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Патент USA US3079101

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Feb. 26, 1963
v. ANSELMl
'
3,079,091
APPARATUS FOR THE PROJECTION 0F LIQUIDS
Filed Jan. 30, 1961
2 Sheets-Sheet 1
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Feb. 26, 1963
v. ANSELMI
3,079,091
APPARATUS FOR THE PROJECTION OF LIQUIDS
Filed Jan. 50, 1961
2 Sheets-Sheet 2
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3,07%‘,091
APPARATUS FGR THE PROJECTXOI‘I
6F LKQUHDS
Virginie Anselmi, ‘Alain, Naples, Italy
Filed Jan. 3%, 1961, Ser. No. 85,553
Claims priority, application Etaly Oct. 5, 1969
4 @iaims. (til. 239-221)
This invention is concerned with an apparatus for ob
raining a uniform projection of liquids in the form of
drops having considerable kinetic energy, for example
within spaces of conical or hemispherical shape.
The apparatus of the present invention is proposed with
the purpose of avoiding projection through one or more
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Patented Feb. 26, 1963
2
which rotates with and encloses shaft 4, extends to the
inner portion of core 3 of wheel 1. Bushing 7 leans
with its lower face upon the face 8 of a centrifugal wheel
§ that is also keyed on shaft 4, within a chamber 10, the
centre portion of which contains a large opening lll,
while the lateral portion communicates with small hollow
uprights 12, diametrically opposed to one another in re
spect of the axis of shaft 4, the uprights having holes
13 that are directed towards the blades 2 of the helically
shaped bladed wheel 1. The orientation of holes 13 is
such that they are directed towards the blades 2 as they
draw near during the rotation of the wheel 1. The holes
13 may be provided with controlling nozzles, not shown,
with the purpose of varying the quantity of liquid to be
nozzles, which have the disadvantage of requiring con 15 projected.
tinuous displacement in order to distribute the projected
Chamber ill- is closed at its lower face, and is composed
liquid, because they only allow such distribution in the
of elements that are adapted to conceal a metal sheet
form of a restricted conical stream, thus evidently creating
14 that constitutes the bottom of a container in the
some zones that receive much liquid and some that receive
centre of which the bladed wheel 1 is disposed.
little or none. Thus an irregular distribution is obtained 20
The lower portion of the container contains the liquid
by means of nozzles. Therefore, nozzles cannot be used
15, which reaches such a level that the lower borders 16
when it is desired to treat spaces or surfaces that have to
be submitted to a quite uniform irrigation by one or more
liquids projected with a considerable kinetic energy.
The apparatus of this invention comprises a ?rst means
of projecting the liquid by a wheel provided with blades
rotating just at the level of the liquid mass, whereby, in
each single rotation, a small portion of liquid is drawn
of the blades of wheel 1 penetrate for a few millimeters
into the liquid 15. Due to this, when the Wheel 1 is
rotated, the blades 2, on each rotation, draw a certain
quantity of liquid and project it tangentially to the path
escribed bythe blades. Thus, the rotation of said blades
causes the liquid to describe a solid of revolution in the
form of. an annulus.
and projected with a considerable kinetic energy outward
Experience has shown that the projection of liquid
ly, thus forming a ring of determined width coaxial with 30 leaves a ring-shaped space that forms the aforesaid cen
the wheel and at an angle depending on the orientation
tral conical void. The result is similar to what would be
of the moving parts and the speed of rotation, the project
ed ring being formed so as to enclose within its central
portion a conical void, and a second means of projection
obtained by totally submerging the bladed wheel in the
liquid and rotatinCr it at great speed.
The action exerted by each blade 2 at the free level of
of the liquid, by means of jets issuing from holes against 35 the liquid is represented in FIG. 2. Supposing one of
the blades of a said second bladed wheel so that the liquid
these blades 2 in rotating movement, and indicating by
forms a cone that ?lls the aforesaid void.
N the line perpendicular to the blade at the point of
The apparatus of the present invention may be used
incidence A in respect of the free level of the liquid, and
separately, with either the ?rst or the second means of
byl that level, there will be created, due to the shock onto
projection on its own, according to the use for which the 40 the blade, a force of reaction R in a direction such that
liquid is required, thus enabling very different applica
angle 4NAR will be equal to the angle ZIAN, whilst
the projection of the liquid due to the shock of the blade
2 on the free surface of the liquid will cover uniformly the
whole angle 4IAR. Of course, as the wheel rotates,
the angle AIAR describes an annular solid of revolution
uniform and powerful projection of the washing liquids
that is limited at the centre portion by a conical void space,
in a spherical region, which is impossible to obtain with
into which annular solid of revolution the liquid is uni~
the rotating jets or nozzles that tend only to reach some
formly projected with a considerable kinetic energy.
zones, thus rendering the washing action inef?cient.
The rotation of the centrifugal wheel 9 provides suction
The ?rst means of projection can be used on its own
to enable the liquid to pass through the central hole 11;
as an irrigation device producing arti?cial rain in the form
the liquid is then compressed within the small uprights
of a ring at a wide bias angle, thus ensuring the uniform
l2 and is discharged through the holes 13 thus precipitat
irrigation of a very large circular band of ground.
ing in a jet of continuous liquid onto the blades 2 where
The second means of projection can be used on its own
the intervening shock breaks the jets, thus uniformly pro
for feeding a liquid fuel burner in boilers or the like 55 jecting the liquid upon an angle of aperture that is readily
plants, thus improving the thermal output of the plant,
determined. So, indicating by L the direction of one of
due to the more distant and uniform dispersion of the
the ?laments of the jet, and by N1 the normal line starting
liquid fuel as compared with known apparatus of this
from one of the points B of incidence, the angle of in
kind, and favouring the extension and ef?ciency of the
cidence will be ALBNI, so that the projection of the
?ame.
60 liquid will take place in the angle LN1BR1, where R1
A practical embodiment of the invention is represented
and L make the same angle with N1. Now, taking into
in the attached illustrative drawings, in which:
consideration all elements of the jet, there will be ob
FIG. 1 is an axial section of the apparatus, and
tained a uniform projection of the liquid within angle
FIG. 2 shows in diagrammatical representation its
gNlBRl. Thus, the rotation of the wheel ?lls a cone,
mode of operating.
and by suitably arranging the blades ‘and thus directing
As shown in the drawings, more precisely in FIG. 1,
the jets, this cone can be arranged to ‘?ll the annulus of
the apparatus comprises a wheel 1 provided with four
revolution of the angle LIAR.
blades 2 of helical shape, symmetrically disposed about
As has already been explained above, the two means
tions.
Thus by using both means of projections in united
combination, the apparatus may be used in automatic dish
washing machines, in which it is necessary to obtain a
a central core 3.
This wheel is keyed on shaft 4 of an
of projection are such as to ensure uniform projection of
electric motor 5, the shaft being extended upwards, and 70 the liquid into the space, although the last has a hemi
provided at its upper end with a threaded portion for re
spherical shape. Such projection may take place (see
ceiving a fastening nut 6 for ?xing wheel 1. A bushing ‘7,
FIG. 2) with a container 17 having a cap 18, the last
3,079,091
3
4
taining in its lower portion the liquid 15 to be projected.
This receptacle may be for example the casing of a dish
liquid in said container means, each of said blades includ
ing such an angle with said level of liquid to produce dur
ing rotation of the blades an annular space of substan
washing machine, and is disposed in the con?guration
of a spherical cap, thus ensuring that the jets of liquids
will uniformly reach, with the necessary kinetic energy,
tially uniformly and tangentially projected liquid limited
by a central substantially conical space void of projected
liquid; and a second means of projecting said liquid and
all the exposed portions of the dishes or any other article
including centrifugal wheel means located in said con
being considered as a cover piece for the receptacle con
tainer below the level of liquid therein and substantially
coaxial with said bladed wheel, a plurality of hollow up
holes 13, allows the use of the apparatus of the present 10 rights radially spaced from said rotating wheel and angu
larly displaced with respect to each other and having re
invention in other applications, for example, to irrigation
spectively inlet openings located in the paths of com
with ‘artificial rain of a large surface of ground or the
pressed liquid produced by said centrifugal wheel means
like around the apparatus.
and restricted outlet openings directed toward said blades
Further, the holes 13 with the rotating wheel can be
used for feeding liquid fuel burners, since the liquid fuel 15 of said rotating wheel for directing onto said blades jets
to be Washed.
The use of the rotating wheel on its own, without the
will be submitted to a more e?icient projection within the
tire-place of the boiler or the like, due to the fact that a
more wide and deep distribution and division of the liquid
‘fuel are ensured.
Thus a more expanded and e?icient
of liquid at such an angle to cause the jets to scatter in
form of a cone of projected liquid which ?lls said conical
void space.
3. Apparatus as claimed in claim 2, in which the rotat
?ame is obtained, which indicates a higher thermal out 20 ing wheel means provided with blades and the centrifugal
wheel for compressing the liquid towards the outlet open
put of the plant. For this application there will be no
ings of said uprights, are both driven by a common motor
liquid at 15 andthe centrifugal bladed wheel 9 will be fed
shaft upon which they are keyed.
from an appropriate container of'liquid.
4. An apparatus for uniform projection of liquids corn~
The apparatus of, the present invention is furthermore
capable of being controlled at will in order to vary the 25 prising, in combination, container means adapted to be
?lled up to a predetermined level with liquid to be pro
quantity of liquid projected and its kinetic energy, by op
jected; a wheel mounted for rotation about an axis sub
erating upon the liquid level, upon the output of the jets
stantially normal to said liquid level and having a plurality
or nozzles, and upon the speed of rotation of the wheel 1.
of substantially radially extending blades each inclined to
What I claim is:
1. An apparatus for uniform projection of liquids com 30 said axis and each having a bottom edge and a top edge;
jet producing means for producing a plurality of jets
prising, in combination, container means adapted to be
arranged to impinge on said blades at such an angle so
‘?lled up to a predetermined level with liquid to be pro
as to produce upon rotation of said wheel a cone of pro
jected; a ?rst means of projecting said liquid and being in
the form of a rotating wheel provided with a plurality of
jected liquid coaxial with said wheel axis, said jet pro
substantially radially extending blades, the lower edges 35 ducing means including centrifugal wheel means located
of which being arranged to dip slightly below the level
in said container below the level of liquid therein and
substantially coaxial with said axis, a plurality of hollow
uprights radially spaced from said bladed wheel and angu
larly displaced with respect to each other and having re
stantially uniformly and tangentially projected liquid lim 40 spectively inlet openings located in the paths of com
ited by a central substantially conical space void of pro
pressed liquid produced by said centrifugal wheel means
jected liquid; and a second means of projecting said liquid
and restricted outlet openings directed toward said blades
and including pump means for pumping liquid from said
of said ?heel for directing onto said blades jets of liquid;
container means and jet producing means operatively con
and means operatively connected to said centrifugal wheel
nected to said pumping means for directing jets of liquid 45 means 'and said bladed wheel for rotating the same about
of liquid in said container means, each of said blades in
cluding such an angle with said level of liquid to produce
during rotation of the blades an annular space of sub
onto said blades of the rotating wheel at such an angle to
cause the jets to scatter in the form of a cone of pro
jected ‘liquid which ?lls said‘ conical‘ void space.
2. An apparatus for uniform projection of liquids com
prising, in combination, container means adapted to be 50
filled up to a predetermined level with liquid to be pro
jected; a ?rst means of projecting said liquid and being
inrthe form of a rotating wheel provided with a plurality
of- substantial-1y radially extending blades, the lower edges
of which being arranged to dip slightly below the level of
said axis and in such a direction in which the bottom
edges of said blades form the leading edges.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,870,317
2,155,220
2,573,067
Stoddard et al. ________ __ Aug. 9, 1932
Ehret _______________ __ Apr. 18, 1939
Sandberg _____________ __ Oct. 30, 1951
2,881,777
Pauly _______________ __ Apr. 14, 1959
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