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Патент USA US2131995

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Oct. 4, 1938.
G, M. BROKER
2,131,995
STOKER FUEL DISTRIBUTOR
Filed Dec. 3, 1956
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ATTORNEYS
Patented Oct. 4, 1938
2,131,995
UNITED STATES
PATENT oFFlcE
2,131,995
STOKER FUEL DISTRIBUTOR
George M. Broker, Erie, Pa., assigner to The
Standard Stoker Company, Incorporated, a
corporation of Delaware
Application December 3, 1936, Serial No. 113,968
4 Claims. (C1. 110-104)
and forwardly, flaring outwardly at its upper end,
This invention relates to stokers and more par
ticularly to improved means in a stoker for de
ñecting fuel into the zone of action of the dis
tributing means.
It is an object of this invention to provide in
a Stoker, a deñector that is easily and readily
adjustable and capable of deflecting fuel to the
fuel distributor in proper amounts without inter
vfering with the free passage of fuel toward the
ably secured a distributor plate 22, which plate
forms an extended floor portion of the riser pro- 10
A further object of this invention resides in
the provision of a pivoted deíiector of the above
jectlng through the firing opening I2 of the
construction, the pivot point of which is derectly
The riser I4 is provided with an upwardly di
rected opening 23 which is closed by acover 24.
Bolts 25 are utilized for detachably _securing the 15
cover to the riser I4. Between its side portions
24a, 24h, the cover 24 is provided with a recess
26 extending from the lower rearward edge of the
`
It is also an object of this invention to provide
a pívoted fuel deiiector which is provided on its
under side, and at the foremost edge thereof, with
an enlarged portion for diverting laterally, irre
spective of the angular position of the deflector,
20 a certain amount of the preponderant mass of
fuel passing through the Stoker conduit to the
fuel distributor.
With these and other objects in view, which
will become apparent as the description proceeds,
o the invention resides in the construction, combi
nation and arrangement of parts, hereinafter
more fully described and illustrated in the ac
companying drawing, in which
Figure 1 is a central vertical sectional View
3 O through the rearward portion of a locomotive and
the stoker thereof, showing the invention partly
in similar section and partly in side elevation;
Figure 2 is a plan View of the stoker structure
illustrated in Figure 1 with portions of the loco
motive in section; and
Figures 3 and 4 are sectional views taken on
the lines 3-3 and 4_4, respectively, of Figure 1.
In the drawing, I8 designates a boiler ñrebox
of conventional design having a backhead I I with
a firing opening I2, and provided with the grate
40
I3. Fuel is delivered to the ñrebox by suitable
stoker mechanism, only so much being shown as
is necessary to a complete understanding of this
invention.
The forward tubular conduit section or riser
of a flexible conduit system extending from a
source of fuel supply, as the bin of a locomotive
backhead.
cover 24 to a point rearward of the ñredoor 21.
Within the recess 26 a supplemental cover 28 is 20
positioned, the supplemental cover 28 being
hinged to the upper end of the cover 24'as at
29. Clamps 3D securely fasten the supplemental
cover 28 in position.
Rearwardly of the distributor plate 22 and 25
outside the firebox is a vertically disposed nozzle
or distributor head 3l to which pressure fluid such
as steam is supplied by a desired number of sup
ply pipes 32. 'I‘he head 3| is provided with open
ings 33 in horizontal alignment for emitting a 30
fan-shaped blast of pressure flued across the
distributor plate 22. Disposed in the conduit sec
tion I8 is a screw 34, preferably formed with an
additional flight Elia at its forward end to assist
in insuring a continuous delivery of fuel onto the 35 ‘
distributor plate 22.
In stoking devices of the character described
and illustrated in the drawing, it has been found,
in practice, that the screw conveying means has
a tendency to discharge more fuel to one side of
`the riser than to the other and as a consequence,
the fuel stream delivered into the zone of action
of the steam blasts is of unequal volume; there
by more fuel is spread over one side of the ñre
tender, to the firing opening I2 of the boiler is
boX than the other, establishing troublesome fire 45
conditions. The side toward which the greater
amount of fuel is delivered depends upon the
direction of rotation of the screw While advancing
designated as I4.
th-e fuel forwardly.
The riser I4 is carried on
the backhead II by a supporting bracket I5.
>The riser terminates at its lower end in a
spherical seat I6 receiving the ball member I'I of
a conduit section I8 leading forwardly from a
source of fuel supply.
55
with an upstanding Wall 2| toy which is detach
fuel distributor.
above the pressure fluid device.
15
and communicates with the ñring opening I2
through its laterally spreading and substantially
horizontal mouth portion I 9. 'I‘he mouth portion
I9 is provided with the flanges 20, 20a for at
tachment to the backhead by suitable fastening
means, as by bolts. This mouth portion is formed
From its lower end the riser extends upwardly
1
This invention‘provides novel means to over- 5o
come this uneven delivery and distribution of fuel
comprising a deilector vane 35 which is carried
by the supplemental cover 28. 'I‘he deflector
vane 35 is somewhat triangular in shape, consist
ing of a bottom edge 36 disposed wholly above 55
a
2,131,995
thejet head 3|, the front edge 31, and a rear‘
edge 38 which is curved in conformity to thev
inner shape of the supplemental cover 28.V The
front edge 31 of the deflector vane is disposed
mainly in the transverse vertical plane'of the
front face of the distributor head 3| while the
Y bottom edge 36 is disposed above the plane of
the head 3| >and is V-shaped in transverse Ver
tical cross section. _The apex of the V-shaped
10 bottom edge 36 is directed downwardly toward the
column of fuel being elevated through the riser
yI4 and is eñective to split and divide the on
coming single column of fuel into two columns,
enlargement 5| always remains in a position to
cause a lateral spreading of the preponderant
amount of fuel in the central portion of the
discharge mouth I9.
The deflector vane constructed according to
this invention has been found to be `eifective in
controlling the quantities of fuel fed into the
zone of action of the distributor system, such
control of fuel being accomplished without ap- ~
preciable interference to the passage of fuel
through the riser conduit.
I
Y
claim:
-
'
' l. In a furnace having a wall with ra firing
opening therein, a stoker for feeding fuel to
said furnace comprising a riser conduit having
In order to permit angular adjustment ofthe an upwardly extending portion and a forwardly
deflector vane 35, the upper forward end thereofVY directed discharge mouth in communication with
is provided with a shaft portion 39, the axis'of said :firing opening, means below the level of
which is disposed centrally of the riser I4 ‘and said discharge mouth for urging fuel upwardly
through'said riser conduit in a core shaped mass, 20
20 lies in the transverse vertical plane passing a
slight distance rearward of the distributor head distributing Ameans at »the'discharge mouth of '
front face. The shaft portion 39 of the dellector said riser conduit including aA distributor plate
each being of greater or lesser volume depend
15 ing upon the position of the deiiector vane 35.
vane 35 is journaled in a bearing 4I) formed in
and aV distributor jet head at the rear o-f »said
the foremost edge of the supplemental cover 28.
25 Above Vthe shaft portion 3S is a square extension
4I over which is passed and engaged in operative
relation the handle 42. A pin 43 is driven
through both the extension 4I and the handle 42,
distributor plate, said jet head vhaving -a front
face provided with a plurality of jet‘fopenings 25
for emitting blasts of pressure fluid‘over said -clis
tributor plate, and a fuel de?lector vane associ
ated with said distributing means and arranged
thereby ñrmly securing the vhandle in operative
to act on the fuel prior to the action thereon
of the pressure fluid blasts issuing from said 30
30 relation with the deflector vane 35.-
From the square extension 4I, the handle 42
extends rearwardly and downwardly, terminating
in a llug 44 which seats'upon a ñange 45 extend
ing rearwardly from the supplemental cover 28.
35 This ñange 45 ’is provided with an arcuate slot 46
constituting a raceway for the bolt 47. The bolt
41 on its under side is provided with a head 48
and on its upper side has a threaded portion 49
arranged to be engaged by a hand nut 53. When
40 the nut 50 Vis loosened, the handle 42 and deiiector
vane 35 may be moved Vto a desired position.
Tightening of the nut V5I) draws the head 48 of
the bolt 41-against’the under side of the flange 45,
thereby firmly securing the handle A42 and deflec
45 tor vane 35 in the desired position.
The fuel deflector vane 35 is provided in its
lower foremost portion with an enlargement' or
bulb 5|, the foremost edge of which extends for-l
wardly beyond the jet head 2| while its sides 5Ia,
50 5|_b merge into the plate-like portion of the de
ilector vane 35. -The function of Vthis enlarge
ment 5| is to cause the preponderant amount
of fuel'within the central portion of the mouth
portion I9 Ato be more equally Vproportioned
55
laterally.
,
.
'
jet head, the said deflector vane being pivotally
mounted `at substantially its forward end >‘for
movement about an upright axis, `said'fvane being.
disposed in saidl conduit with Áits >pivotala’xis
lying in aplane extending transversely of the
flow of fuel through the conduit and coinciding
substantially with the plane of the front face
of said jet head, said deflector Vane being ar
ranged with no part of its extended axis passing
into the upwardly directed portion of said riser
conduit.
'
2. In a furnace having a wall with a firing
opening therein, a Stoker for feeding fuel to said
furnace comprising a `riser conduit having an
upwardly extending portion and a forwardly 45
directed discharge mouth in communication with
said firing opening, means below the level of said
discharge mouth for urging fuel upwardly lthrough
said riser conduit in a core shaped mass, dis
` tributing means at the discharge mouth of said 50
riser conduit including a distributor vplate and a
distributor jet head at the rear. of said distribu
tor plate, said jet'head having a front face pro
vided with a plurality of jet openings for emit
ting blasts of pressure fluid oversaid distribu 55
If banks of fuely are formed on the left or right
tor plate, and a fuel deflector vane associated
side of the ñrebox, they can be burned away and
the fire leveled out by so adjusting the deflector
vane 35 as to starve the banked side and feed
60 more fuel to the opposite side. Thus, if it is
desired to starve the left side of the ñrebox, the
with said distributing means and arrangedv to
act on the fuel prior to the action thereon of
the pressure fluid blasts issuing from said jet
head, said deñector vane including an' upright 60
forward edge disposed mainly Vin the vertical
deñector vane 35 is moved so that its lower rear
ward edge is nearer the- left side of the` riser
including a lower portion extending a slight 4dis
I4.
tance forwardly of said front face, said deflector
The closer the lower rearward edge of the
plane of the front face of .said >jet head and
65 deilector vane 35 is'to the left side of the riser,
vane being pivotally mounted at substantially 65
the less fuel will be fed to the left side of the .
fireboX.
Similarly, banks may be removed from
>the rightY side of the firebox. Should a bank
occur'in the central portion of the flrebox, the
70 deflector vane 35 vmay be maintained in its
central position, and, by reducing the pressure
of fluid issuing from thecentral group of jet
openings 33, the bank will be reduced. It should
be particularly noted that, regardless of the
7~5 angular position of the deflector vane 35, the
its forward >end for movement about an upright
axis, said vane being .disposed in said conduit
with its _pivotal raxis lying in a .plane `extending
transversely »of the flow of fuel through .the 70
.conduit and coinciding substantialiy lwith the
plane of the front face kof ysaid jet head, said
deflectorvane being arranged with no part of
its extended axis passing intorthe upwardly vdi
rected portion of said riser conduit.
3
2,131,995
3. In a furnace having a wall with a firing
opening therein, a stoker for feeding fuel to said
furnace comprising a riser conduit having an
Cr'
upwardly extending portion and `a forwardly di
rected discharge mouth in communication with
said ñring opening, means below the level of said
discharge mouth for urging fuel upwardly
through said riser conduit in a core shaped mass,
distributing means at the discharge mouth of said
riser conduit including a distributor plate and a
distributor jet head at the rear of said distributor
plate, said jet head having a front face provided
with a plurality of jet openings for emitting blasts
of pressure fluid over said distributor plate, and
a fuel defìector vane associated with said distrib
uting means and arranged to act on the fuel prior
to the action thereon of the pressure fluid blasts
issuing from said jet head, said deñector vane
including an upright forward edge disposed
mainly in the vertical plane of the front face of
said jet head and including a lower portion having
.an enlarged forward end extending a slight dis
tance forwardly of said front face, said deilector
vane being pivotally mounted at substantially its
forward end for movement about an upright axis,
said vane being disposed in said conduit with its
pivotal axis lying in a plane extending trans
versely of the fiow of fuel through the conduit
and coinciding substantially with the planeV of
the front face of said jet head, said deflector
vane being arranged with no part of its extended
axis passing into the upwardly directed portion of
said riser conduit.
4. In a furnace having a wall with a firing
opening therein, a stoker for feeding fuel to said
furnace comprising a riser conduit having an up
wardly extending portion and a forwardly direct
ed discharge mouth in communication with said
firing opening, means below the level of said dis
charge mouth for urging fuel upwardly through
said riser conduit in a core shaped massjdistrib
uting means at the discharge mouth of said riser
conduit including a distributor plate and a dis
tributor jet head at the rear of said distributor
plate, said jet head having a front face provided
with a plurality of jet openings for emitting
blasts of pressure fluid over said distributor plate,
and a fuel deflector vane’associated with said
distributing means and arranged to act on the
fuel prior to the action thereon of the pressure
fluid blasts issuing from said jet head, said deflec
tor Vane including an upright forward edge the
lower portion of which is enlarged and extends
a slight distance' forward of the front face of said 20
jet head and the upper portion of which forward
edge is disposed rearward of the lower portion,
said deiiector Vane being pivotally mounted at
substantially its forward end for movement about
an upright axis, said Vane being disposed in said 25
conduit with its pivotal axis lying in a plane ex
tending transversely of the flow of fuel through
the conduit and coinciding substantially with the
plane of vthe front face of said jet head, said
deilector Vane being arranged with no part of its 30
extended axis passing into the upwardly directed
portion of said riser conduit.
GEORGE M. BROKER.
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