Very small chemical device and flow rate adjusting method...

B - Operations – Transporting – 01 – J

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B01J 19/00 (2006.01) B01J 4/00 (2006.01) B01L 3/00 (2006.01) B81B 1/00 (2006.01) C12M 1/00 (2006.01) F15C 5/00 (2006.01) G01N 31/20 (2006.01) G01N 37/00 (2006.01) G01N 30/32 (2006.01) G01N 30/60 (2006.01)

Patent

CA 2422550

A very small chemical device with a valve function, having high pressure- resistance and a flow channel cross-sectional area independent of liquid pressure, capable of suppressing adsorption of living body components, and easy to manufacture; and a flow rate adjusting method therefor. A member (A) having a groove in its surface has another member (B) bonded to the grooved surface thereof, and the groove of the member (A) cooperates with the member (B) to define a capillary flow channel having a width of 1-1000 m and a height of 1-1000 m on the bond surface between the members (A, B), the flow channel having a gap somewhere therein, the width of the gap being 0.5 100 times that of the capillary flow channel, the maximum height/maximum width ratio of the gap being 1 or less, either the member (A) or the member (B) being made of a soft material having a Young's modulus of from 0.1 Mpa to less than 700 Mpa at least in the portion opposed to the gap, the valve function being such that selectively pressing the gap from the outside of the member (A) and/or the member (B) allows the volume of the gap to reversibly decrease.

L'invention concerne un très petit dispositif chimique doté d'une fonction de soupape, comprenant une résistance aux fortes pressions ainsi qu'une zone à section de canal d'écoulement, indépendante de la pression du liquide, capable de supprimer l'adsorption de composants organiques vivants, et facile à fabriquer. Elle concerne également un procédé de réglage de débit destiné à ce dispositif. Un élément (A) doté d'une gorge sur sa surface comprend un autre élément (B) fixé sur la surface de cette gorge, et il coopère avec l'élément (B) de manière à définir, sur la surface de liaison entre les éléments (A, B), un canal d'écoulement capillaire possédant une largeur comprise entre 1 et 1000 ?m et une hauteur comprise entre 1 et 1000 ?m, ce canal d'écoulement présentant un espace quelque part dans son intérieur, la largeur de l'espace représentant 0,5 à 100 fois celle du canal d'écoulement capillaire, et le rapport entre la hauteur maximale et la largeur maximale de l'espace étant de l'ordre de 1 ou moins. En outre, l'élément (A) ou l'élément (B) est réalisé dans un matériau mou possédant un module de Young compris entre 0,1 Mpa et au maximum 700 Mpa, au moins dans la portion opposée à l'espace, la fonction de la soupape étant telle que la compression sélective de l'espace, à partir de l'extérieur de l'élément (A) et/ou de l'élément (B) permet au volume de l'espace de décroître de manière réversible.

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