WO2021218025A1

WO2021218025A1 - Plug-in-type low-oxygen heating smoking set and cigarette system including same, and smoking method

Info

Publication number: WO2021218025A1
Application number: PCT/CN2020/118761
Authority: WO
Inventors: 张柯; 尚善斋; 李斌; 雷萍; 王爽; 吴俊�; 王乐; 廖思尧; 王兵; 韩敬美; 张齐; 李志强; 邓楠; 廖晓祥; 汤建国
Original assignee: 云南中烟工业有限责任公司; 中国烟草总公司郑州烟草研究院
Priority date: 2020-04-28
Filing date: 2020-09-29
Publication date: 2021-11-04
Also published as: EP4005422A1; EP4005422A4; EP4005422B1

Abstract

A plug-in-type low-oxygen heating smoking set and a cigarette system including same, and a smoking method. The smoking set includes a smoke extraction element (6), which can be arranged to be split from the smoking set or is fixed inside a cigarette accommodating cavity (3). The smoke extraction element (6) comprises a hollow smoke extraction cone (6-1) and a main stream smoke forming pipe (6-2) fixedly or detachably sleeved on a cone body (6-1-1) of the smoke extraction cone (6-1). The main stream smoke forming pipe (6-2) is provided with an internal cavity (6-2-1), the outline of the cavity (6-2-1) being of a Venturi pipe type structure. According to the plug-in type low-oxygen heating smoking set and the cigarette system including same, and the smoking method, the smoke extraction effect is enhanced, fresh smoke generated in a closed space is extracted while the oxygen content of a tobacco section can be reduced, and a requirement for smoke concentration can be met.

Description

Plug-in type oxygen-deficient heating smoking device, cigarette system and smoking method containing the same

Technical field

The invention belongs to the field of heating non-combustion cigarette smoking sets, and in particular relates to a plug-in oxygen-deficient heating smoking set, a cigarette system and a smoking method containing the same.

Background technique

Traditional tobacco has a history of hundreds of years and has been integrated into the lives of most smokers. In recent years, with the improvement of people's living standards, people have paid more and more attention to the problems of smoking and health, the harm of second-hand smoke, 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 smoking bans in public places around the world, the development environment of tobacco products has undergone major and profound changes, and the structure of tobacco products is moving towards diversification. And the development direction of smoke-free is speeding up adjustment. New tobacco products have gradually become a realistic choice for major multinational tobacco companies to cope with the declining sales of traditional tobacco products.

At present, most heated cigarettes use air as the carrier of smoke. In order to ensure that the tobacco does not burn, the heating temperature applied is usually lower, generally not exceeding 300°C. Compared with traditional cigarettes, the tobacco of new heating non-burning cigarettes It is difficult to completely release the aroma components and the amount of smoke is insufficient. Therefore, such cigarettes are more difficult to be accepted by traditional smokers. In addition, in order to ensure air circulation, the tobacco end of most heat-not-burn cigarettes has an open structure, that is, shredded tobacco or reconstituted cigarettes are directly exposed or connected to the outside atmosphere through a certain airflow channel. In the process of discharging the smoke bomb, the tobacco residue will fall off, which is easy to cause pollution to the smoking set. Therefore, this type of tobacco needs time to clean the smoking set after using it for a period of time.

If a closed cigarette structure is used, the oxygen content will decrease with the heating process (this is due to the replacement of the internal atmosphere by the formed fresh smoke). At this time, even if the heating temperature is increased, combustion will not occur , At the same time, there will be no tobacco residue falling and contaminating smoking utensils. However, since there is no carrier gas flowing through the tobacco, the migration of the smoke from the closed cigarette will become difficult.

If a device for extracting smoke from closed cigarettes is designed, the above problems will be solved.

Summary of the invention

In order to solve the above-mentioned problems, the present invention is proposed.

