JP2012032035A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which can be easily installed, and efficiently dehumidify the inside of a wall.SOLUTION: In the air conditioner 100 for dehumidifying an in-wall space 80 simultaneously during a cooling operation for cooling a room 4A to be air-conditioned, an indoor unit 3 installed with a suction port 31 and a blowout port 32 facing the room 4A to be air-conditioned and a dehumidifier 5 installed with a suction port 56 and a blowout port 55 facing the in-wall space 80, are integrally formed into an air conditioning unit 2, and the indoor heat exchanger 21 of the indoor unit 3 and the heat exchanger 51 for dehumidification of the dehumidifier 5 are connected to the same refrigerant system.

Description

  The present invention relates to an air conditioner that simultaneously cools a conditioned room and dehumidifies a space in a wall.

  Conventionally, for example, in a building such as a general detached house, it is known that condensation occurs in a wall due to moisture. Therefore, a dehumidification system provided under the floor of a building is known in order to prevent wood from decaying due to dew condensation in the walls, and mold growth on the indoor wallboard, flooring, or the back of a tatami mat. (For example, refer to Patent Document 1). In this type of dehumidification system, a supply port for supplying dehumidified air to a subfloor space formed in a sealed structure, and a recovery port for returning the air that has flowed through the subfloor space to the dehumidification system are provided at separate positions. Dehumidify the space under the floor, and reduce the humidity in the wall space such as the inside of the wall, the ceiling, and the attic.

JP 2001-133007 A

However, in this type of dehumidification system, in order to circulate dehumidified air efficiently in the underfloor space, it is necessary to devise the basic structure of the building so that air flows from the air supply port to the recovery port. Therefore, when introducing the dehumidification system, it is necessary to perform the foundation work of the building. Therefore, there is a problem that the introduction work of the dehumidification system is not only large-scale but also difficult to introduce into existing buildings.
An object of the present invention is to provide an air conditioner that can solve the above-described problems of the prior art, can be easily installed, and can efficiently dehumidify a wall.

  In order to achieve the above object, the present invention provides an air conditioner capable of simultaneously dehumidifying a space in a wall at the time of cooling operation for cooling a room to be conditioned, with a suction port and an air outlet being directed to the room to be conditioned. An indoor unit to be installed and a dehumidifier installed with a suction port and a blow-out port facing the space in the wall are integrated into an air conditioning unit, and the indoor heat exchanger of the indoor unit and the dehumidifier of the dehumidifier The heat exchanger is connected to the same refrigerant system.

  In this configuration, the interior space may be a ceiling back, the indoor unit may be a ceiling-embedded air conditioner, and the integrated air conditioning unit may be supported on the ceiling by a suspension bolt. . The dehumidifier may overlap the upper surface of the indoor unit, the dehumidifier may have a first drain pan on the lower surface, and the heat exchanger for dehumidification may be placed on the first drain pan. . The drain pipe of the drain pan communicates with the second drain pan of the indoor unit, and drain water from the air conditioning unit may be discharged to the outside of the air conditioning unit through the second drain pan. The dehumidifier includes a substantially box-shaped housing, and the housing includes a blow-out port formed on one side of the side surface of the housing and suction ports formed on the remaining three surfaces. A flat U-shaped dehumidifying heat exchanger may be disposed along the mouth, and the air outlet may be provided with a dehumidifying blower. The air conditioning unit may include a first control valve disposed at a refrigerant inlet of the indoor heat exchanger and a second control valve disposed at a refrigerant inlet of the dehumidifying heat exchanger. Moreover, it is good also as a structure which enabled the said dehumidifier to be connected to the said refrigerant | coolant system | strain in parallel with the said indoor unit through a connection port. The dehumidifier and the indoor unit may be connected by a connector.

