JP7037421B2 - Perimeter air conditioning system - Google Patents

Description

The present invention relates to a perimeter air conditioning system that air-conditions a perimeter zone.

In the perimeter zone on the window side of the building, a heating load is generated due to the influence of low temperature outside air in winter and the like, and a cooling load is generated due to the influence of sunlight and high temperature outside air in summer and the like. Therefore, in order to cover the heating load and the cooling load in the perimeter zone, a perimeter air conditioning system for heating and cooling the perimeter zone is provided.

In a building having a plurality of floors, if a perimeter air-conditioning system is individually provided on each of the plurality of floors, the number of perimeter air-conditioning systems will increase, resulting in complicated configuration and cost increase.

Although it is not a perimeter air-conditioning system, in an air-conditioning system that air-conditions the interior of a building, the space between the room on the upper floor and the room on the lower floor is equipped with an air conditioner capable of heating and cooling, and the air conditioner is used on the upper floor. There is one that heats the room and cools the room on the lower floor (see, for example, Patent Document 1).

In the system described in Patent Document 1, a warm air duct connecting the air conditioner and the room on the upper floor, a cold air duct connecting the air conditioner and the room on the lower floor, and air conditioning air from the air conditioner are supplied to the warm air duct. It is equipped with a damper that switches between the state of air conditioning and the state of supplying to the cold air duct. When heating the room on the upper floor, the air conditioner is operated for heating, and the damper is switched to a state where the conditioned air (warm air) from the air conditioner is supplied to the warm air duct. When cooling the room on the lower floor, the air conditioner is operated for cooling, and the damper is switched to a state where the conditioned air (cold air) from the air conditioner is supplied to the cold air duct.

Japanese Unexamined Patent Publication No. 5-71795

The system described in Patent Document 1 relates to an air-conditioning system that air-conditions the interior of a building, and supplies air-conditioned air from an air conditioner to the entire interior to cover the air-conditioning load of the entire interior. I have to. Therefore, the system described in Patent Document 1 does not describe the point of performing air conditioning to cover the heating load and the cooling load generated in the perimeter zone, and it is possible to efficiently improve the thermal environment in the perimeter zone. It may not be possible.

Further, in the system described in Patent Document 1, although it is described that the air-conditioned air conditioned by the air conditioner is supplied to the room on the upper floor or the room on the lower floor, where the air to be air-conditioned is sent to the air conditioner. It is not stated whether to supply (return air). Therefore, when heating the room on the upper floor, if only the conditioned air (warm air) from the air conditioner is supplied to the room on the upper floor, the air balance in the room on the upper floor may be disturbed. be. In addition, when cooling the room on the lower floor, if only the conditioned air (cold air) from the air conditioner is supplied to the room on the lower floor, the air balance in the room on the lower floor may be lost. be.

In view of this situation, the main subject of the present invention is to air-condition the perimeter zone in the room on the upper floor and the perimeter zone in the room on the lower floor while maintaining the air balance in the room on the upper floor and the room on the lower floor. The point is to provide a perimeter air conditioning system that can efficiently improve the thermal environment in the zone.

The first characteristic configuration of the present invention is an air conditioner capable of heating and cooling provided in the space between the room on the upper floor and the room on the lower floor.
The return air passage for the upper floor connecting the return air port for the upper floor facing the room on the upper floor and the air conditioner, and the return air passage for the upper floor.
An upper floor air supply port that connects the upper floor air supply port facing the floor side to the perimeter zone in the upper floor room and the air conditioner, and an upper floor air supply path.
The lower floor return air passage that connects the lower floor return air port facing the room on the lower floor and the air conditioner, and the lower floor return air passage.
A lower floor air supply port that connects the lower floor air supply port facing the ceiling side to the perimeter zone in the lower floor room and the air conditioner, and a lower floor air supply path.
The air conditioner is communicated with the room on the upper floor through the return air port for the upper floor and the return air passage for the upper floor, and the air conditioner is connected to the air supply port for the upper floor and the air conditioner for the upper floor. The upper floor indoor communication state in which the machine and the upper floor room are communicated, and the lower floor room and the air conditioner are communicated with each other through the lower floor return air port and the lower floor return air passage. An air passage switching means capable of switching between a lower floor indoor communication state in which the air conditioner and the lower floor room are communicated through the lower floor air supply port and the lower floor air supply passage.
By controlling the air passage switching means and the air conditioner, air is returned from the room on the upper floor and heated by the air conditioner in the state of communication in the room on the upper floor, and the heated air is heated in the room on the upper floor. The upper floor perimeter heating operation that supplies air to the perimeter zone from the floor side, and the air returned from the lower floor room in the lower floor indoor communication state and cooled by the air conditioner, and the cooling air is cooled by the lower floor. The perimeter zone in the room is equipped with an operation control unit that can selectively execute the lower floor perimeter cooling operation that supplies air from the ceiling side.
The upper floor return air port and the upper floor air supply port are provided so that the upper floor return air port is on the interior zone side and the upper floor air supply port is on the perimeter zone side.
The lower floor return air port and the lower floor air supply port are provided so that the lower floor return air port is on the interior zone side and the lower floor air supply port is on the perimeter zone side.
The upper floor return port and the lower floor return port are arranged so that the upper floor return port is on the perimeter zone side and the lower floor return port is on the interior zone side. The point is that the return air port is provided at a position corresponding to the perimeter zone, and the return air port for the lower floor is provided at a position corresponding to the interior zone .

According to this configuration, when a heating load is generated in the upper floor perimeter zone, the operation control unit can execute the upper floor perimeter heating operation. In this case, the air can be returned from the room on the upper floor and heated by the air conditioner, and the heated air can be supplied to the perimeter zone in the room on the upper floor from the floor side. Therefore, while maintaining the air balance in the room on the upper floor, it is possible to efficiently improve the thermal environment of the perimeter zone in the room on the upper floor by utilizing the natural rise of warm air from the floor side.

When a cooling load is generated in the lower floor perimeter zone, the operation control unit can execute the lower floor perimeter cooling operation. In this case, the air can be returned from the room on the lower floor, cooled by the air conditioner, and the cooled air can be supplied to the perimeter zone in the room on the lower floor from the ceiling side. Therefore, it is possible to efficiently improve the thermal environment of the perimeter zone in the room on the lower floor by utilizing the natural drop of cold air from the ceiling side while maintaining the air balance in the room on the lower floor.

Moreover, since an air conditioner capable of heating and cooling is installed in the space between the upper floor room and the lower floor room, there is no need to install an air conditioner for perimeter air conditioning in the upper floor room and the lower floor room. Therefore, it is possible to make effective use of the indoor space on the upper and lower floors.

From the above, it is possible to make effective use of the indoor space on the upper and lower floors, and while maintaining the air balance in the rooms on the upper and lower floors, the thermal environment of the perimeter zone in the rooms on the upper and lower floors. Can be improved efficiently.
Further, according to this configuration, in both the upper floor perimeter heating operation and the lower floor perimeter cooling operation, air-conditioned air is efficiently supplied to the perimeter zone in the room to heat the room without being disturbed by the return air flow or the like. The environment can be improved efficiently. In addition, by arranging the upper floor air supply port and the lower floor air supply port on the perimeter zone side, it is connected to the upper floor air supply path and the lower floor air supply port connected to the upper floor air supply port. The air supply passages for the lower floors can be integrated on the perimeter zone side of the air conditioner. Therefore, the configuration can be simplified by rationalization such as sharing a part of the air supply duct. By arranging the upper floor return port and the lower floor return port on the interior zone side, the upper floor return port connecting to the upper floor return port and the lower floor return port connecting to the lower floor return port can be connected. The return air passages for the floor can be concentrated on the interior zone side of the air conditioner. Therefore, the configuration can be simplified by rationalization such as sharing a part of the return air duct.

The second characteristic configuration of the present invention is that the upper floor return air passage, the upper floor supply air passage, the lower floor return air passage, and the whole or substantially the entire lower floor air supply passage are described. It is located in the space between the room on the upper floor and the room on the lower floor.

According to this configuration, installation space such as a duct for perimeter air conditioning is not required in the room on the upper floor and the room on the lower floor, and it is possible to make more effective use of the indoor space on the upper floor and the lower floor.