The first aspect of the present invention provides a plug-in type oxygen-deficient heating smoking device, which includes a cigarette accommodating cavity 3, and further includes a smoke extraction element that can be separated from the smoking device or fixed in the cigarette accommodating cavity 3 6;

The smoke extraction element 6 includes a hollow smoke extraction cone 6-1 and a mainstream smoke formation tube 6 fixed or detachably sleeved on the outer periphery of the cone 6-1 of the smoke extraction cone 6-1. -2;

The hollow part of the hollow flue gas extraction cone 6-1 has a tapered structure, and the cone top and/or the side wall of the hollow flue gas extraction cone 6-1 are provided with cone holes 6-1-2, The number of the cone holes 6-1-2 is at least one;

The mainstream smoke forming tube 6-2 has an internal cavity 6-2-1, and the outline of the cavity 6-2-1 is a venturi structure, that is, the cavity 6-2-1 has a gradually The shrinking cavity, the escalating cavity, and the tapering cavity and the expanding cavity are connected by a cylindrical cavity with a small inner diameter, and the mainstream smoke forms the circumferential side of the tube 6-2 The wall has at least one through hole 6-2-3, the through hole 6-2-3 is located upstream of the tapered cavity of the mainstream smoke forming pipe 6-2, and the through hole 6-2-3 is away from the cone The axial distance of the bottom surface of the body 6-1-1 is smaller than the axial distance of the cone hole 6-1-2 from the bottom surface of the cone 6-1-1,

The inner diameter of the cigarette accommodating cavity 3 is larger than the outer diameter of the smoke extraction element 6;

Between the inner wall of the tapered cavity of the mainstream smoke forming tube 6-2 and the outer wall of the cone 6-1-1 is an airflow channel 6-3 that is in airflow communication with the cavity 6-2-1 .

Preferably, an annular boss 6-2-2 is provided on the circumferential side wall of the tapered cavity of the mainstream smoke forming tube 6-2 at a position corresponding to the cone hole 6-1-2.

Preferably, toward one side of the mainstream smoke forming tube 6-2, the air flow channel 6-3 becomes narrower. That is, from upstream to downstream, the air flow passage 6-3 becomes narrower. At this time, the flow rate of the airflow gradually increases, the Kangda effect and the Venturi phenomenon are more significant, and the smoke extraction effect is enhanced. In this paper, the airflow direction in the smoking set is recorded as from upstream to downstream.

Preferably, the bottom end of the cone of the smoke extraction cone 6-1 is provided with an axially extending sleeve section 6-1-3, and the mainstream smoke forming tube 6-2 is far away from the cone 6-1- One end of 1 has an axially extending inner diameter enlarged section 6-2-4.

Preferably, a heating element 5 is provided on the circumferential side wall and/or bottom surface of the cigarette accommodating cavity 3.

Preferably, when the smoke extraction element 6 and the smoking set are arranged separately, the shape of the smoke extraction element 6 is suitable for being contained in the cigarette accommodating cavity 3.

Preferably, when the smoke extraction element 6 is fixed in the cigarette accommodating cavity 3, a door 4 is provided at the bottom of the cigarette accommodating cavity 3, and the door 4 includes a boss 4-1. A fixing and limiting mechanism 7 is provided between the smoke extraction element 6 and the cigarette accommodating cavity 3.

Preferably, the fixing and limiting mechanism 7 includes a limiting member connected with the smoke extraction element 6 and a groove for axial sliding of the limiting member. The limiting member is stuck in the groove, and when the limiting member axially slides in the groove, the smoke extraction element 6 is driven to move axially. The limiting member can also be clamped and fixed at a certain position in the groove to keep the smoke extraction element 6 fixed relative to the smoking article.

The second aspect of the present invention provides a plug-in oxygen-deficient heating cigarette system, which includes the plug-in oxygen-deficient heating cigarette set and segmented cigarettes described in the first aspect;

The segmented cigarette includes a tobacco section 1 and a filter section 2 that are detachably connected to each other, wherein one end surface and/or circumferential side of the tobacco section 1 is sealed by airtight foil, the tobacco section 1 The inner unsealed end has an axially extending unfilled section 1-1, the filter section 2 has a bare section 2-1 that is not wrapped by tipping paper, the unfilled section 1-1 and the The shapes of the exposed section 2-1 are matched with each other, so that when the tobacco section 1 and the filter section 2 are connected together, the exposed section 2-1 is inserted into the unfilled section 1-1;

In addition, the shape of the unfilled section 1-1 of the tobacco section 1 is also suitable for inserting with the sleeve section 6-1-3 of the smoke extraction cone 6-1, and the exposed section 2 of the filter section 2 The shape of -1 is also suitable for inserting with the enlarged inner diameter section 6-2-4 of the mainstream smoke forming tube 6-2.

