US1206292A - Fluid-injecting attachment for furnaces. - Google Patents

Description

W. N. BEST. FLU `ID INJECTING ATTACHMENT FOR EURNACES APPLICATIONYFILED MAH. 16. ISIS- 1,206,292.

Patend N ov. 28, 1916.

W. N. BESTlv FLUID I'NJECTING ATTACHMENT Fo'R FURNACES.

APPLICATION FILED MAR. l5. l-9l6.

Patented Nov. 28, 1916.

2 SHEETS-SHEET 2.

lllIll'al'lIAlVlv N. BEST, OF NEW YORK, N. Y.

FLUID-INJECTING ATTACHMENT FOR FURNACES.

Specification of Letters Patent.

Application filed March 16. 1916. Serial No. 84,545.

To all 'L ohom t may concern Be it known that I, WILLIAM N. BEST, a citizen of the United States, and resident of New York city, borough of Brooklyn, in 5f. the county of Kings and State of New York,

have invented certain new and useful lmprovements in Fluid-Injecting Attachments for Furnaces, of which the following is a specification.

This invention relates to certain improvements in furnaces and more particularly to certain improvements adapted for use in connection with furnaces burning coke, coal or other solid fuel.

My invention involves improved means for injecting and admitting fluid to the coinbustion chamber above the fire bed.

The device may be utilized for injecting liquid fuel and combustion supporting air so asA to greatly increase the temperature in the furnace, and adapted to carry a big load,

or it maybe used for admitting air to facilitate the combustion rof the gases and carbonaceous particles rising from the iire bed, and the securing of the maximum combustion actionv and the elimination of all smoke. `It may be brought into -or out of use at will and thus when burning oil, may take care of fiuctuating loads and increase very majas terially the efficiency of the boiler, or when used for consuming smoke,it may be brought i'ito operation only when fresh fuel has been added to the fire.

I do not wish to restrict the use of my device to furnaces burning carbonaceous or other solid fuel as it may be used in forging furnaces or in various other ways where a iquick heat is desired by the use of liquid fuel.

Reference is to be had to the accompany-- irig drawing illustrating one embodiment of my invention and in which similar reference characters indicate corresponding parts in vthe several views.

L In these drawings: Figure l is an outside faceyiew of a device constructed in accordance with my invention; Fig. 2 is a central vertical section substantially on the line 2 2; Fig. 3 is a transverse section on the line 33 of Fig. 2; Fig. l is a front view of a furnace, a portion thereof being broken away and showing two of my improved constructions employed in connection therewith, y

and Fig. is a side view of a furnace, a portion thereof being broken away.

In the specific construction illustrated in Figs. 1, Q-and 3, I have shown a furnace wall l() of any suitable non-combustible heat receiving material and provided with an opening l1 therethrough. This opening` may have substantially parallel top and bottom.

walls, but its side walls preferably flare inwardly as shown in F ig. 2l so that the inner end of the opening is of materially greater width than tbc outer end. Rigidly secured to the furnace wall at the opening is a cast iron box in the form of a collar or sleeve 12 projecting into the opening and held in place by the inwardly flaring` sides of the colla as shown in Fig. 3 and by a plate or flange 11'5- bolted along the upper edge as shown particularly in Fig. 2. The lower edge of this plate 13 has an aperture or notch through which the burner or injector may deliver.

The collar has two side auges 14, 14, which extenk'l downwardly and outwardly and are provided with oppositcly facing grooves 15 within which a closure plate 1G may slide. The edges of the plate may be tapered so as to fit within the grooves as shown in Fig. 3, while the upper edge of the plate may be curved so as to fit within a concave recess in the lower edge of a depending flange 17 integral with the upper side of thel collar or sleeve. The plate 16 closes the notch or aperture in the plate l?) when in raised position, but when lowered, substantially the whole opening comes below theburner instead of above, or at the sides.

Rigidly secured to the outer surface of the furnace wall at a point bel'ow the opening 11 is a bracket 1S to which is pivoted a lever' arm 19. Rigid with the bracket is a curved ,segmentbar 20 and the lever' carries a spring pressed dog 21 which may engage with the teeth of the segment to hold the lever arm l19 in any desired position. A link 22 ispivotally connected to the lever arm 19 and to lugs on the outer surface ofthe closure plate 16 so that the plate may be Inovedfto or from the closing position and rigidly held in either limiting or intermediate position.

Patented Nov. 28, 1916.

