US2196282A - Adjustable gas burner - Google Patents

Description

April 1940- J. T. VOORHEIS Y 2,196,282

ADJUSTABLE GAS BURNER Filed March 27, 1937 Y I e-7a f I 64 INVENTQR.

JUJZPH Z VW PHZ/J' W 22 Ma ATTORNEYS.

Patented Apr. 9, 1940 UNITED STATES Joseph '1. Voorheis, Oakland, Calif.

Application March 27,

i 9 Claims.

This invention relates to a burner construction and particularly pertains to an adjustable gas burner.

In the operation of various types of apparatus a requiring heat gas burner structures are provided, and due'to various designs of the structures to be heated, as well as to various heat requirements, it is desirable to vary the length of the flame produced, and to vary the width or spread 10 of the flame. It is the principal object of the present invention to providea burner structure, the essential features of which may be embodied in a burner capable of producing either a horizontal or vertical flame. Such "structure has a plurality of jets adapted tobe directionally controlled, whereby the length or flare of the combined flame from said jets may be changed at will by the operator without dismantling the burner construction, and while regulating the flame by simple means accessible from the exterior of the burner.

The present invention contemplates the provisionof a burner housing carrying a plurality of burner tips independently mounted with relation thereto whereby'they maybe adjusted to assume diiferent angular positions with relation to the central axis of the burner: throat','and whereby in certain instances anentire burner head carrying said tips may be moved bodily along the longitudinal axis of the burner throat.

The invention is illustrated byway ofexample in the accompanying drawing in which:

Fig. l is a view in vertical section through a burner installation of the type in which the flame is projected downwardly into the top of a'furnace and discloses the draft arrangement and the burner regulating means.

Fig.2 is a view in' section and elevation as v 'seen on line'22 of Fig l- Showing a'form of 40 burner construction embodying the present invention and being particularly adapted for installation inthe top of a furnace.

Referring more particularly to Figs;v 1 and 2 of the drawing 68 indicates the-top wall of a furnace having a throat 6|. A throat element 62 is disposed above the member 6| and is enclosed in a hood 63. of this member receives a cylindrical housing 65 with which an air conduit 66 communicates. The upper wall of the housing carries a top cover 61 by which access to the interior of the housing 65 and the furnace may be had. The b'ottom'of the housing 65 carries a cover plate 68 having a central opening 69 therethrough. This cover plate is formed in segments as shown in Fig. 2

The upper horizontal plate 64- 1937, Serial No.13 3,387

of the drawing and is reinforced by ribs 68. The segments are preferably made of special heat resisting metal. This opening is normally closed by a draft door 18 which is connected with rod ll extending upwardly through the wall 6'! and-.5 threaded at its outer end to receive an adjusting wheel 12 which may be rotated to move the rod ll longitudinally and lift or lower the draft door 1 8 to regulate the draft or remove the door completely. The fuel from the burner may bell, ignited through the torch doors'l 3 and '14 which I are formed through the members 61 and 68, respectively, and are closed by covers 15. These covers may be swung to an unobstructing position by rod 16 upon which they are both mounted. Arranged in equal spaced circumferential relation to each other around the central vertical axis of the burner and rotatably supported thereby is a plurality of tubular air nozzles 11. These nozzles are formed with parallel walls curvedvzo longitudinally of the nozzles and terminating in an upper'verti'cal portion extending through the bearing opening in the plate 68 The upper endsof the nozzles have a cylindrical portion 18 cut away at the sides to permit air from the air; g5 conduit 66 to flow into and through the'nozzles. A damper disc 19 is vertically slidable within the portion 18 and may be moved to vary the volume of air flowing into the nozzles. This damper disc is notched to receive lugs 88 upon so the portion 18 of each nozzle and by which the nozzle may be'bodily rotated with the disc. Each of the damper discs is fastened to a sleeve 8|. -These sleeves extend through packing glands 82 in the top cover 61 and extend beyond the end 355 of a housing cap 83. The outer ends of the members 8| are externally threaded and receive a threadedhand'wheel 84 by which the members 8|, may be longitudinally adjusted. A hand wheel 85 is mounted on the outer end of each of the members 8| and is fixed with relation there- "to 'so thatwhen the hand wheel 85 is rotated the member 8| and its disc 19 will rotate a nozzle ll. Extending longitudinally through the tubu- -lar members 8| are gas pipes 86 which communi-.- -c'ate with jettubes 81-. These tubes are positioned 'within the air nozzles 11 and extend through a lug 88 whereby the jet-tubes 81 will be centralized relative to the nozzles 11. The tubes are preferably curved, the same as the nozzles, and since they are materially smaller in diameter and shorter than the nozzles Tl within which they occur, air may pass through the nozzles to support combustion.

