WO2023130517A1

WO2023130517A1 - Cigarette

Info

Publication number: WO2023130517A1
Application number: PCT/CN2022/073779
Authority: WO
Inventors: 李力群; 陈晨; 乔月梅; 杜赫; 许艳冉; 纪旭东; 郭春生; 叶亚军; 赵赛月; 王伟华; 王嘉绍
Original assignee: 内蒙古昆明卷烟有限责任公司
Priority date: 2022-01-06
Filing date: 2022-01-25
Publication date: 2023-07-13
Also published as: CN114468349B; CN114468349A

Abstract

The present application relates to the technical field of cigarettes, and discloses a cigarette. The cigarette comprises a tobacco shred section, and a filter; the filter comprises a preliminary filtration section, a deposition section, and a refiltration section that are connected in sequence; the deposition section comprises an inner housing and an outer housing sleeved outside the inner housing; one end of the inner housing is open, and connected to one end of the outer housing by means of a connecting face; a buffer chamber is formed inside the inner housing; a deposition chamber is formed between the inner housing and the outer housing; the deposition chamber is provided with a smoke inlet and a smoke outlet; the smoke outlet is provided at the end of the outer housing away from the connecting face; the preliminary filtration section is connected to the tobacco shred section; smoke generated by combustion of the tobacco shred section sequentially passes through the preliminary filtration section, the smoke inlet, the smoke outlet, and the refiltration section. The preliminary filtration section, deposition section, and refiltration section in the cigarette work in conjunction, so that the smoke can be efficiently filtered while retaining aroma components, and harmful substances in the smoke can be deposited in the deposition chamber.

Description

a cigarette

This application claims the priority of the Chinese patent application with the application number 202210013886.8 and the title of the invention "A Cigarette" submitted to the China Patent Office on January 06, 2022, the entire contents of which are incorporated in this application by reference.

technical field

The application relates to a cigarette and belongs to the technical field of cigarettes.

Background technique

At present, my country is the country with the largest cigarette sales in the world. As of 2015, my country's smoking population has reached 316 million. Most of the harmful components in cigarette smoke exist in tar. Tar is the product of incomplete combustion of sugars, proteins and other organic substances in shredded tobacco under anoxic conditions. Its composition structure is extremely complex, and it is composed of various hydrocarbons and complex compounds such as hydrocarbon oxides, sulfides and nitrogen compounds. In the process of smoking, the smoke enters the lungs through the respiratory tract, and most of the tar will adhere to the lungs, causing great harm to the lungs and easily inducing lung cancer.

As consumers pay more and more attention to the safety of cigarettes and their own health, reducing the tar and harm of cigarettes has become a top priority for tobacco companies. According to chemical analysis and research, cigarette mainstream smoke contains harmful substances such as tar, nicotine, and carbon monoxide. At present, the main method of reducing tar and harm of cigarettes is to add adsorbent materials to filter rods of cigarettes to filter smoke. Although it can absorb harmful substances in smoke to a certain extent, the adsorption effect is often not good. , and if the amount of adsorbent material added is too high, the draw resistance of the cigarette will increase, making it difficult to meet people's physiological and psychological needs at the same time, affecting the user's experience.

Contents of the invention

According to various embodiments of the present application, a cigarette is provided. The primary filter section, the sedimentation section and the refilter section in the cigarette cooperate to efficiently filter the smoke while retaining the aroma components, so that the smoke in the smoke Harmful substances can be deposited in the deposition chamber, effectively reducing harmful components such as tar, CO and nicotine in the flue gas, and has a significant effect of reducing tar and harm.

According to one aspect of the present application, a kind of cigarette is provided, and this cigarette comprises:

Tobacco segment;

A filter, which includes a pre-filter section, a sedimentation section and a re-filter section connected in sequence, the sedimentation section includes an inner shell and an outer shell sleeved outside the inner shell, one end of the inner shell is open Set and connected with one end of the outer casing through a connecting surface, a buffer chamber is formed inside the inner casing, a deposition chamber is formed between the inner casing and the outer casing, and the deposition chamber is provided with a smoke inlet and a smoke outlet mouth, the smoke outlet is set at the end of the outer shell away from the connecting surface;

The primary filter section is connected to the shredded tobacco section, and the smoke generated by the combustion of the shredded tobacco section passes through the primary filter section, the smoke inlet, the smoke outlet and the refilter section in sequence.

Optionally, the filter tip further includes an intercepting cap, and an intercepting chamber is formed inside the intercepting cap, and the retaining chamber communicates with the smoke outlet, and the retaining chamber is provided with a first through hole and a second through hole, The flue gas in the deposition chamber enters the interception chamber through the first through hole, and flows to the refilter section through the second through hole.

Optionally, one end of the outer casing away from the connecting surface is fully opened to form the smoke outlet;

The intercepting cap includes a communicating engaging section and a first connecting section, the first connecting section is arranged in the deposition chamber, and the radial cross-sectional area of the first connecting section is smaller than the diameter of the outer shell In terms of cross-sectional area, the engaging section is covered above the smoke outlet to seal the smoke outlet;

The first through hole is arranged on the side wall of the first connecting section, and the second through hole is arranged on the top of the engaging section.

Optionally, the retention cap further includes a second connecting section, the second connecting section is arranged between the first connecting section and the engaging section, and the second connecting section is arranged in the deposition chamber and the outer side wall of the second connecting section abuts against the inner side wall of the outer casing.

Optionally, the area ratio of the first through hole to the smoke inlet is (0.006-0.05):1.

Optionally, the area ratio of the second through hole to the first through hole is (4-30):1.

Optionally, the ratio of the area of the smoke outlet to the area of the smoke inlet is (55-145):1.

Optionally, the ratio of the heights of the first connection section, the second connection section and the outer casing is (0.1-0.2):(0.05-0.1):1.

Optionally, the height of the inner shell is smaller than the height of the outer shell, and the end of the inner shell away from the connecting surface is a closed end; and

The smoke inlet is arranged at the connection between the connection surface and the inner casing; or

The smoke inlet is arranged on the side wall of the inner casing.

Optionally, there are at least two smoke inlets, which are evenly distributed along the circumference of the inner casing.

Optionally, the ratio of the distance between the smoke inlet and the connection surface to the height of the inner casing is (0.2-1):1.

Optionally, a height ratio of the inner casing to the outer casing is (0.3-0.7):1.

Optionally, the inner shell and the outer shell are arranged on the same central axis, and the diameter ratio of the outer shell to the inner shell is (1.5-3):1.

Optionally, the ratio of the heights of the primary filtration section, the sedimentation section and the refiltration section is (1.2-1.5):1:(0.5-1.5), preferably (1.2-1.5):1:(0.9-1.1) , more preferably 1.2:1:0.9.

Optionally, an air inlet is provided at the end of the outer casing away from the connection surface, and the height of the air inlet is not lower than that of the inner casing.

Optionally, the tobacco leaves used in the shredded tobacco are from Hunan, Yunnan and Guizhou.

Optionally, the cigarette paper of the cigarette has an air permeability of 40-70CU and a grammage of 25-40g/m ² , and the cigarette paper can reduce the draw resistance of the cigarette and increase the aroma of the cigarette.

The beneficial effects of this application include but are not limited to:

1. According to the cigarette of the present application, the pre-filter section, the deposition section and the re-filter section are arranged to cooperate, and the pre-filter section and the re-filter section can respectively filter the flue gas entering the deposition section or the flue gas flowing out from the deposition section, further Reduce harmful substances and impurity particles in the smoke, avoid impurities from blocking the smoke inlet or outlet, thereby reducing the suction resistance, improving the cleanliness of the smoke without reducing the aroma components in the smoke, and improving the user's sense of use .

2. According to the cigarette of the present application, by setting the ratio of the height of the inner shell to the outer shell, and then coordinating the volume ratio of the buffer chamber and the deposition chamber, the smoke can have a long enough flow path to ensure the removal of harmful substances in the smoke. retention efficiency.

3. According to the cigarette of the present application, the smoke inlet is arranged at the joint between the connection surface and the inner shell, so that part of the smoke can circulate in the buffer chamber and then enter the deposition chamber through the smoke inlet. The setting of the buffer chamber The path of flue gas flow is extended, the temperature of flue gas is reduced, the temperature of flue gas is avoided from being too high, and the experience of smoking cigarettes is improved.

4. According to the cigarette of the present application, the air inlet can further reduce the draw resistance, achieve the effect of intercepting the smoke aerosol, improve the ease of smoking the cigarette, and reduce the temperature of the smoke. The particulate matter is further deposited on the inner wall of the outer casing, further reducing harmful substances in the flue gas.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

Fig. 1 is the schematic side sectional view of the filter tip and shredded tobacco segment involved in Embodiment 1 of the present application;

Fig. 2 is a schematic structural view of a schematic embodiment of the filter tip involved in Example 1 of the present application;

Fig. 3 is a schematic structural view of a schematic embodiment of the filter tip involved in Example 1 of the present application;

Fig. 4 is a schematic side sectional view of a filter tip and a shredded tobacco segment involved in Example 2 of the present application;

Fig. 5 is a schematic structural view of a schematic embodiment of a filter tip involved in Example 2 of the present application;

Figure 6 is a schematic side sectional view of the filter tip involved in Example 3 of the present application;

Figure 7 is a schematic structural view of the retention cap involved in Embodiment 3 of the present application;

Fig. 8 is a schematic side sectional view of the filter tip involved in Example 4 of the present application;

List of parts and reference numbers:

10. Sedimentation section; 11. Outer shell; 12. Inner shell; 13. Sedimentation chamber; 14. Buffer chamber; 15. Connection surface; 16. Smoke inlet; 17. Smoke outlet; 20. Primary filter section; 21 22. Adsorption particles; 23. Flavoring particles; 30. Tobacco section; 41. First connection section; 42. Second connection section; 43. Engagement section; 44. First through hole.

Implementation

In order to explain the overall concept of the present application more clearly, the following detailed description will be given by way of examples in combination with the accompanying drawings.

In order to better understand the above-mentioned purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from those described here, therefore, the protection scope of the present application is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings , is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two components or the interaction relationship between two components . Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The present application is described in detail below in conjunction with the examples, but the present application is not limited to these examples.

Unless otherwise specified, the raw materials in the examples of the present application were purchased through commercial channels.

Analytic method is as follows in the embodiment of the application:

According to the standard detection method, the physical indicators of cigarettes 1#-5# and blank cigarettes, as well as tar, nicotine, CO, phenol, benzo[α]pyrene, NNK, ammonia, hydrogen cyanide, crotonaldehyde and aroma in mainstream smoke The release of components was measured. The cigarettes used were equilibrated for 48 hours under the conditions of temperature (22±1)°C and relative humidity (60±2)% before the experiment, and then sorted by mass (average mass ±0.02g) and draw resistance (average draw resistance ±49Pa). Produce qualified test cigarettes. Two sets of parallel tests were carried out for each sample, and the average value was taken as the test result.

The formula for calculating the cigarette hazard index (evaluation index) is:

H＝(A/14.2+B/5.5+C/10.9+D/18.6+E/17.4+F/8.1+G/146.3)x10/7

Among them: A is the release amount of CO (mg/branch), B is the release amount of 4-methylnitrosamine-1-(3-pyridyl)-1-butanone (NNK) (ng/branch), and C is Benzo[α]pyrene release amount (ng/branch), D is crotonaldehyde release amount (μg/branch), E is phenol release amount (ug/branch), F is ammonia release amount (ug/branch), G is Release amount of hydrocyanic acid (μg/support).

Analysis method of aroma components in mainstream smoke of cigarettes: according to the method of GB/T19609-2004, use a rotary smoking machine to smoke. The smoking parameters are the parameters under the ISO mode: the suction volume is 35mL, the duration is 2s, the puffing interval is 60s, and the mainstream smoke particulate matter of 20 cigarettes is captured with a 92mm Cambridge filter.

The pretreatment method of the smoke sample: After the cigarette sample is sucked, fold up the filter piece that has captured the particulate matter, wipe off the condensate on the trap, and put it into the conical flask. For heat-not-burn cigarettes, 4 filters need to be combined. Take 2 Cambridge filter discs and cut them into pieces and put them into a 50mL conical flask with a stopper, add 20mL dichloromethane to the conical flask for ultrasonic extraction for 30min, after standing still, pass the extract through an organic membrane and place it in a concentrated bottle, add 1mL of acetic acid Phenylethyl ester internal standard solution, the extract was concentrated to 1 mL at 60°C for GC-MS analysis.

Gas chromatography-mass spectrometry conditions: chromatographic column: HP-5MS (60m x 250μm x 0.25μm); inlet temperature: 280°C; injection volume: 1μL; split ratio: 5:1; heating program: 50°C (keep 2min ), then rise to 280°C at 4°C/min (keep 20min); mass spectrometry conditions: transfer line temperature: 280°C; EI source electron energy: 70eV; electron multiplier voltage: 1650v; mass scanning range: 35-550amu; Source temperature: 230°C; quadrupole temperature: 150°C; use the mass spectrometry particle flow diagram of the volatile components collected from the Nist11 database for analysis and identification. After manual analysis and comparison with the standard mass spectrum and retrieval, and finally chromatographic analysis and check with the standard known compounds in the laboratory, the standard substance spectrum library including retention time is checked to determine the chemical structure and relative composition of each separated component. content.

Example 1

Referring to Fig. 1-2, the present embodiment discloses a kind of cigarette, and this cigarette comprises: shredded tobacco section 30; Filter tip, and filter tip comprises the primary filter section 20, sedimentation section 10 and refilter section 21 connected in sequence, and deposition section 10 comprises inner shell body 12 and an outer shell 11 sleeved outside the inner shell 12, one end of the inner shell 12 is open and connected to one end of the outer shell 11 through a connection surface 15, a buffer cavity 14 is formed inside the inner shell 12, and the inner shell 12 12 and the outer casing 11 form a deposition chamber 13, the deposition chamber 13 is provided with a smoke inlet 16 and a smoke outlet 17, and the smoke outlet 17 is arranged at the end of the outer casing 11 away from the connecting surface 15; the primary filter section 20 and the shredded tobacco section 30, the flue gas produced by the combustion of the shredded tobacco section 30 passes through the primary filter section 20, the smoke inlet 16, the smoke outlet 17 and the refilter section 21 in sequence.

The smoke generated by the shredded tobacco section 30 first enters the primary filter section 20 for preliminary filtration, flows through the buffer chamber 14 for buffering, and enters the deposition chamber 13 from the smoke inlet 16, and then flows out of the smoke outlet 17 to the re-filter section 21 for re-filtering , and then into the user's mouth. Part of the flue gas circulates in the buffer chamber 14 and then enters the deposition chamber 13 through the smoke inlet 16. The flue gas can stay in the buffer chamber 14 for a certain period of time, and then the flue gas realizes the first collision in the buffer chamber 14, so that the flue gas Harmful substances in the gas are partially deposited to increase the effect of reducing coke and harm; in addition, the setting of the buffer chamber 14 can change the path of the flue gas, reduce the temperature of the flue gas, avoid excessive flue gas temperature, and improve the experience of smoking cigarettes. After the flue gas in the buffer chamber 14 enters the deposition chamber 13, the flow space of the flue gas becomes larger, which can reduce the suction resistance of the flue gas, and the flue gas can stay in the deposition chamber 13 for a short time, and a certain amount of flue gas can be guaranteed. Concentration, increase the aroma components of the smoke; the smoke in the deposition chamber 13 moves freely, and when the smoke hits the side walls of the inner shell 12 and the outer shell 11, it can generate aerosol deposition, thereby dispelling the smoke in the smoke Harmful substances are deposited into the deposition chamber 13 . The pre-filter section 20, the deposition section 10 and the re-filter section 21 that are provided cooperate, and the pre-filter section 20 and the re-filter section 21 can respectively filter the flue gas entering the deposition section 10 or the flue gas flowing out from the deposition section 10, further reducing the Harmful substances and impurity particles in the smoke can prevent impurities from blocking the smoke inlet 16 or the smoke outlet 17, thereby reducing the suction resistance, improving the cleanliness of the smoke without reducing the aroma components in the smoke, and improving the user's use feel.

