阅读说明：本技术 文丘里效应增强的烟具及包含其的卷烟组件和使用方法 (Smoking article with enhanced venturi effect, cigarette assembly including same, and method of use ) 是由 张柯 雷萍 王爽 吴俊� 李斌 廖思尧 王乐 尚善斋 黄锋 龚为民 付丽丽 王 于 2020-04-28 设计创作，主要内容包括：本发明属于加热不燃烧卷烟烟具领域,特别涉及一种文丘里效应增强的贫氧加热烟具及包含其的卷烟组件和使用方法。所述烟具包含烟气提取元件(6),烟气提取元件(6)包括中空型烟气提取锥(6-1)和固定式或可拆卸式套在该烟气提取锥(6-1)的锥体(6-1-1)外周的主流烟气形成管(6-2)；所述主流烟气形成管(6-2)具有一内部空腔(6-2-1),所述空腔(6-2-1)文丘里管式结构的渐缩空腔的周向侧壁上与烟气提取锥(6-1)的锥孔(6-1-2)相应的位置处设置一环状凸台(6-2-2)。本发明烟气提取元件文丘里管渐缩结构空腔的周向侧壁上与锥孔相应的位置处设置一环状凸台,减少锥孔处气流通道的流通面积,进一步增大气体流速,使得文丘里现象更显著,进一步增强烟气提取效果。(The invention belongs to the field of heating non-combustion cigarette smoking sets, and particularly relates to an oxygen-deficient heating smoking set with enhanced Venturi effect, a cigarette assembly comprising the same and a using method. The smoking set comprises a smoke extraction element (6), wherein the smoke extraction element (6) comprises a hollow smoke extraction cone (6-1) and a main stream smoke forming pipe (6-2) which is fixedly or detachably sleeved on the periphery of the cone (6-1-1) of the smoke extraction cone (6-1); the main stream smoke forming pipe (6-2) is provided with an inner cavity (6-2-1), and an annular boss (6-2-2) is arranged on the circumferential side wall of the gradually-reduced cavity of the Venturi tube type structure of the cavity (6-2-1) at a position corresponding to the taper hole (6-1-2) of the smoke extraction taper (6-1). The annular boss is arranged on the circumferential side wall of the cavity of the Venturi tube tapered structure of the smoke extraction element, corresponding to the taper hole, so that the flow area of the airflow channel at the taper hole is reduced, the gas flow speed is further increased, the Venturi phenomenon is more remarkable, and the smoke extraction effect is further enhanced.)

1. A Venturi effect enhanced oxygen-deficient heating smoking set comprises a cigarette accommodating cavity (3), and is characterized by further comprising a smoke extraction element (6) which is arranged or fixed in the cigarette accommodating cavity (3) in a split mode;

the smoke extraction element (6) comprises a hollow smoke extraction cone (6-1) and a main stream smoke forming pipe (6-2) which is fixedly or detachably sleeved on the periphery of the cone (6-1-1) of the smoke extraction cone (6-1);

the hollow part of the hollow flue gas extraction cone (6-1) is of a tapered structure, the side wall of the hollow flue gas extraction cone (6-1) is provided with at least one taper hole (6-1-2), and the number of the taper holes (6-1-2) is at least one;

the main stream smoke forming pipe (6-2) is provided with an inner cavity (6-2-1), the outline of the cavity (6-2-1) is of a Venturi tube type structure, namely, a reducing structure and a gradually expanding structure are connected through a section of cylindrical cavity with small inner diameter, the circumferential side wall of the main stream smoke forming pipe (6-2) is provided with at least one through hole (6-2-3), the through hole (6-2-3) is positioned at the upstream of the gradually reducing cavity of the main stream smoke forming pipe (6-2), and the axial distance from the through hole (6-2-3) to the bottom surface of the cone (6-1-1) is smaller than the axial distance from the cone hole (6-1-2) to the bottom surface of the cone (6-1-1);

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

an airflow channel (6-3) which is communicated with the cavity (6-2-1) in an airflow way is arranged between the inner wall of the tapered cavity of the main stream smoke forming pipe (6-2) and the outer wall of the cone (6-1-1);

an annular boss (6-2-2) is arranged at a position, corresponding to the taper hole (6-1-2), on the circumferential side wall of the tapered structure cavity.

