Patent US3693373A successfully refreshed from Google Patents.
US3693373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration machine
Assignee: Individual
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Filing: 1971-02-22
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Granted: 1972-09-26
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Expires: 1991-02-22
Abstract
Abstract An absorption refrigeration system employing a generator having a heat pipe associated therewith to transfer heat from a suitable burner to the interior of the generator to increase the capacity of the generator without a proportionate increase in the size thereof and to minimize the inside surface temperature of the generator wall.
Inventors
- 👤 Gerald K Gable
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:50
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/04; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
177 words
An absorption refrigeration system including a cylindrical generator, an absorber, a condenser, and an evaporator, said generator being adapted to receive solution to be vaporized; first tubular heat transfer means comprising a tubular coil encircling the exterior of said generator and spaced therefrom to form an annulus between said coil and said generator; combustion means disposed adjacent said first tubular heat transfer means and said generator for heating the walls of said generator and said first tubular heat transfer means, passage of flue gas through said annulus heating the walls of said generator and said tubular coil; second tubular heat transfer means disposed interiorly of said generator communicating with said first tubular heat transfer means for transferring heat from said first tubular heat transfer means to said second tubular heat transfer means to increase the amount of heat transferred to the solution inside said generator and minimize the quantity of heat transferred from said combustion means through the walls of said generator to solution therein, thereby minimizing the inside surface temperature of the walls of said generator.
Claim 2
Dependent Claim
177 words
An absorption refrigeration system including a cylindrical generator, an absorber, a condenser, and an evaporator, said generator being adapted to receive solution to be vaporized; first tubular heat transfer means comprising a tubular coil encircling the exterior of said generator and spaced therefrom to form an annulus between said coil and said generator; combustion means disposed adjacent said first tubular heat transfer means and said generator for heating the walls of said generator and said first tubular heat transfer means, passage of flue gas through said annulus heating the walls of said generator and said tubular coil; second tubular heat transfer means disposed interiorly of said generator communicating with said first tubular heat transfer means for transferring heat from said first tubular heat transfer means to said second tubular heat transfer means to increase the amount of heat transferred to the solution inside said generator and minimize the quantity of heat transferred from said combustion means through the walls of said generator to solution therein, thereby minimizing the inside surface temperature of the walls of said generator.
Claim 3
Dependent Claim
28 words
An absorption refrigeration system according to claim 1 wherein said second tubular heat transfer means comprises a tubular coil disposed in the lower portion of said cylindrical generator.
Claim 4
Dependent Claim
41 words
An absorption refrigeration system according to claim 2 wherein said first and second tubular heat transfer means contain a heat exchange fluid for circulation therein, said heat exchange fluid when cool occupying only a portion of the space within said coils.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |