KR100606277B1 - heat-pump air-conditioner - Google Patents

heat-pump air-conditioner Download PDF

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KR100606277B1
KR100606277B1 KR1020040115369A KR20040115369A KR100606277B1 KR 100606277 B1 KR100606277 B1 KR 100606277B1 KR 1020040115369 A KR1020040115369 A KR 1020040115369A KR 20040115369 A KR20040115369 A KR 20040115369A KR 100606277 B1 KR100606277 B1 KR 100606277B1
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South Korea
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refrigerant
cooling
heat exchanger
heating
air conditioner
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KR1020040115369A
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Korean (ko)
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KR20060075983A (en
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진동식
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위니아만도 주식회사
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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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2507—Flow-diverting valves

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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

본 발명은 단일형 또는 멀티형 히트펌프에 있어 냉방운전시 및 난방운전시 모두 냉매의 흐름을 제어하여 과냉각하도록 과냉각기를 지나도록 함으로써 냉각효율을 높이고자 한 히트펌프식 공조기의 냉난방 시스템에 관한 것이다.The present invention relates to a heating and cooling system of a heat pump type air conditioner to increase cooling efficiency by passing a supercooler so as to supercool by controlling the flow of refrigerant in both a cooling operation and a heating operation in a single type or a multi type heat pump.

본 발명에 따른 히트펌프식 공조기의 냉난방 시스템은 압축기, 사방변, 실내측 열교환기, 실외측 열교환기, 난방용 팽창변, 냉방용 팽창변, 실외기에 형성된 과냉각기 및 잉여 냉매를 저장하는 수액기를 구비하여 냉난방 겸용으로 사용되는 히트펌프식 공조기의 냉난방 시스템에 있어서, 상기 난방용 팽창변과 냉방용 팽창변 사이에는 냉매흐름절환부재가 구비되어 공조기의 냉방 및 난방 운전시에 냉매를 수액기에서 과냉각기로 유동되도록 제어하는 것을 특징으로 한다.The air-conditioning system of the heat pump type air conditioner according to the present invention has a compressor, a four-sided valve, an indoor side heat exchanger, an outdoor side heat exchanger, a heating expansion valve, an expansion valve for cooling, a supercooler formed in an outdoor unit, and a receiver for storing surplus refrigerant. In the air-conditioning system of a heat pump type air conditioner used as a combined use, a refrigerant flow switching member is provided between the heating expansion valve and the heating expansion valve to control the refrigerant to flow from the receiver to the supercooler during cooling and heating operation of the air conditioner. It features.

히트펌프, 에어컨, 실외측 열교환기, 과냉각기, 수액기, 냉매흐름절환부재Heat pump, air conditioner, outdoor heat exchanger, supercooler, receiver, refrigerant flow switching member

Description

히트펌프식 공조기의 냉난방 시스템{heat-pump air-conditioner}   Heat-pump air-conditioner of heat pump type air conditioner

도 1은 종래 단일형 히트펌프식 공조기의 냉난방 사이클을 보인 계통도.1 is a schematic diagram showing a heating and cooling cycle of a conventional single heat pump type air conditioner.

도 2는 본 발명의 일실시예에 따른 단일형 히트펌프식 공조기의 냉난방 사이클을 보인 계통도.Figure 2 is a schematic diagram showing a heating and cooling cycle of a single heat pump type air conditioner according to an embodiment of the present invention.

도 3은 본 발명의 일실시예에 따른 멀티형 히트펌프식 공조기의 냉난방 사이클을 보인 계통도.Figure 3 is a schematic diagram showing a heating and cooling cycle of the multi-type heat pump type air conditioner according to an embodiment of the present invention.

도 4는 본 발명의 히트펌프식 공조기에 설치된 냉매흐름절환부재에 의해 냉매의 과냉각률을 보인 그래프. Figure 4 is a graph showing the supercooling rate of the refrigerant by the refrigerant flow switching member installed in the heat pump type air conditioner of the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1,101: 실내측 열교환기 2,102: 실외측 열교환기1,101: indoor side heat exchanger 2,102: outdoor side heat exchanger

5,105: 수액기 8,18: 과냉각기5,105: receiver 8,18: supercooler

114: 냉매흐름절환부재114: refrigerant flow switching member

본 발명은 히트펌프식 공조기의 냉난방 시스템에 관한 것으로, 보다 상세하 게는 단일형 또는 멀티형 히트펌프에 있어 냉방운전시 및 난방운전시 모두 냉매의 흐름을 제어하여 과냉각하도록 과냉각기를 지나도록 함으로써 냉각효율을 높이고자 한 히트펌프식 공조기의 냉난방 시스템에 관한 것이다.The present invention relates to a heating and cooling system of a heat pump type air conditioner, and more particularly, in a single type or multi type heat pump, the cooling efficiency is increased by passing a supercooler so as to supercool by controlling the flow of refrigerant during both the cooling operation and the heating operation. It relates to a heating and cooling system of a heat pump type air conditioner to increase.

일반적으로, 냉동 사이클은 압축기, 응축기, 팽창변 및 증발기로 구성되어, 증발기가 고온부의 열을 흡수하여 응축기가 저온부로 열을 방출한다. Generally, a refrigeration cycle consists of a compressor, a condenser, an expansion valve, and an evaporator, where the evaporator absorbs heat from the hot portion and the condenser releases heat to the cold portion.

따라서, 상기 증발기가 고온부의 열을 흡수하는 것을 이용하면 에어컨 또는 냉장고와 같은 냉방기기를 구성할 수 있고, 응축기가 저온부로 열을 방출 것을 이용하면 난방기기(히트펌프)로 이용될 수 있다.Therefore, when the evaporator absorbs heat of the high temperature portion, a cooling device such as an air conditioner or a refrigerator may be configured, and when the condenser emits heat to the low temperature portion, it may be used as a heating device (heat pump).

또한, 상기 증발기와 응축기는 일종의 열교환기이므로 압축기, 증발기, 응축기 및 팽창변을 구성하고, 냉매의 흐름을 선택적으로 바꾸어주면 냉방운전과 난방운전를 하나의 장치(이하 "히트펌프"라 함)로 구현할 수 있다.In addition, since the evaporator and the condenser are a kind of heat exchanger, the compressor, the evaporator, the condenser, and the expansion valve may be configured, and if the flow of the refrigerant is selectively changed, the cooling operation and the heating operation may be implemented as a single device (hereinafter referred to as a "heat pump"). have.

도 1에 도시된 바와 같이, 종래 히트펌프식 공조기는 냉매를 압축하는 압축기(3)와, 상기 압축기(3)로부터 압축된 냉매를 액냉매 상태로 응축하기 위한 실내측 열교환기(1)(또는 실외측 열교환기(2))와, 상기 실내측 열교환기(1)(실외측 열교환기(2))를 통해 응축된 액냉매를 2상의 냉매(기상+액상)로 팽창시키는 냉방용 팽창변(7)(또는 난방용 팽창변(6))과, 저온 난방 운전시를 대비해 잉여 냉매를 확보하기 위한 수액기(5)와, 상기 냉방용 팽창변(7)(또는 난방용 팽창변(6))에 의해 감압된 냉매로 하여금 냉매액을 과냉각시키기 위한 과냉각기(8)와, 상기 냉방용 팽창변(7)을 통해 팽창된 2상 냉매를 기상 냉매로 증발시키는 실외측 열교환기(2)(또는 실내측 열교환기(1))와, 전원의 인가 유무에 따라 상기 압축기(1)로부터 압축된 냉매를 실내측 열교환기(1) 또는 실외측 열교환기(2)측으로 보내기 위한 사방변(4)으로 구성된다.As shown in FIG. 1, a conventional heat pump type air conditioner includes a compressor 3 for compressing a refrigerant, and an indoor heat exchanger 1 (or condensed refrigerant in a liquid refrigerant state) from the compressor 3. 7. An expansion valve for cooling which expands the liquid refrigerant condensed through the outdoor heat exchanger 2 and the indoor heat exchanger 1 (outdoor heat exchanger 2) into a two-phase refrigerant (gas phase + liquid phase). (Or a heating expansion valve 6), a receiver 5 for securing surplus refrigerant in preparation for low temperature heating operation, and a refrigerant depressurized by the cooling expansion valve 7 (or a heating expansion valve 6). A subcooler (8) for supercooling the refrigerant liquid, and an outdoor side heat exchanger (2) (or an indoor side heat exchanger (1) for evaporating the two-phase refrigerant expanded through the cooling expansion valve (7) to gaseous refrigerant. )) And the refrigerant compressed from the compressor (1) according to the presence or absence of power. Consists of a four-way side (4) to send toward the heat exchanger (2).

또한, 상기 실내측 열교환기(1) 및 실외측 열교환기(2)에는 실내 토출팬(9) 및 실외 토출팬(10)을 구비하여 공기를 실내측 열교환기(1) 또는 실외측 열교환기(2)측으로 강제 유입시키도록 한다.In addition, the indoor side heat exchanger 1 and the outdoor side heat exchanger 2 are provided with an indoor discharge fan 9 and an outdoor discharge fan 10 to supply air to the indoor side heat exchanger 1 or the outdoor side heat exchanger ( Force inflow to 2) side.

