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Title:
CRYOGENIC REFRIGERATOR AND PIPING SYSTEM FOR CRYOGENIC REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2019/172144
Kind Code:
A1
Abstract:
A cryogenic refrigerator 10 comprising: high-pressure lines 24 through which a refrigerant gas can flow from a first compressor 12 and a second compressor 14 to a high-pressure port 16a of a cold head 16 through a convergence part 25; and low-pressure lines 26 through which the refrigerant gas can flow from a low-pressure port 16b of the cold head 16 to the first compressor 12 and the second compressor 14 through a branching part 27. The high-pressure lines 24 comprise a first high-pressure sub-line 24b connecting the first compressor 12 to the convergence part 25 and having a first check valve 28, and a second high-pressure sub-line 24c connecting the second compressor 14 to the convergence part 25 and having a second check valve 29. The low-pressure lines 26 comprise a first low-pressure sub-line 26b connecting the branching part 27 to the first compressor 12 and having a third check valve 30, and a second low-pressure sub-line 26c connecting the branching part 27 to the second compressor 14 and having a fourth check valve 31.

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Inventors:
MARUYAMA TORU (JP)
Application Number:
PCT/JP2019/008209
Publication Date:
September 12, 2019
Filing Date:
March 01, 2019
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
F25B9/00; F25B9/14; F25B49/02
Domestic Patent References:
WO2017106590A12017-06-22
WO2017114866A12017-07-06
Foreign References:
JP2012067633A2012-04-05
KR101741708B12017-05-30
JP2003113779A2003-04-18
JP2008014599A2008-01-24
JP2000121192A2000-04-28
JP2011510600A2011-03-31
JPH05113259A1993-05-07
JP2017528644A2017-09-28
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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