US2993532A

US2993532A - Gas range structure

Info

Publication number: US2993532A
Application number: US791933A
Authority: US
Inventors: Thomas T Arden; Weber Victor
Original assignee: Robertshaw Fulton Controls Co
Current assignee: Robertshaw Controls Co
Priority date: 1959-02-09
Filing date: 1959-02-09
Publication date: 1961-07-25
Anticipated expiration: 1978-07-25

Description

T` T. ARDEN ET AL July 25, 1961 GAS RANGE STRUCTURE 2 Sheets-Sheet 1 Filed Feb.

T. T. ARDEN July 25, 1961 ET AL GAS RANGE STRUCTURE 2 Sheets-Sheet 2 Filed Feb. 9. 1959 United States Patent 2,993,532 GAS RANGE STRUCTURE Thomas T. Arden, Richmond, Va., and Victor Weber,

Greensburg, Pa., *assgnors to RobertshaW-Fulton Controls Company, Richmond, Va., a corporation of Delaware Filed Feb. 9, 1959, Ser. No. 791,933 8 Claims. (Cl. 158-105) This invention relates to gas range structures and in particular to the burner box bottom and the gas manifold of a gas range.

An object of this invention is to combine a burner box bottom and a gas manifold into a unitary gas range structure.

Another object of this invention is to support gas range control devices directly on the burner box bottom of a gas range.

This invention has another object in that a spillage receptacle is formed by a conduit in the burner box bottom of a gas range.

This invention has Aanother object in the construction of a combined gas manifold and burner box bottom of a gas range from lightweight sheet material at a relatively low cost.

vIn carrying out this invention, a pair of sheet metal plates are joined in face-to-face contact to form a burner box bottom. A gas conduit is formed in the burner box bottom by means of channels in the sheet metal plates. Main and pilot passages are also formed in the plates and communicate with the gas conduit to receive the ilow of gas therefrom and such passages are provided with suitable openings to form outlets.

Other advantages and objects will become apparent from the following description taken in connection with the accompanying drawings wherein:

FIG. l is a plan view of a gas range structure embodying this invention;

FIG. 2 is a sectional view taken on FIG. l;

FIG. 3 is an enlarged sectional view III-lII of FIG. 1;

FIG. 4 is an enlarged sectional view lV--IV of FIG. l;

FIG. 5 is an enlarged sectional view V--V of FIG. 1; and

FIG. 6 is an enlarged sectional view Vl-VI of FIG. 1.

As is illustrated in FIGS. l and 2 of the drawing, a gas range structure of a gas manifold and burner box bottom is indicated generally at 1() and comprises upper and

lower plates

12 and 14 formed of lightweight sheet metal material such as aluminum and integrally joined or bonded together in a face-to-face contact by any suitable process. The plates have a generally rectangular configuration Yand the upper plate 12 is provided with bent-over flanges on each end to form legs or supports 16 and 18.

The plate 12 is provided with an upwardly disposed portion forming a channel 20 and plate 14 is provided with a downwardly disposed portion forming a channel 22. The

channels

20 and 22 are complementary shaped to form a gas conduit 24. The channels 26 and 22 are spaced slightly inwardly from the peripheral edge of the plates in the form of a rectangular loop whereby the gas conduit 24 is continuous around the burner box bottom 10.

An inlet aperture 26 extends through the upper channel 20 and sealingly receives one end of an elbow tube 28. One end of the tube 28 is secured to the channel 20, as by welding or other bonding process, and its opposite end is line II-II of taken on line taken on line taken on line taken on line Patented July 25., 1961 ICC secured to a standard gas inlet fitting 30 and bonded to a supporting bracket 32. The bracket 32 has a generally triangular coniiguration, the base of which is suitably cut out to form legs which straddle the channel 20 and are secured to the upper plate 12 as by welding 34.

