KR20210007667A - a systme for cascade heat pump with defrosting function - Google Patents

a systme for cascade heat pump with defrosting function Download PDF

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KR20210007667A
KR20210007667A KR1020190084505A KR20190084505A KR20210007667A KR 20210007667 A KR20210007667 A KR 20210007667A KR 1020190084505 A KR1020190084505 A KR 1020190084505A KR 20190084505 A KR20190084505 A KR 20190084505A KR 20210007667 A KR20210007667 A KR 20210007667A
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temperature
heat exchanger
low
heat
cascade
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KR1020190084505A
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KR102228578B1 (en
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안천규
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안천규
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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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles

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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

The present invention relates to a cascade heat pump system with a defrosting function which can uniformly operate a high temperature-side cycle regardless of an ambient temperature. The cascade heat pump system with a defrosting function comprises a first refrigerant cycle and a second refrigerant cycle connected to a cascade heat exchanger. The first refrigerant cycle includes: a high temperature-side compressor to compress a first heating medium; a high temperature-side heat exchanger connected to an outlet of the high temperature-side compressor to transfer a heat source of the first heating medium to a high-temperature tank; a high temperature-side expansion valve to expand the first heating medium discharged from the high temperature-side compressor; a low-temperature tank wherein one side thereof is connected to the high temperature-side expansion valve and the other side thereof is connected to the cascade heat exchanger; and the cascade heat exchanger connected to the low-temperature tank and connected to an inlet side of the high temperature-side compressor. The second refrigerant cycle includes: a low temperature-side compressor to compress a second heating medium; the cascade heat exchanger connected to an outlet of the low temperature-side compressor; a low temperature-side expansion valve to expand the second heating medium passing through the cascade heat exchanger; and a low temperature-side heat exchanger communicating with the low temperature-side expansion valve. The high-temperature tank and the low-temperature tank are connected to a radiator having a fan. The radiator is connected to the high-temperature tank and the low-temperature tank by a supply pipe having a check valve.

Description

제상기능을 갖는 캐스케이드 히트펌프 시스템{a systme for cascade heat pump with defrosting function}Cascade heat pump system with defrosting function {a systme for cascade heat pump with defrosting function}

본 발명은 캐스케이드 열교환기로 연결되는 제1냉매싸이클과 제2냉매싸이클로 이루어지고, 상기 제1냉매싸이클은, 제1열매체가 압축되는 고온측 압축기와, 상기 고온측 압축기의 출구에 연결되어 고온탱크에 제1열매체의 열원을 전달하는 고온측 열교환기와, 상기 고온측 열교환기에서 토출된 제1열매체를 팽창시키는 고온측 팽창밸브와, 일측은 고온측 팽창밸브에 타측은 캐스케이드 열교환기에 연결되는 저온탱크와, 상기 저온탱크와 연결되면서 고온측 압축기의 입구측에 연결되는 캐스케이드 열교환기로 이루어지고, 상기 제2냉매싸이클은, 제2열매체를 압축시키는 저온측 압축기와, 상기 저온측 압축기의 출구에 연결되는 캐스케이드 열교환기와, 상기 캐스케이드 열교환기를 통과한 제2열매체를 팽창시 키는 저온측 팽창밸브와, 상기 저온측 팽창밸브와 연통되어 저온측 열교환기로서 이루어지고, 상기 고온탱크와 저온탱크는 팬을 갖는 라디에이터에 각각 연결되고, 상기 라디에이터는 고온탱크와 저온탱크에 펌프와 첵밸브를 갖는 공급관로로 각각 연결되는 제상기능을 갖는 캐스케이드 히트펌프 시스템에 관한 것이다.The present invention consists of a first refrigerant cycle and a second refrigerant cycle connected to a cascade heat exchanger, wherein the first refrigerant cycle includes a high-temperature compressor in which the first heat medium is compressed, and is connected to an outlet of the high-temperature compressor to provide a high-temperature tank. A high-temperature heat exchanger that transfers the heat source of the first heat exchanger, a high-temperature expansion valve that expands the first heat medium discharged from the high-temperature heat exchanger, and a low-temperature tank connected to a high-temperature expansion valve on one side and a cascade heat exchanger on the other side. , A cascade heat exchanger connected to the low temperature tank and connected to the inlet side of the high temperature compressor, wherein the second refrigerant cycle includes a low temperature compressor for compressing a second heat medium, and a cascade connected to an outlet of the low temperature compressor A heat exchanger, a low-temperature expansion valve for expanding the second heat medium that has passed through the cascade heat exchanger, and a low-temperature-side heat exchanger in communication with the low-temperature expansion valve, and the high-temperature tank and the low-temperature tank are radiators having a fan. Each of the radiators is connected to a cascade heat pump system having a defrost function that is connected to the high-temperature tank and the low-temperature tank by a supply line having a pump and a check valve.

