ELECTROMAGNETICALLY HEATED COOKING UTENSIL, AND HEATING CONTROL CIRCUIT AND METHOD THEREFOR

WIPO Patent Application WO/2019/192157

A1

An electromagnetically heated cooking utensil (1000), and a heating control circuit (1100) and method therefor. The heating control circuit (1100) comprises: a first resonance unit (10); a second resonance unit (20); a first power switch (30); a second power switch (40); a first synchronization unit (50) that detects voltages of both ends of the first resonance unit (10) to output a first synchronization signal; a second synchronization unit (60) that detects voltages of both ends of the second resonance unit (20) to output a second synchronization signal; and a control unit (70) that selects, according to the heating mode of the electromagnetically heated cooking utensil (1000), the first synchronization signal to generate a driving signal for driving the first power switch (30), a second synchronization signal to generate a driving signal for driving the second power switch (40), and one of the first synchronization signal and the second synchronization signal to generate a driving signal for driving the first power switch (30) and the second power switch (40). Therefore, the heating efficiency and the service life of the power switches are improved.

ZENG LUTIAN (CN)
LEI JUN (CN)
ZOU WEI (CN)
WANG YUNFENG (CN)
XING FENGLEI (CN)

PCT/CN2018/110440

October 10, 2019

October 16, 2018

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FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD (CN)

H05B6/12; H05B6/06

CN105246182A	2016-01-13
CN206506730U	2017-09-19
CN103596307A	2014-02-19
CN106535381A	2017-03-22
CN105764175A	2016-07-13
CN203407030U	2014-01-22
CN105792399A	2016-07-20
JP2001196156A	2001-07-19

See also references of EP 3749055A4

TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)

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