KR100195918B1 - The defrosting apparatus of a heat pump - Google Patents

The defrosting apparatus of a heat pump Download PDF

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Publication number
KR100195918B1
KR100195918B1 KR1019960072592A KR19960072592A KR100195918B1 KR 100195918 B1 KR100195918 B1 KR 100195918B1 KR 1019960072592 A KR1019960072592 A KR 1019960072592A KR 19960072592 A KR19960072592 A KR 19960072592A KR 100195918 B1 KR100195918 B1 KR 100195918B1
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South Korea
Prior art keywords
compressor
heat pump
evaporator
refrigerant
heat
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KR1019960072592A
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Korean (ko)
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KR19980053486A (en
Inventor
신상철
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구자홍
엘지전자주식회사
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Priority to KR1019960072592A priority Critical patent/KR100195918B1/en
Publication of KR19980053486A publication Critical patent/KR19980053486A/en
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Publication of KR100195918B1 publication Critical patent/KR100195918B1/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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/05—Cost reduction

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

본 발명은 히트펌프에 관한 것으로서, 특히 착상시 적절한 제상을 실시하도록 한 히트펌프의 제상장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump, and more particularly, to a defrosting apparatus of a heat pump that performs proper defrosting during implantation.

이러한 본 발명은 압축기의 열을 흡수하여 전류를 발생시키는 열전모듈과, 상기 열전모듈로부터 발생된 전류가 충전되는 축전기를 구비한 것이다.The present invention has a thermoelectric module for absorbing heat of the compressor to generate a current, and a capacitor in which the current generated from the thermoelectric module is charged.

Description

히트펌프의 제상장치Defroster of heat pump

본 발명은 히트펌프에 관한 것으로서, 특히 착상시 적절한 제상을 실시하도록 한 히트펌프의 제상장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump, and more particularly, to a defrosting apparatus of a heat pump that performs proper defrosting during implantation.

종래 히트펌프는 도 1 에 도시된 바와 같이, 냉매가스를 압축하는 압축기(1)와, 상기 압축기(1)로부터 압축된 고온고압의 냉매가스를 액냉매상태로 응축시키는 응축기(2)와, 상기 응축기(2)로부터 응축된 액냉매를 팽창시켜 2상상태(액상+기상)의 냉매로 변화시키는 팽창밸브(3)와, 상기 팽창밸브(3)를 통과하면서 압력과 온도가 떨어져 2상상태로 변한 냉매를 기상상태의 냉매가스로 증발시키는 증발기(4)로 구성하였다.As shown in FIG. 1, a conventional heat pump includes a compressor 1 for compressing a refrigerant gas, a condenser 2 for condensing a refrigerant gas of high temperature and high pressure compressed from the compressor 1 in a liquid refrigerant state, and An expansion valve (3) for expanding the liquid refrigerant condensed from the condenser (2) to change into a refrigerant in a two-phase state (liquid + gas phase), and in a two-phase state in which pressure and temperature are dropped while passing through the expansion valve (3). The evaporator 4 is configured to evaporate the changed refrigerant into a refrigerant gas in a gaseous state.

이와 같이 구성된 종래의 히트펌프에 전원이 인가되면 압축기(1)에서는 냉매가스가 압축되고, 상기 압축기(1)로부터 압축된 고온고압의 냉매가스는 응축기(2)로 유입되어 액상 및 기상의 2상상태로 변하게 되고, 계속적인 열교환에 의해서 응축기(2) 출구에서는 액상으로 변하게 된다.When power is applied to the conventional heat pump configured as described above, the refrigerant gas is compressed in the compressor (1), and the refrigerant gas of the high temperature and high pressure compressed from the compressor (1) flows into the condenser (2) to provide two-phase liquid and gas phases. The liquid is changed into a liquid state at the outlet of the condenser 2 by continuous heat exchange.

이때, 실내공기는 응축기(2)로 유입되어 고온고압의 냉매가스와 열교환을 하고, 온도가 올라간 상태에서 실내로 토출되어 난방을 실시하게 된다.At this time, the indoor air is introduced into the condenser (2) to exchange heat with the refrigerant gas of high temperature and high pressure, and discharged into the room in the state where the temperature is raised to perform heating.

상기 응축기(2)로부터 응축된 액냉매는 팽창밸브(3)를 통과하면서 압력과 온도가 급격히 떨어져 2상상태의 냉매로 변해 증발기(4)로 유입된다.The liquid refrigerant condensed from the condenser (2) passes through the expansion valve (3) and rapidly drops in pressure and temperature to turn into a two-phase refrigerant and flows into the evaporator (4).