The draw resistance in this embodiment refers to the draw resistance when the user draws smoke.

Specifically, the outer casing 11, the primary filter section 20 and the refilter section 21 are cylinders adapted to existing cigarettes. The primary filtering section 20 and the re-filtering section 21 can be made of the same material or different materials, as long as the preliminary filtering and re-filtering of the flue gas can be ensured respectively.

Specifically, this embodiment does not limit the shape of the inner shell 12, as long as it can be sleeved in the outer shell 11 and form a deposition chamber 13 with the outer shell 11, for example, it can be a cylinder, a prism, or a pyramid. etc., preferably a cylinder.

Specifically, this embodiment does not specifically limit the connection form of the end of the inner shell 12 and the outer shell 11 away from the connecting surface 15. For example, the height of the inner shell 12 is equal to the height of the outer shell 11. Referring to FIG. 3, the inner shell The body 12 is also connected to the end of the outer body 11 away from the connecting surface 15. At this time, the deposition chamber 13 is composed of the outer wall of the inner body 12 and the inner wall of the outer body 11; When height, with reference to Fig. 2, then inner housing 12 is arranged on the inside of outer housing 11 away from the end of connecting surface 15, at this moment deposition chamber 13 is made up of the outer wall of inner housing 12, the top of inner housing 12 and the inner wall of outer housing 11 composition. The above-mentioned connection forms can all form a deposition chamber 13, which can carry out deposition and filtration of flue gas.

Specifically, this embodiment does not limit the material of the inner shell 12 and the outer shell 11, which can be silica gel, smoke powder, polypropylene, polyethylene, polycarbonate, etc., as long as the interception of harmful substances can be achieved; The materials of the inner casing 12 and the outer casing 11 can be the same or different. Preferably, the inner shell 12 and the outer shell 11 are made of silica gel.

Specifically, in this embodiment, the position of the smoke inlet 16 is not limited, as long as the smoke generated by the shredded tobacco section 30 of the cigarette can be led to the filter tip.

As an embodiment, the length of the initial filtration section 20, the sedimentation section 10 and the refiltration section 21 is (1.2-1.5):1:(0.5-1.5), preferably (1.2-1.5):1:(0.9-1.1 ), more preferably 1.2:1:0.9. The length of the primary filter section 20 is the longest, which can block the larger impurities in the flue gas, reduce the amount of impurities entering the flue gas in the deposition chamber 13, and prevent impurities from blocking the smoke inlet 16, which is beneficial to the flue gas in the deposition chamber 13. It can move freely inside the deposition chamber, thereby increasing the collision degree of the flue gas in the deposition chamber 13, so that the harmful substances in the flue gas adhere to the deposition chamber 13; the short refilter section 21 is convenient for the user to hold, and can further protect the fume Air is filtered to improve the coke and harm reduction effect of the filter tip.

As an embodiment, the primary filter section 20 and the refilter section 21 are cellulose acetate filter sticks, and adsorption particles 22 are arranged in the cellulose acetate filter sticks. Acetate fiber filter rod has small suction resistance, which is beneficial to the passage of flue gas, has good thermal stability, and can also block impurity particles in the flue gas. loss of aroma components. Flavoring particles 23 can also be set in the cellulose acetate filter rod in addition, to increase the fragrance in the flue gas, this flavoring particles 23 is preferably the particle that tobacco powder and binding agent are made, and flue gas temperature is generally all higher, relatively When the high smoke comes into contact with the particles made of smoke powder and binder, the smoke powder can absorb the heat of the smoke and have a cooling effect on the smoke, and at the same time release aerosols to enhance the aroma of the smoke. In addition, the re-filter section 21 is near the lip of the cigarette, and the choice of cellulose acetate filter rod can endow the re-filter section 21 with elasticity to meet the physiological and psychological needs of users during use.

As an embodiment, referring to FIG. 2 , the height of the inner housing 12 is smaller than that of the outer housing 11 , the end of the inner housing 12 away from the connecting surface 15 is a closed end, and the smoke inlet 161 is provided on the side wall of the inner housing 1212 . Under this setting, the flue gas first enters the buffer chamber 14, then enters the deposition chamber 13 through the smoke inlet 16, and finally flows out at the smoke outlet 17. During the flow of the flue gas in the buffer chamber 14 and the deposition chamber 13, the flue gas flows to the smoke inlet. At port 16, the movement direction of the flue gas changes, and at the same time changes the flow velocity of the flue gas, increases the kinetic energy of the flue gas flow, increases the inertial force of the flue gas colliding with the inner wall of the outer casing 11, and makes the flue gas deposit on the inner wall of the outer casing 11. At the same time, the flue gas flows in the deposition chamber 13, and the closer to the outer shell 11, the heat dissipation conditions are the best, and the temperature is the lowest, so the flue gas tends to move to the inner wall of the outer shell 11, which is more conducive to the deposition of harmful substances in the flue gas .

