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    • 2. 发明专利
    • Cryogenic refrigerator
    • 低温冷冻机
    • JP2014035098A
    • 2014-02-24
    • JP2012175169
    • 2012-08-07
    • Sumitomo Heavy Ind Ltd住友重機械工業株式会社
    • MORIE TAKAAKIKYO MEIGYO
    • F25B9/14
    • F25B9/14F01B9/023F25B2309/001F25B2309/006F25B2309/14181F25B2309/1428F25B2400/073
    • PROBLEM TO BE SOLVED: To provide a cryogenic refrigerator improved in refrigeration efficiency.SOLUTION: A cryogenic refrigerator includes: displacers 11 and 21 that are reciprocably disposed within cylinders 10 and 20, respectively; a spool valve 9 that is connected to a compressor 6 and performs switching between an intake mode in which a high pressure refrigerant gas is supplied from the compressor 6 to the cylinders 10 and 20 and an exhaust mode in which a low pressure refrigerant gas in the cylinders 10 and 20 is made to flow back to the compressor 6; and a drive unit 3A that drives the spool valve 9. The spool valve 9 has a valve body 45, and a drive rod 37 that moves relative to the valve body 45 and is integrated with the spool. The drive unit 3A drives the spool valve so that the magnitude of a speed at which the drive rod 37 moves from a top dead center to a bottom dead center is different from the magnitude of a speed at which the drive rod 37 moves from the bottom dead center to the top dead center, at the same displacement position.
    • 要解决的问题:提供一种提高制冷效率的低温冰箱。解决方案:一种低温冰箱包括:分别位于气缸10和20内的可移动式11和21的置换器11和21。 连接到压缩机6并且在从压缩机6向气缸10和20供给高压制冷剂气体的进气模式之间进行切换的滑阀9以及在压缩机6中的低压制冷剂气体 使气缸10和20流回压缩机6; 以及驱动滑阀9的驱动单元3A。滑阀9具有阀体45和相对于阀体45移动并与阀芯一体化的驱动杆37。 驱动单元3A驱动滑阀,使得驱动杆37从上止点移动到下死点的速度的大小不同于驱动杆37从底部移动的速度的大小 死中心到上死点,处于相同位移位置。