Heating structure and heating non-combustion device

Abstract

The utility model discloses a heating structure and a heating non-combustion device. Belongs to the technical field of aerosol generation. According to the heating structure, the first shell and the second shell are connected to form the containing space for containing the heating body so as to achieve containing and protection of the heating body, and the heat conductivity of the first shell is configured to be larger than that of the second shell, so that the heat conductivity of the heating body is improved. When the heating body is in a power-on state for heating, the first shell inserted into the aerosol generating substrate can more efficiently conduct heat emitted by the heating body to the aerosol generating substrate, so that the utilization rate of the heat emitted by the heating body is increased; and the heating efficiency of the aerosol generation substrate is improved, so that the response efficiency of aerosol generation is improved.

Description

Technical Field

[0001] The present application relates to the field of aerosol generation technology, and in particular to a heating structure and a heating without combustion device. Background Art

[0002] A heat-not-burn device is an apparatus that heats and bakes an aerosol-generating substrate to produce aerosol. The heating structure, which inserts into the substrate to heat the substrate, currently consists of two types: metal-shell heaters and ceramic-shell heaters. Metal-shell heaters typically utilize a resistor wire wound within a metal shell, while ceramic-shell heaters are manufactured using a more complex thick-film process.

[0003] Whether using a metal or ceramic shell heating element, the heating structure fails to effectively conduct heat to the portion of the aerosol-generating substrate inserted therein when heating the aerosol-generating substrate. This results in low heating efficiency and low heat utilization. Therefore, existing heating structures need improvement. Utility Model Content

[0004] The main purpose of the present application is to provide a heating structure and a heating-without-combustion device to solve the problem of low heating efficiency of the heating structure on the aerosol generating substrate in the prior art.

[0005] According to one aspect of the present application, a heating structure is provided for heating an aerosol-generating substrate, the heating structure comprising:

[0006] a first shell and a second shell, wherein the first shell and the second shell are connected to form a receiving space, wherein the first shell is used to insert the aerosol generating substrate, and the thermal conductivity of the first shell is greater than the thermal conductivity of the second shell; and

[0007] The heating element is provided in the accommodation space and is configured to generate heat when powered.

[0008] Furthermore, the heating body includes a heating element, a first electrode and a second electrode respectively arranged in the receiving space, the first electrode is held between the heating element and the first shell and is electrically connected to the heating element, the second electrode is electrically connected to the heating element and is separated from the first electrode, and the second electrode is suspended in the receiving space.

[0009] Furthermore, the first shell has a first receiving bin, the second shell has a second receiving bin, and the first shell is connected to the second shell so that the first receiving bin is connected to the second receiving bin and defines the receiving space, wherein the first electrode is located in the first receiving bin, and the second electrode is located in the second receiving bin.

[0010] Furthermore, the area covered by the first electrode on the heating element is larger than the area covered by the second electrode on the heating element.

[0011] Furthermore, the heating element includes a substrate and a resistive heating layer, the resistive heating layer covers the surface of the substrate, the first electrode and the second electrode respectively cover the resistive heating layer, and the first electrode and the second electrode are respectively electrically connected to the resistive heating layer.

[0012] Furthermore, the first shell includes an insertion portion and a first connecting portion, the insertion portion having an insertion end, and the first connecting portion is connected to an end of the insertion portion away from the insertion end along the direction in which the first shell is inserted into the aerosol generating substrate;

[0013] The second housing includes a second connection portion connected to the first connection portion and covering a circumference of the first connection portion.

[0014] Furthermore, the inserting portion and the first connecting portion are jointly constructed to form the first receiving compartment, and the heating element passes through the first connecting portion and at least partially extends into the inserting portion.

[0015] Furthermore, the second connection portion is riveted to a peripheral side of the first connection portion.

[0016] Furthermore, the first electrode is electrically connected between the first shell and the heating element, and a first electrode lead of the first electrode is electrically connected to the first shell and passes through the second receiving compartment to extend out of the second shell;

[0017] The second electrode lead wire led out from the second electrode passes through the second receiving compartment to extend out of the second shell.

[0018] Furthermore, the first shell is provided with a vent hole, and the vent hole communicates with the first receiving compartment and the outside of the first shell.

