KR20120090392A - Heat pump air conditioning system with defrost function - Google Patents

Heat pump air conditioning system with defrost function Download PDF

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KR20120090392A
KR20120090392A KR1020110010783A KR20110010783A KR20120090392A KR 20120090392 A KR20120090392 A KR 20120090392A KR 1020110010783 A KR1020110010783 A KR 1020110010783A KR 20110010783 A KR20110010783 A KR 20110010783A KR 20120090392 A KR20120090392 A KR 20120090392A
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South Korea
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heat
refrigerant
heat exchanger
expansion valve
heating
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KR1020110010783A
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Korean (ko)
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KR101245875B1 (en
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김경규
김석민
김태익
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김경규
김태익
김석민
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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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • F25B2347/023—Set point defrosting

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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: A heat pump cooling and heating system having a defrosting function is provided to prevent frost by controlling the temperature of refrigerants flowing into a heating expansion valve. CONSTITUTION: A heat pump cooling and heating system having a defrosting function comprises a compressor(10), a heat exchanger(20), a heating expansion valve(30), a cooling expansion valve(40), a liquid receiver(50), an condenser(60), and a liquid separator(14). The heating and cooling expansion valves are installed between the heat exchanger and the liquid receiver in a row to selectively guide a flow of refrigerant. A heat regenerator(80) is installed between the heat exchanger and the heating expansion valve. The heat regenerator heats the refrigerant heat exchanged through the heat exchanger again. The heat regenerator prevents frost when expanded refrigerant passes through the condenser. As to the heat regenerator, some refrigerants discharged from the compressor flow into the heat regenerator. The refrigerant heat exchanged through the heat exchanger passes through the heat regenerator, and is heated again by accumulated heat in the heat regenerator.

Description

제상기능을 갖는 히트펌프 냉난방시스템{.}Heat pump heating and cooling system with defrost function

본 발명 히트펌프 냉난방시스템에 관한 것으로서, 보다 상세하게는 동절기 차가운 외기온도에 의해 서리나 성애의 발생을 방지하고, 서리나 성애가 발생시에도 제거가 가능한 제상기능을 갖는 히트펌프 냉난방시스템에 관한 것이다.
The present invention relates to a heat pump air-conditioning system, and more particularly, to a heat pump air-conditioning system having a defrost function that prevents the occurrence of frost and defrost by the cold outside temperature in winter, and can be removed even when frost or defrost occurs.

열펌프 즉, 히트펌프는 직접사용이 어려운 저온?저밀도의 열에너지를 사용가능 한 고온?고밀도의 열에너지 상태로 끌어올린다는 의미로서, 저온을 고온으로 전환하거나 고온을 저온으로 전환하여 냉방이나 난방을 수행하는 장치를 의미한다.The heat pump, that is, the heat pump, means to bring low-temperature and low-density thermal energy into a high-temperature and high-density thermal energy state that is difficult to use directly. Means a device.

열은 그 자신만으로는 온도가 낮은 곳에서 온도가 높은 곳으로 이동이 불가능하며, 열의 이동에는 반드시 일(Work)이 소요된다. Heat alone cannot move from a low temperature to a high temperature, and it takes work to move heat.

펌프가 물을 낮은 위치에서 높은 위치로 퍼올리는 기계라는 의미와 마찬가지로, 히트펌프란 열을 온도가 낮은 곳에서 온도가 높은 곳으로 이동시킬 수 있는 장치를 의미한다.Just as a pump is a machine that pumps water from a low position to a high position, a heat pump is a device that can transfer heat from a low temperature to a high temperature.

현실적으로 적용되는 히트펌프의 원리는 에어콘이라 불리우는 냉방장치의 역사이클로 적용된다. 보다 상세하게, 냉방전용의 에어콘은 실내에 설치된 실내기의 열교환기에서 열을 흡수하여 실외에 설치된 실외기의 열교환기를 이용하여 열을 방열시키는 원리이며, 히트펌프는 반대로 실외기의 열교환기에서 열을 흡수하여 실내에 설치된 실내기의 열교환기를 이용하여 열을 방열시키는 원리다.The principle of heat pumps that is practically applied is the reverse cycle of a cooling system called air conditioning. More specifically, the air conditioner for cooling is a principle that absorbs heat from the heat exchanger of the indoor unit installed indoors to dissipate heat using the heat exchanger of the outdoor unit installed outdoors, and the heat pump, on the contrary, absorbs heat from the heat exchanger of the outdoor unit. Principle of heat dissipation using heat exchanger of indoor unit installed indoors.

그러나, 히트펌프의 특성상 겨울철 에어컨을 거꾸로 돌리다 보면 실내에는 더운바람이 나가고 실외기 쪽으로는 찬바람이 나가므로, 외기온도가 영하권으로 근처에 머무는 겨울엔 실외기에 있는 열교환기 및 압축펌프에 착상, 서리 등으로 동파가 일어나며, 나아가 실외의 온도가 영하 5도 정도만 되면 효율이 40% 정도이고, 아예 작동을 멈추는 경우가 종종 발생하였다.However, when the air conditioner is turned upside down in the winter, the hot air goes out and the cold air goes out toward the outdoor unit. Freezing occurs, and when the outdoor temperature is about 5 degrees below zero, the efficiency is about 40% and the operation is often stopped.

위와 같은 문제점을 해결하기 위한 공지의 예로서, 통상의 회로구성에 응축과 증발 과정을 더하여 간헐적으로 제상운전을 수행하나 잦은 제상은 압축기에 무리를 주어 수명 단축을 초래하는 문제점이 발생되었다.
As a known example for solving the above problems, defrosting is performed intermittently by adding a condensation and evaporation process to a conventional circuit configuration, but frequent defrosting causes a problem in shortening the compressor due to excessive defrosting.

본 발명은 이러한 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 난방용팽창밸브로 유입되는 냉매의 온도를 열재생기에서 보정함으로서 팽창을 통해 과도한 냉생산을 억제하여 서리의 발생을 방지하고, 서리가 발생시 응축기로 유입되는 냉매의 온도를 선택적으로 더 높여 서리를 제거할 수 있는 제상기능을 갖는 히트펌프 냉난방시스템을 제공하는데 있다.
The present invention has been made to solve this problem, the object of the present invention is to compensate for the temperature of the refrigerant flowing into the expansion valve for heating in the heat regenerator to suppress excessive cold production through expansion to prevent the occurrence of frost, frost To provide a heat pump heating and cooling system having a defrost function to remove the frost by selectively increasing the temperature of the refrigerant flowing into the condenser when is generated.

상술한 목적을 달성하기 위한 본 발명은, 압축기, 열교환기, 난방용팽창밸브 및 냉방용팽창밸브, 수액기, 응축기, 액분리기로 이루어진 히트펌프에 있어서,The present invention for achieving the above object, in the heat pump consisting of a compressor, heat exchanger, expansion valve for heating and cooling expansion valve, receiver, condenser, liquid separator,

상기 난방용팽창밸브와 냉방용팽창밸브는 사용용도에 따라 냉매의 흐름을 선택적으로 유도하기 위하여 열교환기와 수액기 사이에 병열로 설치되고,The expansion valve for heating and expansion valve for cooling is installed in parallel between the heat exchanger and the receiver to induce the flow of the refrigerant selectively according to the intended use,

상기 열교환기와 난방용팽창밸브 사이에는 난방용팽창밸브를 통해 팽창된 냉매가 응축기를 통과시 서리의 발생을 방지하도록 열교환기를 통해 열교환된 냉매에 다시 열을 가하는 열재생기가 형성되되, 상기 열재생기는 압축기에서 배출되는 냉매의 일부가 열재생기의 내부로 유입되어 열이 축적되며, 열교환기를 통해 열교환된 냉매가 열재생기를 통과하며 열재생기 내부에 축적된 열에 의해 일정온도로 재가열되는 것을 특징으로 한다.Between the heat exchanger and the expansion valve for heating is formed a heat regenerator for applying heat back to the refrigerant heat-exchanged through the heat exchanger to prevent the refrigerant expanded through the heating expansion valve to pass through the condenser, the heat regenerator in the compressor Part of the discharged refrigerant is introduced into the heat regenerator to accumulate heat, and the refrigerant heat-exchanged through the heat exchanger passes through the heat regenerator, and is reheated to a predetermined temperature by the heat accumulated in the heat regenerator.

또한, 상기 열재생기의 내부온도를 일정하게 유지시키기 위하여 수액기와 직접 연결된 모세관을 더 포함하여 이루어진 것을 특징으로 한다.In addition, in order to maintain a constant internal temperature of the heat regenerator is characterized in that it further comprises a capillary tube directly connected to the receiver.

또한, 상기 응축기에 서리가 발생시 응축기를 통과하는 냉매의 온도를 높여 제상이 이루어지도록 열교환기의 내부에서 수액기로 직접 연결된 제상용배관이 형성되어 열교환기 내부의 냉매 일부가 수액기로 직접 유입되되, 유입을 제어하도록 제상용배관에 형성된 제상밸브를 더 포함하여 이루어진 것을 특징으로 한다.In addition, when the frost occurs in the condenser to form a defrost pipe connected directly to the receiver in the heat exchanger to increase the temperature of the refrigerant passing through the condenser to form a defrost, a portion of the refrigerant inside the heat exchanger is introduced directly into the receiver, inflow It further comprises a defrost valve formed in the defrost pipe to control the.

본 발명의 또 다른 목적 및 효과는 이하의 상세한 설명으로부터 명확하게 되고, 본 발명의 바람직한 실시예를 나타내는 상세한 설명 및 실시예는 본 발명의 범주를 제한하는 것이 아니다.
Further objects and effects of the present invention will become apparent from the following detailed description, and the detailed description and examples showing the preferred embodiments of the present invention are not intended to limit the scope of the present invention.

본 발명에 따른 히트펌프 냉난방시스템에 의하면, 난방용팽창밸브로 유입되는 냉매의 온도를 열재생기에서 보정함으로서 팽창을 통해 과도한 냉생산을 억제하여 서리의 발생을 방지하고, 서리가 발생시 응축기로 유입되는 냉매의 온도를 선택적으로 더 높여 서리를 제거할 수 있는 효과가 발생한다.
According to the heat pump cooling and heating system according to the present invention, by adjusting the temperature of the refrigerant flowing into the expansion valve for heating in the heat regenerator to prevent excessive cold production through expansion to prevent the occurrence of frost, when the frost occurs refrigerant entering the condenser By selectively increasing the temperature of the frost effect can be removed.

도 1은 본 발명에 따른 제상기능을 갖는 히트펌프 냉난방시스템의 개략적인 구성도.1 is a schematic configuration diagram of a heat pump heating and cooling system having a defrosting function according to the present invention.

히트펌프는 열을 흡수하고 방열하는 원리로서 통상 에어콘이라 불리우는 냉방장치의 역사이클로 생각하면 된다.The heat pump is a principle of absorbing heat and dissipating heat, and may be regarded as a reverse cycle of a cooling device commonly called an air conditioner.

즉, 냉방전용의 에어콘은 실내에 설치된 실내기의 열교환기에서 열을 흡수하여 실외에 설치된 실외기의 열교환기를 이용하여 열을 방열시키는 원리이며, 히트펌프는 반대로 실외기의 열교환기에서 열을 흡수하여 실내에 설치된 실내기의 열교환기를 이용하여 열을 방열시키는 원리다.In other words, the air conditioner for cooling only absorbs heat from the heat exchanger of the indoor unit installed indoors and dissipates heat using the heat exchanger of the outdoor unit installed outdoors. On the contrary, the heat pump absorbs heat from the heat exchanger of the outdoor unit and Principle of heat dissipation using heat exchanger of indoor unit installed.

구체적으로 히트펌프의 기본적인 구성요소는 압축기, 열교환기, 팽창밸브의 요소로 구분되며 작동유체인 냉매는 압축과 팽창에 따라 온도가 상승 및 하강하며, 액체에서 기체로, 기체에서 액체로 변화를 계속하면서 순환한다.Specifically, the basic components of the heat pump are divided into compressors, heat exchangers, and expansion valves. The refrigerant, which is a working fluid, rises and falls in temperature as it is compressed and expanded, and continues to change from liquid to gas and gas to liquid. Circulate

이하, 본 발명에 따른 하나의 바람직한 실시예를 첨부도면을 참조하여 상세히 설명한다. 먼저, 도면에 걸쳐 기능적으로 동일하거나, 유사한 부분에는 동일한 부호를 부여한다.Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. First, like reference numerals designate functionally identical or similar parts throughout the drawings.

도 1은 본 발명에 따른 제상기능을 갖는 히트펌프 냉난방시스템의 개략적인 구성도이다.1 is a schematic configuration diagram of a heat pump heating and cooling system having a defrosting function according to the present invention.

