KR20110034099A - Heat pump system - Google Patents

Heat pump system Download PDF

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KR20110034099A
KR20110034099A KR1020090091478A KR20090091478A KR20110034099A KR 20110034099 A KR20110034099 A KR 20110034099A KR 1020090091478 A KR1020090091478 A KR 1020090091478A KR 20090091478 A KR20090091478 A KR 20090091478A KR 20110034099 A KR20110034099 A KR 20110034099A
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South Korea
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heat exchanger
heat
refrigerant
expansion valve
outdoor
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KR1020090091478A
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Korean (ko)
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KR101060511B1 (en
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진금수
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진금수
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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
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • 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
    • 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

Abstract

PURPOSE: A heat pump system is provided to prevent the mixture of liquid coolant into a thermal medium even if a super-cooling condenser becomes damaged. CONSTITUTION: A heat pump system comprises a cooling cycle(10) and a defrosting unit(20). The cooling cycle comprises a compressor(11), a four-way valve(12), an indoor heat exchanger(13), an expansion valve for cooling(14), an expansion valve for heating(15), an outdoor heat exchanger(16), and another four-way valve that are successively connected through refrigerant pipes(17). A refrigerant intake pipe(18) is interconnected between the four-way valve and the compressor. A super-cooling condenser(21) is installed between the expansion valve for cooling and the expansion valve for heating. A heat-absorption heat exchanger(22) is installed in the super-cooling condenser and connected to a heat storage tank(23) through supply and return pipes(24a,24b) equipped with a circulating pump(25). A heat-radiation heat exchanger(26) is installed in the outdoor heat exchanger. The defrosting unit is connected to the return pipe through thermal medium and return pipes(27a,27b).

Description

히트 펌프 시스템{HEAT PUMP SYSTEM}Heat Pump System {HEAT PUMP SYSTEM}

본 발명은 히트 펌프 시스템에 관한 것이며, 상세하게는 외기를 열원으로 하는 히트 펌프 시스템의 제상 및 성적계수의 향상에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump system, and more particularly, to an improvement in defrost and performance coefficient of a heat pump system using outside air as a heat source.

주지하는 바와 같이 히트 펌프 시스템은 압축기, 4웨이 밸브, 실내 열교환기, 팽창밸브, 실외 열교환기 및 상기 4웨이 밸브를 냉매 도관으로 순서대로 연결하고, 상기 4웨이 밸브와 압축기를 냉매 흡입도관으로 연결하여서, 가열운전시에는 4웨이 밸브를 압축기에서 압축된 고온·고압의 냉매증기가 실내 열교환기 측으로 흐르도록 조작하여서 고 온·고압의 냉매증기를 응축기로 작용하는 실내 열교환기에서 응축하여 그 응축열을 유체와 열교환시킴으로써 온수를 생성하거나 실내공기를 가열하여서 난방 또는 건조기능을 수행하고, 상기 실내 열교환기에서 응축된 고온·고압의 냉매액을 팽창밸브에서 팽창시킨 후 증발기로 작용하는 실외 열교환기에서 공기(외기)를 열원으로 하여 증발시켜 저온·저압의 냉매증기가 되게 한 후 압축기에 흡입되어 상기한 사이클을 반복하는 것이다.As is well known, the heat pump system connects a compressor, a four-way valve, an indoor heat exchanger, an expansion valve, an outdoor heat exchanger, and the four-way valve in order with a refrigerant conduit, and connects the four-way valve and the compressor with a refrigerant intake conduit. Thus, during the heating operation, the 4-way valve is operated so that the high temperature and high pressure refrigerant vapor compressed by the compressor flows to the indoor heat exchanger side, and the high temperature and high pressure refrigerant vapor is condensed in the indoor heat exchanger acting as a condenser to condense the heat of condensation. Heat or heat the fluid to generate hot water or heat the indoor air to perform the heating or drying function, expand the high-temperature and high-pressure refrigerant liquid condensed in the indoor heat exchanger in the expansion valve and then act as an evaporator in the outdoor heat exchanger Evaporate (outside air) as a heat source to produce refrigerant vapor of low temperature and low pressure, and then suck it into the compressor. Repeat one cycle.

