KR20100032198A - Indoor unit of airconditioner - Google Patents

Indoor unit of airconditioner Download PDF

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Publication number
KR20100032198A
KR20100032198A KR1020080091239A KR20080091239A KR20100032198A KR 20100032198 A KR20100032198 A KR 20100032198A KR 1020080091239 A KR1020080091239 A KR 1020080091239A KR 20080091239 A KR20080091239 A KR 20080091239A KR 20100032198 A KR20100032198 A KR 20100032198A
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KR
South Korea
Prior art keywords
refrigerant
heat exchanger
cooling
outlet pipe
subcooled
Prior art date
Application number
KR1020080091239A
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Korean (ko)
Inventor
이상호
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020080091239A priority Critical patent/KR20100032198A/en
Publication of KR20100032198A publication Critical patent/KR20100032198A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

PURPOSE: An air-conditioner including a super-cooling apparatus is provided to improve heat transfer efficiency of a super cooling plate type heat exchanger. And obtain an efficient super-cooling operation. CONSTITUTION: An air-conditioner including a super-cooling apparatus comprises a super-cooling plate type heat exchanger(71), a by-pass inlet pipe, a super-cooling expansion valve, and a bypass outlet pipe(84). The super-cooling plate type heat exchanger comprises a refrigerant flow pipe, a cooling pathway, and a heat exchanging plate(75). A refrigerant condensed in an outdoor heat exchanger passes through the refrigerant flow pipe. A refrigerant heat-exchanging the refrigerant of the cooling pathway passes through the cooling pathway. The by-pass inlet pipe is connected with the refrigerant flow pipe. The super-cooling expansion valve is connected to the by-pass inlet pipe. The bypass outlet pipe connects the super-cooling expansion valve and the cooling pathway. The bypass outlet pipe comprises a splitter including plural distribution holes while distributing the refrigerant. The splitter is inserted to the inside of the super-cooling plate type heat exchanger.

Description

 Air Conditioner {Indoor unit of airconditioner}

 The present invention relates to an air conditioner, and more particularly, to an air conditioner having a supercooling device for supercooling a refrigerant having passed through an outdoor heat exchanger.

 In general, an air conditioner is installed for the purpose of cooling / heating indoor air or purifying air to create a more comfortable indoor environment for humans.

In the air conditioner, a compressor, a condenser, an expander, an evaporator, and the like are connected to a refrigerant pipe, and the refrigerant cools or heats the room while circulating the compressor, the condenser, the expander, and the evaporator.

The air conditioner as described above, the cooling efficiency is improved when the refrigerant condensed in the outdoor heat exchanger is improved, and Patent Publication No. 10-2007-0009081 discloses a super-cooling device of a multi-type air conditioner to supercool the refrigerant passing through the outdoor heat exchanger Is disclosed. The subcooler is installed in the main pipe for guiding the refrigerant discharged from the outdoor heat exchanger to the indoor heat exchanger, the subcooler installed in the main pipe, the bypass pipe connecting the main pipe and the supercooler of the indoor heat exchanger, and the bypass pipe. And an electronic expansion valve for expanding the liquid refrigerant bypassed from the main pipe, and a recovery pipe for connecting the supercooler and the accumulator inlet side.

In the air conditioner having the supercooling device as described above, when the compressor is driven during the cooling operation, the refrigerant compressed in the compressor is condensed in the outdoor heat exchanger and then passes through the main pipe, and some of the refrigerant passing through the main pipe is connected to the main pipe. It enters the bypass pipe and expands in the electromagnetic expansion valve. The refrigerant expanded in the electromagnetic expansion valve flows into the supercooler, cools the refrigerant passing through the main pipe, and is supplied to the accumulator through a bypass pipe connected to the suction side of the accumulator.

 In addition, Korean Patent Laid-Open Publication No. 10-2008-0058782 discloses a multi-type air conditioner equipped with a plate-type and a cooler.

