A flavoring device for heating cigarettes and its application

Abstract

The present invention relates to a flavoring device for heated cigarettes and its application. The flavoring device is placed in the filter of the heated cigarette and includes a first mesh box, a second mesh box, and a third mesh box. The first mesh box, the second mesh box, and the third mesh box are all cylindrical, with air-permeable mesh on the upper and lower surfaces and non-mesh closed panels on the side walls. The first mesh box, the second mesh box, and the third mesh box are stacked in sequence to form a stepped shape, and the upper and lower sides of the second mesh box are fixed to the first mesh box and the third mesh box, respectively. The flavoring device of the present invention avoids the problem of flavoring agents being easily decomposed at high temperatures after being mixed with tobacco. When used in heated cigarettes, it can better increase the aroma characteristics of the smoke without changing the original quality of the cigarette, thereby better improving the quality of the smoke, and improving the smoke inducibility and mouth aftertaste.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette processing and production, and particularly relates to a flavoring device for heating cigarettes and an application thereof. Background Art

[0002] The main aroma and flavor components of tobacco smoke are pyridines, alcohols, and cyclopentenones. These substances enhance the sensory quality of tobacco, and thus, adding flavor enhancers to tobacco cuts has become a common technique for improving the sensory quality of tobacco in recent years. However, when adding flavor to cut tobacco, the high temperature of the cigarette during smoking easily causes the volatilization of the aroma components. Furthermore, the high temperature also causes chemical reactions in the flavor enhancers, resulting in distorted or weakened aroma.

[0003] CN211241726U relates to a portable cigarette flavoring device, comprising a flavoring head, a flavoring bottle for holding flavorings, and a connector connecting the flavoring head and the flavoring bottle. The flavoring head is a hollow tube, into which a stainless steel capillary tube or a stainless steel side-hole needle tube is inserted, as well as a positioning seat for securing the stainless steel capillary tube or stainless steel side-hole needle tube. The flavoring bottle comprises a bottle body, a pipette inserted into the bottle body, and a flavoring pump mounted on the top of the pipette tube. The connector is a plunger, the upper and lower ends of which are inserted into the flavoring head and the mouth of the flavoring bottle, respectively. The flavoring pump is located in the center of the plunger, and the bottom end of the stainless steel capillary tube or stainless steel side-hole needle is connected to the flavoring pump. This utility model has a simple and lightweight structure, is easy to use, and is portable, allowing consumers to change the style and characteristics of their cigarettes according to their preferences, thereby increasing the enjoyment of smoking.

[0004] CN113679104A provides an external flavoring device for cigarettes, which relates to the field of cigarette production technology. The device comprises a flavoring body, a cigarette joint, and a mouthpiece. A first flue is provided in the flavoring body along its axial direction; the cigarette joint comprises a joint tube and a receiving cavity; a second flue connected to the first flue is provided in the mouthpiece along its axial direction; a first barrier membrane and a second barrier membrane are provided in the first flue. A feeding channel and a feeding cover for opening and closing the feeding channel are provided on the flavoring body. The connection between the feeding channel and the first flue is located between the first barrier membrane and the second barrier membrane. The invention has a simple structure and is easy to use. It can avoid the volatilization of flavors at high temperatures and the chemical reaction caused by high temperatures, which may cause the flavor to be distorted or weakened. Moreover, the added flavor can be freely replaced to change the taste of the cigarette. The flavoring body, cigarette joint, and mouthpiece are all detachable for easy cleaning, effectively avoiding the mixing of multiple flavors, and providing consumers with a good smoking experience.

[0005] However, the above-mentioned external fragrance enhancement device still has the following problems: the production cost is high, although it can be used multiple times, it is unhygienic, and it needs to be carried around in daily life, which makes it easy to lose or forget, and it cannot bring a convenient experience to consumers. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention aims to provide a flavoring device for heating cigarettes and its application.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a flavoring device for heated cigarettes, wherein the flavoring device is placed in a filter of the heated cigarette and comprises a first mesh box, a second mesh box, and a third mesh box;

[0009] The first, second and third net boxes are all cylindrical, with air-permeable mesh on the upper and lower surfaces and non-mesh closed panels on the side walls;

[0010] The first net box, the second net box and the third net box are stacked in sequence to form a ladder shape, and the upper and lower sides of the second net box are fixedly connected to the first net box and the third net box respectively.

[0011] In the present invention, the first mesh box, the second mesh box, and the third mesh box are arranged in a specific order. In this way, the flavoring agent can release fragrance in stages according to different physical properties such as the volatilization temperature of the flavoring agent, thereby regulating the volatilization of each flavoring component into the mainstream smoke to make the flavor characteristics of the heated cigarette more significant. It can also protect the effective ingredients in some traditional Chinese medicines from being destroyed and wasted due to overheating. The side walls of the flavoring device are all non-mesh closed plates, which can ensure that the smoke only travels along the extension direction of the cigarette and does not diffuse longitudinally.

[0012] Preferably, the outer diameter of the first cage is 3-5 mm and the height is 1-3 mm. For example, the outer diameter may be 3.2 mm, 3.5 mm, 3.8 mm, 4 mm, 4.2 mm, 4.5 mm or 4.8 mm, and the height may be 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm or 2.8 mm.

[0013] Preferably, the outer diameter of the second cage is 4-6 mm and the height is 1-3 mm. For example, the outer diameter may be 4.2 mm, 4.5 mm, 4.8 mm, 5 mm, 5.2 mm, 5.5 mm or 5.8 mm, and the height may be 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm or 2.8 mm.

[0014] Preferably, the outer diameter of the third cage is 5-7 mm and the height is 1-3 mm. For example, the outer diameter may be 5.2 mm, 5.5 mm, 5.8 mm, 6 mm, 6.2 mm, 6.5 mm or 6.8 mm, and the height may be 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm or 2.8 mm, etc.

[0015] Preferably, the outer diameter of the first cage is smaller than the outer diameter of the second cage and smaller than the outer diameter of the third cage.

[0016] Preferably, the diameter of the first central through hole is 1-3 mm, the diameter of the second central through hole is 2-4 mm, and the diameter of the third central through hole is 3-5 mm.

[0017] The diameter of the first central through hole may be 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm or 2.8 mm;

[0018] The diameter of the second central through hole may be 2.2 mm, 2.5 mm, 2.8 mm, 3 mm, 3.2 mm, 3.5 mm or 3.8 mm;

[0019] The diameter of the second central through hole may be 3.2 mm, 3.5 mm, 3.8 mm, 4 mm, 4.2 mm, 4.5 mm or 4.8 mm.

[0020] Preferably, the first net box is provided with a first central through hole; the second net box is provided with a second central through hole; and the third net box is provided with a third central through hole;

[0021] Preferably, the outer diameter of the first net cage is greater than the diameter of the second central through hole, and the outer diameter of the second net cage is greater than the diameter of the third central through hole.

[0022] Preferably, the fragrance enhancement device further comprises a central mesh box, which passes through the first central through hole, the second central through hole and the third central through hole in sequence and is fixedly connected to the first mesh box.

[0023] Preferably, the bottom surface of the end of the central net cage fixed to the first net cage is flush with the bottom surface of the first net cage on a side away from the second net cage.

[0024] Preferably, the central mesh box is cylindrical, with the upper and lower surfaces both being air-permeable meshes, and the side walls being non-mesh closed panels.

[0025] In the present invention, a central mesh box is provided in which adsorbent materials such as activated carbon can be placed, thereby reducing harmful components in the flue gas; and because it is provided at the central through hole, it will not adsorb aroma components in other mesh boxes.

[0026] Preferably, the height of the central cage is 3-9 mm, for example, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm or 9 mm.

[0027] Preferably, the diameter of the central mesh box is equal to the diameter of the first central through hole.

