Improvements in Steam Generators.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
I, HENRY COURTEEN, of Eversleigh, Potterne Road, Devizes, in the County of
Wilts, Engineer, do hereby declare the nature of this invention to be as
follows:-
The
My invention relates to what are frequently known as instantaneous steam
generators and to that class of such generators wherein metal plates adapted
to be bolted or otherwise secured together have in the faces which are in con-
tact, a groove or channel or grooves or channels, for the water and steam.
objects of this invention are to provide means whereby a greater length of
channel can be obtained in a given space and whereby the jointing of the plates.
to render them steam-tight is facilitated.
According to my present invention I employ three, five or other odd number
of plates in a generator. In practice, however, I prefer to use three plates.
These three plates are placed face to face and the inner surfaces of the outer
plates or the two surfaces of the intermediate plate, or both, are grooved or
channelled in the desired manner to afford a passage for the water and steam,
the passage on one side of the intermediate plate being preferably connected with
the passage on the other side of the intermediate plate so that the water which is
introduced into one passage, after being more or less vaporized therein, passes
into the other passage wherein it is further vaporized, or superheated.
Instead of forming a channel in the two surfaces of the intermediate plate I
in some cases form a channel completely through the intermediate plate. In
this case the inner surfaces of the outer plates are preferably plain.
The use of this intermediate plate is of great advantage for the formation
of the joint between the plates especially when the outer plates are made of
cast metal, or the intermediate plate, being made of say wrought metal, permits
of the joint being closed by caulking.
Although in the foregoing description I have referred to the use of plates it
is to be understood I do not confine myself to the use of flat plates as I may,
with equal advantage, use plates which are of cylindrical, spherical, conical or
other suitable form, provided always that the several plates of a generator are
so shaped as to ensure their faces corresponding in the desired manner when
assembled.
In the latter case the several sections or plates of the generator are preferably
formed with flanges at the outer edge to permit of their being bolted together and
readily separated.
It will be obvious that a number of members formed as herein described may
be connected together to form a single generator.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.

page_text: The water to be
and after having heated them escape through the flue o.
vaporized enters the lowermost compound plate at p through the aperture k
therein, passes first into the passage e, Figure 5, then through one series of the
grooves or channels d, into the passage f, thence through the second series of
grooves or channels to the passage through the aperture j, Figure 6, in the
middle plate into the passage in the top plates Figure, through the two
series of grooves or channels & therein into the passage i and thence through the
aperture and pipe m, Figure 1, to the next compound plate above and so on,
thereby becoming vaporized in its course and eventually passing out from the
uppermost compound plate at q.
Instead of forming a channel in the two surfaces of the intermediate plate_I
in some cases form a channel completely through the intermediate plate. In
this case the inner surfaces of the outer plates are preferably plain.
The use of this intermediate plate is of great advantage for the formation
of the joint between the plates especially when the outer plates are made of
cast metal, as the intermediate plate, being made of say wrought metal, permits
of the joint being closed by caulking at t.
Although in the foregoing description I have referred to the use of plates it
is to be understood I do not confine myself to the use of flat plates as I may,
with equal advantage, use plates which are of cylindrical, spherical, conical or
other suitable form, provided always that the several plates of a generator are
so shaped as to ensure their faces corresponding in the desired manner when
assembled.
For example I may make the plates conical as illustrated in Figure 9 in which
the two outer plates a, bare plain and formed with flanges r, s respectively whereby
they are bolted together as shewn, a continuous channel d for the water to be
vaporized being formed by cutting a spiral channel d completely through the
intermediate plate c. The water enters the lower end of the channel through
the pipe and passes off from the upper end in a vaporized condition through the
pipe 7.
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:-
1. A steam generator comprising an uneven number of plates fitting one
against the other, the intermediate plate (in the case of a generator having three
plates) or the alternate plates (in the case of a generator having a greater number
of plates) being grooved or slotted or the surfaces in contact therewith grooved
or slotted so as to form a passage or passages for the water and steam, the said
intermediate plates or the alternate plates being of a metal capable of being
jointed to the adjacent plates by caulking, substantially as described.
2. A steam generator comprising an odd number (say three) of plates grooved
or channelled to form internal passages, those on one side of the middle plate
being in communication with those on the other side of the said plate, sub-
stantially as hereinbefore described and illustrated.
3. A steam generator composed of three or other odd number of plates the
intermediate or alternate plates being slotted so as to form with the adjacent
plates a single passage, substantially as described.
4. The improved steam generators hereinbefore described and illustrated
respectively in Figures 1 and 2. Figures 3 to 8 and Figure 9 of the accom-
panying drawings.