US1968731A - Gas burner - Google Patents

Description

J. s. ZiNK GAS BURNER July 31, 1934.

Filed May 10. 1935 INVENTOR 5 5.21/7,

ATTORNEYS Patented July 31, 1934 NT; OFFICE 12 Claims.

My invention consists in new and useful improvements in gas burners and relates more particularly to that type of gas burner used in connection with furnaces or the like, having for its object to provide a compact and economical burner which produces a maximum amount of heat at a minimum cost.

In the past numerous attempts have been made to construct burners for this same general use but such burners have proven unsuccessful mainly because oi? the fact that in order to obtain a short flame, the gas ports in the burner head were necessarily small under which conditions the combustion or burning did not start immediately at the burner head. This caused the burner to blow out and also to be extremely noisy.

To overcome this disadvantage, my improved burner head is constructed in a unique manner, comprising two rows of gasports drilled at such angles with respect'to oneanother and to the top of the stack that the gas jets impinge at points close to the burner head, producing flat radiating jets which start burning at the points of impingement. With my burner head the gas is burned with an extremely short flame in substantially the. form of a hollow cone radiating from a point immediately adjacent the burnerhead and just clearing the top of the burner stack, the tendency to blow out or blow away from the burner head being overcome by the unique drilling of the apertures and the unclesirable noise being eliminated to a large degree.

Another object of my invention is to so construct the burner that the necessity of pre-mixing the air and gas is eliminated thus avoiding a source of trouble heretofore encountered with the conventional type of gas burners.

A further object of my invention lies in its simplicity of construction and the ease with which it may be installed and applied to conventional coal or oil burning furnaces.

With the above and other objects in view which will appear as the description proceeds, my invention consists in the novel features herein set forth, illustrated in the accompanying drawing and more particularly pointed out in the appended claims.

Referring to the drawing in which numerals of like character designate similar parts throughout the several views,

Fig. 1 is a'perspeotive view of my complete burner structure.

Fig. 2 is a longitudinal sectional view taken on, line 2--2 oi Fig. 1 showing a portion of the furnace wall diagrammatically.

Fig. 3 is a cross section of the burner head showing the two rows of angularly disposed ports.

Fig. 4 is a top plan view and Fig. 5 is a fragmentary end view of the structure from the inlet end of the gas conduit illustrating the restricted orifice in the gas conduit. 5

In the drawing, 1 represents a substantially elongated rectangular body or casing composed of any suitable heat resisting material closed at its longitudinal extremities by end walls 2 and 3. Adjacent the end 3 of the casing 1, its upper 7 face is provided with an opening 4 which 'is surrounded by a vertically extending cylindrical, relatively short sleeve or burner stack 5 secured to the casing 1 by any suitable means such as welding or the like. The opposite end of the casing 1 has in its upper face a damper 6 which is pivotally mounted transversely of the casing as at 7 and provided with a thumb-screw 8 to facilitate its adjustment. If desired, a suitable lug 9 may be provided to assist in opening and 30 closing the damper.

10 represents a gas conduit which extends longitudinally through the casing 1 and is located substantially centrally thereof, one end projecting through the end wall 2 and being 35 threaded as at 11 to accommodate a suitable gas connection. This projecting end of the conduit 60 of the burner head,

10 is provided with a restricted orifice 12 (Fig.-

5) to control the maximum capacity of the burner.

The opposite end of the conduit 10 terminates in an upwardly extending portion 13 arranged at substantially right angles to the remainder of the conduit, its upper extremity being threaded to receive a burner head 14 which is adapted to lie within the confines of the sleeve or burner stack 5 and below the upper extremity thereof. This burner head consists of a body portion 15, the upper end of which is beveled or substantially conical in shape, being closed at its upper extremity. The beveled portion of the burner head ,15 is provided, with two oircumferentially extending rows of apertures 16 and 17, the former being preferably drilled at an angle of substantially ninety degrees from the vertical and the latter being drilled at an angle of substantially twenty degrees from the vertical, as clearly shown in Fig. 3. The outer face of this conicalportion of the burner head is provided with a series of grooves 18 which extend longitudinally of the 119 19 represents a spider or yoke, the outer edges of which rest upon shoulders formed by the an-.

nular edge of the opening 4, its central portion being adapted to closely engage the upwardly extending portion 13 of the conduit 10, whereby when the burner head 14 is screwed onto the upturned end of the conduit, its lower edge is supported by the yoke 19.

In operation, the casing 1 is installed in the wall of a conventional furnace either by providing a suitable opening in such wall or by bricking the casing into the wall with the burner end located substantially centrally of the furnace. The damper 6 is adjusted to provide for the admittance of the proper quantity of air into the air chamber formed by the casing 1 and the thumbscrew 8 is tightened to maintain such adjustment. Gas under pressure flows through conduit 10 Iromthe end 11, its capacity being controlled by the restricted orifice 12, said gas being discharged through the respective apertures 16 and 1'7 in two annular rows oi! jets which impinge close to the burner head 14 and. produce a series of flat jets which start to burn at the points of impingement in a radiating flame which just clears the top oi! the burner stack 5. The air admitted through the chamber formed by the casing 1 is thus forced directly through a thin sheet of gas caused by the impinging jets, whereby the tendency to blow out or blow away from the burner head is overcome, the mixture of air and gas burning in an extremely short flame in substantially the form 01 ahollow cone starting immediately adjacent the burner.