  According to the present invention, the indoor unit that performs air conditioning of the conditioned room and the dehumidifier that dehumidifies the interior space are integrated, and the indoor heat exchanger and the dehumidifying heat exchanger are connected to the same refrigerant system. However, since it is an air conditioning unit, the air conditioning unit that simultaneously cools the conditioned room and dehumidifies the space in the wall can be easily installed, and the inside of the wall can be efficiently dehumidified using the refrigerant of the indoor unit. There is an effect.

It is a figure which shows schematic structure of the air conditioning system of this embodiment. It is a figure which shows the structure of the connection part of an indoor unit and a dehumidifier. It is a figure which shows the structure of the connection part at the time of removing a dehumidifier. It is a figure which shows roughly the installation state of an air conditioning unit. It is an external appearance perspective view of an air-conditioning unit. It is a sectional view in plan view of the dehumidifier. It is sectional drawing of an air conditioning unit.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a schematic configuration of an air conditioning system (air conditioning apparatus) 100 according to an embodiment to which the present invention is applied. The air conditioner 100 according to the present embodiment includes an outdoor unit 1 and an air conditioning unit 2 connected to the outdoor unit 1 through a refrigerant pipe (refrigerant system) 10. The air conditioner 100 may be a so-called multi-type air conditioner in which a plurality of air conditioning units 2 are connected, for example. In addition, the air conditioner 100 includes a control unit 60 that controls each part of the air conditioner 100.

  The outdoor unit 1 is installed outdoors, and as shown in FIG. 1, a compressor 11, an accumulator 12, a four-way valve 13, an outdoor heat exchanger 14, and an electric expansion valve 15 are connected by a refrigerant pipe 10. . The air conditioner 100 is provided to be able to switch between a cooling operation and a heating operation by switching the four-way valve 13 of the outdoor unit 1 under the control of the control unit 60. The arrows in the figure indicate the refrigerant flow during the cooling operation. During the cooling operation, the refrigerant discharged from the compressor 11 flows to the outdoor heat exchanger 14 via the four-way valve 13. The refrigerant cooled through the outdoor heat exchanger 14 is supplied to the air conditioning unit 2 through the refrigerant pipe 10 as indicated by arrows in the figure.

As shown in FIG. 1, the air conditioning unit 2 includes an indoor unit 3 and a dehumidifier 5 that are connected to the outdoor unit 1 through a refrigerant pipe 10. The indoor unit 3 includes an indoor heat exchanger 21 and a blower 22 attached to the indoor heat exchanger 21. The indoor unit 3 also includes a first mechanical valve (first control valve) 29 on the refrigerant inlet side of the indoor heat exchanger 21 during the cooling operation of the air conditioner 100. The dehumidifier 5 includes a dehumidifying heat exchanger 51 and a dehumidifying blower 52 provided alongside the dehumidifying heat exchanger 51. The dehumidifier 5 also includes a second mechanical valve (first control valve) 53 on the refrigerant inlet side of the dehumidifying heat exchanger 51 during the cooling operation of the air conditioner 100.
The indoor unit 3 and the dehumidifier 5 communicate with the refrigerant pipe 10 via T joints 17a and 17b, respectively. Thus, the dehumidifying heat exchanger 51 and the indoor heat exchanger 21 are connected to the same refrigerant system 10.

  According to this configuration, the second mechanical valve 53 is opened via the control unit 60 and a part of the refrigerant flowing through the indoor heat exchanger 21 is caused to flow through the dehumidifying heat exchanger 51 by bypassing the indoor heat exchanger 21. Can do. Further, the amount of the refrigerant flowing through the dehumidifying heat exchanger 51 can be adjusted by changing the opening degree of the second mechanical valve 53 via the control unit 60. Further, when the indoor unit 3 is thermo-off, the first mechanical valve 29 can be closed, and the dehumidifying operation can be performed by flowing the refrigerant only to the dehumidifier 5.

  For example, the dehumidifier 5 can be configured to be retrofitted to an air conditioner including the outdoor unit 1 and the indoor unit 3. In this case, as shown in FIG. 2, one end of an auxiliary pipe 16a extending to the dehumidifier 5 side is connected to the T joints 17a and 17b connected to the inter-unit piping connecting the outdoor unit 1 and the indoor unit 3. Yes. The other end of the auxiliary pipe 16 a has a flare connection port (male port) 116. When the dehumidifier 5 is not connected, the hood 117 is covered with the flare connection port 116, the bonnet 117 is fixed to the flare connection port with the flare nut 118, and the flare connection port 116 is sealed (see FIG. 3). ). On the other hand, the dehumidifier 5 includes a refrigerant pipe 16 b that communicates with the heat exchanger 51 for dehumidification. As shown in FIG. 2, the both ends 16c of the refrigerant pipe 16b are flared with the flare nut 119 inserted.

Next, connection work when retrofitting the dehumidifier 5 will be described. When retrofitting the dehumidifier 5, first, the service valve A in FIG. 1 is closed, the four-way valve 13 is set to a broken line state (cooling operation state), and the compressor 11 is operated. As a result, the refrigerant in the indoor unit 3 is collected in the refrigerant pipe of the outdoor unit 1 and the outdoor heat exchanger 14 (pump down operation). Thereafter, the service valve B is closed. In this way, the refrigerant in the refrigerant pipe on the indoor unit 3 side is collected on the outdoor unit 1 side by the pump-down operation, and is screwed into the auxiliary pipe 16a of the indoor unit 3 in a state where no refrigerant remains on the indoor unit 3 side. The flare nut 118 and the bonnet 117 are removed. 2B, the flare nut 119 of the refrigerant pipe 16b is screwed into the flare connection port 116 to form a connection port 120, and the dehumidifier 5 is connected to the refrigerant system 10. Thereafter, by opening the closed service valves A and B, the refrigerant is supplied to the dehumidifier 5 connected in parallel to the indoor unit 3 to the refrigerant system 10 via the refrigerant pipe 16 (see FIG. 1). Can do.
According to this configuration, the dehumidifier 5 can be optionally retrofitted, and the versatility of the air conditioner 100 is improved.

FIG. 4 is a diagram schematically showing a state where the air conditioning unit 2 is installed in a building 200 such as a general detached house. In the air conditioning unit 2, the indoor unit 3 and the dehumidifier 5 are integrated into a unit and supported by the wall space 80. The indoor unit 3 performs air conditioning such as cooling / heating in the conditioned room 4. During the cooling operation of the indoor unit 3, the dehumidified air can be supplied to the wall space 80 by the dehumidifier 5 provided in the air conditioning unit 2.
The indoor unit 3 includes an indoor air suction port (suction port) 31 and a blower port 32 that are disposed facing the tuned room 4. The air sucked into the indoor unit 3 from the indoor air suction port 31 is heat-exchanged by the indoor heat exchanger 21 accommodated in the indoor unit 3 as indicated by an arrow X in the figure, and is again conditioned room. 4 is blown out through the air outlet 32.
The dehumidifier 5 includes an in-wall air inlet (inlet) 56 and an in-wall outlet (outlet) 55 that are disposed facing the in-wall space 80. The in-wall space 80 includes the under floor 6, the ceiling back 7, the wall body 8, the attic 9 and the like, and is formed between the living room such as the conditioned room 4A and the outer wall 200A and the roof 200B of the building 200. For example, a heat insulating material (not shown) is arranged in the wall space 80.

  The dehumidified air supplied from the dehumidifier 5 passes through the wall 8 adjacent to the conditioned room 4A from the ceiling 7 where the air conditioning unit 2 is disposed, as indicated by the arrow Y1 in the figure, and below the floor 6 , Passes through the wall 8 again, and is collected by the dehumidifier 5. The dehumidified air supplied from the dehumidifier 5 also passes through the wall 8 adjacent to the living room 4B provided on the floor of the conditioned room 4A from the ceiling 7 where the air conditioning unit 2 is disposed, and the attic. 9 is supplied to the dehumidifier 5 again through the wall 8. The air collected by the dehumidifier 5 is heat-exchanged by the heat exchanger for dehumidification accommodated in the dehumidifier 5, dehumidified, and supplied to the in-wall space 80 again. As a result, the building 200 can be dehumidified by circulating the dehumidified air supplied from the dehumidifier 5 throughout the wall space 80 of the building 200.

  FIG. 5 is an external perspective view of the air conditioning unit 2 as viewed from the lower surface side. The indoor unit 3 that forms the air conditioning unit 2 and the dehumidifier 5 are integrally formed by overlapping with each other by bolts (connectors) 2b. The indoor unit 3 includes a substantially box-shaped housing 30, and the lower surface of the housing 30 is configured by a decorative panel 30 </ b> B attached to the housing 30. The dehumidifier 5 includes a substantially box-shaped case (housing) 50, and the case 50 is formed in substantially the same shape as the housing 30 in plan view. The case 50 is placed on the top panel 30A of the housing 30 and fixed to the housing 30 with a bolt or the like (not shown).

  The housing 30 includes a side panel 30 </ b> C that forms four side surfaces of the housing 30. Further, the four corners of the housing 30 are chamfered, and the side panel 30D is disposed. The side panel 30D is provided with fixing brackets 2a and 2a for receiving bolts 2b for connecting the indoor unit 3 and the dehumidifier 5 placed on the indoor unit 3 to suspend the air conditioning unit 2 from the ceiling surface. The four hanging brackets 28 are provided. The air conditioning unit 2 is provided by being inserted into a mounting opening provided on the ceiling surface 101 (see FIG. 7) from the indoor side, and is, for example, a ceiling cassette type (ceiling embedded type) disposed in the space of the ceiling back 7. It is an air conditioning unit. The suspension fitting 28 is supported by suspension bolts 102 (see FIG. 7) that hang down from, for example, the beam 103 on the back of the ceiling, and thereby the air conditioning unit 2 is fixed in the space of the ceiling 7. The housing 30 is arranged so that the decorative panel 30 </ b> B that forms the lower surface can be attached in close contact with the ceiling surface 101. The indoor unit 3 may be a four-way ceiling cassette type that blows air in four directions, or may be a two-way ceiling cassette type that blows air in two directions.

The decorative panel 30B includes an indoor air inlet 31 for taking in indoor air at the center thereof. The indoor air inlet 31 may have a filter 34. Around the room air inlet 31, there are four elongated outlets 32 formed to blow out the air after heat exchange along the side of the decorative panel 30B. Each blower outlet 32 is provided with a flap 33 that can adjust the direction of the blown air.
Corner panels 35 are provided at the four corners of the decorative panel 30B so as to be removable toward the lower side of the decorative panel 30B. The corner panel 35 is formed in such a size that the attachment operator's hand can reach the engagement position between the suspension fitting 28 and the suspension bolt 102 when the corner panel 35 is removed.

The case 50 of the dehumidifier 5 includes a side panel 50 </ b> A that forms four sides of the case 50. The case 50 also includes a side panel 50D formed by chamfering the four corners of the case 50. The side panel 50 </ b> D is provided with fixing brackets 2 a and 2 a that receive bolts 2 b that connect the indoor unit 3 and the dehumidifier 5.
One surface 50B of the side panel 50A is provided with an in-wall outlet 55 through which the dehumidified air heat-exchanged by the dehumidifying heat exchanger 51 is blown. The in-wall outlet 55 is provided with an outlet grill 55A. A surface 50C different from the surface 50B provided with the in-wall outlet 55 is provided with an in-wall air inlet 56 for taking in air from the in-wall space 80.

  As shown in FIG. 6, the in-wall air inlet 56 is formed on each of three surfaces 50C, 50C, and 50C other than the surface 50B on which the in-wall outlet 55 is provided. The in-wall outlet 55 is provided with a dehumidifying blower 52. The dehumidifying blower 52 includes a fan motor 52a and a propeller fan 52b attached to the rotation shaft of the fan motor 52a. For example, a plurality of dehumidifying fans 52 may be provided side by side at the in-wall outlet 55. The number of blowers 52 for dehumidification can be determined according to the size of the space in the wall where dehumidification is performed. Thereby, for example, when dehumidifying the inside of a large wall space, a plurality of dehumidifying fans 52 are arranged side by side, and the dehumidified air can be circulated in the wall space 80 efficiently.

Inside the dehumidifier 5, a heat exchanger 51 for dehumidification formed by being bent into a substantially U shape in a plan view is provided. The dehumidifying heat exchanger 51 is disposed along the surfaces 50C, 50C, and 50C. The dehumidifying heat exchanger 51 is provided so as to be separated from each surface 50C by a predetermined distance. The dehumidifying heat exchanger 51 is placed on a drain pan (first drain pan) 54 disposed on the lower surface 23 of the case 50. One end of a partition plate 51B having substantially the same height as the height of the dehumidifying heat exchanger 51 is fixed to each tube plate 51A, 51A of the dehumidifying heat exchanger 51. The other end of the partition plate 51B is fixed to the surface 50B along the in-wall outlet 55.
When the propeller fan 52b is rotated by the fan motor 52a, the ambient air around the dehumidifier 5 is sucked into the dehumidifier 5 from the air intake ports 56A, 56B, and 56C in each wall due to the negative pressure. The air sucked in the directions of the arrows Y1, Y2, Y3 in the drawing from the respective wall air inlets 56A, 56B, 56C is heat-exchanged by the heat exchanger 51 for dehumidification and cooled. Since the humidity in the air is condensed by being cooled, the air after heat exchange is in a low humidity state. Thus, the dehumidified air is blown out from the in-wall outlet 55 in the direction of arrow Y4 in the figure by the dehumidifying blower 52.

The in-wall air inlets 56A, 56B, and 56C may be configured by knockout holes formed in the side panel 50C that can be arbitrarily opened. Alternatively, the wall air inlets 56A, 56B, and 56C may be provided with a shutter that can be opened and closed, and the wall air inlets 56A, 56B, and 56C in any direction may be opened and used. According to this configuration, since the air suction direction can be changed, the wind flow direction can be changed depending on the installation position of the dehumidifier 5 or the size and direction of the room. Therefore, for example, when the in-wall air suction port 56A is arranged close to a wall or the like, the in-wall air suction port 56A can be closed and air can be sucked from the in-wall air suction ports 56B and 56C. . According to this configuration, by closing the in-wall air inlet 56A, the negative pressure in the in-wall air inlets 56B and 56C increases. Therefore, it is possible to efficiently suck air from the in-wall air suction ports 56B and 56C that are not close to the wall.
Further, since the heat exchanger 51 for dehumidification is arranged with a space between the air inlets 56A, 56B and 56C in the walls, for example, even when the air inlet 56A in the wall is closed, the dehumidifier 5 The air sucked into the air flows into the dehumidifying heat exchanger 51 from the interval between the in-wall air inlet 56A and the dehumidifying heat exchanger 51. Therefore, the air can be efficiently dehumidified without wasting the heat exchange area of the portion facing the in-wall air suction port 56A.
Further, since the partition plate 51B is provided between the tube plate 51A of the dehumidifying heat exchanger 51 and the in-wall outlet 55, the dehumidifying heat exchanger 51 and the in-wall air inlets 56A, 56B, 56C Even if there is a gap between the two, the air sucked into the dehumidifier 5 can be dehumidified through the heat exchanger 51 for dehumidification and blown out into the wall space 80.

As shown in FIG. 7, the water condensed in the dehumidifying heat exchanger 51 is collected in the drain pan 54. A drain tube (drain pipe) 58 is connected to the drain pan 54 to allow the drain water collected by the drain pan 54 to flow to the drain pan (second drain pan) 24 provided in the indoor unit 3. The drain tube 58 is extended from the drain pan 54 of the dehumidifier 5 to the indoor unit 3 through the lower surface 23 of the case 50 and the hole 58 </ b> A passing through the top panel 30 </ b> A of the housing 30, and drain water is supplied to the drain pan 24. It is configured to guide.
A motor base 26 is suspended between the top surface 25 and the lower surface 23 of the case 50. A fan motor 52 a of a dehumidifying blower 52 is fixed to the motor base 26.

A motor 22 a is fixed to the lower surface of the top panel 30 </ b> A of the housing 30, and an impeller 22 b is attached to the shaft of the motor 22 a to constitute the blower 22. The blower 22 is configured to suck air from the rotation axis direction through the suction port 31 and blow it out in the circumferential direction with rotation. Around the blower 22, an indoor heat exchanger 21 bent into a substantially square shape is disposed so as to surround the blower 22. Further, a heat insulator 27 made of, for example, styrene foam is provided on the inner surfaces of the side panel 30C and the side panel 30D. Further, the heat insulator 27 is also provided on the inner surface of the dehumidifier 5.
When the indoor unit 3 sucks indoor air from the suction port 31 by the blower 22 as indicated by an arrow X in the figure, the indoor unit 3 exchanges heat with the refrigerant flowing in the indoor heat exchanger 21, and after heat exchange Is blown out from the air outlet 32 and supplied into the conditioned room for air conditioning in the conditioned room.

  The indoor heat exchanger 21 is fixed in a state where it is placed on a drain pan (second drain pan) 24 disposed along the outer periphery of the indoor air suction port 31. The drain pan 24 is made of, for example, foamed polystyrene. Four outlets 32 are formed along the four sides on the outer periphery of the drain pan 24. The drain pan 24 is provided with a drain pump (not shown) for pumping the drain water stored in the drain pan 24 and discharging it to the outside of the air conditioning unit 2 at a position corresponding to one corner of the indoor heat exchanger 21. . The drain water that has flowed from the drain pan 54 of the dehumidifier 5 to the drain pan 24 of the indoor unit 3 through the drain tube 58 is also discharged outside the air conditioning unit 2 through this drain pump.

  The dehumidifier 5 is operated under the control of the control unit 60, during the cooling operation of the indoor unit 3, or when the indoor unit 3 is thermo-off. The dehumidifier 5 sucks the air in the wall space containing moisture into the dehumidifier 5, condenses the moisture in the air with the heat exchanger 51 for dehumidification, and dehumidifies the air whose humidity has decreased into the wall space again. Repeat the blowing cycle. As a result, dehumidification of the space in the wall is performed. The dehumidifying blower 52 may be configured to be rotated in order to circulate the air in the wall space, for example, other than during the dehumidifying operation of the dehumidifier 5.

  The load of the dehumidifying operation of the dehumidifier 5 may be adjusted according to the load state of the cooling operation of the indoor unit 3. This is because the amount of refrigerant flowing through the indoor heat exchanger 21 and the amount of refrigerant flowing through the dehumidifying heat exchanger 51 are controlled by the controller 60 with the opening degree of the first mechanical valve 29 and the second mechanical valve 53, respectively. It becomes possible. For example, when the air-conditioning unit 2 is thermo-off, the first mechanical valve 29 is closed, the second mechanical valve 53 is opened, the refrigerant flows through the dehumidifying heat exchanger 51, and only the dehumidifying operation of the wall space 80 can be performed. Even during the cooling operation of the air conditioning unit 2, for example, when the load on the indoor unit 3 is high, the opening of the second mechanical valve 53 is reduced to reduce the amount of refrigerant flowing through the dehumidifying heat exchanger 51, It is possible to operate so as not to lower the air conditioning efficiency in the harmony room 4. Further, when the air conditioner unit 2 is in cooling operation and the indoor unit 3 has a surplus capacity, the opening degree of the first mechanical valve 29 is reduced, the second mechanical valve 53 is opened, and the dehumidification efficiency of the wall space 80 is increased. Can be increased.

  As described above, according to the present embodiment, the indoor unit 3 that performs air conditioning of the conditioned room 4 and the dehumidifier 5 that performs dehumidification of the wall space 80 are integrated into the air conditioning unit 2 to form the indoor unit 3. Because the indoor heat exchanger 21 and the dehumidifying heat exchanger 51 of the dehumidifier 5 are connected to the same refrigerant system, the air conditioning unit 2 including the dehumidifier 5 that dehumidifies the interior space of an existing building, for example, Can be installed easily. Furthermore, by branching the refrigerant of the indoor unit 3 and flowing it to the dehumidifier 5 side, the air conditioning of the conditioned room 4 and the dehumidification of the wall space 80 can be efficiently performed simultaneously with one air conditioning unit 2.

  Further, according to the present embodiment, the air conditioning unit 2 in which the dehumidifier 5 is integrated with the ceiling-embedded indoor unit 3 is supported on the ceiling by the suspension bolt 102, so that the space behind the ceiling is effectively used. Thus, the dehumidifier 5 can be installed. Since the dehumidifier 5 is integrated with the indoor unit 3, it can be easily installed. Moreover, since the air conditioning unit 2 is embedded and arranged in the ceiling, it is possible to improve the aesthetic appearance.

  Moreover, since the dehumidifier 5 is mounted on the upper surface of the indoor unit 3, the air conditioning unit 2 can be installed without widening the opening for installing the indoor unit 3 formed on the ceiling surface of the conditioned room 4. Can do. Furthermore, since the dehumidifying heat exchanger 51 is disposed on the first drain pan 54 disposed on the lower surface of the dehumidifier 5, even if the dehumidifier 5 is placed on the upper surface of the indoor unit 3, dehumidifying heat exchange is performed. The drain water generated from the vessel 51 does not drop directly on the indoor unit 3.

  Further, the drain pipe of the first drain pan 54 communicates with the drain pan 24 of the indoor unit 3, and the drain water from the air conditioning unit 2 is discharged to the outside of the air conditioning unit 2 through the drain pan 24. It is possible to prevent drain water from dripping into the conditioned room 4. Further, it is not necessary to attach a drain pump or the like for drain water drainage to the dehumidifier 5 separately from the indoor unit 3, and the drain water generated from the dehumidifier 5 is efficiently combined with the drain water generated from the indoor unit 3. 2 can be discharged to the outside.

  Further, the dehumidifier 5 includes a blower outlet 55 formed on one side surface of the substantially box-shaped case 50 and suction ports 56 formed on the remaining three surfaces, and the plane substantially U-shaped along the suction port 56. A dehumidifying heat exchanger 51 was disposed, and a dehumidifying blower 52 was provided at the outlet 55. Therefore, high-humidity air in the wall space 80 can be sucked and dehumidified from multiple directions, and the dehumidification efficiency of the wall space 80 can be improved. Further, since the air outlet 55 is formed on a different surface from the air inlet 56, the low-humidity air blown out from the air outlet 55 can be prevented from being directly sucked into the air inlet 56. The dehumidifying efficiency of the space 80 can be improved.

  The air conditioning unit 2 includes a first mechanical valve 29 disposed on the refrigerant inlet side of the indoor heat exchanger 21 and a second mechanical valve 53 disposed on the refrigerant inlet side of the dehumidifying heat exchanger 51. The amount of refrigerant flowing through the indoor heat exchanger 21 and the amount of refrigerant flowing through the dehumidifying heat exchanger 51 can be adjusted by changing the opening of the first mechanical valve 29 and the second mechanical valve 53, respectively. The wall space 80 can be efficiently dehumidified according to the load of the unit 2, and the energy saving effect can be enhanced.

