US2515813A

US2515813A - Air register for furnaces

Info

Publication number: US2515813A
Authority: US
Inventors: Wiant Hugh
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-11-09
Filing date: 1946-11-09
Publication date: 1950-07-18
Anticipated expiration: 1967-07-18

Description

18, I w N 2,515,813

AIR REGISTER FOR FURNACES Filed Nov. 9, 1946 INVENTOR HUGH WIANT ATTORNEY Patented July 18, 1950 UNITED STATES PATENT OFFICE AIR REGISTER FOR FURNACES Hugh wiant, Westfield, N. J.

: Application November 9, 1946, Serial No. 708,954

This invention relates to air registers for. furnaces of the type employed in industrial installations wherein relatively large quantities of fuel are burned, and the invention consists essentially of a device inserted through an opening in the furnace wall which is adapted to support the fuel burner and provide means for controlling the flow of combustion supporting air into the furnace.

One of the objects of the present invention is to provide an air register of the above general type and for the specified purposes that may be completely assembled as a unit prior to the installation thereof in a furnace. Such an arrangement greatly facilitates installation of a register and-the only operation necessary at the furnace is to attach the register to thesupports therefor.

Another object of the invention is to provide an air register which has means for holding the burner to be associated therewith in place at substantially the center of the register and without any appreciable obstruction, other than that of the burner itself, to the flow of combustion supporting air through the register.

Still another object of the invention is to provide a register which effects a more nearly complete mixture of the fuel with the combustion supporting air whereby more complete and rapid combustion is possible.v Such an arrangement tends to decrease the flames in the furnace whereby the furnace may have a smaller combustion space.

Still another object of the invention is to provide an air register having a minimum number of parts or components and particularly a minimum number of movable parts whereby adjustment and servicing of the register is facilitated.

The above and further objects of the invention will be more apparent hereinafter in the following detailed description of a preferred embodiment thereof wherein reference is made to the accompanying drawings, in the latter of which: Fig. 1 is a vertical sectional view taken substantially through the center of an air register constructed in accordance with the present invention;

Fig, 2 is a front end view partly in section of the register shown in Fig. 1;

Fig. 3 is a sectional view taken substantially on,

line 3-3 of Fig. 1; and

Fig. 4 is a fragmentary detailed view of a part I of the front of the register.

Referring to the drawings, the register includes a main cylindrical section or tunnel, indicated generally by reference numeral II, which is inserted in the register.

1 Claim. (01. 15 -15) propriate size in the wall of a furnace. A furnace wall composed of the usual material is indicated by reference numeral I2, and the length of the tunnel I l is such that with the inner end substantially flush with the inside of the furnace wall, the outer end thereof will extend a considerable distance from the outside of the wall.

The tunnel II has formed on the outer end thereof a radially extending flange I3 which is rectangular in shape, and bolts such as I4 extendin through the flange enable the tunnel to be secured to a pair of channel members IS. The channel members I6, one above and one below the tunnel Il, may also form a part of the furnace wall supporting structure, and a plurality of registers of the type shown in the drawings may be secured thereto by means of cap screws N, Fig.

2, is a cup-shaped cover, indicated generally by reference numeral I8, which has an end section [9 and a cylindrical section 2I having substantially the same inside diameter as that of the tunnel I I. The cylindrical section 2i of the cover I8 has a plurality of rectangular shaped openings or air ports 22 therein, and the end section 19 has a plurality of openings or ports 23 therein. The end section [9 also has a central opening or bore 24 with a sleeve 26 formed integrally therewith. Among other things, the sleeve 26 provides an opening through which a burner, indicated generally by reference numeral 21, may be The burner 21 may be of the type disclosed in my co-pending application bearing Serial No. 682,576, filed July 10, 1946.

The burner extends into the register so that the tip thereof, as shown in Fig. 1, is a, little short of the inner end of the tunnel and it is held in p1ace with respect to the register by set screws such as 28 through the sleeve 26.

