| 摘要 |
The invention relates to a ventilation nozzle for motor vehicles with a nozzle body which tapers in the flow direction with the formation of an acceleration zone and, at the outlet side, merges into an orifice with a slit-shaped clear cross-section, from which the delivered air, whose delivery rate can be variably proportioned, is capable of emerging with acceleration, the outlet velocity of the free air jet being increased by a throttle device arranged at the outlet side. To improve the suitability of the ventilation nozzle for accelerating low volume flow rates, it is provided for the throttle device to be formed by a hollow body with variable volume, with which an effective outlet cross-section of the acceleration zone can be reduced.
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