이와 같이 구성된 상태에서 히트펌프식 공조기의 운전이 난방모드일 경우에는 냉매가 압축기(3)로 유입되어 압축되고, 이때의 사방변(4)은 실내측 열교환기(1) 방향으로 통해 있으므로 상기 압축기(3)로부터 압축된 냉매는 실내측 열교환기(1)로 유입되어 액냉매 상태로 응축되며, 상기 실내측 열교환기(1)로부터 응축된 액냉매는 실내측 분배기(13)와 냉방용 팽창변(7)을 거쳐 수액기(5)에 잉여 냉매를 저장하고, 과냉각기(8)를 통과하면서 과냉각된다.When the operation of the heat pump type air conditioner in the state configured as described above is a heating mode, the refrigerant flows into the compressor 3 and is compressed. At this time, the four sides 4 are directed toward the indoor side heat exchanger 1, and thus the compressor. The refrigerant compressed from (3) is introduced into the indoor heat exchanger (1) and condensed in the liquid refrigerant state, and the liquid refrigerant condensed from the indoor heat exchanger (1) is the indoor distributor (13) and the expansion valve for cooling ( The excess refrigerant is stored in the receiver 5 via 7), and is supercooled while passing through the supercooler 8.

이때, 상기 냉방용 팽창변(7)과 난방용 팽창변(6)은 실내측 열교환기(1) 또는 실외측 열교환기(2)의 증발시 과열도를 가지고 제어하게 된다.At this time, the cooling expansion valve (7) and the heating expansion valve (6) are controlled with the degree of superheat during evaporation of the indoor heat exchanger (1) or the outdoor heat exchanger (2).

즉, 냉방운전시에 난방용 팽창변(6)은 완전히 닫히고, 냉방용 팽창변(7)은 실내측 열교환기(1)의 증발온도와 출구온도를 이용하여 과열도도 제어하게 된다.That is, during the cooling operation, the heating expansion valve 6 is completely closed, and the cooling expansion valve 7 also controls the superheat degree by using the evaporation temperature and the outlet temperature of the indoor heat exchanger 1.

반대로, 난방운전시에 냉방용 팽창변(7)은 완전히 열리고, 난방용 팽창변(6)은 실외측 열교환기(2)의 증발온도와 출구온도로써 제어를 수행하게 된다.On the contrary, during the heating operation, the cooling expansion valve 7 is completely opened, and the heating expansion valve 6 is controlled by the evaporation temperature and the outlet temperature of the outdoor heat exchanger 2.

그리고, 과냉각된 냉매는 난방용 팽창변(6)을 통과하면서 감압된 상태로 실외측 분배기(12)를 거쳐 실외측 열교환기(2)로 유입되어 기상으로 증발되고, 다시 압축기(3)로 유입되어 상기와 같은 과정이 반복된다.Then, the supercooled refrigerant flows into the outdoor heat exchanger (2) through the outdoor side distributor (12) in a reduced pressure while passing through the expansion valve (6) for heating, and evaporates into the gas phase, and then flows into the compressor (3). The process is repeated.

이때, 상기 실내 토출팬(9)에 의해 실내측 열교환기(1)로 강제 유입된 실내의 찬 공기는 실내측 열교환기(1)를 유동하는 냉매로부터 응축열을 흡수하여 다시 실내로 토출, 난방을 실시하게 되고, 실외 토출팬(10)에 의해 실외측 열교환기(2)로 강제 유입된 실외의 공기는 실외측 열교환기(2)를 유동하는 냉매에 그 열을 빼앗겨 온도가 강하된 상태로 다시 실외로 토출된다.At this time, the indoor cold air forced into the indoor heat exchanger 1 by the indoor discharge fan 9 absorbs condensation heat from the refrigerant flowing through the indoor heat exchanger 1, and discharges and heats the room again. The outdoor air forced into the outdoor heat exchanger 2 by the outdoor discharge fan 10 is deprived of its heat to the refrigerant flowing through the outdoor heat exchanger 2, and the temperature is dropped again. It is discharged to the outside.

또한, 히트펌프식 공조기의 운전이 냉방모드일 경우에는 사방변(4)이 실외측 열교환기(2)측으로 개방되며, 냉매가 압축기(3) →실외측 열교환기(2) →실외측 분배기(12) →체크밸브(11) →과냉각기(8) →수액기(5) →냉방용 팽창변(7) →실내측 분배기(13) →실내측 열교환기(1) 순으로 순환하면서 냉방을 실시하며, 상기와 같은 과정을 반복 수행하게 된다.In addition, when the operation of the heat pump type air conditioner is in the cooling mode, the four sides 4 are open to the outdoor heat exchanger 2, and the refrigerant is released from the compressor 3 to the outdoor heat exchanger 2 to the outdoor distributor. 12) → Check valve (11) → Supercooler (8) → Liquid receiver (5) → Cooling expansion valve (7) → Indoor distributor (13) → Indoor heat exchanger (1) And, the above process is repeated.

