Title:
PULSE TUBE REFRIGERATING MACHINE
Document Type and Number:
Japanese Patent JP3793481
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce vibration of a cooling stage and to restrain degradation of cooling performance.
SOLUTION: The thickness of a pulse tube cylinder 27 of a second pulse tube 4 from its low-temperature end to a position of 70% of its total length is set larger than the thickness of 30% on its high-temperature end side. By enhancing the rigidity of the cylinder 27 like this, the vibration of the cooling stage 25 caused by pulsation of pressure in the pulse tube 4 is prevented. In that case, the degradation of the refrigerating capacity is restrained by equalizing the thickness of 30% on the high-temperature end side to the thickness of a normal pulse tube cylinder.
Inventors:
Shuji Fujimoto
Application Number:
JP2002136095A
Publication Date:
July 05, 2006
Filing Date:
May 10, 2002
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
F25B9/00; F25B9/14; (IPC1-7): F25B9/00; F25B9/14
Attorney, Agent or Firm:
Aoyama Aoi
Hiroshi Yamazaki
Atsushi Maeda
Kazuo Hakata
Hiroshi Yamazaki
Atsushi Maeda
Kazuo Hakata