그리고 냉각운전시에는 4웨이 밸브를 압축기에서 압축된 고온·고압의 냉매증기가 실외 열교환기 측으로 흐르도록 조작하여서 고온·고압의 냉매증기를 응축기로 작용하는 실외 열교환기에서 공기를 열원으로 하여 응축시키고, 상기 실외 열교환기에서 응축된 고온·고압의 냉매액을 팽창밸브에서 팽창시킨 후 증발기로 작용하는 실내 열교환기에서 냉매액을 증발시켜 유체에서 증발열을 흡수함으로써 냉수를 생성하거나 실내공기를 냉각하여 냉방 등을 하며, 실내 열교환기에서 증발된 저온·저압의 냉매증기는 압축기에 흡입되어 상기한 사이클을 반복하는 것이다.During the cooling operation, the 4-way valve is operated so that the high temperature and high pressure refrigerant vapor compressed by the compressor flows to the outdoor heat exchanger side, and condenses the air as a heat source in the outdoor heat exchanger which acts as a condenser. After expanding the high-temperature and high-pressure refrigerant liquid condensed in the outdoor heat exchanger in the expansion valve, the refrigerant liquid is evaporated in the indoor heat exchanger acting as an evaporator to absorb the heat of evaporation from the fluid to generate cold water or to cool the indoor air to cool it. The low temperature and low pressure refrigerant vapor evaporated from the indoor heat exchanger is sucked into the compressor and the above cycle is repeated.

상기한 히트 펌프 시스템은 가열운전시에 실외 열교환기에서 외기를 열원으로 하여 냉매액을 증발시킬 때 외기온도가 노점이하로 하강하였을 때에는 실외 열교환기의 표면에 서리가 맺힘으로써 냉매액의 증발이 양호하지 못하여 가열능력이 현저하게 떨어지기 때문에 실외 열교환기의 제상대책을 강구하고 있다.The heat pump system has a good evaporation of refrigerant liquid due to frost on the surface of the outdoor heat exchanger when the outdoor air temperature drops below the dew point when the outdoor liquid heat exchanger evaporates the refrigerant liquid as the heat source during the heating operation. Since the heating capacity is remarkably decreased, the countermeasure for defrosting the outdoor heat exchanger is taken.

상기 실외 열교환기의 제상대책 중 실용화된 주지방식은 역사이클 운전방식 즉 실외 열교환기를 응축기로 작용시키는 것이며, 상기 역사이클 운전방식을 채택할 경우 실내 열교환기에 보조 히터를 부설하여 보조 가열운전을 하는 것이다.Among the defrosting measures of the outdoor heat exchanger, a practically known method is to operate a reverse cycle operation method, that is, an outdoor heat exchanger as a condenser, and when the reverse cycle operation method is adopted, an auxiliary heater is installed in an indoor heat exchanger to perform auxiliary heating operation. .

그러나 상기한 역사이클 운전방식은 제상후 냉매압의 균압시간이 길고, 또한 제상시 보조 히터를 계속 사용하여야 함으로 전력 소모가 많아서 비경제적일 뿐만 아니라 열량 부족으로 쾌적한 난방이 곤란한 문제점이 있는 것이다.However, the reverse cycle operation method has a problem that it is not economical as well as uncomfortable heating due to lack of calories due to a long pressure equalization time of the refrigerant pressure after defrosting, and also to continue to use the auxiliary heater during defrosting.

본 발명의 발명자는 상기한 역사이클 운전 제상방식의 문제점을 해결한 히트 펌프 시스템을 제안하여 특허문헌 1 에 개시되어 있다.The inventor of this invention proposes the heat pump system which solved the problem of said reverse cycle operation defrost system, and is disclosed by patent document 1. As shown in FIG.