[0019] Furthermore, the second receiving compartment communicates with the first receiving compartment and the outside of the second shell;

[0020] An air flow channel is provided between the heating element and / or the first electrode and the first receiving compartment, and the air flow channel is connected to the second receiving compartment and the vent hole.

[0021] On the other hand, the present application further provides a heat-without-combustion device, comprising any one of the above-mentioned heating structures; and

[0022] The outer shell is structured to form an installation space and a receiving cavity, the receiving cavity is used to receive the aerosol generating matrix, the heating structure is arranged in the installation space, and the first shell extends into the receiving cavity.

[0023] In the present application, the first shell and the second shell are connected to form a receiving space for receiving the heating element, so as to achieve the accommodation and protection of the heating element, and the thermal conductivity of the first shell is configured to be greater than the thermal conductivity of the second shell, so that when the heating element is in an energized state and generates heat, the first shell inserted into the aerosol generating matrix can more efficiently conduct the heat emitted by the heating element to the aerosol generating matrix, thereby improving the utilization rate of the heat emitted by the heating element and the heating efficiency of the aerosol generating matrix, and then improving the response efficiency of generating aerosol. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is an overall schematic diagram of the heating structure in one embodiment disclosed in this application.

[0026] Figure 2 for Figure 1 A cross-sectional view along A-A1, in which the heating element is hidden.

[0027] Figure 3 for Figure 1 The cross-sectional view along A-A1 shows the heating element.

[0028] Figure 4 for Figure 3 Enlarged view of point M in the middle.

[0029] Figure 5 for Figure 1 The cross-sectional view along B-B1 shows the heating element.

[0030] Figure 6 for Figure 3 Enlarged view of point N in the middle.

[0031] Figure 7 This is a schematic diagram of the first shell in one embodiment disclosed in this application.

[0032] Figure 8 for Figure 7 Cross-sectional view along C-C1.

[0033] Figure 9 for Figure 7 Cross-sectional view along D-D1.

[0034] Figure 10 This is a schematic diagram of the second shell in one embodiment disclosed in this application.

[0035] Figure 11 for Figure 10 Cross-sectional view along E-E1.

[0036] Figure 12 This is a schematic diagram from another perspective of the second shell in one embodiment disclosed in this application.

[0037] The above drawings include the following reference numerals:

[0038] Heating structure 100, first shell 10, first receiving chamber 11, first opening 111, insertion part 12, insertion end 121, first main body 122, first connecting part 13, vent 14, air flow channel 15, second shell 20, second receiving chamber 21, second connecting part 22, second main body 23, second opening 24, third opening 25, heating element 30, heating element 31, base 311, resistive heating layer 312, first electrode 32, second electrode 33, first electrode lead 34, second electrode lead 35, receiving space 40. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0042] See also Figure 1-4 As shown, the present application provides a heating structure 100, which is used to heat an aerosol generating substrate.

[0043] Furthermore, the heating structure 100 includes a first shell 10, a second shell 20, and a heating element 30. The first shell 10 and the second shell 20 are connected to form a receiving space 40, and the heating element 30 is disposed in the receiving space 40 and is configured to generate heat when powered.

[0044] Furthermore, the first housing 10 is used to insert the aerosol-generating substrate and conduct heat from the heating element 30 to the aerosol-generating substrate, thereby heating and baking the aerosol-generating substrate. The second housing 20 is used to support the heating structure 100 and to install the heating structure 100 within the outer shell of the heat-not-burn device.

[0045] Furthermore, the thermal conductivity of the first shell 10 is greater than that of the second shell 20. This allows more of the heat generated by the heating element 30 to be absorbed by the first shell 10 and conducted to the aerosol-generating substrate. Therefore, in this embodiment, when the heating element 30 is powered on and generating heat, the first shell 10 inserted into the aerosol-generating substrate can more efficiently conduct the heat generated by the heating element 30 to the aerosol-generating substrate, thereby improving the utilization rate of the heat generated by the heating element 30 and the heating efficiency of the aerosol-generating substrate, thereby improving the response efficiency of aerosol generation.

[0046] Furthermore, the first shell 10 is made of a material with high thermal conductivity, and the material with high thermal conductivity includes but is not limited to one of copper alloy, aluminum alloy, aluminum-titanium alloy, magnesium alloy, zinc alloy and silver alloy.

[0047] The second housing 20 is made of a medium or low thermal conductivity material, including but not limited to metal or non-metal materials. Non-metal materials include but are not limited to zirconia ceramics, alumina ceramics, and ZTA ceramics. Metal materials include but are not limited to SUS304 stainless steel, SUS430 stainless steel, SUS904 stainless steel, SUS316 stainless steel, Kovar alloy, titanium alloy, and nickel alloy.

[0048] For further information, please refer to Figure 4 As shown, the heating element 30 includes a heating element 31, a first electrode 32 and a second electrode 33. The heating element 31, the first electrode 32 and the second electrode 33 are respectively disposed in the receiving space 40.

[0049] The first electrode 32 is held between the heating element 31 and the first shell 10 and is electrically connected to the heating element 31 . The second electrode 33 is electrically connected to the heating element 31 and is separated from the first electrode 32 . The second electrode 33 is suspended in the receiving space 40 .

[0050] The first electrode 32 and the second electrode 33 are respectively electrically connected to the heating element 31 to form a circuit for supplying power to the heating element 31. One of the first electrode 32 and the second electrode 33 is connected to the positive electrode of the heating element 31, and the other of the first electrode 32 and the second electrode 33 is connected to the negative electrode of the heating element 31.

[0051] Furthermore, the first electrode 32 includes but is not limited to any one of an electrode cap, an electrode ring, a plate electrode, or a track-type electrode. The second electrode 33 also includes but is not limited to any one of an electrode cap, an electrode ring, a plate electrode, or a track-type electrode.

[0052] Preferably, the first electrode 32 and the second electrode 33 are respectively one of the electrode cap and the electrode ring, so that the first electrode 32 and the second electrode 33 can be directly mounted on the heating element 31, without the need to use welding, locking or other fixing methods to fix the first electrode 32 and the second electrode 33 on the heating element 31.

[0053] Furthermore, the first electrode 32 and the second electrode 33 using an electrode cap or electrode ring structure can also be pre-assembled to the heating element 31 to form the heating element 30, and the heating element 30 can be further assembled into the receiving space 40. After the heating element 30 is assembled into the receiving space 40, the first electrode 32 of the electrode ring or electrode cap structure can also have a larger contact area with the first shell 10, thereby utilizing the larger contact area to achieve contact heat conduction over a larger area, thereby more efficiently conducting the heat emitted by the heating element 30 to the first shell 10 through the first electrode 32.

[0054] Preferably, the thermal conductivity of the first electrode 32 is greater than the thermal conductivity of the second electrode 33 , so that more heat generated by the heating element 30 is absorbed by the first electrode 32 and conducted to the first housing 10 .

[0055] Furthermore, the thermal conductivity of the first electrode 32 is the same as or similar to that of the first shell 10 , so that the heat conduction efficiency between the first electrode 32 and the first shell 10 is substantially the same.

[0056] Furthermore, the first electrode 32 and the second electrode 33 are each made of one of chromium-zirconium copper, dispersed copper, and oxygen-free copper. Preferably, the first electrode 32 and the second electrode 33 are both made of oxygen-free copper, so that the first electrode 32 and the second electrode 33 have advantages such as high conductivity, easy processing and welding, and corrosion resistance.

[0057] Furthermore, when the heating element 30 is assembled in the receiving space 40, based on the advantages that the first electrode 32 is easy to process and has a certain elasticity, the first electrode 32 can be supported between the heating element 31 and the first shell 10 to achieve fixed installation of the heating element 30 in the receiving space 40, avoiding the need to set up special fixing parts or fix the heating element 30 in the receiving space 40 by welding or the like.

[0058] At the same time, the first electrode 32 abutting between the heating element 31 and the first shell 10 can also more efficiently conduct the heat generated by the heating element 31 to the first shell 10 .

[0059] Further, see Figure 4-5 As shown, the heating element 31 includes a base 311 and a resistive heating layer 312. The resistive heating layer 312 covers the surface of the base 311, and the base 311 is used to support the resistive heating layer 312, the first electrode 32 and the second electrode 33.

[0060] Furthermore, the first electrode 32 and the second electrode 33 are respectively covered on the resistive heating layer 312 , and the first electrode 32 and the second electrode 33 are respectively electrically connected to the resistive heating layer 312 .

[0061] Furthermore, the substrate 311 is made of an insulating material with high thermal conductivity. For example, the substrate 311 can be made of, but is not limited to, any of aluminum nitride, diamond, silicon nitride, beryllium oxide, aluminum oxide, magnesium oxide, and composite ceramics.

