Abstract: A blower, including a scroll casing, a fan impeller, a motor, and a pressure measuring connector. The scroll casing includes a chamber, an air inlet, and an air outlet. The air inlet and the air outlet communicate with the chamber. The motor is disposed on the scroll casing. A drive end of the motor is inserted into the chamber and is connected to the fan impeller. The pressure measuring connector is disposed on the scroll casing. A channel is disposed in the pressure measuring connection, and the channel communicates with the chamber. The channel includes a first subchannel and a second subchannel. The first subchannel communicates with the second subchannel, and an inner diameter of the first subchannel is larger than an inner diameter of the second subchannel.

Abstract: A plastic-packaged stator includes a sleeve base, a plurality of tooth assemblies, and a plastic-packaged body. Each tooth assembly includes an iron core including a plurality of laminated silicon steel sheets, a terminal insulator, and coil windings. The terminal insulator is disposed on one end of the iron core. The coil windings are coiled on the terminal insulator. A plurality of lug bosses is circumferentially disposed at intervals on the outer wall surface of the sleeve base. An inner end of the iron core includes slots. The tooth assemblies are circumferentially disposed on the outer wall surface of the sleeve base. The lug bosses are embedded in the slots. The plastic-packaged body integrates the sleeve base with the tooth assemblies.

Abstract: A rotor, including: a rotor core and a plurality of permanent magnets. The rotor core includes an axle hole, four slots equally distributed at the outer side of the axle hole, first magnetic isolating slots, and second magnetic isolating slots. The first magnetic isolating slots are disposed at each side of each of two adjacent slots, and the second magnetic isolating slots are disposed at each side of each of the other two adjacent slots. Both the first magnetic isolating slots and the second magnetic isolating slots communicate with corresponding slots. Two lines connecting a center of the axle hole and two first magnetic isolating slots respectively at both sides of one slot form a first angle at the center, and two lines connecting the center of the axle hole and two second magnetic isolating slots respectively at both sides of one slot form a second angle at the center.

Abstract: A wire terminal joint of a motor stator winding, including: an external power wire, the external power wire including a core extending from one end thereof; a plurality of aluminum-enameled wires, each aluminum-enameled wire including an exposed aluminum wire at one end thereof; a first sleeve; and a second sleeve. The aluminum-enameled wires are disposed on the motor stator winding. The core extending from one end of the external power wire is interwound with and electrically connected to the exposed aluminum wire. The first sleeve has a larger diameter than the second sleeve. The second sleeve is sleeved on the core and the exposed aluminum wire. One end of the first sleeve is sleeved on external surfaces of the external power wire and the exposed aluminum wire, and another end of the first sleeve is sleeved on an external surface of the second sleeve.

Abstract: A method for controlling a three-phase brushless DC motor including a single hall sensor, the method including: A) measuring a deviation angle ? of a mounting position of the single hall sensor and storing; B) starting the motor: outputting six-path PWM signals by the microprocessor to control the operation of the inverter and allowing the single hall sensor to continuously and stably measure a position signal; C) obtaining a rotating angular velocity ?=360°/T in the last 360° electric angle cycle by the microprocessor; D) calculating a real-time position angle ?=?t+? of a present 360° electric angle cycle by the microprocessor; and E) outputting the six-path PWM signals by the microprocessor to control the operation of the inverter so as to simultaneously energize the three-phase winding (U, V, and W); and switching a current direction of each winding.

Abstract: A motor, including at least a stator, including at least a stator core and a coil winding, and a rotor, including at least a rotor core and multiple permanent magnets. Multiple wire receiving grooves are disposed on the stator core. The permanent magnets are disposed on the rotor core. The ratio between the number of teeth of the wire receiving grooves and that of the permanent magnets is 3:2. Every two or three of the permanent magnets form a group of permanent magnets. A gap is disposed between adjacent groups of permanent magnets. The groups of permanent magnets are circumferentially distributed. Magnetic polarities of the permanent magnet are alternatively distributed in a N phase and a S phase. Difference in an electric angle between centers of polarities of adjacent permanent magnets in one group is between 150 degrees and 170 degrees.

Abstract: A motor including a stator assembly and a rotor assembly. The stator assembly includes a stator core and a winding; the stator core includes a yoke and a plurality of teeth protruding inwards from the yoke; between two adjacent teeth formed is a winding slot; the winding is arranged in the winding slot, and winded on the teeth. The rotor assembly includes a rotor core and a permanent magnet. The rotor core includes an annular ring having a central axial bore and a plurality of magnetic induction blocks protruding outwards from an outer side of the annular ring. Between two adjacent magnetic induction blocks formed is a radial recess for mounting the permanent magnet. The magnetic induction blocks at both sides of an opening of the radial recess protrude with a hook block. The thickness of the rotor core is larger than that of the stator core.

Abstract: A permanent magnet rotor including a rotor core and permanent magnets. The rotor core includes a plurality of magnetic induction blocks. A plurality of radial recesses are formed between every two adjacent magnetic induction blocks for mounting the permanent magnets. The magnetic induction blocks protrude at both sides of the opening of the radial recesses to form hook blocks. The permanent magnets include a first permanent magnet and a second permanent magnet. The first permanent magnet includes a north pole strong magnetic surface and a south pole weak magnetic surface. The second permanent magnet includes a north pole weak magnetic surface and a south pole strong magnetic surface. The first permanent magnet and the second permanent magnet are alternately disposed in the radial recesses.

Abstract: A permanent magnet rotor for a motor, the permanent magnet rotor including an iron core and a permanent magnet. The iron core includes an annular ring having a central axial bore and a plurality of magnetic induction blocks protruding outward from an outer side of the annular ring. Between two adjacent magnetic induction blocks form a radial recess for mounting the permanent magnets. The magnetic induction blocks at both sides of an opening of the radial recess protrude with a hook block. The section of an outer side surface of the magnetic induction blocks is a circular-arc line and the outer side surface employs a point with a distance deviating from the center of the central axial bore as a center of circle.

Abstract: A heat-dissipation structure for a motor controller. The heat-dissipation structure includes a control box, a circuit board, a plurality of radiators, and IGBT modules. The circuit board is installed in the control box. Each radiator includes a side plate and a heat dissipation block protruding from the side plate. The side plate is attached to an inner wall surface of the control box. The IGBT modules are installed on the heat dissipation block, and the pin terminals protruding from the IGBT modules are in electric or electronic connection with the circuit board.

Abstract: A plastic-package motor, including: a rotating shaft, a rotor assembly, a plastic-package stator, a front end cover, a rear end cover, an injection-molding end plate, and a conducting strip. The rotating shaft and the rotor assembly are installed and connected together. The plastic-package stator is sleeved outside the rotor assembly. The front end cover is injection-molded on the injection-molding end plate at the bottom of the plastic-package stator. The injection-molding end plate is covered outside the front end cover. The rear end cover is installed at the other end of the plastic-package stator, and two ends of the rotating shaft are supported on a bearing of the front end cover and a bearing of the rear end cover, respectively. One end of the conducting strip is electrically connected with the front end cover.

Abstract: A heat exchanger for an indoor unit of an air conditioner, including at least a housing (1) having an air inlet (15) and an air outlet (16), a cooling coil (3), and a centrifugal blower (4) having an air exit (17), a volute housing (5), a motor (6) and a centrifugal wind wheel (7). The cooling coil (3) and the centrifugal blower (4) are disposed in the housing (1). The air inlet (15) and the air outlet (16) are disposed on both ends of the housing (1). The cooling coil (3) is disposed at the back of the air inlet (15). The centrifugal blower (4) is disposed at the back of the cooling coil (3). The air exit (17) of the centrifugal blower (4) is connected to the air outlet (16) of the housing (1). The motor (6) is an external rotor motor and fits in the center of a cavity in the centrifugal wind wheel (7). A left air intake (11) and a right air intake (12) are formed on both sides of the volute housing (5). The heat exchanger features large air input and air output, and high blowing efficiency.

