KR100251138B1 - Refrigerant over charge prevention apparatus of vehicle air-conditioner - Google Patents

Refrigerant over charge prevention apparatus of vehicle air-conditioner Download PDF

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Publication number
KR100251138B1
KR100251138B1 KR1019960053152A KR19960053152A KR100251138B1 KR 100251138 B1 KR100251138 B1 KR 100251138B1 KR 1019960053152 A KR1019960053152 A KR 1019960053152A KR 19960053152 A KR19960053152 A KR 19960053152A KR 100251138 B1 KR100251138 B1 KR 100251138B1
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KR
South Korea
Prior art keywords
refrigerant
pressure sensing
piston rod
charge valve
piston
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KR1019960053152A
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Korean (ko)
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KR19980034951A (en
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이병준
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정몽규
현대자동차주식회사
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Priority to KR1019960053152A priority Critical patent/KR100251138B1/en
Publication of KR19980034951A publication Critical patent/KR19980034951A/en
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Publication of KR100251138B1 publication Critical patent/KR100251138B1/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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • 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
    • F25B2500/07—Exceeding a certain pressure value in a refrigeration component or cycle
    • 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
    • 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
    • F25B2700/19—Pressures

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

PURPOSE: A refrigerant overcharge prevention apparatus for vehicle air conditioner is provided to prevent damage to each part of the cooling cycle and achieve maximized cooling efficiency by operating the cooling cycle with an optimum amount of refrigerant. CONSTITUTION: An apparatus comprises a pressure sensing unit(10) for sensing abnormal pressure of the refrigerant and operating a pressure sensing switch; a refrigerant discharge unit(20) which has a charge valve(21) mounted at a refrigerant circulation line(5), a piston rod inserted into the refrigerant passage of the charge valve, a refrigerant passage opening/shutting valve coupled to the top of the piston rod and a spring mounted onto the piston; and an operating unit(30) for connecting a relay(14) and a solenoid(31), and a master cylinder(34) and a release cylinder(37) through a connection hose(36) such that a piston rod(35) of the release cylinder operates the piston of the charge valve by the operation of the solenoid.

Description

차량 에어콘의 냉매 과충전 방지장치Refrigerant overcharge prevention device of vehicle air conditioner

본 발명은 차량 에어콘의 냉매 과충전 방지장치에 관한 것으로, 특히 차량 에어콘의 냉매 과충전으로 인하여 냉각 사이클의 각부 기기에 무리가 발생하여 손상되는 것을 방지하고, 적정량 냉매를 순환시켜 냉기를 차량실내에 공급하며 따라서 차량실내의 냉각효율을 크게 향상시킬 수 있도록 한 차량 에어콘의 냉매 과충전 방지장치에 관한 것이다.The present invention relates to a refrigerant overcharge preventing device of a vehicle air conditioner, and in particular, to prevent damage caused by overcharge of the vehicle air conditioner to each unit of the cooling cycle, and to supply the cool air to the vehicle cabin by circulating a proper amount of refrigerant Accordingly, the present invention relates to a refrigerant overcharge preventing device for a vehicle air conditioner to greatly improve the cooling efficiency in a vehicle cabin.

일반적으로 종래의 차량 에어콘은 냉매를 압축기로 압축한 다음 응축기로 고온고압의 냉매를 응축시켜 팽창변을 통하여 단열팽창시키고, 단열팽창된 냉매가 증발기를 통과하면서 외부공기와 열교환하여 차가운 공기를 차량의 실내로 공급하였다.In general, a conventional vehicle air conditioner compresses a refrigerant into a compressor and condenses a high-temperature, high-pressure refrigerant into a condenser, and adiabatic expands through an expansion valve. The adiabatic expanded refrigerant exchanges heat with outside air while passing through an evaporator to cool air inside a vehicle. Was supplied.

그러나, 이러한 종래의 기술은 일반수요자가 에어콘의 성능을 높이기 위하여 냉매를 재충전하거나, 부주위로 냉매를 과도하게 충전시키는 경우가 종종 발생되고, 이로 인하여 냉매 순환라인의 압축기, 응측기, 리시버 드라이어, 팽창변 및 증발기 등의 기기에 무리가 발생하여 손상의 우려가 높을 뿐 아니라, 냉매를 과충전으로 냉각효율이 크게 저하되는 문제점이 있었다.However, in the conventional technology, the general consumer often recharges the refrigerant to increase the performance of the air conditioner, or excessively charges the refrigerant around the periphery, thereby causing the compressor circulation line, the compressor, the receiver dryer, the expansion valve of the refrigerant circulation line. In addition, there is a high possibility of damage due to excessive generation of equipment such as an evaporator, and there is a problem in that the cooling efficiency is greatly reduced by overcharging the refrigerant.

따라서 본 발명은 상기한 문제점을 해소하기 위하여 안출한 것으로, 그 목적은 차량의 에어콘에 냉매 과충전이 발생하며 이를 감지하여 냉매를 외부로 신속하게 배출시켜 적정량의 냉매를 유지시켜 에어콘의 냉각 사이클을 순환시키게 됨으로써, 냉각 사이클 각부의 손상을 방지하고, 냉각효율을 크게 증대시킬 수 있도록 하는 차량 에어콘의 냉매 과충전 방지장치를 제공하는 데 있다.Therefore, the present invention has been made in order to solve the above problems, its purpose is to detect the overcharge of the refrigerant in the air conditioner of the vehicle and detects this quickly discharge the refrigerant to the outside to maintain the appropriate amount of refrigerant to circulate the cooling cycle of the air conditioner The present invention provides a refrigerant overcharge preventing device for a vehicle air conditioner that prevents damage to each part of a cooling cycle and greatly increases cooling efficiency.

도 1 은 본 발명의 냉매 과충전 방지장치 블록도.1 is a block diagram of a refrigerant overcharge preventing device of the present invention.

도 2 는 본 발명의 냉매 과충전 방지장치 상세도.Figure 2 is a detailed view of the refrigerant overcharge preventing device of the present invention.

도 3 은 본 발명의 냉매 과충전 배출부 상세도.Figure 3 is a detailed view of the refrigerant overcharge discharge unit of the present invention.

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

1 : 압축기 2 : 증발기1: compressor 2: evaporator

3 : 응축기 4 : 리시버 드라이어3: condenser 4: receiver dryer

5 : 냉매 순환라인 10 : 압력 감지부5: refrigerant circulation line 10: pressure sensing unit

11 : 금속 다이어프램 12a, 12b :접점11: metal diaphragm 12a, 12b: contact

13 : 압력감지 스위치 14 : 릴레이13: pressure sensing switch 14: relay

20 : 냉매 배출부 21 : 차지밸브20: refrigerant discharge portion 21: charge valve

22 : 냉매 통로 23 : 피스톤22: refrigerant passage 23: piston

24 :피스톤 로드 25 : 스프링24: piston rod 25: spring

26 : 밸브 30 : 작동부26: valve 30: operating part

31 : 솔레노이드 32 : 솔레노이드 로드31: Solenoid 32: Solenoid Rod

33 : 레버 34 : 마스터 실린더33: lever 34: master cylinder

35 : 피스톤 로드 36 : 연결호스35: piston rod 36: connection hose

37 : 릴리스 실린더 38 : 피스톤 로드37: release cylinder 38: piston rod

위와 같은 목적을 달성하기 위하여 본 발명은 냉매의 이상압력 발생을 감지하여 압력감지 스위치로 작동시키는 압력 감지부와, 냉매 순환라인에 설치한 차지밸브를 열어 냉매를 배출시키는 냉매 배출부와, 상기 압력 감지부의 압력감지 스위치의 작동으로 차지밸브를 개폐시키는 작동부로 구성함을 그 기술적 구성상의 기본 특징으로 한다.In order to achieve the above object, the present invention is a pressure sensing unit for detecting the occurrence of abnormal pressure of the refrigerant to operate as a pressure sensing switch, a refrigerant discharge unit for discharging the refrigerant by opening the charge valve installed in the refrigerant circulation line, the pressure It is a basic feature of the technical configuration that the configuration of the operating unit for opening and closing the charge valve by the operation of the pressure sensing switch of the sensing unit.

위와 같이 구성된 본 발명의 실시예를 첨부된 도면을 참조하면서 상세히 설명하면 다음과 같다.An embodiment of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

도 1 내지 도 3 에 나타낸 바와 같이, 압력 감지부(10)는 에어콘의 냉매 순환라인(5)에 설치하고, 냉매 순환라인(5)측에 금속 다이어프램(11)을 설치하며, 금속 다이어프램(11)의 후측에 압력감지 스위치(14)의 접점(12a, 12b)을 설치하되, 상기 압력감지 스위치(14)에 릴레이(14)를 접속한다.1 to 3, the pressure sensing unit 10 is installed in the refrigerant circulation line 5 of the air conditioner, the metal diaphragm 11 is installed on the refrigerant circulation line 5 side, and the metal diaphragm 11 is provided. On the rear side of), the contacts 12a and 12b of the pressure sensing switch 14 are provided, but the relay 14 is connected to the pressure sensing switch 14.

