KR100329479B1 - coolant collection apparatus of air conditioner - Google Patents
coolant collection apparatus of air conditioner Download PDFInfo
- Publication number
- KR100329479B1 KR100329479B1 KR1019990038153A KR19990038153A KR100329479B1 KR 100329479 B1 KR100329479 B1 KR 100329479B1 KR 1019990038153 A KR1019990038153 A KR 1019990038153A KR 19990038153 A KR19990038153 A KR 19990038153A KR 100329479 B1 KR100329479 B1 KR 100329479B1
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- South Korea
- Prior art keywords
- refrigerant
- heat exchanger
- side heat
- indoor side
- solenoid valve
- Prior art date
Links
- 239000002826 coolant Substances 0.000 title description 2
- 239000003507 refrigerant Substances 0.000 claims abstract description 128
- 238000011084 recovery Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- F25B45/00—Arrangements for charging or discharging 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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle
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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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/006—Details for charging or discharging refrigerants; Service stations therefor characterised by charging or discharging 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2521—On-off valves controlled by pulse signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
본 발명은 공기조화기의 냉매회수장치에 관한 것으로, 압축기, 실외측열교환기, 모세관 및 실내측열교환기의 순으로 냉매를 순환시켜 냉방싸이클을 형성하고, 상기 실내측열교환기에 유입되는 저온저압의 액냉매를 저장하는 냉매탱크를 구비한 공기조화기에 있어서, 상기 실내측열교환기로 유입되는 냉매흐름을 개폐하는 솔레노이드밸브와, 상기 공기조화기의 냉매회수온/오프신호를 입력하는 운전조작수단과, 상기 운전조작수단으로부터 냉매회수온신호가 입력되면 상기 실내측열교환기로 유입되는 냉매흐름을 차단하고 상기 실내측열교환기내의 냉매를 상기 냉매탱크로 회수하도록 상기 솔레노이드밸브를 폐쇄하기위한 제어신호를 출력하는 제어수단과, 상기 제어수단으로부터의 제어신호에 따라 상기 솔레노이드밸브를 폐쇄시키는 밸브구동수단으로 이루어져, 실내측열교환기의 입구측에 솔레노이드밸브를 설치한 냉매싸이클을 구성하여 실내측열교환기로 유입되는 냉매흐름은 차단하고 실내측열교환기내의 냉매는 냉매탱크로 다시 회수하여 별도의 회수장치가 필요없이 냉매회수가 가능하므로 설비 크기가 작고, 비용이 저렴하며 냉매 회수시 소음을 줄인다.The present invention relates to a refrigerant recovery device of an air conditioner, wherein the refrigerant is circulated in the order of a compressor, an outdoor side heat exchanger, a capillary tube, and an indoor side heat exchanger to form a cooling cycle. An air conditioner having a refrigerant tank for storing a liquid refrigerant, comprising: a solenoid valve for opening and closing a refrigerant flow flowing into the indoor side heat exchanger, an operation operation means for inputting a refrigerant recovery on / off signal of the air conditioner; Outputting a control signal for closing the solenoid valve to shut off the refrigerant flow flowing into the indoor side heat exchanger and to recover the refrigerant in the indoor side heat exchanger to the refrigerant tank when the refrigerant recovery temperature signal is input from the operation operation means; A valve drive for closing the solenoid valve in accordance with a control means and a control signal from the control means; It consists of a stage, which consists of a refrigerant cycle with a solenoid valve installed at the inlet side of the indoor side heat exchanger to block the flow of refrigerant into the indoor side heat exchanger, and recover the refrigerant in the indoor side heat exchanger back to the refrigerant tank to recover a separate device. Refrigerant recovery is possible without the need for small equipment size, low cost and low noise during refrigerant recovery.
Description
본 발명은 공기조화기에 관한 것으로, 특히 실내기의 냉매누설검사후 냉매싸이클을 이용하여 실내측열교환기의 냉매를 회수하는 공기조화기의 냉매회수장치에 관한 것이다.The present invention relates to an air conditioner, and more particularly, to a refrigerant recovery apparatus of an air conditioner for recovering a refrigerant of an indoor side heat exchanger by using a refrigerant cycle after a refrigerant leakage inspection of an indoor unit.
일반적으로, 공기조화기는 기능이나 유니트의 구성에 따라 여러 종류로 구분되어지는데, 기능면에서는 냉방전용, 냉방 및 제습전용, 냉방 및 난방겸용으로 분류될 수 있으며, 유니트의 구성면에서는 냉방과 방열기능을 일체화하여 창문등에설치되는 창문형과 실내측에는 냉각장치를 실외측에는 방열 및 압축장치를 각각 분리시켜 설치하는 분리형으로 구분되어진다.In general, air conditioners are classified into various types according to their function or configuration of the unit. In terms of function, air conditioners can be classified into cooling only, cooling and dehumidification only, and cooling and heating. It is divided into a window type that is integrated into a window and a cooling type on an indoor side, and a separate type that separates and installs a heat dissipation and a compression device on an outdoor side.
이러한, 종래의 분리형 공기조화기에서는 실내기의 냉매누설불량을 검사하기 위해, 실내기에 냉매를 주입한다음 냉매가스를 검출하여 냉매의 누설여부를 검사하고 있으며, 냉매누설검사 후에는 가스 부스터 펌프(GAS BOOSTER PUMP)를 이용하여 실내기에 주입된 냉매를 냉매탱크로 회수하였다.In the conventional separate type air conditioner, the refrigerant is injected into the indoor unit in order to check the refrigerant leakage of the indoor unit, and then the refrigerant gas is detected and the refrigerant is leaked. After the refrigerant leakage inspection, the gas booster pump (GAS) BOOSTER PUMP) to recover the refrigerant injected into the indoor unit to the refrigerant tank.
그런데, 이와같이 구성된 종래 공기조화기의 냉매회수장치에 있어서는, 실내기에 주입된 냉매를 회수하기 위한 가스 부스터 펌프를 별도로 설치해야 하므로 설비 장치가 복잡하고 설비 크기가 클뿐만 아니라, 가스 부스터 펌프의 작동시 소음이 크다는 문제점이 있었다.However, in the refrigerant recovery device of the conventional air conditioner configured as described above, since the gas booster pump for recovering the refrigerant injected into the indoor unit must be separately installed, the equipment is not only complicated and large in size, but also when the gas booster pump is operated. There was a problem that the noise was large.
따라서, 본 발명은 상술한 종래의 문제점을 해결하기 위하여 안출된 것으로, 실내측열교환기의 입구측에 솔레노이드밸브를 설치한 냉매싸이클을 구성하여 냉매 회수시에는 솔레노이드밸브를 폐쇄시키므로 실내측열교환기로 유입되는 냉매흐름은 차단하고 실내측열교환기내의 냉매는 냉매탱크로 다시 회수하여 별도의 회수장치가 필요없이 냉매회수가 가능하므로 설비 크기가 작고, 비용이 저렴하며 냉매 회수시 소음을 줄이는 공기조화기의 냉매회수장치를 제공하는데 그 목적이 있다.Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and constitutes a refrigerant cycle in which a solenoid valve is installed at the inlet side of the indoor side heat exchanger. Since the refrigerant flow is blocked and the refrigerant in the indoor side heat exchanger is recovered back into the refrigerant tank, it is possible to recover the refrigerant without the need for a separate recovery device. The purpose is to provide a refrigerant recovery device.
본 발명의 다른 목적은, 실내측열교환기의 입구측에 솔레노이드밸브를 설치하는 냉매싸이클을 구성하여 냉매 미회수시에는 솔레노이드밸브를 개방시키므로 정상냉방운전을 행하는 공기조화기의 냉매회수장치를 제공하는데 있다.Another object of the present invention is to provide a refrigerant recovery device for an air conditioner that performs a normal cooling operation by configuring a refrigerant cycle for installing a solenoid valve at an inlet side of an indoor side heat exchanger and opening the solenoid valve when the refrigerant is not recovered. have.
