US2443575A - Burner head for boilers - Google Patents

Description

June 15, 1948. G. 1. CARTER 2,443,575

BURNER HEAD FOR BOILERS Original Filed April 25, 1945 Patented June 15, 1948 BURNER HEAD FOR BOILERS George Irving Carter, Longmeadow, Mass, as-

signor to Harvey -Whipple Incorporated,

Springfield, Mass, a corporation of Massachusetts Original application April 23, 1943, Serial No. 484,281. Dividedand this application May .24, 1944, Serial No. 537,103

2 Claims.

This invention relates to heating apparatus and is directed more particularly to improvements in burner heads for boilers.

This application is a division of an applicationfiled by me on April 23, 1943, Serial Number 484,281, now Patent 2,370,145, February 27, 1945.

The principal object of the invention is the provision of a burner head construction which, by reason of its simplicity and novel arrangement, is 'not only economical to produce but is characterized by its economy and efficiency in operation.

Variousnovel features of construction and the advantages thereof will be observedfrom the'following "description of thepresent preferred form of the invention shown in the accompanying drawings wherein:

Fig. '1 is a longitudinal sectional view throu h a 'boiler'embodying the novel features of the invention;

'Fig. 2 is a'front end elevational View of the lower part of the boiler shown in Fig. 1;

Fig. 3 is a side elevational view of the head construction for the combustion chamber ofthe boiler.

Referring now to the drawings more in detail, the invention will be fully described and it will be understood that various changes and modifications may be made all withinthe scope ofthe invention.

Upper and lower tubular sections 2 and 14 of metal have their adjacent longitudinal sides cut away withtheir side walls joinedtogether as by welding or'thelike so as to provide the sidewalls of a casing which is more orless in the form of a figure 8.

The opposite ends of the casing are closed by end plates 6 and "8 which are suitably secured to the casing side walls as by welding so as to provide a closed vessel.

Relatively concentric cylinders l and I2 disposed within the upper tubular member 2 are secured-atrtheir forward ends to the front end wall 8 as'by welding and they-terminate at a distance from therrearvend wall so as to provide a space M. A'cylinderor tubular memberla is disposed within'thelower member-4 and has its forward end secured to the front wall 8 while its rear end as -with members to and I2 is spaced from wall 6, as shown.

An inner rear -wall or walls 22 is secured to the rear ends of'the cylinders-lm'lz'and l6 as'by welding 'so' as to closeoff the annularspace 24 between cylinders l0 and I2 as well as the cylinder 16- at the rear'ends thereof leaving cylinder f'2-open and in communication "with space H. A hollow connection 26 is connected to and extends between cylinders Ill and I6 so as to bring a combustion chamber 30 within member l6 into direct communication with the annular space 24. A

hollow connection or connections such as '28 extends between and through thewa'lls of cylinders i0 and I2 and through the annular space 24 and a flue connection .32 is provided leading from the space24 for connection to a stack.

It will be noted that a passageway extends from .thescombustion chamber 30 through connection 26,, around and along the cylinder ii to the stack connection 32 whereby heat is conev ducted back and .forth of the boilerand around the cylinder 12. In this way the .walls of the members I'll, I2 and .I'B areheated. 1

The cylinders ill and i6 being spaced lfrom the casing sections 2 and 4 and from rear end wall 6 and the cylinder 1:2 being open :at its end there is provided .a water space adjacent tothe walls of members .i ll, .I 2 and 16.

The arrangement is such as to provide -,-alternate adjacent water and heating Spacersso that with the cylinders made from sheetmetal which is relatively thin, the heat transferis .most efficient. The water level .may be as desired-but will be for the most practical purposes at or somewhat above the upperside of cylinder in.

-Heating means is preferably disposed at the left end :of the :tubular member 16 and while it may take any form desired, .aliquid fuel burner apparatus iis preferred. Such is associated with the inovel head construction of this invention at said forward end of the member It which will be :presently described.

With an oil burner located as described the products of combustion travel from thecombustion chamber :30 through connection :26, around and along annular space '.24:between cylinders -10 and 12 to the stack connection 32. The cylinders i6 and .10 being surrounded by water "with the cylinder i2 open at its end :the'heat transfer ?is mostefficient.

In same cases it may *be desired'to locate means in the chamber iifi to provide additional'heat absorbing properties and at the same time prevent swirling of the fiame from the burner.

To that end angular shaped longitudinally extending members fill are arranged within the member 16, as shown in'Figs. 4 and 5. Thelongitudinal edges of the members 40 are securedto the'member 16 which is cutaway between-adjacent edges of the members 40 and cross shaped end plates 42 are'secured by welding to the opposite ends of members 40 and to member It.

