KR20040080863A - Cooling and heating system - Google Patents

Cooling and heating system Download PDF

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Publication number
KR20040080863A
KR20040080863A KR1020030016230A KR20030016230A KR20040080863A KR 20040080863 A KR20040080863 A KR 20040080863A KR 1020030016230 A KR1020030016230 A KR 1020030016230A KR 20030016230 A KR20030016230 A KR 20030016230A KR 20040080863 A KR20040080863 A KR 20040080863A
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KR
South Korea
Prior art keywords
heat exchanger
way valve
hot water
pipe
cooling
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KR1020030016230A
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Korean (ko)
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KR100468474B1 (en
Inventor
김성구
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삼성전자주식회사
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Priority to KR10-2003-0016230A priority Critical patent/KR100468474B1/en
Publication of KR20040080863A publication Critical patent/KR20040080863A/en
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Publication of KR100468474B1 publication Critical patent/KR100468474B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/021Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0215Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being used parallel to the outdoor heat exchanger during heating operation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02731Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means using one three-way valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve

Abstract

PURPOSE: A heating and cooling system is provided to change cooling and heating operations by switching a four-way valve and to supply hot water in both the cooling and heating operations. CONSTITUTION: A heating and cooling system is composed of a compressor(10) compressing refrigerants; a four-way valve(11) connected to discharge and intake sides of the compressor through a pipe to switch the flow direction of the refrigerant; a hot water supply heat exchanger(13) and an indoor heat exchanger(14) linked to a branch pipe connected with the side of the four-way valve in parallel; an expansion valve(17) installed to the pipe extended from other sides of the hot water supply heat exchanger and the indoor heat exchanger, respectively, and joined together; an outdoor heat exchanger(18) having both ends connected to the other sides of the four-way valve and the expansion valve through the pipe; a first bypass pipe(21) branched off from the pipe between the outdoor heat exchanger and the expansion valve and connected to the pipe of a hot water supply heat exchanger inlet to supply the high-temperature and high-pressure refrigerant discharged from the compressor through the outdoor heat exchanger to the hot water heat exchanger by the four-way valve in a cooling operation; and a second bypass pipe(24) branched off from the pipe of an expansion valve outlet and linked to the indoor heat exchanger to flow the refrigerant passing through the expansion valve toward the four-way valve through the indoor heat exchanger in the cooling operation.

Description

냉난방시스템{COOLING AND HEATING SYSTEM}Cooling and Heating System {COOLING AND HEATING SYSTEM}
본 발명은 냉난방시스템에 관한 것으로, 더욱 상세하게는 냉방운전과 난방운전이 가능하고, 냉방과 난방운전시 모두 뜨거운 물의 공급이 가능하며 효율이 높은 냉난방시스템에 관한 것이다.The present invention relates to a cooling and heating system, and more particularly, to a cooling and heating operation, and to a cooling and heating system capable of supplying hot water in both cooling and heating operation, and high efficiency.
일반적으로 온수의 제조가 가능한 히트펌프식 급탕시스템은 압축기, 응축기의 기능을 하는 온수열교환기, 팽창장치, 증발기의 기능을 하는 공기열교환기를 갖춘 냉매계통회로를 구비하고, 온수열교환기와 연계되는 수(水)계통회로를 구비한다. 수계통회로는 고온인 온수열교환기를 통해 제조되는 온수를 저장하는 온수탱크, 온수탱크로 물을 공급하는 급수배관, 사용자가 온수를 이용할 수 있도록 온수탱크와 연결되는 급탕배관을 포함한다.In general, a heat pump type hot water supply system capable of producing hot water includes a refrigerant system circuit having a compressor, a hot water heat exchanger functioning as a condenser, an expansion device, and an air heat exchanger functioning as an evaporator, and connected to the hot water heat exchanger. A water circuit is provided. The water system circuit includes a hot water tank for storing hot water manufactured through a hot water heat exchanger having a high temperature, a water supply pipe for supplying water to the hot water tank, and a hot water supply pipe connected to the hot water tank so that the user can use hot water.
그런데 이러한 종래의 히트펌프식 급탕시스템은 온수의 제조와 실내의 냉방을 위한 시스템이기 때문에 실내공간의 난방을 위해서는 별도의 공조시스템을 구비해야 하는 결점이 있었다. 즉 종래의 시스템은 증발기의 기능을 하는 공기열교환기를 통해 실내공간의 냉방을 수행할 수 있으나 실내공간의 난방을 수행할 수 없었기 때문에 시스템의 이용효율이 떨어지는 문제가 있었다.However, since the conventional heat pump type hot water supply system is a system for manufacturing hot water and cooling indoors, there is a drawback that a separate air conditioning system must be provided for heating an indoor space. That is, the conventional system can perform the cooling of the indoor space through the air heat exchanger functioning as an evaporator, but there is a problem that the utilization efficiency of the system is lowered because the heating of the indoor space cannot be performed.
본 발명은 이와 같은 종래기술의 문제점들을 감안하여 안출한 것으로, 본 발명의 목적은 냉방운전과 난방운전의 전환이 가능하고, 냉방과 난방운전시 모두 급탕의 제조가 가능할 뿐 아니라, 시스템의 열교환효율 및 이용효율이 현저히 향상될 수 있도록 하는 냉난방시스템을 제공하는 것이다.The present invention has been made in view of the problems of the prior art, the object of the present invention is to switch between the cooling operation and heating operation, the production of hot water supply during both cooling and heating operation, as well as the heat exchange efficiency of the system And it is to provide a cooling and heating system that can be significantly improved utilization efficiency.
도 1은 본 발명에 따른 냉난방시스템 제1실시 예의 사이클 구성도이다.1 is a cycle configuration diagram of a first embodiment of a heating and cooling system according to the present invention.
도 2는 본 발명에 따른 냉난방시스템 제2실시 예의 사이클 구성도이다.2 is a cycle configuration diagram of a second embodiment of a heating and cooling system according to the present invention.