The third characteristic configuration of the present invention includes a slab that separates the upper floor and the lower floor.
An upper floor provided with an underfloor space above the slab is provided.
The air conditioner is provided below the slab in the space between the room on the upper floor and the room on the lower floor.
The upper floor air supply passage includes an upper floor air supply duct that connects the air conditioner and the underfloor space while penetrating the slab.
The air supply port for the upper floor is provided on the floor of the upper floor.
The upper floor air supply passage is configured to be able to supply air to the perimeter zone from the upper floor air supply port of the floor portion through the upper floor air supply duct and the underfloor space.

According to this configuration, the upper floor air supply passage can supply air to the perimeter zone from the upper floor air supply port on the floor through the upper floor air supply duct and the underfloor space, so that the underfloor space can be used for the upper floor. The amount of air supply duct can be reduced by the amount used for the air supply passage. Further, as compared with the case where the air supply duct for the upper floor is provided in the underfloor space, the height of the underfloor space can be lowered to expand the indoor space, and the indoor space can be further effectively used. Moreover, it is possible to effectively supply cooling air to the perimeter zone by effectively utilizing the planar shape of the underfloor space under the floor on the upper floor (shape that extends to the window), and it is possible to effectively supply cooling air to the perimeter zone in the room on the upper floor. The thermal environment can be effectively improved.

Cross-sectional view showing the schematic configuration of the perimeter air conditioning system in the upper floor perimeter heating operation Cross-sectional view showing the schematic configuration of the perimeter air conditioning system in the lower floor perimeter cooling operation

An embodiment of the perimeter air conditioning system according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the perimeter air conditioning system 1 is provided in a building 2 having a large number of floors, and is arranged corresponding to each of the plurality of floors. 1 and 2 show vertical cross-sectional views of parts corresponding to two floors in the building 2. In FIGS. 1 and 2, the portion through which air flows is shown by a thick line, and only the portion through which air flows is different. The perimeter air-conditioning system 1 provided on the floor located in the above will be described.

The building 2 is provided with a slab 5 that separates the upper floor and the lower floor. The floor portion 6 on the upper floor is provided above the slab 5, and the underfloor spaces 7a and 7b are provided below the floor portion 6 on the upper floor. The underfloor spaces 7a and 7b are provided in a portion corresponding to the perimeter zone 3a on the upper floor in the floor portion 6 on the upper floor, and the first underfloor space 7a located on the perimeter zone 3a side and the first underfloor space 7a located on the interior zone 3b side. It is divided into two underfloor spaces 7b. A ceiling portion 8 on the lower floor is provided below the slab 5, and a ceiling space 9 is provided between the slab 5 and the ceiling portion 8 on the lower floor.

The perimeter air-conditioning system 1 is configured to air-condition the perimeter zone 3a adjacent to the window portion 3c in the room 3 on the upper floor and the perimeter zone 4a adjacent to the window portion 4c in the room 4 on the lower floor. The perimeter air conditioning system 1 includes an air conditioner 11 capable of heating and cooling, an upper floor return air passage 12, an upper floor supply air passage 13, a lower floor return air passage 14, a lower floor supply air passage 15, and an air passage switching means 30. , An operation control unit 40 and the like for controlling the operation of the perimeter air conditioning system 1 are provided. Incidentally, as for the operation control unit 40, for example, an operation control unit 40 is provided for each of the perimeter air conditioning systems 1 provided on each floor, and a plurality of operation control units 40 can be freely communicated with each other. As a result, not only can the perimeter zones 3a and 4a be individually air-conditioned on each floor, but when the perimeter zones 3a and 4a are air-conditioned on one floor, the perimeter zones 3a and 4a can be simultaneously air-conditioned on the other floors. The air conditioning of 4a can be performed. In FIGS. 1 and 2, only the perimeter air-conditioning system 1 provided on the floor located in the central portion in the vertical direction is shown.

The air conditioner 11 is provided in the ceiling space 9 between the room 3 on the upper floor and the room 4 on the lower floor. The air conditioner 11 includes a fan 21 for passing air through the upper floor return air passage 12 or the lower floor return air passage 14 and the upper floor supply air passage 13 or the lower floor supply air passage 15, and an upper floor use. An air conditioning processing unit 22 for air-conditioning the return air (air) from the rooms 3 and 4 supplied through the return air passage 12 or the return air passage 14 for the lower floor is provided.

