KR20020042775A - Multifunctional energy-saving heat pump using four-way valve and heat exchanger - Google Patents
Multifunctional energy-saving heat pump using four-way valve and heat exchanger Download PDFInfo
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- KR20020042775A KR20020042775A KR1020020022091A KR20020022091A KR20020042775A KR 20020042775 A KR20020042775 A KR 20020042775A KR 1020020022091 A KR1020020022091 A KR 1020020022091A KR 20020022091 A KR20020022091 A KR 20020022091A KR 20020042775 A KR20020042775 A KR 20020042775A
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- heat
- way valve
- heat exchanger
- heat pump
- gas
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- 238000001816 cooling Methods 0.000 claims abstract description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims 1
- 238000004781 supercooling Methods 0.000 claims 1
- 238000009834 vaporization Methods 0.000 abstract description 9
- 230000008016 vaporization Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000009428 plumbing Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
- 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
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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 사방밸브와 열교환기를 이용한 다기능의 절전형 히트펌프에 관한 것이다.The present invention relates to a multifunctional power saving heat pump using a four-way valve and a heat exchanger.
고압가스냉매의 상태변화 특성을 냉동 냉장고나 에어컨장치에 응용하였던 히트펌프는 에너지이용효율인 평균COP가 4이상의 고효율 에너지변환장치로서 증발기의 기화열을 흡수하는 냉각작용을 이용하였으며, 상대적으로 응축기에서 방출되는 냉매의 액화열을 난방작용으로 이용하고자 하는 기술개발이 꾸준히 이어지고 있으나,Heat pump that applied the state change characteristics of high-pressure gas refrigerant to refrigeration refrigerator or air conditioner is a high-efficiency energy conversion device with average COP of 4 or more, which uses the cooling action to absorb vaporization heat of the evaporator, and is relatively released from the condenser The technology development to use the liquefied heat of the refrigerant to be a heating action has been continued,
겨울철 외부온도가 영하로 내려가면 기화열을 흡수할 수 없게되어 히트펌프의 COP는 급격히 감소하게되며 자체적인 난방을 못하고,When the outside temperature falls below freezing in winter, the heat of vaporization cannot be absorbed, so the COP of the heat pump decreases rapidly and does not heat itself.
보일러나 전기히터 등의 보조가열기를 추가로 설치하는데,Install additional auxiliary heaters such as boilers and electric heaters,
보조가열기로 투입되는 열이 히트펌프에 비하여 1/4 이하로 효율이 저조하였다.The heat input to the sub-heater was less than 1/4 of the efficiency of the heat pump.
본 발명은 히트펌프에서 증발기와 응축기의 기능을 전환하는데 4방향 밸브를 채용하고 열교환기의 배관과 실내공기 배출덕트를 복합적으로 걸합하여 자체 내부에서 만들어진 열과 냉을 상호 교환함으로 주위온도가 변해도 영향을 받지 않도록 하였으며,The present invention adopts a four-way valve to switch the function of the evaporator and the condenser in the heat pump and combines the heat exchanger piping and the indoor air exhaust duct to exchange heat and cold made inside itself so that the influence of the change in the ambient temperature may be affected. I did not receive it,
히트펌프의 COP를 6이상으로 향상시카는 고효율의 복합에너지 순환싸이클장치로,Improve COP of heat pump to 6 or higher
여름철에는 냉방용으로 겨울철에는 난방용으로 전환하여 다른 보조가열기가 필요 없이 냉/난방 겸용의 사방밸브와 열교환기 이용 다기능의 절전형 히트펌프가 제공된다.It is converted to cooling in summer and heating in winter, and a multi-functional energy-saving heat pump using four-way valve and heat exchanger for both cooling and heating is provided without the need for other auxiliary heaters.
Description
저온에서 기화열을 흡수하고 상온에서 쉽게 액체와 기체로 변하는 고압가스 냉매의 특성을 이용하는 고압가스 냉동장치는 냉장고나 에어컨에 응용되어 증발기의 냉각작용만으로 이용하였으며,The high pressure gas refrigeration system that absorbs the heat of vaporization at low temperature and uses the characteristics of the high pressure gas refrigerant which easily changes into liquid and gas at room temperature is applied to a refrigerator or air conditioner and used only by the cooling function of the evaporator.
