US880000A - Gas-burning furnace. - Google Patents

Description

No. 880,000. PATENTED FEB. 25, 1908.

0. H. P. BASOM.

GAS BURNING FURNAGE.

APPLICATION FILED SEPT.11, 1906.

j OLIVER H. I. BASOM, OF OHITWOOD, MISSOURI.

GAS-BURNING FURNACE To all whom it may concern:

Specification o Letters Patent. Application neef september 11.1906. sain No. 334.196.

devices disposed in arallel relation.

`Be it known that I, OLIVER II. I. BA'soM, a devices are preferaby in the form of cylin' citizen of the United States, residing at Chitwood, in the county of Jasper and State of Missouri, have invented al new and useful Gas-Burning Furnace, of which the following is a s ecification. f

4 This invention relates to an apparatus for burning natural or consumers gas and combustible vapors generally foi` heating hot water or steam boilers, furnaces, ovens, and equivalent devices. Y

The invention has for one of its objects to improve and simplify-theronstruction and operation of apparatus of this character, so as to be inexpensive to manufacture, to keep in repair and to operate, andso as to produceV thorough combustion and high economy.

A further object of the invention is the provision of a burner which is adapted to operate efficiently with gas at a comparaltively .lowl pressure and which is practically immunefrom explosions. With these objects in View, and others, as will appear as the nature of the invention is better understood', the. invention comprises the various'novel features of construction and arrangement of parts which will bel more fully described hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustrates one of the embodiments of the invention, Figure 1 is a longitudinal section of a fire box or boi-ler equi ped with the. gas burning apparatus, the ont portion of the boiler being shown in elevation., Fig. 2 is a front elevation of the boiler and fire box, the j latter being artlyin section.

Correspon ing parts in the figures are indicated by similar characters of reference.

. In the 'present instance I have elected tor illustrate the gas burning ap aratus applied to the fire box of a steam bo er, butI desire,

to have it understood that the samevcan be used for hot water'` and steam boilers of vari? ders 8 of any size suitable for the re box or `Patented. Feb. a5, ieee.

These furnace in which they are to be used. )The s cylinders are spaced apart from each other and are surrounded by a mass ofbroken fire brick, or other refractory material, 9.. The inner ends of the cylinders are each closed by a head 10. are ap roximately flush with the front Wall of the lire box and ro'ect through the same. The space around t e ront ends of the cylinders is walled in by the bricks 11, so that air is admitted to the fire box only through the cylinders and the ash it. The'top half of each cylinder is provi edjwith rows of perforations 12 which extend from the rear to a point slightly short of the front end. The unperforated portion 13 serves as an initial mixing chamber which is separated 'from the main mixing chamber 14 by a perforated. Wall or disk 15, as shown in Fig. 1.

The front end of the initial mixing chamber 16 is open, so as to receive the jet of fuel from the burner nozzle, and to admit the necessary quantity of air to produce a combustible mixture. The air is drawn into .the several cylinders by the combined action of the draft through the furnace and the injector action of the gas jets. Thegas and air are subjected to a preliminary mixing in the chamber 16 and then pass through `the perforated wall 15 to the larger mixing chamber 14 where a more thorough mixing takes place. This enlarged mixing chamber also servesas an expansion chamber wherein the pressure is practically removed entirely from the gas The front end of the cylinders 8 and air, the mixture being drawn evenly into I the combustion chamberof the furnace by the draft created through'the bed of firebiick coveringA the grate. The fuel mixture from the large chamber is then drawn through the perforations 12 inthe fire brick by the force of the draft through the furnace. While passing through the fire brick, the mixture from the several cylinders is brought into contact with a larger quantity of air and intimately commingled therewith, so that the large proportion ofair enables'a large white flame to be produced that substantialiy fills the fire box and combustion space of the fur.

nace without A roducing soot and without the injurious e ect ofra, blue flame. It will thus be seen that the gas supply in passing from the point of admission to the point of combustion is subjected to three dierent stages of mixing With air, viz., in the initial' chamber 16, in the intermediate chamber 14 and in the fire brick space around the several devices 8, and in passing through the` perforated partitions separating them. It Will be understood that an approximately unlimitedl supply of air is furnished to the iire brick space for thereason that the latter is in communication with the atmosphere through the grate and ash pit.

The gassupplying device comprises a'plurality of nozzles 17 located at the front Iof the boiler With their tips slightly spaced apart from the open end of the initial mixing chamber 16, this being found to produce the best result. The lnozzles 17 are connected to a -manifold or header 18 at the floor line by pipes 19 each having a high pressure regulating hand valve 20 and a low pressure plug valve, 21 adjacent the nozzle thereof. The

.header is connected with a suitable source of gals, the pressure of Which is cut down to the l d esviredpoint by the valves 20.

From .the foregoing description, taken in .connection with the' accompanying drawing,

the advantages of the construction and of the l lperation ,Will be readily appreciated by o t ose skilled inthe art to Whic the invention appertains. To start the apparatus, the several valves 2() are opened and then the nozzle valves 21 o ened one by one and a .flame applied to t ie gas issuing irom each nozzle.\ A. small flame is thus produced in each initial mixing chamber i6 Which, as the .supply is increased by opening. further the lnozzle valves 21, becomes blue, and iinally,

as the gas supply is still further increased, the 'llame suddenly shoots through the cylinders and fire brick and burns in the -rebox space above the nre brick. l v,the lapparatus is practically n fue rlhe operation of eless and ented by back firing 'or explosion is means of the .fire brick and shape of the mixing devices. `With a furnace of a seventy horse power boiler equipped with this improved gas burning apparatus, it has been foundthat with a gas under" a headof four ounces and a su ply of eighty feet of gas per minute, the boi erwillopera'te at full eiliciency and the combustion takes place with a l of the invention.

'What is claimed is 1. The combination Withfa furnace having a grate therein, of a hollow gas mixing cylin- ,der extending longitudinally of the furnace made, when desired, as are Within the scope and serving as an expansion chamber for relieving the pressure fromthe gas, the upper Wall of the closed chamber 'being' provided with a set of emission oriiices, a nozzle discharging into the open ychamber of the cylinder at the exterior of the furnace, and serving to draw atmos heric air into the cylinder, and a -bed of rei'iactory material covering the grate and the perforated cylinder thereon., the draft of the furnace serving to draw vthe gas and air from the expansion cl amber and creating a. draft of air from ben-ath the grate to mix With the gas and air from the expansion chamber of the cylinder.

'2. The combination With a furnace emy chamber above it, of a row of horizontally arranged tubular bodies located above the grate, the inner end of each body being closed and the upper Wall thereof being provided r/ith gas emission orifices, the outer end of each body being open to the atmosphere, gas discharge nozzle adjacent to and directed into theA open end of each body, a manifold connected topand supporting the nozzles of the set, a perforated gas and air mixing partition, arranged transversely of each body at a point adjacent to the open end 'thereof and dividing each body into an initial gas and air mixing chamber that is open to the atmcsphere,. and a relatively larger gas and air mixing and expansion chamber between the. partition and the closed inner end of the tube, and a bed of reiractory material covering the grate and the set of tubular bodies and serving to create a draft that 'will draw the'mix'ed gas and air from 'the enlarged mixing and expansion chambers of the several bodies. v

ln testimony that I claim the foregoing as my own, l. have hereto affixed my signature in the presence of two Witnesses.

oLrvsRV n. r. Bison.

Witnesses: i

R. CARR, A. l?. GRANT.

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