Air chamber structure for nondispersive spectrum gas analyser

Abstract

The invention belongs to the technical field of photoelectricity and micro electro mechanical systems, and relates to an air chamber structure, in particular to an air chamber structure of a nondispersive spectrum gas analyser. The air chamber structure comprises an air chamber inner shell, a filter core, an air chamber outer shell, a front cover, a rear cover, a transmitting end and a receiving end; the air chamber inner shell and the air chamber outer shell are of ring body structures, small holes are uniformly distributed on a circumference surface of the air chamber inner shell, and an inner diameter of the air chamber outer shell is larger than an outer diameter of the air chamber inner shell; through holes are opened on the front cover and the rear cover; and according to the novel straight air chamber structure provided by the invention, the affect on a calculating result of air concentration caused by pollution from extremely small number of dusts is greatly reduced, parallel light coincides with the empirical equation stated in the Beer-Lambert law, and the difficulty on norm algorithm of air concentration is reduced.

Description

technical field [0001] The invention belongs to the technical field of optoelectronics and micro-electromechanical systems, and relates to a gas chamber structure, in particular to a gas chamber structure for a non-dispersive spectral gas analyzer. Background technique [0002] For the detection of common toxic gases, especially inorganic toxic gases, special gas analyzers are generally used for detection, and gas analyzers based on the principle of spectral absorption are called spectroscopic gas analyzers here, which are a kind of gas analyzers with great development prospects. gas analyzer. Toxic and harmful gas analyzers based on spectroscopy Gas analyzers are currently mainly used in industries such as industry, agriculture, medical care, intelligent buildings, and analytical instruments for high-precision measurement of gas concentrations, such as supporting pollutant monitoring, automotive Exhaust gas analysis, gas and combustible gas detection, gas composition analy...

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Problems solved by technology

[0015] In order to solve the problems existing in the existing non-dispersive gas analyzer preparation technology based on the principle of spectral absorption, the complex process and high cost caused by the use of an ellipsoidal gas chamber structure, the measurement accuracy of the gas analyzer is easily affected by the environment, dustproof and moisture-proof The contradiction problem with response time is difficult to solve and other technical problems. The present invention proposes a gas chamber structure for non-dispersive gas analyzers, with a view to improving the design and production of non-dispersive gas analyzers based on the principle of spectral absorption. , and then applied in the field of online monitoring of toxic and harmful gases

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