POMPE ROTATIVE A CORPS SPHERIQUE

SPHERICAL ROTARY PUMP

Abrégé anglais

ABSTRACT
SPHERICAL ROTARY PUMP
In rotary pumps with positive displacement it is common to use
moving vanes within the pump to create a seal to move the
working fluid. These vanes rub against the internal surfaces
causing friction and the need for lubrication, which in turn
limits the working temperature or requires cooling. This
invention uses two rotors within a spherical housing to move
a working fluid with near positive displacement. The rotors
can rub against each other and the pump housing or can be
supported by their bearings and turn on their shafts without
actual contact and hence no friction or required lubrication.
Leakage around the sealing edges is offset by a very high
shaft speed due to a rotary and frictionless pump. Using a
pump as compressor and another as a motor an engine similar to
a turbine engine can be built but of a smaller size due to the
near-positive displacement of the pump.

Revendications

THE EMBODIMENTS OF THE INVENTION IN WHICH EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A rotary pump comprising two rotors that mesh when
mounted at an angle to each other, that are supported on
their shafts by bearings, and are incased in a spherical
pump housing that has intake and exhaust ports.
2. A rotary pump as defined in claim 1, in which the rotors
have blades cast in the face that rise up with a concave
sealing surface on one side that terminates with a
sealing edge on the same side.
3. A rotary pump as defined in claim 1, that has positive
displacement when all of the sealing surfaces slide
against each other, or has near-positive displacement
when all of the sealing surfaces are separated by a small
gap when the rotors are synchronized by gears and
supported by the bearings within the spherical housing.
4. A rotary pump as defined in claim 3, that can operate in
reverse as a motor, and form a fuel and air engine using
gears and one or more pumps to force air into a
combustion chamber and one or more pumps as motors to
exhaust the combustion gases .

Description

SPHERICAL ROTARY PUMP 2 0 6 9 6 0 7
This invention relates to a rotary pump that has positive
displacement and can act in reverse as a motor.
In rotary pumps commonly used to move liquids and gases, these
pumps often rely on vanes inside a housing to form a constant
seal as the pump turns. These vanes slide against the
internal surfaces causing friction and limit the speed at
which the pump can turn. When these vane pumps move gases at
high temperatures, lubrication and cooling of the moving parts
are a problem. Engines using a vane pump as an air compressor
to feed a combustion chamber and another pump as a motor, to
create power and exhaust the gases, have many technical
problems to overcome.
I have created a rotary pump with two rotors that turn within
a spherical housing. The rotors are identical and mesh with
each other when mounted at an angle. As the pump turns the
space between the rotors on one side of the housing expands
and draws in the working fluid through a port. A port on the
other side of the pump housing expels the working fluid as the
space between the rotors is compressed. The rotors can be
completely supported by their bearings and synchronized by
gears on the end of their shafts, and need not rub against
each other or the housing thereby eliminating friction and
allowing very high shaft speeds. Hence, the rotors and pump
housing require no lubrication or cooling and can operate at
temperatures as high as the materials can withstand.
In the drawings which illustrate the embodiments of the
invention,
Figure 1 is a side view in section of the pump/motor,

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Figure 2 is a side view of a rotor which embodies a ball
centre,
Figure 3 is a front or face view of the rotor in Figure
2,
Figure 4 is a schematic side view of the pump/motor when
configured as an engine.
In Figure 1 the rotors 1 and 2 are shaped identically such
that they mesh when held together at a fixed angle by their
bearings 3 and 4 inside a spherical housing 5. Each rotor has
a number of blades 6 that rise up from its face with a concave
surface 7 on one side that terminates with an edge 8. As the
pump turns the edge 9 of the other rotor sweeps along the
surface 7 until the stroke ends and the edge 8 at the top of
the surface 7 begins to sweep along the concave surface of the
edge 9. When the shafts 10 and 11 turn together a working
fluid is drawn in one side, through a port in the housing, and
pumped out the other. When a working fluid is forced in one
side and allowed to be expelled out the other torque is
produced on the shafts 9 and 10 and the pump acts as a motor.
Figure 2 shows the embodiment of a central sphere or ball 12
cast in rotor 1 that fits in a matching socket of the other
rotor 2. The ball serves to minimize the length of the
sealing edges within the pump and may be varied in size to
change other properties of the pump. If necessary groves (not
shown) may be cut in the ball to allow both rotors to be
fitted together. The face of the rotor 1 with the ball 12 is
shown in Figure 3.
Figure 4 is a simplified schematic representation of an engine
made with gears connecting the pump/motors. When two (or
more) of these pumps work off a common drive shaft 16 with one
pump 18 turning faster or being larger than the other 17 an

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engine is formed, Figure 4. As the shaft 16 turns a volume of
air is drawn in the intake port 19 and is pumped out a port on
the other side into a combustion charnber 14. Fuel from an
injector 15 is burned with the air and produces a larger
volume of combustion gases which are forced through the faster
or larger pump 18 and exhaust port 13. This produces the
engines power.

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