US1232878A - Liquid-fuel burner. - Google Patents

Description

w. A. WILSON.

LIQUID FUEL BURNER.-

APPLICATION FILED 1AN.29. I917.

Lw fiwo I PaIenIea July 10, 1917.

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A TTORNE YS.

w. A. WILSON.-

LIQUlD FUEL BURNER.

APPLICATION FILED JAN-29, 1917.

Patented July 10, 1917.

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a I 5% I v I I I x k .I Q a I i3 I w w; m], w I E a Ff w 1 WITNESS: IN V EN TOR. a 4 (am Byj'agt Jan I flM/FV/JMZ A TTORNE WILLIAM A. WILSON, OF SANTA CLARA, CALIFORNIA.

LIQUID-FUEL BURNER.

Specification of Letters Patent.

Patented July 14), 1917..

Application filed January 29, 1917. Serial N 0. 145,084.

To all whom it may concern:

Be it lmown that I, WILLIAM A. WILSON, a citizen of the United States, residlng at Santa Clara, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in Liquid-Fuel Burners, of which the following is a specification.

My invention relates to the class of liquid fuel burners, and more particularly to a burner adapted to be inserted into the firebox of a wood or coal burning cook-stove of the common type.

The object of the invention is to provide a-device of the type described which is cheap to manufacture; safe, simple and economical to operate; and easy to repair; and which may be installed in the fire-box of any ordinary cook-stove, to enable liquid fuel, such for example as kerosene, to be used in place of wood, or coal. This will be more fully set forth hereinafter, with reference to the accompanying sheets of drawings, where- 1n:

Figure 1 is an elevation of my complete burner, showing the fuel supply tank and the connection therewith.

Fig. 2 is a plan view, enlarged, of my burner on the line 2-2 of Fig. 3, the generator pipe being omitted.

Fig. 3 is a part-sectional side elevation, taken on the line 3-3 of Fig. 2, and viewed in the direction of the arrows, the generator pipe being included.

Fig. 4 is a transverse section, taken in the direction of the arrows on the line 44 of Fig. 3.

Fig. 5 is an end elevation taken in the direction of the arrows from the line 55 of Fig. 3.

Referring more particularly to the drawings, the reference numeral 1 designates a base, preferably formed of a relatively thin strip of metal bent into rectangular shape and set on edge, and adapted to lie within the fire-box of an ordinary cook-stove, not shown in the drawings, and to rest upon the usual gratethereof. Set in the upper portion of this base, and retained therein in any suitable manner, as for example by means of bolts 2, Figs. 3 and 4, is a rectangular burner casting or top plate 3, having mixing chambers or domes 4 projecting upwardly near each end thereof, and formed as shown in Figs. 2, 3 and 4, the openings 4 in the tops of said burners being U shaped, with the open side toward the front.

burner pipe 5 extends longitudinally and centrally above the casting 3, passing freely and revolubly through apertures 6 in the walls of the mixing chambers or domes 4. Said pipe is provided with an orifice or gas exit 7, in its upper side, disposed centrally of each burner opening 4, through which the vaporized fuel is emitted. One end of the burner pipe 5 is capped, as at 8, and the other carries an upturned elbow 9, the shoulders 8 and 9 formed by said cap and elbow serving to limit the lineal movement of said pipe 5 to that necessary to allow for expansion and contraction. The fuel jet or gas-exit orifices 7 are thus positively and accurately located with respect to the mixing chambers or domes 4.

Lying parallel with and above the burner pipe 5 is a vaporizer orgenerator pipe 10, connected at one end with said. burner pipe by means of an elbow 11, a short pipe or nipple 12, and the elbow 9. The other end of said generator is connected, by a feed pipe 13, with the fuel tank 14, Fig. 1. A portion of the feed pipe 13, shown at 13 in Fig. 1, lies in lineal alinement with the burner pipe 5, and a suitable packed slip joint 15, of any well known type, is inserted in said feed pipe portion 13, so that the entire assemblage of generator and burner plpes may be rocked about the burner pipe as an axis for a purpose to be presently described. A bracket 16 is secured to one end of the base 1, and at its upper portion has an arcuate surface 17, Fig. 5, upon which the feed end of the generator 10 may rest, and said arcuate surface is bounded by lugs 18, which form spaced seats and limit the lateral rocking movement of said generator.

The supply of fuel is preferably controlled by a safety shut-off valve 19 in the feed pipe 13 near the fuel tank 14, a regulating needle valve 20, near the generator, and a valve 21 in the burner pipe 5 between the two burners, which may be used to shut off or regulate one burner independently of the other.

The generator 10 comprises an outer pipe,

within which is carried a bundle or group of closely parallel tubes 22-Figs 3 and 5, preferably of copper, and of relatively small diameter. The function of these tubes is to provide as great a surface as possible for contact with the fuel, in order to conduct as much heat as possible from the outer pipe 10 to the fuel, to insure complete vaporization thereof, without unduly obstructing the flow of said fuel. course, that the fuel flows both throughand around the tubes 22, said tubes acting solely as heat conducting and radiating surfaces.

The generator pipe 10 serves as a support for flame spreaders or deflectors 23, Figs. 1, 3 and 4, one positioned over each mixing chamber 4. These flame Spreaders each comprise a circular plate 23, preferably formed with an annular downwardly turned rim 23, and having a lug or stem 24 formed upon the upper side. Said lug 24 is bored, as at 25, Fig. 4, and through said bore is freely passed the generator pipe 10. Any suitable means, not shown, may be employed for retaining the flame spreaders in lateral position upon the generator pipe.

The burner casting 3 is formed with a lineally disposed trough 26 extending the entire length of said casting in front of the mixing chambers 4, and with a ridge or web 27 extending between the rear portions of said mixing chambers, and rising from the surface of the casting 3. In starting the burner, liquid fuel is poured into the initial firing trough 26. Said liquid fuel in said trough is then ignited, and the burner and generator pipes are rocked to bring the latter into its forward position, in which posi* tion it is heated by the burning fuel in the trough 26, until sufficiently hot to vaporize the fuel within it. The control valve 20 is then opened, and the fuel, passing through the generator 10, is vaporized, and issues from the orifices 7 as a gas. Said gas is mixed, in the mixing chambers 4, with air drawn upward through said mixing chambers and the base 1, and burns, at said burners, with a blue flame. The generator and burner pipes may then -be rocked to their vertical position, or if it be desired to direct the flames toward the front of the firebox, they may be left in their forward position. It will readily be seen that, on account of the built-up construction of the device, the various parts thereof may be easily and quickly removed for repair or replacement. Thus the generator 10 may be readily removed, for cleaning or replacement, without removing the burner pipe 5; and similarly, the burner casting 3'may be replaced, without necessitating renewal of the base 1. The flame spreaders 23, moreover, being firmly carried by the generator 10, are not apt to become loose or displaced, yet they It is understood, of

may be quickly renewed, upon the removal of said generator pipe. I

1. A liquid fuel burner comprising 'a suitable base, a top plate carried thereby and having a mixing chamber near each end, a longitudinal firing trough disposed along one side of the top plate, a burner pipe extending through the walls of the mixing chambers and having a gas exit opening into each mixing chamber, said burner pipe being capable of only a limited lateral movement and revolubly mounted at its ends in the walls .of the mixing chambers, a'controlling valve in the burner pipe, tojpermit the use of one burner independently of the other, an overlying parallel generator pipe connected with the burner pipe, a series of openended parallelltubes disposed within the generator pipe and extending the full length thereof, a supply pipe connected with the generator pipe for feeding fuel thereto, and a vertical. bracket secured to one end of the base and formed'inits top with a pair of spaced seats engaging the generator pipe for maintaining the'same in different positions, scribed.

2., A liquid fuel burner comprising a base, a top plate onsaid base having'an :initial firing trough therein, said plate having near each end upstanding wall portions forming openended mixing chambers of-substantially U-shaped formation, the vertical wall on one side of each chamber being removed, a'

burner pipe extending through said cham ber walls and having a gas exit dischargsubstantiallyv as de- Y the burners, a. pipe with elbow connections at each end detachably joining one endfof the generator pipe with the adjacent end-of the burner pipe and limiting 'the'longitudinal movement of said pipes, a'valve inxthe burner pipe intermediate the gas exits, a

at its ends, a controlling valve in the burner pipe to permit the use of one burner inde: pendently of the other, an overlying parallel generator pipe conneoted with theburner pipe, a series of open-ended parallel tubes disposed Within the generator pipe and extending the length thereof, a supply pipe connected With the generator pipe for feeding fuel thereto, and means for maintainname to this specification in the presence of tWo subscribing Witnesses.

WILLIAM A. WILSON.

ing the generator pipe in its different posi- Witnesses: tions, substantially as described. R. B. JONES,

In testimony whereof I have signed my M. PEREIRA.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0.

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