Improvements in and relating to Calorifiers, Feedwater Heaters, Condensors, Evaporators, and the like.
Year: 1899

page_text: Date of Application, 30th May, 1899
Complete Specification Left, 24th Feb., 1900-Accepted, 7th Apr., 1900
PROVISIONAL SPECIFICATION.
Improvements in and relating to Calorifiers, Feedwater Heaters,
Condensors, Evaporators, and the like.
We, JONATHAN KITCHEN, of Holmfield, Old Normanton, in the County of
Derby, and ERNEST EDGAR KITCHEN, of 43, Arthur Street, in the County
Borough of Derby, Boiler Manufacturers, do hereby declare the nature of this
invention to be as follows:-
The object of our invention is to obtain increased efficiency from calorifiers,
feedwater heaters, condensors, evaporators and other apparatus used for the
transmission of heat through surfaces.
We do this by employing two concentric tubes instead of single tubes as now
generally used. The concentric tubes are arranged, in the case of a calorifier,
so that the steam passes between the two tubes, whilst the water to be heated is
in contact with the outside of the outer tube and the inside of the inner tube.
This arrangement gives a much greater heating surface in the same space and
at the same time breaks up the water to be heated in such a way that the heat
is more rapidly absorbed.
In carrying out our invention we employ one or a number of pairs of these
concentric tubes. They are connected to a steam chest at each end in such a
way that the steam on entering the top chest passes downwards between the two
tubes to the bottom chest to which is connected a suitable trap to carry away
the condensed water. The whole is surrounded with an outer casing so that the
water to be heated circulates round the outer surfaces of the outer tube and
through the heart of the middle tube thus absorbing heat from the two surfaces
instead of only one. The tubes may be secured to the steam chests either by
caulking, screwing or any other suitable method.
"tubes" as
It will be understood that although we have herein mentioned
being employed we do not limit ourselves to a circular cross section of tube; we
may, to still further increase the efficiency of the device, employ tubes of a
corrugated or other cross section if desired.
Dated this 20th day of Mov 1900
W. SWINDELL,
Agent for the Applicants.
Improvements in and relating to Calorifiers, Feedwater Heaters,
Condensors, Evaporators, and the like.
We, JONATHAN KITCHEN, of Holmfield, Old Normanton, in the County of
Derby, and ERNEST EDGAR KITCHEN, of 43, Arthur Street, in the County
Price S 1

page_text: Borough of Derby, Boiler Manufacturers, 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:
-
The object of our invention is to provide an improved apparatus for the trans-
mission of heat through surfaces as applied to feed water heaters, calorifiers,
steam heaters condensors and the like, in such a way as to do the work in the
most rapid and economical manner possible.
In order that our invention may be the more readily understood we have
caused to be annexed to this specification a sheet of drawings, the different
figures and letters of reference on which will be hereinafter referred to.
Figure 1 is a vertical section on line b b of Figure 2.
Figure 2 is a sectional plan on line a a of Figure 1.
In carrying out the said invention we provide an outer case C of cast iron or
any other suitable metal, two steam chests D and D¹. A number of pairs of
tubes E, E arranged as shewn on drawings; the outer, or larger tubes E are
connected to the two inner walls of the steam chests and the inner and smaller
tubes are connected to the two outer walls of the steam chests in such a
manner as to leave an annular space F between the tubes and connecting the
interiors of the two steam chests, G is the steam connection to the top chest
and H is the outlet for condensed steam.
It will be seen that the steam or heating agent passes from one to the other
of the steam chests through the annular space F between each pair of tubes,
and as the outer surface of each large tube and the inner surface of each small
tube is in contact with the water or other body to be heated, a double heating
surface in a small space is thus provided.
A great point in this apparatus is the case with which all surfaces that are
likely to become coated with deposit can be readily and effectually cleaned.
The drawings represent a calorifier of which K is the flow connection and
L the return.
It will be seen that by our invention we provide two heating surfaces in the
space of one tube, the steam is presented in thin bodies throughout the apparatus
thus rendering condensation most rapid and effectual, the tubes may be of any
suitable metal, and while the drawings represent a vertical calorifier any of the
apparatus named may be made of horizontal type.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:
In the arrangement of heating surfaces in feed-water heaters, calorifiers, steam
water heaters, condensors and the like apparatus, said surfaces being tubular
and of any section or size and consisting of an outer and an inner tube arranged
together with an annular space between them and connected with a steam chest
at each end in such a manner as to establish a communication between the two,
through the annular space aforesaid, substantially as described and illustrated.
Dated this 23rd day of February 1900.
W. SWINDELL,
Imperial Chambers, Albert Street, Derby,
Agent for the Applicants.