US2468450A

US2468450A - Perforated combustion tube oil burner

Info

Publication number: US2468450A
Application number: US776268A
Authority: US
Inventors: Koszewski Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-09-26
Filing date: 1947-09-26
Publication date: 1949-04-26
Anticipated expiration: 1966-04-26

Description

April 26, 1949, F. KOSZEWSKI PERFORATED COMBUSTION TUBE OIL BURNER- 2 Sheets-Sheet 1 Filed Sept. 26, 1947 FRANK KOJ'ZEWJ/fl,

2 SheetsSheet 2 WM w w K W OJ M g/ )k m 2C: W M? F. KOSZEWSKI PERFORATED COMBUSTION TUBE OIL BURNER April 26, 1949.

Filed Sept. 26, 1947 Patented Apr. 26, 1949 LIMITED S'l'ATEd QEFICE PERFQRATED COMBUSTIUN TUBE OIL BURNER 1 Claim.

My invention relates to oil burners, and more specifically to oil burners oi the type in which fuel oil is preheated before ignition, for achieving better oil volatilization, and combustion efficiency.

A primary object of the invention is to provide an oil burner of the above mentioned class which is extremely simple in design, strong and durable, and readily disassembled for cleaning.

ther objects and advantages of the invention will be apparent durin the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate 'ke parts throughout the same,

Figure 1 is a side elevation of the oil burner embodying the invention, parts broken away.

Figure 2 a horizontal section taken on line 2--2 of Figure 1.

Figure 3 is an enlarged fragmentary vertical section taken on line 3-3 of Figure 2.

Figure 4 is a bottom plan view of the burner, parts in section.

In the drawings, where for the purpose of illustration is shown a preferred embodiment of the invention, the numeral designates a lower horizontal base casting or oil reservoir. This base casting I3 is circular in plan, and includes a fiat circular bottom l 1, having a central screw threaded opening 12. The base casting further includes an outer vertical annular wall I3, and upstanding air intake nozzles 14, preferably three in number. The nozzles it are spaced inwardly radially from the outer wall 13, and they are circularly curved and concentric with the outer wall. The nozzles M are equidistantly spaced angularly, to provide vertical radial passages l5 between them. The concentric inner and outer sides It and ll of the nozzles preferably converge slightly toward their tops, Figure 3, and the end walls 58 of the nozzles are preferably circularly curved. The tops of the nozzles M are horizontal and flush with the top of the outer wall 13. The nozzles i l form arcuate air intake passages l9, which extend through the casting bottom H. The bottom H has a screw threaded opening 23 spaced radially outwardly from the opening I 2, and between such opening and the adjacent nozzle 14. The opening receives the screw threaded upper end of an oil feed line or pipe 2!. The base casting H3 is supported upon a vertical support or pipe 22, the upper screw threaded portion 23 of which enters the screw threaded opening I2 of the casting. The screw threaded portion 23 projects upwardly from the bottom II, but terminates below the top of the outer wall l3.

Mounted upon the top of the pipe 22, and having a central screw threaded opening 24!, to receive the portion. 23, is an inner horizontal circular casting or burner plate 25. This burner plate comprises circular bottom 26, smaller in diameter than the inside diameter of the outer wall l3, and forming therewith a vertical annular The outside diameter of the bottom is concentric with the wall 13. The burner plate further comprises a center thickened portion upon which is mounted an upstanding annular wall or 29. Spaced concentrically outwardly from the annular wall 29, and formed upon and integral with the bottom 25 are upstanding walls or flanges 3Q 3!. The concentric walls and 3! form an annular space 32 between them. Formed in the bottom 26, between the walls 3@ and 3!, are circularly curved slots 33, to receive the upper portions of the converging sides iii and ll of the nozzles I l. The slots 33 snugly engage the outsides of the nozzles, in assembly. The pipe portion 23 is screwed into the opening 23 of the burner plate, until the slots 33 engage upon the converging sides It and IT, to limit the downward movement of the burner plate, and form a seat for the same. The bottom 25 is continuous between the ends of the slots 33, to provide a unitary burner plate structure. The top edge of the outer wall i3 is flush with the top edges of the

annular flanges

29, 30, and 3|, in assembly, Figure 3. Formed in the bottom 26 near the ends of the slots 33, and spaced radially inwardly therefrom, are oil feed openings or holes 34.

