KR20060074790A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
KR20060074790A
KR20060074790A KR1020040113915A KR20040113915A KR20060074790A KR 20060074790 A KR20060074790 A KR 20060074790A KR 1020040113915 A KR1020040113915 A KR 1020040113915A KR 20040113915 A KR20040113915 A KR 20040113915A KR 20060074790 A KR20060074790 A KR 20060074790A
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South Korea
Prior art keywords
oil
temperature
compressors
air conditioner
pipe
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KR1020040113915A
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Korean (ko)
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KR100596573B1 (en
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신종진
김종문
김성구
이희술
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삼성전자주식회사
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Priority to KR1020040113915A priority Critical patent/KR100596573B1/en
Priority to EP05103535A priority patent/EP1677057A3/en
Priority to CNB2005100702378A priority patent/CN100394125C/en
Publication of KR20060074790A publication Critical patent/KR20060074790A/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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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
    • F25B2400/06—Several compression cycles arranged in parallel
    • 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
    • F25B2500/16—Lubrication
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/03—Oil level
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2105—Oil temperatures
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)
  • Compressor (AREA)

Abstract

본 발명은 복수의 압축기에 수용되어 있는 오일의 적정유면을 안정적으로 유지할 수 있는 공기조화기에 관한 것으로, 병렬로 배치되어 있는 복수의 압축기와; 복수의 압축기 각각에 설치되는 오일배출관과; 오일배출관을 개폐하는 개폐밸브와; 오일배출관에 연결되는 모세관과; 모세관에 연결되는 균유관을 포함하며, 복수의 압축기 내부에는 냉매가스 및 오일의 온도를 측정하는 제1,2온도센서가 설치되고, 개폐밸브는 제1,2온도센서의 온도차에 의해 개폐되는 것을 특징으로 한다. 이에 따라, 복수의 압축기 각각의 오일 유면확보가 상대적으로 용이할 뿐 아니라 균유구조가 단순하여 조립성을 향상시킬 수 있다.The present invention relates to an air conditioner capable of stably maintaining a proper oil level of oil contained in a plurality of compressors, comprising: a plurality of compressors arranged in parallel; An oil discharge pipe installed in each of the plurality of compressors; On and off valve for opening and closing the oil discharge pipe; A capillary tube connected to the oil discharge tube; It includes a fungal oil pipe connected to the capillary tube, the first and second temperature sensors for measuring the temperature of the refrigerant gas and oil is installed in the plurality of compressors, the on-off valve is opened and closed by the temperature difference of the first and second temperature sensors It features. Accordingly, it is relatively easy to secure the oil level of each of the plurality of compressors, and the homogeneous oil structure is simple, thereby improving assembly performance.

압축기, 오일배출관, 모세관, 균유관, 온도센서, 개폐밸브Compressor, oil discharge pipe, capillary pipe, oil pipe, temperature sensor, open / close valve

Description

공기조화기 {AIR CONDITIONER}Air Conditioner {AIR CONDITIONER}

도 1은 본 발명에 따른 공기조화기의 구조를 부분적으로 도시한 구성도이고,1 is a configuration diagram partially showing the structure of an air conditioner according to the present invention,

도 2는 본 발명에 따른 공기조화기의 균유구조를 개략적으로 도시한 개략도이다.Figure 2 is a schematic diagram schematically showing the homogeneous structure of the air conditioner according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 >           <Description of Symbols for Main Parts of Drawings>

20a : 제1압축기 20b : 제2압축기         20a: first compressor 20b: second compressor

22,24 : 제1온도센서 26,28 : 제2온도센서         22,24: first temperature sensor 26,28: second temperature sensor

30a : 제1오일배출관 30b : 제2오일배출관         30a: 1st oil discharge pipe 30b: 2nd oil discharge pipe

40a : 제1모세관 40b : 제2모세관         40a: capillary 1 40b: capillary 2

50 : 균유관 90a : 제1개폐밸브         50: equal oil pipe 90a: first opening and closing valve

90b : 제2개폐밸브         90b: second open / close valve

본 발명은 공기조화기에 관한 것으로서, 보다 상세하게는 복수의 압축기에 수용되어 있는 오일의 적정유면을 안정적으로 유지할 수 있는 공기조화기에 관한 것이다.The present invention relates to an air conditioner, and more particularly, to an air conditioner capable of stably maintaining a proper oil level of oil contained in a plurality of compressors.