그러나, 이와 같이 히트펌프식 공조기는 수액기 내부에서 냉매의 상태를 기체와 액체로 공존 상태이기 때문에 냉매의 유동 경로상 수액기를 통과한 후 과냉각기에서 과냉각되는 난방운전시에만 과냉각을 얻을 수 있고, 냉방운전시에 과냉각 정도가 저하되는 문제점이 있었다.However, since the heat pump type air conditioner coexists with the state of the refrigerant as gas and liquid in the receiver, the supercooling can be obtained only during the heating operation which is supercooled in the supercooler after passing through the receiver on the flow path of the refrigerant. There was a problem that the degree of supercooling decreases during the cooling operation.

본 발명은 상기한 종래 기술의 문제점을 해결하고자 제안된 것으로서, 히트펌프식 공조기에서 냉 ·난방 모드에 관계없이 항상 냉매를 과냉각기로 안내하도록 냉매흐름절환부재를 구비함으로써 냉매의 냉각 효율을 증가시킬 수 있도록 하기 위한 히트펌프식 공조기의 냉난방 시스템을 제공함을 그 목적으로 한다. The present invention is proposed to solve the above problems of the prior art, by providing a refrigerant flow switching member to guide the refrigerant to the supercooler regardless of the cooling and heating mode in the heat pump type air conditioner can increase the cooling efficiency of the refrigerant It is an object of the present invention to provide a heating and cooling system for a heat pump type air conditioner.                         

상기한 목적을 달성하기 위한 본 발명에 따른 히트펌프식 공조기의 냉난방 시스템은 압축기, 사방변, 실내측 열교환기, 실외측 열교환기, 난방용 팽창변, 냉방용 팽창변, 실외기에 형성된 과냉각기 및 잉여 냉매를 저장하는 수액기를 구비하여 냉난방 겸용으로 사용되는 히트펌프식 공조기의 냉난방 시스템에 있어서, 상기 난방용 팽창변과 냉방용 팽창변 사이에는 냉매흐름절환부재가 구비되어 공조기의 냉방 및 난방 운전시에 냉매를 수액기에서 과냉각기로 유동되도록 제어하는 것을 특징으로 한다.
Heating and cooling system of the heat pump type air conditioner according to the present invention for achieving the above object is a compressor, four sides, indoor side heat exchanger, outdoor side heat exchanger, heating expansion valve, cooling expansion valve, the supercooler and excess refrigerant formed in the outdoor unit In the air-conditioning system of a heat pump type air conditioner, which is used as a cooling and heating system, a refrigerant flow switching member is provided between the heating expansion valve and the cooling expansion valve to store refrigerant in the receiver and during the cooling and heating operation of the air conditioner. It characterized in that the control to flow to the supercooler.

이하, 본 발명의 구성을 첨부한 도면을 참조하여 더욱 상세히 설명한다. Hereinafter, with reference to the accompanying drawings, the configuration of the present invention will be described in more detail.

도 2는 본 발명의 일실시예에 따른 단일형 히트펌프식 공조기의 냉난방 사이클을 보인 계통도이고, 도 3은 본 발명의 일실시예에 따른 멀티형 히트펌프식 공조기의 냉난방 사이클을 보인 계통도이며, 도 4는 본 발명의 히트펌프식 공조기에 설치된 냉매흐름절환부재에 의해 냉매의 과냉각률을 보인 그래프이다. 2 is a schematic diagram showing a cooling and heating cycle of a single heat pump type air conditioner according to an embodiment of the present invention, Figure 3 is a schematic diagram showing a cooling and heating cycle of a multi-type heat pump type air conditioner according to an embodiment of the present invention, Figure 4 Is a graph showing the supercooling rate of the refrigerant by the refrigerant flow switching member installed in the heat pump type air conditioner of the present invention.

본 발명에서 공지된 구성요소에 대해서는 상세한 기능을 언급하지 않는다.The components well known in the present invention do not mention the detailed functions.

