Heating assembly and heating non-combustion smoking set

Abstract

The utility model discloses a heating assembly and a heating non-combustion smoking set, and relates to the technical field of heating non-combustion smoking sets, and the heating assembly comprises an inner pipe body, an outer pipe body, a heating element, a first insulating layer and a second insulating layer; the inner diameter of the outer pipe body is larger than the outer diameter of the inner pipe body, and the outer pipe body is arranged on the outer side of the inner pipe body in a sleeving mode. The heating element is arranged between the outer pipe body and the inner pipe body; the first insulating layer is arranged between the inner pipe body and the heating element, and the second insulating layer is arranged between the outer pipe body and the heating element; wherein the inner pipe body and the outer pipe body are made of metal or alloy materials; the first insulating layer and the second insulating layer are made of insulating materials. The heating element and the insulating layers are arranged in the inner pipe body and the outer pipe body, the first insulating layer and the second insulating layer which have the heat insulation effect are integrated with the heating element, the heat insulation element does not need to be additionally arranged outside when the heating assembly is installed on the smoking set, and assembling is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-not-burn smoking devices, and particularly relates to a heating component and a heat-not-burn smoking device. Background Art

[0002] In a heat-not-burn smoking device, a heating element is generally tubular. When the heating element heats an aerosol-forming matrix inside, heat is easily dissipated to the outside of the tube. Therefore, a heat-insulating element needs to be provided outside the heating element.

[0003] The assembly of an independent heating element and a heat-insulating element to a smoking device is not convenient enough. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is that the assembly of an independent heating element and a heat-insulating element to a smoking device is not convenient enough.

[0005] According to a first aspect, in one embodiment, a heating component is provided, including: an inner tube body, an outer tube body, a heating element, a first insulating layer and a second insulating layer;

[0006] The inner diameter of the outer tube body is larger than the outer diameter of the inner tube body, and the outer tube body is sleeved outside the inner tube body;

[0007] The heating element is arranged between the outer tube body and the inner tube body; the first insulating layer is arranged between the inner tube body and the heating element, and the second insulating layer is arranged between the outer tube body and the heating element;

[0008] Wherein, the inner tube body and the outer tube body are made of metal or alloy materials;

[0009] The first insulating layer and the second insulating layer are made of insulating materials.

[0010] In one embodiment, the thermal conductivity of the inner tube body is greater than that of the outer tube body.

[0011] In one embodiment, the material strength of the inner tube body is greater than that of the outer tube body.

[0012] In one embodiment, the material of the inner tube body is carbon steel, and the material of the outer tube body is stainless steel;

[0013] Or, the material of the inner tube body is aluminum alloy or lithium aluminum alloy, and the material of the outer tube body is aluminum alloy or lithium aluminum alloy;

[0014] Or, the material of the inner tube body is aluminum-titanium alloy, and the material of the outer tube body is stainless steel;

[0015] Or, the material of the inner tube body is titanium alloy, and the material of the outer tube body is stainless steel;

[0016] Or, the material of the inner tube body is a composite material of stainless steel and aluminum, and the material of the outer tube body is stainless steel;

[0017] Alternatively, the material of the inner tube body is a copper-containing alloy, and the material of the outer tube body is a stainless steel alloy.

[0018] In one embodiment, the thermal conductivity of the first insulating layer is greater than that of the second insulating layer.

[0019] In one embodiment, the material of the first insulating layer is ceramic fiber, and the material of the second insulating layer is glass fiber or aerogel.

[0020] In one embodiment, the materials of the first insulating layer and the second insulating layer are the same and are both fiber materials or porous materials, and the porosity of the first insulating layer is less than that of the second insulating layer.

[0021] In one embodiment, the pores of the first insulating layer are filled with insulating heat-conducting powder, and the thermal conductivity of the heat-conducting powder is greater than that of the second insulating layer.

[0022] In one embodiment, the heating element is a resistive heating element, and the heating element is a heating mesh, a heating tube or a heating sheet.

[0023] In one embodiment, the heating element is a thermistor heating element made of a metal or alloy material, and the change rate of the resistance temperature coefficient of the heating element within a preset temperature range is less than 1%.

[0024] In one embodiment, the material of the heating element is one of titanium, titanium alloy, nickel, nickel alloy, iron-nickel alloy and stainless steel.

