About this 3D model

I made this for a 2nd nozzle of Mankati 3D printer which may have a problem with PVA Filament. The material is very delicate and will be blown off course by the fan and will harden before it can adhere to heat bed. So I divert the wind to cool the heat sink instead and not overheating PVA filament before extruding. *Updated : The left fan was uploaded.