Tobacco cigarette having partitioned cooling function and cooling method

Abstract

A tobacco cigarette having a partitioned cooling function, comprising: a tobacco segment (1), a supporting segment (2), a cooling segment (3), and a filtering segment (4). Packaging paper (5) wraps surfaces of the tobacco segment (1), the supporting segment (2), the cooling segment (3), and the filtering segment (4), so as to connect these segments. The cooling segment (3) is of a hollow structure and is provided with partition walls (3.3) in an axial direction. The partition walls (3.3) divide the cooling segment (3) into a central zone and side surface zones in a radial direction. Air holes (3.1) communicating the side surface zones with the outer surface of the packaging paper (5) are further formed in an outer wall (3.2) of the cooling segment (3) in the radial direction. The cooling segment (3) undergoes partitioned cooling while introducing room temperature air through the air holes (3.1), thereby effectively reducing the surface temperature of the cooling segment (3).

Description

Tobacco cigarettes with zoned cooling and cooling method

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 8, 2023, with application number 202310995086.5 and invention name “A tobacco cigarette with zoned cooling and cooling method”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention belongs to the technical field of cigarettes, and more particularly relates to a novel tobacco cigarette with zoned cooling and a cooling method. Background Art

[0003] The aerosol usually produced in cigarette products will carry a certain amount of heat. During the smoking process, the aerosol with a higher temperature usually needs to pass through the cooling part in the filter to reduce the aerosol temperature to a temperature suitable for the inlet to meet the consumer's smoking needs.

[0004] However, this cooling process necessarily involves heat exchange between the aerosol and the cooling element. Because the aerosol itself is relatively hot, this heat exchange raises the temperature of the cooling element. This causes the surface temperature of the cooling element to approach that of the aerosol, reducing the cooling effect. Furthermore, during puffing, the consumer's labial mucosa comes into direct contact with the cooling element of the cigarette filter, causing a burning sensation in the mouth. This sensation is particularly noticeable during large puffs.

[0005] In the existing technology, air holes are opened on the surface of the filter tip, and room temperature air is introduced through the air holes. After mixing with the high-temperature aerosol, the inlet temperature can be effectively reduced. However, high temperature accumulation will still occur on the surface of the cooling section. Therefore, optimizing and improving the cooling section of the cigarette structure to reduce the surface temperature of the cooling section during the smoking process is a difficulty that urgently needs to be solved in this field.

[0006] Summary of the Invention

[0007] In existing technologies, during the puffing process, high-temperature aerosol in the cooling section of a cigarette mixes with ambient-temperature air, causing high-temperature accumulation in the cooling section. This results in a high surface temperature in the cooling section, causing discomfort to consumers during the puffing process and thus affecting the smoking experience. The present application provides a tobacco cigarette with zoned cooling, which, through the structural design of the cooling section, can effectively reduce and maintain the surface temperature of the cooling section during the puffing process.

[0008] The specific implementation scheme of the present invention is as follows:

[0009] A tobacco cigarette with zoned cooling, comprising: a tobacco section, a support section, a cooling section, and a filter section, which are connected and arranged on the surface by wrapping paper;

[0010] The tobacco segment is filled with a smoking substance and connected to the supporting segment;

[0011] The support section is a hollow structure distributed along the axial direction, and both ends of the support end are connected to the tobacco section and the cooling section;

[0012] The cooling section is a hollow structure and is provided with a partition wall along the axial direction. The partition wall divides the cooling section into a central area and a side area along the radial direction. The outer wall of the cooling section is also provided with air holes along the radial direction to connect the side areas with the outer surface of the packaging paper. The two ends of the cooling section are connected to the support section and the filtering section.

[0013] The filtering section is filled with filtering material and is connected to the cooling section.

[0014] Preferably, the connection area between the central area of ​​the cooling section and the hollow structure of the supporting section is larger than the connection area between the side areas of the cooling section and the hollow structure of the supporting section.

[0015] Preferably, the cooling section has a plurality of side areas distributed radially along the circumference.

[0016] Preferably, the side areas are evenly distributed along the circumference.

[0017] Preferably, the air hole is arranged at the center of the outer wall of each side area.

[0018] Preferably, the air hole is axially arranged on the side connected to the supporting section in the cooling section.

[0019] Preferably, the side areas are arranged in a spiral structure in the axial direction.

[0020] Preferably, the center line of the side area and the axial center line of the central area are parallel to each other.

[0021] Preferably, the outer wall is provided with an uneven surface structure.

[0022] A tobacco cigarette cooling method with zoned cooling comprises the following steps:

[0023] (1) heating the tobacco segment to generate an aerosol;

[0024] (2) the aerosol is concentrated in the hollow structure of the support section;

[0025] (3) The aerosol is divided after passing through the cooling section and enters the central area and the side area respectively. At the same time, the side area introduces normal temperature air through the air holes to mix with the aerosol;

[0026] (4) After the aerosol is divided into the central area and the side area and enters the filter section, the smoke temperature is balanced in the filter section.

[0027] Compared with the existing technology, the tobacco cigarette with zoned cooling provided by the present invention divides the cooling section into zones while setting air holes to introduce air at room temperature, thereby effectively reducing the surface temperature of the cooling section and keeping it at a low level to avoid causing discomfort to consumers. In addition, the smoke concentration in the central area is not affected, reducing the impact of cooling on the taste of the smoke and improving the consumer's smoking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a schematic diagram of the structure of a tobacco cigarette with zoned cooling provided by a specific embodiment;

[0030] FIG2 is a schematic diagram of airflow directions of the tobacco cigarette cooling method using zoned cooling as shown in FIG1 ;

[0031] FIG3 is a schematic diagram of the side area distribution in another specific embodiment;

[0032] FIG4 is a schematic diagram of the side area distribution in yet another specific embodiment. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0034] It should be noted that when a component is referred to as being “fixed on”, “mounted on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is “connected” to another component, or a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0035] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0036] The present invention targets existing cigarette structures, particularly heated cigarette structures, where the tobacco section is heated in a very short period of time. During the consumer's puffing process, high-temperature aerosol in the cooling section mixes with ambient-temperature air, causing high-temperature accumulation in the cooling section. This results in high surface temperatures in the cooling section, causing discomfort during the consumer's puffing experience, and thus affecting the puffing experience. The present application provides a zoned cooling tobacco cigarette that, through a structural design of the cooling section, can effectively reduce and maintain a low surface temperature in the cooling section during the puffing process.

[0037] The technical solution of the present invention is further specifically described below:

[0038] As shown in Figure 1, in a specific embodiment, a zoned cooling tobacco cigarette provided by the present application includes: a tobacco segment 1, a support segment 2, a cooling segment 3, and a filter segment 4, and the connection relationship is: the tobacco segment 1, the support segment 2, the cooling segment 3, and the filter segment 4 are arranged in sequence along the axial direction from left to right, and are connected by a wrapping paper 5 wrapped and sleeved on the surface.

[0039] The tobacco segment 1 is filled with a smoking substance for storing flavorings, which releases a fragrant aerosol after being heated by heat conduction for consumers to inhale.

[0040] The internal structure of the support section 2 is a hollow structure distributed along the axial direction, which is used to concentrate the aerosol;

[0041] The cooling section 3 is a hollow structure and is provided with a partition wall 3.3 in the axial direction. The partition wall 3.3 separates the hollow structure of the cooling section 3 from the outer wall 3.2, and radially divides the cooling section 3 into a central area and a side area from the inside to the outside. The outer wall 3.2 is also provided with air holes 3.1 in the radial direction. The air holes 3.1 penetrate the packaging paper 5, so that the side areas are connected to the outside environment, and are used to introduce ambient temperature air into the side areas for cooling.

[0042] The filtering section 4 is filled with filtering material and is used to filter the aerosol passing through the cooling section 3 and finally enter the consumer's mouth for inhalation.

[0043] Preferably, since the aerosol needs to be diverted when entering the cooling section 3 from the support section 2, in order to avoid the influence of the cooling means on the fragrance of the aerosol as much as possible, in this embodiment, as shown in Figure 1, the edge diameter of the central area of ​​the cooling section 3 isolated by the partition wall 3.3 is smaller than the inner diameter of the support section 2, and the connection area between the hollow structure of the support section 2 and the central area is larger, so that the volume of the aerosol entering the central area is greater than the volume entering the side area.

[0044] Furthermore, in the present application, the side areas separated and formed by the partition wall 3.3 have a variety of arrangements, including but not limited to the side areas in which the partition wall 3.3 is annular in structure, completely isolating the outer wall 3.2 from the central area, or the side areas in which the partition wall 3.3 surrounds the outer wall 3.2 to form multiple groove structures. As shown in FIG3 , the partition wall 3.3 divides the cooling section 3 into four side areas based on the outer wall and the other three sides are rectangular. At the same time, as shown in FIG4 , the partition wall 3.3 is distributed in an arc shape to divide the cooling section 3 into six side areas.

[0045] Furthermore, in order to better optimize the cooling effect of the side area, as shown in Figures 3 and 4, when there are multiple side areas, the side areas are evenly distributed along the circumference to avoid relative concentration of multiple side areas, causing high temperature accumulation on the outer wall 3.2.

[0046] Preferably, as shown in Figures 3 and 4, the air hole 3.1 serves as a channel connecting the side area with the outside world. In order to better introduce the outside normal temperature air, the air hole 3.1 is set at the center of the outer wall 3.2 area of ​​each side area, which facilitates the normal temperature air to enter each side area and better mix with the aerosol to cool it down.

[0047] Furthermore, in the present application, since the air hole 3.1 serves as a channel for introducing external air at normal temperature, in order to ensure the cooling effect of the air hole 3.1, as shown in Figure 1, the air hole 3.1 should be arranged in the cooling section 3 on the side close to the support section 2; at the same time, in order to further improve the cooling effect, a plurality of the air holes 3.1 can be arranged in each of the side areas, and each of the air holes 3.1 should fall in each of the corresponding side areas.

[0048] Preferably, in order to increase the axial cooling distance of the side area in the cooling section 3, in other embodiments, the side area can also be distributed in a spiral structure in the cooling section 3, and the center line of the spiral coincides with the axial center line of the central area. The spiral is arranged along the cooling section 3 from the support section 2 to the filter section 4, so that the length of the side area is greater than the length of the central area, which is convenient for heat dissipation.

[0049] In this embodiment, as shown in Figures 1 and 2, the center line of the side area is parallel to the axis of the central area, so that the side area is a straight-through structure arranged along the axis of the cooling section 3, and is mixed with the aerosol in the central area after cooling.

[0050] Preferably, in other embodiments, the surface of the outer wall 3.2 is provided with an uneven surface structure. By increasing the surface area of ​​the outer wall 3.2, it has a larger heat dissipation area, and can continuously maintain a low surface temperature during the puffing process, so that consumers can obtain a good puffing experience.

[0051] In the present application, a method for cooling tobacco cigarettes using the zoned cooling method is also provided, comprising the following steps:

[0052] (1) The consumer heats the tobacco segment 1 using a heating tool, which may be a burning or heating method. When heated to a certain temperature, the smoking substance filled in the tobacco segment 1 generates an aerosol with a smoke aroma;

[0053] (2) The aerosol is concentrated in the hollow structure of the support section 2, and the aerosol is also initially cooled;

[0054] (3) When the aerosol passes through the cooling section 3, it enters the central area and the side area respectively due to the isolation of the partition wall 3.3. At the same time, in the side area, the air holes 3.1 are provided on the outer wall 3.2 to introduce room temperature air to mix with the aerosol for cooling;

[0055] (4) After the aerosol passes through the diversion cooling section 3, it enters the filtering section 4, where it balances the smoke temperature and is finally used for inhalation by consumers.

[0056] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A tobacco cigarette with zoned cooling, characterized in that: include: The tobacco section, the supporting section, the cooling section and the filtering section are connected and arranged on the surface by wrapping with packaging paper; The tobacco segment is filled with a smoking substance and connected to the supporting segment; The support section is a hollow structure distributed along the axial direction, and both ends of the support end are connected to the tobacco section and the cooling section; The cooling section is a hollow structure, and is provided with a partition wall along the axial direction, the partition wall divides the cooling section into a central area and a side area along the radial direction, and the outer wall of the cooling section is also provided with air holes along the radial direction to connect the side area with the outer surface of the packaging paper, and the two ends of the cooling section are connected to the support section and the filtering section; The filtering section is filled with filtering material and is connected to the cooling section.

2. A tobacco cigarette with zoned cooling according to claim 1, characterized in that: The connection area between the central area of ​​the cooling section and the hollow structure of the supporting section is larger than the connection area between the side area of ​​the cooling section and the hollow structure of the supporting section.

3. The tobacco cigarette with zoned cooling according to claim 2, characterized in that: The temperature reduction section has a plurality of side areas distributed along the circumference in the radial direction.

4. The tobacco cigarette with zoned cooling according to claim 3, characterized in that: The side areas are evenly distributed along the circumference.

5. The tobacco cigarette with zoned cooling according to claim 4, characterized in that: The air hole is arranged at the center of the outer wall of each side area.

6. The tobacco cigarette with zoned cooling according to claim 5, characterized in that: The air hole is axially arranged at a side of the cooling section connected to the supporting section.

7. The tobacco cigarette with zoned cooling according to claim 1, characterized in that: The side area is arranged in a spiral structure in the axial direction.

8. The tobacco cigarette with zoned cooling according to claim 1, characterized in that: The center line of the side area and the axis line of the central area are parallel to each other.

9. The tobacco cigarette with zoned cooling according to claim 1, characterized in that: The outer wall is provided with an uneven surface structure.

10. A method for cooling tobacco cigarettes by cooling them in different zones, characterized in that: The steps include: (1) heating the tobacco segment to generate an aerosol; (2) the aerosol is concentrated in the hollow structure of the support section; (3) the aerosol is split after passing through the cooling section and enters the central area and the side area respectively, and at the same time, the side area introduces normal temperature air through the air holes to mix with the aerosol; (4) After the aerosol is divided into the central area and the side area and enters the filter section, the smoke temperature is balanced in the filter section.

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