JPS55148611A - Air conditioner for automobile - Google Patents

Air conditioner for automobile

Info

Publication number
JPS55148611A
JPS55148611A JP5789679A JP5789679A JPS55148611A JP S55148611 A JPS55148611 A JP S55148611A JP 5789679 A JP5789679 A JP 5789679A JP 5789679 A JP5789679 A JP 5789679A JP S55148611 A JPS55148611 A JP S55148611A
Authority
JP
Japan
Prior art keywords
pressure
temperature
refrigerant leakage
automobile
detected
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP5789679A
Other languages
Japanese (ja)
Inventor
Makoto Tsuchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5789679A priority Critical patent/JPS55148611A/en
Publication of JPS55148611A publication Critical patent/JPS55148611A/en
Pending legal-status Critical Current

Links

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

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE:To enable a driver in an automobile easily to find out refrigerant leakage by preparing a refrigerant leakage alarm therein. CONSTITUTION:The pressure in a refrigerating cycle is sensed by a pressure sensing element 2 and detected by a pressure detecting circuit 1. At a pressure-temperature conversion circuit 3 the detected pressure is converted into temperature through the conversion coefficients which have previously been determined by refrigerating cycle volume, normal refrigerant volume, etc. On the other hand, the surrounding temperature of the refrigerating cycle is detected by a heat-sensitive device 4, a temperature detecting circuit 5, and is compared with the temperature converted from the pressure through a comparative circuit 6. If some refrigerant leakage occurs a warning is given by a warning oscillation circuit 7 and an alarm 8 fixed in the automobile. In this way, the refrigerant leakage can easily be found out at the driver seat.
JP5789679A 1979-05-11 1979-05-11 Air conditioner for automobile Pending JPS55148611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5789679A JPS55148611A (en) 1979-05-11 1979-05-11 Air conditioner for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5789679A JPS55148611A (en) 1979-05-11 1979-05-11 Air conditioner for automobile

Publications (1)

Publication Number Publication Date
JPS55148611A true JPS55148611A (en) 1980-11-19

Family

ID=13068739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5789679A Pending JPS55148611A (en) 1979-05-11 1979-05-11 Air conditioner for automobile

Country Status (1)

Country Link
JP (1) JPS55148611A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044168A (en) * 1990-08-14 1991-09-03 Wycoff Lyman W Apparatus and method for low refrigerant detection
US5150584A (en) * 1991-09-26 1992-09-29 General Motors Corporation Method and apparatus for detecting low refrigerant charge
US5186014A (en) * 1992-07-13 1993-02-16 General Motors Corporation Low refrigerant charge detection system for a heat pump
FR2715214A1 (en) * 1994-01-19 1995-07-21 Daimler Benz Ag Method for controlling the refrigerant filling state of a refrigerating plant
US5649429A (en) * 1995-07-03 1997-07-22 Mercedes-Benz Ag Air conditioner for a motor vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044168A (en) * 1990-08-14 1991-09-03 Wycoff Lyman W Apparatus and method for low refrigerant detection
US5150584A (en) * 1991-09-26 1992-09-29 General Motors Corporation Method and apparatus for detecting low refrigerant charge
US5186014A (en) * 1992-07-13 1993-02-16 General Motors Corporation Low refrigerant charge detection system for a heat pump
FR2715214A1 (en) * 1994-01-19 1995-07-21 Daimler Benz Ag Method for controlling the refrigerant filling state of a refrigerating plant
US5649429A (en) * 1995-07-03 1997-07-22 Mercedes-Benz Ag Air conditioner for a motor vehicle

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