A cooling device and a HNB cigarette

Abstract

This invention relates to the tobacco industry, specifically disclosing a cooling device and an HNB (Heated Tobacco Coin) cigarette. The cooling device is applied in an HNB cigarette and is positioned between the heated tobacco section and the filter rod. It comprises a cylindrical structure with one end connected to the heated tobacco section and the other end connected to the filter rod. Multiple flow-deflecting elements are arranged within the cylindrical structure, and each element has at least one curved surface convex in the direction of smoke flow on its surface facing the smoke flow direction, allowing the smoke to flow along the curved surface of the flow-deflecting element towards the filter rod. The cooling device of this application, by incorporating multiple flow-deflecting elements with curved surfaces within the cylindrical structure, allows the smoke to flow along the surfaces of each flow-deflecting element, extending the path length of the smoke flow, ensuring the cooling effect of the device, avoiding uneven smoke temperature, and improving the user experience of the HNB cigarette. Furthermore, its simple structure helps reduce the production cost of HNB cigarettes.

Description

Technical Field

[0001] This invention relates to the tobacco industry, and in particular to a cooling device and an HNB cigarette. Background Technology

[0002] Traditional tobacco products typically produce smoke by burning tobacco. HNB (Heated Tobacco Products) cigarettes, however, are a newer type of tobacco product. As the name suggests, HNB involves heating tobacco to produce smoke without actually burning it. In recent years, HNB cigarettes have become increasingly well-known among smokers, and their popularity is steadily growing.

[0003] Although HNB cigarettes do not require burning tobacco and the heating temperature is not high, the smoke itself has a high moisture content and the smoke passage is shortened. The sensory temperature of the mainstream smoke reaching the mouth is still higher than that of traditional cigarettes. Therefore, when consumers smoke HNB cigarettes, they will experience a certain burning sensation, which can cause some damage to the oral mucosa and tracheal mucosa, thus affecting the consumer's experience of using HNB cigarettes to some extent.

[0004] Current research on cooling methods for HNB cigarettes mainly focuses on two aspects: improving the cooling effect of the smoke through cooling materials and improving the cooling effect through cooling structures. However, there is still much room for improvement in how to enhance the cooling effect of HNB cigarettes. Summary of the Invention

[0005] The purpose of this invention is to provide a cooling device and an HNB cigarette stick, which can improve the cooling effect of smoke to a certain extent, thereby enhancing the user experience.

[0006] To solve the above-mentioned technical problems, the present invention provides a cooling device applied in HNB cigarettes, wherein the cooling device is disposed between the heated tobacco section and the filter rod of the HNB cigarette, comprising:

[0007] A cylindrical structure with one end connected to the heated tobacco section and the other end connected to the filter rod;

[0008] The cylindrical structure is provided with a plurality of flow-dispersing elements, and each of the flow-dispersing elements has at least one curved surface that protrudes in the direction of flue gas flow on the surface facing the flue gas flow direction, so that the flue gas flows along the curved surface of the flow-dispersing element toward the filter rod.

[0009] In one alternative embodiment of this application, the disturbance element includes one or more curved surface structures selected from teardrop-shaped structures, spherical structures, or ellipsoidal structures.

[0010] In one optional embodiment of this application, the baffle is a hollow cavity filled with liquid water.

[0011] In one optional embodiment of this application, the baffle is a hollow cavity, and ventilation holes are provided on the side wall of the cylindrical structure at the location where it connects to the baffle, so as to connect the internal cavity of the baffle with the external environment.

[0012] In one optional embodiment of this application, the disturbance element includes any one or more of the following surface structures: a partially teardrop-shaped curved surface structure, a partially spherical structure, or a partially ellipsoidal structure.

[0013] In one alternative embodiment of this application, a plurality of the aforementioned baffles are arranged in an alternating pattern within the cylindrical structure.

[0014] In one optional embodiment of this application, a baffle tube is further provided inside the cylindrical structure near one end of the heated tobacco section;

[0015] The spoiler is a cylindrical structure with a radius smaller than that of the cylindrical structure and a central axis parallel to that of the cylindrical structure.

[0016] The side wall of the turbulence cylinder is provided with multiple drainage holes;

[0017] The end of the turbulence tube facing away from the heated tobacco section and the inner wall of the cylindrical structure are connected by an annular baffle plate.

[0018] In one optional embodiment of this application, both the cylindrical structure and the baffle are metal structures.

