Vehicle ventilation system

Details Vehicle ventilation system Vehicle ventilation system

B - Operations, Transporting

60

H

B60H 1/24 (2006.01) B60H 1/26 (2006.01)

Patent

CA 2324687

A vehicle ventilation system mounted to the upper portion of the exterior structure of a vehicle's occupant cabin. The components of the exterior structure of the occupant cabin define an opening through the exterior structure of the occupant cabin in the upper portion of the occupant cabin. A duct is mounted to the exterior structure of the occupant cabin and has a first end in fluid communication with the opening in the exterior structure of the occupant cabin. A second end of the duct is positioned below the first end of the duct and is open to and in fluid communication with the outside atmosphere. A fan is mounted to the exterior structure of the occupant cabin and is positioned such that when in operation it can be operated to move air through the opening in the exterior structure of the occupant cabin. The fan is controllable to change the rate and direction of the flow of air which it creates. A first rotary damper is mounted over the opening in the exterior structure of the occupant cabin and can be selectively opened or closed to allow or prevent air flow through the opening in the exterior structure of the occupant cabin. A second damper is mounted in a position such that it radially surrounds the impeller of the fan and can be used to control the flow of air radially outward from or radially inward toward the impeller of the fan.

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