adjusts the overall temperature of the office 17, and task air conditioning refers to air conditioning that adjusts the temperature around the worker. Ambient air conditioning is performed by the air conditioner 20, and task air conditioning is performed by the individual air conditioning equipment 50 and the temperature control equipment 70.

2. Ambient Air Conditioning An air conditioner 20 that performs ambient air conditioning in the office room 17 is installed in the machine room 19. A duct 22 is provided from the air conditioner 20 to the attic space 16, and a duct 21 is provided from the air conditioner 20 to the underfloor space 15. The air conditioner 20 includes an indoor unit, a ventilation system, and the like. The air conditioner 20 sucks air from inside the office 17 through an inlet 14a, an attic space 16, and a duct 22, conditions it, and then sends the conditioned air into the office 17 through a duct 21, an underfloor space 15, and an air outlet 13a. Speech out. Thereby, the entire office room 17 is adjusted to an appropriate temperature and humidity.

Furthermore, the air conditioner 20 sucks indoor air from inside the office 17 through the suction port 14a, the attic space 16, and the duct 22, and discharges the indoor air outdoors. Furthermore, the air conditioner 20 sucks outside air from outside, exchanges heat between the outside air and indoor air, and then blows out the outside air into the office 17 through the duct 21, the underfloor space 15, and the outlet 13a. As a result, the inside of the office 17 and the outside are ventilated.

3. Task Air Conditioning FIG. 2 is a perspective view of the fixtures and individual air conditioning equipment 50 installed in the office room 17. As shown in FIGS. 1 and 2, a plurality of work desks 30 are installed in the office 17. A screen 41 is erected between the work desks 30 whose back sides are butted against each other, and a screen 42 is erected between the work desks 30 adjacent to each other on the left and right.

The work desk 30 includes a top plate 31 and legs 32. The legs 32 hang down from the top plate 31 and stand up on the floor panel 13, and the top plate 31 is supported by the legs 32. This top plate 31 is a rectangular plate made of wood, metal, glass, or the like. The width of the top plate 31 is determined to be approximately the same as the width of the screen 41 (length in the left-right direction), and the depth of the top plate 31 is determined to be approximately the same as the width of the screen 42 (length in the front-rear direction). The worker sits on a chair in front of the work desk 30 and works at the work desk 30, and the panel-type individual air conditioner 50 performs task air conditioning around the worker. The individual air conditioner 50 is a radiation type and convection type air conditioner.

The individual air conditioning equipment 50 is installed at a position above or below the top plate 31 on the back side above the top plate 31 of each work desk 30 . Specifically, the individual air conditioner 50 is removably attached to the screen 41, and when the individual air conditioner 50 is used as an air conditioner, the individual air conditioner 50 is placed above the top plate 31 as shown by the solid line. The individual air conditioning equipment 50 individually cools the top plate 31 of the work desk 30 and its surroundings. On the other hand, when the individual air conditioner 50 is used as a heater, the individual air conditioner 50 is installed below the top plate 31 and hung on the screen 41, as shown by the two-dot chain line, and the individual air conditioner 50 is placed on the work desk. The area under and around the top plate 31 of 30 is individually heated.
Note that the individual air conditioners 50 may be installed upwardly from the top plate 31 by being supported by legs that stand up on the top plate 31, or the individual air conditioners 50 may be mounted on the top plate 31 by hanging materials. It may also be installed by being suspended from.

With reference to FIG. 3, the individual air conditioner 50 will be described in detail. FIG. 3 is a perspective view of the individual air conditioner 50. In FIG. 3, in order to illustrate the inside of the individual air conditioner 50, a part of the front panel 51 of the individual air conditioner 50 is cut away.

The individual air conditioner 50 includes a front panel 51, a rear panel 52, side panels 53, 54, a heat exchanger 55, fans 56, 57, a flexible outgoing pipe 61, a flexible return pipe 62, and a coupler 63 (see FIG. 2). Be prepared.

The front panel 51, the rear panel 52, and the side panels 53, 54 are assembled into a thin rectangular tube shape that is open at the top and bottom. The front panel 51 and the rear panel 52 face each other in the front and back with an interval between them, and the side panels 53 and 54 face each other in the left and right directions with an interval between them. Note that a filter such as a punching plate or a wire mesh may be provided in the upper opening, the lower opening, or both of the cavities surrounded by the panels 51 to 54.

