US3968660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling arrangement for a no-frost refrigerator
Assignee: BSH Hausgeräte GmbH
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Filing: 1974-06-28
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Granted: 1976-07-13
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Expires: 1994-06-28
Abstract
Abstract A cooling arrangement, particularly for a no-frost refrigerator, including a heat-insulated housing, containing air; heating means located in said heat-insulating housing for heating a portion of said air; cooling means located in said heat-insulating housing for cooling a portion of said air; and air guiding means for mixing at least a portion of the heated air with a portion of the cooled air.
Inventors
- 👤 Klaus Amann
- 👤 Wolfgang Dienemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D17/042; F25D17/045; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0411; F25D2400/00; F25D2400/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A cooling arrangement, particularly for a no-frost refrigerator, comprising a heat-insulating housing containing air in a first zone in which the air is relatively warmer and more humid, and in a second zone in which the air is relatively cooler and less humid; passage means including a mixing region for conducting at least a portion of the more humid air from said first zone towards said second zone and to said mixing region; mixing means for causing said portion of humid air from said first zone to be mixed with the air in said second zone; and means for heating and lowering the relative moisture content of said portion of humid air from said first zone prior to the mixing by said mixing means, so that the formation of fog and ice in said mixing region is prevented, said heating means comprising a motor associated with said mixing means.
Claim 2
Dependent Claim
149 words
A cooling arrangement, particularly for a no-frost refrigerator, comprising a heat-insulating housing containing air in a first zone in which the air is relatively warmer and more humid, and in a second zone in which the air is relatively cooler and less humid; passage means including a mixing region for conducting at least a portion of the more humid air from said first zone towards said second zone and to said mixing region; mixing means for causing said portion of humid air from said first zone to be mixed with the air in said second zone; and means for heating and lowering the relative moisture content of said portion of humid air from said first zone prior to the mixing by said mixing means, so that the formation of fog and ice in said mixing region is prevented, said heating means comprising a motor associated with said mixing means.
Claim 3
Dependent Claim
16 words
A cooling arrangement as defined in claim 1, and further comprising cooling means including an evaporator.
Claim 4
Dependent Claim
23 words
A cooling arrangement as defined in claim 1, wherein said housing includes two compartments, each of said compartments defining one of said zones.
Claim 5
Dependent Claim
26 words
A cooling arrangement as defined in claim 3, wherein said relatively warmer compartment is a food-storage compartment, and said relatively cooler compartment is a freezer compartment.
Claim 6
Dependent Claim
25 words
A cooling arrangement as defined in claim 3, wherein said two compartments are separated by a partition comprising an air passageway between said two compartments.
Claim 7
Dependent Claim
17 words
A cooling arrangement as defined in claim 5, wherein said heating means is located in said passageway.
Claim 8
Dependent Claim
28 words
A cooling arrangement as defined in claim 5, wherein said passage means directs the air from the relatively warmer compartment to the relatively colder compartment through said passageway.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |