EP0304532A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A combustion plant including at least one tubular furnace
Assignee: Individual
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Filing: 1987-08-17
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Granted: —
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Expires: 2007-08-17
Abstract
Abstract A tubular furnace (10) having a burner (11) mounted at one end is provided with means for receiving gaseous fluid taking part in the combustion, while the opposite end of the furnace is connected to an after-combustion chamber by way of a restricted passage. The inlet (22) for the gaseous combustion fluid is slot-formed, and connected tangentially to the tubular furnace (10), and an axially displaceable disc (23), having a centrally located opening (23a) surrounding the burner (11) is arranged for dividing the gaseous fluid into a primary part directed to the burner, and a secondary part forming a rotating flow within the tubular furnace.
Inventors
- 👤 Nils ÖSTBO
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
F; F23; F23C; F23C6/00; F23G; F23G5/00; F23G5/44; F23G5/46; F23G7/00; F23G7/06; F23G7/061; F23G7/065; F23G7/066; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A combustion plant including at least one tubular furnace (10), having at one end a burner (11) provided with means for receiving gaseous fluid taking part in the combustion, and having its opposite end connected to an after-combustion chamber (13), by way of a restricted passage (12), characterized in the inlet (22) for the gaseous combustion fluid being slot formed, and connected tangentially to the tubular furnace (10), and in an axially displaceable disc (23) having a centrally located opening (23a) surrounding the burner (11), for dividing the gaseous fluid flow into a primary part to the burner and a secondary part forming a rotating flow within the tubular furnace.
Claim 2
Dependent Claim
110 words
A combustion plant including at least one tubular furnace (10), having at one end a burner (11) provided with means for receiving gaseous fluid taking part in the combustion, and having its opposite end connected to an after-combustion chamber (13), by way of a restricted passage (12), characterized in the inlet (22) for the gaseous combustion fluid being slot formed, and connected tangentially to the tubular furnace (10), and in an axially displaceable disc (23) having a centrally located opening (23a) surrounding the burner (11), for dividing the gaseous fluid flow into a primary part to the burner and a secondary part forming a rotating flow within the tubular furnace.
Claim 3
Dependent Claim
37 words
A combustion plant according to claim 1, characterized in the disc (23) being provided with a funnel-shaped member (24) directed axially into the tubular furnace (10) for initially keeping the primary and the secondary gas flows apart.
Claim 4
Dependent Claim
69 words
A combustion plant according to either of claims 1 or 2, characterized in the after-combustion chamber (13) having a diameter noticeably exceeding that of the tubular furnace (10), and having at least at parts of its envelope shell (27), slots (28) being directed tangentially outwards in the direction of the rotation of the combustion gas flow, the slots (28) communicating with a collecting chamber (29) enclosing the after-combustion chamber.
Claim 5
Dependent Claim
62 words
A combustion plant according to any of the preceeding claims, characterized in the after-combustion chamber (13) communicating with a number of smoke gas tubes (14), arranged concentrically around the tubular combustion chamber (10) and connected to a collecting chamber (15) adjacent to the burner end, the space surrounding the smoke gas tubes (14) forming part of a water circulating system (19, 20).
Claim 6
Dependent Claim
62 words
A combustion plant according to any of claims 1-3, characterized in the gaseous fluid being led in a path around the tubular combustion chamber and then through tubes (14a) being parallel to the tubular furnace (10) before it reaches the burner (11), the combustion products being transferred from the after-combustion chamber (13) to a separate heat exchanger (34) of the condensing type.
Claim 7
Dependent Claim
43 words
A combustion plant according to any of the preceeding claims, characterized in the after-combustion chamber (13) being common for two aligned combustion tubes (10) directed towards each other, and arranged so the combustion gases entering the chamber (13) rotate in the same direction.
References Cited (Backward Citations)
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