KR100537336B1 - structure of discharging oil in compressor for outdoor-unit - Google Patents
structure of discharging oil in compressor for outdoor-unit Download PDFInfo
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- KR100537336B1 KR100537336B1 KR10-2003-0061220A KR20030061220A KR100537336B1 KR 100537336 B1 KR100537336 B1 KR 100537336B1 KR 20030061220 A KR20030061220 A KR 20030061220A KR 100537336 B1 KR100537336 B1 KR 100537336B1
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- refrigerant
- compressors
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
본 발명은 다수개 구비되는 실내기와 각각 연결되는 하나의 실외기의 압축기 내부에 윤활을 위한 오일의 양을 적절히 분배하여 장기간 작동되지 않은 압축기의 구동시 윤활작용이 행해지지 않음에 따른 파손이나 마모를 없애기 위한 에어컨 실외기의 오일 분배구조에 관한 것이다.The present invention properly distributes the amount of oil for lubrication in the compressor of one outdoor unit, each connected to a plurality of indoor units provided to eliminate the damage or wear caused by the lubrication is not performed when the compressor is not operated for a long time It relates to an oil distribution structure of an outdoor unit for an air conditioner.
본 발명에 따른 에어컨 실외기의 오일 분배구조는 다수 개의 압축기 각각에 연결되어 압축된 냉매를 냉동 사이클을 이루도록 안내하는 토출관과, 냉매를 압축기 각각으로 안내하는 흡입관과, 상기 흡입관과 연결되어 압축기 각각에서 냉매와 함께 토출된 오일을 분리시키는 오일분리기로 이루어진 에어컨의 실외기에 있어서, 압축기와 흡입관 사이에는 압축기 각각의 내부에 오일을 일정량 유지하도록 분배하기 위한 분배수단이 더 구비되는 것을 특징으로 한다.An oil distribution structure of an outdoor unit of an air conditioner according to the present invention includes a discharge pipe connected to each of a plurality of compressors for guiding compressed refrigerant to form a refrigeration cycle, a suction pipe for guiding refrigerant to each of the compressors, and connected to the suction pipes in each compressor. In the outdoor unit of the air conditioner consisting of an oil separator for separating the oil discharged with the refrigerant, characterized in that the distribution means for distributing to maintain a certain amount of oil in each of the compressor between the compressor and the suction pipe.
Description
본 발명은 에어컨 실외기의 오일 분배구조에 관한 것으로, 보다 상세하게는 다수개 구비되는 실내기와 각각 연결되는 하나의 실외기의 압축기 내부에 윤활을 위한 오일의 양을 적절히 분배하여 장기간 작동되지 않은 압축기의 구동시 윤활작용이 행해지지 않음에 따른 파손이나 마모를 없애기 위한 에어컨 실외기의 오일 분배구조에 관한 것이다.The present invention relates to an oil distribution structure of an outdoor unit of an air conditioner, and more particularly, to properly distribute an amount of oil for lubrication in a compressor of one outdoor unit connected to a plurality of indoor units, respectively, to drive a compressor that has not been operated for a long time. The present invention relates to an oil distribution structure of an outdoor unit of an air conditioner for removing damage or abrasion due to no lubrication.
도 1 및 도 2에 도시된 바와 같이, 종래의 에어컨은 하나의 실외기(50)에 제 1실내기(70)와 제 2실내기(80)가 각각 연결 설치된다.As shown in FIG. 1 and FIG. 2, the conventional air conditioner is provided with a first indoor unit 70 and a second indoor unit 80 connected to one outdoor unit 50, respectively.
상기 실외기(50)는 냉매를 고온,고압의 기체냉매로 압축시키는 제 1압축기(52) 및 제 2압축기(53)와, 상기 제 1,2압축기(52,53)와 연결되도록 설치되어 냉매를 실외 공기와 열교환시킴으로 중온고압의 액체냉매로 응축시키는 실외 열교환기(54)와, 상기 실외 열교환기(54) 측에 설치되어 실외 열교환기(54) 측으로 실외 공기를 송풍시키는 실외팬(54a)으로 구성된다.The outdoor unit 50 is installed to be connected to the first compressor 52 and the second compressor 53 for compressing the refrigerant into a high-temperature, high-pressure gas refrigerant, and the first and second compressors 52 and 53 to cool the refrigerant. An outdoor heat exchanger 54 condensing into a liquid refrigerant of medium temperature and high pressure by heat exchange with outdoor air, and an outdoor fan 54a installed at the outdoor heat exchanger 54 side to blow outdoor air to the outdoor heat exchanger 54 side. It is composed.
