Refrigeration – Automatic control – Refrigeration producer
Patent
1989-07-17
1990-10-02
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62157, 62199, 62231, 62244, F25B 502
Patent
active
049599747
ABSTRACT:
An air-conditioning control system for use in an automotive vehicle comprises a variable capacity compressor having capacity thereof being variable by an external control signal, at least one first cooling unit for cooling a vehicle compartment, and a second cooling unit for cooling a refrigerator. A first valve is arranged between the compressor and the first cooling unit for connecting them to cause same to form a cooling circuit when the first valve is open. A second valve is arranged between the compressor and the second cooling unit for connecting them to cause same to form a refrigerating circuit when the second valve is open. A valve control unit controls opening and closing of the first and second valves. A compressor control unit is responsive to opening and closing of the first and second valves for supplying a predetermined control signal to the compressor, when the second valve is open, for increasing the capacity of the compressor to such a degree as to enable making ice in a freezing chamber of the refrigerator.
REFERENCES:
patent: 4439998 (1984-04-01), Horvay et al.
patent: 4565072 (1986-01-01), Fujiwara et al.
patent: 4720982 (1988-01-01), Shimizu et al.
patent: 4766735 (1988-08-01), Gotou
Diesel Kiki Co. Ltd.
Tanner Harry B.
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