Patent ID: 7125219

Claim:
A high-pressure fan comprising an electric motor provided with a shaft that passes through said motor; first and second blade wheels made substantially of a carbon fibre-based composite material, arranged on both sides of the electric motor and mounted directly on said shaft; first and second fan housings surrounding the first and second blade wheels respectively; and an intermediate channel which connects a pressure opening of the first fan housing to a suction opening of the second fan housing; the intermediate channel being integrated into a base structure of the high-pressure fan and located substantially below said electric motor and said blade wheels, wherein said intermediate channel has a pressure opening, a straight channel section for levelling the flow, a length of the section corresponding substantially to a length of a long side of said pressure opening of said first fan housing, and further wherein a flow control plate is arranged at one end and in a middle portion of the straight channel section so as to turn flow of air substantially 90 degrees.