도 1을 참조하면, 본 발명에 따른 제상기능을 갖는 히트펌프 냉난방시스템은 순차적으로 배열된 압축기(10), 열교환기(20), 난방용팽창밸브(30) 및 냉방용팽창밸브(40), 수액기(50), 응축기(60), 액분리기(14)를 기본구성으로 하고 있다.Referring to Figure 1, the heat pump heating and cooling system having a defrosting function according to the present invention is a compressor 10, heat exchanger 20, the expansion valve 30 for heating and the expansion valve 40 for cooling, fluid The apparatus 50, the condenser 60, and the liquid separator 14 have a basic structure.

상기 압축기(10)는 냉매를 상온에서도 쉽게 액화될 수 있도록 고온고압의 상태로 압축시키는 역할을 수행한다.The compressor 10 serves to compress the refrigerant to a state of high temperature and high pressure so that the refrigerant can be easily liquefied even at room temperature.

이때, 상기 압축기(10)에서 압축된 고온고압의 냉매는 160 ~ 180℃로 가온된다.At this time, the high temperature and high pressure refrigerant compressed by the compressor 10 is heated to 160 ~ 180 ℃.

상기 압축기(10)에서 배출되는 고온고압의 냉매는 사방밸브(12)를 통해 유입 및 유출을 선택적으로 조절하여 난방 및 냉방기능을 수행한다.The high temperature and high pressure refrigerant discharged from the compressor 10 selectively controls inflow and outflow through the four-way valve 12 to perform heating and cooling functions.

먼저, 본 발명에 따른 제상기능을 갖는 히트펌프 냉난방시스템의 압축기(10)에서 배출되는 냉매를 이용하여 난방을 하는 과정을 설명한다.First, a process of heating by using a refrigerant discharged from the compressor 10 of the heat pump air conditioning system having a defrost function according to the present invention will be described.

상기 압축기(10)에서 압축된 고온고압의 냉매는 적절한 압력을 유지하며 열교환기(20)를 통과한다.The high temperature and high pressure refrigerant compressed by the compressor 10 passes through the heat exchanger 20 while maintaining an appropriate pressure.

상기 열교환기(20)를 통과하며 열교환되어 배출된 냉매는 55 ~ 65℃가 되고, 교환된 열은 난방용으로 사용된다.The refrigerant discharged through heat exchanger 20 through heat exchanger 20 becomes 55 to 65 ° C, and the exchanged heat is used for heating.

상기 난방용팽창밸브(30) 및 냉방용팽창밸브(40)는 열교환기(20)와 수액기(50) 사이에 병열로 설치되고, 사용용도에 따라 냉매의 흐름을 선택적으로 유도하기 위해 삼방밸브(70)(72)가 더 설치된다.The heating expansion valve 30 and the cooling expansion valve 40 are installed in parallel between the heat exchanger 20 and the receiver 50, three-way valve to selectively induce the flow of the refrigerant in accordance with the intended use ( 70 and 72 are further installed.

상기 열교환기(20)를 통과한 냉매는 난방용팽창밸브(30)로 유입되기 전 열교환기(20)와 난방용팽창밸브(30) 사이에 형성된 열재생기(80)로 유입된다.The refrigerant passing through the heat exchanger 20 is introduced into the heat regenerator 80 formed between the heat exchanger 20 and the heating expansion valve 30 before entering the heating expansion valve 30.

상기 열재생기(80)는 열교환기(20)에서 열교환되어 배출된 냉매를 재가열하여 75 ~ 85℃의 온도로 상승시키고, 이는 열교환기(20)에서 배출된 냉매의 온도를 상승시킴으로써 난방용팽창밸브(30)를 통해 팽창되어 냉각되는 냉매의 온도가 상승하게 되어 응축기(60)를 통과시 서리가 발생되는 것을 방지하는 역할을 한다.The heat regenerator 80 reheats the refrigerant discharged by heat exchange in the heat exchanger 20 to a temperature of 75 to 85 ° C., which increases the temperature of the refrigerant discharged from the heat exchanger 20 to expand the heating expansion valve ( The temperature of the refrigerant that is expanded and cooled through 30 is increased to prevent frost from occurring when passing through the condenser 60.

