Device and method for capturing mainstream smoke from a smoking machine

Abstract

The invention relates to the field of smoke analysis and in particular relates to a main stream smoke trapping device and a main stream smoke trapping method for a smoking machine. The main stream smoke trapping device for the smoking machine comprises an enclosure, a fairing, a laminar flow core, a fan and a trapper, wherein an air inlet and an air outlet are formed in the enclosure; an air duct is formed between the air inlet and the air outlet; the fairing is arranged at the air inlet; the laminar flow core is arranged on the air duct; the fan is arranged at the air outlet; and the trapper is used for trapping main stream smoke substances generated by to-be-detected samples. According to the main stream smoke trapping device for the smoking machine, the consistency of the previous and later air speed in the cigarette combustion process can be effectively controlled, so that uncertain influence of the air speed on the suction effect is avoided. Therefore, the stability of the experimental data is high, data comparison in different labs is facilitated, and the repeated accuracy and reproduction accuracy of the test are improved. Meanwhile, the relative deviation allowed by the national standard can be reduced, and the detected data has scientificity, authority and fairness.

Description

technical field [0001] The invention relates to the field of smoke analysis, in particular to a device and method for collecting mainstream smoke of a smoking machine with controllable wind speed. Background technique [0002] Cigarettes and cigars produce a variety of harmful components during the smoking process. At present, the method used in the analysis and research of harmful components in smoke in the tobacco industry is mainly to smoke through smoking machines. The smoking machines being used at home and abroad include two categories: linear smoking machines and rotary smoking machines. [0003] Existing smoke trapping methods for linear smoking machines and rotary smoking machines also comply with the ISO 3308-2012 standard, but in comparative tests of the same sample, not only between these two smoking machines, but also in different laboratories Among the same smoking machines, the test results of harmful components in smoke (total particulate matter and carbon m...

AI Technical Summary

Problems solved by technology

[0004] The ISO 3308-2012 standard only stipulates the measurement of fixed points for the measurement of wind speed, and does not stipulate the wind speed in the combustion process.

Moreover, in the existing linear smoking machines and rotary smoking machines, the measurement points of their wind speeds are all fixed points on the axial positions of cigarettes and cigars, which cannot control the consistency of wind speeds in the whole burning process of cigarettes and cigars.

The actual measurement results of the wind speed of the existing smoking machine show that according to the standard requirements, the wind speed is guaranteed to be 200mm / s. 80-100mm / s; the wind speed at the measurement point is different, and the wind speed difference between the front and back sections will also change accordingly; it can be seen that when using the existing smoking machine to capture the smoke, the wind speed has an uncertain influence on the measurement results of the smoke capture Relatively large, resulting in poor consistency of test results

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