US1152955A - Fuel-economizer. - Google Patents

Description

J. C. LANDEFELD.

FUEL ECONOMIZER.

APPLICATION HLED JULY 23.1914.

Patented Sept. 7, 1915.

' WITNESSES.

M wa INVEN '1'OR. J30 dj /mvzzaz Maw ATTORNEY.

COLUMBIA PLANOGRAFH 00., WASHINGTON n c gan, have invented a which form a part in the aiding of Combustion.

JOHN C. LANDEFELI), 0F DETROIT, MICHIGAN.

rUEL-noo'NoMIzEn.

Specification of Letters Patent.

Patented Sept. 7, 1915.

Application filed July 23, 1914. Serial No. 852,767.

To (ZZZ whom, it may concern Be it known that I, JOHN C. LANDEFELD, a citizen of the United States, residing at Detroit, county of Wayne, State of Michi certain new and useful Improvement in Fuel-Economizers, and declare the following exact description of the same, such asv will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings,

of this specification.

This invention relates to fuel economizers and smoke preventers and its object is a device for use in steam boiler furnaces or the like, in which steam jets are employed In many furnaces in which the steam jets are directed into and through flame over the fuel body, cold air is introduced directly into the furnace through the said ets, the effect of which is detrimental tending'to reduce the-temperature of the furnace and condense the steam prior to its entrance into the burn- 1ng gases. An object of this invention is means for introducing a current of heated air into the steam jets whereby combustion is accelerated, producing a'rich oxygen gas and causing a more complete consumption of the fuel. Smoke is thus practically eliminated whereby the boiler tubes do not become incrusted with carbon and enabling a greater absorption of heat-to of the tube and of the furnace.

v A structure by which these and other objects of the invention may be attained is hereinafter more fully described and claimed and shown in the accompanying drawings in which Figure 1 is a vertical section of a steam boiler furnace embodying my invention showing the air flue in section in the preferred relation with other parts of the structure. Fig. 2 is a front elevation of the fur nace door showing the opening to the air flue and general position of thesame relative to the steam jets.

Similar characters refer to similar parts throughout the drawings and specification.

The drawings are somewhat diagrammatic showing a fire-box 1 provided with a grate 2 for supporting the fuel, above which are the boiler tubes 3 connected with the orthus increasing the efiiciency to be a full, clear, and

1 erably by bolting- '12 is positioned within subjected to the influence take place through the walls dinary header 4:. The fire-box is lined with the usual fire brick indicated at 5 and 6. Through the front Wall 7 of the furnace extend steam conduitsvor jets 8, 8 etc, being greater or less in number depending upon the size of the furnace. ,Theseconduits 8 terminate in a nozzle end asupply pipe 10, in this instance shown as passing across the front of the furnace. These jets extend into the furnace above the fire door 11. The door has a rectangular opening extending nearly the full length thereof and supported in any convenient manner'upon the door, prefsubstantially U shaped air conduit 12, one end of which extends through the opening in thedoor and is provided with a damper 13 for regulating the flow of air therethrough. The opposite end of the conduit is formed with a slight curve adapted to direct the air into the steam jets as shown in Fig. 1. The air conduit is preferably made of sheet steel, as such material does not readily crack under the influence of high degrees of heat. As shown in Fig. 1 when the door llis closed the said conduit the furnace and is ofthe heat therein and air entering through the conduit from the exterior of the fire-box is made to travel in a path requiring such time interval that the air becomes highly heated prior to contact with the steam jets and the furnace gases. By this arrangement the temperature of the steam is not lowered and oxygen is added in a manner to aid combustion. The temperature of the furnace will be maintained at a high point and as the burning of the fuel is substantially complete smoke. and accumulation of soot on the boiler tube is practically prevented.

The conduit 12 may be made of various shapes, the essential characteristic being that air passing therethrough traverses a path ofsuflicient length to allow it to become heated prior to flowing into the steam jets.

The device is adaptable for use in any furnace where steam jets are employed, the form being determined by the position of the steam jets and the space that may be utilized by the conduit.

Having thus briefly described my invention its utility and mode of operation, what I 9 set at an angle adapted todirect the steam into the fire. vThe jets are connected to or riveting thereto, is a I claim and desire to secure by Letters Patent of the United States is-- 1. In a furnace, in combination with steam conduits adapted to deliver jets of steam directly into the fire at an angle, a substantially U shaped metal air conduit eX- tending into the fire box of such length that the air becomes highly heated in passing therethrough and having a discharge end positioned to direct the air through the jets in a manner to deflect the steam over the area of combustion.

2. In a furnace, the combination with steam conduits adapted to direct jets of steam at an angle into the fire, of a sheet metal air conduit extending into the firebox and adapted to direct air flowing therethrough into the jets at an angle to the direction of fiow of steam, said conduit being suspended on the door of the fire box.

3. In a furnace, the combination with steam conduits adapted to direct jets of steam at an angle into the fire, of a U shaped sheet-metal air conduit secured to the furnace door, and extending into the fire-box,

Copies of this patent may be obtained for and having a curved discharge end adapted to direct heated air over the area of combustion through the said jets.

4. In a furnace, in combination with steam conduits adapted to deliver steam through a plurality of jets directly into the fire at an angle, a substantially U shaped metal air conduit secured to the inside of the fire door and extending outwardly therethrough providing an inlet, the outlet end within the fire box being curved to direct the air through the jets in a manner to distribute the steam over the area of combustion, and a damper for controlling said in let, the length of the conduit being such that air passing therethrough becomes highly heated prior to its liberation into the fire-box.

In testimony whereof, I sign this specifi cation in the presence of two witnesses.

CHARLES E. VVIsNEn, M. S. DONOVAN.

five cents each,'by addressing the Commissioner of Patents,

Washington, D. G.

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