KR20080040101A - Leakage detection device of refrigerant for automotive vehicles air conditioning system - Google Patents

Leakage detection device of refrigerant for automotive vehicles air conditioning system Download PDF

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Publication number
KR20080040101A
KR20080040101A KR1020060107631A KR20060107631A KR20080040101A KR 20080040101 A KR20080040101 A KR 20080040101A KR 1020060107631 A KR1020060107631 A KR 1020060107631A KR 20060107631 A KR20060107631 A KR 20060107631A KR 20080040101 A KR20080040101 A KR 20080040101A
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South Korea
Prior art keywords
refrigerant
air conditioning
conditioning system
joint
detection sheet
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KR1020060107631A
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Korean (ko)
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박성일
백영기
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한라공조주식회사
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Priority to KR1020060107631A priority Critical patent/KR20080040101A/en
Publication of KR20080040101A publication Critical patent/KR20080040101A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3225—Cooling devices using compression characterised by safety arrangements, e.g. compressor anti-seizure means or by signalling devices
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

An apparatus for detecting leakage of refrigerant in an air conditioning system of a vehicle is provided to allow a worker or a driver to rapidly fill the air conditioning system with the refrigerant when the refrigerant is leaked from the air conditioning system. An apparatus for detecting leakage of refrigerant comprises a detection sheet(70) and a color-change agent impregnated into the detection sheet. The detection sheet is installed at a joint section between pipe sections or a joint section between each pipe section and each device such that the detection sheet is visible to the naked eye of a driver or a worker. A color of the color-change agent is changed when refrigerant leaked from the joint section is in contact with the color-change agent. The detection sheet is provided at the joint section in the form of a gasket. The color-change agent includes BTB(bromothymol blue) solution.

Description

차량용 공조시스템의 냉매 누출 알림장치{LEAKAGE DETECTION DEVICE OF REFRIGERANT FOR AUTOMOTIVE VEHICLES AIR CONDITIONING SYSTEM}Refrigerant leak notification device for vehicle air conditioning system {LEAKAGE DETECTION DEVICE OF REFRIGERANT FOR AUTOMOTIVE VEHICLES AIR CONDITIONING SYSTEM}

도 1은 종래의 차량용 공조시스템을 개략적으로 나타내는 도면,1 is a view schematically showing a conventional vehicle air conditioning system,

도 2는 종래의 차량용 공조시스템에서 냉매의 압송을 위한 배관의 이음부를 상세하게 나타내는 분해 사시도,2 is an exploded perspective view showing in detail a joint of a pipe for pumping refrigerant in a conventional vehicle air conditioning system;

도 3은 본 발명에 따른 차량용 공조시스템의 냉매 누출 알림장치를 나타내는 분해사시도,3 is an exploded perspective view showing a refrigerant leak notification device of the vehicle air conditioning system according to the present invention;

도 4는 도 3의 결합 상태를 나타내는 사시도,4 is a perspective view illustrating a coupling state of FIG. 3;

도 5는 도 4의 Ⅴ-Ⅴ선 단면도,5 is a cross-sectional view taken along the line VV of FIG. 4;

도 6은 본 발명에 따른 냉매 누출 알림장치의 변형예를 나타내는 사시도,6 is a perspective view showing a modification of the refrigerant leak notification device according to the present invention;

도 7은 도 6의 Ⅶ-Ⅶ선 단면도이다.FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6.

♣ 도면의 주요부분에 대한 부호의 설명 ♣ ♣ Explanation of symbols for main part of drawing ♣

10: 압축기 20: 가스쿨러(Gas Cooler)10: compressor 20: gas cooler

30: 팽창밸브 40: 증발기30: expansion valve 40: evaporator

50: 배관 52: 제 1이음관부50: pipe 52: first joint portion

54: 제 2이음관부 55: 이음부54: second joint portion 55: joint portion

60: 플랜지 이음장치 62: 제 1플랜지(Flange)60: flange joint 62: the first flange (Flange)

