Motor pump with axial through flow comprising an...

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

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F04B 17/04 (2006.01) A47J 31/44 (2006.01) G01F 1/075 (2006.01)

Patent

CA 2332605

The invention concerns a motor pump with axial through flow comprising an incorporated flowmeter and pressure controller, consisting of an internal axial flow motor pump (1) with electromagnetic motor and hollow free piston, equipped with incorporated flowmeter (2) and flow limiting device (3), and associated with a pressure controller for controlling its supply and including separate internal passages for the liquid flow converging at the motor pump and for connection to a chamber containing a flexible membrane actuating an electric contact controlling the motor pump power supply. Said motor pump is particularly designed to equip automatic coffee machines, but it can be used for numerous other applications requiring pressurised liquid supply from a reservoir.

La présente invention a pour objet une motopompe à écoulement axial traversant avec débitmètre incorporé et pressostat. Elle est constituée d'une motopompe (1) à écoulement axial interne, à moteur électromagnétique et piston libre creux, équipée d'un débitmètre (2) et d'un limiteur de débit (3) incorporés, et associée à un pressostat destiné à contrôler son alimentation et comportant des cheminements internes séparés pour le flux de liquide aboutissant à la motopompe et pour le raccordement à une chambre contenant une membrane souple actionnant un contact électrique de contrôle de l'alimentation de la motopompe. Elle est destinée en particulier à équiper des machines à café automatiques, mais peut être utilisée pour de nombreuses autres applications nécessitant une alimentation en liquide sous pression à partir d'un réservoir.

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