US3575012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration system having two stage generator
Assignee: Trane US Inc
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Filing: 1968-11-06
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Granted: 1971-04-13
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Expires: 1988-11-06
Abstract
Abstract An absorption refrigeration system having a two stage generator, wherein the major components are contained in a single shell and wherein the refrigerant is released from the absorbent solution in two generating steps and steam substantially above atmospheric pressure is supplied to the first stage generator and the condensate therefrom is put in heat exchange with the absorbent in the second stage generator.
Inventors
- 👤 David G Peckham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:29
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; F25B15/008; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
An Absorption refrigeration system comprising a unitary sealed horizontal substantially cylindrical elongated container having therein an absorbent and a refrigerant, an elongated partition extending longitudinally of said container and forming with the walls of said container a low-pressure chamber and a high-pressure chamber, an absorber and an evaporator in said lowpressure chamber, a first stage generator in said high-pressure chamber, a second stage generator in said high-pressure chamber, a condenser in said high-pressure chamber, means for heating said first stage generator, means for conducting refrigerant vapor from said first stage generator to said second stage generator to be condensed therein, means for conducting refrigerant vapor and refrigerant condensate from said second stage generator directly to said condenser without admixture prior to entry into said condenser, means for conducting refrigerant liquid from said condenser to said evaporator, first conduit means for conducting absorbent from said first stage generator to said second stage generator, second conduit means for conducting absorbent from said second stage generator to said absorber, and third conduit means for conducting absorbent from said absorber to said first stage generator.
Claim 2
Dependent Claim
181 words
An Absorption refrigeration system comprising a unitary sealed horizontal substantially cylindrical elongated container having therein an absorbent and a refrigerant, an elongated partition extending longitudinally of said container and forming with the walls of said container a low-pressure chamber and a high-pressure chamber, an absorber and an evaporator in said lowpressure chamber, a first stage generator in said high-pressure chamber, a second stage generator in said high-pressure chamber, a condenser in said high-pressure chamber, means for heating said first stage generator, means for conducting refrigerant vapor from said first stage generator to said second stage generator to be condensed therein, means for conducting refrigerant vapor and refrigerant condensate from said second stage generator directly to said condenser without admixture prior to entry into said condenser, means for conducting refrigerant liquid from said condenser to said evaporator, first conduit means for conducting absorbent from said first stage generator to said second stage generator, second conduit means for conducting absorbent from said second stage generator to said absorber, and third conduit means for conducting absorbent from said absorber to said first stage generator.
Claim 3
Dependent Claim
41 words
An absorption refrigeration system according to claim 1 including flow regulating means in said third conduit, means for regulating the flow in said third conduit means, and means responsive to the temperature of said evaporator for adjusting said flow regulating means.
Claim 4
Dependent Claim
15 words
An absorption refrigeration system according to claim 1 wherein the absorber is below the evaporator.
Claim 5
Dependent Claim
55 words
An absorption refrigeration system as defined in claim 1 wherein said elongated partition has a salient portion extending between the first stage generator and the second stage generator, said salient portion being constructed and arranged to contain refrigerant vapor to reduce the flow of heat from the first stage generator to the second stage generator.
Claim 6
Dependent Claim
34 words
An absorption refrigeration system according to claim 1 wherein the means for conducting the refrigerant received from said first stage generator to said condenser is a heat exchange conduit in said second stage generator.
Claim 7
Dependent Claim
50 words
An absorption system according to claim 5 wherein said heat exchange conduit has a flow regulating device substantially at its end which discharges refrigerant to said condenser, said flow regulating device being constructed and arranged to restrict the flow so that the fluid passing said valve is substantially all liquid.
Claim 8
Dependent Claim
196 words
An absorption refrigeration system comprising a unitary sealed horizontal substantially cylindrical elongated container having therein an absorbent and a refrigerant, an elongated partition extending longitudinally of said container and forming with the walls of said container a low-pressure chamber and a high-pressure chamber, an absorber and an evaporator in said low-pressure chamber, a first stage generator in said high-pressure chamber, a second stage generator in said high-pressure chamber, a condenser in said high-pressure chamber, said second stage generator being interposed horizontally between and having a common vertical extent with one of said first stage generator and said condenser, means for heating said first stage generator, means for conducting refrigerant vapor from said first stage generator to said second stage generator to be condensed therein, means for conducting refrigerant vapor and refrigerant condensate from said second stage generator to said condenser, means for conducting refrigerant liquid from said condenser to said evaporator, first conduit means for conducting absorbent from said first stage generator to said second stage generator, second conduit means for conducting absorbent from said second stage generator to said absorber, and third conduit means for conducting absorbent from said absorber to said first stage generator.
Claim 9
Dependent Claim
196 words
An absorption refrigeration system comprising a unitary sealed horizontal substantially cylindrical elongated container having therein an absorbent and a refrigerant, an elongated partition extending longitudinally of said container and forming with the walls of said container a low-pressure chamber and a high-pressure chamber, an absorber and an evaporator in said low-pressure chamber, a first stage generator in said high-pressure chamber, a second stage generator in said high-pressure chamber, a condenser in said high-pressure chamber, said second stage generator being interposed horizontally between and having a common vertical extent with one of said first stage generator and said condenser, means for heating said first stage generator, means for conducting refrigerant vapor from said first stage generator to said second stage generator to be condensed therein, means for conducting refrigerant vapor and refrigerant condensate from said second stage generator to said condenser, means for conducting refrigerant liquid from said condenser to said evaporator, first conduit means for conducting absorbent from said first stage generator to said second stage generator, second conduit means for conducting absorbent from said second stage generator to said absorber, and third conduit means for conducting absorbent from said absorber to said first stage generator.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |