Improvements in Feed Water Heaters.
Year: 1892

page_text: Date of Application, 27th May, 1892
Complete Specification Left, 31st Jan., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Feed Water Heaters.
I, JOSEPH BELL of Troutdale, in the County of Multnomah, State of Oregon,
United States of America, Engineer, do hereby declare the nature of this invention
to be as follows:-
This improved feed water heater comprises an upright, preferably cylindrical,
casing connected near the lower part to the exhaust steam pipe of an cugine or
other apparatus and open at the top. Within the casing and above the entrance
of the exhaust pipe are preferably radial vertical plates, either provided on both
faces with semi-cylindrical or like projections increasing in size from the top to
the bottom and located suitable distances apart and below each such projection is
a transverse row of perforations in the plates to prevent the water from flowing
rapidly down the plate after leaving the said projections. Or the plates may be
without projections and be arranged spirally, to impart rotatory motion to the
steam passing upward through the casing. The projections are increased in size
from top to bottom so that the water will drip from one to the next and not
straight down into the lower part of the casing without touching the plates or
their projections, in flowing down which the water is brought in contact with the
steam rising within the casing between the several vertical plates. The plates are
fastened to the casing. On the upper end of each plate, and on the opposite faces
of the same, discharge deflector plates, each made in the shape of the frustum of a
cone, are arranged horizontally so that the edges extend in close proximity to the
faces of the plate. Centrally within the upper end of the casing and above the
deflector plates is a distributor made in the shape of a double cone.
The upper
cone has a downwardly-extending flange reaching to within a short distance of the
casing and serving to guide the water over the edge of the cone on to the deflector
plates by which the water is conveyed to the faces of the vertical radial plates.
U₁
Upon the apex
of the upper cone discharges the nozzle of a water supply pipe and
on this pipe is a valve, the valve seat being a vertical partition in the valve casing
having radial openings with which register corresponding openings in the rotary
valve disc. A spring presses the valve on its seat, the said disc being mounted on
a spindle journaled in a stuffing box, stops being provided to limit the movement
of the disc. The valve is operated by a float within the lower part of the feed
water heater through the medium of bell crank and other connections, so as
to shut off the water supply when the water level rises in the feed water beater
casing and open it when the level falls. In the lower part of the casing is an over-
flow discharge pipe, the centrally rising mouth of which is surrounded by a cup
which is in turn enclosed by a bell or hood, so that the water will pass up between
the cup and hood and flow over the edge of the cup into the discharge pipe
which
rises therein. By this means, scum, oil, and other impurities, contained in the
water are prevented from passing into the discharge pipe which connects with a
pump or other device for returning the water to a filter located centrally within
the casing of the feed water heater so as to avoid loss of beat by radiation and
discharging into the boiler. In the filter casing are a series of perforated trays
one above the other, the spaces between being filled with filtering material. Each
perforated tray is supported on a ring connected by lugs to a second ring carrying
posts resting on the next lower tray. Into the lower end of the casing discharges
a steam pipe for admitting steam to the casing to clean the filtering material, the
upper end of the casing being connected with an outlet pipe for carrying off the
sediment when the filter is cleaned by the steam entering at bottom. In the lower
part of the feed water heater is a skimming device connected with an outlet pipe,

page_text: said skimmer being a sleeve fitted to slide telescopically within certain limits on
the rising end of the outlet pipe, said sleeve having a flared upper edge over which
the scum can flow easily into the outlet pipe and being supported by floats at the
proper level to gather the scum accumulating on the surface of the water, the floats
being adjustable so as to be set in proper position relatively to the sleeve according
to the condition of the water. The central part of the casing being taken up by
the filter, the latter is heated by the exhaust steam which must necessarily pass up
between the filter and casing and so come in contact with the water flowing down
the deflector plates and consequently the feed water passes in a filtered and heated
state into the boiler.
Dated this 27th day of May 1892.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Feed Water Heaters.
I, JOSEPH BELL of Troutdale, in the County of Multnomah, State of Oregon,
United States of America, 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 :-
The object of this invention is to provide a new and efficient feed water heater
of simple and durable construction wherein the feed water is heated by means of
the exhaust steam of the engine or other steam user.
Reference is to be had to the accompanying drawings, forming part of this
Specification, in which Figure 1 is a side elevation of the feed water heater.
Figure 2 is a vertical sectional elevation of the same, on line 2-2, Figure 3.
Figures 3 to 10 are detail views of the same, drawn to a larger scale than Figures 1
and 2, Figure 3 being a horizontal section, on line 3-3, Figure 2.
Figure 4 is a vertical sectional clevation of the skimmer, on line 4-4, Figure 2;
Figure 5 is a cross-section of the same, on line 5-5, Figure 4;
Figure 6 is a part sectional elevation of one of the filter bottoms;
Figure 7 is an edge view of the upper end of one of the vertical plates and the
deflector ;
Figure 8 is a horizontal section of the inlet valve ;
Figure 9 is a vertical section of the same, on line 9-9, Figure 8;
Figure 10 is a back view of the valve disc, the valve stem being in section on
line 10-10, Figure 8;
Figure 11 is a vertical sectional elevation of a modified form of the feed water
heater, and
Figure 12 is a horizontal sectional view of part of the same, on line 12-12,
Figure 11, drawn to a larger scale.
Similar letters of reference indicate corresponding parts in all the figures.
The improved feed water heater comprises an upright, preferably cylindrical,
casing A connected near the lower part with the exhaust steam pipe B of an engine
or other apparatus and open at the top. Within the casing A and above the
entrance of the exhaust pipe B are arranged a series of upwardly-extending vertical
plates C provided on both faces with semi-cylindrical or like projections D having
Hanges rivetted or otherwise secured to the said plates, as illustrated in Figures 2
and 3, the said projections being of progressively increasing size from the top to
the bottom and located at suitable distances apart, there being formed in the plates C
below each projection D a transverse row of perforations E to prevent the water
from flowing rapidly down the plate after leaving the said projections D. Or the
said plates C may be without projections and be arranged spirally, as shewn in
Figures 11 and 12. In this case, the steam in passing upward through the casing A

