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US 2021/0003136 A1Published application
Micro fan
AssigneeDelta Electronics, Inc.
InventorsChao-Wen LU, Chih-Wei CHAN, Che-Wei LEE
Life of this patent
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Abstract
A micro fan is provided. The micro fan includes a rotor and a stator. The stator includes an axial induced coil unit and a circuit board. The axial induced coil unit is made by twining a coil in an axial direction for at least two layers and in a radial direction for at least two layers.
Claims16
A micro fan, comprising:
- a rotor;
- and
- a stator, comprising an axial induced coil unit and a circuit board, wherein the axial induced coil unit is made by twining a coil in an axial direction for at least two layers and in a radial direction for at least two layers,
- wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,
- wherein the axial induced coil unit generate an magnetic force to rotate the rotor,
- wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.
3 more elements
A micro fan, comprising:
- a rotor;
- and
- a stator, comprising an axial induced coil unit and a circuit board, wherein the axial induced coil unit is made by twining a coil into a flat-shaped bundle,
- wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,
- wherein the axial induced coil unit generate an magnetic force to rotate the rotor,
- wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.
3 more elements
A micro fan, comprising:
- a rotor;
- and
- a stator, comprising an axial induced coil unit and a circuit board, wherein the stator is produced by the following steps:
- providing the axial induced coil unit;
- directly mounting the axial induced coil unit on the circuit board by surface mount technology, and the axial induced coil unit is a magnetic pole unit of the stator,
- wherein an end contact of the axial induced coil unit, which is connected to one end of the coil, is cut from a lead frame,
- wherein the axial induced coil unit generate an magnetic force to rotate the rotor,
- wherein the stator has a stator coil magnetic pole, and the stator coil magnetic pole provides a magnetic attraction force and a magnetic repulsion force alternately toward rotor magnets of the rotor to rotate the rotor.
5 more elements
Dependencies are inferred from the claim text.