JP6809692B2 - Exhaust-compatible floor-standing wall-through air conditioner and air conditioning system equipped with this air conditioner - Google Patents

Description

The present invention relates to a wall-through type air conditioner and an air conditioner system.

Conventionally, a heat exchange unit that blows out air into a room after contacting the air supplied from the air supply port with a cold / hot water coil, and either outside air or indoor return air to the air supply port of the heat exchange unit, or both of them. A wall-through type multi-fan coil unit including an air supply unit for supplying mixed air and an exhaust unit for exhausting indoor air to the outside has been proposed (for example, Patent Document 1). According to such a wall-through type multi-fan coil unit, it is possible to cool the outside air, and since it is divided into three units, a heat exchange unit, an air supply unit, and an exhaust unit, the arrangement of each unit can be changed to vary. It is possible to freely adopt the configuration corresponding to the air conditioner installation conditions of.

Further, an air conditioning system in which a dedicated outdoor unit installation space for installing an air conditioning outdoor unit on each floor is provided outside a living room space provided with an air conditioning indoor unit has also been proposed (for example, Patent Document 2). ). In this air-conditioning system, an outer wall having a louver is provided outside the outdoor unit installation space, and an atrium space that communicates over multiple floors of the building is provided between the living room space and the outdoor unit installation space. Then, the exhaust from the living room space is blown out to the atrium space, and the mixed air of the indoor air and the outside air exhausted to the atrium space is supplied to the intake port of the outdoor unit, and the heat possessed by the indoor air (in summer). (Colder than the outside air and warmer than the outside air in winter) is recovered by the heat exchanger of the outdoor unit, and the heat recovered air is exhausted to the outside through the exhaust port of the outdoor unit. The louver on the outer wall is provided near the exhaust port of the outdoor unit.

In addition, it is a heat recovery external control system that supplies and exhausts heat to and from the indoor zone where local exhaust is performed. A heat pump type external air conditioner that exchanges heat and supplies air to the indoor zone has also been proposed (for example, Patent Document 3). In this example, the amount of outside air including the recovered heat equivalent to the amount of local exhaust is returned to the duct group that connects the heat pump type external conditioner and the outdoor and indoor zones so that the air can be supplied and exhausted freely. Provide a damper mechanism that can adjust the air volume to replenish and flow to the heat pump type external air conditioner.

Japanese Unexamined Patent Publication No. 7-324805 Japanese Unexamined Patent Publication No. 2014-20748 Japanese Unexamined Patent Publication No. 2003-185291

The wall-through type air conditioning unit is generally an air heat source heat pump air conditioner that performs heating and cooling by exchanging heat with the atmosphere. Therefore, it is easily affected by the outside air temperature, and the heat exchange efficiency is lowered especially in the midsummer and the severe winter, and there is a concern that the air conditioning capacity is lowered and the defrosting operation is repeated.

Therefore, an object of the present invention is to improve the heat exchange efficiency of the wall-through type air conditioning unit.

The wall-through unit according to the present invention constitutes a refrigeration cycle, and air-conditions by taking in recirculated air from a room, an air-conditioning target heat exchanger that exchanges heat with the air-conditioned object, an external heat source heat exchanger that exchanges heat with an external heat source, and the air-conditioned An indoor blower that blows air to the target heat exchanger and supplies the air after heat exchange into the room, and an indoor air or outdoor air that is taken in and blown to the external heat source heat exchanger after heat exchange. It is provided with an outdoor blower that exhausts air to the outside and a flow path switching means for switching the flow path of air taken into the outdoor blower.

In this way, the external heat source heat exchanger can exchange heat with the indoor air or the outdoor air. In particular, if heat exchange is performed using the exhaust heat when exhausting the indoor air, the operation can be performed without being affected by the outside air temperature, and the heat exchange efficiency of the wall-through type air conditioner can be improved. it can.

In addition, a sensor for measuring the magnitude of the outside air flowing back to the exhaust side of the outdoor blower is further provided, and when the sensor detects a wind pressure equal to or higher than a predetermined threshold value, the flow path switching means takes the outside air into the outdoor blower. The flow path may be changed. When a wall-through type air conditioner exhausts air, wind pressure resistance becomes a problem, especially in high-rise buildings. When the wind pressure of the outside air exceeds a predetermined threshold value, the cooling / heating capacity of the wall-through type air conditioner can be appropriately maintained by performing the above-mentioned control.

