US1955149A - Combination heater and gas or electric range - Google Patents

Description

April 17, 1934.

A. F. SCHI EFFER COMBINATION HEATER AND GAS OR ELECTRIC RANGE 5 Sheets-Sheet l A TTORNEY.

'April 17, 1934 A. F. SCHIEFFER COMBINATION HEATER AND GAS 0R ELECTRIC RANGE I '3 Sheets-Sheet 2 v Filed April 21. 1932 I N VEN TOR. E fame/fir A TTORNEY.

April 17, 1934. A. F. SCHIEFFER Filed April 21. 1932 3 Sheets-Sheet 3 m m x A r ATTORNEY.

Patented Apr. 1 7, 1934 COMBINATION HEATER AND GAS OR ELECTRIC RANGE Albert F. Schiefier, Milwaukee, Wis.,- assignor to The Fuller-Warren Company, Milwaukee, Wis., a corporation of Wisconsin Application April 21, 1932', Serial No. 606,635

2 Claims.

This invention relates to certain new and useful improvements in combination heater and gas or electric ranges and has as an object to provide improved means for increasing the efiiciency of theheater;

Another object of this invention resides in the provision of vmeans for inducing a positive circulation of air through the range.

Another. object of this invention resides in the provision of an air circulating medium which is built in and forms an integralpart of a combined heater and gas or electric range.

A more specific object of this invention resides in the provision of an air circulating unit located between a coal or wood burning heater and a gas or electric range, so connected therewith as to form one unitary structure.

And a further object of this invention resides in the provision of a'flat chamber alongside the heater unit for conducting the heated gases and products of combustion from the heater unit to the exhaust flue.

With the above and other objects in view which will appear as the description proceeds, my invention resides in the novel construction, combination andarrangement of parts substantially as hereinafter described 'and more particularly defined by the appended claims, it being understood that such' changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my inyention constructed according to the best mode I have so 'far devised for the practical application of the and in which:

Figure 1 is a perspective view of a combined heater and gas range embodying this invention;

Figure 2 is a front elevation of the combined heater and range with portions broken away and in section to illustrate structural details;

' Figure 3 is a cross section view taken through Fig. 2 on the plane of theline 3-3;

Figure 4 is a detail section view taken on the plane of the line 4-4 of Fig. 3.

Referring now to the accompanying drawings in which like numerals indicate like parts throughout the several views, the numeral 5 generally designates a combination heater and range which comprises a heater unit 6, a gas or electric range unit 7, and an air heating and circulating unit 8. The air circulating unit 8 is disposed between the heater and range units and together the three units form a unitary strucprinciples thereof,

as the range unit forms no part of this invention,

a detailed illustration and description thereof is unnecessary.

The heater unit 6, is of substantially conventional construction, and comprises a fire chamber 12 disposed above an ash chamber 13. The fire chamber 12 is defined by side walls 14 and end walls 15, but one being shown. The ash chamber 13 is defined by a side wall 16 which is preferably a casting and extends throughout the entire height of the heater unit; front and rear walls 17 and 18 respectively which are also preferably castings of the same height as the wall 16, and extend across the front and rear of the air heating and circulating unit; a side wall 19; and a bottom 20 both preferably formed of sheet metal.

The upper portion 22 of the side wall 19 is directed at an angle to lie parallel to the adjacent side wall 14 of the'fire chamber and terminates beneath an overhanging ledge 23 on the said side wall-14. A space is thus defined between the fire chamber side wall 14 and the angularly directed upper portion 22 of the wall 19 through which heated air passes upwardly from the ash chamber along the wall 19 to effect a heat transfer to the air contacting with the outside surface of the wall 19 for a purpose to be later described.

Directly above the fire chamber 12 is a conventional stove top 24 upon which the utensils and articles to be heated are placed, and which, as is customary, is provided with removable lids 25. The stove top 24 also extends across the air circulating unit 8 and forms substantially a continuation of the burner top of the range. That portion of the top 24 disposed above the air circulating unit is also provided with removable lids 25.

An exhaust flue chamber 26 is positioned at the upper rear portion of the air circulating unit in line with the top of the fire chamber, but to one side thereof. This location of the exhaust flue causes the products of combustion "and the heated gases from the fire chamber 12 to pass laterally toward and over the upper portion of the air circulating unit. As best shown in Fig.

3, the exhaust flue chamber 26 comprises a boxlike enclosure secured to the rear wall 18 with its open side aligned with upper and lower openings 27 and 28, respectively, formed in the rear wall 18. The closed top 29 of the exhaust flue chamber has provisions for the attachment of a smoke pipe 30 as is customary.

The upper opening 27 leading to the exhaust flue chamber 26 is close to the adjacent end of the fire chamber and when open, affords a direct passage for the heated air and products of combustion and thus affords maximum draft for a fire burning in the fire chamber 12.

The opening 27, however, may be closed by a damper or valve 31, which is mounted for swin ing movement to and from a position closing the opening 27 by a trunnion 32 projecting from one end of the damper and journalled in a bearing33 fixed to the outside surface of the wall 18 within the exhaust flue chamber 26, and a second trunnion 34 projecting from the opposite lower portion of the damper and journalled in a slot formed in the edge of the adjacent side wall of the exhaust flue chamber 26 and engaging the wall 18. The trunnion 34 carries a lever arm 35 at its extreme outer end and an actuating handle or link 36 having its ower end pivotally connected with the arm 35 an extended upwardly through a suitable opening in the top 24, provides means for actuating the damper to and from closed position.

It is observed that the damper is not flat, but is of such shape that its weight is so distributed with respect to its pivotal mounting, that gravity holds it in either closed or open position.

Depression of the actuating handle or link 36 obviously swings the damper to its open position which is defined by the engagement of the damper with a stop 18 carried by the wall 18.

Beneath the opening 27 is an extended flue chamber 37 which extends transversely across the central portion of the air circulating unit 8 and is substantially coextensive with the heating unit. This flue chamber is defined by a side wall 38, the front and rear walls 17 and 18, a bottom'39 and a side wall 40, the upper portion of which, directly beneath the opening 27, is offset as at 41. The offset portion 41 of the side wall carries the flue chamber adjacent the burner section of the range and provides a top for an air space 42 disposed between the side wall 40 of the flue chamber and the adjacent side wall 43 of the range oven compartment.

The bottom of the air space 42 is open and the front wall 17 is cutaway to afford an outlet for air entering the space through the open bottom. Additional openings 44 leading from the space 42 may be cut in the rear wall 18.

A second air space is provided between the side wall 19 of the ash chamber and the side wall 38 of the extended flue chamber which is closed at the top by the connection of the angularly directed upper portion of the wall 19 with the upper portion of the wall 38. Like the air space 42, the bottom of the space45 is open to permit air to rise therein and the front wall 1'7 is cut away to provide an outlet for the'air which rises therein and is heated by contact with the wall 19.

The lower opening 28 entering into the exhaust flue chamber 26 communicates with the extended flue chamber 3'7 and provides an outlet for the heated gases and products of combustion when the damper 31 is closed.

The path of the heated gases and products of combustion to the exhaust flue 26 through the lower opening 28, however, is extended by the provision of a bafile 46 extending transversely across the flue chamber 37 at an incline from a point between the upper and lower openings 27 and 28 down to a point near the lower front portion of the flue chamber. The heated gases and products of combustion thus travel to substantially the extreme bottom of the flue chamber before they are permitted to rise and enter the exhaust chamber. In this manner, maximum heat transfer from the heated gases and products of combustion to the air in the spaces 42 and 45 is.

44 in the rear wall 18 and the openings in the front wall 17 to pass through perforations 47 in a front plate 48 which covers the front wall 17 across the width of the air circulating uni; 8. The perforated front wall 48 is flush with the front of the heater unit and the range unit and serves to enhancethe beauty of the structure.

Any accumulation of soot in the flue chamber 3'7- may be removed through a cleanout opening 49 at the lower portion of its front wall which is normally closed by a cover 50.

From the foregoing description taken in connection with the accompanying drawings, it will be readily apparent to those skilled in the art to which an invention of this character appertains, that novel means for increasing the efficiency of the heater unit of a combination heater and gas or electric range are provided, and that the addition of the air circulating unit for this purpose enhances the appearance of the structure.

What I claim as my invention is:

1. In a device of the character described, the combination of a heater unit, an exhaust flue chamber having an opening in one wall through which substantially direct communication is afforded between the heater unit and the exhaust flue chamber, a transverse open topped flue chamber substantially co-extensive with the heaterunit and mounted at one side thereof, said flue chamber having communication with the exhaust flue chamber, and having its open top communicating with the heater unit, and baffle means within the flue chamber for extending the path of communication between the heater unit and exhaust flue chamber.

2. In an apparatus of the character described, the combination of a heater, an exhaust flue, an air circulating unit mounted in the space adjacent the heater and comprising a transverse iue chamber communicated at its top with the heater and communicated at its rear with the exheater to afford an air space at the side of the flue chamber open at its bottom, and a perforated front wall for the air circulating unit.

ALBERT F. SCHIEFFER.

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