최근 10여년 동안에 응축기에서 방출하는 응축열을 난방으로 이용하는 히트펌프장치가 개발되었으나,In recent decades, a heat pump device that uses condensation heat emitted from a condenser as heating has been developed.
겨울철 외부온도가 영하로 내려가는 추운 날은 기화열을 흡수할 수 없기 때문에 난방작용이 제대로 작동되지 않아서,On cold days when the outside temperature falls below freezing in winter, the heating is not working properly because it cannot absorb the heat of vaporization.
가스나 연료를 이중으로 소모시키는 보일러나 대용량의 전기히터 등의 보조 가열기를 추가로 설치하게 되었으며,Auxiliary heaters such as boilers or large-capacity electric heaters that double gas or fuel consumption were installed.
이러한 비경제적이고 에너지를 다량으로 소비하는 냉방/난방 겸용장치가 각 업체에서 개발되어 히트펌프로 판매되고 있다.These uneconomical and energy consuming cooling / heating combined devices have been developed by each company and sold as heat pumps.
입력대비 출력에너지 이용효율인 COP가 4이상으로 고효율의 에너지를 이용할 수 있는 히트펌프의 장점을 가진 냉방/난방의 복합에너지장치는 개발되지 않고 있는 실정이다.A cooling / heating complex energy device that has the advantage of a heat pump that can use high efficiency energy with COP of 4 or more, which is an efficiency of output energy usage compared to an input, is not developed.
히트펌프의 작동 원리는 열을 이동시키는 에너지변환장치이다.The working principle of a heat pump is an energy conversion device that transfers heat.
증발기는 기화열을 흡수할 수 있도록 온도가 높아야하며,The evaporator must be high temperature to absorb the heat of vaporization,
응축기는 응축열을 방출할 수 있도록 온도가 낮아야만 에너지 이용효율(COP)을 향상시키고 히트펌프의 장점을 활용할 수 있는 것이다.The condenser must be cold enough to dissipate the heat of condensation to improve its COP and take advantage of the heat pump.
증발기에 필요한 기화열과 응축기에 필요한 냉각을 주위온도에만 의존하지아니하고 히트펌프 자체에서 상대적으로 만들어진 열과 냉을 상대적으로 이용하기 위하여,In order to use the heat and cooling relatively made in the heat pump itself, not only the temperature of vaporization required for the evaporator and the cooling required for the condenser,
실내기와 실외기 기능을 응축기 증발기로 상호 전환할 수 있게 사방밸브를 설치하며, 응축기의 잔여 열로 압축기의 흡입가스를 가열시키고,Four-way valves are installed to switch the indoor and outdoor functions to the condenser evaporator, and the inlet gas of the compressor is heated by the remaining heat of the condenser.
증발기에서 잔류하는 저온저압액체냉매로 응축기를 냉각시키는 열교환기를 설치하여 저압측은 높이고 고압측은 낮추는 상대적인 열이동 작용으로 냉매압축부하를 감소시킴으로서 열에너지의 이용효율을 향상시키는 사방밸브와 열교환기 이용 다기능의 절전형 히트펌프를 제공함에 있다.Multifunctional energy-saving type using four-way valve and heat exchanger to improve the efficiency of thermal energy by reducing the refrigerant compression load by installing a heat exchanger that cools the condenser with low temperature and low pressure liquid refrigerant remaining in the evaporator. In providing a heat pump.
제 1도는 본 발명의 히프펌프가 난방기로 작동 할 때 유체냉매의 상태가 변하면서 흘러가는 순서와 열에너지의 이동관계를 나타낸 배관설비 계통도.1 is a plumbing system system diagram showing the flow relationship between the flow and heat energy flow while the state of the fluid refrigerant is changed when the bottom pump of the present invention operates as a heater.
제 2도는 본 발명의 히트펌프가 난방기로 작동 할 때 유체냉매의 상태가 변하면서 흘러가는 순서와 열에너지의 이동관계를 나타낸 배관설비 계통도.2 is a plumbing system system diagram showing the flow relationship between the flow of heat fluid and the movement of heat energy when the heat pump of the present invention operates as a heater.