64: 제 2플랜지(Flange) 70: 검출시트(Sheet)64: second flange (Flange) 70: detection sheet (Sheet)

본 발명은 차량용 공조시스템의 냉매 누출 알림장치에 관한 것으로서, 보다 상세하게는, 시스템 내부로부터의 냉매가 누출되는 것을 운전자에게 알려주는 차량용 공조시스템의 냉매 누출 알림장치에 관한 것이다.The present invention relates to a refrigerant leak notification device for a vehicle air conditioning system, and more particularly, to a refrigerant leak notification device for a vehicle air conditioning system for informing the driver of the refrigerant leak from the inside of the system.

최근 들어, 자연냉매를 사용하는 차량용 공조시스템이 다양하게 개발되고 있다. 특히, 이산화탄소(CO2)를 냉매로 사용하는 이산화탄소 공조시스템이 주목받고 있다.Recently, various air conditioning systems for vehicles using natural refrigerants have been developed. In particular, a carbon dioxide air conditioning system using carbon dioxide (CO 2 ) as a refrigerant has attracted attention.

이산화탄소 공조시스템은, 오존파괴지수가 제로이고 지구온난화지수도 아주 낮은 이산화탄소(CO2)를 냉매로 사용하므로, 오존층의 파괴를 줄일 수 있고, 지구 온난화를 방지할 수 있는 등 최근 들어 각광받고 있는 친환경 공조시스템이다.The carbon dioxide air conditioning system uses carbon dioxide (CO 2 ) as a refrigerant with zero ozone depletion index and very low global warming index, thus reducing the destruction of the ozone layer and preventing global warming. It is an air conditioning system.

이러한 이산화탄소 공조시스템은, 도 1에 도시된 바와 같이, 냉매를 고온·고압의 가스로 압축하는 압축기(10)와, 압축된 고온·고압의 냉매를 외부 공기와 열교환시키는 가스쿨러(20)와, 열교환된 고압 냉매를 저온·저압으로 팽창시키는 팽창밸브(30)와, 팽창된 저온·저압의 냉매를 유입한 후, 주위의 공기와 열교환시키는 증발기(40) 및 이들 각각의 장치들을 연결하는 배관(50)들을 포함한다.As shown in FIG. 1, the carbon dioxide air conditioning system includes a compressor 10 for compressing a refrigerant into a gas of high temperature and high pressure, a gas cooler 20 for exchanging the compressed high temperature and high pressure refrigerant with external air, Expansion valve 30 for expanding the heat-exchanged high-pressure refrigerant to low temperature and low pressure, the evaporator 40 for introducing heat to the expanded low-temperature and low pressure refrigerant, and heat exchange with the surrounding air, and pipes connecting the respective devices ( 50).

한편, 배관(50)은, 작동압력이 매우 높은 고압의 이산화탄소 냉매를 압송해 야 하므로, 높은 내압성을 가져야 한다. 특히, 배관(50)들간의 이음부 및 배관(50)과 각 장치간의 이음부는 냉매의 누출에 취약한 부분이므로, 높은 기밀성과 내압성을 유지하는 고내압성 이음장치로 이음해야 한다.On the other hand, the pipe 50 has to pressurize the carbon dioxide refrigerant of a high pressure with a very high operating pressure, it must have a high pressure resistance. In particular, the joints between the pipes 50 and the joints between the pipe 50 and each device are vulnerable to leakage of the refrigerant, and thus, the joints between the pipes 50 and the apparatus 50 must be joined by a high pressure-resistant joint that maintains high airtightness and pressure resistance.

고내압성 이음장치의 일례로서, 도 2에 도시된 바와 같이, 플랜지 이음장치(60)가 있다. 플랜지 이음장치(60)는 한쪽의 제 1이음관부(52)에 설치되는 제 1플랜지(62)와, 다른 쪽의 제 2이음관부(54)에 설치되는 제 2플랜지(64)와, 제 1플랜지(62)와 제 2플랜지(64)를 체결하는 체결수단, 예를 들면, 볼트(66)와 너트(67)로 구성된다.As an example of the high pressure resistant joint, there is a flange joint 60, as shown in FIG. The flange joint device 60 includes a first flange 62 installed on one first joint pipe portion 52, a second flange 64 mounted on the second second joint pipe portion 54, and a first flange 62. It consists of a fastening means for fastening the flange 62 and the second flange 64, for example, a bolt 66 and a nut 67.

