An air duct having an outer surface enclosing an inner space, said inner space in contact with an inner surface of said air duct; said inner surface equipped with air flow obstacles or impediments to create eddys and back flows and reduce noise transmission of air as it travels along the length of the duct.
NOISE ATTENUATED AIR DUCT
2015-08-20
Patent
Electronic Resource
English
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F24F Klimatisierung , AIR-CONDITIONING |