A cooling assembly
By designing multiple bent channels and spaced cavities within the cylindrical structure of the HNB cigarette as a cooling component, the problem of poor cooling performance in HNB cigarettes has been solved, achieving more efficient smoke heat dissipation and cooling, improving user experience and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JILIN TOBACCO IND CO LTD
- Filing Date
- 2022-11-04
- Publication Date
- 2026-06-19
AI Technical Summary
There is room for improvement in the cooling effect of existing HNB cigarettes, especially in terms of ensuring user experience. Traditional methods increase production costs and ignore the issue of smoke heat dissipation.
Design a cooling component including a cylindrical structure and multiple first and second cooling cavities inside to form a flue gas bending channel, and leave gap cavities between the cavities to promote heat dissipation, and use liquid water to fill the gap cavities to improve heat dissipation efficiency.
Extending the flue gas flow path improves heat dissipation efficiency, reduces flue gas temperature, enhances user experience, and lowers production costs.
Smart Images
Figure CN115486560B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tobacco products, and in particular to a cooling component. Background Technology
[0002] Heated tobacco products, also known as low-temperature tobacco, are a new type of tobacco product that combines a heating device and a tobacco cartridge. They use a special heating device (smoking device) to heat processed tobacco (special tobacco cartridge) to a level sufficient to emit smoke for people to inhale. They are characterized by "heating tobacco or tobacco extracts instead of burning tobacco".
[0003] Traditional cigarette smoke, after being filtered by the tobacco stick and filter before being inhaled into the consumer's mouth, experiences a temperature reduction. However, the mainstream smoke temperature reaching the mouth still reaches 35℃ to 90℃. During the last 2-3 puffs of a traditional cigarette, the smoke temperature at the filter tip can reach as high as 70℃ to 80℃. In deep-puff mode, the smoke temperature at the filter tip can reach approximately 100℃. The mainstream smoke temperature of filterless cigarettes is about 28% higher. Consumers don't feel a burning sensation because the smoke is relatively dry. While HNB (High-End Bicycle) cigarettes produce a lower-temperature aerosol, the higher moisture content and shorter smoke passage result in a higher perceived temperature of the mainstream smoke reaching the mouth compared to traditional cigarettes. Therefore, cooling the smoke is essential to prevent excessively high smoke temperatures that could cause a burning sensation or even burns to the mouth.
[0004] Currently, the cooling measures for HNB products mainly focus on adding heat-absorbing cooling materials and designing cooling structures. However, both have many shortcomings, and there is still room for improvement in the cooling effect. Therefore, how to further improve the cooling range and efficiency of HNB products for cooling flue gas is one of the key research directions in the industry. Summary of the Invention
[0005] The purpose of this invention is to provide a cooling component that improves the cooling effect of smoke in HNB cigarettes to a certain extent, thereby enhancing the user experience.
[0006] To solve the above-mentioned technical problems, the present invention provides a cooling component, which is applied to an HNB cigarette and is disposed between the tobacco heating section and the smoke guiding section of the HNB cigarette; it includes a cylindrical structure and a plurality of first cooling chambers and a plurality of second cooling chambers disposed inside the cylindrical structure;
[0007] Each of the first cooling chambers is sequentially attached to and interconnected along the flue gas flow direction to form a flue gas bend channel;
[0008] Each of the second cooling chambers is disposed between the first cooling chamber and the flue gas guide section, and each of the second cooling chambers is sequentially attached to and interconnected with each other along the flue gas flow direction to form another flue gas bending channel;
[0009] The two cooling chambers, the first cooling chamber and the second cooling chamber, which are closest to each other, form an intervening cavity between their opposite sides and the cylindrical structure, and the two cooling chambers are interconnected.
[0010] In one optional embodiment of this application, each of the first cooling cavities and each of the second cooling cavities are symmetrical cavities symmetrical about the central axis of the cylindrical structure;
[0011] The first cooling chambers are connected by vent holes, and the vent hole between one adjacent first cooling chamber is located in the edge region, while the vent hole between another adjacent first cooling chamber is located in the central region near the central axis.
