US698455A - Heating gas-burner. - Google Patents

Description

No. 698,455. Patented Apr. 29,1902.

E. s. CLARK.

HEATING GAS BURNER. (Application md mm 21, 1901.

.2 Shoets-Sheet I.

(No Model.)

Paten'ted Apn 29, I902. E. S. CLARK.

HEATING-GAS BURNER.

(Application filed Mar. 21, 1901.)

2 Sheets-Sheet 2.

(No Model.)

jwvenfar boiler-like, which serve as air-flues.

cape through numerous small perforations arranged in a circle around each of said airapertures as may become clogged. To rem- UNITED STATES PATENT OFFICE.

EDWARD S. CLARK, OFBOSTON, MASSACHUSETTS,

HEATING GAS -BURNER.

SFEOIFIQATION forming part of Letters Patent No. 698,455, dated April 29, 1902.

Application filed March 21,1901.

To all whom it may concern.-

Be it known that LEDWARD S. CLARK, a citizen of the United States, residing at Boston, in the county of Sufiolk and State of Massachusetts, have invented certain new and useful Improvements in Heating Gas-Burners, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others'skilled in r the art to which it appertains to make and use the same. 7

The invention relates particularly to burners such as are used for generating steam and. the like purposes, and it is illustrated by apparatus adapted for generating steam in a boiler suitable for a motor-vehicle, although the invention is not limited to such apparatus, but may be embodied in devices for use in any case where gaseous fuel is employed for producing heat.

It has been common to make a burner of thin sheet metalformed intoa closed box having two opposite sides connected-by tubes,

Gas be ing admitted into such box and allowed to esflues may be ignited and burned at or just above the point of escape. Such burners have proved very unsatisfactory for many reasons. For example, it is necessary to drill thousands of very small holes for the escape of the gas from the box, and this is expensive. A down-. ward blast is likely to drive the flame into the box. The upper plate is highly heated and quickly destroyed. The joints soon open by expansion and contraction ,and when spray of the liquid used is mixed with the vapor or. when the vapor condenses in the burner the latter leaks and the liquid spreading over the outer wall of the box ignites, becomes hot enough to ignite the gas within, and thus the burner is quickly ruined. When the burner is turned low to prevent useless generation of steam, as when the vehicle is standing still, it is readily blown out by a chance blast, and it is a very difficult matter to repair such a burner or to clean it or to clear such of its edy all these evils is one object of this invention.

pendent portion of a boiler-shell.

Another object is to provide for keeping up Serial No. 52,169. (No model.)

condensation when the flame is accidentallyv out and the gas still turned on.

Besides these there are other objects which will appear when the apparatus is described.

In the accompanying drawings, Figure lis a plan view of a burner mounted in the de- Fig. 2 is a section on the line 2 2, Fig. 1. partial section at 3 3, Fig. 1. Fig. lis' an elevation of the parts seen in Figs. 1 and 3looking from the left in Fig. 1. Fig. 5 is an enlarged sectional view showing, with adjacent parts, one of certain tubes seen in Fig. 1. Fig. 6 is a perspective view ofone of said tubes. Fig. 7 is a view similar to Fig. 1, showing a slight modification. Fig. 8 shows a further modification.

In all the views where the letters appear, A represents a dependent portion of the shell of a vertical boiler of any suitable type, and B a burner fitting and detachablysecured in that shell at any desired distance below the body of the boiler.

Fig. 3 is a.

As shown in Figs. 1 and 2, the body of the lower ends entirely through the bottom 0 of the cup. The cup is closed by an upper part or cover E, removably fixed to the cups walls and having, like the bottom of the cup, integrally formed hollow upwardly-extending frustums E, registering with those below and terminating at or near the upper ends of the tubes D, which they inclose, respectively. The interior diameter of each of these frustums is somewhat greater than the external diameter of the tube lying within it, and hence there is around each tube a long and narrow annular passage through which gas passes from the interior of the box to be further mixed with air delivered through the tube and then burned at or a little above the upper end of the tube and at some distance from the upper plate of the burner. As the burner fits the shell A, there is no draft through the space between the frustums, and hence there is anon-conductinglayer of nearly dead air between the flame and the plate, so that the burner is not unduly heated. As is seen clearly in Figs. 5, 6, the upper end of each tube D or the interior wall of the frustum may be provided with ribs D or D which keep the tube at all times central in the upper frustuni.

The gas usually employed is a hydrcarbon, and to supply it gasolene is brought from any suitable source of supply through a tube F, which passes over the burner to an automatic feeder or regulator G, without novelty, and thence to two nozzles H,which discharge itinto mixing-tubes I, delivering it in the burner among the pipes D.

