US1834730A - Fuel distributor - Google Patents

Description

Dec. 1, 1931. RC. PICKARD 1,834,730

FUEL DISTRIBUTOR Filed 001:. 3, 1930 2 Sheets-Sheet l A TTORNEY Patented Dec. 1, 1931 UNIT D! STATES PATENIi OFFICE FRANK o. PICKARD, or ERIE, PENNSYLVANIA, AssIeoR TO THE STANDARD STOKER COMPANY, INCORPORATED, A CORPORATION OF DELAWARE FUEL DISTRIBUTOR Application filed October 3, 1930. Serial No. 486,081.

The present invention relates to fuel distributing means, for use in connection with mechanical stokers. A

Itis an object of the invention to provide fuel distributing means arranged to spread fuel uniformly and evenly and with a substantially equal classification of coarse and fine fuel over the entire firebed area of a firebox.

It is a further object of the invention to provide a distributor plate, in a distributing means of the character described, that is simple in construction, functions efiiciently and is cheap to manufacture.

It is a further object of the invention to provide a distributor plate, in fuel distributing means of the character describedhav ing a novel configuration and design.

7 Other objects and advantages of the invention will be apparent during the course of the following description, and from the claims and drawings, in which Fig. 1 is a central longitudinal section of a portion of a locomotive with a stoker there for showing the invention in place;

Fig. 2 is a plan view of Fig. 1;

Fig. 3 is an end view taken from within the firebox through the firing opening show ing the novel distributor plate;

Fig. 4 is a vertical cross section on the line 4-4 of Fig. 2; and

Fig. 5 is an isometric view of the novel distributor plate.

For purpose of illustration my invention is shown as applied to a locomotive stoker, though it will become apparent as the description proceeds that its application is not necessarily so restricted but maybe used equally as well with other'types of stokers. V Aportion of a locomotive is designated generally at at 11 its boiler firebox provided with grates l2, and a backhead 13 with a firing opening l t'therein.

Fuel is delivered to the locomotive from a tender, not shown, by suitable stoker mechanism, only so much being illustrated and described as is essential'to a complete understanding of the invention. The forward tu bular conduit section or riser of a flexible conduit system of the stoker is designated as and extends to the firing opening 14 of the boiler. The riser 15 is carried from the backhead 13 by a supporting bracket 16 and terminates at its lower end in a spherical seat 17 receiving the ball member 18 of a conduit section 19 leading forwardly from a source of fuel supply.

From its lower end the riser 15 extends upwardly and forwardly, flaring outwardly atits upper end, and communicates with the firing opening 14 through its laterally spreading and substantially horizontal mouth portion 20. The mouth portion 20 is provided with the flanges 21 for attachment to the backhead by suitable fastening means, as by bolts, not shown. This mouth portion is formed with an upstanding wall 22 to which is detachably connected the novel distributor plate indicated as a whole at 23, which forms an extended floor portion of the riser and ex tends through the firing opening into the firebox. Rearwardly of the plate 23 and outside of the'firebox is a vertically disposed nozzle or distributorhead 24 to which pressure fluid such as steam is supplied by a desired number of supply pipes 25. The distributor head 24 is provided with openings or jets in horizontal alignment for emitting a fan shaped blast of fluid across the distributor plate 23; The jets 26 are positioned a predetermined distance above the rear of the distributor plate as will be hereinafter described. The riser conduit 15 is provided with a removable cover section 27 which may be hinged at its upper end and held in closed position by a latch 28, whereby access may be had tothe interior of the riser conduit.

The distributor plate 23 is formed of a unitary casting and its top surface is so configured and designed as to permit uniform distribution of fine and coarse fuel over all parts of the firebed area.

The central longitudinal portion of the plate 23 slopes upwardly from rear to front forming the inclined plate member 29 which affords a longer trajectory for thefuel swept thereover. The inclined plate member 29 is provided with a crown 30 extending along the longitudinal center line thereof and on either side of the crown 30 the top surface of the inclined plate member slopes gently downward forming the sloping faces 31 and 32. At the forward central portion of the inclined plate member 29 and superimposed upon the crown 30 is an upstanding V-shaped block 33 designed to deflect a portion of the fuel that would normally be delivered to the front of the fire box and spread it over the sides and front corners of the firebox. The front corners 34 and 35 of the inclined plate member 29 are slanted upwardly towards the front corners of the firebox and form with the downwardly sloping faces 31 and 32 the rearwardly diverging channels 36 and 37. I

On each side of the inclined plate member 29, there are formed inthe plate; depressions or pockets 33- and 39 sloping downwardly from rear to front. and merging rearwardly into the surface of the inclined plate member 29; The forward ends of the pockets 38- and 39 are arcuate in form curving laterally to the sides of the plate and forming with the plate the forwardly and laterally curved walls 40 andel. A portion of the fuel is intercepted by the pockets 38and 39 and is deflected'to the rear corners of the firebox by the laterally curving walls 10 and &1.

It will be observed that the jet openings 26 are disposed at a heightabove the rearv of the plate 23 so that the center and zone of highest intensity of the blast strikes the large lumps of fuel that are deposited about the crown 30 of the inclined plate member 29 approximately in line witlrtheir center of gravity whereby they are given a maximum impetusand carried to the furthermostv areas of the firebed. The lumps of fueldeposited.

onthe sloping. faces 31v and 32 of the plate member 29 on: either side of the crown 30 will be'struck by the blast at point above their center of gravity and will therefore,.not be given. as great animpetus and will not be carried: into the firebox as great a distance. Thus the farther to the sides that the fuel is deposited on the. sloping faces 31 and 32 the less will be its impetus and, by such a graduation, lump fuel is distributed uniformly and evenly over the entire firebed area. lower pressure zone or outer periphery portion of the blast willstrike the finer particles of fuel which do not require as great a projective'force as the large lumps of fuel to reachthe forward portion of the firebox.

In. operation fuel is delivered through the riser conduit 15 over the distributor head 24 onto the novel distributor plate 2 3 into the zone of action of the single pressure fluid blast issuingfrom the jet openings 26 of the distributor head. The greater portion of the fuel. is projected. forwardly across the inclined plate member 29and other portions are intercepted'by the pockets 38 and 39 and deflected to the rear corners of the firebox by the laterally curving walls 40; and 4-1. A portion of the fuel deposited about the crown.

The I tions of fuel are projected into the firebox over the sloping faces 31 and 32011 either side of the V-shaped block, with a graduated impetus as hereinbefore explained and spread fuel over the intermediate and rearward portions of the firebed.

t will be evident that. 11 have provided a novel fuel distributing means that is very simple in construction, is cheap to manufacture, and functions efficiently tov distribute fine and lump fuel evenly and uniformly over all parts of the firebed area.

I claim:

1. A fuel distributorplate for stokerscomprising an upwardly inclined section extending longitudinally forward through the central portion of said plate, an upstanding- V-shaped deflecting abutment at the forward. central portion of said inclined section, and.

lateral deflecting means formed. with said plate on either side of said inclined section.

2. A fuel distributor plate for'stokerscomprising an upwardly inclined section extending longitudinally forward through the central portion of said plate, a crown extending longitudinally along the center line thereof, the top surface of said inclined section sloping downwardly from either sideof said crown, and an upstanding V-shaped block at the forward central portion ofv said inclined section.

3. A fuel distributor plate for stoking mechanismcomprising an upwardly inclined central section, the top surface thereof hav ing a crown extending longitudinally along its center line and sloping downwardly on either side from said crown, an upstanding fuel deflecting abutment superimposed on said crown at the forward central portion of said inclined central section and pockets in said plate oneither side of said inclined central section having forwardly and laterally curving walls.

4h A fuel distributor plate for stoliing mechanism comprising an upwardly inclined central section, the top surface thereof having a crown extending longitudinally along its center line and sloping downwardly on either side from said crown, and the forward corners thereof inclined upwardly forming rearwardly diverging channels with said downwardly sloping surface, an upstanding V-shaped block on the forward central portion of said inclined section, and pockets in said plate 011 either side of said inclined central section having forwardly and laterally curving, walls.

5. As a new article of manufacture an integral cast metal distributor plate comprising a central inclined section, an upstanding V-shaped block at the forward central portion thereof and a crown extending longitudinally along the center line thereof, said inclined central section sloping downwardly from either side of said crown and inclined upwardly at its forward corners, and pockets in said plate on either side of said inclined central section having forwardly and laterally curving walls.

6. In a fuel distributing system, in combination, a distributor plate, a distributor head rearward of said plate, said plate comprising a forwardly extending and upwardly inclined section having a fuel deflecting abutment at its forward central portion, a crown extending longitudinally along its center line and upwardly inclined forward corners, and a plurality of jet openings spacedin horizontal alignment in the front face of said distributor head arranged a height above the rearward top surface of said plate so that the center of the blast issuing from said openings impinges against said inclined section intermediate its forward and rearward edge.

7. In a fuel distributing system in combination, a distributor plate, a distributor head rearwardly of said plate, and means for de-V liv'ering fuel onto said plate, said plate com prising a central inclined section having a crown extending longitudinally along its center line and top faces sloping downwardly from either side of said crown, a plurality of horizontally aligned jets in said distributor head arranged a height above the rearward top surface of said plate so that the center of the blast issuing from said jets strikes the lump fuel delivered about the crown of said inclined section substantially in line with its center of gravity and the fuel delivered to the sloping faces at progressively higher points whereby fuel is projected with progressively lesser degrees of force.-

In testimony whereof I affix my signature.

F. G. PICKARD.

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