The plate-and-cooler has a plurality of diaphragms disposed therein, the refrigerant condensed in the outdoor heat exchanger flows in front of the diaphragm, and the refrigerant expanded in the subcooling expansion valve flows in the rear of the diaphragm.

 However, when the refrigerant expanded in the subcooled expansion valve of the air conditioner according to the prior art is concentrated to a part of the plurality of partitions and the amount of the refrigerant flowing to the rest of the plurality of partitions is small, the heat transfer performance of the entire plate and the cooler is low and the refrigerant is sufficiently There is a problem that can not be supercooled.

The present invention has been made to solve the above problems of the prior art, the object of the present invention is to provide an air conditioner capable of efficient supercooling because the heat transfer efficiency of the subcooled plate heat exchanger is high.

In the air conditioner according to the present invention for solving the above problems, the refrigerant passage through which the refrigerant condensed in the outdoor heat exchanger passes, and the cooling passage through which the refrigerant passing through the refrigerant in the refrigerant passage passes is partitioned by a heat exchange plate. A subcooled plate heat exchanger having a plurality of refrigerant passages and cooling passages formed by a plurality of heat exchange plates; A bypass inlet tube connected to a refrigerant pipe through which the refrigerant flowing out of the refrigerant passage passes, a subcooled expansion valve connected to the bypass inlet tube, and a bypass outlet tube connecting the subcooled expansion valve to the cooling passage; The bypass outlet pipe has a distribution part inserted into the subcooled plate heat exchanger and having a plurality of distribution holes formed therein for distributing refrigerant into the plurality of refrigerant flow paths.

The bypass outlet pipe is blocked at the distal end of the distribution part.

The bypass outlet pipe is formed such that each of the distribution holes corresponds to each of the refrigerant passages.

The subcooled plate heat exchanger is formed by protruding a bypass outlet pipe connection part connected to the bypass outlet pipe, and the bypass outlet pipe is positioned such that the distribution part passes through the bypass outlet pipe connection part and is located inside the subcooled plate heat exchanger. Is installed.

Since the air conditioner according to the present invention configured as described above is passed evenly through the refrigerant passage of the subcooled plate heat exchanger, the refrigerant bypassed is evenly distributed into a plurality of cooling passages of the subcooled plate heat exchanger, and thus the heat exchange performance of the subcooled plate heat exchanger is high. This has the advantage of allowing more efficient subcooling.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an embodiment of an air conditioner according to the present invention, Figure 2 is a schematic configuration diagram of the outdoor unit shown in FIG.

As shown in FIG. 1, the air conditioner according to the present embodiment is a multi-type air conditioner including a plurality of indoor units 1 to 8 and an outdoor unit 10 connected to the plurality of indoor units 1 to 8. It consists of a heat pump type | mold multi type air conditioner which cooling and heating are selectively performed.

In the plurality of indoor units 1 to 8 and the outdoor unit 10, the liquid pipe 15 through which the liquid refrigerant passes and the gas pipe 16 through which the gas refrigerant passes are connected in parallel.

Each of the plurality of indoor units 1 to 8 includes an indoor heat exchanger 11 for cooling or heating indoor air while the refrigerant heats up with the indoor air, and an indoor heat exchanger 11 by sucking indoor air into the indoor units 1 to 8. ) And an indoor blower (12) for discharging to the outside of the indoor units (1 to 8) after the heat exchange is performed, and an indoor expansion mechanism (13) for expanding the refrigerant flowing toward the indoor heat exchanger (11).

The indoor expansion mechanism 13 is composed of an electronic expansion valve such as LEV or EEV capable of controlling the expansion of the refrigerant.

The outdoor unit 10 shown in FIG. 2 includes compressors 22, 24 and 26, an outdoor heat exchanger 40, an outdoor blower 44, an outdoor expansion mechanism 50, and cooling / heating switching. A valve 60.

