Abstract: A fan is provided. The fan has a motor and a first rotating shaft. The motor has a stator assembly, a rotor and a winding. The stator assembly has a stator yoke portion and a stator tooth detachably connected to each other. The winding is wound on the stator tooth. The stator yoke portion has a stator yoke slot and/or a stator projection, adapted to the shape of the stator tooth. The stator tooth axially pass through the stator yoke slot and/or the stator projection to form a stator core. A first fan blade is arranged at an end of the first rotating shaft to rotate the first fan blade when the first rotating shaft rotates.

Abstract: A casing assembly, an electric fan, and a floor scrubber are provided. The casing assembly includes a housing and a cover plate. The housing has an open end. The cover plate has an assembly end connected to the open end. One of the open end and the assembly end is provided with an elastic sealing part, and the other is provided with a fitting part. A first annular projection and a second annular projection are arranged between the elastic sealing part and the fitting part. The first annular projection is located on an inner side of the second annular projection, or vice versa, in the radial direction of the open end. Two ends of the first annular projection abut against the elastic sealing part and the fitting part, respectively. Two ends of the second annular projection abut against the elastic sealing part and the fitting part, respectively.

Abstract: A diffuser, an air supply device and a vacuum cleaning equipment are provided. The diffuser has a base ring member and multiple rows of stationary blades. Each row of stationary blades is disposed on an outer ring wall of the base ring member along an axial direction of the base ring member, and is arranged along a circumferential direction of the base ring member. Opposite sides of the base ring member are respectively an air-inlet side and an air-outlet side. A chord length of each stationary blade in one row is greater than or equal to the chord length of each stationary blade in a next adjacent row. The installation angle of each stationary blade in one row is smaller than or equal to the installation angle of each stationary blade in the next adjacent row.

Abstract: An operation control method and system for a clothing treatment device having a drum and a motor is provided. Load inertia of the drum and a fluctuation parameter of the motor are obtained. Load eccentric mass of the clothing treatment device is obtained based on the load inertia, the fluctuation parameter, and predetermined relationship data that is obtained based on pre-stored load inertia, torque fluctuation and load eccentric mass. The fluctuation parameter can be a torque fluctuation parameter or a rotation speed fluctuation parameter. The clothing treatment device can be controlled according to the load eccentric mass to optimize washing operations. For example, clothing and/or inlet water amount can be timely adjusted according to the calculated load eccentric mass. Thus, the clothing treatment device is prevented from producing significant noise during operations, and the service life of the clothing treatment device can be prolonged.

Abstract: A rotating motor and a fan are provided. A first bearing seat, a second bearing seat and a plurality of support rods of the motor are arranged to form a supporting frame of the motor. Accordingly, the coaxiality between the first bearing seat and the second bearing seat can be ensured. The motor has a rotor. The outer diameter of the permanent magnet of the rotor is disposed to be greater than or equal to the outer diameter of a second bearing of the rotor. The outer diameter of a first bearing of the rotor is disposed to be greater than or equal to the outer diameter of the permanent magnet of the rotor. Accordingly, the entire rotor of the rotating motor can be directly mounted on the supporting frame.

Abstract: Provided are a method for detecting a junction temperature of a switch tube, an electric motor controller, an electric motor control system, and a medium. The electric motor control system includes a three-phase inverter bridge for driving an electric motor to operate. The method includes determining a tube voltage drop and a turn-on current when a lower tube of at least one phase bridge arm in the three-phase inverter bridge is turned on; determining, according to the tube voltage drop and the turn-on current, a turn-on resistance when the lower tube of the at least one phase bridge arm is turned on; and determining, according to the turn-on resistance, a junction temperature of a lower tube of the at least one phase bridge arm.

Abstract: A rotating motor and a fan are provided. In the rotating motor, by arranging a first bearing seat, a second bearing seat, and a plurality of support rods to form the supporting frame, the coaxiality between the first bearing seat and the second bearing seat can be ensured to reduce the accumulated tolerance of assembly. In addition, the motor has a stator having stator teeth. The inner diameter of the inner circular hole of the stator teeth is disposed to be larger than the outer diameter of the second bearing seat.