[0012] Each of the second cooling chambers is connected by a vent hole, and the vent hole between one adjacent second cooling chamber is located in the edge region, while the vent hole between another adjacent second cooling chamber is located in the central region near the central axis.
[0013] In one optional embodiment of this application, each of the first cooling cavities and each of the second cooling cavities are curved cavities;
[0014] The first cooling cavity is convex and curved along the flue gas flow direction, and the second cooling cavity is convex and curved in the opposite direction of the flue gas flow direction.
[0015] The central regions of the outwardly convex curved surfaces of the two cooling cavities, the first cooling cavity and the second cooling cavity, which are closest to each other, are in contact and connected.
[0016] In one optional embodiment of this application, both the first cooling cavity and the second cooling cavity are hemispherical cavities or semi-elliptical cavities.
[0017] In one optional embodiment of this application, a flue gas inlet is provided in the curved cavity wall of the first cooling cavity closest to the tobacco heating section on the side near the tobacco heating section at a position on the central axis of the cylindrical structure.
[0018] In one optional embodiment of this application, the second cooling chamber closest to the flue gas guide section has multiple uniformly distributed flue gas outlets on the side of the chamber wall near the flue gas guide section.
[0019] In one optional embodiment of this application, the first cooling cavity, the second cooling cavity, and the cylindrical structure are all metal parts.
[0020] In one optional embodiment of this application, a through hole is provided on the cylindrical wall in which the spacer cavity is formed on the cylindrical structure so that the spacer cavity is connected to the external environment.
[0021] In one alternative embodiment of this application, the spacer cavity is filled with liquid water.
[0022] In one optional embodiment of this application, a first fiber bundle segment is provided at the end of the cylindrical structure connected to the tobacco heating section; and a second fiber bundle segment is provided at the end of the cylindrical structure connected to the flue gas guiding section.
[0023] The present invention provides a cooling component applied to an HNB cigarette and disposed between the tobacco heating section and the smoke guiding section of the HNB cigarette; it includes a cylindrical structure and multiple first cooling cavities and multiple second cooling cavities disposed inside the cylindrical structure; wherein, each of the first cooling cavities is sequentially attached to and interconnected along the smoke flow direction to form a smoke bending channel; each of the second cooling cavities is disposed between the first cooling cavities and the smoke guiding section, and each of the second cooling cavities is sequentially attached to and interconnected along the smoke flow direction to form another smoke bending channel; the two cooling cavities, one of the closest first cooling cavities and one of the closest second cooling cavities, form a spacer cavity between their opposite sides and the cylindrical structure, and the two cooling cavities are interconnected.
[0024] The cooling component in this application has a cooling cavity inside the cylindrical structure that forms a bend in the flue gas flow path, thereby extending the flow path of the flue gas within the cooling component and ensuring a cooling effect. Furthermore, considering that a large portion of the heat loss during flue gas cooling comes from heat exchange with the cooling structure, ensuring the heat dissipation of the cooling structure is also crucial for flue gas cooling. Therefore, this application divides the cooling cavity into two groups: multiple first cooling cavities and multiple second cooling cavities, each forming one group. An intervening cavity is left between the two groups, allowing each group to dissipate heat from both ends, thus ensuring the heat dissipation effect of the cooling cavity to a certain extent and indirectly improving the cooling effect on the flue gas. Attached Figure Description
[0025] 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.
[0026] Figure 1 This is a schematic diagram of the cooling component provided in an embodiment of this application;
[0027] Figure 2 This is a schematic diagram of the structure of a single cooling cavity provided in an embodiment of this application;
[0028] Figure 3 This is a schematic diagram of the cooling cavity provided in an embodiment of this application. Detailed Implementation
[0029] In current HNB (Heated Tobacco Products) systems, to cool the flue gas, various bend structures such as serpentine and spiral shapes, or other more complex structures, are used to extend the flue gas flow path, thereby achieving cooling. While this method does cool the flue gas, its complexity increases the production cost of the cooling structure.