Supported just outside of the outer sur-L may be constructed substantially as shown in my prior Patent No. 752,195, issued February 16, 04. The burner has a. supply conduit 24 for delivering oil, tar, or other liquid c. semi-liquid fuel and a supply conduit 25 for delivering an expansible fluid such as air or steam. The sup )ly to the burnerma be regulated by suitable Avalves 26 and 2 in the supply conduits.

lVhen the device is used to help carry a )eak load or to take care of a temporary, but very high load, the closure plate 16 is lowered and the oil and expansible fluid are delivered to the burner. The `oil is vaorized and delivered in a substantially fan-s aped sheet above the bed of the fire. It-will be noted that the burner is located closely adjacent to the upper surface of the opening so that air may enter beneath the fan-shaped sheetof fuel vapor and properlv support the combustion of this fuel. rIhe closure plate 16 need be open to only a very sli ht extent to permit the injecting of this uel, and the amount of air which acts to support the combustion may be regulated by raising or loweringthe plate to the desired extent.

Vl en the device is 'employed to consume the smoke and gases resulting from incomplete combustion of the solid fuel, either the oil regulating cock 27 or the cut-0H valve maybe shut and only steam or comp air deliveredthrough the burner. This will enter the combustion chamber in a substantially Vfan-sha d sheet and a considerable quantit f' of a1r will be drawn in from the atmosp ere and beneath the burner by the injecting 'action ofthe ex ansive fluid. This will mingle with the smo e particles and the unconsumed gases and cause the combustion of both, thus increasing the efficiency of the furnace as well as saving fuel by the consum tion o f otherwise wasted fuels. The mec anical construction of the cast iron box lor sleeve and its attachments is such that the -maximum quantity of air may pass below the fan-shaped blanket of expansive fluid.

As previously stated, I do not wish to be limited to any particular type of furnace or particular location for my improved device.

-In Fig. 4 I have shown a, furnace having a front Iwall 30, end walls 81 and a grate 32. I have shown one of the end walls as being provided with an inlet passage 11 and the cast yiron box, closure and burner construc- 'tion as shown in Figs.k 1, 2 and 3, and have also shown the front wall as provided with .l a similar opening and fluid injecting devices.

It' willbe noted that these inlets are. disposedia sufficient distance above 'thevgrate `to come above,y the fire-bed. The paryrl location 'and arrangement maybe va without departing-'from the spirit of Ventron.

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

1. A furnace having an air inlet passage through the wall thereof and from the atmosphere to the fire box, the side walls of said passage flaring inwardly, a flange depending from the up r side of said passage at the outer end of t e latter and having a recess in its lower edge, a vaporizer disKosed adjacent the outer surface of said' ange and opposite said recess and adapted to deliver a liquid fuel through said passage in asubstantially fan-shaped sheet spaced above the lower side of said passage, anda closure slidable upwardly to vary the air inlet space below said vaporizer and adapted to engage with said flange and close said recess said vaporizer and into engagement with' said flange to cle said passage.

3.. A furnace having an air inlet tpoasaage 'through the wall thereof, a cast iron x dis- 2.. A furnace having an air inlet paage posed within said passage and having its y. outer surface inclined at an angle to they plane of the wall and including two opposed guides, a closure plate slidable between said guides, a lever ivoted to the wall below said passage, a lin connecting said lever and said closure plate, and means for locking said lever in position with said closure plate open to any desired extent.

4. A furnace-having anair inlet pesage lthrough the wall thereof, a cast iron box disposed within said passage and having its outer surface inclined at an angle to the plane of the wall and including two opposed guides, a closure plate slidable between said guides,'a lever Eivoted to the wall below said4 passage, a 1in connecting said lever and said closure plate, means for locking said lever in positlon with said closure plate o to any desired extent, and in for de 'vering a substantially fan-sha pansible fluid through said pesage in a line spaced a considera le distance above the lower wall of said p v 5: lA furnace having anair-inlet p through the wall thereof, the opposite side walls of said passa converging at their outlelr endhls, athmetal. nd wa s wit n e pesage im to r8- vent outward movement of nid box,`a p

engagm `with the loutersufaoe of the nace wal to prevent inward movement of xhavingconvergmg jet of existY the box.y said box having a pair of downwardly and outwardly extending spaced guides, a closure plate slidable between said guides to close said passage, and means adjacent the outer surface ot' said closure plate and adapted to deliver an exp'anshle fluid l inwardly through Said passage when said elosure is open.

Signed at Ne New York and day of March.

w York eity in the county of State of New York this lith 10 l). 1916.

VILLIAM N. BEST.

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