US2413578A

US2413578A - Heating drum

Info

Publication number: US2413578A
Authority: US
Publication date: 1946-12-31
Anticipated expiration: 1963-12-31

Description

Dec. 31, 1946. PENDERGRAss 2,413,578

HEATING DRUM Filed April 2, 1945' James A. PENDE'B6BN55 Mam Patented Dec. 31, 1946 UNITED STATES PATENT OFFICE HEATING DRUM James A. Pendergrass, Blanchester, Ohio Application April 2, 1945, Serial No. 586,175

4 Claims.

This invention relates to heating drums for use in connection with stoves and furnaces, or for connection with the smoke-stack or stove pipe as used thereon, and the primary purpose of the invention is to provide a heating drum for the purpose of utilizing the products of combustion from the stove or furnace for heating the air surrounding the drum as located in a room located above the said stove or furnace.

Another object of the invention is to provide a heating drum of the kind referred to, for locating in rooms above a stove or furnace, the said drum being constructed for trapping or retarding the hot gases passing upward through piping connected with the lower heating unit, thus increasing the efiiciency of said heating unit, reducing fire hazards, and utilizing otherwise wasted heat units.

Still another object of the invention is to provide a heating drum of the kind referred to, the same being constructed in a very simple and practical form and embodying an inner sheet iron drum preferably cylindrical in form and closed at top and bottom except for a hot air inlet at one side of the bottom and a compleniental outlet at the opposite side of the top, and additional cold air inlets through the bottom spaced inwardly from the said hot air inlet, the said inner drum bein supported in spaced relation to the fioor by means of legs, a similar outer sheet iron drum enclosing the inner drum and sufiiciently larger in diameter to provide there around an intermediate air circulating space between the two drums, the said outer drum being marginally open at top as seated over the inner drum and supported from the inner drum in spaced relation to the floor, the inner drum having lateral outlets into the top of the outer drum formed at a point immediately below the top outlet of the inner drum, and a fiat partition extended angularly within the inner drum between the hot air inlet and outlet thereof, whereby cold air as ascending into the inner drum through the cold air inlets of the bottom thereof, will strike upon the said partition in passing upward and spreading over the said partition will be heated by contact with the heated partition.

With the stated objects in view, together with such other and additional objects and advantages as may appear from the specification, attention is now directed to the accompanying drawing as exemplifying a preferred form of the invention, and wherein:

Figure 1 is a medial vertical section through a drum assembly or unit as contemplated by this 2 invention, as mounted within an upper room, the lower hot fiue gas inlet thereof being shown as connected with a stove or furnace pipe extended through the floor of the room, and the upper, flue gas outlet as connected with a pip leading to a chimney or other discharge channel.

Figure 2 is a side elevation of the assembly of Figure 1 taken on a ninety degree angle thereto at the rear side thereof, a section of the outer drum at the upper end thereof being broken away, to show the inner drum and the air inlets thereof leading into the air circulating space be tween the inner and outer drums.

Figure 3 is a top plan View of the assembly of Figure 1.

Figure l is a horizontal cross section on the line 4-4 of Figure 1.

In practising this invention I provide an inner sheet iron drum 5 preferably cylindrical in form and which is closed at top and bottom as indicated at 6 and '1, except for the lower hot flue gas inlet 8 through the bottom at one side thereof and the complemental upper flue gas outlet 9 through the opposite side of the top. through which inlet and outlet hot flue gases flow from the stove or furnace pipe into the chimney pipe, and except for the cold air inlet I0 through the bottom spaced inwardly from the said hot flue gas inlet 8, through which cold air inlets ID the cold air from the floor enters and passing up over the web, baffle or partition i6 is warmed or partially heated owing to the angular disposition of this baffle and thence passes out through the latera1 ports l5 and through the open top of the outer drum I! into the room. This inner drum thus prepared is supported upon legs ii in a spaced relation to the floor l2 of an upper room wherein the unit is mounted. The lower hot flue gas inlet 8 is connected with the stove or furnace pipe l3 as leading from the stove or furnace (not shown), while the upper flue gas outlet 9 i similarly connected with the flue or chimney pipe M. The inner drum is also provided at a point immediately below the top flue gas outlet 9 and at the side of the drum with lateral air outlets into the top of the outer drum, as indicated at l5.