상기한 특허문헌 1 의 히트 펌프 시스템은 압축기, 4웨이 밸브, 실내 열교환 기, 냉각용 팽창밸브, 가열용 팽창밸브, 실외 열교환기 및 상기 4웨이 밸브를 냉매 도관으로 순서대로 연결하고, 상기 4웨이 밸브와 압축기를 냉매 흡입도관으로 연결한 기본 냉동사이클과; 상기 냉매 도관의 압축기와 4웨이 밸브 사이에 연결한 온수가열회로와; 상기 도관의 냉각용 팽창밸브와 가열용 팽창밸브 사이에 설치하여 열매체를 충전하고, 상기 온수 가열회로에 연결한 가열 열교환기 및 상기 냉매 도관의 냉각용 팽창밸브와 가열용 팽창밸브 사이에 설치한 과냉 응축기를 내장한 축열조와; 상기 축열조에 공급관 및 순환펌프가 설치된 귀환관으로 연결되고 상기 실외 열교환기의 흡입측에 설치한 가열 열교환기로 구성하여서, 가열 운전시 과냉 응축기에서 냉매액이 재응축될 때 그 응축열에 의하여 축열조내의 열매체를 직접 가열 하였다가 외기온이 노점이하로 하강할 경우 상기 가열된 열매체를 실외 열교환기의 흡입측에 설치한 가열 열교환기에 가열 운전의 중단없이 순환시켜 실외 열교환기에 흡입되는 외기를 예열함으로써 실외 열교환기에 서리가 맺히지 않거나 맺힌 서리를 제상토록한 것이다.The heat pump system of the patent document 1 is connected to the compressor, a four-way valve, an indoor heat exchanger, a cooling expansion valve, a heating expansion valve, an outdoor heat exchanger and the four-way valve in order to the refrigerant conduit, the four-way A basic refrigeration cycle that connects the valve and the compressor with a refrigerant suction conduit; A hot water heating circuit connected between the compressor of the refrigerant conduit and a 4-way valve; It is installed between the cooling expansion valve and the heating expansion valve of the conduit to fill the heat medium, and the superheater installed between the heating expansion valve connected to the hot water heating circuit and the cooling expansion valve and the heating expansion valve of the refrigerant conduit. A heat storage tank having a condenser; It consists of a heating heat exchanger which is connected to the heat storage tank by a return pipe provided with a supply pipe and a circulation pump and installed on the suction side of the outdoor heat exchanger, and when the refrigerant liquid is recondensed in the subcooled condenser during the heating operation, the heat medium in the heat storage tank by the condensation heat. If the outside air temperature drops below the dew point, the heated heating medium is circulated to the heating heat exchanger installed on the suction side of the outdoor heat exchanger without interruption of the heating operation to preheat the outside air sucked into the outdoor heat exchanger. The frost that has not formed or the frost that has formed is to be defrosted.

특허문헌1 ; KR 10-0486096(B1)Patent document 1; KR 10-0486096 (B1)

그러나 상기한 특허문헌 1 의 히트 펌프 시스템은 가열운전의 중단없이 실외 열교환기의 제상을 양호하게 함으로써 외기온이 낮을 때에도 성적계수가 향상되는 장점은 있으나, 축열조내에 과냉 응축기를 내장함과 아울러 열매체를 충전하였음으로 운전중단시 과냉 응축기가 동파되거나, 또한 압축기와 실외 열교환기 등의 고압부는 통상적으로 유닛화하는 것임으로 압축기 등이 진동할 때 과냉 응축기의 결합(용접)부분이 파손되어 냉매액과 열매체가 혼합됨으로써 시스템의 고장을 일으키는 다른 문제점을 발견하였다.However, the heat pump system of the patent document 1 has the advantage of improving the coefficient of performance even when the outside temperature is low by improving the defrost of the outdoor heat exchanger without interruption of the heating operation, but the built-in subcooled condenser in the heat storage tank and filling the heat medium Therefore, the subcooled condenser is frozen when the operation is stopped, or the high pressure part such as the compressor and the outdoor heat exchanger is usually unitized. When the compressor vibrates, the coupling (welding) part of the subcooled condenser is broken and the refrigerant liquid and the heat medium are damaged. Mixing has found other problems that cause the system to fail.

