US2392757A - Burner - Google Patents

Description

Jan. 8, 1946. J. w. MILLER 2,392,757

BURNER v Filed Jan. 7, 1943 2 Sheets-Sheet 1 I x 2 m 2%? INVENTOR. JOHN W. MILLER BY W/mdm Jan; s, 1946. WLL R 4 2,392,757

\ BURNER Filed Jan. 7, 1943 2 Sheets-Sheet 2 INVENTOR. JOHN W MILLER My/K1412,

Patented Jam s, 1946 BURNER John W. Miller, Lansing, Mich., assignor to Motor Wheel Corporation, Lansing, Mich., a corporation of Michigan Application January 7, 1943, Serial No. 471,542

' 8 Claims.

This invention relates to burners and more particularly to burners of the vaporizing pot type.

The principal object of this invention is the provision of a burner from which the products of combustion (including flame) are discharged in a non-vertical direction, as for example, in a horizontal direction. While such a burner has long been desired and various attempts have been made to produce such a burner, all those which have been heretofore made or suggested have involved nothing more than disposing a conventional vertical type of pot burner in a horizontal position. These have not been entirely satisfactory for various reasons including an inability to obtain a satisfactory premixing of the air and oil vapor in advance of combustion.

I have discovered that this and other disadvantages of the prior horizontal burners can be overcome by constructing a burner with the lower part of substantially conventional vertical form and with the upper part turned or bent to a horizontal or any intermediate position. Forbest results, I have found that certain changes in the size, number and/or disposition of the air inlet openings as compared with the conventional vertical typeare desirable. When such changes are made, the burner of this invention is free from the disadvantages of prior horizontal type burners and is otherwise fully as good and efficient as the conventional vertical type of burner.

For a fuller understanding of the objects, advantages and scope of the invention, reference should now be had to the following description when read in connection with the accompanying drawings, wherein;

Figure 1 is a vertical sectional view of a burner embodying the present invention;

Figure 2 is a side elevational view of the burner shown in Figure 1;

Figure 3 is an end elevational view of the burner shown in Figure 1;

Figure 4 is a top plan view of the burner shown in Figure 1; and

Figure 5 is a perspective view of the burner pot forming a portion of the complete burner shown in the other figures.

The burner herein shown comprises an outer casing B sealed from the atmosphere except for the large air intake opening 9 in one side thereof and a discharge opening Win the end wall II. Disposed within the casing 8 is the burner proper I2. in the form of a right angle elbow of substantially uniform cross-sectional area; an imperforate bottom wall It joined to one end of the side wall I3 in sealed relation therewith; and a wall I5 Burner I2 comprises; a tubular side wall I3 partially closing the other end of the side wall and joining the side wall to the casing. The

wall I 5 is connected to burner side wall I3. and to I5. Burner end wall I5 is of pan shape having a tubular side wall I 5a and a rim portion I5b which is connected to casing end wall II as shown. A sleeve construction is associated with the opening I0 of casing end wall I I comprising a pair of rings I1 and I8 secured to each other in slidable telescopic relation and extending on both sides of casing wall II andbeing secured to the outer surface thereof by means of a flange carried by ring l8. Ring I7 is axially aligned with and substantially larger than sleeve I6, the inner end thereof preferably being spaced from burner end wall I5 as shown for a purpose to be described more fully hereinafter.

Referring now particularly to Figures 1 and 5,

the burner pot is shown as divided into two-sections by a number of imaginary planes represented by the dotted line I9 extending along the longitudinal axis of the burner pot. Due to the formation of the side wall, it will be understood that the upper section of the tubular burner pot is of a substantially greater volume than the lower section. This division ofthe burner pot into sections is referred to herein because it has been found advantageous, .even though not necessarily essential, to provide the upper section with primary air inlet openings 20 of different quantity, size and/or location than the primary air inlet openings 2| in the lower and smaller section.

For example, in a burner comprising a tubular side wall I3 of a. substantially uniform internal cross-sectional area and having a diameter of approximately eight inches, the'disposition of the air inlet openings may be as shown in Figure 1 with the number and size of openings in the two sections as follows:

This arrangement results in the upper section 2 aseavor having a total wall area of 191.6 square inches and provided with 88 primary air inlet openings of a total area of .50822 square inch; and the lowersection having a total wall area of 108.1

square inches provided with 70 primary air inlet openings of a total area of .75659 square inch.

Secondary air is supplied to the burner outside of end wall it through a series of secondary air inlet openings 22 formed in the side flange a of, end wall It. secondary air inlet openings 22 are preferably larger than the primary air inlet openings 2i? and 2| and relatively more concentrated as shown. It will be observed that the arrangement of walls 55 and II together with ring i'l form a sort of expansion chamber for the reception of air from openings 22 whereby its velocity is reduced prior to entering ring ll adjaby sleeve l6.

