Low-oxygen heating-type smoking set

Abstract

A low-oxygen heating-type cigarette assembly, comprising a low-oxygen heating-type smoking set (B) and a low-oxygen heating-type cigarette (A). The low-oxygen heating-type smoking set (B) comprises a heating section (4) and a smoke extracting member (2) detachably arranged with the heating section (4), wherein the heating section (4) is provided with a cigarette receiving chamber (4-1), and the smoke extracting member (2) comprises a hollow smoke extracting cone (2-1) and a smoke transmission tube (2-2). The low-oxygen heating-type cigarette (A) comprises a tobacco section (1) and a filter mouthpiece section (3) detachably connected to each other; during inhalation, the tobacco section (1) and the filter mouthpiece section (3) of the low-oxygen heating-type cigarette (A) are detached, and are respectively assembled with the smoke extracting member (2) to form a segmented cigarette; the tobacco section (1) of the segmented cigarette is inserted into the cigarette receiving chamber (4-1) to start up a heating element for smoking. The split-type cigarette design significantly simplifies the structure of the cigarette, keeps the tobacco section (1) in a low- oxygen environment, increases the heating temperature, prevents tobacco residue from falling out, and keeps the smoking set clean.

Description

An oxygen-deficient heating smoking device Technical Field

[0001] The invention belongs to the field of heat-not-burn cigarettes, and in particular relates to an oxygen-deficient heating type cigarette assembly. Background Art

[0002] Traditional tobacco has a history of hundreds of years and has become part of the lives of most smokers. In recent years, with the improvement of people's living standards, issues such as smoking and health, and the harm of secondhand smoke have become increasingly important to people, and the harm caused by traditional tobacco products has become increasingly prominent. At the same time, with the implementation of the WHO Framework Convention on Tobacco Control, especially the gradual expansion of the scope of smoking bans in public places in various countries around the world, the development environment of tobacco products has undergone major and profound changes. The structure of tobacco products is accelerating its adjustment towards diversification and smoke-free development (Cheng Xiaobing, Li Baojiang, Han Yandong. Development Status of New Tobacco in the World [J]. China Tobacco, 2014 (3): 38.). New tobacco products have gradually become a realistic choice for major multinational tobacco companies to cope with the declining sales of traditional tobacco products (Liu Yali, Wang Jinbang, Zheng Xinzhang, et al. Development Status and Prospects of Heat-Not-Burn Tobacco Products [J]. Journal of Chinese Tobacco Society, 2018, 24 (4)).

[0003] Currently, the vast majority of heat-not-burn (HNB) cigarettes use air as a smoke carrier. To ensure the tobacco does not burn, the applied heating temperature is typically low, generally not exceeding 300°C. Compared to traditional cigarettes, the tobacco flavoring components of these new HNB cigarettes are difficult to fully release, resulting in insufficient smoke volume. Therefore, these new HNB cigarettes are less accepted by traditional smokers. Furthermore, to ensure air circulation, the tobacco end of most HNB cigarettes is open, with the tobacco or reconstituted tobacco directly exposed or connected to the outside atmosphere through a specific airflow channel. When removing the cartridge after smoking, tobacco residue may fall, easily contaminating smoking utensils. Therefore, these tobacco products require time to clean after a period of use.

[0004] If a sealed cigarette is used, the oxygen content decreases during the heating process (due to the displacement of the internal atmosphere by fresh smoke). Even if the heating temperature is increased, combustion will not occur, and tobacco residue will not fall and contaminate the smoking device. However, since there is no carrier gas flowing through the tobacco, smoke migration in a sealed cigarette becomes difficult.

[0005] The Coanda effect, also known as the wall adhesion or Coanda effect, refers to the tendency of a fluid, water or air, to deviate from its original flow direction and instead flow along the protruding surface due to surface friction when flowing over the surface of an object. The Venturi phenomenon refers to the generation of low pressure near a high-speed flowing fluid, which produces an adsorption effect. The Coanda effect allows air entering the small hole to flow along the surface of the smoke extraction cone; due to the Venturi phenomenon, the high-speed flow of gas along the surface of the extraction cone creates a negative pressure area at the extraction cone mouth. The Coanda and Venturi effects can be used to create concentration and pressure differences downstream of the closed tobacco section, thereby extracting the fresh smoke generated by the closed tobacco section.

[0006] In order to meet the public's smoking habits, a smoke extraction structure must be used in every cigarette, which will greatly increase the production cost of the cigarette. If the smoke extraction structure is separated and reused, the production cost of the cigarette can be effectively reduced.