Compressors 22, 24 and 26 compress the refrigerant, and a plurality of refrigerant passages are connected in parallel.

One of the compressors 22, 24 and 26 is made of a variable displacement compressor 22, such as an inverter compressor, and the rest is made of a constant speed compressor 24, 26.

The compressors 22, 24 and 26 are connected to one common accumulator 27 at the suction side, and oil separators 28, 29 and 30 and the check valve 31 (at each discharge side thereof). 32) 33 are installed.

 The outdoor heat exchanger 40 acts as a condenser during the cooling operation and functions as an evaporator during the heating operation and the defrosting, and a coolant flow path 42 through which the refrigerant flows is formed.

An outdoor blower 44 is installed around the outdoor heat exchanger 40 to flow outdoor air to the outdoor heat exchanger 40.

The outdoor blower 44 includes an outdoor fan motor 46 and an outdoor fan 48 installed in the outdoor fan motor 46.

The outdoor expansion mechanism 50 does not expand the refrigerant when the refrigerant passing through the outdoor heat exchanger 40 passes, and expands the refrigerant when the refrigerant passes toward the outdoor heat exchanger 40. 40 is installed between the refrigerant passage 42 and the indoor expansion mechanism 13, and consists of an outdoor expansion valve 52, such as LEV or EEV, and a check valve 54 connected in parallel, or a LEV or EEV, or the like. It consists of an outdoor expansion valve (52).

The cooling / heating switching valve 60 allows the refrigerant compressed in the compressors 22, 24, and 26 to flow to the outdoor heat exchanger 40 during the cooling operation, and the refrigerant passing through the indoor heat exchanger 11 It is allowed to flow toward the compressors 22, 24 and 26, and during the heating operation, the refrigerant compressed in the compressors 22, 24 and 26 is flowed to the indoor heat exchanger 11, and the outdoor heat exchanger ( The refrigerant passing through the 40 is allowed to flow toward the compressors 22, 24, 26, and the compressors 22, 24, 26, the outdoor heat exchanger 40, and the indoor heat exchanger 11. And the accumulator 27.

On the other hand, the liquid pipe 15 between the outdoor heat exchanger 40 and the indoor expansion mechanism 13 is provided with a supercooling device 70 for supercooling the refrigerant condensed in the outdoor heat exchanger 40 during the cooling operation of the air conditioner. .

The subcooler 70 passes through the outdoor heat exchanger 40 during the cooling operation so that the condensed refrigerant is subcooled before being expanded in the indoor expansion device 13, and thus the liquid pipe 15, in particular, the outdoor expansion device 50 and the indoor expansion device. It is installed in the liquid pipe between (13).

As shown in FIG. 2, the subcooler 70 includes a subcool plate heat exchanger 71, a subcool bypass channel 80, a subcool expansion valve 90, and a refrigerant recovery pipe 100.

3 is an enlarged exploded perspective view of the subcooled plate heat exchanger shown in FIG. 2, and FIG. 4 is a cross-sectional view of an essential part when the bypass outlet tube illustrated in FIG. 3 is installed in the supercooled plate heat exchanger.

The supercooled plate heat exchanger 71 includes a housing 72 that forms its exterior, and a heat exchange plate 75 provided inside the housing 72.

The housing 72 is composed of the front housing 73 and the rear housing 74, and a plurality of heat exchange plates 75 are disposed in the space formed by the front housing 73 and the rear housing 74.

In the housing 72, the front housing 73 and the rear housing 74 have a liquid pipe connection portion 73a, 73b to which the liquid pipe 15 is connected, and the bypass flow path 80 is connected to one of the two housings. Pass flow path connecting portions 73c and 73d are formed together.

The supercooled plate heat exchanger (71) is installed in the common accumulator (27), wherein one of the front housing (73) and the rear housing (74) is installed opposite the common accumulator (27), and the liquid pipe is connected to the other. The connection parts 73a and 73b and the bypass flow path connection parts 73c and 73d protrude.

