Smoke generating device for induction heating in folding air passage

Abstract

The invention belongs to the field of novel cigarette smoking sets, and particularly relates to a smoke generating device for induction heating in a folding air passage. The smoke generating device comprises a cigarette leading-in pipe (1), an induction coil (3), a heating cup (5), a heating element (6) and a magnetic conductive sealing body (7). The cigarette leading-in pipe (1) is arranged at the upper end of the smoke generating device and is of a hollow pipe structure, an inner cavity is a gas mixing cavity (1D), the diameter of the gas mixing cavity (1D) is larger than that of the inner cavity of the heating cup (5), and a gap is formed between the inner wall of the cigarette leading-in pipe (1) and the upper end of the heating cup (5) and serves as a gas inlet channel (1A). Space folding with reduced space axial length is carried out on an original "heating body+cigarette", so that the axial length of the heating part of the smoking set is reduced. According to the invention, theheating element (6) is arranged in the air passage, and the air passage is folded back and forth, so that the length of the airflow passage is increased, and the axial length of the smoke generatingdevice is reduced.

Description

technical field [0001] The invention belongs to the field of novel cigarette smoking sets, and in particular relates to a smoking device which is heated by induction in a folded airway. Background technique [0002] With the improvement of people's health awareness, heat-not-burn cigarettes are more and more popular among smokers because they are less harmful than traditional burn-and-smoke cigarettes. At present, the heating methods of heat-not-burn cigarettes include: contact electric heating, non-contact electric heating, charcoal heating, etc. [0003] Contact electric heating refers to direct contact heating of cigarettes to obtain smoke, which uses various forms of heating appliances such as tubes, needles or plates for electric heating to directly contact with cigarettes or shredded tobacco, at a temperature lower than the ignition point of cigarettes. The cigarette or tobacco is directly contacted and baked to volatilize the aroma components and smoking components o...

AI Technical Summary

Problems solved by technology

[0005] 1. The shredded tobacco that is in direct contact with the cigarette or shredded tobacco can be fully toasted, while the shredded tobacco that is a little far from the heating element cannot be toasted sufficiently, and the toasting effect has certain differences on the circumferential cross section of the cigarette. Uniformity;

[0006] 2. The heating appliance itself is small in size and its heat capacity is not high

But at the same time, the problem is that after the tobacco in contact with the heating element is heated several times, the cured tobacco substance will stick to the heating element, which will bring peculiar smell or heating difficulty to the subsequent cigarettes.

Although this kind of charcoal-heated cigarette has the characteristics of lower harm than the existing ordinary cigarettes, the front end of the cigarette is attached with a carbon rod, which not only increases the difficulty of cigarette manufacturing, affects production efficiency, but also causes consumers to ignite the charcoal rod. It takes a long time, it is not easy to ignite, and the charcoal rod may have a certain odor after being ignited, or the ventilation of the smoking environment is not good, producing carbon monoxide or even unsafe risks, etc.

Similarly, it is difficult to control the charcoal stick after it is ignited, and there is also roasting of the shredded tobacco when it is not smoked.

And the end of the charcoal rod is also in direct contact with or relatively close to the shredded tobacco. Therefore, there are the following problems: a small amount of residual shredded tobacco is directly toasted or even critically baked at the end of the charcoal rod.

[0010] 1. Due to the energization of the adjacent surfaces of the heating element, there must be enough space for mutual insulation to prevent short circuits. Therefore, there is a problem that only the air flowing through the surface layer of the heating element can be fully heated;

[0011] 2. The problem of inconvenient temperature measurement and control of the heating element: because the temperature sensor cannot be directly installed on the heating element with interval requirements, and the air flow path is not only inconvenient for installation and lead wires, but also has the problem of air flow during suction and non-puffing. The problem that the relative temperature difference between flow and static is too large and difficult to control

In addition, when consumers use a general-purpose smoking set that is not produced for a certain type (or brand) of cigarettes, it will directly cause the end of the heating element to be less than 2mm from the support section of the filter rod of the cigarette, or even go deep into the support section of the filter rod. head phenomenon

Under the above circumstances, once the cigarette is normally heated and smoked, there is a high probability that the material of the support section will not withstand the high temperature of the heating body, and thermal shrinkage or thermal collapse will occur

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