[0007] Summary of the Invention

[0008] The present invention provides an oxygen-deficient heating type cigarette assembly, comprising an oxygen-deficient heating type smoking device, an oxygen-deficient heating type cigarette and an oxygen-deficient heating type smoking method.

[0009] An oxygen-deficient heating smoking device, comprising a heating section with a cigarette accommodating cavity therein, wherein the oxygen-deficient heating smoking device further comprises a smoke extraction component detachably provided therewith, the smoke extraction component comprising a hollow smoke extraction cone and a smoke transmission tube fixedly or detachably sleeved on the outer periphery of the smoke extraction cone, the hollow smoke extraction cone having a conical hole on its top and / or side wall, the smoke transmission tube having at least one through hole on its circumferential side wall, the through hole having an axial distance from the bottom surface of the cone being less than the axial distance from the conical hole to the bottom surface of the cone.

[0010] The bottom surface end of the fume extraction cone is provided with an axially extending sleeve section; the end of the fume transmission pipe away from the cone is provided with an axially extending inner diameter enlarged section.

[0011] Preferably, a heating element is provided on the bottom surface and / or the circumferential side wall of the cigarette accommodating cavity.

[0012] Preferably, the oxygen-deficient heating tobacco device of the present invention further includes a cap, which is directly detachably connected to the heating section or detachably connected via a sealing ring. The cap has a gradually expanding inner cavity, which is in the shape of a truncated cone, and the cone apex angle is not greater than 10 degrees. The end with a smaller inner diameter of the cap is directly or indirectly detachably connected to the heating section.

[0013] Preferably, the shape of the smoke extraction member is suitable for being accommodated in the cigarette accommodating cavity.

[0014] An oxygen-deficient heating type cigarette comprises a tobacco segment and a filter segment which are detachably connected to each other, wherein one end face and / or a circumferential side face of the tobacco segment is sealed by airtight foil paper.

[0015] The unsealed end of the tobacco segment has an axially extending unfilled section, and the filter segment has an exposed section not wrapped by tipping paper. The unfilled and exposed sections are shaped to fit together so that when the tobacco segment and filter segment are connected together, the exposed section is inserted into the unfilled section. An oxygen-depleted heated cigarette assembly, the aforementioned oxygen-depleted heated smoking device, and an oxygen-depleted heated cigarette.

[0016] The shape of the unfilled section of the tobacco segment is also suitable for plugging into the sleeve section of the smoke extraction cone, and the shape of the exposed section of the filter segment is also suitable for plugging into the inner diameter expanded section of the smoke transmission tube.

[0017] A smoking method using an oxygen-deficient heated cigarette assembly. When smoking, the tobacco segment and filter segment of the oxygen-deficient heated cigarette are disassembled and respectively assembled into the sleeve segment and the inner diameter enlarged segment at both ends of the smoke extraction component to form a segmented cigarette; then the cap of the oxygen-deficient heated smoking device is removed, the tobacco segment of the segmented cigarette is inserted into the cigarette accommodating cavity of the heating segment, the cap is replaced, and the heating elements arranged on the bottom surface and / or circumferential side wall of the cigarette accommodating cavity are activated for smoking.

[0018] The advantages of this invention are: 1. Instead of using air as a carrier, the Venturi effect and the Coanda effect are used to extract smoke, which can reduce the oxygen content and thus greatly increase the heating temperature. This also allows this type of cigarette to use both reconstituted tobacco leaves and ordinary cigarette formulas, reducing costs; 2. A closed structure is adopted, so there will be no tobacco residue falling and there is no need to frequently clean the smoking device; 3. The aroma components in the tobacco are released more fully and are easy to release continuously. The taste is closer to traditional tobacco and is more easily accepted by traditional smokers; 4. The segmented cigarette structure design makes the smoke extraction section reusable, greatly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of the oxygen-depleted cigarette of the present invention when combined with a smoke extraction section,

[0020] FIG2 is an axial cross-sectional view of the explosion structure to be assembled in FIG1 ,

[0021] In Figures 1 and 2: 1. Tobacco section, 2. Smoke extraction section, 3. Filter section.

[0022] Figure 3 is an axial cross-section of a tobacco segment.

[0023] In Figure 3: 1-1, tobacco, 1-2, aluminum foil, 1-3, cigarette paper, 1-4, unfilled section.

