Fluid pump

Abstract

The invention relates to an electric fluid pump with a semi-axial construction, wherein the pump housing ( 32, 33, 34 ) has at least two identical pump housing parts ( 33, 34 ). This feature of the invention reduces the number of different components required to manufacture the electric fluid pump and thus reduces costs while achieving a high operating efficiency.

1 . A fluid pump for internal combustion engines, comprising:
 an electric motor with a rotor arranged in a motor housing and a stator, wherein the rotor is arranged on a drive shaft at least in a manner secured against rotation;   an impeller fastened on the drive shaft;   at least one set of guide vanes arranged behind the impeller in a flow direction of fluid to be conveyed; and   a pump housing enclosing the motor housing, the impeller and the guide vanes, and a pressure port and an intake port are arranged opposite axial ends of the pump housing, wherein   
     the fluid pump is configured as a semi-axial pump, and wherein 
     the pump housing comprises at least two identical pump housing parts, 
     one of which is a suction-side pump housing part and the other one is a pressure-side pump housing part, and 
     the identical pump housing parts each comprise a first cylindrical section serving as an intake or pressure port, respectively, and that is adjoined by a flaring section terminating in a second cylindrical section of larger diameter, and 
     the impeller of the fluid pump is arranged in the suction-side pump housing part in a transition portion between the first cylindrical section and the flaring section. 
   
   
       2 . The fluid pump for internal combustion engines of  claim 1 , wherein the guide vanes are arranged in a cylindrical pump housing part situated axially between the two identical pump housing parts.