The end section I9 of the cover It extends a slight distance beyond the cylindrical section 2| to form a retaining ridge 30 for a split sleeve 29 surrounding the cylindrical section and located between the ridge and the flange 3| by which the cover is attached to the tunnel I I. The split sleeve 29 has a plurality of rectangular shaped openings or ports therein corresponding to openings 22 in the cylindrical section 2| of the cover. By

adapted for insertion through an opening of anrotating the sleeve 29 around the cylindrical St l-1 3 tion 2|, the area of the openings through both may be increased or decreased to control the amount of combustion supporting air flowing to means for rigidly connecting the ends of the split sleeve.

The operating member 34 may be connected through a link 36, preferably adjustable; to a suitably guided register operatingrod 31. Other similar links, such as 36a, connecting other register operating members, such as 34a, to the rod 311 enable a plurality of "registers to be operated simultaneously.

Pivotally mounted on the inner end of the central sleeve 26 of cover I8 is a disc member. 38 with openings 39 therein corresponding to the openings 23 in the section I9 of the cover. Threaded into the disc38 and extending through one of the openings 23 in the cover I8 is a member 4|. By unloosening the member-M the disc 38 may be rotated to bring the openings 39 therein into registry with the openings 23 in the cover, or to an intermediate position as shown in Fig. 4, and thereby provide means for inserting a torch in the register to light the burner and to observe the same.

Located inside the tunnel I 1 near the inner end thereof is a ring 42 which, as shown in Fig. 1, slopes inwardly at an angle of approximately 45 toward the central axis of the tunnel H. Next to the ring 42 and extending to the inner end of the tunnel I l is a ring of refractory material 43. The inner diameter of the refractory ring 43 is substantially equal to the inner diameter of the ring 42 and the reduction in diameter of the tunnel [I that is caused by the ring 42 and refractory material 63 increases the velocity of the air passing through the tunnel and directs the same toward the center thereof and toward the tip of the burner 21.

Located on the inner side of the ring 42 in the tunnel I! are a plurality of angularly positioned fins 44. These fins impart a whirling motion to the air flowing through the tunnel H" whereby the air is more thoroughly mixed with the fuel projected from the burner tip. In addition to giving the combustion supporting air a whirlingmotion, the fins being next to the ring 42 and having an' edge anchored thereon as by welding are heated by the absorption of heat from the burner flame, and accordingly theair flowing past the fins is partially preheated; The preheating. or

the air is a material aid to combustion," par- 95 tha re t swea in c on f th Ps is obtained, resulting in the reduction of the space required for combustion. Also, a register is provided which has a minimum number of movable parts which may easily and readily be adjusted and which readily adapt themselves for simultaneous adjustment by a single control member when a plurality of such registers are employed in a furnace.

While the invention has been described and shown inonly a preferred embodiment thereof, it will be obvious that various modifications thereof may occur to those skilled in the art without departing from the spirit or essential attributes ,thereof, and .it is desired therefore that only such limitations be placed thereon as are specifically set'forth in the appended claim.

What isv claimed is:

In combination with a fuel burner, an air register adapted for insertion through an opening in a furnace wall, said register including a cylindrical. tunnel section of uniform outer diameter adapted to extend through said furnace wall, said tunnel section having detachably secured. to the outer endthereof a cover, said cover including a control means for controlling the amount of combustion supporting air .fiowable through said register, said-control means including a cylindrical section-of said cover substantially equal in diameter to that of said tunnel section with a set of openingstherein, a pair of radially extending guide flanges formed on the outside of said cylindrical section adjacent the ends of said openings therein, a split cylindrical sleeve having a set of openings corresponding to those in the cylindrical section of-said cover, said split sleeve surrounding the cylindrical section of said cover having the openings therein, said sleeve being rotatable about the axis of said cylindrical section and between 'said guide flanges whereby movement of said sleeve with respect -to said cylindrical section is effective to control the air through both of said sets of openings, means for joining the sides of said split cylindrical sleeve to form a rigid sleeve, said last mentioned means being adjustable to vary the diameter of said split sleeve, said cover also ineludingan end section having at its center a sleeve-for supporting on the inside thereof the burner tube, openings in said end section, a

disc element abutting said end section and rotatableo'nsaid sleeve to bring openingstherein into and out of registry with those in said end section.

H HUGH WIANT.

- REFERENCES CITED Thev following referenees are of record in the .UNI'IZEDfiTATES, PATENTS