일반적으로, 공기조화기는 냉매가 압축기와 응축기와 팽창밸브 및 증발기로 구성되는 냉동사이클을 순환하면서 기화 또는 액화됨으로서 발생되는 흡열작용과 발열작용을 통해 냉방 또는 난방시키는 장치이다.In general, an air conditioner is a device that cools or heats through an endothermic and exothermic action generated by vaporization or liquefaction while a refrigerant circulates a refrigeration cycle composed of a compressor, a condenser, an expansion valve, and an evaporator.

최근에는 실내공간의 냉방능력 변화에 대응하여 압축기의 용량을 적절히 조절할 수 있도록 복수의 압축기가 구비되어 있는 분리형 타입의 공기조화기가 선보이고 있다. 즉, 실내외의 온도차가 크지 않아 상대적으로 작은 냉방능력이 필요할 경우에는 하나의 압축기만 구동시키고, 실내외의 온도차가 크거나 낮은 실내온도를 유지하기 위해 큰 냉방능력이 필요할 경우에는 복수의 압축기를 모두 구동시켜 공기조화기의 효율을 증대시키는 것이다.Recently, a separate type air conditioner having a plurality of compressors has been introduced to properly adjust the capacity of a compressor in response to a change in the cooling capacity of an indoor space. That is, only one compressor is driven when a relatively small cooling capacity is required because the indoor / outdoor temperature difference is not large, and a plurality of compressors are driven when a large cooling capacity is required to maintain a large or low indoor temperature. This is to increase the efficiency of the air conditioner.

특히, 복수의 압축기가 병렬로 연결된 공기조화기에서 오일의 양이 불균형을 이루게 될 경우에는 각 압축기의 운전이 안정적으로 이루어지지 않을 뿐 아니라 압축기의 손상을 초래할 수 있다. 따라서, 압축조건의 변화에 따른 각 압축기의 신뢰성을 확보하기 위하여 운전조건에 따라 변화되는 각 압축기 내의 오일량을 제어하여 오일의 적정유면을 확보하는 것이 필요하다.In particular, when an amount of oil is imbalanced in an air conditioner in which a plurality of compressors are connected in parallel, not only the operation of each compressor may be stable but may also cause damage to the compressor. Therefore, in order to secure the reliability of each compressor according to the change of the compression conditions, it is necessary to control the amount of oil in each compressor that changes according to the operating conditions to secure the appropriate oil level.

종래 복수의 압축기가 구비된 공기조화기는 한국공개특허 2003-0075197에 공지된 바와 같이, 감압기의 상·하측에 설치되어 있는 제1,2온도센서를 통해 감지되는 온도차에 기초하여 각 압축기 내의 오일량을 검출한 후, 개폐밸브를 선택적으로 온/오프시켜 오일관을 통해 오일을 공급함으로써 오일의 적정유면을 유지할 수 있도록 되어 있다. 이 외에도 공기조화기의 균유장치에 대한 기술은 다수가 개시되어 있다.Conventionally, an air conditioner equipped with a plurality of compressors, as known in Korean Patent Laid-Open Publication No. 2003-0075197, based on a temperature difference detected by first and second temperature sensors installed on the upper and lower sides of the pressure reducer, the oil in each compressor. After detecting the amount, the on / off valve is selectively turned on / off to supply oil through the oil pipe to maintain an appropriate oil level. In addition to this, a number of technologies for the oil conditioner of the air conditioner have been disclosed.

그러나 상기와 같은 구조의 공기조화기는 일단 개폐밸브를 개방한 상태에서 제1,2온도센서의 온도차를 감지하여 오일관을 통해 흐르는 것이 냉매가스라고 판단되면 개폐밸브를 폐쇄하고 오일이라고 판단되면 개페밸브의 개방상태를 유지하는 방법을 사용함으로 인해, 균유장치의 구조는 물론이고 그 제어방법이 복잡하다는 문제점이 있다.However, the air conditioner of the above structure detects the temperature difference between the first and second temperature sensors once the open / close valve is opened and determines that the refrigerant gas flows through the oil pipe, and closes the open / close valve and determines the oil to open the valve. Due to the use of the method of maintaining the open state, there is a problem that the control method as well as the structure of the milking apparatus is complicated.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로, 복수의 압축기의 오일 적정유면을 안정적으로 확보할 수 있는 공기조화기를 제공하고자 하는 데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide an air conditioner capable of stably securing the oil proper oil level of a plurality of compressors.

