To provide an improved expansion valve which can achieve low costs and low noise.SOLUTION: An expansion valve includes: a valve body 2 including an annular valve seat 20; a valve element 3 which is seated on the valve seat 20 to block passage of a fluid and separates from the valve seat 20 to allow passage of the fluid; a coil spring 41 which is disposed in a valve chamber VS with its side surface facing flow of the fluid flowing from a supply side passage 21 and biases the valve element 3 toward the valve seat 20; a valve element support 42 disposed between the valve element 3 and one end of the coil spring 41; and a spring receiving member 43 attached to the valve body 2 and including a bottom part 43a which holds the other end of the coil spring 41 and an inner cylinder part 43f extending from the bottom part 43a in an axial direction along an inner periphery of the coil spring 41. When a connection passage 21a is projected from the supply side passage 21 to a side surface of the inner cylinder part 43f of the spring receiving member 43, the inner cylinder part 43f of the spring receiving member 43 overlaps with at least a part of the projected connection passage 21a.SELECTED DRAWING: Figure 2

    【課題】低コストであり且つ低騒音を実現できる、改良された膨張弁を提供する。【解決手段】膨張弁は、環状の弁座20を備えた弁本体2と、弁座20に着座することにより流体の通過を阻止し、弁座20から離間することにより流体の通過を許容する弁体3と、供給側流路21から流入する流体の流れに対して側面を向けて弁室VSに配置され、弁体3を弁座20に向かって付勢するコイルばね41と、弁体3とコイルばね41の一端との間に配置された弁体サポート42と、弁本体2に取り付けられ、コイルばね41の他端を保持する底部43aと、底部43aからコイルばね41の内周に沿って軸線方向に延在する内側筒部43fと、を備えたばね受け部材43と、を有し、供給側流路21からばね受け部材43の内側筒部43fの側面に向けて、接続路21aを投影した場合に、ばね受け部材43の内側筒部43fは、投影した接続路21aの少なくとも一部と重なっている。【選択図】図2


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    Titel :

    EXPANSION VALVE


    Weitere Titelangaben:

    膨張弁


    Beteiligte:
    KUBOTA KOHEI (Autor:in) / HAYAKAWA JUNYA (Autor:in) / MOGI TAKASHI (Autor:in) / MATSUDA AKIRA (Autor:in)

    Erscheinungsdatum :

    2019-09-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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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