The present invention relates to a check valve of a variable capacity compressor for a vehicle. In the present invention, a pair of combination grooves are formed on both sides on the bottom of a valve case. A valve sheet has a pair of combination bumps which are inserted into and fixated on the pair of combination grooves. The valve sheet comprises: a first bypass groove which is formed on top in the center of the combination bump; and a second bypass groove which is formed on an external side surface of the combination bump. Therefore, there is a path which is always bypassed whether a spool valve works or not. Thus, a part of the refrigerant inflow pressure is discharged through the first bypass groove and the second bypass groove, and the load of an elastic member and the transfer load of the refrigerant inflow pressure are changed. Accordingly, valve noise, which is generated between the valve case and the spool valve when a refrigerant flows in as the spool valve is initially opened, can be reduced. The check valve of the present invention comprises: a valve case; a spool valve; an elastic member; and a valve sheet.

    본 발명은 차량용 가변용량 압축기의 체크밸브를 개시한 것으로, 이러한 본 발명은 밸브케이스의 하부 양측에 한 쌍의 결합홈을 형성하고, 밸브시트는 상기 한 쌍의 결합홈에 끼워져 고정되는 한 쌍의 결합돌기를 가지되, 상기 밸브시트는 상기 결합돌기의 중앙 상측에 형성되는 제1 바이패스홈과 상기 제1 바이패스홈과 연결되도록 상기 결합돌기의 외측면에 형성되는 제2 바이패스홈을 포함하여 스풀밸브의 작동여부와 상관없이 항상 바이패스되는 통로를 만들어줌으로써, 냉매유입압력의 일부가 제1 및 제2 바이패스홈을 통해 배출되어 탄성부재의 하중과 냉매유입압력의 인계하중을 변경하여 스풀밸브의 초기 열림으로부터 냉매 유입시 밸브케이스와 스풀밸브 사이에서 발생되는 밸브소음을 줄일 수 있도록 한 것이다.


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    Title :

    Check valve of variable capacity compressor vehicle


    Additional title:

    차량용 가변용량 압축기의 체크밸브


    Contributors:
    KIM KI YOEN (author)

    Publication date :

    2017-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS



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