일반적으로 히트 펌프는 압축기, 4방밸브, 실내 열교환기, 팽창밸브, 실외 열교환기 및 상기 4방밸브를 도관으로 순서대로 연결하고, 상기 4방밸브와 압축기를 흡입도관으로 연결하여 구성되되, 난방운전시에는 4방밸브를 압축기에서 압축된 고온ㆍ고압의 냉매증기가 실내 열교환기 측으로 흐르도록 조작하여 고온ㆍ고압의 냉매증기를 응축기로 작용하는 실내 열교환기에서 응축하여 그 응축열을 유체와 열교환시킴으로써 온수를 생성하거나 실내공기를 가열하여서 난방 또는 건조기능을 수행하고, 상기 실내 열교환기에서 응축된 고온ㆍ고압의 냉매를 팽창밸브에서 팽창시킨 후 증발기로 작용하는 실외 열교환기에서 공기(외기)를 열원으로 하여 증발시켜 저온ㆍ저압의 냉매증기가 되게 한 후 압축기에 흡입되어 상기한 사이클을 반복하는 것이다.In general, a heat pump is configured by sequentially connecting a compressor, a four-way valve, an indoor heat exchanger, an expansion valve, an outdoor heat exchanger, and the four-way valve in a conduit, and connecting the four-way valve and the compressor with a suction conduit. During operation, a four-way valve is operated so that the high-temperature and high-pressure refrigerant vapor compressed by the compressor flows to the indoor heat exchanger, and the high-temperature and high-pressure refrigerant vapor is condensed in the indoor heat exchanger acting as a condenser, and the heat of condensation is exchanged with fluid. Generates hot water or heats indoor air to perform a heating or drying function, expands the high-temperature/high-pressure refrigerant condensed in the indoor heat exchanger at the expansion valve, and then supplies air (outdoor air) from the outdoor heat exchanger acting as an evaporator. As a result, it is evaporated to form a low-temperature/low-pressure refrigerant vapor, and is sucked into the compressor to repeat the above cycle.

그리고, 냉방운전시에는 4방밸브를 압축기에서 압축된 고온ㆍ고압의 냉매증기가 실외 열교환기 측으로 흐르도록 조작하여 고온ㆍ고압의 냉매증기를 응축기로 작용하는 실외 열교환기에서 공기를 열원으로 하여 응축시키고, 상기 실외 열교환기에서 응축된 고온ㆍ고압의 냉매를 팽창밸브에서 팽창시킨 후 증발기로 작용하는 실내 열교환기에서 냉매를 증발시켜 유체에서 증발열을 흡수함으로써 냉수를 생성하거나 실내공기를 냉각하여 냉방 등을 하며, 실내 열교환기에서 증발된 저온ㆍ저압의 냉매증기는 압축기에 흡입되어 상기한 사이클을 반복하는 것이다.And, during cooling operation, a four-way valve is operated so that the high-temperature and high-pressure refrigerant vapor compressed by the compressor flows to the outdoor heat exchanger, and the high-temperature and high-pressure refrigerant vapor is condensed using air as a heat source in the outdoor heat exchanger acting as a condenser. The high-temperature/high-pressure refrigerant condensed in the outdoor heat exchanger is expanded by the expansion valve, and then the refrigerant is evaporated in the indoor heat exchanger acting as an evaporator to absorb the evaporation heat from the fluid, thereby generating cold water or cooling indoor air for cooling, etc. In addition, the low-temperature/low-pressure refrigerant vapor evaporated in the indoor heat exchanger is sucked into the compressor and the above cycle is repeated.

또한, 상기 히트펌프방식을 이원 사이클에 적용하면, 난방운전모드에서 안정적이고 지속적인 성능을 나타내기 위해 채택한다.In addition, when the heat pump method is applied to the binary cycle, it is adopted to show stable and continuous performance in the heating operation mode.

