FR2690975A1 - Gas burner. - Google Patents

Abstract

Gas burner with several multiple burner tubes which are arranged at a distance from nozzles of a gas distributor tube, through which they are supplied with gas, and held in a wall of the combustion chamber. To guarantee ignition on such a burner, the multiple nozzle tubes (1) arranged one next to the other form between them an acute angle alpha, and each an obtuse angle beta with the longitudinal axis (8) of the gas distributor tube (4).

Description

The present invention relates to a gas burner with several tubes

  multiple nozzles which are arranged at a certain distance from the nozzles of a gas distributor tube, by which they are supplied with gas, and maintained in a front wall of the combustion chamber.

  With burners fitted with large multi-nozzle tubes

  tiples arranged accordingly at greater distances

  of them, and who, on conventional burners,

  are always parallel to each other and perpendicular

  of the gas distributor tube, serious problems

  mes arise at the time of ignition of the burner with regard to the instantaneous ignition of all the tubes with multiple nozzles. This results, if necessary, in very violent phenomena of untimely combustion if the gas

present lights up with delay.

  From DE-PS 12 08 712, we know a burner in the-

  which multi-nozzle tubes have, at a given point, an enlargement which reduces the distance between

  them and is provided with a slot serving as a gas nozzle and

  tending to the edge of said widening In addition, DE-OS

  37 02 396 describes a gas burner with an ignition bridge

  ge which, at one end of the multi-nozzle tubes, fa-

  promotes progressive ignition by obstructing the

  rant of secondary air Both solutions require a

  complicated construction and are not sufficiently su-

  res when the distance between the multiple spout tubes

is important.

  The present invention therefore aims to avoid these

  disadvantages and to propose a burner of the aforementioned kind

  tee in which the progressive and instantaneous ignition of all

  multiple spout tubes is guaranteed.

  In accordance with the invention, this object is achieved by 2- the fact that the multiple spout tubes arranged one next to the other form an acute angle between them, and each a

  obtuse angle: with the gas distributor tube.

  It is thus guaranteed that each multi-nozzle tube

  ples approaches one of its ends the neighboring tube, which appreciably promotes the passage of flames from a tube to

  the other so as to guarantee rapid ignition of the whole

  ble of the burner tubes In addition, there is no more

  gas mulation near the burner at the time of

  lighting, which also prevents accidental combustion of the gas. Because the multi-nozzle tubes engage in elliptical holes in the front wall of the combustion chamber, it is very simple to mount the multi-nozzle tubes at an angle to the front wall of the combustion chamber,

  which results in a simple construction of the burner.

  The gas distributor tube with flats

  inclined and perpendicular to the long axes

  tudinal tubes with multiple nozzles, and provided with holes for gas nozzles, is a very simple solution

construction.

  Another advantageous improvement results from the fact that the longitudinal axes of two tubes with multiple spouts

  neighbors form an angle of 150 to 450 between them,

ference of 300.

  Hereinafter, the invention is described in more detail with the figures of the drawing in support, which show:

  Fig 1, a schematic plan view of a burner se-

according to the invention, and

  Fig 2, a schematic front view of the following burner

before fig 1.

  The same references in the figures designate the same

my details.

  A premixed gas burner 10 is housed in a combustion chamber 2 with a rear wall 9, 3-side walls 11 and a front wall 3, and comprises a multitude of multiple nozzle tubes 1, i.e. cylinders

  hollow provided at their upper face 12 with gas burners 13.

  These multiple nozzle tubes 1 engage in el-

  Liptics 7 of the front wall 3 of the combustion chamber. The multiple nozzle tubes 1 form between them

  acute angles ô With the longitudinal axis 8 of a tube

  gas distributor 4, they form obtuse angles,

  longitudinal axes of the tubes 1 forming a preferred angle

  rence of approximately 75 The angle <is approximately 30 On this gas distributor tube 4 are provided nozzles 5 projecting from inclined flats 14, which are arranged in principle coaxially with respect to the central axes of the tubes with multiple spouts 1 correspondents The tubes 1 are fixed to the front wall 3 of the combustion chamber by

  welds 6 along the edges of the holes 7.

  As can be seen in fig 1, tubes with multiple spouts

  tiples 1 neighbors are strongly brought together by one of their ends, which guarantees a safe ignition and

fast burner 10.

-4-

Claims (4)

R E V E N D I C A T I O N S   1 Gas burner with several tubes with multiple nozzles which are arranged at a certain distance from the nozzles of a gas distributor tube, by which they are supplied with gas, and maintained in a front wall of the combustion chamber, characterized by   the fact that the multi-nozzle tubes (1) have   side by side form between them a year-   gle acute i, and each an obtuse angle d with the tu- be gas distributor (4).   2 gas burner according to claim 1, character-   laughed at by the fact that the multiple nozzle tubes (1) engage in elliptical holes (7) formed in   the front wall (3) of the combustion chamber.   3 gas burner according to claim 1, character-   laughed at by the fact that the gas distributor tube (4) has inclined flats (14), perpendicular to the longitudinal axes of the multi-nozzle tubes (1), and which are provided with orifices for the gas nozzles (5).   4 gas burner according to one of claims 1 to   3, characterized in that the axes longitudi-   nals of two multiple nozzle tubes (1) for-   between them an angle of 150 to 450, preferably of 300.