제 3도는 기존의 냉방기 전용의 에어컨을 냉방/난방 복합기능의 히트펌프로 개조할 수 있도록 하나로 결합시킨 열교환기와 사방밸브 세트의 구성도.3 is a block diagram of a heat exchanger and a four-way valve set that combines an existing air conditioner dedicated to the air conditioner to be converted into a heat pump with a cooling / heating combined function.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
101 : 압축기 102 : 실외기(응축, 증발)101: compressor 102: outdoor unit (condensation, evaporation)
103 : 실내기(증발, 응축) 104 : 팽창변103: indoor unit (evaporation, condensation) 104: expansion valve
105 : 액체용 사방밸브 106 : 기체용 사방밸브105: four-way valve for liquid 106: four-way valve for gas
107 : 열교환기 108 : 공기배출용 덕트107: heat exchanger 108: air discharge duct
109 : 측로배관 110 : 전자밸브109: side piping 110: solenoid valve
111 : 고압스위치111: high pressure switch
본 발명은 에너지변환장치 중에서 인위적으로 투입하는 압축기 입력에 비하여 기화열 흡수냉각효율 또는 응축열방출난방 출력이 4배가 넘는 히트펌프의 장점을 최대로 유지하면서 냉방전용 에어컨을 냉/난방 복합기능의 절전형 히트펌프로 구성하는 것이다.The present invention is a power-saving heat pump for combined cooling / heating function of the air conditioner for cooling while maintaining the maximum advantages of the heat pump with the vaporization heat absorption cooling efficiency or the condensation heat dissipation heating output more than four times compared to the compressor input artificially input from the energy conversion device. It is to configure.
이하 첨부된 도면에 따라 본 발명의 구성과 작동원리를 설명하고자 한다.Hereinafter, the configuration and operation principle of the present invention according to the accompanying drawings.
제 1도는 본 발명의 히트펌프가 난방기로 작동 할 때 유체냉매의 상태가 변하면서 흘러가는 순서와 열에너지의 이동관계를 나타낸 배관설비 계통도이며,1 is a plumbing system system diagram showing the flow relationship between the flow of heat refrigerant and the movement of heat energy when the heat pump of the present invention operates as a heater,
제 2도는 본 발명의 히트펌프가 난방기로 작동 할 때 유체냉매의 상태가 변하면서 흘러가는 순서와 열에너지의 이동관계를 나타낸 배관설비 계통도이다.2 is a plumbing system system diagram showing the flow order and the heat energy transfer relationship while the state of the fluid refrigerant changes when the heat pump of the present invention operates as a heater.
도면에 표시된 바와 같이 장치의 구성은 압축기(101), 실외기(102), 실내기(103), 팽창변(104), 액체용 사방밸브(105), 기체용 사방밸브(106), 열교환기(107), 실내공기배출용덕트(108), 전자밸브(110), 고압스위치(111) 등의 독립된 기기와 부품들을 동튜브 배관으로 상호 결합되어 계통 내부는 완전 밀폐된 상태로 고압가스 냉매가 주입되어 있다.As shown in the figure, the configuration of the apparatus is a compressor 101, outdoor unit 102, indoor unit 103, expansion valve 104, four-way valve 105 for liquid, four-way valve 106 for gas, heat exchanger 107 Independent equipment and components, such as indoor air exhaust duct 108, solenoid valve 110, high pressure switch 111, are coupled to each other by copper tube piping, and the inside of the system is completely sealed and high-pressure gas refrigerant is injected. .