본 발명은 상기한 문제점을 시정하여, 과냉 응축기의 응축열에 의하여 열매체를 간접 가열하여 과냉 응축기의 파손시 냉매액과 열매체가 혼합되는 것을 방지한 히트 펌프 시스템을 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION An object of the present invention is to provide a heat pump system in which the heat medium is indirectly heated by the heat of condensation of a subcooled condenser to prevent the refrigerant liquid and the heat medium from mixing when the subcooled condenser breaks.

상기한 목적을 달성하기 위하여, 본 발명은 압축기, 4웨이 밸브, 실내 열교환기, 냉각용 팽창밸브, 가열용 팽창밸브, 실외 열교환기, 상기 4웨이 밸브를 냉매 도관으로 순서대로 연결하고, 상기 4웨이 밸브와 압축기를 냉매 흡입도관으로 연결한 냉동 사이클과; 상기 냉매 도관의 냉각용 팽창밸브와 가열용 팽창밸브 사이에 과냉 응축기를 설치하고, 상기 과냉 응축기에 흡열 열교환기를 설치함과 아울러 상기 흡열 열교환기에, 축열조를 순환 펌프 부설 공급관과 귀환관으로 연결하며, 상 기 실외 열교환기에 방열 열교환기를 설치하여 상기 귀환관에 열매체 공급관 및 열매체 귀환관으로 연결한 제상수단으로 구성한 것이다.In order to achieve the above object, the present invention is connected to the compressor, four-way valve, indoor heat exchanger, cooling expansion valve, heating expansion valve, outdoor heat exchanger, the four-way valve in order to the refrigerant conduit, A refrigeration cycle connecting the way valve and the compressor with a refrigerant suction conduit; A subcooled condenser is installed between the cooling expansion valve and the heating expansion valve of the refrigerant conduit, and an endothermic heat exchanger is installed in the subcooled condenser, and the endothermic heat exchanger is connected to the heat storage tank by a circulation pump installation supply pipe and a return pipe. The heat exchanger is installed in the outdoor heat exchanger, and the defrosting means is connected to the return pipe by a heat medium supply pipe and a heat medium return pipe.

이상과 같이 본 발명은 과냉 응축기에서 응축되는 냉매액의 재응축열과 흡열 열교환기를 간접 열교환하여 열매체를 가열 시킴으로써 과냉 응축기가 파손될 경우에도 냉매액이 열매체에 혼합되지 않음으로 시스템의 고장을 방지할 수 있게 되어 시스템의 신뢰성을 확보할 수 있고, 가열된 열매체의 보유열을 통상의 가열 운전시에도 실외 열교환기에 추가 공급할 수 있음으로 실외 열교환기에서 냉매액의 증발이 양호하여 성적계수를 향상 할 수 있는 것이다.As described above, the present invention can prevent the failure of the system because the refrigerant liquid is not mixed with the heat medium even when the supercooled condenser is damaged by reheating the heat medium by indirect heat exchange with the endothermic heat exchanger of the refrigerant liquid condensed in the subcooled condenser. The reliability of the system can be ensured, and the heat retained in the heated heat medium can be additionally supplied to the outdoor heat exchanger even during normal heating operation, so that the evaporation of the refrigerant liquid is good in the outdoor heat exchanger, thereby improving the coefficient of performance. .

도1은 본 발명의 실시예의 구성도로서, 본 발명은 냉동 사이클(10)과 제상수단(20)으로 대별된다. 1 is a configuration diagram of an embodiment of the present invention, which is roughly divided into a refrigeration cycle 10 and a defrosting means 20.