상기 목적을 달성하기 위하여 본 발명에 의한 공기조화기의 냉매회수장치는, 압축기, 실외측열교환기, 모세관 및 실내측열교환기의 순으로 냉매를 순환시켜 냉방싸이클을 형성하고, 상기 실내측열교환기에 유입되는 저온저압의 액냉매를 저장하는 냉매탱크를 구비한 공기조화기에 있어서, 상기 실내측열교환기로 유입되는 냉매흐름을 개폐하는 솔레노이드밸브와, 상기 공기조화기의 냉매회수온/오프신호를 입력하는 운전조작수단과, 상기 운전조작수단으로부터 냉매회수온신호가 입력되면 상기 실내측열교환기로 유입되는 냉매흐름을 차단하고 상기 실내측열교환기내의 냉매를 상기 냉매탱크로 회수하도록 상기 솔레노이드밸브를 폐쇄하기위한 제어신호를 출력하는 제어수단과, 상기 제어수단으로부터의 제어신호에 따라 상기 솔레노이드밸브를 폐쇄시키는 밸브구동수단으로 이루어진 것을 특징으로 한다.In order to achieve the above object, the refrigerant recovery apparatus of an air conditioner according to the present invention forms a cooling cycle by circulating a refrigerant in the order of a compressor, an outdoor side heat exchanger, a capillary tube, and an indoor side heat exchanger. An air conditioner having a refrigerant tank for storing a low-temperature, low-pressure liquid refrigerant, comprising: a solenoid valve for opening and closing a refrigerant flow flowing into the indoor side heat exchanger; and a refrigerant recovery on / off signal of the air conditioner. A driving operation means and a closing valve of the solenoid valve to block the flow of the refrigerant flowing into the indoor side heat exchanger when the refrigerant recovery temperature signal is input from the operation operation means and to recover the refrigerant in the indoor side heat exchanger to the refrigerant tank. Control means for outputting a control signal and the solenoid valve in accordance with a control signal from the control means. Characterized in that the valve drive means for closing.
도 1은 본 발명에 의한 공기조화기의 냉매싸이클도,1 is a refrigerant cycle diagram of an air conditioner according to the present invention;
도 2는 본 발명의 일실시예에 의한 공기조화기의 냉매회수장치의 제어블록도.Figure 2 is a control block diagram of a refrigerant recovery device of the air conditioner according to an embodiment of the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>
30 : 압축기 40 : 실외측열교환기30: compressor 40: outdoor side heat exchanger
50 : 모세관 60 : 실내측열교환기50: capillary tube 60: indoor heat exchanger
70 : 솔레노이드밸브 80 : 냉매탱크70: solenoid valve 80: refrigerant tank
104 : 제어수단 114 : 밸브구동수단104: control means 114: valve driving means
이하, 본 발명의 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 의한 공기조화기의 냉매싸이클도는 도 1에 도시한 바와같이, 냉매를 고온고압의 기체상태로 압축시키는 압축기(30)와, 상기 압축기(30)에서 고온고압으로 압축된 기체냉매를 실외팬(41)에 의해 송풍되는 공기로 열교환하여 저온고압의 액냉매로 냉각응축시키는 실외측열교환기(40)와, 상기 실외측열교환기(40)에서 냉각응축된 저온고압의 액냉매를 증발하기쉬운 저온저압의 액냉매로 감압팽창시키는 모세관(50)과, 상기 모세관(50)을 통과한 저온저압의 액냉매를 실내팬(61)에 의해 송풍되는 공기로 열교환하여 증발시키면서 저온저압의 완전 기체상태의 냉매가스로 변환시키는 실내측열교환기(60)와, 냉매 회수온/오프에 따라 상기 실내측열교환기(60)로 유입되는 냉매흐름을 개폐시키는 솔레노이드밸브(70)와, 저온저압의 액냉매를 저장하는 냉매탱크(80)와, 상기 냉매탱크(80)에 저장된 저온저압의 액냉매 흐름을 수동으로 개폐조작하는 차단밸브(90)로 구성되어 있다.As shown in FIG. 1, a refrigerant cycle diagram of an air conditioner according to the present invention includes a compressor (30) for compressing a refrigerant into a gas state of high temperature and high pressure, and a gas refrigerant compressed to high temperature and high pressure in the compressor (30). The outdoor side heat exchanger 40 which heat-exchanges with the air blown by the outdoor fan 41 to cool and condense the liquid refrigerant of low temperature and high pressure, and the low temperature and high pressure liquid refrigerant that is condensed by the outdoor side heat exchanger 40 to evaporate. Capillary tube 50 which expands under reduced pressure with a low temperature low pressure liquid refrigerant and low temperature low pressure liquid refrigerant having passed through the capillary tube 50 are exchanged with air blown by the indoor fan 61 to evaporate to complete low temperature low pressure. An indoor side heat exchanger (60) for converting gaseous refrigerant gas, a solenoid valve (70) for opening and closing a refrigerant flow flowing into the indoor side heat exchanger (60) according to refrigerant recovery on / off, and a low temperature low pressure Refrigerant to store liquid refrigerant Consists of a large 80 and a shut-off valve (90) for manually opening and closing operation by the liquid refrigerant flow of a low-temperature and low-pressure refrigerant stored in the tank 80.