A third aspect of the present invention provides a plug-in three-section cigarette, which includes the smoke extraction element 6 provided separately from the smoking set in the first aspect and the segmented cigarette according to the second aspect. The tobacco section 1 of the segment cigarette is inserted into the sleeve sections 6-1-3 at both ends of the smoke extraction element 6, and the filter section 2 is connected to the inner diameter enlarged section 6-2-4 of the smoke extraction element 6 Plug in.

The fourth aspect of the present invention provides a plug-in oxygen-deficient heating cigarette system smoking method, which uses the plug-in oxygen-deficient heating cigarette system of the second aspect, when the smoke extraction element 6 and its smoking set can be separated Smoking methods are as follows:

When smoking, separate the tobacco section 1 and the filter section 2 of the segmented cigarette, and respectively assemble them to the sleeve section 6-1-3 and the inner diameter expansion section 6-2-4 at both ends of the smoke extraction element 6. In the middle, a segmented cigarette A is formed; then the tobacco section 1 of the segmented cigarette A is inserted into the cigarette accommodating cavity 3, the heating element 5 is activated, and smoking is performed;

When the smoke extraction element 6 is fixed in the cigarette accommodating cavity 3, the smoking method is as follows:

When smoking, separate the tobacco section 1 and the filter section 2 of the segmented cigarette, open the door 4 located at the bottom of the cigarette accommodating cavity 3, and move the smoke extraction element 6 through the fixing and limiting mechanism 7 to remove the tobacco The section 1 and the filter section 2 are respectively assembled into the casing section 6-1-3 and the inner diameter expansion section 6-2-4 at both ends of the smoke extraction element 6 through the door 4 and the entrance of the cigarette accommodating cavity 3, and the assembly is completed After that, move the smoke extraction element 6 back to the limited position, close the door 4, activate the heating element 5, and perform suction;

After the suction is completed, the filter section 2 is directly pulled out, the door 4 is opened, and the smoke extraction element 6 is moved through the fixing and limiting mechanism 7 so that the tobacco section 1 at least partially exposes the door 4. Out the tobacco section 1;

Wherein, when the door 4 is closed, the boss 4-1 can compress the tobacco section 1 and achieve a sealing effect. At this time, the circumferential heating element 5 just partially or completely covers the tobacco section 1 ；

The heating element 5 is activated for suction. There is a gap 8 between the cigarette accommodating cavity 3 and the filter section 2, the smoke extraction element 6. When sucking, the air does not flow through the tobacco section, but passes through the gap. 8. The through hole 6-2-3 enters, and the negative pressure is generated at the internal cavity 6-2-1 of the smoke extraction element 6 due to the Venturi effect, and the smoke generated by the tobacco section 1 is extracted. The air is mixed to form mainstream smoke, which enters the consumer's mouth through the filter section 2;

Wherein, the tobacco section 1 and the filter section 2 are assembled to the sleeve section 6-1-3 and the inner diameter expansion section 6-2-4 at both ends of the smoke extraction element 6 through the door 4 and the entrance of the cigarette accommodating cavity 3, respectively. That is, the tobacco section 1 is inserted from one end of the door 4, and the filter section 2 is inserted from the entrance of the cigarette accommodating cavity 3.

The above technical solutions can be freely combined without contradiction.

The principle of the present invention is as follows:

Coanda effect, also known as Coanda effect or Coanda effect, refers to the tendency of fluid flow or airflow to move away from the original flow direction to flow with the protruding object surface due to surface friction when the fluid flows over the surface of the object. This effect is the Kangda effect.

The Venturi phenomenon means that low pressure will be generated near the fluid flowing at high speed, which will cause adsorption. Utilizing the Kangda effect, the air entering the small holes can flow along the surface of the flue gas extraction cone; due to the existence of the venturi phenomenon, the gas flowing at high speed along the surface of the extraction cone will form a negative pressure area at the extraction cone. With the existence of the pressure difference, the smoke generated by the closed tobacco section can be extracted.

