Title:
COOLING CYCLE
Document Type and Number:
WIPO Patent Application WO/1999/008053
Kind Code:
A1
Abstract:
A cooling cycle using a supercritical fluid as a refrigerant, capable of regulating the quantity of the refrigerant over a wide range, and adapted to reduce a required capacity of a refrigerant tank provided for increasing and decreasing the quantity of the refrigerant, wherein a main path (7) is formed by connecting a compressor (2), a radiator (3), an expansion valve (5) and an evaporator (6) in series, and a bypass path (9) is provided in the main path (7) so as to bypass the expansion valve (5) and is provided with a refrigerant tank (10) for storing the refrigerant therein, and on-off valves (11, 12) for opening and closing the inlet and the outlet of the refrigerant tank (10). The refrigerant in the refrigerant tank is cooled with the refrigerant which is circulating in the main path (7) and which has just passed through the expansion valve to keep the temperature in the refrigerant tank (10) lower than that in a high-pressure side line (7a), whereby a required quantity of refrigerant can be recovered.
Inventors:
SUZUKI NOBUHIKO (JP)
Application Number:
PCT/JP1998/003555
Publication Date:
February 18, 1999
Filing Date:
August 11, 1998
Export Citation:
Assignee:
ZEXEL CORP (JP)
SUZUKI NOBUHIKO (JP)
SUZUKI NOBUHIKO (JP)
International Classes:
F25B1/00; F25B9/00; F25B40/00; (IPC1-7): F25B1/00
Foreign References:
| JPH03503206A | 1991-07-18 | |||
| JPS555893Y2 | 1980-02-09 | |||
| JPH01193561A | 1989-08-03 |
Attorney, Agent or Firm:
Onuki, Kazuyasu (Shibuya 1-chome Shibuya-ku Tokyo, JP)
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