US1118278A

US1118278A - Oil-burner.

Info

Publication number: US1118278A
Application number: US80573513A
Authority: US
Inventors: Robert G Greathead
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-12-10
Filing date: 1913-12-10
Publication date: 1914-11-24
Anticipated expiration: 1931-11-24

Description

R. G. GREATHEAD.

OIL BURNER.

APPLICATION FILED DEC. 10, 1913.

Patented Nov. 24, 1914.

RIM mu H 2 S w [Q E t H w M 0 4 WITNESSES R. G. GREATHEADL OIL BURNER.

APPLICATION FILED DEC. 10, 1913.

Patented NOV. 24, 1914.

2 SHEETSSHEET 2.

IN VENTOR, Robert 6. (Treat/wad WITNESSES ATTORNEY ROBERT G. GREATHEAD, 0F VALLEJO, CALIFORNIA.

OIL-BURNER.

Application filed December 10, 1913.

To all whom it may concern Be it known that I, ROBERT G. GREAT- HEAD, a citizen of the United States, residing at Vallejo, in the county of Solano and State of California, have invented new and useful Improvements in Self-Adjusting Oil- Burners, of which the following is a specification.

The present invention relates to improvements in oil burners, the object of the inven tion be ng to provide a burner which will be self-regulating as regards the amount of steam and oil supplied to the burner and will also burn without smoke.

In the accompanying drawing, Figure 1 is a central longitudinal section of the burner; Fig. 2 is a cross section on the line 22 of Fig. 1; Fig. 3 is an end view of the burner mouth; Fig. 4 is a partial longitudinal section of a modification of my invention; Fig. 5 is a cross section on the line 55 of Fig. 1.

Referring to the drawing, 1 indicates the main casting of my improved oil burner, having an enlarged cylindrical base portion 2, and a contracted cylindrical burner portion 3. In said base portion and leading into the burner portion is a steam conduit 4 connected with a steam pipe 6. An internally thickened portion 7 of the casting is threaded, as shown at 8, and screwed thereinto is the innerend of a cylindrical wall 9, forming, with the wall of the burner portion, an annular steam chamber 11. The outer end of said cylindrical wall 9 flares outwardly, so as to form, with the inwardly converging outer end of the cylindrical burner portion 3 of the casting, a narrow annular steam outlet 12. Near its inner end there extends outwardly from said cylindrical wall 9 a circular flange 13 which fits snugly at its outer edge against the inner surface of the cylindrical wall of the burner portion 3, and between said flange and said thickened portion 7 of the burner wall is a valve chamber 14, in which is an annular steam valve 16. From said valve chamber a circular series of steam ports 17 lead into the annular steam chamber 11 the steam from said valve chamber 14 obtaining access to said ports 17 by means of a circular series of passages 18 in the valve, said valve being,

' by means to be presently described, moved in an axial direction to vary the extent of registry of said passages 18 -with the ports 17.

Specification of Letters Patent.

Patented Nov. ea, 1914.

Serial No. 805.735.

Goaxially within the cylindrical wall 9 is a cylindrical wall 19, from which extend in a radial direction longitudinal guide ribs 21, the outer portions of which abut against the inner surface of the wall 9, so that said rlbs divide the annular space between the

walls

9 and 19 into longitudinally extending compartments 22. Said compartments communicate at their inner ends with an oil chamber 23 into which, by a conduit 24, oil flows from an oil pipe 26. At their outer ends they communicate with a chamber 27 which in turn communicates with a narrow, conical annular outlet 28 for the oil, formed between the outwardly sloping terminal portion of the wall 9 and the conical outwardly flaring end of the wall 19 which thus form an oil valve. At the inner end of the wall 19 and integral therewith, is ahead 29, and clamped to'said head by a nut 31 screwed on a reduced threaded portion of the head is the central portion of a thin, brass disk or diaphragm 32, the peripheral portion of which is clamped between the base portion 2 of the casting and a cylinder 33, by screws 34, extending through said cylinder and diaphragm and screwed into the casting. The diaphragm 32 being secured to the wall 19 makes a closure on one side for the oil chamher which allows said wall to be moved backward and forward without friction;

