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Title:
CRYOGENIC REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2019/009019
Kind Code:
A1
Abstract:
A cryogenic refrigerator 10 comprising: an expansion chamber 34; a cooling stage 26 thermally coupled to the expansion chamber 34, said cooling stage 26 comprising a first heat transfer block 28 having a surface exposed to the expansion chamber 34 and a first heat exchange surface 46 arranged on the outside of the expansion chamber 34, and a second heat transfer block 30 having a second heat exchange surface 48 facing the first heat exchange surface 46; a refrigerant supply opening 64 installed in the cooling stage 26 on the outside of the expansion chamber 34; a refrigerant discharge opening 66 installed in the cooling stage 26 on the outside of the expansion chamber 34; and a refrigerant passage 68 fluidically separated from the expansion chamber 34, said refrigerant passage 68 being formed between the first heat transfer block 28 and the second heat transfer block 30 such that the refrigerant flows along the first heat exchange surface 46 and the second heat exchange surface 48 from the refrigerant supply opening 64 to the refrigerant discharge opening 66.

Inventors:
BAO Qian (LTD. Tanashi Works 1-1, Yato-cho 2-chom, Nishitokyo-shi Tokyo 85, 〒1888585, JP)
XU Mingyao (LTD. Tanashi Works 1-1, Yato-cho 2-chom, Nishitokyo-shi Tokyo 85, 〒1888585, JP)
Application Number:
JP2018/022244
Publication Date:
January 10, 2019
Filing Date:
June 11, 2018
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES, LTD. (1-1 Osaki 2-chome, Shinagawa-ku Tokyo, 25, 〒1416025, JP)
International Classes:
F25B9/14; F25B9/00
Domestic Patent References:
WO2013179011A12013-12-05
WO2016068039A12016-05-06
Foreign References:
US5239200A1993-08-24
JP2013257074A2013-12-26
JPH0674584A1994-03-15
JP2000502175A2000-02-22
Attorney, Agent or Firm:
MORISHITA Sakaki (2-11-12, Ebisu-Nishi Shibuya-ku Tokyo, 21, 〒1500021, JP)
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