Abstract: A brushless DC motor including a motor casing, a stator component, and a rotor component. The stator component and the rotor component are respectively arranged inside the motor casing. The rotor component includes a rotor iron core and a rotating shaft supporting the rotor iron core. A shaft extension end of the rotating shaft is arranged with a magnetic ring. One end of the motor casing is provided with an end cover. The center of the outer end surface of the end cover is provided with a groove. The magnetic ring is arranged inside the groove. A Hall induction device is arranged outside the groove and close to the magnetic ring. The motor is reasonably structured, compact, cost-effective, installation friendly, and highly reliable.

Abstract: A blower including a blower volute, a blower motor, and a fan wheel. The blower motor is disposed at the top of the blower volute. The fan wheel is disposed inside the blower volute and connected to the blower motor. The blower volute comprises an air inlet, an air outlet, a cover body, and a bottom cover. A plurality of installation parts is disposed at an outer side of the cover body. The bottom cover and the cover body are embedded with each other and welded together or stuck together. The blower has a simple connection structure, high generality, friendly installation, and low cost.

Abstract: A brushless DC motor, including: a rotating shaft; a rotor assembly; a stator assembly; a casing; a rear cover; and a control box. The rotating shaft is connected together with the rotor assembly. The stator assembly is sleeved outside the rotor assembly. The casing is connected together with the stator assembly. The rear cover includes a rear bearing seat in the middle for receiving a rear bearing. A plurality of support legs protrudes outwards from a wall surface on the outer side of the rear bearing seat, and is supported and installed on a flanged edge folded outwards from an end surface of the casing. One end of the rotating shaft is supported on the rear bearing. The control box is installed on the casing.

Abstract: A motor, including: a motor body, the motor body including two ends; a damping ring, the damping ring including a bottom; a mounting bracket; a locking device; a control box; and a connection housing, the connection housing including two ends, and a sidewall. The damping ring is disposed on each end of the motor body. The bottom of the damping ring is supported by the mounting bracket. The damping ring is fixed on the mounting bracket by the locking device. One end of the connection housing is connected to a bottom of the motor body; the other end of the connection housing is connected to a top of the control box. A plurality of heat dissipation holes is arranged on the sidewall of the connection housing.

Abstract: A rotor assembly, including: a permanent magnet and a rotor core. The rotor core includes an annular ring and a plurality of magnetic induction blocks. The magnetic induction blocks protrude outward from the outer side of the annular ring. A radial recess is formed between every two adjacent magnetic induction blocks for mounting the permanent magnet. An end plate and a base plate are disposed on an end surface and a bottom surface of the rotor core by injection molding, respectively. A first connecting column passes through a through hole of the magnetic induction block and connects the end plate and the base plate. An end surface of the end plate protrudes upward to form the magnetic loop bracket. A magnetic loop is disposed on a magnetic loop bracket.

Abstract: A motor controller, including: a control box including an inner wall; a circuit board; a dissipater; an IGBT module; and an insulating piece. The circuit board is disposed inside the controller box. The dissipater is disposed on the inner wall of the control box. The IGBT module is disposed on the dissipater and is in electric connection with the circuit board. The insulating piece is disposed between the dissipater and the controller and prevents the dissipater from contacting with the control box.

Abstract: A stator for a brushless external-rotor motor. The stator includes a stator core; a winding; and an end insulator. The stator core includes a yoke part and a tooth part which are separated. The tooth part includes a clamping part. The tooth part is formed by overlapping a plurality of silicon-steel sheets. The end insulator is sleeved on the tooth part. The winding is wound on the end insulator. The yoke part is formed by molding permeability magnetic material and includes a mounting hole in a center. A plurality of lug bosses protrudes at intervals on an outer side of the yoke par. A clamping groove is formed between two connected lug bosses. The clamping part of the tooth part is nested in the clamping groove.

Abstract: A fan system in combination with a DC brushless motor. The DC brushless motor includes: a shaft, a base, a stator assembly, a rotor assembly, a control box including a second cavity, and a circuit board. The fan system includes: a blower housing, a wind wheel, a first mounting bracket, and a second mounting bracket. The first mounting bracket is arranged at a first air inlet. The outer side of the first mounting bracket is connected to the upper end surface. The inner side of the first mounting bracket is provided with a first bearing, and the other end of the shaft is disposed on the first bearing. The second mounting bracket is arranged at a second air inlet. The outer side of the second mounting bracket is connected to the lower end surface.

Abstract: A mounting bracket for a motor, including a hoop structure and a plurality of mounting feet. The hoop structure includes a wall surface. The wall surface of the hoop structure includes the mounting feet formed by punching the wall surface of the hoop structure so that a plurality of grooves close to the mounting feet is produced on the wall surface of the hoop structure, and one end of each mounting foot is coupled to the wall surface of the hoop structure. The mounting bracket for a motor of the invention has a simple structure, low cost, and reliable connection and requires less material compared to conventional mounting brackets. The mounting bracket is suitable for different types of motors.

Abstract: A method for controlling air volume output by a motor. The method includes: 1) establishing functional relation formulas for air volume in a low torque interval and a high torque interval; 2) inputting a target air volume into a microprocessor control unit; 3) starting a motor under a torque to enable the motor to reach a steady state; 4) acquiring an adjustment coefficient under the torque, and calculating the air volume; 5) comparing the target air volume with the calculated air volume; 6) re-recording a steady rotational speed after the motor reaches a new steady state under an increased or reduced torque, and recalculating the air volume in the new steady state; and 7) repeating steps 5) and 6) to adjust the torque until the calculated air volume is equal or equivalent to the target air volume.

Abstract: A DC brushless motor having an external rotor, the motor including: a shaft, a stator assembly, an end cover, a housing, and a plurality of permanent magnets. The end cover includes a bearing. The housing includes: an inner wall, and an end. The shaft is connected with the stator assembly. The stator assembly is arranged inside the housing. The permanent magnets are positioned outside the stator assembly on the inner wall of the housing. The end cover is disposed on the end of the housing. The shaft is disposed on the bearing of the end cover.

Abstract: A variable speed fan motor, including: a variable speed motor and a motor controller. The motor controller includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply unit. The gear detection circuit includes a plurality of Hall current sensing units. Each second power input line is connected with a first input end of each of the Hall current sensing units. Second input ends of the Hall current sensing units are connected in parallel, and are connected with a second AC input end of the power supply unit. An output end of the Hall current sensing unit is connected with an input end of the microprocessor. The microprocessor selects operating parameters according to an energized signal of the second power input lines and controls the variable speed motor to operate in accordance with the selected operating parameters.

Abstract: A motor casing, including a hollow motor casing body. The wall of the motor casing body comprises a plurality of brackets and a plurality of grooves which are formed simultaneously by punching the wall of the motor casing body. The plurality of grooves is disposed one close to one of the brackets. One end of each bracket is coupled to the wall of the motor casing body. The motor casing has a simple structure, low cost, and reliable connection and requires less materials compared to conventional motor casings.

Abstract: A brushless DC motor, including: a motor body; a damping ring; a mounting bracket; a locking device; and a controller. The controller includes: a control box, and a circuit board. Two sides of the mounting bracket are convex upward to form two supporting plates, respectively. Each supporting plate is provided with a recess. The damping ring is disposed on each end of the motor body. A bottom of the damping ring matches with the recess of the mounting bracket. The damping ring is fixed on the mounting bracket by the locking device. The circuit board is arranged inside the control box. The control box is disposed on the motor body.

Abstract: A fan motor, including: a variable speed motor and a motor controller. The motor controller includes: a microprocessor, an inverter unit, a gear detection unit, and a power supply unit. The power supply unit supplies power for each circuit. The gear detection unit is connected to a plurality of power input lines. Each power input line receives AC power from an AC power supply. The gear detection unit includes: a plurality of voltage detection circuits, and a plurality of thermal resistors. Each power input line is connected to a thermal resistor in series and matches up with a voltage detection circuit. Each voltage detection circuit includes a thermo-sensitive resistor that is bound to the corresponding thermal resistor via a thermal conductive element. The thermo-sensitive resistor detects a temperature signal of the thermal resistor and adjusts the voltage of the output end of the voltage detection circuit.

Abstract: A locking device including a hoop, the hoop curling up to form an axial mounting hole in the middle. An upper convex block, a lower convex block, a middle aperture, a left aperture, a right aperture, an upper convex ear, a lower convex ear, an upper guiding inclined plane, and a lower guiding inclined plane are disposed in the device. The upper convex block and the lower convex block move axially to narrow the middle aperture, the upper guiding inclined plane and the lower guiding inclined plane contact with each other to make the upper convex block and the lower convex block to move circumferentially to narrow both the left aperture and the right aperture and enable the hoop to tightly hold objects inside the axial mounting hole. The locking device has a simple structure, low cost, robust connecting structure, convenient and efficient assembly and disassembly processes.

Abstract: A connecting structure, including: a volute including an air inlet and an air outlet; and a conversion interface. A connecting part is disposed on an outer side of the air outlet. The connecting part includes: a lower plate; a lower lug protruding outward from each end of the lower plate; and an upper flange disposed above the lower plate. The conversion interface includes a sleeve. An upper plate protrudes from a rear part of the sleeve. Two upper lugs protrude outward from two ends of the upper plate, respectively. A lower flange is disposed on the rear part of the sleeve beneath the upper plate. The upper plate is disposed on the upper flange. The lower flange is disposed on a curved convex block that protrudes upward from an outer edge of the lower plate. The upper lug is disposed on the lower lug.

Abstract: A rotor assembly, including: a permanent magnet, a rotor core, and a magnetic loop. The rotor core includes an annular ring including a central axial bore, and a plurality of magnetic induction blocks protruding outward from an outer side of the annular ring. A through hole is arranged on the magnetic induction block. A radial recess is formed between every two adjacent magnetic induction blocks for mounting the permanent magnet. An end plate and a base plate are disposed on an end surface and a bottom surface of the rotor core by injection molding, respectively. A connecting column passes through the through hole and connects the end plate and the base plate as a whole body. An end surface of the end plate protrudes upward to form a magnetic loop bracket. The magnetic loop is disposed on the magnetic loop bracket.