US791515A - Hydrocarbon-furnace. - Google Patents

Description

PATENTED JUNE 6, 1905. 7

No. 791,515. I

' ,TQAJTYAS.

HYDROOARBON FURNACE.

APPLICATION FILED JAN. 24, 1903.

UNITED STATES Patented June 6, 1905.

PATENT OFFICE.

THEODORE A. TYAS, OF HOBOKEDL'NEW JERSEY, ASSIGNOR TO GUSTAV W. DRASEL, OF I-IOBOKEN, NEW JERSEY.

HYDROOARBON-FURNAOE.

SPECIFICATION formingpart of Letters Patent N0. 791,515, dated June 6, 1905.

A Application filed January 24, 1903. Serial No. 140,352.

To all whom it may concern:

Be it known that I, THEODORE A. TYAS, a citizen of the United States, residing in Hoboken, county of Hudson, in the State of New Jersey, have invented certain new and useful Improvements in Hydrocarbon-Furnaces, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to hydrocarbon-furnaces, and primarily to those parts of such furnaces as receive, vaporize, and deliver fuel into the burner-body and in which parts the fuel is treated to put the same in a condition for perfect combustion.

The invention is also concerned with the construction of the burner-body, which is designed to cooperate with the aforesaid parts to carry completely the vaporized fuel and any setttlings therefrom or unvaporized portions thereof to the edges of the burnersiits, Where it is consumed. In furnaces of this class the liquid fuel is not always completely vaporized before it reaches the burner or burners proper, and there is also frequently a sediment deposited thereby or a thickened mass which condenses therefrom, due, possibly, to impurities therein or, perhaps better, to the presence of some of the higher and denser hydrocarbons. This mass if allowed to remain Within the furnace parts, Where it collects, as is generally the case, gradually clogs the smaller openings therein, such as the burner-slits, and finally obstructs the furnace to such an extent as to render a complete overhauling of the same necessary before further use.

One object of this invention is to overcome this difficulty in hydrocarbon-furnaces and to provide a furnace of this sort in which very little trouble will be met with from this source. This object is effected by constructing the burner-body and its associated parts so that the fuel shall always be fed downwardly to the point of consumption, the entire fuel-conduit being free from ockets or similar obstructions in which the enser portions of the fuel might collect, and by pro- 'paratus embodying the invention is shown and which is capable of effecting the desired results just outlined, Fi ure 1 is a longitudi nal sectional view of a re-box in which the furnace has been set up, the burner and its associated parts being shown in elevation. Fig. 2 is a plan view of the burner and its associated parts removed from the fire-box. Fig. 3 is a view in front elevation of the burner-body, on a larger scale; and Fig. 4 is a detail view, in vertical section, on the plane indicated by the line 4 4 in Fig. 3.

In accordance with the invention the fuelsupply conduit A, broadly speaking, which connects the source of fuel-supply (not shown) with the burner-body B, has a slight downward pitch from the source of supply to the burnerbody, said conduit being continued down through the burner-body to the several burner-slits 6. Aside from this general pitch and from certain other features of construction to be referred to presently the form or shape of the conduit A may be such as will most conveniently meet the requirements of any particular case. duit is installed within a fire-box C, Fig. 1, where it will receive suflicient heat to carry on the va orization of the fuel, and the regulating-coc thereof and other controlling devices are preferably located near the furnace door or at some such point where they are conveniently accessible.

In tube A, which for convenience has been called a fuel-supply conduit, but which, as will presently appear, performs other functions than that of merely conducting the fuel from the source of supply to the burner, are

Said fuel-supply 0011-.

formed relatively large chambers c and (1, wherein the gaseous mixture is thoroughly eommingled with air and heated and vaporized and whereby a steady flow of fuel to the burner-body is effected. Into the chamber 0 leads the fuel-supply pipe 6, in which, if desired, a carbureter f may be placed, and below said pipe 6 an air-supply pipe 9, communicating with a compressor-pump or any other convenient source of air-supply and opening into chamber 0 in the direction of its length or in the same direction in which the fuel travels, both ipes e and g having valves e and g provided therein respectively. The chamber c communicates with the chamber d through a narrow pipe h, of which the end adjoining chamber 0 is made flaring, so as to fit evenly upon chamber 0, and thereby prevent the formation of any pockets in which any liquid portion of the fuel might collect. The chamber 01 likewise tapers off into a narrow pipe i, which is provided with a safety-valve 7', a trap is, and a controlling or fuel-supply-regulating valve Z. The safetyvalve is provided to relieve the pressure upon. the apparatus when the force of the expansion of the gaseous fuel increases beyond a certain point, and said valve may be of any approved construction. The trap 7c may also be of any approved constuction and is preferably located near the door of the firebox and just in advance of the regulatingvalve Z, where it may be examined from time to time to remove any condensed fuel or other matter which it may contain. The regulating-valve Z is provided to control the supply of fuel to the burner.

