JP2003139345A - Indoor machine of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of miniaturizing the size by providing a capillary tube in an indoor heat exchanger inside. SOLUTION: This indoor machine for the air conditioner is provided with a first path 5a and a second path 5b, the indoor heat exchanger 5 provided facing to a suction port, retained to a retainer plate 9, and disposed on a drain pan, and an auxiliary decompression device comprising a series circuit of the capillary tube 6 and a check valve 7 provided in a pipe communicating the two paths in the windward in one side of the indoor heat exchanger and a parallel circuit of a solenoid opening/closing valve 8. This indoor machine can perform reheat dry operation using the first path as a cooler and the second path as a reheater by the operation of the auxiliary decompression device. This indoor machine of the air conditioner is formed with a recessed part 11 in one side of the retainer plate and stores the capillary tube in the recessed part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly to an arrangement of capillary tubes.

[0002]

2. Description of the Related Art As shown in FIG. 1, an indoor unit of an air conditioner having a reheat dry circuit includes an outdoor unit 20 having a compressor 1, a four-way valve 2, an outdoor heat exchanger 3 and an electronic expansion valve. 1 depressurizing means 4 is provided, is inserted in the indoor unit 30 between the indoor heat exchanger 5 and the first path 5a and the second path 5b of the indoor heat exchanger 5, and serves as a depressurizing means for reheat drying. A refrigeration cycle is configured by providing a series circuit of a used capillary tube 6 and a check valve 7 for preventing the reverse flow of the refrigerant, and a parallel circuit of an electromagnetic opening / closing valve 8 and sequentially piping these. Then, during the dehumidifying operation, the four-way valve 2 is switched to the cooling operation mode side, the electromagnetic opening / closing valve 8 is closed, and either the first path 5a or the second path 5b of the indoor heat exchanger 5 is evaporated. By using a condenser and the other as a condenser, one evaporator side cools the indoor air to dehumidify it, and the other condenser reheats it to warm the dehumidified cool air and return it to the room. ing. Conventionally, the capillary tube 6
As shown in FIG. 3, the check valve 7 and the solenoid on-off valve 8 are arranged in front and rear between the indoor heat exchanger 5 arranged in the housing 31 of the indoor unit 30 and the suction port. Is installed, especially,
Since the capillary tube 6 is long and arranged in the vicinity of the check valve 7 and the electromagnetic on-off valve 7 in a state of being wound many times, it not only interferes with maintenance, but also the size of the housing 31 in the front-rear direction is large. Therefore, there is a problem that it cannot be miniaturized.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and provides an indoor unit of an air conditioner which can be downsized by providing a capillary tube inside an indoor heat exchanger. Has an aim.

[0004]

In order to solve the above-mentioned problems, the present invention has a first path and a second path, is provided so as to face a suction port, is held by a holding plate, and is a dew tray. An indoor heat exchanger disposed on the above, a series circuit of a capillary tube and a check valve provided in a pipe communicating the two paths on one side of the indoor heat exchanger and on the windward side, and an electromagnetic on-off valve An air conditioner capable of performing a reheat dry operation in which the first path serves as a cooler and the second path serves as a reheater by an operation of the auxiliary pressure reducing device. In this indoor unit, a recess is formed on one side of the holding plate, and the capillary tube is housed in the recess to provide an indoor unit for an air conditioner.

An air conditioner indoor unit is formed by winding a capillary tube housed in the recess.

Further, the indoor unit of the air conditioner is formed by covering the periphery of the capillary tube housed in the recess and wound, with a cushioning material.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An indoor unit of an air conditioner according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a refrigerant circuit diagram of an air conditioner according to the present invention. As shown in FIG. 1, the outdoor unit 20 is provided with a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, and a first pressure reducing unit 4 including an electronic expansion valve.
0 is inserted between the indoor heat exchanger 5 and the first path 5a and the second path 5b of the indoor heat exchanger 5, and the capillary tube 6 used as the decompression means for reheat drying and the refrigerant. Series circuit with check valve 7 to prevent backflow and solenoid valve 8
And a parallel circuit are provided, and these are sequentially piped to form a refrigeration cycle. During the dehumidifying operation, the four-way valve 2 is switched to the cooling operation mode side, the electromagnetic opening / closing valve 8 is closed, and one of the indoor heat exchangers 5 is used as an evaporator and the other is used as a condenser. Thus, the room air is cooled on one evaporator side to be dehumidified, and is reheated on the other condenser side to warm the dehumidified cool air and return it to the room.