상기와 같은 목적을 달성하기 위하여 본 발명은, 병렬로 배치되어 있는 복수의 압축기와; 상기 복수의 압축기 각각에 설치되는 오일배출관과; 상기 오일배출관에 설치되는 개폐밸브와; 상기 오일배출관에 연결되는 모세관과; 상기 모세관에 연결되는 균유관을 포함하는 공기조화기에 있어서, 상기 복수의 압축기 내부에는 냉매가스 및 오일의 온도를 측정하는 제1,2온도센서가 설치되고, 상기 개폐밸브는 상기 제1,2온도센서의 온도차에 의해 개폐되는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a plurality of compressors arranged in parallel; An oil discharge pipe installed in each of the plurality of compressors; An on / off valve installed on the oil discharge pipe; A capillary tube connected to the oil discharge tube; In the air conditioner including a fungal oil pipe connected to the capillary, the plurality of compressors are installed in the first and second temperature sensors for measuring the temperature of the refrigerant gas and oil, the on-off valve is the first and second temperature It is characterized in that the opening and closing by the temperature difference of the sensor.

상기 제1온도센서는 냉매가스의 온도를 측정할 수 있는 위치에 설치되고, 상기 제2온도센서는 오일면의 변화에 따라 오일의 온도 및 냉매가스의 온도를 선택적으로 측정할 수 있도록 오일의 적정유면 근처에 설치되는 것이 바람직하다.The first temperature sensor is installed at a position capable of measuring the temperature of the refrigerant gas, and the second temperature sensor is appropriate for the oil so as to selectively measure the temperature of the oil and the temperature of the refrigerant gas according to the change of the oil surface. It is preferable to be installed near the oil level.

상기 개폐밸브는 오일이 적정유면 이상으로 상승되어 상기 제1,2온도센서의 온도차가 발생될 경우에는 개방되고, 오일이 적정유면 이하로 하강되어 상기 제1,2온도센서의 온도차가 발생되지 않을 경우에는 폐쇄되는 것이 바람직하다.The on-off valve is opened when the oil rises above the proper oil level to generate a temperature difference between the first and second temperature sensors, and the oil is lowered below the proper oil level so that the temperature difference between the first and second temperature sensors does not occur. In this case, it is preferable to close.

상기 균유관은 상기 오일배출관을 통해 외부로 배출된 오일을 상기 복수의 압축기 각각에 균등하게 공급할 수 있도록 설치되는 것이 바람직하다.The fungal oil pipe is preferably installed to equally supply the oil discharged to the outside through the oil discharge pipe to each of the plurality of compressors.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1 및 도 2에 도시된 바와 같이, 본 발명에 따른 공기조화기는 제1,2압축기(20a,20b)와; 제1,2압축기(20a,20b) 각각에 설치되는 제1,2오일배출관(30a,30b)과; 제1,2오일배출관(30a,30b)을 개폐하는 제1,2개폐밸브(90a,90b)와; 제1,2오일배출관(30a,30b)에 연결 설치되는 제1,2모세관(40a,40b)과; 제1,2모세관(40a,40b)에 연결 설치되는 균유관(50)을 포함하여 구성된다.1 and 2, the air conditioner according to the present invention and the first and second compressors (20a, 20b); First and second oil discharge pipes 30a and 30b installed in the first and second compressors 20a and 20b, respectively; First and second open / close valves 90a and 90b for opening and closing the first and second oil discharge pipes 30a and 30b; First and second capillary tubes 40a and 40b connected to the first and second oil discharge pipes 30a and 30b; The first and second capillary tube (40a, 40b) is configured to include a fungal oil pipe 50 is installed.