2. An oxygen-deficient heated smoking article according to claim 1, wherein the airflow channel (6-3) narrows towards the side of the mainstream smoke-forming tube (6-2).

3. An oxygen-deficient heated smoking article according to claim 1, wherein the cone base end 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) remote from the cone (6-1-1) has an axially extending expanded inner diameter section (6-2-4).

4. Oxygen-deficient heated smoking article according to claim 1, wherein the cigarette receiving chamber (3) is provided with heating elements (5) on the circumferential side walls and/or bottom surface.

5. Oxygen-deficient heated smoking article according to claim 1, wherein the smoke-extracting element (6) is shaped so as to be receivable inside the cigarette receiving chamber (3) when arranged separately from the smoking article.

6. Oxygen-deficient heating smoking set according to claim 1, wherein when the smoke extraction element (6) is fixed in the cigarette accommodating chamber (3), a door (4) is arranged at the bottom of the cigarette accommodating chamber (3), a boss (4-1) is arranged on the door (4), and a fixing and limiting mechanism (7) is arranged between the smoke extraction element (6) and the cigarette accommodating chamber (3).

7. The oxygen-deficient heated smoking article according to claim 1, wherein the conical top of the hollow flue gas extraction cone (6-1) cone also has a conical bore (6-1-2).

8. An oxygen-deficient heated smoking article comprising an oxygen-deficient heated smoking article according to any one of claims 1 to 7 and a segmented cigarette;

the segmented cigarette comprises a tobacco segment (1) and a filter segment (2) which are detachably connected with each other, wherein one end face and/or circumferential side face of the tobacco segment (1) is sealed by airtight foil paper, the end which is not sealed in the tobacco segment (1) is provided with an unfilled segment (1-1) which extends axially, the filter segment (2) is provided with an exposed segment (2-1) which is not wrapped by tipping paper, and the unfilled segment (1-1) and the exposed segment (2-1) are matched with each other in shape, so that: the exposed segment (2-1) is inserted into the unfilled segment (1-1) when the tobacco segment (1) and filter segment (2) are joined together;

and the unfilled section (1-1) of the tobacco section (1) is also shaped to be inserted into the sleeve section (6-1-3) of the smoke extraction cone (6-1), and the exposed section (2-1) of the filter section (2) is also shaped to be inserted into the expanded inner diameter section (6-2-4) of the mainstream smoke-forming tube (6-2).

9. A method of smoking a heated lean oxygen containing cigarette using the oxygen-lean heat non-combustible cigarette package of claim 8, when the smoke extraction element (6) is provided separately from its smoking article, the method of smoking comprising:

during smoking, the tobacco section (1) and the filter tip section (2) of the sectional cigarette are separated and respectively assembled into the sleeve section (6-1-3) and the inner diameter expansion section (6-2-4) at two ends of the smoke extraction element (6) to form a sectional cigarette A; then inserting the tobacco section (1) of the sectional type cigarette into the cigarette accommodating cavity (3), and starting the heating element (5) for suction;

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

during smoking, separating a tobacco section (1) and a filter tip section (2) of the sectional type cigarette, opening a door (4) positioned at the bottom of a cigarette accommodating cavity (3), moving a smoke extraction element (6) through a fixing and limiting mechanism (7), respectively assembling the tobacco section (1) and the filter tip section (2) into a sleeve section (6-1-3) and an inner diameter expansion section (6-2-4) at two ends of the smoke extraction element (6), after the assembly is finished, moving the smoke extraction element (6) to return to a limiting position, closing the door (4), starting a heating element (5) and smoking;

after the suction is finished, the filter tip section (2) is directly pulled out, the door (4) is opened, the smoke extraction element (6) is moved through the fixing and limiting mechanism (7) so that the tobacco section (1) is at least partially exposed out of the door (4), and the tobacco section (1) is pulled out.

10. A plug-in three-segment cigarette, characterized in that it comprises the smoke extraction element (6) according to any one of claims 1 to 7 arranged separately from the smoking set and the tobacco segment (1) and filter segment (2) of the segmented cigarette according to claim 8, the unfilled segment (1-1) of the tobacco segment (1) and the sleeve segment (6-1-3) of the smoke extraction cone (6-1) being plugged into each other, and the uncovered segment (2-1) of the filter segment (2) and the inner diameter expanded segment (6-2-4) of the mainstream smoke-forming tube (6-2) being plugged into each other.

Technical Field

The invention belongs to the field of heating non-combustion cigarette smoking sets, and particularly relates to an oxygen-deficient heating smoking set with enhanced Venturi effect, a cigarette assembly comprising the same and a using method.

Background

Traditional tobacco has been in the past for centuries and has been incorporated into the lives of most smokers. In recent years, along with the improvement of living standard of people, the problems of smoking, health, harm of second-hand smoke and the like are more and more emphasized by people, and the harmfulness brought by the traditional tobacco products is more and more prominent. Meanwhile, with the implementation of WHO tobacco control framework convention, especially the gradual expansion of smoking ban in public places of all countries in the world, the development environment of tobacco products has been changed significantly and profoundly, and the structure of tobacco products is being adjusted rapidly towards the development direction of diversification and no smoke. The new tobacco products gradually become the realistic choice for various large transnational tobacco enterprises to deal with the sales of the traditional tobacco products.

At present, most of the non-combustible heating cigarettes adopt air as a carrier of smoke, in order to ensure that the tobacco is not combusted, the applied heating temperature is usually lower and generally does not exceed 300 ℃, compared with the traditional cigarette, the tobacco aroma components of the novel non-combustible heating cigarette are difficult to completely release, and the smoke quantity is insufficient, so that the cigarette is difficult to be accepted by traditional smokers. In addition, in order to ensure air circulation, most of the tobacco ends of the cigarettes which are not heated and combusted are in an open structure, namely, the cut tobacco or the reconstituted tobacco sheets are directly exposed outside or are connected with the outside atmosphere through a certain airflow channel, and tobacco residues can drop off and easily pollute the smoking set in the process of pulling out the smoke bomb after smoking is finished, so that the smoking set is cleaned by the tobacco in a certain time.

If a closed cigarette structure is adopted, the oxygen content is reduced along with the heating process (due to the replacement effect of the formed fresh smoke on the internal atmosphere), at the moment, even if the heating temperature is increased, the combustion phenomenon can not occur, and meanwhile, the situation that the tobacco residues fall to pollute the smoking set can not occur. However, closed cigarette smoke migration would be difficult because no carrier gas is flowing through the tobacco.

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

Disclosure of Invention

The present invention has been made to solve the above problems.

The invention provides an oxygen-deficient heating smoking set with enhanced Venturi effect, which comprises a cigarette accommodating cavity 3 and a smoke extraction element 6 which is arranged or fixed in the cigarette accommodating cavity 3 in a split manner with the smoking set;

the smoke extraction element 6 comprises a hollow smoke extraction cone 6-1 and a main stream smoke forming pipe 6-2 which is fixedly or detachably sleeved on the periphery of the cone 6-1-1 of the smoke extraction cone 6-1;

the hollow part of the hollow flue gas extraction cone 6-1 is of a tapered structure, the side wall of the hollow flue gas extraction cone 6-1 is provided with at least one conical hole 6-1-2, and the number of the conical holes 6-1-2 is at least one;

the main stream smoke forming pipe 6-2 is provided with an inner cavity 6-2-1, the outline of the cavity 6-2-1 is a Venturi tube type structure, namely, a reducing structure and a gradually expanding structure are connected through a section of cylindrical cavity with small inner diameter, the circumferential side wall of the main stream smoke forming pipe 6-2 is provided with at least one through hole 6-2-2, the through hole 6-2-2 is positioned at the upstream of the reducing cavity of the main stream smoke forming pipe, the axial distance from the through hole 6-2-2 to the bottom surface of the cone 6-1-1 is smaller than the axial distance from the cone hole 6-1-2 to the bottom surface of the cone 6-1-1,

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

an airflow channel 6-3 communicated with the cavity 6-2-1 in an airflow manner is arranged between the inner wall of the tapered cavity of the main stream smoke forming pipe 6-2 and the outer wall of the cone 6-1-1;

an annular boss 6-2-2 is arranged at a position, corresponding to the taper hole 6-1-2, on the circumferential side wall of the tapered structure cavity.

The annular boss 6-2-2 has the following functions: the flow area of the airflow channel at the position of the taper hole 6-1-2 is reduced, the gas flow rate is further increased, the pressure is reduced, the Venturi phenomenon is more remarkable, and the smoke extraction effect is further enhanced.

Preferably, the airflow channel 6-3 narrows towards the side of the mainstream smoke-forming tube 6-2. At this time, the flow velocity of the air flow is gradually increased, the coanda effect and the venturi phenomenon are more remarkable, and the flue gas extraction effect is enhanced.

Preferably, the cone bottom surface end of the smoke extraction cone 6-1 is provided with an axially extending sleeve section 6-1-3, and one end of the mainstream smoke forming pipe 6-2 away from the cone 6-1-1 is provided with an axially extending inner diameter expanding section 6-2-3.

Preferably, heating elements 5 are arranged on the bottom surface and/or the circumferential side wall of cigarette accommodating cavity 3.

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

Preferably, when the smoke extraction element 6 is fixed in the cigarette holding cavity 3, the bottom of the cigarette holding cavity 3 is provided with a door 4, the door 4 is provided with a boss 4-1, the smoke extraction element 6 and the cigarette holding cavity 3 are provided with a fixing and limiting mechanism 7 therebetween.

Preferably, the conical top of the hollow flue gas extraction cone 6-1 also has a conical hole 6-1-2

In a second aspect, the present invention provides an oxygen-deficient heated smoking article comprising an oxygen-deficient heated smoking article according to the first aspect;

the segmented cigarette comprises a tobacco segment 1 and a filter segment 2 which are detachably connected with each other, wherein one end face and/or circumferential side face of the tobacco segment 1 is sealed by airtight foil paper, the end which is not sealed in the tobacco segment 1 is provided with an unfilled segment 1-1 which extends axially, the filter segment 2 is provided with an exposed segment 2-1 which is not wrapped by tipping paper, and the unfilled segment 1-1 and the exposed segment 2-1 are matched with each other in shape, so that: the exposed segment 2-1 is inserted into the unfilled segment 1-1 when tobacco segment 1 and filter segment 2 are joined together;

and the unfilled section 1-1 of the tobacco section 1 is also shaped to be inserted into the casing section 6-1-3 of the smoke extraction cone 6-1, and the exposed section 2-1 of the filter section 2 is also shaped to be inserted into the expanded inner diameter section 6-2-3 of the mainstream smoke-forming tube 6-2.

In a third aspect of the present invention, there is provided an oxygen-deficient heating type smoking method using the oxygen-deficient heating non-combustible cigarette component of the second aspect, wherein when the smoke extracting element 6 is provided separately from its smoking set, the smoking method comprises:

during smoking, the tobacco section 1 and the filter tip section 2 of the sectional cigarette are separated and respectively assembled into the sleeve section 6-1-3 and the inner diameter expansion section 6-2-3 at the two ends of the smoke extraction element 6 to form a sectional cigarette A; then inserting the tobacco section 1 of the sectional type cigarette into the cigarette accommodating cavity 3, starting the heating element 5 and sucking;

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

during smoking, separating the tobacco section 1 and the filter tip section 2 of the sectional type cigarette, opening a door 4 positioned at the bottom of a cigarette accommodating cavity 3, moving a smoke extraction element 6 through a fixing and limiting mechanism 7, respectively assembling the tobacco section 1 and the filter tip section 2 into a sleeve section 6-1-3 and an inner diameter expansion section 6-2-3 at two ends of the smoke extraction element 6, after the assembly is completed, moving the smoke extraction element 6 to a limiting position, closing the door 4, starting a heating element 5, and smoking;

after the suction is finished, the filter tip section 2 is directly pulled out, the door 4 is opened, the smoke extraction element 6 is moved through the fixing and limiting mechanism 7, so that the tobacco section 1 is at least partially exposed out of the door 4, and the tobacco section 1 is pulled out.

When the door 4 is closed, the boss 4-1 can press the tobacco segment 1, and a sealing effect is achieved, and at the moment, the circumferential heating element 5 just partially or completely covers the tobacco segment 1.

Start heating element 5, aspirate, the cigarette props up holds chamber 3 with space 8 has between filter tip section 2, the flue gas extraction component 6, during the suction, the air does not flow through the tobacco section, but gets into through space 8, through-hole 6-2-2, produces the negative pressure because the venturi effect in the inside cavity 6-2-1 department that the flue gas extracted component 6, draws the flue gas that tobacco section 1 produced, forms mainstream smoke after flue gas and air mix, passes through filter tip section 2 gets into the consumer oral cavity.

Wherein the tobacco section 1 and the filter section 2 are assembled into the sleeve section 6-1-3 and the inner diameter expansion section 6-2-3 at both ends of the smoke extraction element 6, respectively, i.e. the tobacco section 1 is inserted from one end of the door 4 and the filter section 2 is inserted from the other end.

The fourth aspect of the invention provides a plug-in type three-segment cigarette, which comprises the smoke extraction element 6 arranged in a split manner with the smoking set in the first aspect and the tobacco segment 1 and the filter segment 2 of the segmented cigarette in the second aspect, wherein the unfilled segment 1-1 of the tobacco segment 1 and the sleeve segment 6-1-3 of the smoke extraction cone 6-1 are plugged with each other, and the exposed segment 2-1 of the filter segment 2 and the inner diameter expansion segment 6-2-4 of the main stream smoke forming tube 6-2 are plugged with each other.

The technical scheme can be freely combined on the premise of no contradiction.

The principle of the invention is as follows:

the coanda effect, also known as coanda effect or coanda effect, is the effect whereby when a fluid flows over a surface of an object, the fluid water or air tends to flow away from its original direction of flow instead of following the surface of the protrusions due to surface friction.

The venturi phenomenon is a phenomenon in which low pressure is generated in the vicinity of a fluid flowing at a high speed, thereby generating an adsorption effect. The air entering the small hole can flow along the surface of the smoke extraction cone by utilizing the coanda effect; because of the existence of the Venturi phenomenon, the gas flowing along the surface of the extraction cone at high speed can form a negative pressure area at the opening of the extraction cone, and the smoke generated by the closed tobacco section can be extracted due to the existence of pressure difference.

The fresh flue gas generated in the closed space can be extracted by utilizing the coanda effect and the Venturi phenomenon.

The invention has the following beneficial effects:

1. the invention does not adopt air as a carrier, but designs a smoke extraction element to extract fresh smoke generated in a closed space by utilizing Venturi effect and Karda effect, and can reduce the oxygen content, so the heating temperature can be improved, cigarettes can not be combusted, the diversity of the formula of a tobacco section can be realized more easily, the release of aroma components in the tobacco is more sufficient, the sustained release is easy, the taste is closer to that of the traditional tobacco, and the traditional tobacco is accepted more easily by traditional smokers. Especially, set up an annular boss with the corresponding position department of taper hole on the circumference lateral wall of flue gas extraction element venturi convergent structure cavity, reduce the flow area of taper hole department air current channel, further increase the gas velocity of flow, reduce pressure for the venturi phenomenon is more showing, further strengthens flue gas extraction effect.

2. Among the preferred technical scheme, the flue gas draws the component and relies on fixed and stop gear to keep holding at cigarette and hold intracavity portion, is difficult for dropping and loses. The cigarette holds the chamber bottom and has the door, can remove the flue gas and draw the component, pegs graft respectively at the cigarette both ends that hold the chamber/dismantle tobacco leaf section and filter tip section, convenient operation. And among the prior art, the cigarette holds chamber bottom sealed, and a cigarette suction finishes the back, only can take out from the filter tip end, and a cigarette brittleness is bigger this moment, more is difficult for taking out.

3. In the preferred technical scheme, during heating, the boss on the door compresses tightly the tobacco section to form a closed structure, so that no tobacco residue falls off, and the smoking set does not need to be cleaned frequently.

4. In a preferred embodiment, the gas flow channel narrows towards a side of the mainstream smoke-forming tube. At this time, the flow velocity of the air flow is gradually increased, the coanda effect and the venturi phenomenon are more remarkable, and the flue gas extraction effect is enhanced.

Drawings

Fig. 1 is a schematic view of an explosive structure to be assembled of a smoke extraction element of example 1.

FIG. 2 is an axial cross-sectional view of a smoke extraction element of example 1.

FIG. 3 is an axial cross-sectional view of an oxygen-deficient heated smoking article of example 2.

Figure 4 is the outline structure of the cigarette assembly in the smoking of the embodiment 5.

FIG. 5 is the sectional type cigarette in accordance with embodiment 3.

FIG. 6 is an axial sectional view of the explosive structure to be assembled of the sectional type cigarette according to embodiment 3.

List of reference numerals:

1. the cigarette comprises a tobacco section 1-1, an unfilled section 2, a filter tip section 2-1, an exposed section 3, a cigarette accommodating cavity 4, a door 4-1, a boss 5, a heating element 6, a smoke extraction element 6-1, a smoke extraction cone 6-1-1, a cone 6-1-2, a cone hole 6-1-3, a sleeve section 6-2, a smoke transmission pipe 6-2-1, an internal cavity 6-2-2 annular boss 6-2-3, a through hole 6-2-4, an inner diameter expanding section 6-3, an airflow channel 7, a fixing and limiting mechanism 8 and a gap.

Detailed Description

The present invention will be further described with reference to the following embodiments.

Example 1

An oxygen-deficient heating smoking set comprises a cigarette accommodating cavity 3 and a smoke extraction element 6 which is arranged with the smoking set in a split way;

the smoke extraction element 6 comprises a hollow smoke extraction cone 6-1 and a main stream smoke forming pipe 6-2 which is fixedly or detachably sleeved on the periphery of the cone 6-1-1 of the smoke extraction cone 6-1;

the hollow part of the hollow flue gas extraction cone 6-1 is of a tapered structure, the side wall of the hollow flue gas extraction cone 6-1 is provided with at least one conical hole 6-1-2, and the number of the conical holes 6-1-2 is at least one;

the main stream smoke forming pipe 6-2 is provided with an inner cavity 6-2-1, the outline of the cavity 6-2-1 is a Venturi tube type structure, namely, a reducing structure and a gradually expanding structure are connected through a section of cylindrical cavity with small inner diameter, the circumferential side wall of the main stream smoke forming pipe 6-2 is provided with at least one through hole 6-2-2, the through hole 6-2-2 is positioned at the upstream of the reducing cavity of the main stream smoke forming pipe, the axial distance from the through hole 6-2-2 to the bottom surface of the cone 6-1-1 is smaller than the axial distance from the cone hole 6-1-2 to the bottom surface of the cone 6-1-1,

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

an annular boss 6-2-2 is arranged at a position, corresponding to the taper hole 6-1-2, on the circumferential side wall of the tapered structure cavity.

An airflow channel 6-3 communicated with the cavity 6-2-1 in an airflow manner is arranged between the inner wall of the tapered cavity of the main stream smoke forming pipe 6-2 and the outer wall of the cone 6-1-1.

The airflow channel 6-3 narrows towards the side of the mainstream smoke-forming tube 6-2. At this time, the flow velocity of the air flow is gradually increased, the coanda effect and the venturi phenomenon are more remarkable, and the flue gas extraction effect is enhanced.

The end of the bottom surface of the smoke extraction cone 6-1 is provided with an axially extending casing section 6-1-3, and one end of the main stream smoke forming pipe 6-2 far away from the cone 6-1-1 is provided with an axially extending inner diameter expanding section 6-2-3.

Heating elements 5 are arranged on the bottom surface and the circumferential side wall of the cigarette accommodating cavity 3.

The smoke extraction element 6 has a shape suitable for receiving it inside the cigarette containing chamber 3.

The smoke extraction element 6 is shown in figures 1 and 2, and the hollow smoke extraction cone 6-1 and the main stream smoke forming pipe 6-2 are respectively connected in a detachable mode and a fixed mode.

Example 2

An oxygen-deficient heating smoking set comprises a cigarette accommodating cavity 3 and a smoke extraction element 6 fixed in the cigarette accommodating cavity 3 together with the smoking set; as can be seen in the attached figure 3,

the smoke extraction element 6 comprises a hollow smoke extraction cone 6-1 and a main stream smoke forming pipe 6-2 which is fixedly or detachably sleeved on the periphery of the cone 6-1-1 of the smoke extraction cone 6-1;

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

the main stream smoke forming pipe 6-2 is provided with an inner cavity 6-2-1, the outline of the cavity 6-2-1 is a Venturi tube type structure, namely, a reducing structure and a gradually expanding structure are connected through a section of cylindrical cavity with small inner diameter, the circumferential side wall of the main stream smoke forming pipe 6-2 is provided with at least one through hole 6-2-2, the through hole 6-2-2 is positioned at the upstream of the reducing cavity of the main stream smoke forming pipe, the axial distance from the through hole 6-2-2 to the bottom surface of the cone 6-1-1 is smaller than the axial distance from the cone hole 6-1-2 to the bottom surface of the cone 6-1-1,

the inner diameter of the cigarette accommodating cavity 3 is larger than or equal to the outer diameter of the smoke extraction element 6. The cigarette holds the chamber 3 bottom and is provided with door 4, contain boss 4-1 on the door 4, institute the flue gas draws the component 6 with the cigarette props up and holds and set up fixed and stop gear 7 between the chamber 3.

An airflow channel 6-3 communicated with the cavity 6-2-1 in an airflow manner is arranged between the inner wall of the tapered cavity of the main stream smoke forming pipe 6-2 and the outer wall of the cone 6-1-1.

An annular boss 6-2-2 is arranged at a position, corresponding to the taper hole 6-1-2, on the circumferential side wall of the tapered structure cavity.

The airflow channel 6-3 narrows towards the side of the mainstream smoke-forming tube 6-2. At this time, the flow velocity of the air flow is gradually increased, the coanda effect and the venturi phenomenon are more remarkable, and the flue gas extraction effect is enhanced.

The end of the bottom surface of the smoke extraction cone 6-1 is provided with an axially extending casing section 6-1-3, and one end of the main stream smoke forming pipe 6-2 far away from the cone 6-1-1 is provided with an axially extending inner diameter expanding section 6-2-3.

The cigarette holds 3 circumference lateral walls of chamber and sets up heating element 5.