이와같은 기술과 관련되어 종래의 특허 제1423494호에 냉동사이클 히트펌프시스템용 캐스케이드 열교환기의 기술이 제시되고 있으며 그 구성은 도1에서와 같이, 이원 냉동사이클 히트펌프시스템용 캐스케이드 열교환기(300)에 있어서, 상기 이원 냉동사이클 히트펌프시스템의 고온부 사이클(100)과 저온부 사이클(200) 사이에 연결되어 사용처의 설정된 온수온도에 따라 선택적으로 열교환되되, 상기 저온부 사이클(200)의 냉매와 고온부 사이클(100)의 냉매가 상호 열교환되도록 일측면에 고온부 사이클(100)과 연결되는 고온부 유입/배출구(30,31)와, 상기 저온부 사이클(200)과 연결되는 저온부 제 1 유입/배출구(40,41)가 각각 형성되는 제 1 판형 열교환기와;In connection with such a technology, a technology of a cascade heat exchanger for a refrigeration cycle heat pump system is proposed in conventional patent No. 1423494, and the configuration is as shown in FIG. 1, a cascade heat exchanger 300 for a dual refrigeration cycle heat pump system. In the case, it is connected between the high temperature part cycle 100 and the low temperature part cycle 200 of the binary refrigeration cycle heat pump system to selectively heat exchange according to the set hot water temperature of the use place, and the refrigerant and the high temperature part cycle ( A high-temperature part inlet/outlet 30 and 31 connected to the high-temperature part cycle 100 on one side so that the refrigerant of 100) exchanges heat with each other, and a low-temperature part first inlet/outlet 40 and 41 connected to the low-temperature part cycle 200. A first plate heat exchanger having each formed thereon;

상기 저온부 사이클(200)의 냉매와 사용처의 온수가 상호 열교환 되도록 일측면에 저온부 사이클(200)과 연결되는 저온부 제 2 유입/배출구(50,51)가 형성되고, 타측면에 사용처와 직접 연결되는 사용처 유입/배출구(60,61)가 형성되는 제 2 판형 열교환기; 를 포함하여 구성으로 이루어지고, 상기 제 1 판형 열교환기와 제 2 판형 열교환기는 하나의 케이스 내에 구비되어 일체형으로 형성되는 구성으로 이루어 진다.The second inlet/outlet 50 and 51 of the low temperature part connected to the low temperature part cycle 200 is formed on one side so that the refrigerant of the low temperature part cycle 200 and the hot water of the use place mutually heat exchange, and the second inlet/outlet 50 and 51 of the low temperature part connected to the use place is formed on the other side. A second plate heat exchanger in which the inlet/outlet ports 60 and 61 are formed; The first plate-type heat exchanger and the second plate-type heat exchanger are provided in one case and formed integrally.

그러나, 종래의 이원 사이클에 적용되는 열교환기는 저온부 사이클의 열원을 고온부 사이클에 전달하는 역할만하기에 과열도와 과냉도의 제어가 불가능하고, 그에 따라 냉동 사이클의 효율이 떨어지는 문제점이 있다.However, since the heat exchanger applied to the conventional binary cycle only serves to transfer the heat source of the low-temperature part cycle to the high-temperature part cycle, it is impossible to control the degree of superheat and subcooling, and accordingly, there is a problem that the efficiency of the refrigeration cycle is deteriorated.

또한, 상기 캐스케이스열교환기를 단순히 열교환하는 용도로만 사용하여 다양한 용도로 사용할 수 없는 단점이 있는 것이다.In addition, there is a disadvantage that the cascase heat exchanger cannot be used for various purposes since it is used only for heat exchange.

상기와 같은 종래의 문제점들을 개선하기 위한 본 발명의 목적은, 바닥 및 공간의 냉,난방이 동시 또는 선택적으로 이루어질 수 있도록 하며, 고온측 싸이클로 저온측 싸이클을 동시 또는 선택적으로 사용토록 하고, 제상모드에서도 고온측 싸이클의 효율적인 동작이 가능토록 하며, 고온측 싸이클을 주변 온도에 상관없이 일정하게 동작시킬 수 있도록 하는 제상기능을 갖는 캐스케이드 히트펌프 시스템을 제공하는데 있다.An object of the present invention for improving the conventional problems as described above is to enable simultaneous or selective cooling and heating of floors and spaces, and to simultaneously or selectively use a low temperature cycle as a high temperature cycle, and a defrost mode In addition, it is to provide a cascade heat pump system having a defrost function that enables efficient operation of the high-temperature side cycle and enables the high-temperature side cycle to be constantly operated regardless of the ambient temperature.