The construction is such as to divide the chamher- 30 into separatelongitudinally extendingpassageways 44 for the products of combustion anda cross-shaped -water compartment 46 which is "in communication with the water space around member I6, as shown.

A head 50 for liquid fuel burner apparatus is associated with the front wall 8 which may be rigidly secured thereto or it may be bolted in place by some convenient method with a suitable packing when necessary disposed between a flange 52 thereof and said front wall 8. An outer end wall 54 of the head may carry a support 55 secured thereto for an oil delivery nozzle '56 and spark plugs 58.

An inner wall 60 is spaced from and arranged more or less spirally relative to the outer wall 62 of the head so as to provide a circumferential space 64 which may be a water space, see Figs. 1 and 2. A transverse partition Wall 66 is provided and it has secured thereto a more or less dished plate 68 provided with a, central aperture for the passage of atomized fuel and air into the combustion chamber 30.

A hollow air inlet member 12 which may be connected to any suitable source of air such as a blower, pump or the like is provided and extends through the outer peripheral side wall 62 and into communication with the space within the wall 60. The space 64 around wall 60 may be utilized as a water space and the inlet member 72 extends therethrough into the space within the said wall 60.

This member 12 has a partition 14 corresponding to wall 66 so as to provide separate adjacent air delivery passageways 76 and 78 leading into the space within wall 60 at oppoiste sides of the partition wall 66.

Vanes such as 80 within the said passageways ,16' and 18 have their lower ends secured to one Wall of the member 12 and adjusting bolts 84 in engagement with opposite walls of the member 12 have their inner ends in abutment with the vanes. As the bolts 84 are moved in and out, their ends act on the vanes 80 to move them relative to the passageways so that the areas of the said passageways may be varied.

The vanes by being adjustable are adapted to control the air delivered to the spaces at opposite sides of the partition 66. In this way it is possible to provide the same or a relatively greater or less volume or velocity of air at opposite sides of the partition which according to the delivery of fuel and the type of fuel, its pressure, etc., will accomplish the desired combustion effect all to the end that the apparatus may be operated with the utmost efliciency and economy commensurate with the type and grade of fuel being used.

The water space between the walls 60 and 62 will be in communication with the water space of the boiler through openings 90. Or said openin s may be closed by p ugs of ordinary form and the openings closed by plugs 92 as shown may be connected to a hot water supply system. In either case water in said space will be heated.

From the foregoin it will be observed that the novel construction is such as to be efficiently and economically produced while at the same time it occupies but small space and its components are so related as to result in economical and efiicient operation. The novel head arrangement makes it possible to deliver air in the desired volume and velocity at opposite sides of the transverse partition to obtain the desired combustion effect while at the same time the head may be utilized for supplementing the heating of the boiler water or for numerous other purposes.

The invention may be embodied in other spa-- cific forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore to be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all modifications and variations that fall within the meaning and purview and range of equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

1. Burner head construction comprising in combination, vertical outer and inner end walls, substantially cylindrical spaced and coaxially disposed outer and inner longitudinal walls extending between and spacing said end walls and secured thereto providing an inner combustion space and a separate annular water space therearound, a vertical partition wall disposed transversely of the combustion space intermediate the end walls forming separate outer and inner compartments therein and provided with a restricted opening therethrough, and a hollow member extending inwardly through the outer cylindrical wall and water space having outlets leading into the outer and inner compartments of the combustion spaces at opposite sides of the partition wall and having inlets externally of the outer cylindrical wall.

2. Burner head construction comprising in combination, vertical outer and inner end walls, substantially cylindrical spaced and coaxially disposed outer and inner longitudinal walls extending between and spacing said end walls and secured thereto providing an inner combustion space and a separate annular water space therearound, a vertical partition wall disposed transversely of the combustion space intermediate the end walls forming separate outer and inner compartments therein and provided with a restricted opening therethrough, a hollow member extending inwardly through the outer cylindrical wall and water space having outlets leading into theouter and inner compartments of the combustion space at opposite sides of the partition wall and having inlets externally of the outer cylindrical wall, and means in each air inlet for controlling the flow of air therethrough,

GEORGE IRVING CARTER.

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

UNITED STATES PATENTS Number Name Date 522,340 Freakley July 3, 1894 1,495,860 McKean May 27, 1924 1,625,193 Boehm et a1 Dec. 13, 1937 1,756,484 Gast Apr. 29, 1930 1,910,349 McNeal May 23, 1933 1,918,397 Jetzler July 18, 1933 2,000,733 Avery May '7, 1935 2,018,582 Theunissen Oct. 22, 1935 2,039,890 De Coster May 5, 1936 2,206,070 Andler July 2, 1940 2,287,057 Page June 23, 1942 2,334,314 Campbell Nov. 16, 1943 2,338,846 Hallinan Jan. 11, 1944

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