Pump and pump control circuit apparatus and method

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

Patent

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Details

F04B 49/06 (2006.01) F04B 43/00 (2006.01) F04B 43/02 (2006.01) F04B 43/04 (2006.01)

Patent

CA 2468454

A method and apparatus for a pump and a pump control system. The apparatus includes pistons (62) integrally formed in a diaphragm (54) and coupled to the diaphragm by convolutes. The convolutes have a bottom surface angled with respect to a top surface of the pistons. The apparatus also includes an outlet port (24) positioned tangentially with respect to the perimeter of an outlet chamber (94). The apparatus further includes a non-mechanical pressure sensor (116) coupled to a pump control system. For the method of the invention, the micro-controller provides a pulse-width modulation control signal to an output power stage in order to selectively control the power provided to the pump. The control signal is based on the pressure within the pump, the current being provided to the pump, and the voltage level of the battery.

L'invention concerne un procédé et un appareil pour une pompe et un système de commande de pompe. Ledit appareil comprend des pistons (62) formés solidaires dans un diaphragme (54) et raccordés à celui-ci par des structures convolutées. Lesdites structures convolutées présentent une surface inférieure orientée par rapport à une surface supérieure des pistons. Ledit appareil comprend également un orifice de sortie (24) placé tangentiellement par rapport au périmètre d'une chambre de sortie (94). Ledit appareil comprend en outre un capteur de pression non mécanique (116) raccordé à un système de commande de pompe. En ce qui concerne le procédé de l'invention, un microcontrôleur envoie un signal de commande de modulation d'impulsions en durée à un étage de puissance de sortie afin de commander sélectivement la puissance fournie à ladite pompe. Le signal de commande est fondé sur la pression à l'intérieur de la pompe, et sur le niveau de tension de la pile.

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