[0025] In one embodiment, the heating assembly further includes a sealing structure for sealing both ends of the region between the inner tube body and the outer tube body. The sealing structure has a through hole, and the lead of the heating element is led out from the through hole.

[0026] In one embodiment, the sealing structure is a crimped portion formed by crimping the inner tube body and the outer tube body, or the sealing structure is a welded portion formed by using a welding material.

[0027] In one embodiment, the material of the lead includes kovar alloy or has a kovar alloy coating on the outside; the outer circumference of the lead is coated with a glass insulation coating and a kovar alloy coating, and the kovar alloy coating outside the glass insulation coating is hermetically connected to the through hole to seal between the through hole and the lead.

[0028] In one embodiment, the air pressure in the region between the inner tube body and the outer tube body is less than the air pressure outside the outer tube body.

[0029] According to the second aspect, in one embodiment, a heat-not-burn smoking device is provided, including the heating assembly described in the first aspect, and the heating assembly is configured to heat an aerosol-forming substrate to form an aerosol.

[0030] According to the heating component and the heat-not-burn smoking device of the above embodiments, by arranging a heating element and an insulating layer inside the inner tube body and the outer tube body, the first insulating layer and the second insulating layer that play a heat insulation effect form an integral body with the heating element. When the heating component is installed on the smoking device, there is no need to additionally add a heat insulation element outside the heating component, and the assembly is more convenient. Brief Description of the Drawings

[0031] Figure 1 FIG. 6 is a schematic structural view (1) of a heating component provided by an embodiment of the present application;

[0032] Figure 2 FIG. 10 is a schematic structural view (2) of a heating component provided by an embodiment of the present application;

[0033] Figure 3 FIG. 14 is a schematic structural view (3) of a heating component provided by an embodiment of the present application;

[0034] Figure 4 FIG. 18 is a schematic structural view of a heating element provided by an embodiment of the present application.

[0035] Reference Numerals: 10 - heating element; 11 - lead; 12 - glass insulation coating; 13 - kovar alloy coating; 21 - inner tube body; 22 - outer tube body; 31 - first insulation layer; 32 - second insulation layer; 40 - plugging structure; 41 - through hole. Detailed Embodiments

[0036] The present utility model will be further described in detail below in conjunction with the drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0037] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment and do not mean a necessary sequence, unless it is stated that a certain sequence must be followed.

[0038] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0039] As Figures 1 to 3 As shown, in an embodiment of this application, a heating assembly is provided. The heating assembly may include: an inner tube body 21, an outer tube body 22, a heating element 10, a first insulating layer 31, and a second insulating layer 32.

[0040] The inner diameter of the outer tube body 22 is greater than the outer diameter of the inner tube body 21, and the outer tube body 22 is sleeved outside the inner tube body 21.

[0041] The heating element 10 is disposed between the outer tube body 22 and the inner tube body 21; the first insulating layer 31 is disposed between the inner tube body 21 and the heating element 10, and the second insulating layer 32 is disposed between the outer tube body 22 and the heating element 10.

[0042] Wherein, the inner tube body 21 and the outer tube body 22 may be made of metal or alloy materials; the first insulating layer 31 and the second insulating layer 32 may be made of insulating materials.

[0043] The heating assembly provided by the embodiment of this application has a double-layer hollow metal tube formed by the inner tube body 21 and the outer tube body 22. The hollow area inside is provided with a heating element 10, a first insulating layer 31, and a second insulating layer 32. The insulating layer on the one hand plays a role in electrically insulating the metal tube body from the heating element 10, and on the other hand can also play a heat insulation effect, so that the heating assembly does not need to additionally add a heat insulation element outside.

[0044] The inner and outer tube bodies made of metal or alloy materials have rigidity and can support the entire heating assembly, so that the heating assembly can be conveniently assembled into a heated non-combustible smoking device.

[0045] In one embodiment, the thermal conductivity of the inner tube body 21 is greater than that of the outer tube body 22. The inner tube body 21 has a higher thermal conductivity, and the heat generated by the heating element 10 is preferentially conducted by the inner tube body 21 to the inner cavity of the inner tube body 21, that is, the heating cavity, so as to provide a better heating effect for the aerosol-forming matrix.

[0046] In one embodiment, the material strength of the inner tube body 21 is greater than that of the outer tube body 22. The inner and outer tube bodies 22 can be made of metals with lower density, so that the overall weight of the heating assembly is lower, avoiding excessive weight of the smoking device. In some embodiments, the inner tube body 21 has a greater thermal conductivity, and the heat insulation coefficient of the first insulating layer 31 is lower than that of the second insulating layer 32. The heat generated by the heating element 10 makes the temperature of the inner tube body 21 higher. At this time, the inner tube body 21 requires higher strength to maintain the overall strength of the heating assembly.

[0047] For example, the material of the inner tube body 21 can be carbon steel, and the material of the outer tube body 22 can be stainless steel; or, the material of the inner tube body 21 can be aluminum alloy or lithium aluminum alloy, and the material of the outer tube body 22 can be aluminum alloy or lithium aluminum alloy; or, the material of the inner tube body 21 can be aluminum-titanium alloy, and the material of the outer tube body 22 can be stainless steel; or, the material of the inner tube body 21 can be titanium alloy, and the material of the outer tube body 22 can be stainless steel; or, the material of the inner tube body 21 can be a composite material of stainless steel and aluminum, and the material of the outer tube body 22 can be stainless steel; or, the material of the inner tube body 21 can be a copper-containing alloy (such as copper alloy, aluminum bronze alloy, etc.), and the material of the outer tube body can be a stainless steel alloy. Among them, an anti-rust coating can also be considered on the surface of the copper-containing alloy.

[0048] The above material examples are only used to illustrate the settings of the thermal conductivity and material strength of the inner tube body 21 and the outer tube body 22, and do not exclude the availability of other materials. The materials listed above are common metal or alloy materials.

[0049] In one embodiment, the thermal conductivity of the first insulating layer 31 is greater than that of the second insulating layer 32. The first insulating layer 31 with a greater thermal conductivity (smaller thermal resistance coefficient) can make the heat generated by the heating element 10 preferentially conduct to the inner tube body 21 and reduce the conduction to the outer tube body 22.

[0050] In the above embodiment, the first insulating layer 31 and the second insulating layer 32 can be made of different materials to achieve different heat conduction effects. The material of the first insulating layer 31 can be ceramic fiber, and the material of the second insulating layer 32 can be glass fiber or aerogel. The ceramic fiber can be alumina or silicon nitride or beryllium oxide.

[0051] In the above embodiment, the first insulating layer 31 and the second insulating layer 32 can be made of the same material to achieve different heat conduction effects, such as porous materials or fibrous materials. The materials of the first insulating layer 31 and the second insulating layer 32 are both ceramic fiber or glass fiber, and the porosity of the first insulating layer 31 is smaller than that of the second insulating layer 32. For fibrous materials, fibrous materials with a large porosity usually have a lower thermal conductivity, while fibrous materials with a small porosity have a higher thermal conductivity. The first insulating layer 31 with a smaller porosity has a greater thermal conductivity.

[0052] In one embodiment, the pores of the first insulating layer 31 are filled with an insulating heat-conducting powder. The heat-conducting coefficient of the insulating heat-conducting powder is greater than that of the second insulating layer 32. It can be filled in the pores of the first insulating layer 31 to reduce the air in the first insulating layer 31, improve the heat-conducting ability of the first insulating layer 31, and enable faster heat conduction to the inner tube body 21. The insulating heat-conducting powder can be magnesium oxide powder or aluminum nitride powder.

[0053] The mass and thickness of the first insulating layer 31 and the second insulating layer 32 are as small as possible, so as to reduce the overall mass and size of the heating assembly.

[0054] In one embodiment, the heating element 10 can be a resistive heating element. The heating element 10 can be a heating mesh, a heating tube or a heating sheet, such as a perforated mesh sheet or a non-perforated foil sheet.

[0055] For example, the heating element 10 can be a thermistor heating element made of a metal or alloy material. The rate of change of the resistance temperature coefficient of the heating element 10 within a preset temperature range is less than 1%. The thermistor has a relatively stable temperature resistance coefficient, and the temperature can be controlled by monitoring the change in resistance value. The preset temperature range corresponds to the temperature setting of the application scenario of the heated non-combustible smoking device, for example, having a stable TCR value within 0°C - 400°C.

[0056] In one embodiment, the material of the heating element 10 can be one of titanium, titanium alloy, nickel, nickel alloy, iron-nickel alloy and stainless steel (such as SUS904, SUS316, SUS310s). The heating element 10 can include one or more, and can be made of one or more materials.

