JP2024046449A - air conditioner - Google Patents

Abstract

[Problem] To provide an air conditioner capable of performing both indoor air supply ventilation and exhaust ventilation.
[Solution] In an air conditioner having an indoor unit and an outdoor unit, the outdoor unit has a housing including an air supply port, an exhaust port, and a connection port that connects to the indoor unit, and an exhaust port extending from the intake port. and a first flow path P1 that branches toward the connection port, and is arranged at a branch point of the first flow path P1, and selects the air flowing through the first flow path P1 to either the exhaust port or the connection port. a first damper device 64 that distributes the air between the air inlets and the first damper device 64, a first fan 62 disposed in the first flow path P1 between the intake port and the first damper device 64, and an exhaust ventilation flow path P3 that connects a portion of the first flow path P1 between the device 64 and a portion of the first flow path P1 between the intake port and the first fan 62; A second damper device 68 is arranged on the flow path P3 and selectively opens and closes the exhaust ventilation flow path P3.
[Selection diagram] Figure 2

Description

This disclosure relates to an air conditioner.

BACKGROUND ART Conventionally, as described in Patent Document 1, an air conditioner has been known that includes an indoor unit placed inside a room to be air-conditioned and an outdoor unit placed outdoors. This air conditioner is configured so that an indoor unit performs air supply ventilation in which outdoor air sent from an outdoor unit is supplied indoors.

Japanese Patent Application Publication No. 2003-314858

By the way, in some cases, instead of supply ventilation that supplies outdoor air into a room, exhaust ventilation that ventilates the room by discharging indoor air outdoors may be desired. For example, exhaust ventilation is desired when it is desired to quickly eliminate indoor odors.

Therefore, an object of the present disclosure is to provide an air conditioner that can perform both indoor air supply ventilation and exhaust ventilation.

In order to solve the above problems, according to one aspect of the present invention,
An air conditioner having an indoor unit and an outdoor unit,
The outdoor unit is
a housing including an intake port, an exhaust port, and a connection port connected to the indoor unit;
a first flow path extending from the intake port and branching toward the exhaust port and the connection port;
a first damper device that is disposed at a branch point of the first flow path and selectively distributes air flowing through the first flow path to either the exhaust port or the connection port;
a first fan disposed in a portion of the first flow path between the air intake port and the first damper device;
Exhaust ventilation connecting a portion of the first flow path between the connection port and the first damper device and a portion of the first flow path between the intake port and the first fan. a water flow path;
a second damper device disposed on the exhaust ventilation flow path and selectively opening and closing the exhaust ventilation flow path;
While the first fan rotates, the second damper device closes the exhaust ventilation flow path, thereby directing the outdoor air that has flowed into the first flow path through the intake port into the first damper device. supply ventilation operation in which the device distributes air to the connection port;
As the first fan rotates and the second damper device opens the exhaust ventilation flow path, indoor air flows into the first flow path via the connection port and the exhaust ventilation flow path. An air conditioner is provided in which the first damper device performs an exhaust ventilation operation in which the first damper device distributes the exhaust gas to the exhaust port.

According to the present disclosure, it is possible to provide an air conditioner that can perform both indoor supply ventilation and exhaust ventilation.

Schematic diagram of an air conditioner according to an embodiment of the present disclosure Schematic diagram of the ventilation system Schematic diagram of the ventilation system during supply ventilation operation Schematic diagram of the ventilation system during exhaust ventilation operation Schematic diagram of the ventilation system during humidification operation Schematic diagram of the ventilation system during dehumidification operation Front perspective view of the outdoor unit of the air conditioner Rear perspective view of the outdoor unit of the air conditioner Front perspective view of the ventilation system Exploded perspective view of the ventilation system with the top cover removed Top view of the ventilation system showing the internal structure Schematic cross-section of the ventilation system FIG. 2 is a top view of a portion of the ventilation device showing the second space; FIG. 11 is a perspective view showing a state of a plurality of damper devices provided in the second space during supply ventilation operation, humidification operation, or dehumidification operation; A perspective view showing the state of a plurality of damper devices provided in the second space during execution of exhaust ventilation operation. A top view showing the state of the damper device installed in the fan during suction operation in air supply ventilation operation, humidification operation, and dehumidification operation. FIG. 15B is a top view showing a state of a damper device provided in a fan during the exhaust ventilation operation and the regeneration operation in the dehumidification operation. A sectional view showing a state in which the damper of the damper device divides the second space during execution of air supply ventilation operation, humidification operation, and dehumidification operation. A perspective view of a portion of the outdoor unit with the protective cover removed.

An air conditioner according to one aspect of the present invention is an air conditioner having an indoor unit and an outdoor unit, wherein the outdoor unit has a housing including an intake port, an exhaust port, and a connection port connected to the indoor unit. , a first flow path extending from the intake port and branching toward the exhaust port and the connection port; and a first flow path disposed at a branch point of the first flow path to allow air flowing through the first flow path. a first damper device that selectively distributes the distribution to either the exhaust port or the connection port; and a first damper device disposed in a portion of the first flow path between the intake port and the first damper device. a fan, a portion of the first flow path between the connection port and the first damper device, and a portion of the first flow path between the intake port and the first fan. a second damper device disposed on the exhaust ventilation flow path and selectively opening and closing the exhaust ventilation flow path, the first fan being rotated; When the second damper device closes the exhaust ventilation flow path, the first damper device distributes outdoor air that has flowed into the first flow path via the intake port to the connection port. During the ventilation operation, the second damper device opens the exhaust ventilation flow path while the first fan rotates, thereby providing air flow to the first flow path through the connection port and the exhaust ventilation flow path. The first damper device performs an exhaust ventilation operation in which the inflowing indoor air is distributed to the exhaust port.

According to this embodiment, it is possible to provide an air conditioner that can perform both supply ventilation and exhaust ventilation in the room.

For example, the outdoor unit may further include an absorbent material disposed in a portion of the first flow path between the intake port and the first fan, through which outdoor air from the intake port passes, and a third damper device disposed in a portion of the first flow path between the absorbent material and the first fan, for selectively opening and closing the first flow path, and the exhaust ventilation flow path may be connected to a portion of the first flow path between the first fan and the third damper device. In this case, during the supply ventilation operation, the third damper device opens the first flow path, and during the exhaust ventilation operation, the third damper device closes the first flow path.

For example, the outdoor unit may further include a heater disposed in a portion of the first flow path between the intake port and the absorbent material.

For example, the outdoor unit may further include a second flow path through which outdoor air flows independent of the first flow path, and a second fan disposed on the second flow path, and the absorbent material may be disposed so that a portion of the absorbent material is located in the first flow path and another portion is located in the second flow path, and the absorbent material may rotate so that the portion located in one of the first and second flow paths moves to the other.

