Impeller wheel for diagonal or radial fans, injection molding tool for manufacturing such an impeller wheel, and device comprising such an impeller wheel

An impeller wheel for diagonal or radial fans, the impeller wheel comprising:

• a bottom disc (7);
• a cover disc (1);
• three-dimensionally shaped blades (6) connected to the bottom disc (7) and the cover disc (1), wherein the bottom disc (7), the cover disc (6), and the three-dimensionally shaped blades (6) form a one-piece part;
• wherein the three-dimensionally shaped blades (6) each comprise a leading edge and a trailing edge, wherein the leading edge and the trailing edge each have a median diameter;
• wherein, in a projection onto a cylinder that is coaxial to a rotation axis (13) of the impeller wheel and has a diameter matching a median diameter of the trailing edge or of the leading edge, a first extension of the trailing edge and/or the leading edge is positioned at a first angle relative to a line that is parallel to the rotation axis (13) and a second extension of the trailing edge and/or the leading edge is positioned at a second angle (β1, β2) relative to a line that is parallel to the rotation axis (13), wherein at least one of the first and second angles (β1, β2) is different from 0°.