A ceiling fan, including: a rotary shaft, a stator, and a rotor. The rotor includes an inner annular chamber, a magnetic-shoe fixation portion, a connection portion, and a bearing installation portion. The stator is housed in the inner annular chamber of the rotor. The bearing installation portion is disposed at one side of the magnetic-shoe fixation portion. One end of the connection portion is fixed on the magnetic-shoe fixation portion, and the other end of connection portion is fixed on the bearing installation portion. The magnetic-shoe fixation portion, the bearing installation portion are integrated with the connection portion. The geometric centers of the rotary shaft, the stator, the magnetic-shoe fixation portion, and the bearing installation portion are located in a straight line.

A turbomachine has a housing with at least one flow channel, an impeller which is arranged in the housing, and a drive motor. The drive motor is used to drive the impeller in order to suction a fluid into the housing through the at least one flow channel and/or to convey the fluid out of the housing through the at least one flow channel. The housing is produced by an additive manufacturing process. Further disclosed is a turbomachine in which the impeller is produced in an injection molding method and is molded directly onto the rotor of a drive motor designed as an external rotor motor.

A fan, comprising blades (102), an upper hub (111), and a lower hub (112). Each blade (102) comprises a connecting part (211). The connecting part (211) is clamped between a lower surface of the upper hub (111) and an upper surface of the lower hub (112). The lower surface of the upper hub (111) is provided with an upper hub connecting area, and the upper surface of the lower hub (112) is provided with a lower hub connecting area. An upper surface and a lower surface of the connecting part (211) are separately provided with a junction surface extending from the connecting part (211). The lower surface of the upper hub (111) and the upper surface of the lower hub (112) are separately provided with a matching surface matching the junction surface. The junction surface and the matching surface are arranged in the radial direction and/or circumferential direction of the upper hub (111) and the lower hub (112), and are configured to match with each other to impede the movement of at least two blades (102) in the circumferential direction and/or radial direction with respect to the upper hub (111) and the lower hub (112). The fan structure can prevent the movement of the blades (102) with respect to the upper hub (111) and the lower hub (112). The connecting part (211) and the fan body (201) are not easy to break and can be easily assembled, such that better stability can be ensured while the cost is low.

A spacer is disposed between a rotor and a bearing of an electric supercharger to fix the rotor. The spacer has a tapered surface with a diameter decreasing toward the bearing in an outer circumferential surface of the spacer. An area of an end surface of the spacer on a rotor side is larger than an area of an end surface of the spacer on a bearing side. A balance correction part that corrects balance of the spacer is disposed inside a recess formed in the end surface. A region of the end surface located on an outer side of the recess relative to a central axis of the spacer constitutes a surface coming in contact with the rotor.

Ceiling fans suspended from a structure have a motor to drive blades for moving a volume of air about an area. The motor, with a rotor and stator, can be electrically coupled to the structure. Blades mount to the rotor such that the blades are rotatably driven by the motor. A motor case can mount to the rotor and encase the stator.

Disclosed is a turbo fan including a rotor housing and a fan blade structure. The fan blade structure is arranged around the rotor housing and fixed to the periphery of the rotor housing and includes multiple spaced fan blades extending in the same direction. A section of the fan blade is an arc and the length of the arc is - of the circumference of a circle in which the arc is located. The turbo fan sets the fan blade with an arc section, and when the turbo fan rotates in the direction corresponding to a recess of the fan blade, the arc structure of the fan blade can push more air to increase air volume.

A motor includes a rotor including a shaft extending along a central axis, a stator facing the rotor in a radial direction, a circuit board electrically connected to a coil of the stator, a wiring line with one end connected to the circuit board, a base fixed to an attachment object, and a wiring holding portion integrally provided with the base and holding a longitudinal portion of the wiring line. The wiring holding portion includes a first guide portion that guides the wiring line drawn outward in the radial direction from the circuit board in an axial direction along the central axis, and a second guide portion that guides the wiring line guided in the axial direction by the first guide portion outward in the radial direction and restrains displacement of the wiring line outward in the radial direction.

A fan motor apparatus is provided, which includes a blade; a rotary shaft; a hub; a rotor integrally molded with the blade, the rotor being fixed to the rotary shaft; and a protection cover including: a lid portion covering a top surface of the rotor; and an intake port configured to take air into the lid portion.

A rotor (10) with a rotor pot (1), a hub (2) and a shaft (3) are provided, wherein the rotor pot (1), the hub (2) and the shaft (3) are rotatable about an axis of rotation (A) of the rotor (10).

The shaft (3) is accommodated in a hub bushing (21) of the hub (2) to form a shaft-hub connection.

The rotor pot (1) has a receptacle (11) for the hub (2) and the hub (2) is secured to the rotor pot (1) at least in the region of the receptacle (11).

An edge portion (111) of the receptacle (11) of the rotor pot (1) extends at least partially parallel to the axis of rotation (A).

A method is also provided for producing the rotor (10).