[0028] Preferably, the height of the central cage is equal to the sum of the heights of the first cage, the second cage and the third cage.

[0029] Preferably, the pore size of the air permeable mesh is 100-200 μm, and the pore density is 50-100 / cm 3 For example, the pore size can be 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm or 190 μm, etc.; the pore density can be 50 pores / cm 3 , 60 pieces / cm 3 , 70 pieces / cm 3 , 80 pieces / cm 3 , 90 pieces / cm 3 or 100 pieces / cm 3 wait.

[0030] In a second aspect, the present invention provides a use of the flavoring device as described in the first aspect in heating cigarettes.

[0031] In a third aspect, the present invention provides a heated cigarette, comprising a cigarette segment and a filter; the flavoring device as described in the first aspect is placed in the filter.

[0032] Preferably, the filter has a length of 32-34 mm and a diameter of 7.5-8.5 mm. For example, the length may be 32 mm, 32.5 mm, 33 mm, 33 mm or 34 mm, and the diameter may be 7.6 mm, 7.8 mm, 8 mm, 8.2 mm or 8.4 mm.

[0033] Preferably, the side of the first net box of the flavoring device away from the second net box is located in the filter close to the cigarette segment and abuts against the cigarette segment.

[0034] The heated cigarettes of the present invention are structurally capable of releasing the flavor of different types of cigarette additives in different temperature segments. The side walls of the first mesh box, the second mesh box, the third mesh box and the central mesh box are all non-mesh closed panels. The mainstream smoke will pass through the flavoring device, and the airflow quality of the smoke during the inhalation process is uniform.

[0035] In a fourth aspect, the present invention provides a method for using the flavoring device as described in the first aspect, wherein the method is as follows: a first flavoring agent is placed in the first net cage, a second flavoring agent is placed in the second net cage, and a third flavoring agent is placed in the third net cage, wherein the first flavoring agent, the second flavoring agent, and the third flavoring agent have different volatilization temperatures.

[0036] Preferably, an adsorbent material is placed in the central cage;

[0037] Preferably, the adsorptive material comprises activated carbon.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] In the present invention, the first mesh box, the second mesh box, and the third mesh box are arranged in a specific order. In this way, the flavoring agent can release fragrance in stages according to different physical properties such as the volatilization temperature of the flavoring agent, thereby regulating the volatilization of each flavoring component into the mainstream smoke to make the flavor characteristics of the heated cigarette more significant. It can also protect the effective ingredients in some traditional Chinese medicines from being destroyed and wasted due to overheating. The side walls of the flavoring device are all non-mesh closed plates, which can ensure that the smoke only travels along the extension direction of the cigarette and does not diffuse longitudinally. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A diagram showing the disassembled state of the aroma enhancement device provided in Example 1 of the present invention;

[0041] Figure 2 A diagram showing the use of the aroma enhancement device provided in Example 1 of the present invention;

[0042] Figure 3 This is a schematic structural diagram of a heated cigarette provided in Application Example 1 of the present invention;

[0043] Among them: cigarette segment 1, filter 2, flavoring device 3, first mesh box 31, first central through hole 311, second mesh box 32, first central through hole 321, third mesh box 33, second central through hole 331, central mesh box 34, closing plate 35, and breathable net 36. DETAILED DESCRIPTION

[0044] Example 1

[0045] This embodiment provides a flavoring device for heating cigarettes, comprising a first mesh box 31, a central mesh box 34 fixedly connected to the first mesh box 31, a second mesh box 32 fixedly connected to the first mesh box 31, and a third mesh box 33 fixedly connected to the second mesh box 32.

[0046] The first net box 31, the second net box 32, and the third net box 33 are stacked in a stepped shape. The first net box 31 has a first central through hole 311, the second net box 32 has a second central through hole 321, and the third net box 33 has a third central through hole 331.

[0047] The central net box 34 passes through the first central through hole 311, the second central through hole 321, and the third central through hole 331 in sequence from bottom to top;

[0048] The side walls of the first net box 31, the second net box 32, the third net box 33 and the central net box 34 are all airtight closed panels 35, and the upper and lower surfaces are all provided with air permeable nets 36.

[0049] The outer diameter of the first cage is 3 mm and the height is 2.5 mm;

[0050] The second cage has an outer diameter of 5 mm and a height of 2.5 mm;

[0051] The outer diameter of the second cage is 7 mm and the height is 2.5 mm;

[0052] The diameter of the first central through hole is 1.5 mm;

[0053] The diameter of the second central through hole is 2.5 mm;

[0054] The diameter of the third central through hole is 4.5 mm;

[0055] The diameter of the central cage is 1.5 mm and the height is 7.5 mm;

[0056] The pore size of the air permeable net is 150 μm, and the pore density is 70 / cm 3 .

[0057] Example 2

[0058] This embodiment provides a flavoring device for heating cigarettes. The pore size and pore density of the air permeable net in the flavoring device are different from those in Example 1. The pore size of the air permeable net is 180 μm and the pore density is 60 / cm 3 ;

[0059] The materials, sizes and connection relationships of the first net cage, the second net cage, the third net cage and the central net cage are consistent with those in Example 1.

[0060] Example 3

[0061] This embodiment provides a flavoring device for heating cigarettes. The pore size and pore density of the air permeable net in the flavoring device are different from those in Example 1. The pore size of the air permeable net is 120 μm and the pore density is 80 / cm 3;

[0062] The sizes and connection relationships of the first net cage, the second net cage, the third net cage and the central net cage are consistent with those in Example 1.

[0063] Example 4

[0064] This embodiment provides a flavoring device for heating cigarettes. The pore size and pore density of the air permeable net in the flavoring device are different from those in Example 1. The pore size of the air permeable net is 150 μm and the pore density is 40 / cm 3 ;

[0065] The sizes and connection relationships of the first net cage, the second net cage, the third net cage and the central net cage are consistent with those in Example 1.

[0066] Example 5

[0067] This embodiment provides a flavoring device for heating cigarettes. The pore size and pore density of the air permeable net in the flavoring device are different from those in Example 1. The pore size of the air permeable net is 150 μm and the pore density is 120 / cm 3 ;

[0068] The sizes and connection relationships of the first net cage, the second net cage, the third net cage and the central net cage are consistent with those in Example 1.

[0069] Example 6

[0070] This embodiment provides a flavoring device for heating cigarettes. The flavoring device differs from that of embodiment 1 in that it does not have a central mesh box. The sizes and connection relationships of the first, second and third mesh boxes are consistent with those of embodiment 1.

[0071] Example 7

[0072] This embodiment provides a flavoring device for heating cigarettes. The flavoring device differs from that of Example 1 in that it does not have a central mesh box. The sizes of the first, second, and third mesh boxes are all the same as those of the second mesh box, and the connection relationship is consistent with that of Example 1.

[0073] Example 8

[0074] This embodiment provides a flavoring device for heating cigarettes. The flavoring device differs from that of Example 1 in that it only has a central mesh box, which has a diameter of 5 mm and a height of 7.5 mm.

[0075] Comparative Example 1

[0076] This comparative example provides a flavoring device for heating cigarettes. The flavoring device differs from Example 1 in that the third mesh box is not included. The outer diameter of the first mesh box is 5 mm and the height is 2.5 mm.

[0077] The outer diameter of the second cage is 7 mm and the height is 2.5 mm;

[0078] The diameter of the first central through hole is 2.5 mm;

[0079] The diameter of the second central through hole is 4.5 mm;

[0080] The diameter of the central cage is 2.5 mm and the height is 7.5 mm;

[0081] The connection relationship between the first net cage, the second net cage and the central net cage is consistent with that in Example 1.

[0082] Comparative Example 2

[0083] This comparative example provides a flavoring device for heating cigarettes. The flavoring device differs from Example 1 in that the second and third net boxes are not included. The outer diameter of the first net box is 7 mm and the height is 2.5 mm.

