Abstract: A housing for a fan or blower, in particular an axial fan, includes a wall ring (2) having an inlet nozzle section (3), an outer diffuser (6) having an inlet flow opening (7) and an outlet flow opening (8), and a holder for an electric motor (9) of the fan. The holder is arranged in an inner space of the housing. The outer diffuser (6) is formed by at least two partial ring sections that are connected to the outer circumferential surface via mechanical connection elements. The holder includes several struts (14) that are fastened to an inner circumferential surface of the outer diffuser (6) by one end, are circumferentially spaced apart, and are fastened in the edge region of the inlet flow opening (7). The struts can be installed by their other end to a motor flange (16) of the motor housing (17) of the electric motor (9).

Abstract: A diffuser (3) for a fan (2) of axial, radial or diagonal type of construction, has an inlet opening (10) and having an outlet opening (20) for a gaseous medium which flows through a diffuser interior (I), which is enclosed by an outer housing (30), in an axially oriented main flow direction (S) from the inlet opening (10) to the outlet opening (20). The cross section of the diffuser interior (I) increases from the cross section (11) of the inlet opening to the cross section (21) of the outlet opening (20), wherein the outer housing (30) forms an outer diffuser part (AD) which delimits the diffuser interior (I) to the outside. Along the main flow direction (S), the cross section of the outer diffuser part (AD) changes from a circular cross section (31) at the inlet opening (10) to a non-circular cross section (32) at the outlet opening (20).

Abstract: The invention relates to a ventilator, having an electrical ventilator motor and an electrical connection device for connecting electrical motor lines leading to the motor to external electrical connecting lines. The connection device has a terminal box mounted to a device part comprising electrical contact elements, and has an additional connection part, to which the motor lines are connected. The terminal box is releasably connected to the additional connection part via electrical plug-in connections.

Abstract: The invention relates to a wall ring for receiving an axial fan in particular, comprising an annular body with a central longitudinal axis, a flow inlet opening, a flow outlet opening, and an electric heating element in particular, said heating element being arranged on at least some sections of the circumference of the annular body. A profiled covering section made of a thermally insulating material is removably fixed to an outer surface of the annular body at least in some sections of the circumference, said profiled covering section together with the annular body forming a receiving area in the region of the annular wall of the annular body in order to receive the electric heating element.

Abstract: The invention relates to a wall ring for receiving an axial fan in particular, comprising an annular body with a central longitudinal axis, a flow inlet opening, a flow outlet opening, and an electric heating element in particular, said heating element being arranged on at least some sections of the circumference of the annular body. A profiled covering section made of a thermally insulating material is removably fixed to an outer surface of the annular body at least in some sections of the circumference, said profiled covering section together with the annular body forming a receiving area in the region of the annular wall of the annular body in order to receive the electric heating element.

Abstract: A housing for receiving an electronic circuit (4) having a plurality of components (5) having a carrier plate (7) and a housing cover (8) including a circumferentially enclosing wall (9) on the carrier plate (7) and a cover part (10) on the wall (9), which cover part (10) lies opposite the carrier plate (7). A volume compensation element (11) is attached on the carrier plate (7) in an interior (12) of the housing cover (8) which is enclosed in a pressure-tight manner from an external atmosphere. The volume compensation element (11) is elastically formed providing a variable volume for compensation of pressure fluctuations in the interior (12), which variable volume occurs with a change in position of the volume compensation element (11) relative to the carrier plate (7). A gap between the volume compensation element (11) and the carrier plate (7) is connected to the external atmosphere.

Abstract: A housing for a fan or blower, in particular an axial fan, includes a wall ring (2) having an inlet nozzle section (3), an outer diffuser (6) having an inlet flow opening (7) and an outlet flow opening (8), and a holder for an electric motor (9) of the fan. The holder is arranged in an inner space of the housing. The outer diffuser (6) is formed by at least two partial ring sections that are connected to the outer circumferential surface via mechanical connection elements. The holder includes several struts (14) that are fastened to an inner circumferential surface of the outer diffuser (6) by one end, are circumferentially spaced apart, and are fastened in the edge region of the inlet flow opening (7). The struts can be installed by their other end to a motor flange (16) of the motor housing (17) of the electric motor (9).

Abstract: The invention relates to a housing for a ventilator (1) or fan, in particular an axial ventilator, comprising an annular housing wall (2) which encloses a flow channel (3) having an inflow opening (4) and an outflow opening (6). The flow channel (3) has a circular cross-section in a plane which is perpendicular to a center longitudinal axis (X-X) and a motor mount (7) for an electrical motor (8) of the ventilator (1) within the flow channel (3). The flow channel (3) has a first cylinder section (9), connected to the inflow opening (4), and a second truncated cone section (11), connected thereto by the small truncated cone surface, which expands toward the outflow opening (6). The mount (7) consists of a plurality of stays (12), fastened by one end to the second truncated cone section (11), which extend from an inner circumferential surface of the truncated cone section (11) in the direction of the longitudinal axis (X-X) and have, on the other, internal ends, mount sections for the electrical motor (8).

Abstract: The invention relates to a ventilator, having an electrical ventilator motor and an electrical connection device for connecting electrical motor lines leading to the motor to external electrical connecting lines. The connection device has a terminal box mounted to a device part comprising electrical contact elements, and has an additional connection part, to which the motor lines are connected. The terminal box is releasably connected to the additional connection part via electrical plug-in connections.

Abstract: The invention relates to a wall ring for an axial fan comprised of a supporting frame (1) on which a circular connecting piece (2) is formed, inside which the axial fan is arranged. The supporting frame (1) is assembled from a plurality of frame elements (6) by means of form and force-fitting connecting elements. The circular connecting piece (2) is formed of a plurality of circular segments (22) arranged circumferentially one after the other, said circular segments being connected to each other and to the supporting frame (1) by means of form and force-fitting or material-bonded connections or by such connection elements, respectively.

Abstract: A housing for receiving an electronic circuit (4) having a plurality of components (5) having a carrier plate (7) and a housing cover (8) including a circumferentially enclosing wall (9) on the carrier plate (7) and a cover part (10) on the wall (9), which cover part (10) lies opposite the carrier plate (7). A volume compensation element (11) is attached on the carrier plate (7) in an interior (12) of the housing cover (8) which is enclosed in a pressure-tight manner from an external atmosphere. The volume compensation element (11) is elastically formed providing a variable volume for compensation of pressure fluctuations in the interior (12), which variable volume occurs with a change in position of the volume compensation element (11) relative to the carrier plate (7). A gap between the volume compensation element (11) and the carrier plate (7) is connected to the external atmosphere.

Abstract: Disclosed is a rotor (1) for an electric rotor motor, consisting of a rotor bell (2) with a peripheral wall (4) and at least one one-sided rotor base (6) to enclose a stator, in particular as a part of a motor housing with a high IP rating, for example IP54 per DIN/IEC-EN 60034-5. The rotor bell (2) features a heat sink (12) with high heat conductivity that extends through the rotor base (6) in such a way that the motor heat arising on the inside can be removed via the heat sink (12) through the rotor base (6) to the outside into the environment. Further, the invention relates to an electric rotor motor, in particular with an encapsulated motor housing with a high IP-protection system, for example IP54 per DIN/IEC-EN 60034-5, consisting of a stator and a rotor (1) enclosing the stator in an embodiment of the above-described type.

Abstract: A diffuser (3) for a fan (2) of axial, radial or diagonal type of construction, has an inlet opening (10) and having an outlet opening (20) for a gaseous medium which flows through a diffuser interior (I), which is enclosed by an outer housing (30), in an axially oriented main flow direction (S) from the inlet opening (10) to the outlet opening (20). The cross section of the diffuser interior (I) increases from the cross section (11) of the inlet opening to the cross section (21) of the outlet opening (20), wherein the outer housing (30) forms an outer diffuser part (AD) which delimits the diffuser interior (I) to the outside. Along the main flow direction (S), the cross section of the outer diffuser part (AD) changes from a circular cross section (31) at the inlet opening (10) to a non-circular cross section (32) at the outlet opening (20).

Abstract: A stator unit for an electric motor, in particular an external rotor motor, includes a stator with a stator laminate stack and stator windings and a stator bushing and a stator flange which is formed at one end. A housing flange of a housing for accommodating a motor controller or the like is fastened on the stator flange, and with motor connection contacts, which run from the stator through through-openings in the housing flange, and with fastening means, which run through fastening holes in the housing flange and are fastened in the stator. A sealing disk is arranged between the stator and the housing flange. The sealing disk has sealing regions made from elastic plastic, which are arranged and designed in such a way that direct and/or indirect sealing of the through-openings and/or the fastening holes is provided against the ingress of moisture.

Abstract: The invention relates to a wall ring for an axial fan comprised of a supporting frame (1) on which a circular connecting piece (2) is formed, inside which the axial fan is arranged. The supporting frame (1) is assembled from a plurality of frame elements (6) by means of form and force-fitting connecting elements. The circular connecting piece (2) is formed of a plurality of circular segments (22) arranged circumferentially one after the other, said circular segments being connected to each other and to the supporting frame (1) by means of form and force-fitting or material-bonded connections or by such connection elements, respectively.

Abstract: A stator arrangement for an electric motor. The stator arrangement including a laminated stator core with stator windings running through stator grooves and forming winding overhangs at each end face of the laminated stator core. The stator arrangement also includes an interconnection unit having a switching disk covering the winding overhangs on one end face of the stator. The switching disk further including at least one temperature monitor mounted thereon for monitoring the temperature of the stator windings. The temperature monitor being seated in a holding pocket that is resiliently connected to the switching disk in such a manner that, when positioned in one of the stator grooves, it is resiliently biased into engagement with a stator winding.

Abstract: The invention relates to an electric motor with a stator and an external rotor, comprised of a rotor bell and a rotor cover that acts as a fan wheel. The rotor bell has several apertures in its bell floor. The rotor cover has several exhaust ports. The rotor cover is shaped like a plate and consists of a plate base and an annular wall. The exhaust ports are preferably evenly distributed in the annular wall. The inside of the plate base of the rotor cover that faces the rotor bell has several radially extending interior blades that are fixedly connected to it.

Abstract: The present invention relates to a clamping member for pressing power components (9) against cooling surfaces of the cooling flanges (7) of a housing, particularly for receiving an electronic circuit. The clamping member comprises a housing frame (13) having at least one receiving chamber for the cooling flange (7) and the power semiconductor (9) to be contacted with the cooling flange (7), the receiving chamber being surrounded by the frame walls (14a, 14b, 15) of the housing frame. A pressure element (17) is disposed between a frame wall (14a, 14b) and the power component (9) disposed opposite thereof, or the cooling flange (7) disposed opposite thereof. A separating gap, into which an expanding element (18) can be introduced on one side non-positively and/or positively such that the power component (9) is pressed against the cooling flange (7), is provided between the pressure element (17) and the frame wall (14a, 14b).