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    • 2. 发明公开
    • PRESSURE REDUCING VALVE
    • 减压阀
    • EP3015942A2
    • 2016-05-04
    • EP15191477.7
    • 2015-10-26
    • JTEKT CORPORATIONToyota Jidosha Kabushiki Kaisha
    • SHIMA, ToshihikoIWAGUCHI, TakashiFUJIWARA, HidetoshiKUROYANAGI, MunetoshiKUBO, ToshikatsuOKAWACHI, EijiKONDO, MasaakiYAMASHITA, AkiraHAYASHI, Hidetsugu
    • G05D16/10
    • A valve element (12) of a pressure reducing valve includes a taper portion (23) seated on an inner periphery of a valve hole (31). The valve hole (31) includes a first area (33), a second area (34) and a third area (35) in order from an upstream side. The first area (33) is provided such that, when the valve element (12) is open, the height of a passage defined between the first area (33) and the taper portion (23) gradually reduces toward a downstream side. The second area (34) is provided such that the height of a passage defined between the second area (34) and the taper portion (23) is constant when the valve element (12) is open and the entire second area (34) contacts the taper portion (23) when the valve element (12) is closed. The third area (35) is provided such that, when the valve element (12) is open, the height of a passage defined between the third area (35) and the taper portion (23) gradually increases toward the downstream side.
    • 减压阀的阀体(12)具有位于阀孔(31)的内周的锥形部(23)。 阀孔(31)从上游侧开始依次包括第一区域(33),第二区域(34)和第三区域(35)。 第一区域33设置成使得当阀元件12打开时,限定在第一区域33和锥形部分23之间的通道的高度朝向下游侧逐渐减小。 第二区域34设置成使得当阀元件12打开并且整个第二区域34接触时限定在第二区域34和锥形部分23之间的通道的高度是恒定的 当阀元件(12)关闭时的锥形部分(23)。 第三区域35被设置为,在阀芯12打开时,第三区域35与锥形部23之间的流路的高度向下游侧逐渐增大。