US2211684A - Air register for burners - Google Patents

Description

Aug. 13, 1940. A. l.. BAKER AIR REGISTER FOR BURNERS Filed Dec. 21, 1957 2 Sheets-Sheet l xNvENToR ALBERT I.. 19A/ffii Bye-,4 www ATTORNEY Aug. 13, 1940. A. l.. BAKER AIR REGISTER FOR BURNERS Filed Dec. 21. 1957 2 Sheets--Shee'tl 2 Flc-3.2.l

INVENTOR ALBERT L. BAKER WJ N. QJLMJ ATTORNEY l patented ug. I3, 1946 STTES UNE PATENT OFFlC- AIR REGSTER FOR BURNERS Application December 21, 1937, Serial No. ll80`,93,',`y

3 Claims.

This invention relates to air registers for fuel burners.

An air register constructed to embody my in vention may be used with gas as well as oil firing.

The air register is adapted to be attached to a.

l the burner or burners for mixing withvthe fuel to be burned, whereby turbulence and intimate mixing of the air and fuel are obtained.

The air register constructed to embody my invention is provided with pivotally mounted vanes which open outwardly and which may be moved manually as a unit to desired positions to control the amount of air admitted to the burner or burners.

In the drawings:

Figure' l represents a partial vertical longitudinal crosssection taken through an air register made according to my invention and in position around an opening in a furnace wall;

Figure 2 represents a partial transverse vertical cross-section taken substantially on line 2 2 of Figure 1;

Figure 3 represents a partial transverse vertical cross-section taken substantially on line 3-3 of Figure 1 with parts omitted to facilitate the disclosure; and

Figure 4 represents a vertical crosssection of a detail taken substantially on line 4-4 of Figure 1.

vReferring now to the drawings, the reference character I0 designates a portion of a furnace wall having a burner opening l2. The refractory wall i4 around the burner opening is flared as at I6. A burner assembly i8 projects into the furnace and comprises a burner casing 22 which is mounted in a guide sleeve 22 held in xed position in any suitable manner in an air register 24. The burner assembly is slidably mounted in the guide sleeve 22 as will be described in more detail hereinafter.

`The air register generally designated 24 is rigidly secured to the furnacey wall around the burner opening l2 for supplying air to the burner or burners of the burner assembly i8. `Air vanes 26 are pivotally mounted on the air register and can be adjusted as a unit for controlling the amount of air supplied to the furnace for the'v Y combustion of the fuel.

The air register 24 is preferably circular in shape and is open around its circumference so that air can be taken in through a large area. 5 The air register 24 comprises a flanged member 28 having its flange 3G extending into the furnace opening l2. Member 28 is secured to the exterior wall of the furnace lli in any suitable manner as by screws 32. A supporting plate member 34 v10 having a central, inwardly-directed flange 36 for receiving and supporting guide sleeve 22 is spaced from member 23 by spacing members 38. Plate member 34 is secured to the plate -28 by elongated bolts or the like 40 which extend through 15 lspacing members 38.

The vanes are mounted to open outwardly between plate members 28 and 34 and are secured along one edge to shafts 42 mounted for oscillation so that when the shafts are moved the vanes will be moved to open or closed position. The vanes 26 and shafts 42 extend at right angles to member 34. The mechanism for actuating the vanes will now be described. As shown in the drawing in Figure 3, the vanes are bent around the shafts 42 as at 44 and attached to the shafts in this way. Other means of securing the vanes to the shafts may be used. The shafts 42 are supported and mounted for oscillation in supporting plate member 34 and plate member 28 in the following manner. Each shaft 42 extends through an opening 4t in the supporting member 34 and through an opening 48 in the flanged plate 28. The outer end of each shaft extends beyond plate member 34 as at 49. The support for the` inner end of the shaft 42 in flanged member 28 may be omitted if desired. Each shaft may be provided with an abutment 5B. The shafts 42 are preferably arranged in a circle and the vanes 25 are so arranged thattheir free edges 5I rest on the bent, pivoted edges 44 of the adjacent vanes in closed position as shown in Figure 3 so that the air openings in the air register are substantially completely closed and no air will pass through the register to the opening l2 in the furnace. When it is desired to move the vanes 26 to open position, an operating mechanism is employed which will be now described to move the free edges 5I of the vanes outwardly around shafts 42 as pivots as shown in dot and dash lines in Figure 3. v

