Title:
COOKING APPLIANCE AND ULTRASONIC OSCILLATOR DRIVE CONTROL METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/029695
Kind Code:
A1
Abstract:
A cooking appliance and an ultrasonic oscillator drive control method and apparatus, the ultrasonic oscillator drive control method comprising the following steps: acquiring state parameters of a resonant circuit in which the ultrasonic oscillator is located (S1); and, on the basis of the state parameters, adjusting the frequency of an alternating current control signal of the resonant circuit (S2). The present method can adjust the frequency of the alternating current control signal of the resonant circuit on the basis of the state parameters of the resonant circuit in which the ultrasonic oscillator is located, such that the new PWM frequency is consistent with the LC intrinsic frequency after drift and the ultrasonic transducer works in the best state, implementing automatic tracking of the frequency, and effectively increasing the reliability of the product and the service life of the product.
Inventors:
ZENG LUTIAN (CN)
LEI JUN (CN)
MEI RUOYU (CN)
WANG YUNFENG (CN)
LEI JUN (CN)
MEI RUOYU (CN)
WANG YUNFENG (CN)
Application Number:
PCT/CN2019/092900
Publication Date:
February 13, 2020
Filing Date:
June 26, 2019
Export Citation:
Assignee:
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD (CN)
International Classes:
A47J27/08
Foreign References:
| CN1595783A | 2005-03-16 | |||
| CN1595783A | 2005-03-16 | |||
| CN106961229A | 2017-07-18 | |||
| CN106961229A | 2017-07-18 | |||
| CN207430653U | 2018-06-01 | |||
| CN202910002U | 2013-05-01 | |||
| CN107028475A | 2017-08-11 | |||
| CN101684600A | 2010-03-31 | |||
| CN201026489Y | 2008-02-27 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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