Sliding-vane pump

Abstract

A sliding-vane pump includes a housing in which a cylindrical fluid chamber is formed, and a conveyor rotor which is rotatable in the fluid chamber and is guided on a circumferential wall of the fluid chamber. In the fluid chamber, the conveyor rotor delimits at least one conveyor chamber having a volume which is variable by rotation of the conveyor rotor, and a drive motor having a rotor which is attached rotationally fixedly on a drive shaft. The conveyor rotor is arranged positionally fixedly on the drive shaft and the drive shaft is radially mounted in the housing by means of the conveyor rotor.

1 . Sliding-vane pump with a housing in which a cylindrical fluid chamber is formed, a conveyor rotor which is rotatable in the fluid chamber and is guided on a circumferential wall of the fluid chamber, wherein in the fluid chamber, the conveyor rotor delimits at least one conveyor chamber having a volume which is variable by rotation of the conveyor rotor, and with a drive motor having a rotor which is attached rotationally fixedly on a drive shaft, wherein the conveyor rotor is arranged positionally fixedly on the drive shaft and the drive shaft is radially mounted in the housing by means of the conveyor rotor. 
     
     
         2 . Sliding-vane pump according to  claim 1 , wherein the drive shaft is radially mounted in the housing at a further bearing point axially spaced from the conveyor rotor. 
     
     
         3 . Sliding-vane pump according to  claim 1 , wherein the conveyor rotor is axially fixed on the drive shaft and, together with the housing, forms an axial bearing for the rotor. 
     
     
         4 . Sliding-vane pump according to  claim 1 , wherein the conveyor rotor has three circumferentially spaced, cylindrical guide faces which guide the conveyor rotor on the circumferential wall of the fluid chamber. 
     
     
         5 . Sliding-vane pump according to  claim 1 , wherein the housing receives two radially displaceably mounted sliding-vanes which lie against the conveyor rotor, wherein the sliding-vanes lie diametrically opposite one another. 
     
     
         6 . Sliding-vane pump according to  claim 4 , wherein the width of the cylindrical guide faces is greater than the width of the sliding-vanes. 
     
     
         7 . Sliding-vane pump according to  claim 1 , wherein the conveyor rotor is formed from a material which has a higher coefficient of thermal expansion than the material from which the housing is formed. 
     
     
         8 . Sliding-vane pump according to  claim 1 , wherein at least one fluid supply channel opens into the fluid chamber from each side in the axial direction. 
     
     
         9 . Sliding-vane pump according to  claim 1 , wherein the drive motor is an electric motor. 
     
     
         10 . Sliding-vane pump according to  claim 2 , wherein the conveyor rotor is axially fixed on the drive shaft and, together with the housing, forms an axial bearing for the rotor. 
     
     
         11 . Sliding-vane pump according to  claim 2 , wherein the conveyor rotor has three circumferentially spaced, cylindrical guide faces which guide the conveyor rotor on the circumferential wall of the fluid chamber. 
     
     
         12 . Sliding-vane pump according to  claim 2 , wherein the housing receives two radially displaceably mounted sliding-vanes which lie against the conveyor rotor, wherein the sliding-vanes lie diametrically opposite one another. 
     
     
         13 . Sliding-vane pump according to  claim 5 , wherein the width of the cylindrical guide faces is greater than the width of the sliding-vanes. 
     
     
         14 . Sliding-vane pump according to  claim 2 , wherein the conveyor rotor is formed from a material which has a higher coefficient of thermal expansion than the material from which the housing is formed. 
     
     
         15 . Sliding-vane pump according to  claim 2 , wherein at least one fluid supply channel opens into the fluid chamber from each side in the axial direction. 
     
     
         16 . Sliding-vane pump according to  claim 2 , wherein the drive motor is an electric motor. 
     
     
         17 . Sliding-vane pump according to  claim 3 , wherein the conveyor rotor has three circumferentially spaced, cylindrical guide faces which guide the conveyor rotor on the circumferential wall of the fluid chamber. 
     
     
         18 . Sliding-vane pump according to  claim 3 , wherein the housing receives two radially displaceably mounted sliding-vanes which lie against the conveyor rotor, wherein the sliding-vanes lie diametrically opposite one another. 
     
     
         19 . Sliding-vane pump according to  claim 3 , wherein the conveyor rotor is formed from a material which has a higher coefficient of thermal expansion than the material from which the housing is formed. 
     
     
         20 . Sliding-vane pump according to  claim 3 , wherein at least one fluid supply channel opens into the fluid chamber from each side in the axial direction.