The air conditioner 11 is configured to be freely switchable between a cooling operation state and a heating operation state. In the cooling operation state, a heat medium for cooling (for example, cold water) is circulated and supplied to the air conditioning processing unit 22 from a heat source (not shown), and is supplied through the return air passage 12 for the upper floor or the return air passage 14 for the lower floor. The return air (air) is cooled by the air conditioning processing unit 22. In the heating operation state, a heat medium for heating (for example, hot water) is circulated and supplied to the air conditioning processing unit 22 from a heat source (not shown), so that the heat medium is supplied through the return air passage 12 for the upper floor or the return air passage 14 for the lower floor. The return air (air) is heated by the air conditioning processing unit 22.

The return air passage 12 for the upper floor is configured to allow air in the room 3 on the upper floor to pass through and supply (return air) to the air conditioner 11. The return air passage 12 for the upper floor connects the return air port 16 for the upper floor facing the room 3 on the upper floor and the air conditioner 11. The return air port 16 for the upper floor is provided on the floor portion 6 of the upper floor in a state where the perimeter zone 3a on the upper floor and the second underfloor space 7b communicate with each other. The return air port 16 for the upper floor can be formed in a shape extending along the window portion 3c, or can be formed dispersed in a direction extending along the window portion 3c. The upper floor return air passage 12 includes an upper floor return air duct 12a that connects the second underfloor space 7b and the air conditioner 11 in a state of penetrating the slab 5. The upper floor return air passage 12 sucks air from the upper floor room 3 (near the perimeter zone 3a) from the upper floor return port 16 on the upper floor portion 6, and the sucked air is used as the second underfloor space. Air is returned to the air conditioner 11 through 7b and the return air duct 12a for the upper floor.

The air supply passage 13 for the upper floor is configured to supply the conditioned air from the air conditioner 11 to the perimeter zone 3a of the room 3 on the upper floor. The upper floor air supply passage 13 connects the upper floor air supply port 17 facing from the floor side to the perimeter zone 3a of the room 3 on the upper floor and the air conditioner 11. The air supply port 17 for the upper floor is provided on the floor portion 6 of the upper floor in a state where the perimeter zone 3a on the upper floor and the first underfloor space 7a communicate with each other. The air supply port 17 for the upper floor can be formed in a shape extending along the window portion 3c, or can be formed dispersed in a direction extending along the window portion 3c. The upper floor air supply port 17 can be arranged at the same position as or at a different position from the upper floor return air port 16 in the direction extending along the window portion 3c. The upper floor air supply passage 13 includes an upper floor air supply duct 13a that connects the air conditioner 11 and the first underfloor space 7a in a state of penetrating the slab 5. The upper floor air supply passage 13 allows the conditioned air from the air conditioner 11 to pass through the upper floor air supply duct 13a and the first underfloor space 7a from the upper floor air supply port 17 in the upper floor portion 6 to the upper floor. Air is supplied to the perimeter zone 3a.

As shown in FIG. 2, the return air passage 14 for the lower floor is configured to allow air in the room 4 on the lower floor to pass through and supply (return air) to the air conditioner 11. The lower floor return air passage 14 connects the lower floor return air port 18 facing the room 4 on the lower floor and the air conditioner 11. The return air port 18 for the lower floor is provided in the ceiling portion 8 of the lower floor in a state where the room 4 (near the interior zone 4b) of the lower floor and the ceiling space 9 communicate with each other. The lower floor return air passage 14 sucks air from the lower floor return air port 18 in the lower floor ceiling portion 8 to the lower floor room 4 (interior zone 4b), and returns the sucked air to the air conditioner 11. I'm worried.

As shown in FIG. 2, the lower floor air supply passage 15 is configured to supply the conditioned air from the air conditioner 11 to the perimeter zone 4a of the room 4 on the lower floor. The lower floor air supply passage 15 connects the lower floor air supply port 19 facing from the ceiling side to the perimeter zone 4a of the room 4 on the lower floor and the air conditioner 11. The lower floor air supply port 19 is provided on the lower floor ceiling portion 8 in a state where the lower floor perimeter zone 4a and the ceiling space 9 communicate with each other. The lower floor air supply port 19 can be formed in a shape extending along the window portion 4c, or can be formed dispersed in a direction extending along the window portion 4c. The lower floor air supply port 19 can be arranged at the same position as or at a different position from the lower floor return air port 18 in the direction extending along the window portion 4c. The lower floor air supply passage 15 supplies the conditioned air from the air conditioner 11 to the lower floor perimeter zone 4a from the lower floor air supply port 19 in the ceiling portion 8 of the lower floor.