For example, the second damper device may include a damper disposed within the exhaust ventilation flow path and cutting off the exhaust ventilation flow path during the exhaust ventilation operation, a shaft provided in the damper, and a motor disposed outside the exhaust ventilation flow path and rotating the shaft. In this case, the shaft is provided on a surface of the damper facing the internal space of the exhaust ventilation flow path that becomes negative pressure when the damper cuts off the exhaust ventilation flow path.

For example, the first fan may be a centrifugal fan.

An embodiment of the present disclosure will be described below with reference to the drawings.

Figure 1 is a schematic diagram of an air conditioner according to one embodiment of the present disclosure.

As shown in FIG. 1, the air conditioner 10 according to this embodiment has an indoor unit 20 arranged in the room Rin to be air-conditioned, and an outdoor unit 30 arranged in the outdoor Rout.

The indoor unit 20 includes an indoor heat exchanger 22 that exchanges heat with the indoor air A1, and an indoor heat exchanger 22 that attracts the indoor air A1 into the indoor unit 20 and returns the indoor air A1 after heat exchange with the indoor heat exchanger 22 to the indoor unit. A fan 24 that blows air to Rin is provided.

The outdoor unit 30 is provided with an outdoor heat exchanger 32 that exchanges heat with the outdoor air A2, and a fan 34 that draws the outdoor air A2 into the outdoor unit 30 and blows the outdoor air A2 after heat exchange with the outdoor heat exchanger 32 out to the outdoor Rout. The outdoor unit 30 is also provided with a compressor 36, an expansion valve 38, and a four-way valve 40 that execute a refrigeration cycle with the indoor heat exchanger 22 and the outdoor heat exchanger 32.

The indoor heat exchanger 22, the outdoor heat exchanger 32, the compressor 36, the expansion valve 38, and the four-way valve 40 are each connected by refrigerant piping through which refrigerant flows. In the case of cooling operation and dehumidification operation (weak cooling operation), in the air conditioner 10, the refrigerant flows from the compressor 36 through the four-way valve 40, the outdoor heat exchanger 32, the expansion valve 38, and the indoor heat exchanger 22 in order. Run the refrigeration cycle returning to step 36. In the case of heating operation, the air conditioner 10 executes a refrigeration cycle in which refrigerant flows from the compressor 36 through the four-way valve 40, the indoor heat exchanger 22, the expansion valve 38, and the outdoor heat exchanger 32 in order and returns to the compressor 36. .

In addition to the air conditioning operation using the refrigeration cycle, the air conditioner 10 executes an air conditioning operation that supplies outdoor air A3 to indoor Rin and an air conditioning operation that discharges indoor air A1 to outdoor Rout. For this purpose, the air conditioner 10 includes a ventilation device 50. The ventilation device 50 is provided in the outdoor unit 30.

FIG. 2 is a schematic diagram of the ventilation device.

As shown in FIG. 2, the ventilation device 50 includes an absorbent material 52 through which outdoor air A3, A4 passes.

The absorbent material 52 is a member through which air can pass and which collects moisture from the air passing through it or which gives moisture to the air passing through it. In this embodiment, the absorbent material 52 is disk-shaped and rotates around a rotation center line C1 that passes through its center. The absorbent material 52 is rotationally driven by a motor 54.

The absorbent material 52 is preferably a polymer sorbent material that absorbs moisture in the air. The polymeric sorbent material is composed of, for example, a crosslinked sodium polyacrylate. Compared to adsorbents such as silica gel and zeolite, polymer sorbents absorb more water per volume, can desorb the supported water at low heating temperatures, and retain water for long periods of time. be able to.

Inside the ventilation device 50, a first flow path P1 and a second flow path P2 are provided, each passing through an absorbent material 52, and through which outdoor air A3 and A4 flow, respectively. That is, the absorbent material 52 is arranged such that a portion thereof is located within the first flow path P1 and another portion thereof is located within the second flow path P2. Further, when the absorbent material 52 is rotated by the motor 54, the portion of the absorbent material 53 located in one of the first and second flow paths P1 and P2 moves to the other. Further, inside the ventilation device 50, a third flow path P3 is provided whose both ends are connected to different parts of the first flow path P1.

The first flow path P1 is a flow path through which outdoor air A3 heading into the indoor unit 20 flows. Outdoor air A3 flowing through the first flow path P1 is supplied into the indoor unit 20 via the ventilation conduit 56.

In this embodiment, the first flow path P1 includes multiple tributary paths P1a and P1b upstream of the absorbent material 52. In this specification, the terms "upstream" and "downstream" are used with respect to the air flow.

The multiple tributary channels P1a, P2a join upstream of the absorbent material 52. Each of the multiple tributary channels P1a, P1b is provided with a heater 58, 60 that heats the outdoor air A3.

The heaters 58 and 60 may have the same heating capacity or different heating capacities. In addition, the heaters 58 and 60 are preferably PTC (Positive Temperature Coefficient) heaters, which increase electrical resistance when current flows and the temperature rises, i.e., can suppress excessive increases in heating temperature. In the case of heaters using nichrome wire or carbon fiber, the heating temperature (surface temperature) continues to rise when current continues to flow, so that temperature needs to be monitored. In the case of a PTC heater, the heater itself adjusts the heating temperature within a certain temperature range, eliminating the need to monitor the heating temperature.

The first flow path P1 is provided with a fan 62 that generates a flow of outdoor air A3 toward the indoor unit 20. In this embodiment, the fan 62 is disposed downstream of the absorbent material 52. When the fan 62 is operated, the outdoor air A3 flows from the outdoor Rout into the first flow path P1 and passes through the absorbent material 52.

The first flow path P1 is provided with a damper device 64 for distributing the outdoor air A3 flowing through the first flow path P1 to the room Rin (i.e., the indoor unit 20) or the outdoor Rout. That is, the first flow path P1 branches toward the room Rin and the outdoor Rout, and the damper device 64 is disposed at the branching point. In the present embodiment, the damper device 64 is disposed downstream of the fan 62. The outdoor air A3 distributed to the indoor unit 20 by the damper device 64 enters the indoor unit 20 via the ventilation duct 56 and is blown out to the room Rin by the fan 24.

Furthermore, in the case of this embodiment, a damper device 66 different from the damper device 64 is provided in the first flow path P1. In the case of this embodiment, the damper device 66 is arranged between the absorbent material 52 and the fan 62. Although details will be described later, the damper device 66 is provided for exhaust ventilation and selectively opens and closes the first flow path P1.