제1,2압축기(20a,20b)는 서로 다른 냉방능력을 가지고 병렬로 배치되어 있으며, 증발기(미도시)로부터 유입된 냉매를 고압으로 압축시키는 역할을 한다. 제1,2압축기(20a,20b)의 상측에는 압축된 냉매를 토출시키기 위한 토출배관(10)이 설치되어 있으며, 토출배관(10)을 통해 토출되는 냉매는 오일분리기(70)를 거쳐 응축기(80)로 공급된다.The first and second compressors 20a and 20b are arranged in parallel with different cooling capacities, and serve to compress the refrigerant introduced from the evaporator (not shown) to a high pressure. Discharge pipes 10 for discharging the compressed refrigerant are installed above the first and second compressors 20a and 20b, and the refrigerant discharged through the discharge pipes 10 passes through the oil separator 70 to condenser ( 80).

제1,2압축기(20a,20b) 각각의 내부에는 냉매가스 및 오일의 온도를 측정하는 제1온도센서(20,24) 및 제2온도센서(26,28)가 설치되어 있다. 제1온도센서(22,24)는 냉매가스의 온도를 측정할 수 있는 위치에 설치되고, 제2온도센서(26,28)는 오일면의 변화에 따라 오일의 온도 및 냉매가스의 온도를 선택적으로 측정할 수 있도 록 오일의 적정유면 근처에 설치된다.Each of the first and second compressors 20a and 20b is provided with first temperature sensors 20 and 24 and second temperature sensors 26 and 28 for measuring temperatures of refrigerant gas and oil. The first temperature sensors 22 and 24 are installed at positions where the temperature of the refrigerant gas can be measured, and the second temperature sensors 26 and 28 selectively select the temperature of the oil and the temperature of the refrigerant gas according to the change of the oil surface. It is installed near the proper oil level of the oil so that it can be measured.

제1,2압축기(20a,20b)에는 제1,2어큐뮬레이터(60a,60b)가 각각 연결 설치되어, 냉매관(12)을 통해 내부로 유입되는 액체냉매 및 기체냉매를 상호 분리할 수 있도록 되어 있다.The first and second accumulators 20a and 20b are connected to the first and second accumulators 60a and 60b, respectively, so that the liquid refrigerant and the gas refrigerant introduced into the interior through the refrigerant pipe 12 can be separated from each other. have.

오일분리기(70)는 토출배관(10) 및 냉매관(12)과 연통 설치되어, 제1,2압축기로(20a,20b)부터의 냉매 토출과정에서 함께 토출되는 오일을 분리하여 제1,2압축기(20a,20b)로 재공급한다.The oil separator 70 is installed in communication with the discharge pipe 10 and the refrigerant pipe 12 to separate the oil discharged together in the refrigerant discharge process from the first and second compressors 20a and 20b. Resupply to compressors 20a and 20b.

제1,2오일배출관(30a,30b)은 제1,2압축기(20a,20b) 각각에 수용되어 있는 오일의 적정유면 근처에 설치되어, 잉여분의 오일이 발생될 경우 이를 외부로 토출하기 위한 것이다. The first and second oil discharge pipes 30a and 30b are installed near the proper oil level of the oil contained in each of the first and second compressors 20a and 20b to discharge the excess oil when the excess oil is generated. .

제1,2개폐밸브(90a,90b)는 제1온도센서(22,24) 및 제2온도센서(26,28)의 온도차에 의해 개폐된다. The first and second open / close valves 90a and 90b are opened and closed by the temperature difference between the first temperature sensors 22 and 24 and the second temperature sensors 26 and 28.

즉, 제1,2압축기(20a,20b) 내의 오일이 적정유면 이상으로 상승될 경우에는 제1온도센서(22,24)가 오일의 온도를 감지하고 제2온도센서(26,28)가 냉매의 온도를 감지하게 됨으로써 온도차가 발생하게 되고, 이는 오일과잉 상태를 나타내어 제1,2개폐밸브(90a,90b)가 개방된다.That is, when the oil in the first and second compressors 20a and 20b rises above the proper oil level, the first temperature sensors 22 and 24 sense the temperature of the oil and the second temperature sensors 26 and 28 detect the refrigerant. By detecting the temperature of the temperature difference is generated, which indicates the excess oil state, the first and second opening and closing valve (90a, 90b) is opened.