이러한 플랜지 이음장치(60)는, 넓은 면적의 제 1플랜지(62)와 제 2플랜지(64)가 서로 체결되는 구조이므로, 제 1이음관부(52)와 제 2이음관부(54)를 높은 기밀도로 연결하며, 따라서, 제 1이음관부(52)와 제 2이음관부(54)를 따라 압송되는 고압의 냉매가 상기 이음부(55)로 누출되는 것을 방지한다. 한편, 경우에 따라 제 1플랜지(62)와 제 2플랜지(64)의 사이에는 기밀성을 증강시키기 위해 가스켓이 더 설치되기도 한다.Since the flange joint 60 has a structure in which the first flange 62 and the second flange 64 having a large area are fastened to each other, the first joint pipe part 52 and the second joint pipe part 54 have high airtightness. It is connected to the road, and thus prevents the high pressure refrigerant pumped along the first joint portion 52 and the second joint portion 54 from leaking into the joint portion 55. In some cases, a gasket may be further installed between the first flange 62 and the second flange 64 to enhance airtightness.

그런데, 이러한 종래의 공조시스템은, 시스템 내부의 압력이 매우 높으므로, 이음부(55)에서 이산화탄소 냉매가 조금씩 누출되는 단점이 있다. 특히, 외부의 충격이 이음부(55)에 가해질 경우에는, 상기 이음부(55)에 미세한 틈새가 발생되는데, 이렇게 발생된 미세 틈새로 냉매가 누출된다는 문제점이 있다.However, such a conventional air conditioning system has a disadvantage in that carbon dioxide refrigerant leaks little by little from the joint part 55 because the pressure inside the system is very high. In particular, when an external impact is applied to the joint part 55, a fine gap is generated in the joint part 55, and there is a problem in that the refrigerant leaks into the fine gap thus generated.

한편, 시스템 내부로부터 냉매가 누출되면, 냉매의 누출여부를 확인할 방법이 없으며, 이러한 문제점 때문에 시스템 내부에 냉매 부족현상이 발생되고, 이러 한 냉매 부족현상 때문에 시스템의 성능과 효율이 저하된다는 문제점이 있다.On the other hand, when the refrigerant leaks from the inside of the system, there is no way to check whether the refrigerant leaks, due to this problem there is a problem that the refrigerant shortage occurs inside the system, due to such a refrigerant shortage phenomenon that the performance and efficiency of the system is deteriorated. .

본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출된 것으로서, 그 목적은, 시스템 내부로부터 냉매가 누출되는 것을 운전자 및 작업자에게 알려주는 차량용 공조시스템의 냉매 누출 알림장치를 제공하는 데 있다.The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to provide a refrigerant leak notification device for a vehicle air conditioning system for informing the driver and operator that the refrigerant leaks from the inside of the system.

본 발명의 다른 목적은, 시스템 내부로부터의 냉매 누출을 운전자 및 작업자에게 알려줌으로써, 냉매 누출 부분을 신속하게 수리 및 교정할 수 있도록 하고, 부족한 냉매를 시스템 내부에 신속히 충전할 수 있도록 하는 차량용 공조시스템의 냉매 누출 알림장치를 제공하는 데 있다.Another object of the present invention is to provide a driver and operator with a leak of refrigerant from the inside of the system, so that the refrigerant leak portion can be repaired and corrected quickly, and the vehicle air conditioning system to quickly fill the insufficient refrigerant into the system To provide a refrigerant leak notification device of.

