US3028907A - Side wall burner arrangement - Google Patents

Description

April 10, 1962 w. c. HENSEL SIDE WALL BURNER ARRANGEMENT Filed May 27, 1960 Figure 2 Figure 3 //V VE/V TOR- Wo/Ier 0. Hense/ ATTORNEYS United States Patent 3,028,907 SlDE WALL BU 'ER ARRANGEMENT Walter C, Hensei, Palatine, IlL, assignor to Universal Oil Products Company, Des Plaines, Ill., a corporation of Delaware Filed May 27, 1M0, Ser. No. 32,461 4 Qlaims. (Cl. 1581) The present invention relates to an improved design and construction for a burner supporting arrangement in combination with a heating chamber, and more particularly, for supporting and positioning a burner in the side wall of a heater for upward firing along the inside portion of the wall in a manner providing high temperature radiant heating to the central zone of the heating chamber.

Usual heater designs and constructions which provide radiant heating from a side Wall, or from a center wall, install a series of spaced burners along the floor of the heater in a position to direct the flame and hot gases upwardly over the inside face of the wall. Floor installations, however, require that the heating chamber be raised above a foundation in order to install the burners and fuel lines below the heating chamber floor so that as a result, there is a more complex and expensive construction.

It is an object of the present invention to provide an improved and efficiently operating side wall burner arrangement such that the burner may direct flame against the inside wall of the heater.

It is a further object of the invention to provide a construction and arrangement for installing a burner through the side wall of the heater in a manner providing easily controlled adjustability of the burner position and the adjustability of a plurality of secondary air streams which are directed to the zone of the burner head or nozzle.

Briefly, the improved burner arrangement of the present invention for installation in the side wall of a heating chamber and for vertical firing, embodies in combination, an open-topped refractory block member having a closed end adapted for positioning within the heating chamber and having an opposing end provided with air inlet ports, a horizontally positioned dividing member spaced from the top, bottom and the closed end of the block member providing thereby an upper air channel, a lower air chan nel and an end air channel, at least one air inlet port within said inlet port end of the block member communicating with each of the upper and lower air channels within the block member, and means supporting and positioning a burner head within the block member permitting the burner to direct flame through the upper top of the block member.

Preferred embodiments of the burner arrangement incorporate adjustable meansfor controlling the air flow through the various air channels entering the block member and surrounding the burner head for directing vertical firing upwardly against the inside face of the wall of the heating chamber.

The improved design and construction of the burner arrangement, as well as advantages gained by providing a side wall installation, will be more apparent upon reference to the accompanying drawing and the following description thereof.

FIGURE 1 of the drawing is a sectional elevational view through a portion of a side wall of a heating chamber illustrating one embodiment of a side Wall burner arrangement.

FIGURE 2 of the drawing is a diagrammatic isometric view of a pre-cast burner block member.

FIGURE 3 of the drawing is a sectional view through the block member and the burner arrangement, as indicated by the line 3-3 in FIGURE 1 of the drawing.

3,928,907 Fatented Apr. 10, 1962 FIGURE 4 of the drawing indicates an elevational view of one embodiment of an air regulating plate or damper which may be used to control the flow of air through the burner arrangement.

In FIGURE 1 of the drawing there is shown diagrammatically a refractory wall '1 of a heating chamber having a suitable outside casing plate or covering *2. Supported within the wall 1 is an open-topped and openended block member 3 which has a closed end projecting inwardly from the interior face of wall 1 a short distance such that there is a small open area or gap between the upper end portion 4 of block 3 and the inside face of wall 1, whereby to permit space for the upward projection of flame and hot gases from a burner head 5 positioned within the block member 3.

Since the burner block 3 has a portion projecting inside of the heating chamber, it is preferably formed of a high temperature-resistant material such as a cast refractory of the type customarily used for burner blocks and for wall tile that are used as liners for high temperature furnaces and heaters, etc. In FIGURE 2 of the drawing there is shown an isometric view of one form of the burner block 3, such as may be formed from a suitable castable refractory material. It will be noted that this particular embodiment has an open outer end portion, such that when the block is mounted in the side wall 1 of the heating chamber its end will be flush with the outside of the casing plate 2 whereby air inlet means may be provided exteriorly of the heating chamber. It may also be noted that the present embodiment has ledges or shoulder portions 6 extending longitudinally at mid height of the interior of the block member so as to support a horizontally positioned divider member 7. The divider member '7, shown in both PlGURES l and 3, may also be made of a suitable temperature-resistant castable material, as indicated in the drawing, however, suitable alloy metal or other heat-resistant materials may well be used for this horizontal partitioning and supporting member.