상기 냉동 사이클(10)은 압축기(11), 4웨이 밸브(12), 실내 열교환기(13), 냉각용 팽창밸브(14), 가열용 팽창밸브(15), 실외 열교환기(16) 및 상기 4웨이 밸브(12)를 냉매 도관(17)으로 순서대로 연결하고, 상기 4웨이 밸브(12)와 압축기(11)를 냉매 흡입도관(18)으로 연결하여서, 가열 운전시는 냉매를 화살표 실선으로, 냉각 운전시는 냉매를 화살표 점선으로 흐르도록 4웨이 밸브(12)를 조직하면 실내 열교환기(13)는 가열 운전시는 응축기로, 냉각 운전시는 증발기로 작용하여 유체(공기 또는 물)를 가열하거나 냉각하고, 한편 실외 열교환기(16)는 가열 운전시는 증발기로, 냉각 운전시는 응축기로 작용하며, 공냉식 또는 수냉식이 사용되는 것이다. The refrigeration cycle (10) is a compressor (11), four-way valve (12), indoor heat exchanger (13), cooling expansion valve (14), heating expansion valve (15), outdoor heat exchanger (16) and the The four-way valve 12 is connected in order to the refrigerant conduit 17, and the four-way valve 12 and the compressor 11 are connected to the refrigerant suction conduit 18, so that the refrigerant is connected to the solid line during the heating operation. In the cooling operation, the 4-way valve 12 is configured such that the refrigerant flows through the dotted line of the arrow, and the indoor heat exchanger 13 acts as a condenser during the heating operation and an evaporator during the cooling operation to generate fluid (air or water). The outdoor heat exchanger 16 serves as an evaporator during the heating operation and a condenser during the cooling operation, and air or water cooling is used.

상기 제상수단(20)은 상기 냉매 도관(17)의 냉각용 팽창밸브(14)와 가열용 팽창밸브(15)사이에 과냉 응축기(21)를 설치하고, 상기 과냉 응축기(21)에 흡열 열교환기(22)를 상기 과냉 응축기(21)와 열교환할 수 있게 설치하여 상기 흡열 열교환기(22)에, 열매체를 충전한 축열조(23)를 순환 펌프(25)를 부설한 공급관(24a)과 귀환관(24b)으로 연결하며, 상기 실외 열교한기(16)에 방열 열교환기(26)를 일체로 또는 별개로 설치하여 상기 귀환관(24b)에 열매체 공급관(27a) 및 열매체 귀환관(24b)으로 연결한 것이다.The defrosting means 20 is provided with a subcooled condenser 21 between the cooling expansion valve 14 and the heating expansion valve 15 of the refrigerant conduit 17, the endothermic heat exchanger 21 in the subcooled condenser 21 A supply pipe 24a and a return pipe in which a heat storage tank 23 in which a heat medium is filled in the endothermic heat exchanger 22 and a circulation pump 25 are installed so as to be heat exchanged with the subcooled condenser 21. And a heat radiating heat exchanger (26) integrally or separately installed in the outdoor heat bridge (16) and connected to the return pipe (24b) by a heat medium supply pipe (27a) and a heat medium feedback tube (24b). It is.

그리고 상기 열매체 공급관(27a)과, 귀환관(24b)의 상기 열매체 공급관 및 귀환관(27a)(27b)의 연결부 사이에 솔레노이드 밸브(28a)(28b)를 각각 설치하고, 상기 열매체 귀환관(27b)에는 귀환관(24b) 측으로 열리는 체크밸브(29)를 설치하며, 상기 냉매 도관(17)의 실외 열교환기(16)의 출구측에 온도센서(TS1) 또는 압력센서를 설치한 것이다.And solenoid valves 28a and 28b are respectively provided between the heat medium supply pipe 27a and the connection part of the heat medium supply pipe and the return pipe 27a, 27b of the return pipe 24b, and the heat medium return pipe 27b. ) Is provided with a check valve (29) that opens to the return tube (24b), the temperature sensor (TS1) or a pressure sensor is installed on the outlet side of the outdoor heat exchanger (16) of the refrigerant conduit (17).