이러한 목적을 달성하기 위하여 본 발명은, 압축기와 가스쿨러와 팽창밸브와 증발기 및 이들 각각의 장치들을 연결하는 배관을 포함하며, 이산화탄소(CO2)를 냉매로 사용하는 차량용 공조시스템에 있어서, 상기 배관들의 이음부 및 상기 배관과 각 장치간의 이음부에 육안으로 확인할 수 있도록 설치되는 검출시트와; 상기 이음부에서 누출되는 냉매와 접촉되면서 변색될 수 있도록 상기 검출시트에 함침(含浸)되는 변색제를 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention includes a compressor, a gas cooler, an expansion valve, an evaporator, and a pipe connecting the respective devices, and in a vehicle air conditioning system using carbon dioxide (CO 2 ) as a refrigerant, the pipe A detection sheet installed to visually check the joint between the joint and the joint between the pipe and each device; It characterized in that it comprises a color change agent (검출) impregnated in the detection sheet to be discolored in contact with the refrigerant leaking from the joint.

바람직하게는, 상기 검출시트는, 상기 이음부의 사이에 가스켓 형태로 설치되거나, 또는 상기 이음부를 감싸도록 상기 이음부 둘레에 감아지는 것을 특징으로 한다.Preferably, the detection sheet is installed in the form of a gasket between the joint portion, or wound around the joint portion to surround the joint portion.

그리고 상기 변색제는, 누출된 냉매와 접촉하면서 황색 또는 녹색으로 변화되는 BTB 용액이거나 또는 누출된 냉매와 접촉하면서 흰색으로 변화되는 수산화칼슘수용액인 것을 특징으로 한다.And the color change agent is characterized in that the BTB solution is changed to yellow or green while in contact with the leaked refrigerant or the calcium hydroxide aqueous solution is changed to white in contact with the leaked refrigerant.

이하, 본 발명에 따른 차량용 공조시스템의 냉매 누출 알림장치의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명한다(종래와 동일한 구성요소는 동일한 부호를 사용하여 설명한다).DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a refrigerant leak notification device of a vehicle air conditioning system according to the present invention will be described in detail with reference to the accompanying drawings (the same components will be described with the same reference numerals).

도 3은 본 발명에 따른 차량용 공조시스템의 냉매 누출 알림장치를 나타내는 분해사시도이고, 도 4는 도 3의 결합 상태를 나타내는 사시도이며, 도 5는 도 4의 Ⅴ-Ⅴ선 단면도이다.3 is an exploded perspective view showing a refrigerant leak notification device of the vehicle air conditioning system according to the present invention, Figure 4 is a perspective view showing a coupling state of Figure 3, Figure 5 is a cross-sectional view taken along the line V-V of FIG.

먼저, 본 발명의 냉매 누출 알림장치는, 도 3 내지 도 5에 도시된 바와 같이, 배관(50)들의 이음부(55)에 설치되는 검출시트(70)를 구비한다.First, the refrigerant leak notification device of the present invention, as shown in Figures 3 to 5, is provided with a detection sheet 70 is installed on the joint portion 55 of the pipes (50).

검출시트(70)는, 종이재질로 구성되며, 이음부(55)의 제 1이음관부(52)와 제 2이음관부(54) 사이에 배치된다. 특히, 제 1이음관부(52)의 제 1플랜지(62)와 제 2이음관부(54)의 제 2플랜지(64)의 사이에 가스켓의 형태로 배치되며, 그 둘레부분이 제 1플랜지(62)와 제 2플랜지(64) 사이의 외측으로 노출되어 육안으로 확인할 수 있게 구성된다.The detection sheet 70 is made of a paper material, and is disposed between the first joint portion 52 and the second joint portion 54 of the joint portion 55. In particular, the first flange 62 of the first joint portion 52 and the second flange 64 of the second joint portion 54 is disposed in the form of a gasket, the peripheral portion of the first flange 62 And exposed to the outside between the second flange 64 is configured to be visible with the naked eye.

이러한 검출시트(70)는, 제 1이음관부(52)의 제 1플랜지(62)와 제 2이음관부(54)의 제 2플랜지(64)의 사이에 배치되므로, 제 1이음관부(52)와 제 2이음관부(54)의 사이에서 이산화탄소의 냉매가 누출되면, 누출된 이산화탄소의 냉매와 접촉한다.Since the detection sheet 70 is disposed between the first flange 62 of the first joint pipe part 52 and the second flange 64 of the second joint pipe part 54, the first joint pipe part 52 is disposed. When the refrigerant of carbon dioxide leaks between the second joint pipe part 54 and the refrigerant, the refrigerant leaks into contact with the leaked carbon dioxide.

한편, 이러한 검출시트(70)는, 제 1플랜지(62)와 제 2플랜지(64)의 기밀성을 저하시키지 않도록 매우 얇고 고밀도로 구성된다. 그리고 검출시트(70)는, 배관(50)들의 이음부(55) 뿐만이 아니라, 배관(50)과 각 장치간의 이음부는 물론, 냉매가 누출될만한 곳이면, 어느 곳이든 설치가능하다.On the other hand, the detection sheet 70 is composed of very thin and high density so as not to lower the airtightness of the first flange 62 and the second flange 64. In addition to the joints 55 of the pipes 50, the detection sheet 70 may be installed anywhere where the refrigerant may leak, as well as the joints between the pipe 50 and each device.

다시, 도 2 내지 도 5를 참조하면, 본 발명의 냉매 누출 알림장치는, 이음부(55)에서 누출되는 냉매에 의해 변색될 수 있도록 상기 검출시트(70)에 함침(含浸)되어 있는 변색제(도시하지 않음)를 구비한다.2 to 5 again, the refrigerant leak notification device of the present invention, the colorant impregnated in the detection sheet 70 to be discolored by the refrigerant leaked from the joint 55 (Not shown).

변색제는, BTB 용액으로 구성되며, 이음부(55)에서 이산화탄소 냉매가 누출되면, 누출된 이산화탄소 냉매와 접촉하면서 황색 또는 녹색으로 변화된다. 참고로, BTB 용액은, 물질의 산도(酸度), 즉 Ph를 측정하는 지시약으로서, 산성도가 낮은 이산화탄소와 접촉할 경우에는, 녹색으로 변색되고, 산성도가 높은 이산화탄소와 접촉할 경우에는 황색으로 변색되는 특징을 갖는다.The color change agent is composed of a BTB solution, and when the carbon dioxide refrigerant leaks from the joint 55, the color change agent turns yellow or green while contacting the leaked carbon dioxide refrigerant. For reference, the BTB solution is an indicator for measuring the acidity, or Ph, of a substance, which turns green when it comes into contact with carbon dioxide having a low acidity and yellow when it comes into contact with carbon dioxide having a high acidity. Has characteristics.

한편, 변색제를 수산화칼슘수용액로 구성할 수도 있다. 이러한 수산화칼슘수용액은, 상기 이음부(55)에서 이산화탄소 냉매가 누출되면, 누출된 이산화탄소 냉매와 접촉하면서 흰색으로 변색된다. 참고로, 수산화칼슘수용액(석회수)은, 이산화탄소와 반응하여 흰색 앙금을 생성하는 특징을 갖는다.In addition, a color change agent can also be comprised with aqueous solution of calcium hydroxide. When the carbon dioxide aqueous solution leaks from the joint 55, the calcium hydroxide aqueous solution discolors in white while contacting the leaked carbon dioxide refrigerant. For reference, an aqueous calcium hydroxide solution (lime water) is characterized by reacting with carbon dioxide to produce a white sediment.

이러한 구성의 변색제는, 검출시트(70)에 함침된 상태에서, 이음부(55)에서 이산화탄소 냉매가 누출되면, 누출된 이산화탄소 냉매와 접촉하면서 변색됨으로써, 운전자 및 작업자에게 시스템의 이음부(55)에서 냉매가 누출된다는 것을 알려준다.When the color change agent having such a configuration, in the state impregnated in the detection sheet 70, when the carbon dioxide refrigerant leaks from the joint portion 55, the color change agent is discolored while contacting the leaked carbon dioxide refrigerant, to the driver and operator of the joint portion 55 of the system ), The refrigerant is leaking.