Using the Kangda effect, the Venturi phenomenon, and the natural pressurization of the smoke generated when the shredded tobacco is heated, the fresh smoke generated in the confined space can be extracted.

The present invention has the following beneficial effects:

1. In the present invention, the air does not flow through the tobacco section, but a smoke extraction element is designed to use the Venturi effect and the Kangda effect to extract the fresh smoke generated in the confined space, which can reduce the oxygen content, so the heating temperature can be appropriately increased. , The cigarette will not burn, it is easier to achieve the diversity of the tobacco segment formula, the aroma components in the tobacco are released more fully, and it is easy to be continuously released, the taste is closer to traditional tobacco, and it is easier to be accepted by traditional smokers. In particular, the mainstream smoke forming tube has an internal cavity, the contour of the cavity is a venturi tube structure, the smoke extraction effect is enhanced, and the generated fresh smoke in the enclosed space can be extracted while reducing The oxygen content of the tobacco section can appropriately increase the temperature of heating the cigarette while the cigarette does not burn to meet the needs of smoke concentration.

2. In the preferred technical solution, the smoke extraction element is kept inside the cigarette accommodating cavity by means of a fixing and limiting mechanism, so that it is not easy to fall and lose. There is a door at the bottom of the cigarette accommodating cavity, which can move the smoke extraction element, and the tobacco section and the filter section are respectively inserted/disassembled at the two ends of the cigarette accommodating cavity, which is convenient for operation. In the prior art, the bottom of the cigarette accommodating cavity is sealed, and after smoking, the cigarette can only be pulled out from the filter tip. At this time, the cigarette expands by heat and becomes more brittle, making it more difficult to take out.

3. In the preferred technical solution, when heating, the boss on the door presses the tobacco section to form a closed structure, no tobacco residue will fall, and there is no need to clean the smoking utensil frequently.

4. In a preferred technical solution, toward the side of the mainstream smoke forming tube, the air flow channel becomes narrower. At this time, the flow rate of the airflow gradually increases, the Kangda effect and the Venturi phenomenon are more significant, and the smoke extraction effect is enhanced.

5. In the preferred technical solution, a ring-shaped boss is provided on the circumferential side wall of the tapered cavity of the venturi-shaped structure of the mainstream smoke forming tube of the smoke extraction element at a position corresponding to the cone hole, and the ring The shaped boss reduces the flow area of the air flow channel at the cone hole, further increases the gas flow rate, reduces the pressure, makes the Venturi phenomenon more significant, and further enhances the flue gas extraction effect.

Description of the drawings

Fig. 1 is an axial cross-sectional view of the parts of the split smoke extraction element in embodiment 1.

Figure 2 is an axial cross-sectional view of the integrated smoke extraction element in Embodiment 1.

Fig. 3 is an axial cross-sectional view of a plug-in oxygen-deficient heating smoking set in embodiment 2.

4 is an axial cross-sectional view of the plug-in oxygen-deficient heating cigarette system of Embodiment 3.

Fig. 5 is a schematic diagram of the overall structure of the segmented cigarette in Example 3.

Fig. 6 is an axial cross-sectional view of the parts of the segmented cigarette according to the third embodiment.

Fig. 7 is an axial cross-sectional view of the parts of the split-type smoke extraction element in the sixth embodiment.

Fig. 8 is an axial cross-sectional view of the plug-in three-segment cigarette-segmented cigarette A of the embodiment 7.

List of reference signs:

1. Tobacco section, 1-1, unfilled section, 2. Filter tip section, 2-1, bare section, 3. Cigarette containing cavity, 4. Door, 4-1, boss, 5. Heating element, 6 , Smoke extraction element, 6-1, smoke extraction cone, 6-1-1, cone, 6-1-2, cone hole, 6-1-3, casing section, 6-2, smoke transmission pipe , 6-2-1, internal cavity, 6-2-2 ring-shaped boss, 6-2-3, through hole, 6-2-4, inner diameter enlarged section, 6-3, air flow channel, 7, fixed And limit mechanism, 8. Gap.

Detailed ways

The content of the present invention will be further described below through specific implementations.

Example 1

A plug-in type oxygen-deficient heating smoking device, comprising a cigarette accommodating cavity 3, and further comprising a smoke extraction element 6 that can be separated from the smoking device;

The hollow part of the hollow flue gas extraction cone 6-1 has a tapered structure, and the side wall of the hollow flue gas extraction cone 6-1 has two cone holes 6-1-2;

The mainstream smoke forming tube 6-2 has an internal cavity 6-2-1, and the outline of the cavity 6-2-1 is a Venturi tube structure, that is, a small section passes between the tapered structure and the divergent structure. The cylindrical cavities with inner diameters are connected, and there are two through holes 6-2-3 on the circumferential side wall of the mainstream smoke forming tube 6-2, and the through holes 6-2-3 are located in the mainstream smoke forming tube gradually. At the upstream of the shrinking cavity, the axial distance between the through hole 6-2-3 and the bottom surface of the cone 6-1-1 is smaller than the distance between the cone hole 6-1-2 and the cone 6-1-1 The axial distance of the bottom surface;

Between the inner wall of the tapered cavity of the mainstream smoke forming tube 6-2 and the outer wall of the cone 6-1-1 is an airflow channel 6-3 that is in airflow communication with the cavity 6-2-1 ；

An annular boss 6-2-2 is provided on the circumferential side wall of the tapered cavity of the mainstream smoke forming tube 6-2 at a position corresponding to the cone hole 6-1-2.

Toward the side of the mainstream smoke forming pipe 6-2, the air flow channel 6-3 becomes narrower. At this time, the airflow velocity gradually increases, the Kangda effect and the Venturi phenomenon are more significant, and the smoke extraction effect is enhanced;

The bottom surface end of the cone of the smoke extraction cone 6-1 is provided with an axially extending sleeve section 6-1-3, and the end of the mainstream smoke forming tube 6-2 is away from the cone 6-1-1 With an axially extending inner diameter enlarged section 6-2-4;

Heating elements 5 are provided on the bottom surface and circumferential side walls of the cigarette accommodating cavity 3;

The shape of the smoke extraction element 6 is suitable for storing it inside the cigarette accommodating cavity 3.

The axial cross-sectional view of the parts when the smoke extraction element 6 is a split structure is shown in Fig. 1. At this time, the mainstream smoke forming tube 6-2 is detachably sleeved on the cone 6-1- of the smoke extraction cone 6-1. 1peripheral.

The axial cross-sectional view of the smoke extraction element 6 when it is an integrated structure is shown in Fig. 2. At this time, the mainstream smoke forming tube 6-2 is fixedly sleeved on the outer circumference of the cone 6-1 of the smoke extraction cone 6-1 , The cone hole 6-1-2 is located on the side wall of the cone body 6-1-1.

Example 2

As shown in Fig. 3, a plug-in type oxygen-deficient heating smoking device includes a cigarette accommodating cavity 3 and a smoke extraction element 6 fixed in the cigarette accommodating cavity 3;

The smoke extraction element 6 includes a hollow smoke extraction cone 6-1 and a mainstream smoke forming tube 6-2 fixedly sleeved on the outer periphery of the cone 6-1 of the smoke extraction cone 6-1;

The hollow part of the hollow flue gas extraction cone 6-1 has a tapered structure, and the cone top of the hollow flue gas extraction cone 6-1 has a cone hole 6-1-2, and the cone hole 6-1 The number of -2 is at least one;

The mainstream smoke forming tube 6-2 has an internal cavity 6-2-1, and the outline of the cavity 6-2-1 is a Venturi tube structure, that is, a small section passes between the tapered structure and the divergent structure. The cylindrical cavities with inner diameters are connected, the circumferential side wall of the mainstream smoke forming pipe 6-2 has at least one through hole 6-2-3, and the through hole 6-2-3 is located in the mainstream smoke forming pipe gradually. At the upstream of the shrinking cavity, the axial distance between the through hole 6-2-3 and the bottom surface of the cone 6-1-1 is smaller than the distance between the cone hole 6-1-2 and the cone 6-1-1 The axial distance of the bottom surface;