center of the diaphragm 36, and also extending slidably through a stufiing box 44 in the center of a web 46, formed integral with the cylinder 33, said tube 40 having at its inner end a reduced portion forming a shoulder 47, abutting against a side of the head 29, a nut 48 being screwed on a threaded portion of the tube on the other side of said head. Into the chamber 49 between the web 46 and the diaphragm 36 leads a steam pipe 51, and a compressedcoiled spring 52 rests between the stufling box 43 and the hub-35.

Extending through the tube 40 is a' rod 52 having at one end a reduced threaded portion 53 screwed in a bearing 5a secured to the hand wheel ll and having thereon a hand wheel 56. At its other end the rod 52 is secured to an air guide 57, which, in the form of the invention illustrated in Fig. 1, has radially extending ribs 58 abutting against the inner surface of the wall 19 and terminating in a conical outwardly flaring deflector '29, which, with the outwardly flaring inner surface of the wall 19, forms a conical annular air outlet 61. In the form of the invention shown in Fig. 4 there are secured on said rod 52 flat perforated disks 62 spaced apart by tubes 63, and, on the end of the rod 52 a concavo-convex disk 61 also perforated. By means of these disksthe air while supplied in sufficient quantity is prevented from flowing outward with too great force. Air is supplied to the interior of said wall 19 through holes 66 in the head 29 from an air chamber 67 between the diaphragm 32 and the web 46 and communi eating with the atmosphere by holes 68 through the cylinder 33. A steam pipe 69 extending through one of these holes and discharging through a hole 66 in the head 29 is used when necessary to clean out the air conduit and in like manner a pipe 71, leading into the oil chamber 23, is used to clean out the oil chamber and oil conduit.

The extent of registry of the openings 18 with the passages 17 is regulated by means .of three stems 72 attached at one end to the annular valve 16, passing through stuifing boxes 73 and carrying at their outer ends each two spaced disks 74; between which extends a spur ring 76 meshing with a worm 77 on a shaft 78 (see Fig. 5) extending through a bearing 79 and stuiiing box 81 to the outside of the burner, and having thereon a handle 82 by which it can be turned. Said spur ring is screwed upon a threaded portion 83 of the wall 19. By turning the handle 82 the worm 77 can be rotated, to rotate the spur ring 76, causing it to be screwed upon the wall 19, thus causing the stems 72, and also the valve ring 16, to be moved longitudinally and thus varying the extent of registry of the openings 18 with the passages 17. i

As the steam pressure in the boiler falls, the pressure on the inner side of the diaphragm 36 also falls, permitting the coiled spring 52 of the outer side thereof to press it inward, thus enlarging the oil outlet. At the same time the extent of registry of the passages of the openings 18 with the passages 17 is increased, so that the supply of steam to the burner nozzle is also increased. Conseuuently, the fire under the boiler is increased and the steam pressure is automatically restored. An undue increase of the steam pressure.in the boiler causes the fire 1 o liliminish and the steam pressure to again While, however, the steam pressure is thus automatically maintained constant, it will be seen that the supply of oil, steam, and air, can each be varied independently when desired. Moreover the oil, air and steam valves may each be adjusted while the burner is in operation, and the steam jets 69 and 71, for blowing out any foreign matter from the oil and air valves can also be used while the burner is in operation.

By reason of the oil flowing into the burner by gravity and in a cold condition, all of its more volatile gases are retained in the oil until drawn from the burner by the suction of the steam leaving the nozzle, and thus the most effective combustion of the oil takes place. The oil is all consumed, and a great saving of oil is the result, besides an utter absence of smoke.

I claim 1. In an oil burner, an oil conduit, an annular chamber around the oil conduit, a circular series of steam passages leading from a source of supply of steam to said steam chambers, a valve ring around said series and having a circular series of holes adapted to register with said passages, a

diaphragm movable by the pressure of said steam from the source of supply, an operative connection between said diaphragm and ring, whereby, when the pressure of the steam is increased, the openings to the passages are contracted, and conversely, and means for adjusting said operative connection by hand to vary the extent of said openings.

2. An oil burner having an annular steam chamber, a tubular wall guided within and spaced from a wall of said steam chamber to form therewith an oil conduit, an oil valve connected with said tubular wall, a diaphragm secured to the inner end. of said tubular wall to movably support the same, said oil burner having an air chamber on the side of said diaphragm remote from said oil chamber, a head at one end of said wall having an aperture communicating with said air chamber, an air deflector at the other end within said oil valve, and a diaphragm operatively connected to said tubular wall and forming a movable wall of a steam chamber, whereby said wall is moved longitudinally by the pressure of steam in said chamber.

3. An oil burner having an oil valve connected with said wall, a diaphragm secured to the inner end of said wall to movably support the same, said oil burner having an air chamber on the side of said diaphragm remote from said oil chamber, and said wall communicating at one end through an apertured head with said air chamber, an an deflector at the other end within said oil valve, and a diaphragm operatively connected to said Wall and forming a movable Wall of a steam chamber, whereby said wall is moved longitudinally by the pressure of steam in said chamber.

4. An oil burner having an annular steam chamber, a cylindrical wall coaxial with, guided within, and spaced from, said steam chamber to form therewith an oil conduit, an oil valve connected with said wall, a diaphragm secured to the inner end of said wall to movably support'the same, and form a movable wall of an oil chamber, said oil burner having an air chamber on the side of said diaphragm remote from said oil chamber, and said first-named wall having at one end an apertured head communicating with said air chamber, an air deflector at the other end within said oil valve, and a diaphragm operatively connected to said wall and forming a movable wall of a steam chamber, whereby said wall is moved longitudinally by the pressure of steam in said chamber.

5. An oil burner having an annular steam chamber, a cylindrical wall coaxial with, guided within, and spaced from, said steam chamber to form therewith an oil conduit, an oil valve connected with said wall, a diaphragm secured to the inner end of said wall to movably support the same, and form a movable wall of an oil chamber, said oil burner having an air chamber on the side of said diaphragm remote from said oil chamber, and said first-named wall having at one end an apertured head communicating with said air chamber, an air deflector at the other end within said oil valve, a

diaphragm operatively connected to said wall and forming a movable wall of a steam chamber, whereby said wall is moved longitudinally by the pressure of steam in said chamber, and means for independently moving said wall.

6. An oil burner having an annular steam chamber, a cylindrical wall coaxial with, guided within, and spaced from, said steam chamber to form therewith an oil conduit, an oil valve connected with said wall, a diaphragm secured to the inner end of said wall to movably support the same, and form a movable wall of an oil chamber, said oil burner having an air chamber on the side of said diaphragm remote from said oil chamber, and said first-named wall having at one end an apertured head communicating with said air chamber, an air deflector at the other end within said oil valve, a diaphragm operatively connected to said wall and forming a movable wall of a steam chamber, whereby said Wall is moved longitudinally by the pressure of steam in said chamber, and means for independently varying the size of the passage for the steam to the burner.

7. An oil burner having an annular steam chamber, a. cylindrical wallcoaxial with, guided within, and spaced from, said steam chamber to form therewith an oil conduit, an oil valve connected with said wall, a diaphragm secured to the inner end of said wall to movably support the same, and form a movable wall of an oil chamber, said oil burner having an air chamber on the side of said diaphragm remote from said oil chamber, and said first-named wall having at one end an apertured head communicating with said air chamber, an air deflector at the other end within said oil valve, means for adjusting said deflector, and a diaphragm operatively connected to said wall and "forming a movable wall of a steam chamber,whereby said wall is moved longitudinally by the pressure of steam in said chamber. 1

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ROBERT Gr. GREATHEAD. Witnesses GEORGE E. MASON, CHARLES E. ZANDER.