Radial fan blower, for a motor vehicle air conditioning system, has a truncated cone structure at the housing under side with the hub pitched to match the cone mantle line

摘要

The structure of a radial fan blower (1), for a motor vehicle air conditioning system, has a truncated cone construction at the under side (14) of the housing (1.1). The covering surface (18) of the truncated cone, parallel to the base surface (19) of the lower housing, forms a recessed frame edge for the cylindrical surface coaxial to the drive axis (2.1). The vane ring of the drum rotor (3) has a complementary grip in the recessed covering surface so that the pitch of the hub (4) matches the mantle line (20) of the truncated cone.