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Firefighting smoke exhaust roof axial flow fan

A technology for axial flow fans and fire protection, which is applied in ventilation systems, mechanical equipment, airflow control components, etc. It can solve the problems of long paths, airflow that cannot be discharged straight upwards, and low exhaust efficiency.

Active Publication Date: 2020-10-27
ZHEJIANG HUICHUANG FAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The setting of the hood prevents the airflow generated by the fan from being discharged upwards in a straight line, resulting in the following disadvantages: first, the airflow generated by the fan impacts on the hood, and may flow back into the air cylinder, forming backflow; second, the airflow generated by the fan passes through the side of the hood The air outlet structure can be exhausted, the air outlet path is circuitous, the air outlet path is long, and the exhaust efficiency is low

Method used

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  • Firefighting smoke exhaust roof axial flow fan
  • Firefighting smoke exhaust roof axial flow fan
  • Firefighting smoke exhaust roof axial flow fan

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] combine Figure 1 to Figure 3 , an axial flow fan for fire-fighting smoke exhaust roof, including an air cylinder 10 and a motor 20, a fan blade 21 is installed on the motor shaft, the motor shaft 22 is connected with a threaded part 31, the threaded part is screwed with a puncture needle 30, and the puncture needle is matched with a guide cylinder 32 Among them, the guide cylinder is connected with the blower; the disc-shaped air bag 40 is arranged above the puncture needle, and the edge of the disc-shaped air bag contacts with the blower.

[0019] The bottom of the air duct 10 is provided with a base 14, and the base is installed on the wind shaft 50 of the roof, and the air duct is transparent up and down and is vertical. The motor 20 is connected to the inner wall of the blower through the second connecting rod 23 . The motor is connected to the main control board, the main control board is connected to the household power supply, and the smoke detector is electric...

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Abstract

The invention discloses a firefighting smoke exhaust roof axial flow fan. The firefighting smoke exhaust roof axial flow fan comprises an air barrel and a motor. Fan blades are mounted on a motor shaft, the motor shaft is connected with a threaded part, the threaded part is screwed to a puncture needle, the puncture needle cooperates into a guide barrel, and the guide barrel is connected with theair barrel. A disc-shaped airbag is arranged above the puncture needle, the edge of the disc-shaped airbag tightly makes contact with the air barrel, rainwater falling along an opening in the top of the air barrel is blocked by the disc-shaped airbag, and the waterproof effect is achieved. When fire happens, the motor drives the threaded part while driving the fan blades, the threaded part drivesthe puncture needle to move upwards, the airbag is punctured through the puncture needle, the airbag does not block the air barrel any more, and indoor smoke is exhausted through airflow generated bythe fan blades. The airbag is adopted to achieve the waterproof effect, when the fire happens, the airbag is punctured through the motor supposed to rotate, and the smoke is rapidly exhausted throughthe fan.

Description

technical field [0001] The invention relates to fire fighting equipment, in particular to a smoke exhaust fan installed on the roof. Background technique [0002] The axial flow fan installed on the roof is used for fire and smoke exhaust. In order to prevent rain, a wind cap is provided above the axial flow fan. For example, the patent document CN 105351228 A relates to "an axial flow low-noise roof fan", which discloses a wind cap arranged on the top of the air duct. The setting of the hood prevents the airflow generated by the fan from being discharged upwards in a straight line, resulting in the following disadvantages: first, the airflow generated by the fan impacts on the hood, and may flow back into the air cylinder, forming backflow; second, the airflow generated by the fan passes through the side of the hood The air outlet structure can be exhausted, the path of the airflow is circuitous, the path of the airflow is long, and the exhaust efficiency is low. Content...

Claims

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Application Information

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IPC IPC(8): F24F7/06F24F13/02F24F13/14F04D25/12
CPCF24F7/065F24F13/02F24F13/14F04D25/12
Inventor 许惠中夏淇淇许柏其陈怡露黄国标冯天琪
Owner ZHEJIANG HUICHUANG FAN
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