Specifically, the smoke inlets 16 may or may not be located on the same horizontal line. When they are located on the same horizontal line, they can be evenly distributed on the side wall of the inner casing 12, or unevenly distributed on the side wall of the inner casing 12. Specifically, the shape and size of each smoke inlet 16 can be the same or different, for example, the smoke inlet 16 can be a circular through hole, a square through hole or a triangular through hole, etc., which is not limited in this embodiment , as long as the flue gas flow can be ensured. In this embodiment, the smoke inlets 16 are located on the same horizontal line, and each smoke inlet 16 has the same shape and size.

As an embodiment, there are at least two smoke inlets 16, which are evenly distributed along the circumference of the inner casing 12. This arrangement can ensure that the smoke flows out from both sides of the inner casing 12 evenly and enters the deposition chamber 13. Inside, to ensure the smooth flow of flue gas.

As an implementation manner, one end of the outer casing 11 away from the connecting surface 15 is fully opened to form a smoke outlet 17 . The smoke outlet 17 in this setting mode provides a flow space for the movement of the smoke in the deposition chamber 13 when the user smokes, thereby reducing the suction resistance, ensuring a sufficient amount of smoke, and improving the user's smoking experience.

As an implementation, the height ratio of the inner shell 12 to the outer shell 11 is (0.3-0.7): 1, preferably 0.4: 1. By setting the height ratio of the inner shell 12 to the outer shell 11, the buffering can be coordinated The volume ratio between the chamber 14 and the deposition chamber 13 can make the flue gas have a sufficiently long flow path, and ensure the interception efficiency of harmful substances in the flue gas. If the inner casing 12 is too short, the volume of the buffer chamber 14 is too small to achieve preliminary deposition of the flue gas, resulting in poor coke reduction effect; if the inner casing 12 is too long, the volume of the deposition chamber 13 is too small to be able to Play a role in reducing suction resistance.

Specifically, the length of the inner casing 12 is 0.9-13mm, preferably 7mm.

As an implementation manner, the inner casing 12 and the outer casing 11 are arranged on the same central axis. This setting method can ensure uniform smoke concentration in the radial direction in the smoke channel, improve the effect of coke reduction and harm reduction, and improve the user's smoking experience.

As an embodiment, both the inner shell 12 and the outer shell 11 are cylinders, and the diameter ratio of the outer shell 11 to the inner shell 12 is (1.5-3):1, preferably 2:1. Specifically, the outer circumference of the outer casing 12 is a cylinder adapted to existing cigarettes, and the outer circumference of the outer casing 12 can be changed according to the thickness of cigarettes manufactured in the prior art, and the outer circumference of the outer casing 12 can be 17 -50mm. Combined with the height ratio of the inner casing 12 and the outer casing 11, the volume ratio between the buffer chamber 14 and the deposition chamber 13 can be further coordinated, the removal rate of harmful substances in the flue gas can be improved, and the suction resistance can be reduced at the same time to meet the The psychological and physical needs of users.

As an embodiment, the ratio of the distance between the smoke inlet 16 and the connection surface 15 to the height of the inner casing 12 is (0.2-1):1, preferably 0.6:1. This arrangement can prolong the flow path of the flue gas in the buffer chamber 14, and at the same time prevent the flue gas from staying between the smoke inlet 16 and the connecting surface 15 of the outer shell 11, resulting in a flow dead angle, so that the harmful components in the flue gas More effectively trapped in the deposition chamber 13, reducing harmful substances in the smoke entering the oral cavity.

As an embodiment, the ratio of the area of the smoke outlet 17 to the area of the smoke inlet 16 is (55-145):1, preferably (90-130):1, more preferably 126.7:1. By setting the ratio of the area of the smoke inlet 16 to the smoke outlet 17, the amount of smoke in and out of the deposition chamber 13 can be ensured, and the residence time of the smoke in the deposition chamber 13 can be controlled to improve the user's suction experience and The efficiency of reducing coke and harm to flue gas.

Example 2

Referring to Figures 4-5, the difference between this embodiment and Embodiment 1 is that the end of the inner casing 12 away from the connection surface 15 is a closed end, and the smoke inlet 16 is arranged at the connection between the connection surface 15 and the inner casing 12 Part of the flue gas can be circulated in the buffer chamber 14 and then enter the deposition chamber 13 through the smoke inlet 16. The flue gas first moves upward into the buffer chamber 14, and then moves downward through the lower smoke inlet 16 to enter the deposition chamber. 13, so that the flue gas can stay in the buffer chamber 14 for a longer time, and then the flue gas achieves the first collision in the buffer chamber 14, so that the harmful substances in the flue gas can be preliminarily deposited, and the effect of reducing coke and harm is increased; in addition, the buffer chamber The setting of 14 prolongs the path of flue gas flow, reduces the temperature of flue gas, avoids excessive temperature of flue gas, and improves the experience of smoking cigarettes.

As an embodiment, there are at least two smoke inlets 16 , which are evenly distributed along the circumference of the inner casing 12 , that is, the smoke inlets 16 are evenly distributed at the joint between the connection surface 15 and the inner casing 12 . This setting method can ensure uniform smoke concentration in the radial direction in the smoke channel, improve the effect of coke reduction and harm reduction, and improve the user's smoking experience.

As an implementation, this embodiment does not limit the shape of the smoke inlet 16 , for example, it may be triangular, quadrilateral, circular or elliptical, as long as the smoke can enter the deposition chamber 13 through the smoke inlet 16 . Specifically, the smoke inlet 16 is a square with a side length of 0.424mm.

