US4052143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas combustion plant
Assignee: SAXLUND AS
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Filing: 1976-04-06
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Granted: 1977-10-04
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Expires: 1996-04-06
Abstract
Abstract A gas combustion plant or apparatus comprising a combustion chamber, a burner for introducing the gas to the combustion chamber and a tubular heat exchanger for preheating the gas to be combusted, by heat exchange with the hot combustion gases. The burner and the tubular heat exchanger are combined in that the straight, parallel tubes are provided in a uniformly distributed pattern over the cross-section of one end portion of the combustion chamber. The end of the tubes adjacent the end of the combustion chamber are connected to an inlet for the gas to be combusted, which are accordingly introduced into the combustion chamber through the tubes at a high velocity creating a desired turbulence in the portion of the combustion chamber in front of the tube orifices. An outlet for the hot combustion gases is positioned adjacent the said one end of the combustion chamber, whereby the hot combustion gases will have to flow past the tubes along the outer side thereof in order to reach the said outlet, thereby preheating the gas flowing inside the tubes. Accordingly, the said end portion of the combustion chamber in which the burner tubes are provided, constitutes a heat exchanger.
Inventors
- 👤 Jan Sandviknes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:19
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
217 words
Gas combustion plant comprising a combustion chamber, a plate closing one end of said combustion chamber, a hood being mounted on said plate defining a mixing chamber having a gas inlet opening, a plurality of tubes each having an inlet end within said mixing chamber and extending through said plate into and longitudinally of a portion of said combustion chamber adjacent said plate and ending in an axially facing mouth orifice opening into said combustion chamber, said tubes being spaced apart from one another defining a space outside of said tubes within said combustion chamber with said space opening into the portion of said combustion chamber into which said tubes open to provide an open gas exchanging communication between said space and said portion of said combustion chamber, said combustion chamber having an outlet for the hot combustion gases from said combustion chamber, positioned alongside said tubes whereby said gaswill flow through said tubes into said combustion chamber and the hot combustion gases will flow through said space outside of said tubes preheating the gas therein, to said outlet, said combustion chamber having a cylindrical portion merging into a flaring portion having flared walls and thus gradually increasing cross-section, said tubes being uniformly distributed over the cross-section of said cylindrical portion and extending into said flaring portion.
Claim 2
Dependent Claim
217 words
Gas combustion plant comprising a combustion chamber, a plate closing one end of said combustion chamber, a hood being mounted on said plate defining a mixing chamber having a gas inlet opening, a plurality of tubes each having an inlet end within said mixing chamber and extending through said plate into and longitudinally of a portion of said combustion chamber adjacent said plate and ending in an axially facing mouth orifice opening into said combustion chamber, said tubes being spaced apart from one another defining a space outside of said tubes within said combustion chamber with said space opening into the portion of said combustion chamber into which said tubes open to provide an open gas exchanging communication between said space and said portion of said combustion chamber, said combustion chamber having an outlet for the hot combustion gases from said combustion chamber, positioned alongside said tubes whereby said gaswill flow through said tubes into said combustion chamber and the hot combustion gases will flow through said space outside of said tubes preheating the gas therein, to said outlet, said combustion chamber having a cylindrical portion merging into a flaring portion having flared walls and thus gradually increasing cross-section, said tubes being uniformly distributed over the cross-section of said cylindrical portion and extending into said flaring portion.
Claim 3
Dependent Claim
29 words
Gas combustion plant as claimed in claim 1 wherein said combustion chamber is positioned vertically with said cylindrical portion at the upper end thereof and said tubes extend downwardly.
Claim 4
Dependent Claim
42 words
Gas combustion plant as claimed in claim 2, wherein said combustion chamber has a conical bottom portion below the open ends of said tubes and said conical bottom portion has a closeable discharge opening for any dust accumulating in said combustion chamber.
Claim 5
Dependent Claim
33 words
Gas combustion plant as claimed in claim 1, wherein said combustion chamber has a cylindrical main portion adjacent said flaring portion, said tubes extending through said flaring portion and into said main portion.
Claim 6
Dependent Claim
179 words
Gas combustion plant comprising a combustion chamber, a plate closing one end of said combustion chamber, a hood mounted on said plate defining mixing chamber having a gas inlet opening, a plurality of tubes each having an inlet end within said mixing chamber and extending through said plate into and longitudinally of a portion of said combustion chamber adjacent said plate and ending in an axially facing mouth orifice opening into said combustion chamber, said tubes being spaced apart from one another defining a space outside of the tubes within said combustion chamber with said space opening into the portion of said combustion chamber into which said tubes open to provide an open gas exchanging communication between said space and said portion of said combustion chamber, and said combustion chamber having an outlet for the hot combustion gases from said combustion chamber, positioned alongside said tube whereby said gas will flow through said tubes into said combustion chamber and the hot combustion gases will flow through said space outside of said tubes preheating the gas therein, to said outlet.
Claim 7
Dependent Claim
179 words
Gas combustion plant comprising a combustion chamber, a plate closing one end of said combustion chamber, a hood mounted on said plate defining mixing chamber having a gas inlet opening, a plurality of tubes each having an inlet end within said mixing chamber and extending through said plate into and longitudinally of a portion of said combustion chamber adjacent said plate and ending in an axially facing mouth orifice opening into said combustion chamber, said tubes being spaced apart from one another defining a space outside of the tubes within said combustion chamber with said space opening into the portion of said combustion chamber into which said tubes open to provide an open gas exchanging communication between said space and said portion of said combustion chamber, and said combustion chamber having an outlet for the hot combustion gases from said combustion chamber, positioned alongside said tube whereby said gas will flow through said tubes into said combustion chamber and the hot combustion gases will flow through said space outside of said tubes preheating the gas therein, to said outlet.
References Cited (Backward Citations)
US298215A
Cited
US3457121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |