Improvements in Precipitators for Impurities in Exhaust Steam.
Year: 1890

page_text: ate of Application, 19th Nov., 1890-Accepted, 7th Feb., 189
COMPLETE SPECIFICATION.
Improvements in Precipitators for Impurities in Exhaust Steam.
I CHARLES ARTHUR MACDONALD of 118 North Canal Street, Chicago,
Illinois, United States of America, Mechanical 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:-
This invention relates to devices for precipitating and thus collecting or
extracting the oil and other impurities from exhaust steam so that the same can
then he subsequently used for the manufacture of ice in the ordinary manner of ice
machines.
It is illustrated in the accompanying drawing by a single cross section view.
A is an exterior or enclosing chamber of any desired shape, preferably cylindrical,
having the upper end B with the screw threaded aperture C'therein and the lower
end D with a similar screw threaded aperture, also a draw off aperture E.
F is a
pipe which enters through the screw threaded aperture in the bottom D and
proceeds preferably to a point about two thirds above the bottom of the cylinder.
Gis an inner inverted cup supported within the cylinder its top F a short distance
above the top of the pipe F.
This cylinder is supported in this position by means of the funnel shaped
perforated diaphragms J, K, L and M.
These diaphragms are shown perforated in cross section, and certain other
perforations shown on diaphragm J; they should be perforated throughout, it not
being necessary to show this in the drawing. More or less of such diaphragms
might be employed, and they are preferably placed as shown in the drawing diagonal
to the course of the steam as it passes through them. The device could be
greatly changed in its structure without materially departing from the spirit of the
invention.
The use and operation of my invention are as follows:
The steam pipe which conducts the exhaust or other steam which is subsequently
to be condensed for the manufacture of ice is attached, for example, to the
aperture C and in that case from the pipe F leads another pipe to the point of
condensation of the steam; or the supply pipe could be attached to the pipe F and
the pipe leading to the point of condensation to be attached to the aperture C. If
the steam is supplied from the aperture C the operation is as follows:
It first strikes upon the top H of the cup G and is thence diverted so as to
descend through the perforated funnel shaped diaphragm J thence through the annular
passage way between the walls of the cylinder A and cup G through the perforated
diaphragm K, thence upward through the perforated diaphragm L within the cup G,
against the top thereof, and thence down through the pipe F and away to the place
of condensation.
As the steam impinges against the head H it will deposit a certain portion of its
oil and other impurities they being gradually driven toward the edge of such top
and thence passing down along the side of the cup G. As it passes through each
of the perforated diaphragms the steam also deposits upon such diaphragms large
portions of its impurities and such impurities so deposited ultimately find their way
down along the side of the cylinder A, cup G and pipe F and along the various
diaphragms until such impurities are ultimately collected in the lower portion of
the bottom D whence they may be drawn off through the aperture E. If the steam
is supplied through the pipe F, the operation is substantially the same, the first
deposit being made on the top H of the cup G, and then on the diaphragm M,
bottom D, diaphragm K diaphragm J and inner side of the top B whence it flows
back upon the top of the cup G. Other diaphragms may be used or some of these

page_text: may be dispensed with according to the extent and character of the impurities in the
steam which it is sought to cleanse and it will be obvious that the arrangement of
these diaphragms could be greatly changed.
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 a precipitator the combination of a closed case preferably cylindrical and
having an aperture at one end with a pipe extending therein from the other end, a
cup shaped portion over the inner end of such pipe and a series of diaphragms
inclined to the axis of the case and placed between the adjacent walls of the pipe
and the cup and the cup and the case so that the current of fluid will persue a
circuitous path through such case and through a series of diaphragms arranged at
angles to the line of motion of such current.
2. In a precipitator the combination of a closed case preferably cylindrical and
having an aperture at one end with a pipe extending therein from the other end, a
cup shaped portion over the inner end of such pipe and a series of diaphragms
placed between the adjacent walls of the pipe and the cup and the cup and the case
so that the current of fluid will persue a circuitous path through such case and
through a series of diaphragms.
3. A precipitator substantially as shown and described and for the purposes set
forth.
בד
FREDERIC PRINCE,
1, Quality Court, Chancery Lane, London, Agent for Applicant.