Air blower unit for a motor vehicle heating and/or air conditioning system, and such a system having two air blower units

摘要

A heating and/or air conditioning installation for a motor vehicle is of the kind having two air blower units, each supplied with air through a respective air admission housing, and each having a volute casing arranged to deliver air into a common distribution housing. P PThe air blower unit comprises a connection member having an input edge which is adapted to be fitted to the outlet aperture of the air admission housing in either one of two different positions; and a casing having a lateral wall defining a volute chamber within the casing. The latter also has a delivery or outlet orifice, and two opposed abutment surfaces, either of which can be fitted to an output edge of the connection member, so as to give two different mounting positions. The blower unit further includes a motor support member having a further abutment edge which is adapted to fit to whichever one of the abutment edges of the casing is not fitted to the connection member; and a motorized blower comprising a motor secured to the motor support member and carrying a blower rotor which rotates within the casing.