Auto defrost refrigerator
First Claim
Patent Images
1. A refrigerator including:
- an upper freezer compartment, a lower fresh food compartment and an insulating partition separating said compartments;
an evaporator chamber separate from said freezer and fresh food compartments and above said fresh food compartment;
means for conducting relatively cold air from said chamber to said freezer compartment and means for conducting relatively cold air from said chamber to said fresh food compartment;
return means for returning relatively warm air from said freezer compartment to said chamber;
duct means connecting the lower portion of said fresh food compartment with said chamber for returning relative warm air from said fresh food compartment to said chamber;
evaporator means, including a first evaporator section positioned in said evaporator chamber and a second evaporator section positioned in said duct means, for cooling air passing thereover; and
fan means for withdrawing relatively warm air from said compartments, circulating the air from said freezer compartment over said first evaporator section, circulating the air from said fresh food compartment serially over both said second and first evaporator sections and discharging cooled air from said evaporator chamber.
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Abstract
A refrigerator includes a freezer compartment, a fresh food compartment and an evaporator chamber. Air is circulated between the chamber and each compartment. Air from the fresh food compartment is returned through a return duct. The evaporator has one section in the evaporator chamber and another section in the return air duct so that the fresh food compartment return air passes over both of the evaporator sections while the freezer return air passes over only the evaporator section in the evaporator chamber.
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Citations
10 Claims
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1. A refrigerator including:
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an upper freezer compartment, a lower fresh food compartment and an insulating partition separating said compartments; an evaporator chamber separate from said freezer and fresh food compartments and above said fresh food compartment; means for conducting relatively cold air from said chamber to said freezer compartment and means for conducting relatively cold air from said chamber to said fresh food compartment; return means for returning relatively warm air from said freezer compartment to said chamber; duct means connecting the lower portion of said fresh food compartment with said chamber for returning relative warm air from said fresh food compartment to said chamber; evaporator means, including a first evaporator section positioned in said evaporator chamber and a second evaporator section positioned in said duct means, for cooling air passing thereover; and fan means for withdrawing relatively warm air from said compartments, circulating the air from said freezer compartment over said first evaporator section, circulating the air from said fresh food compartment serially over both said second and first evaporator sections and discharging cooled air from said evaporator chamber. - View Dependent Claims (2, 3, 4, 5)
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6. A refrigerator including:
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insulating walls defining a storage volume; a horizontal insulating partition dividing said volume into a freezer compartment and a fresh food compartment, each having an access opening at the front thereof;
door means for closing each of said access openings.an evaporator chamber above said horizontal partition and rearward of said freezer compartment, a generally vertical partition separating said chamber from said freezer compartment; first air outlet passage connecting the upper portion of said chamber and said freezen compartment and an air return passage connecting the lower portions of said chamber and said freezer compartment; second air outlet passage connecting the upper portions of said chamber and said fresh food compartment; an air return duct within said insulating walls and connecting the lower portions of said fresh food compartment and said evaporator chamber; evaporator means having a first evaporator section positioned in said evaporator chamber and a second evaporator section positioned in said air return duct; and fan means for circulating air cooled by said evaporator from said evaporator chamber through said first and second air passages to and freezer and fresh food compartments and returning relatively warm air from said compartments to said chamber through said air return passage and said air return duct. - View Dependent Claims (7, 8, 9, 10)
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Specification