Abstract: The invention refers to a fan system (10) comprising a fan shroud (14) and a ring fan (12) having a hub (30), a plurality of fan blades (32), and a ring structure (34). The ring structure (34) has a ring member (46) and a flange member (48), the ring member (46) having a hollow cylindrical shape, the flange member (48) extending radially outwardly from the ring member (46). The fan shroud (14) has an annular shroud flange (54), a shroud body (56) and a plurality of shroud guide vanes (58), the shroud flange (54) extending radially outwardly from the shroud body (56) and being disposed along the rotary axis (A) between the flange member (48) and the shroud body (56), the shroud body (56) being disposed about the ring member (46) and having a first body portion (70), a second body portion (72) and a divergent nozzle (74).

Abstract: A fan assembly that includes a fan, which has a fan member with a hub and a plurality of fan blades, and an electric motor with a rotor and a stator. The hub is rotatable about an axis and has a front wall and a circumferentially extending wall that cooperate to form a rotor cavity. The rotor has a plurality of first coupling features and a plurality of first snap-fit features formed thereon. The hub has a plurality of second coupling features and a plurality of second snap-fit features formed thereon. The first and second coupling features engage one another to couple the rotor to the hub in a manner that inhibits relative rotation but which permits relative axial movement along the axis. The first and second snap-fit features engage one another to inhibit the rotor from being withdrawn from the rotor cavity.

Abstract: The invention relates to an axial flow fan (1) comprising a fan wheel (2) which has a plurality of primary fan blades (3) which are arranged between an inner fan wheel hub (4) and an outer collar (5); and comprising a fan drive (6), which is arranged in the inner hub (4) and which cooperates with a drive electronics arrangement (7) arranged in a stationary outer hub (4), characterized in that a radial flow fan (8) is integrated in the inner hub (4) for generating a cooling air flow for the fan drive (6) and/or the drive electronics arrangement (7).

Abstract: The invention relates to an axial flow fan (1) comprising a stationary hub (2); comprising an annular stationary frame (3), which surrounds the hub (2) on the outer peripheral side and which is connected to the stationary hub (2) via at least one strut (4, 5, 6); and comprising a fan wheel (8), which is in drive connection with a fan wheel drive (9), which has a rotating fan wheel hub (10), and which has a plurality of fan wheel blades (11), which each comprise a back edge (12), characterized in that the contour of the strut (4, 5, 6) is designed as sine wave shaped, and wherein the back edge (12) is preferably designed as toothed at least in a partial area (13).

Abstract: The invention refers to a fan system (10) comprising a fan shroud (14) and a ring fan (12) having a hub (30), a plurality of fan blades (32), and a ring structure (34). The ring structure (34) has a ring member (46) and a flange member (48), the ring member (46) having a hollow cylindrical shape, the flange member (48) extending radially outwardly from the ring member (46). The fan shroud (14) has an annular shroud flange (54), a shroud body (56) and a plurality of shroud guide vanes (58), the shroud flange (54) extending radially outwardly from the shroud body (56) and being disposed along the rotary axis (A) between the flange member (48) and the shroud body (56), the shroud body (56) being disposed about the ring member (46) and having a first body portion (70), a second body portion (72) and a divergent nozzle (74).

Abstract: The invention relates to a method for producing a stator module (10) for an electric motor. The method comprises the following steps: provision of a core (100) comprising a centrally-arranged bearing seat (130), an annular yoke (110), and a plurality of teeth (120) which extend radially outward from the annular yoke (110); arrangement of a bearing (200) in the bearing seat (130); arrangement of a connector assembly (300) on a radial side surface of the yoke (110); and overmolding the core (100) and the connector assembly (300) with an insulating material (400) so that the connector assembly (300) is fixed on the core (100), wherein the insulating material (400) defines an axial position of the bearing (200) in the bearing seat (130) after the overmolding.