Bi-directional air flow damper having uni-directional...

F - Mech Eng,Light,Heat,Weapons – 16 – K

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F16K 31/00 (2006.01)

Patent

CA 2601083

A damper assembly that produces bi-directional damper door movement from a single-direction motor is provided. Bi-directional rotation of the damper door is enabled by a cam slot on an end of the damper door that is engaged by a motor-driven drive cam having a drive pin extending into the cam slot. As the single-direction motor collectively rotates the drive cam and the drive pin, the drive pin reciprocates within the cam slot. This causes sealing flanges and the damper from the damper door to alternatively engage under a positive pressure and disengage from one another as the damper door is rotated bi- directionally.

L'invention concerne un registre qui produit un déplacement de la porte registre bidirectionnel à partir d'un moteur unidirectionnel. La rotation bidirectionnelle de la porte registre est rendue possible par une fente de came à une extrémité de la porte registre dans laquelle s'engage une came entraînée par un moteur présentant un ergot d'entraînement qui s'étend dans la fente de came. Lorsque le moteur unidirectionnel entraîne collectivement en rotation la came d'entraînement et la broche d'entraînement, la broche d'entraînement est animée d'un mouvement de va-et-vient dans la fente de came. Cela amène des rebords d'étanchéité et le registre de la porte registre à s'accoupler sous une pression positive et à se désaccoupler, alternativement, lorsque la porte registre est entraînée en rotation bidirectionnellement.

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