Air outlets are formed on the right and left sides of the front panel 51, and fans 56 and 57 are provided at the air outlets. The fans 56 and 57 are covered and protected by a perforated plate such as a punching plate or a wire mesh. Fans 56 and 57 are axial fans such as propeller fans, and blow air forward in a cavity surrounded by panels 51 to 54. Note that the fans 56 and 57 may be centrifugal fans, mixed flow fans, or cross flow fans.

A heat exchanger 55 is housed in the cavity surrounded by the panels 51-54. The heat exchanger 55 includes a heat medium pipe 55a and heat transfer fins 55b for heat radiation or heat absorption attached to the outer surface of the heat medium pipe 55a.

The heat medium pipe 55a is made of a heat transfer pipe material with high thermal conductivity, such as metal. For example, a metal pipe such as an iron pipe, a stainless steel pipe, a copper pipe, or an aluminum pipe can be used as the heat medium pipe 55a. The heat medium pipe 55a is arranged in a meandering manner so as to be folded back at the left and right parts of the cavity surrounded by the panels 51 to 54. Note that fans 56 and 57 are arranged in front of the folded portion of the heat medium pipe 55a.

The heat transfer fins 55b are made of a coil material made by spirally winding a wire with high thermal conductivity, and are further spirally wound around the heat medium pipe 55a while maintaining the spiral coil form. . The heat transfer fins 55b may be attached to the entire outer surface of the heat medium pipe 55a, or may be attached to the entire portion of the heat medium pipe 55a other than the left and right folded portions. The heat transfer fins 55b are surface area enlarging parts that increase the surface area that comes into contact with air and improve the efficiency of heat radiation or heat absorption.

One end of a flexible outgoing pipe 61 is connected to one end of the heat medium pipe 55a, and one end of a flexible return pipe 62 is connected to the other end of the heat medium pipe 55a. As shown in FIG. 2, a coupler 63 is attached to the other ends of the flexible outgoing pipe 61 and the flexible return pipe 62. When the coupler 63 is connected to the coupler provided on the floor panel 13, the flexible outgoing pipe 61 is connected to the outgoing pipe 71 under the floor, and the flexible return pipe 62 is connected to the return pipe 72 under the floor. As shown in FIG. 1, the outgoing pipe 71 and the return pipe 72 are connected to each other at one end and are piped in the underfloor space 15, and the other end is connected to the temperature control device 70 in the machine room 19. . The temperature control device 70 circulates the heat medium by adjusting the temperature of the heat medium such as water to a predetermined temperature, sending the temperature-controlled heat medium to the outgoing pipe 71, and receiving the heat medium from the return pipe 72. Here, when the individual air conditioner 50 is used as an air conditioner, the temperature control device 70 controls the temperature of the heat medium to be lower than the temperature in the office room 17, for example, 15°C. On the other hand, when the individual air conditioner 50 is used as a heater, the temperature control device 70 controls the temperature of the heat medium to be higher than the temperature in the office room 17, for example, 44 to 45°C.

4. Cooling During cooling, ambient cooling and task cooling are used together by operating the air conditioner 20 in a cooling operation and operating the temperature control device 70 at a low temperature. Further, during cooling, the individual air conditioner 50 is used by hanging it over the screen 41 above the top plate 31.

When the air conditioner 20 is operated for cooling, cold air is blown out from the outlet 13a. Thereby, the office room 17 is cooled to the set temperature.

When the temperature control device 70 is operated at a low temperature, the temperature of the heat medium is controlled by the temperature control device 70 to a temperature lower than the room temperature of the office room 17, and the heat medium is circulated between the temperature control device 70 and the heat exchanger 55. The heat exchanger 55 is cooled to a temperature lower than the surrounding room temperature by the heat medium supplied to the heat exchanger 55, and the front panel 51, rear panel 52, and side panels 53, 54 are also cooled to a lower temperature than the surrounding room temperature. Then, radiant cold heat is generated from the heat exchanger 55 and the panels 51 to 54, and the cold radiation from the heat exchanger 55 and the panels 51 to 54 can provide a cool feeling to the worker working at the work desk 30.

