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Burner

A technology of burner and fuel supply, which is applied in the direction of burner, combustion method, combustion type, etc., and can solve the problems that flexible pipes are easy to wear, break, and deform.

Inactive Publication Date: 2011-04-06
FIVES PILLARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem with this solution is the flexible duct, which is movable and deforms in heated areas, and is susceptible to wear and tear, especially when the circulating air is electrified by dust

Method used

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Examples

Experimental program
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Embodiment Construction

[0019] The annular duct 1 according to the invention is defined by two tubes 2, 3 whose axes 4 are parallel (here the two tubes 2, 3 are coaxial) and relative to each other along the Move along the axis 5.

[0020] The first tube 2 , here the inner tube 2 , carries flow dividing means for imposing a component according to the tangential direction 7 on the fluid flowing in the conduit. The second pipe 3 (here outer pipe 3 ) is manufactured such that the angle of tangential deflection of the fluid at the downstream end 8 of the pipe depends on the axial position of the second pipe 3 relative to the first pipe 2 .

[0021] As seen in FIGS. 1 and 2 , in these examples the second tube 3 includes a drive portion 9 that drives the fluid out of the diverter member, thereby allowing the fluid to substantially escape from it at the downstream end 8 of the conduit. The same tangential offset when exiting the diverter member. Through the axial displacement of the driving part 9 relative...

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PUM

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Abstract

The invention relates to a burner comprising several substantially concentric channels, one (1) of which is arranges outside of all fuel supply conduits and is delimited by two pipes (2, 3), whose axes (4) are placed in a parallel position and which are movable with respect to each other. According to said invention, diverting members used for imparting a tangential component (7) to a fluid flowing in the channel (1) are carried by the first pipe (2) and are fixed thereto, the second pipe (3) comprises a drive portion (9) for driving the fluid outside the diverting members and the angle of tangential deviation of the fluid at the downstream end (8) of the channel (1) depends on the axial position of the second pipe (3) with respect to the first pipe (2).

Description

technical field [0001] The present invention relates to an annular duct and a burner comprising said duct, said burner being a primary air burner, a total air burner or a gas burner and the like. Background technique [0002] Annular ducts of the stated type, defined by two tubes whose axes are parallel and axially shifted relative to each other, are known in the art, said annular duct having a first tube carrying a tangential A component is applied to the flow diverting member of the fluid flowing in the conduit. [0003] Said ducts are often used in burners, especially primary air burners such as those described in the EP 967434 application. Indeed, in modern burners such as those described in this application, in order to improve combustion, the fuel supply duct is surrounded by two peripheral primary air supply ducts that create a swirl (or helical flow), one of these ducts not including Dividing members so that the air circulating in said ducts escapes from said ducts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C7/00
CPCF23C7/008F23C7/004F23C7/006F23C2201/20F23D17/005F23D1/00F23D2201/20F23N1/007
Inventor 让-克洛德·皮亚尔
Owner FIVES PILLARD