상기와 같이 구성된 공기조화기의 냉매회수장치의 제어블록도를 도 2를 참조하여 설명한다.A control block diagram of the refrigerant recovery device of the air conditioner configured as described above will be described with reference to FIG.
도 2에 도시한 바와같이, 전원수단(100)은 상용교류전압을 소정의 직류전압으로 변환하여 출력하고, 운전조작수단(102)은 공기조화기의 운전모드(자동, 냉방, 제습, 송풍 등)와 설정풍량, 설정온도(Ts)를 입력함은 물론, 냉매 회수온/오프, 공기조화기의 운전온/오프를 입력하는 다수의 키를 구비하고 있다.As shown in FIG. 2, the power supply means 100 converts a commercial AC voltage into a predetermined DC voltage, and outputs the same. The operation operation means 102 is an operation mode of an air conditioner (automatic, cooling, dehumidifying, blowing, etc.). ), A set air volume and a set temperature (Ts), as well as a plurality of keys for inputting the refrigerant recovery on / off and the operation on / off of the air conditioner.
그리고, 제어수단(104)은 상기 운전조작수단(102)으로부터 입력된 냉매 회수온/오프신호에 따라 상기 실내측열교환기(60)로 유입되는 냉매흐름을 개폐하도록 상기 솔레노이드밸브(70)를 온/오프제어한다.Then, the control means 104 turns on the solenoid valve 70 to open and close the refrigerant flow flowing into the indoor side heat exchanger 60 in accordance with the refrigerant recovery on / off signal input from the operation operation means 102. Control on / off.
실내온도감지수단(106)은 상기 운전조작수단(102)에 의해 사용자가 설정한 온도(Ts)로 실내온도를 제어하도록 실내공기의 온도(Tr)를 감지하고, 압축기구동수단(108)은 설정온도(Ts) 및 실내온도(Tr)의 비교결과에 따라 압축기(30)를 온/오프구동시킨다.The indoor temperature detecting means 106 detects the temperature Tr of the indoor air so as to control the indoor temperature at the temperature Ts set by the user by the driving operation means 102, and the compressor driving means 108 is set. The compressor 30 is turned on / off according to the comparison result of the temperature Ts and the room temperature Tr.
또한, 실외팬모터구동수단(110)은 설정온도(Ts) 및 실내온도(Tr)의 비교결과에 따라 실외팬(41)을 온/오프구동시키고, 실내팬모터구동수단(112)은 상기 실내측열교환기(60)에서 열교환된 공기(냉풍)를 실내로 송풍하도록 설정풍량에 따라 실내팬모터의 회전수를 제어하여 실내팬(61)을 온/오프구동시킨다.In addition, the outdoor fan motor driving means 110 drives the outdoor fan 41 on / off according to the comparison result of the set temperature (Ts) and the room temperature (Tr), the indoor fan motor driving means 112 is the indoor The indoor fan 61 is driven on / off by controlling the rotation speed of the indoor fan motor according to the set air volume so as to blow air (cold air) heat exchanged by the heat exchanger (60) into the room.
또, 밸브구동수단(114)은 상기 공기조화기의 냉매 회수온/오프에 따라 실내측열교환기(60)로 유입되는 냉매흐름을 개폐하도록 상기 제어수단(104)으로부터 출력되는 제어신호를 받아서 솔레노이드밸브(70)를 온/오프구동시킨다.In addition, the valve driving means 114 receives the control signal output from the control means 104 to open and close the refrigerant flow flowing into the indoor side heat exchanger 60 in accordance with the refrigerant recovery on / off of the air conditioner solenoid The valve 70 is turned on / off.
이하, 상기와 같이 구성된 공기조화기의 냉매회수장치의 작용효과를 설명한다.Hereinafter, the effect of the refrigerant recovery device of the air conditioner configured as described above will be described.
