US 12,117,386 B2
Inspection device and inspection method for pillar-shaped honeycomb filter
Yohei Kajiura, Nagoya (JP); Yuji Watanabe, Kasugai (JP); Yoshihiro Sato, Nissin (JP); and Yuichi Tajima, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Feb. 9, 2022, as Appl. No. 17/650,400.
Application 17/650,400 is a continuation of application No. PCT/JP2021/036519, filed on Oct. 1, 2021.
Claims priority of application No. 2021-101991 (JP), filed on Jun. 18, 2021.
Prior Publication US 2022/0404261 A1, Dec. 22, 2022
Int. Cl. G01N 15/1434 (2024.01); G01N 15/06 (2024.01); G01N 15/08 (2006.01); G01N 15/14 (2024.01); G01N 33/00 (2006.01)
CPC G01N 15/1434 (2013.01) [G01N 2015/0662 (2013.01); G01N 2015/084 (2013.01); G01N 2015/1486 (2013.01); G01N 33/0004 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An inspection device for a pillar shaped honeycomb filter, wherein the inspection device comprises:
a housing portion that can house a pillar shaped honeycomb filter;
an introduction pipe and a discharge pipe through which a gas can flow, each of the introduction pipe and the discharge pipe being connected to the housing portion;
a particle generation portion for generating particles;
a particle introduction portion for introducing the particles generated by the particle generation portion into the introduction pipe;
a gas stirring portion arranged in the introduction pipe on an upstream side of the particle introduction portion in a gas flow direction; and
particle counters for measuring the number of particles, the particle counters being arranged in the introduction pipe and the discharge pipe on a downstream side of the particle introduction portion in the gas flow direction,
wherein the gas stirring portion is a gas stirring plate having a pair of planes perpendicular to the gas flow direction and having a plurality of openings penetrating the pair of planes, and the plurality of openings are provided in a region on an outer peripheral side of the gas stirring plate.