Fan unit and air conditioner for machine room

The utility model discloses a fan unit and an air conditioner for a machine room. The fan unit comprises an outer fan box and a fan mounted in the outer fan box, wherein the outer fan box comprises a bottom plate, a top plate and a plurality of screen plates connected between the bottom plate and the top plate; the bottom plate, the top plate and the screen plates enclose an accommodating space used for accommodating the fan therein; the bottom plate is positioned in the air inlet direction of the fan; the screen plates are positioned in the air outlet direction of the fan; an air inlet hole is formed in the position, corresponding to the air inlet direction of the fan, on the bottom plate; air outlet holes are formed by meshes in the screen plate. According to the fan unit, the fan is mounted in the outer fan box to form a modular fan unit. The fan unit is applied to the air conditioner for the machine room and is convenient to assemble and disassemble.