US2244178A

US2244178A - Oil burner

Info

Publication number: US2244178A
Application number: US193142A
Authority: US
Inventors: Senior Alfred Irvine; Mcnabb Maxwell
Original assignee: SIRONE Co Ltd
Current assignee: SIRONE Co Ltd
Priority date: 1937-03-25
Filing date: 1938-02-28
Publication date: 1941-06-03
Anticipated expiration: 1958-06-03

Description

June 3, 1941. A. I. SENIOR ETA-L 2,244,178

' OIL BURNER Filed Feb. 28. 1938 \NVENTORS ALFRED IRVINE SENIOR MAXWELL Mc NABB BY \{MATTYS Patented June 3, 1941 OlIL BURNER Alfred Irvine Senior and Maxwell McNabb, Motueka, Nelson, New Zealand, assignors to The Sirone Company Limited, Motueka, Nelson, New

Zealand Application February 28, 1938, Serial No. 193,142 In New Zealand March 25, 1937 4 Claims.

This invention has reference 'to burner appa- Y ratus designed for use with oil fields and capable of beingemployed in a large "number of circumstances in which enclosed spaces require to be heated, and particularly in such circumstances as are concerned with the heating of domestic cooking ranges or stoves, the heating of drying chambers, and in such like applications.

The invention is concerned with a manner of construction by which a burner apparatus is produced which in its operation provides for the oil fuel being fed to a burner pot contained within a combustion chamber into which the air necessary to effect the vaporization and combustion of the oil is led by induction and inwhich the-'prodnets of combustion as they passjfrom the com-' bustion chamber intothe sphere to beheated, are

caused to be mingled withfa fulfthe heated air, to thus increa efliciency.

The accompanyingjidrawing ,illustrated the manner of giving effect tothe invention.

In such drawing-P 1 Figurel is a plan. being'shown in section. 5 I g Figure 2 is a front end elevation thereof. Figure 3 is a longitudinal sectional view therehe .bu

rner,- the casing of. I

Figure 4 is a cross sectional view-taken on the line 44 of Figure 3 and looking to the left of such line.

Figure 5 is a rear end elevation.

Figure 6 is a rear end elevation of the burner chamber with the casing shown in section around it.

In this construction the burner combination comprises a hollow cylindrical combustion'cham ber i2 which has its inner end open and arranged to enter the sphere or enclosure through which the heat is to be conveyed and in which a draught is induced in any suitable manner, to act upon theair supply to the burner. This chamber may be made to increase in its diameter from its outer to its inner end. Near such inner end the chamber is formed with an annular enlargement or flange l3 extending out for an approved distance and such flange is formed with a number of air holes I I. These air holes are disposed at approved intervals apart all round the outside of the chamber and are made of any approved shape and size. There may be associated with the flange and its air holes, a register plate ring l5 mounted on the chamber with its face against the outside of the flange and adapted by being moved round the burner to more or less through the openin ill cover the air holes and thus to regulate the area of the passages through them. This register plate is shown in dotted lines in Figures 1 and 3.

The chamber I2 is formed in its top, at about midway in its length, with an air entry opening l6 which is shaped of the triangular form shown .and extends. laterally in the periphery of the chamber and. also has its two sides made to taper inwardly. asshown. This formation is designed to provide" that an .current drawn down ave an agitation, or swirling action;. imparted to"it, -to impinge on the lower part of the; chamber wherein the burner pot -11 is fitted. This pot is formed as a tray aflixed to'a stem'piece i 8 screwing up through the bottom of the chamber 42 so that the pot may be held in an elevated position providing for the free circulation of air above and below and all round it and may also be adjusted in its level. The tray is charged with a pad IQ of an absorbent non-combustible material, such as asbestos, in

' order that oil delivered into the pot will be absorbed and its'combustion thus aided. Provision is made for the draining away of any excess oil overflowing from the burner pot, such provision consisting in the small drain holes 20 formed in the chamber bottom around the stem.

