US2532439A - Sheet-metal gas burner - Google Patents

Description

Dec. 5, 1950 A. H. BERGER 2,532,439

SHEET METAL GAS BURNER Filed Dec. 22, 1945 2 Sheets-Shet 1 FI QQ4- INVENTOR.

1.4L BERT H Bream A True/v5 Y5 Dec. 5, 1950 Filed D60. 22, 1945 A. H. B ERGER SHEET METAL GAS BURNER 2 Shgets-Sheet 2 Fig.8-

INVENTOR. /4L 55/27 A. 552m Patented Dec. 5, 1956 SHEET-METAL GAS BURNER Albert H. Berger, Rocky River, Ohio, assignor, by mesne assignments, to The Consolidated Iron- Steel Manufacturing Company,

Cleveland,

Ohio, a corporation of Ohio Application December 22, 1945, Serial No. 636,627

4 Claims.

The invention relates to burners for fuel gas combustion, and particularly to novel burners of this nature especially adapted for use in a domestic gas stove.

An object of the invention isto provide a burner structure producible from sheet metal in a form which can be readily and rapidly fabricated from available materials, and at low cost.

Other objects and advantages will be apparent from a study of the following specification in conjunction with the attached drawings, in which:

Fig. 1 is a top plan view of a burner constructed in accordance with the teachings of the present invention; Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig. 1; Fig. 3 is a view, taken in section similarly to Fig.2, but showing the cover and base members slightly separated preparatory to assembly thereof; Fig. 4 is an end view as seen from the position ofthe line of Fig. 2; Fig. 5 is a sectional view, taken similarly to Fig. 2, but showing a slightly modified form of the invention; Fig. 6 is a top plan view, similar to Fig. 1 in some respects, but showing another slightly modified form of the invention; Fig. '7 is a vertical sectional view taken on the line of. Fig. 6; Fig. 8 is a perspective view of one of the baflle members shownin Figs. 6 and 7 Fig. 9 is a top plan view of a fragmentary portion of another burner embodying my invention; and Fig. 10 is a sectional view taken on the line |0||] of Fig. 9.

Before the present invention here illustrated is described in detail, it is to be understood that the invention here involved is not limited to the details of construction or the specific arrangement of parts here illustrated or described, as the invention obviously may take various forms. It also is to be understood that the phraseology or terminology herein employed is for the purpose of description and not of limitation, the scope of the present invention being defined in the appended claims. I

Referring first to the embodiment shown in Figs. 1 to 4 my novel burner I0 is assembled by uniting two sheet metal elements, conveniently shown as separated in Fig. 3, the elements being hereinafter identified as a base II and a cover l2. The cover is of banjo-like form, having a relatively flat top wall I3, and a peripheral depending wall It which is outturned at the bottom to provide an attaching flange I5. The base is shaped similarly to the cover Ill, when viewed in top plan, but is slightly larger in overall dimensions than the cover, the excess stock 2 thus provided being turned upwardly and inwardlyat ll (as indicated in dotted line in Fig. 3, and in full line in Fig. 2) to hold the cover and the base in fixed assembly.

The central chamber thus provided between the cover and the base has a large, generally circular portion 2|], a smaller end portion 2|, and a connecting neck portion 22. In: the preferred embodiment here shown, the wall l3 of the cover is provided with an aperture 24 centrally disposed with respect to chamber portion 2%. Axially aligned with aperture 24 in the cover is an aperture 25 in the base The circumferential edge of aperture 25 is forced upwardly, by pressing, spinning, stamping, or otherwise, and is outturned to provide a flange 26,-as shown in dotted line in Fig. 3 and in full line in Fig. 2. This flange is crimped around the edge of the aperture 24, thereby providing a central columnar support consisting of the tubular portion 21 which was upturned from the base. This structural feature greatly strengthens the burner as sembly.

The wall of end chamber portion 2| is provided with an inlet port 30 for the reception of those familiar with burner construction that the mixing plate rotates on a pivot consisting of screw ,35, the plate being adjustably fixed in any suitable position for admitting the desired amount of air to the burner chamber.

The top wall of chamber portion 20 is provided with. a spaced series of radial ridges 31, perforated at 38 to permit discharge of the fuel mixture, said mixture being of course ignited immediately above ridges 31. 1

The structure shown in Fig. 5 is generally similar to that of the preceding figures, except that in Fig. 5 the mixing plate 33 is situated on the-base H which forms the bottom wall of chamber 2|.