도 2 및 도 3에 도시된 바와 같이, 본 발명에 따른 히트펌프식 공조기의 냉난방 시스템은 압축기(103), 사방변(104), 실내측 열교환기(101), 실외측 열교환기(102), 난방용 팽창변(106), 냉방용 팽창변(107), 실외기에 형성된 과냉각기(108) 및 잉여 냉매를 저장하는 수액기(105)를 구비하여 냉난방 겸용으로 사용되는 히트펌프식 공조기의 냉난방 시스템에 있어서, 상기 난방용 팽창변(106)과 냉방 용 팽창변(107) 사이에는 냉매흐름절환부재(114)가 구비되어 공조기의 냉방 및 난방 운전시 냉매를 수액기(105)에서 과냉각기(108)로 유동되도록 제어함으로써 냉각효율을 증가시키는 것을 특징으로 한다.As shown in Figure 2 and 3, the heating and cooling system of the heat pump type air conditioner according to the present invention is a compressor 103, four sides 104, indoor side heat exchanger 101, outdoor side heat exchanger 102, In the heating and heating system 106 of the heat pump type air conditioner having a heating expansion valve 106, a cooling expansion valve 107, a subcooler 108 formed in the outdoor unit and a receiver 105 for storing excess refrigerant, which is used for both heating and cooling, A refrigerant flow switching member 114 is provided between the heating expansion valve 106 and the cooling expansion valve 107 to control the refrigerant to flow from the receiver 105 to the supercooler 108 during the cooling and heating operation of the air conditioner. It is characterized by increasing the cooling efficiency.

도 2는 본 발명의 일실시예로써 실내측 열교환기(101)를 한 대 구비한 단일형 히트펌프식 공조기의 냉난방 사이클을 보인 계통도이다.2 is a system diagram showing a cooling and heating cycle of a single heat pump type air conditioner having one indoor heat exchanger 101 as one embodiment of the present invention.

먼저, 그 구성을 살펴보면, 냉매를 압축하는 압축기(103)와, 상기 압축기(103)로부터 압축된 냉매를 사방변(104)으로써 안내하며 액냉매 상태로 응축하기 위한 실내측 열교환기(101)(또는, 실외측 열교환기(102))와, 상기 실내측 열교환기(101)(또는, 실외측 열교환기(102))를 통해 응축된 액냉매를 감압시키는 냉방용 팽창변(107)과, 잉여냉매를 저장하는 수액기(105)와, 상기 수액기(105)를 통해 유동되는 냉매를 과냉각시키는 과냉각기(108)와, 상기 과냉각기(108)에 의해 과냉각된 냉매를 감압하는 난방용 팽창변(106)과, 감압된 냉매를 증발시키는 실외측 열교환기(102)(또는, 실내측 열교환기(101))로 구성된다.First, referring to the configuration, the compressor 103 for compressing the refrigerant and the indoor heat exchanger 101 for guiding the refrigerant compressed from the compressor 103 to the four sides 104 and condensing the liquid refrigerant in the state of liquid ( Alternatively, a cooling expansion valve 107 for depressurizing the liquid refrigerant condensed through the outdoor heat exchanger 102, the indoor heat exchanger 101 (or the outdoor heat exchanger 102), and the excess refrigerant Receiving unit 105 for storing the, the subcooler 108 for supercooling the refrigerant flowing through the receiver 105, and the expansion valve 106 for heating to depressurize the refrigerant supercooled by the subcooler 108 And an outdoor side heat exchanger 102 (or an indoor side heat exchanger 101) for evaporating the reduced pressure refrigerant.

이때, 상기 실내측 열교환기(101) 및 실외측 열교환기(102)에는 실내 토출팬(109) 및 실외 토출팬(110)을 구비하여 공기를 실내측 열교환기(101) 또는 실외측 열교환기(102)로 강제 유입시키도록 한다.In this case, the indoor heat exchanger 101 and the outdoor heat exchanger 102 are provided with an indoor discharge fan 109 and an outdoor discharge fan 110 to supply air to the indoor heat exchanger 101 or the outdoor heat exchanger ( Forced entry into 102).

그리고, 상기 실내측 열교환기(101)와 실외측 열교환기(102)는 인접되게 각각 실내측 분배기(113)와 실외측 분배기(112)를 갖고 냉매를 일정량 유동시킨다.The indoor side heat exchanger 101 and the outdoor side heat exchanger 102 have an indoor side distributor 113 and an outdoor side distributor 112 adjacent to each other to allow a predetermined amount of refrigerant to flow.

또한, 상기 난방용 팽창변(106)은 체크밸브(111)를 함께 구비하는데, 상기 체크밸브(111)는 냉방모드시에 냉매의 흐름을 안내하며, 난방모드시의 냉매 역흐름 을 방지한다. In addition, the heating expansion valve 106 is provided with a check valve 111, the check valve 111 guides the flow of the refrigerant in the cooling mode, and prevents the reverse flow of the refrigerant in the heating mode.

