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.

Description:
[0001]     This invention is 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 within a stator contention case, arranging the chambers that compress and expand during its performance. 
     
    
     SEVERAL VIEWS OF THE DRAWINGS-BRIEF DESCRIPTION  
       [0002]      FIG. 1 : Lay out view of the pump in its two models or construction varying.  
         [0003]      FIG. 1Y : Model or varying Y  
         [0004]      FIG. 2X : Model or varying X  
         [0005]      FIG. 2 : Cross-section in front and back of the pump in its two varying or constructions models.  
         [0006]      FIG. 2Y : Varying Y  
         [0007]      FIG. 2X : Varying X  
         [0008]      FIG. 3 : View of the working development of the pump in its two varying or construction models:  
         [0009]      FIG. 3Y  (AY, BY, CY): Varying Y  
         [0010]      FIG. 3X  (AX, BX, CX): Varying X  
         [0011]      FIG. 4 : Cross-Section in front A and side B of the transference device from the cneter or rotation point of the secondary conductor rotor part. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0012]     This invention represent a PISTON ROTARY PUMP OF VARIABLE FLOW, is submitted in two models or construction varying: Y and X,  FIG. 1 ( FIG. 1Y ,  FIG. 1X ),  FIG. 2  ( FIG. 2Y ,  FIG. 2X ),  FIG. 3 ( FIG. 3Y ,  FIG. 3X ). Said pump is composed by a case  5 Y ( FIG. 1Y ) or  5 X ( FIG. 1X ) of cylindrical hole  8 Y ( FIG. 1Y ) or  8 X ( FIG. 1X ), with an internal circular stator wall HY ( FIG. 1Y ) or HX ( FIG. 1X ), where a piston runs inside,  11 Y ( FIGS. 1Y, 2Y ,  3 Y) or  11 X ( FIGS. 1X, 2X ,  3 X) showing a rotation movement and at the same time a king pin or pendulum movement, due that is driven by two conducting rotary parts, one is the principal conducting rotary part  12 Y ( FIGS. 1Y, 2Y ,  3 Y) or  12 X ( FIGS. 1X ,  2 X) which has a rotary center that coincides with the center of the internal hole of the case and takes the piston in a coupling or junction point movable or articulated, UY ( FIGS. 1Y, 2Y ,  3 Y), or UX ( FIGS. 1X, 2X ,  3 X), and a secondary conducting rotary part  10 Y ( FIGS. 1Y, 2Y ,  3 Y) or  10 X ( FIGS. 1X, 2X ) that has a rotation center  9 Y (FIGS.  1 Y,  2 Y,) or  9 X ( 1 X,  2 X) exocentric with the case hole center, taking the piston in a coupling or junction point movable or articulated SY ( FIGS. 1Y, 2Y ,  3 Y) or SX ( FIGS. 1X, 2X ,  3 X).  
         [0013]     The pump, in its two models or construction varying, keeps always the same functioning concept, which is the characteristics of the invention that covers a piston with rotary movement together with a king pin or pendulum within the stator contention case driven by the two rotary parts, one part rotates with the rotation center of the circumference of the case hole and the other rotates keeping an exocentric rotation center with the center of the circumference of the case hole. Being, said center, variable in its location, which allows modifying the volume of flow of the fluid that impels the pump.  
         [0014]     Therefore, the constructive difference between the two models or varying the pump do not affect the performance, basic characteristics or fundamentals of the invention, which are only secondary and minor modifications in the structure of some of the pump components.  
         [0015]     In the model or varying Y of the pump, the principal rotor conducting part  12 Y has a bell shape which in its cross-section or outside shape coincides exactly with the cylindrical hole of the case  8 Y, and in the cross-section or perimeter inside the section of its internal hole, is located the piston  11 Y, which has the shape of an irregular circumference that follows the running of the king pin or pendulum of said piston.  
         [0016]     The par  12 Y has ports  14 Y that allow the flow of the fluid, because this part acts as a rotary valve, which is clearly appreciated in  FIG. 3 .  
         [0017]     In the case of the varying or model X, the principal rotary conducting part  10 X has the shape of a lever that fits in a hole or depression, adequately, that has one side of the piston  11 X dividing said hole in two independent chambers between them, RX and PX ( FIG. 3X ) that compress and expands during the running of the piston and interact with the principal chambers LX and MX ( FIG. 3X ), arranged between the piston and the stator case hole, allowing the flow of fluid of the principal chambers to the port of exit  15 X ( FIG. 1X ) or entry port  15 BX ( FIG. 1X ) to the corresponding principal chamber, whichever the case, through the ports  14 X ( FIG. 1X ) located at both sides of the piston  11 X. In this case the rotor part  11 X, has the function of a rotary valve, opening and closing the entrance and exit ports  15 BX and  15 X of the pump. The piston  11 X requires sealing parts  16 X and  16 BX ( FIGS. 1X, 2X ,  3 X) that are set up in grooves in both ends of the piston  11 X and using springs  17 X and  17 BX ( FIG. 1X ), allow the proper adjustment of the piston with the inside walls of the stator HX of the case, covering the separation produced between both, during pendulum displacement or king pin of the piston, reaching this way to divide the hole of the case in two independent chambers between them LX and MX ( FIG. 3X ).  
         [0018]     The pump has a device to move the rotation center of the secondary conductor rotor part  10 Y or  10 X ( FIG. 4 ) composed of a body  3  that bears the rotor shaft of the secondary conductor rotor part E, which runs in a contention groove K moved by a threaded shaft  1  which is inserted in a port  5  with female thread located in body  3 , being the threaded shaft  1  fasten by a contention part  7  with a steering wheel  2  at one end to transmit movement through an outside gear.  
       DESCRIPTION OF THE PERFOMANCE OF THE PUMP  
       [0019]     The pump works as follows: the piston inside the stator case is driven by the principal conductor rotor part that rotates within the case, coinciding its rotation center with the center of the circumference of the case hole, therefore, the piston makes a revolving movement within the case, but as is connected to a secondary conductor rotor part, that has an exocentric rotation center with respect to the center of the circumference related to the cylindrical hole of the case, the piston moves as well in a king pin or pendulum at the same time, being the center or partial rotation of the pendulum movement of the piston, the coupling of the piston with the principal conductor part UY or UX. Said king pin movement, added to the rotation movement, is due to the fact that the piston works as a bond between the principal rotor part and secondary rotor part, because when the principal conductor rotor part pulls through the piston the secondary rotor part, however, as the secondary rotor part has a different rotation center than the principal rotor part and is exocentric with respect to the case hole, moves in its end where the piston is fasten, a variation in the approach to the stator wall HY or HX of the inside hole of the case, displacing from a minimum to a maximum distance and vice versa in the rotation of the parts, unlike of the principal conductor rotor part that has a centralized rotation center with the circumference of the case hole, its end fasten to the piston keeps always the same distance of approach with the stator inside wall of the case, there is a variation in the angle between the imaginary axis that divides symmetrically the piston all along, and the imaginary axis that joints the coupling point of the principal rotor part with the piston and the rotary axis of the same, as if the secondary rotor part virtually pull and push the piston, which results in the king pin or pendulum movement of the piston.  
         [0020]     As the piston divides the hole of the case in two chambers, GX and FX, or LX and MX ( FIG. 3 ), when tilt to the right due to the king pin movement, close or compress the chamber located to the rigth GY ( FIG. 3Y  (AY)) or LX ( FIG. 3X  (AX)) and expands the one to its left FY ( FIG. 3Y  (AY)) or MX ( FIG. 3X  (AX)), and when changing to the contrary, that is to say tilt to the left, compress the chamber to the left FY (Fig. CY) or MX (Fig. CX) and expands to the right GY (Fig. CY) or LX (Fig. CX) Therefore, in a rotation of the principal conductor rotor part driving the piston, it expands and compress the two chambers LX, and MX or GY and FX, each at its respective time.  
         [0021]     The pump has at the entrance and exit of the fluid of the respective ports of entry and exits  15 BY and  15 Y ( FIG. 1Y ) or  15 BX and  15 X ( FIG. 1X ), wich can be opened and closed alternatively by the principal conductor rotor part which has also the function rotary valve, when rotating.  
         [0022]     Other component parts of the pump indicated in the drawings are: the cover  4 Y or  4 X ( FIG. 1 ) and the entrance and exit ducts of the fluid  7 BY and  7 X, or  7 BX and  7 X ( FIG. 1 ).  
         [0023]     In all drawings is used the same code for the same part or component.