[0030] Furthermore, current cooling structures in HNB (Heated Tobacco Unit) smoke systems primarily focus on designing various complex smoke flow channels to enhance the cooling effect, while neglecting the fact that the cooling process largely depends on the smoke dissipating heat through the cooling structure itself.
[0031] Therefore, this application provides a cooling structure for HNB smoke, which improves the heat dissipation efficiency of the cooling structure itself to a certain extent, thereby improving the cooling effect on the smoke.
[0032] 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.
[0033] like Figure 1 , Figure 2 as well as Figure 3 As shown, Figure 1 This is a schematic diagram of the cooling component provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a single cooling cavity provided in an embodiment of this application; Figure 3 This is a schematic diagram of the cooling cavity provided in an embodiment of this application.
[0034] As mentioned above, the cooling component in this application is used in an HNB cigarette and is disposed between the tobacco heating section and the smoke guiding section of the HNB cigarette. In one specific embodiment of this application, the cooling component may include:
[0035] The cylindrical structure 10 and a plurality of first cooling chambers 21 and a plurality of second cooling chambers 22 disposed inside the cylindrical structure 10;
[0036] Each of the first cooling chambers 21 is sequentially attached to and interconnected along the flue gas flow direction to form a flue gas bend channel;
[0037] Each second cooling chamber 22 is disposed between the first cooling chamber 21 and the flue gas guide section, and each second cooling chamber 22 is sequentially attached to and interconnected along the flue gas flow direction to form another flue gas bending channel.
[0038] The two cooling chambers, namely the first cooling chamber 21 and the second cooling chamber 21, are located close to each other. The opposite sides of the two cooling chambers and the cylindrical structure 10 form an inter-cavity, and the two cooling chambers are interconnected.
[0039] In this embodiment, the cylindrical structure 10 can be regarded as a component forming the outer peripheral structure of the cooling component. When the flue gas flows through the cooling component, it flows from the inside of the cylindrical structure 10.
[0040] It is understandable that in HNB cigarettes, the smoke is generated from the tobacco heating section and flows through the cooling assembly to the smoke guiding section, which is the section containing the filter rod. Therefore, the general direction of the smoke in the cooling assembly should be from the tobacco heating section to the smoke guiding section, referring to... Figure 1 That is Figure 1 The direction shown in the figure; furthermore, for ease of explanation, the flue gas flow direction referred to thereafter is... Figure 1 The directions shown will not be elaborated upon further.
[0041] To cool the flue gas, two sets of cooling chambers are further provided inside the cylindrical structure 10. One set includes multiple first cooling chambers 21, and the other set includes multiple second cooling chambers 22. The first cooling chambers 21 are sequentially connected to form a flue gas bend channel, and the multiple second cooling chambers 22 are also sequentially connected to form a second flue gas bend channel. Compared to a straight channel, within the same length of the cylindrical structure 10, the bend channel obviously increases the length of the flue gas flow channel to a significant extent.
[0042] Based on this, in this embodiment, a gap space is reserved between the first cooling cavity 21 and the second cooling cavity 22, and together with the side wall of the cylindrical structure 10, a gap cavity 11 is formed. That is to say, in this embodiment, each cooling cavity is arranged in a spaced section within the cylindrical structure 10, thereby avoiding the problem of the cooling cavity located in the middle being too concentrated in the cylindrical structure 10, which would affect the heat dissipation of the cooling cavity. In other words, the heat dissipation of the cooling cavity itself is improved to a certain extent. The heat dissipation of flue gas in the cooling cavity largely depends on the heat transfer between the cooling cavity and the cooling cavity. Therefore, the heat dissipation effect of the cooling cavity is improved, which indirectly improves the heat dissipation effect of the flue gas.