  In addition, the dehumidifier 5 is attached to the indoor unit 3 to be integrated into an air conditioning unit, and the connection port 120 for connecting the indoor unit 3 and the dehumidifier 5 to the refrigerant pipe 10 in parallel is provided. As a result, it can be retrofitted optionally, and the versatility of the air conditioner 100 is improved.

  Moreover, since the dehumidifier 5 and the indoor unit 3 are connected by a connector, the indoor unit 3 and the dehumidifier 5 can be formed separately from each other, and the assembly workability of the air conditioning unit 2 can be improved. By connecting each other with a screw, they can be arranged integrally, and the mounting workability is also improved.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to this. In the present embodiment, the first mechanical valve (first control valve) 29 and the second mechanical valve (second control valve) 53 are configured by mechanical valves, but are not limited thereto, and are configured by electromagnetic valves. May be. Of course, other details and the like can be arbitrarily changed.

1 Outdoor unit 2 Air conditioning unit 2b Bolt (screw)
3 Indoor unit 4 Room to be conditioned 5 Dehumidifier 10 Refrigerant piping (first refrigerant piping)
17a, 17b T joint 20 Housing 20a Side panel 21 Indoor heat exchanger 22 Blower 24 Drain pan (second drain pan)
28 Hanging bracket 29 First mechanical valve (first control valve)
31 Air inlet (Indoor air inlet)
32 Air outlet 50 Wall space 51 Heat exchanger for dehumidification 52 Blower (dehumidifier sending machine)
53 Second mechanical valve (second control valve)
54 Drain pan (first drain pan)
55 Air outlet (wall outlet)
56 Suction port (inside wall air suction port)
58 Drain tube (drain piping)
60 control unit 100 air conditioning system

Claims (8)

An air conditioner that can dehumidify the space in the wall at the same time during cooling operation to cool the conditioned room,
An indoor unit that is installed with the inlet and the outlet toward the conditioned room and a dehumidifier that is installed with the inlet and the outlet in the wall space are integrated into an air conditioning unit, and the indoor unit An air conditioner in which the indoor heat exchanger and the dehumidifying heat exchanger of the dehumidifier are connected to the same refrigerant system.   2. The interior space is a ceiling, the indoor unit is a ceiling-embedded air conditioner, and the integrated air conditioning unit is supported on the ceiling by a suspension bolt. The air conditioning apparatus described in 1.   The dehumidifier overlaps with an upper surface of the indoor unit, the dehumidifier has a first drain pan on a lower surface, and the heat exchanger for dehumidification is placed on the first drain pan. Item 3. The air conditioner according to Item 1 or 2.   The drain pipe of the drain pan communicates with a second drain pan of the indoor unit, and drain water from the air conditioning unit is discharged to the outside of the air conditioning unit through the second drain pan. 3. The air conditioning apparatus according to 3.   The dehumidifier includes a substantially box-shaped housing, and the housing includes a blow-out port formed on one side of the side surface of the housing and suction ports formed on the remaining three surfaces, and the suction port includes An air conditioner according to any one of claims 1 to 4, wherein a dehumidifying heat exchanger having a substantially U-shaped plane is disposed along the air outlet, and a dehumidifying blower is provided at the outlet. .   The air conditioning unit includes a first control valve disposed at a refrigerant inlet of the indoor heat exchanger and a second control valve disposed at a refrigerant inlet of the dehumidifying heat exchanger. The air conditioning apparatus according to any one of 1 to 5.   The air conditioner according to any one of claims 1 to 6, wherein the dehumidifier can be connected to the refrigerant system in a retrofit in parallel with the indoor unit via a connection port. .   The air conditioner according to any one of claims 1 to 7, wherein the dehumidifier and the indoor unit are connected by a connector.

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