Fire smoke-proof air curtain system with additional power

An air curtain and fire technology, which is applied in fire rescue, medical science, dentistry, etc., can solve problems such as gaining enough escape time, inevitable casualties, and short smoke blocking time, and achieves flexible and convenient partition setting, wide application range, and low investment. small effect

Inactive Publication Date: 2005-02-16
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 sm...

Method used

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  • Fire smoke-proof air curtain system with additional power
  • Fire smoke-proof air curtain system with additional power
  • Fire smoke-proof air curtain system with additional power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 , 2 shown.

[0020] An externally powered fire and smoke-proof air curtain system, including a fan 1, an air duct 2, an air valve 3, and a jet device 4. The fan 1 is installed at the entrance of the air duct 2 in the building, and the building in the smoke-proof zone 5 A jet device 4 is installed around the wall; the jet device 4 includes a static pressure diversion box 6 and a deflector 7, the static pressure diversion box 6 and the deflector 7 are installed in the jet box 8, and the jet port 9 is located in the jet box The bottom of 8 communicates with the outlet of the static pressure diversion box 6, and the inlet of the static pressure diversion box 6 is equipped with a damper 3, and the inlet end of the damper 3 communicates with the air duct 2; Wind, the sent wind passes through the air valve 3 and enters the static pressure guide box 6 in the jet device 4 to be equalized. 25-35° to the vertical line and oblique to the jet angle in the smoke-p...

Embodiment 2

[0026] Such as image 3 shown.

[0027] A fire and smoke-proof air curtain system with external power, comprising a fan 1, an air duct 2, a damper 3, and a jet device 4, the fan 1 is installed at the entrance of the air duct 2 in a building, and in the evacuation channel 5 (also can be A jet device 4 is installed on the top of the elevator or stair front chamber door); the jet device 4 includes a static pressure guide box 6 and a deflector 7, and the static pressure guide box 6 and the guide plate 7 are installed in the jet box 8, The jet port 9 is located at the bottom of the jet box 8 and communicates with the outlet of the static pressure diversion box 6, the inlet of the static pressure diversion box 6 is equipped with a damper 3, and the inlet end of the damper 3 communicates with the air duct 2; Air is supplied to the air duct 2, and the air sent passes through the air valve 3 and enters the static pressure diversion box 6 in the jet device 4 to be pressurized and equal...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): A62C2/10
Inventor 何嘉鹏王东方韩丽艳
Owner NANJING UNIV OF TECH
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