따라서, 운전자 및 작업자로 하여금 냉매가 누출된 이음부(55)를 신속히 수 리 및 교정할 수 있게 하고, 아울러 냉매의 누출로 인해 냉매의 부족부분을 시스템 내부로 신속히 보충 공급할 수 있게 하며, 이에 따라 냉매의 부족으로 인한 공조시스템의 성능과 효율 저하를 방지한다.Therefore, it is possible for the operator and the operator to quickly repair and correct the leaked joint 55, and also to quickly replenish the shortage of the refrigerant due to the leakage of refrigerant into the system, thereby It prevents the deterioration of the air conditioning system's performance and efficiency due to lack of refrigerant.

다음으로, 도 6과 도 7에는 본 발명에 따른 냉매 누출 알림장치의 변형예를 나타내는 도면이 도시되어 있다.Next, Figures 6 and 7 are views showing a modification of the refrigerant leak notification device according to the present invention.

변형예의 냉매 누출 알림장치는, 검출시트(70)가 가늘고 긴 테이프 형태로 구성되며, 상기 검출시트(70)는 이음부(55)의 틈새를 감싸도록 이음부(55) 둘레에 감아지는 구성을 갖는다. 이때, 검출시트(70)에는 변색제가 함침되어 있음은 물론이다.Refrigerant leak notification device of the modification, the detection sheet 70 is configured in the form of a long thin tape, the detection sheet 70 has a configuration that is wound around the joint portion 55 to surround the gap of the joint portion 55 Have At this time, of course, the detection sheet 70 is impregnated with a color change agent.

이러한 변형예의 냉매 누출 알림장치는, 검출시트(70)가 이음부(55)를 감싸고 있으므로, 이음부(55)에서 냉매가 누출되면, 검출시트(70)에 함침된 변색제가 상기 냉매와 접촉하면서 변색된다. 따라서, 이음부(55)에서의 냉매누출여부를 운전자 및 작업자가 인지할 수 있게 된다.In the refrigerant leak notification device of this modified example, since the detection sheet 70 surrounds the joint 55, when the refrigerant leaks from the joint 55, the colorant impregnated in the detection sheet 70 comes into contact with the refrigerant. Discoloration. Accordingly, the driver and the operator can recognize whether the refrigerant leaked from the joint 55.

이러한 변형예의 냉매 누출 알림장치는, 가늘고 긴 테이프 형태의 검출시트(70)를 이음부(55) 둘레에 감는 구성이므로, 별도의 공구없이도 쉽고 간편하며 빠르게 설치할 수 있다. 따라서, 작업성이 매우 좋은 특징을 갖는다.Refrigerant leak notification device of this modification, because the configuration is wound around the joint portion 55, the detection sheet 70 in the form of a long tape, can be installed easily, simply and quickly without a separate tool. Therefore, workability is very good.

이상에서는 본 발명의 바람직한 실시예를 예시적으로 설명하였으나, 본 발명의 범위는 이와 같은 특정 실시예에만 한정되는 것은 아니며, 특허청구범위에 기재된 범주내에서 적절하게 변경 가능한 것이다.Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope of the claims.

이상에서 설명한 바와 같이, 본 발명에 따른 차량용 공조시스템의 냉매 누출 알림장치에 의하면, 냉매의 누출여부를 운전자에게 알려주므로, 냉매 누출 부분을 신속하게 수리할 수 있게 하며, 냉매의 누출로 인해 냉매의 부족부분을 시스템 내부로 신속히 보충 공급할 수 있게 한다. 따라서, 냉매의 부족으로 인한 공조시스템의 성능과 효율 저하를 미연에 방지할 수 있는 효과가 있다.As described above, according to the refrigerant leak notification device of the vehicle air conditioning system according to the present invention, it informs the driver whether the refrigerant leaks, it is possible to quickly repair the refrigerant leak portion, due to the refrigerant leakage of the refrigerant Allows for short supply of shortages into the system. Therefore, there is an effect that can prevent the degradation of the performance and efficiency of the air conditioning system due to the lack of refrigerant.