[0019] An HNB cigarette includes: a heated tobacco section, a filter rod, and a cooling device disposed between the heated tobacco section and the filter rod, as described in any of the preceding claims.

[0020] In one optional embodiment of this application, the filter rod is provided with flavor-enhancing beads.

[0021] The present invention provides a cooling device and an HNB cigarette. The cooling device is applied in an HNB cigarette and is disposed between the heated tobacco section and the filter rod of the HNB cigarette. It includes: a cylindrical structure with one end connected to the heated tobacco section and the other end connected to the filter rod; the cylindrical structure is provided with a plurality of baffles, and each baffle has at least one curved surface convex in the direction of smoke flow on the surface facing the direction of smoke flow, so that the smoke flows along the curved surface of the baffle towards the filter rod.

[0022] The cooling device in this application incorporates multiple flow-dispersing elements with curved surfaces within a cylindrical structure. This allows the flue gas, flowing from the heated tobacco section through the cylindrical structure towards the filter rod, to follow the surface of each flow-dispersing element as it passes through them. The curved surface of each element resembles a Coanda profile, enabling the flue gas to flow along its path. This, to a certain extent, extends the path length of the flue gas flow. For the flue gas flowing within the cylindrical structure, a longer flow time results in a better cooling effect. The cooling device ensures effective cooling of the flue gas. Furthermore, the flow disruptor also disturbs the flow of flue gas within the cylindrical structure, effectively dispersing and mixing the mainstream flue gas near the central axis and the non-mainstream flue gas near the sidewalls. This avoids uneven flue gas temperature and excessively high mainstream flue gas temperature, further guaranteeing the cooling effect and improving the user experience of HNB cigarettes. Moreover, the cooling device in this application has a simple structure and low operating cost, which helps reduce the production cost of HNB cigarettes. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an HNB cigarette provided in an embodiment of this application;

[0025] Figure 2 A schematic diagram of the airflow through the baffle provided in the embodiments of this application;

[0026] Figure 3 This is a partial structural schematic diagram of the cooling device provided in the embodiments of this application;

[0027] Figure 4 This is a partial structural schematic diagram of another cooling device provided in an embodiment of this application. Detailed Implementation

[0028] Currently, the conventional cooling structures in HNB cigarettes are mostly designed by extending the smoke flow channel and setting up a relatively complex flow channel; or by setting cooling materials in the path of smoke flow. On the one hand, this cooling method does not take into account the problem of uneven temperature between mainstream and non-mainstream smoke, and on the other hand, setting up special cooling materials in the smoke flow path also increases the cost of HNB cigarettes to some extent.

[0029] Therefore, this application provides a technical solution that can both ensure the cooling effect of the smoke in HNB cigarettes and avoid excessively high cigarette costs.

[0030] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1 Figure 2 , Figure 3 as well as Figure 4 As shown, Figure 1 This is a schematic diagram of the structure of an HNB cigarette provided in an embodiment of this application; Figure 2 A schematic diagram of the airflow through the baffle provided in the embodiments of this application; Figure 3 This is a partial structural schematic diagram of the cooling device provided in the embodiments of this application; Figure 4 This is a partial structural schematic diagram of another cooling device provided in an embodiment of this application.

[0032] As mentioned above, the cooling device in this application is mainly used in HNB cigarettes and is placed between the heated tobacco section 10 and the filter rod 30 of the HNB cigarette. The heated tobacco section 10, as the name suggests, is the section filled with tobacco and heated to produce smoke. The filter rod 30 is the section where the user inhales the smoke. When the user inhales the smoke through the filter rod, the suction force will form a driving force between the heated tobacco section 10, the cooling device, and the filter rod 30 to drive the smoke flow. This causes the smoke to flow from the heated tobacco section through the cooling device to the filter rod, thereby creating a smoke airflow from the heated tobacco section 10 to the filter rod 30 inside the HNB cigarette.

[0033] It is understandable that, for HNB cigarettes, regardless of the structure of the cooling device, the general direction of the smoke flow is always from the heated tobacco section 10 to the filter rod 30; for ease of explanation, the smoke flow direction referred to in subsequent embodiments refers to the direction between the heated tobacco section 10 and the filter rod 30, as shown in the reference. Figure 1 , Figure 1 The direction indicated by the middle arrow is the direction of flue gas flow, which will not be repeated in this application.

