US2675067A

US2675067A - Gas fueled singeing burner

Info

Publication number: US2675067A
Application number: US168096A
Authority: US
Inventors: Hanson Hartwig Millard; Jr Edward J Funk
Original assignee: CM Kemp Manufacturing Co
Current assignee: CM Kemp Manufacturing Co
Priority date: 1950-06-14
Filing date: 1950-06-14
Publication date: 1954-04-13
Anticipated expiration: 1971-04-13

Description

H. M. HANSON ETAL GAS FUELED SINGEING BURNER April 13, 1954 3 Sheets-Sheet 1 Filed June 14, 1950 n M J m K m m w mu; w. .N V W Apnl 13, 1954 H. M. HANSON ETAL 2,675,067

GAS FUELED SINGEING BURNER Fi led June 14. 1950 s Sheets-Sheet 2 INVENTORS H. M. HANSON EDWARD J. FUNK, JR BY Ap l 1954 H. M. HANSON ETAL GAS FUELED SINGEING BURNER 3 Sheets-Sheet 3 Filed June 14. 1950 INVENTORJ H. M HANSON EDWARD J. FUNK, JR. 4 y. M

HTI'URNQY Patented Apr. 13, 1954 UNITED STATES PATENT OFFICE GAS FUELED SINGEING BURNER Hartwig Millard Hanson and Edward J. Funk, Jr., Baltimore, Md., assignors to The C. M. Kemp Manufacturing Company, Baltimore, Md., a corporation of Maryland Application June 14, 1950, Serial No. 168,096

6 Claims. (01. 158-105) 2 Figure 1 is a front elevational view of the burner.

Figure 2 is an end elevational view thereof. Figure 3 is a partial plan view, partly with the No. 2,410,542. It has been found that certain burner bed removed. modifications in the burner there illustrated per- Figure 4 is a partial longitudinal sectional View mit the omission of the cumbersome water cooltaken along the line 4-4 of Figure 2. ing provisions previously found necessary in the Figure 5 is an enlarged fragmentary top plan flame compression type burner. Water cooling is view of the orifice plate and holder. especially uneconomical since a primary object is Figure 6 is a fragmentary sectional view taken to maintain a very hot flame, while water-cooled along the line 66 of Figure 5. edges or guides tend to cool the flame and waste Figure '7 is a transverse sectional view taken heat. along the line 'l'! of Figure 1.

The fabric in this invention may be drawn Figure 8 is a transverse sectional view taken across the burner in either direction and in conalong the line 8-8 of Figure 3. tact with metallic guides which are kept ade- In the drawings similar numerals refer to quately cooled by air. The guides are spaced on similar parts in the several views. either side from the burner orifices by a pair of The burner beds are made up of refractory beds having refractory surfaces. From the material such as fire bricks l and 2 which are burner orifices a flame from a perfectly'propor preferably trapezoidal in shape as best seen in tioned fuel and air mixture plays on the fabric Figure 7. These are held between the central and is deflected by the fabric in both directions burner body or body member 3 and the acute over the refractory surfaces. These surfaces are angled guide brackets 4 and 5 having ribs 4 and inclined in opposite directions from the burner 5'. By virtue of the trapezoidal shape of the orifices toward the fabric forming therewith a bricks and the acute angle in brackets 4 and 5, p r f W h p d r The pressure of the bricks I and 2 are wedged in place firmly. the flame cau es e o ases to flow in both The end bars Band I close the longitudinal ends directions from the orifices toward the small of the burner between brackets 4 and 5. ends of the We es, h de in rea ing a It will be observed that the inner end walls 8 rubb n efiect as e gases r fur h r m- .30 and 9 of bricks and 2 rest against substantially pressed 0T Confined b the f this is pec vertical and parallel outer body walls l0 and H 3 e 011 t e burner side le d fro t so that the upper refractory surfaces 12 and I3 center, in the direction of fabric web travel. of th bricks are inclined upwardly away from The fabric, therefore, forms one side of a large th body 3. combustion chamber solidly filled with flame Th top walls M and I5 of the body, Figure 8, 11111161 p are substantially at right. angles to the outer The combustion cha ber on 1 y walls H) and H and receive thereon the orifice the nap is not burned but is carbonized by the plate 11; hi is ld d by means of high temperature flame and the resulting Carbon tangularly recessed combustion chamber mem- S b own way y the Combustion gases as they 40 bers or holders l1 fastened by means of screws escape at the side edges of the fabric. It is the :3 t t body A completely combustible hi h t mp r r f t fl m compressed ture of fuel and air is fed to orifices l9 in the tween the fabric and the refractory surfaces orifi e plate is through fuel chamber 20 and Which is SO e t in Singeing and the 0031- intermediate chambers 2i and 2|. After strikpr sion is re r because f the Wedge Shape Of ing the cloth the flame travels parallel with it the areas between the refractory bed and the in opposite directions and is compressed befabric. The metallic supports for the refractory tween th cl th and the refractory surfaces, beds a channelled to minimize the Contact of being forced into the pair of wedge-shaped areas the metal, and to permit air to circulate, to dissiby virtue of t positive d t t pressure Date the heat in the bedf; and Supports- TWO under which the gas-air mixture is delivered to burners are generally sed on any singeing m the combustion chamber, also the travel of the chine, one burner for each side of the fabric. web toward the Wedge area, i th di ti of Other objects and advantages of the invention tmVeL carries t flame along, and Wedges it yet will be apparent from the following description more against th f bric, nd th o p nyin dr w form n a part The lower portion 22 of the body 3 is inclined hereof and in which:

to the outer walls It and II and has a semi-cir- 3 cular bottom wall 23 with inclined

parallel side walls

24 and 25, Figure 8. The right side wall of the upper body angles back to form a baflle 26. The lower body chamber receives a completely combustible mixture of air and fuel from both ends through pipes 21, as shown in Figure 1. The semi-circular bottom wall has a plurality of valves 28 angularly mounted therein at each end of the burner which, when open, admit the coinbustible mixture to intermediate chambers 26. These chambers are separated by partitions 38 which permit the use of the burner for wide or narrower webs, depending upon the opening of the valves 28. These valves close openings 29, Figure 7, in the partition 30 between the fuel chamber 23 and intermediate chambers 2|. As shown there are six of these valves. The partition 30 extends at right angles to the inclined side walls and 25 with bafiie 2 5 opposite opening 29. V

The combustion mixture is fed under pressure through openings 29, and as it comes through at right angles to the partition 3%, the mixture strikes the bafile 25 opposite thereto of intermediate chambers 2 i and flattens out, spreading with equal pressure throughout the compartment of each of the chambers 2!, so that pressure on the plate It is even, for all the orifices thereof.

Between the most central partitions 3B of the burner are smaller openings 3! closely spaced along the length of the central section of the partition 3B. As shown in Figure 8 these openings are located at the uppermost portion of the partition at the juncture thereof with the inclined side wall 25 and are drilled at the maximum possible angle to the orifice plate It. The combustion mixture is thus directed to the right and not parallel to the orifices in the plate 15. It has been found in practice that this arrangement effectively prevents blowing of the mixture through the orifices.

As seen in Figure '7, the brackets 4 and 5 are fastened to the body through flanges 32 thereof by means of bolts 33. The brackets have grooves or channels as cut therein to reduce contact of the brackets with the bricks I and 2. This reduction of contact minimizes heat transfer between the brackets and bricks to aid in maintaining the brackets at a sufliciently low temperature to preclude injury to the cloth and to aid in maintaining the heat of the bricks. The lugs 35 of the burner body to which flanges 32 are bolted arespaced and cut down the heat transfer to the burner and prevent warping thereof, as do grooves 34 in the burner body, and also ribs 4' and 5 prevent warping of the supports 4 and 5.

The fabric indicated by reference numeral 36 rides on the rounded edges or supports 3'! of the brackets 4 and 5 projecting above the surfaces l2 and I3 of the bricks. The flame is completely out off from following the cloth by these projecting edges 31. The forward edge which is contacted second by the fabric web may be said to wipe the flame from the cloth. It will be apparent that the cloth may travel in either direction transversely across the burner.

