US1205436A - Mixing unit for gases. - Google Patents

Description

F. G. CRONE.

MIXING UNIT FOR GASES.

APPLICATION FILED APR.22.1914.

1,205,436. l Patented NOV. 21, 1916.

MIXING UNIT non GASES.

Specification of Letters Patent.

Application led April 22, 1914. Serial No..833,650.

T all whom it may concern Be it known that I, FRANCIS G. CRONE, a citizen of the United States of America, and a resident of the city of Buffalo, county `of Erie, and State of New York, have invented certain new and useful Improvements in Mixing Units for Gases, of which the following is a full, clear, and exact description.

My invention relates generally to mixing units, and has for its principal object to provide a device which will more thoroughly mix the fuel and air and thus produce a more perfect combustion.

Another object of my invention has been to provide a device which may be used in connection with gas burners to improve the combustion and to prevent back firing.

My device comprises a plurality of members so formed and arranged as to provide a plurality of passage ways through which the products of combustion are passed. By passing the products of combustion through these passage ways, the burning point is some distance from the mixing chamber and thus back tiring of the Haine is effectively prevented.

Reference is to be had to the accompanying drawings, forming part of this specilication, in which like characters of reference indicate like parts throughout the several views, of which: v

Figure 1 is a perspective view of a rectangular-shaped unit, composed of a number of members disposed one above the other. Fig. 2 is a plan view of a. unit formed of circularly-shaped rings instead of fiat plates. Fig. 3 is a sectional view of the same and is taken on line 3 3 of Fig. 2. Fig. 4 is a front elevation of a sector-shaped furnace gas burner embodying my invention. Fig. 5 is a plan view of the same, partly broken away. Fig. 6 is a front elevation of a modified form of unit. Fig. 7 is a sectional elevation taken through the center line of a furnace which has been provided with burners embodying my invention. is a plan view of aburner in which the circularly-shaped units are used.

My vdevice comprises units 10, which are preferably formed of cast material. and are each provided on one surface wit-h a pluralitv of corrugations or grooves l1 and on the opposite side with a smooth, flat surface. In the circularly-shaped unit shown in Figs. 2 and 3, the members l0 are made in Fig. 8-

the form of rings with the corrugations or grooves 11 formed on the outerl circumfer- 'ence and with the smooth surface on the inner circumference. These rings are preferably cast with tapered surfaces so that they may be easily assembled and when so assembled, are disposed one within the other.

In the gas burner shown in Figs. 4 and 5, the bottom of the burner box 12 is preferably provided. with a' plurality of corrugations or grooves 13, so that when theunits l0 are placed within'the box, the smooth surface of the lower unit will contact with the ridges on the bottom of the box and form an additional number of passage ways. After the members 10 have been placed in the box, a cover 14 is placed over the top and bolts 15 pass through the cover 14, members 10 and bottom of the box, thus securely holding the burner parts together. The box 12 is thus closed on all sides, except the face of the same where combustion occurs. The cover 1l is provided at each end with Patented Nov. 21, 1916.

a 1spacing rib 16, which acts to keep thev burner at a proper distance from the lirepot when placed in 'the furnace, as clearly shown in Fig. 7. The burner cover is also provided with a screw-threaded aperture by which the mixing pipe 17 may be attached to the burner. The bottom of the box 12 is also provided with a screw-threaded aper- Vture directly beneath the screw-threaded aperture in the cover 14 byl means of which the mixture may' be fed to the burner from the upper surface or the lower surface, as conditions may require. Obviously, when the mixing pipe 17 is attached to the cover 14 of the burner, the aperture in the lower side of the. box 12 is closedby means of a plug. The members 10 are placed flush with the front surface of the burner and do not extend back to the rear side of the box, thus providing a chamber 1S in which the mixture enters before it passes out from the plurality of passage ways formed by the ,members 10. As shown in Fig. 7, preferably four of these burners are used in the furnace, and each is provided with a separate mixing pipe 17, air mixers 28 and gas valves 19. These valves19 supply gas to the mixers from the gas pipe 20. As shown in this figure, the mixing pipes 17 are passed through the coal feeding opening 21 of the furnace and thence down to the burners. If, however, local conditions'do not permit these pipes to be arranged in this manner, they may be passed through the ash opening 22 and connected to the lovver side`of the gas burners.

In Fig. G, I shovv a modified form of unit vWhere alternate corrugated and smooth members are used. In this figure, the members 23 are provided with corrugations or grooves '2l on opposite sides, and when arranged in a unit a Hat member is alternately disposed between ,the corrugated tures, in each of which is arranged one of the circularly-sliaped units shovvnin Figs. 2 and 3.

Cbviously, if desired, the ring units shown. in Figs. 2 and 3, may be provided with the corrugations on the inner surface instead of the outer, or my units may be made in different shapes to conform to local conditions. These and man)v other modifications of the details herein shown and described may be made Without departing from the spirit .of f

my invention or the scope of the appended claim.

Having thus described my invention, what I claim is: s

.A mixingunit for gases comprising, a solid, annularly tapered central member having an external corrugated surface, an nnular member having a smooth, tapered, interior surface and a tapered, exterior, corrugated surfacedisposed around and in Contact with said central member, and an annular, exterior member having a tapered, Smooth, innersurface and a corrugated outer surface, said annular, exterior member being` disposed around said annular member and in contactivit-h the corrugations thereof.

In testimony vvhereof, I have hereunto signed my name in the presence of tivo subscribing witnesses.

FRANCIS G. CROXE. fitnesses a J. WM. ELLIS, WALTER H. KELLEY.

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