[0043] Of course, in practical applications, the cooling chamber can be divided into three or more groups. However, considering the limitation of the length of HNB cigarettes, if the cooling chamber is too dispersed, a longer cooling component is required. Therefore, the number of groups of the cooling chamber can be set based on the actual situation. This application does not impose any specific restrictions on this.
[0044] Based on the above discussion, this application fully considers that the essence of flue gas heat dissipation depends on the heat transfer generated by the cooling structure itself, and sets the cooling cavity into spaced sections, thereby improving the cooling effect on the flue gas by enhancing the heat dissipation of the cooling cavity.
[0045] Furthermore, as mentioned earlier, the gap cavity 11 between the two sets of cooling chambers is formed together with the cylindrical structure 10, such as... Figure 1 As shown, the two sets of cooling chambers are tightly fitted to the inner wall of the cylindrical structure 10, thereby forming a closed space that is isolated from the flue gas space between the cavity wall of the closest first cooling chamber 21 and the inner wall of the cylindrical structure 10.
[0046] This allows for the provision of through holes 12 on the side wall of the gap cavity 11 formed on the cylindrical structure 10, thereby enabling the air inside the gap cavity 11 to communicate with the external environment. This, in turn, improves the heat dissipation effect of the air inside the gap cavity 11 to a certain extent, which in turn promotes the heat dissipation of the cooling chamber and enhances the cooling effect on the flue gas.
[0047] Of course, it is also possible to fill the gap cavity 11 with cooling material, such as liquid water. On the one hand, liquid water has a relatively high specific heat capacity and is a good heat absorption material. On the other hand, the cost of liquid water is lower than that of other cooling materials, which can reduce the cost of using the cooling component to a certain extent.
[0048] In addition, to improve the cooling effect of flue gas flowing within each cooling chamber, in another optional embodiment of this application, it may further include:
[0049] Each of the first cooling chambers 21 and each of the second cooling chambers 22 are symmetrical cavities symmetrical about the central axis of the cylindrical structure 10;
[0050] Each of the first cooling chambers 21 is connected by a vent 23, and the vent 23 between one adjacent first cooling chamber 21 is located in the edge region, while the vent 23 between another adjacent first cooling chamber 21 is located in the central region near the central axis.
[0051] Each of the second cooling chambers 22 is connected by a vent 23, and the vent 23 between one adjacent second cooling chamber 22 is located in the edge region, while the vent 23 between another adjacent second cooling chamber 22 is located in the central region near the central axis.
[0052] When the flue gas passes through the cooling assembly, it first flows into each of the first cooling chambers 21. Each first cooling chamber 21 is an axisymmetric cavity structure symmetrical about the central axis of a cylindrical structure. Ventilation holes 23 are provided between each first cooling chamber 21 and any two adjacent first cooling chambers 21, allowing the flue gas to flow sequentially within each first cooling chamber 21. In other words, when the flue gas passes through each of the first cooling chambers 21, it flows from one first cooling chamber 21 into another second cooling chamber 22, and then sequentially through each of the first cooling chambers 21.