[0024] Figure 4 Schematic diagram of the explosion structure of the smoke extraction section to be assembled,

[0025] Figure 5 is an axial cross-section of the explosion structure to be assembled in the smoke extraction section.

[0026] In Figures 4 and 5: 2-1, extraction cone, 2-2, flue gas transmission pipe, 2-1-1, base, 2-1-2, cone, 2-1-3, boss, 2-1-4, tapered hole, 2-1-5, sleeve section; 2-2-1, slot, 2-2-2, through hole, 2-2-3, groove.

[0027] Figure 6 is a schematic diagram of the filter segment structure,

[0028] In Figure 6: 3-1, exposed section, 3-2, tipping paper.

[0029] Figure 7 is an axial cross-sectional view of the exploded structure of the oxygen-deficient heating smoking device to be assembled.

[0030] In Figure 7: 4, heating section, 4-1 cigarette accommodating chamber; 5, sealing ring, 6, cover cap, 6-1 gradually expanding inner cavity.

[0031] Figure 8 is a schematic diagram of an oxygen-deficient heated cigarette (i.e., the structure of the cigarette when it leaves the factory).

[0032] FIG9 is a schematic diagram of the external structure of a cigarette inserted into a heated smoking device for smoking.

[0033] FIG10 is a cross-sectional view of the structure of FIG9 .

[0034] Figure 11 is a schematic diagram of the smoking device structure when stored.

[0035] In Figures 9, 10, and 11: A. oxygen-deficient heated cigarette, B. heated smoking device, 2. smoke extraction section.

[0036] FIG12 is an axial cross-sectional view of a hollow flue gas extraction cone (a conical hole is provided on the side wall of the extraction cone).

[0037] In Figure 12: 2-1-2, cone, 2-1-4, cone hole

[0038] Best Mode for Carrying Out the Invention

[0039] The present invention further describes the oxygen-deficient heated smoking device, the oxygen-deficient heated cigarette, the oxygen-deficient heated cigarette assembly and the method of use one by one in conjunction with the accompanying drawings.

[0040] Example 1

[0041] A low-oxygen heating smoking device, as shown in Figures 7, 4, 5, 11 and 12: it includes a heating section (4), the heating section (4) has a cigarette accommodating chamber (4-1), wherein the low-oxygen heating smoking device also includes a smoke extraction member (2) detachably arranged therewith, the smoke extraction member (2) including a hollow smoke extraction cone (2-1) and a smoke transmission tube (2-2) fixedly or detachably sleeved on the outer periphery of a cone (2-1-2) of the smoke extraction cone (2-1), the cone top and / or side wall of the hollow smoke extraction cone (2-1) having a cone hole (2-1-4), the circumferential side wall of the smoke transmission tube (2-2) having at least one through hole (2-2-2), the axial distance between the through hole (2-2-2) and the bottom surface of the cone being smaller than the axial distance between the cone hole (2-1-4) and the bottom surface of the cone.

[0042] The bottom surface end of the smoke extraction cone (2-1) is provided with an axially extending sleeve section (2-1-5); the end of the smoke transmission pipe (2-2) away from the cone has an axially extending inner diameter enlarged section.

[0043] (2-2-3) (See FIG5 ) Preferably, the length of the sleeve section (2-1-5) is 3-5 mm, and the length of the inner diameter enlarged section (2-2-3) is equal to the length of the sleeve section (2-1-5).

[0044] The smoke extraction cone (2-1) and the smoke transmission pipe (2-2) are sealed and connected via a boss (2-1-3) and a slot (2-2-1) machined on the extraction cone base and the end surface of the smoke transmission pipe (see FIG. 5 ).

[0045] The number of through holes (2-2-2) on the wall of the smoke transmission pipe (2-2) is 2-10 and is evenly distributed along the circumference. The diameter of the through holes is 0.5-2 mm, and the diameter is inversely proportional to the number of holes. Preferably, the number of through holes is 2 and the diameter is 0.8 mm.

[0046] In the fume extraction section, the ratio between the length of the extraction cone and the length of the transmission pipe ranges from 1:3 to 1:6, preferably 1:4.

[0047] A heating element is provided on the bottom surface and / or the circumferential side wall of the cigarette accommodating cavity (4-1).

