US4920276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-and-electricity supply system
Assignee: Hitachi Ltd
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Filing: 1988-08-04
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Granted: 1990-04-24
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Expires: 2008-08-04
Abstract
Abstract A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output such a system includes: a steam turbine driven by the steam generated in the steam generator; a clutch with reduction gear, connected to a shaft of the steam turbine; a power generator for providing the electric output, connected to the clutch with a reduction gear; a clutch with a speed increasing gear, connected to a shaft of the power generator as occasion demands; a compressor connected to the clutch with speed increasing gear; a heat-side load utilizing a cooling medium or a heating medium supplied from the compressor.
Inventors
- 👤 Akitaka Tateishi
- 👤 Tadao Arakawa
- 👤 Masaru Kurosawa
- 👤 Yoshifumi Kubo
- 👤 Yoji Nagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:14
CPC Classifications
F; F01; F01K; F01K17/00; F01K17/005; Y; Y02; Y02E; Y02E20/00; Y02E20/14; Y02E20/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, said supply system comprising: a steam turbine driven by the steam generated in said steam generator; a power generator for providing the electric output, mechanically connected to said steam turbine; and a compressor mechanically connected to said steam turbine and utilized to provide the heat output, said compressor being utilized for supplying a cooling medium to a refrigerating equipment or for supplying a heating medium to a heating equipment wherein said steam turbine is connected to said power generator through a clutch means with reduction gear, and said power generator is connected to said compressor through a clutch means with speed increasing gear.
Claim 2
Dependent Claim
125 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, said supply system comprising: a steam turbine driven by the steam generated in said steam generator; a power generator for providing the electric output, mechanically connected to said steam turbine; and a compressor mechanically connected to said steam turbine and utilized to provide the heat output, said compressor being utilized for supplying a cooling medium to a refrigerating equipment or for supplying a heating medium to a heating equipment wherein said steam turbine is connected to said power generator through a clutch means with reduction gear, and said power generator is connected to said compressor through a clutch means with speed increasing gear.
Claim 3
Dependent Claim
113 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, said supply system comprising: a steam turbine driven by the steam generated in said steam generator; a clutch means with reduction gear, connected to a shaft of said steam turbine; a power generator for providing the electric output, connected to said clutch means with reduction gear; a clutch means with speed increasing gear, connected to a shaft of said power generator as occasion demands; a compressor connected to said clutch means with speed increasing gear; and a heat-side load utilizing a cooling medium or a heating medium supplied from said compressor.
Claim 4
Dependent Claim
113 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, said supply system comprising: a steam turbine driven by the steam generated in said steam generator; a clutch means with reduction gear, connected to a shaft of said steam turbine; a power generator for providing the electric output, connected to said clutch means with reduction gear; a clutch means with speed increasing gear, connected to a shaft of said power generator as occasion demands; a compressor connected to said clutch means with speed increasing gear; and a heat-side load utilizing a cooling medium or a heating medium supplied from said compressor.
Claim 5
Dependent Claim
28 words
A heat-and-electricity supply system according to claim 2, wherein said clutch means with speed increasing gear is released, so that the supply system operates as a combined plant.
Claim 6
Dependent Claim
25 words
A heat-and-electricity supply system according to claim 2, wherein said clutch means with reduction gear is released, and said power generator operates as a motor.
Claim 7
Dependent Claim
150 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, the supply system comprising: a steam turbine driven by the steam generated in the steam generator, the steam turbine generating a driving turbine force; a power generator for supplying the electric output; a compressor for compressing a refrigerant to supply the heat output; power generator clutch means for delivering the driving turbine force to the power generator for supplying the electric output and for interrupting the driving turbine force supplied to the power generator as occasion demands so that the supply of electric output is cut off; and compressor clutch means for delivering the driving turbine force to the compressor for supplying the heat output and for interrupting the driving turbine force supplied to the compressor as occasion demands so that the supply of heat is cut off.
Claim 8
Dependent Claim
150 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, the supply system comprising: a steam turbine driven by the steam generated in the steam generator, the steam turbine generating a driving turbine force; a power generator for supplying the electric output; a compressor for compressing a refrigerant to supply the heat output; power generator clutch means for delivering the driving turbine force to the power generator for supplying the electric output and for interrupting the driving turbine force supplied to the power generator as occasion demands so that the supply of electric output is cut off; and compressor clutch means for delivering the driving turbine force to the compressor for supplying the heat output and for interrupting the driving turbine force supplied to the compressor as occasion demands so that the supply of heat is cut off.
Claim 9
Dependent Claim
32 words
A heat-and-electricity supply system according to claim 5, wherein the power generator operates as a motor generating a driving motor force so that the compressor is driven by the driving motor force.
Claim 10
Dependent Claim
38 words
A heat-and-electricity supply system according to claim 5, wherein the power generator clutch means includes a power generator transmission means for changing a rotational speed transmitted from the turbine to a rotational speed suitable for the power generator.
Claim 11
Dependent Claim
35 words
A heat-and-electricity supply system according to claim 5, wherein the compressor clutch means includes a compressor transmission means for changing a rotational speed transmitted from the turbine to a rotational speed suitable for the compressor.
Claim 12
Dependent Claim
26 words
A heat-and-electricity supply system according to claim 5, wherein the power generator is connected to the turbine, and the compressor is connected to the power generator.
Claim 13
Dependent Claim
26 words
A heat-and-electricity supply system according to claim 5, wherein, the power generator is connected to the turbine, and the compressor is also connected to the turbine.
Claim 14
Dependent Claim
25 words
A heat-and-electricity supply system according to claim 5, wherein the compressor is connected to the turbine, and the power generator is connected to the compressor.
Claim 15
Dependent Claim
170 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, the supply system comprising: a power generator for supplying the electric output; a compressor for compressing a refrigerant to supply the heat output; a steam turbine driven by the steam generated in the steam generator, the steam turbine generating a driving turbine force for the power generator and the compressor; and clutch means arranged between the turbine and one of the power generator and the compressor so that the clutch means connect or disconnect the turbine with the one of the power generator and the compressor, wherein the power generator and the compressor are connected and the power generator operates as a motor generating a driving motor force when the turbine is disconnected with the one of the power generator and the compressor which is connected or disconnected with the turbine by the clutch means so that the driving motor force drives the compressor without driving the turbine.
Claim 16
Dependent Claim
170 words
A heat-and-electricity supply system in which steam from a steam generator is utilized to supply an electric output and a heat output, the supply system comprising: a power generator for supplying the electric output; a compressor for compressing a refrigerant to supply the heat output; a steam turbine driven by the steam generated in the steam generator, the steam turbine generating a driving turbine force for the power generator and the compressor; and clutch means arranged between the turbine and one of the power generator and the compressor so that the clutch means connect or disconnect the turbine with the one of the power generator and the compressor, wherein the power generator and the compressor are connected and the power generator operates as a motor generating a driving motor force when the turbine is disconnected with the one of the power generator and the compressor which is connected or disconnected with the turbine by the clutch means so that the driving motor force drives the compressor without driving the turbine.
Claim 17
Dependent Claim
52 words
A heat-and-electricity supply system according to claim 12, wherein the clutch means includes a transmission means for changing a rotational speed transmitted from the turbine to a rotational speed suitable for the one of the power generator and the compressor which is connected or disconnected with the turbine through the clutch means.
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) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |