Title:
冷凍サイクル
Document Type and Number:
Japanese Patent JP4172006
Kind Code:
B2
Abstract:
In a freezing cycle, if the pressure in a high-pressure line (8) reaches an abnormal level, the high-side pressure is released toward a low-pressure line (9) to lower the pressure without releasing the coolant into the atmosphere and the coolant is released into the atmosphere only when the pressure in the low-pressure line (9) reaches an abnormal level. A first means for a safety (10) that communicates between the high-pressure line (8) and the low-pressure line (9) is provided and a second means for safety (11) is provided between the low-pressure line (9) and the atmosphere, so that if the high-side pressure reaches a level equal to or higher than a first pressure level, the first means for safety (10) is engaged to leak the high-pressure coolant in the high-pressure line (8) into the low-pressure side to allow the increase in the pressure in the high-pressure line (8) to be absorbed in the low-pressure line (9), thereby lowering the pressure in the high-pressure line without releasing coolant to the outside. Since the coolant is released into the atmosphere by the second means for safety only if the pressure in the low-pressure line (9) reaches a level equal to or higher than a second pressure, the quantity of coolant released to the outside of the freezing cycle is minimized.
Inventors:
Shunichi Furuya
Kiyoshi Tanda
Kiyoshi Tanda
Application Number:
JP2000577445A
Publication Date:
October 29, 2008
Filing Date:
October 19, 1998
Export Citation:
Assignee:
Valeo Thermal Systems Co., Ltd.
International Classes:
F25B1/00; F25B31/00; F25B40/00; F25B41/06; F25B43/02; F25B49/00; F25B9/00
Domestic Patent References:
| JP3503206A | ||||
| JP7502335A |
Attorney, Agent or Firm:
Kazuho Onuki
Akito Kotake
Akito Kotake