A single phase permanent magnet motor includes a stator and a rotor rotatable relative to the stator. The stator includes a stator core and a winding wound around the stator core. The rotor includes a rotor core and a plurality of permanent magnetic poles. The stator core includes at least one first stator core lamination and at least one second stator core lamination stacked with the first stator core lamination. Inner structures of the first stator core lamination and the second stator core lamination are different. This structure reduces motor's vibration and noise, avoids possible startup dead point and improves the motor startup reliability.

A single phase permanent magnet motor and a method for making the same are provided. The method includes the steps of: configuring a stator core, wherein the stator core comprises a first ring portion, tooth bodies, and a pole shoe extending from each tooth body, a slot opening is defined between each two adjacent pole shoes, at least one pole shoe includes a main portion, a connecting portion and an easily bendable tip, the easily bendable tip is bent relative to the main portion about the connecting portion; winding a stator winding around the stator core; and bending the easily bendable tip about the connecting portion to narrow the slot opening. The present invention can change the size of the slot opening, thus more rapidly finishing the winding of the stator winding and enhancing the efficiency of the motor fabrication.

A single phase permanent magnet motor and a method for making the same are provided. The method includes the steps of: configuring a stator core, wherein the stator core comprises a first ring portion, tooth bodies, and a pole shoe extending from each tooth body, a slot opening is defined between each two adjacent pole shoes, at least one pole shoe includes a main portion, a connecting portion and an easily bendable tip, the easily bendable tip is bent relative to the main portion about the connecting portion; winding a stator winding around the stator core; and bending the easily bendable tip about the connecting portion to narrow the slot opening. The present invention can change the size of the slot opening, thus more rapidly finishing the winding of the stator winding and enhancing the efficiency of the motor fabrication.

A single phase motor and a hair dryer are provided. The motor includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, and two pole shoes extending from a distal end of each tooth. A winding slot is formed between each two adjacent teeth. A slot opening is disposed between the pole shoes of the adjacent teeth, and is offset from one of the two adjacent teeth. The air supplying unit includes the single phase motor and an impeller. The startup angle and cogging torque of the motor are adjustable by adjusting the position/width of the slot opening, without the need of additional positioning slots or positioning holes defined at the pole shoes, which makes the motor structure simple.

A single phase motor and a hair dryer are provided. The motor includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, and two pole shoes extending from a distal end of each tooth. A winding slot is formed between each two adjacent teeth. A slot opening is disposed between the pole shoes of the adjacent teeth, and is offset from one of the two adjacent teeth. The air supplying unit includes the single phase motor and an impeller. The startup angle and cogging torque of the motor are adjustable by adjusting the position/width of the slot opening, without the need of additional positioning slots or positioning holes defined at the pole shoes, which makes the motor structure simple.

A single phase permanent magnet motor includes a stator core, windings wound around the stator core, and a permanent magnet rotor rotatable relative to the stator core. The stator core includes an end portion and a pole arm extending from the end portion. The pole arm includes two connecting arms spaced from each other and pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface has a first axial portion continuous along a circumference of the arc pole surface and a second axial portion being discontinuous along a circumferential direction of the arc pole surface.

A single phase permanent magnet motor includes a stator core, windings wound around the stator core, and a permanent magnet rotor rotatable relative to the stator core. The stator core includes an end portion and a pole arm extending from the end portion. The pole arm includes two connecting arms spaced from each other and pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface has a first axial portion continuous along a circumference of the arc pole surface and a second axial portion being discontinuous along a circumferential direction of the arc pole surface.

A single phase permanent magnet motor includes a stator. The stator includes a stator core and windings. The stator core includes a ring portion, tooth bodies extending radially from the ring portion, and a pole shoe extending from a distal end to two circumferential sides of each tooth body. Each pole shoe defines a positioning slot. A center of each positioning slot is offset from a center of symmetry of one adjacent tooth body so that a torque fluctuation of an output torque of the single phase permanent magnet motor during operation is less than 50%. As a result, the motor vibration and noise are small.

A fluid generating device and an electric apparatus utilizing the fluid generating device are provided. The fluid generating device includes a motor and an impeller driven by the motor. The motor is a single phase direct current brushless motor which includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, a pole shoe formed at the tooth. Slot openings are formed between the pole shoes. The rotor is received in a receiving chamber defined by the pole shoes. Inner surfaces of the pole shoes and the rotor form therebetween a substantially even air gap. The presence of even air gap can reduce the cogging torque of the motor, thus reducing the startup current and noise of the motor.

A fluid generating device and an electric apparatus utilizing the fluid generating device are provided. The fluid generating device includes a motor and an impeller driven by the motor. The motor is a single phase direct current brushless motor which includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, a pole shoe formed at the tooth. Slot openings are formed between the pole shoes. The rotor is received in a receiving chamber defined by the pole shoes. Inner surfaces of the pole shoes and the rotor form therebetween a substantially even air gap. The presence of even air gap can reduce the cogging torque of the motor, thus reducing the startup current and noise of the motor.