[0034] Based on this, refer to Figure 1 In one specific embodiment of the HNB cigarette shown, the cooling device may include:

[0035] A cylindrical structure 20, one end of which is connected to the heated tobacco section 10 and the other end of which is connected to the filter rod 30;

[0036] The cylindrical structure 20 is provided with a plurality of baffles 21, and each baffle 21 has at least one curved surface that protrudes in the direction of flue gas flow on the surface facing the flue gas flow direction, so that the flue gas flows along the curved surface of the baffle 21 toward the filter rod 30.

[0037] In this embodiment, the interior of the cylindrical structure 20 serves as the flow channel for the flue gas to pass through the cooling device, and its outer diameter is approximately the same as the overall outer diameter of the HNB cigarette. When the flue gas flows through the cooling device, it flows from inside the cylindrical structure 20.

[0038] As mentioned earlier, extending the smoke flow path within an HNB cigarette can improve the cooling effect to some extent. However, due to the limitation of conventional HNB cigarette length, the overall length of the cooling device is limited and cannot be extended indefinitely. Therefore, it is necessary to design the smoke flow channel inside the cylindrical structure of the cooling device to be as tortuous as possible, thereby extending the length of the smoke flow path to a certain extent.

[0039] However, the conventional cooling structure for extending the flue gas flow path mainly involves designing serpentine or spiral flow channels. While this cooling structure can extend the flue gas flow path to some extent, all the flue gas flows along the same path, which means that the flue gas at different positions on the cross-section of the flue gas flow cannot be fully mixed. This results in the mainstream flue gas (i.e., the flue gas near the center of the cross-section of the flue gas flow) having a higher temperature and the non-mainstream flue gas having a lower temperature, leading to uneven flue gas temperature and even the problem that the mainstream flue gas is still too hot when it comes into contact with the consumer's mouth.

[0040] Therefore, in this embodiment, a baffle 21 with a curved surface is provided inside the cylindrical structure 20. Because the curved surface of the baffle is a convex surface facing the direction of flue gas flow, the curved surface is equivalent to forming a Coanda profile for the flowing flue gas. When the flue gas flows into contact with the curved surface of the baffle 21, it will flow along the curved surface, which is equivalent to forming a curved path extending along the curved surface of the baffle 21, thereby extending the path length of the flue gas flow in the cylindrical structure 20 to a certain extent.

[0041] Based on this, refer to Figure 2Because the baffle 21 has a curved surface, in addition to its own placement on the airflow channel, which has a certain baffle effect on the flue gas flow, when the flue gas flow reaches the curved surface of the baffle 21, the flue gas flow will inevitably radiate outward from various directions perpendicular to the flue gas flow direction. That is to say, the flue gas flow disperses and flows along the curved surface in different directions, which to a certain extent realizes the effect of airflow dispersion and baffle. After the flue gas flow passes around the baffle 21, it can be remixed. In this way, when the flue gas passes through each baffle 21 in sequence, the flue gas can be repeatedly dispersed and converged, which to a certain extent realizes the effect of fully and evenly mixing the different parts of the flue gas flow, thereby avoiding the problem of high mainstream flue gas flow temperature and uneven flue gas flow temperature distribution.

[0042] Understandably, in practical applications, any structure that creates a turbulence along the airflow path can achieve airflow mixing to a certain extent by obstructing the flow. However, this application uses a turbulence element 21 with a curved surface. On the one hand, this increases the path length of the smoke flow, and on the other hand, the curved surface is more in line with the fluid flow characteristics, so as not to cause excessive resistance to the smoke flow. This avoids the problem that consumers feel it is difficult to inhale the smoke due to the overly complex structure of the turbulence element 21, requiring a large suction force to promote the flow of the smoke, thereby ensuring the user experience of HNB cigarettes to a certain extent.

[0043] Optionally, the curved surfaces of each spoiler 21 can be further configured as centrally symmetrical surfaces, with the central axis of symmetry parallel to the central axis of the cylindrical structure 20. For example, the spoiler 21 can adopt a spherical structure, an ellipsoidal structure, etc.; for a spoiler 21 with a spherical structure, its central axis of symmetry is the straight line containing the diameter of the spherical surface; while the central axis of symmetry of a spoiler 21 with an ellipsoidal structure is the straight line containing the major axis or minor axis of the ellipsoidal surface.

