Pump

Abstract

The present invention comprises a pump ( 10 ) having a casing ( 14 ) with at least one first hermetically sealed chamber ( 19 ) and at least one second chamber ( 17 ) adjacent to said first chamber, defining a passageway ( 18 ) for fluids and having an inlet ( 15 ) and an outlet ( 16 ) for the fluids. The stator ( 12 ) is provided in this first chamber ( 19 ). In addition, a rotor-turbine assembly ( 11 ) is induced by the stator ( 12 ) to drive a fluid from the inlet ( 15 ) to the outlet ( 16 ), the rotor and the turbine being integral and wholly located in the second chamber ( 17 ).

1 . A pump ( 10 ) comprising: 
 a casing ( 14 ) having at least one first hermetically sealed chamber ( 19 ), and at least one second chamber ( 17 ) adjacent to said first chamber, defining a passageway ( 18 ) for fluids and having an inlet ( 15 ) and an outlet ( 16 ) for the fluids, the first and second chambers being separated from each other by walls;    a stator ( 12 ) located in said first chamber ( 19 );    a rotor-turbine assembly ( 11 ) capable of being induced by the stator ( 12 ) to drive a fluid from the inlet ( 15 ) to the outlet ( 16 ), at least a portion of said assembly being positioned concentrically with respect to the stator, characterized in that the rotor and the turbine are integral and are wholly located in the second chamber ( 17 ), so that, when in operation, at least a film of fluid ( 13 ) will be maintained around said assembly ( 11 ).    
     
     
         2 . A pump ( 10 ) according to  claim 1 , characterized in that said rotor-turbine assembly ( 11 ) is bored through, defining an internal passageway for the turbine in the rotor.  
     
     
         3 . A pump ( 10 ) according to  claim 1  or  2 , characterized in that said walls of the first ( 19 ) and second ( 17 ) chambers are made of injectable polymer.  
     
     
         4 . A pump ( 10 ) according to any one of claims  1 - 3 , characterized in that said rotor-turbine assembly ( 11 ) is of a polymeric material, having a metallic component inside, which is capable of being induced by the stator ( 12 ).  
     
     
         5 . A pump ( 10 ) according to  claim 4 , characterized in that said metallic component is composed of iron and aluminum.  
     
     
         6 . A pump ( 10 ) according to any one of claims  1 - 5 , characterized in that said stator ( 12 ) is located in a position adjacent to the walls that separate said first ( 19 ) chamber from the said second ( 17 ), so that the circulating fluid can cool it by heat transmission.  
     
     
         7 . A pump ( 10 ) according to any one of claims  1 - 6 , characterized in that the turbine of said assembly is composed of blades for centrifuging the fluids.  
     
     
         8 . A pump ( 10 ) according to any one of claims  1 - 7 , characterized in that the space between said assembly ( 11 ) and the stator ( 12 ) is substantially filled up by said walls of the first ( 19 ) and the second ( 17 ) chambers.