Air inlet case for heating, ventilating and/or air conditioning installation of motor vehicle`s cab interior, has air filter with parallelepiped shape placed in path of air flow upstream of air outlet in region of case traversed by axis

摘要

The case (10) has an external air inlet (16), a re-circulated air inlet (18), an air outlet (26), and a drum shutter (28) rotatably mounted in the case around a rotational axis (AA) to control air flow from the inlet (16) and/or the inlet (18) reaching the outlet (26). An electrostatic type air filter (40), with a parallelepiped shape, is placed in the path of the air flow upstream of the outlet (26) and is disposed in the region of the case which is traversed by the axis.