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公开(公告)号：US20140290277A1
公开(公告)日：2014-10-02
申请号：US14226188
申请日：2014-03-26
发明人： Koji Yamada
IPC分类号： F25B9/14
CPC分类号： F25B9/14 , F17C2227/0353 , F25B9/06 , F25B9/12
摘要： A cryogenic refrigerator includes a compressor which compresses a working gas, a housing which includes a space which the working gas compressed by the compressor flows into and flows from, a cylinder of which an end is connected to the housing and which includes an expansion space at the other end, and a displacer which permits flowing of the working gas into and from the expansion space via a working gas channel provided in an inner portion of the displacer while reciprocating in an inner portion of the cylinder. The working gas flows through a pipe which communicates with the space and the working gas channel.
摘要翻译： 一种低温冰箱包括压缩工作气体的压缩机，包括由压缩机压缩的工作气体流入并流动的空间的壳体，其一端连接到壳体并且包括一个膨胀空间 另一端，以及置换器，其允许工作气体经由设置在置换器的内部中的工作气体通道在膨胀空间中流动，同时在气缸的内部部分中往复运动。 工作气体通过与空间和工作气体通道连通的管道。
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公开(公告)号：US09759455B2
公开(公告)日：2017-09-12
申请号：US14226188
申请日：2014-03-26
发明人： Koji Yamada
CPC分类号： F25B9/14 , F17C2227/0353 , F25B9/06 , F25B9/12
摘要： A cryogenic refrigerator includes a compressor which compresses a working gas, a housing which includes a space which the working gas compressed by the compressor flows into and flows from, a cylinder of which an end is connected to the housing and which includes an expansion space at the other end, and a displacer which permits flowing of the working gas into and from the expansion space via a working gas channel provided in an inner portion of the displacer while reciprocating in an inner portion of the cylinder. The working gas flows through a pipe which communicates with the space and the working gas channel.
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公开(公告)号：US09322271B2
公开(公告)日：2016-04-26
申请号：US13755260
申请日：2013-01-31
发明人： Koji Yamada
摘要： A disclosed cryogenic refrigerator includes a cylinder, a displacer reciprocally moving inside the cylinder, and an elastic unit which is provided in at least one of a pair of end regions respectively including a pair of end portions within a range of a reciprocal motion of the displacer, accumulates an elastic force when the displacer approaches the end portion, and releases the elastic force when the displacer departs from the end portion.
摘要翻译： 所公开的低温冷冻机包括：气缸，在气缸内往复运动的置换器，以及弹性单元，其设置在分别包括位移器的往复运动范围内的一对端部的一对端部区域中的至少一个中 当置换器接近端部时积累弹性力，并且当置换器离开端部时释放弹性力。
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公开(公告)号：US10378797B2
公开(公告)日：2019-08-13
申请号：US15608760
申请日：2017-05-30
发明人： Koji Yamada
IPC分类号： F25B9/14
摘要： A cryocooler includes: a housing internally defining a low-pressure gas chamber; a valve stator defining a variable pressure zone and a high-pressure zone between the housing and the valve stator; a valve rotor, a first seal member disposed adjacent to the high-pressure zone to seal the high-pressure zone and encompassing a first surface area; a second seal member disposed adjacent to the variable pressure zone to seal the variable pressure zone, and encompassing a second surface area that is larger than the first surface area; and a third seal member disposed adjacent to the variable pressure zone to seal the variable pressure zone, and encompassing a third surface area that is larger than the second surface area.
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公开(公告)号：US10274230B2
公开(公告)日：2019-04-30
申请号：US15497771
申请日：2017-04-26
发明人： Qian Bao , Mingyao Xu , Koji Yamada , Takaaki Morie
摘要： In a cryocooler, a displacer includes an internal space, and a working gas flows through the internal space. A cylinder reciprocally accommodates the displacer, and an expansion space for the working gas is formed between the cylinder and a bottom portion of the displacer. A plurality of annular protruding portions are provided on a bottom surface of the expansion space such as to form a multiplex structure. A plurality of annular recessed portions are provided on the bottom portion of the displacer such as to receive the plurality of annular protruding portions.
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