Suction-type double detection smoke-sensing fire detection system and alarm method thereof

Abstract

The invention relates to a suction-type double detection smoke-sensing fire detection system and an alarm method thereof. The system comprises multiple paths of sampling pipes with sampling holes and a host connected with the sampling pipes through a plurality of blast connectors, wherein the host comprises a fan case, a suction pump, a filter assembly, a laser detection chamber, a laser assembly, a control device and a plurality of gas sensors respectively arranged in the blast connectors. The suction-type double detection smoke-sensing fire detection system can rapidly determine the area where a fire occurs according to the aggregate result detected by the gas sensors and the laser assemblies, thereby fastening the response speed of alarm and ensuring high reliability. Compared with theprior art, the system does not need a branched pipe electric device and almost does not change the structure of the original system, thereby reducing the investment and operation cost of the device. In addition, the control method is simple and convenient.

Description

technical field [0001] The invention relates to an aspirating smoke detection system and an alarm method thereof, in particular to an aspirating double detection smoke detection system and an alarm method. Background technique [0002] At present, the aspirating smoke detection system, also known as air-sampling very early fire alarm system or air-sampling smoke detection alarm, is a widely used fire detection system. figure 1 It is a structural schematic diagram of an aspirating smoke detection system in the prior art. figure 2 for figure 1 Shown is a block diagram of the aspirating smoke detection system. Such as figure 1 , figure 2 As shown, this prior art aspirating smoke detection system includes multiple sampling pipes 1 with sampling holes and a host connected to these sampling pipes 1 through a plurality of air duct joints 2; wherein the host includes a fan Box 3, air suction pump 4, filter assembly 5, laser detection chamber 6, laser assembly 7, a plurality o...

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Problems solved by technology

[0003] It can be seen that, in order to confirm which sampling pipe 1 sucks the smoke particles, that is, from which protected area, the above-mentioned former air-breathing smoke detection system needs to be provided with a plurality of branch electric devices 8, while the latter air-breathing type The smoke detection system needs to be equipped with multiple suction pumps 4, which will not only complicate the structure and control process of the equipment, and thus increase the investment cost, but also the parameter of the smoke concentration value is detected twice by the laser component 7. Therefore, the detection result is relatively simple, so the reliability is poor

In addition, two detection processes are required, so the alarm time is long

In addition, once water vapor or air dust similar to smog particles is inhaled, the control device 9 may mistakenly send out a fire alarm signal because it cannot distinguish

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