At its outer endl or the end adjacent plate member 34, each shaft 42 is i'lxedly secured to one end of a link 52, the other end of the link being pivotally secured to one endl of a connecting rod 5d. The other end of each connecting rod 5d is pivotally attached to a rigid projecting member S8 which forms part of a movable collar The projecting members 5d extend from the periphery of the movable collar 58. The collar is supported on guide tube 22 for oscillation and. by moi` ng the collar, the associated parts and linkages 52, 5d and 56 will be moved to actuate each shaft $2 and this in turn causes movement of each vane 26 as will be later described in more detail in the operation of the device.

The movable collar 53 has an operating member extending therefrom which is provided with a handle 62 whereby it may be moved to any desired position to move the vanes 255 to any desired position between full open and closed positions. Operating member is provided with a slot 64 to receive stationary, arcuate guiding member GS. Arcuate member 55 is secured to standards G8 by bolts '.30, the standards 58 being rigidly secured in any suitable manner to cover member 'f2 which is secured to supporting plate member 3f by bolts 'ift or in any other suitable manner. A wing nut 'f6 is threaded into operating member (itl and is adapted to be screwed against arcuate member 55 in order to hold the parts in any adjusted position.

The burner assembly is adapted to be moved longitudinally of the guide tube so as to vary the flame produced from the burner or burners. A gas burner i8 including burner casing 2d is slidably mounted in guide sleeve and is se cured to a vertical supporting member in any suitable manner as by bolts the lower end of the supporting member being provided with a slot ill! adapted to receive a horizontal supporting member S6 secured in any suitable manner to the exterior wall of cover (Sec Figs. 1 and 4.) A nu S53 adapted to engage member S5 is provided for securing the burner in adjusted position. An oil burner 9d is supported by and extends through the gas burner 'I3 and is secured to a vertical supporting menber by bracket The lower end of the supporting member is provided with a slot similar to slot Sli on the upright member for the gas burner whereby the oil burner may be moved to the desired position. A wing nut is provided for securing supper`- member i oil burner 9F in adjusted position.

The gas burner 'i8 a gas inlet and a burner tip ltill. The cil burner has an oil inlet and a burner tip 15:3. A deecting member ifi@ may be used adjacent thc gas burner tip IEE?. While I have shown an oil burner and a gas burner, it is to be understood that may use only one burner; or both burners may be used.

The operation of my air register wilL now be described. Whcn it is desired to begin operation of the burner, the wing nut 'l'G on the operating member 50 is loosened and the vanes 25 are moved to full open position by moving movable coller 58 to provide an excess of air for the burner or burners. The movable collar is moved in a clockwise direction as viewed in Figure 3 in order to move the vanes 25 outwardly to full open position as shown in dot and dash lines in Figure 3. I prefer to have the vanes 2G open outwardly because the area of opening or air admittance in full open position is greater than in a construction where the vanes open inwardly. By moving the collar 5S in a clockwise direction, arms 56 being connected thereto also move in a clockwise direction. The connecting rods 5/3 being connected to arms 56 and to links 52 move the links in a counterclockwise direction. The links 52 are connected to shafts l2 which are secured to the vanes 26 so that movement of the links 52 causes counterclockwise movement of the shafts 42 and vanes 25 and the vanes move outwardly to open position as shown in Figure 3 in dot and dash lines. The shafts 42 are mounted for oscillation in supporting plates 28 and 34 as above described.

With the vanes 26 of the air register 25 in open position, the burner assembly I8 or each burner separately is moved to the left in Figure 1 after loosening wing nuts 88 and 96. Fuel is then admitted to the burner or burners and the fuel streams are then ignited in the usual way. The vanes 26 are then moved in a closing direction to a position where proper mixing of fuel and air is obtained. The closing movement of vanes 26 is obtained by moving operating member E9 and movable collar 58 in a counterclockwise direction in Figure 3. My air register is adapted for use with oil ring as well as gas firing Solid fuels may also be used.