As shown in FIG. 1, the positional relationship between the upper floor return air port 16 and the upper floor air supply port 17 in the room 3 on the upper floor is that the upper floor return air port 16 is for the upper floor on the interior zone 3b side. The air supply port 17 is provided so as to be on the perimeter zone 3a side. The return air port 16 for the upper floor is provided in the second underfloor space 7b, and the air supply port 17 for the upper floor is provided in the first underfloor space 7a. The first underfloor space 7a and the second underfloor space 7b are arranged at a predetermined distance. As a result, the return air port 16 for the upper floor and the air supply port 17 for the upper floor are arranged at a predetermined distance, so that the air conditioning air from the air supply port 17 for the upper floor is appropriately supplied to the perimeter zone 3a. It is possible to supply air, and it is possible to prevent the occurrence of a short circuit in which the air-conditioning air from the air supply port 17 for the upper floor is directly sucked from the return air port 16 for the upper floor.

Regarding the positional relationship between the lower floor return air port 18 and the lower floor air supply port 19 in the room 4 on the lower floor, the lower floor return air port 18 is on the interior zone 4b side and the lower floor air supply port 19 is the perimeter zone. It is provided in an arrangement state on the 4a side. The lower floor return air port 18 is located, for example, at a position corresponding to the interior zone 3b on the lower floor, and is separated from the lower floor air supply port 19 arranged at a position corresponding to the perimeter zone 4a on the lower floor. It is placed in the same position.

Since the return air passage 12 for the upper floor and the return air passage 14 for the lower floor are connected to the air conditioner 11 from the interior zones 3b and 4b, a part of the flow path portion on the side connected to the air conditioner 11 is. , The air conditioner 11 is integrated on the interior zones 3b and 4b, and is composed of a common flow path portion (return air duct). Since the upper floor air supply passage 13 and the lower floor air supply passage 15 are connected to the air conditioner 11 from the perimeter zones 3a and 4a side, a part of the flow path portion on the side connected to the air conditioner 11 is. , It is integrated on the perimeter zones 3a and 4a side of the air conditioner 11 and is composed of a common flow path portion (air supply duct).

Most of the upper floor return air duct 12a of the upper floor return air passage 12 is provided in the ceiling space 9 on the lower floor, and the remaining part thereof penetrates the slab 5. Most of the upper floor air supply duct 13a of the upper floor air supply passage 13 is provided in the ceiling space 9 on the lower floor, and the remaining part thereof penetrates the slab 5. The lower floor return air passage 14 and the lower floor air supply passage 15 are provided in the ceiling space 9 on the lower floor. As a result, most of the upper floor return air passage 12, the upper floor supply air passage 13, the lower floor return air passage 14, and the lower floor air supply passage 15 are provided in the ceiling space 9 on the lower floor. Has been done. Since the return air passage 12 for the upper floor includes the second underfloor space 7b and the air supply passage 13 for the upper floor includes the first underfloor space 7a, the return air passage 12 for the upper floor and the return air passage 12 for the upper floor The entire or substantially the entire supply air passage 13, the return air passage 14 for the lower floor, and the air supply passage 15 for the lower floor are provided in the space between the room 3 on the upper floor and the room 4 on the lower floor. There is.

The air passage switching means 30 includes a first on-off valve 31 arranged in the middle part of the return air passage 12 for the upper floor, a second on-off valve 32 arranged in the middle part of the air supply passage 13 for the upper floor, and a lower part. A third on-off valve 33 arranged in the middle part of the return air passage 14 for the floor and a fourth on-off valve 34 arranged in the middle part of the air supply passage 15 for the lower floor are provided.

