Central vacuum system with secondary airflow path

A - Human Necessities – 47 – L

Patent

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A47L 5/00 (2006.01) A47L 9/00 (2006.01)

Patent

CA 2513062

A central vacuum system includes a motor-cooling airflow path that provides sufficient cooling for the motor and its drive components even though the cooling air is partially restricted by a downstream filter that captures airborne carbon dust emitted from the motor's commutator brushes. A divider system creates multiple chambers within the vacuum system's canister, and in some embodiments, air passageways in the canister and in the divider system direct the cooling air through the chambers in a flow pattern that avoids contaminating the drive components with carbon dust.

Un système d'aspirateur central comprend un circuit d'écoulement d'air secondaire de refroidissement du moteur qui assure un refroidissement suffisant du moteur et de ses éléments d'entraînement même si l'écoulement d'air de refroidissement est partiellement réduit par un filtre en aval qui retient la poussière de carbone en suspension dans l'air qui provient des balais des collecteurs du moteur. Un système diviseur forme plusieurs chambres à l'intérieur du réservoir de l'aspirateur; dans certains modes de réalisation, des passages d'air dans le réservoir et dans le système diviseur dirigent l'air de refroidissement dans les chambres selon un écoulement qui empêche la contamination des éléments d'entraînement par la poussière de carbone.

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