상기 증발기(4)로 유입된 2상상태의 냉매는 실외공기와의 열교환을 실시하면서 기상상태의 냉매가스로 증발되고, 다시 압축기(1)로 유입되어 사이클이 반복된다.The refrigerant in the two-phase state introduced into the evaporator 4 is evaporated into the refrigerant gas in the gaseous state while performing heat exchange with the outdoor air, and flows into the compressor 1 again, and the cycle is repeated.

이때, 상기 증발기(4)에서의 열교환작용은 흡입된 실외공기로부터 열을 흡수하는 것으로, 도 2 와 같이(도면중 실선은 실외온도 7oC이상시, 점선은 실외온도 5oC이하시) 실외공기의 온도가 약 7oC라면 증발기(4)의 온도는 약 1 ∼ 2oC인 상태에서 사이클이 형성되고, 실외공기가 더 내려가서 4 ∼ 5oC이하가 되면 증발기(4)의 온도도 실외공기를 따라 내려가면서 사이클이 형성되므로 증발기(4)의 온도는 0oC이하로 내려가게 된다.At this time, the heat exchange action in the evaporator 4 absorbs heat from the sucked outdoor air, as shown in FIG. 2 (in the drawing, when the solid line is at an outdoor temperature of 7 ° C or more and the dashed line is at an outdoor temperature of 5 ° C. or less). If the temperature of the outdoor air is about 7 o C, a cycle is formed with the temperature of the evaporator 4 being about 1 to 2 o C, and when the outdoor air goes down to 4 to 5 o C or less, the evaporator 4 Since the temperature is also formed along the outdoor air cycle is formed, the temperature of the evaporator (4) is lowered below 0 o C.

이에 따라, 실외공기의 온도가 4 ∼ 5oC이하(이를 착상조건이라 함)가 되면 증발기(4)의 외벽위에는 착상이 발생하고, 이 서리층은 공기와 냉매 사이에서 열전달을 방해하는 열저항체로 작용할 뿐만 아니라 증발기(4)를 통과하는 실외공기의 유로를 가로막아 공기의 시스템 저항을 증가시키므로 증발기(4)내로 유입되는 실외 풍량을 감소시켜 증발기(4)의 공기측 열전달 계수가 감소하고, 이는 증발기(4)에서의 열전달량의 감소로 이어지게 된다.Accordingly, when the temperature of the outdoor air is 4 to 5 o C or less (this is called an implantation condition), an frost is generated on the outer wall of the evaporator 4, and this frost layer prevents heat transfer between the air and the refrigerant. In addition, it increases the system resistance of the air by blocking the flow path of the outdoor air passing through the evaporator 4, thereby reducing the amount of outdoor air flowing into the evaporator 4, thereby decreasing the air-side heat transfer coefficient of the evaporator 4, This leads to a decrease in the amount of heat transfer in the evaporator 4.

그러나 이러한 종래의 히트펌프는 도 2 와 같이 증발기의 온도가 내려감에 따라 사이클이 전반적으로 아래쪽으로 이동하면서 실내의 응축기 온도도 따라 내려가게 되어 히트펌프의 난방능력이 감소하는 문제점이 있었다.However, the conventional heat pump has a problem that the heating capacity of the heat pump is reduced as the temperature of the evaporator is lowered as the cycle moves downward as the overall condenser temperature decreases.

또한, 증발기에 착상이 되었을 때 제상을 위해 운전모드를 난방에서 냉방으로 전환하는 방법을 주로 사용하지만 이는 실내로 차가운 공기가 토출되므로 사용자에게 불쾌감을 주는 문제점이 있었다.In addition, when defrosting the evaporator is used mainly the method of switching the operation mode from heating to cooling for defrosting, but there is a problem that the user is uncomfortable because the cold air is discharged into the room.

본 발명은 이러한 점을 감안하여 일종의 제너레이터(Generator)인 열전모듈을 압축기에 밀착시키고, 이때 발생되는 전류를 축전기에 충전시켜 두었다가, 착상시 상기 전류를 이용하여 제상을 실시함으로써 운전모드를 전환하지 않은 상태에서 별도의 전기적 장치없이 신속히 제상을 실시하는 데 그 목적이 있다.In view of the above, the present invention is a type of generator (thermoelectric module) in close contact with the compressor, and the current generated at this time is charged to the capacitor, and when defrosting using the current at the time of implantation does not change the operation mode The purpose is to quickly perform defrosting in the state without a separate electrical device.

열전모듈이란 전류를 전달하면 저온부에서 열을 흡수하여 고온부로 열을 방출하는 일종의 히트펌프이나, 반대로 열전모듈의 고온부에 열을 가해주고 저온부로 열이 방출되게 하면 전류를 발생시키는 제너레이터(Generator)가 된다.A thermoelectric module is a type of heat pump that absorbs heat from the low temperature part and transmits heat to the high temperature part. On the contrary, a generator that generates heat when heat is applied to the high temperature part of the thermoelectric module and the heat is released to the low temperature part is used. do.

도 1 은 종래 히트펌프의 사이클 구성도.1 is a cycle configuration diagram of a conventional heat pump.

도 2 는 종래 히트펌프의 착상시 증발기 온도에 따른 사이클 변화도.2 is a cycle change diagram according to the evaporator temperature when the conventional heat pump is implanted.

도 3 은 본 발명 히트펌프의 사이클 구성도.3 is a cycle configuration diagram of the heat pump of the present invention.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

101 : 압축기102 : 응축기101: compressor 102: condenser

103 : 팽창밸브104 : 증발기103 expansion valve 104 evaporator

105 : 열전모듈106 : 축전기105: thermoelectric module 106: capacitor

107, 107' : 전선108 : 증발기의 압축기측유로107, 107 ': electric wire 108: compressor side flow path of evaporator

109 : 증발기의 팽창밸브측유로109: expansion valve side flow path of the evaporator

이하, 본 발명을 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 3 은 본 발명에 의한 히트펌프의 구성도를 나타낸 것으로서, 냉매가스를 압축하는 압축기(101)와, 상기 압축기(101)로부터 압축된 고온고압의 냉매가스를 액냉매 상태로 응축하는 응축기(102)와, 상기 응축기(102)로부터 응축된 액냉매를 2상상태의 냉매로 팽창시키는 팽창밸브(103)와, 상기 팽창밸브(103)를 통과하면서 압력과 온도가 떨어져 2상상태로 변한 냉매를 증발시키는 증발기(104)로 구성된다.3 is a configuration diagram of a heat pump according to the present invention, and a compressor 101 for compressing a refrigerant gas and a condenser 102 for condensing a refrigerant gas of high temperature and high pressure compressed from the compressor 101 in a liquid refrigerant state. ), An expansion valve (103) for expanding the liquid refrigerant condensed from the condenser (102) into a refrigerant in a two-phase state, and a refrigerant changed into a two-phase state with a drop in pressure and temperature while passing through the expansion valve (103). It consists of an evaporator 104 which evaporates.

그리고, 상기 압축기(101)의 주위에는 압축기(101)의 열을 흡수하여 전류를 발생시키는 열전모듈(105)이 밀착되고, 상기 압축기(101)와 증발기(104)의 사이에는 열전모듈(105)로부터 발생된 전류가 충전되는 축전기(106)가 구비되며, 상기 열전모듈(105)과 축전기(106)는 열전모듈(105)로부터 생성된 전류를 전달하는 전선(107')으로 연결되고, 상기 축전기(106)에 충전된 전류를 증발기(104)의 양단으로 전달하도록 증발기(104)의 압축기측유로(108) 및 팽창밸브측유로(109) 양단과 축전기(106)도 전류를 전달하는 전선(107)으로 연결된다.In addition, a thermoelectric module 105 for absorbing heat of the compressor 101 to generate a current is in close contact with the compressor 101, and a thermoelectric module 105 is disposed between the compressor 101 and the evaporator 104. Capacitor 106 is provided to charge the current generated from the, the thermoelectric module 105 and the capacitor 106 is connected by a wire 107 'for transmitting the current generated from the thermoelectric module 105, the capacitor An electric wire 107 which transmits electric current through both the compressor side flow path 108 and the expansion valve side flow path 109 of the evaporator 104 and the capacitor 106 to transfer current charged in the 106 to both ends of the evaporator 104. ).

상기 증발기(104)의 유로(108, 109)는 최대한 열이 발생할 수 있도록 도체이면서 전기 저항값이 큰 재질로 구성된다.The flow paths 108 and 109 of the evaporator 104 are made of a material having a large electrical resistance and a conductor so that heat can be generated as much as possible.

이와같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

먼저, 히트펌프에 전원이 인가되면 냉매가스가 압축기(101)로부터 압축이 되고, 상기 압축기(101)로부터 압축된 고온고압의 냉매가스는 응축기(102)로 유입된다.First, when power is applied to the heat pump, the refrigerant gas is compressed from the compressor 101, and the refrigerant gas of the high temperature and high pressure compressed from the compressor 101 is introduced into the condenser 102.

