Title:
REFRIGERATION DEVICE
Document Type and Number:
Japanese Patent JP3036519
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To avoid positively a severe frosted state where an amount of frosting to an evaporator becomes excessive and improve reliability in operation of a refrigeration device.
SOLUTION: A high temperature side refrigeration circuit and a low temperature side refrigeration circuit are connected to each other through a refrigerant heat exchanger 11 so as to constitute a two-element refrigerator device. Then, the low temperature refrigerant and the freezer-chamber air in a freezer chamber or the like are heat exchanged with each other at an evaporator 50 in the low temperature side refrigeration circuit and the air in the refrigeration device is cooled. Since frost adheres to this evaporator 50, a defrosting operation for removing frost is carried out. In turn, in the case that a refrigerant evaporating temperature at the evaporator 50 is in a range of -10 to -2°C, a state sensing section 73 of a controller 70 judges that the device is at a promoting state where frosting may easily grow and outputs a detection signal. Then, a forced defrosting section 74 accumulate a continued time of the promoting state in response to the sensing signal of the state sensing section 73a and then performs a defrosting operation as the accumulated time becomes three hours.
More Like This:
| JPH0195260 | REFRIGERATOR |
| JP6204110 | An air-conditioner for vehicles |
| JPH01121645 | DEFROSTING CONTROL DEVICE FOR AIR CONDITIONER |
Inventors:
Akitoshi Ueno
Takeo Ueno
Toshiaki Mukaiya
Takeo Ueno
Toshiaki Mukaiya
Application Number:
JP21127798A
Publication Date:
April 24, 2000
Filing Date:
July 27, 1998
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F25B47/02; F25B7/00; F25D21/02; F25D21/06; (IPC1-7): F25B47/02; F25B7/00; F25D21/02; F25D21/06
Domestic Patent References:
| JP60175977A | ||||
| JP613937A | ||||
| JP5864436A | ||||
| JP367972A |
Attorney, Agent or Firm:
Hiroshi Maeda (2 outside)