본 발명의 동작설명을 위한 초기 조건으로서, 냉매탱크(80)의 일측에 설치된 차단밸브(90)는 개방(수동조작)되어 있다고 가정한다.As an initial condition for explaining the operation of the present invention, it is assumed that the shutoff valve 90 installed on one side of the refrigerant tank 80 is open (manual operation).
먼저, 냉매 미회수시에는 사용자가 운전조작수단(102)을 조작하여 운전키를 누른다음 원하는 공기조화기의 운전모드(예를들면, 냉방)와 설정온도(Ts), 설정풍량을 입력하면, 운전조작수단(102)으로부터 운전시작신호와 운전선택신호가 제어수단(104)에 입력된다.First, when the refrigerant is not recovered, the user operates the operation control unit 102 and presses the operation key, and then inputs the operation mode (for example, cooling), the set temperature (Ts), and the set air volume of the desired air conditioner. The operation start signal and the operation selection signal are input to the control means 104 from the operation operation means 102.
따라서, 상기 제어수단(104)은 냉방운전을 수행하기 위해 실내팬(61)을 구동(온)하기위한 제어신호를 실내팬모터구동수단(112)에 출력함과 동시에 솔레노이드밸브(70)를 구동(개방)하기위한 제어신호를 밸브구동수단(114)에 출력한다.Therefore, the control means 104 outputs a control signal for driving (on) the indoor fan 61 to perform the cooling operation to the indoor fan motor driving means 112 and simultaneously drives the solenoid valve 70. The control signal for opening (open) is output to the valve driving means 114.
이에 따라, 상기 실내팬모터구동수단(112)에서는 설정풍량에 따라 제어수단(104)으로부터 출력되는 제어신호를 받아서 실내팬(61)을 구동시키고, 밸브구동수단(114)은 제어수단(104)으로부터 출력되는 제어신호를 받아서 솔레노이드밸브(70)를 온(개방)시킨다.Accordingly, the indoor fan motor driving means 112 receives the control signal output from the control means 104 according to the set air volume to drive the indoor fan 61, the valve driving means 114 is the control means 104 The solenoid valve 70 is turned on (opened) by receiving a control signal output from the same.
상기 솔레노이드밸브(70)가 온(개방)되면, 냉매탱크(80)에 저장된 저온저압의 액냉매가 차단밸브(90)와 솔레노이드밸브(70)를 통해 실내측열교환기(60)의 입구측으로 유입되기 시작한다.When the solenoid valve 70 is turned on (opened), the low temperature low pressure liquid refrigerant stored in the refrigerant tank 80 flows into the inlet side of the indoor side heat exchanger 60 through the shutoff valve 90 and the solenoid valve 70. It begins to be.
또한, 상기 실내팬(61)이 온되면 실내공기가 흡입되기 시작하는데, 이때 흡입되는 실내공기의 온도(Tr)를 실내온도감지수단(106)에서 감지한다.In addition, when the indoor fan 61 is turned on, indoor air starts to be sucked. At this time, the indoor temperature sensing means 106 detects the temperature Tr of the sucked indoor air.
따라서, 제어수단(104)은 상기 실내온도감지수단(106)에 의해 감지된 실내온도(Tr)와 설정온도(Ts)를 비교하여 실내온도(Tr)가 설정온도(Ts)보다 높으면 압축기(30)와 실외팬(41)을 구동하기 위한 제어신호를 압축기구동수단(108)과 실외팬모터구동수단(110)에 출력한다.Accordingly, the control means 104 compares the indoor temperature Tr and the set temperature Ts sensed by the room temperature sensing means 106 and if the room temperature Tr is higher than the set temperature Ts, the compressor 30. ) And a control signal for driving the outdoor fan 41 to the compressor driving means 108 and the outdoor fan motor driving means 110.
이에 따라, 상기 압축기구동수단(108)에서는 제어수단(104)으로부터 출력되는 제어신호를 받아서 압축기(30)를 구동(온)시키고, 실외팬모터구동수단(110)에서는 제어수단(104)으로부터 출력되는 제어신호를 받아서 실외팬(41)을 구동(온)시킨다.Accordingly, the compressor driving means 108 receives the control signal output from the control means 104 to drive (on) the compressor 30, and outputs the control fan 104 from the outdoor fan motor driving means 110. The outdoor fan 41 is driven (on) in response to the control signal.