하나의 사방밸브(106)는 압축기(101)의 냉매가스토출측과 실외기(102)와 실내기(103)의 가스배관 사이에 기체용 사방밸브(106)가 설치되어 있고, 실외기(102)와 실내기(103)의 기능을 응축기와 증발기로 상호 전환할 수 있으며,One four-way valve 106 is provided with a gas four-way valve 106 between the refrigerant gas discharge side of the compressor 101 and the gas piping of the outdoor unit 102 and the indoor unit 103, the outdoor unit 102 and the indoor unit ( 103) can be switched between condenser and evaporator,
또 하나의 사방밸브(105)는 열교환기(107)의 액관과 실외기(102)와 실내기(103)의 액관 사이에 액체용 사방밸브(105)가 설치되어서 열교환기(107)의 가스관에서 냉각된 액체냉매를 냉방작용이나 난방작용에 상관없이 수동팽창변(104)과 모세관을 통해서 같은 방향으로 흐르게 하면서 실외기(102)와 실내기(103)의 기능을 전환한다.Another four-way valve 105 is a liquid four-way valve 105 is installed between the liquid pipe of the heat exchanger 107 and the liquid pipe of the outdoor unit 102 and the indoor unit 103 is cooled in the gas pipe of the heat exchanger 107 The function of the outdoor unit 102 and the indoor unit 103 is switched while allowing the liquid refrigerant to flow in the same direction through the manual expansion valve 104 and the capillary tube regardless of the cooling action or the heating action.
첫째, 난방용으로 작동할 때는 압축기(101)에서 토출되는 고온고압기체냉매는 기체용 사방밸브(106)를 거쳐서 실내기(103)에 들어가면서 난방열을 방출하고 고온의 액체로 응축이 되는데,First, when operating for heating, the high temperature and high pressure gas refrigerant discharged from the compressor 101 enters the indoor unit 103 through the four-way valve 106 for gas, dissipates heating heat and condenses into a high temperature liquid.
액체냉매는 액체용 사방밸브(105)를 통하여 열교환기(107)의 가스관에 열을 넘겨주고 저온의 액체냉매가 되어 수동팽창변(104)과 모세관으로 흐르며 실외기(102)에서 보다 더 많은 기화열을 흡수하면서 증발한다.The liquid refrigerant transfers heat to the gas pipe of the heat exchanger 107 through the four-way valve 105 for liquid, becomes a low-temperature liquid refrigerant, flows to the manual expansion valve 104 and the capillary tube, and absorbs more heat of vaporization from the outdoor unit 102. While evaporating.
실외기(102)에서 기화된 저온저압의 기체냉매는 기체용 사방밸브(106)를 거쳐 열교환기(107)의 가스관에는 액관의 열로 증발하여 과열증기상태로 압축기(101)에 흡입되는데, 이와 같이 열교환기(107)의 작용으로 실내의 난방열은 높이면서,압축기(101)의 토출측 압력은 낮추고 흡입측 압력은 높여서 압축부하를 적게 하여 절전이 되는 것이다.The gas refrigerant of low temperature and low pressure vaporized in the outdoor unit 102 is evaporated by the heat of the liquid pipe into the gas pipe of the heat exchanger 107 via the four-way valve 106 for gas, and is sucked into the compressor 101 in a superheated steam state. By the action of the machine 107, while increasing the heating heat of the room, the discharge side pressure of the compressor 101 is lowered and the suction side pressure is increased to reduce the compression load to save power.
둘째, 냉방용으로 작동할 때는 압축기(101)에서 토출되는 고온고압기체냉매는 기체용 사방밸브(106)를 거쳐서 실외기(102)에 들어가면서 외무에 응축열을 방출하고 고온의 액체로 응축이 되는데,Second, when operating for cooling, the high-temperature high-pressure gas refrigerant discharged from the compressor 101 enters the outdoor unit 102 through the gas four-way valve 106 to discharge the heat of condensation to the outside and condensed into a high-temperature liquid.
액체냉매는 액체용 사방밸브(105)를 통하여 열교환기(107)의 가스관에 열을 넘겨주고 저온의 액체냉매가 되어 수동팽창변(104)과 모세관으로 흐르며 실내기(1032)에서 보다 더 많은 기화열을 흡수하여 실내를 효율적으로 냉각시키면서 증발한다.The liquid refrigerant transfers heat to the gas pipe of the heat exchanger 107 through the four-way valve 105 for liquid, becomes a low temperature liquid refrigerant, flows into the manual expansion valve 104 and the capillary tube, and absorbs more heat of vaporization from the indoor unit 1032. Evaporate while cooling the room efficiently.
