Abstract: The invention relates to an impeller machine with an aero rotor (14) for generating an air flow along an annular space (31) enclosed between an impeller housing (15) and a motor housing (19). The motor housing (19) is arranged in an inner chamber of the impeller housing (15), and an electric motor (16) is arranged in the interior of the motor housing (19). The electric motor (16) comprises a motor stator (44), which is connected to the motor housing (19), and a magnetic rotor (43), which is connected to the aero rotor (14). A cooling air channel (40) extends in the interior of the motor housing (19) between an inlet end (33) and an outlet end (35), and a liquid channel (46) has an opening (47) which is arranged in a cooling air channel (40) suction arranged upstream of the electric motor (16). The invention also relates to a method for operating an impeller machine.

Abstract: The invention relates to an impeller machine comprising an impeller housing (15) and a motor housing (19), wherein the motor housing (19) is arranged in an interior of the impeller housing (15). An aerostator (20) forms a connection between the impeller housing (15) and the motor housing (19). A cable (26, 30) extends between the impeller housing (15) and the motor housing (19). The aerostator (20) comprises an aerostator body (34) and an aerostator cover (35) which together span a contour in the form of a wing profile. The cable (26, 30) is guided in a cavity (32) which is arranged between the aerostator body (34) and the aerostator cover (35). The invention also relates to a method for mounting an impeller machine.

Abstract: A method for operating an impeller, in the case of which method the impeller comprises an impeller housing (15) and a motor housing (19) which is arranged in the impeller housing. A motor (16) is arranged in an interior space (36, 38) of the motor housing (19), wherein an impeller rotor (14) is driven by way of the motor (16), in order to generate an air stream along an annular chamber (31) which is enclosed between the impeller housing (15) and the motor housing (19). A positive pressure is applied in the interior space (36, 38) of the motor housing (19), with the result that a leakage flow which is directed to the outside from the interior space (36, 38) of the motor housing (19) is produced through a sealing gap (37) which is arranged between the motor shaft (17) and the motor housing (19). The invention also relates to an associated impeller.

Abstract: An impeller machine having an impeller housing (15), having a motor housing (19) and having an aero stator (20) which extends between the impeller housing (15) and the motor housing (19), wherein the motor housing (19) is arranged in an interior of the impeller housing (15). The impeller machine comprises an aero rotor (14) for generating an air flow along an annular space (31) enclosed between the impeller housing (15) and the motor housing (19). The motor housing (19) is provided on its outer side with a cooling rib (21) which rises from the motor housing (19) and from a peripheral end. A portion (36) of the cooling rib (21) that is arranged upstream is arranged in a different circumferential position than a portion (37) of the cooling rib (21) that is arranged downstream.

Abstract: The invention relates to an impeller machine comprising an impeller housing (15) and a motor housing (19), wherein the motor housing (19) is arranged in an interior of the impeller housing (15). An aerostator (20) forms a connection between the impeller housing (15) and the motor housing (19). A cable (26, 30) extends between the impeller housing (15) and the motor housing (19). The aerostator (20) comprises an aerostator body (34) and an aerostator cover (35) which together span a contour in the form of a wing profile. The cable (26, 30) is guided in a cavity (32) which is arranged between the aerostator body (34) and the aerostator cover (35). The invention also relates to a method for mounting an impeller machine.