Low-oxygen heated smoking set

Abstract

A low-oxygen heated cigarette assembly including a low-oxygen heated smoking set B and a low-oxygen heated cigarette A. The low-oxygen heated smoking set B includes a heating section 4 and a smoke extraction member 2 detachably arranged in the heating section 4, the heating section 4 is provided with a cigarette receiving chamber 4-1, and the smoke extraction member 2 includes a hollow smoke extraction cone 2-1 and a smoke delivery tube 2-2. The low-oxygen heated cigarette A includes a tobacco section 1 and a filter mouthpiece section 3 detachably connected to each other, and upon inhalation, the tobacco section 1 and the filter mouthpiece section 3 of the low-oxygen heated cigarette A are removed and respectively assembled to the smoke extraction member 2 to form a segmented cigarette, and the tobacco section 1 of the segmented cigarette is inserted into the cigarette receiving chamber 4-1 to activate the heating element for smoking. The split-type cigarette design greatly 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 off, and keeps the smoking set clean.

Description

[Technical field]

[0001] The present invention relates to the field of non-combustion heated cigarettes, and more particularly to a low-oxygen heated cigarette assembly. [Background technology]

[0002] Traditional tobacco has a history of hundreds of years and has been incorporated into the lives of most smokers. In recent years, with the improvement of people's living standards, people have been paying more attention to issues such as smoking and health, and the harm caused by secondhand smoke, and the harm caused by traditional tobacco products has become more prominent. Meanwhile, with the implementation of the WHO Framework Convention on Tobacco Control, the ban on smoking has gradually expanded, especially in public places around the world, and the development environment for tobacco products has undergone significant and serious changes, and the structure of tobacco products is moving toward diversification and smoke-free development (Non-Patent Document 1). New tobacco products have gradually become a realistic option for major multinational tobacco companies to address the decline in sales of traditional tobacco products (Non-Patent Document 2).

[0003] At present, most non-combustion heated cigarettes adopt air as a smoke carrier to ensure that tobacco does not burn, and compared with traditional cigarettes, the applied heating temperature is usually low, generally not exceeding 300°C, and the aromatic components of new non-combustion heated cigarettes are difficult to fully release, and the amount of smoke is insufficient, so that the cigarettes are not easily accepted by traditional smokers. In addition, in order to ensure air circulation, the tobacco end of most non-combustion heated cigarettes has an open structure, that is, the tobacco fragments or reconstituted tobacco pieces are directly exposed to the outside or connected with the outside atmosphere through a certain air flow channel, and in the process of drawing out the cigarette, tobacco residues are easy to fall off and cause contamination to the smoking set, and as a result, such type of cigarette requires time to be spent to clean the smoking set after a period of use.

[0004] When a closed cigarette structure is adopted, the oxygen content decreases with the heating process (due to the replacement effect of fresh smoke on the internal atmosphere). At this time, even if the heating temperature is increased, no combustion phenomenon occurs, and at the same time, a situation occurs in which tobacco residue falls and contaminates the smoking set. However, since there is no carrier air flow flowing through the tobacco, the movement of cigarette smoke in a closed state becomes difficult.

[0005] The Coanda effect, also known as the wall effect, refers to the tendency of a fluid or air stream to leave its original flow direction and flow with a protruding surface due to surface friction when the fluid flows through the surface of an object. The Venturi effect refers to the low pressure that occurs in the vicinity of a fluid flowing at high speed, causing adsorption. Using the Coanda effect, air entering a small hole can flow along the surface of a hollow smoke extraction cone. Due to the presence of the Venturi effect, the gas flowing at high speed along the surface of the extraction cone creates a negative pressure area at the opening of the extraction cone. The Coanda effect and the Venturi effect can be used to create a concentration and pressure difference inside and outside the enclosed tobacco section, allowing fresh smoke produced by the tobacco section to be extracted using active diffusion of gas.

[0006] In order to satisfy the smoking habits of the general public regarding cigarettes, it is necessary to use a smoke extraction structure in each cigarette, which may significantly increase the production and manufacturing costs of the cigarettes. If the smoke extraction structure can be separated and reused, the production costs of the cigarettes can be effectively saved. [Prior art documents] [Non-patent literature]

[0007] [Non-Patent Document 1] Xiaobing Cheng, Baojiang Li, Yandong Han. The Development Status of New Tobacco in the World [ J ]. China Tobacco, 2014 (3): 38. [Non-Patent Document 2] Yali Liu, Jinbang Wang, Xinzhang Zhao, et al. Development Status and the Prospect of Heat-not-burn Tobacco Products [ J ]. Chinese Journal of Tobacco, 2018,24 (4) Summary of the Invention

[0008] The present invention provides a low-oxygen heated cigarette assembly including a low-oxygen heated smoking set, a low-oxygen heated cigarette, and a low-oxygen heated smoking method.

[0009] The low-oxygen heated smoking set comprises a heating section having a cigarette accommodating cavity formed therein, and further comprises a smoke extraction member that can be arranged separately from the heating section, the smoke extraction member comprising a hollow smoke extraction cone and a smoke delivery tube fixedly or removably inserted around the cone body of the smoke extraction cone, a tapered hole being provided on the cone top and / or side wall of the cone body, at least one through hole being provided on the peripheral side wall of the smoke delivery tube, and the axial distance of the at least one through hole from the bottom surface of the cone body is smaller than the axial distance of the tapered hole from the bottom surface of the cone body.

[0010] The smoke extraction cone is provided with an axially extending sleeve section at a lower end of said cone body and an axially extending enlarged inner diameter section at an end of the smoke delivery tube remote from said cone body.

[0011] Preferably, the heating element is disposed on the bottom surface and / or peripheral side walls of the cigarette-receiving cavity.

[0012] Preferably, the low-oxygen heated smoking set further comprises a cap, the cap and the heating section being directly and detachably connected to each other or detachably connected via a sealing ring, the cap being provided with a gradually expanding internal cavity in a truncated cone shape, the cone apex angle of the cone being less than or equal to 10 degrees, and one end of the cap having a smaller inner diameter being directly or indirectly and detachably connected to the heating section.

[0013] Preferably, the shape of said smoke extraction member is adapted to the interior of the cigarette receiving cavity in which it is received.

[0014] A low-oxygen heated cigarette comprises a tobacco section and a filter section which are detachably connected to each other, and one end face and / or peripheral side face of the tobacco section is sealed with an airtight foil paper.

[0015] One end of the unsealed tobacco section has a non-filled section extending axially, and the filter section has an exposed section not wrapped by tipping paper, the non-filled section and the exposed section being shaped to fit together such that the exposed section is inserted into the non-filled section when the tobacco section and the filter section are connected to each other. A low-oxygen heated cigarette assembly, a low-oxygen heated smoking set, and a low-oxygen heated cigarette.

[0016] The shape of the non-filled section of the tobacco section is also suitable for insertion into the sleeve section of the smoke extraction cone, and the shape of the exposed section of the filter tip section is also suitable for insertion into the expanded inner diameter section of the smoke delivery tube.

[0017] A method for smoking a low-oxygen heated cigarette using a low-oxygen heated cigarette assembly, during smoking, removing a tobacco section and a filter tip section of the low-oxygen heated cigarette, assembling the tobacco section and the filter tip section to a sleeve section and an inner diameter expansion section, respectively, at both ends of a smoke extraction member to form a sectioned cigarette, then removing a cap from the low-oxygen heated smoking set, inserting the tobacco section of the sectioned cigarette into a cigarette accommodating cavity of the heating section, replacing the cap, and activating a heating element arranged on a bottom surface and / or a peripheral side wall of the cigarette accommodating cavity for drawing.

