초록 ▼

In order to separate, within a fluid (1), certain particles (2) contained therein, this fluid is arranged in a corridor (C) partly defined by two faces which are close together and substantially parallel to each other and to the direction of separation E and an exciting field is simultaneously appli

In order to separate, within a fluid (1), certain particles (2) contained therein, this fluid is arranged in a corridor (C) partly defined by two faces which are close together and substantially parallel to each other and to the direction of separation E and an exciting field is simultaneously applied to the entire volume of fluid contained in this corridor, according to a direction having at least one component perpendicular to the direction E, which exciting field varies along the said direction in a curve consisting of a regular sequence of mutually identical asymmetric patterns, the mean of this field, taken at each instant along the direction E, being zero, and means are provided for repetitively varying the effect of the exciting field on the particles. The substantially parallel faces may be electrodes between which a potential difference source is connected for producing an electric field thereby exciting particles in the corridor (C). At least one of the electrodes has a corrugated surface with a sequence of asymmetric grooves transverse to the separation direction.

대표청구항 ▼

A separation device for separating, within a fluid, particles contained therein, comprising at least two electrodes facing each other and defining therebetween at least one separation zone in which said fluid is substantially stationary, and potential difference source means connected between said a

A separation device for separating, within a fluid, particles contained therein, comprising at least two electrodes facing each other and defining therebetween at least one separation zone in which said fluid is substantially stationary, and potential difference source means connected between said at least two electrodes for producing an electric field and thereby exciting particles in the separation zone, wherein at least one of the electrodes has a corrugated surface facing the separation zone and consisting, along a separation direction, of a sequence of asymmetric grooves transverse to said separation direction, means being provided for repetitively varying the excitation of the particles in the separation zone.