Air vent assembly of air circulation system, has secondary air inlet region which is provided for admission of secondary air into air guide channel in channel region having minimum cross sectional flow region

摘要

The air vent assembly has an air stream channel (28) which is provided for guiding the main air (H) of a main air inlet region (18) to an air outlet region (40). The minimum cross sectional flow region of ??the air duct is reduced from the main air inlet region away from the direction of the air outlet region to a channel region (30). A secondary air inlet region (41) is provided for admission of the secondary air into the air guide channel in the region of the channel region having minimum cross sectional flow region. An independent claim is included for air circulation system.