[0018] The present invention has the following advantages: 1. By not using air as a carrier and using the Venturi effect and the Coanda effect to extract smoke, the oxygen content can be reduced, and therefore the heating temperature can be greatly increased, so that both reconstituted tobacco and common cigarette formulations can be utilized by such a type of cigarette, and the cost is reduced. 2. By using a sealing structure, tobacco residues do not fall, and there is no need to frequently clean the smoking set. 3. The release of aromatic components in tobacco is more sufficient, easy to release continuously, and the taste is closer to the taste of traditional cigarettes, which is easier to be accepted by traditional smokers. 4. The section-type cigarette structure design allows the smoke extraction section to be reused, and the production and manufacturing costs are greatly reduced. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is a schematic structural diagram of the low oxygen cigarette of the present invention when combined with a smoke extraction section. [Diagram 2] FIG. 2 is an axial cross-sectional view of the exploded structure before assembly in FIG. 1. In FIG. 1 and FIG. 2, 1 is the tobacco section, 2 is the smoke extraction section, and 3 is the filter tip section. [Diagram 3]3 is an axial cross-sectional view of a tobacco section. In Fig. 3, 1-1 is a tobacco section, 1-2 is an aluminum foil paper, 1-3 is a wrapping paper, and 1-4 is a non-filling section. [Figure 4] FIG. 2 is a schematic diagram of an exploded view of the smoke extraction section before assembly. [Diagram 5] 4 and 5 are axial cross-sectional views of the exploded structure of the smoke extraction section before assembly. In Fig. 4 and Fig. 5, 2-1 is the extraction cone, 2-2 is the smoke delivery tube, 2-1-1 is the base, 2-1-2 is the cone body, 2-1-3 is the boss, 2-1-4 is the tapered hole, 2-1-5 is the sleeve section, 2-2-1 is the slot, 2-2-2 is the through hole, and 2-2-3 is the groove. [Figure 6] 6 is a schematic structural diagram of a filter tip section. In FIG. 6, 3-1 is the exposed section, and 3-2 is the tip paper. [Figure 7] 7 is an axial cross-sectional view of the disassembled structure before assembly into a low-oxygen heated smoking set. In FIG. 7, 4 is a heating section, 4-1 is a cigarette-accommodating cavity, 5 is a sealing ring, 6 is a cap, and 6-1 is a gradually expanding internal cavity. [Figure 8] FIG. 1 is a schematic diagram of a low-oxygen heat-not-burn cigarette (i.e., the structure of the cigarette at the factory). [Figure 9] 1 is a schematic diagram of the shape and structure of a cigarette inserted into a heated smoking set when smoking. [Figure 10] FIG. 10 is a cross-sectional view of the structure of FIG. [Figure 11] 9, 10 and 11 are schematic diagrams of a smoking set during storage. In Fig. 9, Fig. 10 and Fig. 11, A is a low-oxygen heated cigarette, B is a heated smoking set, and 2 is a smoke extraction section. [Figure 12] FIG. 12 is an axial cross-sectional view of a hollow smoke extraction cone (with a tapered hole in the side wall of the extraction cone). In FIG. 12, 2-1-2 is the cone body and 2-1-4 is the tapered hole. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention will further describe the low-oxygen heated smoking set, the low-oxygen heated cigarette, and the low-oxygen heated cigarette assembly, and methods of using them, one by one, in conjunction with the accompanying drawings.

[0021] Example 1 As shown in Figures 7, 4, 5, 11 and 12, the low-oxygen heated smoking set comprises a heating section 4, in which a cigarette accommodating cavity 4-1 is disposed, and the low-oxygen heated smoking set also comprises a smoke extraction member 2 which can be disposed separately from the smoking set, the smoke extraction member 2 comprising a hollow smoke extraction cone 2-1 and a smoke delivery tube 2-2 fixedly or detachably inserted around a cone body 2-1-2 of the smoke extraction cone 2-1, a tapered hole 2-1-4 is provided on the cone top and / or side wall of the hollow smoke extraction cone 2-1, at least one through hole 2-2-2 is provided on the peripheral side wall of the smoke delivery tube 2-2, and the axial distance between the through hole 2-2-2 and the bottom surface of the cone body is smaller than the axial distance between the tapered hole 2-1-4 and the bottom surface of the cone body.

