US2794497A

US2794497A - Gas burner

Info

Publication number: US2794497A
Application number: US485378A
Authority: US
Inventors: Homer D Dufault; Ernest A Walen
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-02-01
Filing date: 1955-02-01
Publication date: 1957-06-04
Anticipated expiration: 1974-06-04

Description

June 4, 1957 H, D. DUFAULT ETAL v2,794,497

GAS BURNER Filed Feb. 1, 1955 INVENTOR. /fwr f/ .3.11 l 3 l u \\J I n I D b i l b III.:l IMQ. Illu IIrI Ill. Il l...-

United States Patent C GAS BURNER Homer D. DuFault, Easthampton, and Ernest A. Walen, Longmeadow, Mass.

Application February 1, 1955, Serial No. 485,378

2 Claims. (Cl. 15S- 99) This invention relates toV new and useful improvements in gas burning apparatus and the principal objects of the invention are directed to gas burning apparatus which is arranged and adapted particularly for broiling purposes.

For efficient broiling purposes, it is necessary that heat be directed downwardly onto the material being broiled and to that end' the apparatus of this invention is constructed and arranged so as to provide a large area of downwardly directed heat where'the heat vis substantially uniform throughoutA the heating area;

For the most satisfactory broiling operation heat is provided by a luminousv ame and, according to this invention, a plurality of long luminous flame jets are provided which are surmounted by heat reflecting means. The ame jets are supplied with properly distributed secondary air for the utmost eiciency.

According to the invention in a general way, a burner bar is provided having separate gas and air channels with gas and air ports leading from said channels. Raw gas is supplied to the gas channel, and air under more or less pressure is supplied to the air channel. For manufacturing reasons the gas and air may be provided in an integral unit or they may be secured together units.

The gas and air ports are relatively arranged so that suicient air is discharged so as to support combustion and to provide the desired elongated side-by-side luminous tongues of ame which are rather thin as distinguished from fat, bushey, tongues.

The burner is so arranged that a multiplicity of the flame tongues extend over a considerable area and by providing reecting means over the ame tongues there is a larger heating area which is particularly desired for broiling purposes.

The apparatus is adapted for use in the broiling compartment of a range or the like or in a compartment constructed for broiling purposes and, as a feature of the invention, means is provided for supplying secondary air according to the quantity and pressure desired and necessary for the luminous flame operation of the apparatus.

All of the above cited objects, we accomplish by means of such structure and relative arrangement of parts thereof, as will fully appear by a perusal of the description below and by various specific features which will be hereinafter set forth.

To these above and other'ends and with the foregoing and various other and ancillary features and advantages and objects of our invention as will become more readily apparent as the description proceeds, our invention consists in certain features of novelty, in a mode of operation, and in the combination, organization, and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in conjunction with the accompanying drawings wherein:

Fig. 1 is a side elevational view of a burner embodying the novel features of the invention;

A .2,794,497 `Patented June 4,. 1957 ice Fig. 2 is a transverse sectional elevational view'through the burner shown in Fig. l and having a reecting plate associated therewith; and

Fig. 3 is a sectional elevational view through a compartment for broiling purposes having the. apparatus of the invention associated therewith.

Referring now to the'drawings more in detail theY in; vention will be fully described.

An elongated burner bar is shown at 2 which has separate upper gas and lower airchannelsV 4 and6 therealong. Thebar is formed to close'the channels at one end thereof and'opposite ends of the channels are adapted at Sand 10 to receive gas and air supply connections.

A continuous flange portion 12 extends-outwardly along opposite side and end of the bar, as shown. The bar 2 in one Way is formed'so that'the` air channel thereof gradually narrows fromf the inlet to its closed end, asV shown, but such features may not be necessary or desired in all cases.

A plurality of gas ports 14 in spaced relation are provided along the sides of the bar 2 beneath the ange 12 which extend from the gas channel 4. Other. ports 16 for air discharge in spaced relation are provided along the bar which extend from'the'air channel 6.

The-ports`14 and` 16 are provided along opposite sides j and the closed end ofthe burner and, as shown, the gas and air ports are inA verticall alignment. The' size and spacing of the ports will be determined by the specific conditions that are to be met and the relative arrangement of the gas and air ports may be varied.

A compartment 20 is shown in Fig. 3 which is formed by walls 22, 24, 26, and 28 which may represent the walls of a range or the like. A shelf is represented by 32 for a broiling pan and may be supported by run ways 34. A door is represented by 36.

The burner bar 2 is supported in the upper portion of the compartment 2t! and its open end may extend through the wall 22.

A gas supply line is represented by 40 which is connected by a conduit 42 to the gas channel of the burner bar. An air duct 44 connects the air channel of the burner bar to the supply means such as a small blower, fan, air turbine, or the like, indicated by 46 which is operated by a motor 48.

A reilecting member 50 is disposed over the burner bar 2. This will take the form of a corrugated plate formed from stainless steel or the like. Said plate 50 may be secured in spaced relation to the upper side of the burner bar by spacers 52 and screws 54 or the like.

According to the invention it is desired that gas and air be delivered to the burner simultaneously. To that end a valve 54 in the gas line 42 of the lever type having an operating lever 56 movably outwardly to open position is provided.

The lever 56 is connected by member 58 to arm 60 of a switch as shown so that as the valve is opened the switch is closed. Connections 62 and 64 connect the switch to one side of a power supply line 66 which of course may be a suitable source of D. C. or A. C. energy and to the motor 48. The motor is connected by 68 to supply line 66.

Thus as the burner is supplied with gas and air elongated luminous tongues are provided at opposite sides of the burner 2 and the reliector 50 directs heat downwardly as desired.

The control apparatus for the gas and air may take various forms it being desired to provide suicient secondary air at such a pressure as will sustain, as near as possible, complete combustion and provide a multiplicity of elongated luminous tongues at opposite sides and end of the burner.

The invention may be embodied in other spe-cie forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore to be considered in all respects merely as being Villustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description andY all modifications and variations as fall within the meaning and purview and range Vof equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

1. Gas burner apparatus for horizontal disposition in the compartment of a range for broiling purposes comprising, a unitary body having elongated horizontal and vertically spaced lower and intermediate and upper walls connected at opposite sides by longitudinal vertically dis- 2. Gas burner apparatus for horizontal disposition in the compartment of a range for broiling purposes comprising, a unitary body having elongated horizontal and vertically spaced lower and intermediate and upper walls connected at opposite sides by longitudinal vertically disposed side walls and at outer ends by a vertical end wall providing separate longitudinally extending lower air and upper gas channels having air and gas inlets at rear ends thereof, said lower and intermediate wall relatively converging from rear to outer ends thereof, longitudinally extending side anges projecting laterally outwardly from upper portions of said side walls, said side walls 1 provided with a horizontal row of relatively spaced gas posed side walls and at outer ends by a Vertical end wall 'j extending side tianges projecting laterally outwardly from upper portions of said side walls, said side walls provided with a horizontal row of relativelyy spaced gas ports from said gas channel disposed below and adjacent said side anges and with a horizontal row of longitudinally spaced air ports from said air channel disposed vvertically below said gas ports, said gas and air ports arranged to direct jets of gas and air horizontally outwardly.

ports from said gas channel disposed below and adjacent said side flanges and with a horizontal row of longitudinally spaced air ports from said air channel disposed vertically below said gas ports, said gas and air ports arranged toA direct jets of gas and air horizontally outwardly, a reflector plate disposed above said upper wall having longitudinal side portions extending horizontally outwardly along said body.

References Cited in the iile of this patent UNITED STATES PATENTS Dow et al. July 24, 1956