Back to results
US 8,506,264 B2Granted
Motor and cooling fan with a circuit board having a heat-conducting insulator
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorsAlex Horng, Ming-Fu Wu, Ming-Sheng Wang, Kun-Li Hsieh, Cheng-Te Liu
Life of this patent
Estimating the term…
Abstract
A motor includes a base, a stator, a rotor, a circuit board and a heat-conducting insulator. The base includes a cooling plate. The stator is coupled to the base. The rotor is rotatably coupled to the base and aligned with the stator. The circuit board is received in the base and electrically connected to the stator. The heat-conducting insulator is disposed between the cooling plate and the circuit board, and abuts with the cooling plate and one face of the circuit board.
Claims16
A motor, comprising:
- a base including a cooling plate;
- a stator coupled to the base;
- a rotor rotatably coupled to the base and aligned with the stator;
- a circuit board coupled to the base, having first and second faces and electrically connected to the stator;
- a plurality of electronic components mounted on the first and second faces of the circuit board;
- a heat-conducting insulator disposed between the cooling plate and the first face of the circuit board and between the cooling plate and the plurality of electronic components mounted on the first face of the circuit board, and respectively abutting with the cooling plate and one face of the circuit board, wherein the heat-conducting insulator is made of an insulation material selected from one of acrylic resin, silica gel and other composite material with silica gel and one of a ceramic powder and a metal powder;
- and
- an auxiliary heat-conducting insulator disposed at the second face of the circuit board and extending over the plurality of electronic components mounted on the second face of the circuit board, wherein the auxiliary heat-conducting insulator is made of an insulation material selected from one of acrylic resin, silica gel and other composite material with silica gel;
- wherein the stator includes an upper end and a lower end spaced from the upper end in a direction parallel to the rotor, with the stator further including a plurality of circumferentially spaced heat-conducting members each having one end extending beyond the lower end and through the circuit board to contact with the heat-conducting insulator and having another end extending to the upper end, with the plurality of the circumferentially spaced heat-conducting members extending parallel to the rotor.
6 more elements
A cooling fan including:
- a frame including an air inlet and an air outlet;
- a base received in and connected to the frame via a plurality of connection members, wherein the base includes a cooling plate;
- a stator coupled to the base;
- a rotor rotatable coupled to the base and aligned with the stator, and including a plurality of vanes arranged on an outer periphery thereof,
- a circuit board coupled to the base, having first and second faces and electrically connected to the stator;
- a plurality of electronic components mounted on the first and second faces of the circuit board;
- a heat-conducting insulator disposed between the cooling plate and the first face of the circuit board and between the cooling plate and the plurality of electronic components mounted on the first face of the circuit board, and respectively abutting with the cooling plate and the first face of the circuit board, wherein the heat-conducting insulator is made of an insulation material selected from one of acrylic resin, silica gel and other composite material with silica gel and one of a ceramic powder and a metal powder;
- and
- an auxiliary heat-conducting insulator disposed at the second face of the circuit board and extending over the plurality of electronic components mounted on the second face of the circuit board, wherein the auxiliary heat-conducting insulator is made of an insulation material selected from one of acrylic resin, silica gel and other composite material with silica gel;
- wherein the stator includes an upper end and a lower end spaced from the upper end in a direction parallel to the rotor, with the stator further including a plurality of circumferentially spaced heat-conducting members each having one end extending beyond the lower end and through the circuit board to contact with the heat-conducting insulator and having another end extending to the upper end, with the plurality of the circumferentially spaced heat-conducting members extending parallel to the rotor.
7 more elements
Dependencies are inferred from the claim text.