그리고, 상기 실외기(50)는 제 1,2압축기(52,53)의 선단 측에 설치되어 제 1,2압축기(52,53)로 유입되는 냉매 중 포함된 오일을 분리시키는 오일분리기(56)가 더 포함된다.The outdoor unit 50 is installed at the front end side of the first and second compressors 52 and 53 to separate the oil contained in the refrigerant flowing into the first and second compressors 52 and 53. Is further included.
또한, 상기 오일분리기(56)를 통과한 냉매 중에서 제 1,2압축기(52,53) 운전 용량에 따라 발생되는 잉여 냉매를 저장할 수 있는 한 쌍의 어큐뮬레이터(도시하지 않음)가 더 포함된다.In addition, a pair of accumulators (not shown) may be further included in the refrigerant passing through the oil separator 56 to store the excess refrigerant generated according to the operation capacity of the first and second compressors 52 and 53.
특히, 상기 실외기(50)는 제 1,2압축기(52,53)에 구비되어 압축된 냉매를 다음 사이클로 안내하는 토출관(52a,53a)과, 상기 토출관(52a,53a)의 냉매를 하나로 합유시켜 냉동 사이클 중 응축기, 팽창기, 증발기로 안내하는 연결관(51)과, 상기 연결관(51)의 끝단부에 분지되어 냉매를 제 1,2압축기(52,53)로 안내하는 흡입관(55a,55b)과, 연결관(51)과 흡입관(55a,55b) 사이에 구비되어 제 1,2압축기(52,53)에서 냉매와 같이 토출된 오일을 분리시키는 오일분리기(56)로 구성된다.In particular, the outdoor unit 50 includes discharge pipes 52a and 53a provided in the first and second compressors 52 and 53 to guide the compressed refrigerant to the next cycle, and the refrigerant in the discharge pipes 52a and 53a into one. A connecting tube 51 which is combined to guide the condenser, the expander, and the evaporator during the refrigerating cycle, and a suction pipe 55a branched at the end of the connecting tube 51 to guide the refrigerant to the first and second compressors 52 and 53. 55b and an oil separator 56 provided between the connection pipe 51 and the suction pipes 55a and 55b to separate oil discharged from the first and second compressors 52 and 53, such as refrigerant.
또한, 상기 제 1,2실내기(70,80)는 실외 열교환기(54)와 각각 연결되도록 설치되어 냉매를 실내공기와 열교환시킴으로 냉기를 생성함과 아울러 저온, 저압의 기체냉매로 증발시키는 제 1,2실내 열교환기(72,82)와, 상기 제 1,2실내 열교환기(72,82) 측에 각각 설치되어 제 1,2실내 열교환기(72,82) 측으로 각각 실내 공기를 송풍시키는 제 1,2실내팬(72a,82a)으로 구성된다.In addition, the first and second indoor chambers 70 and 80 are installed to be connected to the outdoor heat exchanger 54, respectively, to generate cool air by exchanging refrigerant with indoor air and to evaporate the gas refrigerant at low temperature and low pressure. 2nd chamber heat exchanger (72, 82) and the first and second chamber heat exchanger (72, 82) respectively installed in the room to blow the indoor air to the first and second chamber heat exchanger (72, 82) side, respectively It consists of 1, 2 indoor fans 72a and 82a.
한편, 상기 실외 열교환기(54)와 제 1실내 열교환기(72) 사이에는 냉매의 유량을 조절함과 아울러 냉매를 감압시키는 제 1전자 팽창밸브(62)가 설치되고, 실외 열교환기(54)와 제 2실내 열교환기(82) 사이에는 제 2전자 팽창밸브(67)가 설치되어 선택적으로 개폐된다.On the other hand, between the outdoor heat exchanger 54 and the first indoor heat exchanger 72 is provided with a first electronic expansion valve 62 to regulate the flow rate of the refrigerant and to reduce the refrigerant, the outdoor heat exchanger 54 And a second electromagnetic expansion valve 67 is installed between the second chamber heat exchanger 82 and selectively opened and closed.
