US1132875A - Furnace. - Google Patents

Description

E. PEMBERTON.

FURNACE APPLICATION FILED JUNE 8,1914.

Patented Mar. 23, 1915.

2 SHEETS-SHEET 1.

HVVENTUH [7/776/ /%/7z&a/ki/7 W A TTOH/VEY MUTNESSES:

E. PEMBERTON.

FURNACE.

APPLICATION FILED JUNE 8,1914.

Patented Mar. 23, 1915.

2 SHEETS-SHEET 2.

A TTORIV E Y sists' in a furnace that is ELMER PEMBERTON, OF SEATTLE, WASHINGTON. 1

FURNACE.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed Julie 8, 1914. Serial No. 843,615.

To all whom it may concern:

Be it known that I, ELMER PEMBERTON, citizen of the United States, residing at Seattle, in the county of Kings and State of Washington, have invented a certain new and useful Improvement in Furnaces, of which the following is a specification.

My invention relates to improvements in furnaces, and the object of my improvement is to provide a furnace that shall be simple in its plan of construction, efficient and economical in its operation and which shall be adapted to be'embod'ied in the heating and ventilating system of a buildin I accomplish this object by structures i lustrated in the accompanying drawings in ,which Figure 1 is a view in vertical section, on broken line B, B of F ig. 2, of a furnace embodying my invention, Fig. 2 is a view of the same in cross-section on broken'li ne A, A of Fig. 1, and Fig. 3 illustrates my invention as embodied in the heating and 'ventilating system of a building.

In a general way my i rovided with a smoke-pipe in its upper e'n and with a firebox in its lower end in which fire-box is a grate upon which fuel may rest, and such furnace is further provided with a plurality of return pipes that communicate with its top portion and thence extend downwardly on its outside and thence inwardly to terminate at a point below the grate, thus to conduct air and gases from the top portion of the furnace and deliver such air and gases at a pointbelow the grate in order that such air and gases may again pass upwardly throughthe grate to help feed combustion and more nearly consume all smoke. Like reference numerals indicate like parts throughout the drawings.

Referring to Fig. 1, wherein I have shown by a view in vertical section a furnace embodying my invention, 5 is an outer casing of such furnace and (Sis an inner casing or combustion chamber that is disposed'within the casing 5 and spaced therefrom to pro vide a passageway 7 for heated air therebetween, such inner casing 6 being provided near its bottom portion with a fire-box 8 having a grate 9, of common form of con-.

struction, disposed in the bottom, portion thereof.

mprovement con- The inner casing 6 is provided, at a point near its top, with an opening 10 through which it communicates with a smoke pipe 11 that extends to and into a flue or chimney? 12 through which smoke and gases may be carried ed, and such casing 6 is further provided with a plurality of pipes 13 that are connected with the upper portion of such casing and thence pass downwardly on the outside thereof to a point below the grate 9 and thence upwardly to deliver air into the space l-it immediately below the grate 9.

The top end of the outer casing 5 is provided with a plurality of openings 15 through which it may communicate with a plurality of heat conductingpipes 16 that extend'to various rooms of the building, as more clearly shown in Fig. 3, such heating pipes 16 preferably being connected with heat conducting passageways 17 that are provided in the partition walls 18 of the building whereby heated air may be conducted upwardly and delivered through; an inlet opening 19 into a room 20 at a point near its ceiling such heated air then circulating about the room 20, as more clearly illustrated by darts in Fig. 1, until it has become cool and foul and then being drawn out through a return pipe 21 that communicateswith the lower portion of such room near the side opposite to the inlet 19 and delivered into the space 14 below the grate 9 tobe drawn upwardly through such grate to pass outwardly through the smoke pipe 11, the return pipe 21 being directly connected with the smoke pipe 11, at a point outside of the furnace by a pipe 22 that is provided with a damper 23 by which the area of the opening of such pipe may be regulated to permit any desired portion of the air that is passing through the pipe 21 to pass directly into the smoke pipe 11 instead of passing through the furnace and thence into such smoke pipe.

For the purpose of admitting fresh air to the space 7 between the combustion chamber 6 and the outer casing 5 I have provided air conducting pipes 24 that may extend outwardly through the side of the building to.

a Source of fresh .air.

The operation of my furnace as hereinshown, may be described as follows, it be-, ingunderstood that the principles of operation embodied therein may be carried out by devices that differ widely from the devices heroin shown without departing from the spirit of my invention: The furnace shown in Fig. 1, may be setup in the basement or lower portion of a building and connected with the rooms above, as illustrated in Fig. 3, and a fire may be kindled in the firebox 8 of such furnace such fire drawing in air to feed combustion through the pipes 21 that communicate with the various rooms and such air together with the smoke and gases may pass outwardly through the smoke pipe 11 and chimney 12 or it may pass downwardly through the pipes 13 and then again upwardly through the grate 9 and thence outwardly through such chimney 12. As the fire burns, the air in the passageway 7 becomes heated and rises in the pipes 16 andpassageways l7 and issues from the openings 19 into the rooms 20 of the building, the pipes'2l, by removing air from such rooms 20, creates a suction in the pipes 16 and passageways 17 and thus tend to aid in drawing the heated air into the rooms 20 to insure a constant change of air therein and such rooms together with the chimney 12 and the furnace and pipes connected therewith from a continuous passageway whereby fresh, pure air may. constantly be drawn through the pipes a into and through the passageway 7 where it warmed, thence through the pipes 16 and passageways 17 into the rooms 20to warm and ventilate such rooms 20 and thencethrough the pipe 21 into the furnace to feed combustion and thence out of the chimney-12, such chimney 12 acting as ,a siphon to draw air constantly through the furnace and through the rooms and the pipes connected therewith. The suction due to the draft of the chimney is exerted with equal force at the top and bottom end'of each of the pipes 13 and such pipes are located on the outside of the combustion chamber 6, as more clearly shown in Fig. 1,

so that the air contained therein is slightly cooler than the air in the combustion chamber 6 and tends to settle and pass out through the lowermost end of suchpipes 13 thus creating a constant return flow of heated air from the top of the furnace to a point below the grate 9 which heated air, and the combustible gases that it carries with it, materially aids in the combustion of the fuel upon the grate 9 and causes such fuel to burn up much more clearly than it would if I such pipes were not present. When the arrangement of pipes shown in Fig. 3, is used in connection with my im proved form of furnace, the temperature of the rooms 20 serves automatically to regulate the draft through the furnace, the air in such rooms settling faster through the pipes 21 and creating a stronger draft as it becomes warmer, there being provided between each pipe 21 and the smoke pipe 11,

a by-pass formed by the pipe 22 that is adapted to be opened or closed by a damper 23 whereby-if the fire lll'tlle furnace burns too fast the draft through the pipes 21 may be reduced by opening such damper sufliciently to permit a portion of the air passing through the pipes 21 to flow directly intothe smoke pipe 11. Even though there is no fire in the furnace the structure shown in Fig. 3, will act as a ventilator for the rooms 20, the air following the same course as it would if there were a fire in the furnace.

\Vhile I have illustrated my invention as applied to a furnace for heating a building it is obvious that passageways equivalent to the pipes 13 and adapted to perform the samefunction as the pipes 13 may be applied to any other kind of furnace or generator of heat and many changes may be made in the shape and form of various parts embodied in my device Without departing from the spirit of my invention or sacrificin any of its advantages. 7

' at I claim is: i

1. In a furnace of the class described, the combination with a casing, ofa grate pro-' vided in said casing to form a combustion chamber in the upper portion and an air chamber in the lower portion thereof, pipes provided on the outside of said casing, said pipes being connected to the top portion of said combustion chamber and with said products of combustion chamber whereby air may flow therethrough, and other pipes. disposed to conduct air into said air chamber.

2. In a furnace of the class described, the combination with an inner casing having a grate provided therein and disposed to form a combustion chamber in the upper portion and an air-chamber in the lower portion of such casing, of an outer casing disposed to surround said inner casing and spaced therefrom, pipes disposed in the space between said two casings and connecting the top portion of said combustion chamber with said air chamber to convey products of combustion thereto, heat conducting pipes connected with the top portion of said outer casing, and air pipes to deliver fresh air to said air chamber.

3. In a furnace of the class described, the combination with an inner casing having a grate provided therein to form a combustion chamber in the upper portion and an air chamber in the lower portion thereof, of a smoke pipe connected with the upper portion of said inner casing. air pipes connect ed with the upperportion of said casing and disposed to pass downwardly along the outside of said casing to connect with said casing at a point below said grate to convey products of combustion thereto, an outer casing disposed about said inner casing and said air pipes, heat conducting pipes rounected with the top portion of said outer casing, and outside air pipes for admitting fresh air to the lower portion of said outer casing.

ELMER PEMBERTON.

Witnesses A. HASKINS, FRANK WARREN.

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