Patent ID: 8087878

Claim:
A powerless diversion plate of a ceiling air-conditioning circulation machine, comprising: a) a lower frame having a rectangular positioning portion at the rim thereof, a plurality of air outflow/inflow channels being formed at the internal side of the rectangular positioning portion, a circular portion being positioned at the center thereof with a circular hole formed within the circular portion for the outflow/inflow of air; b) a cover positioned on the lower frame; c) a fan interposed between the lower frame and the cover for the outflow/inflow of the air from the air outflow/inflow channels as well as for the suction/delivery thereof through the circular hole inside, thereby creating an air-conditioning circulation machine is created, wherein a mounting seat is positioned within the circular hole and supported by a plurality of ribs, and a bearing block is provided at the center of the mounting seat for receiving a bearing; wherein a diversion disc is positioned within the circular hole, and the diversion disc includes a connection shaft at the center thereof and fits upwards into the connection shaft of the bearing block so as to be in connection with the bearing, thereby creating a free rotation of the connection shaft in the circular hole; and wherein the diversion disc includes a plurality of radial separation pieces, and a plurality of conic and ring-shaped diversion pieces are concentrically and outwardly positioned around the connection shaft, and the diversion disc is separated by the ring-shaped diversion pieces and the radial separation pieces to create a plurality of air inflow/outflow zones, and all of the ring-shaped diversion pieces at the bottom of the diversion disc are not positioned at the same height, but they have a downward protruding middle part and a staged structure at the rim thereof so as to form a -shape.