Method and apparatus for defrosting cooling elements in an open

Details Method and apparatus for defrosting cooling elements in an open Method and apparatus for defrosting cooling elements in an open

1979-08-13

1981-12-08

Tapolcai, Jr., William E.

Refrigeration

Processes

Defrosting or frost inhibiting

62151, 62186, A47F 304

Patent

active

043040985

ABSTRACT:
A method and apparatus for defrosting cooling elements in a freezer chest of the type displaying frozen food items. The chest, having an open top, is provided with a channel around the food items through which air is circulated by means of a fan. The air is also directed over the open top of the freezer. Upon the defrost cycle, the cooling elements are shut down, and the air flow is reversed and directed away from the food items whereby air is drawn into the channel from the atmosphere outside of the freezer chest.

REFERENCES:
patent: 2725726 (1955-12-01), Swanson
patent: 3464224 (1969-09-01), Swanson
patent: 3845637 (1974-11-01), Shepherd
patent: 3850003 (1974-11-01), Beckwith et al.
patent: 3937033 (1976-02-01), Beckwith et al.
patent: 4026121 (1977-05-01), Aokage et al.
patent: 4120174 (1978-10-01), Johnston
patent: 4182130 (1980-01-01), Ljung

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