Further, an outside air introduction path communicating with the inside of the room may be provided on the extension of the flow path for taking the outside air into the outdoor blower, and the outside air introduction path may have an opening / closing means for opening and closing the outside air introduction path. By providing such an outside air introduction path, it becomes possible to simply function as a vent without operating the wall-through type air conditioner.

Further, the present invention includes the above-mentioned wall-through type air conditioner and an interior side air conditioner that mainly performs air conditioning for the interior zone of the room, and is linked with the amount of air supplied by the interior side air conditioner. Therefore, it may be realized as an air conditioning system that changes the amount of exhaust by a wall-through type air conditioner.

The contents of the means for solving the above problems can be combined as much as possible without departing from the problems and technical ideas of the present invention.

According to the present invention, the heat exchange efficiency of the wall-through type air conditioning unit can be improved.

It is a perspective view which shows an example of the internal structure of the wall-through unit which concerns on embodiment schematically. It is a figure which shows typically an example of the ventilation path formed in the wall-through unit. It is a figure which shows an example of the whole air-conditioning system of a building which concerns on embodiment. It is a figure for demonstrating the exhaust mode of a wall-through unit. It is a figure for demonstrating the circulation mode of a wall-through unit. It is a figure for demonstrating the outside air cooling mode of a wall-through unit. It is a figure for demonstrating the disaster air supply mode of a wall-through unit. It is a schematic diagram for demonstrating the normal operation of an air conditioning system. It is a schematic diagram for demonstrating the operation by the air-conditioning on the interior side of an air-conditioning system. It is a schematic diagram for demonstrating operation by a wall-through unit of an air-conditioning system. It is a schematic diagram for demonstrating the outside air cooling operation of an air conditioning system. It is a schematic diagram for demonstrating the disaster air supply operation of an air conditioning system. It is a table comparing the energy consumption efficiency between the wall-through unit according to the embodiment and the conventional wall-through unit.

Hereinafter, embodiments of the wall-through unit according to the present invention will be described with reference to the drawings. The present embodiment is an example, and the present invention is not limited to the configuration of the embodiment.

<Wall-through unit configuration>
FIG. 1 is a perspective view schematically showing an example of the internal structure of the wall-through unit 1 according to the present embodiment. Further, FIG. 2 is a diagram schematically showing an example of a ventilation path formed inside the wall-through unit 1. The wall-through unit 1 is a floor-standing air-cooled heat pump air conditioner that communicates with the outdoor air supply port 21 and the outdoor exhaust port 22 provided on the wall surface (inside the outer wall) of the building 2 to supply and exhaust air. Is. The outdoor air supply port 21 and the outdoor exhaust port 22 are openings such as slits and shavings provided on the wall surface of the building 2. Further, the broken line in the wall-through unit 1 shown in FIG. 2 represents a ventilation path that can be formed.

In the wall-through unit 1, the compressor 101, the outdoor heat exchanger 102, the expansion valve (not shown), and the indoor heat exchanger 103 form a refrigeration cycle inside the wall-through unit 1. It is an air conditioner that is provided and can perform air conditioning operation. The compressor 101 compresses a predetermined refrigerant that circulates in the refrigeration cycle. Further, the refrigerant whose pressure and temperature have risen is sent to the outdoor heat exchanger 102 which functions as a condenser during cooling, and is sent to the indoor heat exchanger 103 which functions as a condenser during heating. , Let each heat exchange. In other words, the outdoor heat exchanger 102 is an external heat source heat exchanger that exchanges heat with an external heat source, and the indoor heat exchanger 103 is an air-conditioned heat exchanger that exchanges heat with the indoor air to be air-conditioned. Is.

Further, the wall-through unit 1 is provided with a damper (also referred to as a "flow path switching means" or "opening / closing means") so as to form a predetermined ventilation path inside, and the outdoor heat exchanger 102 is provided with a damper. An outdoor fan 104, which is a blower that blows air to exchange heat, and an indoor fan 105, which is a blower that blows air to exchange heat with the indoor heat exchanger 103, are provided.

The indoor fan 105 takes in indoor air from, for example, the first return air introduction port 106 provided on the bottom surface of the wall-through unit 1, and exchanges heat with the indoor heat exchanger 103 in the wall-through unit 1. For example, it is returned to the room from the air supply outlet 107 provided on the upper surface. In FIG. 2, the first return air is indicated by arrow RA (Return Air) 1, and the supply air is indicated by arrow SA (Supply Air).