It will be noted that the divider member '7 is efiective to support the burner head 5 and the fuel supply line 8 thereto, as well as effect the division of the interior of the burner block 3 into an upper air channel 9, a lower air channel it and an end air channel or space 11 which extends vertically around the interior end of divider end 7 and around the burner head 5. The portion of refractory wall 1 extending across the open-topped portion of the burner block 3 serves to provide the top enclosure for the air channel 9, while leaving an open space between the interior face of wall 1 and the upper lip portion 4 of the block 3. Thus, when the burner is in operation it will be seen that the secondary air may be passed through channel 9 and flow along the front edge of the burner head 5 while air through the lower channel 10 and the end channel 11 will flow around and back of the back of the burner head 5 in the space provided between the interior end of the divider 7 and the inside of the end wall portion of block 3. It is, of course, a feature of the present invention to provide a burner arrangement which is adapted to having the burner extend through a side wall portion of a heating chamber and to having a burner nozzle that fires vertically upwardly along the inside face of the heating chamber, thus, the burner head 5, as indicated diagrammatically in the present drawing, shows outlet ports for gas or atomized fuel along only the upper edge of the head. The present head or nozzle is shaped as a quadrant, or as part of a circular section, however, it is not intended to limit the present invention to the use of a burner which has any particular type of shape or design at the outlet head. Other fan-shaped heads may be designed and used which provide the desired effect of distributing the ho-L fiames and gases generally upwardly over the inside surface of wall 1.

As is best shown in FIGURE 1 of the drawing, a front or outside frame member 12 is placed over and attached to the casing plate 2 in front of the open front end section of the burner block 3. The frame 12 is provided with upper and lower air inlet ports 13 and 4, with the upper inlet port 13 aligning with and communicating with the upper air channel 9 and the lower inlet port i4 aligning with and communicating with the lower air inlet channel 10. The upper portion of frame 12 is provided with a pair of projecting rods 15 which extend outwardly from the face of the frame at the edges of the air inlet port 23, Also, to lower portion of the frame is provided with a pair of outward plate projecting rods 15 which extend from the face of the frame member 12 at each side of the lower air inlet port 14. The two pairs of rods 15 and 16 are utilized to support, respectively, air inlet regulating plates or dampers 17 and 18. As better shown in FIGURE 4 of the drawing, each of the air regulator plates 17 and 18 have an elongated shape with their outer end provided with holes 19 that are adapted to fit over and slide on the respective pairs of supporting bars 15 and 16. In operation, the plates 17 and 18 may be manually adjusted to regulate the quantity of air being admitted through the respective ports 13 and 14 by means of their positioning, or spacing away from the front end of the frame 12. In other words, by varying the distance in front of the frame 12 there is a variation in the resulting quantity of air which may be admitted into a particular opening. In order to maintain a desired adjustment of each of the air regulator plates 17 and 1%, suitable thumbscrews 20 may be provided through tapped holes in bosses 21 to in turn permit effecting a clamping on the respective pairs of rods 15 and 16. Each of the plates 17 and 18 are also provided with a notched opening to provide clearances for, respectively, the pipe 8 and the rod 24.

A further modification of the preferred construction of the present burner arrangement may be provided by having a plurality of holes or passageways 22 extend through the side and bottom portions of the burner block 3. The holes 22 should be positioned generally in alignment with the end air channel 11 and below the burner head 5 such that when the burner is in operation there will be caused an aspirating effect which will draw hot gases from within the interior of the heating chamber. The pulling of hot gases through the openings 22 from alongside of and below the burner block 3 will, of course, cause a certain amount of recirculation of hot corn :ustion gases within the heating chamber. It may be pointed out that when there is eflected the burning of atomized heavy oil fuels the hot gases from holes 22 will be aspirated to intermix with the cold air from outside the heater, thus giving a heated air stream to assist in the vaporization of the fuel from the burner head. Adjustable control of hot gas recirculation, through the holes 22, may be maintained by the use of a suitable sliding member 23 which rests on the interior bottom portion of the block 3 and is adapted to slide back and forth over the inside apertures of the passageways 22 through the burner block 3. As is best shown in FIGURE 3 of the drawing, the sliding plate member 23 may be of a channel shape or U-shaped so that it may simultaneously cover over holes 22 and through the lower side wall portion of the burner block. The movement and adjustment of the member 23 may be controlled exteriorly of the furnace chamber by means of an extension rod 24. Rod 24, as shown in Fl'GURE l of the drawing, is positioned along the inside of the portion of the burner block 3 and extends through the frame 12 and the lower edge of the air regulator plate 18 so that the outside end thereof may be reached manually for a back and forth adjustment to cover, or partially cover the gas recirculation passageways 22.

