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Патент USA US2406441

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Aug. 27, 11946.
Filed Apr-i1 15, 1942
Patented Aug. 27, 1946
Claude B. Schneible, Detroit, Mich.
Application April 13, 1942, Serial No. 438,741
2 Claims. (01. 183—77)
This invention relates to separating apparatus.
It is particularly useful in the separating of
foreign or solid particles carried in a gaseous
tudinally of the fan. The cells provided by vanes
I‘! with their associated plates are longer and
wider than the cells provided by vanes l8 and
their associated plates, while the cells provided
by vanes I9 with their associated plates are still
smaller than the cells described.
Brace rods 20 are secured, as shown, to the
hub portion l2 and to the outer plate I6, as shown
best in Fig. 1.
medium. The apparatus may be used for elimi
nating solid particles carried in heated gases
from blast furnaces, cupolas, cement furnaces,
and particle-laden air from many other struc
tures. Other speci?c uses will be obvious.
An object of the invention is to provide ap-.
paratus which will effectively eliminate solid or 10
foreign particles carried in a medium, the me
In the operation of the apparatus, the gaseous
dium being withdrawn free of such particles. A
medium containing particles is drawn by means
further object is to provide apparatus in which
of the fan II, or any other source of suction,
a separator element is provided with improved
inlet A’. The rotation of the ?lter fan
means whereby foreign or solid particles will be
C rejects the solid particles suspended in the gas
rejected and freed from a withdrawn stream of
stream at the point of entrance thereto and allows
medium. Other speci?c objects and advantages
only the medium freed of the particles to pass
will appear as the speci?cation proceeds.
the outlet A’.
The invention is illustrated, in a preferred em
The ?lter fan 0 is extremely efficient in this
bodiment, by the accompanying drawing, in 20 operation
by reason of the longitudinally-dis
formed by vanes extending between
Figure 1 is a transverse sectional view of ap
the annular plates. Since the air must pass
paratus embodying my invention; and Fig. 2, a
through the rectangular passageways provided
rear view of the refuser wheel or separator fan.
In the illustration given, A designates a casing 25 in the ?lter fan by the arrangement of annular
plates and vanes, a variable ‘drop in pressure
providing an outlet A’; B, a driven shaft; and C,
a ?lter fan.
The casing A may be of any suitable construc
tion. It may, if desired, provide a chamber about
the fan G into which particle-laden gas is drawn,
It may also provide a fan casing III in which a
suction fan I I or other suitable means for creat
ing a suction is secured. The fan C is positioned
so as to guard the opening A’ and is mounted
on the shaft B by which it is rotated.
The ?lter fan 0, constituting my invention
herein, comprises a hub portion I2, to the outer
would be sustained in the different rectangular
passages if they were all of the same width, as
a result of the difference in their length. This
difference in pressure drop, due to the different
lengths of the rectangular openings, is over
come by increasing the openings in width in pro
portion to their length, as shown more clearly in
Fig. 1.
While in the foregoing description, I have set
forth certain details of structure for the pur
pose of illustrating the invention, it will be un
end of which is secured a shroud plate l3.
derstood that all of the details are not essen
vanes I8 which are shorter and narrower than
vanes I1. Between plates 15 and I6 are vanes
[9 which are shorter and narrower in width than
trifugal separator wheel carried by said shaft
vanes I8.
with said outlet opening, said wheel comprising
tial and that the same may be eliminated or
Spaced inwardly from the plate I3 are annular
plates I4, I5 and IS. The plate I4 has an in 40 substitutions employed therefor without depart
ing from the spirit of my invention.
side diameter less than that of plate I 5, and plate
I claim:
I5 has an inside diameter less than that of plate
1. In apparatus in which a casing is provided
I6. Between plates l3 and I4 are a plurality of
with an outlet opening and a rotatably-mount
spaced vanes I'I. Between plates I4 and I5 are
It will be noted that with the structure shown,
the interior of the ?lter fan is hollow, the open
ing therein tapering rearwardly toward the out
let A’, thus providing an outlet which enlarges
as it nears the outlet A’. The vanes I'I, I8 and
ed shaft extends in front of said opening, a cen
and having a central opening communicating
‘ a hub carried by said shaft, an end plate clos
ing the inner end of said wheel, annular plates
spaced from each other and said end plate, vanes
between said plates forming longitudinally
spaced cells of varying cross section and through
which the medium must pass to reach the cen
I9 extending between the plates I3, I4, I5 and
I6 provide a series of radial cells spaced longi 55 tral opening of said wheel, said longitudinally
spaced cells being shorter and narrower toward
from each other and said end. plate, the spac
said outlet opening.
ing between said plates being progressively less
2. In apparatus in which a casing is provid
toward said opening, said annular plates being
ed with an outlet opening and a rotatably
of different inner diameters, causing the open
mounted ‘shaft extends in front of said open- 7 5 ing in said wheel to ‘be progressively larger as it
' ing, a centrifugal separator wheel carried by said
approaches said outlet opening, and vanes be
shaft and having a central opening’ communi
tween said plates and forming with said plates
longitudinally spaced cells which are shorter and
eating with said outlet opening, said wheel com
prising an end plate closing the inner end of
narrower toward said outlet opening.
[said wheel, a plurality \of annular plates ‘spaced 10
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