US3772883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-cylinder external combustion power producing system
Assignee: CYCLE ASS
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Filing: 1972-06-13
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Granted: 1973-11-20
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Expires: 1992-06-13
Abstract
Abstract In an external combustion power producing system, a condensable fluid is heated to a vapor state and such heated vapor is separated into at least two portions without changing the state thereof as regards temperature, pressure, entropy, enthalpy, or its specific volume. One portion is expanded isentropically to a lower pressure in non-compression, expansion-only cylinder and is removed entirely from such cylinder and passed to a condenser. The other portion is expanded isentropically in a companion series of expansion and compression cylinders to which, in liquid form, the weight equivalent of the condensed portion of the fluid is introduced so as to be added to the other portion of the fluid. In such cylinders, the mixture is compressed isentropically to the maximum working pressure. Thereafter, the compressed fluid is reheated and reexpanded in accordance with the foregoing to complete the power producing cycle.
Inventors
- 👤 J Davoud
- 👤 J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:23
CPC Classifications
F; F01; F01K; F01K21/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
An external combustion power producing cycle comprising: a. heating a condensable fluid to the vapor state; b. separating the heated vapor into at least two portions without substantially changing the state thereof; c. expanding isentropically one portion of the vapor in a first zone; d. condensing such one portion of expanded fluid; e. expanding isentropically the other portion of the vapor in a second zone; f. adding in liquid form the weight equivalent of the condensed first portion of the fluid to the other portion of the fluid in said second zone; g. compressing isentropically the mixture to the operating pressure in said second zone; h. reheating the compressed fluid to the vapor state; and i. reexpanding the vapor in at least two portions as described in b, c and e above.
Claim 2
Dependent Claim
132 words
An external combustion power producing cycle comprising: a. heating a condensable fluid to the vapor state; b. separating the heated vapor into at least two portions without substantially changing the state thereof; c. expanding isentropically one portion of the vapor in a first zone; d. condensing such one portion of expanded fluid; e. expanding isentropically the other portion of the vapor in a second zone; f. adding in liquid form the weight equivalent of the condensed first portion of the fluid to the other portion of the fluid in said second zone; g. compressing isentropically the mixture to the operating pressure in said second zone; h. reheating the compressed fluid to the vapor state; and i. reexpanding the vapor in at least two portions as described in b, c and e above.
Claim 3
Dependent Claim
36 words
The invention defined in claim 1 wherein the portion of fluid which is condensed is, prior to cOndensation, expanded in an expansion cylinder means and removed entirely from such cylinder means and passed to a condenser.
Claim 4
Dependent Claim
47 words
The invention defined in claim 1 wherein the other portion of fluid is expanded in a cylinder means and, after addition of the liquid derived from condensation of the first portion, is compressed in the same cylinder means, in which it is expanded, to the maximum pressure.
Claim 5
Dependent Claim
139 words
An external combustion power producing cycle comprising: a. heating a condensable fluid to the vapor state in a superheater; b. removing the heating vapor from the superheater and separating it into at least two portions without substantially changing the state thereof; c. introducing one portion into an expansion cylinder means wherein it is expanded isentropically; d. passing said portion of expanded fluid to a condenser wherein it is condensed to liquid form; e. introducing the other portion of the heated vapor into a compression-expansion cylinder means wherein it is expanded isentropically; f. adding a liquid of a weight equivalent to that in the condenser to the compression-expansion cylinder means; g. compressing in the compression-expansion cylinder means the mixture isentropically to the operating pressure; and h. passing the compressed fluid back to the superheater for the initiation of another cycle.
Claim 6
Dependent Claim
139 words
An external combustion power producing cycle comprising: a. heating a condensable fluid to the vapor state in a superheater; b. removing the heating vapor from the superheater and separating it into at least two portions without substantially changing the state thereof; c. introducing one portion into an expansion cylinder means wherein it is expanded isentropically; d. passing said portion of expanded fluid to a condenser wherein it is condensed to liquid form; e. introducing the other portion of the heated vapor into a compression-expansion cylinder means wherein it is expanded isentropically; f. adding a liquid of a weight equivalent to that in the condenser to the compression-expansion cylinder means; g. compressing in the compression-expansion cylinder means the mixture isentropically to the operating pressure; and h. passing the compressed fluid back to the superheater for the initiation of another cycle.
Claim 7
Dependent Claim
20 words
The invention of claim 4 wherein all of the expanded fluid is removed from the expansion cylinder means and condensed.
Claim 8
Dependent Claim
21 words
The invention of claim 4 wherein the liquid added to the compression-expansion cylinder means is the liquid condensate in the condenser.
Claim 9
Dependent Claim
25 words
The invention of claim 4 wherein the condensate from the condenser is injected into the compression-expansion cylinder means before and/or during the compression step g).
Claim 10
Dependent Claim
152 words
An external combustion power producing system comprising: a. means for heating a condensable fluid to the vapor state; b. means for separating the heated vapor into at least two portions without substantially changing the state thereof; c. a first piston-cylinder means for expanding one portion isentropically to a lower pressure; d. condenser means to which such expanded portion is passed; e. a second piston-cylinder means wherein the other portion is expanded isentropically to a lower and different pressure from the lower pressure attained by the expansion of the first portion; f. means for adding in liquid form from the condenser to the second piston-cylinder means the weight equivalent of the condensed first portion; g. said second piston-cylinder means compressing the mixture to the operating pressure; and h. means for passing the compressed fluid from the second piston-cylinder means to the heating means a for reheating in initiating a further power producing cycle.
Claim 11
Dependent Claim
152 words
An external combustion power producing system comprising: a. means for heating a condensable fluid to the vapor state; b. means for separating the heated vapor into at least two portions without substantially changing the state thereof; c. a first piston-cylinder means for expanding one portion isentropically to a lower pressure; d. condenser means to which such expanded portion is passed; e. a second piston-cylinder means wherein the other portion is expanded isentropically to a lower and different pressure from the lower pressure attained by the expansion of the first portion; f. means for adding in liquid form from the condenser to the second piston-cylinder means the weight equivalent of the condensed first portion; g. said second piston-cylinder means compressing the mixture to the operating pressure; and h. means for passing the compressed fluid from the second piston-cylinder means to the heating means a for reheating in initiating a further power producing cycle.
Claim 12
Dependent Claim
21 words
The invention of claim 8 wherein said first piston-cylinder means includes at least one single acting cylinder of the Uniflow type.
Claim 13
Dependent Claim
21 words
The invention of claim 8 wherein said first piston-cylinder means includes at least one double acting cylinder of the Uniflow type.
Claim 14
Dependent Claim
19 words
The invention of claim 8 wherein said first piston-cylinder means includes two or more cylinders of the compound type.
Claim 15
Dependent Claim
17 words
The invention of claim 8 wherein said second piston-cylinder means includes at least one single acting cylinder.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |