KR20020083581A - Multi heat pump system with advanced heating and cooling performance - Google Patents

Multi heat pump system with advanced heating and cooling performance Download PDF

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Publication number
KR20020083581A
KR20020083581A KR1020010022967A KR20010022967A KR20020083581A KR 20020083581 A KR20020083581 A KR 20020083581A KR 1020010022967 A KR1020010022967 A KR 1020010022967A KR 20010022967 A KR20010022967 A KR 20010022967A KR 20020083581 A KR20020083581 A KR 20020083581A
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South Korea
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pump system
heat pump
auxiliary
heating
cooling
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KR1020010022967A
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Korean (ko)
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KR100419480B1 (en
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문영치
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문영치
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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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • 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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/21—Reduction of parts

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

PURPOSE: A multi-heat pump system for increasing heating and cooling capacity is provided to prevent formation of frost on a surface of an outdoor unit and to improve heating and cooling performance. CONSTITUTION: A heat pump system includes a bypass tube(7) formed for refrigerant to bypass an expansion valve and a check valve; a heating expansion valve(41), a cooling expansion valve(42), a heating check valve(51) and a cooling check valve(52) formed on the bypass tube; and an auxiliary heat pump system separately comprising an auxiliary compressor(11), a first auxiliary heat exchanger(31), a second auxiliary heat exchanger(32), a two-way expansion valve(43) and an auxiliary four-way control valve(61). One side of an outdoor system(3) and the first auxiliary heat exchanger are integrated to form an outdoor system unit(8) so as to improve condensing or expanding performance of the outdoor system by the first auxiliary heat exchanger.

Description

냉난방 증대형 멀티 히트펌프시스템{MULTI HEAT PUMP SYSTEM WITH ADVANCED HEATING AND COOLING PERFORMANCE}MULTI HEAT PUMP SYSTEM WITH ADVANCED HEATING AND COOLING PERFORMANCE}

본 발명은 냉난방 겸용 히트펌프시스템에 관한 것으로서, 특히 압축기 및 실내기의 냉난방 성능을 향상시키기 위하여 작은 용량을 갖는 별도의 보조히트펌프시스템을 형성하고, 상기 보조히트펌프시스템의 제1열교환기를 상기 실외기의 일측면에 부착 설치하여 난방시 냉매의 온도를 높이고 냉방시 냉매의 온도를 저하시켜 전반적으로 상기 실내기의 성능을 향상시키도록 한 냉난방 증대형 멀티 히트펌프시스템에 관한 것이다.The present invention relates to a heat pump system for both heating and cooling, in particular to form a separate auxiliary heat pump system having a small capacity in order to improve the cooling and heating performance of the compressor and the indoor unit, the first heat exchanger of the auxiliary heat pump system of the outdoor unit It is attached to one side to increase the temperature of the refrigerant during heating and lower the temperature of the refrigerant during cooling to improve the overall heating and cooling type multi-heat pump system to improve the performance of the indoor unit.

일반적으로 히트펌프는 도 2에 도시된 바와 같이 압축기(1); 실내기(2); 실외기(3); 팽창밸브 및 사방향제어밸브(6)로 이루어진 시스템에 냉매가 상기 팽창밸브를 우회하여 통과할 수 있도록 바이패스배관(7)을 형성하고, 상기 바이패스배관(7) 상에 난방팽창밸브(41); 냉방팽창밸브(42); 난방체크밸브(51) 및 냉방체크밸브(52)를 설치하며, 이에 따라 결정된 냉매의 유로에 의하여 상기 실내기(2)를 통한 냉난방이 가능하도록 시스템이 구성되었다. 상기 히트펌프시스템은 하절기 냉방시 상기 실외기(3)가 응축기의 역할을 하며 더운 외기와 열교환을 행하여 냉매를 응축시키는데 외기 온도 이하로 응축을 시키지 못하는 한계가 있으며, 또한 동절기 난방시 상기 실외기(3)가 증발기의 역할을 하며 차가운 외기와 열교환을 행하므로 증발량이 감소하고 따라서 냉매순환량이 감소하게 된다. 상기 냉매순환량과 난방능력을 증가시키키 위하여 상기 실내기(2)에 보조히터(10)를 부착하여 사용하고 있다. 따라서, 종래의 히트펌프시스템은 상기 실외기(3) 주변의 기온조건에 대한 의존도가 커지고, 난방시 상기 압축기(1)를 구동하기 위한 동력 뿐만 아니라 상기 보조히터(10)를 작동시키기 위한 동력이 부가되어 전력소모가 큰 문제점이 있었다.In general, the heat pump comprises a compressor (1) as shown in FIG. An indoor unit 2; An outdoor unit 3; A bypass pipe (7) is formed in the system consisting of the expansion valve and the four-way control valve (6) so that the refrigerant can bypass the expansion valve and pass through, and the heating expansion valve (41) on the bypass pipe (7). ); A cooling expansion valve 42; The heating check valve 51 and the cooling check valve 52 are installed, and the system is configured to enable cooling and heating through the indoor unit 2 by the flow path of the refrigerant determined accordingly. The heat pump system has a limit in that the outdoor unit 3 acts as a condenser during the summer cooling and condenses the refrigerant by performing heat exchange with hot air, and does not allow condensation below the ambient temperature, and the outdoor unit 3 during the winter heating. Acts as an evaporator and performs heat exchange with cold air, thereby reducing the amount of evaporation and thus reducing the refrigerant circulation. The auxiliary heater 10 is attached to the indoor unit 2 to increase the refrigerant circulation and heating capacity. Therefore, in the conventional heat pump system, the dependence on the temperature condition around the outdoor unit 3 increases, and power for driving the auxiliary heater 10 as well as power for driving the compressor 1 when heating is added. There was a big problem with power consumption.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창안한 것으로서, 본 발명의 목적은 실내기를 사용하여 냉난방을 행함에 있어서 외기에만 의존하여 냉난방 성능이 결정되는 한계를 극복하기 위하여 작은 용량을 갖는 별도의 보조히트펌프시스템을 구성하고, 하절기에는 더운 외기온도 이하로 상기 실외기를 응축시키고, 동절기에는 차가운 외기온도에 의해 상기 실외기의 표면에 서리가 맺히는 현상을 방지하며, 외기온도의 상승으로 인한 증발온도를 높여 상기 실내기에 보조히터를 사용하지 않고도 냉방 및 난방 성능을 향상시키기 위하여 상기 실외기의 일측면에 상기 보조히트펌프시스템의 제1열교환기를 부착한 냉난방 증대형 멀티 히트펌프시스템을 제공하는 것이고, 또한, 상기 실내기를 제외한 대부분의 구성을 별도의 공간에 함께 설치하여 공간 활용도를 높일 수 있도록 시스템을 구성하는 것이다.The present invention has been made to solve the above problems, an object of the present invention is to provide a separate auxiliary having a small capacity in order to overcome the limitation that the cooling and heating performance is determined only by the outside air in performing the cooling and heating using the indoor unit A heat pump system is constructed, condensing the outdoor unit to a temperature below the hot air temperature in the summer, prevents frost on the surface of the outdoor unit by the cold air temperature in the winter, and increases the evaporation temperature due to the increase in the outdoor air temperature. In order to improve cooling and heating performance without using an auxiliary heater in the indoor unit, to provide a cooling and heating type multi-heat pump system having a first heat exchanger of the auxiliary heat pump system attached to one side of the outdoor unit. Most components except the indoor unit are installed together in a separate space The system is configured to increase space utilization.

도 1은 본 발명에 의한 냉난방 증대형 멀티 히트펌프시스템의 시스템 개략도,1 is a system schematic diagram of an air-conditioning type multi heat pump system according to the present invention;

도 2는 종래의 히트펌프시스템의 시스템 개략도 이다.2 is a system schematic diagram of a conventional heat pump system.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1: 압축기11: 보조압축기1: compressor 11: auxiliary compressor

2: 실내기3: 실외기2: indoor unit 3: outdoor unit

31: 보조제1열교환기32: 보조제2열교환기31: auxiliary 1 heat exchanger 32: auxiliary 2 heat exchanger

