Electronic micro-pump

Details Electronic micro-pump Electronic micro-pump

B - Operations, Transporting

05

B

B05B 9/04 (2006.01) B05B 9/08 (2006.01) B05B 11/00 (2006.01) F04B 33/00 (2006.01)

Patent

CA 2431169

The invention concerns an electronic micro-pump provided with a cylindrical body (1) containing a metering chamber (10) delimited by a piston (2) and communicating with a reservoir via a supply orifice (10a) equipped with an intake valve and with outside via an ejection orifice (10b) equipped with an exhaust valve. The invention is characterised in that the piston (2) is connected to an external reciprocating actuator and at least one of said valves consists of a closing element (3, 6, 7) adapted to be driven in translation, by friction contact with said piston (2) successively in one direction then in the other and whereof the stroke in the chamber (10) is shorter than that of the piston.

Micropompe pourvue d'un corps cylindrique (1) renfermant une chambre de dosage (10) délimitée par un piston (2) et communiquant, d'une part, avec un réservoir via un orifice d'alimentation (10a) muni d'un clapet d'admission et, d'autre part, avec l'extérieur via un orifice d'éjéction (10b) muni d'un clapet d'échappement, caractérisée en ce que le piston (2) est raccordé à un actionneur alternatif extérieur et en ce qu'au moins l'un desdits clapets est constitué d'un élément obturant (3, 6, 7) susceptible d'être entrâiné en translation, par contact de friction avec ledit piston (2), successivement dans un sens puis dans l'autre et dont la course dans la chambre (10) est inférieure à celle dudit piston.

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