Abstract: A fan, such as an axial, radial, or diagonal fan, includes a fan impeller and an outlet guide device located in a housing/flow channel downstream of the fan impeller. The outlet guide device may include outlet guide blades that, when viewed in the spanwise direction or radial direction, extend over only a portion of the flow area.

Abstract: The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.

Abstract: A fan, such as an axial, radial, or diagonal fan, includes a fan impeller and an outlet guide device located in a housing/flow channel downstream of the fan impeller. The outlet guide device may include outlet guide blades that, when viewed in the spanwise direction or radial direction, extend over only a portion of the flow area.

Abstract: Disclosed is a ventilator with an electrical drive and at least one rotating or non-rotating functional unit associated with the drive or with a structural component of the drive for generating and/or influencing an air current, wherein the functional unit is arranged coaxially around the drive or in front of it or after it, and wherein the association takes place directly or indirectly in a positive and non-positive manner by the intermeshing and mutual bracing of connection means.

Abstract: The invention relates to a fan wheel having blades (11) which are distributed over the circumference and are connected to one another in the circumferential direction via at least one ring. The fan wheel consists of at least three integrally formed segments (I to VII). Said segments comprise at least one respective ring portion (1) of at least one ring as well as either a blade (II) or at least a portion of the blades. The segments (I to VII) are joined together to form the fan wheel. The ring portions (1) lie against each other with edges (4, 5) which form the joining areas (15, 16) that are disposed transversely with respect to the circumferential direction of the fan wheel. At least one edge (4) of the ring portion (1) of each segment (I to VII) is provided with at least one projecting form-fitting part (18), and at least one edge (4, 5) of the ring portion (1) of each segment (I to VII) is provided with at least one recess (17) which is at least approximately complementary to the form-fitting part (18).

Abstract: An axial fan has a housing and a motor with motor shaft and blower wheel attached to the motor shaft. The blower wheel has fan blades attached to a hub and provided with a leading and a trailing edge, respectively. A suspension arrangement is provided with a brace part made from flat material. The brace part connects motor and housing and has a length measured in a direction from motor to housing. The brace part is arranged on edge in an airflow direction and has a width measured in the airflow direction. The brace part has two limbs extending lengthwise in length direction of the brace part. The limbs are spaced apart from each other and delimit opposite sides of an opening formed by a punch-out in the flat material and extending along some of the length. The limbs are arranged one behind the other in airflow direction.

Abstract: A diagonal or radial fan comprises a rotating motor fan wheel and an upright guide device that in terms of flow is connected downstream of the motor fan wheel, wherein the motor fan wheel comprises a motor and an impeller with blades that is rotary driven by the motor, said blades being arranged between an impeller cover plate and an impeller base disk, wherein the guide device comprises at least one guide device cover plate and one guide device base disk, and wherein the guide device cover plate and the guide device base disk are in continuous elongation to the impeller cover plate and the impeller base disk.

Abstract: An impeller wheel for fans has a bottom disc, a cover disc, and three-dimensionally shaped blades connected to the bottom disc and the cover disc. The bottom disc, cover disc, and the blades form a one-piece part. The blades have a leading edge and a trailing edge, wherein the leading edge and the trailing edge each have a median diameter. In a projection onto a cylinder that is coaxial with a rotation axis 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 and a second extension of the trailing edge and/or the leading edge is positioned at a second angle relative to a line parallel to the rotation axis. At least one of the first and second angles is different from 0°.

Abstract: The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.

Abstract: Disclosed is a ventilator with an electrical drive and at least one rotating or non-rotating functional unit associated with the drive or with a structural component of the drive for generating and/or influencing an air current, wherein the functional unit is arranged coaxially around the drive or in front of it or after it, and wherein the association takes place directly or indirectly in a positive and non-positive manner by the intermeshing and mutual bracing of connection means.

Abstract: A diagonal or radial fan comprises a rotating motor fan wheel and an upright guide device that in terms of flow is connected downstream of the motor fan wheel, wherein the motor fan wheel comprises a motor and an impeller with blades that is rotary driven by the motor, said blades being arranged between an impeller cover plate and an impeller base disk, wherein the guide device comprises at least one guide device cover plate and one guide device base disk, and wherein the guide device cover plate and the guide device base disk are in continuous elongation to the impeller cover plate and the impeller base disk.

Abstract: The invention relates to a fan wheel having blades (11) which are distributed over the circumference and are connected to one another in the circumferential direction via at least one ring. The fan wheel consists of at least three integrally formed segments (I to VII). Said segments comprise at least one respective ring portion (1) of at least one ring as well as either a blade (II) or at least a portion of the blades. The segments (I to VII) are joined together to form the fan wheel. The ring portions (1) lie against each other with edges (4, 5) which form the joining areas (15, 16) that are disposed transversely with respect to the circumferential direction of the fan wheel. At least one edge (4) of the ring portion (1) of each segment (I to VII) is provided with at least one projecting form-fitting part (18), and at least one edge (4, 5) of the ring portion (1) of each segment (I to VII) is provided with at least one recess (17) which is at least approximately complementary to the form-fitting part (18).

Abstract: An impeller wheel for fans has a bottom disc, a cover disc, and three-dimensionally shaped blades connected to the bottom disc and the cover disc. The bottom disc, cover disc, and the blades form a one-piece part. The blades have a leading edge and a trailing edge, wherein the leading edge and the trailing edge each have a median diameter. In a projection onto a cylinder that is coaxial with a rotation axis 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 and a second extension of the trailing edge and/or the leading edge is positioned at a second angle relative to a line parallel to the rotation axis. At least one of the first and second angles is different from 0°.

Abstract: A ventilator for use in air-conditioning and refrigeration technology has a housing of plastic material in a one-part configuration having integrally formed therein an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor. A drive motor is arranged in the housing. An impeller wheel is rotatably supported about a central axis in the housing and driven by the drive motor. A protective screen is connected to the housing. A motor support is connected by the outlet guide vanes to the housing. The impeller wheel has vanes with radially outwardly positioned vane ends, wherein the vane ends are embodied as flow elements (winglets). The flow elements are spaced at a minimal spacing relative to a sidewall of the housing. The drive motor is an external rotor motor that is embodied either as an alternating current asynchronous motor (AC) or an electronically commutated direct current motor (EC).

Abstract: The axial fan has a motor (1), on the rotor side of which an impeller is fixed, wherein fan blades (24) with a front and a rear edge (26, 27) project from the hub of said impeller. The motor (1) is fixed to a housing (3) by means of a suspension (2). The suspension has a bracing part (4 to 8) made of a flat material, said bracing part connecting the motor (1) to the housing (3) and being arranged in an approximately vertical manner in the flow direction of the air. The aim of the invention is to design the axial fan such that the axial fan has a high overall efficiency and only a low flow resistance. This is achieved in that the bracing part (4 to 8) is provided with at least one recess (7) over a part of the length of the bracing part. The flow resistance due to the bracing part is minimized by means of the recess. The recess reduces the weight of the axial fan.

Abstract: A ventilator for use in air-conditioning and refrigeration technology has a housing of plastic material in a one-part configuration having integrally formed therein an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor. A drive motor is arranged in the housing. An impeller wheel is rotatably supported about a central axis in the housing and driven by the drive motor. A protective screen is connected to the housing. A motor support is connected by the outlet guide vanes to the housing. The impeller wheel has vanes with radially outwardly positioned vane ends, wherein the vane ends are embodied as flow elements (winglets). The flow elements are spaced at a minimal spacing relative to a sidewall of the housing. The drive motor is an external rotor motor that is embodied either as an alternating current asynchronous motor (AC) or an electronically commutated direct current motor (EC).