The inner diameter of the cigarette accommodating cavity 3 is larger than the outer diameter of the smoke extraction element 6. A door 4 is provided at the bottom of the cigarette accommodating cavity 3, the door 4 includes a boss 4-1, and a fixing and limiting mechanism 7 is provided between the smoke extraction element 6 and the cigarette accommodating cavity 3, The fixing and limiting mechanism 7 can fix the position of the smoke extraction element 6 relative to the smoking appliance, and can also drive the smoke extraction element 6 to move axially. Between the inner wall of the tapered cavity of the mainstream smoke forming tube 6-2 and the outer wall of the cone 6-1-1 is an airflow channel 6-3 that is in airflow communication with the cavity 6-2-1 , Towards the side of the mainstream smoke forming pipe 6-2, the air flow channel 6-3 becomes narrower. At this time, the airflow velocity gradually increases, the Kangda effect and the Venturi phenomenon are more significant, and the smoke extraction effect is enhanced;

A heating element 5 is provided on the circumferential side wall of the cigarette accommodating cavity 3.

An annular boss 6-2-2 is provided on the circumferential side wall of the tapered cavity of the mainstream smoke forming pipe 6-2 at a position corresponding to the cone hole 6-1-2.

Of course, in other solutions of Embodiment 2, the flue gas extraction element 6 may also have a split structure, as shown in FIG. 1.

Example 3

As shown in Figures 4, 5, and 6, a plug-in oxygen-deficient heating cigarette system, which includes the oxygen-deficient heating smoking set described in Example 2 and a segmented cigarette;

The segmented cigarette includes a tobacco section 1 and a filter section 2 that are detachably connected to each other, wherein one end surface and a circumferential side surface of the tobacco section 1 are sealed by airtight foil, and the tobacco section 1 is not The sealed end has an axially extending unfilled section 1-1, the filter section 2 has a bare section 2-1 that is not wrapped by tipping paper, the unfilled section 1-1 and the bare section The shapes of 2-1 are matched with each other, so that: when the tobacco section 1 and the filter section 2 are connected together, the bare section 2-1 is inserted into the unfilled section 1-1;

Fig. 4 is an axial cross-sectional view of the plug-in oxygen-deficient heating cigarette system of Embodiment 3, and the arrow direction in the figure is the airflow direction during smoking. Fig. 5 is a schematic diagram of the overall structure of the segmented cigarette in Example 3. Fig. 6 is an axial cross-sectional view of the parts of the segmented cigarette according to the third embodiment.

Example 4

A plug-in type oxygen-deficient heating cigarette smoking method, which uses the oxygen-deficient heating non-combustion cigarette system described in Example 1, the smoke extraction element 6 and its smoking set are arranged separately, and the smoking method is as follows:

When smoking, separate the tobacco section 1 and the filter section 2 of the segmented cigarette, and respectively assemble them to the sleeve section 6-1-3 and the inner diameter expansion section 6-2-4 at both ends of the smoke extraction element 6. In the middle, a segmented cigarette A is formed; then the tobacco section 1 of the segmented cigarette A is inserted into the cigarette containing cavity 3, the heating element 5 is activated, and smoking is performed.

Example 5

A plug-in type oxygen-deficient heating cigarette smoking method, which uses the oxygen-deficient heating non-combustion cigarette system described in embodiment 2, the smoke extraction element 6 is fixed in the cigarette accommodating cavity 3, and the smoking method is as follows:

Wherein, when the door 4 is closed, the boss 4-1 can compress the tobacco section 1 and achieve a sealing effect. At this time, the circumferential heating element 5 just completely covers the tobacco section 1;

Wherein, the tobacco section 1 and the filter section 2 are assembled to the sleeve section 6-1-3 and the inner diameter expansion section 6-2-4 at both ends of the smoke extraction element 6 through the door 4 and the entrance of the cigarette accommodating cavity 3, respectively. , That is, the tobacco section 1 is inserted from one end of the door 4, and the filter section 2 is inserted from the entrance of the cigarette accommodating cavity 3;

When pumping, the airflow direction is shown in Figure 4. There is a gap 8 between the cigarette accommodating cavity 3 and the filter section 2 and the smoke extraction element 6. When sucking, the air does not flow through the tobacco section 1, but enters through the gap 8, the through hole 6-2-3, and the internal cavity 6-2-1 of the smoke extraction element 6 produces a negative effect due to the Venturi effect. Press to extract the smoke generated by the tobacco section 1, and the smoke is mixed with air to form mainstream smoke, which enters the consumer’s mouth through the filter section.

