WO2024024072A1

WO2024024072A1 - Air conditioner

Info

Publication number: WO2024024072A1
Application number: PCT/JP2022/029234
Authority: WO
Inventors: 尚史池田; 怜司森岡; 岳浩完戸; 慎悟濱田; 將太須貝; 明寛中花; 信洋進
Original assignee: 三菱電機株式会社
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2024-02-01

Abstract

One aspect of an indoor unit according to the present disclosure comprises: an indoor unit which is installed on an indoor wall surface, and which includes a first heat exchanger, a blower that blows air to the first heat exchanger, and a housing that accommodates the first heat exchanger and the blower; an outdoor unit which is installed outdoors and includes a second heat exchanger; a refrigerant pipe which passes through a through-hole in a wall separating the indoor and outdoor areas, and which connects the first heat exchanger and the second heat exchanger; and a ventilating device which ventilates indoor air. The ventilating device includes a ventilation intake portion which is provided in a surface of the housing and takes in the indoor air, a ventilation discharge portion which is installed outdoors and which discharges the air taken in by the ventilation intake portion to the outdoors, a ventilation flow passage which passes through the interior of the housing and the through-hole, and which connects the ventilation intake portion and the ventilation discharge portion, and a ventilation fan which is provided in the ventilation discharge portion and which feeds the indoor air to the outdoors through the ventilation flow passage. The housing is provided with an intake port for leading air into the housing and a blowout port for discharging air from the housing, and the ventilation intake portion and the intake port are provided in surfaces of the housing that face in mutually different directions.

Description

air conditioner

The present disclosure relates to an air conditioner.

In recent years, air conditioners have become commonplace that maintain a comfortable temperature environment indoors by exchanging indoor air with a heat exchanger inside the indoor unit and supplying it indoors. Such air conditioners only circulate indoor air using the indoor unit and do not perform ventilation between the indoor air and the outdoors, so if the indoor air conditioner remains in an airtight state for a long time, the indoor air becomes contaminated. Therefore, an air conditioner equipped with a ventilation unit that discharges indoor air to the outdoors has been disclosed (for example, see Patent Document 1).

Patent No. 3570260

In conventional air conditioners, suction was performed from the back of the indoor unit between the wall and the wall. For this reason, there is a problem in that indoor dust or dirt adheres as dirt to the wall surface around the indoor unit.

In view of the above circumstances, the present disclosure aims to provide an air conditioner that ventilates the room while keeping the wall surface of the room clean.

One aspect of the air conditioner according to the present disclosure is installed on a wall surface of a room, and houses a first heat exchanger, an air blower that blows air to the first heat exchanger, and the first heat exchanger and the air blower. An indoor unit having a housing, an outdoor unit installed outdoors and having a second heat exchanger, and the first heat exchanger and the second heat exchanger passing through a through hole in a wall separating the indoor and outdoor areas. a refrigerant pipe that connects the casing with a refrigerant pipe, and a ventilation device that ventilates the air in the room; a ventilation exhaust section that is installed and exhausts the air taken in by the ventilation intake section to the outside of the room; a ventilation flow path that connects the ventilation intake section and the ventilation exhaust section through the inside of the casing and the through hole; a ventilation fan provided in the ventilation exhaust section to send air from the room to the outside through the ventilation flow path; The ventilation suction part and the suction port are provided on surfaces of the housing facing in different directions from each other.

According to the present disclosure, it is possible to provide an air conditioner that ventilates the room while keeping the wall surface of the room clean.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the schematic structure of the air conditioner in embodiment. FIG. 2 is a schematic diagram of the installed state of the air conditioner according to the embodiment, viewed from the side; 1 is a schematic diagram of an installed state of an air conditioner according to an embodiment, viewed from a perspective direction. It is a perspective view of an indoor unit of an embodiment. FIG. 3 is an exploded view of the ventilation suction section of the embodiment. It is a perspective view of the ventilation exhaust part of embodiment. FIG. 7 is a perspective view of an indoor unit to which a ventilation suction part of Modification 1 is attached. FIG. 7 is a perspective view of an indoor unit to which a ventilation suction part of Modification 2 is attached.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the scope of the present disclosure is not limited to the following embodiments, and can be arbitrarily modified within the scope of the technical idea of the present disclosure. Further, in the following drawings, in order to make each structure easier to understand, the scale and number of each structure may be different from the scale and number of the actual structure.

Additionally, the drawings appropriately indicate an X axis, a Y axis, and a Z axis. The X-axis indicates one of the horizontal directions. The Y axis indicates the other horizontal direction. The Z axis indicates the vertical direction. In the following description, the horizontal direction along the X-axis will be referred to as the "front-back direction X," the horizontal direction along the Y-axis will be referred to as the "left-right direction Y," and the vertical direction will be referred to as the "vertical direction Z." The front-rear direction X, the left-right direction Y, and the vertical direction Z are directions that are orthogonal to each other. In the following explanation, the side of the vertical direction Z that the Z-axis arrow points to (+Z side) is referred to as the upper side, and the side of the vertical direction Z that is opposite to the side that the Z-axis arrow points to (-Z side) is referred to as the lower side. do. Further, in the front-rear direction X, the side toward which the X-axis arrow points (+X side) is the front side, and in the front-rear direction X, the side opposite to the side toward which the X-axis arrow points (-X side) is the rear side. Moreover, the left-right direction Y is the left-right direction when the indoor unit of the following embodiment is viewed from the front (+X side). In other words, the side of the left-right direction Y that the Y-axis arrow points to (+Y side) is the right side, and the side of the left-right direction Y that is opposite to the side that the Y-axis arrow points to (-Y side) is the left side.

<Overall configuration>
FIG. 1 is a schematic diagram showing a schematic configuration of an air conditioner 100 in this embodiment. As shown in FIG. 1, the air conditioner 100 includes an outdoor unit 10, an indoor unit 20, a circulation path section (refrigerant piping) 18, and a ventilation device 30. The outdoor unit 10 is placed outdoors 7. The indoor unit 20 is arranged indoors 8. The outdoor unit 10 and the indoor unit 20 are connected to each other by a circulation path section 18 through which a refrigerant 19 circulates. A part of the ventilation device 30 is placed indoors 8 and the other part is placed outdoors 7. The ventilation device 30 exhausts air from the room 8 where the indoor unit 20 is placed to the outdoors 7.

The air conditioner 100 can adjust the temperature of the air in the room 8 by exchanging heat between the refrigerant 19 flowing in the circulation path section 18 and the air in the room 8 in which the indoor unit 20 is placed. Examples of the refrigerant 19 include a fluorine-based refrigerant or a hydrocarbon-based refrigerant that has a low global warming potential (GWP).

The outdoor unit 10 includes a housing 11, a compressor 12, a heat exchanger 13, a flow rate adjustment valve 14, a blower 15, a four-way valve 16, and a control section 17. Inside the housing 11, a compressor 12, a heat exchanger 13, a flow rate regulating valve 14, an air blower 15, a four-way valve 16, and a control unit 17 are housed.

The compressor 12, the heat exchanger 13, the flow rate adjustment valve 14, and the four-way valve 16 are provided in a portion of the circulation path portion 18 located inside the housing 11. The compressor 12, the heat exchanger 13, the flow rate adjustment valve 14, and the four-way valve 16 are connected by a portion of the circulation path portion 18 located inside the housing 11.

The four-way valve 16 is provided in a portion of the circulation path section 18 that is connected to the discharge side of the compressor 12. The four-way valve 16 can reverse the direction of the refrigerant 19 flowing within the circulation path section 18 by switching a part of the circulation path section 18 . When the path connected by the four-way valve 16 is the path shown by the solid line in the four-way valve 16 in FIG. 1, the refrigerant 19 flows in the circulation path section 18 in the direction shown by the solid line arrow in FIG. On the other hand, when the path connected by the four-way valve 16 is the path shown by the broken line in the four-way valve 16 in FIG. 1, the refrigerant 19 flows in the circulation path portion 18 in the direction shown by the broken line arrow in FIG.

The indoor unit 20 includes a housing 21, a heat exchanger 22, an air blower 23 as an air blower, and a control unit 24. The housing 21 accommodates a heat exchanger 22, a blower 23, and a control unit 24 therein. The indoor unit 20 is capable of a cooling operation that cools the air in the room 8 where the indoor unit 20 is placed, and a heating operation that warms the air in the room 8 where the indoor unit 20 is placed. Note that in FIG. 1, the blower 23 is shown schematically.

When the indoor unit 20 is operated for cooling, the refrigerant 19 flowing within the circulation path section 18 flows in the direction shown by the solid arrow in FIG. 1. That is, when the indoor unit 20 is operated for cooling, the refrigerant 19 flowing in the circulation path section 18 is transferred to the compressor 12, the heat exchanger 13 of the outdoor unit 10, the flow rate adjustment valve 14, and the heat exchanger 22 of the indoor unit 20. are circulated in this order and returned to the compressor 12. In the cooling operation, the heat exchanger 13 in the outdoor unit 10 functions as a condenser, and the heat exchanger 22 in the indoor unit 20 functions as an evaporator.

On the other hand, when the indoor unit 20 is operated for heating, the refrigerant 19 flowing within the circulation path section 18 flows in the direction shown by the broken line in FIG. That is, when the indoor unit 20 is operated for heating, the refrigerant 19 flowing in the circulation path section 18 is transferred to the compressor 12, the heat exchanger 22 of the indoor unit 20, the flow rate adjustment valve 14, and the heat exchanger 13 of the outdoor unit 10. are circulated in this order and returned to the compressor 12. In heating operation, the heat exchanger 13 in the outdoor unit 10 functions as an evaporator, and the heat exchanger 22 in the indoor unit 20 functions as a condenser.

