US 11,937,360 B2
High frequency heating apparatus
Takashi Uno, Shiga (JP); Daisuke Hosokawa, Shiga (JP); Fumitaka Ogasawara, Hyogo (JP); Mikio Fukui, Shiga (JP); Koji Yoshino, Shiga (JP); and Yoshiharu Oomori, Shiga (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/251,941
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Aug. 1, 2019, PCT No. PCT/JP2019/030119
§ 371(c)(1), (2) Date Dec. 14, 2020,
PCT Pub. No. WO2020/027240, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 2018-146144 (JP), filed on Aug. 2, 2018.
Prior Publication US 2021/0267025 A1, Aug. 26, 2021
Int. Cl. H05B 6/62 (2006.01); H03H 7/38 (2006.01); H05B 6/50 (2006.01); H05B 6/54 (2006.01)
CPC H05B 6/62 (2013.01) [H03H 7/38 (2013.01); H05B 6/50 (2013.01); H05B 6/54 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A high frequency heating apparatus comprising:
a first electrode that is flat;
a plurality of second electrodes placed opposite to the first electrode, the plurality of second electrodes each being flat;
a high-frequency power supply configured to apply a high-frequency voltage to the first electrode;
a matching unit placed between the first electrode and the high-frequency power supply and configured to be impedance-matched with the high-frequency power supply;
a controller configured to control the high-frequency power supply; and
an electric field regulator configured to individually adjust electric field strengths in a plurality of regions located between the first electrode and the plurality of second electrodes,
wherein the electric field regulator comprises a plurality of impedance elements placed between the plurality of second electrodes and a ground, the plurality of impedance elements being passive elements, and the electric field regulator making the plurality of impedance elements adjust impedances between the plurality of second electrodes and the ground.