초록 ▼

Movement of a fluid such as air is produced by rotating about a rotational axis a plurality of flow generating plates arranged in parallel with clearances therebetween. The clearances between adjacent flow generating plates for producing the movement of the fluid most effectively only by an adhesion

Movement of a fluid such as air is produced by rotating about a rotational axis a plurality of flow generating plates arranged in parallel with clearances therebetween. The clearances between adjacent flow generating plates for producing the movement of the fluid most effectively only by an adhesion of the fluid to the flow generating plates are set to be twice a value of a distance of an intermediate portion between the surface of the flow generating plate contacting a portion of the fluid in a close boundary layer which is rotated and moved substantially together with the flow generating plate and a remote fluid boundary layer which is substantially not influenced by centrifugal force due to the rotation of the flow generating plate. In the case of air, the clearances are about 0.5 mm. It is preferred to form the flow generating plate so as to have a waved surface for improving the flow generating efficiency.

대표청구항 ▼

A flow generating apparatus comprising: a casing; a plurality of circular flow generating plates disposed within said casing with clearances established between adjacent ones of said plates, said flow generating plates defining a rotational axis extending perpendicularly to each of the plates, each

A flow generating apparatus comprising: a casing; a plurality of circular flow generating plates disposed within said casing with clearances established between adjacent ones of said plates, said flow generating plates defining a rotational axis extending perpendicularly to each of the plates, each of said flow generating plates having a major surface for moving a fluid by only adhesion between the surface and the fluid in contact with the surface, said major surface defining waves having tops thereof extending longitudinally in generally radial directions of the plates, and each cross section of a portion of each of the plates taken through each of said waves perpendicular to the top thereof having a triangular shape; and means for rotating the flow generating plates in a direction of rotation about said rotational axis.