<Indoor unit>
FIGS. 2 and 3 are schematic diagrams showing the installed state of the air conditioner 100 according to the embodiment.
As shown in FIG. 2, the indoor unit 20 is a wall-mounted indoor unit fixed to the upper region of the wall surface 9a of the indoor room 8. The indoor unit 20 has a substantially rectangular parallelepiped shape that is long in the left-right direction Y.

As shown in FIG. 2, the blower 23 is housed within the casing 21 of the indoor unit 20. The blower 23 extends in the left-right direction Y. The blower 23 is rotated around a rotating shaft by a fan motor 23a. Heat exchanger 22 is located in front of and above blower 23 . The heat exchanger 22 extends in the left-right direction Y.

The housing 21 includes an outer shell member 21b and an air passage member 21d. The outer shell member 21b is a member that constitutes a part of the outer shell of the housing 21. The outer shell member 21b improves the design of the exterior of the indoor unit 20. The outer shell member 21b has a substantially rectangular parallelepiped box shape that opens rearward. The rear opening of the outer shell member 21b is closed by the air passage member 21d. The air passage member 21d is a member that forms part of an air passage through which air sucked into the housing 21 by the blower 23 passes. The air passage member 21d is hooked onto a mounting plate (not shown) fixed to the wall surface 9a on the indoor 8 side. Thereby, the indoor unit 20 is fixed to the wall surface 9a.

The housing 21 has an inlet 20a and an outlet 20b. In this embodiment, the suction port 20a and the blowout port 20b are formed in the outer shell member 21b. The suction port 20a opens upward and extends in the axial direction. A filter (not shown) is arranged at the suction port 20a. On the other hand, the air outlet 20b opens forward and downward, and extends in the axial direction. A wind direction control vane 25 is arranged at the air outlet 20b.

The air in the room 8 is sucked into the casing 21 through the suction port 20a by driving the blower 23. Air sucked into the housing 21 from the suction port 20a passes through the heat exchanger 22 and is blown out into the room 8 from the blow-off port 20b. The air passing through the air outlet 20b is blown into the room 8 in the vertical direction Z and in the left-right direction Y by the wind direction control vane 25.

A control section 24 is provided inside the casing 21. The control unit 24 is disposed inside the housing 21 at one end in the left-right direction Y. The control unit 24 controls the fan motor 23a, the wind direction control vane 25, the heat exchanger 22, and the like.

FIG. 4 is a perspective view of the indoor unit 20. The outer shape of the casing 21 of the indoor unit 20 is a prismatic shape extending in the left-right direction Y. The housing 21 has an upper surface 21p facing upward, a lower surface 21q facing downward, a front surface 21s facing forward, and a pair of side surfaces 21t facing the left-right direction Y, respectively. The suction port 20a is provided on the upper surface 21p. A part of the suction port 20a may be provided on the front surface 21s. The air outlet 20b is provided on the lower surface 21q.

As shown in FIG. 3, the indoor unit 20 is provided with a drain hose 20d. The tip of the drain hose 20d extends to the outside 7. The drain hose 20d discharges drain water that condenses on the heat exchanger 22 to the outside 7 during cooling.

<Outdoor unit>
The outdoor unit 10 is placed outdoors. The housing 11 of the outdoor unit 10 has an outdoor unit suction port 11b and an outdoor unit outlet 11a. Inside the casing 11, the blower 15 (see FIG. 1) sends air from the outdoor unit suction port 11b side through the heat exchanger 13 (see FIG. 1) toward the outdoor unit outlet 11a. Promote heat exchange.

As shown in FIG. 3, the outdoor unit 10 and the indoor unit 20 are connected by the circulation path section 18 and the first electric wiring 10e. The circulation path section 18 is configured in a loop shape between the outdoor unit 10 and the indoor unit 20. Therefore, the circulation path section 18 connects the outdoor unit 10 and the indoor unit 20 with a pair of pipes. The first electrical wiring 10e includes a power line that supplies power to the outdoor unit 10 via the indoor unit 20, and a signal line for controlling the outdoor unit 10 and the indoor unit 20 in cooperation with each other. The circulation route section 18 and the first electric wiring 10e pass through a through hole 9h provided in a wall 9 separating the indoor room 8 and the outdoor room 7. Thereby, the circulation route part 18 and the first electric wiring 10e are drawn out from the indoor room 8 to the outdoor room 7.