[0022] The lower end of the smoke extraction cone 2-1 is provided with an axially extending sleeve section 2-1-5, and one end of the smoke delivery tube 2-2 remote from the cone body is provided with an axially extending inner diameter enlarged section 2-2-3 (see FIG. 5). Preferably, the length of the sleeve section 2-1-5 is 3mm to 5mm, and the length of the inner diameter enlarged section 2-2-3 is equal to the length of the sleeve section 2-1-5.

[0023] The smoke extraction cone 2-1 and the smoke delivery tube 2-2 are hermetically connected via bosses 2-1-3 and slots 2-2-1 machined on the end faces of the extraction cone and the base of the smoke delivery tube (see FIG. 5).

[0024] The number of through holes 2-2-2 in the tube wall of the smoke delivery tube 2-2 is 2 to 10, the through holes are uniformly distributed along its circumference, and the diameter of each through hole is 0.5 mm to 2 mm, the diameter being inversely proportional to the number of the through holes, preferably the number of the through holes is 2 and the diameter of the through hole is 0.8 mm.

[0025] In the smoke extraction section, the ratio of the length of the extraction cone to the length of the delivery tube is in the range of 1:3 to 1:6, preferably 1:4.

[0026] The heating elements are disposed on the bottom surface and / or peripheral side walls of the cigarette-receiving cavity 4-1.

[0027] The low-oxygen heated smoking set also includes a cap 6, and the cap and the heating section 4 are directly or indirectly detachably connected to each other, or detachably connected through a sealing ring 5, and the cap 6 is provided with a gradually expanding inner cavity 6-1 formed in a truncated cone shape, the cone apex angle of which is 10 degrees or less, and the end of the cap 6 having a smaller inner diameter is directly or indirectly detachably connected to the heating section 4. The configuration of the cone apex angle of 10 degrees or less is to ensure that air can smoothly enter the smoke delivery tube through the through hole 2-2-2 on the tube wall of the smoke delivery tube, and to realize the smoke extraction effect. The heating cavity, the sealing ring, and the cap are coaxial, and the cap is connected to the heating cavity in a manner of threading, engagement, or magnetic attraction, and the sealing ring 5 is embedded in the heating cavity through a groove machined on the end face of the heating cavity.

[0028] The shape of the smoke extraction member 2 is suitable to be accommodated inside the cigarette-receiving cavity 4-1 of the heating section 4 (see FIG. 11).

[0029] Example 2 As shown in Figure 8, the low-oxygen heated cigarette comprises a tobacco section 1 and a filter tip section 3 which are detachably connected to each other, and one end face and / or peripheral side face of the tobacco section 1 is sealed by an airtight foil paper.

[0030] The unsealed end of the tobacco section 1 has an axially extending non-filled section 1-4 (see Figures 2 and 3), and the filter tip section 3 has an exposed section 3-1 (see Figure 6) that is not wrapped with tipping paper 3-2, and the shapes of the non-filled section and the exposed section fit together such that the exposed section 3-1 is inserted into the non-filled section 1-4 when the tobacco section 1 and the filter section 3 are connected to each other (see Figures 3, 6, 8).

[0031] Preferably, the tobacco section is a conventional tobacco or a reconstituted tobacco sheet base.

[0032] Preferably, the length of the unfilled section 1-4 of the tobacco section is between 3 mm and 5 mm, and the length of the exposed section 3-1 of the filter tip section is equal to the length of the unfilled section 1-4.