상기한 제상수단(20)은 가열 운전 또는 냉각 운전시 실내 열교환기(13) 또는 실외 열교환기(16)에서 응축된 냉매액이 과냉 응축기(21)에서 과냉되면서 그 응축열에 의하여 흡열 열교환기(22)를 순환하는 열매체를 가열하여 축열조(23)에 저장하였다가 가열 운전시 실외 열교환기(16)에서 냉매액의 증발이 저조할 때 가열된 열매체를 방열 열교환기(26)에 순환시킴으로써 실외 열교환기(16)를 제상하거나, 열매체의 보유열을 실외 열교환기(16)에 열전달함으로써 냉매액의 증발을 양호하게 하는 것이다.The defrosting means 20 is an endothermic heat exchanger 22 by the heat of condensation while the refrigerant liquid condensed in the indoor heat exchanger 13 or the outdoor heat exchanger 16 is supercooled in the subcooled condenser 21 during the heating operation or the cooling operation. ) Is heated in the heat storage tank 23 and stored in the heat storage tank 23, and when the evaporation of the refrigerant liquid is low in the outdoor heat exchanger 16 during the heating operation, the heated heat medium is circulated to the heat radiating heat exchanger 26 to heat the outdoor heat exchanger. Defrost (16) or heat transfer of the heat of retention of the heat medium to the outdoor heat exchanger (16) improves the evaporation of the refrigerant liquid.

상기한 실외 열교환기(16)는 주지된 핀 튜브형(Fin & Tube)으로 형성하고, 그 전열관은 지그재그로 형성하여 수직으로 배치하며, 방열 열교환기(26)의 전열관도 지그재그로 형성하여 상기 실외 열교환기(16)의 전열관 사이 사이에 균등간격으로 배치하여서 실외 열교환기(16)에 균일한 열전달을 할 수 있게 함으로써 냉매액의 증발 효율을 양호하게 한 것이다.The outdoor heat exchanger 16 is formed in a well-known fin tube (Fin & Tube), the heat transfer tube is formed in a zigzag vertically arranged, the heat transfer tube of the heat dissipation heat exchanger 26 is also formed in a zigzag to the outdoor heat exchange The evaporation efficiency of the refrigerant liquid is improved by arranging at equal intervals between the heat transfer tubes of the base 16 to allow uniform heat transfer to the outdoor heat exchanger 16.

그리고 상기 냉매 흡입도관(18)에 바이패스 도관(41)을 설치하여 상기 바이패스 도관(41)에 상기 축열조(23)에 내장되는 냉매증기 가열 열교환기(42)를 설치하고, 상기 바이패스 도관(41)의 입구측과 상기 냉매 흡입도관(18)의 바이패스 도관(41) 연결부 후방에 솔레노이드 밸브(42a)(42b)를 각각 설치하여 냉매 흡입도관(18)에 설치한 온도센서(TS2)의 출력신호에 의하여 선택적으로 개폐하여, 즉 압축기(11)에 흡입되는 냉매증기의 온도가 낮을 때 솔레노이드 밸브(42b)는 폐쇄하고 솔레노이드 밸브(42a)는 개방하여 압축기(11)에 흡입되는 냉매증기를 냉매증기 가열 열교환기(42)를 경유하여 가열함으로써 압축기(11)에 액백 및 액격이 발생되는 것을 양호하게 방지한 것이다.In addition, a bypass conduit 41 is installed in the refrigerant suction conduit 18, and a refrigerant vapor heating heat exchanger 42 embedded in the heat storage tank 23 is installed in the bypass conduit 41. A temperature sensor (TS2) installed in the refrigerant suction conduit (18) by installing solenoid valves (42a) and (42b) respectively at the inlet side of the (41) and behind the bypass conduit (41) connection of the refrigerant suction conduit (18). Selectively open and close according to the output signal of the refrigerant vapor, ie, when the temperature of the refrigerant vapor sucked into the compressor 11 is low, the solenoid valve 42b is closed and the solenoid valve 42a is opened to allow the refrigerant vapor to be sucked into the compressor 11. Is heated via the refrigerant vapor heating heat exchanger (42) to prevent the liquid bag and the liquid gap from occurring in the compressor (11).

