High-speed defrost refrigeration system

Details High-speed defrost refrigeration system High-speed defrost refrigeration system

2006-01-10

2006-01-10

Tanner, Harry B. (Department: 3744)

Refrigeration

Processes

Defrosting or frost inhibiting

C062S196400, C062S278000

Reexamination Certificate

active

06983613

ABSTRACT:
A defrost refrigeration system having a main refrigeration system and comprising a first line extending from a compressing stage to an evaporator stage and adapted to receive refrigerant in high-pressure gas state from the compressing stage. A first pressure reducing device on the first line is provided for reducing a pressure of the refrigerant in the high-pressure gas state to a second low-pressure gas state. Valves are provided for stopping a flow of the refrigerant in a first low-pressure liquid state from a condensing stage to evaporators of the evaporator stage and directing a flow of the refrigerant in the second low-pressure gas state to release heat to defrost the evaporators and thereby changing phase at least partially to a second low-pressure liquid state. A second line is provided for directing the refrigerant having released heat to the compressing stage, the condensing stage or the evaporator stage.

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