KR100688170B1 - Heat pump type air conditioner - Google Patents

Heat pump type air conditioner Download PDF

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Publication number
KR100688170B1
KR100688170B1 KR1020040113573A KR20040113573A KR100688170B1 KR 100688170 B1 KR100688170 B1 KR 100688170B1 KR 1020040113573 A KR1020040113573 A KR 1020040113573A KR 20040113573 A KR20040113573 A KR 20040113573A KR 100688170 B1 KR100688170 B1 KR 100688170B1
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KR
South Korea
Prior art keywords
heating
air
outdoor unit
refrigerant
combined
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KR1020040113573A
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Korean (ko)
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KR20060075026A (en
Inventor
윤석호
윤필현
황일남
권기백
최진하
Original Assignee
엘지전자 주식회사
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Priority to KR1020040113573A priority Critical patent/KR100688170B1/en
Priority to EP10182046A priority patent/EP2309210A1/en
Priority to EP05258018A priority patent/EP1686332A3/en
Priority to US11/316,988 priority patent/US20060156751A1/en
Priority to CNA2005100488016A priority patent/CN1808020A/en
Publication of KR20060075026A publication Critical patent/KR20060075026A/en
Application granted granted Critical
Publication of KR100688170B1 publication Critical patent/KR100688170B1/en

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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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
    • 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
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0252—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses
    • F25B2313/02521—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses during cooling
    • 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
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0252—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses
    • F25B2313/02523—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses during heating
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2500/02—Increasing the heating capacity of a reversible cycle during cold outdoor conditions

Abstract

본 발명에 따른 히트펌프식 공기조화기는 냉난방 겸용 실외기와 별도로 설치되어, 난방 작동시 상기 냉난방 겸용 실외기의 난방 용량보다 추가용량이 필요한 경우에만 추가용량을 공급하도록 난방 전용 실외기가 설치됨으로써, 한냉지역과 같은 추운지역에 대응하기 위해 필요이상의 대용량 실외기를 설치할 필요가 없기 때문에 설치 및 관리비용을 절감할 수 있는 효과가 있다. Heat pump type air conditioner according to the present invention is installed separately from the air-conditioning combined outdoor unit, the heating only outdoor unit is installed so as to supply only the additional capacity when the heating capacity of the combined heating and outdoor unit when the heating operation, the cold-cooled area and Since it is not necessary to install a large capacity outdoor unit more than necessary to cope with the same cold area, it is possible to reduce installation and management costs.

히트 펌프, 공기조화기, 난방 전용, 한냉지Heat Pump, Air Conditioner, Exclusive Heating, Cold

Description

히트펌프식 공기조화기 {Heat pump type air conditioner} Heat pump type air conditioner {Heat pump type air conditioner}             

도 1은 본 발명의 제 1실시예에 따른 히트펌프식 공기조화기의 냉방작동상태가 도시된 구성도,1 is a configuration diagram showing a cooling operation state of the heat pump type air conditioner according to the first embodiment of the present invention;

도 2는 본 발명의 제 1실시예에 따른 히트펌프식 공기조화기의 난방작동상태가 도시된 구성도,2 is a configuration diagram showing a heating operation state of the heat pump type air conditioner according to the first embodiment of the present invention;

도 3은 본 발명의 제 2실시예에 따른 히트펌프식 공기조화기의 냉방 작동상태가 도시된 구성도. 3 is a configuration diagram showing a cooling operation state of the heat pump type air conditioner according to the second embodiment of the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

50: 냉난방 겸용 실외기 51: 제 1압축기50: outdoor unit for both air conditioning and heating 51: first compressor

52: 제 2압축기 53: 사방밸브52: second compressor 53: four-way valve

54: 실외 열교환기 55: 팽창기구54: outdoor heat exchanger 55: expansion mechanism

56: 공용 어큐뮬레이터 57: 제 1흡입유로56: common accumulator 57: first suction flow path

58: 제 2흡입유로 60: 냉난방 겸용 실내기58: second suction flow path 60: indoor unit for cooling and heating

61: 실내 열교환기 62: 제 1냉매배관61: indoor heat exchanger 62: first refrigerant piping

63: 제 2냉매배관 64: 제 1토출유로 63: second refrigerant piping 64: the first discharge passage

65: 제 2토출유로 66: 제 1체크밸브65: 2nd discharge flow path 66: 1st check valve

67: 제 2체크밸브 68: 토출 합지유로67: second check valve 68: discharge sum flow path

70: 난방 전용 실외기 71, 81: 난방 전용 압축기70: outdoor unit for heating 71, 81: compressor for heating

