KR970034540A - Refrigerant charge display device of automobile air conditioner - Google Patents

Refrigerant charge display device of automobile air conditioner Download PDF

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Publication number
KR970034540A
KR970034540A KR1019950046082A KR19950046082A KR970034540A KR 970034540 A KR970034540 A KR 970034540A KR 1019950046082 A KR1019950046082 A KR 1019950046082A KR 19950046082 A KR19950046082 A KR 19950046082A KR 970034540 A KR970034540 A KR 970034540A
Authority
KR
South Korea
Prior art keywords
air conditioner
refrigerant
logic circuit
charge amount
refrigerant charge
Prior art date
Application number
KR1019950046082A
Other languages
Korean (ko)
Other versions
KR0121097B1 (en
Inventor
이정헌
Original Assignee
박상록
주식회사 두원공조
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 박상록, 주식회사 두원공조 filed Critical 박상록
Priority to KR1019950046082A priority Critical patent/KR0121097B1/en
Publication of KR970034540A publication Critical patent/KR970034540A/en
Application granted granted Critical
Publication of KR0121097B1 publication Critical patent/KR0121097B1/en

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Classifications

    • 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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3248—Cooling devices information from a variable is obtained related to pressure
    • 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
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks
    • 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
    • F25B2500/23—High amount of refrigerant in the system
    • 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
    • F25B2500/24—Low amount of refrigerant in the system

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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

본 발명은 자동차의 공기조화기에서 냉매 불량에 의한 원인으로 냉방기가 작동하지 못하는 것을 자동차 내부에서 쉽게 인식할 수 있도록 한 자동차 공기조화기의 냉매충전량 표시회로에 관한 것으로써, 본 발명은 냉매가스의 압력에 따라 스위칭 동작이 제어되어 엔진 제어유니트로부터 냉방기의 온도 제어기로 이어지는 제어신호를 개폐하는 고저압 스위치를 구비한 공기조화기에 있어서, 상기 고저압 스위치의 양단에 걸리는 전압을 체크하여 공기조화기의 냉매 불량에 의한 원인을 감지하는 냉매 감지수단과, 상기 냉매 감지수단의 출력에 따라 점/소등 동작이 제어되어 그 감지상태를 표시하는 표시구동수단으로 구성되어 있다.The present invention relates to a refrigerant charge amount display circuit of an automobile air conditioner so that the air conditioner can be easily recognized inside a vehicle due to a refrigerant failure in an automobile air conditioner. An air conditioner having a high and low pressure switch for controlling a switching operation according to pressure to open and close a control signal from an engine control unit to a temperature controller of an air conditioner, wherein the voltage applied to both ends of the high and low pressure switch is checked. Refrigerant detection means for detecting the cause of the refrigerant failure and the display driving means for controlling the dot / off operation in accordance with the output of the refrigerant detection means to display the detection state.

Description

자동차 공기조화기의 냉매충전량 표시장치Refrigerant charge display device of automobile air conditioner

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 일반적인 자동차 공기조화기의 전체 구성을 간략하게 도시한 블럭도.1 is a block diagram schematically showing the overall configuration of a general automotive air conditioner.

제2도는 본 발명의 일실시예에 의한 자동차 공기조화기의 냉매충전량 표시장치의 상세회로도.2 is a detailed circuit diagram of a refrigerant charge display device of a vehicle air conditioner according to an embodiment of the present invention.