[0062] Furthermore, the resistive heating layer 312 may be, but is not limited to, a heating sheet, a heating net, and a resistive conductive coating coated on the surface of the substrate 311 .

[0063] Further, see Figure 6-12 Combined with Figure 4 As shown, the first housing 10 has a first receiving compartment 11, and the second housing 20 has a second receiving compartment 21. The first housing 10 and the second housing 20 are connected so that the first receiving compartment 11 and the second receiving compartment 21 are communicated and define the receiving space 40.

[0064] In one embodiment, the first electrode 32 is located in the first receiving compartment 11 and abuts between the heating element 31 and the first housing 10. The second electrode 33 is located in the second receiving compartment 21 and is suspended therein, so that the second electrode 33 does not contact the second housing 20 or the first housing 10. This prevents the second electrode 33 from being electrically connected to the conductive first housing 10 or the conductive second housing 20, thereby preventing a short circuit.

[0065] Furthermore, the area covered by the first electrode 32 between the heating element 31 and the first receiving compartment 11 is larger than the area covered by the second electrode 33 on the heating element 31. This allows the first electrode 32 to have a larger contact area with the heating element 31 than the second electrode 33, and also allows the first electrode 32 to have a larger contact area with the first housing 10. As a result, the first electrode 32, with its high thermal conductivity, can more efficiently absorb and conduct heat generated by the heating element 31 to the first housing 10.

[0066] Furthermore, ignoring the area between the first electrode 32 and the second electrode 33 on the heating element 31, that is, ignoring the area on the heating element 31 not covered by either the first electrode 32 or the second electrode 33, a first area covered by the first electrode 32 on the heating element 31 accounts for 60% to 90% of the surface area of ​​the heating element 31, and a second area covered by the second electrode 33 on the heating element 31 accounts for 10% to 40% of the surface area of ​​the heating element 31. This allows more heat generated by the heating element 31 to be conducted to the first electrode 32.

[0067] Preferably, the first electrode 32 is completely housed in the first housing compartment 11, so that the portion of the heating element 31 located in the first housing compartment 11 is larger than the portion suspended in the second housing compartment 21. This allows more heat generated by the heating element 31 to be conducted to the first housing 10.

[0068] For further information, please refer to Figure 2 and Figure 4 As shown, the first housing 10 includes an inserting portion 12 and a first connecting portion 13 . The inserting portion 12 is used to be inserted into the aerosol generating substrate to heat and bake the inserted aerosol generating substrate. The first connecting portion 13 is used to be connected to the second housing 20 .

[0069] Furthermore, the insertion portion 12 has an insertion end 121, and the first connection portion 13 is connected to an end of the insertion portion 12 away from the insertion end 121 along the direction in which the first shell 10 is inserted into the aerosol-generating substrate. That is, the first connection portion 13 and the insertion end 121 are arranged opposite each other along the direction in which the first shell 10 is inserted into the aerosol-generating substrate.

[0070] Furthermore, the insertion portion 12 also includes a first body 122, which is connected between the insertion end 121 and the first connecting portion 13. The outer diameter of the insertion end 121 gradually increases from the first body 122 toward the first connecting portion 13, resulting in a generally tapered shape. This facilitates insertion of the aerosol-generating substrate into the insertion portion 12. The tapered shape can be either conical or pyramidal, though this is not a limitation.

[0071] Furthermore, the second housing 20 includes a second connecting portion 22 and a second main body 23 that are connected to each other. The second connecting portion 22 is connected to the first connecting portion 13 and covers the circumference of the first connecting portion 13. This ensures a fixed connection between the first housing 10 and the second housing 20. The second main body 23 is used to mount and secure the heating structure 100.

[0072] By covering the second connection part 22 on the circumferential side of the first connection part 13, the second connection part 22 with lower thermal conductivity is made relative to the first connection part 13 with higher thermal conductivity. After the heat emitted by the heating element 30 is conducted to the first connection part 13, it will be conducted more toward the first main body 122, thereby improving the efficiency and proportion of heat conduction to the insertion part 12.

[0073] Furthermore, the connection method between the first connection part 13 and the second connection part 22 includes, but is not limited to, riveting, threaded connection, plug-in connection, welding, interference fit connection, and fastener locking connection.

