US2274450A - Fuel distributor - Google Patents

Description

Feb 24, 1942. J. J. KRESS 2,274,450

FUEL DISTRIBUTOR Filed July 26, 1958 2 Sheets-Sheet 1' INVENTOR Joseph J Kress Y f/jaway Mr% ATTORNEYS Feb. 24, 1942. J. .1. KRESS FUEL DISTRIBUTOR Filed July 26, 1938 2 Sheets-Sheet 2 INVENTOR Joseph J Kress IfIIIIIIIII S BY W A ORNEYS Patented Feb. 24, 1942 FUEL ms'rnnso'ron Joseph J. Kress, Erie, Pa., assignor to The Standard Stoker Company, Incorporated, a corporation of .Delaware Application July 26, 1938, Serial No. 221,303

6 Claims.

This invention relates to stokers of the type delivering fuel from a source of supply to a distributing means at the firing opening in a furnace wall.

An object of the invention is to provide a stoker mechanism of the type described for uniformly andcontinuously distributing fuel over all parts of the firebed in the firebox.

Another object of the invention is to provide in a stoker of the type described, means for varying the relative amounts of fuel delivered onto various parts of a fuel receiving plate, from which plate the fuel is projected over various parts of the firebed in desired quantities.

Another object of the invention is to provide convenientlyadjustable deflecting means at the delivery end of a stoker arranged to act on the fuel prior to its delivery into the zone of action Fig. 2 is a view in elevation looking through the firing opening in the upright wall from within' the firebox, showing the device of the .in-

vention applied thereto, parts being broken away and shown in section; and

Fig. 3 is a sectional view taken on the irregula line 3-3 of Fig. 1. p

For purposes of illustration the invention has been shown as applied to thebackwall of a locomotive firebox, but it will be apparent that it is equally applicable to furnaces of other types.

In thedrawings a boiler firebox is shown at It, provided with a backwall II .having a firing opening I2, 'therethrough. Fuel is delivered to the firing opening from a source of fuel supply by a stoker, indicated generally by the numeral [3. Only so much of the stoker as is essential to a complete understanding of the invention is. shown, the rearward portion of the stoker being of any suitable construction well known in the art. I

A housing l4 embraces the firing opening and is rigidly secured to the backwall H by means extending through the flange l5. The rear 'wall of the housing I4 is provided with an opening 1-6 in substantial register with the firing opening l2 either 'side of the fireboxand a'conventional form of firedoor l1 forms a closure for the opening l-B. Communicating with the bottom of the housing I4 is a downwardly and rearwa-rdly extending tubular portion l8, preferably formed integral with the housing 14. A conduit 19 communicates with the lower end of the tubular portion l8 and is rigidly secured thereto by means of bolts 20 passing through the flanges 21 and 22 extending circumferentially of the adjacent ends of the tubular portion I8 and conduit l9, respectively. The conduit [9, tubular portion 18 and housing 14 constitute a fuel feed conduit through which fuel is advanced by ascrew conveyor 23.

The housing I 4 and tubular portion [8 is recessed or cut away adjacent the lower marginal edge of the firing opening l2 to receive the chambered jet table 24 which forms a continuation .of the bottom of the tubular portion 18 and is provided at its forward end with jet openings 25 .in the upright front face '26. The front face 26 comprises a central face portion 21 and side face portions 28 and 29 sloping outwardly and rearwardly from the ends of the central face portion 21. The jet openings 25 are drilled substantially perpendicular .to the :face portions in which they are :formed, so that the jet openings in the side face portions 28 and 29 are directed toward the side portions of the firebox while the jet openings in the central face portion 21 are directed across the central portion of the fire- .3! and the jet table ledge 30 prevent forward movement of the table 31 with respect to the jet table "24. The upper surface'of the distributing table 31 is provided with upstanding ribs 34 and 34a curving forwardly and laterally away from each other and increasing in height from their respective rearward ends to their forward ends. The ribs v34 and 34a serve to deflect a portion of the fuel projected across the table 3| by the pressure fluid emitted from the jet openings 25 toward the rear corners of the firebox.

corner than to the other side or rear corner of the firebox. For this purpose I have provided a simple, practical and efficient means that is conveniently adjustable without disturbing or dismantling any part of the stoker.

In each lower side of the housing l4 and extending along the sides of the tubular portion l8 are formed longitudinally extending inclined seats or recesses and 36. cesses are arcuate shaped in transverse crosssection and the upper surface of th jet head 24 on each side of the central face 21 is provided with similar concave recesses 3'! and 38 forming continuations of the seats 35 and 36, respectively.

Cylindrical members 39 and 48 are rotatably mounted in the seats 35 and 36, respectively, and extend forwardly to approximately the plane of the central front face 21 of the jet head 24. The cylindrical members 39 and 40 are formed with facets 4| and 42 respectively, forming with the top surface of the jet head 24 a passage for the fuel. By rotating the cylindrical members 39 and 40 about their respective axes, their faceted portions can be made to cover the concave recesses 3'! and 33 completely or uncover them a desired amount. The cylindrical members 39 and 40 are provided with rearwardly extending stems 43 and 44, respectively, extending exteriorly of the stoker and by turning the knobs 45 and 48 mounted on the projecting portion of the stems 43 and 44, respectively, the cylindrical members 39 and 40 can be adjusted to any desired position.