A second hole 2| is formed in the top of the chamber l2, upon the inner side of the air opening l6, and through this hole 2! the oil fuel supply pipe 22 is led down to deliver the fuel to the burner pot H. In some cases, however, the pipe 22 may be led in through the air opening IS.

The outer end 01' the chamber is open to permit of access for attention thereto and to the burner pot, but such end is provided with a removable cover plate 23 which is made to .extend up to close the opening with the exception of a small space at the top.

Combining with the burner chamber 12 is the outer casing 25, which is made of light nietalas compared with that of the chamber. This casing is of cylindrical form and is made to flt over the outer end of the chamber 12 and has its forward end attached in any approved manner to the flange I3 as by means of screws passing through it into the flange. The casing is made of a diameter such as to leave a clear annular space between it and the chamber l2, into which the air entry opening l6 of that chamber opens and which at its inner end connects with the air holes ll in the flange. Distance pins 40 (Figures 3, 4 and "6) may be screwed radially outward through the burner rear end to maintain the casing in its true concentric position on the burner chamber. Provision is made for the free entry of air into this casing through the inductive force acting inthe burner chamber, and such provision consists in the formation of the casing with an air opening 26 at its rear end. The said air opening 26 provided in the casing is made of a nature such that its area may be readily controlled and for this purpose a flap hood 28 is hinged along the top of the opening so that it may be swung in or out to uncover the opening less or more-in accordance with the air feed required and the consequent combustion of the fuel.

The air thus drawn into the casing feeds the burner pot IL through the opening It, to cause the combustion of the oil fuel while it also passes along the annular space in contact with the wall of the chamber l2 so that it is heated and tends to keep the chamber cool, and issues through the holes H in a series of Jets to mingle with the products of combustion as they issue from the inner end of the burner chamber.

It is preferred, also, in respect of this apparatus that additional air may be drawn in by induction to mingle with the air passing through the aperture l4 before such is caused to join the combustion products issuing from the burner mouth. To provide for this a plate i3 is atflxed to the inside of the flange I3 at a short distance away therefrom and this plate is so made as to leave an opening l3 through it immediately surrounding the burner chamber outlet. The air thus passing through the passages I! will pass through this opening I3 and will, by induction, cause a flow of air in through the space bet ween the flange l3 and plate I3 and this air will pass also through the opening l3". The additional air will serve to keep the outside of the burner cool and will itself be warmed by its contact with the burner. The plate 13 may suitably be the front plate of the furnace, or other appa-. ratus, with which the burner is combined in its use.

Water vapour for mixture with the air and to increase the heat production, is provided for by means of a water well 30 positioned inside the casing and fed with water through a pipe 3!. Such well may be secured upon the casing bottom, as in Figures 3 and 6. The heat radiating from the burner chamber will vapourize the water so that its vapour will mingle with the air passing through the casing.

An inspection opening 32 is formed in the casing top and this has a cover 33. A drain pipe 34 for leading ofl. any moisture collecting in the casing opens from the casing. bottom.

We claim: 1

1. An oil fuel burner comprising, in combination, a horizontal cylindrical burner chamber open at its inner end and formed with an air entry opening in its top at about midway its length and with an annular flange extending out from near its inner end and being provided with a number of apertures through it at circumferentially spaced intervals, a burner pot fitted in the chamber beneath the said entry opening, an oil feed pipe leading downwardly into such pot, and a cylindrical casing enclosing the outer end and the wall of the burner chamber disposed to leave a clear annular space between them and to flt at its inner end around the said annular flange, and which casing is formed with an air entry opening at its outer end.

2. An oil fuel burner according to claim 1, in which the said annular flange has combined therewith an annular plate attached to its inner side at a distance therefrom, said annular plate surrounding the inner end of the burner chamber in a manner such as to leave an opening between them.

3. An oil fuel burner combination according to claim 1, in which the outer end of the burner chamber is formed with an air opening at its top.

4. An oil fuel burner combination according to claim 1, in which the burner pot is formed by a tray containing a pad of absorbent non-combustible material and mounted upon a. stem piece which is screwed vertically through the bottom of the burner chamber.

ALFRED IRVINE SENIOR. MAXWELL McNABB.