page_text: eceives a rotary motion by coming in contact with the spirally-arranged plates.
The plates C are fastened to the inner wall of the casing A and are preferably
arranged radially, as illustrated in Figure 3. On the upper end of each plate C
and on the opposite faces of the same, discharge deflector plates F, each made in
the shape of the frustum of a cone, are arranged horizontally so that the edges
extend in close proximity to the faces of the plate C, as illustrated in Figure 7.
Centrally within the upper part of the casing and above the deflector plates F, is a
distributor G made in the shape of a double cone, the bases of the two cones G¹
and G2 being attached together, as illustrated in Figures 2 and 11. The upper
cone G has a downwardly-extending circumferential flange G³ reaching to within
a short distance of the casing A and serving to guide the water over the edge of
the cone on to the deflector plates F by which the water is conveyed to the faces
of the plates C above the uppermost pairs of projections D. Upon the apex G* of
the upper cone of the distributor G discharges a nozzle H¹ connected with the water
supply pipe H, and on this pipe H is a valve I, illustrated in detail in Figures 8, 9,
and 10, the valve casing I being provided with a vertical partition or seat 12 having
radial openings I3 with which corresponding openings I in a rotary disc valve I'
seated against the face of the partition 12 are adapted to register. A spring I* presses
the valve I on its seat I2, the said valve being mounted on a stem I' journaled in a
stuffing-box on the valve casing. The disc I' is provided with a stop 18 which
engages in a corresponding recess in the seat 12 to limit the movement of the disc.
On the outer end of the valve stem I' is secured a weighted lever J to the other
arm of which is jointed a link J' whose other end is connected with a bell crank
lever J pivoted on a bracket secured to the casing A, said lever J' being connected
with a rod J³ passing through a stuffing box to the interior of the casing A where
it is connected with a bell crank lever J, carrying a float J' so that when the water.
level rises in the casing A and raises the said float J the motion of the bell crank
lever J is transmitted by the parts above described to the lever J so as to turn the
valve stem 17 and close the valve Is, thus shutting off the water supply, the reverse
action taking place when the water level in the casing A. falls. In the lower part
of the casing A is arranged an overflow pipe L, connected to a discharge pipe K,
the rising mouth of the overflow pipe being surrounded by a cylindrical cup L³
closed at the bottom and surrounded in turn by a bell or hood L provided with a
preferably cone-shaped top L2, as shewn, the cylindrical part L' rising above the
upper edge of the cylindrical cup L³, so that the water in the casing A will pass up
between the hood L' and the cup L³ and flow over the edge of the cup L³ into the
overflow L and out through the discharge pipe K. By this means, scum oil and
other impurities contained in the water are prevented from passing into the discharge
pipe K, as the cylindrical hood L' and its cap L2 prevent the accumulating
impurities from passing into the said pipe. The outlet pipe K instead of connecting
directly with the boiler connects with a pump or other device for returning the
water to a pipe N discharging into the upper end of a filter O located centrally
within the casing A above the exhaust pipe B, as shewn in Figure 2, the bottom
of the casing 0 of this filter being connected with a pipe P which discharges into
the boiler. In the filter casing O₁ are arranged a series of perforated trays 0³
located one above the other, the spaces between the same being filled with a suitable
filtering material 0³, as indicated in Figure 2. Each perforated tray O2 is
supported near its outer edge on a ring connected by lugs with a second ring
carrying posts resting on the next lower tray, the said posts being of a length
Into the lower
corresponding to the distance between the two successive trays.
end of the casing 01 between the bottom and the first tray discharges a steam
pipe for admitting steam to the casing to clean the filtering material, the
upper end of the casing O' being connected with an outlet pipe R for carrying off the
sediment when the filter is cleaned by the steam entering through the pipe Q. It
is understood that when this takes place the feed pump is stopped and the pipe N
is shut off by a suitable valve so that the sediment readily flows through the

page_text: pipe R. In the lower part of the casing A is arranged a skimming device S con-
nected with an outlet pipe S¹ leading to the outside of the casing, said skimming
device being a sleeve T fitted to slide upon the rising end S2 of the outlet pipe and
provided with internal flanges T¹ fitting closely on the pipe S2, the upper end of
the sleeve T being formed with a bell-shaped mouth T2 to permit the scum to
readily enter it and pass into the pipe S². On the upper end of the pipe S² is an
exterior flange S³ adapted to be engaged by the next lower flange T of the
sleeve T so as to limit the upward sliding motion of the sleeve T. Upon the
sleeve T is fixed a clam U provided with arms U₁ carrying floats U2 which rise
and fall with the water in the casing A so as to hold the bell-shaped mouth T2 of
the sleeve T at the proper level to gather the scum accumulating on the surface
of the water in the casing A, the floats U2 being fixed adjustably on the sleeve T
by means of the clamp U so as to be set in proper position relatively to the
sleeve T according to the condition of the water accumulating in the lower part of
the casing A. The casing A is provided with a door A¹ opposite the filter O so
as to permit ready access to the filter and interior of the casing to examine the
several parts of the various devices above described. The filter O is located within
the casing so as to prevent loss of heat by radiation. The projections D are
increased in size from top to bottom so that the water will drip from each to the
next below and not straight down into the lower part of the casing without
touching the plates or their projections. In flowing slowly down the distributor G,
plates C, and projections D, the water is brought in contact with the steam rising
within the casing between the several vertical plates C. The central part of the casing
being taken up by the filter O the latter is heated by the exhaust steam which
must necessarily pass up between the filter O and casing A and so come in contact
with the water flowing down the plates C and projections D and consequently the
feed water passes in a filtered and heated state into the boiler. It will be seen
that the lower cone G' serves to guide the upwardly-passing steam to the sides of
the casing so as to meet the water flowing over the edge of the distributor G before
the said steam passes out through the open top. When the water has accumulated
in the lower part of the casing A so that its level is above the upper edge of the
cup L³, it overflows into pipe L and out through pipe K to the pump. The supply
of water through the pipe H is regulated by the float J' which opens and closes
the valve I, according to the height of the water in the lower part of the casing A.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. A feed water heater comprising a casing connected at its lower part with a
steam supply, upwardly-extending deflector-plates in the casing above the inlet of
the steam supply, and a water-distributor above the deflectors and discharging
thereon, substantially as for the purpose set forth.
2. A feed water heater comprising a casing connected at its lower part with a
steam supply, plates arranged vertically in the said casing and provided with pro-
jections, and deflector plates discharging upon the upper ends of the said vertical
plates, substantially as shewn and described.
3. A feed water heater comprising a casing connected at its lower part with a
steam supply, plates arranged vertically in the said casing and provided with pro-
jections, deflector plates discharging upon the upper ends of the said vertical plates
and a water distributor above the said deflector plates and discharging thereon,
substantially as shewn and described.
4. A. feed water heater provided with a casing and vertical plates each having
projections increasing in size from top to bottom, substantially as shewn and
described.
5. A feed water heater provided with a casing connected at its lower part with
a steam supply and provided with a series of vertical plates arranged radially on

page_text: the wall of the said casing, each plate being provided with projections placed suitable
distances apart and increasing in size from top to bottom, substantially as shewn
and described.
41
6. A feed water heater provided with a casing connected at its lower part with
a steam supply and provided with a series of vertical plates arranged radially on
the wall of the said casing, each plate being provided with projections placed suitable
distances apart and increasing in size from top to bottom, the said vertical plates
being also provided with perforations below the projections, substantially as shewn
and described.
7. In a feed water heater, an inlet valve, comprising a valve body having an
apertured partition, a valve disc having apertures and seated on the said partition,
a spring pressing on the said valve disc, and means for turning the disc, substan-
tially as shewn and described.
8. In a feed water heater, the combination, with a casing, of plates secured
vertically in the said casing and deflector plates arranged between the upper ends
of adjacent plates and made in the shape of frusta of cones located horizontally
the edges of the cones discharging on the faces of the plates, substantially as shewn
and described.
9. A feed water heater provided with vertically arranged plates carrying pro-
jections made semi-circular in form and secured on the said plates one above the
other, the said projections increasing in size from top to bottom, and deflector
plates made in the shape of frusta of cones located between two adjacent plates and
discharging at their edges on the faces of the vertical plates, substantially as shewn
and described.
10. A feed water heater comprising a casing connected in its lower part with a
steam supply, vertical plates secured in the said casing and provided with projec-
tions and a filter arranged within the said casing above the entrance of the said
steam supply to cause the steam to pass upward between the said plates, substan-
tially as shewn and described.
11. A feed water heater provided with a skimmer comprising an outlet pipe
having a vertical extension, a sleeve fitted to slide on the extension and having a
bell-shaped mouth, and floats secured to the said sleeve, substantially as shewn and
described.
12. A feed water heater provided with a skimmer comprising an outlet pipe
having a vertical extension, a sleeve fitted to slide on the said extension, a clamp
engaging the said sleeve, and floats projecting from the said clamp, substantially as
shewn and described.
1000
101-
1802
J. BELL,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.