US3580001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration machine with concentration control tank
Assignee: Carrier Corp
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Filing: 1968-09-03
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Granted: 1971-05-25
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Expires: 1988-09-03
Abstract
Abstract An absorption refrigeration system employing a liquid storage tank to vary the concentration of refrigerant in the solution supplied to the absorber under varying ambient temperature operating conditions.
Inventors
- 👤 Keith V Eisberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:53
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: 6
Claim 1
Independent Claim
104 words
An air-cooled absorption refrigeration system having a generator and condenser on the high-pressure side and an absorber and evaporator on the low pressure side thereof connected to provide refrigeration, a storage vessel having an inlet therein communicating with the discharge side of said evaporator; and passage means for supplying vapor and solution from said storage vessel to said absorber while maintaining a constant solution level in said vessel for increasing the concentration of refrigerant in the solution supplied to the absorber as cooling air temperatures decrease and decreasing the concentration of refrigerant in the solution supplied to the absorber as cooling air temperatures increase.
Claim 2
Dependent Claim
104 words
An air-cooled absorption refrigeration system having a generator and condenser on the high-pressure side and an absorber and evaporator on the low pressure side thereof connected to provide refrigeration, a storage vessel having an inlet therein communicating with the discharge side of said evaporator; and passage means for supplying vapor and solution from said storage vessel to said absorber while maintaining a constant solution level in said vessel for increasing the concentration of refrigerant in the solution supplied to the absorber as cooling air temperatures decrease and decreasing the concentration of refrigerant in the solution supplied to the absorber as cooling air temperatures increase.
Claim 3
Dependent Claim
72 words
An absorption refrigeration machine according to claim 1 wherein said passage means includes a pickup tube disposed within said vessel, said tube having an opening therein at a location corresponding to the desired level of collected solution in said vessel for passage of solution and refrigerant vapor from said vessel into said pickup tube, said pickup tube being adapted to receive solution from a location in said vessel remote from the inlet.
Claim 4
Dependent Claim
105 words
An absorption refrigeration system according to claim 2 wherein the inlet to said vessel is disposed in the top portion thereof, said passage means further including a baffle disposed in said vessel, said baffle having a first opening therein adjacent the lower portion of said vessel for passage of solution from said vessel into said baffle and an opening adjacent the top portion of said vessel for passage of refrigerant vapor from said vessel into said baffle, the opening of said pickup tube communicating with the interior of said baffle for passage of liquid and refrigerant vapor from within said baffle into said pickup tube.
Claim 5
Independent Claim
204 words
A method for controlling the capacity of an air-cooled absorption refrigeration machine in response to ambient air temperature which consists in the steps of: reducing the concentration of refrigerant in the solution supplied to the machine absorber as ambient air temperature increases to reduce absorbent pressure, and increasing the concentration of refrigerant in the solution supplied to the absorber as ambient air temperatures decreases, the concentration of refrigerant being reduced by discharging refrigerant vapor and solution having a high concentration of refrigerant therein from the machine evaporator into the top portion of a storage vessel; and passing refrigerant from the top portion of the vessel and solution having a low concentration of refrigerant from the bottom portion of the vessel to the absorber while maintaining a constant level of solution within the storage vessel, the concentration of refrigerant being increased by discharging refrigerant vapor and solution having a low concentration of refrigerant therein from the machine evaporator into the top portion of a storage vessel; and passing refrigerant from the top portion of the vessel and solution having a high concentration of refrigerant from the bottom portion of the vessel to the absorber while maintaining a constant level of solution within the storage vessel.
Claim 6
Independent Claim
204 words
A method for controlling the capacity of an air-cooled absorption refrigeration machine in response to ambient air temperature which consists in the steps of: reducing the concentration of refrigerant in the solution supplied to the machine absorber as ambient air temperature increases to reduce absorbent pressure, and increasing the concentration of refrigerant in the solution supplied to the absorber as ambient air temperatures decreases, the concentration of refrigerant being reduced by discharging refrigerant vapor and solution having a high concentration of refrigerant therein from the machine evaporator into the top portion of a storage vessel; and passing refrigerant from the top portion of the vessel and solution having a low concentration of refrigerant from the bottom portion of the vessel to the absorber while maintaining a constant level of solution within the storage vessel, the concentration of refrigerant being increased by discharging refrigerant vapor and solution having a low concentration of refrigerant therein from the machine evaporator into the top portion of a storage vessel; and passing refrigerant from the top portion of the vessel and solution having a high concentration of refrigerant from the bottom portion of the vessel to the absorber while maintaining a constant level of solution within the storage vessel.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |