PROBLEM TO BE SOLVED: To provide a wind channel structure for separating wind having a simple structure, effective for preventing the increase of the longitudinal length of the separation part in the direction of vehicle length, dispensing with a second fan and capable of effectively supplying the separation wind from a winnower fan also to the backside of a shake sorting mechanism.SOLUTION: At least a part of separation wind supplied from a winnower fan and flowing from the lower front side to the upper rear side along a clean grain flowing plate of a clean grain trough is guided backward by a window deflection plate under a shake sorting mechanism.COPYRIGHT: (C)2007,JPO&INPIT【課題】選別部の車輌前後方向長さが長大化することを防止し、且つ、セカンドファンを備えることなく、唐箕ファンからの選別風を揺動選別機構の車輌後方側部分へも効果的に供給し得る構造簡単な選別風の風路構造を提供する。【解決手段】唐箕ファンからの選別風のうち一番樋における一番流穀板に沿って前下方から後上方へ流れる選別風の少なくとも一部を、揺動選別機構の下側において後方へ案内する風向板を設ける。【選択図】図6