이때, 상기 압축기(101)의 주위에 부착된 열전모듈(105)은 압축기(101)의 냉매가스 압축과정에서 발생된 열을 흡수하여 전류를 발생시키고, 상기 열전모듈(105)로부터 발생된 전류는 축전기(106)에 충전되었다가 증발기(104)의 외벽상부에 착상이 발생하면 전선(107)을 통해 증발기(104)의 유로(108, 109) 양단에 흘려보내게 된다.At this time, the thermoelectric module 105 attached to the periphery of the compressor 101 absorbs heat generated in the refrigerant gas compression process of the compressor 101 to generate a current, and the current generated from the thermoelectric module 105 is When the capacitor 106 is charged and an implantation occurs on the outer wall of the evaporator 104, it flows through the wires 107 through the flow paths 108 and 109 of the evaporator 104.

여기서, 증발기(104)의 압축기측유로(108) 및 팽창밸브측유로(109)는 도체이면서 전기 저항값이 큰 재질로 구성되므로 축전기(106)로부터 전류를 전달받아 발열하고, 이러한 열이 증발기(104)로 전달되어 증발기(104)의 외벽에 쌓인 서리가 제거되는 것이다.Here, the compressor side flow path 108 and the expansion valve side flow path 109 of the evaporator 104 are made of a material having a large electric resistance value as a conductor, and thus generate heat by receiving current from the capacitor 106, and the heat is generated by the evaporator ( The frost delivered to the 104 and accumulated on the outer wall of the evaporator 104 is removed.

따라서, 제상을 실시하기 위하여 운전모드를 변환하지 않은 상태에서 별도의 전기적 장치없이 신속히 제상을 실시할 수 있게 된다.Therefore, in order to perform defrosting, it is possible to quickly perform defrosting without a separate electric device without changing the operation mode.

이상에서 설명한 바와 같이 본 발명은 압축기의 열을 흡수하여 전류를 발생시키고, 이러한 전류를 이용하여 제상을 실시하므로 운전모드를 변환하지 않게 되어 사용자의 불쾌감 발생 및 불필요한 전기의 소비를 방지할 뿐만 아니라 별도의 전기공급을 할 필요없이 자체적으로 전기를 제공하므로 에너지 효율이 향상되는 효과가 있다.As described above, the present invention absorbs heat of the compressor to generate a current, and defrosting using the current, so that the operation mode is not changed, thereby preventing user's discomfort and unnecessary consumption of electricity. Since it provides electricity by itself without having to supply electricity, energy efficiency is improved.

Claims (3)

냉매가스를 압축하는 압축기와, 상기 압축기로부터 압축된 냉매가스를 액냉매로 응축하는 응축기와, 상기 응축기로부터 응축된 액냉매를 2상상태의 냉매로 팽창시키는 팽창밸브와, 상기 팽창밸브를 통과하면서 2상상태로 변한 냉매를 기상상태의 냉매가스로 증발시키는 증발기로 구성된 히트펌프에 있어서,While passing through a compressor for compressing the refrigerant gas, a condenser for condensing the refrigerant gas compressed from the compressor with a liquid refrigerant, an expansion valve for expanding the liquid refrigerant condensed from the condenser into a refrigerant in a two-phase state, In the heat pump composed of an evaporator for evaporating the refrigerant changed into a two-phase state to the refrigerant gas in the gas phase state, 상기 압축기의 열을 흡수하여 전류를 발생시키는 열전모듈과,A thermoelectric module for absorbing heat of the compressor to generate a current; 상기 열전모듈로부터 발생된 전류가 충전되는 축전기를 구비한 것을 특징으로 하는 히트펌프의 제상장치.Defroster of the heat pump, characterized in that it comprises a capacitor to charge the current generated from the thermoelectric module. 제 1 항에 있어서,The method of claim 1, 상기 증발기의 유로 양단과 축전기는 전류를 전달하는 전선으로 연결된 것을 특징으로 하는 히트펌프의 제상장치.Defrosting apparatus of the heat pump, characterized in that the both ends of the flow path and the capacitor of the evaporator is connected by a wire for transmitting a current. 제 1 항에 있어서,The method of claim 1, 상기 열전모듈은 압축기로부터 열을 흡수하도록 압축기의 주위에 밀착된 것을 특징으로 하는 히트펌프의 제상장치.The thermoelectric module is a defrosting apparatus of a heat pump, characterized in that the close contact with the compressor to absorb heat from the compressor.
KR1019960072592A 1996-12-27 1996-12-27 The defrosting apparatus of a heat pump KR100195918B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106705305A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Air conditioner and detecting method for working state of heat accumulating assembly for air conditioner
CN106705303A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Defrosting control method and system and air conditioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106705305A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Air conditioner and detecting method for working state of heat accumulating assembly for air conditioner
CN106705303A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Defrosting control method and system and air conditioner
CN106705303B (en) * 2017-01-10 2019-05-14 美的集团武汉制冷设备有限公司 Defrosting control method, defrosting control system and air conditioner

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