US1586149A

US1586149A - Oil burner

Info

Publication number: US1586149A
Application number: US19715A
Authority: US
Inventors: Griffoul Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-03-31
Filing date: 1925-03-31
Publication date: 1926-05-25
Anticipated expiration: 1943-05-25

Description

May 25 1926. 1,586,149

H. sRlFFoul.

OIL BURNER v Filed March 3l 1925 2 Sheets-Sheet 1 F 7 13 SIG 40. 73

"IIIIIIIII/ May 25 1926. 1,586,149

' H. GRIFFOUL OIL BURNER Filed March 5l 1925 2 Sheets-Sheet 2 5 x C I l 5 i l 1 l l l l I V; l W Y 'A "\\l .1,9 jrl T l -l i I i Ik I l 1 l mi Q N l Patented May 25, 1925,

findalle@ HENRY GRIFFOUL, F CLEVELAND, OHIO. V

OIL BURNER.'

Application filed March 31, 1925. Serial No. 19,715.

My invention relates to oil burners. Among the principal objects in view are: The pro 'ision of an improved oil burner having self-contained means for varying-:J` the i volume of air passing therethrough Without altering the pressure at which the air ispassed through the burner; to provide an improved burner having a self-contained preheater; to provide an improved burner adapted for operation with preheated air or dry steam at any temperature; to provide in an oil burner a novel manner of air distribution; to provide an improved and novel form of air preheater; to provide a novel manner of mounting such a preheater; and generally to provide a simple and efficient airl preheater for use in connection with crude oil gas burners.

`With these general objects in view and such others as will be apparent in the description, the invention resides in the novel combination, construction and arrangement of parts hereinafter described and claimed and illustrated in the accompanying drawings of Whichz Figure 1 is a vertical section through the burner.

Figure 2 is an end elevation from the right of Figure 1.

Figure 3 is an elevation of the air preheating element associated with the burner, and f Figure 4 is an end yelevation of the preheater as mounted over a furnace frame.

In detail, the burner comprises a semicylindrical nozzle carrying portion and a semi-cylindrical valve carrying portion 11, which portions are secured together by means of fastening bolts 12 passed through the annular flanges 13 and 14: provided on the respective portions for this purpose. The nozzle carrying portion 10 is provided with a constricted end 15 having disposed centrally thereon a burner vent tube 16, which tube communicates with the passage through the constricted neck 17 of an internal air chamber 18 secured by means of the bolts 19 on the constricted end'15 of the nozzle carrying portion and extending inwardly thereof. The inner end of the internal air chamber 18 is provided With an outwardly flared "air inlet 20. An air inlet pipe 21 is threaded into the side Wall of the nozzle portion 10 directly beneath the internal air chamber 18, Which internal air chamber is of a diameter materially less than the internal diameter of the nozzle carrying portion 10 so that this internal chamber is supported on the constricted ends 15 in spaced relation from the walls of the nozzle carrying portion 10 to provide an air chamber, hereinafter referred to as the external air chamber 22, occupying practically the entire interior of the assembled burner.

rlhe valve carrying portion of the burner casing is provided with a closed end Wall 23 on Which is supported internally thereof the base.- 21 of a self-contained oil reservoir 25 having an internal oil circulating passage 26 in communication With `an oil vinlet- 27 extending through the side of the casing, and

With an oil drain pipe 28 extending from the lowermost portion thereof through the casing. I

The oil reservoir 25 is tubular,.\vith an external diameter approximating the diameter of the interior air chamber 18 from which it is spaced, and the reservoir is supported in inwardly spaced relation from the end Wall 28 of the'casingv by meansof a web 29 extending from an oil delivery chamber 30 carried by the base 241 of the reservoir, which delivery chamber communicate-s with the passage 26 of the reservoir by means of av delivery passage 31 extending therebetween. The inner end of the chamber 30 is provided With a reduced extension 32 provided With a. central bore extending therethrough and formed Ito provide a seat for a needle valve 33 carried by the inner end of a valve stem 34 passed through a stuffing box 35 mounted on the exterior of the adjacent Wall 23, and operated by means of the hand Wheels 3G on the extreme outer end thereof.

`The needle valve 33y controls' passage of the oil to the bore of a tube 37 threaded into the end of the extension 32 and disposed longitudinally of the interior of the 'burner casing, terminating at its opposite end in a burner nozzle 38 disposed at approximately the center of the burner tube 1G and constricted neck 17 of the internal air chamber. The nozzle 38 is enlarged laterally and rounded being provided with a central aperture 39 in alignment with an ejector tip 10 carried at the extreme end of the oil tube 37, and having its rear Walls perforated as at 41 for the passage of air tl'ierethrough and out of the central aperture 39 in the burner.

Disposed within the internal air chamber 18 and longitudinally slidable upon the tube 37 is a hollow cylinder 427 the exterior whereof is provided with a series of teeth 43 in mesh with the case of a pinion 44 secured to the inner end of a. shaft 45 journaled to a bushing 46 extending through the side of the casing, so that upon rotation of the hand wheel 47 secured at the. outer end of the shaft 45 the cylinder 42 will be caused to move longitudinally upon the tubes 37.

The outermost end of the cylinder 42 is provided with a lateral annular flange 48 wide enough to close the passage leading from the internal air chamber 18 to the restricted neck 17 thereof when the cylinder 42 is moved into the position to bring the flange 48 into engagement with the end of the internal air chamber. lith the passage from the internal air chamber to the restricted neck 17 closed by the flange 48.l it will be seen that air is permitted to flow to the nozzle 38 through the interior of the cylinder 42, thereby creating a suction at the tip 40.

Owing to the disposition and arrangement of the parts hereinbefore described` heated air passing through the pipe 21 to the interior of the casing will freely circulate around all the interior thereof and especially around the oil reservoir 25 preheating the oil contained therein. The only means of egress for the air within the casing is through the flared end 20 to the internal air chamber 18 and through the restricted neel( 17 thereof to t-he burner vent tube 1G. lt will be seen that upon operation of the hand wheel 47 the cylinder 42 is moved longitudinally upon the tube 37, to control the flow of air through the restricted neck 17. lVith the air valve, formed by the cylinder 42 with the flange 48 in closed position, air is still permitted to flow through the burner by its passage through the interior of the cylinder out of the burner tip as described. thereby insuring a constant operation of the burner at all times irrespective of the adjustment of the volume of air passing therethrough. Owing to the direct longitudinal alignment of the delivery chamber with the bore of the oil tube 37, sediment and foreign matter collecting in the tube may be easily removed therefrom by simply removing the stuffing box and withdrawing the needle valve whereby cleaning oil may be passed through the burner from end to end- In Figures 3 and 4 I have shown the burner as associated with the air preheater, which 'comprises a hollow tube 50, semif-if'rular in form and rectangular in cresssection. The body of the tube is constructed of thin metal, with the Width of the tube being considerably greater than the height in cross-section to provide for a greater internal air expansion surface.

At each end the tube is closed and in communication with one end thereof is an air inlet pipe 5l, while extending from the opposite end is an air outlet pipe 52 in communication with an air inlet 21 of the. oil burner 10.

ln the application of my invention the body of the preheater is disposed over the top of a furnace frame which furnace is provided with an aperture 5G in the top thereof whereby heated gases and air may pass therethrough to impinge upon the interior curved surface of the preheater body 50 disposed directly thereabove. The furnace is of an improved type having the usual burner openings 57 extending thereinto.

lflhile l prefer to support the body of the preheater over the heat apertures 56 in the top of the furnace by reason of its rigid attachment on air conduits 52, it is obvious that any approved supporting means may be employed as desired without departing from the scope of the invention. By reason of the semi-circular formation of the body of t-he preheater the heated gases will impinge upon the under surface of the pre-- heater at approximately its central portion and be directed therefrom downwardly along the sides to secure the maximum heating effect upon the under exposed surface of the preheater.

Preferably, the dimensions of the sections comprising the body of the preheater 50 are such that the preheater will extend downwardly from the top of the furnace along each side of the furnace frame so that in addition to the direct heat passing through the heat aperture 56 the body of the preheater will receive the benefit of the heat radiating from the sides of the furnace frame along the lower end portion of the opposed ends of the preheater body. rl`he air inlet 51 is in communication with the atmosphere and air passed through the tube is heated to its maximum efficiency he fore passing through the air outlet pipe to enter the casing of the oil burner 10.

lllhile in this preferred form of the invention l have illustrated and described certain details entering into the construction and operation thereof, it is to be understood that the invention is not to be limited thereto, but that any desired changes or modifications may be made in the structural details thereof as will .fall within the scope of the invention as claimed.

l claim 1. An oil burner comprising a hollow casing provided with a` burner tube at one and, an air chamber support-ed in said casing and having an inlet and an outlet, a. valve controlled oil ejector in said casing, a delivery tube extending through said air chamber, an o-pen ended cylinder slidabley on said second-named tube and having a constantly open passage therethrough, one end of said cylinder having an annular flange for closing the major portion of said burner tube.

2. An oil burner comprising a hollow casing provided with a main burner tube at one end, a sec-ond casing within said firstnained casing and having its end open for' the passage of air and being in communication with said main burner' tube, a valve controlled oil ejector extending through said first and second-named casings, a cylindrical member mounted for sliding movement on said ejector and having an opening eX- tending entirely therethrough and open at all times, the forward portion of said member being provided with an annular flange closing the major portion of said main burner tube, and means whereby said member may be moved longitudinally on said oil ejector.

3. An oil burner comprising inner and outer casings having registering outlet tubes, an oil supply nozzle extending through said first and second-named casings and having a perforated substantially semi-spherical head communicating with the outlet tubes and said inner casing, a cylindrical member having bearings slidable on said nozzle, said cylindrical member being constantly open for the passage of air and adapted for communicating with the semi-spherical head of said nozzle, the forward portion of said member being provided 'with lan annular ange to close the space between said Isemispherical head and the walls of said burner tubes, and means whereby said member may be moved longitudinally.

ln testimony whereof I aiix my signature.

`HENRY GRIFFOUL.