Embedded fluid pump using a homopolar motor

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

Patent

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F04B 17/00 (2006.01)

Patent

CA 2580484

A fluid pump (100) having a homopolar motor (110). The homopolar motor includes a rotatable disk (115) defining at least one impeller (120). The impeller can include an orifice within the rotatable disk. The rotatable disk can be at least partially disposed within a cavity (145) defined in the substrate (105), such as a ceramic substrate, a liquid crystal polymer substrate, or a semiconductor substrate. A closed loop control circuit (335) can be included to control the rotational speed of the rotatable disk. For example, the control circuit can control a voltage source or a current source that applies voltage across the rotatable disk. The control circuit also can control a strength of a magnet (310) that applies a magnetic field (305) substantially aligned with an axis or rotation (155) of the rotatable disk.

L'invention concerne une pompe de fluide (100) possédant un moteur homopolaire (110). Ce moteur polaire comprend un disque rotatif (115) définissant au moins un rotor (120). Ce rotor peut comprendre un orifice situé dans le disque rotatif. Le disque rotatif peut être du moins partiellement placé dans une cavité (145) définie dans le substrat (105) tel qu'un substrat céramique, un substrat polymère à cristaux liquides, ou un substrat semi-conducteur. Un circuit de commande à boucle fermée (335) peut être compris pour commander la vitesse de rotation du disque rotatif. Par exemple, Le circuit de commande peut commande une source de tension ou une source de courant qui applique une tension à travers le disque rotatif. Le circuit de commande peut également commander la force d'un aimant (310) qui applique un champ magnétique (305) sensiblement aligné avec un axe ou la rotation (155) du disque rotatif.

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