US 11,789,056 B2
Electromagnetic stirrer and reflection chamber
Masataka Midori, Tokyo (JP); Hiroshi Kurihara, Tokyo (JP); Yutaka Sakai, Tokyo (JP); and Hiroyuki Nedate, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 17/636,659
Filed by TDK CORPORATION, Tokyo (JP)
PCT Filed Jul. 15, 2020, PCT No. PCT/JP2020/027433
§ 371(c)(1), (2) Date Feb. 18, 2022,
PCT Pub. No. WO2021/049161, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-163596 (JP), filed on Sep. 9, 2019.
Prior Publication US 2022/0291270 A1, Sep. 15, 2022
Int. Cl. G01R 27/32 (2006.01); G01R 29/10 (2006.01)
CPC G01R 29/105 (2013.01) 18 Claims
OG exemplary drawing
 
1. An electromagnetic stirrer comprising:
a shaft body extending in a first direction; and
a first stirring blade and a second stirring blade on the shaft body,
wherein
the first stirring blade and the second stirring blade are aligned from a reference position of the shaft body in the first direction in order of the first stirring blade and the second stirring blade,
a shape of the first stirring blade and a shape of the second stirring blade are similar to each other,
a size of the first stirring blade is different from a size of the second stirring blade, and
a ratio between a first distance from the reference position to a position determined in accordance with the shaft body and the first stirring blade, among distances in the first direction, and a second distance from the reference position to a position determined in accordance with the shaft body and the second stirring blade, among the distances in the first direction, is the same as a similarity ratio between the first stirring blade and the second stirring blade.