US3608527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-water generator
Assignee: Sulzer AG
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Filing: 1969-11-12
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Granted: 1971-09-28
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Expires: 1989-11-12
Abstract
Abstract The hot-water generator has at least one whirling-muffle burner at the entry to the combustion gas flue so as to direct a combustion gas of high heat, e.g. 1,700* C., against contactheated heating surfaces in the flue. The heating surfaces are subdivided so that the first heating surface encountered by the gas flow carries only a part of the total water flow. Succeeding heating surfaces carry increased proportions of the total water flow.
Inventors
- 👤 Werner Stiefel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:21
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/40; F24H1/41; F22; F22B; F22B21/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
A hot-water generator comprising a flue, a contact-heated heating surface disposed in said flue for a flow of water therethrough, and at least one whirling muffle burner disposed at the entry of said flue adjacent said heating surface for directing a flow of combustion of gas into said flue directly from said burner at a temperature of at least 1,700* C. to encounter said heating surface.
Claim 2
Dependent Claim
66 words
A hot-water generator comprising a flue, a contact-heated heating surface disposed in said flue for a flow of water therethrough, and at least one whirling muffle burner disposed at the entry of said flue adjacent said heating surface for directing a flow of combustion of gas into said flue directly from said burner at a temperature of at least 1,700* C. to encounter said heating surface.
Claim 3
Dependent Claim
58 words
A hot-water generator as set forth in claim 1 wherein said heating surface is divided into at least two sections disposed consecutively in said flue with respect to the flow of combustion gas and which further comprises means for delivering a part of the total quantity of water supplied to the generator to the first of said sections.
Claim 4
Dependent Claim
28 words
A hot-water generator as set forth in claim 2 wherein said means delivers up to 60 percent of the total quantity of supplied water to said first section.
Claim 5
Dependent Claim
56 words
A hot-water generator as set forth in claim 2 which further comprises means for delivering said part of the supplied water from said first section to the other of said sections at a mixing point and means for delivering a part of the remainder of the supplied water into said other section at said mixing point.
Claim 6
Dependent Claim
34 words
A hot-water generator as set forth in claim 4 which further includes regulating means for proportioning the water to said sections in response to the temperature of the water emerging from said first section.
Claim 7
Dependent Claim
47 words
A hot-water generator as set forth in claim 1 wherein said channel has a wall delimiting said channel and connected to said heating surface to define a second heating surface for the flow of the water therethrough in counterflOw to the flow of gas in said channel.
Claim 8
Independent Claim
77 words
A method of generating hot water in a generator having a flue and a contact-heated heating surface therein for a flow of water therethrough, said method comprising the steps of directing a combustion gas flow at a temperature of at least 1, 700* C. into said flue to flow immediately across said heating surface therein, and maintaining the temperature of the water in said heating surface above the condensation point of the combustion gas in said flow.
Claim 9
Independent Claim
77 words
A method of generating hot water in a generator having a flue and a contact-heated heating surface therein for a flow of water therethrough, said method comprising the steps of directing a combustion gas flow at a temperature of at least 1, 700* C. into said flue to flow immediately across said heating surface therein, and maintaining the temperature of the water in said heating surface above the condensation point of the combustion gas in said flow.
References Cited (Backward Citations)
US1816434A
Cited
GB465280A
Cited
US2923348A
Cited
US2699759A
Cited
US2927632A
Cited
US3228451A
Cited
US2994308A
Cited
US3162179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |