A fan wheel with a hub is centrally supported with respect to a drive and coaxially rotatable with the hub between stops relative to the hub. The fan wheel having fan blades extending radially from the hub are rotatable about their axes in a range delimited by the stops. Overlaying the rotational support between the stops of the hub, a rotational support between the hub and the drive is provided including a planetary drive in operative arrangement with an adjustment control ring of the driven hub. The fan blades are rotatable in the hub about their blade axes, and adjustment of the blade angles of the fan blades via drive connections to the adjustment control ring, which connections operate in a manner superimposed on one another starting from the drive of the fan wheel.

The invention relates to a fluid pump comprising at least one impeller blade (1, 1′, 1″) which is rotatable about an axis of rotation (3) and conveys a fluid in operation and comprising a support device (4, 6, 7, 8, 9, 10, 12, 12′, 13, 13′, 14, 14′, 15, 17) which supports the at least one impeller blade (1, 1′, 1″) in at least one support region, wherein the support device is changeable between a first state in which the rotor is radially compressed and a second state in which the rotor is radially expanded; and wherein at least one impeller blade extends at least partly radially inwardly with respect to the axis of rotation (3) from the support region/support regions in the radially expanded state of the rotor.

The invention relates to a fluid pump comprising at least one impeller blade (1, 1′, 1″) which is rotatable about an axis of rotation (3) and conveys a fluid in operation and comprising a support device (4, 6, 7, 8, 9, 10, 12, 12′, 13, 13′, 14, 14′, 15, 17) which supports the at least one impeller blade (1, 1′, 1″) in at least one support region, wherein the support device is changeable between a first state in which the rotor is radially compressed and a second state in which the rotor is radially expanded; and wherein at least one impeller blade extends at least partly radially inwardly with respect to the axis of rotation (3) from the support region/support regions in the radially expanded state of the rotor.

Some embodiments of the present disclosure provides a head shaking device and a fan. The head shaking device includes a fixing assembly; and a rotating assembly, which rotates relative to the fixing assembly in a reciprocating manner, wherein one of the fixing assembly and the rotating assembly includes at least one first connecting structure, the other includes at least one second connecting structure, and the first connecting structure is rotatably clamped with the second connecting structure.

Some embodiments of the present disclosure provides a head shaking device and a fan. The head shaking device includes a fixing assembly; and a rotating assembly, which rotates relative to the fixing assembly in a reciprocating manner, wherein one of the fixing assembly and the rotating assembly includes at least one first connecting structure, the other includes at least one second connecting structure, and the first connecting structure is rotatably clamped with the second connecting structure.

A cooling fan and an electronic device are provided. The cooling fan comprises a plurality of blades disposed in a circumferential direction of a rotating shaft. The plurality of blades includes a first blade and a second blade. A windward surface of the first blade includes a first alignment part and a first offset part. The first alignment part is aligned with a windward surface of the second blade, and the first offset part and the windward surface of the second blade are arranged in a staggered manner.

A handheld fan includes a housing, a fan assembly mounted in the housing and close to a rear portion of the housing, a semiconductor chilling plate mounted in the housing and arranged in front of the fan assembly, and a cold conducting piece arranged on a front end of the housing. A front end surface of the semiconductor chilling plate is a cooling surface. The cold conducting piece is attached to the front end surface of the semiconductor chilling plate. An air outlet is defined between the cold conducting piece and the housing.

An air moving device includes a housing member, an impeller assembly, and a nozzle assembly. The nozzle assembly can include one or more angled vanes set an angle with respect to a central axis of the air moving device. The air moving device can output a column of moving air having an oblong and/or rectangular cross-section. A dispersion pattern of the column of moving air upon the floor of an enclosure in which the air moving device is installed can have an oblong and/or rectangular shape. The dimensions of the dispersion pattern may be varied by moving the air moving device toward or away from the floor, and/or by changing the angles of the stator vanes within the nozzle assembly.

A fan assembly and an inverter are provided. The fan assembly includes a fan guard, a fan body and a noise reduction mounting member. The fan body directly faces an air inlet, the air inlet is covered by a fan guard, and the noise reduction mounting member is arranged on the fan body, to provide a preset distance between the fan body and the fan guard, and the noise reduction mounting member is configured to mount the fan body on a to-be-mounted component in a buffered manner. The distance between the fan body and the fan guard can reach the preset distance due to the noise reduction mounting member. In addition, the noise reduction mounting member plays a vibration isolation function between the fan body and the to-be-mounted component, which improves the sound quality.

Provided is an axial fan including: a rotor blade having a rotation axis along an air-blowing direction; and a casing, wherein the casing includes: an outer frame portion housing the rotor blade; a cylindrical base portion located on the rotation axis; and a fixed blade provided between an inner peripheral surface of the outer frame portion and an outer peripheral surface of the base portion and downstream of the rotor blade in the air-blowing direction, the fixed blade includes a wind receiving surface, and the wind receiving surface in a first cross section, along the air-blowing direction, of the fixed blade has a smaller blade curvature than the wind receiving surface in a second cross section of the fixed blade along a cutting plane line at a position moved in a rotation direction of the rotor blade from a cutting plane line of the first cross section.