Multifunctional ventilation system of clothes inflaming retarding protection performance test evaluation laboratory

The invention relates to a multifunctional ventilation system of a clothes inflaming retarding protection performance test evaluation laboratory. The multifunctional ventilation system comprises an air supply system, an exhaust system and a control cabinet, wherein the air supply system and the exhaust system are arranged at the top of a flaming laboratory and are controlled by the control cabinet; the air supply system comprises a blower and two single-layer grid air vents; the two single-layer grid air vents are respectively arranged at the top and the bottom of the flaming laboratory; the blower is controlled by the control cabinet to transport fress air outside the flaming laboratory to the air channel of the air supply system; the fress air is transported by the two single-layer grid air vents arranged at the end of the air channel to the flaming laboratory; the exhaust system comprises an exhaust fan, a single-layer grid air vent, a filtering cabinet and a vertical shutter air outlet; the exhaust fan is controlled by the control cabinet to pump waste gas in the flaming laboratory into the air channel of the exhaust system through the single-layer grid air vent; and after the waste gas is filtered by the filtering cabinet arranged on the air channel, the waste gas is discharged by the vertical shutter air outlet arranged at the outlet of the air channel. The multifunctional ventilation system can be widely applied to clothes inflaming retarding protection performance tests.