Improvements in Apparatus for Heating, Cooling, and Condensing Fluids.
Year: 1890

page_text: Date of Application, 15th Feb., 1890
Complete Specification Left, 17th Nov., 1890-Accepted, 17th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Heating, Cooling, and Condensing
Fluids.
I WILLIAM ROBERT RENSHAW of Union Foundry, Kidsgrove in the County of
Stafford, Engineer and Ironfounder do hereby declare the nature of this invention to
be as follows:-
In apparatus for heating, cooling and condensing fluids it is desirable to obtain the
greatest possible surface in as small a space as is practicable and for this purpose it
has been proposed to employ two sets of tubes, one within the other so that a heating
or cooling effect is obtained both inside and outside the annular space between them.
My invention relates to a convenient form of apparatus of this class.
For convenience I will describe the apparatus as a condenser although it will be
understood that it is suitable for other purposes.
The apparatus consists of an outer casing within which cold water is circulated.
Inside this casing at the top and bottom, are two boxes the upper one receiving the
exhaust steam and the lower one being connected to the air and condensed water
pumps. The sides of these boxes nearest to each other are connected together by
tubes and their sides furthest from each other are connected together by smaller tubes
within the other tubes so that the interior of the two boxes communicate through the
annular spaces between the two sets of tubes. The boxes are connected to the outer
casing by means of lips or plates which have a certain flexibility to allow for expansion
and contraction. The inlet and outlet pipes are connected to the outer casing at the
same places as the flanges supporting the boxes, the two being bolted together thus
insuring tight joints between the inlet and outlet pipes and the boxes.
1
1
1000
W. R. RENSHAW.
COMPLETE
SPECIFICATION.
Improvements in Apparatus for Heating, Cooling, and Condensing
Fluids.
I, WILLIAM ROBERT RENSHAW, of Union Fountry, Kidsgrove, in the County of
Stafford, Engineer and Ironfounder, 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:-
In apparatus for heating, cooling and condensing fluids it is desirable to obtain the
greatest possible surface in as small a space as is practicable and for this purpose it.
has been proposed to employ two sets of tubes, one within the other so that a heating
or cooling effect is obtained both inside and outside the annular space between them.
My invention relates to a convenient form of apparatus of this class.
For convenience I will describe the apparatus as a condenser although it will be
understood that it is suitable for other purposes.
The apparatus consists of an outer casing within which cold water is circulated.
Inside this casing at the top and bottom, are two boxes the upper one receiving the
exhaust steam and the lower one being connected to the air and condensed water
pumps. The sides of these boxes nearest to each other are connected together by
tubes and their sides furthest from each other are connected together by smaller tubes
within the other tubes so that the interior of the two boxes communicate through the
annular spaces between the two sets of tubes. The boxes are connected to the outer
casing by means of lips or plates which have a certain flexibility to allow for expansion
CD11

page_text: and contraction or the outer casing itself may be made flexible. The inlet and outlet
pipes are connected to the outer casing at the same places as the flanges supporting
the boxes the two being bolted together thus insuring tight joints between the inlet
and outlet pipes and the boxes.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a longitudinal vertical section of an apparatus constructed according
to my invention. Figure 2 is an elevation. Figure 3 a transvere section (on the
line Figure 1) and Figure 4 a plan of the same.
C
a is the outer casing through which cold water is circulated by the inlet and outlet
pipes bb. Inside this casing there are two boxes. Each box is built up of a pair of
tube plates and a ring ce¹ and c² respectively in the upper box and à d¹ d² in the
lower box. The rings 2 d2 are circular except at one place where they are formed
into pipes leading to the openings c³ d³ respectively in the case. The flanges of these
pipes are bolted to the case and support the boxes. Steam is admitted into the
upper box by the pipe and the condensed water and air are drawn out of the lower
box by the pipe d³. The tube plates c d forming sides of these boxes nearest to each
other are connected by the outer tubes e and the tube plates c¹ d¹ forming the sides
furthest from each other are connected by the inner tubes f. These tubes may be
fixed in the tube plates in any convenient and well known manner, in the arrange-
ment shewn in the drawings the tubes e are expanded into the holes in the tube
plates c and d whilst the tubes are secured by screw ferules.
Figures 5 to 8 show a modification and are similar views to Figures 1 to 4
respectively.
The foregoing description applies to this apparatus also but in place of the boxes
being flexibly attached to the casing a they are rigidly attached to it all round their
circumferences, the casing itself being made flexible by means of the corrugation a¹.
This admits of the boxes being made larger thus giving space for a greater number
of tubes. As in this apparatus the tube plates are of the same diameter as the casing
it is necessary to provide means for allowing the cold water in the casing to pass
them. This is done by the tubes g g which connect the two tube plates of each box.
In this arrangement there are two pipes ³ ³ and d³ d³ leading into each box.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
:-
"
1. In apparatus for heating cooling and condensing fluids the combination of an
outer casing and two boxes whose sides nearest to each other are connected by one
set of tubes and whose sides furthest from each other are connected by another set
of tubes, the tubes of one set being within the tubes of the other set substantially as
described.
2. Apparatus for heating cooling and condensing fluids substantially as described
and shown in the drawings.
Dated this 15th day of Noromban 1800