The upper plate 12 is formed with a plurality of upwardly disposed portions 36 which define a plurality of spaced grooves 38. As is illustrated in FIG. 2, each groove 38 decreases in cross-section from its inner end which communicates with the gas conduit 24, to its outer end which communicates with a main passageway 40. In order to present a smooth top supporting surface between the channel 20 and the front edge of the plate 12, the main passageway 40 is only extended along the undersurface of the upper plate 12 and is formed by a downwardly disposed portion 42 in the lower plate 14.

A plurality of spaced outlet apertures 44 extend through the upper plate 12 and communicate with the main passageway 40. As is illustrated in FIG. 4, each outlet 44 is provided with a registering bored adaptor 46 on which a suitable gas control device (not shown) is mounted. Each control device adaptor 46 includes an 0- ring seal 48 and is secured -to the at supporting surface -by means of rivets 50 extending through the two

plates

12 and 14.

A pilot passageway 52 is extended along the undersur-face of the upper plate 12 and is formed by a downwardly disposed portion 54 in the lower plate 1'4. The pilot passageway 52 communicates directly with the gas conduit 24 and extends therefrom toward the inner portion of the rectangular loop. As is illustrated in FIGS. l and 6, the pilot passageway 52 includes a plurality of branch lines leading to a plurality of outlet apertures 56 which extend through the upper plate 12. Each pilot outlet aperture 56 is provided with a registering bored adaptor 58 on which a suitable pilot burner (not shown) is mounted. Each pilot burner adaptor 58 includes an O- ring seal 60 and is secured to the burner box bottom '10 by means of rivets 62 extending through the two

plates

12 and 14.

The pilot passageway 52 is provided with a lter device, indicated generally at 64, which is secured to the burner box bottom 10 as by rivets extending through the two

plates

12 and 14. The lter 64 comprises a casing 66 having a cartridge cavity 68 and inlet and outlet passages 76 and 72 communicating therewith. A filter cartridge 74 is disposed in the cavity 68 and sealed therein by a detachable cover 76 and gasket 78. A pair of O-ring seals 80 and 82 are mounted in the inlet and outlet passages and 72, respectively, to prevent leakage of the pilot gas flow into and out of the iilter 64. The inlet and outlet passages 70 and 72 communicate with the pilot passageway 52 by means of apertures 84 and 86, respectively, extending through the upper plate 12. As is illustrated in FIG. 5, there is no channel portion in the lower plate 14 between the two apertures 84 and 86 in the upper plate 12 so that all of the pilot gas flow is diverted through the lter 64.

When the burner box bottom is placed in a gas range (not shown), there is no need for special piping and connection for the gas control devices. The gas control devices for the surface burners and oven burner (not shown) are directly mounted on the adaptors 46 which may vary in number and position to lit particular installations.

The particular arrangement of the gas conduit 24 permits ow of gas in both directions from the inlet tube 28 so that sufiicient capacity is maintained for each outlet.

The exterior of the channel 20 presents an elevated surface relative to the upper plate 12 and, because of the rectangular loop construction of the channel 20,

'forms a tub or receptacle which will catch any spillage and prevent soaking the insulation of the gas range. Such a unitary structure forms a spillage receptacle which eliminates the need for a separate drip pan and facilitates the Ycleaning of the structure without interference from separately mounted piping.

It is to be noted that the fabrication ofthe above described structure from sheet metal material results in a considerable reduction in weight and cost over conventional type gas range structures and the heat deflection characteristic of aluminum results in a coolerrburner box.

Inasmuch as the above description Iand the drawings may be subject to various changes in the details of construction and arrangement of parts, it is intended that the foregoing be interpreted as illustrative and not-in a limiting sense.

We claim:

vl. In a gas range structure, the combination comprising a pair of plates in face-to-face contact forming a burner box bottom, a continuous channel in each of said plates disposed adjacent the periphery thereof and in open-faced relation to define a gas conduit, inlet means for said conduit to permit the entry of gas thereinto, channel means in one of said plates being closed by the .other of said plates to denne a main passageway for a main burner gas supply, said other plate presenting a plate-like supporting surface contiguous to said main passageway, connecting means Ibetween said gas conduit and said main passageway to permit the flow of gas thereinto, a plurality of outlet means extending through said supporting surface for communication with said main passageway for the ow of gas therefrom, second channel means in the said one of said plates being closed by the said other of said plates to deiine a pilot passageway for a pilot burner gas supply and including connecting means between said gas conduit Vand said pilot passageway to permit the ow of gas thereinto, and outlet means for said pilot passageway for the flow of gas therefrom.