이때, 상기 열재생기(80)는 압축기(10)에서 배출되는 냉매의 일부가 열교환기(20)로 유입되기 전에 일부가 열재생기(80)의 내부로 유입되어 열이 축적되어 열교환기(20)를 통해 열교환된 냉매가 다시 열재생기(80)의 내부에서 열교환되어 온도가 상승하게 된다. At this time, the heat regenerator 80 is partially introduced into the heat regenerator 80 before the portion of the refrigerant discharged from the compressor 10 flows into the heat exchanger 20 to accumulate heat and heat exchanger 20. The refrigerant heat-exchanged through the heat exchanger again heats inside the heat regenerator 80 to increase the temperature.

바람직하게 상기 열재생기(80)는 내부의 온도를 일정하게 유지하기 위하여 수액기(50)와 직접 연결된 모세관(82)이 더 형성되어 압축기(10)에서 직접 열재생기(80)의 내부로 유입된 냉매를 모세관(82)을 통해 수액기(50)로 배출시켜 열재생기(80) 내부에 축적되는 열에 의해 온도가 상승하는 것을 방지하고, 모세관(82)을 통과하는 냉매는 저온저압의 상태로 감압되어 수액기(50)로 배출된다.Preferably, the heat regenerator 80 further includes a capillary tube 82 directly connected to the receiver 50 in order to maintain a constant temperature therein, which is directly introduced into the heat regenerator 80 from the compressor 10. The refrigerant is discharged to the receiver 50 through the capillary tube 82 to prevent the temperature from rising due to heat accumulated in the heat regenerator 80, and the refrigerant passing through the capillary tube 82 is reduced in pressure at a low temperature and low pressure. It is discharged to the receiver 50.

상기 열재생기(80)를 통과한 냉매는 난방용팽창밸브(30)에서 저온저압의 상태가 되어 수액기(50)로 유입되고, 수액기(50)에서 기체의 냉매만을 응축기(60)로 유입시키며, 응축기(60)에서 응축된 냉매는 액분리기(14)를 거쳐 다시 압축기(10)로 유입되고, 이러한 과정을 반복적으로 수행하여 난방을 하게 된다.The refrigerant passing through the heat regenerator 80 enters into the receiver 50 at a low temperature and low pressure in the expansion valve 30 for heating, and enters only the refrigerant of the gas into the condenser 60 from the receiver 50. The refrigerant condensed in the condenser 60 is introduced into the compressor 10 again through the liquid separator 14, and is repeatedly heated to perform this process.

이때, 상기 열재생기(80)를 통해 재가열한 냉매가 난방용팽창밸브(30)와 수액기(50)를 거쳐 응축기(60)로 유입시 응축기(60)에서 서리나 성애가 발생하면 이를 제거하기 위해 냉매의 온도를 높여 제상(除霜)이 이루어지도록 열재생기(80)의 내부에서 수액기(50)로 직접 연결된 제상용배관(90)이 형성되어 열재생기(80) 내부의 냉매 일부가 수액기(50)로 직접 유입되어 응축기(60)로 유입되는 냉매의 온도를 상승시키며, 제상용배관(90)으로 냉매가 흐르는 것을 제어하는 제상밸브(92)가 더 형성된다.At this time, when the refrigerant reheated through the heat regenerator 80 enters the condenser 60 through the expansion valve 30 and the receiver 50 for heating, if frost or frost occurs in the condenser 60, the refrigerant is removed to remove it. The defrosting pipe 90 connected directly to the receiver 50 is formed in the heat regenerator 80 to increase the temperature of the defroster, so that a part of the refrigerant in the heat regenerator 80 is received from the receiver. A defrost valve 92 is further formed to directly increase the temperature of the refrigerant flowing into the condenser 60 and directly flowing into the condenser 60, and to control the flow of the refrigerant into the defrost pipe 90.

본 발명에 따른 제상기능을 갖는 히트펌프 냉난방시스템을 이용하여 냉방을 하는 과정은 상기 압축기(10)에서 압축된 고온고압의 냉매가 상술한 난방과정의 역방향으로 흐르게 하여 이루어진다.The cooling using the heat pump cooling and heating system having a defrosting function according to the present invention is performed by allowing the refrigerant of the high temperature and high pressure compressed by the compressor 10 to flow in the reverse direction of the above-described heating process.