Abstract: An assembly structure, including an end cover and a shell. The end cover includes a rabbet, a side wall, and an end surface. The shell includes an end part. A plurality of clamping grooves is arranged at a bottom of the rabbet and on the side wall of the end cover. Through holes are arranged above the clamping grooves and on the end surface of the end cover and communicate with the clamping grooves. A plurality of notch grooves is arranged at the end part of the shell. Clamping strips are arranged above the notch grooves and at the end part of the shell. The end cover is installed at the end part of the shell. The clamping strips are embedded in the clamping grooves for allowing the shell and the end cover to be connected together.

Abstract: A variable speed fan motor, including a variable speed motor body and a motor controller. The motor controller includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply. The gear detection circuit includes a plurality of current sensing units. Only one of the power input lines is in an energized state, and remaining power input lines are in a deenergized state. Each power input line is connected to one current sensing unit. An output end of the current sensing unit is connected to an input end of the microprocessor. The microprocessor selects operating parameters of the motor according to a detected signal of energization state of each power input line. The microprocessor is connected to the series communication unit. The microprocessor communicates with an external device via the series communication unit.

Abstract: A protection circuit for brushed DC motors connected between an AC power supply input and a rectifier circuit, including a power supply line, a power supply circuit, an AC detection circuit, a rectifier/filter voltage-stabilizing circuit, a microprocessor, a drive circuit, and a switching unit. The switching unit is connected to the power supply line in series. An input terminal of the power supply circuit is connected with the AC power supply input. The AC detection circuit receives current signals from the power supply line. The current signals are processed by the rectifier/filter voltage-stabilizing circuit and sent to the microprocessor. An output terminal of the microprocessor is connected to an input terminal of the drive circuit, and the drive circuit controls the switching unit to connect or disconnect the power supply circuit.

Abstract: A connecting structure for use between a wind wheel of a blower and a motor shaft in combination with the wind wheel (1) and the connecting structure including a shaft sleeve (3). The wind wheel (1) includes a bottom plate (11), and the bottom plate (11) is convex to form a sleeve cover (12). A bottom surface and a side surface of the shaft sleeve (3) is wrapped by the sleeve cover (12). A thread (21) is arranged on an end of the shaft (2). A shaft step (22) is arranged on the shaft (2) at an inner side of the thread (21). The thread (21) arranged on the end of the shaft (2) is inserted into a threaded hole (31) arranged inside the shaft sleeve (3). The shaft step (22) is attached to a top surface of the shaft sleeve.

Abstract: A motor controller, including: a control box (1), the control box (1) including a bottom, the bottom including a plurality of first bosses (11); a control panel (2); a plurality of IGBT modules (3); and a heat dissipation boss (12), the heat dissipation boss (12) including an end surface. The control panel (2) is disposed and fixed on the first bosses (11) by screws. The IGBT modules (3) are disposed on the control panel (2). The heat dissipation boss (12) is disposed on the bottom of the control box (1) outside the control panel (2). The IGBT modules (3) are attached to and fixed on the end surface of the heat dissipation boss (12) by a locking device.

Abstract: A motor including a housing, a stator assembly, a rotor assembly, a controller, and a top end cover. The housing includes a cavity. The stator assembly includes a stator core and a stator winding and is housed in the cavity. The top end cover is disposed on the top of the housing. The rotor assembly includes a permanent magnet, a revolving shaft, and a rotor support. A bearing support extends inward from the center of a top end face of the top end cover, with a bearing chamber respectively provided on both ends thereof. The revolving shaft is disposed into and supports the bearing. A connection kit extends from the edge of the rotor support and outside the bearing support. The permanent magnet is disposed on the connection kit. The motor is characterized by simple and compact structure, lower cost, easy thermal dissipation, smaller axial dimension, and convenient assembly.

Abstract: A daughter circuit board of an electronically commutated motor for interface signal conversion, including circuit units integrated on the daughter circuit board and five ports for communicating with a control system of a user terminal. The five ports include: a R/T port, a Vcc port, a Common port, a Vsp port, and an FG port.

Abstract: A rotor assembly including a rotating shaft, a rotor core, a permanent magnet, a magnetic ring support, and a magnetic ring. The permanent magnet is mounted on the outer side surface of the rotor core. The magnetic ring is nested on the magnetic ring support, and the magnetic ring support and the rotor core are made as a whole by injection molding. The rotor assembly is relatively simple to produce, low in cost, and features improved efficiency.