Power conversion device, motor including the same, air conditioner having the motor incorporated therein, and ventilation fan having the motor incorporated therein
US9819297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2011 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Feb 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10969
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion device includes a printed circuit board, whose mounting surface is opposite to an annular surface formed by an annular stator that constitutes a motor, arranged to be separated from the annular surface with a predetermined distance, and mounted with a Hall element that detects a rotation position of a rotor of the motor on a mounting surface on a side of the stator; an inverter IC that is mounted on the mounting surface on the side of the stator of the printed circuit board to supply a high-frequency current to the stator; and an overheat detection unit that is mounted on the mounting surface on the side of the stator of the printed circuit board and detects an overheated state of the inverter IC. When the overheat detection unit detects an overheated state, the inverter IC restricts or stops a current to be supplied to the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.