Further, the outdoor fan 104 is either a second return air introduction port 108 provided on the indoor side such as a side surface of the wall-through unit 1 or an outside air introduction port 109 that takes in outside air from the outdoor air supply port 21. Take in air alternately from. In FIG. 2, the second return air is indicated by arrow RA2, and the outside air is indicated by OA (Outside Air). Further, a motor damper 112 (shown in FIG. 2) is arranged in a ventilation path for taking in the second return air to the outdoor fan 104, and a motor damper 113 (shown in FIG. 2) is provided in the ventilation path for taking in the outside air into the outdoor fan 104. It is arranged.

Then, the outdoor fan 104 is provided, for example, on the side surface of the wall surface of the building, and sends air to the exhaust port 111 that exhausts air to the outdoor exhaust port 22 via the outdoor heat exchanger 102. Further, an outside air introduction path communicating with the indoor air supply port 110 provided on the indoor side surface of the wall-through unit 1 is provided on the extension of the flow path for taking in the outside air from the outside air introduction port 109, and the motor damper 114 ( (Shown in FIG. 2) is arranged. In FIG. 2, the outside air taken into the room is indicated as FA (Fresh Air), and the exhaust is indicated as EA (Exhaust Air).

<Overall configuration of air conditioning system>
FIG. 3 is a diagram showing an example of the entire air conditioning system of the building 2 according to the present embodiment. The wall-through unit 1 is provided in the perimeter zone of the building 2 (the area within the broken line in FIG. 2). That is, the wall-through unit 1 is arranged at a boundary portion between the indoor and outdoor areas, which is easily influenced by the outside world, and operates according to the indoor and outdoor conditions. Further, each floor of the building 2 is provided with a main air conditioner 3 (also referred to as an interior side air conditioner) that mainly performs air conditioning in the interior zone (the area within the alternate long and short dash line in FIG. 2). The air conditioner 3 is a variable air volume (VAV) type air conditioner, and the air volume can be changed according to the indoor load and the like. Further, in the example of FIG. 2, a so-called central air conditioning system is adopted. The operation of the wall-through unit 1 according to the present embodiment is controlled by a monitoring control unit (not shown) in the entire air conditioning system, and also serves as an exhaust port in the air conditioning system.

Next, the operation mode of the wall-through unit 1 will be described.

<Exhaust mode>
FIG. 4 is a diagram for explaining an exhaust mode of the wall-through unit 1. In the exhaust mode, the motor damper 112 provided in the ventilation path for taking in the second return air to the outdoor fan 104 is opened, and the ventilation path from the outside air introduction port 109 for taking in the outside air from the outdoor air supply port 21 to the outdoor fan 104. The motor damper 113 provided in the above is closed, and the motor damper 114 provided in the ventilation path to the indoor air supply port 110 for passing the outside air taken in from the outside air introduction port 109 into the room is closed. The amount of air blown by the outdoor fan 104 may be controlled in the entire system.

Further, the indoor fan 105 is operated, and the indoor heat exchanger 103 exchanges heat between the indoor air and the refrigerant, and mainly performs air conditioning around the wall-through unit 1.

In the exhaust mode, the wall-through unit 1 exhausts the air in the room. As a result, the pressure inside the room becomes negative, so that outside air is taken into the room through the air conditioner 3 or other vents. On the other hand, in the outdoor heat exchanger 102, heat exchange is performed by utilizing the exhaust gas from the room. When cooling in the summer, indoor air that is generally lower than the outside air is used, and when heating in the winter, indoor air that is generally higher than the outside air is used to exchange heat. In either case, since heat is recovered from the exhaust gas and heat is exchanged, it can be said that the efficiency is higher than that of heat exchange using outside air. Further, as the entire air conditioning system of the building 2, by using the wall-through unit 1 as an exhaust port, it is not necessary to provide an exhaust port in the room.

<Circulation mode>
FIG. 5 is a diagram for explaining the circulation mode of the wall-through unit 1. In the circulation mode, the motor damper 112 provided in the ventilation path for taking in the second return air to the outdoor fan 104 is closed, and the ventilation path from the outside air introduction port 109 for taking in the outside air from the outdoor air supply port 21 to the outdoor fan 104. The motor damper 113 provided in the above is opened, and the motor damper 114 provided in the ventilation path to the indoor air supply port 110 for passing the outside air taken in from the outside air introduction port 109 into the room is closed. Even in the circulation mode, the air volume of the outdoor fan 104 may be controlled in the entire system.

Further, the indoor fan 105 is operated, and the indoor heat exchanger 103 exchanges heat between the indoor air and the refrigerant, and mainly performs air conditioning around the wall-through unit 1.

