Coolant pump for automotive use

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

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F04D 15/00 (2006.01) F01P 5/10 (2006.01) F04D 29/46 (2006.01) F04D 29/56 (2006.01) F04D 29/60 (2006.01) F01P 5/12 (2006.01) F01P 7/16 (2006.01)

Patent

CA 2250160

An impeller pump with thermostatically adjustable guide vanes (4) is suitable for use as an automotive coolant pump. The pump is driven by a constant speed electric motor (1) and flow variation is controlled by varying the orientation of the vanes (4). Orientation of the vanes (4) is effected by a wax-type thermostat, which senses coolant temperature: flow is increased when the coolant is hot, and decreased as the coolant cools. The variable guide vanes (4) are mounted for pivoting about radial axes, and are located just upstream from the pump impeller (2).

Cette pompe à rotor, dotée d'aubes directrices (4) à réglage thermostatique, convient pour le circuit de refroidissement d'une automible. Cette pompe est entraînée par un moteur électrique (1) à vitesse constante et sa variation de débit est commandée par la modification de l'orientation des aubes (4). Cette orientation est commandée par un thermostat à cire qui détecte la température du liquide de refroidissement: le débit augmente quand ce liquide est chaud et il diminue quand ce liquide refroidit. Les aubes directrices réglables (4) sont montées de façon à pivoter autour d'axes radiaux et elles sont situées juste en amont du rotor de pompe (2).

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