Minor modifications may be made in the design and construction of the present burner arrangement and still lie within the scope of the present invention, for example, it is obvious that more than one damper or air regulating plate may be utilized to adjust quantities of air passing to the upper and lower air channels 9 and 10 respectively, rather than use one sliding plate at each zone. Also, the removable divider plate 7 may be supported horizontally within the burner block 3 by suitable grooves or notches, rather than by the use of ledges or shoulders 6. Alternatively, the divider plate 7 may be permanently attached within the burner block by suitable attachment means, or still further, may be formed by suitable coring so as to comprise an integral portion of the block itself. In still another modification, more than one burner head or more than one fuel supply line may be inserted into and supported by a single block member and by one setting, particularly by utilizing a block member 3 having a suitable width and by coordinating the flame distribution from adjacent burner nozzles so as to give the desired upward flow of heat and flame. Also, the burner head and piping thereto may be varied to accommodate the type of fuel being burned. When burning oils, a suitable steam inlet line may be incorporated along with means for effecting the desired atomization of the fuel stream at the burner outlet.

The present description has been directed toward upward firing along a heater wall, however, similar burner arrangements may well be utilized along horizontal surfaces, as for example, along the top or floor portion of an oven or other high temperature heating chamber.

I claim as my invention:

1. In combination with a side wall of a heating chamher, an open-topped hollow refractory block member supported in an opening in the heating chamber wall and having a closed end extending a short distance beyond the inside face of the wall of said heating chamber and an opposing air inlet end, a horizontal dividing member spaced from the top, bottom and closed end portions of said block member providing thereby, a lower air channel and an end air channel, said dividing member and the upper surface of said opening in the chamber wall forming an upper air channel in the block member, an air inlet port frame connecting with said air inlet end of said block member and having spaced air inlet ports extending therethrough, an air inlet port in said air inlet frame positioned in alignment with the upper air channel within said block member and a lower air inlet port through said frame in alignment with said lower air channel within said block member, movable air regulating members supported from said air inlet frame and positioned in front of said air inlet ports to respectively control the upper and lower air channels, and a fuel supply line and a burner head within said block member and supported on said dividing member, the burner head being positioned in said end air channel to emit flame upwardly through a portion of the open top of said block member and along the side wall of the heating chamber.

2. The apparatus of claim 1 further characterized in that said refractory block member has spaced holes therethrough in the bottom and side wall portions thereof adjacent the closed end whereby gas flow may pass through said holes and upwardly through the zone of the end air channel between the end of said horizontal dividing member and the closed end of said block member.

3. The apparatus of claim 2 still further characterized in that a movable plate member is positioned within said block member adjacent the holes therethrough, and ad justment means connects with and extends from said movable plate to the air inlet frame end of said block member whereby said movable plate may be moved back and forth over said holes and adjust gas flow therethrough.

4. In combination with a side wall of a heating chamber, an open-topped hollow refractory block member supported in an opening in the heating chamber wall and having a closed end extending a short distance beyond the inside face of the wall of said heating chamber and an opposing air inlet end, a horizontal dividing member spaced from the top, bottom and closed end portions of said block member providing thereby a lower air channel and an end air channel, said dividing member and the upper surface of said opening in the chamber wall forming an upper air channel in the block member, means for introducing air to said upper and lower air channels to pass from said air inlet end of the block memberto said end air channel, and a fuel supply line and a burner head within said block member and supported 011 said dividing member, the burner head being positioned in 6 said end air channel to emit flame upwardly through a portion of the open top of said block member and along the side wall of the heating chamber.

References Cited in the file of this patent UNITED STATES PATENTS 1,114,994 Landry Oct. 27, 1914 2,096,555 Mettler Oct. 19, 1937 2,255,617 Hoak Sept. 9, 1941 2,308,902 Weller Jan. 19, 1943 2,659,424 Ferguson Nov. 17, 1953

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