이상과 같은 본 발명의 가열운전 및 냉각운전은 종래와 동일하게하며, 상기와 같이 가열운전 또는 냉각운전을 할 때 과냉 응축기(21)에서 냉매액을 과냉하여 그 응축열에 의하여 흡열 열교환기(22)를 순환하는 열매체를 가열하여 축열조(23)에 저장하였다가 상기 냉매 도관(17)의 실외 열교환기(16)의 출구측에 설치한 온도 센서(TS1) 등의 검출신호 즉 외기온이 노점이하로 하강하여 실외 열교환기(16)에 서리가 맺히거나 또는 실외 열교환기(16)에서 냉매액의 증발이 저조할 때 솔레노이드밸브(28b)는 폐쇄하고 솔레노이드 밸브(28a)를 개방하여 흡열 열교환기(22)에서 가열된 열매체를 실외 열교환기(16)에 설치한 방열 열교환기(26)에 순환시킴으로써 실외 열교환기(16)를 제상하거나 냉매액의 증발을 양호하게 한 것이다.As described above, the heating operation and the cooling operation of the present invention are the same as in the prior art, and the endothermic heat exchanger 22 is formed by subcooling the refrigerant liquid in the subcooled condenser 21 during the heating operation or the cooling operation as described above. Heating signal circulating in the heat storage tank 23 is stored in the heat storage tank 23, and the detection signal of the temperature sensor TS1 and the like installed on the outlet side of the outdoor heat exchanger 16 of the refrigerant conduit 17, that is, the outside air temperature drops below the dew point. When the frost forms on the outdoor heat exchanger 16 or when the evaporation of the refrigerant liquid in the outdoor heat exchanger 16 is low, the solenoid valve 28b is closed and the solenoid valve 28a is opened to open the endothermic heat exchanger 22. By circulating the heat medium heated in the heat dissipation heat exchanger 26 provided in the outdoor heat exchanger 16, the outdoor heat exchanger 16 is defrosted or the evaporation of the refrigerant liquid is improved.

상기와 같이 과냉 응축기(21)에서 생성한 재응축열을 실외 열교환기(16)에 열 전달할 때 그 재응축열을 흡열 열교환기(22)를 매개로 간접 열전달함으로써 과냉 응축기(21)가 파손되어도 냉매액이 열매체에 혼합되지 않게 됨으로써 시스템의 파손을 방지하여 시스템의 신뢰성을 향상하고, 또한 실외 열교환기(16)에서 냉매액의 증발이 양호함으로 성적계수를 향상 시킬 수 있는 것이다.As described above, when the recondensation heat generated by the subcooled condenser 21 is transferred to the outdoor heat exchanger 16, the recondensation heat is indirectly transferred through the endothermic heat exchanger 22, so that the refrigerant liquid is damaged even if the subcooled condenser 21 is damaged. By not mixing with the heat medium, it is possible to prevent breakage of the system to improve the reliability of the system, and also to improve the coefficient of performance due to good evaporation of the refrigerant liquid in the outdoor heat exchanger 16.

도 1은 본 발명의 실시예의 구성도1 is a block diagram of an embodiment of the present invention

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

10 : 냉동 사이클 13 : 실내 열교환기 16: 실외 열교환기10: refrigeration cycle 13: indoor heat exchanger 16: outdoor heat exchanger

20 : 제상수단 21 : 과냉 응축기 22 : 흡열 열교환기20 defrosting means 21 subcooled condenser 22 endothermic heat exchanger

23 : 축열조 26 : 방열 열교환기23: heat storage tank 26: heat dissipation heat exchanger

Claims (4)