[0084] The diameter of the first central through hole is 4.5 mm;

[0085] The diameter of the central cage is 4.5 mm and the height is 7.5 mm;

[0086] The connection relationship between the first cage and the central cage is consistent with that in Example 1.

[0087] Application Example 1

[0088] This application example provides a heated cigarette, which includes a cigarette segment 1 and a filter 2; the flavoring device 3 is placed in the filter 2, and the first mesh box 31 is located in the filter near the cigarette segment 1.

[0089] The side of the first net box of the flavoring device away from the second net box is located in the filter close to the cigarette segment and abuts against the cigarette segment.

[0090] The filter tip has a length of 33 mm and a diameter of 8 mm.

[0091] Jujube tincture (derived from MacLean's reagent) was placed in the first cage;

[0092] Coffee extract (derived from Macklin's reagent) is placed in the second cage;

[0093] Fenugreek tincture (derived from MacLean's reagent) is placed in the third net cage;

[0094] Activated carbon is placed in the central cage;

[0095] The added amounts of the jujube tincture, coffee extract, fenugreek tincture and activated carbon are the same.

[0096] Application Example 2-5

[0097] This application example provides four types of heated cigarettes. The difference between the heated cigarettes and application example 1 is that the flavoring device is replaced by the flavoring device of embodiments 2-5, and the placement position of the flavoring device remains unchanged.

[0098] Application Example 6

[0099] This application example provides a heated cigarette. The heated cigarette differs from Application Example 1 only in that the flavoring device is replaced by the flavoring device of Example 6, and the placement position of the flavoring device remains unchanged.

[0100] Application Example 7

[0101] This application example provides a heated cigarette. The heated cigarette differs from Application Example 1 only in that the flavoring device is replaced by the flavoring device of Example 7, and the placement position of the flavoring device remains unchanged.

[0102] Application Example 8

[0103] This application example provides a heated cigarette. The only difference between the heated cigarette and Application Example 1 is that the flavoring device is replaced with the flavoring device of Example 8, wherein the coffee extract, fenugreek tincture extract, osmanthus extract and activated carbon are mixed and placed in the flavoring device, and the placement position of the flavoring device remains unchanged.

[0104] Comparative Application Example 1

[0105] This comparative application example provides a heated cigarette, the only difference between the heated cigarette and application example 1 is that the flavoring device is replaced by the flavoring device of comparative example 1, wherein the osmanthus extract is divided into two parts and placed in the first mesh box and the second mesh box respectively, and the placement order and mass ratio of the flavoring devices remain unchanged.

[0106] Comparative Application Example 2

[0107] This comparative application example provides a heated cigarette. The only difference between the heated cigarette and Application Example 1 is that the flavoring device is replaced with the flavoring device of Comparative Example 2, wherein the fenugreek tincture extract and the osmanthus extract are placed in the first mesh box, and the placement order and mass ratio of the flavoring device remain unchanged.

[0108] Comparative Application Example 3

[0109] This comparative application example provides a heated cigarette. The difference between the heated cigarette and application example 1 is that the placement position of the flavoring device in the filter is different from that in application example 1, and the third mesh box is placed close to the cigarette section.

[0110] Comparative Application Example 4

[0111] This application example provides a heated cigarette, which differs from application example 1 only in that

[0112] Jujube tincture is placed in the first cage;

[0113] The coffee extract is placed in the second cage;

[0114] Activated carbon is placed in the third net box;

[0115] Fenugreek tincture is placed in the central cage;

[0116] The added amounts of the jujube tincture, coffee extract, fenugreek tincture and activated carbon are the same.

[0117] Test Example 1: Ammonia Reduction and Harm Reduction

[0118] Test objects: heated cigarettes provided in Application Examples 1, 6, 8, Comparative Application Example 4, and blank heated cigarettes.

