Title:
COOLING UNIT USING TWO-STAGE COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2022/244619
Kind Code:
A1
Abstract:
A cooling unit 1a comprises a two-stage compressor 2a, a gas cooler 3, an intercooler 6, a first pressure reducer 4 disposed upstream of the intercooler, a second pressure reducer 7 disposed downstream of the intercooler, a vaporizer 8, and an oil separator 5. The oil separator 5 is disposed between the intercooler 6 and the first pressure reducer 4, which is located downstream of the gas cooler 3, and the oil separator 5 is configured to separate out oil 14 included in the refrigerant 9 and to feed the separated oil 14 to the two-stage compressor 2a. Accordingly, the temperature of the refrigerant at an intermediate pressure in the two-stage compressor 2a is reduced, the intake gas density is increased, and the refrigerant circulation quantity can be increased, thus giving a cooling unit having a high refrigerating capacity.
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Inventors:
IWATA HIROMITU
ICHIKAWA RYUTA
HAMADA MASAYUKI
ICHIKAWA RYUTA
HAMADA MASAYUKI
Application Number:
PCT/JP2022/019367
Publication Date:
November 24, 2022
Filing Date:
April 28, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F25B43/02; F25B1/00; F25B1/10
Foreign References:
| JP2017172923A | 2017-09-28 | |||
| JP2005241186A | 2005-09-08 | |||
| JP2020091063A | 2020-06-11 | |||
| JP2017172923A | 2017-09-28 |
Attorney, Agent or Firm:
ABE Shinichi et al. (JP)
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