By moving the burner or burners to the left in Figure 1 from the position there shown, air admitted through the air register will be thoroughly mixed with the atomized oil or gas before the stream is discharged into the furnace. This will speed the ignition reaction of the gas or oil in burning and the diameter of the llame will be reduced. If it is desired to increase the diameter of the flame, it is only necessary to push the oil or gas burner to the right in Figure 1. In this way the effect of air mixing with the atomized oil or gas stream will be delayed and this will result in a greater ame diameter and a lower central velocity of the products of combustion.

The vanes 26 control the quantity of air admitted to the burner fuel outlet and direction of air flow. The vanes 2S give the admitted air a swirling or rotative motion. The air entering through the air duct or from the atmosphere is directed by the vanes 26 and vertically arranged spaced members 28 and 34 toward the center of the burner immediately adjacent the burner fuel outlet with the desired velocity so that the air is mixed with the fuel and is not by-passed or short circuited around the burner assembly directly into the furnace. Due to the rotative velocity and swirling motion given to the air by the air register, a turbulent ow is obtained in the air-fuel mixture which produces intimate mixing and consequently better combustion. Also the air passing into the air register has a relatively large velocity which carries the air toward the center of the air register, and due to the positioning and arranging of the vanes and the air register, the air is not short circuited into the furnace but is directed toward the burner fuel outlet. From the description and drawings it will be seen that the air register 24 is positioned against the furnace wall and all air to the furnace must pass through the air register and be directed by the outwardly directed vanes toward the burner assembly and stratication of the fuel and air is prevented.

While I have shown and described one form of my invention, it is to be understood that this is only for the purpose of an example and many modifications may be made within the scope of my invention.

I claim:

1. An apparatus of the character described in cluding an air register adapted to be positioned adjacent a furnace wall opening, a sleeve supported by said air register and adapted to receive a burner, a plurality of vanes mounted for pivotal movement on said air register and arranged near the periphery thereof for opening movement outwardly with respect to said air register, a horizontally arranged shaft rotatable on a horizontal axis for each vane, each vane being secured to its respective shaft whereby rotation Aof said shafts in one direction effects outward opening movement of said vanes, a link secured at one end to each shaft for moving said vanes, a collar mounted for oscillation on said sleeve, said collar having a plurality of spaced projecting members, and connecting rods between said links and said projecting members on said collar, each connecting rod having one end secured to the other end of its respective link and having its other end connected to a projecting member whereby the oscillatory movement of said collar effects movement of said shafts and vanes to control the amount of air passing through said air register.

2. An apparatus of the character described including an air register adapted to be positioned adjacent a furnace wall opening, a sleeve support-ed by said air register and adapted to receive a burner, a plurality of va-nes mounted for pivotal'movement on said air register and arranged near theperiphery thereof for opening movement outwardly with respect to said air register, a rotatable horizontally arranged shaft for each of said vanes, each of said yva-nes being se' cured tol its respective shaft whereby rotation of said shafts in one direction effects outward opening movement of said vanes, links secured at one end thereof to said shafts for moving said vanes, a collar mounted for oscillation on said sleeve, and connecting rods between the other ends of said links and said collar whereby the oscillatory movement of said collar effects movement of said shafts and vanes to control the amount of air passing through said air register.

3. An apparatus of the character described including an air register adapted to be positioned adjacent a furnace wall opening, a sleeve supported by said air register and adapted to receive a burner, a plurality of vanes mounted for pivotal movement on said air register and arranged near the periphery thereof for opening movement outwardly with respect to said air register, a rotatable horizontally arranged shaft for each of said vanes, each of said vanes having one edge portion secured to its respective shaft, links secured at one end thereof to said shafts for moving said vanes, a collar mounted for oscillation on said sleeve, connecting rods between the other ends of said links and said collar whereby movement of said collar effects movement of said shafts and vanes to control the amount of air passing through said air register, said collar having an operating member rigidly secured thereto and means for guiding the movement of said operating member and for holding said collar and vanes in adjusted position.

ALBERT L. BAKER.

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