[0119] Test Method: Ammonia content in cigarettes was determined in accordance with YC / T 377-2019, Determination of Ammonia in Cigarette Mainstream Smoke—Ion Chromatography Using Cambridge Impregnated Filters. The results are shown in Table 1.

[0120] Table 1

[0121]

[0122] According to the data in Table 1, compared with the blank heated cigarette of Comparative Application Example 5, the heated cigarette of Application Example 1 of the present invention is equipped with the flavoring device of the present invention, and activated carbon is placed in the flavoring device and the activated carbon is placed in a specific position, which can reduce the ammonia content in the flue gas, thereby achieving the effect of reducing ammonia and reducing harm. In Application Example 8, when the activated carbon is mixed with other flavoring agents, it also has a certain adsorption effect on fragrance, so under the condition of equal amounts, the adsorption effect on ammonia will be weakened; in Comparative Application Example 4, when the activated carbon is placed in a position different from the position specified by the present invention, its adsorption effect on ammonia is affected.

[0123] Test Example 2 Sensory Evaluation

[0124] Test objects: heated cigarettes provided in Application Examples 1-8 and Comparative Application Examples 1-4, as well as blank heated cigarettes.

[0125] Test method: Sampling was carried out in accordance with the sampling method in GB5606.4-2005 "Cigarettes Part 4: Sensory Technical Requirements", with sensory quality evaluation indicators and smoke stability indicators set separately. Seven special smoking testers were organized to evaluate and score the cigarettes based on the evaluation contents and criteria in Tables 2 and 3. The sensory quality indicators were scored on a 100-point scale.

[0126] The sensory quality evaluation indicators are: smoke volume, aroma and fragrance, strength, harmony, pungency and taste; the weights of each indicator are 10%, 30%, 10%, 10%, 15% and 25% respectively; the specific definitions of the six sensory quality evaluation indicators are shown in Table 2, the evaluation criteria of the six sensory quality evaluation indicators are shown in Table 3, and the specific results are shown in Table 4.

[0127] Table 2

[0128]

[0129] Table 3

[0130]

[0131]

[0132] Table 4

[0133] sample Smoke volume aroma Momentum Harmony Irritation Taste Total (100 points) Application Example 1 8.3 28.6 8.3 9.1 13.3 23.0 90.6 Application Example 2 9.1 27.7 8.9 8.7 13.4 23.6 91.4 Application Example 3 8.6 26.9 8.4 9.0 12.9 23.4 89.2 Application Example 4 7.3 24.0 7.6 7.4 11.4 21.7 79.4 Application Example 5 7.4 24.4 7.3 7.1 10.6 20.6 77.4 Application Example 6 8.2 28.3 8.6 8.7 8.7 20.1 82.6 Application Example 7 7.4 23.3 6.7 7.6 8.9 20.7 74.6 Application Example 8 7.1 19.7 7.4 7.0 11.7 21.6 74.7 Comparative Application Example 1 6.9 21.3 6.7 7.3 12.3 19.7 74.2 Comparative Application Example 2 6.4 23.6 7.6 7.9 12.7 20.3 72.1 Comparative Application Example 3 7.1 21.4 6.7 6.6 13.0 19.3 74.1 Comparative Application Example 4 7.9 23.7 7.9 8.0 10.4 23.1 81.0 Blank heated cigarette 5.3 12.1 5.6 6.3 7.4 15.4 52.1

[0134] As can be seen from the data in Table 4, compared with blank heated cigarettes, the flavoring devices provided by the present invention in Application Examples 1-3 can be placed separately according to the characteristics of different flavoring agents after being placed in the heated cigarettes, which not only improves the smoke concentration and smoke quality, but also improves the harmony and the lasting feeling, reduces throat irritation, improves the aftertaste in the mouth, and increases the sweetness in the mouth.

[0135] As can be seen from Application Examples 4-5, when the pore density of the breathable mesh is too large or too small, it will have a negative impact on the aroma and taste of the heated cigarette.

[0136] It can be seen from Application Example 8 that when the flavoring agent and activated carbon are mixed, it will have a certain negative impact on the taste of the heated cigarette.