Figs. 6 to 8 show a burner similar in many respects to that shown in the preceding views, but I have added a plurality of battles 40 of semicylindrical form, each baflie having a base flange 4| for attachment by welding or otherwise to an inner wall of chamber portion 20. Preferably, as here shown, these bafiles are spaced around the central columnar elements, and are placed one between each adjacent pair of ridges structures are readily assembled and are surprisingly strong and sturdy. They are much lighter and cheaper than conventional stove burners which are often formed-simulcast iron by a casting and machining process involving a number of relatively expensive labor operations. 2.;

Figs. 9 and 10 illustrate yet another embodiment of my invention. By reasonloi rapid temperature changes and other causes, the burner surface in the neighborhood of ridges 31 is susceptible to corrosive attacks. I have discovered that if the concave :lower or inner surface be filled with metal, preferably .of "the same or a similar alloy to'that of the bnrner, :these :corrosive attacks are greatlyreduced. .In.Figs. 9 and .10 an elongated slug of :metal -45 is welded or otherwise attached within the inner concavity 4B of the ridge 3?, and the ridge and slug are perforated at 37 to permit passage of the gas.

What I claim is:

,1. Aburner for fuel gas comprisinga cover and a base both formedirom sheet metal united to enclose therebetween a mixing chamber, said chamber having a larger portion, and a smaller end portion, anda neck'portionconnecting said larger and smaller portions, both said portions being generally :circular 'in common horizontal planes, said cover and base having peripheral edges crimped one upon the other to hold said base and cover together, a wall :portion of said end chamber being provided with an ,opening to permit intake of fuel gas therethrough to said chamber, another walliportionofsaid end chamber being provided with an air intake port, said port being variable in size'b tmeans of a mixing plate adiustably mounted thereupon, a top wall portion of said larger chamber portion being perforated .to permit discharge of acombustib'le'fuel mixture therethrough, azplurality of fin-like sheet metal baffle members disposed =.within said larger chamber portion and aifixed to an'inner wall thereof to produce diversionary :fluid currentsin the fuel-air mixture for more thorough mixture thereof.

2. A burner for fuel gas comprising a cover and. a base both formed from sheet metal. and united to enclose'a mixing chamber-said chamber having a larger portion, and-asmaller end portion and a neck portion connectingsaidlarger and smaller portions, both said portions being generally circular in common horizontal planes, said cover and base having peripheral edges crimped one upon the other to hold said base and cover together, :the central portion of the upper wall or" said larger chamber portionhaving a circular "aperture therein, the central portion of the lower wall of said larger chamber portion having an axially aligned aperture, the edge of said last named apeirture being drawn zupwardly and mutually crimped-with the edge iofsaidafirst .named, aperture to'provide -a centrally disposed tubular support, :a side wall portion rof'said end chamber being provided with a fuel "intake 3 port,

another wall portion of-said end chamber being provided withen air intake gport ansadjustable all) air mixingplate mounted adjacent said air intake port for adjusting the area of said air intake port, the top wall portion of said chamber surrounding said tubular support being perforated to permit discharge of a combustible mixture therethrough, a plurality of generally arcuate fin-like sheet unetal 'bafile members affixed to the inner bottom wall of said largerchamber portion, and

spaced around said columnar support, and exitending upwardly into the path of travel of the fuel-air mixture to produce diversionary fluid currents in the fuel-air mixture for more thorough mixture ithereof.

3'. ri burner'ior fuel gas comprising a one piece cover and acne piece base both formed from sheet metal united to enclose therebetween a mixing chamber, said mixing chamber comprising a larger main portion, and a smaller end portion, both portions being generally circular in horizontal planes, and a neck portion connecting said main and end portions, said cover having a peripheral depending side wall and being generally of downwardly .open cup form, said base being generally planar and spaced from the ,cup bottom of the cover, theperipheral edges of. the base and side wall being .crimped together to hold said base and cover together, the dependin :cup side wall of saidlend portion being provided-with an opening to permitintake of fuel gas there- ..through tosaid'mixing chamber,'the cup bottom at the end portion being provided'with an intake port, said port being variable in size by means of a mixing plate adjustably mounted thereupon, the cup bottom at the main portion being perforated to @permit discharge of a combustible fuelmixture'therethrough.

l. burner for iuelgaszcomprising a one piece cover and a one piece base :both formed from sheet metal united to enclose :therebetween mixing chamber, said mixing chamber comprising .a larger main portion, and a, smaller end portion, :both portions being generallycircular in horizontal planes, .and a neck portion connecting .said'main-and end portions, saidcover having a peripheral-dependingsidewall and being generally of downwardly open cup form, said base being generallyplanar and spaced from the cup bottom of'the cover, the peripheral edges'of the base andzsidexvall being crimped together to hold said baseand cover together, the dependin cup side wall of said endportion being provided with an opening to permit intake of fuel gas there through tosaid mixing chamber, the base at a portion-thereof underthesaid:smallerend portion of thecover, being provided with an air intake port, said portbeing variable insize by means of a mixing :plate adjustably mounted thereon, the cup bottom at themainportion being perforated to permit discharge of a combustible fuel mixture therethrough.

ALBERT I-I. BERGER. v

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 849,359 Baxter Apr. 9, 1907 1,260,442 Pickup Mar. 26, 1918 1,463,592 Robinson July 31, 1923 1,486,668 Kielberg Mar. 11, 1924 2,096,903 Lange Oct. 26, 1937 2,396,800 Mills l l Mar. 19, 1946

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