Title:
The control method of a cryogenic refrigeration machine and a cryogenic refrigeration machine
Document Type and Number:
Japanese Patent JP6180349
Kind Code:
B2
Abstract:
An expander generates cold by expanding a refrigerant gas in a cryogenic refrigerator. A compressor compresses the refrigerant gas returning from the expander. Pipes are connected to the expander and the compressor and circulate the refrigerant gas between the expander and the compressor. A determiner determines whether or not a change cycle of the pressure of the refrigerant gas flowing in the pipes is in a predetermined range. The determiner may determine whether or not the change cycle of the pressure of a low-pressure pipe in which a low-pressure refrigerant gas flows toward the compressor from the expander is in a predetermined range.
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Inventors:
Nakajima Nishiki
Application Number:
JP2014055331A
Publication Date:
August 16, 2017
Filing Date:
March 18, 2014
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
F25B9/06; F25B9/14; F25B41/42
Domestic Patent References:
| JP9140050A | ||||
| JP11257768A | ||||
| JP2002039638A |
Attorney, Agent or Firm:
Sakaki Morishita
Yusuke Murata
Tomoyuki Miki
Tomisho Teruo
Yusuke Murata
Tomoyuki Miki
Tomisho Teruo