상기 압축기(10)에서 압축된 냉매는 사방밸브(12)를 통해 응축기(60)로 유입되고, 응축기(60)에서 응축, 액화된 냉매는 수액기(50)에서 액상냉매만 배출되며, 삼방밸브(72)에 의해 냉방용팽창밸브(40)로 유입된다,The refrigerant compressed by the compressor 10 flows into the condenser 60 through the four-way valve 12, and the refrigerant condensed and liquefied by the condenser 60 discharges only the liquid refrigerant from the receiver 50. Inflow to the cooling expansion valve 40 by 72,

상기 냉방용팽창밸브(40)를 통과한 냉매는 -15℃의 저온저압 상태를 유지하며 열교환기(20)로 유입되어 열교환하여 12 ~ 17℃의 온도로 배출되고, 열교환기(20)에서 교환된 열로 냉방을 하게 된다.The refrigerant passing through the cooling expansion valve 40 maintains a low temperature and low pressure of −15 ° C., enters the heat exchanger 20, exchanges heat, and is discharged at a temperature of 12 to 17 ° C., and is exchanged in the heat exchanger 20. Cooled by the heat.

상기 열교환기(20)를 통해 배출된 냉매는 사방밸브(12)를 통해 액분리기(14)로 유입된 후 다시 압축기(10)로 유입되며 이러한 과정을 반복적으로 수행하여 냉방을 하게 된다.The refrigerant discharged through the heat exchanger 20 flows into the liquid separator 14 through the four-way valve 12 and then flows back into the compressor 10. The cooling is performed by repeatedly performing this process.

즉, 전기 설명으로부터 명확해지듯이, 이 발명은 난방용팽창밸브(30)로 유입되는 냉매의 온도를 열재생기(80)에서 보정함으로서 팽창을 통해 과도한 냉생산을 억제하여 서리의 발생을 방지하고, 서리가 발생시 응축기(60)로 유입되는 냉매의 온도를 선택적으로 더 높여 서리를 제거할 수 있다.That is, as will be clear from the above description, the present invention compensates the temperature of the refrigerant flowing into the expansion valve 30 for heating in the heat regenerator 80 to prevent excessive cold production through expansion, thereby preventing the occurrence of frost, When the occurrence of the frost may be selectively increased to further increase the temperature of the refrigerant flowing into the condenser (60).

본 발명은 그 정신 또는 주요한 특징으로부터 일탈하는 일없이, 다른 여러 가지 형태로 실시할 수 있다. 그 때문에, 전술한 실시예는 모든 점에서 단순한 예시에 지나지 않으며, 한정적으로 해석해서는 안된다. 본 발명의 범위는 특허청구의 범위에 의해서 나타내는 것으로써, 명세서 본문에 의해서는 아무런 구속도 되지 않는다. 다시, 특허청구범위의 균등 범위에 속하는 변형이나 변경은, 모두 본 발명의 범위 내의 것이다.
The present invention may be embodied in many other forms without departing from the spirit or essential characteristics thereof. For this reason, the above-described embodiments are merely examples in all respects and should not be interpreted limitedly. The scope of the present invention is shown by the scope of the claims, and is not limited by the specification text. Modifications and variations falling within the scope of the appended claims all fall within the scope of the present invention.

* 도면의 주요 부분에 관한 부호의 설명 *
10 : 압축기 12 : 사방밸브
14 : 액분리기 20 : 열교환기
30 : 난방용팽창밸브 40 : 냉방용팽창밸브
50 : 수액기 60 : 응축기
70, 72 : 삼방밸브 80 : 열재생기
82 : 모세관 90 : 제상용배관
92 : 제상밸브Explanation of symbols on main parts of the drawings
10 compressor 12 four-way valve
14: liquid separator 20: heat exchanger
30: expansion valve for heating 40: expansion valve for cooling
50: receiver 60: condenser
70, 72: three-way valve 80: heat regenerator
82: capillary 90: defrost pipe
92: defrost valve

Claims (3)