The air passage switching means 30 changes the communication state in the room 3 on the upper floor, the room 4 on the lower floor, and the air conditioner 11 to the communication state in the upper floor room (see FIG. 1) and the communication state in the lower floor room (see FIG. 2). It is configured to be freely switchable to and. In the upper floor indoor communication state, as shown in FIG. 1, the air passage switching means 30 opens the first on-off valve 31 and the second on-off valve 32 (shown in black in FIG. 1) and opens and closes the third. The valve 33 and the fourth on-off valve 34 are in the closed state (shown in white in FIG. 1). As a result, in the upper floor indoor communication state, the upper floor room 3 and the air conditioner 11 are communicated with each other through the upper floor return air port 16 and the upper floor return air passage 12, and the upper floor air supply port 17 and The air conditioner 11 and the room 3 on the upper floor are communicated with each other through the air supply passage 13 for the upper floor. In the lower floor indoor communication state, as shown in FIG. 2, the air passage switching means 30 closes the first on-off valve 31 and the second on-off valve 32 (shown in white in FIG. 2) and opens and closes the third. The valve 33 and the fourth on-off valve 34 are in the open state (shown in black in FIG. 2). As a result, the room 4 on the lower floor and the air conditioner 11 are communicated with each other through the return air port 18 for the lower floor and the return air passage 14 for the lower floor, and the air supply port 19 for the lower floor and the air supply passage 15 for the lower floor are communicated with each other. The air conditioner 11 and the room 4 on the lower floor are communicated with each other through the air conditioner 11.

The operation control unit 40 controls the operation of the perimeter air conditioning system 1 by controlling the air passage switching means 30 and the air conditioner 11. The operation control unit 40 is configured to be able to selectively execute the upper floor perimeter heating operation and the lower floor perimeter cooling operation based on a command from a remote controller or the like.

In the upper floor perimeter heating operation, as shown in FIG. 1, the operation control unit 40 switches the air passage switching means 30 to the upper floor indoor communication state and switches the air conditioner 11 to the heating operation state. As a result, the air is returned from the room 3 on the upper floor and heated by the air conditioner 11 in the state of communication in the room on the upper floor, and the heated air is supplied to the perimeter zone 3a on the upper floor from the floor side. Therefore, it is possible to efficiently improve the thermal environment of the perimeter zone 3a on the upper floor by utilizing the natural rise of warm air from the floor side while maintaining the air balance of the room 3 on the upper floor.

In the lower floor perimeter cooling operation, as shown in FIG. 2, the operation control unit 40 switches the air passage switching means 30 to the lower floor indoor communication state, and switches the air conditioner 11 to the cooling operation state. As a result, the air is returned from the room 4 on the lower floor and cooled by the air conditioner 11 in the state of communication in the room on the lower floor, and the cooled air is supplied to the perimeter zone 4a on the lower floor from the ceiling side. Therefore, it is possible to efficiently improve the thermal environment of the perimeter zone 4a on the lower floor by utilizing the natural drop of cold air from the ceiling side while maintaining the air balance of the room 4 on the lower floor.

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configuration of each embodiment described below is not limited to being applied independently, but can also be applied in combination with the configuration of other embodiments.

(1) In the above embodiment, the positional relationship between the upper floor return air port 16 and the upper floor air supply port 17 in the room 3 on the upper floor is such that the upper floor return air port 16 is on the upper floor on the interior zone 3b side. Although the air supply port 17 is arranged so as to be on the perimeter zone 3a side, the positional relationship between the return air port 16 for the upper floor and the air supply port 17 for the upper floor can be changed as appropriate. For example, the return air port 16 for the upper floor may be provided on the perimeter zone 3a side and the air supply port 17 for the upper floor may be provided on the interior zone 3b side. Further, the return air port 16 for the upper floor and the air supply port 17 for the upper floor can be alternately arranged in the direction extending along the window portion 3c.

(2) In the above embodiment, the positional relationship between the lower floor return air port 18 and the lower floor air supply port 19 in the lower floor room 4 is such that the lower floor return air port 18 is on the lower floor on the interior zone 4b side. Although the air supply port 19 is arranged so as to be on the perimeter zone 4a side, the positional relationship between the return air port 18 for the lower floor and the air supply port 19 for the lower floor can be changed as appropriate. For example, the lower floor return air port 18 may be provided on the perimeter zone 4a side and the lower floor air supply port 19 may be provided on the interior zone 4b side. Further, the lower floor return air port 18 and the lower floor air supply port 19 can be alternately arranged in the direction extending along the window portion 4c.

