US2755791A - Gas stove - Google Patents

Description

July 24, 1956 J. E. CHAMBERS EI'AL GAS STOVE 2 Sheets-Sheet 1 Filed Feb. 13. 1950 2/ mww ish/J a y 1956 J. E. CHAMBERS EI'AL 2,755,791

GAS STOVE Filed Feb. 13, 1950 2 Sheets-Sheet 2 I in United States Patent 6 GAS STOVE John E. Chambers and Thomas Esta Phares, Shelbyville, Ind., assignors to Chambers Corporation, a corporation of Indiana Application February 13, 1950, Serial No. 143,918

1 Claim. (Cl. 126-21) This invention relates to a gas range or stove having a splash plate rising vertically from the rear edge of the cooking surface. In particular the invention has reference to a gas stove having a flue built into the backing of the splash plate for venting the products of combustion into the atmosphere in front of the splash plate.

In a gas stove constructed in accordance with the present invention the products of combustion from the gas burners heating the broiler and oven are vented through a flue into the atmosphere in front of the splash plate above the cooking top, so that they can not stain or discolor the kitchen wall adjacent the stove. The flue is insulated from the wall by means of a dead air space and a layer of rock wool or glass wool or similar insulation material. Another dead air space provides insulation between the flue and the back of the splash plate. The flue is designed to provide the maximum possible space for the flow of the hot flue gases which travel vertically to a point above the top of the back splash plate and are then turned substantially at right angles to flow outwardly into the atmosphere in a substantially horizontal plane. Because of the long distance the flue gases travel vertically before they flow outwardly over the top of the back splash plate, and the large area provided, they are cooled substantially before they leave the flue and therefore they do not heat the atmosphere in front of the back splash plate to any appreciable extent.

The structure my means of which the above and other advantages are attained will be described in the following specification, taken in conjunction with the accompanying drawings showing a preferred illustrative embodiment of the invention, in which:

Figure l is a fragmentary perspective view of a stove embodying the invention;

Fig. 2 is a front elevation of the back splash plate with parts broken away to show the flue structure;

Fig. 3 is a cross sectional view, taken along the line 3-3 of Fig. 2;

Fig. 4 is a rear perspective view of the back of the upper portion of the stove, with parts broken away to show details of the interior structure;

Fig. 5 is a cross sectional view, taken along the line 55 of Fig. 4; and

Fig. 6 is a detail perspective view of the unitary back structure which rises in back of the splash plate and in which structure the flue is incorporated.

In the drawings, the reference numeral 2 indicates a gas range or stove having a cooking top 3 and a back splash plate 4. The cooking top is bent upwardly adjacent its rear edge, as indicated at 5 (Fig. 5), and then rearwardly to form a horizontal flange 6. The lower edge of splash plate 4 is bent rearwardly to form a horizontal flange 7. Flanges 6 and 7 are secured together by means of a plurality of bolts or screws 8. A metal molding 8 covers the joint between flanges 6 and 7. The upper edge of the splash plate is bent forwardly and upwardly, as indicated at 10, and is then flared upwardly and rearwardly, as indicated at 11. Portion 9 is prefer- 2,755,791 Patented July 24, 1956 ably provided with an elongated opening 12 into which is fitted a housing 13 carrying a light bulb 14.

The stove back has a vertically extending flue opening 15 formed between a back panel 16 and an intermediate panel 17. The lower edge of panel 17 is bent forwardly to form a flange 18. A pair of spacing elements, such as loops 19, secured to panel 17 space the vertical portion of splash plate 4 from panel 17, thus providing a dead air space therebetween. The lower edge of panel 16 is secured to a back plate 20 of the stove proper by means of a plurality of bolts 21. Back plate 20 is bent forwardly to form a transverse wall 22 and then upwardly to form a flange 23 which extends up to cooking top 3. Flange 18 is supported on wall 22 at the corner formed between flange 23 and the wall. Wall 22 is provided with a plurality of elongated apertures 24 which permit the passage of the flue gases from the flue boxes (not shown) behind the oven and broiler to flue opening 15. Apertures 24 leave only enough metal in transverse wall 22 to provide the strength necessary to support panel 17. The upper edge of panel 17 is bent forwardly to form a flange 25 which terminates at a point adjacent the rear edge of portion 11 of splash plate 4. Flanges 1S and 25 are the bottom and top, respectively, of the dead air space between splash plate 4 and panel 17 and serve as spacing elements to maintain a desired spaced relationship between panel 17 and splash plate 4.

The upper edge of back panel 16 is bent forwardly to form a flange 26 which serves to direct the flue gases to the vent or outlet (the space between the adjacent edges of flanges 25 and 26) beneath top tray 27. This tray is supported by the back splasher above flange 26, as shown in Fig. 2. The outlet for the flue gases is relatively wide although not as wide as the inlet to the flue. As is apparent from Figs. 2, 3 and 6, the flue has a slight lateral convergence, from the bottom to the top. The relatively wide flue discharge opening and the absence of any constriction therein causes the flue gases to be discharged in a gentle stream instead of a blast. The flue gases travel in a horizontal plane forwardly from the flue discharge opening and away from the kitchen wall so that the wall can not be stained or discolored. The ends of flue opening 15 are closed by end walls 28 having flanges 29 welded or otherwise secured to the front surface of back panel 16. Panel 16 is provided with flanges 30 which give the panel rigidity.

A back plate 31, spaced from back panel 16 by flanges 32, is secured to panel 16 by means of a plurality of bolts 33. The space between panel 16 and plate 31 is filled with glass wool 34 or similar insulation.- An angular plate 35 extending around the top and sides of plate 31 has an inturned edge 36 which spaces the back of the stove from the kitchen wall and provides a dead air insulation space between the kitchen wall and back plate 31. The flue opening 15 is so long (in the vertical dimension) that the flue gases are substantially cooled by the time they reach the top of splash plate 4 and do not raise the temperature of the atmosphere in front of the splash plate appreciably when they are discharged from the passageway between the underside of top tray 27 and the top edge of the splash plate.

The flue structure hereinabove described and shown in its entirety in Fig. 6 is a unitary structure. Its assembly with the gas range is simple, requiring only a few bolts and nuts.

Although we have described a preferred embodiment of the invention in considerable detail the description is intended to be illustrative, rather than restrictive, as many details may be modified or changed without departing from the spirit or scope of the invention. Accordingly, we do not desire to be restricted to the exact structure disclosed.

We claim:

In combination with a gas stove having a splash plate extending upwardly from the rear edge of the cooking top and a flange extending across the back of the stove adjacent the cooking top, a unitary flue structure of substantially the same width as said stove, said unitary flue structure being rigidly secured to said stove and comprising a pair of vertically disposed spaced panels secured together in spaced relationship, a layer of insulation between said spaced panels, a third vertically disposed panel spaced trorn said pair of panels, the space between said third panel and the one panel of said pair closest thereto constituting the flue opening, walls closing the sides of said flue opening, a plurality of spacing elements projecting forwardly from said third panel to space it from the splash plate, one of said spacing elements being adjacent the top of said third panel and another of said spacing elements being adjacent the bottom thereof, the said bottom spacing element being supported by said flange, and a horizontally disposed top member overlying the flue opening and forming with said top spacing element and outlet from said opening.

References Cited in the file of this patent UNITED STATES PATENTS 2,259,639 Hennessy Oct. 21, 1941 2,309,784 Peron Feb. 2, 1943 2,376,571 Brumbaugh May 22, 1945 2,438,035 Buhrnan et al Mar. 16, 1948 2,485,359 Cook Oct. 18, 1949 2,482,952 Warren Sept. 27, 1949 2,512,521 Davidson June 20, 1950 2,526,890 Mendel Oct. 24, 1950

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