[0137] It can be seen from Comparative Application Example 3 that when the placement position of the flavoring device is opposite to the position defined in the present invention, the taste of the cigarette will also be affected.

[0138] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0139] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A flavoring device for heating cigarettes, characterized in that: The flavoring device is placed in the filter of the heated cigarette, and includes a first mesh box, a second mesh box, a third mesh box, and a central mesh box; the first mesh box, the second mesh box, and the third mesh box are all cylindrical, with air-permeable mesh on the upper and lower surfaces and non-mesh closed panels on the side walls; The first net box, the second net box and the third net box are stacked in sequence in a stepped shape, and the upper and lower sides of the second net box are fixed to the first net box and the third net box respectively; The central net box passes through the first central through hole, the second central through hole and the third central through hole in sequence, and is fixedly connected to the first net box.

2. The flavoring device for heating cigarettes according to claim 1, characterized in that: The outer diameter of the first cage is 3-5 mm and the height is 1-3 mm.

3. The flavoring device for heating cigarettes according to claim 1, wherein: The outer diameter of the second cage is 4-6 mm and the height is 1-3 mm.

4. The flavoring device for heating cigarettes according to claim 1, wherein: The outer diameter of the third cage is 5-7 mm and the height is 1-3 mm.

5. The flavoring device for heating cigarettes according to any one of claims 2 to 4, characterized in that: The outer diameter of the first cage is smaller than the outer diameter of the second cage and smaller than the outer diameter of the third cage.

6. The flavoring device for heating cigarettes according to claim 1, characterized in that: The first net box is provided with a first central through hole, the second net box is provided with a second central through hole, and the third net box is provided with a third central through hole.

7. The flavoring device for heating cigarettes according to claim 6, characterized in that: The diameter of the first central through hole is 1-3 mm, the diameter of the second central through hole is 2-4 mm, and the diameter of the third central through hole is 3-5 mm.

8. The flavoring device for heating cigarettes according to claim 7, characterized in that: The outer diameter of the first net cage is greater than the diameter of the second central through hole, and the outer diameter of the second net cage is greater than the diameter of the third central through hole.

9. The flavoring device for heating cigarettes according to claim 1, characterized in that: The central net box is cylindrical, with air-permeable nets on the upper and lower surfaces and non-net closed panels on the side walls.

10. The flavoring device for heating cigarettes according to claim 1, wherein: The height of the central cage is 3-9 mm.

11. The flavoring device for heating cigarettes according to claim 1, characterized in that: The diameter of the central cage is equal to the diameter of the first central through hole.

12. The flavoring device for heating cigarettes according to claim 10, characterized in that: The height of the central cage is equal to the sum of the heights of the first cage, the second cage and the third cage.

13. The flavoring device for heating cigarettes according to claim 9, characterized in that: The pores in the breathable net have a diameter of 100-200 μm and a pore density of 50-100 pores / cm 3 .

14. Use of the flavoring device according to any one of claims 1 to 13 in heating cigarettes.

15. A heated cigarette, characterized in that: The heated cigarette includes a cigarette segment and a filter; the flavoring device according to any one of claims 1 to 13 is placed in the filter.

16. The heated cigarette according to claim 15, wherein: The filter has a length of 32-34 mm and a diameter of 7.5-8.5 mm.

17. The heated cigarette according to claim 15, wherein: The side of the first net box of the flavoring device away from the second net box is located in the filter close to the cigarette segment and abuts against the cigarette segment.

18. The method for using the aroma enhancement device according to any one of claims 1 to 13, wherein: The method of use is as follows: a first flavoring agent is placed in the first net box, a second flavoring agent is placed in the second net box, and a third flavoring agent is placed in the third net box; the first flavoring agent, the second flavoring agent, and the third flavoring agent have different volatilization temperatures.

19. The method for using the aroma enhancement device according to claim 18, wherein: Activated carbon is placed in the central net box.

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