Further, the heat exchanger 55 exchanges heat between the heat medium inside the heat exchanger 55 and the air outside the heat exchanger 55, and the cold air descends by natural convection. The descending cold air spreads along the surface of the top plate 31 and floats on the top plate 31. Such cool air and its flow can provide a cool feeling to the worker working at the work desk 30. Here, since the heat exchanger 55 is surrounded by the panels 51 to 54, the natural downward flow of cool air is not affected by external disturbances.

The top plate 31 is also cooled by the cold radiation from the heat exchanger 55 and the panels 51 to 54 and the cold air on the top plate 31. Then, the secondary cooling radiation from the top plate 31 can provide a cool feeling to the worker working at the work desk 30.

By the way, even if a person who has moved into the office 17 from a hot environment is exposed to an environment of ambient cooling by the air conditioner 20 or task cooling by the individual air conditioner 50, until the person's crude heat is removed, That person will feel the heat. However, in this embodiment, by being exposed to the airflow generated by the fans 56 and 57, a cool feeling can be obtained. Further, the crude heat of the person is rapidly removed by the air currents generated by the fans 56 and 57. Therefore, the person's feeling of heat is immediately relieved.

Moreover, since the fans 56 and 57 blow air forward, the airflow hits the head, neck, or chest of the worker, making it easier for the worker to feel cool.

Furthermore, since the fans 56 and 57 are provided in front of the left and right folded portions of the heat medium pipe 55a, the airflow of the fans 56 and 57 hardly affects the natural downward flow of cold air, and there is almost no turbulence in the flow of cold air. Does not occur. However, the cold air cooled by the heat exchanger 55 may be blown toward the worker by the fans 56 and 57.

Note that the fans 56 and 57 may be energized and interrupted by a sensor or a switch (switch). Examples using sensors or switches are given below.

(1) A switch for turning on and off the fans 56 and 57 is provided on the work desk 30, the panels 51 to 54, or the screens 41 and 42. When the worker feels hot, the fans 56 and 57 are activated by turning on the switch. On the other hand, when the worker gets rid of the heat, the fans 56 and 57 are stopped by turning off the switch.

(2) A non-contact type or contact type human sensor is provided on the work desk 30, the screens 41, 42, or the panels 51 to 54, or around them. When a worker is detected by the human sensor, the control circuit operates the fans 56 and 57. After that, the control circuit stops the fans 56 and 57 when the control circuit measures a predetermined period of time from the time when the worker is detected. Note that the control circuit may stop the fans 56 and 57 when the human sensor no longer detects the worker.

(3) A personal computer installed on or around the work desk 30 is provided with a sensor that detects whether the personal computer is powered on or off. When the sensor detects that the personal computer is powered on, the control circuit operates the fans 56 and 57. After that, the control circuit stops the fans 56 and 57 when the control circuit measures a predetermined period of time from when the personal computer is detected to be powered on. Note that the control circuit may stop the fans 56 and 57 when the sensor detects that the personal computer is powered off.

(4) A load sensor is provided on the chair that pairs with the work desk 30, and the load detected by the load sensor is compared with a predetermined threshold value by the control circuit. When the worker sits on the chair, the load detected by the seating sensor exceeds a predetermined threshold, so the control circuit operates the fans 56 and 57. After that, the control circuit stops the fans 56, 57 after a predetermined period of time has elapsed since the fans 56, 57 were activated. Note that the control circuit may stop the fans 56 and 57 when the load detected by the load sensor becomes equal to or less than a predetermined threshold due to the worker standing up.

5. Heating During heating, ambient heating and task heating are used together by operating the air conditioner 20 for heating and operating the temperature control device 70 at a high temperature. Furthermore, during heating, the individual air conditioner 50 is used by hanging it over the screen 41 below the top plate 31.

When the air conditioner 20 is operated for heating, warm air is blown out from the air outlet 13a. Thereby, the office room 17 is heated to a predetermined set temperature.