[0074] Preferably, the second connection portion 22 is riveted to the circumference of the first connection, so that the first shell 10 and the second shell 20 can be assembled automatically at a low assembly cost, and the connection between the first shell 10 and the second shell 20 is highly stable.

[0075] Furthermore, in one embodiment, the insertion portion 12 and the first connecting portion 13 are jointly constructed to form the first receiving bin 11, and the first opening 111 of the first receiving bin 11 is located at an end of the first connecting portion 13 away from the insertion end 121, and the heating element 31 enters the first receiving bin 11 from the first opening 111 and passes through the first connecting portion 13 and at least partially extends into the first main body 122 of the insertion portion 12.

[0076] By at least partially extending the heating element 31 into the first receiving chamber 11 corresponding to the first main body 122, the heating element 31 is in direct contact with the first main body 122 through the first electrode 32, so that part of the heat emitted by the heating element 31 will be directly conducted outward along the radial direction of the first main body 122 through the first electrode 32, and then the part of the heat will be conducted to the corresponding aerosol generating matrix through a shorter conduction path.

[0077] For further information, please refer to Figure 5 As shown, in one embodiment, the cross-sectional shape of the first receiving bin 11 along the radial direction of the first main body 122 is adapted to the corresponding cross-sectional shape of the heating element 30, so that the heating element 31 can be inserted into the first receiving bin 11 based on the limiting position of the first electrode 32.

[0078] Furthermore, in this embodiment, preferably, the cross-section of the first receiving bin 11 can be a regular shape such as a polygon, a circle, or an ellipse.

[0079] For further information, please refer to Figure 3-4 As shown, the first electrode 32 is electrically connected between the first housing 10 and the heating element 30, and the first electrode lead 34 of the first electrode 32 is electrically connected to the first housing 10 and passes through the second receiving compartment 21 to extend out of the second housing 20. This allows the first electrode lead 34 to be electrically connected to the first electrode 32 through the first housing 10, rather than directly connecting to the first electrode 32 within the first receiving compartment 11.

[0080] At the same time, the first electrode lead 34 is electrically connected to the first electrode 32 through the first shell 10, so that when power is supplied to the resistive heating layer 312, the first shell 10 is also in a powered state. Therefore, the first shell 10 will also directly generate heat in the powered state, thereby improving the heating efficiency of the heating structure 100.

[0081] For further information, please refer to Figure 10-11 As shown, in one embodiment, the second shell 20 includes a second opening 24 and a third opening 25 arranged opposite to each other, the second opening 24 is located at an end of the second connecting portion 22 close to the first shell 10, and the third opening 25 is located at an end of the second body 23 away from the second connecting portion 22.

[0082] The second main body 23 and the first connecting portion 13 are jointly constructed to form the second receiving compartment 21 , and the second opening 24 and the third opening 25 are respectively communicated with the second receiving compartment 21 .

[0083] Furthermore, the second electrode 33 extends from the second opening 24 into the second receiving compartment 21 , so that at least the portion of the heating element 30 corresponding to the second electrode 33 is suspended in the second receiving compartment 21 .

[0084] Further, please refer to Figure 3-4 As shown, the first electrode lead 34 enters the second receiving compartment 21 through the third opening 25 and is electrically connected to the end of the first connecting portion 13 away from the insertion end 121. The second electrode lead 35 extending from the second electrode 33 extends from the second receiving compartment 21 through the third opening 25 and out of the second housing 20.

[0085] Furthermore, the first housing 10 is provided with ventilation holes 14, which connect the first receiving compartment 11 with the exterior of the first housing 10. This allows the hot air flow within the receiving space 40 to be conducted to the aerosol-generating substrate through the ventilation holes 14. The number of ventilation holes 14 is not limited; preferably, multiple ventilation holes 14 are evenly distributed on the first body 122.

[0086] Please refer to Figure 5-6 As shown, in one embodiment, the heating element 30 completely fills the first receiving chamber 11 or separates the first receiving chamber 11 from the second receiving chamber 21. A plurality of ventilation holes 14 are evenly arranged on the first main body 122.

