Air-conditioning control system with freezing chamber-equipped refrigerator for vehicles

Claim 1

An air conditioning control system for use in an automotive vehicle including a compartment, and a refrigerator having a freezing chamber, which comprises: a variable capacity compressor having the capacity thereof being variable by an external control signal; at least one first cooling unit for cooling said compartment; a second cooling unit for cooking said refrigerator; a first valve arranged between said compressor and an inlet side of said at least one first cooling unit for connecting them to cause same to form a cooling circuit to thereby enable refrigerant to be supplied to said at least one first cooling unit when said first valve is open; a second valve arranged between said compressor and an inlet side of said second cooling unit for connecting them to cause same to form a refrigerating circuit to thereby enable refrigerant to be supplied to said second cooling unit when said second valve is open; first control means for alternately opening and closing said first and second valve at predetermined constant time intervals independents of temperatures of said at least one first cooling unit and of said second cooling unit; and second control means responsive to opening and closing of said first and second valves for supplying a predetermined control signal to said compressor, when said second valve is open, for causing increasing of the capacity of said compressor to such a degree as to enable making ice in said freezing chamber of said refrigerator.