[0048] The oxygen-deficient heating cigarette device of the present invention also includes a cap (6), which is directly detachably connected to the heating section (4) or detachably connected via a sealing ring (5). The cap (6) has a gradually expanding inner cavity (6-1) in the shape of a truncated cone with a cone apex angle of no more than 10 degrees. The end with a smaller inner diameter of the cap (6) is directly or indirectly detachably connected to the heating section (4). The setting of the cone apex angle of no more than 10° is to ensure that air can smoothly pass through the through hole (2-2-2) on the wall of the smoke transmission pipe and enter the pipe to achieve smoke extraction. The heating chamber, the sealing ring and the cap are coaxial, and the cap is connected to the heating chamber by thread, snap or magnetic attraction; the sealing ring (5) is embedded in the heating chamber through a groove machined on the end face of the heating chamber.

[0049] The shape of the smoke extraction member (2) is suitable for being received inside the cigarette receiving cavity (4-1) of the heating section (4) (see FIG. 11 ).

[0050] Example 2

[0051] An oxygen-deficient heating cigarette, as shown in FIG8 , comprises a tobacco segment (1) and a filter segment (3) detachably connected to each other, wherein one end face and / or circumferential side face of the tobacco segment (1) is sealed by airtight foil.

[0052] The unsealed end of the tobacco segment (1) has an axially extending unfilled segment (1-4) (see Figures 2 and 3), and the filter segment (3) has an exposed segment (3-1) not wrapped by the tipping paper (3-2) (see Figure 6). The shapes of the unfilled segment and the exposed segment match each other, so that when the tobacco segment (1) and the filter segment (3) are connected together, the exposed segment (3-1) is inserted into the unfilled segment (1-4) (see Figures 3, 6, and 8).

[0053] Preferably, the tobacco segment is traditional tobacco or reconstituted tobacco leaf base.

[0054] Preferably, the length of the unfilled section (1-4) of the tobacco segment is 3-5 mm, and the length of the exposed section (3-1) of the filter segment is equal to the length of the unfilled section (1-4).

[0055] Example 3

[0056] An oxygen-deficient heating type cigarette assembly, as shown in Figures 9 and 10, includes an oxygen-deficient heating type smoking device (B) and an oxygen-deficient heating type cigarette (A).

[0057] It can be clearly seen from Figure 10 in combination with Figures 3, 5 and 6 that the shape of the unfilled section (1-4) of the tobacco segment (1) is also suitable for plugging into the sleeve section (2-1-5) of the smoke extraction cone (2-1), and the shape of the exposed section (3-1) of the filter segment (3) is also suitable for plugging into the inner diameter enlarged section (2-2-3) of the smoke transmission pipe (2-2).

[0058] Example 4

[0059] The smoking method using the above-mentioned oxygen-deficient heating type cigarette assembly is as follows: when smoking, the tobacco segment (1) and the filter segment (3) of the oxygen-deficient heating type cigarette are disassembled and respectively assembled into the sleeve segment (2-1-5) and the inner diameter expansion segment (2-2-3) at both ends of the smoke extraction section (2) to form a segmented cigarette (see Figures 1 and 2); then the cap (6) of the oxygen-deficient heating type smoking device is removed, the tobacco segment (1) of the segmented cigarette is inserted into the cigarette receiving cavity (4-1) of the heating section (4), the cap (6) is replaced, and the heating element provided on the bottom surface and / or the circumferential side wall of the cigarette receiving cavity (4-1) is activated to smoke. The specific usage state is shown in Figures 9 and 10.

[0060] It should also be noted that the cigarettes and the heating device of the present invention are placed separately when leaving the factory, wherein the tobacco segment (1) and the filter segment (3) are respectively wrapped and connected and placed together (see FIG8 ), and the heating device and the smoke extraction segment (2) are combined and placed together and can be reused (see FIG11 ); when smoking, the tobacco segment (1) and the filter segment (3) are first separated, and the tobacco segment (1), the smoke extraction segment (2), and the filter segment (3) are sequentially plugged into a segmented cigarette to be smoked, which is then inserted into the heating device (see FIG9 and FIG10 ); after smoking, the tobacco segment (1) and the filter segment (3) are discarded, and the heating device and the smoke extraction segment (2) can be reused. The structure of the oxygen-deficient heating device when stored is shown in FIG11 .

[0061] During inhalation, air first enters the space between the cap 6 and the segmented cigarette, then enters the smoke transmission tube through the through-holes (2-2-2) in the smoke transmission tube wall and is ejected onto the surface of the extraction cone. Due to the Venturi effect and the Coanda effect, negative pressure is generated at the cone hole (2-1-4). The heating of the tobacco segment creates positive pressure in the tobacco rod portion. The positive and negative pressure differential causes smoke to flow, so that smoke flows out of the cone hole (2-1-4) through the smoke transmission tube lumen and filter and enters the oral cavity. The smoke transmission tube has the dual functions of smoke extraction and smoke cooling. The draw resistance of the cigarette can be adjusted by changing the diameter and position of the through-holes (2-2-2) in the smoke transmission tube.

