US2835322A

US2835322A - Firing head for furnaces

Info

Publication number: US2835322A
Application number: US545272A
Authority: US
Inventors: Sr Leonard Vignere
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-09-04
Filing date: 1955-11-07
Publication date: 1958-05-20
Anticipated expiration: 1975-05-20

Description

y 20, 1953 L. VIGNERE, SR 2,835,322

FIRING HEAD FOR FURNACES Original Filed Sept. 4, 1952 FIG. I

A c [2| IO f 32" 34 ll 27 35 4 INVENT OR Leonard Vignere, Sr.

ATTORNEY} FIREJG HEAD FOR FURNACES Leonard Vignere, Sn, New Castle, Pa.

Griginal application September 4, 1952, Serial No. 307,860, new Patent No. 2,732,890, dated January 31, 1956. Divided and this application November 7, 1955, Serial No. 545,272

2 Ciairns. (Cl. 158-28) This invention relates to firing heads of furnaces and this application is a division of my application Serial No. 307,860 dated September 4, 1952, which matured into Patent No. 2,732,890, dated January 31, 1956, and was in turn, a continuation-in-part of my application Serial No. 188,380, filed October 4, 1950 which has matured into Patent No. 2,670,032 dated February 23, 1954.

An important object of the present invention is to improve the firing head disclosed in the application, Serial No. 188,380, referred to above, in order to render it more eflicient when in use. This has included the rearrangement of baffles to cooperate with oil gas generating burners, particularly of the structure disclosed in my application Serial No. 307,860, referred to above, to provide for elfective gasifying of oil mist, utilization of all of the oil gas, and elimination of most of the undesirable solid products of combustion; the formation of the firing head in two readily separable parts for etficient assembly and disassembly; the provision of means to adjustably support an upper firing head section upon a lower firing head section, so that the spacing apart of the two may be varied-as required and the upper section levelled; and the reduction in the body weight of the firing head by forming the body portion of the upper section thereof as a shell rather than a solid member.

Other objects and advantages of the invention will be apparent during the course of the following detailed description of the invention, taken in connection with the accompanying drawing, forming a portion of this dis closure and in which drawing:

Fig. l is a vertical section through the firing head and associated structure of a furnace of which it forms a part.

Fig. 2 is a bottom plan of the lower section of the firing head.

Fig. 3 is a top plan of the lower section of the firing head.

Fig. 4 is a bottom plan of the upper section of the firing head.

In the drawing, wherein for the purpose of illustration is shown a preferred embodiment of the invention and wherein similar reference characters designate corresponding parts throughout the several views, the letter A designates a furnace; B, an oil gas generating combustion head; and C, the firing head of the present application. 1

The furnace A includes an outer wall 10 defining a chamber 11 while the combustion head B, which is fully described in my application Serial No. 307,860, referred to above, includes support means which contains up wardly extending suports 12, which may be spaced apart cylindrical members with flat, horizontal upper end faces. The combination head B is also shown to include 2. casing 13 having an upper truncated cone-shaped wall 14 with a central opening 15. There is also shown an electrode 16 (being one of a pair) which may be employed in rates Patent 2,835,322 Patented Mary Z0, 1958 the production of electric discharges for igniting the oil gas and which extends with its free end over the mouth 15.

Referring now to the firing head C, the same comprises a lower section 20 and upper section 21, with the lower section having a somewhat dish-shaped body portion 22, open at its bottom to provide a substantially circular opening 23 surrounded by a tubular flange 24 carried by the body portion 22 and which may be provided with a cut-out 25 extending from the lower edge of the flange to accommodate portions of the pair of electrodes mentioned. It will be noted that the flange 24 extends both downwardly and upwardly from the lower end of the body portion 22 but the greater portion of the flange extends downwardly with the edge of its lower end portion being slightly above the horizontal plane of the upper edge 27 of the truncated cone-shaped wall 14, and the inner diameter of the flange 24 is considerably greater than the diameter of the central opening 15. For example, the inside diameter of the flange 24 may be about twice the diameter of the central opening 15. Carried by the body portion 22 is means to detachably mount the lower section 20upon the support 12. The means may be a plurality (three being shown, by way of example) of socketed members or projections 26 with the downwardly-opening socket thereof adapted to rather snugly receive the upper end portions of supports 12. This arrangement will support the lower section 20 and also prevent rotation thereof.

