Title:
INDUCTION HEATING DEVICE AND METHOD FOR CONTROLLING INDUCTION HEATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/071076
Kind Code:
A1
Abstract:
The present specification relates to an induction heating device capable of mitigating the phenomenon in which an output power value decreases during the course of driving a working coil, and a method for controlling the induction heating device. A method for controlling an induction heating device according to one embodiment of the present specification comprises the steps of: obtaining a temperature value of a high-output working coil when the absolute value of the difference between a first final driving frequency of a first working coil and a second final driving frequency of a second working coil is equal to or greater than a predetermined noise avoidance value, and a final driving frequency of a low-output working coil and a target frequency of the low-output working coil are different; determining whether the temperature value satisfies a predetermined output change condition; setting a required power value of the high-output working coil to a predetermined minimum power value, when the temperature value satisfies the output change condition; and re-determining the first final driving frequency of the first working coil and the second final driving frequency of the second working coil.
Inventors:
KIM HANNA (KR)
KANG KYELYONG (KR)
KANG KYELYONG (KR)
Application Number:
PCT/KR2020/010634
Publication Date:
April 15, 2021
Filing Date:
August 11, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H05B6/06; H05B6/12
Foreign References:
| JP3054840B2 | 2000-06-19 | |||
| JP2015225797A | 2015-12-14 | |||
| KR20170075913A | 2017-07-04 | |||
| JP2011028925A | 2011-02-10 | |||
| KR101735754B1 | 2017-05-15 | |||
| KR101735754B1 | 2017-05-15 |
Other References:
See also references of EP 4044767A4
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
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