Laundry treatment machine
US11739459B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2020 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Sep 20, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Provided is a laundry treatment machine including a washing tub, a washing tub motor configured to rotate the washing tub, a drain pump configured to operate to drain the washing tub, a motor configured to operate the drain pump, a converter configured to output DC power, an inverter configured to convert the DC power, a dc terminal voltage detector configured to detect a dc terminal voltage output from the converter, and a controller configured to, when the dc terminal voltage continuously drops during a first period based on an operation of the inverter, perform control to turn off the inverter and operate the converter after the first period. Accordingly, it is possible to stably drive based on the dc terminal voltage during the operation of the drain pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.