US1532393A - Oil burner - Google Patents

Description

I. J. FOLTZ April 7, 1925.

OIL BURNER Filed Dec. 13, 1925 Md m 2 pm v Patented Apr. 7, 1925.

STATES 1,5323% ATE? FFECE.

IRVING J. FOLTZ, DECEASED. LATE F SEATTLE, WASHINGTON, BY FLORENCE O. FOLTZ, EXECUTE-IX, OF SEATTLE, WASHINGTON.

V OIL BURNER.

Application filed December 13, 1923. Serial No. 680,316.

To all whom it may concern:

Be it known that IRVING J. Fon'rz, de-

. ceased, late a citizen of the United States,

and resident of the city of Seattle, in the county of King and State of lVashington, did invent certain new and useful Improve ments in Oil Burners, of which the following is a specification. Y

E ly invention relates to burners of the type which are intended for burning oil,

and particularly a medium or heavy grade of oil, and for such purposes as heating of furnaces, and such other purposes where the capacity for making of a flame of consider- ]5 able size and heating possibilities is desirable.

The object of my invention is to make a burner which will eficiently handle such oil for the purposes mentioned, and further, specifically to make such a burner having the capacity for being regulated so as to burn a very small amount of oil with a consequent reduction in the heating capacity.

The novel features of my invention will be hereinafter specifically pointed out in the claims.

The accompanying drawings show my invention in the form of construction which I now prefer to use.

Figure 1 is a longitudinal section through the burner upon a central vertical plane, and Figure 2 is a corresponding section on the horizontal plane.

The main body of this burner consists of a tubular body 1, having mounted within and concentric therewith a central pipe or tubular body 3. These may be separate members or may be connected integrally as by two or more plugs or webs 30. An air delivery pipe as 8 is connected to the outer end of the larger tubular member 1. This pipe 8 is supposed to be supplied with air under pressure. This pressure need not be very great, but should be sufiicient to produce a draft through the burner of suiticient strength to somewhat atomize the oil fed thereto even when the burner is turned down low.

In the construction illustrated in the drawings, the two concentric tubular members l and 3 are supposed to be different parts of the same casting. The inner tube.

3, which is the oil atomizing tube preferably has its inner or dlscharge end 31 interiorly shaped as an expandmg cone, that is a cone with the large end towards the flame. The outer member 1 is preferably also somewhat contracted around the discharge'end of the inner tube 3. This may be effectively and conveniently done by providing the inneror discharge end thereof with a detachable ring a having a flange 40 which extends towards the center so as to provide a relatively reduced annular discharge opening between the same and the tube 3. Preferably the flange 40 which determines the outer diameter of the supplemental air discharge orifice, is located slightly backward or towards the outside from the extreme inner end of the atomizing tube 3. The ring 1 is shown as secured in place upon the outer tube 1 by a set screw as 42. It is also provided with a ledge -1 extending horizontally from its lower side, to which is connected a plate 50, which is cupped enough to retain in its upper surface a plate 5' of some refractorymaterial, preferably a material made from some clay product.

This plate 5 will become highly heated by the flame issuing from the burner nozzle. hen so highly heated it is possible to re duce the supply of oil to a very low amount, thus producing only a very small flame. This possibility arises from the fact that the highly heated body 5 will function substantially the same as a pilot flame, so as to maintain the heating flame ignited even when it is turned down to a minimum.

One of the webs 30 by which the atomizing tube 3 is held in position is provided with a bore 61 leading to the outside of the tube 1. A. lug provided on the outside of this tube is also provided with a bore intersecting the bore 61 with which is connected the oil supply pipe 6. p

' The burner as a whole, consisting of the inner and outer tubes 1 and 3 and the ports carried thereby, is mounted upon aplate 10 to which it may be detachably secured by means of side lugs 11 and bolts passing therethrough. The outer end of the tube 1 may be provided with an enlarged flange or cup-shaped member 2 to which the air supply pipe 8 is connected. A metal casing 7 is preferably mounted upon the outer periphery of the plate 10 and of such a length as to correspond with the wall in which the burner is mounted. This forms a convenient way'of mounting the burner and of providing a suitable chamber, which is connected with; but not apart of the furnace chamber. The burner is thus aiseinhled as a unit and may he mountee in the wallby any ordinary Workman;

I have found that the above burner, while being effective in producing large quanti ies of heat when supplied with a quantity of oil, is also capableof being regulated down to a very small flame Without danger of the flame beingextinguished. The oil which trihutes towards perfect combustion.

One advantage of making the flange L0 as part of the ring 4, which is separate from the tubular members 1 and 23, is that it-inay be adjusted axially relative to the latter. By-moidng the flange l0 outwardly of the discharge end 81 of the tube 3, the

a-ir'currents issuing from the end 31 and flange 4O Will-heaffected "in such manner as to cause spreading of the oil spray, and thusto-sp'read the flame; Movement of the flange 4:0 in the opposite direction will act decrease the spread in the reverse manner to of the flame.

hat I claim as my invention is:

1. An oil burner having an inner tube and means for disehargir; oil therein-to from one side, a concentric surrounding tube spaced therefrom to form an a; passage, the outer Wall of said annuia sage being at its outer end reduced diameter and terminating just ht outer discharge end ofthe inner t a common air supply eennectien said tubes.

2. In an oil burner, an inner and a tube integrally secured to form an a? i passage between then). an oil supply pipe discharging at the top side of the inner tuhe the bore of the discharge end of the inner tube being enlai ed to reduce the Walls thereof to a thin eege at-its end, and a cap fitting the di charge end of the outer tube and restricting the annular passage at jacent to thediseharge end oi the inner tuhe, and a oonnnon air supply connection to both tubes.

Signed at Seattle, King County, Washington this 2nd day of November, 1923.

FLORENCE 0. FOLTZ, Escecutr'm 0f lrvmg J Foltz, deceased.

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