US2485058A - Gas burner - Google Patents

Description

L. C. M KEE GAS BURNER Oct. 18, 1949.

2 Sheets-Sheet 1 Filed Sept. 5, 1946 QTTORNEY L. C. M KEE GAS BURNER Oct. 18, 1949.

2 Sheets-Sheet 2 Filed Sept. 5, 1946 H 7'TORNEY Patented Oct. 18, 1949 UNITED S TATES; OFFICE GASv BURNER Laird C. McKee, Minneapolis, Minn. Application September 5, 1946, Serial No. 694,960

4. Claims. 1

This invention has relation to a gas burner.

An object of the invention is to provide a gas burner which willbe of noveland improved construction and an improvement generally over moreor less similar gas burners now of commerce.

A further object is to provide a gas burner wherein will be incorporated several desirable and improvedfeatures and characteristics of constructionnovel both as individual entities of the gas burner and in combination with each other.

And a further object is to provide a gas burner which will consist of devices or parts of con struction as hereinafter set forth.

With'the above objects in view, as well as others which will appear as the specification proceeds, the invention comprises the construction, arrangement and combination of parts as now to be fully described. and hereinafter to be specifically claimed, it being understood that the disclosure hereinis merely illustrative and intended in no way in a limiting sense, changes in details of construction and arrangement of parts being permissible so long aswithin the spirit of the invention and the scope of the claims which follow.

In the accompanying drawings forming a part of this specification,

Fig. 1 is a perspective view, partially in section and partially broken away, of a gas burner made according to the invention;

Fig. 2 is a view corresponding generally with the disclosure of Fig. 1, but showing a hood or sleeve and. a pilot of the gas burner in diiferent positions;

Fig. 3-is an enlarged vertical sectional view detailing features of said gas burner; and

Fig. 4 is an enlarged perspective view detailing parts of the gas burner.

An elongated hollow tubular member ID of the new and improved gas burner, providing a com.- b-ustible fuel mixture conveying conduit or passage-way II of said gas burner, is adapted to be rigidly supported in any suitable and convenient manner, as denoted at l2, upon an upright or base It for the gas burner. The upright or base [3. is adapted to rest upon a floor or other support for said gas burner.

The elongated hollow tubular member ID, may be of any ordinary or preferred construction suitable to its purpose. As disclosed, said elongated hollow tubular member includes a longer arm l4, horizontally disposed as shown, having a ven-, turi l5, and the elongated hollow tubular member also includes a shorter arm I 6;, vertically disposed as shown, at right angular relation to, the longer arm I4.

The free or upper end of. the shorter arm I B of the elongated hollow tubular'member ll] rigidly supports, asat I], a, hollow fixture l8 of the gas burner consisting of; an annulartubular element i9, vertically, disposed asldisclosed, and an outwardly flared annular flange- 20, also vertically disposed, Which is integral with the annular tubular element 19. The, hollow. fixture I 8 provides a combustible fuel mixtureconveying conduit or passageway 2i which is coaxial with the portion of the conduit or passagewayll in the shorter arm l6, said annulartub-ular element i9 is in adjacent relation to said, shorter, arm. l6, and said outwardly flared annular flangelfi; isat the end of the annulartubular element l9 opposite the elongated hollow tubular member 1-6. and concentric to said annular tubular element I9.