본 발명은 상기 목적을 달성하기 위하여, 캐스케이드 열교환기로 연결되는 제1냉매싸이클과 제2냉매싸이클로 이루어지고, The present invention consists of a first refrigerant cycle and a second refrigerant cycle connected to a cascade heat exchanger in order to achieve the above object,

상기 제1냉매싸이클은, 제1열매체가 압축되는 고온측 압축기와, 상기 고온측 압축기의 출구에 연결되어 고온탱크에 제1열매체의 열원을 전달하는 고온측 열교환기와, 상기 고온측 열교환기에서 토출된 제1열매체를 팽창시키는 고온측 팽창밸브와, 일측은 고온측 팽창밸브에 타측은 캐스케이드 열교환기에 연결되는 저온탱크와, 상기 저온탱크와 연결되면서 고온측 압축기의 입구측에 연결되는 캐스케이드 열교환기로 이루어지고,The first refrigerant cycle includes a high-temperature compressor in which a first heat medium is compressed, a high-temperature heat exchanger connected to an outlet of the high-temperature compressor to transfer a heat source of the first heat medium to a high-temperature tank, and discharge from the high-temperature heat exchanger. It consists of a high-temperature expansion valve for expanding the first heat medium, a low-temperature tank connected to the high-temperature expansion valve on one side and a cascade heat exchanger on the other side, and a cascade heat exchanger connected to the inlet side of the high-temperature compressor while being connected to the low-temperature tank. under,

상기 제2냉매싸이클은, 제2열매체를 압축시키는 저온측 압축기와, 상기 저온측 압축기의 출구에 연결되는 캐스케이드 열교환기와, 상기 캐스케이드 열교환기를 통과한 제2열매체를 팽창시 키는 저온측 팽창밸브와, 상기 저온측 팽창밸브와 연통되어 저온측 열교환기로서 이루어지고, The second refrigerant cycle includes a low temperature compressor for compressing a second heat medium, a cascade heat exchanger connected to an outlet of the low temperature compressor, a low temperature expansion valve for expanding the second heat medium passing through the cascade heat exchanger, and , In communication with the low-temperature-side expansion valve and formed as a low-temperature-side heat exchanger

상기 고온탱크와 저온탱크는 팬을 갖는 라디에이터에 각각 연결되고, 상기 라디에이터는 고온탱크와 저온탱크에 펌프와 첵밸브를 갖는 공급관로로 각각 연결되는 제상기능을 갖는 캐스케이드 히트펌프 시스템을 제공한다.The high-temperature tank and the low-temperature tank are each connected to a radiator having a fan, and the radiator is connected to the high-temperature tank and the low-temperature tank by a supply line having a pump and a check valve, respectively.It provides a cascade heat pump system having a defrost function.

그리고, 상기 저온탱크는, 캐스케이드열교환기의 열을 저온탱크에 전달토록 제1열전달코일이 캐스케이드열교환기 후단에 연결되는 제상기능을 갖는 캐스케이드 히트펌프 시스템을 제공한다.In addition, the low temperature tank provides a cascade heat pump system having a defrost function in which a first heat transfer coil is connected to a rear end of the cascade heat exchanger so as to transfer heat from the cascade heat exchanger to the low temperature tank.

또한, 상기 저온측 열교환기는, 압축기의 출구의 열을 저온측팽창밸브 후단에 전달토록 제2열전달코일이 구비되는 제상기능을 갖는 캐스케이드 히트펌프 시스템을 제공한다.In addition, the low-temperature heat exchanger provides a cascade heat pump system having a defrost function in which a second heat transfer coil is provided to transfer heat from the outlet of the compressor to a rear end of the low-temperature expansion valve.

더하여, 상기 고온탱크는, 바닥난방을 수행하는 제3열전달코일이 연결되는 제상기능을 갖는 캐스케이드 히트펌프 시스템을 제공한다.In addition, the high-temperature tank provides a cascade heat pump system having a defrost function to which a third heat transfer coil for performing floor heating is connected.

이상과 같이 본 발명에 의하면, 바닥 및 공간의 냉,난이 동시 또는 선택적으로 이루어지며, 고온측 싸이클로 저온측 싸이클을 동시 또는 선택적으로 사용하고, 제상모드에서도 고온측 싸이클의 효율적인 동작이 가능하며, 고온측 싸이클을 주변 온도에 상관없이 일정하게 동작시키는 효과가 있는 것이다.As described above, according to the present invention, cooling and heating of the floor and space are simultaneously or selectively performed, and the low-temperature cycle is used simultaneously or selectively as the high-temperature cycle, and efficient operation of the high-temperature cycle is possible even in the defrost mode. It has the effect of constantly operating the high-temperature cycle regardless of the ambient temperature.

