US2375347A - Oil burner - Google Patents

Description

May 8, 1945.

B. CASTLE ET AL OIL BURNER 2 Sheets-Sheet l Filed April 28,` 1941 May 8, l945'. BQF. CASTLE Erm.

OIL BURNER 2l Sheets-Sheet 2 Filed April 28, 19.41

Patented May 8, 1945 n UNITED STATES, `p lyrglwlj oFF-ICE on. BURNER Boyd F. Castle and William W.Wodell, Quincy,

Ill., assignors to The Quincy Stove Manufacturing Company,` Quincy, Ill... acorporaton of `Illiv Application April 2s, 1941, serial No. 390.670

2 Claims.v (Cl. 158-91) This invention relates to improvements in oil burners and has an objectv to provide a device'of that character in which the oilwill befefticiently vaporized and gasie'd and in which'the gasied oil will thereafter low into a mixing chamber comprising a spaced sleeveandshell. each being perforated and the perforations in each being in substantial alignment and arranged to provide an -aspirating or injecting effect lwhereby-jets of air will be delivered into the mixinglchamber,

will admix with the gasied fuel and thereafter f l re to insure complete combustion of all of the I.

gasilied fuel.

These and other objects 'will be set forth and made clear in the following specification.

In the accompanying drawings We have illustrated one embodiment of` our invention.v In such drawings, v

Fig. 1 is a front elevation partially in section.

Fig. 2 is a sectional `plan view ofthe same on line 2-2 of Fig. 1.

Fig. 3 is a vertical section through a portion of y the device drawn to an enlarged scale.

Like numerals refer to like elements throughout the drawings, in which I designates generally a fue1 receiving base, illustrated asa casting, having a central air inlet IOa and spaced circular flangesy |012, I0c forming an annular channel Id open at the top. The upper edge of the flange Ib is recessed at Ie and the upper ridge of the outer flange IUc is similarly recessedl at IIJf as illustrated in Fig. 3, for example.-A

Projecting outwardly from the base having a central chamber |011. from which leads the duct Illi to the channel Illd. Chamber IUh. is

` openat the top Vand 4threaded to receive a plug or closure I2. There is also an inlet aperture IUIc,

internally threaded to receive the threaded end of a tube I3 which-projects outwardlyv of the burner casing and is provided with .an 'up-turned elbow I4 normally Vclosed by theplug |40, as illustrated in Fig. l.

lEach boss Ig is also providedwith anr inlet opening Illm in the bottomvthereof threaded to receive the nipple In connected to thefuel supply pipe I5 which communicates with a source'of oil or similar fuel and which may be associated with any suitable level-metering and regulating mechanism, operating automatically or otherwise to control the supply of fuel as may be desired.

While we vhave illustratedv only one boss I0g with chamber |017., it'will be recognized" that la vplurality of such members may be providedA if so desired. r

Surrounding the air inlet I0a and seated in the '1 recess I0e isthe sleeve I6 provided with apertures ISa land extending upwardly from the flange I0b.

Surrounding and. spaced from the sleeve I6 is the perforated shell I'I having apertures I'la therethrough. They shell may be located and maintained in fixed spaced relation to the sleeve IB by any suitable meansl but we have illustrated for convenience rivets I8 extending through the sleeve and shell and co-acting lwith spacer sleeves |19 between the sleeve I6 and shellY I1. as illustrated in Fig. 3. f u n It will be noted that the apertures Ilia are each located in alignment with a corresponding aperture I'Ia, the former being relatively small and the latter relatively large, for reasons hereinafter set forth. Secured in any suitable manner `to the interior of the sleeve I6 is the ring 20 which for f convenience we term an air ring, the same being I0 at each y, side/is a boss generally indicated by numeral Ing open at the top and bottom and in the formillustrated inclined upwardly and outwardly from the lower aperturevto the point where 1t is attached to the'sleeve I6 as by the `flange 20a, it being desirable to prevent leakage of air between the ring 20 and the sleeve I6. Mounted upon the top of the sleeve I6 and shell I1 is a hollow cap 22 closed at the top and provided with a downwardly extending flange 22a and a horizontal flange 22h, the latter serving to close the top of thechamber between sleeve I6 and shell I1; as

illustrated in Fig. 3.

The vertical wall 22e of lthe cap 22 is provided with a row of peripheral air holes 22d directed p outwardly as illustrated for apurpose hereinafter specified.

Seated in 'the recess If of the flange `II'Ic and extending upwardly therefrom in spaced relation to' the shell I1 is the outer casing 25 Aopen at the top as illustrated.` While we have illustrated the top of this casing as extended slightly 4above-.the

top of the cap-:22 it should be understood that combustion or flames is raised higher and higher above the bottom of the burner unit because the air for combustion is introduced with the gas and is suicient in such a case to support active combustion at thelower levels.

Should it be desired, the chamber |011l may be utilized as an individual pilot by removing the plug I2 and the plug Ida. and reducing the fuel supply to a point where insuiiicient fuel is supplied to Ih to exceed the rate of combustion therein and to overilow into the duct IIlz'.` In utilizing this auxiliary pilot, of course it will be understoodthat the pilot is initially ignited in any suitable manner and it is better when it is desired to initiate operation of the burner proper for heat delivery by increasing the fuel supply, to replace the .plug I2. The increased fuelthen operates to vcharge the gas chamber Id and is vaporized as described above.

It is to be understood `that in describing the ring 20 as an air ring, the chamber IvUd as a gas chamber, the chamber A as a mixing chamber, the chamben Ih as a vaporizing or a pre-vaporizing chamber, and the chamber B. as a combustion chamber, we have arbitrarily resorted to those termsand donot wish needlessly to be limited by such specific appellations.

While it will be obvious that our burner may be built in different sizes and with different dimensions, for the guidance of the men skilled in the art we point out that in a specic embodiment of our invention the casing is substantially inches in diameter and with the top thereof approximately 81/2 inches from the bottom of the base I0; the sleeve I6 is '7 inches in diameter; the shell I1 is 8 inches in diameter; there are five horizontal rows of holes in the sleeve and in the shell, the holes in the sleeve being number 38 drill size, i. e. approximately .0101 inch in diameter; the holes in the shell I1 are approximately iT-lz of an inch in diameter; there are 100 holes of number 38 drill size, i. e., .0101 inch in diameter in the cap 22; the outer diameter of the base `II! is approximately 10% inches and the inner diameter thereof approximately 6 inches at its base.

While we have described and illustrated one embodimentof our invention we do not wish to be restricted to that specific 'embodiment except as the appended claims construed with proper recognition of the prior art may demand such limitation.

We claim:

1. In a device of the class,cle`scribed, a base being provided with lanair inlet, an apertured sleeve mounted upon and projecting upwardly from said base 1member and in communication flow from the latter into the former, said shell being provided with a flangev overlying said fuel receiving chamber and located belowthe `apertures in said shell to form a gasification chamber, a casing surrounding and spaced from said sleeve and shell and a closure member mounted 'upon said sleeve and shell `to close the space therebetween at the upper end thereof, said closure member being provided with apertures in communication with said air inlet and arranged to discharge air into gases flowing'up-- wardlyaround said shell.

2. In a device of the'class described, a base member having a fuel receiving chamber, means to supply liquid fuel thereto, said base member being providedwith an air` inlet,` an apertured sleeve mounted` uponand -projecting upwardly from said base member and in communication memberhaving a fuel receiving chamber, means to supply liquid fuel thereto, said base member` with said inlet, an apertured shell. surrounding with said inlet, an apertured shell surroundingr and 4spaced from said sleeve, the apertures in said sleeve and shell being arranged in alignment and constructed to cooperate to produce an` aspirating effect upon flow of air through the apertures in said sleeve, the space between said sleeve `and shell being in communication with the fuel receiving chamber of said base 'member whereby gas may flow from the latter into the former, said shell being provided with a flange overlying said fuel receiving chamber and located below the apertures in said shell to form a gasification chamber, a casing surrounding and spaced, from said sleeve and shell and forming a combustion chamber therewith and a cap'mounted uponsaid sleeve and shell to close the space therebetween at the top, said cap being chambered and in communication with said air inlet, said c ap'also being apertured for passage of air from said inlet intosaid combustion chamber.`

BOYD F. oAs'I'LE. WILLIAM W. WODELL.

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