Method and apparatus for the contactless automatic mixing of a r

Details Method and apparatus for the contactless automatic mixing of a r Method and apparatus for the contactless automatic mixing of a r

1993-09-21

1994-11-08

Jenkins, Robert W.

Agitating

By injecting gas into mixing chamber

Plural gas feeders

366165, 366169, B01F 1302

Patent

active

053621476

ABSTRACT:
Method for the contactless automatic mixing of a liquid reaction mixture in an analysis unit, in which the reaction mixture is located in a vessel accessible from above through an opening, by means of a gas jet escaping from an outlet opening of a mixing element, a rapid, effective and reliable non-invasive thorough mixing of the liquid is achieved by the mixing element being lowered at the start of the mixing operation in the direction of the liquid surface and the lowering movement being stopped in a bottom end position in which the mixing element projects into the vessel, but does not touch the liquid surface, the gas jet is switched on during the lowering of the mixing element, the gas jet is so aligned that it brings about an asymmetrical lowering of a part of the liquid surface in the vicinity of the vessel wall, and the gas jet has a rotational component of motion so that the lowered part of the liquid surface is set in rotation about the axis of the vessel.

REFERENCES:
patent: 3398935 (1968-08-01), Livesey et al.
patent: 3531093 (1970-09-01), Karpacheva
patent: 4390284 (1983-06-01), Hyde
patent: 4498819 (1985-02-01), El-Saie
patent: 4664526 (1987-05-01), Scheffler et al.
Patent Abstracts of Japan, vol. 13, No. 24, Jan. 19, 1989.
Patent Abstracts of Japan, vol. 7, No. 253, Nov. 10, 1983.
Patent Abstracts of Japan, vol. 7, No. 146, Jun. 25, 1983.

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