Cellular wheel and method for the production thereof

Abstract

A cellular wheel made of metal comprises an outer sleeve located symmetrically to a rotational axis and an inner sleeve. The annular space between the outer sleeve and inner sleeve is divided by cell wall parts, which are oriented in parallel to the rotational axis and delimited by cell edges, into a plurality of rotation-symmetrically arranged cells, wherein the cell edges are located on intersecting lines of cylinder lateral surfaces with rotation-symmetrically arranged axial planes, said surfaces being arranged concentrically to the rotational axis. The outer sleeve and inner sleeve delimit a cell structure, in which cell edges, which delimit a cell wall part in each case, are concurrently located in pairs on adjoining cylinder lateral surfaces and on adjoining axial planes. With each cell edge located on two adjoining axial planes of adjoining cylinder lateral surfaces, each cell edge on a cylinder lateral surface delimits two cell walls.

1 . A cellular wheel made of metal, comprising:
 a cylindrical outer sleeve located symmetrically with respect to a rotational axis (y), and   a cylindrical inner sleeve located concentrically with respect to the outer sleeve,   wherein an annular space between the outer sleeve and the inner sleeve is divided into a multiplicity of rotation-symmetrically arranged cells by cell wall parts delimited by cell edges oriented parallel to the rotational axis (y), which cell edges lie with rotation-symmetrically arranged axial planes on lines of intersection of cylinder shell surfaces arranged concentrically to the rotational axis (y),   wherein the outer sleeve and the inner sleeve delimit a cell structure constructed from a network formed in cross section in mesh-like arrangement from connected cell wall parts, in which cell structure cell edges, which in pairs respectively delimit a cell wall part, lie simultaneously on adjacent cylinder shell surfaces and on adjacent axial planes, and   wherein each cell edge on a cylinder shell surface, with each of the cell edges lying on two adjacent axial planes of an adjacent cylinder shell surface, respectively delimits two cell wall parts.   
     
     
         2 . The cellular wheel as claimed in  claim 1 , wherein the cell structure comprises three cylinder shell surfaces. 
     
     
         3 . The cellular wheel as claimed in  claim 1 , wherein the cell structure comprises four cylinder shell surfaces. 
     
     
         4 . The cellular wheel as claimed in  claim 1 , wherein the cell structure comprises more than four cylinder shell surfaces. 
     
     
         5 . The cellular wheel as claimed in  claim 1 , wherein the wall thickness of the materials used to produce the cellular wheel measures 0.4 mm or less. 
     
     
         6 . A method for producing from metal a cellular wheel, comprising:
 a cylindrical outer sleeve located symmetrically with respect to a rotational axis (y), and   a cylindrical inner sleeve located concentrically with respect to the outer sleeve,   wherein an annular space between the outer sleeve and the inner sleeve is divided into a multiplicity of rotation-symmetrically arranged cells by cell wall parts delimited by cell edges oriented parallel to the rotational axis (y), which cell edges lie with rotation-symmetrically arranged axial planes on lines of intersection of cylinder shell surfaces arranged concentrically to the rotational axis (y),   wherein the method comprises the following steps to be executed in sequence;   (a) provision of a predefined number of blades having a length (l) corresponding to the length (L) of the cellular wheel and a width (b) appropriately tailored to the predefined thickness (B) of the annular space between the outer sleeve and the inner sleeve;   (b) paired welding together of the blades in the longitudinal direction at predefined points to form a blade assembly, with the formation of the cell edges;   (c) stretching of the blade assembly in a direction (z) perpendicular to the plane of the blades and of the stretched blade assembly to form the annular cell structure;   (d) connection of the two terminal blades of the stretched and bent blade assembly along corresponding cell edges;   (e) sliding of the inner sleeve into the annular cell structure and sliding of the outer sleeve onto the annular cell structure;   (f) connection of the outer sleeve and inner sleeve to the blade edges.   
     
     
         7 . The method as claimed in  claim 6 , wherein the connection of the two terminal blades of the stretched and bent blade assembly along corresponding cell edges and the connection of the outer sleeve and inner sleeve to the blade edges, is carried out by welding together the parts by means of a laser beam or electron beam. 
     
     
         8 . A method for producing from metal a cellular wheel, comprising:
 a cylindrical outer sleeve located symmetrically with respect to a rotational axis (y), and   a cylindrical inner sleeve located concentrically with respect to the outer sleeve,   wherein an annular space between the outer sleeve and the inner sleeve is divided into a multiplicity of rotation-symmetrically arranged cells by cell wall parts delimited by cell edges oriented parallel to the rotational axis (y), which cell edges lie with rotation-symmetrically arranged axial planes on lines of intersection of cylinder shell surfaces arranged concentrically to the rotational axis (y),   wherein the method comprises the following the steps to be executed in sequence (a) provision of a predefined number of blades having a length (l) corresponding to the length (L) of the cellular wheel and a width (b) appropriately tailored to the predefined thickness (B) of the annular space between the outer sleeve and the inner sleeve;   (b) shaping of the blades in accordance with their definitive shape predefined by the annular cell structure and, if necessary, connection of blade pairs to form individual cells;   (c) placement of the shaped blades or the cells at predefined points in a predefined number on the outer side of the inner sleeve, and connection of the blades or the cells one to another to form the annular cell structure and to the inner sleeve;   (d) sliding of the outer sleeve onto the annular cell structure;   (e) connection of the outer sleeve and inner sleeve to the blade edges.   
     
     
         9 . A method as claimed in  claim 8 , characterized in that wherein the connection of the blade pairs to form individual cells, and the connection of the blades or the cells one to another to form the annular cell structure, and to the inner sleeve, is carried out by welding together the parts by means of a laser beam or electron beam. 
     
     
         10 . The use of a cellular wheel as claimed in  claim 1  in a pressure wave supercharger for supercharging internal combustion engines. 
     
     
         11 . The use of a cellular wheel as claimed in  claim 2  in a pressure wave supercharger for supercharging internal combustion engines. 
     
     
         12 . The use of a cellular wheel as claimed in  claim 3  in a pressure wave supercharger for supercharging internal combustion engines. 
     
     
         13 . The use of a cellular wheel as claimed in  claim 4  in a pressure wave supercharger for supercharging internal combustion engines. 
     
     
         14 . The use of a cellular wheel as claimed in  claim 5  in a pressure wave supercharger for supercharging internal combustion engines.