Optical darkroom assembly for photoelectric smoke-sensing fire detector

A fire detector, photoelectric smoke technology, applied in spectrometry/spectrophotometry/monochromator, optical radiation measurement, material analysis by optical means, etc., can solve the problem of poor response consistency of detectors, anti-interference Problems such as poor ability and low sensitivity, to achieve the effect of good smoke response consistency, eliminating false alarm failures, and enhancing sensitivity

Pending Publication Date: 2020-09-25
JIUJIANG PEGASUS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of detector generally has the problems of poor response consistency, poor anti-interference ability and low sensitivity

Method used

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  • Optical darkroom assembly for photoelectric smoke-sensing fire detector
  • Optical darkroom assembly for photoelectric smoke-sensing fire detector
  • Optical darkroom assembly for photoelectric smoke-sensing fire detector

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0041] Such as Figure 1 to Figure 9 This optical darkroom assembly for the photoelectric smoke fire detector of the present invention shown, it comprises optical darkroom 10, dust-proof and anti-insect net 20 and optical smoke sensor, and optical darkroom 10 comprises a bottom plate 11, is installed on the bottom plate 11 Optical smoke sensor, light-shielding air guide grille 40, light-shielding grid 50 and light-shielding wall 60.

[0042]The light-shielding air-guiding grid 40 is uniformly rotated and arrayed around the base plate 11 around the axis of the bottom plate 11, and the light-shielding air-guiding grid 40 includes two first light-shielding air-guidi...

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PUM

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Abstract

The invention discloses an optical darkroom assembly comprising an optical darkroom, a dustproof insect-proof net and an optical smoke sensor. The optical darkroom comprises a bottom plate, and the optical smoke sensor, shading air guide gratings, a shading grating and a light blocking wall are installed on the bottom plate. The shading air guide gratings are evenly and rotationally arrayed aroundthe bottom plate with the axis of the bottom plate as the center, the shading air guide gratings comprise the first shading air guide grating and the second shading air guide grating which are the same in structure, and the first shading air guide grating and the second shading air guide grating are matched with each other to form an air guide channel. The first shading air guide grating is composed of a first shading plate and a second shading plate, and the first shading plate and the second shading plate are connected to form a herringbone grating. The optical darkroom assembly is good insmoke response consistency and high in dustproof and anti-interference capacity.

Description

technical field [0001] The invention belongs to the technical field of fire detection and alarm, and more specifically relates to an optical darkroom assembly for a photoelectric smoke detector. Background technique [0002] The optical sensor is the core device of the photoelectric smoke fire detector. It is an optical sensor device that responds to tiny solid or liquid smoke particles produced by combustion or pyrolysis through the principle of light scattering and refraction. The smoke particles of different particle sizes produced by various common combustibles at the initial stage of combustion have relatively consistent forward scattering light intensity. Therefore, most photoelectric smoke detectors on the market use the principle of forward scattered light, and most of them use single emission and single emission. The principle of reception. This type of detector generally has the problems of poor response consistency, poor anti-interference ability and low sensitiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/53G01N21/01G01N15/06G01J3/44G01J3/02
CPCG01N21/53G01N15/06G01N21/01G01J3/4412G01J3/0291G01N2015/0693G01N2021/0112
Inventor 何祥新
Owner JIUJIANG PEGASUS TECH CO LTD
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