US1199895A - Oil-burning heater. - Google Patents

Description

M. E. HURLEY.

OIL BURNING HEATER.

APPLICATION FILED JAN. 12. I916.

Patented Oct. 3, 1916.

M. E- HuRLEY MILO E. HURLEY, OE'IVIISSOUBI VALLEY, IOWA.

OIL-BURNING HEATER.

Specification of Letters Patent.

Patentedflct. s, 1916.

Application filed January 12, 1916. Serial No. 71,733.

To all whom it may concern:

Be it known that I, MILO E. HURLEY, a citizen of the' United States, residing at Missouri Valley, in the county of'I-Iarrison and State of Iowa, have invented certain new and useful Improvements in Oil-Burning Heaters, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to stoves and heaters of like character, and particularly to stoves or heaters designed to burn oil wherein the oil is vaporized or gasified before it is burned.

The general object of my invention is to improve upon heaters of this character by so constructing the burner and its allied parts that the vaporized oil is thoroughly mixed with air as it is burned and that the flames issuing from the burner are forced by the draft of the stove downward and into the fire pot and that thus no heat is lost.

A further object is to improve upon the specific construction of the burner, provide for a ready vaporization ofthe oil prior-to its beingignited, and to provide further that the flames issuing from the burner shall be directed downward upon the burner so as to constantly vaporize the oil or other fuel which rises into the burner.

Still another object is to so construct the heater that it. may be readily cleaned and readily and cheaply manufactured.

My invention is illustrated in the accompanying drawings, wherein:

Figure l is a front elevation of a heater constructed in accordance with my invention; Fig. 2 is top'plan view; Fig. 3 is a vertical section. 3

Referring to these figures 1O designates an outer casing of sheet iron or other suitable material and inclosing an inner casing 11 forming a chamber 12 within which is located a fire pot 13 of refractory material. The inner casing 12 may be supported within the outer casing in any suitable manner and the fire pot may also be supported within the inner casing inany suitable manner. Preferab'ly the fire pot is detachable. The top 14 of the outer casing is formed with a central opening 15 wherein is located a downwardly extending draft pipe 16 which at its upper end is flanged so as to seat upon the margin of the opening 15. This draft pipe 16 extends downward below the upper end of the fire pot 13. The top 1& is also provided with a plurality of cleaning openings 17 each of which is closed by a lid 18 having a handle 19, these cleaning openings extending transversely of the top as illustrated in Fig. 2. The draft pipe 16 may also be provided with a cover 20 as indicated in Fig. 2 whereby it may be closed when the stove is not in use. Exteriorly of the inner casingll and at the rear of the stove there is a rearwardly inclined passageway 21 having a fiue opening 22 from which a flue may extend for the discharge of combustion products.

Disposed within the fire pot 13 and resting upon its bottom is a fuel vaporizing member 23 which consists of'a preferably solid casting having a central bore 24 and a circular chamber 25 at its upper end and into which the bore opens. The top wall 26 of this chamber is formed with a central opening screw threaded for engagement with a burner pipe 27 whose upper end is closed by a cap 28 having'perforations 29, these perforations being directedradially to the axis of the cap. The lower end of the bore 24: is screw threaded forengagement with the upper end of a feed pipe 30 which extends out through the casing 11 and the casing 10 and to a source of supply. This source of supply or tank shouldbe located at a higher level than the cap 28 so that fuel will be forced through the pipe by gravity and up through the member 23, pipe 27, and out of the perforations 29. The lower portion of the member 23 is formed with an annular cup 31. having outwardly flaring sides, which cup is designed to be filled with asbestos 32.

The lower end of the chamber defined by the outer casing 10 is formed with a sliding pan 33 which may be drawn out through an opening formed in the casing wall as shown clearly in Figs. 1 and 3. The object of this pan is to catch all dirt that drops to the bottom of the outer casing and to permit the removal of the dirt and soot so collected. The object of the openings 17 is also for the purpose of cleaning out the interior of the casing 10, while the fire pot maybe cleaned by removing the draft pipe 16. If the burner, cap or pipe should need cleansing they can be easily removed through the opening 15 and then replaced. The asbestos 32 may be also removed and replaced through this opening.

Attention is particularly called to the fact that the draft pipe 16 extends'down below the upper end of the fire pot 13 and that the burner pipe 27 extends upward above the lower end of the draft pipe and that the cap 28 is located above this lower end. The pipe 16 admits air to the burner and is in deed the only source of air. When the vaporized fuel is burning at the perforations 29 the vaporized fuel will be mixed with air at this point and the downwardly moving column of air in the pipe 16 will cause the flames of the burner to be forced downward around the pipe 27 and around the wall of the chamber 25. Furthermore, these flames will be forced downward against the walls of the fire pot 13 and upward through the open end of the fire pot. Inasmuch as the flames are forced downwardaround the burner 27 and the burner chamber 25 the liquid fuel which passes into the chamber 25 is continually vaporized and placed in condition for proper combustion at the perforations 29. 'At the same time the draft does not allow any fumes or combustion products from the burning oil to pass into the room but these'are carried out through the flue opening'22. Initially the oil or other fuel is vaporized by turning on the fuel and allowing it to issue unlighted from the perforations 29. This fuel will. drip downward along the pipe 27 and the top of the chamber 25 and into the cup 31 where it will saturate the asbestos. When the asbestos has become thoroughly saturated it may be ignited by applying a match thereto through an opening indicated in Fig. 1 and desig nated 34, this opening being formed in the wall of the fire pot and haying a surrounding wall extending to the side wall of the stove. This opening is normally closed by any suitable ClOOI' OI other olosure- It will be seen that the gas or vaporizedfuel passing out through the perforations 29 mixes with the air before the gas enters the fire pot. The heater is made of cast iron and sheet metal. and is so designed as to get thoroughly good radiation and good service by securing as far as possible all of the heat from the fuel. The heat has to pass from the fire pot toward the top of the heater and then down the front part of the heater, the casing 11 extending transversely entirely across the heater, and then beneath the casing 11 and up to the back part of the heater and out through the escape flue. The oil used for this heater may be kerosene oil or distillate oil but the latter gives the better results.

It is to be noted that the inner casing 11 extends entirely across the outer casing 10 as shown clearly inFig. 1 but that the front and rear walls of the casing 11 are spaced from the front and rear walls of the casing 10 and that the rear wall ofthe casing 11 extends upward as at ll into contact with the top wall of the casing 10. By reason of this construction the heated air, combustion products, etc, are forced upward toward the upper portion of the fire pot and then downward around the casing 11 and into relatively close contact with the front, rear and bottom walls of the heater and then upward and out of the flue so that the heat cannot pass directly to the flue but must travel a relatively circuitous course.

Having described my invention, what I. claim is: V I

1. In an oil burning heater of the character described, an outer casing, a fire pot therein, a draft pipe extending downward through the outer casing and into the fire pot, a member carried at the lower portion of the fire pot and formed to provide a vaporizing chamber, said member being connected to a source'of supply, and a pipe leading fromthe vaporizing chamber and extending upward into the lower end of the draft pipe and formed with a burner, the lower end of the draft pipe being spaced from the upper end of the vaporizing chamber and having a diameter approximately the same as the vaporizing chamber.

2. In an oil burning heater of the character described, an outer casing, a fire pot therein, a draft pipe extending downward from. the top of the outer casing and into the fire pot, a member carried at the lower portion of the fire pot and formed to provide a vaporizing chamber, said member'being connected to a source of supply, and a pipe leading from the chamber extending upward into the lower end of the draft pipe and formed with a burner.

3. In an oil burning heater of the character described, an outer casing, a fire pot mounted within said casing, a draft pipe extending downward from the casing open at both ends and having its lower end disposed below the top of the fire pot, a member disposed at the lower end of the fire pot and including a vaporizing chamber, said chamber being connected to a source of supply, a relatively small fuel pipe rising from said chamber and extending into the lower end of the draft pipe, and a detachable cap mounted upon the upper end of said fuel pipe above the lower end of the draft pipe, the cap having radially disposed perforations.

MILO E. HURLEY.

Witnesses:

T. L. FINLEY, T. Foss.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images