Ventilation formula underground pedestrain passage

The utility model discloses a ventilation formula underground pedestrain passage, including the passageway main part, sending exhaust device and power supply unit, the both ends of passageway main part are the access & exit, send exhaust device to link to each other with power supply unit, send exhaust device to install in the passageway main part, send exhaust device inside intercommunication with the passageway main part, send exhaust device to include fan and ventilation pipe, the fan links to each other with power supply unit, and the fan is installed in the entrance of ventilation pipe, and the ventilation pipe is fixed in the outside of passageway main part, sets up the vent of a plurality of intercommunication passageway main parts on the ventilation pipe, send exhaust device still to include the steam filter, the entry of steam filter links to each other with the fan, the export and the ventilation pipe intercommunication of steam filter. The beneficial effects of the utility model are that: setting u