한편, 본 발명에 의한 히트펌프식 공조기는 냉난방 모드의 절환에 상관없이 항상 냉매가 수액기(105)에서 과냉각기(108)로 흐르도록 하여 액체 상태의 냉매를 저장한 수액기(105)를 지난 상태에서 냉매를 과냉각하기 위해 냉매흐름절환부재(114)를 구비한다.On the other hand, the heat pump type air conditioner according to the present invention, regardless of the switching of the heating and cooling mode, the refrigerant always flows from the receiver 105 to the supercooler 108 to pass through the receiver 105 storing the refrigerant in the liquid state A refrigerant flow switching member 114 is provided to supercool the refrigerant in the state.

즉, 상기 냉매흐름절환부재(114)는 수액기(105)와, 난방용 팽창변(106)과, 냉방용 팽창변(107) 및 과냉각기(108)를 함께 연결하여 제어부(도시하지 않음)에 의해 스위칭(switching)되며 냉방모드시와 난방모드시에 항상 냉매를 수액기(105)에서 과냉각기(108)로 유동하도록 함으로써 냉각효율을 증가시킨다.That is, the refrigerant flow switching member 114 is connected by a control unit (not shown) by connecting the receiver 105, the heating expansion valve 106, the cooling expansion valve 107 and the supercooler 108 together. The cooling efficiency is increased by allowing the refrigerant to flow from the receiver 105 to the supercooler 108 at all times in the cooling mode and the heating mode.

이때, 상기 냉매흐름절환부재(114)는 사방향(4-way) 흐름 제어되는 모세관으로 할 수 있고, 도시된 바와 같이, 전자 제어되는 사방밸브로 할 수도 있다.In this case, the refrigerant flow switching member 114 may be a capillary tube that is 4-way flow control, as shown, may be an electronically controlled four-way valve.

그래서, 상기 냉매흐름절환부재(114)는 두 방향에서 냉매를 유입하여 다른 두 방향으로 냉매를 안내한다. Thus, the refrigerant flow switching member 114 introduces the refrigerant in two directions to guide the refrigerant in the other two directions.

이와 같이 구성된 상태에서, 히트펌프식 공조기의 냉방 운전시에는 냉매가 압축기(103)로부터 압축된 상태로 토출되어 사방변(104)을 통과하여 실외측 열교환기(102)로 유입된 후 응축, 액화되고, 액화된 액냉매는 실외측 분배기(112) 및 체크밸브(111)를 거쳐 냉매흐름절환부재(114)로 유입된다.In this configuration, during the cooling operation of the heat pump type air conditioner, the refrigerant is discharged in a compressed state from the compressor 103 and passes through the four sides 104 to the outdoor heat exchanger 102 to condense and liquefy. The liquefied liquid refrigerant flows into the refrigerant flow switching member 114 through the outdoor distributor 112 and the check valve 111.

상기 냉매흐름절환부재(114)는 수액기(105) 방향으로 개방되기 때문에 냉매는 수액기(105)를 거쳐 과냉각기(108)를 통과하면서 과냉각된다.Since the refrigerant flow switching member 114 is opened toward the receiver 105, the refrigerant is supercooled while passing through the supercooler 108 through the receiver 105.

그리고, 과냉각된 냉매는 다시 냉매흐름절환부재(114)로 유입된다.Then, the supercooled coolant flows back into the coolant flow switching member 114.

이때, 상기 냉매흐름절환부재(114)는 냉방용 팽창변(107) 방향으로 개방되어 있기 때문에 냉매는 실내기의 냉방용 팽창변(107)으로 유동한다.At this time, since the refrigerant flow switching member 114 is open toward the cooling expansion side 107, the refrigerant flows to the cooling expansion side 107 of the indoor unit.

그리고, 상기 냉방용 팽창변(107)을 통과하면서 감압된 냉매는 실내측 분배기(113)를 거쳐 실내측 열교환기(101)로 유입되어 열교환된 후 사방변(104)을 통해 실외기의 압축기(103)로 다시 유입되고, 공조기가 운전되는 동안 상기와 같은 과정을 반복 수행하게 된다.Then, the refrigerant depressurized while passing through the cooling expansion valve 107 is introduced into the indoor heat exchanger 101 through the indoor distributor 113 and heat exchanged, and then the compressor 103 of the outdoor unit through the four sides 104. This process is repeated again while the air conditioner is operating.