The deposition section 10 in the above arrangement can be integrally formed, which is convenient for industrial production and processing, improves the molding efficiency of the deposition section 10, and is suitable for mass production.

As an embodiment, an air inlet is provided on the side wall of the outer casing 11, and the air inlet is arranged at the end of the outer casing 11 away from the connecting surface 15, and the height of the air inlet is not lower than that of the inner casing 12. high. By opening an air inlet on the side wall of the outer shell 11, the flue gas and air are fully mixed in the deposition chamber 13, the flue gas can be diluted, and the concentration of carbon monoxide in the flue gas can be effectively reduced, and the air inlet can further reduce Draw resistance, to achieve the effect of intercepting the smoke aerosol, improve the ease of smoking cigarettes, and reduce the temperature of the smoke. The lower temperature makes the particulate matter in the smoke further deposited on the inner wall of the outer shell 11, further reducing the Harmful substances in smoke.

Specifically, this embodiment does not limit the shape of the air inlet, for example, it may be triangular, quadrilateral, pentagonal, hexagonal, circular or elliptical, as long as the air can enter. Specifically, the shape of the air inlet is elliptical, which is less difficult to form, easy to demould, and can have a high degree of coincidence with the laser drilling position to ensure the air intake, thereby further ensuring the reduction of suction resistance, coke reduction and cooling.

As an embodiment, the ratio of the distance between the center of the air inlet and the smoke outlet 17 to the height of the outer casing 11 is (0.1-0.3):1, preferably 0.1:1. The position of the air inlet affects the cooling effect of the flue gas and the dilution effect of the flue gas. The closer the air inlet is to the primary filter section 20, the air entering the air inlet will be in contact with the flue gas that has not been decoked and harm-reduced first. , leading to slow down the movement speed of the flue gas entering the deposition chamber 13, reducing the collision probability of the flue gas and the deposition chamber 13, thereby reducing the deposition effect of the flue gas; if the air inlet is closer to the refilter section 21, the incoming air cannot Cooling the flue gas will result in uneven cooling of the flue gas, resulting in poor taste of the cigarette. In addition, there will be a phenomenon that the air inlet is directly connected to the cigarette outlet 17, resulting in insufficient flavor of the flue gas during the smoking process of the user. affect user experience.

Specifically, the length of the outer casing 111 is 3-200mm, preferably 3-30mm, more preferably 14mm, and the distance between the center of the air inlet 8 and the smoke outlet 173 is 0.1-14mm, preferably 5.6mm.

As an embodiment, the ratio of the area of the air inlet to the smoke inlet 16 is (50-650):1, preferably 100-400:1, more preferably 261:1. By controlling the ratio between the air inlet and the smoke inlet 16, and then controlling the ratio between the air entering the mouth and the flue gas, the air can reduce the coke and the temperature of the flue gas, prevent the flue gas from being too high, and at the same time ensure that the flue gas The concentration of the gas and the richness of the aroma enhance the user's inhalation experience.

Specifically, the area of the air inlet is 4.5-60 mm ² , preferably 47.1 mm 2 , and the area of the smoke inlet 16 is 0.09-1 mm ² , preferably 0.18 mm ² .

Example 3

Referring to Figures 6-7, this embodiment adds a retention cap on the basis of Embodiment 1. A retention chamber is formed inside the retention cap, and the retention chamber communicates with the smoke outlet 17. The retention chamber is provided with a first through hole 44 and a second through hole. Two through holes, the flue gas in the deposition chamber 13 enters the interception chamber through the first through hole 44 , and flows to the refilter section 21 through the second through hole. With the interception cap set, the flue gas flowing out from the smoke outlet 17 enters the interception chamber again, which changes the flow path of the flue gas again, prolongs the flow distance of the flue gas, and makes the harmful substances be eliminated again during the flow of the flue gas. Effectively trapped in the trapped cavity, the harmful components in the smoke entering the oral cavity are further reduced, and the harmfulness of cigarettes is reduced. Due to the setting of the first through hole 44, when the flue gas flows into the trapping chamber, there is a relatively large negative pressure at the first through hole 44, which changes the orderly radial movement of the flue gas and increases the pressure of the flue gas in the trapping chamber. Time, so that the flue gas has a better deposition effect under a long-term temperature change.

Specifically, this embodiment does not limit the shape of the interception cap, for example, it can be a cylinder, a square cylinder or a triangular cylinder, as long as the harmful substances in the flue gas can be intercepted. In this embodiment, the interception cap Take a cylinder as an example.

As an embodiment, the outer casing 11 is fully open at one end away from the connecting surface 15 to form the smoke outlet 17; the intercepting cap includes a communicating engaging section 43 and a first connecting section 41, the first connecting section 41 is arranged on the deposition In the cavity 13, and the radial cross-sectional area of the first connecting section 41 is smaller than the radial cross-sectional area of the outer shell 11, the engaging section 43 covers the top of the smoke outlet 17 to seal the smoke outlet 17; the first through hole 44 is arranged on the side wall of the first connecting section 41 , and the second through hole is arranged on the top of the engaging section 43 .

The engaging section 43 is used to cover the smoke outlet 17, so that the smoke in the deposition chamber 13 must pass through the second through hole to flow out to the refilter section 21. The setting of the first connecting section 41 and the first through hole 44 facilitates The flue gas in the deposition chamber 13 smoothly flows into the intercepting chamber, and when the flue gas flows to the first through hole 44, the flow path of the flue gas changes again, increasing the collision probability of the flue gas with the deposition chamber 13 and the intercepting chamber, thereby Improve the gas phase deposition efficiency of harmful substances in the flue gas, so that the flue gas can be filtered multiple times, greatly improving the purification effect of the flue gas.

