Abstract: An axial fan for use with a wall ring plate includes a housing having an inlet region and a rotor. The rotor has an increased rotor diameter compared to a standardised rotor diameter. On the inlet side, the inlet region has a tapered section that narrows in an arched manner in a cross-sectional view from an inlet diameter to a wall ring diameter. The axial width and radial length of the tapered section are formed in a predetermined ratio.

Abstract: An axial fan, having an inner electric motor and a fan wheel connected to the electric motor so as to rotate with it and has a plurality of wheel blades defining a blade length and extend outwardly from the electric motor. A fan housing surrounds the fan wheel. The fan housing is connected to the motor via holding struts which extend to the outside from the motor to the fan housing. A motor housing is provided on the motor behind the fan wheel and accommodates a motor electronics system. A flow duct having an inflow opening and an outflow opening is fastened to the motor behind the fan wheel such that the inflow opening is arranged offset to the outside with respect to the outflow opening. The outflow opening is oriented in such a way that an air flow which exits the outlet opening is guided onto the motor housing.

Abstract: A motor, comprising an electronics housing, a stator having a stator bushing, and a rotor. The motor can be fastened to a fastening wall by means of the stator bushing. The motor according to the invention has an air conducting element and an air conveying element. The air conveying element is connected to the rotor in a rotationally fixed manner. The air conducting element surrounds the stator bushing and forms a flow space between the air conducting element and an outer circumference of the stator bushing. The flow space is open on the side of the electronics housing in the direction of the fastening wall through at least one flow gap. The air conducting element opens with an intake opening via a sealing gap in a rotor-side throughflow opening of the air conducting element.

Abstract: The invention relates to a blade for a fan impeller. In particular, the invention relates to the geometric configuration of the blade in its end area facing a hub. Furthermore, the invention relates to a fan impeller. A blade according to the invention for a fan impeller has an end area facing a hub, whereby the blade has at least one rib in the end area facing the hub, whereby the rib has an outer contour that simulates a flow profile.

Abstract: The invention relates in particular to a ventilator wheel of an axial ventilator, which includes multiple blades, each having radially outward extending blade forward edges and radial outer edges on the outlet side, wherein a transition from the radial outer edges to the blade forward edges is formed, in each case with a projection extending in the circumferential direction relative to the adjacent, radially outward extending blade forward edges, wherein a seamless transition is formed from the radial outer edge portion (7) to a region of the respective blade situated radially further inward.

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: An axial fan (1) having a motor comprising a stator (2) and a rotor (3), wherein blades (4), which move a gaseous medium in an axially directed main flow direction (S) from an inlet side (E) to an outlet side (A) of the fan, project from the outer periphery (U3) of the rotor (3). For enhanced performance with regard to efficiency in a structurally less costly manner, a rotation-symmetric flow guiding element (5) is mounted on the outlet side (A) directly or indirectly on the stator (2) and concentrically with respect to a stator hub (2a). The flow guiding element to have an outer diameter (D5) that is greater than the outer diameter (D2) of the stator hub (2a) greater than the outer diameter (D3) of the rotor (3), and smaller than the diameter (D4) of a perimeter (U4) around the blades (4).

Abstract: A motor, comprising an electronics housing, a stator having a stator bushing, and a rotor. The motor can be fastened to a fastening wall by means of the stator bushing. The motor according to the invention has an air conducting element and an air conveying element. The air conveying element is connected to the rotor in a rotationally fixed manner. The air conducting element surrounds the stator bushing and forms a flow space between the air conducting element and an outer circumference of the stator bushing. The flow space is open on the side of the electronics housing in the direction of the fastening wall through at least one flow gap. The air conducting element opens with an intake opening via a sealing gap in a rotor-side throughflow opening of the air conducting element.

Abstract: A radial fan wheel arrangement includes a circular bottom plate (2) and a circular cover plate (3) with a central inflow opening (4), as well as wheel blades (6) running between the bottom plate (2) and the cover plate (3). Pocket-shaped recesses (9) are configured at least on one side of a plate surface in the space between the wheel blades (6) in an outer edge area of the cover plate (3) or the bottom plate (2) or both. At least one counterweight (13) is mounted on at least one of the two plates (2, 3) on a plate edge in an area of the pocket-shaped recesses (9).

Abstract: A ventilation device, in particular for heating, cooling and/or humidifying air in residential buildings, includes a duct-shaped housing (1) with an air inlet opening (2) and an air outlet opening (3), and a fan impeller (6) as well as a filter unit, heat exchange unit and/or heating coil unit (14) arranged in the main flow direction (Z) of an air flow generated by the fan impeller (6). An air guiding device (17) is arranged in the flow direction (Z) of the air flow in front of a suction nozzle (16)—configured as a flow conditioner, includes a bar structure with air guiding bars-such that a flow inlet opening is configured on the suction side at an axial height in front of the flow inlet opening (15) by the bar structure whose opening surface is smaller than the opening surface of the flow inlet opening (15).

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 diagonal fan has a diagonal fan impeller (1) which is fastened to a rotor (2) of an external rotor motor (3) and which is arranged between a front plate (5), which has an in particular central inflow opening (6), and a motor bracket (4). The motor bracket (4) is connected to the front plate (5) via a plurality of peripherally arranged spacers (21). Here, the front plate (5) and the motor bracket (4) are formed as plastic or metal injection molded parts. The spacers (21) are formed, as plastic or metal injection parts, in one piece with the front plate (5) or with the motor bracket (4).

Abstract: An axial fan, having an inner electric motor and a fan wheel connected to the electric motor so as to rotate with it and has a plurality of wheel blades defining a blade length and extend outwardly from the electric motor. A fan housing surrounds the fan wheel. The fan housing is connected to the motor via holding struts which extend to the outside from the motor to the fan housing. A motor housing is provided on the motor behind the fan wheel and accommodates a motor electronics system. A flow duct having an inflow opening and an outflow opening is fastened to the motor behind the fan wheel such that the inflow opening is arranged offset to the outside with respect to the outflow opening. The outflow opening is oriented in such a way that an air flow which exits the outlet opening is guided onto the motor housing.