Waterproof exhaust fan box

• Main Authors: WU GAO, DONG YAOWEN
• Format: Patent
• Language: Chinese; English
• Published: 25.01.2022
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model relates to the technical field of fan manufacturing, and discloses a waterproof exhaust fan box which comprises a base, a centrifugal fan and an upper cover. The base comprises a bottom plate, a baffle and a net plate, the baffle comprises a plurality of side plates which are sequentially connected, the baffle is integrally formed, the bottom ends of the side plates and the bottom end of the net plate are fixed to the upper surface of the bottom plate through spot welding, a frame-shaped shell is defined by the baffle and the net plate, and a plurality of air outlet holes are formed in the net plate; the centrifugal fan is fixed to the bottom plate and located in the shell, and an air guide ring is arranged at an air inlet of the centrifugal fan. The upper cover is installed on the shell, an air inlet pipe is arranged above the upper cover, an air inlet of the centrifugal fan is communicated with the air inlet pipe through the air guide ring, the upper cover is provided with a rain blocking