Combined pump and motor device

Abstract

A compact, electronically operated, rotary positive displacement pumping device having a stator which functions as an electric motor stator and also as pump stator, a rotor or rotors which function as electric motor rotor or rotors and also as pump rotor or rotors, and a highly efficient and effective magnetic flux path which has low reluctance, said flux path being used in a magnetic drive arrangement to impart rotation to the rotor or rotors to create a pumping action.

What is claimed is:  
     
         1 . An electronically operated pump for creating a pumping action comprising: 
 a stator defining an aperture;    opposing endplates made of a non-magnetic material which are affixed to said stator and enclose said aperture to form a chamber;    a plurality of stator poles located in said stator;    each of said stator poles having a winding which forms a plurality of windings, said windings separated from said stator poles by a non-magnetic material and adapted to selectively energize said stator poles with a reverse or forward polarity;    at least two opposingly mounted rotors in said chamber, each of said rotors including outwardly extending teeth and pockets;    said teeth of said rotors configured to mesh within a corresponding pocket on said opposing rotor; and    an electronic control adapted to selectively energize said windings to create at least one magnetic flux, said flux passes through a forward polarity stator pole, two rotor teeth, a reverse polarity stator pole and said stator whereby said rotor teeth are attracted to said energized stator poles to create rotation of said rotors to create a pumping action.    
     
     
         2 . The device of    claim 1    wherein said magnetic flux passes through a path defined by two energized stator poles positioned less than 180 degrees apart and separated by at least one non-energized stator pole.  
     
     
         3 . The device of    claim 2    wherein said magnetic flux passes through a path defined by a pair of rotor teeth positioned less than 180 degrees apart and separated by at least one rotor tooth.  
     
     
         4 . The device of    claim 1    wherein said magnetic flux path travels in a direction opposite to the rotation of said rotor.  
     
     
         5 . The device of    claim 1    wherein said rotors have at least five teeth and five pockets.  
     
     
         6 . The device of    claim 1    including at least four stator poles per rotor.  
     
     
         7 . The device of    claim 1    wherein said magnetic flux only passes through one of said rotors during the operation of the pump.  
     
     
         8 . The device of    claim 1    wherein said electronic control is adapted to also energize audio transducers to create an audio signal which is equal in amplitude and frequency but opposite in phase to the sound emitted from the pump to provide noise cancellation.  
     
     
         9 . The device of    claim 1    wherein the parts subject to friction and wear are coated with a friction and wear reducing material.  
     
     
         10 . The device of    claim 1    wherein a portion of said stator is made of a magnetic material.  
     
     
         11 . An electronically operated pump for creating a pumping action comprising: 
 a stator having an inner wall defining an aperture;    opposing endplates made of a non-magnetic material which are affixed to said stator and enclose said aperture to form a chamber;    a plurality of stator poles located in said stator;    each of said stator poles having a winding which forms a plurality of windings, said windings separated from said stator poles by a non-magnetic material and adapted to selectively energize said stator poles with a reverse or forward polarity;    a rotor having a plurality of rotor poles and a plurality of vanes;    said rotor located off center in said aperture; and    an electronic control adapted to selectively energize said windings to create at least one magnetic flux, said flux passes through a forward polarity stator pole, two rotor poles, a reverse polarity stator pole and said stator whereby said rotor poles are attracted to said energized stator poles to create rotation of said rotor and said vanes whereby a pumping action is created.    
     
     
         12 . The device of    claim 11    wherein said vanes activate in said rotor and are moved outwardly by said rotation of said rotor.  
     
     
         13 . The device of    claim 11    wherein said vanes are comprised of a magnetic and non-magnetic material, said magnetic flux passes through said magnetic portion of said vanes.  
     
     
         14 . The device of    claim 11    wherein said magnetic flux passes through a path defined by two energized stator poles wherein said poles are positioned less than 180 degrees apart and separated by at least one non-energized stator pole.  
     
     
         15 . The device of    claim 14    wherein said magnetic flux passes through a path defined by two rotor poles wherein said poles are positioned less than 180 degrees apart and separated by at least one rotor pole.  
     
     
         16 . The device of    claim 11    wherein said magnetic flux path travels in a direction opposite to the rotation of said rotor.  
     
     
         17 . The device of    claim 11    wherein said rotor has at least five poles and two vanes.  
     
     
         18 . The device of    claim 11    which includes at least four stator poles.  
     
     
         19 . The device of    claim 11    wherein said electronic control is adapted to also energize audio transducers to create an audio signal which is equal in amplitude and frequency but opposite in phase to the sound emitted from the pump to provide noise cancellation.  
     
     
         20 . The device of    claim 11    wherein the parts subject to friction and wear are coated with a friction and wear reducing material.  
     
     
         21 . The device of    claim 11    wherein said stator is made of a magnetic material.