냉매 배출부(20)는 냉매 순환라인(5)에 차지밸브(21)를 설치하고, 차지밸브(21)의 냉매통로(22)에 피스톤(23)에 부착된 피스톤 로드(24)를 삽입시키되, 피스톤 로드(24)의 상단에 냉매통로(22) 개폐용 밸브(25)를 결합시키고, 피스톤(23)의 상측에 스프링(25)를 설치하여 항상 피스톤(23)이 하측으로 내려와 피스톤 로드(24)의 상단에 결합된 밸브(26)가 냉매통로(22)를 차단시키도록 한다.The refrigerant discharge unit 20 installs the charge valve 21 in the refrigerant circulation line 5, and inserts the piston rod 24 attached to the piston 23 into the refrigerant passage 22 of the charge valve 21. , The refrigerant passage 22 opening and closing valve 25 is coupled to the upper end of the piston rod 24, the spring 25 is installed on the upper side of the piston 23, the piston 23 is always lowered to the piston rod ( The valve 26 coupled to the upper end of the 24 blocks the refrigerant passage 22.

작동부(30)는 상기 압력 감지부(10)의 릴레이(14)와 솔레노이드(31)를 접속시키고, 솔레노이드 로드(32)의 단부를 중앙을 축결합시킨 레버(33)의 일측단에 부착하며 레버(33)의 타측단에 마스터 실린더(34)의 피스톤 로드(35)을 부착하되, 마스트 실린더(34)와 릴리스 실린더(37)를 연결호스(36)로 연통시키고, 릴리스 실린더(37)의 피스톤 로드(38)단부를 차지밸브(21)의 피스톤 저면에 결합시켜 구성한다.The operation unit 30 connects the relay 14 and the solenoid 31 of the pressure sensing unit 10, and attaches an end of the solenoid rod 32 to one end of the lever 33 which is axially coupled to the center. The piston rod 35 of the master cylinder 34 is attached to the other end of the lever 33, and the mast cylinder 34 and the release cylinder 37 communicate with the connection hose 36, and the release cylinder 37 The end of the piston rod 38 is coupled to the bottom of the piston of the charge valve 21.

이러한 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention as follows.

냉매 순환라인(5)에 냉매 과충전으로 이상압력이 발생하면 압력 감지부(10)의 금속 다이어프램(11)을 압압하게 되므로 금속 다이어프램(11)이 압력감지 스위치(13)의 접점(12a, 12b)을 통전시켜 릴레이(14)를 "온"시켜 솔레노이드(31)를 작동시키면, 솔레노이드 로드(32)가 레버(33)의 일측을 당겨 레버(33)를 회전시키게 되고, 이때 레버(33)의 타측에 부착된 마스터 실린더(34)의 피스톤 로드(35)를 밀게 된다.When abnormal pressure is generated due to refrigerant overcharging in the refrigerant circulation line 5, the metal diaphragm 11 of the pressure sensing unit 10 is pressed, so that the metal diaphragm 11 contacts 12a and 12b of the pressure sensing switch 13. When the solenoid 31 is operated by energizing the relay 14 to turn on the solenoid 31, the solenoid rod 32 pulls one side of the lever 33 to rotate the lever 33, and at this time, the other side of the lever 33. Push the piston rod 35 of the master cylinder 34 attached to it.

따라서 마스터 실린더(34)의 유압입 연결호스(36)를 통하여 릴리스 실린더(37)로 전달되고, 릴리스 실린더(37)의 피스톤 로드(38)가 차지밸브(21)의 피스톤(23)를 밀어 피스톤 로드(24)의 단부에 부착된 밸브(26)가 냉매통로(22)를 이탈하여 냉매 순환라인의 냉매를 외부로 배출시킨다.Therefore, the hydraulic inlet connection hose 36 of the master cylinder 34 is transferred to the release cylinder 37, and the piston rod 38 of the release cylinder 37 pushes the piston 23 of the charge valve 21 to the piston. The valve 26 attached to the end of the rod 24 leaves the refrigerant passage 22 to discharge the refrigerant of the refrigerant circulation line to the outside.

또한 냉매 순환라인(5)의 냉매가 적정수준을 유지되면 금속 다이어프램(11)에 가해진 압력이 줄어들어 압력감지 스위치(13)의 접점(12a, 12b)이 단락되어 솔레노이드(31)를 역동작시켜 상기의 역순으로 밸브(26)가 냉매통로(22)를 차단시킨다.In addition, when the refrigerant in the refrigerant circulation line 5 maintains an appropriate level, the pressure applied to the metal diaphragm 11 decreases, and the contacts 12a and 12b of the pressure sensing switch 13 are short-circuited to reversely operate the solenoid 31. In the reverse order of the valve 26, the refrigerant passage 22 shuts off.

이상에서 살펴본 바와 같이, 본 발명은 에어콘의 냉매 순환라인에 냉매가 과충된 경우 이를 즉시 외부로 배출시켜 적정량의 냉매로 냉각 사이클을 운전함으로써, 냉각 사이클이 각부 기기에 무리가 발생하여 기기가 손상되는 것을 방지하고, 냉각효율을 극대화시킬 수 있는 것이다.As described above, in the present invention, when the refrigerant is circulated in the refrigerant circulation line of the air conditioner by immediately discharging it to the outside to operate the cooling cycle with the appropriate amount of refrigerant, the cooling cycle is generated in each part of the equipment to damage the equipment It can prevent and maximize the cooling efficiency.

Claims (2)

냉매의 이상압력 발생을 감지하여 압력 감지 스위치를 작동시키는 압력 감지부와; 냉매 순환라인에 차지밸브를 설치하고, 차지밸브의 냉매통로에 피스톤 로드를 삽입시키되, 상기 피스톤 로드의 상단에 냉매통로 개폐용 밸브를 결합시키고, 피스톤의 상측에 설치되는 구조로 구성되어 있으며, 상기 냉매 순환라인상의 차지밸브를 열어 냉매를 배출시키는 냉매 배출부와, 압력 감지부의 릴레이와 솔레이노드를 접속하고, 솔레노이드를 피스톤 로드 작동시 연동되는 마스터 실린더를 설치하며, 마스터 실린더와 릴리스 실린더를 연결하여 솔레노이드의 동작으로 릴리스 실린더의 피스톤 로드가 차지밸브의 피스톤을 동작시키도록 구성되어 있으며, 상기 압력 감지부의 압력 감지 스의치의 작동으로 차지밸브를 개폐시키는 작동부로 이루어져 있는 것을 특징으로 하는 차량 에어콘의 냉매 과충전 방지장치.A pressure sensing unit for sensing an abnormal pressure generation of the refrigerant to operate a pressure sensing switch; The charge valve is installed in the refrigerant circulation line, the piston rod is inserted into the refrigerant passage of the charge valve, the refrigerant passage opening and closing valve is coupled to the upper end of the piston rod, and is configured to be installed on the upper side of the piston. Connect the refrigerant discharge part to open the charge valve on the refrigerant circulation line to discharge the refrigerant, connect the relay and the solenoid of the pressure sensing unit, and install the master cylinder to be connected to the solenoid when the piston rod is operated, and connect the master cylinder and the release cylinder. The piston rod of the release cylinder is configured to operate the piston of the charge valve by the operation of the solenoid, and the refrigerant of the vehicle air conditioner, characterized in that it consists of an operating part for opening and closing the charge valve by the operation of the pressure sensing switch of the pressure sensing unit. Overcharge protection. 제 1 항에 있어서, 상기 압력 감지부는 냉매 순환라인에 설치하고, 냉매 순환라인측에 금속 다이어프램을 설치하며, 금속 다이어프램의 후측에는 릴레이와 접속되는 압력 감지 스위치의 접점을 설치하여 구성한 것을 특징으로 하는 차량 에어콘의 냉매 과충전 방지장치.According to claim 1, wherein the pressure sensing unit is installed in the refrigerant circulation line, the metal diaphragm is installed on the refrigerant circulation line side, the rear side of the metal diaphragm, characterized in that configured by installing the contact of the pressure sensing switch connected to the relay. Refrigerant overcharge prevention device of vehicle air conditioner.
KR1019960053152A 1996-11-09 1996-11-09 Refrigerant over charge prevention apparatus of vehicle air-conditioner KR100251138B1 (en)

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