도1은 종래의 캐스케이드 열교환기를 도시한 회로도이다.
도2는 본 발명에 따른 캐스케이드 열교환기를 갖는 히트펌프시스템을 도시한 회로도이다.
도3은 본 발명의 다른 실시예에 따른 캐스케이드 열교환기를 갖는 히트펌프시스템을 도시한 회로도이다.1 is a circuit diagram showing a conventional cascade heat exchanger.
2 is a circuit diagram showing a heat pump system having a cascade heat exchanger according to the present invention.
3 is a circuit diagram showing a heat pump system having a cascade heat exchanger according to another embodiment of the present invention.

이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 따른 캐스케이드 열교환기를 갖는 히트펌프시스템을 도시한 회로도이고, 도3은 본 발명의 다른 실시예에 따른 캐스케이드 열교환기를 갖는 히트펌프시스템을 도시한 회로도이다.2 is a circuit diagram showing a heat pump system having a cascade heat exchanger according to the present invention, and FIG. 3 is a circuit diagram showing a heat pump system having a cascade heat exchanger according to another embodiment of the present invention.

본 발명의 히트펌프시스템(100)은, 캐스케이드 열교환기(300)로 연결되는 제1냉매싸이클(200)과 제2냉매싸이클(400)로 이루어진다.The heat pump system 100 of the present invention includes a first refrigerant cycle 200 and a second refrigerant cycle 400 connected to the cascade heat exchanger 300.

그리고, 상기 제1냉매싸이클(200)은, 제1열매체가 압축되는 고온측 압축기(210)와, 상기 고온측 압축기의 출구에 제1사방밸브(240)로 연결되어 고온탱크(220)에 제1열매체의 열원을 전달하는 고온측 열교환기(230)와, 상기 고온측 열교환기(230)에서 토출된 제1열매체를 팽창시키는 고온측 팽창밸브(250)로 이루어진다.In addition, the first refrigerant cycle 200 is connected to a high-temperature compressor 210 to which a first heat medium is compressed, and a first four-way valve 240 at an outlet of the high-temperature compressor to be supplied to the high-temperature tank 220. A high-temperature heat exchanger 230 for transmitting a heat source of the first heat medium and a high-temperature expansion valve 250 for expanding the first heat medium discharged from the high-temperature heat exchanger 230 are provided.

이때, 상기 고온측 압축기(210)의 일측에 고온측 액분기기(260)가 연결된다.At this time, a high-temperature side liquid diverter 260 is connected to one side of the high-temperature side compressor 210.

또한, 상기 고온측 팽창밸브(250)의 후단에는 일측이 고온측 팽창밸브에 타측은 캐스케이드 열교환기(300)에 연결되는 저온탱크(280)가 더 연결된다.In addition, a low temperature tank 280 connected to the high temperature expansion valve and the cascade heat exchanger 300 is further connected to the rear end of the high temperature expansion valve 250.

그리고, 상기 캐스케이드 열교환기(300)는 저온탱크와 연결되면서 고온측 압축기의 입구측에 제1사방밸브를 통하여 연결된다.Further, the cascade heat exchanger 300 is connected to the low temperature tank and connected to the inlet side of the high temperature compressor through a first four-way valve.

한편, 상기 제2냉매싸이클(400)은, 제2열매체를 압축시키는 저온측 압축기(410)와, 상기 저온측 압축기의 출구에 제2사방밸브(440)로서 캐스케이드 열교환기가 연결된다.Meanwhile, the second refrigerant cycle 400 includes a low-temperature compressor 410 for compressing a second heat medium, and a cascade heat exchanger is connected to an outlet of the low-temperature compressor as a second four-way valve 440.

그리고, 상기 캐스케이드 열교환기(300)를 통과한 제2열매체를 팽창시 키는 저온측 팽창밸브(450)가 더 구비되고, 상기 저온측 팽창밸브(450)의 후단에는 저온측 열교환기(430)가 연결된다.In addition, a low temperature expansion valve 450 for expanding the second heat medium that has passed through the cascade heat exchanger 300 is further provided, and a low temperature heat exchanger 430 is provided at a rear end of the low temperature expansion valve 450 Is connected.

이때, 상기 저온측 압축기(410)의 일측에 저온측 액분기기(460)가 연결된다.In this case, a low-temperature side liquid diverter 460 is connected to one side of the low-temperature side compressor 410.

더하여, 상기 고온탱크(220)와 저온탱크(280)는 팬(291)을 갖는 라디에이터(290)에 각각 연결된다.In addition, the high temperature tank 220 and the low temperature tank 280 are respectively connected to a radiator 290 having a fan 291.

