CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR
- 申请公布号：
- JP2001317455(A)
- 申请号：
- JP20000137631
- 申请日期：
- 2000.05.10
- 申请公布日期：
- 2001.11.16
- 申请人：
- TOYOTA INDUSTRIES CORP;NOK CORP
- 发明人：
- MIZUFUJI TAKESHI;KIMURA KAZUYA;KAWAGUCHI MASAHIRO;OTA MASAKI;UMEMURA SATOSHI;TARUYA TOMOJI;KAMIMURA KUNISUKE;WATANABE YOSHIKI;TODOEN HIDEKI;FUKUNAGA HIDEJI
- 分类号：
- F04B49/00;F04B27/14;F04B27/18
- 主分类号：
- F04B49/00
- 摘要：
- PROBLEM TO BE SOLVED: To provide a control valve of a variable displacement compressor capable of reducing parts cost and adopting a pressure sensitive member easily incorporated into a valve housing. SOLUTION: A valve element part 43 adjusts opening of an air supply passage 28. The pressure sensitive member 54 forms a spherical shape, and comes into line contact with an inner peripheral surface 48a of a pressure sensitive chamber 48 in an annular ring-shaped area to partition the pressure sensitive chamber 48 into a first pressure chamber 55 and a second pressure chamber 56. Among two pressure monitoring points P1 and P2 set in a refrigerant circulating circuit, pressure PdH of the high pressure side first pressure monitoring point P1 is introduced to the first pressure chamber 55, and pressure PdL of the low pressure side second pressure monitoring point P2 is introduced to the second pressure chamber 56. The pressure sensitive member 54 is displaced according to differential pressure PdH-PdL between the two pressure monitoring points P1 and P2, and this displacement is reflected on positioning of the valve element part 43 so that delivery capacity of the compressor is changed to the side for offsetting a fluctuation in the differential pressure PdH-PdL.
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