Improvements in Apparatus for Supplying Liquid Fuel to Furnaces.
Year: 1893

page_text: Date of Application, 11th Oct., 1893
Complete Specification Left, 4th July, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Supplying Liquid Fuel to Furnaces.
I, JOHN CHARLES ETCHELLS, of Heaton Chapel, near Stockport, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to
be as follows --
This invention is designed to provide an improved liquid fuel spray injector by
which liquid hydrocarbons can be supplied in a continuous spray mixed with steam
and air to the furnace.
It consists essentially in constructing the injector with a steam jet so arranged
as to induce a strong current of air to impinge with it upon a stream of liquid fuel
flowing at right angles thereto and break it up into a spray and carry it into the
furnace.
In carrying out the invention I construct the nozzle through which the steam
jet issues with a number of annular openings around it through which the air is
admitted the force of the steam inducing a strong current of air to enter and mix
with it. The nozzle or tube through which the liquid fuel flows is placed at right
angles to the steam nozzle in an expanding tube or mouth and a short distance in
front of the steam nozzle so that the jet of steam and air are blown across the
entering stream of fuel and break it up or convert it into a fine spray.
This spray of fuel with the steam and air with which it is mixed pass into a tube
placed in front of the nozzles and are by it conducted into the furnace.
This tube is adjustable to convey the fuel the desired distance into the furnace
and at its inner end may be provided with a deflecting plate to direct the inflowing
spray of fuel downwards towards the hearth of the furnace or in any other required
direction.
Dated this 10th day of October 1893
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Supplying Liquid Fuel to Furnaces.
I, JOHN CHARLES ETCHELLS, of Heaton Chapel, near Stockport, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention is designed to provide an improved liquid fuel spray injector by
which liquid hydrocarbons can be supplied in a continuous spray mixed with steam
and air to the furnace.
It consists essentially in constructing the injector with a steam jet so arranged as
to induce a strong current of air to impinge with it upon a stream of liquid fuel
Howing at right angles thereto and break it up into a spray and carry it into the
furnace.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Sectional elevation of the apparatus, showing its position in steam

page_text: Fig. 3. End elevation of the deflecting plate F.
Fig. 4. Plan of same.
The apparatus is constructed with a nozzle A and valve B for the admission of
steam and with a nozzle C at right angles thereto and valve D for the admission
of the oil or liquid fuel.
The nozzle A through which the steam jet issues I construct with a number of
annular openings a around it through which the air is admitted the force of the
steam inducing a strong current of air to enter and mix with it. The nozzle or
tube C through which the liquid fuel flows is placed at right angles to the steam
nozzle in an expanding tube or mouth C₁ and a short distance in front of the
steam nozzle so that the jet of steam and air is blown across the entering stream of
fuel and breaks it up or converts it into a fine spray.
This spray of fuel with the steam and air with which it is mixed pass into a
tube E. placed in front of the nozzles and conducted by it into the furnace.
The tube E is adjustable to convey the fuel the desired distance into the furnace
and at its inner end is provided with a deflecting plate F to direct the inflowing
spray. of fuel downwards towards the hearth of the furnace or in any other required
direction..
The steam admission pipe G may be placed in any convenient position and Bo
likewise may be the oil or fuel supply pipe H. The steam valve B is opened and
closed by the hand wheel I and the valve D by which the quantity of fuel is
regulated is operated by the handwheel J.
Having now particularly described and ascertained the nature of the said 'inven-
tion and in what manner the, same is to be performed I declare that what I
claim is :-
1.: An apparatus or injector for supplying liquid fuel to furnaces in the form of
spray constructed with air inlets around the steam nozzle to induce a current of air
to enter with the steam and impinge upon and mix with the fuel substantially as
described.
2. In an apparatus or injector for supplying liquid fuel to furnaces the com-
bination with the steam nozzle A of the air inlets a the nozzle or tube C at right
angles thereto for supplying oil or liquid fuel the tube E for delivering it to the
furnace and the deflecting plate F constructed and arranged substantially as
described.
Dated this 28th day of June 1894.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.