As an embodiment, the first connecting section 41 and the outer casing 11 are arranged on the same central axis, the first connecting section 41 is a cylinder, and the ratio of the diameter of the first connecting section 41 to the diameter of the outer casing 11 is 0.6-0.8: 1, preferably 0.8:1.

As an embodiment, the retention cap also includes a second connection section 42, the second connection section 42 is arranged between the first connection section 41 and the engagement section 43, the second connection section 42 is arranged in the deposition chamber 13, and the second connection section 42 The outer sidewalls of the two connecting sections 42 abut against the inner sidewalls of the outer casing 11 . The second connecting section 42 and the outer casing 11 are engaged with each other, which can prevent smoke from flowing into the oral cavity from the gap between the engaging section 43 and the smoke outlet 17, and ensure the retention rate of harmful components; it can also increase the deposition chamber 13 The effective area of the inner interception cap improves the interception effect on flue gas.

As an implementation manner, the area ratio of the first through hole 44 to the smoke inlet 16 is (0.006-0.05):1. Preferably 0.02:1. By setting the ratio of the opening area between the first through hole 44 and the smoke inlet 16, the harmful substances in the smoke can be effectively trapped, while ensuring the smooth flow of the smoke and avoiding excessive flow resistance of the smoke , reduce suction resistance.

As an implementation manner, the area ratio of the second through hole to the first through hole 44 is (4-30):1. 20:1 is preferred. By setting the opening area between the first through hole 44 and the first through hole 44, the harmful substances in the flue gas can be effectively intercepted, and at the same time, the smooth flow of the flue gas can be ensured, and the excessive flow resistance of the flue gas can be avoided. Reduced resistance to draw.

Optionally, the ratio of the area of the smoke outlet 17 to the area of the smoke inlet 16 is (55-145):1, preferably (90-130):1, more preferably 126.7:1. By setting the ratio of the area of the smoke inlet 16 to the smoke outlet 17, the amount of smoke in and out can be ensured, and the user's smoking experience can be improved.

As an implementation manner, the ratio of the heights of the first connecting section 41 , the second connecting section 42 to the outer casing 11 is (0.1-0.2):(0.05-0.1):1, preferably 0.1:0.1:1. Under the above settings, it can be ensured that the first connecting section 41 and the second connecting section 42 have a certain effective area in the deposition chamber 13, which can increase the area of the deposition chamber 13 and the trapping chamber in contact with the flue gas. On the one hand, it provides sufficient The deposition time improves the filtering effect of harmful substances in the flue gas. On the other hand, because the flue gas stays in the deposition chamber 13 and the interception chamber respectively, the overall residence time of the flue gas in the filter is prolonged, which can reduce the temperature of the flue gas. The flue gas cooling effect is enhanced, so the length of other cooling parts of the cigarette can be reduced, and the miniaturization of the product can be promoted.

As an implementation, there are at least two first through holes 44, and they are evenly arranged on the side wall of the first connecting section 41. This arrangement facilitates the uniform entry of the smoke in the deposition chamber 13 into the interception chamber, thereby making the smoke Deposition is more uniform.

As an embodiment, the ratio of the distance between the first through hole 44 and the smoke inlet 16 to the height of the outer shell 11 is (0.1-0.4): 1, preferably 0.4: 1, which is beneficial to the deposition chamber 13 Cooperating with the trapping chamber, it changes the movement path of the smoke in turn, which facilitates the deposition of harmful substances, and at the same time reduces the suction resistance of the smoke and improves the ease of smoking.

Example 4

Referring to FIG. 8 , in this embodiment, an interception cap is added on the basis of embodiment 2. The specific structure of the interception cap is the same as that in embodiment 4, and will not be repeated here.

Example 5

Cooperate the filter tip in the above-mentioned embodiment 1-4 with the shredded tobacco section to obtain cigarettes 1#-4# respectively, wherein in cigarettes 1#-4#, the ratio of the height of the inner casing to the outer casing is 0.4:1, and the outer casing The ratio to the diameter of the inner casing is 2:1, the ratio of the area of the smoke outlet to the area of the smoke inlet is 126.7:1, and the length of the primary filter section, sedimentation section and refilter section is 1.2:1:0.9; The ratio of the distance between the smoke inlet and the connecting surface to the height of the inner casing in 1# is 0.6:1, and the ratio of the distance between the center of the air inlet and the smoke outlet to the height of the outer casing in cigarette 2# is 0.1:1, the ratio of the area of the air inlet to the smoke inlet is 261:1, there are two first through holes in the cigarette 3#-4#, and the ratio of the area of the first through hole to the smoke inlet is 0.02: 1. The ratio of the area of the second through hole to the first through hole is 20:1, the ratio of the height of the first connecting section, the second connecting section to the outer casing is 0.1:0.1:1, the ratio of the first through hole to the smoke inlet The ratio of the distance between the ports to the height of the outer casing is 0.4:1, and the ratio of the diameter of the first connecting section to the diameter of the outer casing is 0.8:1. Cigarette 5# was also prepared, wherein cigarette 5# used the filter tip of Example 3, and the difference between cigarette 5# and cigarette 3# was that there were four first through holes.

