Heat-dissipating device and motor structure thereof
AssigneeDelta Electronics, Inc.
InventorsShun-Chen Chang, Wen-Shi Huang
Life of this patent
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Abstract
A heat-dissipating device and a motor structure. The heat-dissipating device has a outer frame provided with a seat, at least two rotors, a control unit and a stator. The rotors are respectively disposed on the seat. The control unit is disposed on the seat for controlling the rotation of the rotors. The stator for driving the rotors includes a plurality of silicon steel sheets or iron core embedded in the seat and a plurality of coils. Controlling the rotors with a single stator and a single control unit reduce the volume and cost of the heat-dissipating device.
Claims23
A heat-dissipating device, comprising:
- a fixed seat;
- a plurality of hollow portions penetrating through the fixed seat and extending outward from sides of the fixed seat, wherein each hollow portion has a through hole;
- at least two rotors respectively disposed on the fixed seat;
- a control unit disposed on the fixed seat for controlling the rotation of the rotors;
- and
- a stator having a plurality of silicon steel sheets or cores embedded in the through holes of the hollow portions of the fixed seat, and a plurality of coils for driving the rotors.
A heat-dissipating device, comprising:
- an outer frame having a fixed seat disposed therein;
- a connecting portion connecting the fixed seat to an inner surface of the outer frame, for fixedly receiving the fixed seat in the outer frame;
- at least two rotors respectively disposed on the fixed seat and arranged in the outer frame in series;
- and
- a stator having an electromagnetic element embedded in the fixed seat, and a coil for driving the rotors.
A motor structure for a fan having a fixed seat, comprising:
- at least two rotors respectively disposed on the fixed seat;
- a stator having an electromagnetic element embedded in the fixed seats and a coil for driving the rotors;
- and
- a control unit disposed on the fixed seat and having a plurality of electronic components and a Hall element for driving and controlling the rotation of the heat-dissipating device;
- wherein one of the rotors is active and the other is passive, and the magnetic field of the active rotor is detected by the Hall element so as to control the switched magnetic forces of the coils to drive the active rotor, and the passive rotor is synchronically rotated in the same or counter direction with respect to the active rotor while switching the magnetic forces of the coils.
Dependencies are inferred from the claim text.