In the circulation mode, the wall-through unit 1 does not exhaust air, and the outdoor heat exchanger 102 uses outside air for heat exchange. A plurality of wall-through units 1 are provided in the room of the building 2, and the number of wall-through units 1 operating in the circulation mode and the number of wall-through units 1 operating in the exhaust mode described above are appropriately changed. , The air conditioning performance of the entire system may be controlled.

<Outside air cooling mode>
FIG. 6 is a diagram for explaining an outside air cooling mode of the wall-through unit 1. The outside air cooling mode is a mode in which, for example, when the outside air temperature is lower than the room temperature, the indoor fan 105 and the compressor 101 are stopped, and air conditioning is performed only by introducing the outside air.

In the outside air cooling mode, the motor damper 112 provided in the ventilation path for taking in the second return air to the outdoor fan 104 is opened, and the outside air is taken in from the outdoor air supply port 21. The ventilation from the outside air introduction port 109 to the outdoor fan 104. The motor damper 113 provided on the road is closed, and the motor damper 114 provided on the ventilation path to the indoor air supply port 110 for passing the outside air taken in from the outside air introduction port 109 into the room is closed. Even in the outside air cooling mode, the air volume of the outdoor fan 104 may be controlled in the entire system.

In the outside air cooling mode, the wall-through unit 1 exhausts the indoor air. As a result, the room becomes negative pressure, so that outside air is taken into the room through other vents and the like. Further, the wall-through unit 1 may exhaust the air in the room in conjunction with the amount of air blown from the air conditioner 3 described above.
<Disaster air supply mode>
FIG. 7 is a diagram for explaining a disaster air supply mode of the wall-through unit 1. The disaster air supply mode is a mode in which the wall-through unit 1 functions as a ventilation port on the wall surface by opening a damper when, for example, the supply of electric power to the air conditioning system may be stopped after an earthquake occurs.

In the disaster air supply mode, the motor damper 112 provided in the ventilation path for taking in the second return air to the outdoor fan 104 is closed, and the outside air is taken in from the outdoor air supply port 21 from the outside air introduction port 109 to the outdoor fan 104. The motor damper 113 provided in the ventilation path is opened, and the motor damper 114 provided in the ventilation path to the indoor air supply port 110 for passing the outside air taken in from the outside air introduction port 109 into the room is opened. The compressor 101, the outdoor fan 104, and the indoor fan 105 are stopped.

In the disaster air supply mode, the wall-through unit 1 simply functions as a vent. A plurality of wall-through units 1 are provided in the room of the building 2, and for example, air is naturally supplied to the room and exhaust air is provided from the room according to the direction of the wind outside the room so that ventilation can be performed.

<Wind pressure resistant mode>
In the exhaust mode described above, the outdoor fan 104 of the wall-through unit 1 exhausts the indoor air. Therefore, when the wind at a certain wind speed is received toward the outdoor exhaust port 22 of the building 2 outdoors, the wind may flow back to the exhaust port 111 and the outdoor fan 104 may not function sufficiently. Therefore, for example, a pressure sensor or a flow rate sensor is provided at the exhaust port 111, and when a wind speed equal to or higher than a predetermined threshold value is detected, the exhaust mode is shifted to the circulation mode. In particular, such a protective operation is called a wind pressure resistant mode for convenience. In the circulation mode, the outside air is circulated from the outside air introduction port 109 communicating with the outdoor air supply port 21 and the outdoor exhaust port 22 provided on the same wall surface of the building 2 to the exhaust port 111, so that the outside air introduction port is tentatively used. Even when the wind of the same wind speed is received by the 109 and the exhaust port 111, the wind flowing in the opposite direction to the exhaust port 111 and the wind flowing in the forward direction to the outside air introduction port 109 are balanced, so that the outdoor fan 104 Can operate with the same load as in the case of no wind.

Next, the operation of the entire air conditioning system will be described.

