Daimler Chrysler Ag

Mercedes-Benz Aktiengesellschaft

Juergen Maue

Juergen Wertenbach

Joachim Currle

Frank Fruehauf

Guenter Abersfelder

A heating and/or air conditioning system for an interior of a vehicle has a central heating and/or cooling device and a decentralized air-conveying device which includes a plurality of air-conveying units arranged locally in the vehicle interior. In order to permit good regulation of the heating and/or air conditioning system and efficient air conditioning, respective air-conveying units of the decentralized air-conveying device are arranged in a plurality of subspaces of the vehicle interior for circulating air in the respective subspaces.

Heating and/or air conditioning system having a decentralized air-conveying device

A method for operating a refrigerating unit for the air conditioning of vehicles and a refrigerating unit for carrying out the method, are provided. In order to make available refrigerating capacity, on the high pressure side of a vapor compression circuit, a pressure is produced which, with respect to the critical pressure of a refrigerant circulating in the circuit, is supercritical and, at the same time, on the low pressure side of the circuit, a subcritical pressure is achieved. In this arrangement, the circuit contains a compressor, a gas cooler, a throttle device and an evaporator which are series-connected and form an integral, closed circuit. The refrigerant, which is cooled on the low pressure side, is supplied, via the evaporator, with thermal energy, and refrigerating energy is removed. In order to increase the efficiency and the comfort of the system to such an extent that an air conditioning system operating with this unit is suitable for use in a vehicle, the refrigerant mass flow in the circuit is varied by regulating the refrigerant flow rate in the compressor.

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Weilheim/Teck, Germany

Juergen Maue