Method for predicting air flow of cigarette combustion cone point based on detection pressure drop

Abstract

The invention discloses a method for predicting the air flow of a cigarette combustion cone point based on detection pressure drop. The mouth-by-mouth pressure drop during cigarette sample suction ismeasured through a pressure drop detecting device; the air flow of the combustion cone point during cigarette sample suction is measured through a flow detecting device; a regression equation of a prediction model is obtained with the pressure drop as the independent variable x and the cigarette combustion cone point frontal air flow y; the mouth-by-mouth pressure drop during cigarette suction ismeasured and substituted into the prediction model so as to obtain the air flow of the cigarette combustion cone point. By means of the method, the measuring experimental process of the air flow of the cigarette combustion cone point is simplified; a detecting method of the air flow of the combustion cone point is supplemented, and by means of the method, unstable factors during combustion cone flow measuring can be reduced; the data processing process of a traditional combustion cone flow measuring method is simplified. The basic data and theoretical basis are provided for guiding the analysis of a cigarette combustion and suction mechanism and the design of a cigarette material, and the method has quite high practicability and wide applicability.

Description

technical field [0001] The invention relates to a method for predicting the air flow at the cigarette burning cone end, in particular to a method for predicting the air flow at the cigarette burning cone end based on the detected pressure drop. Background technique [0002] With the in-depth development of tobacco industry technology, various indicators of combustion characteristics of cigarettes during smoking have received more and more attention. The gas flow when the cigarette burns mainly comes from three areas: the burning cone end, the shredded cigarette section and the filter tip section. Vigorous combustion produces a large amount of mainstream smoke, and the negative pressure generated by the suction, the air permeability of the cigarette paper and the ventilation of the filter tip make the air penetrate from the outside of the paper, constituting the total gas flow inside the cigarette. The gas flow rate of each part of the cigarette not only affects the concentr...

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Problems solved by technology

[0005] Foreign Colard et al. built an experimental device for measuring the pressure drop change during cigarette burning, and compared and analyzed the values ​​predicted by the model with the experimentally measured values. Some scholars also established mathematical models to predict the pressure drop during cigarette burning. Cigarette pressure drop, however, there are few studies on the relationship between pressure drop and flow field distribution, a complex system of change

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