[0044] Furthermore, the spoiler 21 can also adopt a teardrop-shaped structure. For example... Figure 1 As shown, the tip of the teardrop-shaped structure and the interior of the cylindrical structure 20 can be fixedly connected.

[0045] It should be noted that regardless of whether the baffle 21 is a spherical, ellipsoidal, or teardrop structure, it can be fixedly connected to the inner wall of the cylindrical structure 20. To further improve the cooling effect of the cooling device, the baffle 21 can be further configured as a cavity structure. Furthermore, this cavity structure can be interconnected with the ambient air through the side wall of the cylindrical structure 20. That is, multiple ventilation holes can be provided on the cylindrical structure 20. These ventilation holes should be located at the connection between the baffle 21 and the side wall of the cylindrical structure 20, allowing the interior of the cavity within the baffle 21 to communicate with the external environment. Thus, when the flue gas flows through the baffle and exchanges heat with it, the air inside the cavity of the baffle 21 can exchange heat with the external environment, thereby dissipating heat and achieving the purpose of heat dissipation.

[0046] Although the ventilation holes on the cylindrical structure 20 are not large, when users actually smoke HNB cigarettes, they do not continuously inhale the smoke. Instead, they pause for a period of time after each puff. This allows for heat exchange between the ventilation holes and the gas in the external environment, thereby cooling the air temperature inside the cavity of the baffle and maintaining it at a relatively low temperature. This further enables the baffle 21 to have the function of cooling through heat transfer, thus improving the cooling effect of the cooling device to a certain extent.

[0047] Optionally, in another optional embodiment of this application, it may further include: the turbulence member 21 is a hollow cavity, and the central control cavity of the turbulence member 21 is filled with liquid water.

[0048] Compared to other heat-conducting materials, liquid water has a relatively low cost and a relatively high specific heat, making it a better heat-conducting material that can quickly absorb heat from flue gas. Therefore, filling the inner cavity of the baffle 21 with liquid water can also enable the baffle 21 to absorb heat from the flue gas to a certain extent, thereby improving the cooling function of the entire cooling device.

[0049] The above embodiments are illustrated using complete curved surface structures such as teardrop, sphere, and ellipsoid structures as examples of the turbulence element 21. However, in practical applications, it is not limited to using curved surface structures.

[0050] In another optional embodiment of this application, the spoiler may include:

[0051] The spoiler 21 includes any one or more of the following surface structures: a partially teardrop-shaped curved surface structure, a partially spherical surface structure, or a partially ellipsoidal surface structure.

[0052] Reference Figure 2 and Figure 3 As shown, Figure 2and Figure 3 In the illustrated embodiment, the baffle is a hemispherical curved surface structure. Unlike a spherical structure, the hemispherical curved surface structure has a concave inner surface, and not all parts are convex. Therefore, when the flue gas flows along the convex surface of the hemispherical curved surface structure to its edge, a small amount of flue gas will flow into the concave inner surface of the hemispherical curved surface structure and remain there. When new flue gas subsequently flows into the concave inner surface of the hemispherical curved surface structure, the mixing of the successively flowing flue gas can also cool the subsequently flowing flue gas. Furthermore, when the flue gas in the concave inner surface reaches a certain amount, it will flow back towards the filter rod 30. Obviously, the temperature of the flue gas flowing out from the concave inner surface is relatively low. Thus, it can be seen that using the concave inner surface of the hemispherical curved surface structure can also improve the cooling effect of the baffle 21 to a certain extent.

[0053] Of course, in practical applications, a three-quarter spherical surface structure or a spherical surface structure of other sizes can also be used; this application does not impose specific restrictions on this. Furthermore, similar to the hemispherical surface structure mentioned above, the flow-dissipating components of some teardrop-shaped surface structures, some ellipsoidal surface structures, etc., obviously also have similar cooling effects; these will not be described in detail in this application.

[0054] Furthermore, it is understood that regardless of whether the spoiler 21 is a curved body structure or a curved surface structure, the various spoilers 21 should be arranged in a staggered manner within the cylindrical structure, referring to... Figure 1 , Figure 3 as well as Figure 4 The illustrated embodiment, in Figure 1 In the embodiment shown, the deflector 21 is a teardrop-shaped structure, and its tip and the connection position inside the cylindrical structure 20 are alternately distributed on opposite sides of the inner wall of the cylindrical structure 20, thereby realizing the staggered arrangement of the teardrop-shaped deflectors 21. In practical applications, the connection points of each teardrop-shaped deflector 21 can also be arranged in a spiral shape on the inner wall of the cylindrical structure 20, or there can be other arrangement methods, which are not listed one by one in this embodiment.

