US3744245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed cycle rotary engine system
Assignee: Individual
•
Filing: 1971-06-21
•
Granted: 1973-07-10
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Expires: 1991-06-21
Abstract
Abstract The closed cycle rotary engine system consists of a rotary expander stage and rotary pump stage, which are driven together at a 1 to 1.+ ratio. The fluid/vapor closed loop is formed to enter and leave the two rotary stages tangentially so that a minimum number of simplified rotary components are required. Multiple boiler coils are located above and around the two rotary stages to heat an organic fluid working medium which expands in a vapor state to drive the expander stage rotor. Multiple condenser coils are located below and in front of the two rotary stages which cools the vapor to a liquid state which is then drawn into the rotary pump stage for further cooling and transfer. Supplementary heating and cooling techniques are adopted to enable a reduction in the total size and volume of the rotary engine system.
Inventors
- 👤 D Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:27
CPC Classifications
F; F01; F01K; F01K7/00; F01K19/00; F01K19/10; F01K25/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
245 words
A closed cycle rotary engine system containing a sealed circulating organic fluid working medium, a rotary expander stage and rotary pump stage assembly driven together by a common drive shaft with gearing, multiple rotor and vane elements eccentrically located within said rotary expander stage and rotary pump stage assembly, multiple tangential ports disposed within said rotary expander stage and rotary pump stage assembly, multiple boiler coils disposed above and around the said rotary expander stage and rotary pump stage assembly, pipe connection means between said multiple boiler coils forming a vapor circuit with said multiple tangential ports disPosed within said rotary expander stage and rotary pump stage assembly, elongate fuel burners centrally disposed within said multiple boiler coils, a fuel supply and delivery means to each of said elongate fuel burners, central control means for all of said fuel burners, multiple condenser coils disposed below and in front of said rotary expander stage and rotary pump stage assembly, pipe connection means between said multiple condenser coils forming a fluid circuit with said multiple tangential ports disposed within said rotary expander stage and rotary pump stage assembly, thermal regeneration means in heat transfer communication with the said burners for providing auxiliary heat energy to the vapor entering the expander housing, a cooling means comprised of multiple air temperature splitters in close association with the said multiple condenser coils, a supplementary cooling means comprised of a liquid coolant jacket in direct contact with the rotary pump stage.
Claim 2
Dependent Claim
245 words
A closed cycle rotary engine system containing a sealed circulating organic fluid working medium, a rotary expander stage and rotary pump stage assembly driven together by a common drive shaft with gearing, multiple rotor and vane elements eccentrically located within said rotary expander stage and rotary pump stage assembly, multiple tangential ports disposed within said rotary expander stage and rotary pump stage assembly, multiple boiler coils disposed above and around the said rotary expander stage and rotary pump stage assembly, pipe connection means between said multiple boiler coils forming a vapor circuit with said multiple tangential ports disPosed within said rotary expander stage and rotary pump stage assembly, elongate fuel burners centrally disposed within said multiple boiler coils, a fuel supply and delivery means to each of said elongate fuel burners, central control means for all of said fuel burners, multiple condenser coils disposed below and in front of said rotary expander stage and rotary pump stage assembly, pipe connection means between said multiple condenser coils forming a fluid circuit with said multiple tangential ports disposed within said rotary expander stage and rotary pump stage assembly, thermal regeneration means in heat transfer communication with the said burners for providing auxiliary heat energy to the vapor entering the expander housing, a cooling means comprised of multiple air temperature splitters in close association with the said multiple condenser coils, a supplementary cooling means comprised of a liquid coolant jacket in direct contact with the rotary pump stage.
Claim 3
Dependent Claim
72 words
A closed cycle rotary engine system according to claim 1, wherein the said rotary expander stage and rotary pump stage assembly are driven together by a common drive shaft rotating at a differential speed between the ranges of 1 to 1.1 and 1 to 1.5, a mitre gear and bevel gear set joining said common drive shaft to the two rotating elements of said rotary expander stage and rotary pump stage assembly.
Claim 4
Dependent Claim
51 words
A closed cycle rotary engine system, according to claim 1, wherein the said multiple tangential ports disposed within said rotary expander stage and rotary pump stage assembly are disposed nearly parallel in each stage and at near a 45* angle to the base line of said closed cycle rotary engine system.
Claim 5
Dependent Claim
55 words
A closed cycle rotary engine system according to claim 1, in which the said multiple condenser coils forming a fluid circuit include two large condensers exposed to moving ambient air, the said multiple air temperature splitters in close association with the said multiple condenser coils are driven by any suitable and convenient rotating power means.
Claim 6
Dependent Claim
59 words
A closed cycle rotary engine system according to claim 1, in which said multiple boiler coils and said multiple condenser coils are completely thermally insulated from each other by means of a shaped insulation member, thermal conduction means disposed between sa1n elongate fuel burners and said thermal regeneration means, thermal insulation means disposed completely over said thermal conduction means.
Claim 7
Dependent Claim
52 words
A closed cycle rotary engine system according to claim 1, in which said rotary expander stage and rotary pump stage of said rotary expander stage and rotary pump stage assembly are symmetrical and squarish in configuration, a lightweight support frame joins and rigidly supports said rotary expander stage and rotary pump stage.
References Cited (Backward Citations)
US3537269A
Cited
US3657877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |