IMPROVED METHOD OF AND APPARATUS FOR PRODUCING A FLOW OR CIRCULATION OF HEATING LIQUID BETWEEN CORRUGATED OR SIMILAR DEFLECTING SURFACES
Year: 1884

page_text: I, GEORGE LAWRENCE, of 22, St Mary Axe, in the city of London, Brewers'
" A NEW OR
Engineer, do hereby declare the nature of said Invention for
IMPROVED METHOD OF AND APPARATUS FOR PRODUCING A FLOW OR CIRCULATION
OF HEATING LIQUID BETWEEN CORRUGATED OR SIMILAR DEFLECTING SURFACES, to
be as follows:-
.
My invention has for its object to cause a circulation or flow of shallow currents of
water or other heating liquid between corrugated sheet metal, but is also applicable
in case of flat heating channels provided with internal deflecting plates or pro-
jections adapted to give the circulating liquid a zig zag course.
I limit each of two opposite sides of a shallow corrugated beating vessel by a
pipe or an enlarged channel communicating with the interior of the vessel along
its whole length and joined together outside the vessel by a connecting pipe.
One of the two parallel pipes (the lower one, when the apparatus is in working
position) reaches beyond the junction with the connecting pipe and is there pro-
vided with an injecting nozzle and a valve connected with a steam supply pipe,
while the other of the parallel pipes (the upper one) communicates with an
overflow pipe leading some distance above the heating vessel.
If the vessel is filled with beating liquid, and steam turned on, the latter will
force its way into the lower pipe and cause a flow of water into the same, which
will then pass upward between the corrugated surfaces until it reaches the upper
pipe through which it passes out of the vessel into the connecting pipe or tank and
finally again into the lower pipe. Any excess of hot water will rise into the
overflow pipe and be discharged by the same.

page_text: I, GEORGE LAWRENCE, of 22 St Mary Axe, London, Brewers' Engineer, do
hereby declare the nature of my invention for A NEW OR IMPROVED METHOD of
AND APPARATUS FOR PRODUCING A FLOW OR CIRCULATION OF HEATING LIQUID
BETWEEN CORRUGATED OR SIMILAR DEFLECTING SURFACES, and in what manner
the same is to be performed, to be particularly described and ascertained_in_and_
by the following statement:-
This invention has for its object to cause a rapid and powerful circulation or
flow of currents of water or other heating liquid, between corrugations or through
pipes or tubes of metal by means of steam for the purpose of heating or evaporating
liquids passed over said corrugations pipes or tubes.
The accompanying drawing illustrates the mode of performing the invention.
Fig 1 represents the apparatus in perspective hung on a stand by means of
brackets. Fig 2 is a cross section of the corrugated or zig zag plates with the
addition of steam pipes taken through line A B Fig 1. Fig 3 is section of an
injector nozzle. In all the figures like letters refer to like parts.
C is the corrugated or other surface. D is a steam pipe or chamber arrangement
which may also be made of corrugated sheets. E is a tank in which water is made
to circulate. G is an inlet pipe leading to injector. H is the return pipe. K is
a steam inlet cock. L is a steam bend communicating with the injector or steam
nozzle M from the chamber D. N is a trough to collect the fluid being treated.
O is a movable cover to keep in the steam and heat when desirable. P is a cock
regulating the flow of liquid on to the heater from any tank, the latter not shown.
R is an outlet from trough. S is the supply trough. X, Y, Z are bends or boxes
connecting the pipes in D.
The mode of action is as follows: Liquid to be treated enters the top trough S
by the cock P-it flows over the external surfaces on both sides of the corruga-
tions C and passes over the external surfaces of the pipes in D and is received in
the lower trough N and makes its exit by the pipe R. During the same time there
is a rapid movement of heated water through the space between the plates C
circulating to and from the tank E by means of the pipes G and H, kept in motion
by the steam jet or injector M. The lower part D is used when necessary and can
be removed when not wanted in which case the steam enters direct through the
nozzle M When D is used the steam enters by the cock K passes into the bottom
pipe in D and is communicated to the other pipes by the bends or boxes X, Y, Z,
and heats the corrugations or coil of piping in D previous to entering the injector,
thereby increasing the temperature in case a higher temperature than is given by
the surfaces is required.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The mode of heating liquids and apparatus therefor, by causing a rapid and
powerful circulation or flow of currents of water or other heating liquid between
corrugated or other sheets of metal, by means of a steam jet, substantially as
described, illustrated and for the purposes set forth.