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 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 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 voltage conversion device for a motor in combination with the motor. The motor includes a stator winding. The winding leads are led out from the stator winding. The conversion device includes a socket and a plug. Part of the winding leads are in electric connection with the socket. The rest of the winding leads is in electric connection with the plug. The plug is inserted into the socket for changing the connection between the polyphase windings.

Abstract: An induced draught fan, including: a motor, the motor including a shaft; a volute; and a wind wheel. The volute is provided with an air intake and an air outlet. The wind wheel is arranged inside the volute. The top of the volute is provided with a through-hole. The shaft of the motor passes through the through-hole and is connected to the wind wheel. A seal ring is arranged on the volute corresponding to the through-hole. An outer side of the seal ring is provided with an annular groove. The volute is embedded in the annular groove. The middle of the seal ring is provided with a center hole. The middle of the side wall of the center hole is provided with a ring-like convex edge. The shaft passes through the center hole and contacts with the ring-like convex edge.

Abstract: A volute mechanism for a blower, the mechanism including: a volute (1), the volute (1) including a cavity (11) and a first through hole (12); and a manometric interface (2), the manometric interface (2) including a second through hole (21) inside. The cavity (11) is arranged inside the volute (1) for accommodating a wheel. The manometric interface (2) is disposed in the first through hole (12) and is movable along an axial direction of the first through hole (12). The second through hole (21) and the cavity (11) are in communication.

Abstract: A motor controller comprising multiple types of interfaces assigned automatically, including a mother circuit board and a daughter circuit board. The daughter circuit board is plugged into the mother circuit board to form electric connection. The mother circuit board has a power circuit, a microprocessor unit of the mother circuit board, a rotor position sensing unit, a power inverter unit, and an analog sensing unit. The daughter circuit board includes a signal interface circuit. The mother circuit board further has a serial digital communication unit. The signal interface circuit includes a microprocessor of the daughter circuit board, and a serial digital communication unit of the daughter circuit board. The microprocessor unit of the mother circuit board communicates with the microprocessor of the daughter circuit board via the serial digital communication unit of the mother circuit board and the serial digital communication unit of the daughter circuit board.