실내기(103)에서 기화된 저온저압의 기체냉매는 기체용 사방밸브(106)를 거쳐 열교환기(107)의 가스관에서 액관의 열로 증발하여 과열증기상태로 압축기(101)에 흡입되는데, 이와 같이 열교환기(107)의 작용으로 실내의 냉각효율은 높이면서, 압축기(101)의 흡입측 압력은 높이고 토출측 압력은 낮추어 압축부하를 적게 하여 절전이 되는 것이다. 제 3도는 기존의 냉방기 전용의 에어컨을 냉방/난방 복합기능의 히트펌프로 개조 할수 있도록 하나로 결합시킨 열교환기와 사방밸브 세트의 구성도 이다.The gas refrigerant of low temperature and low pressure vaporized in the indoor unit 103 is evaporated into the heat of the liquid pipe in the gas pipe of the heat exchanger 107 via the four-way valve 106 for the gas and sucked into the compressor 101 in a superheated steam state. By the action of the machine 107, while increasing the cooling efficiency of the room, the suction side pressure of the compressor 101 is increased and the discharge side pressure is lowered to reduce the compression load to save power. 3 is a configuration diagram of a heat exchanger and a four-way valve set combined with one to convert the existing air conditioner dedicated air conditioner to a heat pump of the cooling / heating combined function.
본 발명은 히트펌프에서 증발기와 응축기의 기능을 전환하는데 4방향 밸브를 채용하고 열교환기의 배관과 실내공기 배출덕트를 복합적으로 결합하여 자체 내부에서 만들어진 열과 냉을 상호 교환함으로 주위온도가 변해도 크게 영향을 받지 않도록 하였으며, 히트펌프의 COP를 6이상으로 향상시키는 고효율의 복합에너지 순환싸이클장치로, 여름철에는 냉방용으로 겨울철에는 난방용으로 전환하여 다른 보조가열기가 필요 없이 작동되는 냉/난방 겸용의 사방밸브와 열교환기 이용 다기능의 절전형 히트펌프이다.The present invention adopts a four-way valve to switch the function of the evaporator and the condenser in the heat pump and combines the heat exchanger piping and the indoor air exhaust duct in a complex manner, thereby exchanging heat and cold generated inside itself, which greatly influences the change in the ambient temperature. It is a high-efficiency complex energy circulation cycle device that improves the heat pump's COP to 6 or more. It is used for cooling in the summer and heating in the winter. Multifunctional energy-saving heat pump using valve and heat exchanger.
에너지변환장치 중에서 인위적으로 투입하는 입력에너지에 대비하여 출력으로 열흡수냉각효율 또는 열방출 난방효율인 COP가 4이상 되는 히트펌프 작동원리를 응용하여, 기존에어컨을 절전형으로 개조하기 때문에 설치공간과 자원을 절약할 수 있으며, 여름철에는 냉방용 겨울철에는 난방용으로 기능을 전환하여 사용자의 필요에 따라서 냉방/난방기로 편리하게 사용할 수 있는 고효율의 열역학에너지 변환장치로서, 사방밸브와 열교환기 이용 다기능의 절전형 히트펌프를 제공한다.The installation space and resources are applied because the existing air conditioner is converted into energy-saving type by applying the heat pump operation principle of COP of 4 or more, which is heat absorption cooling efficiency or heat dissipation heating efficiency, as an output in preparation for input energy artificially input among energy conversion devices. It is a high-efficiency thermodynamic energy converter that can be conveniently used as cooling / heater according to the user's needs by switching functions for heating in winter and cooling in summer. Provide a pump.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101034204B1 (en) * | 2004-01-13 | 2011-05-12 | 삼성전자주식회사 | Air conditioning system |
| KR101037480B1 (en) * | 2008-08-29 | 2011-05-26 | 김영관 | Heating and cooling system using the 3 way switching valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101034204B1 (en) * | 2004-01-13 | 2011-05-12 | 삼성전자주식회사 | Air conditioning system |
| KR101037480B1 (en) * | 2008-08-29 | 2011-05-26 | 김영관 | Heating and cooling system using the 3 way switching valve |
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