Improvements in Evaporating, Condensing, or Feed-heating Apparatus.
Year: 1899

page_text: Date of Application, 12th June, 1899
Complete Specification Left, 12th Mar., 1900-Accepted, 28th Apr., 1900
PROVISIONAL SPECIFICATION.
Improvements in Evaporating, Condensing, or Feed-heating
Apparatus.
We, STEPHEN EVANS ALLEY, of the Sentinel Works, Polmadie, in the County
of Glasgow, North Britain, Engineer, and DONALD MATHIESON, of 30, Jackson
Street, Sunderland, in the County of Durham, Engineer, do hereby declare the
nature of this invention to be as follows, that is to say:-
This invention has for its object to improve the construction of evaporating,
condensing, and feed-heating apparatus, the improved apparatus comprising a
casing containing a number of tubes which are arranged so as, whilst being
efficient, to be accessible for cleaning or examination or easily removable.
The casing, or its lower part is made partly semi-cylindrical in cross section
and with an opening provided with a door. In a suitable position depending on
the shape of the lower part of the casing, there is arranged a casting made with
end trunnions entered into and capable of turning in suitable bearings. The
casting is by a partition internally divided into two compartments one of which
communicates by means of a flexible tube or other suitable connection with an
inlet pipe and the other by a similar flexible tube or other suitable connection with
an outlet pipe. Or the inlet and outlet may be through stuffing boxes forming
bearings for the internally divided casting. Several coiled pipes are fixed to the
internally divided casting and are bended or coiled so as to occupy more or less
of the space in the casing. Each coiled pipe has one end fixed in communication
with one compartment of the internally divided casting and the other end with
the other compartment, and in the case of an evaporator steam from the inlet pipe
passes through the flexible tube, or other suitable connection or the trunnion
stuffing box at one end of the internally divided casting into one of the compart-
ments of the latter and through the several coiled pipes into the other compart-
ment whilst water due to condensation passes off by the flexible tube or other
suitable connection or trunnion stuffing box at the other end of the internally
divided casting connected with the outlet pipe. In some cases as in a condenser
the cold fluid may pass through the tubes the hot fluid being outside of the tubes.
When the door is opened the set of coiled pipes on their internally divided
casting can be turned more or less round to either side so that the coiled pipes may
become almost entirely external to the casing in which position they can be exam-
ined and cleaned with great facility, the flexible connecting inlet and outlet tubes
permitting of this turning action. Or the bearings for the internally divided cast-
ing may be detached from the casing and the set of coiled pipes with the inter-
nally divided casting can be completely removed either with or without discon-
necting the flexible connecting tubes when made of sufficient length.
The coiled tubes may be of ordinary round section but are by preference of
elliptical or similar section presenting larger surfaces on the inner and outer sides
than at top and bottom. These tubes may also in some cases, be made of flexible

page_text: tubing which will facilitate connection with the internally divided casting and
cleaning of the tubes.
Datud this Thanth I 1900
EDMUND HUNT,
Applicants' Agent.
Improvements in Evaporating, Condensing, or Feed-heating
Apparatus.
We, STEPHEN EVANS ALLEY, of the Sentinel Works, Polmadie, in the County
of Glasgow, North Britain, Engineer, and DONALD MATHESON, of 30; Jackson
Street, Sunderland, in the County of Durham, 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, that
is to say:
This invention has for its object to improve the construction of evaporating,
condensing, and feed-heating apparatus, the improved apparatus comprising a
casing containing a number of tubes, which are arranged so as whilst being
efficient, to be accessible for cleaning or examination or easily removable.
In carrying out the invention there is arranged to be turnable in suitable
bearings within a casing a casting or receiving and distributing pipe or chamber
to which is connected a set of coiled tubes. The receiving pipe is by a partition
internally divided into two compartments, one of which communicates with a
main inlet opening in the casing and with the inlet or receiving ends of the
coiled tubes, the other compartment communicating with a main outlet opening
and with the outlet or discharging ends of the coiled tubes. The connections
between the main inlet and outlet openings, and the receiving pipe, may be
formed by means of flexible pipes, or by rigid pipes which also form bearings for
the receiving pipe or chamber, or the ends of the chamber may be fitted in stuff-
ing box bearings formed on the casing the main inlet and outlet pipes communica-
ting with the internal compartments through the stuffing boxes and end openings
in the chamber. When the apparatus is used for example as an evaporator
steam is made to pass through the inlet connection into one of the compartments
of the receiving pipe or chamber and through the coiled tubes, water due to con-
densation passing off from the other compartment of the chamber to the outlet
pipe. In some cases as in a condenser the cold fluid may pass through the coiled
tubes, the hot fluid being on the outside of the tubes. When the door of the
casing is opened the flexible pipe connections, or other suitably arranged bearing
connections, permit the set of coiled tubes with their internally divided receiving
chamber to be turned more or less round to either side so that the coiled tubes
may become almost entirely external to the casing thereby enabling the tubes
to be examined and cleaned with great facility.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append three sheets of explanatory
drawings to be hereinafter referred to in describing the improvements.
Figure, 1, on Sheet, 1, of the drawings is a horizontal section, and Figure, 2,
on Sheet. 2. is an inner front elevation of the improved apparatus. Figure, 3,
is a vertical section of a detail in connection therewith. Figures, 4, and 5, on

page_text: Sheet, 3, are views similar to Figures, 1, and 2, of another modification of the
improvements.
In these drawing the same reference letters and numerals are used to mark
the same or like parts wherever they are repeated.
According to the invention the casing, A, of the apparatus is semi-cylindrical
in cross section, and is formed with an opening provided with a door B. In a
suitable position within the casing, A, as shown there is arranged a receiving
and distributing pipe or chamber, C, formed with end trunnions, C1, fitted to
turn in bearings, 11, 12, formed at each end of the casing. The receiving pipe,
is by a partition, C2, (Figure, 3) internally divided into two compartments, C3, C4
communicating respectively with main inlet and outlet openings, E1, E2, in the
side of the casing, A. The connections between these openings and the receiving
pipe, C, may be formed as shown in Figures, 1, and 2, by means of flexible
pipes, G1, G2; or by rigid pipes, G3, G4 as shown in Figures 4 and 5. In the
latter arrangement the pipe joints, G5, G6, formed at each end. of the receiving
chamber, C, also serve as bearings on which the chamber can turn, detachable
clamping devices, G7, being provided for fixing the pipes to the chamber. Or
the rigid pipes may be formed so that the ends of the chamber, C, formed as
trunnions, may fit into them, openings being provided in the sides of the trun-
nion parts of the chamber to communicate with the pipes. Several coiled tubes, H,
are jointed or fixed to the receiving chamber, C, by coupling nuts, H1, and the
tubes are bended or coiled as shown so as to occupy more or less of the space in
the casing, A. Each coiled tube has one end fixed in communication with one
compartment, C3, of the receiving chamber, C. and the other end with the other
compartment, C4, of the chamber. When the apparatus is employed as an evapo-
rator, steam for evaporating purposes enters by an inlet pipe, E3, connected to
the inlet opening, E1, passing through the flexible tube connection, G 1, or other
suitable connection into the compartment, C3, of the receiving chamber and
through the several coiled tubes into the other compartment, C4, of the chamber
water due to condensation passing off from this latter compartment by the flex-
ible tube, G2, or other suitable connection to the outlet pipe, E4. The vapor
formed from the water being evaporated in the tube casing, A, rises into an upper
casing or dome, A 1, partly shown in Figure, 2, and is thereafter discharged and
utilised as desired. When the apparatus is employed as a condenser the cold
fluid is arranged to pass through the coiled tubes, the hot fluid being in contact
with the outside of the tubes.
When the door, B, of the tube casing, A, is opened the flexible tubes, G 1, G 2,
or other suitably arranged bearings connections as herein before described, per-
mit the set of coiled tubes, H, with their internally divided receiving chamber, C
to be turned more or less round so that the coiled tubes may become almost
entirely external to the casing, thereby enabling the tubes to be examined and
cleaned with great facility. Or if desired the coiled tubes with the chamber, C,
may be further removed from the casing by detaching the chamber from its bear-
ings and disconnecting the flexible tubes when such are used. If it is not desired
to disconnect them, however, they must be made of sufficient length to provide
for the complete withdrawal of the chamber and coiled tubes.
The coiled tubes may be formed of ordinary round section, or of elliptical or
similar section, and they may also in some cases be made of flexible tubing.
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 evaporating condensing or feed-heating apparatus a receiving and distribu-
ting pipe or chamber, turnable in bearings within a casing, and internally divided
into two compartments, one being connected to a main inlet, and to the inlet or
receiving ends of a set of coiled tubes, and the other to a main outlet, and to
the outlet or discharging ends of the coiled tubes, flexible tubes or other suitable

page_text: connections connecting the receiving chamber, with the main inlet and outlet
openings in the side of the casing, the parts being constructed arranged and
operating substantially as and for the purposes herein before described with
reference to the accompanying drawings.
1000
EDMUND HUNT,
Applicants' Agent.