72, 82: 난방 전용 실외 열교환기 73: 팬72, 82: dedicated outdoor heat exchanger 73: fan

74, 84: 어큐뮬레이터 75, 85: 난방 전용 흡입유로74, 84: accumulators 75, 85: dedicated suction flow path for heating

76: 체크밸브 77, 86: 난방 전용 토출유로76: check valve 77, 86: discharge flow path dedicated to heating

78, 83: 전자팽창밸브 80: 냉방 전용 실외기78, 83: electronic expansion valve 80: cooling outdoor unit

본 발명은 히트펌프식 공기조화기에 관한 것으로서, 특히 난방 작동시 냉난방 겸용 실외기의 난방 용량보다 추가용량이 필요한 경우 추가용량을 공급할 수 있도록 형성된 난방 전용 실외기가 추가로 설치됨으로써, 필요 이상의 대용량 실외기를 설치하는 데 드는 비용을 절감시킬 수 있는 히트펌프식 공기조화기에 관한 것이다.The present invention relates to a heat pump type air conditioner, and in particular, a heating outdoor unit is formed to provide an additional capacity when an additional capacity is required when the heating capacity of the outdoor unit for both heating and heating is required. It relates to a heat pump air conditioner that can reduce the cost of doing so.

일반적으로 공기조화기는 보다 쾌적한 실내 환경을 조성하기 위하여 실내를 냉방 또는 난방시키는 장치로서, 실내 공기를 흡입한 후 가열 또는 냉각시켜 실내로 토출한다.In general, an air conditioner is a device that cools or heats a room in order to create a more comfortable indoor environment. The air conditioner sucks indoor air and heats or cools it to discharge the room.

종래 기술에 따른 공기조화기는 저온 저압의 기체 상태의 냉매를 고온 고압으로 압축시키는 압축기와, 상기 압축기로부터 토출된 냉매를 응축시키는 응축기(난방시에는 실내 열교환기, 냉방시에는 실외 열교환기)와, 상기 응축기에 의해 응축된 액냉매를 팽창시키는 팽창기구와, 상기 팽창기구로부터 유입된 냉매를 증발시키는 증발기(난방시에는 실외 열교환기, 냉방시에는 실내 열교환기)와, 냉방 또는 난방 작동에 따라 냉매 흐름을 절환시키는 사방밸브를 포함하여 구성된다. The air conditioner according to the prior art is a compressor for compressing a low-temperature low-pressure gaseous refrigerant to a high temperature and high pressure, a condenser (condensation heat exchanger for heating, outdoor heat exchanger for cooling), and condensation of the refrigerant discharged from the compressor, An expansion mechanism for expanding the liquid refrigerant condensed by the condenser, an evaporator (an outdoor heat exchanger for heating, an indoor heat exchanger for cooling), and a refrigerant according to cooling or heating operation It comprises a four-way valve for switching the flow.

상기 압축기와 실외 열교환기는 실외기에 설치되고, 상기 팽창기구와 실내 열교환기는 실내기에 설치된다. The compressor and the outdoor heat exchanger are installed in the outdoor unit, and the expansion mechanism and the indoor heat exchanger are installed in the indoor unit.

상기 실외기와 실내기는 각각 복수개가 구비되고, 상기 실외기와 실내기의 냉매배관은 서비스 밸브에 의해 연결된다. The outdoor unit and the indoor unit are each provided in plural, and refrigerant pipes of the outdoor unit and the indoor unit are connected by a service valve.

상기와 같이 구성된 종래 기술에 따른 공기조화기는 냉방 운전시는 상기 압축기에서 압축된 냉매가 상기 사방밸브에 의해 상기 실외 열교환기로 보내지고, 상기 실외열교환기를 통과하는 냉매는 주변공기와의 열교환으로 응축된 후, 상기 팽창기구로 보내진다.In the air conditioner according to the related art, the refrigerant compressed in the compressor is sent to the outdoor heat exchanger by the four-way valve during the cooling operation, and the refrigerant passing through the outdoor heat exchanger is condensed by heat exchange with ambient air. Then, it is sent to the expansion mechanism.

상기 팽창기구에서 팽창된 냉매는 상기 실내 열교환기로 유입되어, 실내공기의 열을 흡수하면서 증발되어, 실내를 냉방시키게 된다.The refrigerant expanded in the expansion mechanism flows into the indoor heat exchanger and evaporates while absorbing heat of indoor air, thereby cooling the room.

