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 metaverse application generates a first abuse score for the audio stream associated with a first user based on rules that analyze user signals, wherein the user signals include one or more selected from the group of one or more second users muting the first user, a history of past moderation actions associated with the first user, one or more third users blocking the first user, and combinations thereof. The metaverse application includes an audio-classifier model that obtains a second abuse score for an audio stream associated with the first user, wherein the audio stream is provided as input to the audio-classifier model. The metaverse application determines that the first user is committing abuse based on one or more selected from the group of the first abuse score, the second abuse score, and combinations thereof exceeding a threshold score value. Responsive to determining that the first user is committing abuse, the metaverse application performs a remedial action.

Abstract: A motor and a vehicle are provided. The motor has a housing, a stator, a first end cove, a second end cover, a first oil injection ring, a rotor, a first end plate, and a second end plate. The rotor includes a rotor core, a rotor oil path formed in the rotor core, a rotor magnet steel, a rotation shaft, and a rotation shaft oil path formed in the rotation shaft. A first oil groove is defined on an inner side surface of the first end plate opposite to the rotor core, and is in communication with the rotation shaft oil path and the rotor oil path, respectively. A first end plate oil outlet is defined in an outer side surface of the first end plate and communicates the first oil groove with an inner cavity of the housing.

Abstract: Disclosed is a three-axis Hall angle sensor with an accuracy of 0.3°. The sensor is mainly designed by means of finite element software and COMSOL Multiphysics. The present specification will be mainly performed in three steps. In the first step, a cross-shape horizontal Hall element for measuring the magnetic field in the vertical direction, that is, the direction z, is studied. The second section mainly studies a three-contact four-Hall vertical element for measuring the magnetic field in the directions x, y. The third part is to design the angle sensor. Compared with the horizontal Hall element, the vertical Hall element has a relatively large offset, therefore, four vertical Hall elements are used to measure the magnetic field in the horizontal direction, and two complementary vertical structures are used to eliminate the error when the magnetic field in the same horizontal direction is measured.

Abstract: Disclosed is a method for the synthesis of crystalline -graphyne which exhibits an ABC stacking pattern in the crystal structure. Alkyne metathesis is used to reversibly cleave and reform bonds between sp-hybridized carbon atoms to create an sp and sp2-hybridized carbon network. An exemplary method includes providing a first hexa-alkynyl substituted benzene co-monomer (e.g., HPB) and a second hexa-alkynyl substituted co-monomer (e.g., HHEB), and undergoing an alkyne metathesis reaction in the presence of a catalyst. During the reaction, small short chain alkyne byproducts can be removed, to drive the reaction toward the formation of the -graphyne polymer product, while the larger alkyne byproducts can facilitate the self-correction process that will minimize the structural defects in the resulting -graphyne.

Abstract: An outdoor unit for an air conditioner, and an air conditioner are provided. The outdoor unit has a housing and a draught fan. The housing is provided with a first air exchange port and a second air exchange port. The draught fan is arranged in the housing and located between the first air exchange port and the second air exchange port. The draught fan has an electric motor, a first fan, and a second fan. The electric motor has two rotors which rotate independently of each other, and a first output shaft and a second output shaft connected to the two rotors respectively. The first output shaft and the second output shaft are respectively fixedly connected to the first fan and the second fan for driving the first fan and the second fan to rotate independently of each other.

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: An electrical fan and an electric appliance are provided. The fans has a driving structure, an impeller, a wind hood and a diffuser. The impeller has a cover plate installed on the driving structure. The wind hood is covered on the impeller and has an air inlet and an air outlet communicated to each other. The diffuser is located at one end of the impeller facing the air outlet. The diffuser has a first protrusion connected to the driving structure. The first protrusion protrudes in a direction of the wind hood. The diameter of an end of the first protrusion adjacent the cover plate is smaller than the diameter of an end away from the cover plate. The diffuser has an inner ring arm connected to the first protrusion and an outer ring arm sleeved outside the inner ring arm.

Abstract: A compound dispersant which is composed of distilled water, a nonionic surfactant, an anionic surfactant and a wetting agent. The nonionic surfactant is a Tween compound, the anionic surfactant is a hydrocarbyl sulfonate salt compound, and the wetting agent is an amide compound. The compound dispersant can block or slow down agglomeration of graphene in a dispersion solution. In addition, disclosed are a preparation method of the compound dispersant, which is used for preparing the compound dispersant and is simple to operate, a mixed electroplating solution containing the compound dispersant, in which the graphene is dispersed uniformly and stably, and a preparation method of the mixed electroplating solution, in which graphene is distributed uniformly and stably.

Abstract: A compound dispersant which is composed of distilled water, a nonionic surfactant, an anionic surfactant and a wetting agent. The nonionic surfactant is a Tween compound, and the anionic surfactant is hydrocarbyl sulfate salts. The compound dispersant can block or slow down agglomeration of graphene in a dispersion solution. Also disclosed are a preparation method of the compound dispersant, which is simple to operate, a mixed electroplating solution containing the compound dispersant, in which the graphene is dispersed uniformly and stably, and a preparation method of the mixed electroplating solution, in which graphene is distributed uniformly and stably.

Abstract: A compound dispersant which is composed of distilled water, a nonionic surfactant, an anionic surfactant and a wetting agent, wherein the nonionic surfactant is a Tween compound, and the wetting agent includes a hydrocarbyl sulfate salt compound and a hydrocarbyl sulfonate salt compound. The compound dispersant can block or slow down agglomeration of graphene in a dispersion solution. Also disclosed are preparation method of the compound dispersant, which is simple to operate and produces a compound dispersant that can effectively block or slow down the agglomeration of graphene in the dispersion solution, a mixed electroplating solution including the compound dispersant, in which the graphene is dispersed uniformly and stably, and a preparation method of the mixed electroplating solution, which is simple to operate, wherein graphene is distributed uniformly and stably.

Abstract: A motor and a fan are provided. The motor has a stator assembly, two mutually independent rotor assemblies, and two mutually independent rotating shaft assemblies. The stator assembly has a stator core and two groups of mutually independent windings. The rotor assemblies are oppositely and coaxially arranged on two axial sides of the stator assembly and form an axial air gap with the stator assembly. The two rotor assemblies are configured to rotate independently. The two mutually independent rotating shaft assemblies are coaxially connected with the two rotor assemblies, respectively, and protrude in a direction of the same side away from the stator core along the axial direction of the motor.

Abstract: A method for synthesizing polyhydroxyurethane polymers by using cyclic carbonates, amines, and base catalysts. A method for synthesizing polyhydroxyurethane (PHU) and polyimine (PI) hybrid polymer (PHU-PI) by using a multivalent cyclic carbonate monomer, a multivalent aldehyde monomer, and a multivalent amine monomer. A method for synthesizing a polyhydroxyurethane (PHU), polyimine (PI), and epoxy resin hybrid polymer (PHU-PI-epoxy) by using a multivalent cyclic carbonate monomer, a multivalent aldehyde monomer, a multivalent epoxide monomer, and a multivalent amine monomer. Cyclic carbonate monomers may be obtained from epoxides through the insertion of carbon dioxide. A polyhydroxyurethane may be reprocessed multiple times with minimal properties decrease with or without the addition of a catalyst. A polyhydroxyurethane may be combined with pristine or recycled reinforcing fibers to form a fiber-reinforced composite having specific desired material properties.

Abstract: An electric motor and a vehicle are provided. The electric motor includes a metal member, a rotor core, a shaft, a conductive bearing, and an elastic conductive member. The metal member is grounded. The rotor core is disposed on one side of the metal member, and includes a shaft hole. The shaft is connected to the rotor core, and penetrates through the shaft hole. The conductive bearing is disposed on the shaft in a sleeving manner. At least a portion of the elastic conductive member is disposed between the conductive bearing and the metal member. The elastic conductive member generates compression force through elastic deformation thereof, to be in tight contact with the conductive bearing.

Abstract: A drive motor, a drive system and a vehicle are provided. The drive motor has a motor housing and a stator core provided in the motor housing. The motor housing has a fluid inlet and a fluid outlet. A cut edge is disposed on an outer peripheral wall of the stator core. The cut edge extends in an axial direction of the stator core. A cooling fluid flow path is formed by a space between the cut edge and an inner peripheral wall of the motor housing. The fluid inlet and the fluid outlet are in communication with the cooling fluid flow path.

Abstract: A motor and a vehicle are provided. The motor has a housing, a stator, a first end cove, a second end cover, a first oil injection ring, a rotor, a first end plate, and a second end plate. The rotor includes a rotor core, a rotor oil path formed in the rotor core, a rotor magnet steel, a rotation shaft, and a rotation shaft oil path formed in the rotation shaft. A first oil groove is defined on an inner side surface of the first end plate opposite to the rotor core, and is in communication with the rotation shaft oil path and the rotor oil path, respectively. A first end plate oil outlet is defined in an outer side surface of the first end plate and communicates the first oil groove with an inner cavity of the housing.

Abstract: The present disclosure provides a bearing assembly, a rotor assembly and a draught fan. The bearing assembly has a shaft sleeve and a shaft extending through the shaft sleeve. An inner wall of the shaft sleeve is provided with two grooves in a circumferential direction. The shaft is provided with two channels corresponding to the two grooves respectively. The channels and the grooves form two raceways. Multiple rolling bodies are disposed between the shaft and the shaft sleeve and movable in the raceways. The shaft sleeve has an outer diameter of 13 mm, and a portion of the shaft extending within the shaft sleeve has a diameter of 5 mm.

Abstract: An electrical fan and an electric appliance are provided. The fans has a driving structure, an impeller, a wind hood and a diffuser. The impeller has a cover plate installed on the driving structure. The wind hood is covered on the impeller and has an air inlet and an air outlet communicated to each other. The diffuser is located at one end of the impeller facing the air outlet. The diffuser has a first protrusion connected to the driving structure. The first protrusion protrudes in a direction of the wind hood. The diameter of an end of the first protrusion adjacent the cover plate is smaller than the diameter of an end away from the cover plate. The diffuser has an inner ring arm connected to the first protrusion and an outer ring arm sleeved outside the inner ring arm.

Abstract: A stator assembly and a motor are provided. The stator assembly has a stator core and a winding. The stator core has a stator yoke portion, at least one stator tooth, and at least one winding. The stator tooth is disposed along the axial direction of the stator yoke portion. The stator tooth is detachably connected to the stator yoke portion. The winding is wound on the stator tooth. The stator yoke portion is provided with a stator yoke groove and/or a stator projection adapted to the shape of the stator tooth.

Abstract: An outdoor unit for an air conditioner, and an air conditioner are provided. The outdoor unit has a housing and a draught fan. The housing is provided with a first air exchange port and a second air exchange port. The draught fan is arranged in the housing and located between the first air exchange port and the second air exchange port. The draught fan has an electric motor, a first fan, and a second fan. The electric motor has two rotors which rotate independently of each other, and a first output shaft and a second output shaft connected to the two rotors respectively. The first output shaft and the second output shaft are respectively fixedly connected to the first fan and the second fan for driving the first fan and the second fan to rotate independently of each other.