[0055] And for Figure 3 and Figure 4 In the embodiments shown, the spoilers 21 are all axisymmetric structures, but the axes of symmetry of each spoiler 21 are not completely on the same straight line, but are offset from the central axis of symmetry of the cylindrical structure 20.

[0056] Therefore, referring to Figure 1 , Figure 3 and Figure 4The arrangement of the baffles shown, with each baffle 21 arranged in a cross pattern, helps to avoid the problem that each baffle 21 is concentrated on the central axis of symmetry of the cylindrical structure, or located on a straight line parallel to the central axis of symmetry of the cylindrical structure 20, thereby forming a straight flue gas flow channel within the cylindrical structure 20 and reducing the flue gas cooling effect.

[0057] However, it is understandable that in practical applications, in order to ensure the turbulence-disrupting effect of each turbulence-disrupting component 21, the arrangement of each turbulence-disrupting component 21 is not limited to... Figure 3 and Figure 4 In the embodiment shown, different turbulence-disrupting components 21 of different shapes and structures can also be set inside the same cylindrical structure 20, as long as the effect of turbulence-disrupting and cooling of flue gas is ultimately achieved.

[0058] Based on the above embodiments, in order to further improve the overall cooling effect of the cooling structure, in another optional embodiment of this application, a baffle tube 22 is also provided at one end of the cylindrical structure 20 near the heated tobacco section 10.

[0059] Among them, the spoiler 22 is a cylindrical structure with a radius smaller than that of the cylindrical structure 20 and whose central axis is parallel to that of the cylindrical structure 20;

[0060] Multiple drainage holes 221 are provided on the side wall of the turbulence cylinder 22;

[0061] The end of the turbulence tube 22 that is away from the heated tobacco section 10 is connected to the inner wall of the cylindrical structure 20 through an annular baffle plate 23.

[0062] This application further includes a baffle 22 on the HNB cigarette structure, which is arranged along a common central axis with the cylindrical structure 20. Because the inner diameter of the cylindrical structure 20 is smaller than the outer diameter of the baffle 22, a certain gap exists between the outer wall of the baffle 22 and the inner wall of the cylindrical structure 20. Furthermore, an annular baffle 23 is provided between the end of the baffle 22 away from the heated tobacco section 10 and the inner wall of the cylindrical structure 20. Therefore, when the smoke flows through the baffle 22 into the cylindrical structure 20, a portion of the smoke will directly pass through the interior of the baffle 22 into the area where the baffle 21 is located, while another portion of the smoke will flow... The flue gas enters the space between the outer wall of the baffle 22 and the inner wall of the cylindrical structure 20. However, due to the obstruction of the annular baffle 23, this part of the flue gas cannot directly flow into the area where the baffle 21 is located inside the cylindrical structure 20. On this basis, multiple drainage holes 221 are provided on the side wall of the baffle 22, so that the flue gas flowing into the space between the outer wall of the baffle 22 and the inner wall of the cylindrical structure 20 can flow back into the baffle 22 through the drainage holes 221 and then re-enter the area where the baffle 21 is located. However, it is obvious that the flue gas flowing directly through the baffle 22 has a longer flow path and a lower temperature than the flue gas that flows through the outer wall of the baffle 22 before entering the baffle 22. After entering the baffle 22 through the drainage holes 221, it can mix with the airflow that directly enters the baffle 22, which can also cool the flue gas that directly enters the baffle 22 to a certain extent.

[0063] In addition, to improve the overall cooling effect of the cooling device, the baffle, baffle cylinder 22 and cylindrical structure 20 in this application can all be metal compression molded to form metal structure components, so that the entire cooling device has good thermal conductivity with the external environment.

