US2023624A - Burner - Google Patents

Description

Dec. 10, 1935. B. w. TULLIS 2,023,624

BURNER Filed Nov. 3, 1955 INVENTOR. [am ov w. WILL/5 A TTOENE) Patented Dec. 10, 1935 UNITED STATES PATENT or rice Application November 3, 1933, Serial No. 696,503

2 Claims. (01. 158-116) This invention relates to burner construction and particularly to burners for combusting hydrocarbon fuel such as gasoline and the like.

The primary object of the invention is to pro- 6 vide a burner which will have the maximum efliciency under varying conditions.

One of the problems encountered in gasoline stove construction is to provide a burner which will burn efliciently when the flame is relatively 10 low and another problem is to provide a burner which can be set in the stove at a point near the object to be heated. For example, the ordinary gasoline stove has the burner or burners well below the grate of the stove because the flame space 15 between the burner and the grate must be great enough to accommodate the upstanding flame. My invention contemplates the provision of means whereby the flame will be at the perimeter of the burner so the burner proper can be close 20 to the grate.

In considering this invention it should be borne in mind that gasoline is relatively heavy in hydrocarbon content and that it is capable of being burned in a low pressure burner, so I have de- 25 signed the burner so that the pressure at the outlets will be less than that at the inlets, therefore the flame will be close to the perimeter of the burner, and the fuel passages are shown as having progressively increasing cross sectional areas to 30 cause the reduction of the pressures. Also, the burner has certain novel structural features all of which will be specifically described hereinafter, reference being had to the accompanying draws ing in which 35 Figure 1 is a top plan view of a burner con-' structed in accordance with my invention.

Figure 2 is a vertical cross sectional view through the same.

Figure 3 is a fragmentary plan view of one of 40 the fuel-passage-forming laminations.

Figure 4 is a fragmentary edge view of a plurality of the laminations.

Figure 5 is a fragmentary sectional view of the burner casting and the cap piece, and 45 Figure 6 side elevational view of the burner manifold, two burners and the vapor generator. The burner manifold l is supplied through a mixing chamber 2 from a vapor generator 3 having a tip which enters the air opening 4 in the 60 usual manner. The liquid fuel is supplied'to the generator 3 by a pipe 5 connected to a fuel tank containing liquid fuel under air pressure as is -well understood by those skilled in the art to which this invention relates. The burner casta ing has an open neck 1 supported by an open upstanding tubular portion 8 on the manifold.

The neck portion of the casting merges at its upper end into a concave reflector 9 having secondary air openings II) in circular series about the head portion ll of the casting. 5

In the opening of the neck is a cross bar l2 to receive the threaded end of a bolt l3 to clamp the cap it against the series of laminations l5 so as to clamp them against the head portion H as shown in Figures 1 and 2. 10

The laminations are shown as corrugated rings with flat spacer rings l5 between them to form radial passageways l6 so that the combustible mixture can flow from the central fuel chamber il in radial streamlines to the periphery l8 of the burner.

The passageways iii are long enough so that danger of back-flashing will be prevented.

The rings are preferably made of corrosive resisting material. Lava tips I 9 may be inserted in the cap piece M if desired to heat the generator.

From the foregoing, it will be seen that the cap pieces can be set close to the grate of the stove and that the flame will be located at the perimeter of the burner across the face of the reflector so that secondary air will be supplied through the openings ill and that the reflector will intensify the heat furnished.

The laminated arrangement of the passage forming rings I5 allows the burner to be manufactured inexpensively and the transverse ribs forming the corrugations will maintain the. passageways of predetermined sizes in order that the streamlines of fuel will be uniform and thus provide a blue flame band about the burner.

The outlets or radial passageways I6 are shown as having progressively increasing port areas so that the pressure at the perimeter of the burner will be less than that at the inlets of the passageways so the gas orfuel at the perimeter of the burner has very little pressure, and since the lengths of the passageways it are approximately 4 times the short dimension of the passageways, danger of back-firing will be prevented.

What I claim is:

1. A burner comprising a casting having a central opening for the flow of vaporized fuel, a stack of ring-shaped laminations surrounding a space above the central opening and provided with fuel passageways having progressively increasing port areas from the inner edges of the rings to the outer edges so that the vapor pressure at the outlets of the fuel passageways will be less than that at the inlets thereof, the laminations consisting of ring shaped members having one flat face and lnations' to close the grooves to g one corrugated race to provide grooves, and complementary lnminations consisting oi. flat rings resting upon the flat faces of the first named 1amprovide outlet passageways with respect to the axis or the central opening.

2. A burner comprising a casting having a neck with a vertical passageway, a plurality of rings surrounding the upper end of the passage way, said rings eachhaving a flat race and a corrugated face to provide grooves, and flat rings alternating with the first named rings and lying against-the flat iaces thereoi so that the two rings form iuel passageways directed radially with respect to the axis of the vertical pasatewaq, the grooves formed by the corrugations having outward diverging walls so that the eflective port 5 areas or the radial passageways progressively increase toward the peripheries of the rings. whereby ruel pressure at the outlets will be less than at the inlets and means for fastening the stack of 111188 to the malls.

BOYD w. worms.

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