Abstract: A motor, a power assembly and a power-assisted bicycle are provided. The motor includes a housing, a stator assembly and a busbar assembly. The housing is internally formed with a cavity, and is provided with a wire passing hole. The stator assembly is disposed in the cavity and interference-connected to an inner wall of the housing. The busbar assembly is mounted at one end of the stator assembly in an axial direction, and is provided with a three-phase connection terminal penetrating through the wire passing hole. A resin material is filled between the stator assembly and the housing. The busbar assembly is further provided with a boss base mounted in the wire passing hole in a sealing manner. The three-phase connection terminal is mounted on the boss base.

Abstract: A drive part, a power assembly, and an electric bicycle are provided. The drive part includes a central shaft, a shaft sleeve, a first clutch, a second clutch, and a power input member. The shaft sleeve is sleeved on the central shaft. The shaft sleeve and the central shaft are coaxially provided. The shaft sleeve and the central shaft unidirectionally transmit power by means of the first clutch. The power input member and the shaft sleeve unidirectionally transmit power through the second clutch.

Abstract: A single-resistor measurement method, a motor control method, a controller, and a control system are provided. A direct-current bus current flowing through a single sampling resistor is obtained. When a lower tube of a phase bridge arm is switched on, a switch-on current is determined based on the direct-current bus current, and an on-tube voltage drop is obtained. A switch-on resistance is determined based on the switch-on current and the on-tube voltage drop. A three-phase current outside a current measurement dead zone is determined based on the direct-current bus current. A three-phase current inside the current measurement dead zone is determined based on the on-tube voltage drop and the switch-on resistance. A three-phase feedback current of the motor is determined based on the three-phase current outside the current measurement dead zone and the three-phase current inside the current measurement dead zone.

Abstract: A stator assembly, a motor and a power-assisted bicycle are provided. The stator assembly includes a stator component and a busbar component. The stator component is provided with multiple segmented stator cores and segmented stator windings wound around the segmented stator cores. Each segmented stator winding has two terminals. The busbar component is installed on one end of the stator component along the axial direction. The busbar component is provided with multiple layers of bus bars, which have a plurality of connecting portions. The stator component is also provided with bridge connecting members, which are connected to each of the terminal of at least two segmented stator windings. The connecting portions are connected to the remaining terminals of the stator component in one-to-one correspondence.

Abstract: A fan and a cleaning device are provided. The fan has a housing assembly, a fan cover, a wind wheel, and a first diffuser. The fan cover is mounted on the housing assembly and fits with the housing assembly to form an accommodating cavity. The wind wheel is provided in the accommodating cavity and fits with a side wall of the accommodating cavity to form an air inlet channel. The first diffuser is provided in the accommodating cavity, and has first fan blades and a mounting hub. The mounting hub, the first fan blades and the side wall of the accommodating cavity together provide a first diffusion channel. The air inlet channel is in communication with the first diffusion channel in series.

Abstract: The present application provides a brushless motor and an electrical equipment. The brushless motor includes: a casing, a stator, and a rotor. The stator includes a stator core and a winding. The rotor includes a rotor core and a shaft. Two bearings are sleeved on the shaft at positions corresponding to two ends of the rotor core, respectively. The two bearing brackets are installed at two ends of the casing. The brushless motor further includes a conductive sheet, configured for adjusting a capacitive reactance between the stator core and each of the two bearing brackets. The conductive sheet is attached to an outer circumferential surface of the casing. The conductive sheet and the stator core each at least partially has an area aligned to each other in a radial direction of the casing.

Abstract: An electric blower and a cleaning apparatus are provided. The electric blower includes a shell assembly and a stator assembly. An outer wall of the shell assembly is provided with a cylindrical portion. A stator mounting portion is provided inside the shell assembly. A diffusion channel is formed between the cylindrical portion and the stator mounting portion, and is internally provided with diffusion vanes. The stator assembly is connected to the stator mounting portion and includes a stator core and a winding. The winding is connected to the stator core and protrudes to two axial ends of the stator core. A fluid channel is formed between the stator core and the stator mounting portion, and is in communication with the diffusion channel.

Abstract: An electric fan and a cleaning apparatus are provided. The electric fan includes a fan cover, a movable impeller, a casing assembly, a fixed impeller and an electric motor. The movable impeller is arranged in the fan cover and forms an air intake channel with the fan cover. The movable impeller includes a movable impeller body and air intake blades. The movable impeller body has a maximum outer edge diameter of D1. The casing assembly includes an outer cylinder and a supporting structure. The outer cylinder has an outer diameter of D2. The fixed impeller is connected to the supporting structure. A first diffuser channel is formed between the fixed impeller and the outer cylinder. The fixed impeller incudes a supporting base and a first diffuser blade. The supporting base has an outer diameter of D3. D2 is (1.2-1.6) time of D1. D2 is (1.15-1.6) of D3.

Abstract: An electric blower and a cleaning apparatus are provided. The electric blower includes a shell assembly, a wind cover, a rotary impeller and a diffuser. A stator assembly and a rotor assembly are provided inside the shell assembly. The wind cover is connected to the shell assembly. The rotary impeller is located inside the wind cover, and is connected to a rotating shaft of the rotor assembly. The diffuser is arranged at the end of the shell assembly, which faces the wind cover, and is located between the rotary impeller and the shell assembly. An outer wall of the shell assembly is provided with a cylindrical portion. Multiple circumferentially distributed mounting support legs are provided at the end of the cylindrical portion, which faces away from the wind cover. The mounting legs are used to fit with an assembly structure of a cleaning apparatus.

Abstract: A diffuser assembly, an electric fan and a cleaning device are provided. The diffuser assembly includes an inner housing, an outer housing and diffusion blades. The outer housing and the inner housing are arranged at an interval. A diffusion channel is formed between the outer housing and the inner housing. The diffusion blades are provided in the diffusion channel and arranged in the circumferential direction of the inner housing. In the axial direction of the inner housing, the tail ends of the diffusion blades protrude out of the tail end of the inner housing.

Abstract: A rotor structure, an electric motor structure and a clothing treating device are provided. The rotor structure includes a rotor iron core, a permanent magnet and a magnetic barrier. The rotor iron core includes rotor punching sheets arranged in a stacked manner. Permanent magnet slots are provided in the rotor iron core and the permanent magnet is disposed in the permanent magnet slots. The rotor structure rotates in one direction or two directions in a circumferential direction. In the rotation direction of the rotor structure, the magnetic barrier is provided on at least one side of the permanent magnet slot, and two ends of the magnetic barrier face an outer edge of the permanent magnet and an outer edge of the rotor iron core, respectively. The magnetic barrier is provided on a first punching sheet or a second punching sheet of the rotor punching sheets.

Abstract: A driving system having a hollow shaft, a solid shaft arranged in the hollow shaft, a stator, a rotor connected to the hollow shaft, a clutch mechanism selectively engaged to one of the stator and the rotor, and a speed reduction mechanism having a planetary carrier assembly engaged to the clutch mechanism, and a planetary gear train connected between the solid shaft and the rotor, wherein where the clutch mechanism is engaged to the stator in a transmission manner, the planetary carrier assembly is connected with the stator, and the rotor drives the solid shaft and the hollow shaft to operate at a differential speed, and where the clutch mechanism is engaged to the rotor in the transmission manner, the planetary carrier assembly is connected with the rotor, and the rotor drives the solid shaft and the hollow shaft to operate at a same speed by the planetary gear train.

Abstract: A drum washing machine, and a control method and a control apparatus for same are provided. The control method for the drum washing machine comprises the following steps: acquiring an average starting power of a drum in a starting process of the drum; acquiring a load range to which a current load of the drum belongs according to the average starting power; and setting a weighing protection velocity fluctuation threshold according to the load range to which the current load of the drum belongs. A value of the current load is obtained by using a correspondence between load with different weights and average starting powers. A weighing protection velocity fluctuation threshold is set according to the value of the current load to avoid the collision with the drum and non-dehydration in case of only one piece of clothing.