[0064] In summary, the cooling device in this application incorporates multiple flow-dispersing elements with curved surfaces within a cylindrical structure. This allows the flue gas, flowing from the heated tobacco section through the cylindrical structure towards the filter rod, to follow the surface of each flow-dispersing element as it passes through them. The curved surface of each flow-dispersing element resembles a Coanda profile, enabling the flue gas to flow along this surface. This, to a certain extent, extends the path length of the flue gas flow. For the flue gas flowing within the cylindrical structure, a longer flow time results in a better cooling effect. This ensures the cooling effect of the cooling device on the flue gas. Furthermore, the baffle also disturbs the flow of flue gas within the cylindrical structure, effectively dispersing and mixing the mainstream flue gas near the central axis and the non-mainstream flue gas near the sidewalls. This avoids uneven flue gas temperature and excessively high mainstream flue gas temperature, further guaranteeing the cooling effect and improving the user experience of HNB cigarettes. Moreover, the cooling device in this application has a simple structure and low operating cost, which helps reduce the production cost of HNB cigarettes.

[0065] This application also provides an embodiment of an HNB cigarette, which may include a heated tobacco section 10, a filter rod 30, and a cooling device disposed between the heated tobacco section 10 and the filter rod 30, as described in any of the preceding claims.

[0066] The HNB cigarette in this application is equipped with a cooling device, which includes a baffle with a curved surface. This baffle extends the path of the smoke flow through the cooling device to a certain extent, and achieves repeated dispersion and mixing of the smoke. This ensures that the smoke at different temperatures is fully mixed, and further improves the cooling effect while maintaining the uniformity of the smoke temperature. This avoids the problem of the HNB cigarette damaging the consumer's mouth during inhalation, and helps to improve the user experience of the HNB cigarette.

[0067] Optionally, the filter rod 30 of the HNB cigarette in this embodiment is further provided with a flavoring capsule 31. It should be noted that the filter rod 30 of the HNB cigarette in this embodiment is similar to the filter rod of a traditional cigarette. It is a cylindrical section of flexible material with a certain filtering function. In this embodiment, the flavoring capsule 31 is provided inside the filter rod 30. When the user wants to enhance the aroma of the smoke, he / she directly squeezes the filter rod 30, causing the flavoring capsule 31 to burst and release a liquid with an aromatic scent. The smoke, after passing through the liquid, carries the aromatic scent, thereby improving the smoking experience of the HNB cigarette to a certain extent.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that the elements inherent in a process, method, article, or apparatus that includes a list of elements are included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Additionally, portions of the technical solutions provided in the embodiments of this application that are consistent with the implementation principles of corresponding technical solutions in the prior art have not been described in detail to avoid excessive elaboration.

[0069] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A cooling device, characterized by, The device, used in HNB cigarettes and positioned between the heated tobacco section and the filter rod, comprises: A cylindrical structure with one end connected to the heated tobacco section and the other end connected to the filter rod; The cylindrical structure is provided with a plurality of baffles, and each baffle has at least one curved surface that protrudes in the direction of flue gas flow on the surface facing the flue gas flow direction, so that the flue gas flows along the curved surface of the baffle towards the filter rod. The disturbance component includes one or more curved surface structures selected from teardrop-shaped structures, spherical structures, or ellipsoidal structures. The baffle is a hollow cavity filled with liquid water.

2. The cooling device of claim 1, wherein, The baffle is a hollow cavity, and ventilation holes are provided on the side wall of the cylindrical structure at the location where it connects to the baffle, so as to connect the internal cavity of the baffle with the external environment.

3. The cooling device of claim 1, wherein, The disturbance component includes any one or more of the following surface structures: a partially teardrop-shaped curved surface structure, a partially spherical surface structure, or a partially ellipsoidal surface structure.

4. The cooling device of claim 1, wherein, Multiple of the aforementioned baffles are arranged in an alternating pattern within the cylindrical structure.

5. The cooling device of claim 1, wherein, A baffle tube is also provided inside the cylindrical structure near the end of the heated tobacco section. The spoiler is a cylindrical structure with a radius smaller than that of the cylindrical structure and a central axis parallel to that of the cylindrical structure. The side wall of the turbulence cylinder is provided with multiple drainage holes; The end of the turbulence tube facing away from the heated tobacco section and the inner wall of the cylindrical structure are connected by an annular baffle plate.

6. The cooling device of claim 1, wherein, Both the cylindrical structure and the baffle are metal structures.

7. A HNB cigarette, characterized in that, include: A heating tobacco section, a filter rod, and a cooling device disposed between the heating tobacco section and the filter rod, as described in any one of claims 1 to 6.

8. The HNB cigarette according to claim 7, wherein the tobacco filler is a mixture of the tobacco filler of claim 1 and a tobacco filler other than the tobacco filler of claim 1. The filter rod contains flavor-enhancing beads.

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