도 3은 본 발명에 따른 냉난방시스템 제3실시 예의 사이클 구성도이다.3 is a cycle configuration diagram of a third embodiment of a heating and cooling system according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10: 압축기, 11: 사방밸브,10: compressor, 11: four-way valve,
13: 급탕열교환기, 14: 실내열교환기,13: hot water heat exchanger, 14: indoor heat exchanger,
17,31,32: 팽창밸브, 18: 실외열교환기,17, 31, 32: expansion valve, 18: outdoor heat exchanger,
21: 제1우회배관, 22: 제1삼방밸브,21: the first bypass pipe, 22: the first three-way valve,
23: 제2삼방밸브, 24: 제2우회배관,23: second three-way valve, 24: second bypass piping,
25: 제3삼방밸브, 26: 보조열교환기.25: third three-way valve, 26: auxiliary heat exchanger.
이러한 목적을 달성하기 위한 본 발명에 따른 냉난방시스템은, 냉매를 압축하는 압축기, 상기 압축기의 토출 측과 흡입 측에 배관을 통해 각각 연결되며 냉매의 흐름방향을 전환시키는 사방밸브, 상기 사방밸브의 일측과 연계되는 분기배관에각각의 일측이 병렬로 연결되는 급탕열교환기와 실내열교환기, 상기 급탕열교환기와 상기 실내열교환기의 타측으로부터 각각 연장되어 하나로 합류되는 배관에 설치되는 팽창밸브, 양측이 상기 팽창밸브와 상기 사방밸브의 타측에 각각 배관을 통해 연결되는 실외열교환기를 구비하고, 냉방운전시 상기 압축기로부터 토출되는 고온고압냉매가 상기 사방밸브를 통해 상기 실외열교환기를 거쳐 상기 급탕열교환기로 공급될 수 있도록 상기 실외열교환기와 상기 팽창밸브사이의 배관으로부터 분기되어 상기 급탕열교환기 입구 쪽 배관에 연결되는 제1우회배관, 냉방운전시 상기 팽창밸브를 통과한 냉매가 상기 실내열교환기를 거쳐 상기 사방밸브 쪽으로 흐를 수 있도록 상기 팽창밸브의 출구 쪽 배관으로부터 분기되어 상기 실내열교환기 쪽으로 연결되는 제2우회배관을 포함하는 것이다.The air conditioning system according to the present invention for achieving the above object is a compressor for compressing a refrigerant, a four-way valve connected to each of the discharge side and the suction side of the compressor via a pipe to switch the flow direction of the refrigerant, one side of the four-way valve A hot water supply heat exchanger and an indoor heat exchanger, one side of which is connected in parallel to a branch pipe connected to each other, an expansion valve installed in a pipe extending from the other side of the hot water heat exchanger and the indoor heat exchanger and joined together, and both sides of the expansion valve. And an outdoor heat exchanger connected to the other side of the four-way valve through pipes, and the high temperature and high pressure refrigerant discharged from the compressor during the cooling operation may be supplied to the hot water supply heat exchanger through the four-way valve through the outdoor heat exchanger. The hot water is branched from the pipe between the outdoor heat exchanger and the expansion valve The first bypass pipe connected to the heat exchanger inlet pipe, branched from the outlet pipe of the expansion valve so that the refrigerant passing through the expansion valve flows to the four-way valve through the indoor heat exchanger during the cooling operation, the indoor heat exchanger It includes a second bypass pipe connected to the side.
또한 본 발명은 냉방운전시와 난방운전시의 유로변경을 위해 상기 제1우회배관의 상기 실외열교환기 쪽 배관분기부에 마련되는 제1삼방밸브, 상기 제1우회배관의 상기 급탕열교환기 쪽 배관연결부에 마련되는 제2삼방밸브, 상기 제2우회배관의 상기 실내열교환기 쪽 배관연결부에 마련된 제3삼방밸브를 더 포함하는 것이다.In addition, the present invention is the first three-way valve provided in the pipe branch portion of the outdoor heat exchanger side of the first bypass pipe in the cooling operation and the heating operation during the heating operation, the hot water heat exchanger side pipe of the first bypass pipe The second three-way valve provided in the connection portion, and the third three-way valve provided in the pipe connection portion of the indoor heat exchanger side of the second bypass pipe.
또한 본 발명은 난방운전시 상기 압축기로부터 공급되는 고온고압의 냉매가 상기 제2삼방밸브와 상기 제3삼방밸브의 선택적인 개폐동작에 의해 상기 실내열교환기와 상기 급탕열교환기 중 어느 한쪽으로 공급되거나 양쪽으로 동시에 공급되도록 제어되는 것을 특징으로 한다.In another aspect, the present invention is the high-temperature, high-pressure refrigerant supplied from the compressor during the heating operation is supplied to either the indoor heat exchanger and the hot water supply heat exchanger by the selective opening and closing operation of the second three-way valve and the third three-way valve, or both It is characterized in that controlled to be supplied at the same time.
또한 본 발명은 상기 사방밸브를 거쳐 상기 압축기의 흡입 측으로 복귀하는 저온저압의 냉매가 상기 팽창밸브 상류 측 고온고압의 냉매와 열교환을 하도록 하는 보조열교환기를 더 포함하는 것이다.The present invention further includes an auxiliary heat exchanger for allowing the low temperature and low pressure refrigerant to return to the suction side of the compressor via the four-way valve to exchange heat with the high temperature and high pressure refrigerant upstream of the expansion valve.