Furthermore, a third flow path P3 is connected to the first flow path P1. The third flow path P3 is a flow path for exhaust ventilation, which will be described in detail later, and connects the part of the first flow path P1 between the fan 62 and the damper device 66 with the part of the first flow path P1 downstream of the damper device 64. A damper device 68 is provided in the third flow path P3. The damper device 68 is provided for exhaust ventilation, which will be described in detail later, and selectively opens and closes the third flow path P3.

The second flow path P2 is a flow path through which outdoor air A4 flows. Unlike the outdoor air A3 flowing through the first flow path P1, the outdoor air A4 flowing through the second flow path P2 does not head toward the indoor unit 20. That is, the second flow path P2 is a flow path independent from the first flow path P1. The outdoor air A4 flowing through the second flow path P2 passes through the absorbent material 52 and then flows out to the outdoor Rout.

A fan 70 that generates a flow of outdoor air A4 is provided in the second flow path P2. In the case of this embodiment, fan 70 is arranged downstream with respect to absorbent material 52. When the fan 70 operates, outdoor air A4 flows from the outdoor Rout into the second flow path P2, passes through the absorbent material 52, and then flows out to the outdoor Rout.

The ventilation device 50 selectively performs ventilation operation, humidification operation, and dehumidification operation by selectively using the absorbent material 52 (motor 54), heaters 58, 60, fan 62, damper devices 64, 66, 68, and fan 70. Note that the ventilation operation includes supply ventilation operation and exhaust ventilation operation.

FIG. 3 is a schematic diagram of the ventilator during supply air ventilation operation.

The air supply ventilation operation is an air conditioning operation that supplies outdoor air A3 to the indoor Rin (that is, the indoor unit 20). As shown in FIG. 3, motor 54 continues to rotate absorbent material 52 during supply air ventilation operation. The heaters 58 and 60 are in the OFF state and are not heating the outdoor air A3. The fan 62 is in the ON state, so that the outdoor air A3 is flowing through the first flow path P1. The damper device 64 distributes the outdoor air A3 in the first flow path P1 to the indoor unit 20. The damper device 66 is in an open state, whereby outdoor air A3 flows from the absorbent material 52 toward the fan 62. The damper device 68 is in a closed state, so that the outdoor air A3 does not flow through the third flow path P3. The fan 70 is in an OFF state, so that no flow of outdoor air A4 occurs in the second flow path P2.

According to this supply ventilation operation, the outdoor air A3 flows into the first flow path P1 and passes through the absorbent 52 without being heated by the heaters 58, 60. The outdoor air A3 that has passed through the absorbent 52 is distributed to the indoor unit 20 by the damper device 64. The outdoor air A3 that has passed through the damper device 64 and reached the indoor unit 20 via the ventilation duct 56 is blown out into the room Rin by the fan 24. According to this supply ventilation operation, the outdoor air A3 is supplied as is to the room Rin, and the room Rin is supply ventilated.

FIG. 4 is a schematic diagram of the ventilator during exhaust ventilation operation.

The exhaust ventilation operation is an air conditioning operation that exhausts indoor air A1 to the outdoor Rout. As shown in FIG. 4, during the exhaust ventilation operation, the motor 54 is in an OFF state and the absorbent material 52 is not rotating. Heaters 58 and 60 are in an OFF state. Fan 62 is ON, thereby causing indoor air A1 to flow through ventilation conduit 56 and third flow path P3 toward fan 62. The damper device 64 distributes the indoor air A1 in the first flow path P1 to the outdoor Rout. The damper device 66 is in a closed state, so that room air A1 does not flow toward the absorbent material 52. The damper device 68 is in an open state, whereby room air A1 flows towards the fan 62 via the third flow path P3. The fan 70 is in an OFF state, so that no flow of outdoor air A4 occurs in the second flow path P2.

According to such exhaust ventilation operation, when the fan 62 is in the ON state, the indoor air A1 flows through the ventilation conduit 56 and the third flow path P3 to the first air flow between the absorbent material 52 and the fan 62. It flows into the flow path P1. At this time, since the damper device 66 is in a closed state, the indoor air A1 does not flow toward the absorbent material 52. The indoor air A1 that has passed through the fan 62 is distributed to the outdoor Rout by the damper device 64, and is discharged to the outdoor Rout. As a result, the indoor Rin is exhausted and ventilated.

Note that the third flow path P3 allows the fan 62 to rotate in the same rotational direction during the exhaust ventilation operation as during the supply air ventilation operation. As a result, a sirocco fan can be used as the fan 62.

FIG. 5 is a schematic diagram of the ventilation device during humidification operation.

The humidification operation is an air conditioning operation that humidifies the outdoor air A3 and supplies the humidified outdoor air A3 to the indoor Rin (that is, the indoor unit 20). As shown in FIG. 5, the motor 54 continues to rotate the absorbent material 52 during humidification operation. The heaters 58 and 60 are in the ON state and heat the outdoor air A3. The fan 62 is in the ON state, so that the outdoor air A3 is flowing through the first flow path P1. The damper device 64 distributes the outdoor air A3 in the first flow path P1 to the indoor unit 20. The damper device 66 is in an open state, whereby outdoor air A3 flows from the absorbent material 52 toward the fan 62. The damper device 68 is in a closed state, so that the outdoor air A3 does not flow through the third flow path P3. The fan 70 is in an ON state, so that the outdoor air A4 is flowing through the second flow path P2.

According to this humidification operation, the outdoor air A3 flows into the first flow path P1, is heated by the heaters 58, 60, and passes through the absorbent 52. At this time, the heated outdoor air A3 can remove a larger amount of moisture from the absorbent 52 than when it is not heated. As a result, the outdoor air A3 carries a large amount of moisture. The outdoor air A3 that passes through the absorbent 52 and carries a large amount of moisture is distributed to the indoor unit 20 by the damper device 64. The outdoor air A3 that passes through the damper device 64 and reaches the indoor unit 20 via the ventilation duct 56 is blown out by the fan 24 into the room Rin. According to this humidification operation, the outdoor air A3 that carries a large amount of moisture is supplied to the room Rin, and the room Rin is humidified.

Note that a weak humidification operation may be performed in which the amount of moisture taken by the outdoor air A3 from the absorbent material 52 is reduced by turning off one of the heaters 58 and 60, that is, a weak humidification operation in which the amount of humidification of the indoor Rin is small.

As moisture is removed by the heated outdoor air A3, the amount of water retained in the absorbent material 52 decreases, that is, the absorbent material 52 dries. When the absorbent material 52 dries, the outdoor air A3 flowing through the first flow path P1 cannot remove moisture from the absorbent material 52. To deal with this, the absorbent material 52 removes moisture from the outdoor air A4 flowing through the second flow path P2. Thereby, the water retention amount of the absorbent material 52 is maintained substantially constant, and humidification operation can be continued.

