US2309762A

US2309762A - Hydrocarbon burner

Info

Publication number: US2309762A
Application number: US318769A
Authority: US
Inventors: Glenn D Gearhart
Original assignee: ALFRED ACCOLA
Current assignee: ALFRED ACCOLA
Priority date: 1940-02-13
Filing date: 1940-02-13
Publication date: 1943-02-02
Anticipated expiration: 1960-02-02

Description

Feb. 2, 1943. p, GEA'RHART 2,309,762

I HYDROCARBON BURNER I Filed Feb. 13, 1940 Patented Feb. 2, 1943 HYDROCARBON BURNER Glenn D. Gearliart, Washington, D. 0., assignor of one-fifth to Alfred Accola, Slater, Iowa Application February 13, 1940, Serial No. 318,769

2 Claims.

This invention relates to a hydrocarbon burner, and it is primarily an object of the invention to provide a burner of this kind which will function with rapid combustion without the use of chimney draft.

It is also an object of the invention to provide a burner of this kind which is so designed as to substantially eliminate formation of carbon deposits so that the burner will at all times maintain a high state of efiiciency.

Another object of the invention is to provide a burner of this kind wherein fluid, such as air, is employed under pressure for breaking up the liquid fuel and carrying the same into the burner head for vaporization.

The invention has for an additional object to provide means whereby provision is made for preheated auxiliary air to intermingle with the charge so that the charge is dry and in the highest state of efficiency.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved bydrocarbon burner whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawing, wherein:

Figure 1 is a vertical sectional view with parts in elevation illustrating a hydrocarbon burner constructed in accordance with an embodiment of my invention;

Figure 2 is a fragmentary sectional View taken substantially on the line 2'--? of Figure 1 looking in the direction of the arrows.

As disclosed in the accompanying drawing, P denotes a supporting plate which is adapted to be mounted upon the grate or other holding means within the fire box of a stove, said plate being of any suitable contour, either circular or rectangular as may be necessary to suit the conditions under which the burner is used and, when in working position, sufficiently elevated with respect to the grate or holding means to permit the desired placement of the burner.

The central portion of the plate P is provided with a relatively large opening I and overlying the outer portion of this opening I is a continuous annular plate 2 defining a second relatively large opening 3 but, of course, of a diameter materially less than the diameter of the opening I This continuous plate 2 has its outer marginal portion slightly overlying the portion of the plate P immediately adjacent to the opening I and said plate 2 is provided with a depending rib 4 which snugly engages within the opening I whereby the plate 2 is properly maintained in desired working position.

As is clearly illustrated in the accompanying drawing, the major portion of this plate 2 is within the field of the opening I and carried by this plate 2 at points preferably equi-distantly spaced therearound are the upstanding air lines 5. In the present embodiment of the invention these flues 5 are shown as being integral with the plate 2 although I do not wish to be understood as limiting myself in that respect. These fiues 5 each has a relatively large bore which extends through the plate 2 for communication with the portion of the stove below the applied plate 2 for a purpose to be hereinafter more particularly referred to.

A plate 6 is disposed over the opening 3 defined by the plate 2 and the marginal portion of this plate 6 partially overlies the plate 2 whereby the plate 6 is supported in position. To maintain this plate 2 in its effective position the same is provided with a depending rib 1 which snugly engages within the opening 3. The plate 6 inwardly of but in close proximity to its margin is provided with an upstanding flange 8 whereby such plate 6 may serve as a cup-like member to collect any excess flow of oil as will hereinafter be clearly understood. This plate 6 has leading therefrom to a suitable point of discharge a drain pipe 9 of required diameter.

The central portion of the plate 6 is formed to provide a depending block In with its upper face provided with a concave depresison l I which forms a basin as shown. This concave depression H at its axial center is further recessed to provide a well 01 sump l2. Formed through the block H] is a port It which opens through the center of the bottom of the well or sump l2 and which is adapted to be placed in communication with a suitable source of air under pressure. Also formed through the block [0 is a second or oil port l5 which discharges within the well or sump l2 at a point slightly above but in close proximity to the point of discharge of the air port H. The discharge portion of the port 14 is of a diameter materially less than the diameter of the discharge end of the port I5. It is of importance to have the discharge portion of the port I4 restricted to assure the discharge of an air stream under proper velocity.

It is also important that the air port I4 be vertically disposed when the unit is in operation and that the outlet end of this port be in a plane perpendicular to the port so that the fuel oil entering the well or sump I2 from the port I5 will gravitate to the outlet of the port I4 and flow evenly around the edge thereof. It is essential in the operation of the device that the oil be distributed evenly around the outlet end of the port I4 in order that the proper combustion of the oil may be obtained. For this reason it is important that the air passage be vertical and that the end edge be perpendicular thereto.