이때, 상기 라디에이터(290)는 고온탱크와 저온탱크에 펌프(293)와 첵밸브(295)를 갖는 공급관로(297)로 각각 연결된다.At this time, the radiator 290 is connected to the high-temperature tank and the low-temperature tank by a supply pipe 297 having a pump 293 and a check valve 295, respectively.

그리고, 상기 저온탱크(280)는, 캐스케이드열교환기의 후단의 열을 저온탱크에 전달토록 제1열전달코일(610)이 캐스케이드열교환기(300) 후단에 연결토록 설치된다.In addition, the low temperature tank 280 is installed so that the first heat transfer coil 610 is connected to the rear end of the cascade heat exchanger 300 so as to transfer heat from the rear end of the cascade heat exchanger to the low temperature tank.

또한, 상기 저온측 열교환기(430)는, 압축기의 출구의 열을 저온측팽창밸브 후단에 전달토록 제2열전달코일(630)이 구비되어도 좋다.In addition, the low temperature side heat exchanger 430 may be provided with a second heat transfer coil 630 to transfer heat from the outlet of the compressor to the rear end of the low temperature side expansion valve.

더하여, 상기 고온탱크(220)는, 바닥난방을 수행하는 제3열전달코일(227)이 연결되어도 좋다.In addition, the high temperature tank 220 may be connected to a third heat transfer coil 227 that performs floor heating.

상기와 같은 구성으로 이루어진 본 발명의 동작을 설명한다.The operation of the present invention made of the above configuration will be described.

도2 및 도3에서와 같이 본 발명은, 제상모드시 제1냉매사이클(200)의 고온측 압축기(210)의 제1 열매체를 캐스케이드 열교환기(300)에 전달될 때 고온측 압축기(210)에 유입되는 열매체를 설정조건에 맞게 가열하도록 한다.As shown in FIGS. 2 and 3, the present invention provides the high temperature compressor 210 when the first heat medium of the high temperature compressor 210 of the first refrigerant cycle 200 is transferred to the cascade heat exchanger 300 in the defrost mode. Heat the heat medium flowing into the chamber according to the set conditions.

더하여, 상기 캐스케이드 열교환기(300)의 내측에는 pct소자(670)가 더 구비되어 사용상태에 따른 제어부(675)의 신호에 의해 가열 또는 냉각을 위한 열량을 선택적으로 공급토록 한다.In addition, a pct element 670 is further provided inside the cascade heat exchanger 300 to selectively supply the amount of heat for heating or cooling by a signal from the control unit 675 according to the state of use.

또한, 하절기에는 저온측 열교환기(430)를 통해 냉수를 생성시키도록 응축기의 역할을 수행한 뒤 제2 열매체를 캐스케이드 열교환기(300)에 전달하고, 동절기에는 고온측 열교환기(230)를 통해 온수를 생성시킬 때 증발기의 역할을 수행한 뒤, 제2 열매체를 저온측 열교환기(430)에 전달하고, 제상시에는 저온측 압축기(410)의 고온,고압 제2 열매체에 의해 제상되어 제2 열매체를 응축한 뒤, 캐스케이드 열교환기(300)에 전달한다.In addition, in summer, the second heat medium is transferred to the cascade heat exchanger 300 after performing the role of a condenser to generate cold water through the low-temperature heat exchanger 430, and in winter, through the high-temperature heat exchanger 230. After performing the role of an evaporator when generating hot water, the second heat medium is transferred to the low temperature side heat exchanger 430, and during defrost, the second heat medium is defrosted by the high temperature and high pressure second heat medium of the low temperature side compressor 410. After condensing the heat medium, it is transferred to the cascade heat exchanger 300.

그리고, 상기 제1냉매싸이클(200)은, 제1열매체가 압축되는 고온측 압축기(210)와, 상기 고온측 압축기의 출구에 제1사방밸브(240)로 연결되어 고온탱크(220)에 제1열매체의 열원을 전달하는 고온측 열교환기(230)와, 상기 고온측 열교환기(230)에서 토출된 제1열매체를 팽창시키는 고온측 팽창밸브(250)로 이루어져 하나의 싸이클을 형성하게 된다.In addition, the first refrigerant cycle 200 is connected to a high-temperature compressor 210 to which a first heat medium is compressed, and a first four-way valve 240 at an outlet of the high-temperature compressor to be supplied to the high-temperature tank 220. One cycle is formed by a high-temperature heat exchanger 230 for transferring a heat source of the first heat medium and a high-temperature expansion valve 250 for expanding the first heat medium discharged from the high-temperature heat exchanger 230.