(3) In the above embodiment, the configuration in which the air passage switching means 30 is provided with the first to fourth on-off valves 31 to 34 is exemplified, but it is possible to switch between the upper floor indoor communication state and the lower floor indoor communication state. It suffices as long as it can be used, and the configuration to be adopted can be changed as appropriate.
For example, a three-way valve is provided at the upstream end of a common flow path portion between the upper floor return air passage 12 and the lower floor return air passage 14, and the upper floor air supply passage 13 and the lower floor supply air passage 15 are provided. It is also possible to apply a configuration in which a three-way valve is provided at the downstream end of a common flow path portion and two three-way valves are provided.

1 Perimeter air conditioning system 3 Upper floor room 3a Perimeter zone 3b Interior zone 4 Lower floor room 4a Perimeter zone 4b Interior zone 5 Slab 6 Upper floor floor 7a First underfloor space (underfloor space)
11 Air conditioner 12 Upper floor return air passage 13 Upper floor air supply passage 14 Lower floor return air passage 15 Lower floor air supply passage 16 Upper floor return air port 17 Upper floor air supply port 18 Lower floor return Air port 19 Lower floor air supply port 30 Air passage switching means 40 Operation control unit

Claims (3)

An air conditioner capable of heating and cooling installed in the space between the room on the upper floor and the room on the lower floor,
The return air passage for the upper floor connecting the return air port for the upper floor facing the room on the upper floor and the air conditioner, and the return air passage for the upper floor.
An upper floor air supply port that connects the upper floor air supply port facing the floor side to the perimeter zone in the upper floor room and the air conditioner, and an upper floor air supply path.
The lower floor return air passage that connects the lower floor return air port facing the room on the lower floor and the air conditioner, and the lower floor return air passage.
A lower floor air supply port that connects the lower floor air supply port facing the ceiling side to the perimeter zone in the lower floor room and the air conditioner, and a lower floor air supply path.
The air conditioner is communicated with the room on the upper floor through the return air port for the upper floor and the return air passage for the upper floor, and the air conditioner is connected to the air supply port for the upper floor and the air conditioner for the upper floor. The upper floor indoor communication state in which the machine and the upper floor room are communicated, and the lower floor room and the air conditioner are communicated with each other through the lower floor return air port and the lower floor return air passage. An air passage switching means capable of switching between a lower floor indoor communication state in which the air conditioner and the lower floor room are communicated through the lower floor air supply port and the lower floor air supply passage.
By controlling the air passage switching means and the air conditioner, air is returned from the room on the upper floor and heated by the air conditioner in the state of communication in the room on the upper floor, and the heated air is heated in the room on the upper floor. The upper floor perimeter heating operation that supplies air to the perimeter zone from the floor side, and the air returned from the lower floor room in the lower floor indoor communication state and cooled by the air conditioner, and the cooling air is cooled by the lower floor. The perimeter zone in the room is equipped with an operation control unit that can selectively execute the lower floor perimeter cooling operation that supplies air from the ceiling side.
The upper floor return air port and the upper floor air supply port are provided so that the upper floor return air port is on the interior zone side and the upper floor air supply port is on the perimeter zone side.
The lower floor return air port and the lower floor air supply port are provided so that the lower floor return air port is on the interior zone side and the lower floor air supply port is on the perimeter zone side.
The upper floor return port and the lower floor return port are arranged so that the upper floor return port is on the perimeter zone side and the lower floor return port is on the interior zone side. A perimeter air conditioning system in which the return air port is provided at a position corresponding to the perimeter zone, and the return air port for the lower floor is provided at a position corresponding to the interior zone . The upper floor return air passage, the upper floor supply air passage, the lower floor return air passage, and the whole or substantially the entire lower floor air supply passage are in the room of the upper floor and the lower floor. The perimeter air conditioning system according to claim 1, which is provided in a space between the room and the room. The slab that separates the upper floor and the lower floor,
An upper floor provided with an underfloor space above the slab is provided.
The air conditioner is provided below the slab in the space between the room on the upper floor and the room on the lower floor.
The upper floor air supply passage includes an upper floor air supply duct that connects the air conditioner and the underfloor space while penetrating the slab.
The air supply port for the upper floor is provided on the floor of the upper floor.
According to claim 1 or 2, the upper floor air supply passage is configured to be able to supply air to the perimeter zone from the upper floor air supply port of the floor portion through the upper floor air supply duct and the underfloor space. The perimeter air conditioning system described.

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