US1932740A

US1932740A - Gas burner

Info

Publication number: US1932740A
Authority: US
Publication date: 1933-10-31
Anticipated expiration: 1950-10-31

Description

Oct. 31, 1933. E 1,932,740

GAS BURNER Filed July 20, 1932 Hu? KERR Momma;

Patented Oct. 31, 1933 UNITED STATES PATENT OFFICE GAS BURNER.

Harry E. Kerr, Cleveland, Ohio, assignor to- The Barber Gas Burner Company,

Ohio

Cleveland,

Application July 20, 1932. Serial No. 623,471"

2 Claims. (Cl. 158 116) substantially as shown and described herein and more particularly pointed out in the appended claims. I In the drawing accompanying this application:

Figure 1 is a sectional view through a jet.

burner showing a pilot light according to the invention supported thereby, which pilot light is utilized for automatically controlling the flow of gas to said burner;

Figure 2 is an enlarged sectional view of the pilot light with its burner tip shown in elevation; 4

Figure 3 is an enlarged sectional view through the burner tip of the pilot light; and

Figure 4 is a bottom view of the said tip.

Referring more particularly to the drawing the hollow cast burner body or manifold A comprises top and bottom walls 1 and 2 and side wall 3 respectively. A body A embodies a gas chamber 4 and a feed channel 5 communicating therewith through opening 6 in the bottom wall of said chamber. The top wall 1 of body A is provided with a series of protuberances or raised portions 7, uniformly spaced with respect to each other. These protuberances are perforated for communication with the gas chamber 4 and carry at their top portions a series of commingling tubes or jets 8, preferably made of brass and surmounted bycaps 9 of rounded or ball-shape and provided with relatively narrow intersecting slots 10, sawed at right angles across the top and downwardly into. the side walls of the cap.

The top wall of burner body A is formed with a centrally disposed threaded opening 12 in which a threaded apertured guide unit 14 is screwed. An elongated valve plunger 15 extends through the guide unit. 14 in axial alignhorizontally disposed compensating spring extension 1'1, secured at its .outer endto a bi-metal car or member 18, and engaging an annular groove 19 in the upper end of the valve with its unurcated end. The bar 18 is connected to the vertical arm 20 of a bracket 21, which bracket is preferably an integralpart or the main burner A, any suitable fastener such as a screwzz being employed to secure bar 18 in place on the bracket arm. The supporting bracketzl has a horizontally disposed arm 23 which is formed with a round enlargement- 24 centrally apertured as at 25 to snugly receive a pilot light 26. The lower end of the pilot light is connected by suitable piping 27to the main gas supply, not shown, and the upper end of the pilot jet 15 positioned directly beneath and in linewith the bi-metal bar 18. A deflector or shield 28 protects bar l8 from the direct effect of the name by deflecting the flame laterally and thence upwardlyaround and out of contactwith the bar. The .deflector is formed at its outer end with a flat portion 29 width is secured to the supporting bracket 21 by means of the screw 22, which screw also serves to attach thebar 18 in place.

A guard plate 30 directs the flame of the pilot jet 26 upwardly. toward the'tips of burner jets or tubes 8. Pilot light 26 embodies a commingling tube or jet 31 preferably of brass, which tube is surmounted by a separate hollow burner tip 32,

preferably made of fire clay or other unburnable material. The bottom end of commingling tube 31 is screw threaded, as at 33 for attachment to piping 27 and has a cupped entrance 34 extending into a small discharge orifice 35 for gas.

Air intake ports v36 extend through theside walls of the jet into a central main passage 3'7. .The top of burner tip 32 is enlarged and rounded or ball-shaped as at 38,'and extends laterally slightly beyond and" in overhanging relation with respect to the circumferential side wall of hollow neck portion 39 of said tip, and a rounded groove or channel 40 is circumferentially arranged between the enlarged top 38 and neck portion 39.. Groove 40 thus separates said top and neck portions, and the-said top portion forms a dome-shaped covering or:head' for'kthe groove. Neck portion 39 is hollow thus provld ing a rounded mixing chamber 41 for gas enter;

'ing thereinto from main passage Stand a-serie's I r of symmetrically arranged upwardly and out.

wardly. inclined passages 42' formed partially in the upper extremity of hollow neck portion 39- and partially in the solid head portion 38, connect chamber 41 with rounded channel or groove 40. The upper walls of inclined passages 42 merge with the upper outwardly curved portion of the wall of channel 40 and cooperate with the latter to guide the gas emitting through said passages laterally on a sweeping curve to eliminate turbulence in and cause a lateral spreading of the gas .rlame. As passages 42 extend through the inner wall of chamber 41 from a point close to the top thereof, they assist in directing the flow of gas from said chamber without danger of forming undesirable. gas or air cushions, which would tend to cut down the flow of gas through the pilot jet and lessen the emciency of the pilot:jet.

Having thus described my claim is: e

1. A pilot light for gas burners including a tubular gas and air commingling tube, and an integral burner tip memberseated upon the upper end of said tube, said tip member having a neck portion extended into said tube and embodying a rounded chamber open at its bottom, a dome-shaped head portion laterally extendedbeyond the circumferential wall of said invention, what I neck portion, a connecting portion between said head portion and neck portion including an annular groove making the cross section of said connection smaller than the cross section of said neck portion, a series of upwardly inclined narrow passages between said chamber and said annular groove terminating below and adjacent to the bottom face of said head portion to promote baiiling and spreading of the gas and air streams emitted through said passages.

2. A pilot light for gas burners including a tubular gas and air' commingling tube, and a burner tip member seated upon the upper end of said tube, said tip member including a neck portion extended into said tube and embodying a rounded chamber open at its bottom, a domeshaped head portion laterally extended beyond the circumferential wall of said neck portion, a connecting portion between said head portion and said neck portion including an annular channel and a series of upwardly inclined narrow passages between said chamber and said channel terminating within said annular channel in alignment with. the upper wall thereof to promote baflling and sweeping spreading of the gas and air streams emitted through said passages.

HARRY E. KERR.