Centrifugal Pump Comprising a Spiral Housing

Abstract

A centrifugal pump includes a spiral housing with a first housing part and a second housing part. The central region of the second housing part is cup-shaped in order to receive the rotor situated in a wet chamber and forms a bearing at the base of the cup-shaped region rotatably mounting the rotor. A stator surrounds the second housing part and is situated in a dry chamber in the vicinity of the exterior of the rotor.

1 - 3 . (canceled) 
   
   
       4 . A centrifugal pump having a spiral housing, the spiral pump comprising:
 a first housing part; and   a second housing part configured to mate with the first housing part, the second housing part comprising:
 a central continuous cup-shaped area accommodating a rotor; and 
 a cup-shaped base part of the cup-shaped area accommodating a bearing for rotatable mounting of the rotor, and 
   a chamber externally surrounding the second housing part accommodating a stator in an area corresponding to the rotor.   
   
   
       5 . The centrifugal pump as claimed in  claim 4 , further comprising an inlet, the inlet being substantially parallel to a longitudinal axis of the central continuous cup-shaped area,
 wherein an outer area of the second housing part has an outline of curved longitudinal section perpendicular to the direction of flow of a medium flowing in from the inlet.   
   
   
       6 . The centrifugal pump as claimed in  claim 4 , wherein the centrifugal pump is configured as a coolant centrifugal pump in a motor vehicle. 
   
   
       7 . The centrifugal pump as claimed in  claim 5 , wherein the centrifugal pump is configured as a coolant centrifugal pump in a motor vehicle. 
   
   
       8 . The centrifugal pump as claimed in  claim 4 , wherein the chamber externally surrounding the second housing part is configured as a dry chamber. 
   
   
       9 . The centrifugal pump as claimed in  claim 4 , wherein the central continuous cup-shaped area configured to accommodate a rotor is configured as a wet chamber. 
   
   
       10 . The centrifugal pump as claimed in  claim 4 , further comprising at least one seal arranged at an open end of the central continuous cup-shaped area of the second housing part and at least one of the first housing part and a stator housing part configured to surround at least the stator.