PROBLEM TO BE SOLVED: To improve the seal performance of a joined part between a power element and a body in an expansion valve.SOLUTION: The expansion valve according to one aspect includes: a power element 3 which has housings 26, 27 made of metal different from a body 2, and a drive part provided in the housings 26, 27 and generating driving force for opening and closing a valve element, the housings 26, 27 being fixed to seal an opening end of the body 2; a metal seal part 60 provided between the body 2 and the housing 27 and sealing the inside and outside by deformation of a metal; and an elastic seal part 62 sealing the inside and outside by interposing an O-ring 30 between the body 2 and the housing 27 so as to enclose the outside of the metal seal part 60.

    【課題】膨張弁におけるパワーエレメントとボディとの接合部のシール性能を高める。【解決手段】ある態様の膨張弁は、ボディ2とは異種金属からなるハウジング26,27と、ハウジング26,27内に設けられて弁体を開閉させるための駆動力を発生する駆動部とを有し、ハウジング26,27がボディ2の開口端部を封止するように固定されるパワーエレメント3と、ボディ2とハウジング27との間に設けられ、金属の変形により内外をシールするメタルシール部60と、メタルシール部60の外側を囲むようにボディ2とハウジング27との間にOリング30を介装することにより内外をシールする弾性シール部62と、を備える。【選択図】図3


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    Title :

    EXPANSION VALVE


    Additional title:

    膨張弁


    Contributors:

    Publication date :

    2015-06-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / 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 / F16K VALVES , Ventile



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