FIG. 6 is a schematic diagram of the ventilation device during dehumidification operation.

The dehumidification operation is an air conditioning operation that dehumidifies the outdoor air A3 and supplies the dehumidified outdoor air A3 to the room Rin (i.e., the indoor unit 20). As shown in FIG. 6, in the dehumidification operation, the adsorption operation and the regeneration operation are performed alternately.

The adsorption operation is an operation in which moisture carried in the outdoor air A3 is adsorbed onto the absorbent material 52, thereby dehumidifying the outdoor air A3. As shown in FIG. 6, the motor 54 continues to rotate the absorbent material 52 during the suction operation. The heaters 58 and 60 are in the OFF state and are not heating the outdoor air A3. The fan 62 is in the ON state, so that the outdoor air A3 is flowing through the first flow path P1. The damper device 64 distributes the outdoor air A3 in the first flow path P1 to the indoor unit 20. The damper device 66 is in an open state, whereby outdoor air A3 flows from the absorbent material 52 toward the fan 62. The damper device 68 is in a closed state, so that the outdoor air A3 does not flow through the third flow path P3. The fan 70 is in an OFF state, so that no flow of outdoor air A4 occurs in the second flow path P2.

According to such adsorption operation, the outdoor air A3 flows into the first flow path P1 and passes through the absorbent material 52 without being heated by the heaters 58 and 60. At this time, the moisture carried by the outdoor air A3 is adsorbed by the absorbent material 52. As a result, the amount of moisture carried in the outdoor air A3 is reduced, that is, the outdoor air A3 is dried. Outdoor air A3 that has passed through the absorbent material 52 and dried is distributed to the indoor unit 20 by a damper device 64. Outdoor air A3 that has passed through the damper device 64 and reached the indoor unit 20 via the ventilation conduit 56 is blown out by the fan 24 to the indoor Rin. Through such adsorption operation, the dry outdoor air A3 is supplied to the indoor Rin, and the indoor Rin is dehumidified.

As the adsorption operation continues, the amount of water held by the absorbent 52 continues to increase, and as a result, the adsorption capacity of the absorbent 52 for the moisture held in the outdoor air A3 decreases. In order to recover the adsorption capacity, a regeneration operation is performed to regenerate the absorbent 52.

During regeneration operation, the motor 54 continues to rotate the absorbent 52. The heaters 58 and 60 are ON and heat the outdoor air A3. The fan 62 is ON and causes the outdoor air A3 to flow through the first flow path P1. The damper device 64 distributes the outdoor air A3 in the first flow path P1 to the outdoor Rout instead of the indoor unit 20. The damper device 66 is open and causes the outdoor air A3 to flow from the absorbent 52 toward the fan 62. The damper device 68 is closed and causes the outdoor air A3 not to flow through the third flow path P3. The fan 70 is OFF and causes no flow of the outdoor air A4 to occur in the second flow path P2.

According to such regeneration operation, the outdoor air A3 flows into the first flow path P1, is heated by the heaters 58 and 60, and passes through the absorbent material 52. At this time, the heated outdoor air A3 removes a large amount of moisture from the absorbent material 52. As a result, a large amount of moisture is carried in the outdoor air A3. At the same time, the water retention amount of the absorbent material 52 decreases, that is, the absorbent material 52 dries and its adsorption capacity is regenerated. The outdoor air A3 that has passed through the absorbent material 52 and carries a large amount of moisture is distributed to the outdoor Rout by the damper device 64 and is discharged to the outdoor Rout. Thereby, during the regeneration operation in the dehumidification operation, the outdoor air A3 carrying a large amount of moisture due to the regeneration of the absorbent material 52 is not supplied to the indoor Rin.

By alternating between adsorption and regeneration operations in this manner, the adsorption capacity of the absorbent 52 is maintained, and dehumidification operation can be performed continuously.

The air conditioning operation (cooling operation, dehumidification operation (weak cooling operation), heating operation) by the above-mentioned refrigeration cycle and the air conditioning operation (ventilation operation (supply air ventilation operation, exhaust ventilation operation), humidification operation, dehumidification operation) by the ventilation device 50 are , can be executed separately or simultaneously. For example, if the dehumidifying operation using the refrigeration cycle and the dehumidifying operation using the ventilation device 50 are performed simultaneously, it is possible to dehumidify the room Rin while keeping the room temperature constant.

The air conditioning operation performed by the air conditioner 10 is selected by the user. For example, when the user performs a selection operation on the remote controller 72 shown in FIG. 1, the air conditioner 10 performs the air conditioning operation corresponding to that operation.

Up to this point, we have given an overview of the configuration and operation of the air conditioner 10 according to this embodiment. From here on, we will explain the details of the configuration of the air conditioner 10 according to this embodiment.

Figure 7 is a front perspective view of the outdoor unit of the air conditioner. Also, Figure 8 is a rear perspective view of the outdoor unit of the air conditioner. Furthermore, Figure 9 is a front perspective view of the ventilation device. Furthermore, Figure 10 is an exploded perspective view of the ventilation device with the top cover removed. In addition, Figure 11 is a top view of the ventilation device showing the internal structure. And Figure 12 is a schematic cross-sectional view of the ventilation device. Note that the X-Y-Z orthogonal coordinate system shown in the drawings is for facilitating understanding of the embodiment, and does not limit the embodiment. The X-axis direction indicates the front-rear direction of the outdoor unit 30, the Y-axis direction indicates the left-right direction, and the Z-axis direction indicates the height direction. Also, in Figure 11, the top cover, inner cover, and heater cover are omitted. And Figure 12 shows a state in which the adsorption operation is being performed in the supply ventilation operation shown in Figure 3, the humidification operation shown in Figure 5, and the dehumidification operation shown in Figure 6.

As shown in Figures 7 and 8, in this embodiment, the ventilation device 50 constitutes the upper part of the outdoor unit 30. Specifically, the ventilation device 50 is provided on the housing 100 of the main body of the outdoor unit 30, which houses the outdoor heat exchanger 32, the fan 34, the compressor 36, the expansion valve 38, and the four-way valve 40.

As shown in Figures 9 to 11, the ventilation device 50 is a generally rectangular parallelepiped shape that is elongated in the left-right direction (Y-axis direction) of the outdoor unit 30, and includes a box-shaped housing 102 that is open at the top, and a top cover 104 that is attached to the top of the housing 102 to cover it. Components of the ventilation device 50, such as the absorbent material 52, are stored inside the housing 102.

As shown in Figures 10 to 12, in this embodiment, the absorbent material 52 is disposed in the center of the ventilation device 50 in the left-right direction (Y-axis direction). The components related to the first flow path P1 are disposed on one longitudinal side (right side) of the absorbent material 52, and the components related to the second flow path P2 are disposed on the other longitudinal side (left side).

Furthermore, as shown in FIG. 12, multiple spaces S1 to S4 are essentially formed within the housing 102 of the ventilation device 50.

The first space S1 is a part of the first flow path P1, and is a space into which the outdoor air A3 first flows. Further, the first space S1 is substantially formed in the right side and upper part of the housing 102.

The second space S2 is a part of the first flow path P1, and is a space into which the outdoor air A3 in the first space S1 flows through the absorbent material 52. Further, the second space S2 is substantially formed in the right side and lower part of the housing 102.

The third space S3 is a part of the second flow path P2, and is a space into which the outdoor air A4 first flows. Further, the third space S3 is substantially formed in the left side and lower portion of the housing 102.

The fourth space S4 is a part of the second flow path P2, and is a space into which the outdoor air A4 in the third space S3 passes through the absorbent material 52 and flows into the fourth space S4. Further, the fourth space S4 is substantially formed in the left side and upper part of the housing 102.

The third and fourth spaces S3, S4 are independent of the first and second spaces S1, S2 (i.e., they are sealed) so that the outdoor air A3 inside the first and second spaces S1, S2 does not move into the third and fourth spaces S3, S4, and conversely, the outdoor air A4 inside the third and fourth spaces S3, S4 does not move into the first and second spaces S1, S2.

First, we will explain the components of the ventilation device 50 related to the second flow path P2, which has a simple configuration.

In the case of this embodiment, as shown in FIGS. 10 and 11, in connection with the second flow path P2 through which the outdoor air A4 flows, the housing 102 of the ventilation device 50 includes an intake port 102a, an intake port 102b, and an exhaust port 102c. That is, the second flow path P2 communicates the intake ports 102a, 102b and the exhaust port 102c. The intake port 102a is formed at the center of the front wall 102d of the housing 102 in the left-right direction (Y-axis direction). Further, the intake port 102b is formed at the center of the rear wall 102e of the housing 102 in the left-right direction. The exhaust port 102c is formed on the left side of the front wall 102d.

When the fan 70 is operated, the outside air A4 flows into the third space S3 in the housing 102 through the intake port 102a and the intake port 102b. Specifically, as shown in FIG. 12, the outside air A4 flows into the third space S3 between the bottom plate 102f of the housing 102 and the lower end surface 52a of the absorbent material 52.

The outdoor air A4 in the third space S3 flows into the absorbent 52 through the lower end surface 52a and flows out of the absorbent 52 through the upper end surface 52b into the fourth space S4. The fourth space S4 is defined by a partition plate 106 that separates the third space S3 from the fourth space S4, and an inner cover 108 that covers the partition plate 106.

Outdoor air A4 that has passed through the absorbent material 52 and flowed into the fourth space S4 is sucked into the fan 70. In the case of the present embodiment, the fan 70 is a sirocco fan, and includes an impeller 70a that is housed in a fan chamber F1 and rotates about a rotation center line that extends in the height direction (Z-axis direction). It includes a motor 70b that rotates an impeller 70a. The motor 70b is arranged below the impeller 70a.

The fan chamber F1 of the fan 70 is defined by the bottom plate 102f of the housing 102, the scroll wall 102g that stands from the bottom plate 102f toward the partition plate 106 so as to surround the impeller 70a of the fan 70 and directs the air that has passed through the impeller 70a toward the exhaust port 102c, and the partition plate 106. That is, these components that define the fan chamber F1 constitute the fan casing 70c of the fan 70, which is a sirocco fan. The fan chamber F1 also communicates with the fourth space S4 through a through hole 106a formed in the partition plate 106. That is, the through hole 106a is the air intake port of the fan 70, which is a sirocco fan, and the exhaust port 102c is the air outlet port.

By the rotation of the impeller 70a, the outdoor air A4 in the fourth space S4 is sucked into the fan chamber F1 through the through hole (air intake port) 106a of the partition plate 106, and is discharged to the outside Rout through the exhaust port (air outlet port) 102c that communicates with the fan chamber F1.

The motor 70b of the fan 70 is housed in a recess formed in the bottom surface of the fan chamber F1, i.e., in a recess 102h formed in the bottom plate 102f of the housing 102. The recess 102h is covered by a motor cover 110.

Next, the components of the ventilation device 50 related to the first flow path P1 will be explained.

In the case of this embodiment, as shown in FIGS. 10 and 11, in relation to the first flow path P1 through which outdoor air A3 flows, the housing 102 of the ventilation device 50 includes an intake port 102i, an exhaust port 102j, and a connection port 102m connected to the ventilation conduit 56. That is, the first flow path P1 extends from the intake port 102i and branches toward the exhaust port 102j and the connection port 102m. The intake port 102i is formed on the right side of the rear wall 102e of the housing 102. The exhaust port 102j is provided on the right side wall 102k of the housing 102. Further, the connection port 102m is formed on the right side wall 102k so as to be located on the rear side with respect to the exhaust port 102j.

When the fan 62 operates, the outdoor air A3 flows into the first space S1 in the housing 102, which is a part of the first flow path P1, through the intake port 102i. The outdoor air A3 that has flowed into the first space S1 passes through the heaters 58 and 60 and heads above the upper end surface 52b of the absorbent material 52.

Specifically, heaters 58 and 60 are supported by heater base member 112. The heater base member 112 includes a heater placement portion 112a on which the heaters 58 and 60 are placed, and a cylindrical absorbent storage portion 112b that rotatably stores the absorbent material 52.

As shown in FIG. 11, the heaters 58 and 60 are arranged in a V-shape on the heater mounting portion 112a of the heater base member 112. The outside air A3 that has passed through each of the heaters 58 and 60 (i.e., the outside air A3 that has flowed through the tributary channels P1a and P2b) joins together on the upper end surface 52b of the absorbent 52 housed in the absorbent housing portion 112b of the heater base member 112. The heaters 58 and 60 are fin heaters equipped with multiple heating fins that transfer heat to the outside air A3 flowing through the tributary channels P1a and P2a.

In the case of this embodiment, the disk-shaped absorbent material 52 is supported by a cylindrical absorbent material holder 114. The absorbent material holder 114 is rotatably supported by the housing 102 around a rotation center line C1 extending in the height direction (Z-axis direction). External teeth 114a that engage with a pinion gear 116 attached to the motor 54 are formed on the outer peripheral surface of the absorbent holder 114. The motor 54 rotates the absorbent material 52 via the absorbent material holder 114.