Disposed upon the thickened portion 28 of the burner plate, and fittin close to the inside surface of the annular flange 29 is an upstanding annular perforated sleeve 35, projecting above the burner plate 25 for a substantial distance. Arranged between the annular flanges 3!] and 3|, and the adjacent sides l6 and H of the nozzles M, are similar perforated annular sleeves 36 and 3?, projecting above the burner plate for the same distance as the sleeve 35. An outer perforated annular sleeve 33, is provided with an annular bead 39, and mounted upon the outer Wall l3 of the base casting Hi. This sleeve 38 projects slightly above the tops of the

sleeves

35, 36, and 3i, and may be provided with a short conically tapered top portion 413, Figure 1. The

perforated sleeves

35, 36 and 37 and 38 are preferably formed of suitable heat resisting sheet metal.

Disposed in the annular space between the

flanges

29 and 30 is an upstanding annular wick 4!, preferably formed of a suitable absorbent noncombustible material. The wick 4| is disposed 3 directly over the holes 34 in the bottom 26. A similar annular wick 42, of larger diameter is disposed upon the bottom 26, outwardly of the wall 3| This wick may be of the same height as the wick 4|, Figure 1.

In use, fuel oil is fed upwardly through the line 21, and enters the base casting l0. A substantial oil reservoir is available between the bottom 26 of the burner plate, and the bottom of the casting II). This reservoir is filled with oil, and such oil is preheated by its proximity to the burner plate 25, above which combustion takes place. The oil level may rise slightly above the bottom 26 of the burner plate, and such oil goes through the annular passage 21, and the holes 34-inthe bottom 26. The oil above the burner. plate bottom 26 is thus evenly and thoroughly distributed thereon in a thin layer, which will readily volatilize and burn. The wicks 4| and42 absorb oil, and these Wicks are used to start the combustion.

Airenters the burner through the nozzles l4, and central pipe 22, to aid the combustion. The arcuate nozzles l4 insure'an even distribution and flow of air.

The concentric

perforated sleeves

35, 36, 31 and 38' form inner and outer annular combustion spaces A and B, with an annular air-flow space 0 between them. The perforations in the concentric sleeves allow passage of the incomin air from the pipe 22 and nozzles l4 into the combustion spaces A and B.

The above described burner has beenfound to efifect efficient combustion, and facilitates the preheating of the oil in the reservoir below the burner plate, as stated. The burner may be conveniently disassembled for cleaning.

It is to be understood that the form of my invention herewith shownv and described is to be taken'as a preferred. example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of the invention, or the scope of the claim.

Having thus described my invention, I claim:

An oil burner, comprising a substantially horizontal base casting, such base casting includin an annular outer wall and upstanding circularly curved air intake nozzles spaced inwardly from the outer wall and forming a substantially annular series of air intake passages, a substantially horizontal circular burner plate disposed above the base casting and inside of the outer wall and concentric therewith and forming with the outer wall an annular fuel passage, said burner plate also forming with said base casting a lower fuel reservoir wherein fuel is preheated, said burner plate being provided with a plurality of fuel feed openings, such openings being arranged inwardly of said nozzles, the burner plate having circularly curved slots to receive the nozzles and to snugly engage upon the same and including upstanding concentric annular walls arranged upon opposite sides of the nozzles and near the same and an inner annular wa1l,;up standing perforated concentric sleeves mounted upon the burner plate and disposed between the sides of the nozzles and the concentric sleeves; an annular perforated sleeve mounted upon the burner plate and having its lower end disposedf against the inner annular Wall, a outer'annulari perforated sleeve mounted upon the base casting and extending above the same and-concentric with the mentioned sleeves, and upstanding annular wicks mounted upon the burner plate and disposed between some of .said sleeves.

FRANK KOSZEWSKI.

REFERENCES CITED The following references are of record inhthei file of this patent:

UNITED STATES PATENTS Number Name Date;

1,986,526 Pickup- Jan. 1, 1935 2,032,332 Sherman Feb. 25, 1936. 2,047,303 Albree July 14,1936 2,144,052 Covoni Jan. 17,1939;