Bottom wall ll of burner I2 is formed to receive liquid fuel (oil) from a supply pipe 23 in a well or depression 24. The supply of fuel to the burner from a source not shown is regulated by a conventional regulating valve 25. It will be observed that well 24 is located substantially centrally of the larger or upper section of the burner pot, thus placing the fuel inlet 180 degrees from the burner outlet. This arrangement has been found to be advantageous.

Provision is made for manually igniting the fuel delivered to the bottom of the burner through means of a lighter tube 28. In order to prevent any leakage of air into the burner l2 through the lighter tube 2B.'the upper end thereof is pro vided with a hinged closure 21 adapted to seal the interior of the tube from the atmosphere.

In use the burner of this application will nor-' mally be associated with a conventional combustion chamber connected to a chimney or other draft producing device in the usual manner. Air may be supplied to the burner by means of natural draft or by means of a draft producer, such as a blower. associated with the air inlet opening 9 in the side wall of casing 8. In either case, air

It has also been found desirable to have the burner outlet opening so disposed in relation to the imperforate bottom wall it that flame located at the outlet opening can "see" at least a portion of the bottom wall surface. This arrangement is believed to facilitate the generation of fuel vapors.

As used in the claims of this application: the

term "tubular is not limited to a cylindrical section but is intended to define other sections such as square, oval, polygonal, etc.; and the terms "circumference and circumferential define the perimeter and perimetrical dimension of all such sections.

By the expression "outer one half of the circumference" as usedin the claims in connection with the burner side wall is meant that portion of the side wall which is disposed above and to the left of the series of imaginary planes defined 'by dotted line H in Figure 5; and the expression "inner one half of the circumference" as used in the claims in connection with the burner side wall means that portion of the side wall which lies below and to the right of the series of imaginary planes defined by the dotted line [9 in Figure 5.

The scope of the invention is indicated in the appended claims.

I claim:

1. A burner of the vaporizing pot type comprising a bottom wall adapted to serve as a fuel receptacle, a tubular side wall connected to the bottom wall and extending upwardly and laterally therefrom, the end of said tubular wall remote from the bottom wall being provided with adischarge opening disposed above and laterally of the central portion of the bottom wall, the axis of the end of the tubular wall remote from the bottom wall forming an angle of substantially less than 180 with the axis of the end of the tubular wall adjacent the bottom wall, said tubular wall being provided with a plurality of air inlet openings distributed substantially throughout its circumferential and longitudinal extents, the total area of the air inlet openings in that portionof the tubular wall comprising the outer one half of the circumference thereof being less than the addition to the primary air' opening arrangement previously referred to, it is desirable to locate the discharge opening of the burner eccentrically of the outlet end thereof as shown. That is to say, the discharge opening defined by sleeve i6 is preferably positioned above center with a major portion located within the upper section. The use of the sleeve l8 and the specific location of the fuel well 24 are also determined in part by this consideration.

total area of the air inlet openings in that portion of the tubular wall comprising the inner one half of the circumference thereof.

- 2. A burner as defined in claim 1 wherein fuel is admitted to the burner adjacent the junction of the bottom wall with the portion of the side wall comprising the outer one half of the circumposed within the section of the burner defined by the portion of the side wall comprising the outer one half of the circumference thereof.

6. A burner of the vaporizing pot type compris ing a bottom wall adapted to serve as a fuel'rece'ptacle, a tubular side wall connected to the bottom wall and extending upwardly and laterally therefrom, the end of said tubular side wall remote from thebottom wall being provided. with a'" discharge-opening disposed above and laterally of the central portion of the bottom wall, said tubular wall being provided with a plurality of air inlet openings distributed substantially throughout its circumferential and longitudinal extents, the average area of the air inlet openings in the portion of the side wall comprising an outer one half of the circumference thereof being less and the total number of air inlet openings being greater than in the portion of the side wall comprisingthe inner one half of the circumference thereof.

7. A burner of the vaporizing pot type comprising a circumferentially and longitudinally continuous substantially tubular side wall of substantially uniform cross-sectional area, said wall being provided with a plurality of circumferentially and longitudinally spaced primary air inlet openings disposed throughout substantially the entire extent of the side wall. an imperforate bottom wall joined to one end oi. the side wall and adapted to serve as a fuel receptacle, the axis of the, end of the tubular side wall remote from the .bottom wall forming an angle of substantially less than 180 with the axis of the end of the tubular wall adjacent the bottom wall, the end of the tubular wall remote from the bottom wall having a discharge opening disposed above and laterally of the central portion of the bottom wall, the portion of the burner defining the perimeter'of the discharge opening-lying generally in a plane which intersects the plane of the bottom wall, and means for delivering fuel to the JOHN W. MILLER.

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