Dryer air pipe

At least one air outlet hole is formed in the top of the air pipe, an air inlet channel is formed in the middle of the air pipe, at least one supporting rib is further arranged on the top face of the air pipe, at least one flow guide channel is arranged on the outer side wall of the air pipe or in the air pipe, and the flow guide channel is independent of the air inlet channel of the air pipe. The convection drying device can prevent hot air generated when the air pipe works from flowing backwards, and can improve convection drying efficiency at the same time. 本实用新型公开了一种烘干机风管，风管的顶部设有至少一个出风孔，风管中部形成进风通道，风管的顶面上还设有至少一支撑筋，风管的外侧壁或风管内部设有至少一导流通道，导流通道与风管的进风通道相独立。本实用新型可防止风管工作时产生热风倒灌，同时可提高对流烘干效率。