41: 난방팽창밸브42: 냉방팽창밸브41: heating expansion valve 42: cooling expansion valve

43: 양방향팽창밸브51: 난방체크밸브43: bidirectional expansion valve 51: heating check valve

52: 냉방체크밸브6: 사방향제어밸브52: Cooling check valve 6: 4-way control valve

61: 보조사방향제어밸브7: 바이패스배관61: auxiliary four-way control valve 7: bypass piping

8: 실외기유닛10: 보조히터8: outdoor unit 10: auxiliary heater

상기와 같은 목적을 달성하기 위하여, 본 발명에 의한 냉난방 증대형 멀티 히트펌프시스템은 압축기; 실내기; 실외기; 팽창밸브; 체크밸브 및 사방향제어밸브가 순차적으로 배열되어 이루어진 히트펌프시스템에 있어서, 상기 히트펌프시스템의 상기 팽창밸브와 상기 체크밸브를 각각 우회하여 냉매가 흐를 수 있도록 바이패스배관이 형성되고, 상기 바이패스배관 상에 난방팽창밸브; 냉방팽창밸브; 난방체크밸브 및 냉방체크밸브가 형성되며, 별도의 보조압축기; 보조제1열교환기; 보조제2열교환기; 양방향팽창밸브 및 보조사방향제어밸브로 이루어진 보조히트펌프시스템을 형성하며, 상기 실외기의 일측면과 상기 보조제1열교환기를 일체화시켜 상기 보조제1열교환기에 의하여 실외기의 응축 또는 팽창성능을 향상시키기 위한 실외기유닛을 형성하여 냉난방 증대형 멀티 히트펌프시스템을 구성하고, 상기 실내기; 냉방팽창밸브 및 난방체크밸브를 제외한 구성을 실외의 별도 공간에 형성하여 상기 히트펌프시스템을 구성하는 것을 특징으로 한다.In order to achieve the above object, the heating and cooling type multi-heat pump system according to the present invention is a compressor; Indoor unit; Outdoor unit; Expansion valve; In a heat pump system in which a check valve and a four-way control valve are sequentially arranged, a bypass pipe is formed to bypass the expansion valve and the check valve of the heat pump system so that refrigerant can flow, and the bypass A heating expansion valve on the pipe; Cooling expansion valve; Heating check valve and cooling check valve is formed, a separate auxiliary compressor; Auxiliary first heat exchanger; Auxiliary second heat exchanger; An auxiliary heat pump system including a bidirectional expansion valve and an auxiliary four-direction control valve is formed, and an outdoor unit is provided to improve the condensation or expansion performance of the outdoor unit by the auxiliary first heat exchanger by integrating one side of the outdoor unit and the auxiliary first heat exchanger. A multi-heat pump system for increasing heating and cooling by forming the indoor unit; The heat pump system may be configured by forming a configuration excluding the cooling expansion valve and the heating check valve in a separate outdoor space.

본 발명에 의한 냉난방 증대형 멀티 히트펌프시스템을 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings, the heating and cooling type multi-heat pump system according to the present invention.

도 1은 본 발명에 의한 냉난방 증대형 멀티 히트펌프시스템의 시스템 개략도를 도시하고 있으며, 본 발명의 구성은 주 히트펌프시스템과 작은 용량을 갖는 보조 히트펌프시스템의 결합으로 이루어지는데, 특히 상기 주 히트펌프시스템의 상기 실외기(3)의 일측면에 상기 보조 히트펌프시스템의 상기 보조제1열교환기(31)가 부착되어 일체화된 실외기유닛(8)을 구비한 멀티타입의 히트펌프시스템으로 이루어졌다. 상기 주 히트펌프시스템은 도 2의 종래의 구성과 동일하게 이루어져 있으며, 상기 보조 히트펌프시스템은 보조압축기(11); 보조제1열교환기(31); 양방향팽창밸브(43); 보조제2열교환기(32) 및 보조사방향제어밸브(61)의 순차적인 배열로 이루어져 있다. 상기 주 히트펌프시스템은 상기 압축기(1) 출구에 형성된 상기 사방향제어밸브(6)에 의하여 냉방 또는 난방운전이 수행되며, 운전모드에 따라 주 히트펌프시스템의 바이패스배관(7)에 형성된 팽창밸브(41,42)와 체크밸브(51,52)의 개폐 작동으로 냉매의 유로가 결정된다. 또한, 상기 주 히트펌프사이클의 운전모드에 따라서 보조 사이클의 운전모드가 함께 결정되는데, 예를 들면, 상기 주 히트펌프시스템이 난방운전을 행할 경우 상기 보조 히트펌프시스템은 난방운전이 행하여지고, 상기 주 히트펌프시스템이 냉방운전을 행할 경우 상기 보조 히트펌프시스템은 역시 냉방운전이 행하여진다. 따라서, 주 히트펌프시스템의 운전모드가 보조 히트펌프시스템의 운전모드와 동일하게 작동되어야 본 발명에 의한 냉난방 효과를 증대시킬 수 있다.1 shows a system schematic diagram of an air-conditioning type multi-heat pump system according to the present invention. The configuration of the present invention consists of a combination of a main heat pump system and an auxiliary heat pump system having a small capacity. The auxiliary first heat exchanger 31 of the auxiliary heat pump system is attached to one side of the outdoor unit 3 of the pump system, and a multi-type heat pump system having the outdoor unit 8 integrated therein. The main heat pump system is the same as the conventional configuration of Figure 2, the auxiliary heat pump system comprises an auxiliary compressor (11); Auxiliary first heat exchanger (31); Bidirectional expansion valve (43); It consists of a sequential arrangement of the auxiliary second heat exchanger (32) and the auxiliary four-direction control valve (61). The main heat pump system performs cooling or heating operation by the four-way control valve 6 formed at the outlet of the compressor 1, and expands the bypass pipe 7 of the main heat pump system according to the operation mode. The flow path of the refrigerant is determined by the opening and closing operations of the valves 41 and 42 and the check valves 51 and 52. Further, the operation mode of the auxiliary cycle is determined together according to the operation mode of the main heat pump cycle. For example, when the main heat pump system performs a heating operation, the auxiliary heat pump system performs a heating operation. When the primary heat pump system performs the cooling operation, the auxiliary heat pump system is also subjected to the cooling operation. Therefore, the operation mode of the main heat pump system must be operated in the same manner as the operation mode of the auxiliary heat pump system to increase the cooling and heating effect according to the present invention.