In this embodiment, the heaters 58, 60 and a portion of the upper end surface 52b of the absorbent 52 are covered by a heater cover 118 shown in FIG. 10. As a result, all of the outside air A3 that has passed through the heaters 58, 60 passes through the portion of the upper end surface 52b of the absorbent 52 that is covered by the heater cover 118. Note that the outside air A3 passes through the gap between the heater mounting portion 112a of the heater base member 112 and the heater cover 118, as shown in FIG. 13, and then passes through the heaters 58, 60.

As shown in FIG. 13, the outdoor air A3 heated by the heaters 58 and 60 passes through the absorbent material 52 downward from the upper end surface 52b toward the lower end surface 52a, and passes through a part of the first flow path P1. enters the second space S2.

FIG. 13 is a top view of a portion of the ventilator showing the second space. Note that FIG. 13 shows the state during execution of the suction operation in the air supply ventilation operation shown in FIG. 3, the humidification operation shown in FIG. 5, and the dehumidification operation shown in FIG.

As shown in FIG. 13, the bottom plate 102f of the housing 102 is provided with a guide wall 102n extending in the height direction (Z-axis direction). As shown in FIG. 12, a partition plate 120 is arranged at the top of the guide wall 102n to separate the first space S1 and the second space S2. That is, the second space S2 is defined by the bottom plate 102f of the housing 102, the guide wall 102n, and the partition plate 120. Note that a seal member 122 is provided on a portion of the guide wall 102n located below the absorbent material 52 to seal between the lower end surface 52a of the absorbent material 52 and the guide wall 102n. This seal member 122 restricts the movement of air from the second space S2 to the third space S3 or in the opposite direction.

The second space S2, which is a part of the first flow path P1, communicates with the connection port 102m to which the ventilation conduit 56 is connected. Further, damper devices 66 and 68 are provided in the second space S2.

The damper devices 66 and 68 include dampers 66a and 68a that are arranged in the second space S2 and divide the second space S2, shafts 66b and 68b provided in the dampers 66a and 68a, and a shaft that divides the second space S2. The motors 66c and 68c are disposed outside the motor and rotate shafts 66b and 68b. In the case of this embodiment, each of the dampers 66a and 68a is provided in the housing 102 so as to be rotatable about a rotation center line extending in a direction perpendicular to the height direction (Z-axis direction). . Further, the motors 66c and 68c are housed and protected in motor boxes 66d and 68d provided outside the second space S2.

The dampers 66a and 68a of the damper devices 66 and 68 divide the second space S2 into three regions: an area S2a on the absorbent 52 side, a central area S2b, and an area S2c on the connection port 102m side. The area S2c corresponds to a portion of the third flow path P3 shown in Figures 2 to 6.

When the damper device 66 is open, i.e. when the damper 66a does not separate the second space S2, air can move between the regions S2a and S2b. On the other hand, when the damper device 66 is closed, i.e. when the damper 66a separates the second space S2 between the regions S2a and S2b, air movement between the regions S2a and S2b is restricted.

When the damper device 68 is open, i.e. when the damper 68a does not separate the second space S2, air can move between the regions S2b and S2c. On the other hand, when the damper device 68 is closed, i.e. when the damper 68a separates the second space S2 between the regions S2b and S2c, air movement between the regions S2b and S2c is restricted.

The central area S2b communicates with the fan chamber F2 of the fan 62. Specifically, as shown in FIGS. 10 and 12, the fan 62 is a sirocco fan in this embodiment, and is housed in the fan chamber F2 and extends in the height direction (Z-axis direction). The impeller 62a rotates around a rotational center line, and the motor 62b rotates the impeller 62a.

The fan chamber F2 of the fan 62 is defined by the partition plate 120, the scroll wall 120a that stands upward from the partition plate 106 to surround the impeller 62a and directs the air that has passed through the impeller 62a to the connection port 102m, and the fan cover 124 that is placed on the top of the scroll wall 120a and covers the impeller 62a. That is, these components that define the fan chamber F2 constitute the fan casing 62c of the fan 62, which is a sirocco fan. The fan chamber F2 is also connected to the central region S2b of the second space S2 through the through hole 120b formed in the partition plate 120. That is, the through hole 106a is the air intake port of the fan 62, which is a sirocco fan, and the connection port 102m is the air outlet port. The motor 62b is placed on the fan cover 124 and is protected by a motor cover 126 that covers the motor 62b.

Outdoor air A3 or indoor air A1 enters the fan chamber F2. Specifically, when the air conditioner 10 is performing the air supply ventilation operation shown in FIG. 3, the humidification operation shown in FIG. 5, or the dehumidification operation shown in FIG. 6, the outdoor air A3 enters. When the air conditioner 10 is performing the exhaust ventilation operation shown in FIG. 4, indoor air A1 enters.

FIG. 14A is a perspective view showing the state of a plurality of damper devices provided in the second space during execution of air supply ventilation operation, humidification operation, or dehumidification operation. Further, FIG. 14B is a perspective view showing the state of the plurality of damper devices provided in the second space during execution of the exhaust ventilation operation. Note that FIGS. 14A and 14B are perspective views viewed diagonally from above and from the front.

As shown in FIG. 14A, during supply ventilation operation, humidification operation, or dehumidification operation, the outdoor air A3 flowing out from the lower end surface 52a of the absorbent 52 flows through the region S2a of the second space S2 and passes through the damper 66a of the damper device 66 in the open state. The outdoor air A3 that passes through the damper 66a and flows into the region S2b is sucked into the fan chamber F2 through the through hole (air intake port) 120b located above the region S2b by the rotation of the impeller 62a of the fan 62. At this time, the damper 68a of the damper device 68 is in the closed state, so the outdoor air A3 in the region S2b cannot enter the region S2c.

As shown in FIG. 14B, during the exhaust ventilation operation, the rotation of the impeller 62a of the fan 62 causes indoor air A1 to flow into the region S2c of the second space S2 through the ventilation conduit 56 and the connection port 102m. . The indoor air A1 that has flowed into the region S2c passes through the damper 68a of the damper device 68 in the open state and flows into the region S2b. The indoor air A1 that has flowed into the region S2b is sucked into the fan chamber F2 by the rotation of the impeller 62a of the fan 62 through the through hole (air suction port) 120b located above the region S2b. At this time, since the damper 66a of the damper device 66 is in a closed state, the outdoor air A2 in the region S2b cannot enter the region S2a.

The fan 62 is made smaller by the damper device 66 that divides the second space S2 between the areas S2a and S2b during exhaust ventilation operation. If the damper device 66 did not exist, the fan 62 would draw in the indoor air A1 through the ventilation duct 56 and the connection port 102m while drawing in the outdoor air A3 through the intake port 102i and the absorbent material 52 during exhaust ventilation operation. In this case, in order to obtain sufficient exhaust ventilation capacity, it is necessary to increase the size of the fan 62 and increase the suction capacity.