The length of the shredded tobacco section of cigarette 1#-4# is 59mm, the length of the filter tip is 25mm, the circumference of the cigarette is 24mm, the cigarette paper: 32A70W ordinary cigarette paper, the width is 26.2mm; the tipping paper width is 64mm, and the weight is 32g /m ² , the air permeability is 70CU; high-speed lapping glue and high-speed splicing glue are used for assembly, and blank cigarettes are prepared. The filter tip in the blank cigarette is ordinary acetate filter rod, and 6.0Y-17000D tow is selected. The above-mentioned blank cigarettes and cigarettes 1#-5# were tested. The test contents included: detection of mainstream smoke components, detection of harmful components of mainstream smoke, and detection of aroma components of mainstream smoke. The specific results are as follows:

Table 1 Mainstream smoke components of blank cigarettes and cigarettes 1#-5#

Table 2 Harmful components in mainstream smoke of blank cigarettes and cigarettes 1#-5#

Note: The evaluation index in Table 2 refers to the hazard index. The larger the value, the more harmful the cigarette is to the human body.

Table 3 Aroma components in mainstream smoke of blank cigarettes and cigarettes 1#-5# (all in μg/stick)

According to the test results of above-mentioned cigarettes 1#-5# and blank cigarettes, tar, nicotine, hydrocyanic acid, benzo[α]pyrene, phenol, crotonaldehyde, NNK, etc. The filter tip of 1-4 can effectively reduce various harmful components of cigarette smoke, has a significant effect of reducing tar and reducing harm, and the effect of reducing tar and harm is relatively stable. Although the aroma components of the smoke in cigarettes 1#-5# are reduced under the filtering of the filter, they can still satisfy the user experience, and the reduction rate of the total amount of aroma components is lower than the reduction rate of tar. The reduction rate of the hazard index is higher than or equivalent to the reduction rate of the total amount of flavor components, reducing the harm of cigarettes while ensuring user experience.

The foregoing descriptions are merely examples of the present application, and the protection scope of the present application is not limited by these specific examples, but is determined by the claims of the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modifications, equivalent replacements, improvements, etc. made within the technical ideas and principles of this application shall be included within the scope of protection of this application.

Claims

A cigarette, characterized in that it comprises:

Tobacco segment;

A filter, which includes a pre-filter section, a sedimentation section and a re-filter section connected in sequence, the sedimentation section includes an inner shell and an outer shell sleeved outside the inner shell, one end of the inner shell is open Set and connected with one end of the outer casing through a connecting surface, a buffer chamber is formed inside the inner casing, a deposition chamber is formed between the inner casing and the outer casing, and the deposition chamber is provided with a smoke inlet and a smoke outlet mouth, the smoke outlet is set at the end of the outer casing away from the connecting surface;

The primary filter section is connected to the shredded tobacco section, and the smoke generated by the combustion of the shredded tobacco section passes through the primary filter section, the smoke inlet, the smoke outlet and the refilter section in sequence.
The cigarette according to claim 1, wherein the filter tip further comprises an intercepting cap, and an intercepting chamber is formed inside the intercepting cap, and the intercepting chamber communicates with the smoke outlet, and the intercepting chamber is provided with a second A through hole and a second through hole, the flue gas in the deposition chamber enters the intercepting chamber through the first through hole, and flows to the refilter section through the second through hole.
The cigarette according to claim 2, characterized in that, one end of the outer shell away from the connection surface is fully open to form the smoke outlet;

The intercepting cap includes a communicating engaging section and a first connecting section, the first connecting section is arranged in the deposition chamber, and the radial cross-sectional area of the first connecting section is smaller than the diameter of the outer shell In terms of cross-sectional area, the engaging section is covered above the smoke outlet to seal the smoke outlet;

The first through hole is arranged on the side wall of the first connecting section, and the second through hole is arranged on the top of the engaging section.
The cigarette according to claim 3, wherein the intercepting cap further comprises a second connecting section, the second connecting section is arranged between the first connecting section and the engaging section, the first connecting section Two connecting sections are arranged in the deposition chamber, and the outer sidewall of the second connecting section abuts against the inner sidewall of the outer casing.
The cigarette according to claim 4, characterized in that the ratio of the area of the first through hole to the smoke inlet is (0.006-0.05): 1; and/or

The area ratio of the second through hole to the first through hole is (4-30):1.
The cigarette according to claim 4, characterized in that the ratio of the heights of the first connecting section, the second connecting section and the outer casing is (0.1-0.2):(0.05-0.1):1.
The cigarette according to any one of claims 1-6, characterized in that, the height of the inner shell is smaller than the height of the outer shell, and the end of the inner shell away from the connection surface is a closed end; and

The smoke inlet is arranged at the connection between the connection surface and the inner casing; or

The smoke inlet is arranged on the side wall of the inner casing.
The cigarette according to claim 7, characterized in that, the ratio of the distance between the smoke inlet and the connecting surface to the height of the inner casing is (0.2-1):1.
The cigarette according to claim 7, characterized in that the ratio of the heights of the inner shell to the outer shell is (0.3-0.7): 1; and/or

The ratio of the lengths of the primary filtration section, the sedimentation section and the refiltration section is (1.2-1.5):1:(0.5-1.5).
The cigarette according to claim 7, wherein an air inlet is provided at the end of the outer casing away from the connection surface, and the height of the air inlet is not lower than that of the inner casing.