The subcooled plate heat exchanger 71 is a portion of the front housing 73 and the rear housing 74 that is not facing the common accumulator 27 and connects the liquid pipe connecting portions 73a and 73b and the bypass flow passage connecting portions 73c and 73d. ) Is formed, and the liquid pipe connection parts 73a and 73b and the bypass flow path connection parts 73c and 73d will be described later in detail.

The plurality of heat exchange plates 75 are formed with through holes 75a in each of the four corner portions.

The plurality of heat exchange plates 75 is provided with a surface contact portion 76b which is in surface contact with another heat exchange plate adjacent to two portions spaced in a diagonal direction among four corner portions, and the surface contact portion 76b includes a plurality of heat exchange plates 75. In turns are formed in opposite positions.

That is, any one of the plurality of heat exchange plates 75 has a surface contact portion 76b formed at an upper left side and a lower right side thereof, and the other ones positioned before and after the heat exchange plate 75 having the surface contact portions 76b as described above. On the contrary, the surface contact portion 76b is formed at the lower left side and the upper right side of the heat exchange plate.

The supercooled plate heat exchanger 71 includes a refrigerant passage 76 through which the refrigerant condensed in the outdoor heat exchanger 40 passes through the housing 72, and a cooling passage through which a refrigerant for cooling the refrigerant in the refrigerant passage 76 passes. 77 is formed, and the coolant flow path 76 and the cooling flow path 77 are alternately formed with the heat exchange plate 75 interposed therebetween.

That is, in the supercooled plate heat exchanger 71, the refrigerant of the refrigerant passage 76 contacts one surface of the heat exchange plate 75, and the refrigerant of the cooling passage 77 contacts the other surface of the heat exchange plate 75. The 76 and the cooling passage 77 are alternately formed in the housing 72 in the order of the refrigerant passage 76-the cooling passage 77-the refrigerant passage 76-the cooling passage 77.

The supercooled plate heat exchanger (71) has a refrigerant passage (76) connected to the liquid pipe (15) between the outdoor heat exchanger (40) and the indoor expansion mechanism (13), and the cooling passage (77) is the bypass passage (80) and It is connected to the refrigerant recovery pipe 100.

The liquid pipe 15 between the outdoor heat exchanger 40 and the indoor expansion mechanism 13 has one end outdoors so that the refrigerant passing through the outdoor expander port 50 flows into the refrigerant flow path 76 of the supercooled plate heat exchanger 71. The subcooling inlet pipe 15a connected to the expansion mechanism 50 and connected to the refrigerant passage 76 of the subcooled plate heat exchanger 71 and the refrigerant passage 76 of the subcooled plate heat exchanger 71. One end is connected to the refrigerant passage 76 of the subcooled plate heat exchanger 71 and the other end is connected to the indoor expansion mechanism 13 so that the refrigerant flows into the indoor expansion mechanism 13.

 The subcooling bypass flow path 80 allows a part of the refrigerant that has passed through the refrigerant flow path 76 of the subcool plate heat exchanger 71 to flow into the cooling channel 77 of the subcool plate heat exchanger 71. Some of the refrigerant passing through the outlet pipe 15b is connected to enter the cooling channel 77 of the supercooled plate heat exchanger 71.

The subcooling bypass flow path 80 is a bypass inlet pipe 82 connected to the subcooling outlet pipe 15b which is a refrigerant pipe through which the refrigerant flowing out of the refrigerant path 76 of the subcooled plate heat exchanger 71 passes. And a bypass outlet pipe 84 connecting the valve 90 and the cooling channel 77 of the supercooled plate heat exchanger 71.

The subcooled expansion valve 90 is installed in the subcooled bypass flow path 80 and expands the refrigerant bypassed into the subcooled bypass flow path 80 to low temperature and low pressure. The bypass inlet pipe 82 and the bypass outlet pipe ( 84) is connected.

