Heating device for heat-not-burn cigarette

Abstract

The invention discloses a heating device for heat-not-burn cigarette. The device comprises a shell, wherein a cylinder body with openings at two ends is arranged in the shell, and a gap is arranged between the outer wall of the cylinder body and the inner wall of the shell; a cigarette accommodating part which is arranged in the shell and is used for accommodating a heating non-combustible cigarette; wherein the top end of the cigarette accommodating part is open and the bottom end is closed; a combustion chamber which is arranged in the cylinder body and is used for heating the heating non-combustion cigarette through the cigarette accommodating part; wherein the combustion chamber comprises a fuel channel used for providing fuel and a combustion air channel used for providing combustionair, the first end of the fuel channel and the bottom end of the cigarette containing part are arranged in a spaced mode, the second end of the fuel channel is communicated with the outside, and the combustion air channel is communicated with the outside; and a smoke exhaust channel which is arranged in the gap and used for exhausting tail gas generated after the fuel is combusted; wherein the first end of the smoke exhaust channel communicates with the interior of the cylinder body, and the second end of the smoke exhaust channel communicates with the outside. Long-time stable heating can beachieved, and the heat exchange efficiency is high.

Description

technical field [0001] The invention relates to a heating device for heating non-burning cigarettes, belonging to the technical field of smoking utensils. Background technique [0002] According to statistics, between 1990 and 2015, the global smoking rate dropped from 29.4% to 15.3%, but due to population growth, the number of smokers increased from 870 million to 930 million during the same period. Currently, 80% of the main smoking population comes from low- and middle-income countries. With the continuous improvement of income level, people's awareness of health is getting stronger and stronger, the decline of smoking population and smoking rate is the general trend, and the sales volume of traditional cigarettes has declined significantly. In the past ten years, new tobacco products have gradually become an important development direction and research and development hotspot of tobacco products due to their significant advantages in reducing the release of harmful comp...

AI Technical Summary

Problems solved by technology

Although the electric heating method has the advantages of safety, stability, and portability, it also has many disadvantages: such as short working hours (one charge can only smoke one short cigarette), and it is not suitable for people who work outdoors for a long time; The area of ​​the central heating rod or heating plate is small, and the heat exchange intensity is small, so that the diameter of the cigarette cannot be too large, thereby limiting the amount of tobacco that can be smoked, and is not suitable for users with large demand

However, this heating method has the following disadvantages: (1) due to the small heat exchange area of ​​the heating tube or heating rod or heating sheet, the temperature rise time is long, so the heating rate is low; (2) due to the heating tube or heating rod or heating The chip is often in an environment of alternating cold and hot, which leads to a reduction in service life; (3) the heating tube or heating rod or heating chip is easily broken due to the plugging and unplugging of the cigarette branch, thus reducing the reliability of use

Furthermore, since the central heating method cannot make full use of the waste heat of the flue gas, the exhaust gas temperature is higher and the thermal efficiency of the system is reduced

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