<Normal operation of air conditioning system>
FIG. 8 is a schematic diagram for explaining the normal operation of the air conditioning system on a certain floor of the building 2. In the example of FIG. 8, two wall-through units 1 are shown, but the number is not particularly limited. In normal operation, for example, a sensor for measuring the carbon dioxide concentration in the room is provided, and the amount of air blown by the fan of the wall-through unit 1 is changed so that the carbon dioxide concentration approaches a predetermined target value, or a plurality of wall-through units 1 are used. Of these, the number of units operated in "exhaust mode" is changed. The plurality of wall-through units 1 operate in the "exhaust mode" or the "circulation mode", but some of them may be stopped. Further, for example, when a part of the wall-through unit 1 shifts to the above-mentioned "wind pressure resistant mode", the number of other wall-through units 1 operating in the "exhaust mode" is increased. That is, when the wall-through unit 1 provided along a certain surface of the outer wall of the building detects a wind speed equal to or higher than a predetermined threshold value, the mode shifts to the “wind pressure resistant mode”. Even in this case, the number of wall-through units 1 in operation can be adjusted in the entire living room by operating the wall-through units 1 provided along the other surfaces in the “exhaust mode”.

The carbon dioxide concentration also changes depending on the amount of air supplied from the air conditioner 3 on the interior side. That is, it can be said that the wall-through unit 1 can be operated in conjunction with the air conditioner 3 on the interior side by operating according to the carbon dioxide concentration. As described above, the wall-through unit 1 according to the present embodiment is interlocked with the equipment on the interior side, and in particular, the wall-through unit 1 operating in the exhaust mode can efficiently exchange heat by utilizing the heat of the exhaust gas. it can.

<Operation by air conditioning on the interior side>
FIG. 9 is a schematic diagram for explaining the operation of the air conditioning system on a certain floor of the building 2 by the interior side air conditioning. Although the example of FIG. 9 also shows two wall-through units 1, the number is not particularly limited. In this example, the air conditioner 3 on the interior side performs air conditioning while taking in outside air. On the other hand, the wall-through unit 1 operates in the above-mentioned "outside air cooling mode", controls the exhaust amount, and reduces the power consumption by stopping the compressor 101 and the indoor fan 105. For example, such an operation can be adopted when the air conditioning load is lighter than that of the normal operation.

<Operation by wall-through unit>
FIG. 10 is a schematic diagram for explaining the operation of the air conditioning system by the wall-through unit 1 on a floor of the building 2. Although the example of FIG. 10 also shows two wall-through units 1, the number is not particularly limited. In this example, the air conditioner on the interior side is stopped, and only the wall-through unit 1 is operated in the "circulation mode". Such an operation can be adopted when a small number of people are working in the living room, for example, when the air conditioning load is lighter than the operation by the air conditioning on the interior side.

<Outside air cooling operation>
FIG. 11 is a schematic diagram for explaining the outside air cooling operation of the air conditioning system on a certain floor of the building 2. Although the example of FIG. 11 also shows two wall-through units 1, the number is not particularly limited. Also in this example, the air conditioner 3 on the interior side is stopped, and only the outdoor fan 104 of the wall-through unit 1 is operated in the "outside air cooling mode". For example, when the temperature outside the room is lower than that inside the room at night in summer, such operation can be adopted. Further, when the sensor detects that the temperature outside the room is lower than that inside the room, the air conditioning system may notify the user so that the outside air cooling operation can be selected.

<Air supply operation during a disaster>
FIG. 12 is a schematic diagram for explaining the disaster air supply operation of the air conditioning system on a certain floor of the building 2. Although the example of FIG. 12 also shows two wall-through units 1, the number is not particularly limited. The air supply operation during a disaster is carried out, for example, when an earthquake of a predetermined scale or larger is detected. In the disaster air supply operation, the air conditioner 3 on the interior side is stopped, and the wall-through unit 1 operates in the “disaster air supply mode”. That is, the wall-through unit 1 does not drive the compressor 101, the outdoor fan 104, and the indoor fan 105, and opens the motor damper 113 and the motor damper 114. In this way, the wall-through unit 1 can function as a vent. For example, by making all the wall-through units 1 function as vents, it is possible to generate a natural air flow in the living room and ventilate the room.

<Effect>
The air conditions of the wall-through unit 1 according to this embodiment are as follows.
(When cooling)
Indoor suction air: 27 ° C DB, 19 ° C WB
Outdoor suction air: 27 ° C DB, 19 ° C WB
(At the time of heating)
Indoor suction air: 20 ° C DB, 15 ° C WB
Outdoor suction air: 20 ° C DB, 15 ° C WB
(At the time of heating (low temperature))
Indoor suction air: 20 ° C DB, 15 ° C WB
Outdoor suction air: 20 ° C DB, 15 ° C WB

