A high-speed fan motor includes an air duct motor casing, fan blades, a motor stator, a motor rotating shaft, a rear end cover, and a Printed Circuit Board (PCB). The motor stator is installed in the air duct motor casing, the plurality of arc-shaped radial positioning plates surround the periphery of the motor stator, one end of the rear end cover is axially connected to the motor stator and/or the air duct motor casing. the plurality of arc-shaped radial positioning plates and the rear end cover surround to form an installation structure for installing the motor stator. first bearing and a second bearing are provided at two ends of the motor rotating shaft, respectively. And a first damping bushing and a second damping bushing are installed in the first bearing chamber and the second bearing chamber, respectively.

A fan with reduced friction and subject to much reduced wear includes a stator assembly and a rotating assembly. The stator assembly includes a base, a fixing shaft, and a stator. The fixing shaft is positioned at the base. The stator is positioned outside the fixing shaft. The rotating assembly includes a rotor, a bearing, and a magnetic member. The bearing is sleeved on the fixing shaft. The magnetic member is positioned on an inner wall of the rotor and is spaced apart from the stator. The magnetic member generates a magnetic force with the stator to drive the bearing to rotate around the fixing shaft while the bearing is not in any contact with the base and the stator.

A pressproof fan structure includes: a fan frame having an upper case and a lower case; a support shaft having one end inserted into the lower case, and the other end protruding out from the upper case; an oil-retaining bearing having a bearing hole, in which the support shaft is fitted; a rotor assembly fitted around and connected with the oil-retaining bearing; a restriction member fitted around the support shaft near the oil-retaining bearing; a thrust member fitted around the support shaft near the oil-retaining bearing; and a stator assembly disposed on the lower case near the oil-retaining bearing without contacting.

A turbo compressor includes a driving unit including a stator and a rotor that are configured to generate a rotational force and a rotary shaft that is connected to and rotated by the rotor, an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft and a casing that receives the driving unit and the impeller and supports the rotary shaft. The casing includes a first shell to which the stator is fixed and that rotatably supports the rotary shaft, and a second shell that is spaced apart from the first shell and surrounds the first shell. A shell passage is defined between the first and second shells. The discharged refrigerant cools the driving unit, which improves the efficiency of the compressor.

A cooling device includes a fan frame including a bottom plate and a base part disposed on the bottom plate, a stationary pillar coupled to the fan frame, and a fan assembly that is rotatably disposed about the stationary pillar. The fan assembly is supported on the stationary pillar by at least one bearing positioned between the fan assembly and the stationary pillar. The cooling device also includes a decorative plate coupled to the stationary pillar. The decorative plate has an identifying indicia that permits at least some light to pass therethrough. The cooling device further includes a light emitting assembly disposed on the fan frame and configured to emit light that is directed toward the identifying indicia.

In an aerodynamic bearing, an outer peripheral surface of a shaft and an inner peripheral surface of a sleeve face each other in a radial direction. The sleeve includes a through hole penetrating the sleeve in the radial direction. A space on a radially inner side of the sleeve communicates with an external space of a motor through the through hole. A stationary portion includes a wall portion radially overlapping the through hole with a gap interposed therebetween on a radially outer side of the through hole.

A cooling device includes a fan frame including a bottom plate and a base part disposed on the bottom plate, a stationary pillar coupled to the fan frame, and a fan assembly that is rotatably disposed about the stationary pillar. The fan assembly is supported on the stationary pillar by at least one bearing positioned between the fan assembly and the stationary pillar. The cooling device also includes a decorative plate coupled to the stationary pillar. The decorative plate has an identifying indicia that permits at least some light to pass therethrough. The cooling device further includes a light emitting assembly disposed on the fan frame and configured to emit light that is directed toward the identifying indicia.

A motor includes a rotor, a stator, and a circuit board below the stator. The stator includes an insulator to cover at least a portion of each of an upper surface, a lower surface, and circumferential side surfaces of each of teeth of the stator, coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween, and a drawn-out wire drawn out from the coils and electrically connected to the circuit board. A lower portion of the insulator includes a guide radially outward of the coils and including a wall extending downward from a lower surface of the insulator and a bend extending radially outward from a lower end of the wall. At least a portion of the drawn-out wire extends in a circumferential direction along a radially outer surface of the wall.

Apparatus for controlling the rotation about a longitudinal axis (X-X) of a fan (1) for cooling the cooling fluid contained in the radiator of a vehicle, comprising:a fixed support sleeve (3), internally hollow and extending parallel to the longitudinal axis (X-X) of rotation of the fan;a bell member (1a) for supporting the fan, mounted on the outer race (2a) of a bearing (2), the inner race (2b) of which is keyed onto the support sleeve (3);an electromagnetic friction coupling (10) arranged between the bell member (1a) and movement receiving means (4) suitable for connection to the driving shaft of the vehicle;an electric motor (20) for generating a rotational movement independent of the driving shaft of the vehicle, comprising a stator (21) and a rotor (22);a first rear flange (3a) integral with the sleeve (3) and designed to support an electromagnet (12) of the electromagnetic friction coupling; a second front flange (40) integral with the sleeve (3) and designed to support the stator (21) of the electric motor (20) and a unit (30; 130) for controlling and electronically driving the electric motor (20), arranged in a position radially on the inside of the bell member (1a) for supporting the fan.