이때, 상기 실외 토출팬(110)에 의해 실외측 열교환기(102)로 강제 유입된 실외의 찬 공기는 실외측 열교환기(102)를 유동하는 냉매의 온도를 낮추고, 온도가 상승된 상태로 다시 실외로 토출되며, 실내 토출팬(109)에 의해 실내측 열교환기(101)로 강제 유입된 실내 공기는 실내측 열교환기(101)를 유동하는 냉매와 열교환하여 온도가 강하된 상태로 실내로 토출, 냉방을 실시하게 된다.At this time, the outdoor cold air forced into the outdoor heat exchanger 102 by the outdoor discharge fan 110 lowers the temperature of the refrigerant flowing through the outdoor heat exchanger 102, and again increases the temperature. The indoor air discharged to the outside and forced into the indoor heat exchanger 101 by the indoor discharge fan 109 is discharged into the room in a state where the temperature is lowered by heat exchange with the refrigerant flowing through the indoor heat exchanger 101. And cooling is performed.

한편, 히트펌프식 공조기의 난방 운전시에는 압축기(103) →사방변(104) →실내측 열교환기(101) →실내측 분배기(113) →냉방용 팽창변(107) →냉매흐름절환부재(114) →수액기(105) →과냉각기(108) →냉매흐름절환부재(114) →난방용 팽창변(106) →실외측 열교환기(102) →사방변(104) →압축기(103)의 순환경로를 거치게 된다.On the other hand, during the heating operation of the heat pump type air conditioner, the compressor 103 → the four sides 104 → the indoor side heat exchanger 101 → the indoor side distributor 113 → the cooling expansion side 107 → the refrigerant flow switching member 114 ) → receiver 105 → supercooler 108 → refrigerant flow switching member 114 → heating expansion valve 106 → outdoor heat exchanger 102 → four sides 104 → circulating path of compressor 103 Going through.

즉, 본 발명에 의한 히트펌프식 공조기는 냉매흐름절환부재(114)에 의해 냉매가 항상 수액기(105)에서 과냉각기(108) 방향으로 유동하면서 냉각효율을 증가시키게 된다.That is, the heat pump type air conditioner according to the present invention increases the cooling efficiency while the refrigerant always flows from the receiver 105 to the supercooler 108 by the refrigerant flow switching member 114.

이때, 상기 과냉각기(108)는, 공지된 바와 같이, 실외측 열교환기(102)와 일 체로 형성될 수도 있고, 실외측 열교환기(102)와 별도로 분리될 수도 있다.At this time, the subcooler 108, as is known, may be formed integrally with the outdoor side heat exchanger 102, may be separated from the outdoor side heat exchanger (102).

한편, 도 3에 도시된 바와 같이, 본 발명의 일실시예에 의한 멀티형 히트펌프식 공조기는 다수 개의 실내측 열교환기(101a,10b)를 구비할 수 있으며, 각각의 실내측 열교환기(101a,10ab)에는 대응되는 실내 토출팬(109a,109b)과, 냉방용 팽창변(107a,107b) 및 실내측 분배기(113a,113b)를 갖는다.On the other hand, as shown in Figure 3, the multi-type heat pump type air conditioner according to an embodiment of the present invention may be provided with a plurality of indoor side heat exchanger (101a, 10b), each of the indoor side heat exchanger (101a, 10ab has corresponding indoor discharge fans 109a and 109b, cooling expansion valves 107a and 107b and indoor distributors 113a and 113b.

그래서, 상기 각각의 실내측 열교환기(101a,101b)는 일측을 동시에 사방변(104)과 연결되고, 타측을 대응되는 냉방용 팽창변(107a,107b) 및 실내측 분배기(113a,113b)와 연결된다.Thus, each indoor side heat exchanger (101a, 101b) is one side connected to the four sides at the same time 104, the other side is connected to the corresponding cooling expansion sides (107a, 107b) and the indoor side distributors (113a, 113b) do.

그리고, 상기 냉방용 팽창변(107a,107b)과 실내측 분배기(113a,113b)는 함께 냉매흐름절환부재(114)와 연결되어 상술한 냉난방시의 냉매 유동을 형성한다.In addition, the cooling expansion sides 107a and 107b and the indoor distributors 113a and 113b are connected to the refrigerant flow switching member 114 together to form the refrigerant flow at the time of heating and cooling.

도면에서는 2개의 실내측 열교환기(101a,101b)와 이에 대응되는 냉방용 팽창변(107a,107b) 및 실내측 분배기(113a,113b)를 도시하였으나, 각각 3개 이상 설치될 수도 있다.In the drawing, two indoor side heat exchangers 101a and 101b, cooling expansion valves 107a and 107b and corresponding indoor side distributors 113a and 113b corresponding thereto are illustrated, but three or more may be installed.

