An aspirating high-sensitivity smoke particle detector and its application

Abstract

The invention discloses an air-breathing high-sensitivity smoke particle detector and application thereof. The air-breathing high-sensitivity smoke particle detector and application thereof are characterized in that the smoke particle detector is arranged at the tail end of an air pumping pipeline in the monitored area, an air sample is drawn by the air pumping pipeline in a drive mode and filtered, and the smoke particles with the grain diameters of not more than 20 microns in the air sample drawn in the drive mode and filtered are tested through the detector according to a laser particle scattering method. According to the air-breathing high-sensitivity smoke particle detector and application thereof, infinitesimal smoke particles can be detected, and fire characteristic parameters can be effectively detected in the ultra early stage of fire; interferences of passive waiting and delaying and air motion of a protected area are overcome, and the influence on detecting precision due to smoke particle concentration dilution is eliminated; by high-sensitive composite monitoring on the fire characteristic parameters of smoke particle concentration, temperature and carbon monoxide gas in the air sample, the defect that smoke particles are monitored in a single mode through an existing air-breathing high-sensitivity smoke particle detecting system can be overcome, and therefore false alarm rate is effectively lowered.

Description

technical field [0001] The present invention relates to a fire detector and a detection method, more specifically, an ultra-early fire detection method applied in places with high cleanliness requirements such as a communication room, a control room and a chip manufacturing workshop. Background technique [0002] Fire detection is to timely and accurately judge the occurrence of fire and issue an alarm by monitoring some characteristic parameters and phenomena in the early stage of fire occurrence. In order to effectively suppress the occurrence of fires and reduce disaster losses, ultra-early fire alarms are required in places with high safety requirements such as communication equipment rooms, control rooms, and clean workshops for chip manufacturing. [0003] Fire detection technology essentially measures the physical characteristics of fire smoke concentration and temperature. Traditional smoke and temperature fire detection technologies have played an important role in ...

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Problems solved by technology

[0005] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides an air-breathing high-sensitivity smoke particle detector and its application. Through early detection of smoke particles with high sensitivity and accuracy, it can combine temperature and gas early judgment, overcome the deficiency of the existing aspirating fire detection system for single monitoring of smoke particles, and effectively reduce the rate of fire false alarms

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