Claims (4)

엔진 제어유니트와 냉방기의 온도 제어기와의 연결단자를 냉매가스의 압력에 따라 개폐하는 고저압 스위치를 구비한 공기조화기에 있어서, 상기 고저압 스위치의 개폐상태를 체크하여 공기조화기의 냉매 불량에 의한 원인을 감지하는 냉매 감지수단(9)과, 상기 냉매 감지수단의 출력에 따라 점/소등 동작이 제어되어 그 감지상태를 표시하는 표시구동수단(10)으로 이루어진 것을 특징으로 하는 자동차 공기조화기의 냉매충전량 표시장치.An air conditioner having a high and low pressure switch that opens and closes a connection terminal between an engine control unit and a temperature controller of a cooler according to a refrigerant gas pressure. Refrigerant detecting means (9) for detecting the cause and the display driving means (10) characterized in that the dot / off operation is controlled in accordance with the output of the refrigerant detecting means to indicate the detection state of the automobile air conditioner Refrigerant charge amount display device. 제1항에 있어서, 상기 냉매 감지수단(9)은 상기 고저압 스위치의 양단에 걸리는 전압차를 검출하여 임의로 설정된 냉매가스 압력값을 경계로 고저압 스위치(4)가 개방되거나 단락되는 상태를 검출하는 배타적 논리회로(NR1)인 것을 특징으로 하는 자동차 공기조화기의 냉매충전량 표시회로.The method according to claim 1, wherein the refrigerant detecting means (9) detects a voltage difference across both ends of the high and low pressure switch, and detects a state in which the high and low pressure switch (4) is opened or shorted based on an arbitrarily set refrigerant gas pressure value. A refrigerant charge amount display circuit of a vehicle air conditioner, characterized in that the exclusive logic circuit (NR1). 제2항에 있어서, 상기 배타적 논리회로(NR1)는 고저압 스위치(4)와 엔진제어 유니트(7)내부의 풀 - 업저항(r1)에 걸리는 고전원단자와의 점검을 상기 배타적 논리회로(NR1)의 하나의 입력단자로 연결하고 상기 고저압 스위치(4)와 냉방기의 온도 제어기(8)로 이어지는 단자에 접지저항(R1)을 연결하고 상기 배타적 논리회로(NR1)의 다른 하나의 입력단자에 연결한 것을 특징으로 하는 자동차 공기조화기의 냉매충전량 표시회로.3. The exclusive logic circuit NR1 according to claim 2, wherein the exclusive logic circuit NR1 checks the high logic terminal applied to the high-low voltage switch 4 and the pull-up resistor r1 inside the engine control unit 7. Connect to one input terminal of NR1, connect ground resistance R1 to the terminal leading to the high and low voltage switch 4 and the temperature controller 8 of the air conditioner, and the other input terminal of the exclusive logic circuit NR1. Refrigerant charge amount display circuit of the vehicle air conditioner, characterized in that connected to. 제1항에 있어서, 상기 표시구동수단은 상기 배타적 논리회로(NR1)의 출력레벨에 따라 온/오프되는 트랜지스터(Q1)와, 상기 트랜지스터의 스위칭 동작에 따라 점등되거나 소등되는 발광소자(LED1)와, 전류제한용 저항(R2) (R3)으로 이루어진 것을 특징으로 하는 자동차 공기조화기의 냉매충전량 표시회로.2. The display device as claimed in claim 1, wherein the display driving means comprises: a transistor Q1 turned on / off according to the output level of the exclusive logic circuit NR1, a light emitting element LED1 turned on or off according to a switching operation of the transistor; Refrigerant charge amount display circuit of the vehicle air conditioner, characterized in that the current limiting resistor (R2) (R3). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950046082A 1995-12-01 1995-12-01 Display apparatus of airconditioning charging for automobile KR0121097B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950046082A KR0121097B1 (en) 1995-12-01 1995-12-01 Display apparatus of airconditioning charging for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950046082A KR0121097B1 (en) 1995-12-01 1995-12-01 Display apparatus of airconditioning charging for automobile

Publications (2)

Publication Number Publication Date
KR970034540A true KR970034540A (en) 1997-07-22
KR0121097B1 KR0121097B1 (en) 1997-11-10

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ID=19437386

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Application Number Title Priority Date Filing Date
KR1019950046082A KR0121097B1 (en) 1995-12-01 1995-12-01 Display apparatus of airconditioning charging for automobile

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Publication number Publication date
KR0121097B1 (en) 1997-11-10

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