With the cylindrical member 39 in the position shown in Figs. 2 and 3, the recess 31 is completely cut off, so that only small amounts of fuel will fall on the distributing table 3i in front of the jet openings in the face 28 of the jet table 24 and consequently a relatively small amount of fuel will be projected to the right side and rear corner of the firebox. With the cylindrical member 40 in the position shown in Figs. 2 and 3, the faceted portion thereof uncovers a part of the recess 38, so that fuel received in the recess falls on the distributing table 3| in front of the jet openings in the face 29 of the jet table 24 and is projected across the distributing table 3| and deflected by the rib 34a to the left side and rear corner of the firebox. Thus by adjusting the cylindrical members 39 and 43 to uncover more or less of the recesses 31 and 38, more or less fuel can be delivered to either side and rear corner of the firebox as required.

I claim:

1. In combination, a firebox having a wall with an opening therein a stoker fuel feeding conduit having its discharge end communicating with said opening, means for advancing fuel through said conduit, a pair of laterally spaced longitudinally elongated concave recesses formed in the lower portion of said conduit adjacent its discharge end,.

a longitudinally extending deflector member disposed in each of said recesses, said deflector members forming side walls of said conduit, said walls having substantially upright forward edges and longitudinally extending upper edges, said forward edges defining an outlet opening, said Walls defining in the direction of extent of the deflectors an unobstructed path of travel whereby substantially all of the fuel is confined between said walls and passes between said forward edges, a portion of said deflector members having a surface concentric with said concave recess, and means for rotating said deflector members about These seats or renecessary to deliver more fuel to one side or rear their longitudinal axes to expose a portion of said concave recesses.

2. In combination, a firebox having a wall with an opening therein, a stoker fuel feeding conduit having its discharge end in communication with said opening, means for advancing fuel through said conduit, a fuel distributor including a jet head forming a floor portion of said conduit at its discharge end, a longitudinally elongated concave recess formed in the top surface of said jet head adjacent each lateral extremity thereof, a longitudinally extending deflector member disposed in each of said recesses, said deflector members forming side walls of said conduit, said walls having substantially upright forward edges and longitudinally extending upper edges, said forward edges defining an outlet opening, said walls defining in the direction of extent of the deflectors an unobstructed path of travel whereby substantially all of the fuel is confined between said-walls and passes between said forward edges, each of said deflectors being mounted for rotation about a longitudinally extending axis to expose said recesses a desired extent the exposed portions of said recesses forming fuel supporting parts of the passage along which the fuel is advanced to the discharge end of the conduit.

3. In combination, a firebox having a wall with an opening therein, a stoker fuel feeding conduit having its discharge end communicating with said opening, means for advancing fuel through said conduit, a pair of laterally spaced longitudinally elongated concave recesses formed in the lower portion of said conduit adjacent its discharge end, a longitudinally extending deflector member disposed in each of said recesses, said deflector members spaced a substantial distance apart throughout their longitudinal extent and being generally cylindrical in shape, a portion of the curved surface of each of said deflector members being cut away forming facets, said facets forming with the bottom wall of said conduit a trough-like passage for the fuel, and means for rotating said deflector members about their longitudinal axes to expose a portion of said concave recesses.

4. In combination, a firebox having a wall with an opening therein, a stoker fuel feeding conduit having its discharge end communication with said firing opening, means for advancing fuel through said conduit, a fuel distributor jet head forming a floor portion of said conduit at its discharge end, a longitudinally elongated concave recess formed in the top surface of said jet head adjacent each lateral extremity thereof, a deflector member disposed in each-of said recesses, said deflector members being generally cylindrical in shape, a portion of the curved surface of each of said deflector members being cut away forming facets, 'saidfacets forming with the top surface of said jet head a passage for the fuel, and means for rotating said deflector members about their longitudinal axes to expose a portion of said concave recesses. I

5. In combination, a firebox having a wall with an opening therein, a stoker fuel feeding conduit having its discharge end communicating with'said opening, means for advancing fuel through said conduit, a fuel distributor jet head forming a floor portion of said conduit at its discharge end, said head having a front face provided with a plurality of jet openings, a distributor plate extending forward from said face below said jet openings, a longitudinally elongated concave recess-formed in the'top surface of said jet head adjacent each an opening therein, a stoker fuel feeding conduit having its discharge end communicating with said v opening, means for advancing fuel through said conduit, a pair of laterally spaced longitudinally elongated concave recesses formed in the lower portion of said conduit adjacent its discharge end, a longitudinally extending deflector member disposed in each of said recesses, said deflector members having their respective adjacent faces diverging toward the discharge end of the conduit and forming side Walls of said conduit defining therebetween the path of travel of substantially all the fuel through the conduit, and means for rotating said deflector members about their longitudinal axes to expose a portion of said concave recesses.

JOSEPH J. KRESS.

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