Heating cigarette using Venturi type hollow filter stick

Abstract

The invention relates to a heating cigarette using a Venturi type hollow filter stick. The heating cigarette is composed of a tobacco substance and a hollow filter stick with a Venturi structure, thestructure of a hollow cavity is characterized in that the diameter of the cavity periodically and continuously changes along the axial direction of the hollow filter stick, and a series combination ofa group of thick cavities and a group of thin cavities which are connected in series is formed. When smoke generated by tobacco substance by high-temperature heating passes through the cavity, the flow speed of smoke fluid is changed due to the change of the cavity structure, the fluid state is forced to be changed into a turbulent flow from a laminar flow, so that the heat conduction efficiencyis improved, and thus the good heat transfer and cooling effect is achieved. Meanwhile, when smoke aerosol passes through the venturi type hollow filter stick, the aerosol collides, condenses and releases heat because the diameter of the inner cavity part is continuously and alternately changed, so that the cooling effect is further enhanced. The heating cigarette using the Venturi type hollow filter stick is sufficient in smoke amount, moderate in inlet temperature and good in smoking experience; and in terms of actual production, the processing technology is simple, and the quality control difficulty is small.

Description

technical field [0001] The invention belongs to the technical field of tobacco, in particular to a heating cigarette using a Venturi type hollow filter rod. Background technique [0002] The smoke of heated cigarettes is in the state of aerosol in the filter rod, and the aerosol particles are tiny liquid droplets. The temperature of the smoke has a direct impact on the particle size and composition of the aerosol, which in turn affects the amount of harmful components in the smoke and the sense of the cigarette. quality. The tobacco material in the heating cigarette is usually heated at 250-350°C in the heating appliance, and this temperature condition can fully release nicotine and some aromatic substances. However, the length of heated cigarettes is short, the cigarettes are surrounded by high-temperature appliances, the heat exchange efficiency is poor, the smoke temperature at the entrance is too high, the burning sensation and irritation increase significantly, and con...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heated cigarette using a Venturi-type hollow filter rod to solve the problem of complex production process of heated cigarettes, difficulty in quality control, high temperature at the inlet end of mainstream smoke, small amount of smoke, and poor smoking experience And other issues

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