Claims

1. An oxygen-deficient heating smoking device, comprising a heating section (4), wherein the heating section (4) has a cigarette accommodating cavity (4-1), characterized in that: The oxygen-deficient heating smoking device also includes a smoke extraction component (2) that can be separated from the smoke extraction component (2), and the smoke extraction component (2) includes a hollow smoke extraction cone (2-1) and a smoke transmission tube (2-2) fixedly or detachably sleeved on the outer periphery of the cone (2-1-2) of the smoke extraction cone (2-1), the cone top and / or the side wall of the cone (2-1-2) are provided with a cone hole (2-1-4), and the circumferential side wall of the smoke transmission tube (2-2) is provided with at least one through hole (2-2-2), and the axial distance between the through hole (2-2-2) and the bottom surface of the cone (2-1-2) is smaller than the axial distance between the cone hole (2-1-4) and the bottom surface of the cone (2-1-2).

2. The oxygen-deficient heating smoking device according to claim 1, characterized in that: The bottom surface end of the smoke extraction cone (2-1) is provided with an axially extending sleeve section (2-1-5); the end of the smoke transmission pipe (2-2) away from the cone has an axially extending inner diameter enlarged section (2-2-3).

3. The oxygen-deficient heating smoking device according to claim 1, characterized in that: A heating element is provided on the bottom surface and / or the circumferential side wall of the cigarette accommodating cavity (4-1).

4. The oxygen-deficient heating smoking device according to claim 1, characterized in that: The invention also includes a cap (6) which is directly and detachably connected to the heating section (4) or is detachably connected via a sealing ring (5); the cap (6) has a gradually expanding inner cavity (6-1) which is in the shape of a truncated cone with a cone apex angle of no more than 10 degrees; the end with a smaller inner diameter of the cap (6) is directly or indirectly detachably connected to the heating section (4).

5. The oxygen-deficient heating smoking device according to claim 1, characterized in that: The shape of the smoke extraction member (2) is suitable for being accommodated in the cigarette accommodating cavity (4-1).

6. An oxygen-deficient heating cigarette, characterized in that: It comprises a tobacco segment (1) and a filter segment (3) which are detachably connected to each other, wherein one end face and / or circumferential side face of the tobacco segment (1) is sealed by an airtight foil.

7. The oxygen-deficient heating cigarette according to claim 6, characterized in that: The unsealed end of the tobacco segment (1) has an axially extending unfilled segment (1-4), and the filter segment (3) has an exposed segment (3-1) not wrapped by the tipping paper (3-2). The shapes of the unfilled segment and the exposed segment match each other, so that when the tobacco segment (1) and the filter segment (3) are connected together, the exposed segment (3-1) is inserted into the unfilled segment (1-4).

8. An oxygen-depleted heating cigarette assembly, comprising the oxygen-depleted heating smoking device (B) according to any one of claims 1 to 5 and the oxygen-depleted heating cigarette (A) according to any one of claims 6 to 7.

9. The oxygen-deficient heating type cigarette assembly according to claim 8, characterized in that: The shape of the unfilled section (1-1) of the tobacco section (1) is also suitable for plugging into the sleeve section (2-1-5) of the smoke extraction cone (2-1), and the shape of the exposed section (3-1) of the filter section (3) is also suitable for plugging into the inner diameter enlarged section (2-2-3) of the smoke transmission tube (2-2).

10. An oxygen-deficient heating smoking method, characterized in that: It uses the oxygen-deficient heating cigarette assembly described in claim 8. When smoking, the tobacco segment (1) and the filter segment (3) of the oxygen-deficient heating cigarette are disassembled and respectively assembled into the sleeve segment (2-1-5) and the inner diameter expansion segment (2-2-3) at both ends of the smoke extraction component (2) to form a segmented cigarette; then the cap (6) of the oxygen-deficient heating cigarette device is removed, the tobacco segment (1) of the segmented cigarette is inserted into the cigarette holding cavity (4-1) of the heating segment (4), the cap (6) is put back, and the heating elements arranged on the bottom surface and / or circumferential side wall of the cigarette holding cavity (4-1) are started for smoking.

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