Title:
NATURAL CIRCULATION TYPE COOLING DEVICE
Document Type and Number:
Japanese Patent JP2015210011
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To accurately eliminate gas occurring in a refrigerant liquid feeding pipe line in startup to attain smooth operation, in a natural circulation type cooling device that utilizes the elevation difference between a heat exchanger for air conditioning and a condenser to naturally circulate refrigerant.SOLUTION: A condenser 3 is arranged at a higher place than a heat exchanger 2 for air conditioning, and they are connected by a refrigerant gas return pipe line 6 and a refrigerant liquid feeding pipe line 7. In the refrigerant liquid feeding pipe line 7, an expansion valve 13 is arranged in the vicinity of the heat exchanger 2 for air conditioning. A bypass passage 14 is connected in a state of straddling the expansion valve 13, and a relief valve 15 is provided in the bypass passage 14. When a pressure sensor 16 detects excessive low pressure of the refrigerant liquid feeding pipe line 7, gas is discharged to the side of the heat exchanger 2 for air conditioning by opening the relief valve 15. Since gas is discharged in the dedicated bypass passage 14, gas is rapidly and surely discharged.
Inventors:
GO TETSUO
INOUE YOSHINORI
INOUE YOSHINORI
Application Number:
JP2014091296A
Publication Date:
November 24, 2015
Filing Date:
April 25, 2014
Export Citation:
Assignee:
SASAKURA ENG CO LTD
International Classes:
F24F5/00; F25B1/00
Domestic Patent References:
| JP2000292025A | 2000-10-20 | |||
| JPH09273876A | 1997-10-21 | |||
| JP2011112249A | 2011-06-09 | |||
| JPH07151353A | 1995-06-13 | |||
| JP2000046423A | 2000-02-18 | |||
| JPH11148680A | 1999-06-02 |
Foreign References:
| CN101520219A | 2009-09-02 |
Attorney, Agent or Firm:
Hiroyuki Nishi
Ryuichi Watanabe
Ryuichi Watanabe
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