That is, the refrigerant flowing out from the refrigerant passage 76 of the subcooled plate heat exchanger 71 to the subcooled plate heat exchanger-indoor expansion mechanism connecting pipe 15b flows into the bypass inlet pipe 82 and then the subcooled expansion valve 90 ), And then passes through the bypass outlet pipe 84 to the cooling passage 77 of the supercooled plate heat exchanger 71.

The refrigerant recovery pipe 100 passes through the cooling channel 77 of the subcooled plate heat exchanger 71 while the refrigerant that cools the refrigerant in the refrigerant channel 76 of the subcooled plate heat exchanger 71 is the compressor 22, 24. And one end is connected to the cooling channel 77 of the supercooled plate heat exchanger 71, and the other end is connected to the refrigerant pipe between the cooling / heating switching valve 60 and the accumulator 27, It is directly connected to the accumulator 27.

That is, the subcooling device 70 includes a bypass passage 80, a subcool expansion valve 90, a cooling passage 77 of the subcool plate heat exchanger 71, and the refrigerant recovery pipe 100. Some of the refrigerant passing through the refrigerant passage 76 of 71 functions as an indoor unit bypass passage for bypassing the indoor expansion mechanism 13 and the indoor heat exchanger 11.

On the other hand, the subcooled plate heat exchanger (71) is a subcooling inlet pipe connection (73a) is connected to the subcooling inlet pipe (73a) and the subcooling inlet pipe (15b) is connected to the liquid pipe connection (73a, 73b) A bypass outlet pipe connection part 73c, which is composed of a 73b and a bypass flow path connection part 73c, 73d is connected to the bypass outlet pipe 84, and a refrigerant recovery pipe connected to the refrigerant recovery pipe 100; It consists of a connection part 73d.

The subcooled plate heat exchanger (71) is formed such that the subcooled inlet pipe connection (73a) and the subcooled outlet pipe connection (73b) are spaced in a diagonal direction, and the bypass outlet pipe connection (73c) and the refrigerant recovery pipe connection (73d) are diagonal. It is formed spaced apart in the direction.

That is, when the subcooled plate heat exchanger (71) is formed on the lower left side of the front surface of the subcooled plate heat exchanger (71), the subcooled outlet pipe connection (73b) of the subcooled plate heat exchanger (71) It is formed on the front upper right side, the bypass outlet pipe connection portion 73c is formed on the front upper left side of the supercooled plate heat exchanger (71), and the refrigerant recovery pipe connection portion (73d) is the front lower right of the supercooled plate heat exchanger (71). Is formed.

On the other hand, the supercooling device 70 as described above is subcooled when the refrigerant flowing from the bypass outlet pipe 84 to the cooling channel 77 of the subcooled plate heat exchanger 71 is evenly distributed into a plurality of the refrigerant channel 77. The heat transfer performance of the plate heat exchanger 71 is improved, the subcooling is efficiently carried out, and the bypass outlet pipe 84 has a distribution unit 86 for distributing the refrigerant to the plurality of cooling passages 77.

The distribution unit 86 is inserted into the subcooled plate heat exchanger 71, and a plurality of distribution holes 88 for distributing the refrigerant to the plurality of refrigerant passages 76 are formed at the periphery thereof.

The bypass outlet pipe 84 is inserted into the bypass outlet pipe connection portion 73c of the subcooling plate heat exchanger 71, and the bypass outlet pipe 84 passes through the bypass outlet pipe connection portion 73c. The plurality of through holes 75a positioned at the rear of the connection portion 73c are disposed to penetrate through each of the distribution holes 88 in the state in which the distribution parts 86 are disposed orthogonal to the heat exchange plate 75. 76 are formed corresponding to each.