The outdoor air A3 or room air A1 sucked into the fan chamber F2 of the fan 62 is distributed by the damper device 64 to the connection port 102m (i.e., the indoor unit 20) or the exhaust port 102j (i.e., the outdoor Rout). Specifically, when the air conditioner 10 is performing the supply ventilation operation shown in FIG. 3, the humidification operation shown in FIG. 5, or the adsorption operation in the dehumidification operation shown in FIG. 6, the outdoor air A3 is distributed to the connection port 102m. When the air conditioner 10 is performing the exhaust ventilation operation shown in FIG. 4, the room air A1 is distributed to the exhaust port 102j. And when the air conditioner 10 is performing the regeneration operation in the dehumidification operation shown in FIG. 6, the outdoor air A3 is distributed to the exhaust port 102j.

Figure 15A is a top view showing the state of the damper device provided on the fan during the supply ventilation operation, the humidification operation, and the adsorption operation in the dehumidification operation. Also, Figure 15B is a top view showing the state of the damper device provided on the fan during the exhaust ventilation operation and the regeneration operation in the dehumidification operation.

As shown in FIGS. 15A and 15B, the damper device 64 includes a damper 64a that rotates around a rotation center line C2 extending in the height direction (Z-axis direction), and a motor 64b that rotates the damper 64a. (See FIG. 11). The motor 64b is provided on the fan cover 124, as shown in FIG. 11.

As shown in FIGS. 15A and 15B, in the case of this embodiment, the fan 62 includes a linear duct portion 62d that communicates the fan chamber F2 and the connection port 102m. In the case of the present embodiment, the duct portion 62d includes a partition plate 120, a guide wall 120c extending in the height direction (Z-axis direction) from the partition plate 120 toward the fan cover 124, and the fan cover 124. ing. Note that the internal flow path of the duct portion 62d is included in the first flow path P1. The damper 64a of the damper device 64 rotates within the duct portion 62d.

In this embodiment, the duct section 62d extends linearly in the tangential direction DT of the impeller 62a of the fan 62 toward the connection port 102m. The tangential direction here refers to the tangential direction of a circle centered on the rotation center line of the impeller 62a. This allows the outdoor air A3 flowing from the fan chamber F2 toward the connection port 102m to pass through the connection port 102m and flow into the ventilation duct 56 without pressure loss or generating large noise.

Further, an outflow port 120e communicating with the exhaust port 102j is formed in a guide wall 120c that is a part of the duct portion 62d and extends from the tongue portion 120d of the scroll wall 120a toward the connection port 102m.

As shown in FIG. 15A, during the supply ventilation operation, humidification operation, and adsorption operation in the dehumidification operation, the damper 64a of the damper device 64 blocks the outlet 120e. This causes the outdoor air A3 in the fan chamber F2 to flow through the duct portion 62d toward the connection port 102m. In other words, the damper 64a functions as part of the guide wall 120c that extends from the tongue portion 120d to the connection port 102m. Therefore, the outlet 120e exists between the tongue portion 120d and the rotation center line C2 of the damper 64a.

On the other hand, as shown in FIG. 15B, during the exhaust ventilation operation and the regeneration operation in the dehumidification operation, the damper 64a of the damper device 64 intersects non-perpendicularly to the extending direction (i.e., tangential direction DT) of the duct portion 62d. Then, the internal flow path of the duct portion 62d is closed in a state facing the outlet 120e. As a result, the indoor air A1 (during exhaust ventilation operation) and the outdoor air A3 (during regeneration operation) in the fan room F2 flow along the damper 64a, pass through the outlet 120e, and then flow toward the exhaust port 102j. . That is, the damper 64a functions as a guide plate that guides air to the outlet 120e. As a result, compared to the case where the damper 64a closes the internal flow path of the duct portion 62d in a state perpendicular to the extending direction of the duct portion 62d, the generation of pressure loss and turbulence is suppressed, and the resulting large noise is suppressed. Occurrence is suppressed.

In addition, during exhaust ventilation operation, i.e., when the damper device 68 is open, as shown in FIG. 15B, the damper 64a of the damper device 64 closes the internal flow path of the duct portion 62d and the impeller 62a of the fan 62 rotates, causing indoor air A1 to flow into the fan chamber F2 of the fan 62 through the ventilation duct 56 and the second space S2 (see FIG. 14B).

As for the damper device 68, during the supply ventilation operation, humidification operation, and dehumidification operation, the damper 68a of the damper device 68 divides the second space S2 between the area S2b and the area S2c, as described above. At this time, the area S2b becomes negative pressure, and the area S2c becomes positive pressure.

Figure 16 is a cross-sectional view showing the state in which the damper of the damper device divides the second space during supply ventilation operation, humidification operation, and dehumidification operation.

As shown in FIG. 16, during the supply ventilation operation, humidification operation, and dehumidification operation, the damper 68a of the damper device 68 divides the second space S2 between the area S2b and the area S2c. The area S2b is under negative pressure (i.e., a pressure lower than the atmospheric pressure) because the outdoor air A3 inside the area S2b is sucked in by the fan 62 located above the area S2b. On the other hand, the area S2c is under positive pressure (i.e., a pressure higher than the atmospheric pressure) because the area S2c is connected to the ventilation duct 56 through which the outdoor air A3 blown out from the fan 62 flows. For this reason, the shaft 68b for rotating the damper 68a is provided on the surface 68e of the damper 68a facing the area S2b that is under negative pressure. As a result, the shaft 68b passes through a through hole 102p formed in a portion of the guide wall 102n that defines the area S2b in order to connect to the motor 68c located outside the second space S2. Around the motor 68c (in this embodiment, the inside of the motor box 68d is at atmospheric pressure, so foreign matter does not move from the negative pressure area S2b to the periphery of the motor 68c, which is at atmospheric pressure, through the through hole 102p. As a result, the motor 68c is protected from foreign matter.

In the case of this embodiment, outdoor air A3 or indoor air A1 discharged from exhaust port 102j flows into protective cover 128 shown in FIGS. 7 and 8.

FIG. 17 is a perspective view of a portion of the outdoor unit with the protective cover removed.

As shown in FIG. 17 and as shown in FIGS. 1 and 2, protective cover 128 is a cover that covers and protects ventilation conduit 56. As shown in FIG. The ventilation conduit 56 extends downward from the connection port 102m of the ventilation device 50, and then extends diagonally upward and backward toward the indoor unit 20. The protective cover 128 covers and protects the portion of the ventilation conduit 56 that extends downward from the connection port 102m. To this end, the protective cover 128 is provided at its lower part with an opening 128a which opens towards the rear and through which the ventilation conduit 56 passes, as shown in FIG. Note that in this embodiment, the opening 128a has a cutout shape. In the case of this embodiment, the protective cover 128 also covers and protects the connector 130 to which the refrigerant pipe is connected.