In the operation of the present device it will PATENT OFFICE be seen that air is delivered through the conduit 66. This air may be preheated if desired. The air flows downwardly through the side walls of the members 18 and passes into the furnace through the air tubes Tl. In the path of travel of the air through the tubes 11 it will be seen that the gas nozzles 81 will be completely enveloped. Thus the air and gas will have an opportunity for thorough mixing within the air tubes ll and will be projected into the furnace at high velocity. The gas will tend to draw the air into the furnace if normal pressure occurs within the housing 65, but it is evident that if pre-heated air under pressure is delivered through the conduit 66 the velocity of the gas and the air will be greatly increased as the flame is projected into the furnace. The flame is directed into the furnace at a desired angle by rotating the member 8| by the wheel 85. The air flow is controlled by moving the member 8| longitudinally to adjust the damper plate 19. Ignition of the air and gas mixture may take place when the torch doors l3 and F4 are opened so that the flame of a torch may be projected through the opening into the furnace.

It will thus be seen that in the. forms of the invention here shown means are provided whereby the individual fuel jets may be adjusted to accurately control the size and shape of the composite flame which is created within the furnace, as well as the length of the flame and its flare.

It will further be seen that desirable means are provided in the structures here shown for supplying a forced draft of pre-heated air whereby high velocity of the combustion mixture will be produced and a high temperature will be created by the flame.

While I have shown the preferred form of my invention, as now known to me, it will be understood that various changes might be made in the combination, construction, and arrangement of parts, by those skilled in the art, without departing from the spirit of the invention as claimed.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A fuel burner comprising a housing adapted tob-e associated with a furnace throat and through which ai" may be conducted to the furnace, fuel distributing conduits disposed in said housing, a plurality of separate fuel nozzles connected to said conduits and rotatably mounted on said housing, said nozzles being formed to project fuel jets into said furnace throat and at angles to the central axis thereof, and means for rotating said nozzles to direct their jets at a desired angle.

2. A fuel burner comprising a housing adapted to be associated with a furnace throat and through which air may be conducted to the furnace, fuel distributing conduits disposed within said housing, a plurality of separate fuel nozzles connected to said conduits and rotatably mounted on said housing, said nozzles being adapted to project fuel pets into the furnace throat and at angles to the central axis thereof, means for rotating said nozzles to direct their jets at a desired angle, and means for individually adjusting said nozzles and disposing them at an angle to the longitudinal axis of said burner throat.

3. A burner structure comprising a housing disposed over a furnace throat, a plurality of noz zle elements, tubular and curved to direct fuel jets into the furnace at angles to the longitudinal central axis through the furnace throat, means for separately turning said nozzles to change their angular positions relative to the longitudinal axis of the furnace throat, and means for individually regulating the flow of air through said nozzles.

4. A fuel burner comprising a housing adapted for location over a furnace throat, a plurality of tubular curved nozzles associated with said housing and adapted to direct fuel jets into the furnace throat at angles to the longitudinal axis thereof, means for separately adjusting said nozzles to change their angular positions relative to the longitudinal axis of said furnace throat, a second set of nozzles circumscribing the first mentioned nozzles for supplying air to sa d first mentioned nozzles, and means for individually regulating the flow of air through said second mentioned nozzles.

5. A fuel burner structure comprising a housing, a conduit communicating with said housing for supplying air to the interior of said housing, a cover plate connected to said housing and provided with a draft opening, a throat hood, a draft door for closing said draft opening, means for raising and lowering said draft door so as to regulate the fiow of air through said draft opening, a plurality of nozzles rotatably mounted on said cover plate and having their lower ends projecting within said throat hood, a jet tube disposed within each of said nozzles for supplying I a gaseous fuel to said nozzles, each of said nozzles being provided with an opening for supplying air for admixture with the gaseous fuel in said nozzles, means for varying the volume of air supplied to said nozzles, and means for individually rotating said nozzles so as to set said nozzles at a desired angle relative to said cover plate.

6. A combination as set forth in claim 5, which includes a means for centralizing said jet tubes relative to said nozzles.

7. A combination as set forth in claim 5, in which said nozzles and said jet tubes are connected together for simultaneous rotation on said cover plate.

8. A combination as set forth in claim 5, in 5;:

which said nozzles are provided with lugs for centralizing said jet tubes relative thereto, and for connecting said jet tubes to said nozzles so that simultaneous rotation of said jet tubes and said nozzles is effected.

9. A fuel burner comprising a housing, a conduit leading from a source of air supply and communicating with, said housing, a plurality of tubular nozzles communicating with said housing, a gas jet tube disposed in each of said nozzles, a source of gas supply for said gas jet tubes, means for individually regulating the flow of air from said housing to said nozzles, and means whereby said nozzles may be set at desired angles relative to the longitudinal axis of said burner.

JOSEPH T. VOOBHEIS.

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