The bypass outlet pipe 84 has a structure in which an end portion 89 of the distribution portion 86 is blocked so that the refrigerant flows out into the plurality of cooling flow paths 77 only through the plurality of distribution holes 88, which are peripheral portions of the distribution portion 86. Is made of.

That is, in the bypass outlet pipe 84, the distribution part 86 passes through the bypass outlet pipe connection part 73c and is positioned inside the subcooled plate heat exchanger 71, and the plurality of distribution holes 88 are arranged in the subcooled plate heat exchanger. The refrigerant is supplied in a state located inside the machine 71.

Looking at the operation of the present invention configured as described above are as follows.

First, during the cooling operation, the compressors 22, 24 and 26 are driven, and the high-pressure and high-pressure gaseous refrigerant is discharged from the compressors 22, 24 and 26. The refrigerant discharged from the compressors (22), (24) and (26) is separated from the oil in the oil separators (28), (29) and (30), and then passes through the cooling / heating switching valve (60) to the outdoor heat exchanger (40). Inflow. The refrigerant introduced into the outdoor heat exchanger 40 is condensed by being exchanged with outdoor air while passing through the outdoor heat exchanger 40.

The refrigerant condensed in the outdoor heat exchanger 40 as described above passes through the outdoor expansion mechanism 50 without expansion and flows into the supercooled inlet pipe 15a.

The refrigerant introduced into the subcooling inlet pipe 15a is introduced into the subcooling device 70 and is supercooled.

Hereinafter, the subcooling process in the subcooling device 70 will be described in detail. The refrigerant flowing into the refrigerant passage 76 of the subcooled plate heat exchanger 71 through the subcooling inlet tube 15a passes through the refrigerant passage 72. Afterwards, it is discharged to the subcooled outlet pipe 15b, and part of the refrigerant discharged to the subcooled outlet pipe 15b flows into the bypass inlet pipe 82 and is expanded to a low temperature and low pressure in the subcooled expansion valve 90, and then the bypass outlet is discharged. Pass through tube 84. Refrigerant flows out from the internal location of the subcooled plate heat exchanger 71 through the plurality of distribution holes 88 in the distribution unit 86 located in the subcooled plate heat exchanger 71 of the bypass outlet pipe 84. It does not flow through the end.

When the refrigerant flows into the plurality of distribution holes 88 as described above, the refrigerant is evenly flowed out into the plurality of cooling flow paths 77 without being concentrated in some of the plurality of cooling flow paths 77, and the supercooled plate heat exchanger 71. The plurality of heat exchanger plates 76 evenly transfer the heat of the refrigerant passage 76 to the refrigerant in the cooling passage 77.

As described above, the refrigerant passing through the plurality of cooling passages 77 absorbs the heat of the refrigerant, is then combined, and is then sucked into the accumulator 27 through the refrigerant recovery pipe 100.

That is, the coolant is supercooled while passing through the coolant flow path 76 of the supercooled plate heat exchanger 71, and the coolant that does not flow to the bypass inlet pipe 82 among the supercooled coolant flows to the indoor expansion mechanism 13 to expand the room. Inflated in the instrument (13).

The refrigerant expanded in the indoor expansion device (13) is evaporated by heat exchange with the indoor air in the indoor heat exchanger (11), and then passes through the cooling / heating switching valve (60) and the refrigerant recovered in the refrigerant recovery pipe (100). Together, they are sucked into the accumulator 27 and are sucked into the compressors 22, 24 and 26.

1 is a perspective view of an embodiment of an air conditioner according to the present invention;

2 is a schematic configuration diagram of the outdoor unit shown in FIG. 1;

3 is an enlarged exploded perspective view of the subcooled plate heat exchanger shown in FIG. 2;

4 is a cross-sectional view of an essential part when the bypass outlet pipe shown in FIG. 3 is installed in a supercooled plate heat exchanger.

