In-building access path installation type smoke control system

An in-building access path installation type smoke control system, which is fixed in an in-building access path and supports an entrance/exit door so that the entrance/exit door is openable and closable, the in-building access path installation type smoke control system comprising:

• a frame casing having an intake port and a discharge port;
• a frame nozzle installed in the frame casing and configured to spray water supplied from the outside;
• and
• a door frame having a negative pressure inducer configured to allow water sprayed from the frame nozzle to pass therethrough, generate negative pressure on the basis of the Venturi effect while the water passes therethrough, suck gas at the periphery of the frame casing through the intake port, mix the sucked gas with water, and move the gas mixed with the water downward toward the discharge port.

An in-building access path installation type smoke control system comprising:

• a mixing housing installed at an upper side of a fire shutter in an in-building access path and having an intake port and a discharge port;
• a plurality of nozzles embedded in the mixing housing and configured to spray water supplied from the outside;
• and
• a negative pressure inducer installed below the nozzle and configured to allow water sprayed from the nozzle to pass therethrough, generate negative pressure on the basis of the Venturi effect while the water passes therethrough, suck gas at the periphery of the mixing housing through the intake port, mix the sucked gas with water, and discharge the gas mixed with the water.