A flat air spreading web or partition It, also of sheet metal, is extended angularly within the inner drum 5 fro-m bottom to top thereof, between the lower hot flue gas inlet 8 through which the hot flue gases flow into the inner drum 5 and the upper outlet 9, transversely across the drum, from the inner annular margin of the lower inlet 8 to the outer annular margin of the upper outlet 9. It is to be noted that the top of the inner drum 5 is of corrugated formation, as clearly shown in Figures 1 and 3, so that the rising hot air within said drum will be held Within these corrugated formations and there held until it yields its heating quality through the top of the drum to the superposed air. A similar, outer sheet iron drum l1, encloses the inner drum all around, and is sufliciently larger in diameter to provide therearound an intermediate air circulating space l8 between the two drums, the said outer drum being marginally or circumferentially open at its upper and lower ends as indicated at I9, thus causing the cold air from the floor 12 of the room, to flow up through the lower cold air inlets ID of the bottom of the inner drum 5, thence up over the web or partition [6, out through the lateral outlets or ports l5 into the top of the outer drum l1, and thence upward and out into the room, this upward flow of the air being caused by the heating of the air in passing up over the said web or partition I5.

The outer drum I1 is supported from the inner drum 5 by means of spacing rings 20 interposed at top and bottom horizontally between the two drums, and anchored to each in any conventional manner. The outer drum I7 is also supported in this same manner above the floor l2, and in a spaced relation thereto, so that cold air may flow freely thereunder and up through the cold air inlets In of the bottom of the inner drum 5, and thence up and out in the manner stated. The baffle l6 functions to separate the products of combustion or flue gases from the air being heated.

It is thought that from the foregoing description the construction and operation of the invention will be fully understood, and while I have here shown and described a specific embodiment of the invention and specific structural features thereof, this form of construction may be varied as desired, within the scope of the appended claims.

Iclaim:

1. In a heating drum unit of the kind described, drums assembled one about the other with an intervening air circulating space therebetween, the said drums being supported endwise and vertically from the floor of a room so that air may flow freely beneath the lower ends thereof, the upper and lower ends of the inner drum being closed except for a hot flue gas inlet at the lower end and at one side of the inner drum and a hot flue gas outlet at the opposite side of the upper end of the inner drum for connecting with a, stove or furnace pipe at the lower end and with a chimney at the upper end, the bottom of the inner drum being formed with cold air inlets spaced inwardly of the hot air inlet, and formed at a point iremediately below the hot air outlet with lateral air outlets leading into the outer drum, and a flat, air spreading partition extended angularly within the inner drum from bottom to top thereof from the inner annular margin of the lower hot air inlet to the outer annular margin of the upper hot air outlet, transversely across the inner drum and thus separating the lower hot air inlet from the lower cold air inlets, so that cold air passes through the unit to flow up through the lower cold air inlets up over the said fiat partition and thence out through the said lateral outlets into the top of the outer drum and thence outwardly into the room, and hot flue gas on the other hand may flow continuously through the unit from bottom to top thereof and incidentally heat the said partition.

2. In a heating drum as defined in claim 1, the top of the inner drum being corrugated for the purpose of holding, retarding and dissipating heat as impinged against the top.

3. In a heating drum assembly of the kind referred to, a sheet iron drum closed at top and bottom except for a, hot flue gas inlet at one side of the bottom and a complemental flue gas outlet at the opposite side of the top there being additional cold air inlets formed through the bottom and spaced inwardly from the said hot flue gas inlet, means for supporting the drum in spaced relation to the floor of a room, a, similar sheet iron drum inclosing the first mentioned drum and being of sufliciently larger diameter to provide therebetween an air circulating space, the said inclosing drum being marginally open at the upper and lower ends thereof as seated over the other drum and being supported therefrom in spaced relation to the floor wherein the unit is located, the said first mentioned or inclosed drum having lateral outlets at its upper end into the upper end of the inclosing drum and formed immediately below the top hot flue gas outlet of the inclosed drum, and a fiat partition or bafiie of sheet iron extended angularly within the inclosed drum between the lower hot flue gas inlet and the similar upper outlet, whereby cold air as drawn from the floor by convection and into the drum assembly through the lower marginal opening between the two drums, will pass over the said partition or baifie and be heated by contact therewith and thence expelled through the said lateral outlets of the inclosed drum into the top of the inclosing drum and thence out into the room.

4. In a heating drum unit as defined in claim 3, the top end of the inclosed drum being corrugated for the purpose of holding, retardin and dissipating the heat as impinged against said top.

JAMES A. PENDERGRASS.