DE1778071C - Gas burner - Google Patents

Description

35

The invention relates to a gas burner with a primary air inlet and a mixing chamber which is covered at the top by a burner head, which has several metal strips, which with each other Einzelaus'.aß for the gas-luff mixture.

In a known gas burner of this type, the individual outlets are so close to one another that the secondary air supply leaves something to be desired.

The invention is based on the object of creating a gas burner of the type mentioned at the outset, in which the secondary air supply is significantly improved. To solve this problem it is proposed according to the invention is that the metal strips are substantially flat and have the Einzelauslässe limiting spacer, wherein the metal strips in pairs with ih ^r en abut the spacers sides facing away.

Due to the improved secondary air supply to the individual flames, it is possible that gases that too tend to form soot, can be burned with the proposed burner without difficulty be able.

Because the metal strips lie against one another in pairs, warping occurs during operation of the gas burner largely avoided.

The subclaims 2 to 4 relate to further developments of the subject matter of claim 1. The arrangement of the spacers in each row brings an additional improvement in the secondary air supply with himself.

In the drawing, an embodiment of the invention is shown and explained in more detail below.

It shows a fine longitudinal section through a gas burner according to the invention,

F i si. 2 shows a cross section through the gas burner according to F i °. 1 on a larger scale, and

F sharp. 3 "a metal band with serving as a spacer Deformations:

Fig. 4 shows on an enlarged scale: a view from above on the burner outlet.

The gas burner consists of an elongated metal housing 1 with a mixing chamber 2, which is covered in front of a burner head 3. The housing Y r has a closed first end wall 4 and a two: .. end wall 5 with an opening through which a; the mixing chamber 2 extending mixing tube 6 ^ - is pushed. On the second end wall 5 is e; · U-Träs.er7 arranged for an injector 8.

The Cias flow exiting at the injector 8 sucks air into the mixing tube 6 in a known manner. On the side facing away from the end face 5, the mixing tube is provided with openings 9. 10; the length of the pipe extends over about a third of the mishka; merl. Infolee of the resulting turbulence tino a further intimate mixing in the Mischk: ;; mer instead, and after the gas-air-Gcn:; -. has distributed. it flows through the burner head 3.

The metal housing I i- = t at the level of the burner '«, fes 3 is drawn in and uanJ-j Π by a flat parallel side. 12 bounded by strips 13 versr, will. On the end walls 4.5 of the metal housing. ses I there are brackets 14, 15 for 0. Burner head. The brackets 14, 15 are with Du tungsmiueln. z. B. Asbestos occupied. The burner head has on its end faces 4.5 opposite · .; Ends handles 17. 18, which allow easy removal of the burner head3 without tools. e.g. too pure good purposes, enable.

The burner head 3 contains an even number of metal ties 19 and 20 of the same dimensions, ei υ only firmly connected to one another at one end, e.g. R are welded. This can cause the metal bands stretch lengthways. A free space is provided for this longitudinal expansion. The metal strips 19, 20 are each on a S ^ e provided with equidistant spacers, over which no I-lambs can form. The welded end de> - metal strips 19, 20 is with firmly connected to the handle 17, while the handle 18 is provided with a guide in which the loose ends the metal strips 19, 20 are held together in a free, sliding manner. If the burner head 3 with the Handles 18, 17 removed from the metal housing 1 for cleaning purposes and the handle 18 removed is spread, the free ends of the metal strips, so that the metal strips without difficulty can be cleaned.

F i g. 4 shows the arrangement of the metal strips 19, 20 3. in the burner head, the two outer Metallbauder 19 have spacers 22, the less far protruding than the spacers 23 of the inner metal strips 20 This results in the two outer longitudinal sides Einzelauslässe with a V / eite d, for auxiliary flame . The width i /, is smaller than the width d _{i of} the other individual outlets.

Satisfactory results have been obtained with an aspect ratio J ₁ : d, of approximately 1: 2. The spacers of two adjacent metal strips are equidistantly offset from one another and

each in a row perpendicular to the longitudinal direction » of the metal strips 19, 20 arranged. The gas burner can also do without auxiliary flames, so that all individual outlets have the same width.

Fin. 3 shows part of the metal band ^ - *, 19 with Sickenlrmigen spacers 22 along both Noisy edges of the metal band. The spacers shown in pairs; in-

do not smoke, as in Fi
to be orderly.

In the area of the spacers there is no possibility of passage for the gas-air Germs.h. so that there is no flame over the spacers. form.

The metal bands of the burner head 3 Koeni. also arched or arranged in a circle --c::

For this 1 see drawing

Claims (4)

Patent claims: 1. Gas burner with a primary air inlet and a mixing chamber, which is covered at the top by a burner head, the several metal bands has, which form with each other Einzelausllisse for the gas-air mixture, dad ure Ii characterized in that the metal strips (19, 20) are substantially flat and the individual outlets limiting spacers (22.23), the metal strips (19, 20) in pairs lie against one another with their sides facing away from the spacers. 2. Gas burner according to claim 1, characterized in that that the metal strips (19, 20) are fixed at one end and releasable at the other end miteiiu-'der are connected. 3. Gas burner according to claim 1 or 2. daüurch characterized in that the spacers so (22. 23) are formed by deformations on the metal strips (19, 20) " 4. Gas burner according to the claims! to 3. characterized in that the spacers (22. 23) in each case in a row perpendicular.iet.hi are arranged to the longitudinal axis of the metal strips (19, 20)