Single evaporator for combination refrigeration apparatus

Abstract

Abstract IN EVAPORATOR IS DISCLOSED FOR USE IN A REFRIGERATOR OF THE TYPE HAVING BOTH A FROZEN FOOD COMPARTMENT AND A FRESH FOOD COMPARTMENT IN AIR FLOW COMMUNICATION WITH AN EVAPORATOR CHAMBER ENCLOSING A SINGLE EVAPORATOR. THE REFRIGERANT TUBING OF THE EVAPORATOR IS FLATTENED AND SPIRALLY WOUND ABOUT, AND IN CONTACT WITH, A METAL CYLINDER THROUGH WHICH THE MOISTURE LADEN RETURN AIR FROM THE FRESH FOOD COMPARTMENT IS INITIALLY DIRECTED FOR ENTRY INTO THE EVAPORATOR CHAMBER. THE MOISTURE IN THE RETURN AIR IS DEPOSIED AS FROST ON THE INTERNAL WALLS OF THE CYLINDER, REFRIGERATED BY CONDUCTANCE THROUGH THE TUBING SO THAT SUBSTANTIALLY DRY, COOL AIR EXITS FROM THE CYLINDER TO MIX WITH THE RELATIVELY DRY RETURN AIR OF THE FROZEN FOOD COMPARTMENT DIRECTED TO THE EVAPORATOR CHAMBER. THE MIXED AIR IS DRAWN OVER THE EXTERIOR WALLS OF THE CYLINDER AND IN CONTACT WITH THE FLATTENED WALLS OF THE CLOSELY SPACED COILS OF THE REFRIGERANT TUBE, FURTHER COOLING THE AIR FOR RETURN TO THE RESPECTIVE COMPARTMENTS. A DEFROSTER IS ALSO PROVIDED IN THE CYLINDER FOR PERIODIC DEFROST OF THE FROST ACCUMULATION. D R A W I N G

Inventors

• 👤 Robert C Jung

Bibliographic Details