US2476709A - Annular trough oil burner - Google Patents

Description

JURY 19, 194-9. w, DOCKERY 2,476,709

, ANNULAR THOUGH OIL BURNER Filed Sept. 7, 1946 2 Shegts-Sheet l "IIYIIIIIVIIIIIIIIIII July 19, 1949; N. w. DOCKERY 2,476,709

ANNULAR TROUGH OIL BURNER Filed Sept. 7, 1946 2 Sheets-Sheet 2 M'clwfaa Dockery.

Patented July 19, 1949 TRQUGH 01L BURNER .Nicholasw.Dockery,1tockingham,N.G.,assignor to Dockery Laboratories 00., Rocklng'ham, N, Q,

vikmilicaiiioui September 7, 1946,'Seria1 No. $95,405

'3 Claims. 1

This invention relates to :a novel heater of the type especially adapted use in heating a tobacco curing barn, said Heater including a casing afiording a combustion chamber and having at least one side outlet nipple for the exit of products of combustion and a bottom air inlet opening, and a multiple oil burner mounted in said opening, the outlet nipple being adapted for connection with a heating pipe trained about the interior of the barn and extended to a stack so that the hot products of combustion :fiowing' through the heating pipe cause heating ozf the barn.

An object of the invention is to provide a simple and efficient heaterof theabove kind in which novel provision is made to mount the burner within the bottom airin'let opening of the casing.

A further object is to provide, in a heater of the above kind, a simple, efilcient and economical oil burner which can be easily and quickly installed in the casing.

Another object is to provide an efficient multiple oil burner of the above kind including a plurality of spaced concentric annular burner sections, each section embodying an annular oil trough and an oil vaporizing ring disposed within said trough, the edges of the troughs being rounded so that the air passing upwardly about the outer section, between the adjacent sections and within the inner section will curl around said edges to efiectively mix with the films of oil issuing from the burner sections between the troughs and vaporizing rings thereof and thereby insure substantially complete combustion.

Other objects and features of the invention will become apparent from the following description when considered in connection with the accompanying drawings, in which:

Figure 1 is a central vertical sectional view of a heater constructed in accordance with the present invention, partly broken away.

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

Figure 3 is an enlarged fragmentary section through the burner, taken on line 3-3 of Figure 2, and

Figure 4 is an edge elevational view of the burner.

Referring in detail to the drawings, 5 indicates a rectangular casing which affords a combustion chamber 6 and which has at least one side outlet nipple 1 for the exit of products of combustion. Formed in the bottom wall of casing 5 is a relatively large central air inlet 'ngv '8, the

casing 5 has a .remnvable cover or lid :9.

nimaltiple burner MI is mountedwithinthe opening d. In practice, the sidekontlet or nipples '1 is or are with a heating "pipe or trained abontthe :inteni rof a tobacco curing barn and extended to a stack sci-hat the hot products of combustion ifiowingtlnzough the heating pipe or pipes cause heating of the :barn.

burner ill incluilssaplmiality of spaced concentric burner seutitms a, b c, and each section embodies an annular trough ii and an .oil ygring l1 disposed within said trough: H of the burner-sections are .ziohaed integrally by webs, 43., and arespaoed apartas at M to provide a :free air supply between the burner. sections. Airis also supplied through "the central opening .45 of the inner burner section and between the wall of opening 8 and the outer burner section, said opening 8 being of slightly greater diameter than the burner II]. A bored oil passage l6 which extends through the webs l3, affords communication between the bottoms of the several troughs II, and oil is supplied to the troughs of the several burners through this passage and from an oil supply pipe l'l connected to the passage It at the outside of the outer burner section. Integrally formed on and at the top of the outer wall of the trough ll of the outer burner section, are horizontal projecting lugs l8 having vertical screws l9 adjustably threaded therethrough. The screws [9 rest upon the bottom of the casing 5 in surrounding relation to the opening 8 so as to support the burner within said opening in spaced concentric relation to the wall of the latter. By vertically adjusting the screws IS, the burner may be levelled and supported at the desired height with respect to the bottom wall of casing 5. The vaporizing rings I2 are of slightly less depth and width than the troughs H and are centered within the latter by means of supporting lugs or ribs 20 integrally formed at circumferentially spaced points on the outer sides of the vaporizing rings 12. Thus, a narrow space is left between each side of each vaporizing ring and the adjacent side of the associated trough H so that the oil supplied to the troughs will issue therefrom through the spaces 2| in thin arcuate films. The upper edges of the troughs II are rounded as at 22 so that the air passing upwardly about the outer burner section, between adjacent burner sections, and within the inner burner section will curl around said edges to effectively mix with the films of oil issuing from the burner sections, and thereby insure complete combustion. The upper faces of the vaporizing rings are preferably slightly concave as at 23 to form shallow wells for reception of any excess oil that may be supplied to the troughs and which may be ignited in said wells by the flames at opposite sides thereof and above the spaces 2|. In practice, the vaporizing rings will assume a positionslightly below the upper edges of the troughs to insure passage of the excess oil into the wells 23. The troughs I I are preferably of V-shape in cross-section, and

the rings I2 are of substantially triangular shape in cross-section, as shown. This causes the films of oil to issue from the spaces'zl in upwardly diverging relation so that the flames from the several burners will intersect and cause a swirling action calculated to promote complete combustion. To aid in turning or handling the vaporizing rings I2, each is preferably provided with a upwardly projecting lug 26; l a,

From the foregoing. description, it is believed that the construction, operation and advantages of the present invention will be readily understood and appreciated by those skilled in the art. Minor changes indetailsiof construction are contemplated, such as. fall within the scope of the invention as claimed. 1

WhatIclaim is: i 1. In a heater, a multiple oil burner comprising a plurality of spaced concentric burner sections of continuous form, each section embodying a continuous oil trough of substantially V-shape in cross-section and an oil vaporizing ring of substantially triangular shape in cross-section disposed within said trough, spacing lugs on corresponding sides of the-vaporizing rings for positioning the latter inslightly spaced relation the tops of the vaporizing rings are located slightly below the upper edges of the troughs, said vaporizing rings having concave upper faces to provide shallow excess oil receiving wells.

3. The construction defined in claim 1, wherein the troughs are provided with rounded upper edges so that air passing upwardly between them will curl around said edges for effectively mixing with oil films issuing from the burner sections between the troughs and vaporizing rings thereof.

NICHOLAS W. DOCKERY.

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

UNITED STATES PATENTS Number 7 Name I Date 1,039,194 Raymond et a1. Sept. 24, 1912 1,441,008 Lovett Jan. 2, 1923 1,443,063 Wednfine et'al. Jan. 23, 1923 1,559,939 Dahl Nov. 3,1925 1,855,758 Hill et 21.1. Apr. 26, 1932 1,933,044 Cannon Oct. 31,1933 2,021,810 Ruttiman Nov. 19, 1935 2,268,857 Dooley Jan. 6, 1942 2,399,589 Whitener Apr. 30, 1946

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