또한 본 발명에 따른 냉난방시스템은 냉매를 압축하는 압축기, 상기 압축기의 토출 측과 흡입 측에 배관을 통해 각각 연결되며 냉매의 흐름방향을 전환시키는 사방밸브, 상기 사방밸브의 일측과 연계되는 분기배관에 각각 일측이 병렬로 연결되는 급탕열교환기와 실내열교환기, 상기 급탕열교환기와 상기 실내열교환기 타측의 배관에 각각 설치되는 제1팽창밸브와 제2팽창밸브, 상기 두 팽창밸브로부터 연장되어 하나로 합류되는 배관에 그 일측이 연결되고 타측이 상기 사방밸브에 연결되는 실외열교환기를 구비하고, 냉방운전시 상기 압축기로부터 토출되는 고온고압냉매가 상기 사방밸브를 통해 상기 실외열교환기를 거쳐 상기 급탕열교환기로 공급될 수 있도록 상기 실외열교환기와 상기 두 팽창밸브사이를 연결하는 배관으로부터 분기되어 상기 급탕열교환기 입구 쪽 배관에 연결되는 우회배관을 포함하는 것이다.In addition, the air-conditioning system according to the present invention is a compressor for compressing a refrigerant, a four-way valve connected to each of the discharge side and the suction side of the compressor via a pipe to switch the flow direction of the refrigerant, branch pipe connected to one side of the four-way valve A hot water heat exchanger and an indoor heat exchanger having one side connected in parallel to each other, and a first expansion valve and a second expansion valve respectively installed in pipes on the other side of the hot water heat exchanger and the other side of the indoor heat exchanger, and pipes extending from the two expansion valves and joined together. It is provided with an outdoor heat exchanger connected to one side thereof and the other side connected to the four-way valve, so that the high temperature and high pressure refrigerant discharged from the compressor during the cooling operation can be supplied to the hot water supply heat exchanger through the four-way valve through the outdoor heat exchanger. Branched from a pipe connecting the outdoor heat exchanger and the two expansion valves It includes a bypass pipe connected to the inlet pipe of the hot water heat exchanger.
또한 본 발명은 난방운전시 상기 압축기로부터 상기 급탕열교환기와 상기 실내열교환기로 공급되는 냉매의 양이 상기 제1팽창밸브와 상기 제2팽창밸브의 개도조절을 통해 조절되는 것을 특징으로 한다.In another aspect, the present invention is characterized in that the amount of the refrigerant supplied to the hot water supply heat exchanger and the indoor heat exchanger from the compressor during the heating operation is controlled by adjusting the opening degree of the first expansion valve and the second expansion valve.
또한 본 발명은 냉방운전시 상기 우회배관과 상기 급탕열교환기를 거친 냉매가 상기 제1팽창밸브와 상기 제2팽창밸브를 거쳐 상기 실내열교환기로 흐르는 것을 특징으로 한다.In addition, the present invention is characterized in that during the cooling operation the refrigerant passing through the bypass pipe and the hot water heat exchanger flows to the indoor heat exchanger through the first expansion valve and the second expansion valve.
이하에서는 본 발명에 따른 바람직한 실시 예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail.
도 1은 본 발명에 따른 냉난방시스템의 제1실시 예를 나타낸 것이다. 이 냉난방시스템은 냉매를 고온 고압으로 압축하는 압축기(10)를 구비한다. 또 냉난방시스템은 압축기(10)의 토출 측에 설치되는 것으로 냉매의 흐름방향을 선택적으로 변환시키는 사방밸브(11)와, 사방밸브(11)와 연계되는 배관(12)으로부터 두 갈래로 분기되는 배관에 각각 병렬로 연결되는 급탕열교환기(13)와 실내열교환기(14)를 구비한다. 급탕열교환기(13)는 순환하는 고온의 냉매와 열교환을 통해 뜨거운 물을 만들 수 있도록 외부의 물이 공급되는 급수구(15)와 뜨거운 물이 배출되는 배출구(16)를 구비한다.1 shows a first embodiment of a cooling and heating system according to the present invention. This air conditioning system includes a compressor (10) for compressing a refrigerant to high temperature and high pressure. In addition, the air-conditioning and heating system is installed on the discharge side of the compressor 10 and diverges from the four-way valve 11 for selectively converting the flow direction of the refrigerant and the pipe 12 connected to the four-way valve 11. Hot water heat exchanger 13 and the indoor heat exchanger 14 are connected to each other in parallel. The hot water supply heat exchanger 13 includes a water supply port 15 through which external water is supplied and a discharge port 16 through which hot water is discharged to make hot water through heat exchange with a high temperature refrigerant circulating.
또 냉난방시스템은 냉매의 감압팽창을 위한 팽창밸브(17)와, 순환하는 냉매가 외기와 열교환되도록 하는 실외열교환기(18)를 구비한다. 팽창밸브(17)는 급탕열교환기(13)와 실내열교환기(14)로부터 연장되어 하나로 합류되는 배관(19)의 중도에 설치되고, 실외열교환기(18)는 그 양측이 각각 팽창밸브(17)와 사방밸브(11)에 배관을 통해 연결된다. 따라서 압축기(10)로부터 토출되는 고온고압의 냉매는 사방밸브(11)의 전환동작에 따라 실내열교환기(14)와 급탕열교환기(13) 쪽으로 흐르거나 실외열교환기(18) 쪽으로 흐를 수 있게 되는데, 냉매가 실외열교환기(18) 쪽으로 흐르면 냉방운전이 되고 그 반대로 흐르면 난방운전이 된다.In addition, the cooling and heating system includes an expansion valve 17 for decompression expansion of the refrigerant, and an outdoor heat exchanger 18 for allowing the circulating refrigerant to exchange heat with the outside air. The expansion valve 17 is installed in the middle of the pipe 19 extending from the hot water supply heat exchanger 13 and the indoor heat exchanger 14 and joined together, and the outdoor heat exchanger 18 has both sides of the expansion valve 17. ) And the four-way valve (11) is connected via a pipe. Therefore, the high temperature and high pressure refrigerant discharged from the compressor 10 may flow toward the indoor heat exchanger 14 and the hot water heat exchanger 13 or toward the outdoor heat exchanger 18 according to the switching operation of the four-way valve 11. When the refrigerant flows toward the outdoor heat exchanger 18, the cooling operation is performed, and when the refrigerant flows in the opposite direction, the heating operation is performed.