압축기, 4웨이 밸브, 실내 열교환기, 냉각용 팽창밸브, 가열용 팽창밸브, 실외 열교환기, 상기 4웨이 밸브를 냉매 도관으로 순서대로 연결하고, 상기 4웨이 밸브와 압축기를 냉매 흡입도관으로 연결한 냉동 사이클과; 상기 냉매 도관의 냉각용 팽창밸브와 가열용 팽창밸브 사이에 과냉 응축기를 설치하고, 상기 과냉 응축기에 흡열 열교환기를 설치함과 아울러 상기 흡열 열교환기에, 축열조를 순환 펌프 부설 공급관과 귀환관으로 연결하며, 상기 실외 열교환기에 방열 열교환기를 설치하여 상기 귀환관에 열매체 공급관 및 열매체 귀환관으로 연결한 제상수단으로 구성한 히트 펌프 시스템Compressor, 4-way valve, indoor heat exchanger, cooling expansion valve, heating expansion valve, outdoor heat exchanger, the 4-way valve in order to the refrigerant conduit, and the 4-way valve and the compressor by the refrigerant suction conduit A refrigeration cycle; A subcooled condenser is installed between the cooling expansion valve and the heating expansion valve of the refrigerant conduit, and an endothermic heat exchanger is installed in the subcooled condenser, and the endothermic heat exchanger is connected to the heat storage tank by a circulation pump installation supply pipe and a return pipe. A heat pump system comprising a defrosting means provided with a heat dissipating heat exchanger in the outdoor heat exchanger and connected to the return pipe by a heat medium supply pipe and a heat medium return pipe. 제 1항에 있어서, 실외 열교환기의 전열관과 방열 열교환기의 전열관을 각각 지그재그로 형성하여 핀에 수직으로 배치함과 아울러 방열 열교환기의 전열관을 실외 열교환기의 전열관 사이 사이에 균등간격으로 배치한 히트 펌프 시스템The heat exchanger tube of the outdoor heat exchanger and the heat exchanger tube of the heat dissipation heat exchanger are zigzag and arranged vertically on the fins, and the heat transfer tube of the heat exchanger heat exchanger is equally spaced between the heat exchanger tubes of the outdoor heat exchanger. Heat pump system 제 1항에 있어서, 냉매 흡입도관에 바이패스 도관을 설치하여 상기 바이패스도관에 축열조에 내장되는 냉매증기 가열 열교환기를 설치한 히트 펌프 시스템The heat pump system according to claim 1, wherein a bypass conduit is provided in the refrigerant suction conduit, and a refrigerant vapor heating heat exchanger is installed in the heat storage tank. 제 1항에 있어서, 실외 열교환기는 공냉식과 수냉식 중에서 선택되는 히트 펌프 시스템The heat pump system of claim 1, wherein the outdoor heat exchanger is selected from air cooled and water cooled.
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WO2014148704A1 (en) * 2013-03-22 2014-09-25 (주)지산에너텍 Hybrid air source heat pump system
KR101502952B1 (en) * 2013-04-05 2015-03-16 김형조 System for Cycling Refrigerant of Heat Pump
CN106765688A (en) * 2016-11-15 2017-05-31 珠海格力电器股份有限公司 The outdoor unit of heat-reclamation multi-compressors system and the heat-reclamation multi-compressors system with it

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US20240068714A1 (en) * 2022-08-30 2024-02-29 Daikin Comfort Technologies Manufacturing, LP Thermal energy reservoirs and heat pump systems

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JP2000213834A (en) 1999-01-20 2000-08-02 Fujitsu General Ltd Air conditioner
KR100389269B1 (en) 2001-02-22 2003-06-27 진금수 Heat pump system
JP2004293889A (en) 2003-03-26 2004-10-21 Mitsubishi Heavy Ind Ltd Ice thermal storage unit, ice thermal storage type air conditioner and its operating method

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WO2014148704A1 (en) * 2013-03-22 2014-09-25 (주)지산에너텍 Hybrid air source heat pump system
KR101502952B1 (en) * 2013-04-05 2015-03-16 김형조 System for Cycling Refrigerant of Heat Pump
CN106765688A (en) * 2016-11-15 2017-05-31 珠海格力电器股份有限公司 The outdoor unit of heat-reclamation multi-compressors system and the heat-reclamation multi-compressors system with it
CN106765688B (en) * 2016-11-15 2022-08-02 珠海格力电器股份有限公司 Outdoor unit of heat recovery multi-split air conditioner system and heat recovery multi-split air conditioner system with outdoor unit

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