Example 6

The difference from Example 1 is:

The circumferential side wall of the tapered cavity of the mainstream smoke forming tube 6-2 is not provided with an annular boss 6-2-2 at a position corresponding to the cone hole 6-1-2. The cone hole 6-1-2 is arranged at the top of the hollow flue gas extraction cone 6-1, and the number is one. An axial cross-sectional view of the parts when the smoke extraction element 6 has a split structure is shown in FIG. 7. which is

The hollow part of the hollow flue gas extraction cone 6-1 has a tapered structure, and the cone of the hollow flue gas extraction cone 6-1 has a cone hole 6-1-2;

The bottom surface end of the cone of the smoke extraction cone 6-1 is provided with an axially extending sleeve section 6-1-3, and the end of the mainstream smoke forming tube 6-2 is away from the cone 6-1-1 With an axially extending inner diameter enlarged section 6-2-3;

Example 7

As shown in Figure 8, a plug-in three-segment cigarette, which includes a smoke extraction element 6 that is separated from the smoking set in Example 6 and the segmented cigarette described in Example 3. The segmented cigarette has The tobacco section 1 is plugged into the sleeve sections 6-1-3 at both ends of the smoke extraction element 6, and the filter tip section 2 is plugged into the inner diameter enlarged section 6-2-4 of the smoke extraction element 6. An axial cross-sectional view of the plug-in three-section cigarette when the smoke extraction element 6 is a split structure is shown in FIG. 8.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A plug-in type oxygen-deficient heating smoking device, comprising a cigarette accommodating cavity (3), and is characterized in that it also includes a smoke extraction device that can be separated from the smoking device or fixed in the cigarette accommodating cavity (3) Element (6);

The flue gas extraction element (6) includes a hollow flue gas extraction cone (6-1) and a fixed or detachable cone (6-1-1) sheathed in the flue gas extraction cone (6-1) Peripheral mainstream smoke forming tube (6-2);

The hollow part of the hollow flue gas extraction cone (6-1) has a tapered structure, and the cone top and/or the side wall of the hollow flue gas extraction cone (6-1) has a cone hole (6- 1-2), the number of said taper holes (6-1-2) is at least one;

The mainstream smoke forming tube (6-2) has an internal cavity (6-2-1), and the outline of the cavity (6-2-1) is a venturi-like structure, that is, tapered and gradually expanded The structures are connected by a section of cylindrical cavity with a small inner diameter, and the main flow smoke forming tube (6-2) has at least one through hole (6-2-3) on the circumferential side wall, and the through hole (6-2) -2-3) Located upstream of the tapered cavity of the mainstream smoke forming tube (6-2), the through hole (6-2-3) is axially away from the bottom surface of the cone (6-1-1) The distance is less than the axial distance between the cone hole (6-1-2) and the bottom surface of the cone (6-1-1),

The inner diameter of the cigarette accommodating cavity (3) is larger than the outer diameter of the smoke extraction element (6);