Claims (5)

압축기(10)와 가스쿨러(20)와 팽창밸브(30)와 증발기(40) 및 이들 각각의 장치들을 연결하는 배관(50)을 포함하며, 이산화탄소(CO2)를 냉매로 사용하는 차량용 공조시스템에 있어서,A vehicle air conditioning system including a compressor (10), a gas cooler (20), an expansion valve (30), an evaporator (40), and a pipe (50) connecting the respective devices, and using carbon dioxide (CO 2 ) as a refrigerant. To 상기 배관(50)들의 이음부 및 상기 배관(50)과 각 장치간의 이음부에 육안으로 확인할 수 있도록 설치되는 검출시트(70)와;A detection sheet 70 installed to visually check the joints of the pipes 50 and the joints between the pipes 50 and each device; 상기 이음부에서 누출되는 냉매와 접촉되면서 변색될 수 있도록 상기 검출시트(70)에 함침(含浸)되는 변색제를 포함하는 것을 특징으로 하는 차량용 공조시스템의 냉매 누출 알림장치.Refrigerant leak notification device for a vehicle air conditioning system, characterized in that it comprises a color change impregnated in the detection sheet (70) to be discolored in contact with the refrigerant leaking from the joint. 제 1항에 있어서,The method of claim 1, 상기 검출시트(70)는, 상기 이음부의 사이에 가스켓 형태로 설치되는 것을 특징으로 하는 차량용 공조시스템의 냉매 누출 알림장치.The detection sheet (70), refrigerant leak notification device of the vehicle air conditioning system, characterized in that installed in the form of a gasket between the joint. 제 1항에 있어서,The method of claim 1, 상기 검출시트(70)는, 상기 이음부를 감싸도록 상기 이음부 둘레에 감아지는 것을 특징으로 하는 차량용 공조시스템의 냉매 누출 알림장치.The detection sheet (70), the refrigerant leak notification device of the vehicle air conditioning system, characterized in that wound around the joint to surround the joint. 제 1항 내지 제 3항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 변색제는, 누출된 냉매와 접촉하면서 황색 또는 녹색으로 변화되는 BTB 용액인 것을 특징으로 하는 차량용 공조시스템의 냉매 누출 알림장치.The color change agent, the refrigerant leak notification device of a vehicle air conditioning system, characterized in that the BTB solution is changed to yellow or green while in contact with the leaked refrigerant. 제 1항 내지 제 3항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 변색제는, 누출된 냉매와 접촉하면서 흰색으로 변화되는 수산화칼슘수용액인 것을 특징으로 하는 차량용 공조시스템의 냉매 누출 알림장치.The color change agent, the refrigerant leak notification device for a vehicle air conditioning system, characterized in that the aqueous solution of calcium hydroxide is changed to white in contact with the leaked refrigerant.
KR1020060107631A 2006-11-02 2006-11-02 Leakage detection device of refrigerant for automotive vehicles air conditioning system KR20080040101A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014109605A1 (en) * 2013-01-10 2014-07-17 주식회사 사람들 Vacuum-pipe connecting member able to detect whether there is a leak
KR101947310B1 (en) * 2018-02-01 2019-02-12 박지은 Modification method to solve leakage problem caused by deformation of diaphragm plate of high pressure gas cooler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014109605A1 (en) * 2013-01-10 2014-07-17 주식회사 사람들 Vacuum-pipe connecting member able to detect whether there is a leak
US10001233B2 (en) 2013-01-10 2018-06-19 Saramdle Co., Ltd. Vacuum-pipe connecting member for detecting gas leak
KR101947310B1 (en) * 2018-02-01 2019-02-12 박지은 Modification method to solve leakage problem caused by deformation of diaphragm plate of high pressure gas cooler

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