[0053] Based on this, refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 In the embodiments shown, each first cooling cavity 21 is a cavity with a hemispherical curved surface structure; for ease of understanding, in Figure 1 and Figure 2 In the illustrated embodiment, the direction of flue gas flow is indicated by dashed lines with arrows, and Figure 2 In the illustrated embodiment, the single first cooling chamber 21 has four vents 23 located at the edge of its concave spherical surface, serving as flue gas inlets. Two vents 23 are located near the center of the convex spherical surface of the first cooling chamber 21, serving as flue gas outlets. It is understood that... Figure 2 The edge region of the outer convex spherical surface of the first cooling cavity 21, which is in contact with the concave spherical surface of the first cooling cavity 21 shown, should be provided with a vent 23, which is the same as the flue gas inlet mentioned above. Figure 2 The concave spherical surface of the first cooling cavity 21 shown is the convex spherical surface of the first cooling cavity 21 adjacent to its concave side; therefore, when Figure 2After the flue gas flows into the first cooling chamber 21 from the flue gas inlet, the flue gas can then converge and flow radially from the edge regions in all directions towards the central region of the first cooling chamber 21, and flow out from the flue gas outlet into the next adjacent first cooling chamber 21 on the convex spherical side of the first cooling chamber 21. Obviously, Figure 2 The flue gas outlet of the first cooling chamber 21 shown is the flue gas inlet of the next first cooling chamber 21, located in the central region of the concave spherical surface of the next first cooling chamber 21, while the flue gas outlet of the next first cooling chamber 21 is located in the edge region of the convex spherical surface. Thus, the flue gas flow diverges outward from the central region to the edge region within the first cooling chamber 21. Therefore, this application employs a centrally symmetrical first cooling chamber 21, and alternately positions the flue gas inlet and outlet of adjacent first cooling chambers 21 in the central and edge regions of the first cooling chamber 21. This results in a tortuous flow of airflow in opposite directions within two adjacent first cooling chambers 21, and the flue gas flow in each first cooling chamber 21 converges or diverges radially. This achieves repeated mixing and dispersion of the flue gas flow, thereby extending the flue gas flow path and ensuring thorough mixing of different parts of the flue gas, thus guaranteeing the uniformity of the flue gas temperature. Furthermore, the flue gas flow in each first cooling chamber 21 is dispersed around the central axis of the cylindrical structure 10, preventing the flue gas flow from becoming too concentrated and significantly improving the cooling effect on the flue gas.
[0054] Similar to the flow of flue gas in the first cooling chamber 21, the structure and connection of each second cooling chamber 22 are similar to those of the first cooling chamber 21. Thus, for each second cooling chamber 22, the flue gas flow can also converge or diverge in a radial manner, thereby extending the flue gas flow path, ensuring the uniformity of flue gas temperature, and preventing the flue gas flow from becoming too concentrated. This also greatly improves the cooling effect on the flue gas. This will not be repeated in this embodiment.
[0055] In addition, Figure 1 and Figure 2 In the actual embodiment shown, each of the first cooling cavity 21 and the second cooling cavity 22 is a hemispherical cavity structure, with the first cooling cavity 21 protruding outward in the direction of flue gas flow and the second cooling cavity 22 protruding outward in the opposite direction of flue gas flow. Furthermore, the central regions of the outward convex curved surfaces of the two cooling cavities, namely the first cooling cavity 21 furthest from the tobacco heating section and the second cooling cavity 22 closest to the tobacco heating section, are interconnected, thereby achieving mutual communication between the first cooling cavity 21 and the second cooling cavity 22.
[0056] Furthermore, the radius of each first cooling cavity 21 increases progressively along the flue gas flow direction, while the radius of each second cooling cavity 22 decreases progressively along the flue gas flow direction, as illustrated in the example. In practical applications, both the first cooling cavity 21 and the second cooling cavity 22 can be considered as semi-ellipsoidal cavities, or partially spherical cavities smaller than a hemisphere, etc. However, in principle, the central regions of each first cooling cavity 21 and each second cooling cavity 22 should be close to the central axis of the cylindrical structure 10, while the edge regions should be far from the central axis. When the flue gas flows in each first cooling cavity 21 and each second cooling cavity 22, it repeatedly flows back and forth between the central axis of the cylindrical structure 10 and the sidewall of the cylindrical structure 10, making full use of the better heat dissipation effect of the sidewall of the cylindrical structure 10, and avoiding the problem of poor heat dissipation caused by the flue gas being too concentrated in the central axis region of the cylindrical structure 10.
