US2531272A - Vaporizing type blast whirl oil burner - Google Patents

Description

Nov. 21, 1950 J. o. HORBETZ 2,531,272

VAPORIZING TYPE BLAST WHIRL on. BURNER Filed April 29, 1948 2 Sheets-Sheet l Snnentor: JOHN 0 #055572,

Nov. 21, 1950 J. o. HORBETZ 2,531,272

VAPORIZING TYPE BLAST WHIRL OIL BURNER Filed April 29, 1948 2 Sheets-Sheet 2 Fig. 4.

Fig. 7

a7 3/ a7 ozmiffiwll I. 34 7 4 34 JOHN O. fioz557z Patented Nov. 21, 1950 UNITED STATES earner cosine veronramo TYPE BLes'r warns on. BURNER John 0. Hcrbetz, Salt Lake City, Utah Application April 29, 1948, Serial No. 23,947

5 Claims.

1 This invention relates to oil burners of the type adapted to maintain a body of oil for sur- -.tace vaporization and blast combustion, either with natural or forced draft.

A variety of burners of this type have heretofore been developed, but'so far as I am aware, none embody the structural features which I have found to. produce superior results in practice.

Among the objects: of my invention are:

To provide, at least in certain embodiments,

for the shifting of the cover relative; to. the oilcontaining vessel. for changing the. width: of the burner gap and varying the volume of the: flame at difierent locations along said burner gap;

To provide an improved oil: burner or the type concerned.

Further objects and; features of the invention will: become apparent from the following detailed description of the specific constructions illu trated in the accompanying. drawings- I In the; drawings, which exemplify rather than limit the inventive concepts:

Fig- 1 represents a: top plan view of one form of 1113 improved oil burner adapted especially for furnaces: and. heaters, flames being indicated schematically;

Fig. 2, a side elevation;

Fig; 3, a vertical section taken on the line i -3,, Fig, 1,v an: air conduitha-ving been add 4, a View similar to; that of Fig. l, but illustrating a. somewhatdifiere-nt construction adapted, especially for cook stoves;

Fig. a side elevation 6, a longitudinal vertical section taken on the line? fi-B, Fig. 4; and

Fig. 7, atransverse vertical section taken on the line l Fig.

. trough t6 adapted to contain a body of oil ii,

tank (not shown).

supplied in regulated quantity through the pipe is by any suitable means, such as a gravity flow The body of oil it presents a broad vaporizing surface lid.

The trough Ed has an outer wall is and an iiiher well it of lesser height, the latter defining a central opening 55- which serves as a passage for the inflow of air to the burner. If desired, an air conduit it, Fig. 3, may be fitted to the J opening it to supplyair from any suitable source by either natural or forced draft in well; known manner.

It is preferred that the trough {it be provided with three short legs H to furnish proper support within the fire pot of a furnace or other heater. Advantageously, the entire trough; is, a

casting of Suitable metal, such as. iron, and it is desirable that of the legs be provided with a passage l3, Fig. 3, into the outer end of which the cit-supply pipe 5 2; is threaded, the inner end opening into the bottom of the trough.

Superimposed upon the annular trough it is a circular plate cover It, which has a central conical deflector 2H depending into the; air-supply opening F5 for directingair outwardl toward the oil-containing trough. The cover [9 is supported on the inner and lower rim of the trough, that is to say, on the top of the inner wall i5- 01 the trough, by means of a multitude of curved heat-radiating fins 25 which depend from the underside of the cover and extend substantially radially intermediate the deflector 23 and the covers circumferential periphery. These fins 2!, seating as they do on the inner wall M of the trough, determine a circular burner gap 22 between the cover and the: outer wall l? of the trough. It should be noted that this burner gap 22 completely unobstructed, thereby affording free sweep for flames emerging from the burner. It should be noted, further, that, the fins 2t extend well below the outer rim of the trough: to, and are in fact disposed for the mostpart with-in the trough, thereby causing air from the air supply opening E5 to swirl; within the trough above the bodyof oil H prior to discharge through the burner gap. This, coupled with. the heat concentrating and radiating character. oi the fins, enhances the vaporizing action or the device: as welt as imparting a desirable whirling: motion to: flames emerging from the burner.

As illustrated, shorter fins 2'3 of less vertical depth advantageously" alternate with the fins. 21', andhang' freely within the trough. Hi immediately above the surface Ha of the bodyof oil. These 3 further enhance the vaporizing action of the device.

Advantageously, neither the long nor the short fins merge with the deflector 20, thereby leaving open entrances to the fiow channels between fins, such flow channels themselves being substantially unobstructed lengthwise to provide for unimpeded fiow therethrough.

Whil the circular form of burner above described is especially suitable for certain instances of use, the novel features of the invention may be incorporated in other forms. For example, the elongate form illustrated in Figs. 4, 5, 6 and 7 is especially suited for use in cook stoves. There, both the trough 30 and gap-defining cover 31 are of essentially rectangular configuration.

The trough 30 extends peripherally about an air-supply opening 32, which may or may not have connected therewith a supply conduit such as that illustrated at [6 in the prior figures.

As in the prior embodiment, the inner wall 33 of the trough 30 is of less height than the outer wall 34, and serves to seat heat-radiating fins depending from the underside of the cover 3|. this instance, only fins 35 at opposite ends of the cover are curved. They radiate from the semi-circular ends of an elongate deflector 36, and serve to effect a whirling action of air and flame at opposite ends of the burner in a manner similar to the embodiment previously described. As illustrated, all the fins 35 seat upon inner wall 33 of the trough and are disposed in major extent below the level of the outer peripheral wall of the trough.

Intermediate the length of the cover 3! are straight fins 31, which, as illustrated, merge into the body of the deflector 36, see Fig. 7. While these fins do not produce as effective a swirling action of the air above the body of oil within the trough as do the fins 35, they do direct the flow in definite paths within the confines of the trough as defined by the wall 34, and render effective aid to surface vaporization of the body of oil. Both the fins 35 and the fins 31 by their seating on inner wall 33 of the trough determine the extent of the burner gap 38.

In this embodiment, because of the equal depths of the fins, the cover 3! may be shifted forwardly or backwardly or from side to side to vary the character of the burner gap and thereby control the volume of flame at any given location along the length of such gap, this being particularly advantageous for cock stoves.

The oil-containing portion of the trough 30 is preferably divided into three zones by the low partitions 39 and 40, Fig. 6, and 4|, Fig. 7, the zones being indiivdually supplied with oil through respective supply lines 52, see Fig. 5. This tends to stabilize burner action.

Whereas this invention is here illustrated and described with respect to preferred specific embodiments thereof, it should be understood that various changes may bemade within the scope of the following claims.

What is claimed is:

1. An oil burner, comprising a trough surroundmg and defining an air-supply opening, said trough having its outer wall of greater height than its inner wall and being adapted to contain: a body of oil with a broad vaporizing surface; acover for said trough and air-supply opening, said cover having a deflector depending substantially centrally from its underside into said opening for directing air outwardly toward said! trough; a multitude of heat-radiating fins depending from the underside of said cover in substantially radial arrangement between said defiector and the rim of said cover and defining a plurality of laterally-directed and substantially unobstructed fiow channels, at least part of said multitude of fins seating upon the inner wall of the trough to support said cover and to determine a laterally-directed, peripheral burner gap between the peripheral margin of said cover and. the outer wall of the trough, said fins having the major portion of their vertical depths depending into said trough below the rim of the outer wall thereof, so that said flow-channels are disposed to a major extent within the trough and below the said rim of the outer wall thereof, terminating within the trough and having their discharge openings directed laterally toward said burner gap below the overhanging peripheral margin of said cover.

2. An oil burner, comprising an annular trough for containing a body of oil with a broad vaporizing surface, the outer wall of said trough being of greater height than the inner wall which defines an air-supply opening; a circular cover for said trough and air-supply opening, said cover having a deflector'depending centrally from its underside into the said opening for directing air outwardly toward the trough; a multitude of curved, heat-radiating fins depending from the underside of said cover and arranged radially between the said deflector and the rim of the cover, and defining a plurality of laterally-directed and substantially unobstructed flow channels, said fins being alternately long and short, the long fins having greater depth than the short fins and being arranged to seat upon the said inner wall of the trough to support the cover and to determine a laterally-directed peripheral burner gap between the peripheral margin of said cover and the outer wall of the trough and the short fins hanging freely within the trough, said fins having the major portion of their vertical depths depending into said trough below the rim of the outer wall thereof, so that said flowchannels are disposed to a major extent within the trough and below the said rim of the outer wall thereof, terminating within the trough and having their discharge openings directed laterally toward said burner gap below the overhanging peripheral margin of said cover.

3. An oil burner, comprising a trough rectangularly surrounding and defining an air-supply opening, said trough having its outer wall of greater height than its inner wall and being adapted to contain a body of oil with a broad vaporizing surface; a substantially rectangular cover for said trough and air-supply opening, said cover having an elongate deflector depending substantially centrally from its undersideinto said opening for directing air outwardly toward said trough; a multitude of heat-radiating fins depending from the underside of said cover in substantially radial arrangement between said deflector and the rim of said cover and defining a plurality of laterally-directed and substantially unobstructed flow channels, said fins seating upon the inner wall of the trough to support said cover and to determine a laterally-directed. peripheral burner gap between the peripheral margin of said cover and the outer wall of the trough, said fins having the major portion of their vertical depths depending into said trough below the rim of, the

outer wall thereof, so that said flow-channels are disposed t9 a major extent within the trough and 5 below the said rim of the outer wall thereof, terminating within the trough and having their discharge openings directed laterally toward said burner gap below the overhanging peripheral margin of said cover.

4. An oil burner as defined in claim 3, wherein the fins of equal depth so the cover may be shifted to vary the character of the peripheral burner gap.

5. An oil burner as defined in claim 3, wherein the fins at opposite ends of the cover are curved, while the fins intermediate the said ends are straight.

JOHN O. HORBETZ.

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

Number Number 6 UNITED STATES PATENTS Name Date Tucker Apr. 12, 1904 Turner Dec. 19, 1922 Staples June 23, 1925 Hackforcl Mar. 25, 1930 Roberts Feb. 3, 1931 Hill Nov. 27, 1934 FOREIGN PATENTS Country Date Great Britain Nov. 21, 1929

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