Piston rotary pump of variable flow

Abstract

This invention called PISTON ROTARY PUMP OF VARIABLE FLOW. Is a mechanical device destined to impel and/or to compress fluids through the action of a piston guided by driven rotary parts, delineating a rotary movement and at the same time a king pin or pendulum movement within a stator contention case, arranging the chambers that compress and expand during its performance. The pump flow vary thru a simple movement of the device that support the rotation axle of one of the rotary parts.

1 . The rotary piston pump of variable flow protected hereunder consists of a case with an inner cylindrical hole inside which rotation takes place around a rotation center coinciding with the center of the circumference that said cylindrical hole forms within the case. It has a main rotor driving or pulling a piston taken by the end at a coupling or junction point, movable or articulated, which provides the piston with a rotation or pivoting axis in relation to the rotor driving it. At the same time, this piston is connected to or engaged by a secondary rotor at a coupling or junction point, movable or articulated, located at a different place from the one of the coupling point between the piston and the main rotor. This secondary rotor has an eccentric rotation center in relation to the center of the circumference of the cylindrical hole of the case.  
   
   
       2 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by its structure that has the necessary means (holes and/or conduits and/or valves) required for fluid inlet to and outlet from the pertinent pump chambers.  
   
   
       3 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by a main rotor driving a piston, the rotor being shaped or composed so as to operate as a rotary valve, alternately opening and closing fluid inlet to and outlet from pump chambers.  
   
   
       4 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by a secondary rotor that has a movable rotation center allowing pump flow variation.  
   
   
       5 . The rotary piston pump of variable flow, as described under  claim 4 , is characterized by a secondary rotor that revolves mounted on a movable device intended to vary the location of the rotation center of said rotor.  
   
   
       6 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by pump components provided with different sealing means to improve its watertightness.  
   
   
       7 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by components shaped or composed with the necessary characteristics to improve their operation, thus reducing wear, compensating forces, lowering vibration levels, and increasing performance.  
   
   
       8 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by a pump that is able to contain more than one piston and more than one main and/or secondary rotor.  
   
   
       9 . The rotary piston pump of variable flow, as described under  claim 1 , is characterized by having the necessary means to reduce friction and wear in its movable parts (e.g. ball bearings, lubrication channels, etc.).