US1903032A - Burner - Google Patents

Description

H, D, DUFAULT March 28, 1933.

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Patented Mar. 28, 19133 UNITED STATES PATENT oFElcE HOMER D. DUFAULT, OF EASTHAMPTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-SIXTH TO ALDERIC F'UGERE, ONE-SIXTH T0 E'UCLIDE FUGERE, ONE-SIXTH T ADAM BOUCHER, ONE-SIXTH T0 HENRY BERNIER, AND ONE-SIXTH T0 HIRAM BERNIER, ALL OF EASTHAMPTON, MASSACHUSECE'TS BURNER Application filed March 28, 1932. Serial No. 601,679.

The invention relates primarily to either liquid or gas fuel burners of a type designed -for use in fire-boxes of heating or cooking stoves, such as those originally intended for burning solid fuel. Water-backs or coils in the fire-boxes (usually only in those of kitchen ranges) receive adequate heat from the burners when the latter are operating to produce maximum temperature, but when the burners are turned down for a low fire,

the water-backs or coils do not receive sufli-` tric upwardly discharging burner rings, and

a connecting neck placing said rings in communication with each other, and a further object is to provide this'neck with gas discharge perforations or the like to aid in initially lighting the burner.

A 'further object is to provide a novel construction for supporting the burner and holding the latter and its support against relative sliding.

With the foregoing and minor objects in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawings.

Fig. 1 is a perspective view partly broken away and in section showing two of the improved burners installed in the fire-box ofa kitchen range.

Fig. 2 is a vertical, sectional view on line 2-2 of Fig. 1.

Fig. 3 is a top plan view with the perforated air and gas mixing walls removed.

Fig. 4 is a detail vertical sectional view on line 4-4 of Fig. 3.

Fig. 5 is a bottom plan view of one of the burners, partly broken away and in section.

Fig. 6 is a top plan view of the burner support.

A preferred construction has been shown and will be specifically described, with the understanding however that within the scope of the invention as claimed, variations may bemade. Furthermore, while a gas burner has been disclosed, it is to be understood that my improvements could well be embodied ,in a burner for consuming liquid fuel.

Duplicate burners B have been shown mounted upon a support S, but a description of one of said burners will suffice.

The burner B embodies inner and outer concentric burner rings or conduits 10 and 11 disposed in a horizontal 'plane and spaced apart by necks 12, 13 and 14, so that secondary air inlets 15 are provided between said rings, the space 16 within the inner ring 10. forming another air inlet. The necks 13 and 14: may be of'solid cross section but neck 12 is hollow and establishes communication between the rings 10 and 11. These rings are provided respectively with perforations 17 and 18 disposed inv their upper sides and adapted for discharging gas upwardly between perforated concentric walls 19, 20, 21 and 22 which are held in spaced relation with each other vby fitting against annular shoulders or the like 23 on` the burner rings. Direct upward rush of air from the opening 16 through the wall 19, is prevented by a cap 24 resting upon the latter, and to prevent such direct upward rush of air from the inlets' 15 between the walls 2O and 21, a ring 25 rests upon the upper ends of these walls.

The upper side of the hollow neck 12 is provided with a plurality of gas discharge openings 26. When lighting the burner, if the gas from these openings first becomes ignited, they lead the flame to the gas discharging through both sets of perforations `17 and 18. Similarly, if the gas from either of these sets of perforations 17 and 18 first becomes ignited, the gas discharging through the perforations 26,` leads the flame to that discharging from the other of said sets. When a pilot such as P of Fig. 1 is employed, the gas from the perforations 18 usually ignitcs first, that from the perforations 26 next, and finally that from the perforations 17. lVhether this sequence takes place or not, the pcrforations 26 materially aid in insuring almost instantaneous igniting of the gas discharging from all of the perforations.

At the outer side of the ,ring 11, is a short horizontal gas conduit 27 which communicates with said ring 11 and is substantially tangential thereto. This conduit 27 is preferably about straight, and its outer side is provided with a plurality of perforations 28, preferably formed through nipples 29, said perforations being horizontal or slightly inclined and being adapted to outwardly direct jets of flame against a water-back W (Fig. 1) o'r against a coil. These jets of flame thus insure effective heating of the waterback or the like even when the gas supply to the burner is turned down for a low ire. Hence, a difficulty heretofore encountered w'th burners of the general types to which the invention relates, is effectively overcome.

An upstanding air and gas mixer 30 is provided for the burner B, the upper end of said mixer being threaded into an opening in a boss 31 which is preferably formedJ on the lower side of the conduit 27, oppos'te the neck 12, so that the mixture of air and gas entering through said mixer, may distribute about uniformly in the rings 10 and 11, said conduit and said neck. Gas is discharged into the mixer 30 through a conventional Spud or the like 32 connected with a valved gas line 33. The mixer is upwardly movable from the Spud or the like and merely rests upon the support S. When two burners are employed, this support is of the specific shape shown in Fig. 6. In this and a number of the other views, 34 denotes a horizontal plate supported by a vertically adjustable standard 35, said plate having crescent-like ends 36 upon which the outer rings 11 of the two burners, rest. These rings are provided with downwardly projecting studs 37 removably received in openings 38 in the plate portions 36, thereby holding the support and the burners against relative sliding but permitting said burners to be readily lifted from the support if desired, for instance, when cleaning is necessary.

The standard 35, in the construction shown, is provided with a base 39 having ad? justing screws 40, allowing leveling of the entire burner structure to obtain the best results.

It will be seen from the foregoing that Anovel and advantageous provision has been made for carrying out the objects of the invention, and while the details disclosed are preferably followed, attention is again in-y vited to the fact that vari ations may be made within the scope of the invention as claimed.

I claim 1. In a burner, a horizontal upwardly discharging burner ring, a short ysubstantially straight horizontal fuel conduit joined to and communicating with said ring, said conduit being substantially tangential to the outer periphery of sai-d ringand having fuel discharge means adapted to outwardly discharge fuel for heating a water-back or the like, and v conduits, .said horizontally discharging con-4 duit being adapted for heating a water-back or the like. y

3. In a burner, inner and outer concentric horizontal burner rings having fuel discharge perforations in their upper sides, a neck con- I necting and establ'shing communication between said rings, said neck having initial lighting fuel discharge perforations in its upper side, a short substantially straight horizontal fuel conduit joined to and communicating with said outer ring, said conduit being substantially tangential to the outer periphery of said outer ring and having substantially horizontal outwardly directed fuel discharge perforations, and a fuel inlet for said rings and conduit, said conduit being adapted for heating a water-back or the like.

In testimony whereof I ax my signature.

. HOMER D. DUFAULT.

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