JP7337403B2 - Underfloor air conditioning system - Google Patents

Description

The present invention relates to an underfloor air-conditioning system for adjusting the temperature of living rooms in a building.

Conventionally, instead of an air conditioner that blows warm air into a living room, there has been proposed an underfloor air conditioning system that evenly warms the entire living room by warming the air under the floor so that the warm air naturally rises from the floor surface.

Conventionally, as an underfloor air-conditioning system, for example, in a house in which a solid foundation or a continuous foundation is provided under the underfloor space, and in the case of the continuous foundation, concrete is provided to lay the ground between the continuous foundations. Charcoal laid on the slab of the raft foundation or on the concrete provided between the continuous foundations, the first ventilation pipe communicating between the underfloor space and each room on the top floor, and the inside of the first ventilation pipe There is an air conditioning system using underfloor humidity control in a wooden house (Patent Document 1), which is characterized by being equipped with a blower for blowing air.

This air conditioning system can be electronically controlled so that the air blower can blow the air in the first ventilation pipe in both directions, blowing the air in the underfloor space to the second floor, and the air in the attic space. It functions to blow air into the underfloor space.

As a result, this air-conditioning system uses charcoal to condition the humid cold air that accumulates under the floor in the summer into dry cool air, and by blowing the dry cool air only to the top floor, the entire house is kept at a comfortable room temperature. In addition to improving livability, in winter, the warm air between the roof shingles and the insulation provided between the living room space on the top floor is sent only to the underfloor to warm the underfloor, keeping the entire house at a comfortable temperature. It is possible to improve the livability while maintaining the

JP-A-2004-162932

The air-conditioning system described in Patent Literature 1 is installed on each floor in the above-floor space, although the installation location is not particularly limited, and the air blowing direction is electronically controlled. It is considered that this is because the installation of the blower at the center position of the first ventilation pipe facilitates the blowing of air in both directions in the first ventilation pipe.

However, it is a roundabout way to change the air flow direction according to the building and surrounding temperature conditions, and it is difficult to optimally adjust the temperature inside the building in combination with an air conditioning system such as an air conditioner. .

(1) An underfloor air-conditioning system according to the present invention sucks the air in the above-floor space, heats it, and then discharges it into the underfloor space in a building having an underfloor space and an above-floor space partitioned by a floor material. An air conditioner, a blower provided in the underfloor space for sending only the air in the underfloor space, and a ventilation passage provided attached to the blower for communicating the above floor space and the underfloor space.

According to this underfloor air conditioning system, since the blower is provided in the underfloor space and is configured to send only the air in the underfloor space, there is no need to operate the blower for temperature adjustment. In addition, the air heated by the air conditioner is discharged to the underfloor space, and the air heated by the blower is directly blown to the above floor space through the ventilation passage, thereby enhancing the heat transport effect. .

(2) The above-described underfloor air conditioning system further includes an exhaust port for discharging air from the above floor space and a connection path connecting the underfloor space to the outside. Outside air may be sucked from the air outlet, and the air may be discharged to the outside from the exhaust port, so that the air blower operates 24 hours a day.

By doing so, a flow of air is formed in which outside air is sucked from the connection path provided in the underfloor space, passes through the inside of the building, and is discharged to the outside from the exhaust port. Here, 24-hour ventilation in the building is realized by operating the air blower for 24 hours.

(3) In the underfloor air conditioning system described above, the building includes a first floor portion and a second floor portion in the above floor space, and the blower sends air in the underfloor space to the second floor portion. good too. By doing so, the heated air in the underfloor space is directly blown into the above-floor space through the ventilation passage, and the heat transport effect to the second floor can be enhanced.

(4) The underfloor air conditioning system may further include an air circulation fan provided on the second floor, and the air circulation fan may send air from the second floor toward the first floor. By doing so, the air in the underfloor space is sent to the second floor by the sending device, the air sent to the second floor is sent to the first floor by the air circulation fan, and the air is circulated in the building. As a result, heat transport is efficiently performed by air circulation in the building.

(5) In the underfloor air-conditioning system described above, the outlet may be provided on the second floor surface of each living room on the second floor. By doing so, the air in the underfloor space is sent directly to each living room, so that the temperature of each living room can be easily adjusted.

(6) In the underfloor air-conditioning system described above, the underfloor space may have a connection path connected to the outside in the vicinity of the air conditioner. By doing so, the air from the air conditioner and the air from the connecting path can be mixed and sent to the underfloor space. As a result, it is possible to prevent cold air introduced from the outside from being sent into the living room as it is.

(7) In the underfloor air-conditioning system described above, the temperature sensor of the air conditioner may be arranged to detect the temperature of the above-floor space. Normally, the air conditioner itself is provided with a temperature sensor, which can prevent the air conditioner from detecting the temperature of the underfloor space and operating the air conditioner regardless of the temperature of the overfloor space.

ADVANTAGE OF THE INVENTION According to this invention, the underfloor air-conditioning system which can raise the heat-transport effect in a building is provided, eliminating complicated operation.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the underfloor air conditioning system which concerns on this invention, and is a longitudinal cross-sectional view of the building to which the underfloor air conditioning system was applied.

An underfloor air conditioning system S according to an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the underfloor air-conditioning system S will be described assuming that the air conditioner performs a heating operation.

As shown in FIG. 1, an underfloor air-conditioning system S of this embodiment is applied to a building 100 having an underfloor space D and an overfloor space U partitioned by a floor material 1 . In this embodiment, the building 100 is a two-story building 100 comprising a ground floor portion and a two-story portion.

As shown in FIG. 1 , the underfloor air conditioning system S includes an overfloor space U, an underfloor space D, a first air conditioner 10 , a second air conditioner 20 , a blower 30 , a ventilation passage 40 and an air circulation fan 50 . The floor space U and the underfloor space D are partitioned by the floor material 1 . The floor material 1 has a plurality of openings 1a that allow the space U above the floor and the space D under the floor to communicate with each other.

The first air conditioner 10 sucks air from the floor space U (see arrow a in FIG. 1), heats it, and discharges it to the underfloor space D (see arrow b in FIG. 1). Specifically, the floor space U and the underfloor space D are partitioned by the floor material 1, and the main body of the first air conditioner 10 is located between the above floor space U and the underfloor space D. It is arranged so that it has a suction port (not shown) in the space U above the floor and a discharge port (not shown) in the space D under the floor when installed. As a result, the first air conditioner 10 sucks the air in the space above the floor U through the air inlet (see arrow a in FIG. 1), and discharges the heated air into the space under the floor D through the outlet (see arrow a in FIG. 1). see arrow b).

The second air conditioner 20 is installed near the ceiling of the second floor, draws in air near the ceiling of the space above the floor U through the suction port (see arrow c in FIG. 1), and exits the space above the floor through the discharge port. Two shares of conditioned air are discharged (see arrow d in FIG. 1). Specifically, the second air conditioner has an intake port (not shown) for sucking air near the ceiling, and an exhaust port (not shown) for discharging the heated air downward into the space. In this embodiment, the second heater is provided near the ceiling of the climbing portion of the stairs 6 and installed so as to discharge air toward the stairs 6 .

The blower 30 is provided in the underfloor space D, sucks the air in the underfloor space D (see arrow e in FIG. 1), and blows the underfloor air to the above-floor space U via the ventilation passage 40 . Specifically, the blower 30 is provided in the underfloor space D at a distance from the air conditioner. The blower 30 is a conventionally well-known centrifugal blower such as a sirocco fan, but may be an axial flow blower, a diagonal flow blower, a cross flow blower, or the like. The blower 30 operates only in the direction of blowing the air in the underfloor space D. As shown in FIG. Note that the blower 30 operates continuously for 24 hours at a constant output unless a special operation is performed.

The ventilation path 40 is a ventilation pipe that allows the air in the underfloor space D sent by the blower 30 to pass therethrough. In this embodiment, the ventilation path 40 connects the underfloor space D and the second floor of the building 100 and sends the air in the underfloor space D to the second floor of the building 100 . Specifically, one end of the ventilation passage 40 is connected so that air is sent from the blower 30, the other end is passed through the inside of the building 100, and the other end is connected to the second floor of the second floor portion. is provided as an outlet. As a result, the air that has passed through the ventilation path 40 is ejected from the floor of the second floor (see arrow f in FIG. 1).

Also, the outlet of the ventilation path is provided on the second floor and on the floor surface of the room partitioned by the wall 7, so that the air in the underfloor space D can be sent to each living room. The ventilation path 40 is provided with an opening/closing mechanism (not shown) for each living room, so that the blowing of air can be controlled for each living room. Since the blower 30 operates continuously for 24 hours at a constant output, closing the opening/closing mechanism in a living room that does not require air conditioning can enhance the air conditioning effect in a living room that requires air conditioning.

The air circulation fan 50 is installed on the ceiling of the second floor, which is an atrium, and sends the air of the second floor downward, that is, to the first floor (see arrow g in FIG. 1). Specifically, an air circulation fan 50 is provided on the ceiling of the second floor part of the atrium where the first floor part and the second floor part form an atrium. As a result, the air blown out from the outlet of the ventilation passage 40 formed on the floor surface of the second floor passes through the space of the second floor and is sent to the first floor by the air circulation fan 50 .

In the underfloor air conditioning system S according to the present embodiment, the main body of the first air conditioner 10 is fixed to a wooden installation plate attached to the inner side of the outer wall. The main body and the installation plate of the first air conditioner 10 are in close contact with each other so that no gap is formed between the main body and the installation plate (not shown).

Also, the first air conditioner 10 is housed in a wooden housing that surrounds the main body from the side to the top. In addition, the front surface of the housing housing the first air conditioner 10 is a sliding door (not shown). It is possible to cover and hide the first air conditioner 10 without hindering the intake of air by the first air conditioner 10 .

Further, the first air conditioner 10 has a temperature sensor which is used for air conditioning control and which is arranged outside the housing of the main body of the first air conditioner 10 and above the floor space. The temperature sensor is composed of a thermistor. The temperature sensor of the first air conditioner 10 is attached to the inner side surface of a wooden container that encloses the main body of the air conditioner from its side surface to its upper surface. That is, the temperature sensor is arranged to sense the temperature of the above-floor space.

The blocking plate has a flat plate member and a grasping portion. The flat plate material of the blocking plate is formed in a U-shape as a whole, and has a shape and dimensions that fill the opening 1a (gap) of the flooring 1 that remains in the state where the main body of the first air conditioner 10 is installed. is set. Further, the flat plate member is formed so that the end portion thereof is in close contact with the installation plate. That is, the flat plate material is configured to completely block the gap. In addition, the flat plate is formed so that there is no level difference between the upper surface portion and the floor surface when it is fitted in the gap formed between the floor material 1 and the air conditioner.

The foundation 2 of the building 100 is composed of a reinforced concrete foundation slab that extends to face the ground and supports the building 100, and foundation 2 risers rising from the outer peripheral edge of the foundation slab. An underfloor space D, which is an area surrounded by the floor material 1 and the foundation 2, is not provided with a ventilation opening through which air naturally escapes to the outside. The heat insulating material of the underfloor air conditioning system S is made of foamed polystyrene, covering the outer front surface of the base slab and the inner and outer sides of the raised portion of the base 2 .

Each of the charcoal lumps 3 is formed by collecting finely crushed charcoal into one lump, and is placed at several locations under the floor at intervals while being lifted from the upper surface of the base slab. there is

The building 100 is provided with an air purifier 4 so that the underfloor space D is always supplied with fresh outside air 24 hours a day. Specifically, a filter-type air purifier 4 is provided outside, and draws outside air into the underfloor space D via a connection path 6 . The air purifying device 4 continuously takes in outside air for 24 hours. In addition, the air cleaner 4 has a dehumidification function.

The connection path 6 is provided through the raised portion of the foundation 2, and is sealed so that no gap is formed between the through-hole and the connection path 6. - 特許庁As a result, the structure is such that the air in the underfloor space D of the building 100 does not naturally escape to the outside. In the building 100, the ceiling of the second floor is mainly provided with a heat insulating material using cellulose, and the upper part of the outer wall of the first floor is covered with a heat insulating material using foamed plastic and cellulose.

The exhaust port 5 on the second floor of the building 100 communicates with the outside of the building 100 . Specifically, the exhaust port 5 is provided in a portion of the outer wall of the second floor near the ceiling and communicates with the outside of the building 100 . The exhaust port 5 is provided with an opening/closing mechanism (not shown), but is always open except when there is no particular intention.

Next, the air flow by the underfloor air conditioning system S according to this embodiment will be described.

In the underfloor air conditioning system S according to the present embodiment, air in the first floor space U is sucked by the first air conditioner 10 (see arrow a in FIG. 1), and is discharged to the underfloor space D after being heated. (See arrow b in FIG. 1). Part of the air discharged into the underfloor space D is discharged from the opening 1a of the floor material 1 to the above-floor space U on the first floor via the underfloor space D (see arrow h in FIG. 1).

Another part of the air discharged into the underfloor space D passes through the underfloor space D and flows through the blower 30 because the first air conditioner 10 and the blower 30 are arranged at a predetermined interval. (see arrow e in FIG. 1), is blown from the air blower 30 to the second floor via the ventilation path 40, and is discharged from the outlet of each living room (see arrow f in FIG. 1). Further, the air on the second floor is sent to the above-floor space U on the first floor by the air circulation fan 50 (see arrow g in FIG. 1).

Thus, forced air circulation occurs in the building 100 by the first air conditioner 10 , the blower 30 , the air passage 40 , and the air circulation fan 50 . Efficient heat transport effect is obtained in the building 100 by forced air circulation, and by adjusting the first air conditioner 10, the temperature that the residents of the building 100 feel is easily adjusted. can be adjusted to

Further, in the underfloor air conditioning system S according to the present embodiment, the blower 30 operates continuously for 24 hours, the air purifier 4 always takes in air for 24 hours, and the exhaust port 5 exhausts air for 24 hours. This will allow the inside of the building to be ventilated 24 hours a day. The amount of air taken in by the air purifier 4 and the amount of air exhausted by the exhaust port 5 are approximately equal, and the air amount equal to the volume of the building is taken in by the air purifier 4 and exhausted from the exhaust port 5 in two hours.

Furthermore, the second air conditioner is incorporated in the air circulation path described above, and by adjusting the second air conditioner, temperature regulation of the building 100 is further facilitated. An opening 1a is provided in the floor material 1, and the air in the underfloor space D is sent to the first floor portion of the above-floor space U. As shown in FIG.

On the stairs 6 going up from the first floor to the second floor, the air moves upward or downward depending on the conditions inside the building 100 (see double arrow i in FIG. 1). Specifically, when the air on the second floor is warmer than the air on the first floor, the air descends the stairs 6 downward. On the other hand, if the air on the second floor is colder than the air on the first floor, the air goes up the stairs 6 .

In the underfloor air-conditioning system S, air is sent from the underfloor space D, which has a high heat capacity due to the concrete and charcoal blocks of the foundation 2, to the above-floor space U. Therefore, since air is sent by the blower 30 via the underfloor space D having a heat storage function, the temperature of the entire building 100 can be easily kept constant.

In the present embodiment, the underfloor air-conditioning system S has been described for the case where the air conditioner performs the heating operation. However, the underfloor air conditioning system S can also be used when the air conditioner performs a cooling operation. In that case, it is assumed that the second air conditioner performs a cooling operation.

In this embodiment, the underfloor air-conditioning system S has been described using the two-story building 100 as an example. However, the underfloor air-conditioning system may be applied to a one-story building or a three-story or more building. In such a case, the blower 30 may be provided in the underfloor space as in the present embodiment, the ventilation passage 40 may be extended to each floor, and an outlet for the ventilation passage 40 may be provided on each floor.

In this embodiment, the underfloor air-conditioning system S explained the example in which heating is performed by two air conditioners. However, the underfloor air conditioning system S may be one in which heating is performed only by the first air conditioner. Also, other air conditioners may be added and used.

In the present embodiment, the air circulation fan 50 has been described as an example in which the large blade fan sends the air from the second floor to the first floor in the atrium structure. However, the air circulation fan may be configured such that an axial flow fan or the like, such as the blower device 30, is embedded in the floor material of the second floor to send air from the second floor to the first floor.

The underfloor air conditioning system S according to the present embodiment has been described above. However, the underfloor air-conditioning system is not limited to the above-described embodiment, and other configurations can be adopted within the scope of achieving the object of the invention.

In this embodiment, the underfloor air-conditioning system S can be used for building air-conditioning.

S underfloor air-conditioning system 1 floor material 2 foundation 3 charcoal block 4 air cleaner 5 exhaust port 6 connection path 10 first air conditioner 20 second air conditioner 30 blower 40 ventilation path 50 circulation fan

Claims (7)

In a building comprising an underfloor space and an above-floor space separated by flooring materials,
an air conditioner that sucks air from the above-floor space, heats the air, and discharges it to the underfloor space;
an air blower provided in the underfloor space and operating only in a direction to send air in the underfloor space;
a ventilation passage attached to the blower and communicating between the above-floor space and the under-floor space;
an exhaust port for exhausting the air in the above-floor space;
A connection path connecting the underfloor space to the outside,
An underfloor air conditioning system, wherein the blower operates at a constant output for 24 hours. By operating the air blower, external air is sucked from the connection path and the air is discharged to the outside from the exhaust port;
The underfloor air conditioning system according to claim 1, wherein the blower operates 24 hours a day. The building includes a first-floor portion and a second-floor portion in an above-floor space,
3. The underfloor air conditioning system according to claim 2 , wherein said blower sends air in said underfloor space to said second floor portion. 4. The underfloor air conditioning system according to claim 3, further comprising an air circulation fan provided in said second floor portion, said air circulation fan blowing air of said second floor portion toward said floor portion. 5. The underfloor air-conditioning system according to claim 3, wherein said exhaust port is provided on a second floor surface of each living room on said second floor. 6. The underfloor air-conditioning system according to claim 5, wherein said underfloor space has a connection path connected to the outside near said air conditioner. 7. The underfloor air conditioning system of claim 6, wherein the temperature sensor of the air conditioner is arranged to sense the temperature of the above floor space.

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