이때, 상기 제 1실내 열교환기(72)만 작동되는 경우, 냉매가 제 1전자 팽창밸브(62)를 통과하여 제 1실내 열교환기(72) 측으로 유입될 수 있도록 제 1전자 팽창밸브(62)가 열리고, 제 2전자 팽창밸브(67)는 닫히게 된다.In this case, when only the first chamber heat exchanger 72 is operated, the first electromagnetic expansion valve 62 may be introduced into the first chamber heat exchanger 72 through the first electromagnetic expansion valve 62. Is opened, and the second electromagnetic expansion valve 67 is closed.
그리고, 상기 제 2실내 열교환기(82)만 작동되는 경우, 냉매가 제 2실내 열교환기(82) 측으로 유입될 수 있도록 제 1전자 팽창밸브(62)가 닫히고, 제 2전자 팽창밸브(67)는 열리게 된다.When only the second chamber heat exchanger 82 is operated, the first electromagnetic expansion valve 62 is closed to allow the refrigerant to flow into the second chamber heat exchanger 82, and the second electromagnetic expansion valve 67 is closed. Is opened.
그러나, 상기 오일분리기에서 분리된 오일은 제 1,2압축기에 제공되어 윤활작용을 하게 되는데, 제 1,2실내기 중 어느 하나만 장시간 작동할 경우, 제 1,2압축기 중 어느 하나의 압축기에만 오일이 계속적으로 공급되면서 다른 압축기에는 오일이 공급되지 않기 때문에, 장시간 작동되지 않은 압축기를 작동시 오일의 고갈로 그 압축기가 마모되거나 파손되는 문제점이 있었다.However, the oil separated from the oil separator is provided to the first and second compressors to lubricate. When only one of the first and second chambers is operated for a long time, the oil is applied only to one of the compressors of the first and second compressors. Since the oil is not supplied to other compressors while being continuously supplied, there is a problem in that the compressor is worn out or damaged due to the exhaustion of oil when the compressor is not operated for a long time.
본 발명은 상기한 종래 기술의 문제점을 해결하고자 제안된 것으로서, 오일분배기에서 걸러진 오일이 다수 개의 압축기 중 어느 하나의 압축기에만 유입될 경우 압력차에 의해 다른 압축기로 분배하도록 이웃한 압축기간에 상호 교차되도록 모세관을 형성하여 오일부족으로 인한 압축기의 파손이나 마모를 방지하고자 한 에어컨 실외기의 오일 분배구조를 제공함을 그 목적으로 한다. The present invention has been proposed to solve the above problems of the prior art, and when the oil filtered in the oil distributor flows into only one of the plurality of compressors, they cross each other between neighboring compressors so as to distribute to other compressors by a pressure difference. It is an object of the present invention to provide an oil distribution structure of an outdoor unit of an air conditioner to form a capillary tube to prevent breakage or wear of a compressor due to lack of oil.
상기한 목적을 달성하기 위한 본 발명에 따른 에어컨 실외기의 오일 분배구조는 다수 개의 압축기 각각에 연결되어 압축된 냉매를 냉동 사이클을 이루도록 안내하는 토출관과, 냉매를 압축기 각각으로 안내하는 흡입관과, 상기 흡입관과 연결되어 압축기 각각에서 냉매와 함께 토출된 오일을 분리시키는 오일분리기로 이루어진 에어컨의 실외기에 있어서, 압축기와 흡입관 사이에는 압축기 각각의 내부에 오일을 압력차에 의해 일정량 유지하도록 분배하기 위한 분배수단이 더 구비되는 것을 특징으로 한다.The oil distribution structure of the air conditioner outdoor unit according to the present invention for achieving the above object is connected to each of the plurality of compressors and discharge pipe for guiding the compressed refrigerant to form a refrigeration cycle, suction pipe for guiding the refrigerant to each of the compressor, and In the outdoor unit of the air conditioner consisting of an oil separator connected to the suction pipe to separate the oil discharged with the refrigerant in each of the compressor, the distribution means for distributing a predetermined amount of oil in the respective compressors between the compressor and the suction pipe by the pressure difference It is characterized in that it is further provided.
그리고, 상기 분배수단은 일단을 압축기 각각의 외주연에서 흡입관보다 높은 위치에 연결하며, 타단을 이웃한 압축기와 오일분리기를 연결하는 흡입관과 접속하는 다수 개의 모세관으로 한다.The distributing means connects one end to a position higher than the suction pipe at each outer periphery of the compressor, and the other end comprises a plurality of capillaries connected to the suction pipe connecting the adjacent compressor and the oil separator.
또한, 상기 모세관에는 압축기 각각의 내부에 수용된 오일의 분배를 단속하기 위하여 유량조절밸브를 더 구비될 수 있다.In addition, the capillary tube may be further provided with a flow control valve to control the distribution of oil contained in each of the compressor.
이하, 본 발명의 구성을 첨부한 도면을 참조하여 더욱 상세히 설명한다. Hereinafter, with reference to the accompanying drawings, the configuration of the present invention will be described in more detail.
도 3은 본 발명의 일실시예에 따른 에어컨의 분배수단을 구비한 설치상태를 나타낸 개략도이고, 도 4는 본 발명의 다른 실시예에 따른 에어컨의 분배수단을 구비한 설치상태를 나타낸 개략도이다.Figure 3 is a schematic diagram showing an installation state with a distribution means of the air conditioner according to an embodiment of the present invention, Figure 4 is a schematic diagram showing an installation state with a distribution means of the air conditioner according to another embodiment of the present invention.
종래의 기술과 동일 또는 유사한 구성요소에 대해서는 동일한 명칭을 부여하고, 동일 부호를 부여한다.The same or similar components as in the prior art are given the same names and the same reference numerals.
도 3 및 도 4에 도시된 바와 같이, 본 발명에서 실외기(50)는 제 1압축기(52) 및 제 2압축기(53)와, 실외 열교환기(54)와, 실외팬(54a)으로 구성된다.3 and 4, in the present invention, the outdoor unit 50 includes a first compressor 52 and a second compressor 53, an outdoor heat exchanger 54, and an outdoor fan 54a. .
특히, 상기 실외기(50)는 제 1,2압축기(52,53)에 구비되어 압축된 냉매를 다음 사이클로 안내하는 토출관(52a,53a)과, 상기 토출관(52a,53a)의 냉매를 하나로 합유시켜 냉동 사이클 중 응축기, 팽창기, 증발기로 안내하는 연결관(51)과, 상기 연결관(51)의 끝단부에 분지되어 냉매를 제 1,2압축기(52,53)로 안내하는 흡입관(55a,55b)과, 연결관(51)과 흡입관(55a,55b) 사이에 구비되어 제 1,2압축기(52,53)에서 냉매와 같이 토출된 오일을 분리시키는 오일분리기(56)로 구성된다.In particular, the outdoor unit 50 includes discharge pipes 52a and 53a provided in the first and second compressors 52 and 53 to guide the compressed refrigerant to the next cycle, and the refrigerant in the discharge pipes 52a and 53a into one. A connecting tube 51 which is combined to guide the condenser, the expander, and the evaporator during the refrigerating cycle, and a suction pipe 55a branched at the end of the connecting tube 51 to guide the refrigerant to the first and second compressors 52 and 53. 55b and an oil separator 56 provided between the connection pipe 51 and the suction pipes 55a and 55b to separate oil discharged from the first and second compressors 52 and 53, such as refrigerant.
또한, 상기 제 1,2실내기(70,80)는 실외 열교환기(54)와 각각 연결되는 제 1,2실내 열교환기(72,82)와, 상기 제 1,2실내 열교환기(72,82) 측으로 각각 실내 공기를 송풍시키는 제 1,2실내팬(72a,82a)으로 구성된다.In addition, the first and second indoor chambers 70 and 80 may include first and second indoor heat exchangers 72 and 82 connected to the outdoor heat exchanger 54, and the first and second indoor heat exchangers 72 and 82. And first and second indoor fans 72a and 82a for blowing indoor air to the side.
한편, 상기 실외 열교환기(54)와 제 1실내 열교환기(72) 사이에는 제 1전자 팽창밸브(62)가 설치되고, 실외 열교환기(54)와 제 2실내 열교환기(82) 사이에는 제 2전자 팽창밸브(67)가 설치되어 선택적으로 개폐된다.Meanwhile, a first electromagnetic expansion valve 62 is installed between the outdoor heat exchanger 54 and the first indoor heat exchanger 72, and between the outdoor heat exchanger 54 and the second indoor heat exchanger 82. Two-electron expansion valve 67 is installed and selectively opened and closed.