Supported upon the plate 6 by the legs I6 depending therefrom is a sleeve IT. The lower end of this sleeve I! has its bore outwardly tapered, as at I8. The legs I6 may be of any desired number but adjacent legs must, of course, be spaced apart a distance sufficient to permit the ready passage therebetween of auxiliary air,

The upper end of the sleeve I! is defined by an outstanding and perpendicularly related surrounding flange I9 terminating in an upstanding flange adjacent to the outer margin thereof. This flange 2i! has its top face a disposed on an inward and downward bevel. The flange 20 defines a chamber in which is snugly received a spacing member 2| which has its periphery so constructed and arranged to provide a plurality of circumferentially spaced lugs 22. ing member 2| has a central opening 2I substantially in continuation of the adjacent extremity of the bore of the sleeve IT. The lugs 22 are substantially coplanar one with the other and with the member 2|. The lugs 22 are continued by the upstanding fingers 23 of desired length and which are received within a rabbet 24 surrounding the entrance opening 25 at the lower end of the mixing chamber C. This chamber C is herein disclosed as substantially spherical in form although I do not wish to be understood as limiting myself to this particular shape.

It is also to be pointed out that the fingers 23 are of such length as to separate from the upper edge face a of the flange 20 the lower edge face I) of a flange 26 depending from the mixing chamber C and surrounding the entrance opening 25 thereof. This space 0 between the faces a and 1) provides a continuous and uninterrupted slot through which the combustible gas is discharged :1-

for creating the desired flame. As illustrated in the accompanying drawing, the edge face I) of the flange 26 is preferably on a bevel complemental to the bevel of the edge face a of the flange 20. It is further to be pointed out that the under surface 21 of the mixing chamber C immediately adjacent to and surrounding the flange 26 is on such an angle to assure effective spreading of the flame.

The connection of the oil port I5 with its source of supply is such as to provide a slow discharge of the oil through the port I5 into the weil or sump I2. The pressure of the air as discharged through the port I4 will be dependent upon the amount of oil passing from the discharge end of the port I5. As the ail-stream passes through the orifice of the port I4 it trikes the oil flowing thereto and said stream will carry the oil up through the sleeve I'l into the mixing chamber C where it will be gasifled and then This spac- 1 pass out through the continuous surrounding slot 0. This gas will readily pass between the fingers 23. Of course, in the initial starting of the burner it is necessary to pre-heat the chamber C, or more particularly the wall thereof, and this can be done by allowing a certain amount of oil to flow through the port I4 and overflow the basin II upon the top surface of the plate 6. This initial oil can be ignited in any manner desired.

The flow of the mixture up from the ports I4 and I5 within the chamber C and then out through the slot 0 will result in a down draft from the upper ends of the flues 5 and between the supporting legs I6 and up through the sleeve I1. In this circulation of this auxiliary air the same will be pre-heated thus assuring a superheating of the mixture as it passes up through the sleeve II into the chamber C. This is of importance as such pre-heating results in expan sion of the mixture which increases the combustibility of the gas. It is believed to be obvious that the air passing up through the flues 5 also serves to support the combustion for the gases to assure the proper flame.

This drawing of a portion of the auxiliary air into and up through the sleeve I7 is the result of the action of the air stream, which is under pressure, passing upwardly from the port I4 through the sleeve I1. It is also to be pointed out that the flame at the slot 0 is directed over and closely adjacent to the upper ends of the flues 5. This is of particular importance and advantage as by this arrangement of the flame the up draft for the auxiliary air is created through these flues 5.

This application is partly in continuation of my applicatoin Serial No. 111,713, filed November 19, 1936.

From the foregoing description it is thought to be obvious that a hydrocarbon burner constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

1. A hydrocarbon burner, comprising a .base member having a depressed top surface forming a basin, said basin having a sump formed at its center, the base having two passages formed therethrough, one of which constitutes a fuel supply means and opens into the basin at the side of the sump, the other passage constituting an air supply means and extending vertically through the member and opening through the bottom of the sump at the lowest part thereof, and said air passage at its outlet being restricted to deliver air in the form of a blast, a mixing chamber supported above and spaced from the basin, a sleeve mounted upon the base member with the lower end thereof spaced from the base member, and a spacing member interposed between the sleeve and the mixing chamber, said spacing member having a plurality of circumferentially spaced fingers, said flngers supporting the mixing chamber with the lower end thereof spaced from the adjacent portion of the sleeve whereby a flame slot is provided, said spacing said air passage at its outlet being restricted to deliver air in the form of a blast, a sleeve supported above the base member and spaced therefrom, a mixing chamber, means for supporting the mixing chamber above the sleeve with the mixing chamber spaced from the sleeve to provide a flame slot, and upstanding flues for auxiliary air positioned around the sleeve outwardly of the slot, the upper ends of said fiues terminating below but in close proximity to the flame slot.

GLENN D. GEARHART.