본 발명에 의한 실시예를 첨부한 도면을 참조하여 냉방 운전시와 난방 운전시 주 히트펌프시스템과 보조 히트펌프시스템 간의 에너지 수수의 관계를 각각의 경우에 대하여 구분하여 설명하고자 한다.With reference to the accompanying drawings an embodiment according to the present invention will be described separately the relationship between the energy transfer between the main heat pump system and the auxiliary heat pump system in the cooling operation and heating operation for each case.

먼저, 냉방운전시 주 히트펌프시스템의 상기 압축기(1)로부터 토출된 고온고압의 냉매가스는 상기 사방향제어밸브(6)를 통과하여 상기 실외기(3)로 유입된다. 이때 보조 히트펌프시스템은 상기 주 히트펌프시스템과 동일하게 냉방운전이 행하여 지는데 상기 보조 히트펌프시스템의 상기 보조제1열교환기(31)는 증발기 역할을 하며, 외기와 열교환을 행하면서 저온으로 외기를 방출시키는데, 저온의 외기를 팬에 의하여 상기 보조제1열교환기(31)의 일측면에 부착된 상기 실외기(3)로 송풍하여 상기 실외기(3)를 상온 이하로 응축시켜주며, 상기 주 히트펌프시스템의 상기 실내기(2)에 공급되는 냉매의 온도를 더욱 낮추어 공급하므로 냉방성능의 향상을 가져올 수 있다. 상기 실외기(3)를 통과한 저온고압의 냉매액은 냉매의 우회 통과를 위해 마련된 바이패스배관(7)에 형성된 냉방체크밸브(52)와 냉방팽창밸브(42)를 지나게 되며, 저온고압의 상기 냉매액은 상기 냉방팽창밸브(42)를 지나면서 교축팽창을 하여 저온저압의 습증기냉매로 상태가 변하면서 상기 실내기(2)로 유입된다.상기 실내기(2)로 유입된 저온저압의 습증기냉매는 실내공기와 열교환을 행하면서 증발이 되는데 이때 발생되는 증발잠열에 의하여 실내의 공기의 열을 흡수하면서 실내의 냉방을 행하게 되며, 이때 냉매는 중온저압의 기체냉매로 상태가 변하게되고 다시 상기 사방향제어밸브(6)를 통하여 상기 압축기(1)로 유입된다.First, the high-temperature, high-pressure refrigerant gas discharged from the compressor 1 of the main heat pump system during the cooling operation flows into the outdoor unit 3 through the four-way control valve 6. At this time, the auxiliary heat pump system is cooled in the same manner as the main heat pump system. The auxiliary first heat exchanger 31 of the auxiliary heat pump system functions as an evaporator, and discharges outside air at low temperature while performing heat exchange with the outside air. By blowing a low-temperature outdoor air to the outdoor unit (3) attached to one side of the auxiliary heat exchanger (31) by a fan to condense the outdoor unit (3) below room temperature, the main heat pump system Since the temperature of the refrigerant supplied to the indoor unit 2 is further lowered and supplied, an improvement in cooling performance may be brought about. The low temperature and high pressure refrigerant liquid passing through the outdoor unit (3) passes through the cooling check valve (52) and the cooling expansion valve (42) formed in the bypass pipe (7) provided for bypassing the refrigerant. The coolant liquid flows into the indoor unit 2 while undergoing throttle expansion while passing through the cooling expansion valve 42 to change into a low temperature low pressure wet steam refrigerant. The low temperature low pressure wet steam refrigerant introduced into the indoor unit 2 is The evaporation is performed while heat-exchanging with indoor air. At this time, the indoor air is cooled by absorbing the heat of the indoor air by the latent heat of evaporation. At this time, the refrigerant is changed into a medium-temperature low-pressure gas refrigerant, and the four-direction control It enters the compressor 1 through the valve 6.

난방운전시 상기 주 히트펌프시스템의 상기 압축기(1)로부터 토출된 고온고압의 냉매가스는 상기 사방향제어밸브(6)를 통과하여 상기 실내기(2)로 유입되어지며, 이때 상기 실내기(2)는 응축기 역할을 하면서 실내공기와 열교환을 행하면서 실내의 난방을 행하게 된다. 상기 실내기(2)를 통과한 저온고압의 냉매액은 상기 바이패스배관(7)에 형성된 상기 난방체크밸브(51)와 상기 난방팽창밸브(41)를 지나면서 저온저압의 냉매기체로 상태가 변하여 상기 실외기(3)로 유입된다. 상기 주 히트펌프시스템이 난방운전을 하면 상기 보조 히트펌프시스템도 역시 난방운전을 행하게 되며, 상기 보조 히트펌프시스템의 보조압축기(11)로부터 토출된 고온고압의 냉매기체는 응축기 역할을 수행하는 상기 보조제1열교환기(31)를 통과하게 되는데, 상기 보조제1열교환기(31)에서 외기로 방출된 고온의 열에너지를 팬의 작동으로 상기 보조제1열교환기(31)의 일측면에 부착된 상기 주 히트펌프시스템의 실외기(3)로 공급하여 저온저압의 냉매의 증발압력을 높여 상기 압축기(1)로 유입시킨다. 이와 같이 상기 실외기(3)로 공급된 열에너지는 동절기에 증발기 역할을 하는 주 히트펌프시스템의 실외기(3) 표면에 서리가 발생되어 원활한 열교환을 방해하는 문제를 해결할 뿐만 아니라 상기 실외기(3)의 온도를 높여줌으로써 주 히트펌프시스템의 난방효율을 향상시켜줄 수 있었다.During the heating operation, the high temperature and high pressure refrigerant gas discharged from the compressor 1 of the main heat pump system is introduced into the indoor unit 2 through the four-way control valve 6, wherein the indoor unit 2 The condenser acts as a condenser and heats the room while conducting heat exchange with the room air. The low temperature and high pressure refrigerant liquid that has passed through the indoor unit (2) passes through the heating check valve (51) and the heating expansion valve (41) formed in the bypass pipe (7) and changes to a low temperature low pressure refrigerant gas. Flows into the outdoor unit (3). When the main heat pump system performs a heating operation, the auxiliary heat pump system also performs a heating operation, and the high temperature and high pressure refrigerant gas discharged from the auxiliary compressor 11 of the auxiliary heat pump system serves as a condenser. The first heat exchanger 31 passes through the main heat pump attached to one side of the first heat exchanger 31 by the operation of a fan to operate the high temperature heat energy emitted from the first heat exchanger 31 to the outside air. Supply to the outdoor unit (3) of the system to increase the evaporation pressure of the low-temperature low-pressure refrigerant to flow into the compressor (1). In this way, the heat energy supplied to the outdoor unit 3 not only solves the problem that frost is generated on the surface of the outdoor unit 3 of the main heat pump system serving as an evaporator in winter to prevent smooth heat exchange, and also the temperature of the outdoor unit 3. Increasing the efficiency of the main heat pump system could improve the heating efficiency.

이상에서 설명한 본 발명에 의한 냉난방 증대형 멀티 히트펌프시스템은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 냉난방 운전을 제어하기 위한 수단으로 전자제어수단 등을 구비한 다양한 변형 실시예에 의해서도 구현이 가능하다.The heating and cooling type multi-heat pump system according to the present invention described above is not limited to the above-described embodiment and the accompanying drawings, and is provided in various modified embodiments including electronic control means as means for controlling the heating and cooling operation. It can also be implemented.

상술한 바와 같이 본 발명은 주 히트펌프시스템의 실외기의 일측면에 보조 히트펌프시스템의 보조제1열교환기를 부착하여 열에너지를 공급함으로써 난방시에는 상기 실외기의 예열 및 제상을 행하며, 냉방시에는 상기 실외기를 외기온도 이하로 응축시켜 주 히트펌프시스템의 냉난방효율을 향상시킬 수 있었으며, 난방시 상기 실외기의 예열로인하여 시스템의 전반적인 온도가 상승하게 되므로 종래의 실내기에 부착된 보조히터를 생략하여 실시 할 수 있는 냉난방 증대형 멀티 히트펌프시스템을 제공하였다.As described above, the present invention attaches an auxiliary first heat exchanger of the auxiliary heat pump system to one side of the outdoor unit of the main heat pump system to supply thermal energy to preheat and defrost the outdoor unit during heating, and to cool the outdoor unit during cooling. By condensing below the outside air temperature, the heating and cooling efficiency of the main heat pump system could be improved, and the overall temperature of the system increases due to the preheating of the outdoor unit during heating, so that the auxiliary heater attached to the indoor unit can be omitted. Provided an air conditioning heating multi-heat pump system.

Claims (2)

압축기(1); 실내기(2); 실외기(3); 팽창밸브; 체크밸브 및 사방향제어밸브(6)가 순차적으로 배열되어 이루어진 히트펌프시스템에 있어서,Compressor 1; An indoor unit 2; An outdoor unit 3; Expansion valve; In a heat pump system in which check valves and four-way control valves 6 are sequentially arranged, 상기 히트펌프시스템의 상기 팽창밸브와 상기 체크밸브를 각각 우회하여 냉매가 흐를 수 있도록 바이패스배관(7)이 형성되고,Bypass piping 7 is formed to bypass the expansion valve and the check valve of the heat pump system, respectively, so that refrigerant flows, 상기 바이패스배관(7) 상에 난방팽창밸브(41); 냉방팽창밸브(42); 난방체크밸브(51) 및 냉방체크밸브(52)가 형성되며,A heating expansion valve 41 on the bypass pipe 7; A cooling expansion valve 42; Heating check valve 51 and the cooling check valve 52 is formed, 별도의 보조압축기(11); 보조제1열교환기(31); 보조제2열교환기(32); 양방향팽창밸브(43) 및 보조사방향제어밸브(61)로 이루어진 보조히트펌프시스템을 형성하며,A separate auxiliary compressor (11); Auxiliary first heat exchanger (31); Auxiliary second heat exchanger (32); To form an auxiliary heat pump system consisting of a two-way expansion valve 43 and the auxiliary four-directional control valve 61, 상기 실외기(3)의 일측면과 상기 보조제1열교환기(31)를 일체화시켜 상기 보조제1열교환기(31)에 의하여 실외기(3)의 응축 또는 팽창성능을 향상시키기 위한 실외기유닛(8)을 형성하여 이루어진 것을 특징으로 하는 냉난방 증대형 멀티 히트펌프시스템.One side of the outdoor unit 3 and the auxiliary first heat exchanger 31 are integrated to form an outdoor unit 8 for improving the condensation or expansion performance of the outdoor unit 3 by the auxiliary first heat exchanger 31. Heating and cooling type multi-heat pump system, characterized in that made. 제1항에 있어서,The method of claim 1, 상기 실내기(2); 냉방팽창밸브(42) 및 난방체크밸브(51)를 제외한 구성을 실외의 별도 공간에 형성하여 히트펌프시스템을 구성한 것을 특징으로 하는 냉난방 증대형 멀티 히트펌프시스템.The indoor unit (2); A heating and cooling type multi-heat pump system, comprising a cooling pump expansion valve 42 and a heating check valve (51) formed in a separate outdoor space to form a heat pump system.
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