또한, 상기 제 1압축기(52)와 제 2압축기(53) 및 각각에 연결된 흡입관(55a,55b) 사이에는 분배수단(100)이 더 형성된다.In addition, a distribution means 100 is further formed between the first compressor 52 and the second compressor 53 and the suction pipes 55a and 55b connected to the respective compressors.
상기 분배수단(100)은 제 2압축기(53)와 오일분리기(56) 사이에 개재된 흡입관(55b)과 제 1압축기(52)를 연결하는 제 1모세관(110)과, 제 1압축기(52)와 오일분리기(56) 사이에 개재된 흡입관(55b)과 제 2압축기(53)를 연결하는 제 2모세관(120)으로 이루어진다. The distribution means 100 may include a first capillary tube 110 connecting the suction tube 55b and the first compressor 52 interposed between the second compressor 53 and the oil separator 56, and the first compressor 52. ) And a second capillary tube 120 connecting the suction tube 55b interposed between the oil separator 56 and the second compressor 53.
이때, 상기 제 1,2모세관(110,120)은 제 1,2압축기(52,53)의 외주연에서 흡입관(55a,55b)의 연결위치보다 높은 위치에 설치된다.In this case, the first and second capillary tubes 110 and 120 are installed at positions higher than the connection positions of the suction pipes 55a and 55b at the outer circumferences of the first and second compressors 52 and 53.
그래서, 상기 제 1,2압축기(52,53) 중 어느 하나가 장기간 작동되면, 오일분리기(56)에서 분리된 오일이 그 압축기로만 유입되는데, 일정 이상 유입되면 제 1,2모세관(110,120) 중 어느 하나를 통해 다른 압축기로 오일을 분배한다.Thus, when any one of the first and second compressors 52 and 53 is operated for a long time, the oil separated from the oil separator 56 flows only into the compressor, and when more than a certain amount of the first and second compressors 52 and 53 are introduced, Distribute oil to either compressor through one of them.
또한, 상기 제 1,2모세관(110)에는 제 1유량조절밸브(210)를 설치하고, 제 2모세관(120)에는 제 2유량조절밸브(220)를 설치한다.In addition, the first and second capillary tubes 110 are provided with a first flow rate control valve 210, and the second capillary tube 120 is provided with a second flow rate control valve 220.
상기 제 1,2유량조절밸브(210,220)는 각각 제 1,2압축기(52,53)에 인접되게 구비되어, 오일이 경우에 따라 제 1,2모세관(110,120)을 통해 제 1,2압축기(52,53)에 일정량 분배되거나 또는 분배될 필요가 없을 경우 단속되게 된다.The first and second flow control valves 210 and 220 are provided to be adjacent to the first and second compressors 52 and 53, respectively, and the oil may be the first and second compressors through the first and second capillaries 110 and 120 in some cases. 52, 53, or if it does not need to be dispensed.
상기 제 1,2유량조절밸브(210,220)는 제어부에 의해 제어된다. The first and second flow control valves 210 and 220 are controlled by a controller.
상기와 같이 구성된 본 발명의 작동을 살펴보면 다음과 같다.Looking at the operation of the present invention configured as described above are as follows.
첫째, 사용자의 조작에 의해 제 1실내기(70)만 작동될 경우, 냉방 부하에 따라 제 1압축기(52)가 작동되고, 제 1전자 팽창밸브(62)가 열리는 동시에 제 2전자 팽창밸브(67)가 닫히게 되며, 실외팬(54a) 및 제 1실내팬(72a)이 작동된다.First, when only the first indoor unit 70 is operated by the user's operation, the first compressor 52 is operated according to the cooling load, the first electromagnetic expansion valve 62 is opened, and the second electromagnetic expansion valve 67 is opened. ) Is closed, and the outdoor fan 54a and the first indoor fan 72a are operated.
따라서, 냉매는 작동되는 제 1압축기(52)를 통과하면서 고온 고압의 기체냉매로 압축되고, 제 1압축기(52)를 통과한 냉매는 실외 열교환기(54)를 통과하면서 실외팬(54a)에 의해 송풍되는 실외 공기와 열교환되어 중온 고압의 액체냉매로 응축되며, 실외 열교환기(54)를 통과한 냉매는 제 1전자 팽창밸브(62)를 통과하면서 저온 저압의 냉매로 감압된다.Therefore, the refrigerant is compressed into a gas refrigerant of high temperature and high pressure while passing through the first compressor 52 that is operated, and the refrigerant passing through the first compressor 52 passes through the outdoor heat exchanger 54 to the outdoor fan 54a. Heat exchanged with the outdoor air blown by the air is condensed into a liquid refrigerant of medium temperature and high pressure, the refrigerant passing through the outdoor heat exchanger 54 is reduced to a refrigerant of low temperature and low pressure while passing through the first electromagnetic expansion valve (62).
그리고, 상기 제 1전자 팽창밸브(62)를 통과한 냉매는 제 1실내 열교환기(72)를 통과하면서 제 1실내팬(72a)에 의해 송풍되는 실내 공기와 열교환되어 저온 저압의 기체냉매로 증발됨과 아울러 제 1실내기(70)가 설치된 공간에 냉기를 생성시킨다.In addition, the refrigerant passing through the first electromagnetic expansion valve 62 exchanges heat with indoor air blown by the first indoor fan 72a while passing through the first indoor heat exchanger 72 to evaporate into a gas refrigerant having a low temperature and low pressure. In addition, the cold air is generated in the space where the first indoor unit 70 is installed.
또한, 상기 제 1실내 열교환기(72)를 통과한 냉매는 오일분리기(56)를 지나면서 오일이 걸러진 다음 작동 중인 제 1압축기(52) 측으로 유입된다.In addition, the refrigerant passing through the first indoor heat exchanger (72) passes through the oil separator (56), and the oil is filtered and then introduced to the first compressor (52) side in operation.
이때, 상기한 오일은 계속적으로 제 1압축기(52)의 내부로 유입되면서 일정 위치에 연결된 제 1모세관(110)을 통해 배출되면서 흡입관(55b)으로 유동된다.At this time, the oil continuously flows into the suction pipe 55b while being introduced into the first compressor 52 and discharged through the first capillary tube 110 connected to a predetermined position.
그리고, 상기 흡입관(55b)으로 유입된 오일은 제 2압축기(53)의 내부로 유입되어 배분된다. In addition, the oil introduced into the suction pipe 55b flows into the second compressor 53 and is distributed.
이때, 상기 제 1압축기(52)에 인접된 제 1모세관(110) 상에는 제 1유량조절밸브(210)가 형성되어 개방되면서 오일이 분배되도록 한다.At this time, the first flow rate control valve 210 is formed on the first capillary tube 110 adjacent to the first compressor 52 to open and distribute the oil.
그리고 나서, 상기 제 1유량조절밸브(210)는 일정 시간 경과 후 개폐되면서 더 이상의 오일 배분이 행해지는 것을 단속하여 구동되는 제 1압축기(52)에 충분한 오일이 공급되도록 한다.Then, the first flow rate control valve 210 is opened and closed after a certain period of time so that sufficient oil is supplied to the first compressor 52 which is driven by intermittently performing further oil distribution.
둘째, 사용자에 의해 상기 제2실내기(80)만 작동되는 경우, 상기 2압축기(53)가 작동되고, 제 1전자 팽창밸브(62)가 닫히는 동시에 제 2전자 팽창밸브(67)가 열리게 되며, 실외팬(54a) 및 제 2실내팬(82a)이 작동된다.Second, when only the second indoor unit 80 is operated by a user, the second compressor 53 is operated, the first electromagnetic expansion valve 62 is closed, and the second electromagnetic expansion valve 67 is opened. The outdoor fan 54a and the second indoor fan 82a are operated.
그리고, 냉매의 흐름 및 오일의 흐름은 상술한 바의 반대 방향으로, 오일은 제 2모세관(120)을 통해 정지 중인 제 1압축기(52)로 유입된다.In addition, the flow of the refrigerant and the flow of the oil are in the opposite directions as described above, and the oil flows into the first compressor 52 stationary through the second capillary tube 120.
또한, 제 2모세관(120) 상에 설치된 제 2유량조절밸브(220)는 단속되면서 제 2압축기(53)로부터 배분되는 오일의 양을 조절한다.In addition, the second flow rate control valve 220 installed on the second capillary tube 120 controls the amount of oil distributed from the second compressor 53 while being intermittent.
셋째, 사용자에 의해 제 1,2실내기(70,80)가 모두 작동되는 경우, 상기 제 1,2압축기(52,53)가 모두 작동되고, 제 1,2전자 팽창밸브(62,67)가 동시에 열리게 되며, 실외팬(54a) 및 제 1,2실내팬(72a,82a)이 작동된다.Third, when the first and second indoor chambers 70 and 80 are operated by the user, the first and second compressors 52 and 53 are operated and the first and second electronic expansion valves 62 and 67 are operated. At the same time, the outdoor fan 54a and the first and second indoor fans 72a and 82a are operated.
따라서, 냉매는 제 1,2압축기(52,53)를 통과하면서 고온 고압의 기체냉매로 압축되고, 제 1,2압축기(52,53)를 통과한 냉매는 합쳐져 실외 열교환기(54)를 통과하면서 실외팬(54a)에 의해 송풍되는 실외 공기와 열교환되어 중온 고압의 액체냉매로 응축되며, 실외 열교환기(54)를 통과한 냉매는 나뉘어져 각각 제 1,2전자 팽창밸브(62,67)를 통과 후 제 1,2실내 열교환기(72,82)에서 저온 저압의 냉매로 감압된다.Accordingly, the refrigerant is compressed into a gas refrigerant having a high temperature and high pressure while passing through the first and second compressors 52 and 53, and the refrigerant passing through the first and second compressors 52 and 53 are combined to pass through the outdoor heat exchanger 54. While condensed with the outdoor air blown by the outdoor fan (54a) and condensed into a liquid refrigerant of medium temperature and high pressure, the refrigerant passing through the outdoor heat exchanger (54) is divided into the first and second electronic expansion valves (62, 67), respectively. After the passage, the first and second chamber heat exchangers (72, 82) are depressurized to a low temperature low pressure refrigerant.
그리고, 상기 제 1유량조절밸브(210)와 제 2유량조절밸브(220)는 닫히게 되어 오일의 배분을 행하지 않을 수도 있고, 개방되어 오일을 배분할 수도 있다.In addition, the first flow rate control valve 210 and the second flow rate control valve 220 may be closed so as not to distribute oil, or may be opened to distribute oil.
상기한 바와 같이 본 발명에 따른 에어컨 실외기의 오일 분배구조에 의하면, 다수 개의 압축기 중 어느 하나만 장기간 작동될 때, 작동 중인 압축기에 지속적으로 공급되는 오일을 압력차를 이용한 모세관을 통해 정지 중인 압축기에 일부 배분함으로써 정지 중인 압축기의 작동 시 윤활작용을 하도록 함으로써 압축기의 마모나 파손을 방지할 수 있는 효과가 있다.As described above, according to the oil distribution structure of the air conditioner outdoor unit according to the present invention, when only one of the plurality of compressors is operated for a long time, the oil continuously supplied to the compressor in operation is partially transferred to the stationary compressor through a capillary tube using a pressure difference. By distributing lubrication when the compressor is stopped, the wear and damage of the compressor can be prevented.
도 1은 종래의 실외기를 도시한 사시도.1 is a perspective view showing a conventional outdoor unit.
도 2는 종래의 에어컨의 설치상태를 나타낸 개략도.2 is a schematic view showing an installation state of a conventional air conditioner.
도 3은 본 발명의 일실시예에 따른 에어컨의 분배수단을 구비한 설치상태를 나타낸 개략도.Figure 3 is a schematic diagram showing an installation state having a distribution means of the air conditioner according to an embodiment of the present invention.
도 4는 본 발명의 다른 실시예에 따른 에어컨의 분배수단을 구비한 설치상태를 나타낸 개략도.Figure 4 is a schematic diagram showing an installation state having a distribution means of the air conditioner according to another embodiment of the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
50: 실외기 52,53: 제 1,2압축기50: outdoor unit 52, 53: first and second compressor
55a,55b: 흡입관 56: 오일분리기55a, 55b: suction line 56: oil separator
62,67: 제 1,2전자 팽창밸브 70,80: 제 1,2실내기 62,67: First and second electromagnetic expansion valve 70,80: First and second room
100: 분배수단 110,120: 제 1,2모세관100: distribution means 110, 120: first and second capillary tube
210,220: 제 1,2유량조절밸브210,220: 1st and 2nd flow control valve
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| Application Number | Priority Date | Filing Date | Title |
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