Abstract: A metal cellular wheel (10) for a pressure wave supercharger comprising an outer sleeve (12) arranged coaxial to a rotational axis (y), an inner sleeve (14) arranged coaxial to the outer sleeve (12), and at least one intermediate sleeve (18) arranged between and coaxial to the outer sleeve (12) and the inner sleeve (14). Fins (16) are arranged between successive sleeves (12, 18; 18, 14), aligned radially to axis (y), and joined to adjacent sleeves (12, 18; 18, 14). On outer sleeve (12), outer sealing sleeves (24) engage over the outer sleeve (12), are joined with the outer sleeve (12), and have a sealing profile (30) for a labyrinth seal. A drive shaft (13) along axis (y) is joined with the inner sleeve (14), and the intermediate sleeve(s) (18) has (have) notches (26) extending, between adjacent fins (16), from both end faces (11) of the cellular wheel (10).

Abstract: A method for producing a cellular wheel, wherein a tool having a cylindrical inner shell, the diameter of which corresponds to the inner diameter of the subsequent sleeve, is placed on the free end edges of the fins for fixing the angular orientation of the fins. A molding material mixture is applied in the cells bounded by the inner shell of the tool and the fins and cured. After removing the tool, the subsequent sleeve is placed on the free end edges of the fins fixed in place by the cured molding material mixture. The free end edges of the fins are joined to the subsequent sleeve to the cells. The cured molding material mixture is thermally treated and is removed from the cells.

Abstract: In a method for producing a cellular wheel made of metal, the following steps are conducted consecutively: (a) providing a sheet metal strip (26) having a length (1) that corresponds at least to the length of a circumferential line of an intermediate sleeve and a width (b) that corresponds at least to the length of the cellular wheel; (b) placing disks (16) in predetermined locations in predetermined quantities on both sides of the sheet metal strip (26) perpendicular to the sheet metal surface and perpendicular to the longitudinal direction of the sheet metal strip (26) and connecting the disks (16) to the sheet metal strip (26) by welding or brazing; (c) bending the metal strip (26) equipped on both sides with the disks (16) and connecting the two ends of the sheet metal strip (26) by welding or brazing to form the intermediate sleeve; (d) placing a first tubular sleeve that is concentric to the intermediate sleeve as an outer sleeve, and a second tubular sleeve that is concentric to the intermediate sleeve

Abstract: The invention relates to a method for producing a cellular wheel made of metal, wherein a tool (40, 50, 60) having a cylindrical inner shell (41, 51, 61), the diameter of which corresponds to the inner diameter of the subsequent sleeve (18, 20, 14), is placed on the free end edges of the fins (16) for fixing the angular orientation of the fins (16). A molding material mixture (F) made of a fireproof base molding material and a curable binding agent that can be released from the base molding material by thermal treatment is applied in the cells (22, 24, 26) bounded by the inner shell (41, 51, 61) of the tool (40, 50, 60) and the fins (22, 24, 26) and cured. After removing the tool (40, 50, 60), the subsequent sleeve (18, 20, 14) is placed on the free end edges of the fins (16) fixed in place by the cured molding material mixture (F). The free end edges of the fins (16) are joined to the subsequent sleeve (18, 20, 14) by welding or brazing to the cells (22, 24, 26).

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.

Abstract: In a method for producing a cellular wheel made of metal, the following steps are conducted consecutively: (a) providing a sheet metal strip (26) having a length (1) that corresponds at least to the length of a circumferential line of an intermediate sleeve and a width (b) that corresponds at least to the length of the cellular wheel; (b) placing disks (16) in predetermined locations in predetermined quantities on both sides of the sheet metal strip (26) perpendicular to the sheet metal surface and perpendicular to the longitudinal direction of the sheet metal strip (26) and connecting the disks (16) to the sheet metal strip (26) by welding or brazing; (c) bending the metal strip (26) equipped on both sides with the disks (16) and connecting the two ends of the sheet metal strip (26) by welding or brazing to form the intermediate sleeve; (d) placing a first tubular sleeve that is concentric to the intermediate sleeve as an outer sleeve, and a second tubular sleeve that is concentric to the intermediate sleeve