Refrigeration – Gas controller or director – Cooled gas directed relative to cooled enclosure
Patent
1996-07-22
1998-08-25
Doerrler, William
Refrigeration
Gas controller or director
Cooled gas directed relative to cooled enclosure
F25D 1704
Patent
active
057972800
ABSTRACT:
A refrigerator with an external air invasion prevention apparatus is disclosed. The refrigerator has a return duct, a duct cover, and an external air invasion prevention apparatus. The return duct has an air inlet portion and is formed in a wall separating a freezing room and a refrigerating room, and provides a passageway to circulate cooled air in the refrigerator. The duct cover has a plurality of air inlet holes and covers the air inlet portion. The external air invasion prevention apparatus closes and opens the plurality of air inlet holes according to opening and closing of a door of the refrigerator. External air which is air outside the refrigerator is prevented from flowing into the return duct. Further, the porous material is provided to absorb moisture in the cooled air when a moist cooled air is circulated through the return duct. Frost on the evaporator can be reduced due to the absorption of the moisture of the circulated cooled air.
REFERENCES:
patent: 2150064 (1939-03-01), John et al.
patent: 2633003 (1953-03-01), Jordan
patent: 4379391 (1983-04-01), Rhee
patent: 5111664 (1992-05-01), Yang
patent: 5214936 (1993-06-01), Lim et al.
Daewoo Electronics Co. Ltd.
Doerrler William
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