[0033] Example 3 The low-oxygen heated cigarette assembly includes a low-oxygen heated smoking set B and a low-oxygen heated cigarette A, as shown in Figs.

[0034] As can be seen from Figure 10 in combination with Figures 3, 5 and 6, the shape of the non-filled section 1-4 of the tobacco section 1 is also suitable for insertion 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 tip section 3 is also suitable for insertion into the expanded inner diameter section 2-2-3 of the smoke delivery tube 2-2.

[0035] Example 4 The smoking method using the above-mentioned low-oxygen heated cigarette assembly includes the following steps: When smoking, remove the tobacco section 1 and the filter tip section 3 of the low-oxygen heated cigarette, and respectively assemble them with the sleeve section 2-1-5 and the inner diameter expansion section 2-2-3 at both ends of the smoke extraction section 2 to form a sectioned cigarette (see Figures 1 and 2); then remove the cap 6 of the low-oxygen heated smoking set, insert the tobacco section 1 of the sectioned cigarette into the cigarette-accommodating cavity 4-1 of the heating section 4, put the cap 6 back on, and start the heating element arranged on the bottom surface and / or the peripheral side wall of the cigarette-accommodating cavity 4-1 for inhalation. Please refer to Figures 9 and 10 for specific usage states.

[0036] It should be further noted that the cigarette and heated smoking set of the present invention are arranged separately when shipped from the factory, the tobacco section 1 and the filter tip section 3 are respectively wrapped, and then connected and arranged together (see FIG. 8), the heated smoking set and the smoke extraction section 2 can be combined and used repeatedly (see FIG. 11), when smoking, the tobacco section 1 is first separated from the filter tip section 3, the tobacco section 1, the smoke extraction section 2, and the filter tip section 3 are inserted sequentially to form a sectioned cigarette to be smoked, and then the sectioned cigarette to be smoked is inserted into the heated smoking set (see FIG. 9 and FIG. 10), after smoking, the tobacco section 1 and the filter tip section 3 are discarded, and the heated smoking set and the smoke extraction section 2 can be reused. The structure of the low-oxygen heated smoking set during storage is shown in FIG. 11.

[0037] During smoking (inhalation), air first enters the space between the cap 6 and the section-type cigarette, then enters the interior of the smoke delivery tube through the through-holes 2-2-2 in the tube wall of the smoke delivery tube, and is sprayed onto the surface of the extraction cone. Due to the Venturi effect and the Coanda effect, negative pressure is formed at the position of the tapered hole 2-1-4, and by heating the tobacco section, positive pressure can be established in the tobacco section, and the existence of a pressure difference between the positive pressure and the negative pressure can cause smoke flow, so that the smoke flows out of the tapered hole 2-1-4 and enters the oral cavity through the smoke delivery tube cavity and the filter tip. The smoke delivery tube has the dual functions of smoke extraction and smoke cooling. The smoking resistance of the cigarette can be adjusted by changing the diameter and position of the through-holes 2-2-2 on the smoke delivery tube.

Claims

1. A low-oxygen heated smoking set comprising a heating section (4) having a cigarette-accommodating cavity (4-1) formed therein; The low-oxygen heated smoking set further comprises a smoke extraction member (2) arranged separately from the low-oxygen heated smoking set, The smoke extraction member (2) comprises a hollow smoke extraction cone (2-1) and a smoke delivery tube (2-2) fixedly or detachably inserted around the cone body (2-1-2) of the smoke extraction cone (2-1); A tapered hole (2-1-4) is provided on the cone top and / or side wall of the cone body (2-1-2), At least one through hole (2-2-2) is provided on the peripheral side wall of the smoke delivery tube (2-2); A low-oxygen heated smoking set, characterized in that the axial distance of the at least one through hole from the bottom surface of the cone body (2-1-2) is smaller than the axial distance of the tapered hole (2-1-4) from the bottom surface of the cone body (2-1-2).

