Apparatus for controlling a dual evaporator, dual fan refrigerator with independent temperature controls

Claim 1

A refrigerator apparatus comprising: a freezer compartment; a fresh food compartment, a refrigerator system having a first expansion valve, a first evaporator situated in said freezer compartment, a first and second compressor, a condenser, a second expansion valve, a second evaporator situated in said fresh food compartment, all the above elements of the refrigerator system connected together in series, in that order, in a refrigerant flow relationship and a phase separator connecting said second evaporator to said first expansion valve in a refrigerant flow relationship, said phase separator providing intercooling between said first and second compressors; a first fan situated in said freezer compartment for providing air flow over said first evaporator; a second fan situated in said fresh food compartment for providing air flow over said second evaporator; a servovalve connected to the input of said first compressor for reducing the refrigerant mass flow rate through said first evaporator when activated; a first thermostatic controller situated in said freezer compartment for maintaining a desired temperature in said freezer compartment by causing operation of said compressors and said fans; and a second thermostatic controller situated in said fresh food compartment for maintaining a desired temperature in fresh food compartment by activating said servovalve reducing the mass flow rate in said first evaporator.