System and method for advanced electronic starting switch assembly for split-phase induction motors for domestic dryers
US12244249B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2024 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Sep 11, 2044 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2105/48
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An electronic starting switch assembly and control methods for a dryer having a split-phase induction motor. The assembly comprises a microcontroller unit (MCU) configured to execute a control method that dynamically manages the motor's operation by monitoring the forward magnitude current. The MCU determines a stabilized startup forward magnitude current and calculates a crossover condition, allowing for precise control of the motor's transition to single-phase operation by disconnecting the auxiliary winding and connecting the heater element based on real-time forward magnitude current analysis and processing. The system can also monitor for overload conditions indicative of rotor speed drops and can re-engage the auxiliary winding to maintain motor performance. The assembly includes a housing with a heat-sink for efficient thermal management and environmental protection of electronic components. The disclosed method provides a robust solution for efficient dryer operation by ensuring accurate control of motor start-up, running conditions, and overload protection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.