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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12244249 B1

PDFFull Text
Date of Patent:
Mar. 04, 2025

Filed:

Sep. 11, 2024

System and method for advanced electronic starting switch assembly for split-phase induction motors for domestic dryers

Applicant:

Wolong Electric Group Co., Ltd., Zhejiang, CN;

Inventors:

Dingsheng Lin, Venetia, PA (US);

Zheng Zhang, Saint Joseph, MI (US);

Qianjie Ye, Jinan, CN;

Hailing Li, Jinan, CN;

Jiyi Sun, Jinan, CN;

Jie Liu, Jinan, CN;

Changping Yang, Shenzhen, CN;

Wangyong Liu, Shenzhen, CN;

Shudong Zhu, Shenzhen, CN;

Assignee:

Wolong Electric Group Co., Ltd., Zhejiang, CN;

Attorney:

Warner Norcross + Judd LLP

Primary Examiner:

Stephen M Gravini

Int. Cl.
CPC ...
H02P 1/42 (2006.01); D06F 34/08 (2020.01); D06F 34/10 (2020.01); D06F 34/20 (2020.01); D06F 58/26 (2006.01); D06F 58/38 (2020.01); D06F 103/24 (2020.01); D06F 103/46 (2020.01); D06F 105/28 (2020.01); D06F 105/48 (2020.01); G01R 31/34 (2020.01); H02P 1/02 (2006.01); H02P 23/00 (2016.01); H02P 23/14 (2006.01); H02P 25/062 (2016.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
H02P 1/42 (2013.01); D06F 34/08 (2020.02); D06F 34/10 (2020.02); D06F 34/20 (2020.02); D06F 58/26 (2013.01); D06F 58/38 (2020.02); G01R 31/343 (2013.01); H02P 1/028 (2013.01); H02P 23/0004 (2013.01); H02P 23/14 (2013.01); H02P 25/062 (2016.02); H05K 7/209 (2013.01); D06F 2103/24 (2020.02); D06F 2103/46 (2020.02); D06F 2105/28 (2020.02); D06F 2105/48 (2020.02);
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.

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