US3575144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generator
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1969-07-24
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Granted: 1971-04-20
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Expires: 1989-07-24
Abstract
Abstract A vapor generator includes a liquid ejector which is operated by the high-pressure water for circulating fluid within the generator. The apparatus also includes a steam ejector or condensation-type ejector which is operated by part of the vapor generated within the vapor generator to apply a pumping pressure to the feed liquid directed into the water ejector.
Inventors
- 👤 Yasuro Takahashi
- 👤 Masahiro Soda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:28
CPC Classifications
F; F22; F22B; F22B29/00; F22B29/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
48 words
A steam generator, according to claim 1, including a feed pump connected to said feed liquid supply for circulating feed liquid to said vapor generator, and a feed water heater connected to the discharge of said feed pump and connected as its discharge end to said steam ejector.
Claim 2
Dependent Claim
116 words
A vapor generator comprising vapor generating tubes connected to said vapor drum, vapor drum means for collecting vapor from said generating tubes for supply to a vapor operated device, downcomer means between said vapor drum and said vapor generating tubes, a feed liquid supply condensation-type ejector means for increasing pressure of the feed liquid supplIed by said feed liquid supply, and liquid ejector means for circulating said feed liquid to said vapor generating tubes through said downcomer means, said condensation-type ejector being operated by the use of a part of the vapor generated in said vapor drum, and said liquid ejector being operated by the use of feed liquid pressure increased in said condensation-type ejector means.
Claim 3
Dependent Claim
56 words
A vapor generator, according to claim 3, wherein said feed liquid supply includes a feed pump, an economizer connected to the discharge of said pump and to said vapor generator tube, said liquid ejector being located between said economizer and said vapor generating tube and said condensation-type ejector being located between said pump and said economizer.
Claim 4
Dependent Claim
36 words
A vapor generator, according to claim 1, wherein said liquid ejector has a discharge connected to said generating tube, and means supplying liquid from said drum to said liquid ejector for inducing flow through said ejector.
Claim 5
Dependent Claim
49 words
A vapor generator, according to claim 1, wherein said condensate-type ejector having a discharge connected to said liquid ejector, and means for connecting said condensate-type ejector to said vapor drum means for directing vapor from said vapor drum means to said condensate-type ejector for forcing the feed liquid therethrough.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |