Method for controlling spinning in drum-type washing machine
US7530132B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Dec 18, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2103/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method and apparatus control a drum-type washing machine during a dewatering process in which a motor, coupled to a drum, rotates the drum to extract water from laundry contained in the drum. The method includes rotating the motor at a first rotating speed; performing at least one eccentricity detection at the first rotating speed, to obtain an eccentricity value; accelerating, if the obtained eccentricity value is within a nominal range, the motor from the first rotating speed to a second rotating speed, the second rotating speed being lower than a resonance range of the motor and rotated drum; and entering a main dewatering phase based on the at least one eccentricity detection. The second rotating speed of the motor is maintained at a constant level for a predetermined time before the main dewatering phase is entered. The constant level may be applied to a preliminary dewatering stage performed prior to the first rotating speed acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.