When the temperature control device 70 is operated at a high temperature, the temperature of the heat medium is controlled to be higher than the room temperature of the office room 17 by the temperature control device 70, and the heat medium is circulated between the temperature control device 70 and the heat exchanger 55. The heat exchanger 55 is heated to a higher temperature than the surrounding room temperature by the heat medium supplied to the heat exchanger 55, and the front panel 51, rear panel 52, and side panels 53, 54 are also heated to a higher temperature than the surrounding room temperature. . Then, radiation and convection heat is generated from the heat exchanger 55 and the panels 51 to 54, and the thermal radiation from the heat exchanger 55 and the panels 51 to 54 can give a warm feeling to the worker working at the work desk 30. can.

Further, heat exchange between the heat medium and the air is performed by the heat exchanger 55, and warm air rises due to natural convection. The warm air that has risen spreads to the back surface of the top plate 31 and floats under the top plate 31. Such warm air and its flow can provide a warm feeling to the worker working at the work desk 30.

The top plate 31 is also heated by the heat radiation from the heat exchanger 55 and the panels 51 to 54 and the warm air below the top plate 31. Then, the secondary thermal radiation of the top plate 31 can provide a warm sensation to the worker working at the work desk 30.

Normally, the fans 56 and 57 are stopped, but when the worker feels the heat from the heating, the fans 56 and 57 are activated by turning on the switch. Then, the worker can feel cool by being exposed to the airflow generated by the fans 56 and 57.

[Second embodiment]
FIG. 4 is a perspective view of an individual air conditioner 50A according to the second embodiment. Each component of the individual air conditioner 50A of the second embodiment is given the same reference numeral as each component of the corresponding individual air conditioner 50. Further, below, differences between the individual air conditioner 50A of the second embodiment and the individual air conditioner 50 of the first embodiment will be mainly explained.

In the second embodiment, fans 56 and 57 such as an axial fan, a centrifugal fan, a mixed flow fan, or a cross-flow fan are provided at the upper opening of a cavity surrounded by panels 51 to 54, and A horizontally long slit 58 is formed in the center.

When the fans 56 and 57 operate during cooling, the fans 56 and 57 blow air downward. Then, the cold air cooled by the heat exchanger 55 flows downward due to the wind pressure of the fans 56 and 57 in addition to natural convection. The cold air that has flowed downward flows forward along the top plate 31 and is blown onto the worker. Therefore, it is possible to give a cool feeling to the worker.

Further, due to the wind pressure of the fans 56 and 57, a portion of the cold air cooled by the heat exchanger 55 passes through the slit 58 and flows forward. Therefore, since the cool air is blown onto the worker, it is possible to give the worker a cool feeling.

A shutter for opening and closing the slit 58 may be provided in the slit 58. When the operator manually or electrically closes the shutter, the cold air no longer blows out of the slit 58, but the flow rate of the downdraft of cold air increases. On the other hand, when the worker opens the shutter manually or electrically, the cold air from the slit 58 and the cold air from the downward airflow are blown onto the worker. Therefore, the manner in which cool air is blown can be changed by opening and closing the shutter.

Note that the slit 58 may not be formed.

If the worker feels hot during heating, the fans 56 and 57 are activated by turning on the switch. Then, since the fans 56 and 57 blow air downward, the air flows forward along the floor panel 13 and is blown onto the worker. Therefore, the worker feels cool. At this time, if the fans 56 and 57 are operated in opposite directions, the air flows forward along the top plate 31 of the workbench 30, so that the airflow can be applied more effectively.

In the example shown in FIG. 4, the fans 56, 57 are provided in the upper opening of the cavity surrounded by the panels 51 to 54, but conversely, as in the individual air conditioner 50B shown in FIG. may be provided in the lower opening of the cavity surrounded by the panels 51-54. In this case, no slit for blowing out cold air is formed. In this case, during cooling, the fans 56 and 57 suck in the cold air cooled by the heat exchanger 55 and blow it downward, so the cold air flowing downward flows forward along the top plate 31. Therefore, it gives a cool feeling to the worker. On the other hand, since the fans 56 and 57 blow air downward or upward during heating, those who feel hot due to the heating feel cooled by the airflow.

