Patent US3626907A successfully refreshed from Google Patents.
US3626907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature hot-water vacuum systems
Assignee: NORMAN ENGINEERING Co
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Filing: 1966-11-10
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Granted: 1971-12-14
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Expires: 1986-11-10
Abstract
Abstract The invention is a system for generating steam particularly adapted for providing steam for economical, intermittent vacuumpumping capability for process systems utilizing steam-driven ejectors. There is no boiler in the system. Water accumulators are provided connected to a shell- and tube-type heat exchanger in which the water is heated under gradually increasing pressure up to a given maximum. The water under substantial pressure in the accumulators is flashed into steam as desired, thru a control valve for use at the steam-driven vacuum ejectors.
Inventors
- 👤 Edward F Slattery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:27
CPC Classifications
F; F22; F22B; F22B3/00; F22B3/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A steam-generating system adapted for use with process systems utilizing steam-driven ejectors comprising a water storage accumulator, heat exchanger means, means for heating water in the heat exchanger and circulating it to the water storage accumulator and for increasing the pressure in the accumulator during the heating cycle, the said heat exchanger means being the sole component in the system for heating the water, the accumulator being substantially full of water during the heating cycle and means connected to the water accumulator for flashing steam therefrom at a reduced pressure relative to the pressure in the accumulator.
Claim 2
Dependent Claim
97 words
A steam-generating system adapted for use with process systems utilizing steam-driven ejectors comprising a water storage accumulator, heat exchanger means, means for heating water in the heat exchanger and circulating it to the water storage accumulator and for increasing the pressure in the accumulator during the heating cycle, the said heat exchanger means being the sole component in the system for heating the water, the accumulator being substantially full of water during the heating cycle and means connected to the water accumulator for flashing steam therefrom at a reduced pressure relative to the pressure in the accumulator.
Claim 3
Dependent Claim
21 words
A system as in claim 1 including a plurality of said water storage accumulators connected in parallel for inflow and outflow.
Claim 4
Dependent Claim
23 words
A system as in claim 1 wherein the said heat exchanger means comprises means for circulating heating fluid through it at ambient pressure.
Claim 5
Dependent Claim
23 words
A system as in claim 3 including heating means for heating said heating fluid, said heating means being fired by a combustible fluid.
Claim 6
Dependent Claim
25 words
A system as in claim 1 including water supply means for pumping makeup water into the system prior to the beginning of a heating cycle.
Claim 7
Independent Claim
100 words
A method of generating steam adapted for operating a steam ejector plant comprising the steps of filling a water storage accumulator with water, circulating water from the storage accumulator through a heat exchanger for heating the water and back to the storage accumulator, utilizing the said heat exchanger solely for heating the said water, heating the water in the heat exchanger under gradually increasing pressure to a given maximum of pressure while maintaining the storage accumulator substantially full of water and flashing a portion of the water to steam from the accumulator at a lower pressure through a control valve.
Claim 8
Independent Claim
100 words
A method of generating steam adapted for operating a steam ejector plant comprising the steps of filling a water storage accumulator with water, circulating water from the storage accumulator through a heat exchanger for heating the water and back to the storage accumulator, utilizing the said heat exchanger solely for heating the said water, heating the water in the heat exchanger under gradually increasing pressure to a given maximum of pressure while maintaining the storage accumulator substantially full of water and flashing a portion of the water to steam from the accumulator at a lower pressure through a control valve.
Claim 9
Dependent Claim
29 words
A method as in claim 6 wherein the pressure of the water is increased to a relatively high pressure and is flashed into steam at a substantially lower pressure.
Claim 10
Dependent Claim
20 words
A method as in claim 6 including the step of circulating heating fluid at ambient pressure through the heat exchanger.
Claim 11
Dependent Claim
23 words
A method as in claim 6 including the step of heating oil and circulating it through the heat exchanger for heating the water.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |