Fire smoke-proof air curtain system with additional power

Abstract

The invention discloses an effective smoke-stop of fire hazard air screen system with applied power in order to prevent smoke or set up smoke-stop partition which utilizes the properties of air screen effectively preventing smoke and integrates the characters of building provided with fan drive. It includes fan drive, ducts, valves, jet equipment. The fan drive is installed in the front of building duct entrance and the jet equipment is installed on smoke-stop point; the jet equipment includes jet box, the inner backflow box with static pressure and guide plate, the jet orifice lies on the bottom of jet box and is connected with the outlet of the backflow box with static pressure, the valves are installed on entrance of the backflow box and connected with ducts; the fan drive blows out to the ducts, after the wind from valves to the backflow box with static pressure is equably pressed, it is ejected over the guide plate through the jet entrance at 15-20m / s velocity at 25-35o angle with droop line and inclining smoke zone at 2.5-4.5cm thickness from the top down, then forms air screen so as to prevent fire hazard smoke from diffusing to safety zone.

Description

technical field [0001] The invention relates to a building fire and smoke prevention system, in particular to an external power fire and smoke prevention air curtain system which utilizes an air curtain to realize the smoke prevention function. Background technique [0002] Existing buildings with air ducts are generally equipped with fans at the entrance of the air ducts, and the fans supply air to the air ducts, and then force ventilation to the room through a device connected to the air ducts, so as to improve the indoor ventilation effect. Its function is relatively single. Especially in some large public places such as subways, underground shopping malls, shopping malls and dance halls with a business area of ​​more than 500 square meters, forced ventilation is more necessary. [0003] Due to the large area and large flow of people in public places, the consequences of a fire are unpredictable. In order to gain time for escape and reduce the occurrence of casualties ca...

AI Technical Summary

Problems solved by technology

However, because the height of the smoke-blocking wall is very limited, generally not more than 1 meter, the smoke will quickly spread to the adjacent area after accumulating quickly, so the smoke-blocking time is very short, and the escape time for the escapees is also very short. It is easy to cause confusion during evacuation, making casualties inevitable

Therefore, the smoke-blocking hanging wall cannot fundamentally solve the smoke-blocking problem in large-space public places, and it is difficult to win enough escape time for the escapees. At present, there is no better smoke-blocking effect and partition for smoke-blocking The corresponding measures and equipment came out to win the precious time for the timely evacuation of the personnel in the

Images