On the other hand, the air conditions defined in JIS B8616: 2015 are as follows. (When cooling)
Indoor suction air: 27 ° C DB, 19 ° C WB
Outdoor suction air: 35 ° C DB, 24 ° C WB
(At the time of heating)
Indoor suction air: 20 ° C DB, 15 ° C WB or less Outdoor suction air: 7 ° C DB, 6 ° C WB
(At the time of heating (low temperature))
Indoor suction air: 20 ° C DB, 15 ° C WB or less Outdoor suction air: 2 ° C DB, 1 ° C WB

In particular, in the exhaust mode of the wall-through unit 1, by recovering the exhaust heat, the outdoor suction air becomes equivalent to the indoor suction air. Therefore, according to the wall-through unit according to the present embodiment, stable operation is possible without being affected by the outside air temperature. Further, since the load applied to the wall-through unit 1 is reduced, the heat exchange efficiency can be improved and the product life can be expected to be improved.

FIG. 13 is a table comparing the energy consumption efficiency of the wall-through unit 1 according to the present embodiment and the conventional wall-through unit. Further, in both the cooling operation and the heating operation, the wall-through unit according to the embodiment has improved energy consumption efficiency as compared with the conventional wall-through unit that uses outside air as the outdoor suction air. Specifically, the rated capacity is improved by 14% during the cooling operation and 22% during the heating operation. In addition, highly efficient operation can be expected even when a partial load is applied.

Further, by exhausting the air conditioning system by the wall-through unit 1, the exhaust equipment in the living room can be omitted.

Further, when an earthquake occurs, for example, by changing the state of the motor damper to the disaster air supply mode by the emergency power supply of the building 2, the building 2 can be ventilated without consuming electric power thereafter.

1 Wall-through unit 101 Compressor 102 Outdoor heat exchanger 103 Indoor heat exchanger 104 Outdoor fan 105 Indoor fan 106 First return air inlet 107 Supply air outlet 108 Second return air inlet 109 Outside air Introductory port 110 Indoor air supply port 111 Exhaust port 112 to 114 Motor damper 2 Building 21 Outdoor air supply port 22 Outdoor exhaust port 3 Air conditioner

Claims (4)

An air-conditioned heat exchanger that constitutes a refrigeration cycle and exchanges heat with the air-conditioned object, and an external heat source heat exchanger that exchanges heat with an external heat source.
An indoor blower that takes in reflux air from the room, blows it to the heat exchanger subject to air conditioning, and supplies the air after heat exchange into the room.
And the outside air introduction port, and the exhaust port,
An outdoor blower that takes in indoor air or takes in outdoor air from the outside air inlet, blows it to the external heat source heat exchanger, and exhausts the air after heat exchange to the outside from the exhaust port.
A flow path switching means for switching the flow path of air taken into the outdoor blower, and
A sensor that measures the magnitude of the outside air flowing back to the exhaust side of the outdoor blower,
With
The outside air introduction port communicates with the outdoor air supply port of the building, and the exhaust port communicates with the outdoor exhaust port provided on the same wall surface as the outdoor air supply port in the building.
When the sensor detects a wind pressure equal to or higher than a predetermined threshold value, the flow path switching means takes in outside air from the outside air introduction port into the outdoor blower and changes the flow path so as to exhaust the air from the exhaust port. Harmony machine. An outside air introduction path that communicates into the room is provided on the extension of the flow path that takes in outside air to the outdoor blower.
The outside air introduction path has an opening / closing means for opening / closing the outside air introduction path.
The wall-through type air conditioner according to claim 1, wherein the opening / closing means is opened when the supply of electric power may be stopped. An air-conditioned heat exchanger that constitutes a refrigeration cycle and exchanges heat with the air-conditioned object, and an external heat source heat exchanger that exchanges heat with an external heat source.
An indoor blower that takes in reflux air from the room, blows it to the heat exchanger subject to air conditioning, and supplies the air after heat exchange into the room.
An outdoor blower that takes in indoor air or outdoor air, blows it to the external heat source heat exchanger, and exhausts the air after heat exchange to the outside.
A flow path switching means for switching the flow path of air taken into the outdoor blower, and
On the extension of the flow path for taking in outside air to the outdoor blower, an outside air introduction path that communicates with the room and
With
The outside air introduction path has an opening / closing means for opening / closing the outside air introduction path.
A wall-through type air conditioner in which the opening / closing means is opened when the supply of electric power may be stopped. The wall-through type air conditioner according to any one of claims 1 to 3.
An air conditioner on the interior side that mainly air-conditions the interior zone of the room,
With
An air conditioning system that changes the exhaust volume of the wall-through type air conditioner in conjunction with the air supply volume of the interior air conditioner.

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