A burner head;- 22; of; the gas burner, which can be of any material: suitable toits. purpose, is constituted as a solid; piece of metal in the illustrated embodiment of the invention; The burner head 22 is adapted to, be Supported upon and partially within the outwardly flared annular flange 2!] of the hollow fixture I8 in such, manner as to provide a cone shape conduit or passageway 23 for combustible fuel mixture between an internal conical surface 24 ofsaid outwardly flared annular flange 20 and an adjacent conical surface 25 of the burner head, and: said burner head is supported, upon and in spaced relation to the outwardly flared an ular flange 26 through the instrumentality of spacers and headed and nutted bolts as; indicated generallyat 26. The, cone shape conduit or passageway 23 is in fact constit t d as. a part f. the on uit r pa a way 2 i. The cone shape surface 25 of the burner head 22 terminates in an apex 21 disposed axially of the conduit orpassageway 2 t, and a defining external cylindrical surface 2;8-'of' said burner head lies in the circumference of the free or outer edge 29 of the outwardly flared annular. flange 20 at the side of said free or outeredge Zfi, opposite the elongated hollow ular memb r "1- A dome shape baflie or flame deflector 30 is fixly s p rted. u o nd n pa ed a n. to a fiat surface 31, opposite the conical surface 25, of the burner head 22; through the instrumentality f a pQ t, 3,2 1 The post 32; is diSpOsed centrally of both the flat surface 3i and; the dome shape bafiie 3D and; extends axially of the hollow fixture e onstr tic and arran me t will be Such ha n. in e nal sp erical s r ac 3.3 of s i dome shape baffle 31; willqverlie said burner head in spaced relation thereto and terminate in sli t y s c d. s rroun n c n n ic e at n to the cylindrical surface 28 of the burner head about in the manner as disclosed in the drawings.

The end of the longer arm 14 of the elongated hollow tubular member I!) spaced from the shorter arm l6 of said elongated hollow tubular member fixedly supports a transversely arranged closure device or plate 34 for said mentioned end of said longer arm l4, and said closure device or plate 34 is provided with adjustable air inlet means, represented generally at 35, for affording access of primary air to be passed through the conduits or passageways II and 2| to and past the cone shape conduit or passageway 23. Also, said transversely arranged closure device or plate 34 rigidly supports an inlet tube 36 for gaseous fuel arranged axially of the longer arm l4 and having its interior end terminating within the venturi 15. A pipe 31 for gaseous fuel, adapted to lead from a source (not shown) of gaseous fuel to the exterior end of the inlet tube 36, supports a gas valve 38 and a pressure regulator 39 which are ordinary equipment of gas burners of the present general character. Said gas valve 38 and pressure regulator 39 are in adjacent relation to each other, as well as in adjacent relation to the closure device or plate 34.

An annular ring 40 of the gas burner, which can be of any construction and material suitable to its purpose, is in spaced, surrounding relation to the closure device or plate 34 and in concentric relation to the longer arm l4, and a transversely arranged closure device or plate 4|, supporting the annular ring 40 upon the elongated hollow tubular member I and/or upon the closure device or plate 34, is provided with adjustable air inlet means, represented generally at 42, for affording access of secondary air to the gas burner in a manner which presently will become apparent.

An open ended hood or sleeve of the gas burner is designated 43. Said hood or sleeve 43 is constituted as a hollow cylindrical member supported by and upon an external cylindrical surface 44 of the annular ring 40 and adapted to be manually slid along said annular ring. Normally, the hood or sleeve 43 will be situated to be in covering, protecting relation to the gas valve 38 and the pressure regulator 39, as in Fig. 1 of the drawings, and the construction and arrangement will be such that said hood or sleeve 43 can be slid inwardly of the gas burner, from its position as in said Fig. 1, toward the burner proper, to be moved to uncovering relation to said gas valve 38 and said pressure regulator 39. An internal cylindrical surface 45 of the hood or sleeve 43, engaged against the external cylindrical surface 44 of said annular ring 46, is smooth and even, and said external cylindrical surface 44 also is smooth and even and is arranged in spaced, coaxial relation to the longer arm M of the elongated hollow tubular member I0.

A cap for covering the exterior end of the hood or sleeve 43, or end of said hood or sleeve 7, spaced from and opposite the burner proper, is

indicated by 46.

Said cap 46 is of cup shape, and is adapted to be removably supported upon said exterior end of said hood or sleeve 43. As shown, the cap 46 includes an annular skirt portion 41 adapted to be removably fitted into the outer end of the hood or sleeve 43.

Air inlets in an outer end portion of said hood or sleeve 43, adjacent the cap 46, are denoted by 48, and an elongated slot 49 in said outer end portion of the hood or sleeve and open to the outer end of said hood or sleeve is for passage of the fuel pipe 37. The construction and arrangement against a length sleeve. The extent of inward sliding movement of said hood or sleeve 43 is adapted to be limited by engagement of the interior end of the hood or sleeve with the burner proper and/ or with the upright or base 13. Also, the construction and arrangement will be such that when the hood or sleeve 43 is at either of its outermost or innermost positions the internal cylindrical surface 45 of said hood or sleeve yet will be engaged with the external cylindrical surface 44 of the annular ring 46, as said internal cylindrical surface 45 is disclosed in Figs. 1 and 2 of the drawings.

The burner proper of the gas burner is adapted to be situated within a furnace, a wall of said furnace being represented by 52. As disclosed, said furnace wall 52 is of refractory material,

A collar 53, of metal as disclosed, is rigidly fixed in an opening 54 through the furnace wall in slightly spaced, surrounding, concentric relation to the annular ring 40, and the hood or sleeve 43 is snugly, slidably situated in said collar 53, between the collar and the annular ring 46. The collar 53 includes a smooth and even internal cylindrical surface 55, and said hood or sleeve 43 includes a smooth and even external cylindrical surface 56 which is slidable along the internal cylindrical surface 55. The upright or base I3 is adapted to support the gas burner parts so that the annular ring 46 will be coaxial with the internal cylindrical surface 55 of the collar 53 and spaced from said internal cylindrical surface 55 a distance equal to, or slightly greater than, the thickness of the wall of the hood or sleeve 43 so that said hood or sleeve will be snugly, as well as slidably, fitted between the internal cylindrical surface 55 and the external cylindrical surface 44 of the annular ring 4|].

A pilot of the gas burner is denoted at 51, a flexible pipe connection to said pilot is indicated at 56, and outlets from the pilot are represented at 59. A bracket for adiustably supporting said pilot 51 is constituted as a length of rigid material or metal, which can be wire, of general U- shape including a base 60, a shorter leg 6i substantially in parallel relation to the shorter arm l6 of the elongated hollow tubular member I6, and a longer leg 62 substantially parallel to the shorter leg 6|. Said shorter leg 61' rigidly supports a T-member 63 to which the flexible pipe connection 58 leads, and said flexible pipe connection 58 is rigidly connected to the pilot 51. Said pilot is alined with said shorter arm 16. The longer leg 62 of the bracket for adjustably supporting said pilot 51 is substantially parallel to the shorter arm l6 of the elongated hollow tubular member III, as well as parallel to the shorter leg 6! of said bracket, and said longer leg 62 is snugly and slidably and rotatably situated in an opening 64 of the gas burner parallel to the pilot 5!. A set screw 65 is for removably fastening the longer leg 62 in fixed relation to the elongated hollow tubular member l6 and the hollow fixture 18 of the gas burner. The outlets 59 from the pilot 5'! are at the end of said pilot opposite the T-member 63, adjacent the outer portion of the cone shape conduit or passageway 23.

In practical use, the usual gas valve, such as 38, and pressure regulator, such as 39, and equivalent or other devices when employed, of a gas burner at times require adjustment or attention. The inclusion of a slidable hood or sleeve such as 43 and a removable cap such as 46 is provision for protection of critical parts of the gas burner, and, when critical parts of said gas burner require repair, the hood or sleeve and the covering cap easily and quickly and readily can be moved, to positions permitting free access to said critical parts.

Primary air for the gas burner is adapted to travel past the closure device or plate 34 by way of the adjustable inlet means 35 into the elongated hollow tubular member Ill. By adjustment of the air inlet means 35, larger or smaller quantities of primary air can be permitted to pass to the burner proper. Gaseous fuel for the gas burner is adapted to be fed under pressure through the inlet tube 36 into said'elongated hollow tubular member I0. I'he gaseous fuel and primary air will become mixed Within the venturi I5, and the resultant combustible fuel mixture will travel through the conduits or passageways I I, 2! and 23 to the annular outlet from the conduit or passageway 23 where said combustible fuel mixture is to be burned.

Secondary air for the gas burner is adapted to travel through the air inlets 48 into the hood or sleeve 43 and thence past the closure device or plate 4| by way of the adjustable inlet means 42 into the furnace, past the wall 52 of said furnace, where said secondary air will be available for use at and exteriorly of the burner proper. It will be evident that said closure device or plate 4| and associated parts are adapted to preclude passage of secondary air past the furnace wall 52 into the furnace other than secondary air permitted to enter said furace by way of the adjustable air inlet means 42. By adjustment of the air inlet means 42, larger or smaller quantities of secondary air can be permitted to pass into the furnace.

It will be apparent that since the longer leg '62 of the U-shape bracket which supports the pilot 5! is mounted to be both slidably and rotatably adjustable, said pilot 5! can be adjusted both longitudinally to cause its outlets 59 to be moved transversely of the annular outlet from the cone shape conduit or passageway 23 and circumferentially to cause its outlets to be moved substantially along an arc of the annular outlet, closer to or farther from said annular outlet. Thus, provision is included for adjustably setting the pilot 5'! and its outlets 59 at proper :and intended relation to the combustible fuel mixture annular outlet from the cone shape conduit or passageway 23, where a usual light of said pilot positively can ignite combustible fuel mixture as this emanates from said cone shape conduit or passageway.

It will be apparent; from Fig. 2 of the drawings that when the hood or sleeve 43 is at its innermost position, the major portion of its length is situated within the furnace and a minor portion of its length is situated within the furnace wall.

What is claimed is:

1. In combination, a furnace including a wall having an opening, a burner within said furnace, a conduit leading to said burner by Way of said opening, a pipe for gaseous fuel leading to said conduit, devices contiguous with said pipe for gaseous fuel situated outside of said furnace, and a sleeve adapted to be slid inwardly and outward- 13' of said opening selectively to be situated in covering, protecting relation to said devices or in uncovering relation to the devices.

2. In combination, a furnace including a wall having an opening, a burner within said furnace, a conduit leading to said burner by way of said opening, a pipe for gaseous fuel leading to said conduit, devices contiguous with said pipe for aseous fuel situated outside of said furnace, a sleeve adapted to be slid inwardly and outwardly of said opening selectively to be situated in covering, protecting relation to said devices or in uncovering relation to the devices, and a cap member for removably covering an end of said sleeve at the side of said devices opposite said furnace.

3. In combination, a furnace including a wall having an opening, a burner within said furnace, a conduit leading to said burner by Way of said opening, :a first closure device for an end of said conduit spaced from said burner including adjustable inlet means for primary air, a pipe for gaseous fuel leading to said conduit by way of said first closure device, devices contiguous with said pipe for gaseous fuel situated outside of said furnace, a sleeve adapted to he slid inwardly and outwardly of said opening selectively to be situated in covering, protecting relation Ito said devices or in uncovering relation to the devices, and a second closure device for said opening in surrounding relation to said conduit including adjustable inlet means for secondary air.

4. In combination, a furnace including a wall having an opening, a burner Within said furnace, a conduit leading to said burner by way of said opening, a first closure device for an end of said conduit spaced from said burner including adjustable inlet means for primary air, a pipe for gaseous fuel leading to said conduit by way of said first closure device, devices contiguous with said pipe for gaseous fuel situated outside of said furnace, a sleeve fitted to said opening in covering relation to said devices, and a second closure device for said opening within said sleeve in surrounding relation to said conduit including ladjustable inlet means for secondary air.

LAIRD C. MoKEE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,148,409 Roessler July 27, 1915 1,498,342 Blanchard June 17, 1924 1,538,456 Zimmer May 19, 1925 1,584,546 Jones May 11, 1926 1,890,816 Keith Dec. 13, 1932 1,927,019 Branche Sept. 19, 1933 1,937,974 McKee Dec. 5, 1933 2,025,089 Bulger Dec. 24, 1935 2,025,696 Branche Dec. 24, 1935 2,131,221 Crary Sept. 27, 1938 2,178,703 Robbins Nov. 7, 1939 2,263,170 Haedike Nov. 18, 1941 2,344,936 Zink Mar. 21, 1944 2,360,924 Wolfert et a1. Oct. 24, 1944 Schrader Jan. 9, 1945

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