상기 압축기(30)와 실외팬(41)이 온되면, 냉매탱크(80)에 저장된 저온저압의 액냉매가 차단밸브(90)와 솔레노이드밸브(70)를 통해 실내측열교환기(60)로 유입되고, 상기 실내측열교환기(60)로 유입된 액냉매는 냉매의 증발잠열에 의해 저온저압의 기체냉매로 냉각되어 압축기(30)로 흡입되고 압축기(30)의 단열압축작용에 의해 고온고압의 냉매가스로 변환되어 토출된다.When the compressor 30 and the outdoor fan 41 are turned on, the low temperature and low pressure liquid refrigerant stored in the refrigerant tank 80 flows into the indoor side heat exchanger 60 through the shutoff valve 90 and the solenoid valve 70. The liquid refrigerant introduced into the indoor side heat exchanger (60) is cooled by a low-temperature low-pressure gas refrigerant by latent heat of evaporation of the refrigerant, sucked into the compressor (30), and the high temperature and high pressure by the adiabatic compression action of the compressor (30). It is converted into refrigerant gas and discharged.
상기 압축기(30)로부터 토출된 고온고압의 기체냉매는 실외측열교환기(40)에 유입되고, 상기 실외측열교환기(40)에서는 고온고압으로 압축된 기체냉매를 실외팬(41)에 의해 송풍되는 공기로 열교환하여 강제냉각시켜 응축시키며, 상기 실외측열교환기(40)에서 응축된 저온고압의 액냉매는 모세관(50)으로 유입된다.The high temperature and high pressure gas refrigerant discharged from the compressor (30) flows into the outdoor side heat exchanger (40), and the outdoor side heat exchanger (40) blows the gas refrigerant compressed to high temperature and high pressure by the outdoor fan (41). Heat-condensed by air to be forced cooling to condense, the low-temperature high-pressure liquid refrigerant condensed in the outdoor side heat exchanger 40 is introduced into the capillary tube (50).
상기 모세관(50)으로 유입된 저온고압의 액냉매는 증발하기쉬운 저온저압의 액냉매로 팽창되어 솔레노이드밸브(70)를 통해 실내측열교환기(60)에 유입되고, 상기 실내측열교환기(60)에서는 냉매가 증발하여 기화할때 실내팬(61)에 의해 송풍되는 공기에서 열을 빼앗아 실내공기를 냉각시킨다음, 그 냉각된 공기(냉풍)를 실내로 토출해서 냉방운전을 행하고, 상기 실내측열교환기(60)에서 냉각된 저온저압의 기체냉매는 다시 압축기(30)로 흡입되어 도 1의 실선화살표 방향에 따라 냉매싸이클을 반복하면서 실내냉방을 행한다.The low temperature and high pressure liquid refrigerant introduced into the capillary tube 50 is expanded into a low temperature and low pressure liquid refrigerant that is easy to evaporate, and flows into the indoor side heat exchanger 60 through the solenoid valve 70, and the indoor side heat exchanger 60. ) Takes the heat from the air blown by the indoor fan 61 when the refrigerant evaporates and vaporizes, cools the indoor air, discharges the cooled air (cold air) into the room, and performs the cooling operation. The low temperature and low pressure gas refrigerant cooled by the heat exchanger 60 is again sucked into the compressor 30 to perform indoor cooling while repeating the refrigerant cycle along the solid arrow direction of FIG. 1.
한편, 냉매 회수시에는 실내측열교환기(60)에 냉매를 주입한다음 냉매가스를 검출하여 냉매누설불량을 검사한 후, 작업자가 운전조작수단(102) 또는 시스템판넬상에 별도로 구비된 냉매회수키를 온하면, 상기 운전조작수단(102)으로부터 냉매회수온신호가 제어수단(104)에 입력된다.On the other hand, when the refrigerant is recovered, the refrigerant is injected into the indoor side heat exchanger 60, and after detecting the refrigerant gas and inspecting the refrigerant leakage failure, the operator recovers the refrigerant separately provided on the operation operation means 102 or the system panel. When the key is turned on, the coolant recovery temperature signal is inputted to the control means 104 from the operation operation means 102.