2. The combination of a burner box bottom and gas manifold comprising first and second plates of sheet material joined in superimposed relation to form a unitary structure, complementary shaped channels in said plates defining an elongated gas conduit, one of said plates being provided with an opening communicating with the channel in said one of said plates to define an inlet for said gas conduit, a plurality of spaced grooves in said iirst plate extending from the channel therein to define a plurality of spaced passages communicating with said gas conduit, means deiining a pasageway in said second plate communicating with said spaced kpassages and adapted for a main burner fuel supply, said first plate presenting a plate-like supporting surface contiguous to said passageway and being provided with a plurality of aperture means communicating with said passageway to dene outlet means therefor, and a groove in said second plate extending from the channel therein to dene a pilot passageway communicating with said gas conduit and adapted for a pilot burner fuel supply.

3. The combination as recited in claim 2 wherein control device adaptor means are mounted on said rst plate contiguous to said outlet means.

4. The combination as recited in claim 2 whereinV lter means is mounted on said first plate and forms a filter for said pilot passageway.

.i 2,993,532 i n 5. The combination 'of a burner box bottom and gas manifold comprising upper and lower plates of sheet material joined in superimposed relation to form a burner box bottom, complementary shaped channels in said plates disposed in open faced relation to define an elongated gas conduit and disposed adjacent to but spaced inwardly from the periphery of said box bottom, the channel in said upper plate having an exterior surface elevated above said box bottom extending in an endless loop to form a spillage receptacle, means- Vin one of'said plates defining an inlet opening for communication with said gas conduit, a second channel in said lower plate cooperating with said upper plate to deiine a main passageway adapted for a main burner fuel supply, means establishing communication between said gas conduit and said main passageway, means communicating with said main passageway and defining a plurality of outlet means therefor, and means defining a pilot passageway extending from said gas conduit and adapted 'for a pilot burner fuel supply.

6. The combination of a burner box bottom and a gas manifold comprising upper and lower metal plates joined in face-to-face contact to form a burner box bottom, complementary shaped channels in saidV plates with the open portions of each channel disposed in open faced relation to define a gas conduit, said channels being spaced inwardly from and extending along the entire periphery of said plates and extending in an endless loop whereby a gas may ow through said gas conduit in two directions, means in `one of said plates defining an inlet opening for communication with said gas conduit, a second channel in said lower plate cooperating with said upper plate to form a main passageway adapted for a main burner fuel supply and being disposed between said loop and the periphenl of said plates whereby said upper plate presents a iiat supporting surface, a plurality of spaced grooves in said upper plate extending between the channel in said upper plate and the main passageway in said lower plate to establish communication therebetween, a plurality of spaced apertures extending through said supporting surface and communicating with said main passageway to form a plurality of spaced outlets therefor, a groove in said lower plate extending interiorly of said loop from the first channel in said lower plate and forming a pilot passageway communicating with said gas conduit and adapted for a pilot burner fuel supply, and aperture means extending through said upper plate and communicating with said pilot passageway to form outlet means therefor.

7. The combination as recited in claim 6 wherein the channel in said upper plate has an exterior surface which is elongated from said box bottom and which forms a drip receptacle interiorly of said loop.

8. The combination as recited in claim 6 wherein a plurality of control device adaptors, one for each of said spaced outlets, are mounted on said supporting surface contiguous to each of said spaced outlets.

References Cited in the le of this patent UNITED STATES PATENTS 2,232,482 Schulz Feb. 18, 1941 2,497,787 Minster Feb. 14, 1950 2,595,005 Shelton et al. Apr. 29, 1952