US2295501A

US2295501A - Oil burner

Info

Publication number: US2295501A
Application number: US355228A
Authority: US
Inventors: David A Jones
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-09-03
Filing date: 1940-09-03
Publication date: 1942-09-08
Anticipated expiration: 1959-09-08

Description

Sept. 8, 1942. D. A. JONES r 2,295,501

OIL BURNER Filed Sept. 3, 1940 David 99. cfone s MM v Patented Sept. 8, 1942 i UNETED STATES PATENT OFFICE OIL BURNER David A. Jones, Webster Groves, Mo. I Application September 3, 1940, Serial No. 355,228

3 Claims.

This invention relates to oil burners and more particularly to an improved oil burner structure and an improved means for vaporizing or atomizing the oil in a furnace.

An object of this invention is to provide a burner or nozzle, which is adapted to be connected to an oil supply line and which is also adapted to be connected to a steam forming coil, so that the steam formed in the coil will provide the necessary suction means for withdrawing the oil from the oil supply source.

Another object of this invention is to provide an improved oil burner structure, which may be easily and quickly mounted in a conventional furnace structure and which eliminates the use of any moving parts in the furnace so that the burner will not readily get out of order.

A further object of this invention is to provide an oil burner structure including an oil vaporizing nozzle and means for generating steam, so that the steam may not only form a means for preheating and atomizing or vaporizing the oil, but also form a means for withdrawing the oil from the supply source.

A still further object of this invention is to provide a burner of this type including a means for initially generating steam in the steam generator, the means for initially generating steam being in the form of a pilot burner, which may be connected to a source of gas or other combustible fuel supply.

To the foregoing objects and to others which may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts, as will be more specifically referred to and illustrated in the accompanying drawing, wherein is disclosed an embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawing:

Figure 1 is a detail side elevation of a burner structure constructed according to an embodiment of this invention mounted in a conventional furnace structure, and

Figure 2 is an enlarged fragmentary longitudinal section taken through the nozzle and the lower portion of the steam generator or boiler.

Referring to the drawing, the numeral I designates generally a furnace of conventional construction, it being understood that the hereinafter described invention may be mounted in any suitable furnace, which may include a feed door structure ll, clinker door structure l2 and ash door structure l3. The furnace It may either be a hot air or hot water furnace, or if desired maybe a small steam boiler.

A steam generator or coil, generally designated as M, is adapted to be positioned within the interior of the furnace l0 and the generatorv I4 in the present instance is constructed from a single length of pipe, whichis bent in substantially V- shape with one side It thereof adapted to be in an uppermost positionand inclined to the horizontal and the other side It thereof, which is connected to the upper side it by an arcuate connecting member I1, is inclined to the horizontal and inclined reversely' from the inclination of the upper side 15. The upper side i5 is adapted to be. connected by means of a coupling l8 to a water supply pipeline 19. A cutoff valve ii! is interposed in the water supply line 19. and at a point between the cutoff valve 20 and the coupling [8 a water limiting valve 2| is interposed in the pipe line [9. A pressure gauge 22 may be connected to the pipe line l9 between .the coupling 18 and the limiting valve 21.

At a point between-thetwo va1ves20 and 2!, I have preferably provided an electrically operated valvemember 23, which may be connected to a suitable source of electric supply and this valve 23 may beof a type which will automatically cutoff the water supply in the pipe I9iunder temperature conditions or the like. The valve structure 23 is a conventional electrically operated cutoif valve, the details of which are well known. A pressure reducing valve 24 is interposed in the pipe l9 between th valve 2! and the electrically operated valve 23, so. as to reduce the pressure from the water supply before the water passes the limiting valve 2|. By means of the pressure reducing valve 24, which is of conventional construction, the water passing the limiting valve 21 will gravitatingly flow through the remainder of the pipe I9 and then downwardly through the steam generator member I5 through the arcuate connecting member I! and into the lower steam generating member l6. Preferably in order to retard the flow of water. in the generator l4 and to also. assist in more rapidly generating steam within the generator I4, I have mounted in the generator [4 a plurality of wire strands 25. These wire strands are preferably formed of metal which is highly heat conducting so as to assist in the. rapid generationlof steam within the generator [4.

A combined oil burner and atomizing nozzle, generally designated as 25, is adapted to be positioned within the furnace Ill at a point slightly .which is secured to the lower member above the lower generator member I6 and in a position substantially parallel with the generator member IS. The nozzle member 26 comprises an outer nozzle member 21 in the form of a cylindrical body, which at its forward end is formed with a jet or frusto-conical member 28. The rear end of the cylindrical member 27 has mounted thereon a cap 29 threaded onto the outer nozzle member 21. An inner steam nozzle member 30 is disposed coaxially within the outer nozzle member 21 and is formed, at its forward end, with a jet member 3|, which is positioned slightly inwardly from the forward end of the jet member 28. The steam nozzle member 30 extends axially through the rear wall 32 of the cap 29 and is connected to an L coupling member 33.

A short pipe member 34 is connected to the L 33 and the pipe 34 is connected to one side of a second I. 35. The L 35 has a nipple 36 mounted in the other side thereof and the nipple 36 engages in a rear wall 31 of a cap 38. The cap 38 is threaded onto the lower or rear end of the lower generator member IS. The steam nozzle member 30 may be secured in the end wall 32 in any suitable manner, such as by welding 39 or the like.

The outer nozzle member 21 has secured thereto, at a point intermediate the ends thereof and preferably at a point closely adjacent the rear end, a laterally extending intake nipple 40. The nipple 40 is connected to one side of an L 4! and a fuel supply pipe 42 is connected to the other side f the L 4|. The supply pipe 42 may have a cutoff valve 43 interposed therein and is adapted to be connected to a reservoir 44. The reservoir 44 is in the form of a small tank, which is adapted to be connected by means of a pipe 45 to a main supply tank. The oil is preferably discharged into the tank 44 by gravity.

In order to provide a means whereby steam may be initially generated in the steam generator I4, I have provided a gas burner member 46 positioned below the lower generator member l6,

l6 by means of a bracket member 41. The burner 46 may be disposed in substantially parallel relation with the lower member l6 on the generator and is adapted to be connected to a supply pipe 48, which has a cutolf valve 49 interposed therein.

In the use and operation of this burner structure the pilot burner 46 is initially lighted by opening the valve 49 so as to permit gas or other fuel to pass to the burner 46. The valve 20 may be initially opened and the valve 2| also initially opened to the deslred degree, so as to permit the water to gravitatingly flow through the pipe l9 and then down through the upper generator member l5 through the arcuate connecting member I1 and into the lower generator member [6. The electrically operated valve 23 may be controlled by a thermostat, or other suitable electrical means, which will cut oif the flow of water when the desired temperature at a particular point has been attained. The wire strands 25 in the generator l4 will assist in the generation of steam and after steam has been generated, this steam will pass through the nipple 36, the coupling member 35, the short pipe 34, the coupling member 33 and pass through the steam nozzle or jet member 38. The steam will be dis-- charged from the jet 3| of the nozzle member 30 and as the steam is discharged through the open end 50 of the jet 28, it will act to draw oil through the pipe 42 and nipple 40 into the nozzle member 21. The discharging steam will not only act in a manner as aforesaid, but will also act as a. means for preheating the oil and in addition for breaking up the oil into a spray. In this manner the oil will readily ignite and once the oil has been ignited, the flame from the burner member 26 will be discharged in the direction of the arcuate connecting member I! of the generator l4.

This will have the effect of generating steam in the arcuate connecting part II. After the burner 26 has been ignited and sufficient steam generated to draw in suificient oil from the tank 44 to operate the burner 26, the pilot burner 46 may be cut oif. The back pressure from the generator l4, which extends through the pipe 13 to the valve member 2| and the pressure reducing valve 24, will have the effect of automatically controlling the amount of water which will pass to the generator I4. This amount of water may also be controlled by regulation of the pressure reducin member 24 and the limiting valve 2|.

A burner structure constructed according to this invention may be positioned in any conventional furnace structure, and as there are no moving parts in the generator or burner proper, the device will not readily get out of order. This burner may be constructed at a relatively small cost in View of the simplicity of its construction and the simplicity of its operation.

The position and form of the generator l4 allows the water to freely flow by gravity from the upper end to the lower end of the generator, except for the loose strands of wire 25. The strands 25 coact with the generator l4 in effecting a quick exchange of heat so that there will not be formed any trapped water or trapped steam. This novel construction makes the burner structure particularly adaptable to automatic operation. The automatic control of the water passing to the generator controls the section of oil so that more or less flow of water will have a corresponding effect on the flow of oil.

The burner structure may be cut off by either 3 cutting off the flow of Water which will cut off the suction of oil, or the oil valve may be closed.

What I claim is:

1. A steam generator for connection to an oil atomizing nozzle comprising a V-shaped steam generator having its legs disposed in superposed relation and its base upstanding and merging into the inner ends of said legs, a closure cap on the outer end of the lower one of said legs, and a tubular steam conductor connected to said cap and to said nozzle, said conductor supporting said nozzle closely adjacent to and in parallel relation with respect to said lower leg whereby the flame emanating from said nozzle will encompass the inner portion of said lower leg and impinge against the lower portion of said base.

2. A steam generator for connection to an oil atomizing nozzle comprising a V-shaped steam generator having its legs disposed in superposed relation and its base upstanding and of longitudinally arcuate configuration, and merging into the inner ends of said legs, a closure cap on the outer end of the lower one of said legs, and a tubular steam conductor connected to said cap and to said nozzle, said conductor supporting said nozzle closely adjacent to said lower leg whereby the flame emanating from said nozzle will encompass the inner portion of said lower leg and impinge against the lower portion of said base.

3. A steam generator for connection to an oil atomizing nozzle comprising a V-shaped steam generator having its legs disposed in superposed relation and its base upstanding and merging into the inner ends of said legs, a closure cap on the outer end of the lower one of said legs, a tubular steam conductor connected to said cap and to said nozzle, said conductor supporting said nozzle closely adjacent to said lower leg whereby the flame emanating from said nozzle will encompass the inner portion of said lower leg and impinge against the lower portion of said base, and a plurality of metallic strands possessing a high heat conducting characteristic arranged in said lower leg.

DAVID A. JONES.