Example 3

An oxygen-deficient heated cigarette component comprising the oxygen-deficient heated cigarette of example 2 and a segmented cigarette; as can be seen in figures 5 and 6,

the segmented cigarette comprises a tobacco segment 1 and a filter segment 2 which are detachably connected with each other, wherein one end face and the circumferential side face of the tobacco segment 1 are sealed by air-tight aluminum foil paper, the end which is not sealed in the tobacco segment 1 is provided with an unfilled segment 1-1 which extends axially, the filter segment 2 is provided with an exposed segment 2-1 which is not wrapped by tipping paper, and the unfilled segment 1-1 and the exposed segment 2-1 are matched with each other in shape, so that: the exposed segment 2-1 is inserted into the unfilled segment 1-1 when tobacco segment 1 and filter segment 2 are joined together;

and the unfilled section 1-1 of the tobacco section 1 is also shaped to be inserted into the casing section 6-1-3 of the smoke extraction cone 6-1, and the exposed section 2-1 of the filter section 2 is also shaped to be inserted into the expanded inner diameter section 6-2-3 of the mainstream smoke-forming tube 6-2.

Example 4

An oxygen-deficient heated smoking method using the oxygen-deficient heated smoking set of example 1 and the segmented cigarette of example 3, wherein the smoke extraction element 6 is provided separately from its smoking set, and the smoking method comprises:

during smoking, the tobacco section 1 and the filter tip section 2 of the sectional cigarette are separated and respectively assembled into the sleeve section 6-1-3 and the inner diameter expansion section 6-2-3 at the two ends of the smoke extraction element 6 to form a sectional cigarette A; then the tobacco segment 1 of the sectional cigarette is inserted into the cigarette containing cavity 3, and the heating element 5 is started to suck.

Example 5

A method of oxygen-deficient heated non-burning smoking using the oxygen-deficient heated non-burning cigarette assembly of example 3, the smoke extraction element 6 being secured within the cigarette receiving cavity 3, the method comprising:

during smoking, separating the tobacco section 1 and the filter tip section 2 of the sectional type cigarette, opening a door 4 positioned at the bottom of a cigarette accommodating cavity 3, moving a smoke extraction element 6 through a fixing and limiting mechanism 7, respectively assembling the tobacco section 1 and the filter tip section 2 into a sleeve section 6-1-3 and an inner diameter expansion section 6-2-3 at two ends of the smoke extraction element 6, after the assembly is completed, moving the smoke extraction element 6 to a limiting position, closing the door 4, starting a heating element 5, and smoking;

after the suction is finished, the filter tip section 2 is directly pulled out, the door 4 is opened, the smoke extraction element 6 is moved through the fixing and limiting mechanism 7, so that the tobacco section 1 is at least partially exposed out of the door 4, and the tobacco section 1 is pulled out.

When the door 4 is closed, the boss 4-1 can compress the tobacco segment 1 and realize a sealing effect, and at the moment, the circumferential heating element 5 just completely covers the tobacco segment 1.

Start heating element 5, aspirate, the cigarette props up holds chamber 3 with space 8 has between filter tip section 2, the flue gas extraction component 6, during the suction, the air does not flow through the tobacco section, but gets into through space 8, through-hole 6-2-2, produces the negative pressure because the venturi effect in the inside cavity 6-2-1 department that the flue gas extracted component 6, draws the flue gas that tobacco section 1 produced, forms mainstream smoke after flue gas and air mix, passes through filter tip section 2 gets into the consumer oral cavity.

Wherein the tobacco section 1 and the filter section 2 are assembled into the sleeve section 6-1-3 and the inner diameter expansion section 6-2-3 at both ends of the smoke extraction element 6, respectively, i.e. the tobacco section 1 is inserted from one end of the door 4 and the filter section 2 is inserted from the other end.

The direction of airflow during suction is shown in figure 4. Gaps 8 are arranged between the cigarette accommodating cavity 3 and the filter tip section 2 and between the cigarette accommodating cavity and the smoke extraction element 6. During suction, air does not flow through the tobacco section 1, but enters through the gap 8 and the through hole 6-2-2, negative pressure is generated at the position of the inner cavity 6-2-1 of the smoke extraction element 6 due to the Venturi effect to extract smoke generated by the tobacco section 1, and the smoke is mixed with the air to form mainstream smoke and enters the oral cavity of a consumer through the filter tip section.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.