JP-7138253-B2 - A smoke generator that heats by induction at the tip of a cigarette

Inventors

• 呉俊
• 楊強
• 尤俊衡
• 廖暁祥
• 朱東来
• 李廷華
• 李寿波
• 韓▲い▼
• 張霞
• 鞏効偉
• 趙偉
• 洪▲りゅう▼

Assignees

• 雲南中煙工業有限責任公司
• 雲南中煙工業有限責任公司

Dates

Publication Date

20220915

Application Date

20200928

Priority Date

20200928

Claims (2)

1. A smoking device for induction heating at the tip of a cigarette, comprising a hollow heating cup (2), a ferromagnetic heating element (5) and an induction coil (4); The hollow heating cup (2) comprises an upper hollow structure, a lower hollow structure and a partition plate between them, the upper hollow structure comprising a tobacco containing chamber (13) and the lower hollow structure containing a heating element containing chamber. the partition plate has a heat collection hole (21) that communicates the tobacco housing chamber (13) and the heating element housing chamber; The heating element (5) has a structure through which air can pass, and is arranged in the heating element housing chamber of the hollow heating cup (2), the induction coil (4) surrounds the outer wall of the heating element housing chamber of the hollow heating cup (2) and is connected to a power source, the heating element housing chamber communicates with the outside air ; Inside the upper hollow structure of the hollow heating cup (2), a hollow heat soaking member (3) having a top plate provided with a plurality of heat soaking holes (31) is arranged, and the hollow heat soaking member (3) is The internal hollow structure is a soaking chamber (32), the hollow soaking member (3) is disposed below the tobacco storage chamber (13), and the soaking chamber (32) is the soaking hole ( 31) to communicate with the tobacco containing chamber (13), and communicate with the heating element containing chamber through the heat collecting hole (21) .
2. The smoke generating device according to claim 1 , characterized in that said heat equalizing holes (31) are circumferentially evenly spaced in the top plate of said heat equalizing member (3).

Description

FIELD OF THE INVENTION The present invention belongs to the field of novel smoking articles, and more particularly to a smoking device for induction heating at the tip of a cigarette. As people become more health conscious, non-combustion heated cigarettes are more and more preferred by smokers because they are less harmful than traditional combustion cigarettes. At present, non-combustion heating tobacco heating methods include contact electric heating, non-contact electric heating, carbon heating and so on. Contact electric heating refers to the generation of smoke by directly contacting and heating tobacco, and directly contacting tobacco sticks or tobacco leaves with various heating elements such as tubes, pins or plates heated by electric current. Direct heating of tobacco sticks or tobacco leaves at a temperature below the burning point of tobacco volatilizes the aromatic and smoke components of tobacco to meet the smoking needs of smokers. The above method of heating tobacco sticks or tobacco leaves has the following problems. First, the directly contacting portion of the tobacco stick or tobacco leaf is sufficiently heated, but the portion remote from the heating element is not sufficiently heated, resulting in uneven heating effect across the circumference of the tobacco. Second, the volume of the heating element itself is small and the heat capacity is not high. Since the heating element is in direct contact with the tobacco, in order to ensure the heating effect of the part away from the heating element, the surface temperature of the heating element is usually 10-20 degrees higher than the optimum heating temperature, so that sufficient heating is achieved. ensure However, after the portion in contact with the heating element is heated several times, it may adhere to the heating element, causing problems such as generation of odor and difficulty in heating the next time of smoking. A conventional carbon-heated cigarette ignites a carbon rod attached to the tip of the cigarette to rapidly heat the air flowing through the carbon rod. Non-combustion heating of the tobacco leaves is achieved by heating the tobacco leaves as the heated air flows through the tobacco leaves within the tobacco under the negative pressure action of the smoker's inhalation. This heating method makes it possible to obtain the aroma of tobacco and suppress harmful substances such as tar and nicotine that are generated in large amounts by combustion. This carbon-heated cigarette has the characteristic of being less harmful than traditional cigarettes, but because the carbon rod is added to the tip of the cigarette, it makes the cigarette more difficult to produce, and only affects the production efficiency. However, it takes a long time to ignite the carbon rod, is difficult to ignite, and emits an odor when the carbon rod burns. Similarly, after the carbon rod has been ignited, it becomes difficult to control and heats the tobacco leaves even when not inhaled. In addition, since the base end of the carbon rod is in direct contact with or is relatively close to the tobacco leaves, there is a problem that a small amount of remaining tobacco leaves at the base end of the burned carbon rod is directly heated and critically burned. The conventional non-contact electric heating method uses a smoking tool that electrically heats introduced air, and is a direct electric heating method using a ring metal heating element, a flat metal heating element, or a combined flat metal heating element. Air flowing over the surface is heated and then introduced into the tobacco for "oven" omnidirectional heating. However, the above non-contact electric heating method has the following problems. First, the adjacent surfaces of the heating element must have enough space to insulate each other to prevent short circuits, so that only the air flowing over the surface of the heating element is heated sufficiently for current flow. Second, it is difficult to measure and control the temperature of the heating element. The temperature sensor cannot be attached directly to the heating element, but rather to the air flow path. , becomes difficult to control. The present invention is presented to solve the above problems. The present invention comprising a hollow heating cup 2, a ferromagnetic heating element 5 and an induction coil 4; The hollow heating cup 2 includes an upper hollow structure, a lower hollow structure, and a partition plate between them, the upper hollow structure including a tobacco storage chamber 13, the lower hollow structure including a heating element storage chamber, the partition plate containing tobacco. It has a heat collection hole 21 that communicates between the storage chamber 13 and the heating element storage chamber, The heating element 5 has a structure through which air can pass, and is arranged in the heating element housing chamber of the hollow heating cup 2, An induction coil 4 surrounds the outer wall of the heati