Device for generating a temperature controlled air flow for the passenger compartment of a motor vehicle and heating and/or air conditioning apparatus with such a device

The air flow generator, comprising separators (22, 26) for a main air flow (10), producing a secondary cold flow (38) and a flow (40) to be warmed by a heater (20) to make a secondary warm flow (42), has a modular assembly enclosed in the housing (4) of a heating/air conditioning system (2). It consists of a supporting frame with a separating plate dividing it into hot (18) and cold (16) air channels, with the separators (22, 26) creating individually regulated air flows.