압축기, 열교환기, 난방용팽창밸브 및 냉방용팽창밸브, 수액기, 응축기, 액분리기로 이루어진 히트펌프에 있어서,
상기 난방용팽창밸브와 냉방용팽창밸브는 사용용도에 따라 냉매의 흐름을 선택적으로 유도하기 위하여 열교환기와 수액기 사이에 병열로 설치되고,
상기 열교환기와 난방용팽창밸브 사이에는 난방용팽창밸브를 통해 팽창된 냉매가 응축기를 통과시 서리의 발생을 방지하도록 열교환기를 통해 열교환된 냉매에 다시 열을 가하는 열재생기가 형성되되, 상기 열재생기는 압축기에서 배출되는 냉매의 일부가 열재생기의 내부로 유입되어 열이 축적되며, 열교환기를 통해 열교환된 냉매가 열재생기를 통과하며 열재생기 내부에 축적된 열에 의해 일정온도로 재가열되는 것을 특징으로 하는 제상기능을 갖는 히트펌프 냉난방시스템.
In a heat pump consisting of a compressor, a heat exchanger, an expansion valve for heating and an expansion valve for cooling, a receiver, a condenser, and a liquid separator,
The expansion valve for heating and expansion valve for cooling is installed in parallel between the heat exchanger and the receiver to induce the flow of the refrigerant selectively according to the intended use,
Between the heat exchanger and the expansion valve for heating is formed a heat regenerator for applying heat back to the refrigerant heat-exchanged through the heat exchanger to prevent the refrigerant expanded through the heating expansion valve to pass through the condenser, the heat regenerator in the compressor Part of the discharged refrigerant is introduced into the heat regenerator to accumulate heat, and the refrigerant heat-exchanged through the heat exchanger passes through the heat regenerator and is reheated to a predetermined temperature by the heat accumulated in the heat regenerator. Having a heat pump air conditioning system.
제1항에 있어서,
상기 열재생기의 내부온도를 일정하게 유지시키기 위하여 수액기와 직접 연결된 모세관을 더 포함하여 이루어진 것을 특징으로 하는 제상기능을 갖는 히트펌프 냉난방시스템.
The method of claim 1,
And a capillary tube directly connected to the receiver to maintain a constant internal temperature of the heat regenerator.
제2항에 있어서,
상기 응축기에 서리가 발생시 응축기를 통과하는 냉매의 온도를 높여 제상이 이루어지도록 열교환기의 내부에서 수액기로 직접 연결된 제상용배관이 형성되어 열교환기 내부의 냉매 일부가 수액기로 직접 유입되되, 유입을 제어하도록 제상용배관에 형성된 제상밸브를 더 포함하여 이루어진 것을 특징으로 하는 제상기능을 갖는 히트펌프 냉난방시스템.
The method of claim 2,
When the frost occurs in the condenser, a defrosting pipe connected directly to the receiver is formed inside the heat exchanger to increase the temperature of the refrigerant passing through the condenser to perform defrosting so that a part of the refrigerant inside the heat exchanger flows directly into the receiver. Heat pump cooling and heating system having a defrost function, characterized in that further comprises a defrost valve formed in the defrost pipe.
KR1020110010783A 2011-02-07 2011-02-07 Heat pump cooling and heating system having defrosting function KR101245875B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104676962A (en) * 2013-11-28 2015-06-03 财团法人工业技术研究院 Cold and hot cogeneration heat pump equipment
CN108592452A (en) * 2018-04-17 2018-09-28 西安交通大学 A kind of CO2Air-conditioning heat pump removes defrosting system and its defrosting control method
CN111121229A (en) * 2019-12-18 2020-05-08 宁波奥克斯电气股份有限公司 Control method and control device of air conditioner, heat dissipation structure and air conditioner

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JPH0539412Y2 (en) * 1988-05-16 1993-10-06
JP3456871B2 (en) 1997-05-30 2003-10-14 エスペック株式会社 Refrigeration circuit with heat exchanger for refrigeration capacity control
JP2003214713A (en) 2002-01-23 2003-07-30 Matsushita Electric Ind Co Ltd Refrigeration cycle device
KR101075168B1 (en) * 2010-11-26 2011-10-19 한라공조주식회사 Method for defrost of heat pump system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104676962A (en) * 2013-11-28 2015-06-03 财团法人工业技术研究院 Cold and hot cogeneration heat pump equipment
CN104676962B (en) * 2013-11-28 2017-04-12 财团法人工业技术研究院 Cold and hot cogeneration heat pump equipment
CN108592452A (en) * 2018-04-17 2018-09-28 西安交通大学 A kind of CO2Air-conditioning heat pump removes defrosting system and its defrosting control method
CN111121229A (en) * 2019-12-18 2020-05-08 宁波奥克斯电气股份有限公司 Control method and control device of air conditioner, heat dissipation structure and air conditioner
CN111121229B (en) * 2019-12-18 2022-02-01 宁波奥克斯电气股份有限公司 Control method and control device of air conditioner, heat dissipation structure and air conditioner

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