Improvements in Apparatus for Heating Fluids, such as for Producing Steam and Heating Air.
Year: 1893

page_text: Date of Application, 19th Dec., 1893
Complete Specification Left, 17th Sept., 1894-Accepted, 3rd Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Heating Fluids, such as for
Producing Steam and Heating Air.
I, JAMES BLATCH Cox, of Shelton, Torquay, House and Estate Agent, and
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to apparatus for heating fluids, such as for producing steam
and heating air, wherein the hot combustion gases from a furnace are made to rise
up in a closed chamber containing a steam generator or air heating apparatus, and
after ascending to the top of such chamber and becoming cooled to a certain
extent by imparting heat to the steam generator &c., are made to descend to the
bottom of the chamber again before passing off to the chimney through outlets
there situated.
By this means the heat of the gases is most perfectly utilised and very uniformly
distributed over the heating surfaces of the steam generator &c., so that a high
degree of efficiency is insured.
For this purpose, in applying the invention to the raising of steam, I arrange,
within a closed casing, any suitable form of steam generator, such as a cylindrical
vessel through which tubes are made to pass in a horizontal, vertical, or inclined
direction, spaces being left between the sides of the generator and the surrounding
casing.
A suitable furnace or combustion chamber, situated at one end of or at the side
or under the casing, communicates with the latter by means of a fine that may be
carried along horizontally in the casing to the opposite end thereof, being made to
pass either through the water space of the boiler or outside the same, and from the
open end of such flue the highly heated gases from the combustion chamber will
rise up through the spaces between the boiler and the casing, passing partly through
the before mentioned tubes if such are provided, and giving off their heat to the
water in the boiler as they ascend. At any convenient part within the casing I
provide an escape flue communicating at top with a chimney and extending down
to the bottom of the casing, being by preference formed with two or more
branches, each of which has an opening at bottom for the entrance of the gases
from the casing.
Thus the combustion gases having become more or less cooled in ascending in
contact with the boiler as described, they will be made to descend again, giving off
a further portion of their heat to the steam generator, and when arriving at the
bottom in a comparatively cool condition they will be drawn off. through the escape
flue. This flue, being heated externally by the heat of the casing will cause a very
effective draught notwithstanding that the gases have first to travel upwards and
then downwards again in the casing before passing off through the flue.
Instead of letting the gases ascend in the casing from the Hue of the combustion
chamber at the bottom of the casing, the said flue may be carried up to near the
top of the casing, so that the gases will enter the latter at the top, and will only
have a descending motion in the casing.
In applying this invention to the heating of an air supply, I arrange the
combustion chamber to communicate either directly or through a flue with the
interior of a casing through which pass a number of tubes placed either in a
vertical, horizontal, or inclined direction, the ends of the tubes being made to pass
through the casing and to communicate on the one hand with an air supply flue
and on the other hand with a conduit passage or with the interior of a room. A
chimney flue extends through the top of the casing down to near the bottom of the
•

page_text: interior thereof, being by preference formed with two or more branches extending
to different parts of the chamber, each of which branches has an opening at
bottom. The hot combustion gases from the combustion chamber in entering the
casing ascend therein either directly, or through a passage, to the top thereof and
in giving off their heat to the tubes through which the air supply is passing, they
become cooled and descend again and finally escape through the openings of the
chimney-flue, at the bottom of the casing.
Dated this 10th day of December 1803
COMPLETE SPECIFICATION.
Improvements in Apparatus for Heating Fluids, such as for
Producing Steam and Heating Air."
I, JAMES BLATCH Cox, of Shelton, Torquay, House and Estate Agent and
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 :-
My invention relates to apparatus for beating fluids, such as for producing steam
and heating air, constructed and arranged as I shall describe referring to the
accompanying drawings:
The hot combustion gases from a furnace are made to rise up in a closed chamber
containing a steam generator or air heating apparatus and, after ascending to the
top of such chamber and becoming cooled to a certain extent by imparting heat to
the steam generator or heater, are made to descend to the bottom of the chamber
again before passing off to the chimney through outlets there situated. By this
means the heat of the gases is most perfectly utilised and very uniformly distributed
over the heating surfaces of the steam generator or heater, so that a high degree
of efficiency is ensured.
In applying the invention to the raising of steam I adopt an arrangement such
as is shewn in longitudinal section Fig. 1 and transverse section Fig. 2.
Within a closed casing C is placed any suitable form of steam generator, such
as a cylindrical.vessel B, through which tubes T are made to pass in a horizontal,
vertical, or it might be an inclined direction, spaces being left between the sides of
the generator and the surrounding casing.
A suitable furnace or combustion chamber F situated, at one end or it might be
at the side or under the casing, communicates with the latter by means of a flue G
space S and tubes T. The flue G may be carried along. horizontally in the casing
to the opposite end thereof being made to pass either through the water space of
the boiler as shewn, or it might be outside the same, and from the open end of this
flue G, the highly heated gases from the combustion chamber will rise up through
the space S between the boiler and the casing, passing through the tubes T and
giving off their heat to the water in the boiler.
At any convenient part within the casing I provide an escape flue E commu-
nicating at top with a chimney, and extending down to near the bottom of the
casing.
Thus the combustion gases, having become more or less cooled in imparting heat
to the boiler as described, are made to descend along the spaces O giving off a
further portion of their heat to the steam generator, and when they arrive at the
bottom in a comparatively cool condition they are drawn off through the escape
flue E. This flue, being heated externally by the heat in the casing will cause a
very effective draught notwithstanding that the gases have first to travel upwards
and then downwards again in the casing before passing off through the flue.
Instead of letting the gases ascend in the casing from the flue of the combustion

page_text: chamber at the bottom of the casing, the said flue may be carried up to near the
top of the casing, so that the gases will enter the latter at the top, and will only
have a descending motion in the casing. In like manner as shewn in Fig. 3 water
may be heated, the products of combustion acting on a water pipe P arranged
within the casing C. Obviously any suitable form of boiler or water heater may
be employed, the combustion gases passing through or around tubes, coils or
other extended surfaces.
In applying this invention to the heating of an air supply as shewn in Fig. 4,
I arrange the combustion chamber to communicate through a flue G with the
interior of a casing C through which pass a number of tubes T placed vertically
as shewn, or they might be horizontal or inclined, the ends of the tubes being
made to pass through the casing and to communicate on the one hand with an air
supply flue A and on the other hand with a conduit passage R or with the
interior of a room.
A chimney flue E extends down to near the bottom of the casing.
The hot combustion gases from the combustion chamber, on entering the casing,
ascend therein and in giving off their heat to the tubes T, through which the air
supply is passing, they become cooled and descend again and finally escape by the
chimney flue E from near the bottom of the casing.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is :-
•
Apparatus for heating fluids consisting of a chamber or casing containing a
boiler, pipe, coil or set of tubes, an inlet for combustion gases to the casing and an
outlet flue for these gases leading from the lower part of the casing to the chimney,
substantially as described.
Dated this 17th day of September 1894.
ABEL & IMRAY,
Agents for the Applicant.