또한 본 발명은 냉방운전시 압축기(10)로부터 토출되는 고온 고압의 냉매가 실외열교환기(18)를 거쳐 급탕열교환기(13) 쪽으로 공급될 수 있도록 실외열교환기(18)와 팽창밸브(17) 사이의 배관(20)으로부터 분기되어 급탕열교환기(13)의 입구 쪽 배관에 연결되는 제1우회배관(21)을 구비한다. 또 제1우회배관(21)의 실외열교환기(18) 쪽 배관분기부에는 제1삼방밸브(22)가 설치되고, 제1우회배관(21)의 급탕열교환기(13) 쪽 배관연결부에는 제2삼방밸브(23)가 설치된다. 제1삼방밸브(22)와 제2삼방밸브(23)는 냉방운전시와 난방운전시 유로변경을 통해 냉매의 순환방향이 바뀌도록 한다.In addition, the present invention is the outdoor heat exchanger 18 and the expansion valve 17 so that the high temperature and high pressure refrigerant discharged from the compressor 10 during the cooling operation can be supplied toward the hot water heat exchanger 13 via the outdoor heat exchanger 18. A first bypass pipe 21 branched from the pipe 20 between the pipes and connected to the inlet pipe of the hot water heat exchanger 13 is provided. In addition, a first three-way valve 22 is installed at a pipe branch of the first bypass pipe 21 to the outdoor heat exchanger 18, and a pipe connection to the hot water heat exchanger 13 of the first bypass pipe 21 is provided. Two-way valve 23 is installed. The first three-way valve 22 and the second three-way valve 23 to change the circulation direction of the refrigerant by changing the flow path during the cooling operation and heating operation.
또한 본 발명은 냉방운전시 팽창밸브(17)를 통과한 냉매가 실내열교환기(14)를 거쳐 사방밸브(11) 쪽으로 흐를 수 있도록 팽창밸브(17)의 출구 쪽 배관(20)으로부터 분기되어 실내열교환기(14) 쪽으로 연결되는 제2우회배관(24)을 구비하며, 제2우회배관(24)이 연결되는 실내열교환기(14) 쪽 배관연결부에는 제3삼방밸브(25)가 설치된다. 제3삼방밸브(25)는 냉방운전시와 난방운전시의 유로변경을 통해 냉매순환방향이 바뀌도록 한다. 한편 이러한 급탕기능을 갖춘 냉난방시스템에 있어서 냉매는 이산화탄소(CO2)가 이용된다.In addition, the present invention is branched from the outlet pipe 20 of the expansion valve 17 so that the refrigerant passing through the expansion valve 17 flows toward the four-way valve 11 through the indoor heat exchanger 14 during the cooling operation. The second bypass pipe 24 connected to the heat exchanger 14 is provided, and the third three-way valve 25 is installed at the pipe connection part of the indoor heat exchanger 14 to which the second bypass pipe 24 is connected. The third three-way valve 25 changes the refrigerant circulation direction by changing the flow path during the cooling operation and the heating operation. Meanwhile, carbon dioxide (CO2) is used as a refrigerant in a cooling and heating system having a hot water supply function.
다음은 제1실시 예에 따른 냉난방시스템의 동작을 설명한다. 도 1에서 실선으로 된 화살표는 난방운전시의 냉매흐름을 보인 것이고, 파선으로 된 화살표는 냉방운전시의 냉매흐름을 보인 것이다.The following describes the operation of the air conditioning system according to the first embodiment. The solid arrows in FIG. 1 show the refrigerant flow during the heating operation, and the broken arrows show the refrigerant flow during the cooling operation.
난방운전시에는 사방밸브(11)의 동작에 의해 압축기(10)로부터 토출되는 고온고압의 냉매가 실내열교환기(14)와 급탕열교환기(13) 쪽으로 흐르도록 유로가 전환된다. 또 제1삼방밸브(22)는 팽창밸브(17)를 거친 냉매가 실외열교환기(18) 쪽으로 흐르도록 유로가 전환되고, 제2삼방밸브(23)는 압축기(10)로부터 공급되는 냉매가 급탕열교환기(13) 쪽으로 흐르도록 유로가 전환되며, 제3삼방밸브(25)는 실내열교환기(14)를 거친 냉매가 팽창밸브(17) 쪽으로 흐르도록 유로가 전환된다.During the heating operation, the flow path is switched so that the high temperature and high pressure refrigerant discharged from the compressor 10 flows toward the indoor heat exchanger 14 and the hot water supply heat exchanger 13 by the operation of the four-way valve 11. In addition, the flow path is switched so that the refrigerant passing through the expansion valve 17 flows toward the outdoor heat exchanger 18 and the first three-way valve 22 supplies the refrigerant supplied from the compressor 10 to the second three-way valve 23. The flow path is switched so as to flow toward the heat exchanger 13, and the flow path is switched so that the refrigerant passing through the indoor heat exchanger 14 flows toward the expansion valve 17 in the third three-way valve 25.
이 상태에서 압축기(10)가 가동되면 압축기(10)에서 토출되는 고온 고압의 냉매는 사방밸브(11)를 거친 후 병렬로 배열된 급탕열교환기(13)와 실내열교환기(14)에 공급된다. 따라서 실내열교환기(14)를 통해 실내공간의 난방을 수행함과 동시에 급탕열교환기(13)를 통해 온수를 제조할 수 있게 된다. 이때 급탕열교환기(13)는 급수구(15)를 통해 외부에서 공급되는 물이 고온의 냉매에 의해 가열되어 온수가 된 후 배출구(16)로 배출된다. 또한 이때는 제2삼방밸브(23)와 제3삼방밸브(25)의 선택적인 유로전환동작을 통해 압축기(10)로부터 공급되는 고온 고압의 냉매가 실내열교환기(14)와 급탕열교환기(13) 중 어느 한 쪽으로 공급되도록 하거나 양쪽으로 동시에 공급되도록 함으로써 사용자가 난방기능과 급탕기능 중 어느 하나를 선택하거나 두 기능을 동시에 선택하여 사용할 수 있게 된다. 급탕기능만을 사용할 때는 제3삼방밸브(25)의 유로전환을 통해 실내열교환기(14) 출구가 폐쇄하도록 하면 된다.When the compressor 10 operates in this state, the high temperature and high pressure refrigerant discharged from the compressor 10 passes through the four-way valve 11 and is supplied to the hot water supply heat exchanger 13 and the indoor heat exchanger 14 arranged in parallel. . Therefore, while heating the indoor space through the indoor heat exchanger 14 it is possible to produce hot water through the hot water supply heat exchanger (13). At this time, the hot water supply heat exchanger 13 is discharged to the outlet 16 after the water supplied from the outside through the water inlet 15 is heated by a high temperature refrigerant to become hot water. In this case, the high temperature and high pressure refrigerant supplied from the compressor 10 may be supplied to the indoor heat exchanger 14 and the hot water supply heat exchanger 13 through selective flow path switching operations of the second three-way valve 23 and the third three-way valve 25. By being supplied to either side or simultaneously to both sides, the user can select one of the heating function and the hot water supply function or select both functions simultaneously. When only the hot water supply function is used, the outlet of the indoor heat exchanger 14 may be closed by switching the flow path of the third three-way valve 25.