한편, 난방운전시에는 상기 사방밸브에서 유로가 절환되어, 상기 압축기에서 토출된 냉매는 상기 사방밸브, 실내 열교환기, 팽창기구, 실외 열교환기, 사방밸브를 차례로 통과하면서, 실내를 난방시키게 된다. On the other hand, during the heating operation, the flow path is switched in the four-way valve, and the refrigerant discharged from the compressor heats the room while sequentially passing through the four-way valve, the indoor heat exchanger, the expansion mechanism, the outdoor heat exchanger, and the four-way valve.

그러나, 종래 기술에 따른 공기조화기는 한냉지역에서 사용되기 위해서는 약 영하 15도 정도의 한냉지역에 대응할 수 있는 대용량 실외기를 구입, 설치해야 하기 때문에 구입 비용 및 설치 면적이 증가되는 문제점이 있을 뿐만 아니라, 한냉지역에서 영하 15도 정도의 날씨는 연중 약 20일 내외에 불과하기 때문에 나머지 기간에는 대용량 실외기가 불필요하기 때문에 실외기 자원의 낭비가 발생되는 문제점이 있다. However, since the air conditioner according to the prior art has to buy and install a large-scale outdoor unit that can cope with a cold region of about minus 15 degrees in order to be used in a cold region, the purchase cost and the installation area are increased. Since the weather of about 15 degrees below zero in the cold region is only about 20 days of the year, there is a problem that waste of outdoor unit resources occurs because a large capacity outdoor unit is unnecessary in the remaining period.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 난방 능력이 추가될 수 있도록 한냉지 대응 추가 유닛을 설치함으로써, 대용량 실외기를 설치하는 데 드는 비용 및 설치면적을 감소시킬 수 있는 공기조화기를 제공하는데 그 목적이 있다.
The present invention has been made to solve the above problems of the prior art, by installing a cold-cold paper additional unit so that the heating capacity can be added, air that can reduce the cost and installation area for installing a large capacity outdoor unit The purpose is to provide a harmonic.

상기한 과제를 해결하기 위한 본 발명에 따른 히트펌프식 공기조화기는 압축기와, 사방밸브와, 실외 열교환기가 포함된 적어도 하나 이상의 냉난방 겸용 실외기와, 상기 실외기와 냉매배관으로 연결된 적어도 하나 이상의 냉난방 겸용 실내기와, 상기 냉난방 겸용 실외기와 별도로 설치되어, 난방 작동시 상기 냉난방 겸용 실외기의 난방 용량보다 추가용량이 필요한 경우 추가용량을 공급할 수 있도록 형성된 난방 전용 실외기를 포함하여 구성된 것을 특징으로 한다.Heat pump type air conditioner according to the present invention for solving the above problems is a compressor, a four-way valve, at least one outdoor air conditioner combined with an outdoor heat exchanger, at least one indoor air conditioner combined with the outdoor unit and a refrigerant pipe And, it is installed separately from the air-conditioning combined outdoor unit, characterized in that configured to include a heating-only outdoor unit configured to supply an additional capacity if the additional capacity is required than the heating capacity of the combined air-conditioning and outdoor unit during heating operation.

이하, 본 발명의 실시 예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 제 1실시예에 따른 히트펌프식 공기조화기의 냉방작동상태가 도시된 구성도이고, 도 2는 본 발명의 제 1실시예에 따른 히트펌프식 공기조화기의 난방작동상태가 도시된 구성도이다.1 is a configuration diagram showing a cooling operation state of the heat pump type air conditioner according to the first embodiment of the present invention, Figure 2 is a heating operation of the heat pump type air conditioner according to the first embodiment of the present invention A state diagram is shown.

본 발명의 제 1실시예에 따른 히트펌프식 공기조화기는 도 1 및 도 2에 도시된 바와 같이, 압축기(51)(52)와, 사방밸브(53)와, 실외 열교환기(54)가 포함된 적어도 하나 이상의 냉난방 겸용 실외기(50)와, 상기 냉난방 겸용 실외기(50)와 냉매배관으로 연결된 적어도 하나 이상의 냉난방 겸용 실내기(60)와, 상기 냉난방 겸용 실외기(50)와 별도로 설치되어, 난방 작동시 상기 냉난방 겸용 실외기(50)의 난방 용량보다 추가용량이 필요한 경우 추가용량을 공급할 수 있도록 형성된 난방 전용 실외기(70)를 포함하여 구성된다. As shown in FIGS. 1 and 2, the heat pump type air conditioner according to the first embodiment of the present invention includes a compressor (51) (52), a four-way valve (53), and an outdoor heat exchanger (54). Installed separately from the at least one air-conditioning combined outdoor unit 50, at least one air-conditioning combined outdoor unit 50 connected to the refrigerant-cooling combined outdoor unit 50, and a refrigerant pipe, and the air-conditioning combined outdoor unit 50, It is configured to include a heating-only outdoor unit 70 formed to supply the additional capacity when the additional capacity is required than the heating capacity of the combined air-conditioning outdoor unit 50.