<Ventilation system>
The ventilation device 30 is a device that keeps the air inside the room 8 clean by discharging the air inside the room 8 to the outside 7 . The ventilation device 30 may be driven in conjunction with the indoor unit 20 and the outdoor unit 10, or may be driven independently of these.

The ventilation device 30 includes a ventilation suction section 32, a ventilation exhaust section 33, a ventilation flow path 31, a ventilation fan 34, and a second electrical wiring 30e.

The ventilation suction unit 32 sucks air from the room 8. The ventilation suction section 32 is attached to the indoor unit 20. The ventilation suction section 32 is provided on the surface of the casing 21 of the indoor unit 20. In the present embodiment, the ventilation suction section 32 is located at the left (−Y side) end of the lower surface 21q of the casing 21 of the indoor unit 20.

As shown in FIG. 4, the ventilation suction section 32 is arranged on the lower surface 21q of the casing 21 of the indoor unit 20 so as to be spaced apart from the wall surface 9a of the indoor room 8. Therefore, it is possible to suppress the flow of air flowing into the ventilation suction section 32 along the wall surface 9a, and to suppress the adhesion of dirt to the wall surface 9a.

As described above, the suction port 20a of the indoor unit 20 is provided on the upper surface 21p of the housing 21. According to the present embodiment, the ventilation suction section 32 of the ventilation device 30 and the suction port 20a of the indoor unit 20 are provided on surfaces of the casing 21 facing in different directions.

FIG. 5 is an exploded view of the ventilation suction section 32.
The ventilation suction section 32 has a dust filter 32f and a grill 32g. The open end of the ventilation channel 31 is covered. Moreover, the grill 32g covers the dust filter 32f.

The dust filter 32f has a rectangular shape in plan view. The dust filter 32f captures dust and dirt contained in the air in the room 8. Thereby, the dust filter 32f suppresses dust and dust from flowing into the ventilation flow path 31 together with air from the open end of the ventilation flow path 31.

The grill 32g is a plate provided with a plurality of ventilation holes 32h. The ventilation hole 32h of this embodiment is a long hole extending in the left-right direction Y. The grill 32g holds a dust filter 32f. Furthermore, the grill 32g is fixed to the end of the ventilation channel 31 on the indoor 8 side.

As shown by the two-dot chain line in FIG. 5, the grill 32g may have fins 32j provided at the edges of the ventilation holes 32h. The fins 32j protrude from the edge of the air hole 32h on the wall surface 9a side (that is, the rear (-X side)) toward either side in the plate surface direction of the grill 32g. Furthermore, the fins 32j extend in the left-right direction Y. The fins 32j limit the direction of air flowing into the ventilation holes 32h in a direction away from the wall surface 9a. Thereby, the fins 32j suppress the air flowing into the ventilation hole 32h from flowing along the wall surface 9a, and suppress the adhesion of dirt to the wall surface 9a.

As shown in FIG. 3, the ventilation exhaust section 33 is installed outdoors 7. The ventilation exhaust part 33 is installed on the wall surface 9b of the outdoor room 7. In this embodiment, the ventilation exhaust section 33 is separate from the outdoor unit 10. However, the ventilation exhaust section 33 may be provided integrally with the outdoor unit 10.

FIG. 6 is a perspective view of the ventilation exhaust section 33.
The ventilation exhaust part 33 is fixed to the end of the ventilation channel 31 on the outdoor 7 side. The ventilation exhaust section 33 includes a fan case 33a and a connecting section 33b.

The fan case 33a is box-shaped. The fan case 33a accommodates a ventilation fan 34 inside. The fan case 33a is fixed to the wall surface 9b of the wall 9 on the outdoor 7 side. A blowout hole 33c is provided in the fan case 33a. The blowout hole 33c blows out the air that has passed through the ventilation channel 31 and reached the ventilation exhaust section 33 to the outside 7. The blowout hole 33c is located on a lower surface 33q facing downward among the plurality of surfaces of the fan case 33a. Therefore, the blowout hole 33c faces downward. According to this embodiment, since the blow-off holes 33c face downward, it is possible to suppress rainwater from entering the inside of the ventilation exhaust section 33 from the blow-off holes 33c.

The blow-off holes 33c of this embodiment are arranged on the lower surface 33q of the fan case 33a so as to be biased in the direction away from the wall surface 9b. Therefore, it is possible to prevent dirt from adhering to the wall surface 9b or deterioration of the wall surface 9b due to the exhaust gas blown out from the blow-off hole 33c.

The connecting portion 33b connects the end of the ventilation flow path 31 on the outdoor 7 side and the fan case 33a. The connecting portion 33b is connected to a side surface 33t of the fan case 33a. The internal space of the connecting portion 33b and the internal space of the fan case 33a communicate with each other. The connecting portion 33b guides the air that has passed through the ventilation channel 31 into the fan case 33a.

The ventilation fan 34 is provided in the ventilation exhaust section 33. The ventilation fan 34 sends the air inside the fan case 33a to the outside 7 from the blow-off hole 33c, and generates negative pressure inside the ventilation channel 31. Thereby, the ventilation fan 34 sends air from the indoor room 8 to the outdoor room 7 via the ventilation channel 31.

The ventilation channel 31 is a tubular pipe. One end of the ventilation channel 31 is placed inside the room 8, and the other end is placed outside the room 7. A ventilation suction section 32 is connected to the end of the ventilation channel 31 on the indoor 8 side, and a ventilation exhaust section 33 is connected to the end on the outdoor 7 side. Thereby, the ventilation channel 31 connects the ventilation suction section 32 and the ventilation exhaust section 33. The ventilation flow path 31 passes through the inside of the casing 21 of the indoor unit 20 and through the through hole 9h of the wall 9. Wind flows inside the ventilation channel 31 from the end on the indoor 8 side toward the end on the outdoor 7 side.

As shown in FIG. 5, a joint portion 31a and a nozzle portion 31b are provided at the end of the ventilation flow path 31 on the indoor 8 side. The joint portion 31a and the nozzle portion 31b are located inside the casing 21 of the indoor unit 20. The joint portion 31a is a cylindrical member that is bent approximately 90 degrees. The joint portion 31a bends the flow direction of the air flowing inside the ventilation channel 31. The nozzle portion 31b is provided at the suction side end of the joint portion 31a. The nozzle portion 31b is a rectangular plate provided with a through hole serving as an open end of the ventilation flow path 31. A joint portion 31a is fixed to the edge of the through hole of the nozzle portion 31b. Further, a ventilation suction section 32 is attached to the nozzle section 31b.

As shown in FIG. 3, the ventilation flow path 31 extends in the left-right direction Y of the housing 21 inside the housing 21. The ventilation channel 31 is connected to the ventilation suction section 32 at the left end (-Y side) of the housing 21, and extends to the outside of the housing 21 at the right (+Y side) end of the housing 21. Inside the housing 21 , the ventilation flow path 31 is arranged below the blower 23 and the heat exchanger 22 .

The second electrical wiring 30e connects the indoor unit 20 and the ventilation fan 34. The control unit 24 of the indoor unit 20 supplies power to the ventilation fan 34 via the second electric wiring 30e to drive the ventilation fan 34, and controls the rotation speed of the ventilation fan 34. In this embodiment, a case has been described in which the control unit 24 of the indoor unit 20 controls the ventilation fan 34 of the ventilation device 30. However, the ventilation device 30 may have its own control unit, and the control unit may independently control the ventilation fan 34. Further, the ventilation fan 34 of the ventilation device 30 may be connected to the control unit 17 of the outdoor unit 10 via electrical wiring, and may be controlled by the control unit 17 of the outdoor unit.

In addition to the ventilation flow path 31 and the second electric wiring 30e, the circulation path portion 18, the first electric wiring 10e, and the drain hose 20d are connected to the indoor unit 20. The circulation path section 18 , the first electric wiring 10 e , the second electric wiring 30 e , the drain hose 20 d , and the ventilation flow path 31 extend from the back of the right (+Y side) end of the indoor unit 20 and are connected to the wall 9 . It passes through the provided through hole 9h. Thereby, the ventilation channel 31 and the second electric wiring 30e are drawn out from the indoor room 8 to the outdoor room 7.

The air conditioner 100 of this embodiment is operated by a user using, for example, a remote controller. Power is supplied to the air conditioner 100 by a user's operation of a remote controller. By being supplied with power, the air conditioner 100 functions as a heater or a cooler. Furthermore, by being supplied with power, the air conditioner 100 drives the ventilation device 30 to ventilate the room 8 . The air conditioner 100 can perform heating or cooling and also drive the ventilation device 30, or can drive only the ventilation device 30 without performing either heating or cooling.

<Summary>
The air conditioner 100 of this embodiment includes an indoor unit 20, an outdoor unit 10, a circulation path section (refrigerant piping) 18, and a ventilation device 30. The indoor unit 20 is installed on the wall surface 9a of the indoor room 8, and includes a heat exchanger (first heat exchanger) 22, a blower 23 that blows air to the heat exchanger 22, and a housing 21 that houses the heat exchanger 22 and the blower 23. has. The outdoor unit 10 is installed outdoors 7 and includes a heat exchanger (second heat exchanger) 13. The circulation path portion 18 connects the heat exchanger 22 of the indoor unit 20 and the heat exchanger 13 of the outdoor unit 10 through a through hole 9h in the wall 9 separating the indoor unit 8 and the outdoor unit 7. The ventilation device 30 ventilates the air in the room 8. The ventilation device 30 has a ventilation suction section 32, a ventilation exhaust section 33, a ventilation flow path 31, and a ventilation fan 34. The ventilation suction unit 32 is provided on the surface of the casing 21 and sucks air from the room 8. The ventilation exhaust section 33 is installed outside the room 7 and exhausts the air taken in by the ventilation suction section 32 to the outside 7. The ventilation channel 31 connects the ventilation suction section 32 and the ventilation exhaust section 33 through the inside of the casing 21 and the through hole 9h. The ventilation fan 34 is provided in the ventilation exhaust section 33 and sends air from the indoor room 8 to the outdoor room 7 via the ventilation channel 31. The housing 21 is provided with an inlet 20a that introduces air into the housing 21, and an outlet 20b that exhausts air from the housing 21. The ventilation suction section 32 and the suction port 20a are provided on surfaces of the housing 21 facing in different directions.

According to this embodiment, the ventilation suction section 32 is provided on the surface of the casing 21. Therefore, the ventilation suction section 32 is arranged apart from the wall surface 9a of the indoor room 8. For example, when the ventilation system inhales through the gap between the back of the indoor unit and the wall, the airflow sucked into the ventilation inlet flows along the wall 9a, so there is a risk that dust or dust may adhere to the wall. be. On the other hand, according to the present embodiment, since the ventilation suction section 32 is arranged apart from the wall surface 9a, the airflow sucked into the ventilation suction section 32 flows away from the wall surface 9a. Therefore, it is possible to suppress the adhesion of dirt to the wall surface 9a and keep the wall surface 9a clean.

According to this embodiment, the ventilation suction section 32 of the ventilation device 30 and the suction port 20a of the indoor unit 20 are provided on the surfaces of the casing 21 facing in different directions. The ventilation suction unit 32 and the suction port 20a each suck air from the room 8. If the ventilation suction section 32 and the suction port 20a are arranged close to each other, the airflows caused by the respective suctions will influence each other, and there is a possibility that sufficient suction amounts for each cannot be secured. In particular, if there is a large difference in the amount of suction between the ventilation suction section 32 and the suction port 20a, there is a risk that backflow will occur in the ventilation suction section 32 or the suction port 20a due to negative pressure during suction. According to the present embodiment, the ventilation suction section 32 and the suction port 20a are provided in different directions on the surface of the casing 21, so that it is possible to suppress the influence of negative pressure during suction on each other. Thereby, the flow rate of air flowing into the indoor unit 20 and the flow rate of air flowing into the ventilation device 30 can be respectively ensured sufficiently, and the cooling or heating function of the indoor unit 20 and the ventilation device 30 ventilation functions can be fully demonstrated.

In particular, the suction port 20a of this embodiment is provided on the upper surface 21p of the casing 21, and the ventilation suction part 32 is provided on the lower surface 21q of the casing 21. That is, the suction port 20a and the ventilation suction part 32 of this embodiment are provided on the surfaces of the casing 21 facing opposite to each other. Therefore, it is possible to effectively prevent the airflow flowing into the suction port 20a and the airflow flowing into the ventilation suction section 32 from influencing each other.

According to this embodiment, the ventilation fan 34 is provided in the ventilation exhaust section 33 outside the room 7. Therefore, the noise caused by the drive of the ventilation fan 34 is difficult to be transmitted to the room 8, and the room 8 can be kept quieter than when the ventilation fan 34 is disposed inside the room 8.

The ventilation exhaust section 33 of this embodiment is separate from the outdoor unit 10. Therefore, compared to the case where the ventilation exhaust part 33 is provided integrally with the outdoor unit 10, the ventilation exhaust part 33 can be freely arranged, and the ventilation flow path 31 extending from the indoor room 8 to the ventilation exhaust part 33 can be shortened. can do. Thereby, the pipe resistance of the ventilation channel 31 can be reduced, the ventilation efficiency of the ventilation device 30 can be increased, and the power consumption of the ventilation device 30 can be reduced. Furthermore, the ventilation exhaust part 33 of this embodiment is installed on the wall surface 9b on the outdoor 7 side. Therefore, the ventilation exhaust part 33 can be easily arranged near the through hole 9h of the wall 9, and the ventilation flow path 31 can be further shortened.

The ventilation suction section 32 of this embodiment includes a dust filter 32f that covers the open end of the ventilation flow path 31, and a grill 32g that covers the dust filter 32f. According to the present embodiment, the dust filter 32f can capture dirt such as dust and dust in the room 8, so that the dust and dirt in the room 8 are not exhausted to the outdoors. Thereby, it is possible to prevent the wall surface 9b on which the ventilation/exhaust section 33 is installed from becoming dirty with dust and the like. Further, according to the present embodiment, the dust filter 32f is provided in the ventilation suction section 32 of the room 8. Therefore, the user can clean and replace the dust filter 32f from the indoor 8 side, thereby simplifying the cleaning and replacement work.

The ventilation suction section 32 of this embodiment is located at one end of the housing 21 in the left-right direction Y (in this embodiment, the left side (-Y side)), and the ventilation flow path 31 is located at the end of the housing 21 in the left-right direction Y. The portion 32 extends inside the housing 21 in the left-right direction Y, and extends to the outside of the housing 21 at the other end of the housing 21 in the left-right direction Y (in this embodiment, the right side (+Y side)).

The ventilation flow path 31 is connected to the indoor unit 20 together with other wiring and piping (circulation path section 18, first electric wiring 10e, second electric wiring 30e, drain hose 20d, and ventilation flow path 31). It extends from the machine 20 and is guided into the through hole 9h of the wall 9. Therefore, other wiring and piping are arranged in a concentrated manner inside the casing 21 near the portion where the ventilation channel 31 extends.

According to the present embodiment, the ventilation flow path 31 extends from one end side to the other end side in the left-right direction Y inside the housing 21, so that the ventilation flow path 31 is able to sufficiently cover the area where other wiring and piping are arranged in a concentrated manner. In addition to securing a sufficient space, it is possible to secure a sufficient installation space for the ventilation suction section 32. Therefore, the degree of freedom in designing the shape and size of the ventilation suction section 32 can be increased, and the suction efficiency of the ventilation suction section 32 can be easily increased.

In the present embodiment, the ventilation suction section 32 is arranged at one end of the housing 21 in the left-right direction Y, and the ventilation flow path 31 is arranged at the other end of the housing 21 in the left-right direction Y. We have explained the case where it extends out from the section. However, the ventilation channel 31 may extend in the left-right direction Y from the end on the side where the ventilation suction section 32 is arranged. When this configuration is adopted, the length of the ventilation flow path 31 arranged inside the housing 21 can be shortened, and the pipe resistance of the ventilation flow path can be suppressed. Furthermore, the ventilation/intake portions 32 may be arranged at the left and right ends of the housing 21, respectively. When this configuration is adopted, ventilation efficiency can be increased by increasing the number of ventilation suction sections 32, and the time required to ventilate the entire air in the room 8 can be shortened.

<Modified example>
Next, a modification of the

ventilation suction parts

132 and 232 that can be employed in the above-described embodiment will be described. Note that the same reference numerals are given to the same components as those of the embodiments already described, and the explanation thereof will be omitted.

(Modification 1)
FIG. 7 is a perspective view of the indoor unit 120 to which the ventilation suction section 132 of Modification 1 is attached.
The ventilation suction section 132 of this modification is provided on the lower surface 21q of the casing 21 of the indoor unit 120. Further, as described above, the suction port 20a of the indoor unit 120 is provided on the upper surface 21p of the housing 21. That is, the ventilation suction section 132 of the ventilation device 130 and the suction port 20a of the indoor unit 120 are provided on surfaces of the casing 21 facing different directions. Therefore, it is possible to effectively prevent the airflow flowing into the suction port 20a and the airflow flowing into the ventilation suction section 132 from influencing each other.

Similar to the embodiment described above, the air outlet 20b of the indoor unit 120 is provided on the lower surface 21q of the housing 21 and extends in the left-right direction Y of the housing 21. Further, the ventilation suction section 132 of this modification is provided on the lower surface 21q of the housing 21 between the air outlet 20b and the end on the wall surface 9a side of the room 8, and extends in the left-right direction Y of the housing 21. .

According to this modification, the ventilation suction section 132 extends in the left-right direction Y. Further, the ventilation suction section 132 is provided with a ventilation hole 132h extending in the left-right direction Y. According to this modification, it is easy to ensure a large opening area of the ventilation suction section 132, and the ventilation resistance of the ventilation suction section 132 can be suppressed. Thereby, the ventilation efficiency of the ventilation device 130 can be increased, and the power consumption of the ventilation device 130 can be suppressed.

According to this modification, the ventilation suction part 132 and the air outlet 20b extend in the left-right direction of the housing 21 on the lower surface 21q of the housing 21. That is, the ventilation suction section 32 and the air outlet 20b extend parallel to each other. Therefore, the ventilation suction section 132 is difficult to be locally biased in the longitudinal direction of the air outlet 20b. It is possible to prevent the airflow blown out from the air outlet 20b from being locally disturbed due to the influence of the airflow sucked into the ventilation suction section 132. As a result, efficient and uniform air blowing from the air outlet 20b can be realized, and the controllability of the wind direction of the indoor unit 120 can be improved.

Further, the ventilation suction section 32 of this modification is provided between the air outlet 20b of the indoor unit 120 and the end of the housing 21 on the wall surface 9a side. Therefore, the ventilation suction section 132 can be spaced apart from the air outlet 20b and the wall surface 9a in a well-balanced manner, and it is possible to suppress the adhesion of dirt to the wall surface 9a. Furthermore, interference between the airflow blown out from the air outlet 20b and the airflow sucked into the ventilation suction section 132 can be suppressed.

(Modification 2)
FIG. 8 is a perspective view of the indoor unit 220 to which the ventilation suction section 232 of Modification 2 is attached.
The ventilation suction part 232 of this modification is provided on the side surface 21t of the housing 21 of the indoor unit 220 facing in the left-right direction Y. Further, as described above, the suction port 20a of the indoor unit 220 is provided on the upper surface 21p of the housing 21. That is, the ventilation suction section 232 of the ventilation device 230 and the suction port 20a of the indoor unit 220 are respectively provided on the surface of the casing 21 facing in different directions. Therefore, it is possible to effectively prevent the airflow flowing into the suction port 20a and the airflow flowing into the ventilation suction section 232 from influencing each other.

Similar to the embodiment described above, the air outlet 20b of the indoor unit 220 is provided on the lower surface 21q of the housing 21. Further, the ventilation suction section 232 of this modification is provided on the side surface 21t of the housing 21. That is, the ventilation suction section 232 of the ventilation device 230 and the air outlet 20b of the indoor unit 220 are provided on surfaces of the casing 21 facing different directions. Therefore, the airflow blown out from the air outlet 20b is less affected by the airflow sucked into the ventilation suction section 232, and the airflow direction controllability of the indoor unit 220 can be improved.

Furthermore, according to this modification, the ventilation suction section 232 is provided on the side surface 21t of the housing 21 and opens in the left-right direction Y of the housing 21. Therefore, the driving sound of the ventilation device 230 caused by the intake from the ventilation suction unit 232 can be made difficult for occupants in the room 8 to hear, and a quiet environment in the room 8 can be easily ensured.

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the configurations of each embodiment described above.

7...Outdoor, 8...Indoor, 9...Wall, 9a, 9b...Wall surface, 9h...Through hole, 10...Outdoor unit, 11, 21...Casing, 13...Heat exchanger (second heat exchanger), 15, 23...Blower, 18...Circulation path section (refrigerant piping), 19...Refrigerant, 20, 120, 220...Indoor unit, 20a...Suction port, 20b...Blowout port, 21p...Top surface, 21q, 33q...Bottom surface, 21t, 33t ...Side surface, 22... Heat exchanger (first heat exchanger), 30, 130, 230... Ventilation device, 31... Ventilation channel, 32, 132, 232... Ventilation suction section, 32f... Dust filter, 32g... Grill, 33...Ventilation exhaust part, 34...Ventilation fan, 100...Air conditioner, Y...Left and right direction

Claims

an indoor unit that is installed on a wall of a room and has a first heat exchanger, an air blower that blows air to the first heat exchanger, and a casing that houses the first heat exchanger and the air blower;
an outdoor unit installed outdoors and having a second heat exchanger;
refrigerant piping that connects the first heat exchanger and the second heat exchanger through a through hole in a wall separating the indoor and outdoor areas;
A ventilation device that ventilates the air in the room,
The ventilation device includes:
a ventilation suction unit provided on the surface of the casing and sucking the indoor air;
a ventilation exhaust section installed outside the room and exhausting the air taken in by the ventilation intake section to the outside;
a ventilation flow path that passes through the interior of the casing and the through hole and connects the ventilation intake section and the ventilation exhaust section;
a ventilation fan that is provided in the ventilation exhaust section and sends the air inside the room to the outside of the room through the ventilation flow path;
The casing includes:
a suction port that introduces air into the housing;
an air outlet for discharging air from the casing;
The ventilation suction part and the suction port are provided on surfaces of the housing facing in different directions,
Air conditioner.
The ventilation exhaust section is separate from the outdoor unit, and is installed on the wall on the outside of the room.
The air conditioner according to claim 1.
The ventilation suction part is
a dust filter that covers the open end of the ventilation flow path;
a grill that covers the dust filter;
The air conditioner according to claim 1 or 2.
The ventilation suction part is located at one end of the housing in the left and right direction,
The ventilation flow path extends from the ventilation suction part inside the housing in the left-right direction, and extends to the outside of the housing at the other end of the housing in the left-right direction.
The air conditioner according to any one of claims 1 to 3.
The suction port is provided on the top surface of the housing,
The ventilation suction part is provided on the lower surface of the casing.
The air conditioner according to any one of claims 1 to 4.
The ventilation suction part and the air outlet extend in the left-right direction of the housing on the lower surface of the housing,
The air conditioner according to claim 5.
The suction port is provided on the top surface of the housing,
The ventilation suction part is provided on a side surface facing in the left-right direction of the housing,
The air conditioner according to any one of claims 1 to 4.