Abstract: The invention relates to a fan for gaseous media, having an impeller (26), which has a support disc (33) with several blades (36) arranged thereon, having a covering disc (40) or an inlet nozzle (41), which is opposite the blades (36) arranged on the support disc (33), having a flow channel (25) formed by a housing (12), having a receiving apparatus (60) arranged in the flow channel (25), which has a motor holder (61), on which a motor (50) is fastened, which drives the support disc (33) rotatably via a driveshaft (51), wherein at least one holding apparatus (54) is provided, which is fixed in addition to and separate from the motor holder (61) of the motor (50).

Abstract: A diagonal impeller for a diagonal fan (11), comprising a carrier plate (33) over the outer periphery of which a plurality of vanes (36) are distributed and which consists of a rotationally symmetrical main body (60), which upstream has a closed head region (63), which transitions in a flowing manner into a lateral surface (67), which extends as far as the foot region (68), wherein the diameter of the foot region (68) is greater than that of the head region (63) and the vanes (36) extend at least over portions along the lateral surface (67), and wherein the lateral surface (67) has at least one S-shaped undulation (70) between the foot region (68) and the head region (63). (See FIG. 1).

Abstract: A diagonal impeller for a diagonal fan (11), comprising a carrier plate (33) over the outer periphery of which a plurality of vanes (36) are distributed, wherein the vanes (36) have a leading edge (81) and a trailing edge (82), which are interconnected by outer edges (84) formed at the vane end (37), and the leading edge (81) and the trailing edge (82) extend in a manner directed radially outwardly and inclined upstream, wherein a vane face of the vane (36) is three-dimensionally twisted and the vane (36) is inclined in the direction of rotation relative to the meridian line, such that the leading edge (81) is oriented ahead of the trailing edge (82), and wherein an outer leading corner region (86) formed by the leading edge (81) and the outer edge (84) is inclined in an increased manner in the direction of rotation and/or a trailing corner region (88) formed between the trailing edge (82) and the outer edge (84) is inclined in an increased manner against the direction of rotation. (See FIG. 1).

Abstract: The invention relates to a diagonal fan for gaseous media, with a diagonal impeller (26) having a carrier plate (33) with several vanes (36) arranged thereon, with a guide device (28) that is connected downstream to the diagonal impeller (26) for increasing the pressure of the medium, and with a cover plate (40), which encloses the carrier plate (33) radially and which extends, at least in sections, axially along the carrier plate (33), wherein a gap (43) is formed between the vane ends (37) of the vanes (36) on the carrier plate (33), which extend towards the cover plate (40), and wherein the vane ends (37) of the vanes (36) on the carrier plate (33) and a peripheral face (39) of the cover plate (40), which is allocated to the vane ends (37), can be positioned axially relatively to one another for adjusting a gap width S of the gap (43) with at least one axial adjustment unit (61) (see FIG. 1 for this).

Abstract: A diagonal fan for gaseous media has a diagonal impeller with a plurality of vanes, which are fastened on a carrier plate, and a guide device, adjoining the diagonal impeller in the axial direction on the outflow side, for increasing the pressure of the medium, with a plurality of guide vanes. The vanes of the diagonal impeller and/or the guide vanes of the guide device are three-dimensionally twisted. By means of an intake unit, the gaseous medium can be directed into the diagonal impeller. The intake unit and/or an exhaust unit, by means of which the gaseous medium can be directed out of the guide device, is, or are, provided as an exchangeable module and can be fastened on the diagonal fan by means of a fastening element.