US1946116A - Gas burner - Google Patents

Description

Feb 6, 1934- J. F. SIN-romI E1' AL 1,945,116

GAS BURNER Filed April 29. 1929 ArroR/vry Patented Feb. 6, 1934 UNITED STATES.

GAS BURNER John F. sinton and Kenneth B. Anderson, 'Los Angeles, Calif., assignors of one-half to Kobe, Inc., Los Angeles, Calif., a corporation of California.

Applieation April 29, 1929. serial No. 358,829

s claims. (c1. 15s-99) Our invention relates to a new type of burner and particularly to the type used for ovens and heaters.

In order that the advantages of our invention may be readily understood we shall discuss briefly the construction of the present type of gas burners. l

Gasburners as used at present consist of burner walls forming a chamber and holes through the walls communicating with the chamber. With this arrangement considerable difficulty isexperienced in causing the burner to light for the full length thereof in case it is lighted at one end, and in causing it to relight when the ame at one end has been blown out. There is also difficulty with the flame blowing' out when the gas is supplied under pressure.

It is an object of our invention to provide a burner which will light easily the full length of the burner when lighted at one end and which will relight when the flame is blown out at one end.

It is a further object of our invention to provide a burner which will not be extinguished when the gas is supplied under high pressure.

It is also an object of our invention to provide a burner in which the combustion will be more complete.

Further objects of our invention will appear hereinafter.

Referring to the accompanying drawing, in which we have shown a preferred form of our invention:

Fig. 1 is a side View of an oven equipped with a burner of our invention showing the utility thereof.

Fig. 2 is a top view of a burner of our invention.

Fig. 3 is a side elevation of a burner showing the appearance of the flame produced thereby.

Fig. 4 is a sectional view taken on the line 4 4 of Fig; 3.

Fig. 5 is a partial sectional View taken on the line 5-5 of Fig. 2.

Referring to Figs. 2, 4 and 5, we have shown a preferred form of our burner. This form consists of a pipe l1 having cylindrical walls which form a chamber 12. The pipe 11 has a lengthwise parti- 50 tion 13 in the interior thereof which divides the chamber 12 into two secondary chambers 14 and 15. The chamber 14 thus formed is closed olf at the ends of the pipe 11 by shoulders 16 formed at the ends of the partition 13, and the chamber 15 is closed at one end by'a cap 17 threadedly attached to the pipe 11 and opened at the other end to the supply pipe 18.

-The partition 13 is provided with openings 19 communicating between the chambers`14 and 15 and of relatively small cross-section thereto. The pipe 11 is provided with slots 20 communicating between the chamber 14 and the outside of the pipe. The slots 20 are `arranged in two'series or rows lengthwise of the pipe and are inclined relatively towards each other so that jets issuing from the slots of one row will contact jets issuing from the slots of the other row. Furthermore, the slots in the two rows are relatively staggered lto each other and have the ends of the slots in one row overlapping the ends of the slots in the other row. This can best be seen by referring to Fig. 2.

The dimensions of the slots 20 formed in a burner of our invention are mainly determinate upon two factors, which are the type of gas to be used and the amount of gas to be consumed. As an example of the relative dimensions of the slots 20 which are used, we will use the slots 20 shown in our drawing as an example. In this burner, the slots 20 were made forty-thousandths of an inch wide and two inches long. Referring to Fig. 5,- they were inclined relatively towards each other so thatl the jets from one series of slots contacted those from the other series at a point C, which was one-half inch from the pipe 11 and on aline A-A, perpendicular to a tangent to the u pipe 11 at a point midway between the external openings B of the slots. The distance B-B was made one-quarter of an inch. It may be stated generally that the width of the slots 20 is made of such a value that the velocity imparted to the gaseous mixture in passing through the slots 20 is slightly greater than the velocity of flame y propagation for the gaseous mixture. This value varies from twenty to nity-thousandths of an inch, depending on the kind of gas used. The 9|- velocity of gas need not be as great as would be required with circular openings, because the walls of the slots provide relatively large cooling surfaces and keep down the temperature of the gas in the slots. The length of the slots dependon 10o the amount of gas to be burned and is made greater when more gas is to be burned and less when less gas is to be burned. In ycase suflicient gas cannot be burned with two series of slots'20, additional series of slots may be added. In this case the additional series should direct the jets thereof so asto contact the other jets at the point C. h

In Fig. 1 we have shown an oven 22 equipped with our burner 23. A gas main 24 supplies gas 110 yns' to an aspirator 25 which mixes it with air. The gmous mixture then passes from the aspirator 25 to the supply pipe 18 and to the burner 23.

-In the operation of our Iburner, the ous mixture is admitted to the chamber 15 from the supply pipe -18. It is next passed through the openings 19 in the partition 13 to the chamber 14 and in so doing, the velocity energy in the chamber 15 is changed to pressure energy in the chamber 14. It is then passed through the slots 20 where it is ignited and produces a ame 21, as shown in. Fig. 3. The inclination of the slots in the one row relatively toward those in the other row and the staggering and overlapping, as I, explained heretofore, produces a continuous sheet of flame 21. 'Ihis produces better combustion, due to the more intense heat developed. Also, the flame readily travels down the sheet of gaseous mixture and ignites it in case the burner is lighted at one end or the iiame at one end should be blown out. There is little'liability of the iiame being blown from the burner, because the jets coming 'together cause a turbulence` which prevents this.

We claim as our invention:

1..v A burner of the class described,.-comprlsing:` walls forming a primary chamber coextensive' with said burner; and walls forming a secondaryl chamber coextensive with said burner, communicating with said primary chamber through openings, said secondarychamber including an outer wall having slots connecting with said secondary chamber, said slots-being in a plurality of series relatively inclined toward a common Y' u 1,946,116 y f plane, and said slots of said series being relatively staggered, so that jets issuing therefrom will contact and form a continuous sheet.

2. A burner of the character described, including: a tubular member having an outer wall with substantially parallel rows of burner slots therein. the slots in said rows extending throughsaid outer wall from the interior to the exterior of said tubular member and being inclined laterally toward a line having the same general extensionas said rows oi slots, and the slots in one row being placed in overlapping relationship to the slots in the row adjacent thereto; and a perforated wall extendingnalong the interior of said tubular member in position -to divide the interior of said tubular member into a fuel delivery e and an elongated chamber communicating with the inner ends of said slots.

3. A burner of the character described, including: a tubular member having an ,outer wall with substantially parallel rows of burner slots therein, the slots in said rows extending through said outer wall from the interior to the-exterior of said tubular member and being inclined laterally toward a line having the same general extension as said rows of slots; and a perforated wall extending -along the interiorof said tubular member in position to divide the interior. of said tubularmember intota fuel delivery passage and an elongated chamber communicating with the inner ends of said slots. l y

JOHN F. SINTON. KENNETH B, ANDERSQN.

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