상기 냉난방 겸용 실외기(50)는 복수개가 구비되는 것이 가능하나, 여기서는 2개가 구비되는 것으로 한정하여 설명하며, 상기 냉난방 겸용 실외기(50)에는 팽창기구(55)가 더 포함되어 구성된다. The air-conditioning combined outdoor unit 50 may be provided in plural numbers, but the present invention is limited to two units provided here. The air-conditioning combined outdoor unit 50 further includes an expansion mechanism 55.

상기 실외 열교환기(54)는 냉방시에는 응축기역할을 하고, 난방시에는 증발기역할을 하도록 구성되며, 상기 사방밸브(53)는 냉방 또는 난방 작동에 따라 냉매의 흐름을 절환시키도록 구성된다. The outdoor heat exchanger 54 serves as a condenser when cooling, and serves as an evaporator when heating, and the four-way valve 53 is configured to switch the flow of refrigerant according to cooling or heating operation.

그리고, 상기 냉난방 겸용 실내기(60)에는 냉방시에는 증발기역할을 하고, 난방시에는 응축기역할을 하는 실내 열교환기(61)가 설치된다. In addition, the indoor heat exchanger 61 which serves as an evaporator at the time of cooling and the condenser at the time of heating is installed in the air conditioner combined indoor unit 60.

상기 냉난방 겸용 실외기(50)와 냉난방 겸용 실내기(60)는 냉매배관으로 연결되는 바, 상기 냉매배관은 난방작동시 상기 냉난방 겸용 실내기(60)로부터 상기 냉난방 겸용 실외기(50)측으로 냉매가 유입되도록 형성된 제 1냉매배관(62)과, 상기 냉난방 겸용 실외기(50)로부터 상기 냉난방 겸용 실내기(60)측으로 냉매가 배출되도록 형성된 제 2냉매배관(63)으로 이루어진다. The air-conditioning combined outdoor unit 50 and the air-conditioning combined indoor unit 60 are connected to a refrigerant pipe, and the refrigerant pipe is formed such that refrigerant flows from the air-conditioning combined indoor unit 60 into the air-conditioning combined outdoor unit 50 during heating operation. It consists of a first refrigerant pipe 62 and the second refrigerant pipe 63 formed to discharge the refrigerant from the air-conditioning combined outdoor unit 50 to the air-conditioning combined indoor unit 60 side.

상기 압축기는 두 개의 제 1,2압축기(51)(52)로 이루어지고, 상기 제 1,2압축기(51)(52)는 공용 어큐뮬레이터(56)에 의해 연결되는 바, 상기 공용 어큐뮬레이터(56)는 상기 제 1,2압축기(51)(52)에 각각 구비된 제 1,2흡입유로(57)(58)와 연결된다. The compressor consists of two first and second compressors 51 and 52, and the first and second compressors 51 and 52 are connected by a common accumulator 56, and the common accumulator 56 Is connected to the first and second suction passages 57 and 58 provided in the first and second compressors 51 and 52, respectively.

상기 제 1,2압축기(51)(52)의 각각에는 상기 제 1,2압축기(51)(52)에서 고온 고압으로 압축된 기체 냉매가 배출되는 제 1,2토출유로(64)(65)가 연결되고, 상기 제 1,2토출유로(64)(65)에는 고온 고압의 기체 냉매가 역류되지 않도록 제 1,2체크밸브(66)(67)가 각각 장착된다. Each of the first and second compressors 51 and 52 includes first and second discharge passages 64 and 65 through which gas refrigerant compressed by high temperature and high pressure is discharged from the first and second compressors 51 and 52. Are connected, and the first and second check valves 66 and 67 are respectively installed in the first and second discharge passages 64 and 65 so as to prevent the high-temperature, high-pressure gas refrigerant from flowing back.

상기 제 1,2토출유로(64)(65)는 토출된 냉매를 상기 사방밸브(53)로 안내하는 제 3토출유로(68)에 합지된다. The first and second discharge passages 64 and 65 are laminated to the third discharge passage 68 which guides the discharged refrigerant to the four-way valve 53.

한편, 상기 난방 전용 실외기(70)에는 난방 전용 압축기(71)와, 난방 전용 실외 열교환기(72)와, 상기 냉난방 겸용 실내기(60)로부터 냉매가 유입되는 유로를 개폐시키는 밸브수단을 포함하여 구성된다. Meanwhile, the heating-only outdoor unit 70 includes a heating-only compressor 71, a heating-only outdoor heat exchanger 72, and valve means for opening and closing a flow path through which refrigerant is introduced from the indoor / heating unit 60 for both heating and cooling. do.

상기 난방 전용 압축기(71)는 정속형 압축기이고, 상기 난방 전용 실외 열교환기(72)에는 실외 공기를 상기 난방 전용 실외 열교환기(72)측으로 송풍시키는 팬(73)이 설치된다. The heating-only compressor 71 is a constant speed type compressor, and the heating-only outdoor heat exchanger 72 is provided with a fan 73 for blowing outdoor air toward the heating-only outdoor heat exchanger 72.

상기 난방 전용 압축기(71)의 흡입부측에는 상기 난방 전용 압축기(71)로 흡입되는 흡입 냉매 중 액냉매가 축적되도록 하는 어큐뮬레이터(74)가 설치된다. An accumulator 74 is installed on the suction side of the heating compressor 71 to accumulate the liquid refrigerant in the suction refrigerant sucked by the heating compressor 71.

그리고, 상기 난방 전용 압축기(71)에는 상기 난방 전용 압축기(71)에서 압축되어 토출된 냉매가 상기 냉난방 겸용 실내기(60)로 안내되도록 난방 전용 토출유로(75)가 형성되는 바, 상기 난방 전용 토출유로(75)는 상기 제 2냉매배관(63)에 연결된다. In addition, the heating-only compressor 71 is provided with a heating-only discharge passage 75 so that the refrigerant compressed and discharged by the heating-only compressor 71 is guided to the indoor unit 60 for both heating and cooling. The flow path 75 is connected to the second refrigerant pipe 63.

상기 난방 전용 토출유로(75)상에는 냉방 작동시 상기 난방 전용 압축기(71)로 냉매가 역류되는 것을 차단하는 체크밸브(76)가 설치된다. A check valve 76 is installed on the heating-only discharge passage 75 to block the refrigerant from flowing back to the heating-only compressor 71 during the cooling operation.

그리고, 상기 냉난방 겸용 실내기(60)와 상기 난방 전용 실외기(70) 사이에는 상기 냉난방 겸용 실내기(60)로부터 상기 난방 전용 실외 열교환기(72)로 냉매가 흡입되도록 난방 전용 흡입유로(77)가 연결되는 바, 상기 난방 전용 흡입유로(77)는 상기 제 1냉매배관(62)에 연결된다. In addition, a heating suction channel 77 is connected between the cooling / cooling indoor unit 60 and the heating-only outdoor unit 70 so that refrigerant is sucked from the cooling / cooling indoor unit 60 to the heating-only outdoor heat exchanger 72. The heating dedicated suction flow path 77 is connected to the first refrigerant pipe 62.

한편, 상기 밸브수단은 상기 난방 전용 흡입유로(77)상에 설치되어, 난방 작동시 개방되어 상기 냉난방 겸용 실내기(60)로부터 유입되는 냉매를 팽창시키고, 냉방 작동시는 밀폐되어 상기 냉난방 겸용 실내기(60)로부터 냉매가 유입되지 않도록 차단하는 전자팽창밸브(78)이다.On the other hand, the valve means is installed on the heating dedicated suction flow path 77, is opened during the heating operation to expand the refrigerant flowing from the air-conditioning combined indoor unit 60, the air-conditioning combined indoor unit is closed during the cooling operation ( 60 is an electromagnetic expansion valve 78 to block the refrigerant from entering.

상기 냉난방 겸용 실외기(50)는 일반적인 표준 온도 조건에서 냉난방 부하에 대응할 수 있는 용량으로 선정되어 설치되고, 상기 난방 전용 실외기(70)는 겨울철의 아주 추운 한냉지역 등과 같은 곳에 대응하기 위해 상기 냉난방 겸용 실외기(50)의 난방 용량보다 더 요구되는 추가용량만큼으로 선정되어 설치되는 것이 바람직하다. The air-conditioning combined outdoor unit 50 is selected and installed as a capacity capable of responding to a heating / cooling load under a general standard temperature condition, and the heating-only outdoor unit 70 is combined with the air-conditioning outdoor unit in order to cope with a place such as a very cold cold region in winter. It is preferable to select and install as much as the additional capacity required more than the heating capacity of 50.

한편, 상기 히트펌프식 공기조화기는 일반적인 표준 온도 조건이나 냉방 작동시에는 상기 냉난방 겸용 실외기(50)가 사용되지 않도록 상기 전자팽창밸브(77)를 밀폐시키고, 상기 냉난방 겸용 실외기(50)의 난방용량보다 추가용량이 필요한 경우 상기 전자팽창밸브(77)를 개방시키는 제어부(미도시)가 더 포함된다. On the other hand, the heat pump type air conditioner seals the electronic expansion valve (77) so that the air-conditioning combined outdoor unit (50) is not used during normal standard temperature conditions or cooling operation, and the heating capacity of the air-conditioning combined outdoor unit (50) A control unit (not shown) for opening the electromagnetic expansion valve 77 is further included when additional capacity is required.

상기와 같이 구성된 본 발명에 따른 히트 펌프식 공기조화기의 작동을 살펴보면 다음과 같다.Looking at the operation of the heat pump type air conditioner according to the present invention configured as described above are as follows.

먼저, 냉방 작동시에는 상기 사방밸브(53)가 냉방모드로 절환되고, 상기 제 1,2압축기(51)(52)에서 압축된 냉매는 상기 제 1,2토출유로(64)(65)를 통해 각각 토출된 후, 상기 토출 합지유로(68)에서 합류되어 상기 사방밸브(53), 실외 열교환기(54), 팽창기구(55), 실내 열교환기(61)를 차례로 통과한 후, 다시 상기 사방밸브(53), 공용 어큐뮬레이터(56)를 통해 상기 제 1,2압축기(51)(52)로 순환되게 된다. First, during the cooling operation, the four-way valve 53 is switched to the cooling mode, and the refrigerant compressed by the first and second compressors 51 and 52 passes through the first and second discharge passages 64 and 65. After discharged through each, and then joined in the discharge lamination passage (68) to pass through the four-way valve 53, outdoor heat exchanger 54, expansion mechanism 55, indoor heat exchanger 61 in turn, and then again The four-way valve 53 and the common accumulator 56 are circulated to the first and second compressors 51 and 52.

여기서, 상기 냉매는 상기 실내 열교환기(61)를 통과하면서 실내 공기의 열을 흡수하여 증발됨으로써, 실내를 냉방시키게 된다. Here, the refrigerant absorbs heat of indoor air while passing through the indoor heat exchanger 61 and evaporates, thereby cooling the room.

이 때, 냉방 작동시에는 상기 난방 전용 실외기(70)에서 상기 전자팽창밸브(78)는 밀폐되어, 상기 실내 열교환기(61)로부터 상기 난방 전용 흡입유로(77)를 통해 상기 난방 전용 실외기(70)로 냉매가 흡입되는 것이 차단되게 되므로, 상기 난방 전용 실외기(70)는 작동되지 않게 된다. At this time, during the cooling operation, the electromagnetic expansion valve 78 is sealed in the heating-only outdoor unit 70, and the heating-only outdoor unit 70 is provided from the indoor heat exchanger 61 through the heating-only suction flow path 77. Since the refrigerant is blocked by suction, the heating-only outdoor unit 70 is not operated.

한편, 난방 작동시에는 표준 온도 조건, 즉 상기 냉난방 겸용 실외기(50)의 난방 용량으로 난방 부하를 대응할 수 있는 경우에는, 냉방 작동시와 마찬가지로 상기 전자팽창밸브(78)가 밀폐되고, 상기 난방 전용 실외기(70)는 작동되지 않는다. On the other hand, when the heating load can be coped with standard temperature conditions during the heating operation, that is, the heating capacity of the air-conditioning combined outdoor unit 50, the electromagnetic expansion valve 78 is sealed as in the cooling operation, and the heating dedicated. The outdoor unit 70 is not operated.

반면에, 표준 온도 조건보다 온도가 낮은 경우, 즉 상기 냉난방 겸용 실외기(50)의 난방 용량보다 추가용량이 필요한 경우, 상기 전자팽창밸브(78)는 개방되어, 상기 난방 전용 실외기(70)로 냉매가 흡입되게 된다. On the other hand, when the temperature is lower than the standard temperature condition, that is, when the additional capacity is required than the heating capacity of the combined outdoor heating and cooling unit 50, the electromagnetic expansion valve 78 is opened, the refrigerant to the heating dedicated outdoor unit 70 Will be inhaled.

상기 난방 전용 실외기(70)로 흡입된 냉매는 상기 전자팽창밸브(78), 난방 전용 실외 열교환기(72), 어큐뮬레이터(74), 난방 전용 압축기(71)를 차례로 통과한 뒤, 상기 냉난방 겸용 실내기(60)측으로 순환되게 된다. The refrigerant sucked into the heating-only outdoor unit 70 passes through the electromagnetic expansion valve 78, the heating-only outdoor heat exchanger 72, the accumulator 74, and the heating-only compressor 71 in order, and then the cooling / cooling indoor unit. It is circulated to (60) side.

따라서, 한냉지역과 같이 난방용량이 모자란 곳에서 상기 난방 전용 실외기(70)만을 추가함으로써, 난방 부하에 대응할 수 있게 된다. Therefore, by adding only the outdoor unit 70 exclusively for heating in a place where heating capacity is insufficient, such as a cold region, it is possible to cope with a heating load.

여기서, 상기 난방 전용 실외기(70)에는 각종 센서나 사방밸브 등의 부품이 삭제되어 구조가 간단하고, 설치면적이 작기 때문에 설치 및 관리 비용이 절감될 수 있다. In this case, the heating-only outdoor unit 70 can remove various sensors, four-way valves, and the like, so that the structure is simple and the installation area is small, thereby reducing installation and management costs.

도 3은 본 발명의 제 2실시예에 따른 히트펌프식 공기조화기의 냉방작동상태가 도시된 구성도이다.3 is a configuration diagram showing a cooling operation state of the heat pump type air conditioner according to the second embodiment of the present invention.

본 발명의 제 2실시예에 따른 히트펌프식 공기조화기는 압축기(51)(52)와, 사방밸브(53)와, 실외 열교환기(54)가 포함된 적어도 하나 이상의 냉난방 겸용 실 외기(50)와, 상기 냉난방 겸용 실외기(50)와 냉매배관으로 연결된 적어도 하나 이상의 냉난방 겸용 실내기(60)와, 상기 냉난방 겸용 실외기(50)와 별도로 설치되어, 냉방 작동시 상기 냉난방 겸용 실외기(50)의 냉방 용량보다 추가용량이 필요한 경우 추가용량을 공급할 수 있도록 형성된 냉방 전용 실외기(80)를 포함하여 구성된다. The heat pump type air conditioner according to the second embodiment of the present invention includes at least one air-conditioning combined outdoor unit 50 including a compressor 51, 52, a four-way valve 53, and an outdoor heat exchanger 54. And, the air-conditioning combined outdoor unit 50 and at least one air-conditioning combined indoor unit 60 connected to the refrigerant pipe and the air-conditioning combined outdoor unit 50 is installed separately, the cooling capacity of the air-conditioning combined outdoor unit 50 during the cooling operation If the additional capacity is required is configured to include a cooling only outdoor unit 80 formed to supply the additional capacity.

여기서, 상기 냉방 전용 실외기(80)는 냉방 작동시에만 사용되는 점을 제외하고는 상기 냉난방 겸용 실외기(50)와, 냉난방 겸용 실내기(60)의 내부 구성 및 작용은 본 발명의 제 1실시예와 동일하므로 동일 부호를 사용하고 그에 대한 상세한 설명은 생략한다. Here, except that the cooling only outdoor unit 80 is used only during the cooling operation, the internal structure and operation of the combined outdoor air conditioning unit 50 and the air conditioning indoor unit 60 are different from those of the first embodiment of the present invention. Since the same reference numerals are used, detailed descriptions thereof will be omitted.

상기 냉방 전용 실외기(80)에는 난방 전용 압축기(81)와, 난방 전용 실외 열교환기(82)와, 전자팽창밸브(83)와, 어큐뮬레이터(84)가 각각 설치된다.The cooling dedicated outdoor unit 80 is provided with a heating exclusive compressor 81, a dedicated heating outdoor heat exchanger 82, an electromagnetic expansion valve 83, and an accumulator 84, respectively.

상기 냉방 전용 실외기(80)로 냉매를 흡입시키는 난방 전용 흡입유로(85)는 상기 제 1냉매배관(62)과 어큐뮬레이터(84)의 흡입부사이에 연결되고, 상기 냉방 전용 실외기(80)로부터 냉매를 토출시키는 난방 전용 토출유로(86)는 상기 제 2냉매배관(63)과 난방 전용 실외 열교환기(82)사이에 연결된다. A heating exclusive suction flow path 85 for sucking the refrigerant to the cooling exclusive outdoor unit 80 is connected between the first refrigerant pipe 62 and the suction part of the accumulator 84 and receives the refrigerant from the cooling exclusive outdoor unit 80. The discharge only flow passage 86 for discharging is connected between the second refrigerant pipe 63 and the dedicated outdoor heat exchanger 82.

상기와 같이 구성되는 본 발명에 따른 히트펌프식 공기조화기는 냉난방 겸용 실외기와 별도로 설치되어, 난방 작동시 상기 냉난방 겸용 실외기의 난방 용량보다 추가용량이 필요한 경우에만 추가용량을 공급하도록 난방 전용 실외기가 설치됨으 로써, 한냉지역과 같은 추운지역에 대응하기 위해 필요이상의 대용량 실외기를 설치할 필요가 없기 때문에 설치 및 관리비용을 절감할 수 있는 효과가 있다. Heat pump type air conditioner according to the present invention configured as described above is installed separately from the combined outdoor unit for heating and cooling, the heating only outdoor unit is installed to supply the additional capacity only when the additional capacity is required than the heating capacity of the combined outdoor heating and cooling unit during heating operation As a result, it is not necessary to install a large capacity outdoor unit more than necessary to cope with a cold area such as a cold area, thereby reducing the installation and management costs.

또한, 상기 난방 전용 실외기는 난방 전용 압축기와, 난방 전용 실외난방 전용 실외와, 밸브수단으로 구성되기 때문에, 구조가 간단하여 설치면적이 감소될 뿐만 아니라 가격도 저렴한 이점이 있다. In addition, since the heating-only outdoor unit is composed of a heating-only compressor, a heating-only outdoor heating-only outdoor, and a valve means, the structure is simple, the installation area is reduced, and the price is low.

또한, 상기 난방 전용 실외기는 한냉지역뿐만 아니라 기존의 난방 능력으로는 부족한 곳에 추가로 설치함으로써, 난방 부하에 대응이 용이한 이점이 있다. In addition, the heating-only outdoor unit is installed in addition to the cold cooling area as well as the existing heating capacity is insufficient, there is an advantage that it is easy to cope with the heating load.

Claims (6)

삭제delete 적어도 하나 이상의 냉난방 겸용 실내기와;At least one indoor heating and cooling unit; 상기 냉난방 겸용 실내기의 용량에 대응되는 용량으로 구비되어, 상기 냉난방 겸용 실내기와 연결된 적어도 하나 이상의 냉난방 겸용 실외기와;At least one outdoor air conditioning combined outdoor unit having a capacity corresponding to the capacity of the air conditioning combined indoor unit and connected to the air conditioning combined indoor unit; 상기 냉난방 겸용 실외기 및 냉난방 겸용 실내기가 난방을 위해 작동될 때, 상기 냉난방 겸용 실내기 및 냉난방 겸용 실외기와 선택적으로 연결되는 난방 전용 실외기를 포함하고,When the air-conditioning combined outdoor unit and the air-conditioning combined indoor unit is operated for heating, a heating-only outdoor unit selectively connected to the air-conditioning combined indoor unit and the air-conditioning combined outdoor unit, 상기 난방 전용 실외기는 난방 전용 압축기와, 난방 전용 실외 열교환기와, 상기 냉난방 겸용 실내기로부터 냉매가 유입되는 유로를 개폐시키는 밸브수단을 포함하여 구성된 것을 특징으로 하는 히트펌프식 공기조화기. And the heating-only outdoor unit includes a heating-only compressor, a heating-only outdoor heat exchanger, and valve means for opening and closing a flow path through which refrigerant is introduced from the combined air-conditioning and indoor unit. 제 2 항에 있어서,The method of claim 2, 상기 밸브수단은 난방 작동시 개방되어 상기 냉난방 겸용 실내기로부터 유입되는 냉매를 팽창시키고, 냉방 작동시는 밀폐되어 상기 냉난방 겸용 실내기로부터 냉매가 유입되지 않도록 차단하는 전자팽창밸브인 것을 특징으로 하는 히트펌프식 공기조화기. The valve means is a heat pump type that is opened during the heating operation to expand the refrigerant flowing from the combined air-conditioning and indoor unit, the air expansion valve is sealed during the cooling operation to block the refrigerant from entering the combined air-conditioning and indoor unit Air conditioner. 제 3 항에 있어서,The method of claim 3, wherein 상기 난방 전용 압축기의 토출유로에는 냉방 작동시 상기 난방 전용 압축기로 냉매가 역류되는 것을 차단하는 체크밸브가 설치된 것을 특징으로 하는 히트펌프식 공기조화기. And a check valve is installed in the discharge passage of the heating compressor to block the refrigerant from flowing back to the heating compressor during the cooling operation. 제 4 항에 있어서,The method of claim 4, wherein 상기 난방 전용 압축기의 흡입 유로에는 흡입 냉매 중 액냉매가 축적되도록 어큐뮬레이터가 설치된 것을 특징으로 하는 히트펌프식 공기조화기. And an accumulator is installed in the suction flow path of the heating compressor to accumulate the liquid refrigerant in the suction refrigerant. 삭제delete
KR1020040113573A 2004-12-28 2004-12-28 Heat pump type air conditioner KR100688170B1 (en)

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EP05258018A EP1686332A3 (en) 2004-12-28 2005-12-22 Reversible cycle air conditioner
US11/316,988 US20060156751A1 (en) 2004-12-28 2005-12-27 Heat pump air conditioner
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