The burner-body B is preferably formed of a plurality of solid castings, each being slightly tapered to form when assembled wedge-shaped slits b, communicating with an air-chamber m, to which air is supplied through a pipe a. Each casting is also chamfered upon one of its front edges to form an inclined lower surface 11 in each burner-slit b. The several castings are provided with longitudinal grooves b and at each end with vertical channels Z1, communicating therewith, through which fuel is fed into the burnerslits. For this purpose when the burner is set up by the assembling of the several castings each portion 1' and i of the pipe i, which is divided at i, extends down through the corresponding series of channels I). At each point in the pipes i and i where they cross the passages formed by the grooves b a plurality of small openings are formed to permit the fuel to esca e from said pipes into said passages, and tie end portions of the pipes 11 and i are extended into the lower casting of the burner-body, where said portions terminate.

When the apparatus is in use, oil will be delivered to chamber 0 above a stream of air which is entering chamber 0 through the airsupply pi e. In this manner the oil is not permitte to drop upon and run down the sides or bottom of the chamber 0, but is to a large extent carried along by the force of the aircurrent which issues from the air-su ppl y pipe, and while being thus carried along is vaporized and mixed with air before it strikes the chamberwalls. If a carbureter f be employed, although it will be understood that such is not a necessity, the oil will first be delivered to the carbureter, where it will be mixed with a quantity of air and thence delivered in the form of line spray to chamber 0. The chamber 0, being of considerable capacity, permits the fuel to be heated and vaporized to expand freely and to be thorough y mingled with air. The reduction of the diameter of the conduit beyond the chamber 0 prevents the escape of the gaseous mixture before it is much heated and. expanded and causes sufficient pressure to be developed to cause the gas to rush with some force through the narrow tube 72 and to be discharged into chamber d, where it is further heated and expanded, heat being continually supplied to both the chambers c and d from the fire-box in which the conduit is placed. From the chamber d the fuel is discharged into the pipe i, where any portion of the same which has not been vaporized or any sediment which has been deposited therefrom may be collected in the trap is, the vaporized fuel passing along into the full passages of the burner-body. The air from the air-chamber m which is supplied to the wedge-shaped slits b then min les with the gaseous fuel and directs it in a b lowpipc fashion from the full passa es into the burner-slits, where it is consume The inclined lower surfaces of the burner-slits permit any solid or liquid matter borne by the fuel to be readily carried by the air-currents to the edges of the burner-slits, where it will be consumed. Finally, the solid or thickened portions of the fuel, which are carried beyond the trap and into the burnerbody, are in a large part collected in the ends of the pipes i and i" in the lower casting of the burner and from time to time the burner may be overhauled to remove such matter therefrom.

The relatively large chambers in the fuelsupply conduit assist in the vaporization, heating, and carbureting of the fuel to the extent that there is not only a better gas supplied to the burner-slits, but there is less fuel left unvaporized than is ordinarily the case. The elimination of all 3ocket-forming obstructions in the fuel-supply conduit and the continuous downward feeding of the fuel to the burner )ermit all the liquid matter which may con ense from the fuel in the fuelsupply tube to be carried along into the Finally, the

burner-body and consumed.

and comprising an expansion-chamber having a ta ered downwardly-inclined lower end, an a pipe leading from the lowest point thereof, a second expansion-chamber into which said ipe leads also having a tapered downwar y-inclined lower end and a pipe leading from thelowest point thereof,

to the burner and means for supplying oil and air under pressure to the first expanslon chamber, substantially as described.

2. In a hydrocarbon-furnace, the combination with a burner-body of a fuel and vaporizing'conduit arranged on acontinuous incline toward the burner-body and oomprising an ex ansion-chamber having a tapered downwar ly-inclined lower end and a pipe leading from the lowest point thereof, a second ex ansion-ohamber into which said pipe leads a so having a tapered downwardly-1nclined lower end and a pipe leading from the lowest point thereof, to the burner, a fuelsupply nozzle opening into the first expansion-chamber and an air-supply nozzle also opening into said expansion-chamber at a point directly below the fuel-supply nozzle,

substantially as described.

This specification signed and witnessed this 19th day of January, A. D. 1903.

THEODORE A. TYAS. Witnesses:

ANTHONY N. JESBERA, Looms VARNEY.

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