US4427364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidizable bed combustion chamber
Assignee: ABB Stal AB
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Filing: 1981-10-09
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Granted: 1984-01-24
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Expires: 2001-10-09
Abstract
Abstract A fluidizable bed combustion chamber comprises an intermediate partition (2,7) which divides the chamber into an upper combustion space (1a) and a lower plenum (1b) and which is provided with means (4,4a,8) for injecting fuel into the upper combustion space in which, during use of the combustion chamber, a bed of fluidized material (6) is created. The intermediate partition is composed of a plurality of nested modules (7), each of polygonal shape and having a substantially centrally positioned fuel supply member (8). Each corner surface (9) of each module is upwardly inclined in the direction away from the center of the module, and these corner surfaces are provided with openings (10) enabling air to be injected into the upper combustion space from the plenum chamber. Preferably, the modules are of regular polygonal shape, for example triangular, quadratic or hexagonal.
Inventors
- 👤 Jorgen Bergkvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:21
CPC Classifications
F; F23; F23C; F23C10/00; F23C10/18; F23C10/20; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1818; B01J8/1827; F23C10/22; F27; F27B; F27B15/00; F27B15/02; F27B15/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
126 words
In a fluidizable bed combustion chamber comprising an intermediate partition which divides said chamber into an upper combustion space and a lower plenum and which is provided with means for injecting air and fuel into said upper combustion space in which, in use of the combustion chamber, a bed of fluidized material is created, the improvement according to which said intermediate partition is composed of modules each having side edges defining a polygonal shape, a substantially centrally positioned fuel supply member and upwardly inclined corner surfaces defined by portions of said side edges which are upwardly inclined in the direction away from the center of the module, said corner surfaces comprising openings enabling air to be injected into said upper combustion space from said lower plenum.
Claim 2
Dependent Claim
126 words
In a fluidizable bed combustion chamber comprising an intermediate partition which divides said chamber into an upper combustion space and a lower plenum and which is provided with means for injecting air and fuel into said upper combustion space in which, in use of the combustion chamber, a bed of fluidized material is created, the improvement according to which said intermediate partition is composed of modules each having side edges defining a polygonal shape, a substantially centrally positioned fuel supply member and upwardly inclined corner surfaces defined by portions of said side edges which are upwardly inclined in the direction away from the center of the module, said corner surfaces comprising openings enabling air to be injected into said upper combustion space from said lower plenum.
Claim 3
Dependent Claim
19 words
A fluidizable bed combustion chamber according to claim 1, wherein each of said modules is of regular polygonal shape.
Claim 4
Dependent Claim
21 words
A fluidizable bed combustion chamber according to claim 2, wherein the corner angles of said modules are integer multiples of 30°.
Claim 5
Dependent Claim
24 words
A fluidizable bed combustion chamber according to claim 1, wherein pyramids are formed by the contiguous upwardly inclined corner surfaces of immediately adjacent modules.
Claim 6
Dependent Claim
41 words
A fluidizable bed combustion chamber according to claim 4, wherein each module comprises a substantially plane floor between said centrally positioned fuel supply member and said corner surfaces, said floor extending to each side of the module between said corner surfaces.
Claim 7
Dependent Claim
19 words
A fluidizable bed combustion chamber according to claim 1, wherein said fuel supply member comprises a generally coniform member.
Claim 8
Dependent Claim
31 words
A fluidizable bed combustion chamber according to claim 6, wherein said coniform member is provided with openings enabling air to be injected into said upper combustion space from said lower plenum.
Claim 9
Dependent Claim
27 words
A fluidizable bed combustion chamber according to claim 5, wherein said substantially plane floor and said corner surfaces are formed from a folded sheet of metallic material.
Claim 10
Dependent Claim
151 words
A fluidizable bed combustion apparatus, comprising: a chamber; an intermediate partition dividing said chamber into an upper combustion space and a lower plenum, said partition comprising a plurality of polygonal modules, each module including: a plurality of pairs of side edges extended toward a plurality of corners; a substantially centrally positioned fuel supply member, said member having a base; a floor portion extended radially from said base; a plurality of inclined corner surfaces extended radially outwardly and upwardly from said floor portion toward each of said corners, each said corner surface being defined by radially outwardly and upwardly extended end portions of one of said pairs of side edges; and a plurality of openings in said inclined corner surfaces for allowing the passage of air from said lower plenum into said upper combustion space; and means for injecting fuel through said fuel supply member and air through said plurality of openings.
Claim 11
Dependent Claim
151 words
A fluidizable bed combustion apparatus, comprising: a chamber; an intermediate partition dividing said chamber into an upper combustion space and a lower plenum, said partition comprising a plurality of polygonal modules, each module including: a plurality of pairs of side edges extended toward a plurality of corners; a substantially centrally positioned fuel supply member, said member having a base; a floor portion extended radially from said base; a plurality of inclined corner surfaces extended radially outwardly and upwardly from said floor portion toward each of said corners, each said corner surface being defined by radially outwardly and upwardly extended end portions of one of said pairs of side edges; and a plurality of openings in said inclined corner surfaces for allowing the passage of air from said lower plenum into said upper combustion space; and means for injecting fuel through said fuel supply member and air through said plurality of openings.
Claim 12
Dependent Claim
14 words
Apparatus according to claim 9, wherein each of said modules is regular polygonal shape.
Claim 13
Dependent Claim
17 words
Apparatus according to claim 10, wherein the corner angles of said modules are integer multiples of 30°.
Claim 14
Dependent Claim
19 words
Apparatus according to claim 9, wherein pyramids are formed by the contiguous inclined corner surfaces of immediately adjacent modules.
Claim 15
Dependent Claim
23 words
Apparatus according to claim 12, wherein said floor portion is substantially planar and extends to said side edges between said inclined corner surfaces.
Claim 16
Dependent Claim
23 words
Apparatus according to claim 13, wherein said floor portion and said inclined corner surfaces are formed from a folded sheet of metallic material.
Claim 17
Dependent Claim
15 words
Apparatus according to claim 9, wherein said fuel supply member comprises a generally coniform member.
Claim 18
Dependent Claim
25 words
Apparatus according to claim 15, wherein said coniform member comprises openings for allowing passage of air from said lower plenum to said upper combustion space.
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) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |