Device for Moving a Fluid

Abstract

A device for moving a fluid, including a moving part to move the fluid, and a synchronous motor, where the synchronous motor includes a stator with at least one stator coil and a rotor with at least one rotor magnet, and where the moving part can be driven directly by the synchronous motor and acts as its rotor.

1 . A device for the movement of a fluid, comprising a moving part to move the fluid, and a synchronous motor, wherein the synchronous motor comprises a stator with at least one stator coil and a rotor with at least one rotor magnet, wherein the moving part can be driven directly by the synchronous motor and acts as its rotor, wherein the synchronous motor can be operated by rotary current. 
     
     
         2 . The device according to  claim 1 , wherein one of at least one rotor magnet is arranged one of in, on, and a combination thereof the moving part, and/or the moving part comprises permanently magnetic material, the moving part is one of completely or partially covered with permanently magnetic material, and a combination thereof. 
     
     
         3 . The device according to  claim 1 , comprising a housing which at least partially encloses the moving part,
 wherein at least one stator coil is one of arranged in, on the housing, or outside of the housing and is spaced from it.   
     
     
         4 . The device according to  claim 1 , wherein the at least one stator coil comprises a number of separate windings, which correspond to the number of phases of the rotary current. 
     
     
         5 . The device according to  claim 1 , wherein the synchronous motor is one of a rotary motor and a linear motor. 
     
     
         6 . The device according to  claim 1 , wherein the synchronous motor can be operated in two directions. 
     
     
         7 . The device according to  claim 1 , and further comprising a plurality of stator coils, wherein a rotor magnet describes defines a rotational path during the operation of the device, and a plurality of stator coils are arranged in the same plane as the rotational path. 
     
     
         8 . The device according to  claim 1 , wherein the moving part takes the form of one of a rotor disc, an impeller, an impeller wheel, a pot, a piston, a rotary piston, a screw, a helical shaft, and an agitator blade. 
     
     
         9 . The device according to  claim 1 , wherein the device is one of a centrifugal pump, a screw, an eccentric a rotary piston pump, a single-acting reciprocal pump, a double-acting reciprocating pump, and a stirrer. 
     
     
         10 . The device according to  claim 1 , wherein at least one rotor magnet is spaced with respect to an imaginary radial line from the axis of rotation to a point of the moving part, which is remotely the furthest from the axis of rotation, at least half as far from the axis of rotation as the point. 
     
     
         11 . The device according to  claim 1 , wherein at least two rotor magnets are arranged with opposite poles one of adjacently in, on, and a combination thereof the moving part. 
     
     
         12 . The device according to  claim 11 , wherein more than two rotor magnets are arranged one of in, on, and a combination thereof the moving part in a sequence such that adjacent rotor magnets are respectively of opposite polarity. 
     
     
         13 . The device according to  claim 1 , and further comprising a frequency converter for controlling the synchronous motor. 
     
     
         14 . The device according to  claim 7 , and wherein the plurality of stator coils are arranged on a path concentric to the rotational path. 
     
     
         15 . The device according to  claim 1 , wherein the moving part at least partially encloses the stator of the synchronous motor.