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Patent Searching and Data


Title:
CHEMICAL ANALYZER
Document Type and Number:
Japanese Patent JP3812219
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve the stirring and mixing efficiency by automatically detecting the viscosity, concentration, surface tension, hydrophilicity to a reactor and the like of a sample and a reagent, and automatically measuring a stirring degree during or after stirring.
SOLUTION: A pair of side array sound sources 205 and a pair of sound receiving elements 207 respectively opposite to one another are operated to measure the transmission of partial acoustic wave of the reaction vessel 102 at the position. This measurement is executed on each pair, a transmission amount of acoustic wave at each position is measured, and a position of the maximum difference in the transmission amount is regarded as a position of a liquid surface 209. When the acoustic wave of polarized intensity is applied from a lower sound source 206 to a sound source side, and the liquid surface 209 is pressed up to a reaction vessel 102 side surface, the liquid surface 209 is lowered at a side surface at the opposite side. This is determined by the surface tension, concentration, hydrophilic property to a vessel wall and the like of an object to be stirred, and the characteristics can be identified on the basis of the intensity of the applied acoustic wave and the polarization of the liquid surface 209. This detection is executed not only before the stirring but also similarly executed after the stirring to be compared, and the achievement in stirring and mixing can be evaluated.


Inventors:
Kato sect
Ryo Miyake
Takao Terayama
Hiroshi Mimaki
Hiroyasu Uchida
Tomonori Mimura
Akira Inagaki
Application Number:
JP14764699A
Publication Date:
August 23, 2006
Filing Date:
May 27, 1999
Export Citation:
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Assignee:
株式会社日立製作所
International Classes:
B01F15/00; G01N35/02; B01F11/02; G01N9/24; G01N11/14; G01N13/02; G01N35/00; (IPC1-7): G01N35/02; B01F15/00; G01N9/24; G01N11/14; G01N13/02
Domestic Patent References:
JP8233827A
JP8075752A
JP8146007A
JP9155290A
Attorney, Agent or Firm:
Manabu Inoue