Preferably the burner is provided with a small closed chamber J, (shown as extending entirely across the burner, though this is not essential,) having within it certain of the tubes D, which lie directly under the supplytube F. Into this chamber gas is introduced through a mixing-tube I, which gets its supply from the pipe F, but through a by-pass around the regulator Valve apparatus G. This by-pass is a passage K, leading a part of the gas brought by the pipe F through a pipe K to a nozzle 1 the amount passing being controlled entirely by a hand-valve 1 From this constrnction it follows that around a few tubes a full supply of gas may at all times burn ,thereby keeping the gasolene in the pipe F above fully vaporized, keeping the boilerpressure practically constant, and lighting all the other parts of the burner as soon as gas is supplied.

Should liquid gasolene collect in the burner, it cannot leak out, for the cup is of one piece; but it will be gradually vaporized and pass out around the tubes with the vapor never condensed in the burner. Should the burner need repair or cleaning, itmay be quickly removed from the shell. When removed, any one of the many tubes may be lifted out and restored to position or replaced by a new one, and, if desired, the top of the box may be taken off. This top, also, may be replaced by a new one at slight expense.

Preferably the upper and lower parts of the burner-box or the cover and cup are cast, and the cones in addition to their main functions prevent warping of the plates of which they are a part. It has been said that the long frustums also cause the gas to be burned at some distance from the body of the burner;

,but a more important result of their use is obtaining a long narrow passage for the inflammable vapor, for in the old form of burner ignited gas can be and often is driven through the short passages into the interior of the burner. I have found that the longer thepassage the wider it may be without danger. If the passage be of proper length, the flame is smothered, even if the passage be quite wide. I have obtained many advan tages in using the frustums; but it is obvious that other constructions wouldv give this long passage and secure safety and also save much of the cost of manufacture.

In Fig. '7 I have shown the modification of inverting the covering-plate, so that the cones may be within the burner. This form is less desirable than the other; but it secures many of the advantages above set forth.

Fig. 8 shows the modification of securing the upper portion of the burner to the boiler shell or skirting extending downward therefrom when the depending portion is not integral with the shell and detachably securing the lower part to the upper part. In the drawings the upper part E is shown as attached to the shell or skirting by screws 0 and the lower part 0 as secured by screws Q, con necting flanges P P of the two parts and inserted from below, so that they may be perfectly accessible. This construction permits removing the whole burner when necessary and also allows ready detachment of only the lower part and the tubes when, asis usually the case, this is all that is needed for cleaning or repairs. Fig. 8 also shows the tubes as without ribs and as terminating in the plane of the upper limits of the apertures of the upper plate, such construction being illustrated, since it is possible to make a fairlygood burner with other means or no means at all for holding the tubes central in the larger apertures.

What I claim is 1. The combination with a closed burnerchamber having in its top a series of perforations and inits bottom correspondingly-lo cated smaller perforations, of upwardly-removable open tube-sections each having its lower end seated in the bottom in registry internally with one of the perforations therein and with its upper end portion centrallylo= cated in the corresponding larger perforation in the top; whereby the upper perforations become annular passages in the axes of which air from below the chamber is delivered by tubes readily removed and inserted through said upper perforations.

2. The combination with a closed burnerchamber having in its top a series of perforations and in its bottom correspondingly-1m cated smaller perforations each surrounded by an annular projection or boss forming a tube-socket, of upwardly removable open tube-sections each seated in one of said sockets and havingits upper end portion held central in the corresponding larger perforation above and terminating below the upper end of said perforation.

3. In a burner of the class described, the combination with a one-piece cup-like lower memberdividedinto non-communicatingcompartments each having in its bottom perforations surrounded, respectively, by annular projections forming tube sockets or seats, of an upper member closingall the compartments and provided with perforations larger than those below but registering with them and Ice surrounded by analogous xbosses, tube -sections externally of less diameter than the perforations in the top, removably seated in said sockets, respectively, with it their upper end portions lying centrallyin the perforations of the top, through which they may be readily removed andreplaced, mixing-tubes projecting into said compartments, respectively, a vaporizing-tube passing over the perforations in the top of one compartment, injecting-nozzles supplied from saidvaporizing-tube and discharging into the outer ends of the mixingtubes, respectively, means for controlling the nozzle supplying the compartment below the vaporizing-tube, and independent means for controlling the supply to the remainder of the burner.

4. The combination with the boiler shell or skirting, of an upper burner member downwardly closing the shell and providedwith a series of perforations each surrounded by an integrally-formed tubular projection or boss,

a cup-like lower member separably connected with the upper member, to form therewith a closed chamber, and provided with perforations registering with those above and each EDWARD S. CLARK.

Witnesses:

EDWARD TLMCCLENNEN, LoUIs AUERBACH.

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