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    • 26. 发明申请
    • CRYOGENIC REFRIGERATOR
    • 低温冷冻机
    • US20150285538A1
    • 2015-10-08
    • US14677235
    • 2015-04-02
    • Sumitomo Heavy Industries, Ltd.
    • Mingyao XuQian Bao
    • F25B9/14
    • F25B9/14F25B9/06F25B2309/14
    • In a cryogenic refrigerator, a displacer has an internal space in which refrigerant gas flows. A cylinder houses the displacer to enable the displacer to perform reciprocating movement and forms an expansion space of the refrigerant gas between the cylinder and a bottom surface of the displacer. The displacer supplies the refrigerant gas to the expansion space during movement inside the cylinder from a bottom dead center to a top dead center. The displacer collects the refrigerant gas from the expansion space during movement inside the cylinder from the top dead center to the bottom dead center. A flow path resistance between the displacer and the expansion space is lower when the displacer is at the bottom dead center than when the displacer is at the top dead center.
    • 在低温冰箱中,置换器具有制冷剂气体流动的内部空间。 气缸容纳置换器以使置换器能够进行往复运动,并且在气缸和置换器的底表面之间形成制冷剂气体的膨胀空间。 置换器在气缸内从下死点移动到上止点时将致冷剂气体供应到膨胀空间。 置换器在气缸内从上死点移动到下止点时从膨胀空间收集制冷剂气体。 当置换器处于下死点时,置换器和膨胀空间之间的流路阻力比置换器处于上止点时的流动阻力小。