[0057] Based on the above embodiments, it is not necessary to use a spherical or ellipsoidal cavity structure. Other smoothly transitioned curved surface structures can also be used. In short, each of the first cooling cavities 21 and each of the second cooling cavities 22 can be a hemispherical cavity, a semi-ellipsoidal cavity, or other curved surface cavities with varying curvature. This application does not impose specific restrictions on this.
[0058] Optionally, when the first cooling cavity 21 is a curved cavity, the first cooling cavity 21 closest to the tobacco heating section has a flue gas inlet located on the curved cavity wall of the side closest to the tobacco heating section at the position on the central axis of the cylindrical structure.
[0059] Because the surface of the first cooling chamber 21 closest to the tobacco heating section is a concave surface facing the direction of flue gas flow, it has a certain converging effect on the flue gas. Therefore, the vent 23, which serves as the flue gas inlet, can be set in the central area of the first cooling chamber 21, so that the flue gas can converge and flow into the first cooling chamber 21 along the concave cavity wall of the first cooling chamber 21.
[0060] Furthermore, the first cooling cavity 21 is not necessarily a curved surface structure. (Refer to...) Figure 3 , Figure 3 In the embodiments shown, each of the first cooling chambers 21 and each of the second cooling chambers 22 is a disc structure. Figure 3 Only cross-sectional views of each of the first cooling chambers 21 and each of the second cooling chambers 22 are shown in the figure. Figure 3 The first cooling chambers 21 and the second cooling chambers 22 shown are arranged sequentially along the flue gas flow direction. Figure 1 as well as Figure 2Similar to the illustrated embodiment, the vent 23 between each first cooling chamber 21 and an adjacent first cooling chamber 21 on one side is located in the central region, while the vent 23 between adjacent first cooling chambers 21 on the other side is located in the edge region. This allows the flue gas flow in each adjacent first cooling chamber 21 to flow in opposite directions in a dispersed manner, which will not be repeated in this embodiment. Similarly, the second cooling chambers 22 are connected sequentially in the same direction.
[0061] In addition, a transitional connecting pipe can be provided between the first cooling chamber 21 and the second cooling chamber 22, which are closest to each other, to achieve communication between the first cooling chamber 21 and the second cooling chamber 22.
[0062] Furthermore, to further enhance the turbulence effect on the flue gas flow within each of the first cooling chambers 21 and the second cooling chambers 22, it is also possible to further consider providing multiple turbulence holes 24 on both sides of the cavity walls of each of the first cooling chambers 21 and the second cooling chambers 22. Of course, to avoid the turbulence holes severely affecting the overall flow direction of the flue gas within the first cooling chambers 21 and the second cooling chambers 22, the diameter of each turbulence hole 24 can be smaller than that of the vent holes 23 that serve as flue gas inlets and outlets, and they can be scattered on the cavity walls of the first cooling chambers 21 and the second cooling chambers 22.
[0063] Optionally, for the first cooling cavity 21 and the second cooling cavity 22 to be curved cavities, on the one hand, it is conducive to the smooth flow of flue gas into the flue gas flow, and on the other hand, it conforms to the flue gas flow characteristics, making the flue gas flow resistance smaller.
[0064] Furthermore, the second cooling chamber 22 closest to the flue gas guide section has multiple evenly distributed vent holes 23 on the side wall near the flue gas guide section as flue gas outlets, so that the flue gas can be dispersed and output after passing through the second cooling chamber 22, avoiding the concentrated heat of the flue gas from increasing.
[0065] Furthermore, for the first cooling cavity 22 and the second cooling cavity 23, regardless of the cavity structure, they can be made of metal or ceramic materials to ensure that the cavity wall of the first cooling cavity 21 has good thermal conductivity to a certain extent.
[0066] In another optional embodiment of this application, a first fiber bundle segment is provided at the end of the cylindrical structure 10 connected to the tobacco heating section; and a second fiber bundle segment is provided at the end of the cylindrical structure 10 connected to the flue gas guiding section.
