Title:
FREEZING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/068197
Kind Code:
A1
Abstract:
A freezing apparatus comprising: a main circuit through which a refrigerant flows; a plurality of compressors; a non-return valve; a condenser; a receiver; a first expansion valve; an evaporator; an injection flowpath; an electromagnetic valve disposed upon the injection flowpath; a fluid level detection unit that detects the amount of refrigerant stored inside the receiver; and a control unit. The control unit closes the first expansion valve prior to stopping the compressors and closes the electromagnetic valve at the point that the fluid level detection unit has detected that the amount of fluid component inside the receiver has reached a predetermined upper value.
Inventors:
ARIMOTO RYOHEI (JP)
SASAYA YUGO (JP)
SASAYA YUGO (JP)
Application Number:
PCT/JP2022/038399
Publication Date:
April 27, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F25B1/00; F25B1/10; F25B43/00
Domestic Patent References:
| WO2018167820A1 | 2018-09-20 |
Foreign References:
| JP2018009767A | 2018-01-18 | |||
| JP2001133056A | 2001-05-18 | |||
| JP2013139938A | 2013-07-18 | |||
| CN113503653A | 2021-10-15 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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