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Патент USA US3080834

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March 12, 1963
J. A. BOYD ETAL
3,080,824
FLUID MOVING DEVICE .
Filed Feb. 27, 1961
TM"a;
Jamés A. Bad,
Clarence R. Posse/l,
INVENTORS.
W/MNN 41 M‘ MIN/641.
by
United States Patent
1
" ice
3,08?,824
Patented Mar. 12, 1963
2
3,080,824
.
James A. Boyd, 514 Dianthus, Manhattan Beach, Cah?,
FLUID MOVING DEVICE
and Clarence R. Possell, 15020 Dublin Ave, Gardena,
Calif.
Referring to the accompanying drawings, which are
for illustrative purposes only:
FIG. 1 is a fragmentary perspective view of a ?uid
moving device according to the present invention; and
FIG. 2 is a transverse sectional view through the same
showing the cooperative relationship of the component
Filed Feb. 27, 1961, Ser. No. 91,864
parts, taken substantially on line 2-2 of FIG. 1.
‘8 Claims. (Cl. 103-117)
_ Referring now more speci?cally to the drawings, the
The present inventionyrelates generally to a ?uid mov
?uid moving device of the present invention is shown as
ing device, and is more particularly concerned with a de 10 comprising an elongate casing of light material, and
vice for increasing the kinetic energy of the moved ?uid.
which is closed at its ends. The casing is provided along
Conventional devices have heretofore been constructed
one side with a longitudinally extending elongate inlet
for the pumping of liquids which utilize ?exible vanes of
opening 11, and along another side in substantially right
resilient material and super?cially are somewhat similar
angled relation with a longitudinally extending elongate
in appearance to the device of the present invention. 15 outlet opening 12.. _ _
g' v
‘
,
v
However, in the conventional devices the vanes were in
_ Placed within the casing is a cylindrical hub 13 which
contact with‘ the casing and where mechanically distorted ' ~ is carried by a shaft 14 rotatably supported in the casing
so as _to vary the vane shape and cause a decrease in the
in appropriate end bearingslgS. _As shown in FIG. '2,
volume of space betweenthe vanes and thereby raise the
the shaft 14' is'offset so that the hub 13' is in general in
pressure of the working. ?uid. Such structures due to 20 eccentric relation'to the casing and'is positioned in rela
thisjincreased pressure ‘had to be, strongly constructed of
tively close, proximity to one side ofthe casing, as indi
comparatively heavy materials, and in general were in i~ cated by the numeral 16, so as to cooperatively form
e?icient in operation as a result of their inherent design.
therewith a restricted chamber 17 on one side of the hub,
In contrast to the prior art devices, as generally exempli
one end‘ of thisrrestricted chamber communicating with
?ed above, the device .of the present invention is ar 25 the outlet opening 12 and the other end with the inlet
ranged to impart energy to the working ?uid in a dynamic
opening 11. On the diametrically opposite side from the
manner by utilizing ?exible non-resilient vanes, and by
restricted chamber portion 17, it will be observed that the
making use of centrifugal force and differential pressures
chamber portion as indicated by the numeral 18 is sub
in the ?uid stream to vary the shape and position of the
_stantially unrestricted, and that in this portion of the
vanes in such a manner that'it becomes unnecessary to 30 chamber the casing wall is in substantially concentric
‘have the vanes in engaged contact with the casing.
The unique construction of a ?uid moving device ac
cording to the present invention,‘ as brie?y described
relation throughout its length with respect to the hub sur
face.
The hub 13 carries a plurality of ?exible vanes 19 of
above, permits the accomplishment of outstanding ' ob
?exible non-resilient fabric of suitable material such as
jects including the following:
'
35 may be purchased under the trade name “Dacron.”
One object is to provide an improved ?uid moving de
The ?exible vanes 19 are secured along one edge to
'vice in which energy is dynamically imparted to the work
the hub 13 in any suitable manner, and are of such width
‘ing ?uid,‘ and more speci?cally wherein shaft horsepower
that they may extend radially from the hub into the
may'jbe' ‘changed to kinetic energy in the moved ?uid
economically.‘
'
.
V
chamber portion 18 without contacting the casing. The
40 ?exible vanes as they are successively moved alternately
, A‘Vfurther object'is‘to pr‘bvide a ?uid moving device of
through the restricted chamber portion 17 and the cham
such construction that the casing will operate at low pres
= ber portion 18 will change their shape, and while moving
"sure and permit the use ‘of light weight material, in which
primarily through the chamber portion 18 will transfer
a low weight'rotor using ?exible non-resilient vanes may
kinetic energy to the ?uid therein.
be utilized so as to produce an extremely light weight de 45
Considering the forces which are utilized to control
vice as compared to conventional structures.
the vanes, it will be seen that, for example, as a vane en
A further object is to provide a dynamic ?uid ‘moving 17" ters the inlet opening 11 as it emerges from the restricted
device ‘wherein'extremely low losses prevail with the re
chamber portion 17, the vane will be freed so that
sult that extremely high ei?ciencies will be obtained.
it may move as shown at position a under the action of
Another object is to provide a device of the character 50 centrifugal force into a radially extending position. Dur
described herein in which the total pressure of entering
ing this movement it will draw in air at the inlet and carry
‘?uid will be increased at the outlet, but wherein the static r: M. it through the chamber portion 18. When the vane
pressures will be approximately the same. That is _to
reaches the position indicated at b, the outermost edge of
say that the device will increase the velocity of the en
the vane begins to leave and move away from the eas
ftering ?uid, and discharge it at a high velocity having high 55 ing, and as it moves further toward a position 0, the dy
kinetic energy.
’
Still‘ another object is to provide a ?ap arrangement at
the outlet to control the momentum increase imparted to
namic back pressure at the outlet 12 concomitant to ac
celeration of the ?uid stream sets up differential pressures
which act on the vane and cause it to fold back and as
sume a substantially tangential position as it moves into
‘the working ?uid,- the power required to drive the device
at any particular speed, and the direction of discharge 60 the restricted chamber portion 17. The chamber por
‘of the ?uid at the outlet.
'
'
tion 17 is tapered from the end which communicates with
The above enumerated objects provide a ?uid moving 3’ the outlet 12 towards the end thereof which communi
device which is admirably adapted for utilization ‘in loca
cates with the inlet 11 so as to accommodate the sub
!-tions where the weight factor becomes aimaterial con
stantially tangential position of the vane therein with
sideration. For example the device is extremely well 65 out the vane having to make physical contact with the
adapted for use'in aircraft, and particularly in those types
casing. Since the vanes are at no time in contact with
of aircraft designed for vertical take-off or landing.
the casing, operational losses are materially reduced.
Further objects of, the invention will be brought out in
At the outlet opening 12, the device is provided with
the following part of the speci?cation, wherein detailed
one or more ?aps, in this case a pair of separately
description is for the‘ purpose. of fully disclosing the in 70 mounted ?aps .20 and 21 being shown, which may be
vention without placing limitations thereon.
'
moved into the dotted, line, positions so as to control the
3,080,824
3
momentum increase imparted to the working ?uid, the
4
sumo a substantially radial direction under the action
of centrifugal force upon entering the inlet, said vanes
power required to drive the device at any particular speed,
and control the direction of discharge of the outgoing
being dimensioned with respect to said casing such that
?uid. Adjacent the ?aps, the casing outlet is terminated
said vanes at the distal edges thereof clear said casing
when said vanes are in said substantially radial direc
to provide elongated slots or openings shown at 22 and
23. These openings provide passages for induced ?uid
tion, and a substantially tangential bent position under
flow into the discharge from the device for thrust aug
mentation and mass flow control.
the action of ?uid pressures adjacent the outlet before
entering the constricted portion, said vanes being held by
the inlet ?uid would have a total pressure which is
4. In a ?uid moving device, a rotatably mounted hub
member; a plurality of ?exible vanes of non-resilient ma
said ?uid pressure away from said casing in said con
It is contemplated that the ?uid moving device of the
present invention will be operated at higher speeds than 10 stricted chamber portion when in said bent position,
wiereby said vanes clear said casing during all rota
conventional types of devices, and that such speeds may
tional positions thereof.
be on the order of 3,000 to 7,000 rpm. In operation,
substantially atmospheric, while at the outlet the static
pressure will be substantially that of the atmosphere,
terial carried by said hub, said vanes having free unre
strained outer edges; a casing surrounding said hub form
ing an offset chamber with respect to the axis of rotation
of said hub, said casing and hub coacting to provide a
pounds per square foot.
constricted chamber portion on one side of the hub hav
Various modi?cations may suggest themselves to those
skilled in the art without departing from the spirit of our 20 ing communication at the ?rst end thereof in the direc
tion of hub rotation with a ?uid outlet and at the other
invention, and hence, we do not wish to be restricted to
end thereof with a ?uid inlet, whereby vanes leaving the
the speci?c form shown or uses mentioned, except to the
constricted chamber portion may assume a substantially
extent indicated in the appended claims.
radial direction under the action of centrifugal force
We claim:
1. In a ?uid moving device, a rotatably mounted hub 25 upon entering the inlet, said vanes being dimensioned with
respect to said casing such that the distal edges of said
member; a plurality of non-resilient ?exible vanes carried
vanes clear said casing when said vanes are in said sub
by said hub; a casing surrounding said hub forming a
stantially radial direction, and a substantially tangential
generally eccentric chamber with respect to the axis of
bent position under the action of ?uid pressures adjacent
rotation of said hub, said casing and hub coacting to
provide a constricted chamber portion on one side of the 30 the outlet before entering the constricted portion, said
vanes being held away from said casing when in said
hub having communication at the ?rst end thereof in the
constricted portion by said ?uid pressures, whereby said
direction of hub rotation with a ?uid outlet and at the
vanes clear said casing during all rotational positions
other end thereof with a ?uid inlet, whereby vanes leav
thereof.
ing the constricted chamber portion may assume a sub
5. A device for moving a ?uid and nonresilient im
stantially radial direction under the action of centrifugal
while the total pressure due to the kinetic energy im
parted to the ?uid will be raised to the order of 25 to 500
force upon entering the inlet, said vanes being dimen
sioned with respect to said casing such that when in said
parting kinetic energy thereto, comprising: an elongate
tubular casing having a longitudinally extending inlet
opening and a longitudinally extending outlet opening;
radial position said vanes are spaced from said casing at
a cylindrical hub extending lengthwise within said casing
the distal ends thereof, and a bent position under the ac
tion of ?uid pressures adjacent the outlet before enter 40 and supported for rotation therein, with a portion of its
periphery positioned in relatively close proximity to an
ing the constricted portion, said vanes being held by ?uid
adjacent portion of the casing lying between said outlet
pressure away from said casing when in said bent posi
tion, whereby said vanes clear said casing during all rota
and inlet openings, and cooperating therewith to form a
restricted chamber port-ion in. the casing at one side of
tional positions thereof.
2. in a ?uid moving device, a rotatably mounted hub
said hub; and nonresilient ?exible vanes carried by said
member; a plurality of nonresilient ?exible vanes carried
hub movable under the action of centrifugal force to a
by said hub; a casing surrounding said hub forming a
substantially radial position after leaving said ‘restricted
generally eccentric chamber with respect to the axis of
chamber portion, and being movable under the action
rotation of said hub, said casing and hub coacting to
of pressures at said outlet opening to a ‘bent position
provide a constricted chamber portion on one side of the
upon entering said restricted chamber portion, said vanes
50
hub having communication at the ?rst end thereof in the
‘being dimensioned to clear said casing when in said sub
direction of hub rotation with a ?uid outlet and at the
stantially radial position, and caused by ?uid back pres
other end thereof with a ?uid inlet, whereby vanes leaving
sure to clear said casing during all other rotational posi
the constricted chamber portion may assume a substan
tions during operation of said device.
tially radial direction under the action of centrifugal force
6. A device for moving a ?uid and imparting kinetic
upon entering the inlet, said vanes being dimensioned 55 energy thereto, comprising: an elongate tubular casing
with respect to said casing such that the distal edges of
having a longitudinally extending inlet opening and a
said vanes clear said casing when said vanes are in said
longitudinally extending outlet opening; a cylindrical hub
radial direction, and a bent position under the action of
extending lengthwise within said casing and supported
?uid pressures adjacent the outlet before entering the
for rotation therein, with a portion of its periphery po
60
constricted portion, said vanes being held by ?uid pressure
sitioned in relatively close proximity to an adjacent por
away from said casing when said vanes are in said bent
tion of the casing lying between said outlet and inlet
position, whereby said vanes clear said casing during all
openings, and cooperating therewith to form a restricted
rotational positions thereof; and adjustable ?aps at said
chamber portion in the casing at one side of said hub;
outlet for forming a variable restriction in and controlling
65 and nonresilient ?exible vanes carried by said hub mov
:the ?uid discharge therefrom.
able under the action of centrifugal force to a substan
3. In a ?uid moving device, a rotatably mounted hub
member; a plurality of nonresilient ?exible vanes of fab
tially radial position after leaving said restricted cham
ber portion, and being bent under the action of differential
ric material carried by said hub; a casing surrounding said » pressures in said ?uid created upon rotation of said vanes,
hub forming a generally eccentric chamber with respect
to the axis of rotation of said hub, said casing and hub 70 which raises the pressure at said outlet opening to a
substantially tangential position upon entering said re
coacting to provide a constricted chamber portion on
stricted chamber portion, said vanes being free from
one side of the hub having communication at the ?rst end
contact with said casing at all times during rotation of
thereof in the direction of hub rotation with a ?uid out
said hub upon operation thereof.
let and at the other end thereof with a ?uid inlet, whereby
7. A device for moving a ?uid and imparting kinetic
vanes leaving the constricted chamber portion may as
5
3,080,824
energy thereto, comprising: an elongate tubular casing
having a longitudinally extending inlet opening and a
longitudinally extending outlet opening in substantially 90
degree relation with respect to the longitudinal axis of
said casing; a cylindrical hub extending lengthwise with
in said casing and supported for rotation therein, with
a portion of its periphery positioned in relatively close
proximity to an adjacent portion of the casing lying be
6
acting 'in the unrestricted chamber portion to impart the
velocity of the hub rotation vto the moved ?uid therein,
said vanes being moved by centrifugal force to a sub
stantially radial position when in said unrestricted cham
ber portion and being dimensioned to clear the wall of
said unrestricted ‘ch-amber portion when in said substan
tially radial position, said vanes being bent rearwardly
by ?uid pressure when in said restricted chamber portion
tween said outlet and inlet openings, and cooperating
so as to clear the Wall of said restricted chamber portion,
therewith to form a restricted chamber portion in the eas 10 whereby said vanes clear said casing during all rotational
ing at one side of said hub; and- ?ex-ible vanes carried
positions of said vanes.
by said hub movable under the action of centrifugal
force to a substantially radial position after leaving said
References Cited in the ?le of this patent
restricted chamber portion, said vanes being dimensioned
UNITED STATES PATENTS
to clear said casing when in said radial position and being 15
Re 23,015
Yingling _____________ ____ July 6, 1948
bent rotationally rearward under the action of dilferentia'l
346,471
Falcon et al. __________ __ Aug. 3, 188-6
pressures in said ?uid to a substantially tangential posi—
1,053,321
tion upon entering said restricted chamber portion, said
1,086,488
vanes being ‘held away ?rom the wall of said casing by
?uid pressure in said restricted chamber portion, whereby 20 1,116,851
1,402,719
said vanes clear said casing during all rotational posi
1,616,992
tions thereof.
1,904,056
8. A device for moving a fluid and imparting kinetic
2,258,961
energy thereto, comprising: ‘an elongate tubular casing
having a longitudinally extending inlet opening and a 25 2,332,411
longitudinally extending outlet opening; a cylindrical hub
extending lengthwise within said casing and supported
for rotation therein with its axis substantially parallel
2,465,887
Schrock _______ __'_____ Feb. 18, 1913
1914
Wachter ____________ __ Feb. 10,
Schneible ___________ __ Nov. 10*,
‘Bartlett et al. __________ __ Jan. 3,
Ruckstuhl ___________ __ Feb. 8,
1914
1922
1927
Kjaer _______________ __ Apr. 18, 1933
Saathot‘t' _____________ __ Oct. 14, 1941
Swanson et al. ________ __ Oct. 19‘, 1943
Larsh ______________ __ Mar. 29, 1949
2,634,805
Bills et al.‘ __________ __ Apr. 14, 1953
2,664,050
2,669,188
Abresch _____________ __ Dec. 29, 1953
McIntyre ____________ __ Feb. 16, 1954
to said openings, with a portion of its periphery posi
2,905,091
Lippisch ____________ __ Sept. 22, 1959
tioned in relatively close proximity to an adjacent por
2,911,920
Thompson __________ __ Nov. 10, 1959
tion of the casing lying between said- outlet and inlet
openings, and cooperating therewith to form a restricted
FOREIGN PATENTS
chamber portion in the casing on one side of said hub
275,132
Germany ____________ __ June 9, 1914
and an unrestricted chamber portion on the opposite
35
531,206
Great Britain __________ __ Dec. 31, 1940
side of said hub; and a plurality of spaced ?exible vanes
of non-resilient material carried by said hub With the
OTHER REFERENCES
connection of each vane to said hub being substantially
German application KL. 59c 2, ‘1,002,630, Feb. 14,
parallel to the axis of ‘said hub, ‘said vanes. being suc
1957.
cessively movable alternately through said chambers, and
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