PURPOSE: To provide a fan mill structure of a combine harvester improved in grading performances by connecting a suction flow passage respectively communicating with suction ports on the right and left sides of a Sirocco fan to an air intake part. ;CONSTITUTION: This fan mill structure of a combine harvester is provided by installing a Sirocco fan 14 as a fan mill in a fan casing 35 directing to the right and left width directions of the shaft line and connecting a suction flow passage 38 respectively communicating with suction ports (14a) and (14b) on the right and left sides of the Sirocco fan 14 to an air intake part provided on at least either of the lateral parts on the right and left sides of the machine body. Furthermore, the suction flow rate of the suction ports (14a) and (14b) on the right and left sides of the Sirocco fan 14 is preferably set so as to increase in the suction port located on the side opposite to a grain culm transverse feeder installed at a position on one lateral side of the machine body.;COPYRIGHT: (C)1995,JPO
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