US879806A - Boiler-furnace. - Google Patents

Description

N01 879,806. -PATENTED FEB. 18, 1908. w. N. BEST.

BOILER FURNACE.

APPLICATION FILED MAY 2.190s.

WITNESSES: I l 5 IQQ 720,

4m Ma A TTORNEYS UNITED STATES PATENT OFFICE. I

WILLIAM N. BEST, OF NEW YORK, N. Y., ASSIGNOR TO THE INTERNATIONAL CALORIFIO COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

BOILER-FURNACE.

.in the county and State of ew York, have invented new and useful Improvements in Boiler-Furnaces, ofwhich the following is a full, clear, and exactdescription.

This invention relates to improvements in boiler :f-urnaces in which oil is used as a fuel, the object being to rovide means not only for the purpose of at mitting air'requisite for combustion in the burning of a fuel, but also to provide means to deflect heat so that no impingement of heat will be deflected against any of the elements of the boiler.

Other objects of the invention will appear in the chem] description.-

I wil? describe a boiler furnace embodyin my invention and then oint out the nove features in the ap ende claims.

Reference is to e had to the accompanying drawings formin a part of this specification, in which simi ar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional elevation of a boiler furnace embodying my invention; F i 2 is a section on the line m-'-m of Fig. 1; an Fig. 3 is a section on the line y-'y of Fi 1.

Referring to the drawing, 1 designates the base-plate of the fire-box or furnace, 2 the side Walls, and 3 the front setting; and extending through openings in the front setting are burners 4 which receive oil, tar, or the like, through the pi es 5, and receive steam for mingling wit the oil or tar, through the ipes 6. Supporte on the base of the furnace and exten ed longitudinally thereof are rows of bricks 7, which are spaced apart to provide air ducts 8 which receive air through the usual ash pit door 9.

Supported on the rows of bricks 7 is a checker-work consistin of ordinary standard fire-brick 9; this chec er-work of fire-brick has an air-space between the rows of brick of approximately about one-sixteenth of an inch, through which air can pass from the ducts 8. Throu h these ducts the air will be drawn and distri uted evenly in the furnace or fire-box 10, thus giving an even distribution of oxygen requisite for combustion, be-

Specification of Letters Patent. Application filed May 2- 1906. Serial No. 314.783.

Patented Feb. 18, 1908.

tween the fan-shaped flames emitted from the burner or burners.

It is vwell known that in tar and also in many oils, there is a quantity of water which often causes a great deal'of difficulty and sometimes explosions, because of the fact that the water has .a tendency to put out the fire in the fire-box; especially if. the fire is low. I obviate this difficulty by the use ofan i niting chamber approximately as shown, t e same being made from refracting material, which retains the heat, keeping it above the igniting temperature for a number of minutes, while the pocket of water is passing out of the supply ipe and burner thus insuring the igniting of t e fuel when the tar or oil begins again to flow through the burner.

The igniting chamber as here shown consists of slabs 11 of refractory material into which the burner extends. These slabsare divergent from the front setting and extend upward from the checker-work and if desired a cover 12 may be placed thereon; this of course, also consisting of refractory brick. The cover will maintain the heat as close to the burner as possible.

Extended upward from the checker-work at theinner end of the fire-box or furnace is a cross wall 13 consisting of fire brick, the brick bein joined by tongues and grooves, as clearly s iown in Fig. 1. This cross wall is slightly forward of the brid e wall 14, thus forming an air space 15whic communicates with the ducts 8, and extending along the upper edge of this cross wall is an arch.16 consisting of refractory brick tongued and grooved to ether; this arch projects forward from t e cross wall and is inclined u ward in substantial parallelism with t e boiler tubes 17, and the arch is provided at the under side with a plurality of ports 18 which permit the passage of air from the air space 15 into the furnace.

With my method of equipment I et three distinct courses of flame and heat; rst from the burner or burners to the cross wall,

thence deflected by the arch, the flame and heat is forced upwardly until it strikes the front end setting, when it rebounds rearwardly and u wardly through the elements of the boiler, t us spending its power so as to do no injury to the elements of the boiler. Further, with a furnace made in accordance with my invention I provide highly superheated air requisite for combustion, and it is the only method that produces three distinct courses of flame and heat after removing the ordinary grate bars, and which thereby gives an even distribution of heat throughout the entire fire-box. M

Having thus described my'invention, I

claim asn'ew and desire to secure by Letters Patent:

' 1. In a furnace, the burner extending through'the front setting thereof, a plurality of rows of brick support'edon the base of the furnace and spaced apart to form air ducts, a bridge wall, a cross-Wall, a checker-work-of refractory blocks supported on said rows of brickfand from which, said cross-wall extends u ward, the said cross-wall beingspaced from the bridge wall to form an air space communicating with the air ducts, an arch at the upper portion of the cross-wall, and having perforations at its under side providing communication between said air ,space and the interior of the furnace, the

erases her, a burner communicating therewith, a

bridge wall, across wall spaced therefrom to form an air passage, a conduit for delivering air from the outside atmosphere to said passage, and an arch at the upper portion of the bridge wall closing the assage between the cross wall and the bri ge wall and can tending into the combustion chamber, said cross wall being provided. with perforations adjacent the lower side of the arch, whereby air ma flow from the air passage between the wa is into said combustion chamber and beneath said arch.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' WILLIAM N. BEST.

Witnesses:

JNo. M; BITTER,

C. R. FERGUSON.

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