<Explanation of symbols on main parts of the drawings>

  11: indoor heat exchanger 13: outdoor expansion device

15: liquid pipe 15a: subcooling inlet pipe

15b: Subcooling outlet pipe 22, 24, 26: Compressor

40: outdoor heat exchanger 50: outdoor expansion mechanism

60: cooling / heating switching valve 70: supercooling device

71: supercooled plate heat exchanger 72: housing

73: front housing 73c: bypass outlet pipe connection

74: rear housing 75: heat exchange plate

76: refrigerant path 77: cooling channel

82: bypass inlet tube 84: bypass outlet tube

86: distribution unit 88: distribution hole

90: subcooled expansion valve 100: oil return piping

Claims (4)

A refrigerant passage through which the refrigerant condensed in the outdoor heat exchanger passes, and a cooling passage through which the refrigerant that heats the refrigerant in the refrigerant passage passes, are partitioned by a heat exchange plate, and the refrigerant passage and the cooling passage are formed by a plurality of heat exchange plates. A supercooled plate heat exchanger formed; A bypass inlet tube connected to a refrigerant pipe through which the refrigerant flowing out of the refrigerant passage passes; A subcooled expansion valve connected to the bypass inlet pipe; And a bypass outlet pipe connecting the subcooled expansion valve and the cooling passage; And the bypass outlet pipe is inserted into the subcooled plate heat exchanger, and has a distribution unit having a plurality of distribution holes for distributing refrigerant to the plurality of refrigerant passages in a circumference thereof.  The method of claim 1, And the bypass outlet pipe is closed at an end of the distribution part.   The method of claim 2, And the bypass outlet pipe is formed such that each of the distribution holes corresponds to each of the refrigerant passages.  The method of claim 1, The subcooled plate heat exchanger is formed by protruding the bypass outlet pipe connection portion connected to the bypass outlet pipe, And the bypass outlet pipe is installed such that the distribution part passes through the bypass outlet pipe connection part and is positioned inside the subcooled plate heat exchanger.
KR1020080091239A 2008-09-17 2008-09-17 Indoor unit of airconditioner KR20100032198A (en)

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KR1020080091239A KR20100032198A (en) 2008-09-17 2008-09-17 Indoor unit of airconditioner

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Application Number Priority Date Filing Date Title
KR1020080091239A KR20100032198A (en) 2008-09-17 2008-09-17 Indoor unit of airconditioner

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KR20100032198A true KR20100032198A (en) 2010-03-25

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KR1020080091239A KR20100032198A (en) 2008-09-17 2008-09-17 Indoor unit of airconditioner

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103851838A (en) * 2012-11-30 2014-06-11 苏州必信空调有限公司 Plate type integrated refrigerant heat recovery circulation system
CN105121992A (en) * 2013-02-14 2015-12-02 舒瑞普国际股份公司 Port opening with supercooling
US10174976B2 (en) 2015-05-06 2019-01-08 Hyundai Motor Company Heat exchanger
CN109780899A (en) * 2017-11-15 2019-05-21 Lg电子株式会社 Heat-exchangers of the plate type and air conditioner with the heat-exchangers of the plate type

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103851838A (en) * 2012-11-30 2014-06-11 苏州必信空调有限公司 Plate type integrated refrigerant heat recovery circulation system
CN103851838B (en) * 2012-11-30 2016-06-15 苏州必信空调有限公司 Board-like integration system cryogen heat-recovery circulating system
CN105121992A (en) * 2013-02-14 2015-12-02 舒瑞普国际股份公司 Port opening with supercooling
CN105121992B (en) * 2013-02-14 2018-03-20 舒瑞普国际股份公司 Opening for supercooling
US10174976B2 (en) 2015-05-06 2019-01-08 Hyundai Motor Company Heat exchanger
CN109780899A (en) * 2017-11-15 2019-05-21 Lg电子株式会社 Heat-exchangers of the plate type and air conditioner with the heat-exchangers of the plate type

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