[Third embodiment]
FIG. 6 is a perspective view of an individual air conditioner 50C according to the third embodiment. Each component of the individual air conditioner 50C of the third embodiment is given the same reference numeral as each component of the corresponding individual air conditioner 50. Further, below, differences between the individual air conditioner 50C of the third embodiment and the individual air conditioner 50 of the first embodiment will be mainly explained.

In the third embodiment, suction ports are formed at the tops of side panels 53 and 54, respectively, and fans 56 and 57, such as axial fans, centrifugal fans, mixed flow fans, or cross-flow fans, are provided at each suction port. ing. Further, a horizontally long slit 58 is formed in the center of the front panel 51.

When the fans 56 and 57 operate during cooling, the fans 56 and 57 blow air toward the cavity surrounded by the panels 51 to 54. Then, the cold air cooled by the heat exchanger 55 is blown out from the upper and lower openings of the cavity by the wind pressure of the fans 56 and 57. Cold air blown out from the lower opening of the cavity flows forward along the top plate 31 and is blown onto the worker. Therefore, it is possible to give a cool feeling to the worker.

Further, due to the wind pressure of the fans 56 and 57, a portion of the cold air cooled by the heat exchanger 55 passes through the slit 58 and flows forward. Therefore, since the cool air is blown onto the worker, it is possible to give the worker a cool feeling. Note that a shutter may be provided in the slit 58 as in the second embodiment.

If the worker feels hot during heating, the fans 56 and 57 are activated by turning on the switch. Then, since the fans 56 and 57 blow air toward the cavity surrounded by the panels 51 to 54, the air in the cavity blows out from the upper opening and lower cavity of the cavity, and the air is transferred to the back side of the top plate 31 and the floor panel. It flows forward along line 13 and is sprayed onto the lower body of the worker. Therefore, the worker feels cool.

[Modified example]
In each of the embodiments described above, the installation positions of the fans 56 and 57 are determined on the front panel 51, the side panels 53 and 54, and the cavity depending on the design of the individual air conditioners 50, 50A, 50B, and 50C and the installation space of the fans 56 and 57. The upper opening or the lower opening of the cavity. The design of the individual air conditioners 50, 50A, 50B, 50C, the size of the fans 56, 57, the installation space of the fans 56, 57 may be changed, and the installation positions of the fans 56, 57 may be changed. Even if the design is changed, airflow from fans 56 and 57 can be blown directly or indirectly to the worker.

50, 50A, 50B...Radiation type air conditioner 51...Front panel 52...Rear panel 53, 54...Side panel 55...Heat exchanger 56, 57...Fan

Claims (5)

front panel and
a rear panel facing the front panel;
It is provided in a cavity between the front panel and the rear panel, and a heat medium having a temperature lower or higher than the ambient temperature is supplied, thereby exchanging heat between the air in the cavity and the heat medium and radiating radiation. A heat exchanger that generates cold heat or radiant heat and natural convection;
a fan that blows air outside the cavity into the cavity so that the air inside the cavity collides with the heat exchanger;
The fan is provided on the front panel, and the fan blows air inside the cavity forward or blows air outside the cavity into the cavity,
The heat exchanger has a heat medium pipe piped in a twisted shape so as to be folded back at a left part and a right part in the cavity,
The fan is an air conditioning device provided in front of the folded portion of the heat medium pipe on the front panel. front panel and
a rear panel facing the front panel;
It is provided in a cavity between the front panel and the rear panel, and a heat medium having a temperature lower or higher than the ambient temperature is supplied, thereby exchanging heat between the air in the cavity and the heat medium and radiating radiation. A heat exchanger that generates cold heat or radiant heat and natural convection;
a fan that blows air outside the cavity into the cavity so that the air inside the cavity collides with the heat exchanger;
The fan is provided on a side of the cavity, and the fan blows air laterally into the cavity or laterally outside the cavity,
The front panel is an air conditioner having a horizontally long slit at a position below the fan. The air conditioner according to claim 2 , wherein the slit is provided with a shutter that opens and closes the slit. The air conditioner according to any one of claims 1 to 3 , further comprising a sensor or a switch for switching between activation and stop of the fan. The air conditioner according to any one of claims 1 to 4 , wherein the front panel, the rear panel, the heat exchanger, and the fan are arranged above or below a desk top.

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