또한, 상기 고온측 팽창밸브(250)의 후단에는 일측이 고온측 팽창밸브에 타측은 캐스케이드 열교환기(300)에 연결되는 저온탱크(280)가 더 연결되어 팽창밸브에서 냉각된 제1열매체가 보관토록 된다.In addition, at the rear end of the high-temperature expansion valve 250, a low-temperature tank 280 connected to one side of the high-temperature expansion valve and the other side to the cascade heat exchanger 300 is further connected to store the first heat medium cooled by the expansion valve. It is done.

그리고, 상기 캐스케이드 열교환기(300)는 저온탱크와 연결되면서 고온측 압축기의 입구측에 제1사방밸브를 통하여 연결되어 캐스케이드 열교환기를 통과한 제1열매체가 다시금 고온측 압축기로 순환토록 된다.In addition, the cascade heat exchanger 300 is connected to the low temperature tank and is connected to the inlet side of the high temperature compressor through a first four-way valve so that the first heat medium passing through the cascade heat exchanger is circulated to the high temperature compressor again.

한편, 상기 제2냉매싸이클(400)은, 제2열매체를 압축시키는 저온측 압축기(410)와, 상기 저온측 압축기의 출구에 제2사방밸브(440)로서 캐스케이드 열교환기가 연결되어 상기 제2열매체 역시 압축기와 캐스케이드 열교환기 및 저온측 팽창밸브등을 통과하면서 순환토록 된다.Meanwhile, the second refrigerant cycle 400 includes a low-temperature compressor 410 for compressing a second heat medium, and a cascade heat exchanger is connected as a second four-way valve 440 to the outlet of the low-temperature compressor, and the second heat medium It is also circulated while passing through the compressor, cascade heat exchanger, and low-temperature expansion valve.

더하여, 상기 고온탱크(220)와 저온탱크(280)는 팬(261)을 갖는 라디에이터(290)에 각각 연결되어 사용상태 즉 여름이나 겨울철 라디에이터를 통하여 실내의 공기를 냉각하거나 가열토록 한다.In addition, the high-temperature tank 220 and the low-temperature tank 280 are respectively connected to a radiator 290 having a fan 261 to cool or heat the indoor air through a radiator in use, that is, in summer or winter.

이때, 상기 라디에이터(290)는 고온탱크와 저온탱크에 펌프(293)와 첵밸브(295)를 갖는 공급관로(297)로 각각 연결되어 펌프의 동작시 한 방향으로 이동하는 공급관로에 의해 제1,2열매체에 의해 열전달이 완료되는 고온탱크 및 저온탱크의 열량을 라디에이터에 선택적으로 공급하게 된다.At this time, the radiator 290 is connected to the high-temperature tank and the low-temperature tank by a supply line 297 having a pump 293 and a check valve 295, respectively, and the first by a supply line that moves in one direction when the pump is operated. ,2 The heat transfer of the high-temperature tank and low-temperature tank are selectively supplied to the radiator.

그리고, 상기 저온탱크(280)는, 저온측 팽창밸브에 공급되는 제2열매체의 열을 외부에 전달토록 제1열전달코일(610)이 설치되어 캐스케이드열교환기 후단의 열을 저온탱크에 전달토록 하여 고온측 팽창밸브에 의해 냉각된 제1열매체를 사용조건에 따라 적절하게 조절하게 된다.In addition, the low temperature tank 280 is equipped with a first heat transfer coil 610 to transfer heat from the second heat medium supplied to the low temperature expansion valve to the outside, so that the heat from the rear end of the cascade heat exchanger is transferred to the low temperature tank. The first heat medium cooled by the high-temperature expansion valve is appropriately adjusted according to the conditions of use.

또한, 상기 저온측 열교환기(430)는, 제2열전달코일(630)이 구비되어 압축기 출구의 열을 저온측팽창밸브 후단에 전달토록 하여 저온측 팽창밸브를 통과한 제2열매체의 과냉각 방지토록 한다.In addition, the low temperature side heat exchanger 430 is provided with a second heat transfer coil 630 to transfer heat from the compressor outlet to the rear end of the low temperature side expansion valve to prevent overcooling of the second heat medium that has passed the low temperature side expansion valve. do.

더하여, 상기 고온탱크(220)는, 제3열전달코일(227)이 연결되어 공기를 통한 열전달은 물론 바닥의 냉방 또는 난방을 수행할 수 있게 되는 것이다.In addition, the high-temperature tank 220 is connected to the third heat transfer coil 227 to perform heat transfer through air as well as cooling or heating the floor.

