Side Channel Pump for Conveying Fuel in a Motor Vehicle

Abstract

A side channel pump for conveying fuel having a flow divider disposed in an impeller. The flow divider divides blade chambers of the impeller into individual partial chambers. Flow dividers are also disposed in housing parts opposing the impeller having partial ring-shaped channels radially encompassing each other. The flow dividers in the impeller and in the housing parts are at a distance from each other in order to allow cross flow between the conveyance chambers formed by the partial chambers and the partial ring-shaped channels. The side channel pump thereby has a high efficiency and particularly low radial dimensions.

1 .- 6 . (canceled) 
     
     
         7 . A side channel pump for conveying fuel in a motor vehicle comprising:
 a first and a second casing part;   an impeller having a plurality of blades rotatably arranged between the first and the second casing parts, the impeller having respective end faces that face the first and the second casing parts;   an inlet arranged in one of the first and the second casing parts;   an outlet arranged in the other of the first and the second casing parts;   two conveying chambers having concentrically arranged rings from the inlet to the outlet comprising:
 partially annular channels arranged in the first and the second casing parts corresponding to the two conveying chambers at the respective end faces of the impeller; and 
 a plurality of blade chambers arranged in the end faces of the impeller and delimited by the plural guide blades, 
   wherein the impeller and the casing parts are spaced apart from one another in an area between the concentrically arranged rings of the two conveying chambers.   
     
     
         8 . The side channel pump as claimed in  claim 7 , further comprising a plurality of flow dividers configured to subdivide each of the plural blade chambers into two respective subchambers arranged radially next to one another. 
     
     
         9 . The side channel pump as claimed in  claim 8 , wherein the two respective subchambers arranged radially next to one another are coupled to one another on the end faces of the impeller. 
     
     
         10 . The side channel pump as claimed in  claim 8 , wherein the plural flow dividers are spaced apart from the respective end faces of the impeller. 
     
     
         11 . The side channel pump as claimed in  claim 8 , wherein the two conveying chambers further comprise respective casing flow dividers in the first and the second casing parts arranged between the two conveying chambers opposite the plural flow dividers in the impeller, the casing flow dividers arranged spaced apart from a side of the first and the second casing parts facing the impeller. 
     
     
         12 . The side channel pump as claimed in  claim 8 , wherein the plural flow dividers are manufactured in one piece with the impeller. 
     
     
         13 . The side channel pump as claimed in  claim 8 , wherein the two respective subchambers arranged radially next to one another are coupled to one another on the end faces of the impeller. 
     
     
         14 . The side channel pump as claimed in  claim 8 , wherein the plural flow dividers are spaced apart from the respective end faces of the impeller. 
     
     
         15 . The side channel pump as claimed in  claim 10 , wherein the two conveying chambers further comprise respective casing flow dividers arranged therebetween, the casing flow dividers arranged spaced apart from a side of the first and the second casing parts facing the impeller. 
     
     
         16 . The side channel pump as claimed in  claim 14 , wherein the two conveying chambers further comprise respective casing flow dividers arranged therebetween, the casing flow dividers arranged spaced apart from a side of the first and the second casing parts facing the impeller. 
     
     
         17 . The side channel pump as claimed in  claim 15 , wherein the casing flow dividers are manufactured in one piece with the first and the second casing parts. 
     
     
         18 . The side channel pump as claimed in  claim 16 , wherein the casing flow dividers are manufactured in one piece with the first and the second casing parts. 
     
     
         19 . The side channel pump as claimed in  claim 11 , wherein the plural flow dividers are spaced apart from the respective end faces of the impeller. 
     
     
         20 . The side channel pump as claimed in  claim 19 , wherein the casing flow dividers are manufactured in one piece with the first and the second casing parts.