Reverse cycle machine provided with a turbine

A reverse compression cycle machine comprising:

• an evaporator, a compressor and a condenser arranged in series each other along a path of a working fluid in the machine,
• further comprising a boundary layer turbine, placed between the condenser and the evaporator, said turbine comprising
• a set of power disks mounted on a rotating shaft which rotates inside a volume of a wheel chamber,
• an inlet opening for introducing a working fluid in a stator volume,
• an internal ring forming externally the stator volume with an external enclosure of the turbine and delimiting internally the wheel chamber,
• a stator nozzle provided in the internal ring, which accelerates the flow in a direction that is tangential to the power disks,
• a discharge passage of a working fluid provided in the external enclosure of the turbine,
• the wheel chamber being further delimited laterally by two sealing stator elements, and comprising at least one drain of a liquid fraction at least of said working fluid from the peripheral part of the power disks in order to avoid its concentration in a peripheral part of the volume of said wheel chamber,
• wherein said at least one drain is arranged in the sealing stator elements and provided on a wall of the wheel chamber.