100...히트펌프시스템 200...제1냉매싸이클
220...고온탱크 290...라디에이터
280...저온탱크 300...캐스케이드 열교환기
400...제2냉매싸이클100...heat pump system 200...1st refrigerant cycle
220...high temperature tank 290...radiator
280...cold tank 300...cascade heat exchanger
400...second refrigerant cycle

Claims (4)

캐스케이드 열교환기로 연결되는 제1냉매싸이클과 제2냉매싸이클로 이루어지고,
상기 제1냉매싸이클은, 제1열매체가 압축되는 고온측 압축기와, 상기 고온측 압축기의 출구에 연결되어 고온탱크에 제1열매체의 열원을 전달하는 고온측 열교환기와, 상기 고온측 열교환기에서 토출된 제1열매체를 팽창시키는 고온측 팽창밸브와, 일측은 고온측 팽창밸브에 타측은 캐스케이드 열교환기에 연결되는 저온탱크와, 상기 저온탱크와 연결되면서 고온측 압축기의 입구측에 연결되는 캐스케이드 열교환기로 이루어지고,
상기 제2냉매싸이클은, 제2열매체를 압축시키는 저온측 압축기와, 상기 저온측 압축기의 출구에 연결되는 캐스케이드 열교환기와, 상기 캐스케이드 열교환기를 통과한 제2열매체를 팽창시 키는 저온측 팽창밸브와, 상기 저온측 팽창밸브와 연통되어 저온측 열교환기로서 이루어지고,
상기 고온탱크와 저온탱크는 팬을 갖는 라디에이터에 각각 연결되고,
상기 라디에이터는 고온탱크와 저온탱크에 펌프와 첵밸브를 갖는 공급관로로 각각 연결되는 제상기능을 갖는 캐스케이드 히트펌프 시스템.It consists of a first refrigerant cycle and a second refrigerant cycle connected to a cascade heat exchanger,
The first refrigerant cycle includes a high-temperature compressor in which a first heat medium is compressed, a high-temperature heat exchanger connected to an outlet of the high-temperature compressor to transfer a heat source of the first heat medium to a high-temperature tank, and discharge from the high-temperature heat exchanger. It consists of a high-temperature expansion valve for expanding the first heat medium, a low-temperature tank connected to the high-temperature expansion valve on one side and a cascade heat exchanger on the other side, and a cascade heat exchanger connected to the inlet side of the high-temperature compressor while connected to the low-temperature tank. under,
The second refrigerant cycle includes a low temperature compressor for compressing a second heat medium, a cascade heat exchanger connected to an outlet of the low temperature compressor, a low temperature expansion valve for expanding the second heat medium passing through the cascade heat exchanger, and , In communication with the low-temperature-side expansion valve and formed as a low-temperature-side heat exchanger
The high temperature tank and the low temperature tank are each connected to a radiator having a fan,
The radiator is a cascade heat pump system having a defrost function that is connected to the high-temperature tank and the low-temperature tank by a supply line having a pump and a check valve, respectively. 제1항에 있어서, 상기 저온탱크는, 캐스케이드열교환기의 열을 저온탱크에 전달토록 제1열전달코일이 캐스케이드열교환기 후단에 연결되는 것을 특징으로 하는 제상기능을 갖는 캐스케이드 히트펌프 시스템.The cascade heat pump system according to claim 1, wherein in the low temperature tank, the first heat transfer coil is connected to a rear end of the cascade heat exchanger so as to transfer heat from the cascade heat exchanger to the low temperature tank. 제1항에 있어서, 상기 저온측 열교환기는, 압축기의 출구의 열을 저온측팽창밸브 후단에 전달토록 제2열전달코일이 구비되는 것을 특징으로 하는 제상기능을 갖는 캐스케이드 히트펌프 시스템.The cascade heat pump system of claim 1, wherein the low-temperature heat exchanger is provided with a second heat transfer coil to transfer heat from an outlet of the compressor to a rear end of the low-temperature expansion valve. 제1항에 있어서, 상기 고온탱크는, 바닥난방을 수행하는 제3열전달코일이 연결되는 것을 특징으로 하는 제상기능을 갖는 캐스케이드 히트펌프 시스템.The cascade heat pump system of claim 1, wherein the high-temperature tank is connected to a third heat transfer coil that performs floor heating.
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KR200270430Y1 (en) * 2001-12-19 2002-04-03 류옥란 Heat pump system
KR100737356B1 (en) * 2005-03-29 2007-07-09 아이신세이끼가부시끼가이샤 Heat pump for a water-cooled engines
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