제1,2압축기(20a,20b) 내의 오일이 적정유면 이하로 하강될 경우에는 제1온도센서(22,24) 및 제2온도센서(26,28) 모두 냉매의 온도를 감지하게 됨으로써 온도차가 발생되지 않게 되고, 이는 오일부족 상태를 나타내어 제1,2개폐밸브(90a,90b)가 폐쇄된다.When the oil in the first and second compressors 20a and 20b falls below the proper oil level, both the first temperature sensors 22 and 24 and the second temperature sensors 26 and 28 sense the temperature of the refrigerant, thereby causing a temperature difference. It is not generated, which indicates an oil shortage condition, so that the first and second open / close valves 90a and 90b are closed.

균유관(50)은 제1온도센서(22,24) 및 제2온도센서(26,28)의 온도감지에 의해 제1,2개폐밸브(90a,90b)가 개방되면 제1,2오일배출관(30a,30b)을 통해 외부로 배출되는 오일을 제1,2압축기(20a,20b) 각각에 균등하게 공급하여, 오일량의 적정유면을 안정적으로 유지할 수 있도록 한다. 균유관(50)은 제1,2오일배출관(30a,30b)을 통해 배출된 오일을 제1,2압축기(20a,20b)에 개별적으로 공급할 수 있도록 설치할 수도 있으며, 균유관(50)의 배치구조는 필요에 따라 다양하게 변경 가능하다. When the first and second opening and closing valves 90a and 90b are opened by the temperature sensor of the first and second temperature sensors 22 and 24 and the second and second temperature sensors 26 and 28, the first and second oil discharge pipes 50 are. By supplying the oil discharged to the outside through the 30a, 30b to each of the first and second compressors 20a, 20b evenly, it is possible to stably maintain the proper oil level of the oil amount. The fungal oil tube 50 may be installed to separately supply the oil discharged through the first and second oil discharge pipes 30a and 30b to the first and second compressors 20a and 20b, and the arrangement of the fungal oil tube 50 The structure can be variously changed as necessary.

균유관(50)은 제1,2오일배출관(30a,30b)을 통해 외부로 배출되는 잉여분의 오일을 제1,2압축기(20a,20b)에 직접 공급하거나, 제1,2어큐뮬레이터(60a,60b)를 거쳐 제1,2압축기(20a,20b)로 공급한다.The fungal oil pipe 50 supplies the excess oil discharged to the outside through the first and second oil discharge pipes 30a and 30b directly to the first and second compressors 20a and 20b, or the first and second accumulators 60a and 60b) is supplied to the 1st, 2nd compressor 20a, 20b.

제1,2모세관(40a,40b)은 유동저항을 이용하여 오일의 흐름을 적절히 제어하기 위한 것이다.The first and second capillaries 40a and 40b are used to appropriately control the flow of oil by using flow resistance.

상기에서 설명한 공기조화기의 오일 흐름을 도 2를 참조하여 간단히 설명하면 하기와 같다.The oil flow of the air conditioner described above will be briefly described with reference to FIG. 2.

제1압축기(20a) 내에서는 제1,2온도센서(22,26)의 온도차가 발생되지 않고, 제2압축기(20b) 내에서는 제1,2온도센서(24,28)의 온도차가 발생된다고 가정하면, 온도차가 존재하는 제2압축기(20b)의 제2개폐밸브(90b)를 개방하여 오일이 제2오일토출관(30b)을 거쳐 균유관(50)을 따라 흘러 제1,2압축기(20a,20b)와 연통 설치되어 있는 제1,2어큐뮬레이터(60a,60b)로 공급된다. 이 때, 제1압축기(20a)의 제1개폐밸브(90a)는 폐쇄된 상태를 유지한다.The temperature difference between the first and second temperature sensors 22 and 26 is not generated in the first compressor 20a, and the temperature difference between the first and second temperature sensors 24 and 28 is generated within the second compressor 20b. Suppose, the second opening and closing valve 90b of the second compressor 20b having a temperature difference is opened so that the oil flows through the second oil discharge pipe 30b along the fungal oil pipe 50 and the first and second compressors ( It is supplied to the 1st, 2nd accumulators 60a, 60b provided in communication with 20a, 20b. At this time, the first opening / closing valve 90a of the first compressor 20a is kept closed.

이에 따라, 제1,2압축기(20a,20b)의 오일 적정유면을 항상 안정적으로 유지 시킬 수 있다.Accordingly, the oil titration oil level of the first and second compressors 20a and 20b can be maintained stably at all times.

상기에서는 2개의 압축기가 병렬로 배치되어 있는 공기조화기의 균유구조에 대해서만 설명하였으나, 이는 일 실시예에 불과하며 병렬로 배치된 복수의 압축기가 구비된 공기조화기에도 본 기술을 적용할 수 있음은 물론이다.In the above, only the homogeneous structure of the air conditioner in which the two compressors are arranged in parallel has been described. However, this is only an example, and the present invention may be applied to an air conditioner having a plurality of compressors arranged in parallel. Of course.

이상에서 설명한 바와 같이 본 발명에 따르면, 복수의 압축기 각각의 오일 유면확보가 상대적으로 용이할 뿐 아니라 균유구조가 단순하여 조립성을 향상시킬 수 있다.As described above, according to the present invention, it is relatively easy to secure the oil level of each of the plurality of compressors, and the homogeneous oil structure is simple, thereby improving the assemblability.

Claims (4)

병렬로 배치되어 있는 복수의 압축기와; 상기 복수의 압축기 각각에 설치되는 오일배출관과; 상기 오일배출관를 개폐하는 개폐밸브와; 상기 오일배출관에 연결되는 모세관과; 상기 모세관에 연결되는 균유관을 포함하는 공기조화기에 있어서,A plurality of compressors arranged in parallel; An oil discharge pipe installed in each of the plurality of compressors; An on / off valve for opening and closing the oil discharge pipe; A capillary tube connected to the oil discharge tube; In the air conditioner including a fungal oil pipe connected to the capillary, 상기 복수의 압축기 내부에는 냉매가스 및 오일의 온도를 측정하는 제1,2온도센서가 설치되고, 상기 개폐밸브는 상기 제1,2온도센서의 온도차에 의해 개폐되는 것을 특징으로 하는 공기조화기.The first and second temperature sensors for measuring the temperature of the refrigerant gas and oil are installed in the plurality of compressors, the air conditioner characterized in that the opening and closing valve is opened and closed by the temperature difference between the first and second temperature sensors. 제1항에 있어서,The method of claim 1, 상기 제1온도센서는 냉매가스의 온도를 측정할 수 있는 위치에 설치되고, 상기 제2온도센서는 오일면의 변화에 따라 오일의 온도 및 냉매가스의 온도를 선택적으로 측정할 수 있도록 오일의 적정유면 근처에 설치되는 것을 특징으로 하는 공기조화기.The first temperature sensor is installed at a position capable of measuring the temperature of the refrigerant gas, and the second temperature sensor is appropriate for the oil so as to selectively measure the temperature of the oil and the temperature of the refrigerant gas according to the change of the oil surface. Air conditioner is installed near the oil level. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 상기 개폐밸브는 오일이 적정유면 이상으로 상승되어 상기 제1,2온도센서의 온도차가 발생될 경우에는 개방되고, 오일이 적정유면 이하로 하강되어 상기 제1,2온도센서의 온도차가 발생되지 않을 경우에는 폐쇄되는 것을 특징으로 하는 공기조 화기.The on-off valve is opened when the oil rises above the proper oil level to generate a temperature difference between the first and second temperature sensors, and the oil is lowered below the proper oil level so that the temperature difference between the first and second temperature sensors does not occur. If the air conditioner is closed. 제1항에 있어서,The method of claim 1, 상기 균유관은 상기 오일배출관을 통해 외부로 배출된 오일을 상기 복수의 압축기 각각에 균등하게 공급할 수 있도록 설치되는 것을 특징으로 하는 공기조화기.The fungal oil pipe is an air conditioner, characterized in that it is installed to supply the oil discharged to the outside through the oil discharge pipe to each of the plurality of compressors evenly.
KR1020040113915A 2004-12-28 2004-12-28 Air conditioner KR100596573B1 (en)

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KR100853686B1 (en) * 2007-01-15 2008-08-25 엘지전자 주식회사 Oil measurement device for hermetic compressor
WO2009054593A1 (en) * 2007-10-25 2009-04-30 Lg Electronics Inc. Air conditioner
US8028539B2 (en) 2007-10-25 2011-10-04 Lg Electronics Inc. Air conditioner

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