Air-conditionning device and method for operating the same

The air-conditioner (1) has a group of several air-conditioning modules (4), which are exchangeable arranged in a holder device (52) and a casing for a refrigerant circuit. The refrigerant circuit has an electric compressor (54), a throttle unit and two separate air guide channels (15,15'), each with a fan. A vaporiser (55) is arranged in the first air guide channel and a condenser (56) is arranged in the second air guide channel. Wall openings (10,10') form the entrances and exits of the air guide channels. The first air guide channels of all of the air-conditioning modules are arranged in parallel between a mixing air channel for surrounding air (11,12) and a supply channel for conditioned air (13) to be supplied to the passenger compartment (2). Connection openings (14,14') can be closed by sliding a casing (7) in the holding device and are provided with an energy supply (5) and a control device (6), to selectively operate the number of air-conditioning modules. An electric connection device (8) is provided at the casing.