Metal burner membrane

Inactive Publication Date: 2006-11-09
NV BEKAERT SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] It is a general object of the present invention to eliminate the drawbacks of the prior art burners. It is a first object of the present invention to provide a burner with an increased range in output power. It is a second object of the present inv

Problems solved by technology

The first drawback of these burners is that for a given dimension, they do not allow for a large range in output power at low power, i.e. if the gasflow is low, there is a risk for flame extinguishment, and at high powers, i.e. if the gasflow is high, there is a risk that the flame blows off.
This results in the need of a range of burners that differ only slightly in dimensions (e.g. in their height) adapted to specific power rati

Method used

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Examples

Experimental program
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Example

[0055] An alternative to the third embodiment is depicted in FIG. 5(c). Like parts of the burner membrane according the third embodiment are identified with primed numbers. The transition region 502′ is in the form of a circular ridge. The top of the ridge has a radius of curvature 506′, which turns out to be the smallest radius of curvature of the transition region.

[0056] In a fourth preferred embodiment illustrated in FIGS. 6a and 6b, again a stainless steel wire mesh 610 was used. The base section 601 has a very large minimum radius of curvature, the transition region 602 has a minimum radius of curvature indicated by 606, while the dosing section vanishes to a single line 604. The minimum radius of curvature of the transition region 606 is 9 mm although values from 3 mm upward are also possible.

Example

[0057] An alternative to the fourth embodiment is depicted in FIG. 6(c). Again like parts of the burner membrane according the fourth embodiment are identified with primed numbers. The transition region 602′ is in the form of a ridge extending substantially the length of the longitudinal burner membrane. The top of the ridge has a radius of curvature 606′, which turns out to be the smallest radius of curvature of the transition region. Again the dosing section vanishes into a line 604′.

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PUM

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Abstract

The invention relates to a gas burner comprising a metal burner membrane having a base section (201), a dosing section (203) and a transition region in between (202). The shape of the membrane is such that the smallest radius of curvature of the transition zone is smaller than the smallest radius of curvature of the base section. Furthermore the burner membrane uninterruptedly flows over from the base section through the transition region into the closing section. The advantages of such a gas bunner am amongst others a large dynamic power range, an improvadflame front and a low production cost.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a gas burner comprising a metal burner membrane. BACKGROUND OF THE INVENTION [0002] Prior art gas burners with different shapes and different burner membranes have been described e.g. in WO 02 / 44618 A1 and WO 01 / 79756 A1. [0003] The first drawback of these burners is that for a given dimension, they do not allow for a large range in output power at low power, i.e. if the gasflow is low, there is a risk for flame extinguishment, and at high powers, i.e. if the gasflow is high, there is a risk that the flame blows off. This results in the need of a range of burners that differ only slightly in dimensions (e.g. in their height) adapted to specific power ratings: a second drawback. [0004] A third drawback of these burners is that different parts have to be punched, formed and welded together which leads to expensive burners. The welding seams themselves are weak points in the burner, because they are most susceptible to fail...

Claims

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Application Information

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IPC IPC(8): F23D14/46F23D14/14
CPCF23D14/145F23D2212/201F23D2203/1017
Inventor LAMBERTS, DINANDVAN GOOR, ALFREDFOLKERS, GEERT
Owner NV BEKAERT SA
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