REFRIGERATOR Russian patent published in 2009 - IPC F25D11/02 F25D17/08 F25D23/12 

FIELD: heating.

SUBSTANCE: refrigerator consists of a switchable temperature compartment, a cooler unit generating chilled air, a blower fan, an inlet valve for opening/closing the air supply duct connecting the cooler unit to the blower fan, a check valve for opening/closing the air recovery duct connecting the cooler unit to the outlet port therethrough air is discharged from the switchable temperature compartment and a regulator valve for opening/closing the air connective duct connecting the circulation port arranged in the switchable temperature compartment to the blower fan inlet side. When the inlet valve and the check valve are open the regulator valve is shut off; when the regulator valve is open the inlet valve and the check valve are shut off. A single damper on recovery of air from the switchable temperature compartment is used both as the check valve and the regulator valve. There is a single port arranged to be used both for outlet and circulation with the air recovery duct and the connective duct branching from the port separated by the damper on recovery of air from the switchable temperature compartment. The above damper has a two-way diaphragm switching between its two positions thus alternately shutting off the connective duct and the air recovery duct.

EFFECT: uniform distribution of temperature.

12 cl, 11 dwg