2. The low-oxygen heated smoking set according to claim 1, characterized in that a lower end of the cone body of the smoke extraction cone (2-1) is provided with an axially extending sleeve section (2-1-5), and one end of the smoke delivery tube (2-2) remote from the cone body is provided with an axially extending inner diameter enlarged section (2-2-3).

3. The low-oxygen heated smoking set according to claim 1, characterized in that a heating element is provided on the bottom and / or the peripheral side wall of the cigarette-accommodating cavity (4-1).

4. The low-oxygen heated smoking set according to claim 1, further comprising a cap (6) which is directly and detachably connected to the heating section (4) or which is detachably connected to the heating section via a sealing ring (5), the cap (6) having a gradually expanding internal cavity (6-1) formed in a truncated cone shape, the cone apex angle of the truncated cone being 10 degrees or less, and one end of the cap (6) having a small inner diameter is directly or indirectly detachably connected to the heating section (4).

5. The low-oxygen heated smoking set according to claim 1, characterized in that the shape of the smoke extraction member (2) is suitable for the interior of the cigarette accommodating cavity (4-1) in which the smoke extraction member is accommodated.

6. A low-oxygen heated cigarette for use by being inserted into a low-oxygen heated smoking set according to any one of claims 1 to 5, comprising a tobacco section (1) and a filter tip section (3) detachably connected to each other, A low-oxygen heated cigarette, characterized in that one end face and / or peripheral side face of the tobacco section (1) is sealed with an airtight foil paper.

7. The low-oxygen heated cigarette of claim 6, characterized in that the unsealed end of the tobacco section (1) has a non-filled section (1-4) extending in the axial direction, the filter tip section (3) has an exposed section (3-1) that is not wrapped by tipping paper (3-2), and the shapes of the non-filled section and the exposed section are compatible with each other such that the exposed section (3-1) is inserted into the non-filled section (1-4) when the tobacco section (1) and the filter tip section (3) are connected to each other.

8. A low-oxygen heated cigarette assembly comprising: a low-oxygen heated smoking set (B) according to any one of claims 1 to 5; and a low-oxygen heated cigarette (A) according to claim 6 or 7.

9. A low-oxygen heated cigarette assembly as described in claim 8, characterized in that a lower end of the cone body of the smoke extraction cone (2-1) is provided with an axially extending sleeve section (2-1-5), an unsealed end of the tobacco section (1) has an axially extending non-filled section (1-4), the filter tip section (3) has an exposed section (3-1) not wrapped by tipping paper (3-2), and an end of the smoke delivery tube (2-2) remote from the cone body is provided with an axially extending enlarged inner diameter section (2-2-3), the shape of the non-filled section (1-4) of the tobacco section (1) is also suitable for being inserted 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 tip section (3) is also suitable for being inserted into the enlarged inner diameter section (2-2-3) of the smoke delivery tube (2-2).

10. Using the low-oxygen heated cigarette assembly according to claim 8, wherein a lower end of the cone body of the smoke extraction cone (2-1) is provided with an axially extending sleeve section (2-1-5), and one end of the smoke delivery tube (2-2) remote from the cone body is provided with an axially extending enlarged inner diameter section (2-2-3), During smoking, the tobacco section (1) and the filter tip section (3) of the low-oxygen heat-not-burn cigarette are removed, and the tobacco section and the filter tip section are respectively assembled to the sleeve section (2-1-5) and the inner diameter enlarged section (2-2-3) at both ends of the smoke extraction member (2) to form a sectioned cigarette; Next, the cap (6) of the low-oxygen heated smoking set is removed, and the tobacco section (1) of the sectioned cigarette is inserted into the cigarette-receiving cavity (4-1) of the heating section (4); A method for smoking a low-oxygen heated cigarette, characterized in that the cap (6) is replaced and the heating elements arranged on the bottom surface and / or the peripheral side wall of the cigarette-containing cavity (4-1) are activated for drawing.

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