[0057] As Figure 4 shown, for example, the heating element 10 can be in the form of a heating mesh or a heating sheet, laid between the first insulating layer 31 and the second insulating layer 32, and the edges of the heating mesh or the heating sheet do not exceed the edges of the insulating layer. After being stacked and set, it is wound into a tubular shape and placed between the inner tube body 21 and the outer tube body 22.

[0058] As Figure 2 shown, in one embodiment, the heating assembly can further include a sealing structure 40. The sealing structure 40 is used to seal both ends of the hollow region between the inner tube body 21 and the outer tube body 22. The sealing structure 40 has a through hole 41, and the lead 11 of the heating element 10 is led out from the through hole 41.

[0059] In one embodiment, the sealing structure 40 is a crimping portion formed after the inner tube body 21 and the outer tube body 22 are crimped, or the sealing structure 40 is a welded portion formed by using a welding material.

[0060] For example, a heating element 10 is laid in the interlayer of an open double-layer hollow metal tube, and then semi-closed treatment is carried out. The inner tube body 21 and the outer tube body 22 are edge-sealed by processes such as high-temperature pressing, pulsed arc welding, or laser welding to form a plugging structure 40, and only 2 through-hole 41 spaces are reserved to lead out the lead 11 of the heating element 10.

[0061] Based on the above embodiment, the material of the lead 11 itself may include kovar alloy or have a kovar alloy coating on the outside; a glass insulation coating 12 and a kovar alloy coating 13 are coated on the outer periphery of the lead 11. The kovar alloy coating 13 outside the glass insulation coating 12 is hermetically connected to the through-hole 41 to seal between the through-hole 41 and the lead 11. The outermost kovar alloy coating 13 is used for seamless bonding with the metal near the lead outlet hole (through-hole 41).

[0062] In another embodiment, the plugging structure 40 can be formed by using a high-temperature resistant insulating glue, such as high-temperature resistant silica gel, etc.

[0063] This application can adopt processes such as metal-glass bonding to seal and insulate the through-hole 41. Before complete sealing, the gas in the interlayer of the double-layer metal tube is evacuated. So that the air pressure in the area between the inner tube body 21 and the outer tube body 22 is less than the air pressure outside the outer tube body 22. After the evacuation treatment, the heat transfer from the heating element 10 to the outer tube body 22 can be reduced, so that the heat is preferentially transferred to the inner tube body 21.

[0064] The embodiment of this application also provides a heat-not-burn smoking device, which may include the heating assembly described in the above embodiment. The heating assembly is configured to heat an aerosol-forming substrate to form an aerosol.

[0065] In summary, for the heating assembly and the heat-not-burn smoking device provided by the embodiment of this application, by arranging a heating element and an insulating layer inside the inner tube body and the outer tube body, a first insulating layer and a second insulating layer that play a heat insulation effect are integrated with the heating element. When the heating assembly is installed in the smoking device, there is no need to additionally add a heat insulation element outside the heating assembly, and the assembly is more convenient.

[0066] The heat-not-burn smoking device provided by this application has the technical effects of the above heating assembly, which will not be repeated here.

[0067] This article is described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications can be made to the exemplary embodiments without departing from the scope of this article. For example, various operating steps and the components used to perform the operating steps can be implemented in different ways according to a specific application or considering any number of cost functions associated with the operation of the system (for example, one or more steps can be deleted, modified, or combined into other steps).

[0068] While the principles herein have been shown in various embodiments, many modifications of structure, arrangement, proportions, elements, materials, and components, which are particularly adapted to specific environments and operational requirements, may be used without departing from the principles and scope of this disclosure. The above modifications and other changes or alterations will be included within the scope herein.

[0069] The foregoing detailed description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of this disclosure. Accordingly, the contemplation of this disclosure is meant in an illustrative rather than a limiting sense, and all such modifications will be included within its scope. Also, the advantages of the various embodiments, other advantages, and solutions to problems have been described above. However, benefits, advantages, solutions to problems, and any elements that produce these, or any elements that make them more explicit, should not be construed as critical, required, or essential. As used herein, the term "comprising" and any other variant thereof are intended to be non-exclusive inclusions, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but also other elements not expressly listed or inherent to such process, method, system, article, or apparatus. Further, as used herein, the term "coupled" and any other variant thereof refers to physical connection, electrical connection, magnetic connection, optical connection, communication connection, functional connection, and / or any other connection.