While I have shown and described specific angles at which the apertures in the burner head are drilled, it will be noted that such angles may be slightly varied to suit conditions but in order to be effective, I have found that such gas ports must be drilled in sucha manner that the stream of gas strikes the air for combustion at an angle from the vertical oi. at least fifty degrees and not more than seventy-five degrees.

It will thus be seen that with a gas burner constructed and installed in the manner shown and described, no pre-mixing of the air and gas is required, the only air necessary for combustion being provided through the damper opening 6 and forced through the chamber in casing 1 and directly through a thin sheet or gas in the stack 5, thus providing a short and uniform flame and eliminating the disadvantages of blowing out and blowing away from the burner, which have been prevalent in-burners or this same general type in the past.

From the foregoing it is believed that the construction and advantages of my invention may be readily understood by those skilled in the art without further description, it being borne in mind that numerous changes may be made in the details disclosed without departing from the spirit of the invention asset out in the following claims.

What I claim and desire to secure by Letters Patent is:-

1. In combination with a burner stack, a burner head in said stack terminating below the upper extremity of the latter, a conduit for supplying gas to said burner head, said burner head being provided with two vertically spaced rows 01 ports,.the

upper row of ports radiating substantially horizontally trom the burner head, and the lower row of said ports radiating from said burner head in an upwardly and outwardly inclined direction, the axes of said last named ports intersecting the plane of the top of said burner stack at points lying within the radial confines oi the latter.

2. The combination as claimed in claim 1, wherein the ported portion of saidburner head is substantially cone-shaped.

3. The combination asclaimed in claim 1, wherein the ported portion of said burner head is substantially cone-shaped and said gas conduit is provided with a restricted orifice.

4. A gas burner comprising a burner stack, a burner head lying within the radial confines of said stack and terminating below the upper extremity thereof, means for conducting gas to said burner head, an air chamber in communication with said stack and means for regulating the admission of air to said chamber, said burner head being provided with two sets of vertically spaced ports, the upper set of ports radiating substantially horizontally from said burner head and the lower set or said ports radiating from said burner head in an upwardly and outwardly inclined direction, the axes of said last named ports intersecting the plane of the top oi! said burner stack at points lying within the radial confines of the latter.

5. In combination with a burner stack, a burner head in said stack terminating below the upper extremity of the latter, a set of substantially horizontally disposed ports in said burner head, a second set of upwardly and outwardly inclined ports in said burner head below said first named 110 ports, and a conduit for supplying gas to said burner head, the angular. relation oi! adjacent ports of said sets with respect to one another and to the top of said stack being such that jets of gas discharged from said: respective sets of ports impinge close to the burner head and produce a hollow. substantially conical flame which just clears the top of the stack, said flame radiating from and starting to burn at said points 0! impingement.

6. In combination with a burner stack-adapted to convey a stream of air, a burner head in said stack terminating below the upper extremity of the latter, a set of substantially horizontally disposed ports in said burner head, a second set of upwardly-and outwardly inclined ports below said first named ports, and a conduit for supplying gas to said burner head, the angular relation of adjacent ports of said sets with respect to one another and to the top of said stack, and with respect to the flow of a stream oi! air through the latter, being such that jets of gas discharged from said respective setsot ports impinge while intersecting said stream of air and produce a hollow substanis substantially cone-shaped, the upper set of said ports being drilled at an angle or substantially 90 degrees from the vertical and the lower set being drilled at an angle of substantially 20 degrees from the vertical.

8. The combination as claimed in claim 6, 5 wherein the ported portion of said burner head is substantially cone-shaped, the upper set of said ports being drilled at an angleot substantially 90. degrees from the vertical and the lower set being drilled at an angle or substantially 20 15 degrees from the vertical, and a series of longitudinally extending grooves in theconical face of said burnerhead, joining the respective upper and lower ports therein.

9. A gas burner, comprising an air chamber terminating at one end in a communicating upturned burner stack, means for regulating the ads missionot air to said chamber, a burner head within said stack terminating below the upper extremity of the latter and a conduit for supplying gas to said burner head, said burner head being provided with at least two sets converging discharge ports drilled at such angles relative to one another and to the top of said stack, and relative to the flow of a stream of air through the latter, that jets of gas discharged from the respective ports impinge while intersecting said stream of air and produce a hollow substantially conical flame which just clears the top of the stack, said flame radiating from and starting to burn at said points of impingement.

10. A gas burner as claimed in claim 9, wherein, saidair chamber is substantially elongated and of relatively large cubical content with respect to the burner stack, said gas conduit being provided with a restricted orifice.

11. A gas burner as claimed in claim 9, wherein said burner head is provided with two sets of vertically spaced discharge ports the upper set of said ports being drilled at an angle of substantial- 1y 90 degrees from the vertical and the lower set being drilled at an angle of substantially degrees from the vertical.

12. A gas burner comprising a burner stack, a burner head in said stack terminating below the upper extremity thereof, means tor conductstantially conical flame isproduced, which just clears the top of the stack and radiates from and starts burning at said point of impingement.

JOHN S. ZINK.

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