따라서, 상기 제어수단(104)은 실내측열교환기(60)에 주입된 냉매를 회수하기 위해 솔레노이드밸브(70)를 구동(폐쇄)하기위한 제어신호를 밸브구동수단(114)에 출력한다.Accordingly, the control means 104 outputs a control signal for driving (closing) the solenoid valve 70 to the valve driving means 114 to recover the refrigerant injected into the indoor side heat exchanger 60.
이에 따라, 상기 밸브구동수단(114)은 제어수단(104)으로부터 출력되는 제어신호를 받아서 솔레노이드밸브(70)를 오프(폐쇄)시킨다.Accordingly, the valve driving means 114 receives the control signal output from the control means 104 to turn off (close) the solenoid valve 70.
상기 솔레노이드밸브(70)가 오프(폐쇄)되면, 실내측열교환기(60)의 입구측으로 유입되는 저온저압의 액냉매 흐름이 차단되면서 상기 실내측열교환기(60)내의 냉매는 압축기(30)의 흡입력에 의해 압축기(30)로 흡입되어 압축기(30)의 단열압축작용에 의해 고온고압의 냉매가스로 변환되어 토출된다.When the solenoid valve 70 is turned off (closed), the low-temperature low-pressure liquid refrigerant flows to the inlet side of the indoor side heat exchanger (60), and the refrigerant in the indoor side heat exchanger (60) is blocked by the compressor (30). It is sucked into the compressor 30 by the suction force, and is converted into a refrigerant gas of high temperature and high pressure by the adiabatic compression action of the compressor 30 and discharged.
상기 압축기(30)로부터 토출된 고온고압의 기체냉매는 실외측열교환기(40)에 유입되고, 상기 실외측열교환기(40)에서는 고온고압으로 압축된 기체냉매를 실외팬(41)에 의해 송풍되는 공기로 열교환하여 강제냉각시켜 응축시키며, 상기 실외측열교환기(40)에서 응축된 저온고압의 액냉매는 모세관(50)으로 유입된다.The high temperature and high pressure gas refrigerant discharged from the compressor (30) flows into the outdoor side heat exchanger (40), and the outdoor side heat exchanger (40) blows the gas refrigerant compressed to high temperature and high pressure by the outdoor fan (41). Heat-condensed by air to be forced cooling to condense, the low-temperature high-pressure liquid refrigerant condensed in the outdoor side heat exchanger 40 is introduced into the capillary tube (50).
상기 모세관(50)으로 유입된 저온고압의 액냉매는 증발하기쉬운 저온저압의 액냉매로 팽창되어 도 1의 점선화살표 방향에 따라 차단밸브(90)를 통해 냉매탱크(80)로 다시 회수된다.The low-temperature high-pressure liquid refrigerant introduced into the capillary tube 50 is expanded into a low-temperature low-pressure liquid refrigerant that is easy to evaporate, and is recovered back to the refrigerant tank 80 through the shutoff valve 90 in the dotted arrow direction of FIG. 1.
상기의 설명에서와 같이 본 발명에 의한 공기조화기의 냉매회수장치에 의하면, 실내측열교환기의 입구측에 솔레노이드밸브를 설치한 냉매싸이클을 구성하여 냉매 회수시에는 솔레노이드밸브를 폐쇄시키므로 실내측열교환기로 유입되는 냉매흐름은 차단하고 실내측열교환기내의 냉매는 냉매탱크로 다시 회수하여 별도의 회수장치가 필요없이 냉매회수가 가능하므로 설비 크기가 작고, 비용이 저렴하며 냉매 회수시 소음을 줄일 수 있으며, 냉매 미회수시에는 솔레노이드밸브를 개방시켜 정상냉방운전을 행한다는 효과가 있다.As described above, according to the refrigerant recovery apparatus of the air conditioner according to the present invention, a refrigerant cycle having a solenoid valve installed at the inlet side of the indoor side heat exchanger constitutes a refrigerant cycle, so that the solenoid valve is closed when the refrigerant is recovered. The refrigerant flow into the air is blocked and the refrigerant in the indoor side heat exchanger is recovered back into the refrigerant tank, which allows the refrigerant to be recovered without the need for a separate recovery device. When the refrigerant is not recovered, the solenoid valve is opened to effect normal cooling operation.
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