US1094686A - Sectional hot-air furnace. - Google Patents

Description

A. G. STAPEL.

SEOTIONAL HOT AIR FURNACE.

APPLICATION FILED JUNE 8, 1911.

1 094 6 Patented Apr. 28,1914.

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SEGTIONAL HOT AIR FURNACE. APPLICATION FILED JUNE 8, 1911.

1 94,686. Patented Apr. 28, 1914.

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APPLICATION FILED JUNE 8, 1911. 1,Q94,686 Patented Apr. 28, 1914.

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Inventor a 1 V I Attorneys A. G. STAPEL.

SEGTIONAL HOT AIR FURNACE.

APPLIGATION FILED JUNE 8, 1911.

1,094,686, Patented Apr. 28, 1914.

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Witnesses Inventor J/u Y Attorneys COLUMBIA PLANOGRAPH 60.,WAsHlNG'NN. n. c.

A. G. STAPEL.

SBGTIONAL HOT AIR FURNACE. APPLICATION FILED mm; a, 1911.

1,094,686. Patented Apr. 28, 1914.

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Witnesses Inventor r Attorneys COLUMBIA PLANOGRAPH c0.,wAsH|Nu1joN. D. C.

ADOLF G. STAPEL, OF MONTGOMERY, ALABAMA.

SECTIONAL HOT-AIR FURNACE.

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Specification of Letters Patent.

Application filed June 8, 1911.

Patented Apr. 28, 1914-.

Serial No. 631,964.

To all whom it may concern Be it known that I, ADoLr G. STAPEL, a citizen of the United States, residing at ll'lontgomery, in the county of Montgomery and State of Alabama, have invented a new and useful Sectional Hot-Air Furnace, of which the following is a specification.

The present invention relates to improvements in sectional hot air furnaces, one object of the. invention being the provision of a furnace, which is composed of a plurality of similarly shaped sections detachably connected together, whereby the longitudinal area of the furnace may be increased or decreased, proportionately to the grate surface.

A further object of the invention is the provision of a hot air furnace, composed of a plurality of sections detachably connected together, each of said sections comprising its respective part of the fire box, ash pit and radiating fines and main flue, so that when the sections are properly positioned in the outer shell, a maximum heating surface is presented to the air within the shell so that an exceedingly efficient furnace is the result.

\Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawingsFigure 1 is a perspective view of a complete furnace embodying the present invention, a greater portion of the outer shell thereof being removed to show the exterior detailed construction of the sections. Fig. 2 is a sectional View of one of the sections per 86. Fig. 3 is a longitudinal section through three sections and the front and rear plates of the furnace. Fig, a is a view in elevation of the front plate of the forward section. Fig. 5 is a similar view of the rear plate of the rear section. Fig. (3 is a detail sectional view of one of the side walls of the upper portion of a section. Fig. 7 is a cross section through a portion of the ash pit member of one of the sections. Fig. 8 is a side elevation of the same.

Referring to the drawings, the numeral 1 designates the base or any proper support for the furnace, which has upstanding therefrom, the front frame 2 and the rear frame 3 which supports the casing or shell B, the frame 2 being provided with the sheet metal plate A while the frame 3 carries a sheet metal plate 5. The shell B, and sheet metal plates 4 and 5 constitute the outer casing of the furnace and incase the fuel container and heat radiating members, as will presently appear. The sheet metal plate A is provided with the draft and cleanout door 6 and with the fuel inlet door 7, there being provided a door 8 which constitutes the clean-out door for the hot air blast tube, as will presently appear. A clean-out tube 9 in communication with the smoke fine 13 is provided.

The fuel combustion and heat radiating members of this furnace, are disposed as shown in Figs. 1 and 3, the cast-metal end plate A, shown in Fig. A, being the sealing member for the first member of the furnace, as clearly shown in Figs. 1 and 3 and provided with the fuel receiving opening 23, the air blast tube opening 2 1 and the cleanout opening 25, which as shown in Fig. 3, is closed. The cast metal rear plate A, as clearly shown in Fig. 5 seals the rear end member or section of the furnace, as clearly shown in Fig. 3, and is provided with the flue opening 26. The lower section 22 is disposed at the lower end of the plate A, as clearly shown in Fig. 3, and is provided with an aperture adjacent the ash pit of the furnace, while the plate 22 of the rear plate A seals the rear end of the ash pit.

Each one of the intermediate sections of the heating portion of the furnace, includes a lower ash pit member 12, having the connecting flanges 12", and the longitudinally disposed shouldered rims 12 for the reception of the lower depending vertical walls 16 of the upper portion of the section. The walls 16, as clearly shown in Figs. 2 and 6, are inclined from the point 16 upwardly to the entrance to the flue B, there being a plurality, preferably three, of outstanding flanges 16 formed integral with the inclined portion of the wall, the wall between the flanges being provided with the two openings 17 and 17 which constitute the inlet and outlet for the products of combustion as clearly indicated by the arrows in Fig. 2. As shown there are six radiators 17 to each section, there being three at each side. Each radiator 17 is i i-M1 adapted to surround its respective flange 16, the upper and lower tie rods 18 being connected. to the respecti *e upper and lower outer edges oi each radiator 17 and to the outstanding flanges 1(3 and 18 respectively. Each radiator ll is a hollow ast metal member with the inner end. open and slightly tlared so as to neatly fit upon its respective flange 16 and thus provide a chamber having the inlet 17' and the outlet 17.

Carried by each member or section of the furnace and disposed to extend inclinedly downwardly into each radiator 17, as clearly shown in Fig. 2, is a deflector or diaph 'agni 19, the uppe end of which rests upon the solid portion of the inclined wall at a point adjacent to the lower edge of the upper outlet opening 17 and to the adjacent portion ot the tlange 16. This detlector or diaphragm 19 may be secured in place in any desired manner or may be cast integral with the radiator 1'7, or the wall of the section.

1i tire box lining let is disposed adjacentthe walls 16 of each section of the furnace and forms with the grate 3, the lire box or fuel receptacle which is tilled through the door 7 and opening 23 of the forward end or" the casing in the front wall 3t ot the tarnace. The bar 15 is connected to the bars oi the grate 13 so thatthe bars of the grate may be operate l.

in inwardly projecting ledge Z) is formed adjacent the lower edge of each outlet opening 7, as clearly illustrated in Figs. and (l, for the reception of the top 21 ot the air blast tube of the furnace, the peritorated plate 21 forming the bottom of the line and providing a means whereby air admitted at either end of the tube which is adjacent the opening Q-Il oi. the front plate It, will be deflected downwardly through the pert i ratitms of the plate 2-1" into ti dome of the combustion chamber formed a the sections above the inlet openings 17 thereof.

The supply oft air to the ash pit and to the hot air blast tube may be regulated. in any desired manner. By positioning the blast tube, as shown, it is evident that air admitted therein and projected at the top or dome of the combustion chamber, thus greatly assists in the complete combustion oi? the coal or soot, especially when the furnace is used to burn soit coal. It might be said that the air blast tube only operated whei soft C(ltl. is being burned, the door at that time beingleft open, the same when hard coal is used being closed, as shown in Fig. 1.

The lower inclined walls ot the sine line B are so formed, that any collection of soot within the flue will. be directed down vardly upon the upper surface of the Jliangular top El oi. the air blast tube and finally upon the deflectors 10, whose all e is bustion. clninrbcr, a diaph *agm disposed outwardly and downwardly from the top ot the combustion chamber into each laterally extending cl amber, said diaphaigm forming within each laterally extending chamber, a circnito is route for the products of combustion passing from the combustion chamber, and a line into which all of said late "ally extending chambers empty.

.lfn a sectional furnace, the combination of an ash pit, a lire box, a combustion chamher having a domed central portion, a hot air blast tube entering said combustion chamber from the dome thereof, a line, a series of late 'ally extending chambers forming a communication between the combustion chamber and the line, and. a division wall within each laterally extending chamber proyicing a deflecting means to dellcct the prod nets of combustion downwardly and out- 'ardly bct'oro entering the title.

3. In a sectional furnace, the combination at an ash pit, a fire box, a combustion chamber havino' a dome oortion. a hot air blast tube entering into said dome portion at the apex thereof, a fine. chambers forming communication with the combustion chamber and the flue and extending laterally from the combustion chan'iber, and a deflecting diaphragm extending outwardly and downwardly within each lateral chamber.

in a furnace, the combination of an ash pit, a lire box, a combustion chamber provided with a reduced dome, a hot: air blast tube located in the dome thereof and in communication with the top ot the combustion chamber, a tlue, a series oi. laterally extending and upwardly inclined chambers, there being an equal number upon each side of ane. in communica'ion with the combustion chambe, and a diaphragm extending downwardly an'l outwardly from the top of the combustion chambe into each later: l. chamher, and terminating at a point below the center line of its respective laterally extending chamber abort: the bottom and out of contact with the outer w: ll thereof.

5. in a iri'rce, a series of sections, each one of said sections being provided with its portion of a lire box, a combustion chamber, two oppositely disposed and laterally extending chambers in communication with the combustion chamber, a flue in communication with both of said laterally extending chambers, and a partition in each of said laterally extending chambers extending from the top of the combustion chamber outwardly to provide two oppositely extending wings to cause the products of com bustion to circulate through substantially the full area of the respective laterally tending chambers when passing from the combustion chamber to the flue.

6. In a furnace, the combination of a series of sections, each section carrying its portion of an ash pit, a fire box, a combustion chamber, a pair of oppositely disposed and laterally extending chambers in communication at their lower ends with the combustion chamber, a flue common to both of the laterally extending chambers and in communication therewith at their upper ends, and a diaphragm mounted in each laterally extending chamber to provide a circuitous route for the products of combustion passing from opposite sides of the combustion chamber to opposite sides of the flue.

T. In a sectional furnace, the combination of an ash pit, a fire box, a combustion chamber provided with a reduced dome, a lateral chamber upon each side of the combustion chamber and in communication at its lower end therewith, a diaphragm mounted in each lateral chamber, the upper portion of the wall of the combustion chamber providing a lower inlet and an upper outlet in each of said lateral chambers, and a flue in communication with the upper ends of each lateral chamber.

S. A section of a hot air furnace, having a portion of an ash pit, fire box, and combustion chamber, a pair of laterally extending and inclined chambers in communication with the combustion chamber at the bottom thereof and disposed to have the respective outer and lower walls thereof inclined, a diaphragm disposed upon the upper end of the combustion chamber and extending downwardly and toward the lower portion of each of the respective laterally extending chambers and terminating at a point to provide a passage-way around the lower end thereof and the bottom of its respective laterally extending chamber, and a flue common to all of said sections.

9. A section for a hot air furnace, having an ash pit, a lire box, a combustion chamber provided with a dome, a hot air blast tube in communication with the dome thereof and projecting upwardly, a fine directly above said hot air blast tube, the lower walls of the flue being inclined toward the combustion chamber, a series of laterally extending chambers in communication with the combustion chamber and flue, and a deflector disposed downwardly and outwardly from the blast tube into each laterally extending chamber and dividing each of said chambers into two communicating compartments.

10. A section for a sectional furnace, comprising a main member providing a com bustion chamber and a fine in direct communication, a hot air blast tube crowning the combustion chamber, said main member being provided with openings above and below said hot air blast tube, and laterally extending chambers forming communication between the combustion chamber and flue.

11. A section for a sectional hot air fur nace, comprising a main member providing the fire box, combustion chamber and fine, said main member being provided with a series of apertures in its side walls, a series of laterally extending chambers connected to said member and over said apertures thereof to form communication with the combustion chamber and flue through said apertures and the laterally extending chambers, and inclinedly disposed diaphragms, one to each of said lateral chambers dividing its respective chamber into two communieating compartments through which the products of combustion pass before entering the flue.

12. In a sectional furnace, the combination of an ash pit, a fire box, a combustion chamber provided with lateral openings therefrom and with a central opening in the apex thereof, a hot air blast tube closing the opening in the apex and in communication with the upper portion of the combustion chamber, a series of laterally projecting chambers having their lower ends in communication with the combustion chamber, and downwardly inclined plat-es connected to the top of the combustion chamber and extending into the lateral chambers and providing a space between their ends and the outer walls of the lateral chambers, and a flue in communication with the upper end of said laterally projecting chambers.

13. In a hot air sectional furnace, the combination of an ash pit, a fire box, a sectional grate therein, a combustion chamber, said combustion chamber being provided with a dome having openings at its lower edge and with a central longitudinal opening therein, a hot air blast tube bridging said central longitudinal opening and in communication with the dome of the combustion chamber, a flue, a series of laterally extending radiator chambers in communication with the lower openings of the combustion chamber and on each side thereof, and having their upper ends in communication with the flue, and plates extending into each of said laterally extending chambers and below the top of the opening from the combustion chamber therein, to cause the products of combustion to be deflected downwardly from the dome of the combustion chamber and be caused to pass through the laterally extending chambers before entering the flue.

14;. in a furnace, the combination of an ash pit, a tire box, a combustion chamber having a tapered closed upper end, and having laterally extending openings in its sides near the the box, a series of laterally 6X- tending radiator chambers in communication with the combustion chamber, inclined plates mounted therein with their lower ends extending below the top oi? the openings into said chambers, said inclined plates each being ojt such a length as to divide the respective chambers into two communicating eompartments, whereby the products of combustion are led from the combustion chamber throughout substantially the entire area of each respective laterally extending chamber, and a line common to the upper ends of all of said laterally extending chambers.

15. In a furnace, the combination of an ash pit a tire box, a combustion chamber having a tapered dome, a fine directly above said dome provided with inclined Walls lead ing from the dome of said combustion chamber, and oppositely extending radiator chambers in communication at their lower ends with the combustion chamber and in communication with the flue at their upper ends, and a diaphragm mounted in each of said laterally extending chambers and disposed to deflect the products of combustion from the combustion chamber downwardly into the lower portions of the respective laterally extending chambers to provide a circuitous route therefor from the combustion chamber to the flue.

In testimony that I claim the foregoing as my own, I have hereto atlixed my signature in the presence of tWo Witnesses.

ADOLF G. STAPEL.

Witnesses F. E. STAPEL, S. H. OATER.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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