[0067] It should be noted that the first fiber bundle segment and the second fiber bundle segment referred to in this embodiment can be structural segments made of the same material as the filter rod. The fiber bundle segments at both ends can achieve double-layer filtration of the smoke, which can improve the smoking taste to a certain extent.
[0068] In summary, the cooling component in this application has a cooling cavity inside the cylindrical structure that forms a bend in the flue gas flow path, thereby extending the flow path of the flue gas within the cooling component and ensuring a cooling effect. Furthermore, considering that a large portion of the heat loss during flue gas cooling originates from heat exchange with the cooling structure, ensuring the heat dissipation of the cooling structure is crucial for flue gas cooling. Therefore, this application divides the cooling cavity into two groups: multiple first cooling cavities and multiple second cooling cavities, each forming one group. A gap cavity is also left between the two groups, allowing each group to dissipate heat from both ends, thus ensuring the heat dissipation effect of the cooling cavity to a certain extent and indirectly improving the cooling effect on the flue gas.
[0069] 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.
[0070] 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 assembly, characterized by, It is applied to HNB cigarettes and is disposed between the tobacco heating section and the smoke guiding section of the HNB cigarette; it includes a cylindrical structure and multiple first cooling chambers and multiple second cooling chambers disposed inside the cylindrical structure; Each of the first cooling chambers is sequentially attached to and interconnected along the flue gas flow direction to form a flue gas bend channel; Each of the second cooling chambers is disposed between the first cooling chamber and the flue gas guide section, and each of the second cooling chambers is sequentially attached to and interconnected with each other along the flue gas flow direction to form another flue gas bending channel; A spacer cavity is formed between the opposite sides of the two cooling cavities, namely the first cooling cavity and the second cooling cavity, and the two cooling cavities are interconnected. Each of the first cooling cavities and each of the second cooling cavities are curved cavities; The first cooling cavity is convex and curved along the flue gas flow direction, and the second cooling cavity is convex and curved in the opposite direction of the flue gas flow direction. The central regions of the outwardly convex curved surfaces of the two cooling cavities, the first cooling cavity and the second cooling cavity, which are closest to each other, are in contact and connected.
2. The cooling assembly of claim 1, wherein, Each of the first cooling cavities and each of the second cooling cavities are symmetrical cavities symmetrical about the central axis of the cylindrical structure; The first cooling chambers are connected by vent holes, and the vent hole between one adjacent first cooling chamber is located in the edge region, while the vent hole between another adjacent first cooling chamber is located in the central region near the central axis. Each of the second cooling chambers is connected by a vent hole, and the vent hole between one adjacent second cooling chamber is located in the edge region, while the vent hole between another adjacent second cooling chamber is located in the central region near the central axis.
3. The heat sink assembly of claim 1, wherein, Both the first cooling cavity and the second cooling cavity are hemispherical cavities or semi-elliptical cavities.
4. The heat sink assembly of claim 1, wherein, The first cooling chamber, which is closest to the tobacco heating section, has a flue gas inlet located on the curved cavity wall of the side closest to the tobacco heating section at a position on the central axis of the cylindrical structure.
5. The heat sink assembly of claim 1, wherein, The second cooling chamber closest to the flue gas guide section has multiple evenly distributed flue gas outlets on the side wall of the chamber closest to the flue gas guide section.
6. The heat sink assembly of claim 1, wherein, The first cooling cavity, the second cooling cavity, and the cylindrical structure are all metal parts.
7. The cooling assembly of any one of claims 1 to 6, wherein, A through hole is provided on the cylindrical wall of the cylindrical structure that forms the spacer cavity, so that the spacer cavity can be connected to the external environment.
8. The cooling assembly of any one of claims 1 to 6, wherein, The spacer cavity is filled with liquid water.
9. The heat sink assembly of claim 1, wherein, A first fiber bundle segment is provided at one end of the cylindrical structure connected to the tobacco heating section; a second fiber bundle segment is provided at one end of the cylindrical structure connected to the flue gas guiding section.