급탕열교환기(13)와 실내열교환기(14)를 거치면서 열교환된 냉매는 팽창밸브(17)를 통과하면서 저온 저압의 냉매가 된다. 그리고 이 냉매는 실외열교환기(18)와 사방밸브(11)를 차례로 거쳐 압축기(10)의 흡입 측으로 흐른다. 이때 실외열교환기(18)를 통과하는 냉매는 상대적으로 온도가 높은 외기와 열교환을 하며 외기로부터 열을 흡수하면서 기체상태로 된다.The refrigerant heat-exchanged through the hot water supply heat exchanger (13) and the indoor heat exchanger (14) passes through the expansion valve (17) to become a low temperature low pressure refrigerant. The refrigerant then flows through the outdoor heat exchanger 18 and the four-way valve 11 to the suction side of the compressor 10. At this time, the refrigerant passing through the outdoor heat exchanger 18 exchanges heat with outside air having a relatively high temperature, and becomes a gas state while absorbing heat from the outside air.
한편 냉방운전시에는 상술한 경우와 반대로 사방밸브(11)의 동작에 의해 압축기(10)로부터 토출되는 고온고압의 냉매가 실외열교환기(18) 쪽으로 흐르도록 유로가 전환된다. 또 제1삼방밸브(22)와 제2삼방밸브(23)는 실외열교환기(18)를 거친냉매가 제1우회배관(21)을 통해 급탕열교환기(13) 쪽으로 흐를 수 있도록 각각 유로가 전환되고, 제3삼방밸브(25)는 팽창밸브(17)를 거친 냉매가 제2우회배관(24)을 통해 실내열교환기(14) 쪽으로 흐를 수 있도록 유로가 전환된다.On the other hand, in the cooling operation, the flow path is switched so that the high temperature, high pressure refrigerant discharged from the compressor 10 flows toward the outdoor heat exchanger 18 by the operation of the four-way valve 11 as in the case described above. In addition, the first three-way valve 22 and the second three-way valve 23, respectively, the flow path is switched so that the refrigerant passing through the outdoor heat exchanger 18 flows toward the hot water supply heat exchanger 13 through the first bypass pipe 21. And, the third three-way valve 25 is the flow path is switched so that the refrigerant passing through the expansion valve 17 flows toward the indoor heat exchanger 14 through the second bypass pipe (24).
이 상태에서 압축기(10)가 동작하면 압축기(10)에서 토출되는 고온 고압의 냉매는 사방밸브(10)를 거친 후 실외열교환기(18)로 공급되어 외기와 열교환을 하고, 계속해서 제1우회배관(21)을 통해 급탕열교환기(13) 쪽으로 공급되어 뜨거운 온수를 제조할 수 있도록 한다. 급탕열교환기(13)를 거친 냉매는 팽창밸브(17)를 거치면서 저온 저압의 냉매가 되고, 이 냉매는 제2우회유로(24)를 통해 실내열교환기(14)로 공급되어 실내공간의 냉방을 수행한다. 그리고 실내열교환기(14)를 거친 냉매는 사방밸브(11)를 거쳐 압축기(10)의 흡입 측으로 흐른다. 이처럼 본 발명은 고온고압의 냉매가 실외열교환기(18) 뿐 아니라 급탕열교환기(13)를 거치면서 냉각되기 때문에 종래의 냉난방시스템보다 효율이 현저히 향상될 뿐 아니라, 냉방운전과 난방운전 모두에서 뜨거운 온수를 얻을 수 있게 된다.When the compressor 10 operates in this state, the high temperature and high pressure refrigerant discharged from the compressor 10 passes through the four-way valve 10, and then is supplied to the outdoor heat exchanger 18 to exchange heat with the outside air. The hot water is supplied to the hot water heat exchanger 13 through the pipe 21 to manufacture hot water. The refrigerant passing through the hot water heat exchanger 13 becomes a low temperature low pressure refrigerant through the expansion valve 17, and the refrigerant is supplied to the indoor heat exchanger 14 through the second bypass passage 24 to cool the indoor space. Do this. The refrigerant passing through the indoor heat exchanger 14 flows to the suction side of the compressor 10 via the four-way valve 11. As described above, the present invention not only improves the efficiency of the high temperature and high pressure refrigerant through the hot water heat exchanger 13 as well as the outdoor heat exchanger 18 but also significantly improves the efficiency of the conventional heating and cooling system. You will get hot water.
도 2는 본 발명에 따른 냉난방시스템의 제2실시 예를 나타낸 것이다. 이는 상술한 제1실시 예의 구성에 더하여 사방밸브(11)를 거쳐 압축기(10)의 흡입 측으로 복귀하는 저온 저압의 냉매가 팽창밸브(17) 상류 측의 고온 고압의 냉매와 열교환을 하도록 함으로써 시스템의 효율이 향상될 수 있도록 한 것이다. 이를 위해 팽창밸브(17) 상류 측 배관(19)에는 보조열교환기(26)가 설치되고, 사방밸브(11)로부터 압축기(10)의 흡입 측으로 흐르는 냉매가 보조열교환기(26)를 경유하도록 하는배관(27)이 마련된다.Figure 2 shows a second embodiment of the cooling and heating system according to the present invention. In addition to the configuration of the first embodiment described above, the low temperature low pressure refrigerant returning to the suction side of the compressor 10 via the four-way valve 11 causes heat exchange with the high temperature and high pressure refrigerant upstream of the expansion valve 17. It is to improve the efficiency. To this end, an auxiliary heat exchanger 26 is installed in the upstream pipe 19 of the expansion valve 17 so that refrigerant flowing from the four-way valve 11 to the suction side of the compressor 10 passes through the auxiliary heat exchanger 26. Piping 27 is provided.
