Positive and negative pressure combined fresh air management device in electric power foundation pit

The utility model provides a positive and negative pressure combined fresh air management device in an electric power foundation pit, and belongs to the technical field of exhaust engineering. A fresh air management device combining positive pressure and negative pressure in an electric power foundation pit comprises a pipe network, a fan set and a fresh air management module, the fan set and the fresh air management module are arranged on the pipe network, the fan set comprises a positive pressure fan and a negative pressure fan, and the pipe network comprises a submerged air supply module connected with the positive pressure fan and a distributed exhaust pipe connected with the negative pressure fan. The fresh air management device combining the positive pressure and the negative pressure in the electric power foundation pit is energy-saving, environment-friendly, rapid in laying, intelligent in monitoring and convenient to manage. 本发明提供了一种电力基坑内正负压相结合的新风管理装置，属于排风工程技术领域。一种电力基坑内正负压相结合的新风管理装置，包括管网，所述管网上设置的风机组、