Motor with a board having microcomputer and drive circuit, and air conditioning apparatus having the motor
AssigneeMitsubishi Electric Corporation
InventorsHiroki Aso, Takaya Shimokawa, Ryogo Takahashi, Kazuma Nomoto
Life of this patent
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Abstract
A motor includes a rotor having a rotation shaft, a rotor core attached to the rotation shaft, and a rotor magnet embedded in the rotor core, a stator disposed on an outer side of the rotor in a radial direction about a central axis of the rotation shaft and surrounding the rotor, a board disposed on one side of the stator in a direction of the central axis, and a microcomputer mounted on the board. The microcomputer is disposed on an outer side of the rotor magnet in the radial direction.
Claims18
A motor comprising:
- a rotor having a rotation shaft, a rotor core attached to the rotation shaft, and a rotor magnet embedded in the rotor core;
- a stator disposed on an outer side of the rotor in a radial direction about a central axis of the rotation shaft, the stator surrounding the rotor;
- a board disposed on one side of the stator in a direction of the central axis;
- a microcomputer mounted on the board and performing arithmetic processing;
- a drive circuit mounted on the board and controlling rotation of the rotor;
- a mold resin portion covering the stator, the board, the microcomputer and the drive circuit;
- and
- a heat sink disposed on a side of the board opposite to the stator,
- wherein the heat sink is disposed to face the microcomputer and the drive circuit, and is exposed to an outside from the mold resin portion,
- wherein the microcomputer is provided on a surface of the board opposite to the stator, the microcomputer being disposed on an outer side of the rotor magnet in the radial direction, and
- wherein a distance from the central axis to the microcomputer in the radial direction is longer than a distance from the central axis to the drive circuit in the radial direction.
An air conditioning apparatus comprising an outdoor unit and an indoor unit connected to the outdoor unit via a refrigerant pipe,
- at least one of the outdoor unit and the indoor unit comprising a fan,
- the fan comprising an impeller and a motor rotating the impeller,
- the motor comprising:
- a rotor having a rotation shaft, a rotor core attached to the rotation shaft, and a rotor magnet embedded in the rotor core;
- a stator disposed on an outer side of the rotor in a radial direction about a central axis of the rotation shaft, the stator surrounding the rotor;
- a board disposed on one side of the stator in a direction of the central axis;
- a microcomputer mounted on the board and performing arithmetic processing;
- a drive circuit mounted on the board and controlling rotation of the rotor;
- a mold resin portion covering the stator, the board, the microcomputer and the drive circuit;
- and
- a heat sink disposed on a side of the board opposite to the stator,
- wherein the heat sink is disposed to face the microcomputer and the drive circuit, and is exposed to an outside from the mold resin portion,
- wherein the microcomputer is provided on a surface of the board opposite to the stator, the microcomputer being disposed on an outer side of the rotor magnet in the radial direction, and
- wherein a distance from the central axis to the microcomputer in the radial direction is longer than a distance from the central axis to the drive circuit in the radial direction.
Dependencies are inferred from the claim text.