Patents by Inventor Wenfeng WENG

Wenfeng WENG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electromagnetic heating control circuit and electromagnetic heating device
    Patent number: 10638551
    Abstract: Disclosed is an electromagnetic heating control circuit, comprising a control chip, a rectifier filter circuit, a resonant capacitor, a switching transistor, a drive circuit, and a synchronous voltage detection circuit. The switching transistor comprises a first end, a second end, and a control end. The first end is connected to a positive output end of the rectifier filter circuit by using the resonant capacitor. The second end is connected to a negative output end of the rectifier filter circuit by using a current limiting resistor. The control chip comprises a positive phase voltage input end, a negative phase voltage input end, a voltage detection end, and a signal input end. The positive phase voltage input end and the negative phase voltage input end detect voltages at two ends of the resonant capacitor by using the synchronous voltage detection circuit. The signal output end is connected to the control end by using the drive circuit.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 28, 2020
    Assignees: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING CO., LTD, MIDEA GROUP CO., LTD.
    Inventors: Zhicai Liu, Zhifeng Wang, Wenfeng Weng, Dali Ou, Zhihai Ma, Shirun Wu, Yifan Chen, Xinyuan Wang
  • ELECTROMAGNETIC HEATING CONTROL CIRCUIT AND ELECTROMAGNETIC HEATING DEVICE
    Publication number: 20180020507
    Abstract: Disclosed is an electromagnetic heating control circuit, comprising a control chip, a rectifier filter circuit, a resonant capacitor, a switching transistor, a drive circuit, and a synchronous voltage detection circuit. The switching transistor comprises a first end, a second end, and a control end. The first end is connected to a positive output end of the rectifier filter circuit by using the resonant capacitor. The second end is connected to a negative output end of the rectifier filter circuit by using a current limiting resistor. The control chip comprises a positive phase voltage input end, a negative phase voltage input end, a voltage detection end, and a signal input end. The positive phase voltage input end and the negative phase voltage input end detect voltages at two ends of the resonant capacitor by using the synchronous voltage detection circuit. The signal output end is connected to the control end by using the drive circuit.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 18, 2018
    Inventors: Zhicai LIU, Zhifeng WANG, Wenfeng WENG, Dali QU, Zhihai MA, Shirun WU, Yifan CHEN, Xinyuan WANG