제2실시 예에 따른 냉난방시스템의 동작은 압축기(10)의 흡입 측으로 흐르는 냉매가 보조열교환기(26)를 거쳐 순환하는 것을 제외하고는 상술한 제1실시 예의 동작과 동일하므로 설명을 생략한다.Since the operation of the cooling and heating system according to the second embodiment is the same as the operation of the first embodiment described above except that the refrigerant flowing to the suction side of the compressor 10 is circulated through the auxiliary heat exchanger 26, the description thereof will be omitted.
도 3은 본 발명에 따른 냉난방시스템의 제3실시 예를 나타낸 것이다. 이는 상술한 제1실시 예(도 1)의 냉난방시스템에 존재하는 제2우회배관(24)과 제3삼방밸브(25)가 없는 대신에, 난방운전에 따른 냉매의 순환조건에서 급탕열교환기(13)와 실내열교환기(14)를 거친 냉매가 각각의 출구에 인접하도록 마련된 제1팽창밸브(31)와 제2팽창밸브(32)를 통해 감압 팽창될 수 있도록 한 것이다. 또 두 팽창밸브(31,32)를 통과한 냉매는 하나의 배관(19)으로 합류가 된 후 실외열교환기(18) 쪽으로 공급되는 구성이다.Figure 3 shows a third embodiment of a cooling and heating system according to the present invention. This is because the second bypass pipe 24 and the third three-way valve 25 existing in the air-conditioning system of the first embodiment (FIG. 1) are not provided, but the hot water heat exchanger under the circulation conditions of the refrigerant according to the heating operation ( 13) and the refrigerant passing through the indoor heat exchanger (14) is to be expanded under reduced pressure through the first expansion valve 31 and the second expansion valve 32 provided to be adjacent to each outlet. In addition, the refrigerant passing through the two expansion valves (31, 32) is configured to be supplied to the outdoor heat exchanger (18) after joining the one pipe (19).
이러한 제3실시 예에 따른 냉난방시스템의 동작은 다음과 같다. 도 3에 도시한 바와 같이, 난방운전시에는 사방밸브(11)의 동작에 의해 압축기(10)로부터 토출되는 고온고압의 냉매가 실내열교환기(14)와 급탕열교환기(13) 쪽으로 흐르도록 유로가 전환된다. 또 제1삼방밸브(22)는 팽창밸브(17)를 거친 냉매가 실외열교환기(18) 쪽으로 흐를 수 있도록 유로가 전환되고, 제2삼방밸브(23)는 압축기(10)로부터 공급되는 냉매가 급탕열교환기(13) 쪽으로 흐르도록 유로가 전환된다.Operation of the air conditioning system according to the third embodiment is as follows. As shown in FIG. 3, during the heating operation, a flow path such that the high-temperature, high-pressure refrigerant discharged from the compressor 10 by the four-way valve 11 flows toward the indoor heat exchanger 14 and the hot water supply heat exchanger 13. Is switched. In addition, the first three-way valve 22 is a flow path is switched so that the refrigerant passing through the expansion valve 17 flows toward the outdoor heat exchanger 18, the second three-way valve 23 is a refrigerant supplied from the compressor (10) The flow path is switched so as to flow toward the hot water heat exchanger 13.
이 상태에서 압축기(10)가 가동되면 압축기(10)에서 토출되는 고온 고압의냉매는 사방밸브(11)를 거친 후 병렬로 배열된 급탕열교환기(13)와 실내열교환기(14)에 공급된다. 따라서 실내열교환기(14)를 통해 실내공간의 난방을 수행함과 동시에 급탕열교환기(13)를 통해 온수를 제조할 수 있게 된다. 그리고 급탕열교환기(13)와 실내열교환기(14)를 거치면서 열교환된 냉매는 각각 제1팽창밸브(31)와 제2팽창밸브(32)를 통과하면서 감압 팽창되어 저온 저압의 냉매가 된다. 또한 이때는 제1팽창밸브(31)와 제2팽창밸브(32)의 개도 조절을 통해 급탕열교환기(13)와 실내열교환기(14)를 통과하는 냉매의 양을 조절함으로써 급탕열교환기(13)의 능력과 실내열교환기(14)의 능력을 조절할 수 있다. 또한 제1팽창밸브(31)와 제2팽창밸브(32) 중 어느 하나를 완전히 닫음으로써 급탕기능과 난방기능 중 어느 하나의 기능만을 선택할 수도 있게 된다.When the compressor 10 operates in this state, the high temperature and high pressure refrigerant discharged from the compressor 10 passes through the four-way valve 11 and is supplied to the hot water supply heat exchanger 13 and the indoor heat exchanger 14 arranged in parallel. . Therefore, while heating the indoor space through the indoor heat exchanger 14 it is possible to produce hot water through the hot water supply heat exchanger (13). The refrigerant heat-exchanged through the hot water supply heat exchanger (13) and the indoor heat exchanger (14) is expanded under reduced pressure while passing through the first expansion valve (31) and the second expansion valve (32), respectively, to become a low temperature low pressure refrigerant. In this case, the hot water supply heat exchanger 13 is controlled by adjusting the amount of refrigerant passing through the hot water supply heat exchanger 13 and the indoor heat exchanger 14 by adjusting the opening degree of the first expansion valve 31 and the second expansion valve 32. The ability of the room heat exchanger (14) can be adjusted. In addition, by completely closing any one of the first expansion valve 31 and the second expansion valve 32, only one of the hot water supply function and the heating function can be selected.
그리고 두 팽창밸브(31,32)를 통과한 저온 저압의 냉매는 실외열교환기(18)와 사방밸브(11)를 차례로 거쳐 압축기의 흡입 측으로 흐른다. 이때 실외열교환기(18)를 통과하는 냉매는 상대적으로 온도가 높은 외기와 열교환을 하며 외기로부터 열을 흡수하면서 기체상태로 된다.The low temperature and low pressure refrigerant passing through the two expansion valves 31 and 32 flows through the outdoor heat exchanger 18 and the four-way valve 11 in order to the suction side of the compressor. At this time, the refrigerant passing through the outdoor heat exchanger 18 exchanges heat with outside air having a relatively high temperature, and becomes a gas state while absorbing heat from the outside air.
제3실시 예의 냉방운전시에는 상술한 경우와 반대로 사방밸브(11)의 동작에 의해 압축기(10)로부터 토출되는 고온고압의 냉매가 실외열교환기(18) 쪽으로 흐르도록 유로가 전환된다. 또 제1삼방밸브(22)와 제2삼방밸브(23)는 실외열교환기(18)를 거친 냉매가 제1우회배관(21)을 통해 급탕열교환기(13) 쪽으로 흐를 수 있도록 각각 유로가 전환된다.In the cooling operation of the third embodiment, the flow path is switched so that the high temperature and high pressure refrigerant discharged from the compressor 10 flows toward the outdoor heat exchanger 18 by the operation of the four-way valve 11 as opposed to the case described above. In addition, the first three-way valve 22 and the second three-way valve 23, respectively, the flow path is switched so that the refrigerant passing through the outdoor heat exchanger 18 flows toward the hot water supply heat exchanger 13 through the first bypass pipe 21. do.
이 상태에서 압축기(10)가 동작하면 압축기(10)에서 토출되는 고온 고압의냉매는 사방밸브(11)를 거친 후 실외열교환기(18)로 공급되어 외기와 열교환을 하고, 계속해서 제1우회배관(21)을 통해 급탕열교환기(13) 쪽으로 공급되어 뜨거운 온수를 제조할 수 있도록 한다. 급탕열교환기(13)를 거친 냉매는 제1팽창밸브(31)와 제2팽창밸브(32)를 차례로 거치면서 저온 저압의 냉매가 되고, 이 냉매는 실내열교환기(14)로 공급되어 실내공간의 냉방을 수행한다. 그리고 실내열교환기(14)를 거친 냉매는 사방밸브(11)를 거쳐 압축기(10)의 흡입 측으로 흐른다.When the compressor 10 operates in this state, the high temperature and high pressure refrigerant discharged from the compressor 10 passes through the four-way valve 11, and then is supplied to the outdoor heat exchanger 18 to exchange heat with the outside air. The hot water is supplied to the hot water heat exchanger 13 through the pipe 21 to manufacture hot water. The refrigerant passing through the hot water heat exchanger (13) passes through the first expansion valve (31) and the second expansion valve (32) to form a low temperature and low pressure refrigerant, and the refrigerant is supplied to the indoor heat exchanger (14) to provide an indoor space. Carry out cooling. The refrigerant passing through the indoor heat exchanger 14 flows to the suction side of the compressor 10 via the four-way valve 11.
이상에서 상세히 설명한 바와 같이, 본 발명에 따른 냉난방시스템은 사방밸브의 전환을 통해 냉방운전과 난방운전의 전환이 가능할 뿐 아니라 냉방과 난방운전시 모두 급탕의 제조가 가능한 효과가 있다.As described in detail above, the cooling and heating system according to the present invention is capable of switching the cooling operation and the heating operation through the switching of the four-way valve as well as the production of hot water supply during both the cooling and heating operation.
또한 본 발명은 냉방운전과 난방운전 및 급탕을 위한 운전이 가능하기 때문에 이용효율이 높은 이점이 있으며, 압축된 고온 냉매가 팽창밸브로 흐르기에 앞서 급탕열교환기를 통해 열교환되기 때문에 시스템의 열교환효율이 높은 이점이 있다.In addition, the present invention has a high use efficiency because it is possible to operate for cooling operation, heating operation and hot water supply, and the heat exchange efficiency of the system is high because the compressed high temperature refrigerant is heat exchanged through the hot water heat exchanger before flowing to the expansion valve. There is an advantage.

Claims (8)

  1. 냉매를 압축하는 압축기, 상기 압축기의 토출 측과 흡입 측에 배관을 통해 각각 연결되며 냉매의 흐름방향을 전환시키는 사방밸브, 상기 사방밸브의 일측과 연계되는 분기배관에 각각의 일측이 병렬로 연결되는 급탕열교환기와 실내열교환기, 상기 급탕열교환기와 상기 실내열교환기의 타측으로부터 각각 연장되어 하나로 합류되는 배관에 설치되는 팽창밸브, 양측이 상기 팽창밸브와 상기 사방밸브의 타측에 각각 배관을 통해 연결되는 실외열교환기를 구비하고,Compressor for compressing the refrigerant, each of which is connected to the discharge side and the suction side of the compressor via a pipe, the four-way valve for switching the flow direction of the refrigerant, each one side is connected in parallel to the branch pipe connected to one side of the four-way valve Hot water supply heat exchanger and indoor heat exchanger, an expansion valve installed in a pipe that extends from the other side of the hot water heat exchanger and the indoor heat exchanger, respectively, and joined together, and an outdoor side having both sides connected to each other of the expansion valve and the four-way valve through pipes, respectively. Equipped with a heat exchanger,
    냉방운전시 상기 압축기로부터 토출되는 고온고압냉매가 상기 사방밸브를 통해 상기 실외열교환기를 거쳐 상기 급탕열교환기로 공급될 수 있도록 상기 실외열교환기와 상기 팽창밸브사이의 배관으로부터 분기되어 상기 급탕열교환기 입구 쪽 배관에 연결되는 제1우회배관, 냉방운전시 상기 팽창밸브를 통과한 냉매가 상기 실내열교환기를 거쳐 상기 사방밸브 쪽으로 흐를 수 있도록 상기 팽창밸브의 출구 쪽 배관으로부터 분기되어 상기 실내열교환기 쪽으로 연결되는 제2우회배관을 포함하는 것을 특징으로 하는 냉난방시스템.In the cooling operation, the high temperature and high pressure refrigerant discharged from the compressor is branched from the pipe between the outdoor heat exchanger and the expansion valve so as to be supplied to the hot water supply heat exchanger through the four-way valve through the outdoor heat exchanger. A first bypass pipe connected to the second bypass pipe and a second branch connected from the outlet pipe of the expansion valve to the indoor heat exchanger to allow the refrigerant passing through the expansion valve to flow through the indoor heat exchanger toward the four-way valve during the cooling operation; Heating and cooling system comprising a bypass pipe.