Between the inner wall of the tapered cavity of the mainstream smoke forming tube (6-2) and the outer wall of the cone (6-1-1) there is an air flow with the cavity (6-2-1) Connected air flow channel (6-3).
The plug-in oxygen-deficient heating smoking set according to claim 1, wherein the tapered cavity of the mainstream smoke forming tube (6-2) is connected to the tapered hole (6-1) on the circumferential side wall. -2) A ring-shaped boss (6-2-2) is set at the corresponding position.
The plug-in type oxygen-deficient heating smoking article according to claim 1 or 2, characterized in that, toward one side of the mainstream smoke forming tube (6-2), the air flow channel (6-3) becomes narrower.
The plug-in oxygen-deficient heating smoking device according to claim 1 or 2, characterized in that the bottom end of the cone of the flue gas extraction cone (6-1) is provided with an axially extending sleeve section (6-1- 3) The end of the mainstream smoke forming tube (6-2) away from the cone (6-1-1) has an axially extending inner diameter enlarged section (6-2-4).
The plug-in oxygen-deficient heating smoking set according to claim 1 or 2, characterized in that a heating element (5) is provided on the circumferential side wall and/or the bottom surface of the cigarette accommodating cavity (3).
The plug-in oxygen-deficient heating smoking set according to claim 1 or 2, wherein when the smoke extraction element (6) and the smoking set are arranged separately, the shape of the smoke extraction element (6) is suitable for being accommodated in the smoking set. Inside the cavity (3).
The plug-in oxygen-deficient heating smoking set according to claim 1 or 2, characterized in that, when the smoke extraction element (6) is fixed in the cigarette accommodating cavity (3), the cigarette accommodating A door (4) is provided at the bottom of the cavity (3), the door (4) includes a boss (4-1), and the smoke extraction element (6) is arranged between the cigarette accommodating cavity (3) Fixing and limiting mechanism (7).
A plug-in oxygen-deficient heating cigarette system, characterized by comprising the plug-in oxygen-deficient heating cigarette set and segmented cigarettes according to any one of claims 1-5;

The segmented cigarette includes a tobacco section (1) and a filter section (2) that are detachably connected to each other, wherein one end surface and/or circumferential side of the tobacco section (1) is sealed by airtight foil , The unsealed end of the tobacco section (1) has an axially extending unfilled section (1-1), and the filter section (2) has a bare section (2- 1), the shapes of the unfilled section (1-1) and the exposed section (2-1) are matched with each other, so that: when the tobacco section (1) and the filter section (2) are connected together, the The bare section (2-1) is inserted into the unfilled section (1-1);

Moreover, the shape of the unfilled section (1-1) of the tobacco section (1) is also suitable for plugging with the sleeve section (6-1-3) of the smoke extraction cone (6-1), and The shape of the exposed section (2-1) of the filter section (2) is also suitable for inserting with the enlarged inner diameter section (6-2-4) of the mainstream smoke forming tube (6-2).
A plug-in three-section cigarette, characterized by comprising the smoke extraction element (6) provided separately from the smoking set in any one of claims 1 to 6 and the section according to claim 8 Cigarette, the tobacco section (1) of the segmented cigarette is inserted into the sleeve sections (6-1-3) at both ends of the smoke extraction element (6), and the filter section (2) is connected to the The expanded section (6-2-4) of the inner diameter of the flue gas extraction element (6) is plugged in.
A plug-in oxygen-deficient heating cigarette smoking method, characterized in that it uses the plug-in oxygen-deficient heating cigarette system of claim 8, and when the smoke extraction element (6) and its smoking set are separately arranged, The smoking method is as follows:

When smoking, separate the tobacco section (1) and the filter section (2) of the segmented cigarette, and respectively assemble them to the sleeve sections (6-1-3) and the two ends of the smoke extraction element (6) A segmented cigarette A is formed in the enlarged inner diameter section (6-2-4); then the tobacco segment (1) of the segmented cigarette A is inserted into the cigarette accommodating cavity (3), and the heating element is activated (5), suction;

When the smoke extraction element (6) is fixed in the cigarette accommodating cavity (3), the smoking method is as follows:

When smoking, separate the tobacco section (1) and the filter section (2) of the segmented cigarette, open the door (4) located at the bottom of the cigarette accommodating cavity (3), and pass the fixing and limiting mechanism (7) ) Move the smoke extraction element (6), and assemble the tobacco section (1) and the filter section (2) to the smoke extraction element (6) through the door (4) and the entrance of the cigarette accommodating cavity (3) respectively In the casing section (6-1-3) and the inner diameter expansion section (6-2-4) at both ends, after the assembly is completed, move the flue gas extraction element (6) back to the limited position, close the door (4), and activate the heating element (5), suction;

After the suction is completed, the filter section (2) is directly pulled out, the door (4) is opened, and the smoke extraction element (6) is moved through the fixing and limiting mechanism (7) to make the tobacco section (1) ) At least part of the door (4) is exposed, and the tobacco section (1) is pulled out.