Multi pumping chamber magnetostrictive pump

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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F04B 17/00 (2006.01)

Patent

CA 2470657

A positive displacement pump includes a magnetostrictive actuator. A single actuator drives multiple pumping chambers. The pump may include two pumping chambers driven in phase by the linear expansion of the actuator at both its ends. The pump may include a third pumping cavity, driven by the transverse expansion and contraction of the actuator, out of phase with either cavity driven by the lengthwise extension of the actuator. A pump assembly having multiple pumps each including a magnetostrictive element is also disclosed.

Cette invention concerne une pompe volumétrique à actionneur magnétostrictif. Un seul actionneur entraîne les différentes chambres de pompage. Cette pompe peut comprendre deux chambres de pompage entraînées en phase par l'expansion linéaire de l'actionneur au niveau de ses deux extrémités. Cette pompe peut comprendre une troisième cavité de pompage entraînée par l'expansion et la contraction transversales de l'actionneur, hors phase, une cavité quelconque étant entraînée par l'extension en longueur de l'actionneur. Cette invention concerne également un ensemble pompe équipé de multiples pompes munies chacune d'un élément magnétostrictif.

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