  2. 제1항에 있어서,The method of claim 1,
    냉방운전시와 난방운전시의 유로변경을 위해 상기 제1우회배관의 상기 실외열교환기 쪽 배관분기부에 마련되는 제1삼방밸브, 상기 제1우회배관의 상기 급탕열교환기 쪽 배관연결부에 마련되는 제2삼방밸브, 상기 제2우회배관의 상기 실내열교환기 쪽 배관연결부에 마련된 제3삼방밸브를 더 포함하는 것을 특징으로 하는 냉난방시스템.A first three-way valve provided in the outdoor heat exchanger side pipe branch of the first bypass pipe and a pipe connection part of the hot water supply heat exchanger side of the first bypass pipe for changing a flow path during cooling operation and heating operation; And a third three-way valve provided in a second three-way valve and a pipe connection part of the indoor heat exchanger side of the second bypass pipe.
  3. 제2항에 있어서,The method of claim 2,
    난방운전시 상기 압축기로부터 공급되는 고온고압의 냉매가 상기 제2삼방밸브와 상기 제3삼방밸브의 선택적인 개폐동작에 의해 상기 실내열교환기와 상기 급탕열교환기 중 어느 한쪽으로 공급되거나 양쪽으로 동시에 공급되도록 제어되는 것을 특징으로 하는 냉난방시스템.The high temperature and high pressure refrigerant supplied from the compressor during the heating operation is supplied to either the indoor heat exchanger or the hot water supply heat exchanger at the same time by simultaneously opening and closing the second three way valve and the third three way valve. Heating and cooling system, characterized in that controlled.
  4. 제1항에 있어서,The method of claim 1,
    상기 사방밸브를 거쳐 상기 압축기의 흡입 측으로 복귀하는 저온저압의 냉매가 상기 팽창밸브 상류 측 고온고압의 냉매와 열교환을 하도록 하는 보조열교환기를 더 포함하는 것을 특징으로 하는 냉난방시스템.And an auxiliary heat exchanger configured to exchange the low temperature and low pressure refrigerant returning to the suction side of the compressor via the four-way valve to exchange heat with the high temperature and high pressure refrigerant upstream of the expansion valve.
  5. 냉매를 압축하는 압축기, 상기 압축기의 토출 측과 흡입 측에 배관을 통해 각각 연결되며 냉매의 흐름방향을 전환시키는 사방밸브, 상기 사방밸브의 일측과 연계되는 분기배관에 각각 일측이 병렬로 연결되는 급탕열교환기와 실내열교환기, 상기 급탕열교환기와 상기 실내열교환기 타측의 배관에 각각 설치되는 제1팽창밸브와 제2팽창밸브, 상기 두 팽창밸브로부터 연장되어 하나로 합류되는 배관에 그 일측이 연결되고 타측이 상기 사방밸브에 연결되는 실외열교환기를 구비하고,Compressor for compressing the refrigerant, a four-way valve connected to the discharge side and the suction side of the compressor, respectively, to switch the flow direction of the refrigerant, a hot water supply each side connected in parallel to each branch pipe connected to one side of the four-way valve One side is connected to the first expansion valve and the second expansion valve which are respectively installed in the heat exchanger and the indoor heat exchanger, the hot water heat exchanger and the other side of the indoor heat exchanger, and the pipes extending from the two expansion valves and joined to one another, and the other side is connected. Is provided with an outdoor heat exchanger connected to the four-way valve,
    냉방운전시 상기 압축기로부터 토출되는 고온고압냉매가 상기 사방밸브를 통해 상기 실외열교환기를 거쳐 상기 급탕열교환기로 공급될 수 있도록 상기 실외열교환기와 상기 두 팽창밸브사이를 연결하는 배관으로부터 분기되어 상기 급탕열교환기 입구 쪽 배관에 연결되는 우회배관을 포함하는 것을 특징으로 하는 냉난방시스템.The hot water supply heat exchanger branched from a pipe connecting the outdoor heat exchanger and the two expansion valves so that the high temperature high pressure refrigerant discharged from the compressor during cooling operation can be supplied to the hot water supply heat exchanger through the four-way valve through the outdoor heat exchanger. Heating and cooling system comprising a bypass pipe connected to the inlet pipe.
  6. 제5항에 있어서,The method of claim 5,
    냉방운전시와 난방운전시의 유로변경을 위해 상기 우회배관의 상기 실외열교환기 쪽 배관분기부에 마련되는 제1삼방밸브, 상기 우회배관의 상기 급탕열교환기 쪽 배관연결부에 마련되는 제2삼방밸브를 더 포함하는 것을 특징으로 하는 냉난방시스템.The first three-way valve is provided in the pipe branch in the outdoor heat exchanger side of the bypass pipe for changing the flow path during the cooling operation and the heating operation, and the second three-way valve provided in the pipe connection portion of the hot water heat exchanger side of the bypass pipe. Air conditioning system characterized in that it further comprises.
  7. 제5항에 있어서,The method of claim 5,
    난방운전시 상기 압축기로부터 상기 급탕열교환기와 상기 실내열교환기로 공급되는 냉매의 양이 상기 제1팽창밸브와 상기 제2팽창밸브의 개도조절을 통해 조절되는 것을 특징으로 하는 냉난방시스템.And an amount of refrigerant supplied from the compressor to the hot water supply heat exchanger and the indoor heat exchanger is controlled by adjusting the opening degree of the first expansion valve and the second expansion valve.
  8. 제5항에 있어서,The method of claim 5,
    냉방운전시 상기 우회배관과 상기 급탕열교환기를 거친 냉매가 상기 제1팽창밸브와 상기 제2팽창밸브를 거쳐 상기 실내열교환기로 흐르는 것을 특징으로 하는냉난방시스템.And a refrigerant flowing through the bypass pipe and the hot water supply heat exchanger flows to the indoor heat exchanger through the first expansion valve and the second expansion valve.
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