도면 중 미 설명된 도면부호는 상술한 바와 동일하다.Reference numerals not described in the drawings are the same as described above.

이때도, 상기 실외측 열교환기(102)는, 공지된 것과 같이, 과냉각기(108)와 일체로 형성될 수도 있고, 분리될 수도 있다. In this case, the outdoor side heat exchanger 102 may be formed integrally with the subcooler 108 or may be separated as is known.

한편, 도 4에 도시된 바와 같이, 본 발명에 의한 히트펌프식 공조기는 냉매흐름절환부재를 구비하여 냉매를 항상 수액기에서 과냉각기로 유동되도록 함으로써 그래프 상에서 과냉각을 나타내는 면적이 증가됨을 알 수 있다.On the other hand, as shown in Figure 4, the heat pump type air conditioner according to the present invention has a refrigerant flow switching member it can be seen that the area indicating the supercooling on the graph is increased by always allowing the refrigerant to flow from the receiver to the supercooler.

상기한 바와 같이 본 발명에 따른 히트펌프식 공조기의 냉난방 시스템에 의하면, 공조기의 냉매 사이클에 냉매흐름절환부재를 두어 냉방 및 난방 모드시 항상 액체 상태의 냉매를 일부 저장한 수액기에서 과냉각기로 냉매를 유동되도록 함으로써 과냉각 정도를 향상시켜 냉각 효율을 증대시킬 수 있는 효과가 있다.As described above, according to the air-conditioning system of the heat pump type air conditioner according to the present invention, the refrigerant flow switching member is provided in the refrigerant cycle of the air conditioner so that the refrigerant is transferred to the supercooler from the receiver which always stores some of the liquid refrigerant in the cooling and heating modes. By allowing the flow to increase the degree of supercooling has the effect of increasing the cooling efficiency.

Claims (4)

압축기, 사방변, 실내측 열교환기, 실외측 열교환기, 난방용 팽창변, 냉방용 팽창변, 실외기에 형성된 과냉각기 및 잉여 냉매를 저장하는 수액기를 구비하여 냉난방 겸용으로 사용되는 히트펌프식 공조기의 냉난방 시스템에 있어서, In the air-conditioning system of a heat pump type air conditioner, which is used for both heating and cooling, it is equipped with a compressor, a four-sided valve, an indoor side heat exchanger, an outdoor side heat exchanger, a heating expansion valve, a cooling expansion valve, a supercooler formed in an outdoor unit, and a receiver for storing excess refrigerant. In 상기 난방용 팽창변과 냉방용 팽창변 사이에는 냉매흐름절환부재가 구비되어 상기 공조기의 냉방 및 난방 운전시에 냉매를 상기 수액기에서 과냉각기로 유동되도록 제어함으로써 냉각효율을 증가시키는 것을 특징으로 하는 히트펌프식 공조기의 냉난방 시스템.A refrigerant flow switching member is provided between the heating expansion valve and the cooling expansion valve to increase the cooling efficiency by controlling the refrigerant to flow from the receiver to the supercooler during the cooling and heating operation of the air conditioner. Heating and cooling system. 제 1항에 있어서,The method of claim 1, 상기 실내측 열교환기는 하나 이상 형성되어 각각 상기 사방변 및 냉매흐름절환부재와 연결된 것을 특징으로 하는 히트펌프식 공조기의 냉난방 시스템.At least one indoor side heat exchanger is formed and connected to the four sides and the refrigerant flow switching member, respectively. 제 1항에 있어서,The method of claim 1, 상기 과냉각기는 실외측 열교환기와 일체로 형성되거나 또는 분리되는 것을 특징으로 하는 히트펌프식 공조기의 냉난방 시스템.The supercooler is a heating and cooling system of the heat pump type air conditioner, characterized in that formed integrally or separated from the outdoor side heat exchanger. 제 1항에 있어서,The method of claim 1, 상기 냉매흐름절환부재는 전자팽창밸브 또는 모세관인 것을 특징으로 하는 히트펌프식 공조기의 냉난방 시스템.The refrigerant flow switching member is an air-conditioning system of a heat pump type air conditioner, characterized in that the expansion valve or capillary tube.
KR1020040115369A 2004-12-29 2004-12-29 heat-pump air-conditioner KR100606277B1 (en)

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CN110057144A (en) * 2019-05-21 2019-07-26 宁波奥克斯电气股份有限公司 A kind of expansion valve component, bidirectional throttle system and air conditioner

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JP2000283583A (en) 1999-03-29 2000-10-13 Yanmar Diesel Engine Co Ltd Heat pump
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