초록 ▼

A single evaporator refrigerator-freezer is controlled for operation in three modes, wherein cooling of the refrigerator compartment is initiated in a first mode by operating only an evaporator fan to cool the compartment. During the first mode, the rate of temperature change within the refrigerator

A single evaporator refrigerator-freezer is controlled for operation in three modes, wherein cooling of the refrigerator compartment is initiated in a first mode by operating only an evaporator fan to cool the compartment. During the first mode, the rate of temperature change within the refrigerator compartment is calculated at predetermined time intervals and if the calculated rate is positive for at least a minimum number of time intervals, a second mode is initiated by operating a compressor to cool the refrigerator compartment. A third mode, wherein the compressor is operated to cool the freezer compartment, is initiated only after the refrigerator compartment has been adequately cooled. Means are further provided for modulating the flow of refrigerant to the evaporator to allow the evaporator to be operated at a higher temperature and pressure during cooling of the refrigerator than during cooling of the freezer.

대표청구항 ▼

In a refrigeration apparatus having a refrigerated compartment, an evaporator, an evaporator fan for circulating air over said evaporator and through said compartment, a single compressor for supplying refrigerant to said evaporator and means for sensing the temperature within said compartment, a co

In a refrigeration apparatus having a refrigerated compartment, an evaporator, an evaporator fan for circulating air over said evaporator and through said compartment, a single compressor for supplying refrigerant to said evaporator and means for sensing the temperature within said compartment, a control comprising: means for sensing the temperature within said compartment; means for determining the rate of temperature change within said compartment; and means for initiating operation of said compressor when the sensed temperature within said compartment is above a predetermined temperature and the rate of temperature change within said compartment reaches a predetermined value.