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Патент USA US2115565

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April 26, 1938.
E. A. TURNER
2,115,565
STOKER MECHANISM
Filed July 21, 1954
_1E-’1y 2
INVENTOR.
g.’
2,115,565
Patented Apr. 26, 1938
uNiTED STATES
PATENT OFFICE
2,115,565
STOKER MECHANISM
’ Edwin Archer Turner, New York, N. Y., assignor,
by mesne assignments, to The ‘Standard Stoker
Company, Inc., New York, N. Y., a corporation
of Delaware
Application July 21, 1934, Serial No. 736,316
’ 3 Claims.
(Cl. 110--101)
This invention relates to Stoker mechanism
and more particularly to fuel distributors or other
terminal parts of stokers.
The main object of the invention is the pro
vision of improved means for cooling the fuel
distributor plate of the Stoker exposed to the in
tense heat of the fire of the boilerfurnace.
Another object of the invention is to employ
the pressure fluid of the fuelpropelling blasts as
,lo a cooling medium for the fuel distributor plate
of the stoker and to cause this fluid to pass
through the fuel distributor plate before entering
the pressure regulating valves for the propelling
blasts.
a
A
A further object of the invention is the pro
vision of means in the pressure fluid supply sys
tem of the Stoker for first passing the pressure
fluid for the propelling blasts into the fuel dis~
tri-butor plate of the Stoker and thence `to the
pressure regulating Valves for the propelling
blasts or for cutting out of operation the flow of
fluid to the fuel distributor plate and passing
the fluid directly to the aforesaid regulating
valves.
`
l
Other objects and advantages of `the invention
will be apparent from the following description
taken in connection with the accompanying
drawing, in which,
i
Fig. l is a central vertical longitudinal sec
tional view through the rear portion of a boiler
furnace with the device- of the invention simi
larly shown;
Fig. 2 is a sectional View taken on the line
2-2 of Fig. 1; and
.
Fig. 3 is a plan view of the chambered fuel dis
tributor of the invention.
On the drawing, IU illustrates a boiler furnace
having the upstanding wall II which embodies
the firing opening IZ through the lower portion
40 of which fuel is delivered to the furnace by the
stoker I3 and above which stoker fuel may be
fed manually through the firing opening, the
upper part of which is covered by the usual form
of ñredoor I4. Only that portion of the stoker
45 I3 is shown which is necessary to illustrate the
present invention.
The Stoker I3 includes the discharge conduit
I5, the mouth portion I6 of which opens for
wardly into the firing opening I2. A distributor
50 plate or terminal part Il of the Stoker is posi
`tioned in the mouth portion I6 where it is re
movably secured to the conduit by spaced tap
bolts i8. The plate or terminal part I1 extends
forwardly through the firing opening into the
55 furnace I0 and because of its location it is ex
posed to the _flame o-f the fire or to the intense
heat thereof. 'I'his plate may carry the abut
ment ribs I 9 or other equivalent means for coop
erating with the pressure fluid fuel propelling
blasts discharging from the rearwardly disposed Ul
jet or distributor head 20 to spread the fuel over
the flrebed.
The distributor head 20 is mounted in the
mouth portion I6 back of the distributor plate il
and is secured in this position by the cap screws _ 10
2I. Jet openings 22 in the front face of the
head 20 in a position to direct pressure fluid over
the plate I'I communicate with a plurality of
separated chambers 23. Each chamber is open
at its bottom end to receive one of the supply, 15
pipes 24 leading from a manifold 25 disposed on
the wall Il at one side of the stoker conduit.
The chamber 26 of the manifold communicates
with the supply pipes 24 and it receives pressure
fluid from the pipe 21. A regulating valve such 5 20
as an ordinary globe or needle Valve 28 is placed
-in each supply line 24 between the manifold and
the distributor head to control the pressure of
the fluid propelling blasts.
Thus far the construction described is well` 25
known in the art, particularly as embodied inthe
“Standard BK Type Stoker”. The novelty of
the present invention is the provision with the
construction described or the like of means for
employing the pressure fluid for the fuel pro
pelling blasts as a cooling medium for the dis
tributor plate of the Stoker in a manner not to
interfere with the operation and control of the
propelling blasts. This means now will be de
scribed.
,
35
Pressure fluid from a suitable source of Supply
is conducted by the main supply line 30 through
the globe valve 3I to the two-Way valve 32. The
supply pipe 2T of the manifold opens into one
side o-f the two-way valve 32 and at the opposite 4.0
side a supply line 33 leads from the aforesaid
Valve to the distributor plate IT‘where it opens
into an enclosed chamber I'Ia formed at the
under side of the plate constituting in effect a
chambered jacket. The chamber Ila is divided
by the ribs I'Ib into a plurality of smaller charn~
bers I'Ic which communicate at opposite ends
through the apertures as at I'ld in the ribs. At
the same side of the plate but at the end thereof
opposite the opening for the intake line 33, a pipe
34 leads from the chamber of the plate to the
two-way valve 32 into which it opens opposite
the main supply line 30.
As best shown in Fig. 2, the Valve member 32a
of the two-Way valve can be set by the'handle
2
2,115,565
3219 to divert the pressure fluid from the main
supply line 30 either to the supply line 2l or to
the supply line 33. Any suitable form of two-way
valve may be used that will control the pressure
fluid as described.
In normal operation of the Stoker mechanism,
the fuel advances upwardly in the discharge con
duit l5 and forwardly into the mouth portion
therethrough arranged to discharge fuel propel
ling blasts across the upper surface of the dis
tributor plate, a manifold having a pressure fluid
supply chamber, supply lines establishing com
munication between said chamber and the pas 5
sages in the distributor head, regulating valves in
said supply lines adapted to control said blasts,
of action of the pressure fluid propelling blastsv
discharging from the jet openings 22. The pres
sure fluid to >the jet openings is ñrst brought
and means for supplying pressure fluid into said
hollow distributor plate and thence into the sup
ply chamber of said manifold, said means in 10
cluding a valve mechanism operable to out off
the supply of pressure fluid to said hollow dis
tributor plate and to divert said fluid directly
from a source of supply through the main supply
to said supply chamber of the manifold.
I6 where it rolls or falls over the distributor head
2D onto the distributor plate il within the zone
line 3B and its valve Si to the two-way valve 32.
'Ifnere the pressure fluid is directed by the setting
2. A Stoker mechanism for supplying fuel to a
boiler furnace comprising a distributor table lo
of the valve member 32a into the pipe line 33 g cated at the furnace end of said mechanism and
from which it flows into the- chamber Ila of the
distributor plate. Within this chamber the pres
sure fluid flows longitudinally back and forth
through the smaller connecting chambers llc
until it reaches the outlet line 34 through which
it flows back into thetwo-way valve 32 on the
other side of the valve member 32a which directs
it into the supply pipe 2l and thence to the
chamber '26 of the manifold 25.
From the manifold the pressure fluid flows into
the pipes 24 which conduct the pressure fluid
to the chambers of the distributor head 20. The
'30 valves 28 in the pipes 24 control the pressure of
the blasts discharging through the jet openings
wall and means providing a chamber beneath 20
said top wall, a jet head having a passage there
through arranged to discharge a blast of fluid
under pressure across the top wall of said dis
tributor plate for projecting fuel over the furnace
ñrebed, and means leading from a source of sup
ply for supplying pressure fluid directly into said
chamber and thence into the passage in said jet
head, said last named means including valve
mechanism operable to cut off the supply of pres
25
sure fluid to said chamber and to divert such 30
fluid from the source of supply to the passage in
and may be regulated independently of one an
said jet head.
other to discharge propelling blasts of different
3. A Stoker mechanism for supplying fuel to a
boiler furnace comprising a distributor table lo
cated at the furnace end of said mechanism and 35
forces.
35
being exposed to the heat of the furnace, said
distributor table having a fuel supporting top
'
`
Should the exposed portion of the chambered
plate Il eventually crack or burn through, caus
ing a flow of pressure fluid into the furnace, the
flow of fluid .to the chambered plate can be cut
off and the fluid fed directly to the manifold by
changing the setting of the valve member 32a
so that it will cause the pressure fluid to pass
directly from'the main supply line 38 to the
manifold connection line 2l.V
,
Preferably, I contemplate utilizing saturated
steam as the pressure fluid.
The vsaturated 'steam
passing through the chambered plate Il Ywill _ab
sorb heat and serve to cool the plate; and; in
effect, the chambered plate will'function some
what as a super-heater for the saturated steam
tending to decrease the water content thereof
and thus minimize so-called water-cutting of the
jet openings 22.
I claim:
'
Y
1. In a Stoker mechanism for a boiler furnace,
a hollow distributor plate adapted to extend into
the furnace, a distributor head having passages
being exposed to the heat of the furnace, said
distributor table having a fuel supporting top
wall and means providing a chamber beneath
said top wall, a jet head having a passage there
through arranged to discharge a blast of fluid 40
under pressure across the tcp wall of said dis
tributor table for projecting fuel over the furnace
fìrebed, a manifold having a pressure fluid sup
ply chamber, a supply line establishing communi
cation between the second named chamber and 45
the passage in said jet head, a regulating valve
in said supply line adapted to control the flow of
fluid from the second named chamber to the
passage in said jet head, and means leading from
a source of supply for supplying pressure fluid 50
directly into the flrst named chamber and .thence
into the second named chamber, said means in
cluding valve mechanism operable to cut off the
supply of pressure fluid to the ñrst named charn
ber and divert such to the secon-d named chamber. 55
EDWIN ARCHER TURNER.
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