An Improvement in Burners for Pulverised or Liquid Fuel,
Year: 1899

page_text: Date of Application, 13th Sept.; 1899-Accepted, 21st Oct., 1899
1
COMPLETE SPECIFICATION:
An Improvement in Burners for Pulverised or Liquid Fuel,
I, GEORGE STOCKHAM EMERICK, of No. 719, North 5th Street, Philadelphia,
State of Pennsylvania, United States of America, Mechanical Engineer, do hereby
declare the nature of this invention hand in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to burners for pulverised or liquid fuel. The defect
hitherto existing in burners for this purpose has been that the fuel is driven from
them into the kiln or furnace in such manner that it passes through a consider-
able distance in the furnace before becoming ignited so that the combustion is
more or less imperfect.
The object of my invention is to provide means whereby the fuel is discharged
from the burner in such a manner as to ensure a more immediate and complete
combustion than is obtained by existing devices, as I shall describe referring to
the accompanying drawings.
Fig. 1 is a side view partly in vertical section, of a burner and its connections
according to my invention. Fig. 2 is an end view, Fig. 3 is a side view of the
inner cone with a portion of the fuel pipe.
In Fig. 1, B is a cylindrical chamber with which the feed pipe A communicates.
The outer cone C is adjustably secured to one end of the cylindrical chamber B in
a manner hereinafter more particularly described. The pipe E passes through a
stuffing box H and the middle of the cylindrical chamber B and terminates in
the orifice N. K and L are branches furnished with the valves P and Q respec-
tively. F is a helical flange projecting from the pipe E within the cylindrical
chamber B. D is a cone on the pipe E concentric to the cone C, and M is the
annular discharge orifice between the cones C and D. G is a pipe furnished with
a valve 0 and communicating with the pipe A above the junction of the latter
with the cylindrical chamber B.
The operation of the burner is as follows: -
Pulverised fuel being introduced through the feed pipe A into the cylindrical
chamber B. Steam or compressed air supplied through the pipe G drives the fuel
through the cylindrical chamber B and through the annular orifice M between
the cones, a rotary movement being imparted to the fuel in its passage by the
helical flange F. As it is important that the unburned fuel should not so diverge
as to impinge against the walls of the kiln or furnace, causing imperfect com-
bustion, the edges or lips of the cones C and D are bent slightly inward.
The direction of the annular discharge in this way and the rotary movement
imparted to the fuel combine to ensure complete combustion.
In order to control or modify the discharge the outer cone C is adjustably
secured to the cylindrical chamber B, either by being screwed into it as shewn,
or by being arranged to slide therein as in a sleeve, so that the turned in lip of
the cone C. when moved out or in increases or decreases the width of the annular
orifice M

page_text: When liquid combustible such as oil is employed it is fed through the pipe K
and is driven through the pipe E and nozzle N by steam or compressed air sup-
plied through the pipe L.
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Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, I declare that what
I claim is
In a burner for pulverised or liquid fuel the combination of the cylindrical
chamber B, the pipe E within it the outer cone C adjustably secured to B, the
inner cone D concentric with the outer cone C both cones having their lips
bent slightly inwards means such as the feed pipe A. for introducing pulverised
fuel means such as the pipe G for introducing fluid under pressure to impart velo-
city to the fuel during its passage through the burner, the helical flange F on
the pipe E for imparting a rotary movement to the fuel, the pipe K for supply-
ing liquid fuel and the pipe L for introducing fluid under pressure to impart
velocity to the fluid fuel during its passage through the pipe E, substantially as
described and for the purposes set forth.
Dated this 13th day of September 1899.
ABEL & IMRAY,
Agents for the Applicant.