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公开(公告)号：US20240310095A1
公开(公告)日：2024-09-19
申请号：US18670736
申请日：2024-05-22
发明人： Yuki IKUSHIMA , Tatsuki NISHIO
CPC分类号： F25B49/00 , F25B9/14 , F25B2500/06 , F25B2500/19 , F25B2700/19
摘要： A cryocooler diagnostic system includes a cryocooler including a pressure sensor that measures a pressure inside the cryocooler, a calculation processing device configured to receive a measured pressure waveform indicating the pressure inside the cryocooler measured by the pressure sensor, and calculate an amplitude of a drive frequency of the cryocooler or of a frequency component that is an integer multiple of the drive frequency from the measured pressure waveform, and a diagnostic device configured to receive the amplitude calculated by the calculation processing device and diagnose the cryocooler based on the amplitude.
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公开(公告)号：US20200262013A1
公开(公告)日：2020-08-20
申请号：US16794202
申请日：2020-02-18
发明人： Tatsuki NISHIO , Shuntaro ADACHI
IPC分类号： B23P15/26
摘要： Provided is a method of disassembling a cold head provided with a displacer that extends in an axial direction, a cylinder that accommodates the displacer, and a displacer drive unit that is fastened to the cylinder and is connected to the displacer such that the displacer is driven in the axial direction, the method including mounting a lifting-up jig onto the displacer drive unit, unfastening the displacer drive unit and the cylinder from each other, and operating the lifting-up jig such that the displacer drive unit is lifted up from the cylinder together with the displacer.
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