The protective cover 128 is attached to the right side wall 102k of the housing 102 and the right side wall 100a of the housing 100 of the main body of the outdoor unit 30 because the ventilation duct 56 is connected to the connection port 102m formed in the right side wall 102k of the housing 102 of the ventilation device 50. As a result, the exhaust port 102j of the ventilation device 50 is covered by the protective cover 128 and communicates with its internal space.

The protective cover 128 that covers the exhaust port 102j functions as a "muffler" that reduces the level of noise that originates from the exhaust port 102j and leaks outside the ventilation device 50. For example, the protective cover 128 reduces the noise generated by the fan 62 and leaks from the ventilation device 50 through the exhaust port 102j. Or, for example, the protective cover 128 reduces the noise level of wind noise generated when the indoor air A1 or the outdoor air A3 passes through the exhaust port 102j during exhaust ventilation operation or regeneration operation in dehumidification operation.

In addition, in the case of this embodiment, the exhaust port 102j is provided at the top of the outdoor unit 30 (strictly speaking, the ventilation device 50 placed on the housing 100 of the main body of the outdoor unit 30). The opening 128a of the protective cover 128 that covers the exhaust port 102j is provided at the bottom. Therefore, the exhaust port 102j and the opening 128a are as far apart as possible in the height direction (Z-axis direction) of the outdoor unit 30. As a result, the level of noise originating from the exhaust port 102j and leaking outside the ventilation device 50 is further reduced.

According to this embodiment as described above, it is possible to provide an air conditioner that can perform both indoor air supply ventilation and exhaust ventilation.

The present invention has been described above using the above-mentioned embodiments, but the present disclosure is not limited to the above-mentioned embodiments.

For example, in the above-described embodiment, as shown in Figures 3 to 6, when one of the damper devices 66, 68 is open, the other is closed. However, the embodiment of the present disclosure is not limited to this. In some cases, both of the damper devices 66, 68 may be open or closed.

In addition, in the above-described embodiment, the air conditioner can perform a humidification operation in which humidified outdoor air is supplied to the room, and a dehumidification operation in which dehumidified outdoor air is supplied to the room. However, the embodiment of the present disclosure is not limited to this. For example, the embodiment of the present disclosure may be an air conditioner in which the ventilation device only performs an intake ventilation operation in which outdoor air is supplied directly to the room, and an exhaust ventilation operation in which indoor air is exhausted to the outside. In this case, the absorbent material 52 and the heaters 58 and 60 can be omitted.

That is, in a broad sense, the air conditioner according to the embodiment of the present disclosure is an air conditioner having an indoor unit and an outdoor unit, and the outdoor unit has an air intake port, an exhaust port, and an air conditioner connected to the indoor unit. a casing including a connection port to be connected; a first flow path extending from the intake port and branching toward the exhaust port and the connection port; a first damper device that selectively distributes air flowing through one flow path to either the exhaust port or the connection port; and the first flow path between the intake port and the first damper device. a first fan disposed in a portion of the first flow path between the connection port and the first damper device and a portion of the first flow path between the intake port and the first fan; a second damper device disposed on the exhaust ventilation flow path and selectively opening and closing the exhaust ventilation flow path; While the first fan is rotating, the second damper device closes the exhaust ventilation flow path, so that the outdoor air that has flowed into the first flow path through the intake port is transferred to the first damper device. air is distributed to the connection port, and the second damper device opens the exhaust ventilation flow path while the first fan rotates, so that air is distributed to the connection port and the exhaust ventilation flow path. and performs an exhaust ventilation operation in which the first damper device distributes the indoor air that has flowed into the first flow path to the exhaust port.

The present disclosure is applicable to any air conditioner that has an indoor unit and an outdoor unit.

62 First Fan (Fan)
64 First damper device (damper device)
68 Second damper device (damper device)
P1: First flow path P3: Exhaust ventilation flow path (third flow path)

Claims (6)

An air conditioner having an indoor unit and an outdoor unit,
The outdoor unit is
a housing including an intake port, an exhaust port, and a connection port connected to the indoor unit;
a first flow path extending from the intake port and branching toward the exhaust port and the connection port;
a first damper device that is disposed at a branch point of the first flow path and selectively distributes air flowing through the first flow path to either the exhaust port or the connection port;
a first fan disposed in a portion of the first flow path between the air intake port and the first damper device;
Exhaust ventilation connecting a portion of the first flow path between the connection port and the first damper device and a portion of the first flow path between the intake port and the first fan. a water flow path;
a second damper device disposed on the exhaust ventilation flow path and selectively opening and closing the exhaust ventilation flow path;
While the first fan rotates, the second damper device closes the exhaust ventilation flow path, thereby directing the outdoor air that has flowed into the first flow path through the intake port into the first damper device. supply ventilation operation in which the device distributes air to the connection port;
As the first fan rotates and the second damper device opens the exhaust ventilation flow path, indoor air flows into the first flow path via the connection port and the exhaust ventilation flow path. and an exhaust ventilation operation in which the first damper device distributes the air to the exhaust port.
The outdoor unit is
an absorbent material disposed in a portion of the first flow path between the intake port and the first fan, through which outdoor air from the intake port passes;
further comprising a third damper device disposed in a portion of the first flow path between the absorbent material and the first fan, and selectively opening and closing the first flow path;
The exhaust ventilation flow path is connected to a portion of the first flow path between the first fan and the third damper device,
During the supply air ventilation operation, the third damper device opens the first flow path,
The air conditioner according to claim 1, wherein the third damper device closes the first flow path during the exhaust ventilation operation.
The air conditioner according to claim 2 , wherein the outdoor unit further comprises a heater disposed in a portion of the first flow path between the air inlet and the absorbent material.
The outdoor unit,
a second flow path through which outdoor air flows, independent of the first flow path;
A second fan disposed on the second flow path,
3. The air conditioner of claim 2, wherein the absorbent material is arranged such that one portion is located within the first flow path and another portion is located within the second flow path, and the absorbent material rotates so that the portion located in one of the first and second flow paths moves to the other.
The second damper device includes a damper disposed in the exhaust ventilation flow path and dividing the exhaust ventilation flow path during the exhaust ventilation operation, a shaft provided in the damper, and a motor disposed outside the exhaust ventilation flow path and rotating the shaft,
The air conditioner according to claim 1, wherein the shaft is provided on a surface of the damper facing an internal space of the exhaust ventilation flow path that becomes negative pressure when the damper divides the exhaust ventilation flow path.
The air conditioner according to claim 1, wherein the first fan is a sirocco fan.

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