The upper section 21 includes a downwardly extending inverted cone-shaped central body portion 30 and an outwardly-extending arched peripheral flange portion 31 extending therefrom. Preferably, the body portion 30 is hollow, as may be seen in Fig. l and the outer edge parts of the flange portion 31 are above the tip 32 of the cone. Carried by the flange portion 31 are a plurality of spaced apart

flanges

33 and 34 depending from the lower face of the flange and with the inner end portions of the baflles 34 extending to the central body portion 30. It will be noted in Fig. 4 that the longitudinal axes of the baflles 33 are tangential to the periphery of the central body portion 30, while the longitudinal axes of the main body but the longitudinal axes of their minor body portions 36 are radially disposed with respect to the vertical axis of the central body portion 30. All baflies have lower edges 42 in the same horizontal plane and extend with their outer edges substantially in the same vertical plane as that of the outer edge of the flange portion 31. The central body and

outer flange portions

30 and 31 respectively and the

baflies

33 and 34 provide means, when heated, to complete gasification of fuel from the combustion head B and burning of the fuel below the upper section 21. For example, I have discovered that, employing an average grade of fuel oil under normal pressure and with the furnace in operation, the temperature just below the central opening 15 will be in the neighborhood of 900 F., while the temperature within the lower section 20 will be around 1000 F., but the temperature within the confines of the upper section 21 will have climbed to substantially 1840 F., and the heated gas emerging from the upper section 20, as shown by the arrows, will be at substantially 1840 F. and it is this heated gas which is provided for heating by the furnace.

Fig. 1 illustrates the preferred elevational .view of the bafiies 34 and the baffles 33 have substantially the same shape except that they do not have the minor portions 36. The shape has been discovered very conductive to good circulation of heated gas and its contact with the heated walls of the central portion 30 and flange portion 31.

Means to detachably support the upper section 21 asaasza a from and spaced above the lower section 20 preferably comprises a plurality of spaced-apart lugs 37' extending inwardly from the lower section 20 and provided with upwardly-opening recesses. 38, which recesses also preferably open toWa-rd the vertical axis of the section 20. These recesses 38 are adapted to receive the lower ends of screw threaded, levelling shanks 39 carried by downwardly-extending interiorly' screw threaded sleeves 40, with the screw threads of the shanks and sleeves mating, and the sleeves being exteriorly screw threaded at their upper end portions for mating with the screw threads of spaced apart" soclceted members 41 carried by the section 21 and extending downwardly therefrom. This permits ready removal of the section 21 from the section 20 without unscrewing or unbolting the sections, and the section 21 may be levelled as is obvious or lowered or raised as may be found desirable.

The tubular flange 24, where it extends above the opening 23- provides, in conjunction with the wall of the body portion 22, a circular recess or pocket for any solid products of combustion which might form above the body portion 22 and below the flange portion 31 and are not blown outwardly from the bafiies. The flange 24 also tends to prevent fuel from passing outwardly in a generally horizontal flow as it emerges from the upper end of the opening 15.

The arrangement of the specific baflles provided, in conjunction With the inverted conical central body portion 30 and arched peripheral flange, is conductive to consumption of substantially all the oil gas which is combustible.

\ Various changes may be made to the form of the invention herein shown and described without departing from the spirit of the invention or scope of the claims.

What is claimed is:

l. A furnace firing head including a lower section provided with a dish-shaped body portion having an upper edge of greatest diameter, a centrally-disposed lower opening and a tubular flange extending downwardly from said body portion at said opening, an upper metallic section having means to promote gasification and ignition of fuel from said lower section when said upper metallic section is heated, and to guide the gasified and ignited fuel outwardly of said upper metallic section, including an inverted cone-shaped central body portion, an arched flange portion extending outwardly from said central body portion with the vertical plane of said upper edge extending beyond the outer edge of said central body portion and a plurality of spaced-apart bafiies extending downwardly from said arched flange portion, each baffle having a major body portion with its longitudinal axis tangential to the vertical axis of said central body portion, and adjustable levelling means supporting said upper metallic section with the lower edges of all of said battles substantially paralleling the horizontal plane of said upper edge and spaced from said lower section.

2. A furnace firing head according to claim 1- characterized in that some of said baflies have minor bafiie body portions extending radially toward said vertical axis of said central body portion.

References. Cited in the file of this patent UNITED STATES PATENTS 547,473 Ball Oct. 8, 1895 971,561 Rhea Oct. 4, 1910 1,132,722 Kloeb Mar. 23, 1915 1,522,064 Johnson Jan. 6, 1925 1,822,844 Klees Sept. 8, 1931 1,987,487 Moore Jan. 8, 1935 2,231,042 White Feb. 11, 1941 2,475,240 Hass'mer July 5, 1949 2,660,230 Denker etal Nov. 24, 1953 FOREIGN PATENTS 556,136 Great Britain Sept. 21, 1943