US 12,140,519 B2
Particle size distribution measurement device, particle analysis unit, program for particle size distribution measurement device, and bubble removal method
Tetsuya Mori, Kyoto (JP); Tomoki Aoyama, Kyoto (JP); and Tatsuhito Nakamura, Kyoto (JP)
Assigned to HORIBA, LTD., Kyoto (JP)
Appl. No. 17/997,058
Filed by HORIBA, LTD., Kyoto (JP)
PCT Filed Mar. 17, 2021, PCT No. PCT/JP2021/010832
§ 371(c)(1), (2) Date Oct. 25, 2022,
PCT Pub. No. WO2021/220652, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 2020-080106 (JP), filed on Apr. 30, 2020.
Prior Publication US 2023/0168167 A1, Jun. 1, 2023
Int. Cl. G01N 15/0205 (2024.01); G01N 15/00 (2024.01); G01N 15/0227 (2024.01); G01N 15/14 (2024.01); G01N 15/1433 (2024.01); G01N 21/47 (2006.01)
CPC G01N 15/0211 (2013.01) [G01N 15/0227 (2013.01); G01N 15/1433 (2024.01); G01N 15/1459 (2013.01); G01N 21/47 (2013.01); G01N 21/4788 (2013.01); G01N 2015/0011 (2013.01); G01N 2015/1486 (2013.01); G01N 2015/1493 (2013.01); G01N 2015/1497 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A particle size distribution measurement device that irradiates light on particles as being a measuring object that is dispersed in a dispersion medium, and calculates particle size distribution of the particles based on a light intensity signal indicating light intensity of diffracted/scattered light generated by irradiating the light, comprising
a circulation flow channel through which the dispersion medium circulates,
a flow cell arranged in the circulation flow channel,
an imaging device that takes a particle image as being an image of a particle in the flow cell, and
a bubble removal execution part that obtains bubble information which is obtained based on the particle image and which is about a bubble in the dispersion medium, and that executes a bubble removal sequence to remove the bubble from the dispersion medium circulating in the circulation flow channel in case that the bubble information meets a predetermined condition.