FIG. 2 is a perspective view of an essential part showing an embodiment of the indoor unit of the air conditioner according to the present invention. As shown in FIG.
The indoor heat exchanger 5 having a rear sloped portion and a front sloped portion arranged in the housing 31 of the indoor unit 30 is held on both sides by the holding plates 9 made of synthetic resin. It is arranged on a fixed dew tray (not shown). And
A recess 11 is formed on one side of the holding plate 9. On the other hand, the check valve 7 and the electromagnetic on-off valve 8 are arranged on the windward side of the indoor heat exchanger 5, and the capillary tube 6 is housed in the recess 11 in a state of being wound several times. ing. The periphery of the capillary tube 6 housed in the recess 11 is covered with butyryl rubber 12 so that the capillary tube 6 is not exposed to wind.

With the above construction, the capillary tube which has been a hindrance during maintenance in the past is housed in the recesses 11 provided in the holding plates 9 provided on both sides of the indoor heat exchanger 5. In addition to not being a hindrance to time, the dimension of the housing 31 in the front-rear direction can be made shorter than before.

Further, butyryl rubber 1 is provided around the capillary tube 6 housed in the recess 11 of the holding plate 9.
Since 2 is covered, the capillary tube 6 is not directly exposed to the wind, dew does not occur on the capillary tube 6, and the effect of preventing the refrigerant flow noise and abnormal noise generated by the capillary tube 6 is also produced. Can be expected.
Further, the dew generated around the capillary tube 6 is dropped on the dew tray (not shown) and drained, so that there is no problem of water leakage.

[0011]

As described above, according to the indoor unit of the air conditioner of the present invention, the recess is formed on one side of the holding plate for holding the indoor heat exchanger, and the recess is used for reheat drying. Since the capillary tube is accommodated, the capillary tube does not interfere with the maintenance, and the dimension of the indoor unit in the front-rear direction can be made shorter than before.

[Brief description of drawings]

FIG. 1 is a refrigerant circuit diagram of a conventional air conditioner and an air conditioner of the present invention.

FIG. 2 is a perspective view of a main part showing an embodiment of the indoor unit of the air conditioner according to the present invention.

FIG. 3 is a perspective view of a main part showing an indoor unit of a conventional air conditioner.

[Explanation of symbols]

1 compressor 2 four-way valve 3 outdoor heat exchanger 4 First decompression means 5 Indoor heat exchanger 5a 1st pass 5b 2nd pass 6 capillary tubes 7 Check valve 8 solenoid valve 9 holding plate 11 recess 12 Butyryl rubber 20 outdoor unit 30 indoor units 31 housing

Claims (3)

[Claims] 1. An indoor heat exchanger, which has a first path and a second path, is provided so as to face a suction port, is held by a holding plate, and is disposed on a dew tray, and the room. One side of the heat exchanger,
On the windward side, there is an auxiliary depressurizing device that is a parallel circuit of a series circuit of a capillary tube and a check valve provided in a pipe communicating the two paths and a solenoid on-off valve, and by the operation of the auxiliary depressurizing device, An indoor unit of an air conditioner capable of reheat dry operation in which a first path is a cooler and a second path is a reheater, and a recess is formed on one side of the holding plate, and the capillary is provided in the recess. An indoor unit for an air conditioner, characterized by containing a part of a tube. 2. The indoor unit for an air conditioner according to claim 1, wherein a capillary tube housed in the recess is wound. 3. An indoor unit for an air conditioner according to claim 2, wherein a buffer material is coated around the capillary tube housed in the recess and wound.