It will be seen that the burner of this invention holds the fabric the required distance from the beds by means of smooth machined edges which will not snag the cloth. A close regulation of the flame is permitted by the valves admitting the combustible mixture to the burner so that control of the extent of the singeing operation is always obtainable.

What is claimed as new and is desired to be secured by Letters Patent is:

1. A burner to singe a fabric web drawn thereover comprising an elongated metallic air cooled burner having a burning face, a central body member, an elongated burner orifice plate spaced inwardly in the body member from the face, metallic supports on the body member spaced laterally and outwardly from the orifice plate and parallel thereto on each side thereof, the supports having outer edges lying in a plane parallel to the orifice plate and spaced outwardly from the burning face, refractory beds forming the burning face and supported by and between the body member and the metallic supports, the beds at their outer edges adjacent the supports being spaced inwardly from the plane through the said edges of the metallic supports, and then sloping straight inwardly toward the body member forming a broad V-shaped combustion area bounded at its outer sides by said metallic supports, the

supports together forming a clamp to hold the beds in the burner and against the body member, and means to supply a completely combustible mixture to the orifices of said orifice plate, the burner and beds being adapted to have a fabric web drawn transversely thereover, forming therebetween a substantially closed combustion singeing chamber, the flame from the burner being spread to both sides of the burner, the supports being adapted by contact therewith to space the web from the beds and to confine the flame between the supports, the sloping bed last opposite a passing web squeezing the flame closely against the web and the adjacent metallic support edge wiping the flame from the web.

2. The burner of claim 1 including a plurality of substantially spaced lugs extending from each side of the body member to the metallic supports and to which the supports are connected, the lugs being spaced from the refractory beds, whereby air may circulate between the beds and lugs.

3. The burner of claim 1 including a plurality of ribs extending longitudinally of each metallic support, between the support and the refractory beds, to support the beds on th ribs and space the beds from the supports.

4. A burner to singe a fabric web drawn there over comprising an elongated burner having a burner body, a burning face thereon, an elongated burner orifice plate on the burner body spaced inwardly from and longitudinally centrally in the burning face, metallic supports on the burner body spaced laterally and outwardly from the orifice plate and parallel thereto on each side thereof, the supports having edges lying in a plane parallel to the orifice plate and spaced from the burner body, outwardly from the burning face, refractory beds forming the burning face and supported by and between the burner body and metallic supports, the burner body having therein a fuel chamber and a chamber intermediate between the fuel chamber and the orifice plate, the body forming walls for said chambers, a partition angularly disposed with respect to said plate, between the fuel and intermediate chambers, having laterally directed orifices therein, valves in said orifices to control the flow of fuel therethrough, one wall of said intermediate chamber extending in front of the orifices in said partition, constituting a longitudinally extending baiile to break the direct flow of fuel from the valves to the orifice plate.

5. The burner of claim 4 in which the beds are spaced inwardly from the plane through the edges of the metallic supports and form a combustion area bounded at its outer sides by said metallic supports, the supports together formin a clamp to hold the beds in the burner and against the burner body.

6. A flame compression burner adapted to have a fabric to be singed passed thereover comprising an elongated burner having a burner body, a burning face thereon, an elongated burner orifice plate on the burner body spaced inwardly from the burning face, a pair of beds having surfaces of refractory material forming the burning face, one on each side of said plate, and sloping in opposite directions outwardly in V-formation from the plate, the burner body having therein a fuel chamber and a chamber intermediate between the fuel chamber and the orifice plate, the body forming walls for said chambers, a partition angularly disposed with respect to said plate, between the fuel and intermediate chambers, having laterally directed orifices therein, valves in said orifices to control the flow of fuel therethrough, one wall of said intermediate chamber extending in front of the orifices in said partition constituting a longitudinally extending bafile to break the direct flow of fuel from the valves to the orifice plate.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,594,744 Moore Aug. 3, 1926 1,807,703 Osthoff June 2, 1931 2,203,087 Hanson June 4, 1940 2,410,542 Kemp Nov. 5, 1946 2,427,545 Berger Sept. 16, 1947 2,464,333 McGlaughlin Mar. 15, 1949 2,536,609 Kemp et a1 Jan. 2, 1951