Title:
REFRIGERATING DEVICE
Document Type and Number:
Japanese Patent JP3358521
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To avoid frequent repetition of proportional control and thermostat transmission on/off control, related to the proportional control wherein refrigeration capacity is adjusted at high precision by adjusting travel of a control valve provided at a refrigeration circuit.
SOLUTION: A refrigerant circuit 20 comprising a compressor 31, a condenser 33, a liquid proportional control valve EV1, an evaporator 39, and a gas proportional control valve EV2 is provided. Travel of each control valve EV1 and EV2 is adjusted to adjust evaporation pressure and refrigerant circulation amount for controlling refrigerating capacity, thus proportional control action is available. Thermostat on/off action is allowed according to inner air temperature and target temperature. When the compressor 31 stops as refrigerating capacity cannot be throttled at proportional control action, the retry action for the proportional control operation is prohibited until defrosting operation which is performed at specified time interval completes.
Inventors:
Makoto Tokuno
Akitoshi Ueno
Akitoshi Ueno
Application Number:
JP35676097A
Publication Date:
December 24, 2002
Filing Date:
December 25, 1997
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F25B1/00; F25B47/02; (IPC1-7): F25B1/00; F25B47/02
Domestic Patent References:
| JP6479548A | ||||
| JP2107344A | ||||
| JP6311580B2 |
Attorney, Agent or Firm:
Hiroshi Maeda (2 outside)
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