US1643705A

US1643705A - Wall furnace

Info

Publication number: US1643705A
Application number: US154669A
Authority: US
Inventors: Hugh T Dykes
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-12-14
Filing date: 1926-12-14
Publication date: 1927-09-27
Anticipated expiration: 1944-09-27

Description

Sept. 27,1927. I H T DYKES i ,7 5

WALL FURNACE Filed Dec. 14. 1926 s Sheets-Sheet 1 1 N VENTOR.

A TTORNEYJ.

Sept. 27,1927, v 1,643,705

- H. T. DYKES WALL FURNACE Filed Dec. 14. 1926 3 Sheets-SheetZ k 1 I IN ENTOR.

ATTORNEYS Sept. 27, 1927. 1,643,705

. H. T. DYKEs v WALL FURNACE Filed Dec 14. 1926 s Sheets-Sheet 5 ATTORNEYS V Patented Sept. 27, 1927.

v UNITED STA TJEs: PATENT OFFICE;

HUGH '1. DYKES, BERKELEY, CALIFORNIA.

WALL FURNACE,

Application filed December 14, 1826. Serial NQ.154,,669.

My invention relates to the class of heaters adapted to be seated in a wall, and

for which reason theyare commonly termed and to secure efficient heat interchange, the paths of the. air and the combustion products lie on opposite sides of heat conducting walls which are so con-. structed and relatively arranged as to pro-. vide the maximum extent of surface, and to direct said fluids freely and without impediment or congestion the oneinto the room as highly heated fresh air, and the other to the exterior as spent gases. which have given up their useful heat,

The nature of my wall furnace and the manner of its operation willnow be fully explained and ascertained in and by the following description taken inv connection with the accompanying drawings, in which its preferred forms are illustrated, though is to be understood that changes in structure, form and arrangement may be made, within the scope of my invention, without departing from its spirit; as defined in the claims hereunto appended.

In the drawings, Fig. 1 is a vertical sectional side elevation of my wall furnacein a form contemplating its installation in a recess in a relatively thick wall, and showing one form of the respective fluid paths in the initial heating drum.

Fig. 2 is a horizontal section on the line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional side elevation of the furnace adapted for seating in an aperture of a wall. of ordinary thickness. and showing another course of the paths of the fluids in the initial heating drum.

Fig. 4 is a horizontal section on the line 4-4.1- of Fig. 3. Fig. 5 is a vertical section on the line 5.5 of Fig. 6, showing the two heating drums and their connectiverelation as in Figs, 1 and 2. Fig. 6 is a. topplan of same. F ig. 7 isa vertical section onthe line 77 of Fig. 8, showing the: two heating drums and their connective relation as in Figs. 3 and 4. Fig. 8 is a top. plan of" same. Referring to igs. 1- and2, the numeral 1 indicates a sectional fragment .of a relatively thick wall of a building, the right side to be takenas the exterior or outerlair, and the left side as the interior of aroom.

In the Wall 1 .is. made a recess into, which is fitted with suitable protective aJKlHTLOhconducting packing, not shown, but usual in such cases, a metallic shell comprising a front wall 2, a rear wall 3', a rearwardly inclined top wallt, preferably curved, and a partition 5 depending from'the top wall andterminating short ofthe bottom of the shell. This partitiondivides the shell into two compartments, one front and the other rear.

In the upper portion of thefront wall 2 of the shellis made the grating 6 for'the delivery of the heated air to the. room.

Within the front compartment of the shell is thegfire box or combustionchamber 7, in which the source of heat is located;

Any suitable fuel maybe used and a burner of any typeappropriate for such fuel. I prefera liquid form of fueh such for example, as kerosene, and I have indicated by the dottedlines at 8 what maybe considered as a burner. i r i Surmounting the fire box is the initial or front heat-interchanging drum 9. There may be aplurality. of these, but I have here shown only one, In its best andv preferred form; it is a double walled shell, the walls being spaced and star-shaped in- .cross section in order to provide as. extensive a heating surf-ace as. possible. The burner delivers the, products of combustion in the. form shown in Figs. 1; and 5,to the bottom of. the

central space of the drum 9, but the space between the walls. the space exterior to said drum arenot exposed to said, combustion products because of the closures, bottom and top as seenin -Fig S. Both said interwall and exterior space are, however, exposed at the top to the room -grating 6, and at thebottonr they communicateunder the partition 5 withthe rear compartment of the casing, the inter-Wall space having such municationthmugh. e. r m re Pip 10 leading through the outer shellof the um 9 e F a.

is a piPef r mi$lhing a rt i e burner, n upp rt. l i st 1 -v 12 s he rear heat-interchanging drum. It occupies the rear compartment of the casing and 1ts best and preferred form 1s similar to that of the front drum, namely a double shell with spaced walls and star-sha 38d in cross section. 13 is a pipe which leads from the top of the central space of the front drum 9 to the top of the inter-wall space of the rear drum 12 so that the products of combustion pass from the center of the initial drum to the space between the walls of the second drum as seen in Figs. and 6.

1 1 is a pipe leading from the lower portion of the inter wall space of the second drum outwardly through the building wall to the exterior and continuing as the stack 14 of the furnace.

Inthe wall 1 of the building is a fine 15, which leads from the outer air above the furnace towards but stops short of the inner side of said wall. The flue continues from its inner end, backwardly over the top wall of the casing as at 15 and down back of its rear wall as at 10 This flue section 15 communicates through a pipe 16 with the bottom of the center space of the rear drum 12 and said space at its top opens freely into the upper port-ion of the rear compartment of the fur nace casing, see Figs. 1, 5 and 6.

There is an inclined baflie 17 between the top wall 4 of the casing and the upper portion of the depending partition 5. The sev eral arrows in Fig. 1 show the paths of the counter-flowing fluids, The products of combustion pass up through the center of the front or initial drum 9; over through the pipe 13 to the top of the inter-wall space of the rear drum 12; down in said space to the pipe 14 and out through the stack 14.

The fresh air from the outer atmosphere passes in through the fine 15 and back again and down in the

flue sections

15 and 15 to the pipe 16; through said pipe to the bottom of the central space of the rear drum 12 and up through said space to and into the upper portion of the rear furnace compartment, where meeting the inclined baffle 17 and the downwardly curved top wall of the casing, said air is directed downwardly in said compartment all around the exterior of the rear drum. At the base of said compartment the air, passing under the partition 5, a portion rises in the front compartment all around the front drum 9 and another portion entering the pipe or pipes 10, passes up in the inter-wall space of said front drum, and both portions, uniting above, are delivered through the grating 6 into the room.

It will be seen that these paths of the two fluids in the arrangement of Figs. 1, 5 and 6 are reversed in the two

drums

9 and 12 in respect to position. In the rear drum 12 where the air is the colder and the products of combustion have already yielded up much of their heat, the latter are carried through a space which lies between two air bodies, namely that portion which rises in the center of the drum and that which descends around said drum, and said combustion products are thus exposed on all sides to heat interchange and are induced to yield up practically all that remains.

In the front or initial drum, where the combustion products are the hottest, the positions are reversed, the heating gases passing up through the middle, while the preheated air is extensively distributed around it, both in the inter-wall space and around the drum, and thus receives sufficient final heat, without abstracting too much from the combustion products to lower their efficiency in their preheating function in the rear drum.

It is not essential, however, to all forms of my furnace that this reversal of the fluid paths in the two drums be present. For example in Figs. 3, 7 and 8 wherein like numerals as in Fig. 1 are used to indicate like parts, a slight change is made, in that in the initial drum 9, the products of combustion pass up through the inter-wall space, while the air passes up not only around said drum but also through the pipe or pipes 10 into the central space of the drum, thus providing for similar fluid paths in both

drums

9 and 12.

The form of my furnace shown in Figs. 3 and 1, isin another respect a development of the invention, with respect to its casing whereby it is adapted for installation in a narrower wall of a building.

In these figures the building wall is indi cated by 1. An aperture is made through the wall and the furnace is fitted in and through said aperture. The

casing walls

2, 3 and 1 are here present as in Fig. 1, but they are supplemented by an exterior shell 18 joined to the front wall 2 and spaced from the inner walls, and in this space which serves as non-conductor of heat the

fresh airflues

15,15 and 15 lie. Thus, the furnace is a unitary structure adapted to be readily fitted to the ordinary wall of a building.

I claim:

1. A wall furnace comprising a casing having communication at one side with the outer air and at the other side with a room; a partition depending from the top of the casing dividing it into separate compartments communicating under the partition;

a heating drum in each compartment; a

burner and a stack associated with the said drum respectively; and a conduit between said drum to complete a closed path for the productsof combustion through said drum to the outer air. 7

2, A wall furnace comprising a casing having communication at one side with the outer air and at the other side with a room; a partition depending from the top of the casing dividing it into separate compartments communicating under the partition; a heating drum composed of nested spaced shells in each compartment, each drum being formed with a flue for the products of comhustion and with a through air passageway; aburner and a stack associated with said drums respectively; and a conduit between said drums to complete a closed path for the products of combustion through said drums to the outer air.

3. A wall furnace comprising a casing having communication at one side with the outer air and at the other side with a room; a partition depending from the top of the casing dividing it into separate compartments communicating under the partition; a heating drum composed of nested spaced shells in each compartment, each drum being formed with a flue for the products of combustion and with a through air passageway;

a burner and a stack associated with said drums respectively; a conduit to complete a closed path for the products of combustion, said conduit connecting the central flue of the drum in the compartment nearest the room with the inter-wall flue of the drum in the other compartment; and a conduit opening from the inter-wall air passageway of the first named drum into the housing compartment of said drum.

4. A wall furnace comprising a casing having a front wall with communications with a room and double spaced walls extending from the front Wall said wall space communicating with the outer air and with the interior of the casing; a partition depending from the top of the casing dividing it into separate compartments communicating under the partition; a heating drum in each compartment; a burner and a stack associated with the said drums respectively; and a conduitbetween said drums to complete a closed path for the products of com bustion through said drums to the outer air.

In testimony whereof I have signed my name to this specification.

HUGH T. DYKES.