US1781785A - Gas burner - Google Patents

Description

Nov. 18, 1930. H E, KER'R 1,781,785

GAS BURNER Filed April 9, 1928 e Eril. Erq-6 attoznu 1 vl5 Fig. 2. Fig. 5 is a to Patented Nov. 18, 1930 UNITED STATES PATENT OFFICE `HARRY E. KEER, OF CLEVELAND, OHIO, ASSIGNOR TO THE BAR'BER GAS BURNER j COMPANY, OF CLEVELAND,l OHIO, A CORPORATION lF OHIO GAS BURNER Application led April 9, 1928. Serial No. 268,404.

The present gas burner consists of a small air and gas commingling tube, such as shown and described in my Letters Patent of the United States, No. 1,560,248, dated Nov. 3,

1925, together with a slotted tip or cap for spreading the mixture and producing radially-extending sheets of flame for use in heating appliances, especially water heaters of the storage or tank type.

`0` In the accompanying drawing, Fi l is a perspective view of a gas burner em odying my improvement; Fig. 2 a vertical section of one of the tubes; and Figs. 3 and 4; cross sections on lines 3-3 and 1 -4, respectively of View of a tube, and the dotted lines in this the form of the flame.

The commingling tube A is preferably made of brass, and surmounted by a separate 29 cap B. One end is screw-threaded for attachment with a hollow gas distributing body or manifold C and has a cupped entrance 2 with a small discharge orifice 3 for the gas. Air intake ports 4 extend through the side walls of the tube and open into a central main passage 5 in substantially the same plane as the outlet and of discharge orifice 3.

he gas is jetted with considerable speed upwardly through passage 5, thereby entraining: a certain amount of air with it as predetermined by the size of the air ports. Passage 5 is of relatively small diameter and also of short length so that unless the flow of gas is intercepted at or opposite the mouth of the tube the gas will be projected out of the tube with such velocity under normal gas pressures'that the mixture, if ignited, will be extinguished or blown out immediatley. In the burner shown and described in my Letters Patent referred to herein, two similar tubes are mounted at right angles to bring two streams of gas together. The urpose in that case is to intercept ,the flow o` gas from one tube by from the other tube, thereby deilecting the two jets upwardly and producing a continuous mix and a single large column of flame when operating under normal gas pressure conditions.

In the present instance the mouth of tube gure represent roughly the jet of gas v A is covered by a slotted cap, tip or hollow bulbous member B havin the lower part y of its wall reduced in thickness to sleeve snugly over the upper or mouth end of tube A. The thin wall permits the cap to be affixed tightly upon the tube by a spinning or crimping. operation.

The top of cap B is rounded or ball-sha ed, and relatively narrow slots 6 are sawe at right angles across the top and downwardlyinto the side walls of the cap. These slots intersect each other at the center of the round top of the cap, and a round pin 7 is driven through the opening at the intersection, which pin is of sufficient length. to project downwardly axially of the cap linto the mouth of tube A where it may serve as a central deflector or'spreader element for the jet of gas and entrained air when it is projected upwardly through the tube. Pin 7 is also tapered in part to promote' spreading of the gas, and an enlargement orA head 8 on the upper end of the pin closes the cross slots at their intersection and promotes further spread of the mixture as it passes through the cross slots in the round or bal shaped top of the cap.

Four thin sheets of gaseous mixture are discharged in vertical planes at right angles radially of the tube and four separate sheets of blue flame of substantial size are produced by a single tube constructed as herein described. Accordingly, a single tube may be used as a gas burner, or any number of these tubes may be mounted and grouped together on a pipe or manifold for use in various types of heating appliances.

As proportioned and constructed the tube will function without back-firing, and when burning under normalor usual gas pressure conditions no flame will exist within the tube itself though iame is carried by back drafts or otherwise to the vicinity of or into the air ports. Therefore, this burner requires no guard or other protecting device around or in association withv the air ports.

What I claim, is:

1. AV gas burner, comprisin a relatively small tube having a main disc arge passage of equal cross-sections including an air port, 100

V,2, n n 1,781,785

extending'into said passage and a gas orifice communicating with one end of said passage, together with a slotted deilecting cap surmounting the mouth of the tube.

2. A as burner, comprising a relatively short tu e having a small main passage of equal cross-sections, including air ports and a gas orifice opening into the base of said pas sage, and a slotted cap having a deflecting element of smaller cross-section than said main passage extending axially thereof above and toward the mouth of said tube.

3. A gas burner, comprising a small tube having a main passage, an axial gas orifice, and transverse air intake ports, in combination With a slotted cap having a deflecting pin depending axially therefrom to the height of the mouth lof said passage. l 4. A gas burner, comprising a tube having ,av main passage, an axial gas orifice, and air intake ports, including a cross slotted hollow capof larger cross-section than said main passage, aflixed to the mouth end of said tube and carrying a central spreader pin, said spreader pin beine of such cross section that the cross area o said cap including said spreader pin is not reduced over the cross area of said main passage.

5. A gas burner, comprising arelatively small tube having an axial orifice and transverse air ports, including a hollow bulbshaped member secured 'to the mouth end of` said tube and slotted at right angles across its top, anda tapered spreader pin fixed to said cap atthe intersection of said slots, said spreader pin extending axially through said cap to the top end of said tube.

6. A gas burner, comprising a short tube having a small mainl passage, a gas orifice of small diameter axially at one end of said passage, and small air ports in its side communicating vwith the base part of said passage, together with a separate hollow cap crimped to the mouth end of said tube, having intersecting cross slots, and a spreader" pin extending into said cap and having a short head closing the intersection of said slots.

In testimony whereof I aiiix my signature. s HARRY E. KERR.

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