US1866290A - Water jacketed smoke hood - Google Patents

Description

` July 5, i932. F. cz.y BRADBURY 1,866290 WATER JACKETED SMOKE HOOD l Filed Dec. 29, 1928 2. Sheets-Sheet l www y -July 5, 1932.

F; c. BRADBURY WATER JACKETED suon: Hoon Filed Dec. 29, v1928 2 Sheets-Sheet 2 Patented July 5, 1932 atrae STATES r.flizirrA ortica d FRANK'C. BRADBURY, DECEASED, LATE OF RIVERSIDE, ILLINOIS, BY CARRIE LANDON BRADBURY, EXECUTRIX., OF RIVERSIDE, ILLINOIS, ASSIGNOR TO CRANE CO., F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS WATER JACKETED SMOKE HOOD Appiiauun med December a9, 192s. `serialA No. 329,241.

rIhis invention pertains to smoke hoods or smoke boXes, as theyare variously known, f

and which form a part of or are adapte-d to be connected to boilers or heaters of different types although more particularly adapted to beV used in connection with hot air, hot water or steam boilers for domestic uses.

One of the primary objects of the invention is to provide a smoke hood or smoke boxy so constructed and arranged that it may be interchangeably connected to the sameor different boilers with reference to installation on top or on the side of the boiler depend ing upon the construction of the boiler, the head room provided, etc.

It is also an object of the invention to provide a jacketed smoke hood in which the heat of a deflected flow of the flue gases is utilized.

Other objects, as well as the advantages and` Fig. 2 is a perspective view of a top portionl of a dierent type of boiler showing the invention applied thereto in one position,

Fig. 3 is a top plan detail view of a preferred form of the invention,

Fig. 4 is a side elevational view thereof, and

Fig. 5 is an elevational view of the outer end thereof.

The smoke hood or smoke boX is preferably an iron casting although it may be made of other materials and in other ways as will be appreciated. In Figs. 1 and 2 it is designated l as a whole and may be attached either to the top of a boiler or to one side of a suitable outlet opening for products of combustion as illustrated in these figures. The hood at the top is provided with a circular opening at its place of attachment to the boiler while that at the side isformed asshown 'in detail in Figs. 3, 4 and 5 except as will be pointed out hereinafter. Y

' Referring more particularly to Figs. 3, 4 and 5 a casing or shell 2, of substantially elliptical 'or ovalshape at its end to be disposed against-the boiler and open atsuch end for a connection over a similarly shaped opening in the boiler top or side wall, tapers down and merges with a cylindrical Wall 3 which is extended and somewhat vreduced as shown at 4 to provide one of a pair of stack v pipe connections. The other stack pipe connection designated 5 has a generally cylindrical wall 6 which merges with the wall 2f as shown at 7, the opening being in aplane non-parallel to either opening 4 or the inlet opening to the hood. In these figures the end of the hood that is to be disposed against the boiler is plane but where the hood is to be attached to a. curved surface as inthe horizontal position of Fig. 1, this end will be curved to correspond to such surface, suitable clearance being left for thedamper, as will be understood.

Surrounding practically all of the lwall 2 is ya Water chamber 8 provided by a second casing or shell 9 preferably integral with the casing or shell 2 but spaced therefrom.V

If the smokev hood is made as a casting this chamber is coredl out las will be understood.

walls or shells 3 and 6. Heated gases and.l

other products of combustion passingthrough the 'smoke hood or smoke box into a stack usually carry a great many more heat units than necessary to provide proper vdraftv facilities and these extra heat units are absorbed by Water contained in the jacket or water chamber surrounding the Vbody and stack portions'v of the hood. Suitable connection bosses 14A and v15 providing inlet and outlet openings land 17 respecboiler etc.

- this description.

` The smoke hood is provided with suitable external lugs 18 which are drilled or otherwise arranged for the reception of boltsor the like whereby the hood may be secured to the boiler and internally of each stack connection pairs of bosses 19 are provided for connection of bolts or the like for securing a stack pipe ora cap closure as the case may be. Parallel its long axis and adjacent its boiler connection end the body portion of the smoke hood is provided with bosses 21 l and 22 the irst of which is drilled through as shown at 23and the latter of which is provided with an internal socket 24 for the reception of trunnions 25 and 26 respectively of a damper 27. The trunnion 25 is provided -with a damper control lever 28 having a handle 29, the trunnion 25 beingl pinned in a socket 31 formed in the damper. he boss 21 is lprovided with projections 32 forming stops between which a projection 33 on the lever 28 may move and be limited. Between the stack connections 4 and 5 an opening 311 is provided to permit the smoke h ood or smoke box to be cleaned out or to permit inspection or to reduce the draft through the This opening is adapted to be closed by a door,vnot shown, butV normally hinged at its upper edge to a hinge plate or door frame' secured by bolts passing through drilled apertures 35.

.j t It will now be app-arent that the smoke hood is interchangeable with the top, side or back of a boiler or furnace and may be connected to a horizontal or vertical smoke stack in either of such` positions. It is preferable to use a stack connection which does not lie in a plane parallel to the hood inlet in order to cause the hot gases of combustion to be deflected and of course7 the stack connection opening of the hood `which is not be-v ing used will be closed by a suitableV cap or plug, not shown. Vater entering the inlet through the water chamber in the hood enters at the theoretically coolest place, flows u wardly or downwardly as the case may be a out the combustion channel through the smoke hood and passes out at the theoretically hottest portion namely adjacent ythe boiler, from whence it flows to wherever it may be desired forV use. This arrangement effectsr considerable saving and unnecessary heat losses and provides a quick mode of obtaining hot water. There are many other advantages resident in the invention with.

which it does not seem necessary to vburden While the preferred form of the invention has been illustrated and described it is susceptible of many changes and variations bearing little, if any, structural resemblance to such preferred form. Consequently it is not desired that this application be limited except by the spirit of the invention and the scope of the appended claim.

Nhatis claimed is :V

A combined smoke hood and economizer comprising an integral casing providing a channel for the products of combustion of a furnace and having a body portion provided with an inlet. and a stack portion having a plurality of outlet openings for the products of combustion adapted to be selec tively connected either to horizontal or vertical stove pipes, said casing including means thereon for securing the inlet of said casing directly to the smoke offtake of a furnace, one of said stack openings lying in a plane parallelto said inlet and the other lying in a plane at right angles thereto, said channel through said latterV outlet being tortuous whereby the products of combustion are caused to be deflected in passing therethrough, an outer casing surrounding said first mentioned casing between said inlet and outlets embracing al part of said body portion and a part of said stack portion and prcifiding a water chamber tl erebetween in direct contact with that portion of the casing which detlects the products of combustion, and means for connecting said chamber to water inlet and outlet pipes.

In witness of the foregoing I affix my signature.

CAR-RIE LANDON BRADBURY, Eeeutwfx of the Estate 0f Frank 0. Bradbury, Deceased.

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