Refrigerator having temperature-responsive control means for combined direct and fan-cooled operation
AssigneeKabushiki Kaisha Toshiba
InventorsKazuo Denpou, Kazumi Eto, Hideo Niida
Life of this patent
Estimating the term…
Abstract
A refrigerator with a freezing chamber and a cold chamber, wherein the freezing chamber is cooled rapidly by a main, fan-type, cooling system and a secondary, direct-type, cooling system. The secondary cooling system includes a box-like cooler having a projecting plate for placing food products thereon to provide uniform cooling within the freezing chamber. The refrigerator compressor is controlled in accordance with the temperature of the freezing chamber so as to be efficiently operated in the freezing cycle. Gas coolant is directed via control valves in accordance with the temperature of the freezing and cold chambers.
Claims16
A refrigerator having a freezing chamber and a cold chamber comprising:
- a main cooling means, including a first evaporator and a fan, for cooling the freezing chamber;
- a secondary cooling means, including a second evaporator positioned adjacent said freezing chamber for direct cooling thereof;
- a third cooling means, including a third evaporator disposed in said cold chamber for cooling thereof;
- a compressor for providing gas coolant for the first, second and third evaporators;
- a first control valve for directing gas coolant to the third and first evaporators;
- a second control valve for directing gas coolant to the second and first evaporators;
- first means for detecting the temperature of the freezing chamber and for controlling the compressor according to the detected temperature thereof;
- and
- second means for detecting the temperature of the cold chamber and for controlling the first and second control valves in accordance therewith.
A refrigerator having a freezing chamber and a cold chamber comprising:
- a main cooling means including a first evaporator and a fan, for cooling the freezing chamber;
- a secondary cooling means including a second evaporator positioned adjacent said freezing chamber for direct cooling thereof;
- a third cooling means including a third evaporator ' disposed in said cold chamber for cooling thereof;
- a compressor for providing refrigerant to said evaporators;
- control valve means including a first valve for directing refrigerant to said first and third evaporators and a second valve for directing refrigerant to said first and second evaporators;
- temperature-sensing means for sensing the temperatures of said freezing chamber and cold chamber;
- and
- control means responsive to said sensed temperature for operating said control valve means in response thereto.
Dependencies are inferred from the claim text.