[0070] Those having skill in the art will recognize that many changes may be made in the details of the above-described embodiments without departing from the basic principles of the present utility model. Therefore, the scope of the present utility model should be determined solely by the claims.

Claims

1. A heating component, characterized in that, Comprising: an inner tube body (21), an outer tube body (22), a heating element (10), a first insulating layer (31) and a second insulating layer (32); the inner diameter of the outer tube body (22) is greater than the outer diameter of the inner tube body (21), and the outer tube body (22) is sleeved outside the inner tube body (21); the heating element (10) is arranged between the outer tube body (22) and the inner tube body (21); the first insulating layer (31) is arranged between the inner tube body (21) and the heating element (10), and the second insulating layer (32) is arranged between the outer tube body (22) and the heating element (10); wherein, the inner tube body (21) and the outer tube body (22) are made of metal or alloy materials; the first insulating layer (31) and the second insulating layer (32) are made of insulating materials.

2. The heating assembly according to claim 1, wherein The thermal conductivity of the inner tube body (21) is greater than that of the outer tube body (22).

3. The heating component according to claim 1 or 2, characterized in that, The material strength of the inner tube body (21) is greater than that of the outer tube body (22).

4. The heating assembly according to claim 3, wherein, The material of the inner tube body (21) is carbon steel, and the material of the outer tube body (22) is stainless steel; or, the material of the inner tube body (21) is aluminum alloy or lithium aluminum alloy, and the material of the outer tube body (22) is aluminum alloy or lithium aluminum alloy; or, the material of the inner tube body (21) is aluminum titanium alloy, and the material of the outer tube body (22) is stainless steel; or, the material of the inner tube body (21) is titanium alloy, and the material of the outer tube body (22) is stainless steel; or, the material of the inner tube body (21) is a composite material of stainless steel and aluminum, and the material of the outer tube body (22) is stainless steel; or, the material of the inner tube body (21) is a copper-containing alloy, and the material of the outer tube body (22) is a stainless steel alloy.

5. The heating assembly according to claim 1, wherein, The thermal conductivity of the first insulating layer (31) is greater than that of the second insulating layer (32).

6. The heating assembly according to claim 5, wherein, The material of the first insulating layer (31) is ceramic fiber, and the material of the second insulating layer (32) is glass fiber or aerogel.

7. The heating component according to claim 5, wherein The materials of the first insulating layer (31) and the second insulating layer (32) are the same and are both fiber materials or porous materials, and the porosity of the first insulating layer (31) is less than that of the second insulating layer (32).

8. The heating component according to claim 7, wherein The pores of the first insulating layer (31) are filled with insulating heat-conducting powder, and the thermal conductivity of the heat-conducting powder is greater than that of the second insulating layer (32).

9. The heating component according to claim 1, characterized in that, The heating element (10) is a resistive heating element, and the heating element (10) is a heating mesh, a heating tube or a heating sheet.

10. The heating component according to claim 1, characterized in that, The heating element (10) is a thermistor heating element made of metal or alloy materials, and the change rate of the resistance temperature coefficient of the heating element (10) within a preset temperature range is less than 1%.

11. The heating assembly according to claim 9 or 10, characterized in that, The material of the heating element (10) is one of titanium, titanium alloy, nickel, nickel alloy, iron-nickel alloy and stainless steel.

12. The heating assembly according to claim 1, characterized in that, The heating component further includes a sealing structure (40), the sealing structure (40) is used to seal both ends of the region between the inner tube body (21) and the outer tube body (22), the sealing structure (40) has a through hole (41), and the lead wire (11) of the heating element (10) is led out from the through hole (41).

13. The heating component according to claim 12, characterized in that, The sealing structure (40) is a crimping portion formed after the inner tube body (21) and the outer tube body (22) are crimped, or the sealing structure (40) is a welded portion formed by using a welding material.

14. The heating assembly according to claim 12, wherein The outer periphery of the lead wire (11) is coated with a glass insulation coating (12) and a kovar alloy coating (13), and the kovar alloy coating (13) outside the glass insulation coating (12) is hermetically connected to the through hole (41) to seal between the through hole (41) and the lead wire (11).

15. The heating component according to claim 1, characterized in that The air pressure in the region between the inner tube body (21) and the outer tube body (22) is less than the air pressure outside the outer tube body (22).

16. A heat-not-burn smoking device, characterized in that Comprising the heating component according to any one of claims 1-15, the heating component being configured to heat an aerosol-forming substrate to form an aerosol.

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