Ventilating system for commercial vehicle, has acoustical foam provided in conduit for partially covering internal wall of conduit, and deflector element directing air flow from inlet of conduit towards acoustical foam

摘要

#CMT# #/CMT# The system has a ventilating conduit (55) including an inlet (57) for introducing an air flow (69), and an outlet (59) for evacuating the air flow. An acoustical foam (65) is provided in the conduit for partially covering an internal wall of the conduit. A deflector element (67) is arranged upstream of the conduit with respect to a circulation direction of the air flow in the conduit. The deflector element directs the air flow from the inlet of the conduit towards the acoustical foam. #CMT#USE : #/CMT# Ventilating system for evacuating a part of air circulated in a cab interior of a motor vehicle (claimed) i.e. commercial vehicle, during closing of an opening such as door or boot, of the vehicle. #CMT#ADVANTAGE : #/CMT# The deflector element directs the air flow from the inlet of the conduit towards the acoustical foam, thus reducing aeraulic noise generated by the circulation of the air flow, and hence increasing the comfort of passengers in the vehicle. The acoustical foam partially covers the internal wall of the conduit, thus reducing the cost of the system. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic sectional view of a ventilating system. 55 : Ventilating conduit 57 : Inlet 59 : Outlet 65 : Acoustical foam 67 : Deflector element 69 : Air flow.