Importance

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Abstract

A refrigeration system having two evaporators to function as both an air conditioner and refrigerator of a vehicle is disclosed. The two evaporators are connected parallel with one another, with one of the two evaporators being disposed in the duct portion of the air conditioner and other being disposed in the refrigerator. An electrical expansion valve is serially connected with the inlet side of the air conditioner evaporator for controlling the flow of refrigerant to it. A shutoff valve for controlling the opening and closing of the line, and an expansion device, are serially connected ahead of the inlet side of the refrigerator evaporator. When the shutoff valve is closed, the operation of the electrical expansion valve is controlled by the change in temperature of refrigerant through the air conditioner evaporator; and when the shutoff valve is open, the operation of the expansion valve is controlled by the temperature of refrigerant in the refrigerator evaporator. Also, the opening and closing of the shutoff valve may be controlled either by the temperature of refrigerant in the refrigerator evaporator or by a timer device. The invention permits adequate control of both the temperature in the vehicle's passenger compartment and the temperature in the refrigerator, by a single refrigeration system.

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First Claim