FIELD: engine engineering. SUBSTANCE: exchanger has fan with a casing secured to the first face plate. The space of the casing is in communication with passageways of the rotor. The fan is rigidly secured to the end of the shaft from the side of the bearing unit in front of the first face plate. The rotor is provided with the central space. The turbine has a nozzle set. The wheel of the turbine is mounted inside the space of the rotor. The hub of the turbine wheel is provided with the central discharging passageway. The ratio of the flowing section of the nozzle set of the turbine to the total flowing section of the inlet ports for compressing gas is 0,3-0.7. EFFECT: improved design. 2 dwg
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