Ventilation Device for an Interior of a Motor Vehicle and Method for Operating a Ventilation Device of This Kind
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorJan BIERMANN
Life of this patent
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Abstract
A ventilation device for an interior of a motor vehicle includes a ducting system with at least one air duct and a blower via which an air flow can be generated in the ducting system. To allow active ventilation of the interior at particularly low noise levels, at least one sound transducer of the ventilation device is provided via which a sound pressure in the ducting system can be detected and a signal corresponding to the sound pressure detected can be transmitted to at least one second sound transducer of the ventilation device. In order to reduce the sound pressure, a counter sound pressure depending on the signal in the ducting system can be generated by the at least one second sound transducer.
Claims12
A ventilation device for an interior compartment of a motor vehicle, comprising:
- a channel system which includes an air channel;
- a blower, wherein an air stream is generatable in the channel system by the blower;
- at least one first sound transducer;
- and
- at least one second sound transducer;
- wherein a sound pressure in the channel system is detectable by the at least one first sound transducer and wherein a signal corresponding to a detected sound pressure is transmittable to the at least one second sound transducer by the at least one first sound transducer;
- wherein an antisound pressure for reducing the detected sound pressure is generatable by the at least one second sound transducer dependent on the signal.
Dependencies are inferred from the claim text.