[0087] In another embodiment, the second receiving bin 21 connects the first receiving bin 11 with the outside of the second shell 20 through the second opening 24 and the third opening 25, and there is an air flow channel 15 between the heating element 31 and the first receiving bin 11, or there is an air flow channel 15 between the first electrode 32 and the first receiving bin 11, or there is an air flow channel 15 between the heating element 31 and the first electrode 32 and the first receiving bin 11 respectively.

[0088] The airflow channel 15 connects the second receiving compartment 21 with the vent 14. Thus, during inhalation, external air enters the receiving space 40 from the third opening 25, forming a hot airflow. After passing through the airflow channel 15 within the receiving space 40, the hot airflow flows out from the vent 14 and enters the aerosol-generating substrate. This allows for contact heat transfer to the aerosol-generating substrate through the first housing 10 while also allowing the hot airflow to bake and heat the aerosol-generating substrate. This improves the utilization rate of the heat generated by the heating element 31 and the heating efficiency of the aerosol-generating substrate.

[0089] On the other hand, the present application also provides a heat-without-combustion device, which includes the aforementioned heating structure 100. Therefore, the heat-without-combustion device also possesses all the technical effects of the heating structure 100. Since the technical effects of the heating structure 100 have been described in detail above, they will not be repeated here.

[0090] Furthermore, the heating without burning device also includes an outer shell, which is structured to form an installation space and a receiving cavity, the receiving cavity is used to receive the aerosol generating matrix, the heating structure 100 is arranged in the installation space, and the first shell 10 extends into the receiving cavity to heat and bake the aerosol generating matrix inserted in the receiving cavity.

[0091] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0092] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0093] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heating structure for heating an aerosol-generating substrate, characterized in that: The heating structure comprises: a first shell and a second shell, wherein the first shell and the second shell are connected to form a receiving space, wherein the first shell is used to insert the aerosol generating substrate, and the thermal conductivity of the first shell is greater than the thermal conductivity of the second shell; and The heating element is provided in the accommodation space and is configured to generate heat when powered.

2. The heating structure according to claim 1, characterized in that The heating body includes a heating element, a first electrode and a second electrode respectively arranged in the receiving space, the first electrode is held between the heating element and the first shell and is electrically connected to the heating element, the second electrode is electrically connected to the heating element and is separated from the first electrode, and the second electrode is suspended in the receiving space.

3. The heating structure according to claim 2, characterized in that: The first shell has a first receiving compartment, and the second shell has a second receiving compartment. The first shell is connected to the second shell so that the first receiving compartment is connected to the second receiving compartment and defines the receiving space, wherein the first electrode is located in the first receiving compartment, and the second electrode is located in the second receiving compartment.

4. The heating structure according to claim 3, characterized in that The area covered by the first electrode on the heating element is larger than the area covered by the second electrode on the heating element.

5. The heating structure according to claim 3, characterized in that: The heating element includes a substrate and a resistive heating layer, the resistive heating layer covers the surface of the substrate, the first electrode and the second electrode respectively cover the resistive heating layer, and the first electrode and the second electrode are respectively electrically connected to the resistive heating layer.

6. The heating structure according to claim 3, characterized in that The first housing includes an insertion portion and a first connecting portion, wherein the insertion portion has an insertion end, and the first connecting portion is connected to an end of the insertion portion away from the insertion end along the direction in which the first housing is inserted into the aerosol generating substrate; The second housing includes a second connection portion connected to the first connection portion and covering a circumference of the first connection portion.

7. The heating structure according to claim 6, characterized in that The inserting portion and the first connecting portion are jointly constructed to form the first receiving compartment, and the heating element passes through the first connecting portion and at least partially extends into the inserting portion.

8. The heating structure according to claim 6, characterized in that The second connection portion is riveted to a peripheral side of the first connection portion.

9. The heating structure according to claim 3, characterized in that: The first electrode is electrically connected between the first shell and the heating element, and a first electrode lead of the first electrode is electrically connected to the first shell and passes through the second receiving compartment to extend out of the second shell; The second electrode lead wire led out from the second electrode passes through the second receiving compartment to extend out of the second shell.

10. The heating structure according to any one of claims 3 to 9, characterized in that: The first shell is provided with a vent hole, and the vent hole communicates with the first receiving compartment and the outside of the first shell.

11. The heating structure according to claim 10, characterized in that The second receiving compartment communicates with the first receiving compartment and the outside of the second shell; An air flow channel is provided between the heating element and / or the first electrode and the first receiving compartment, and the air flow channel is connected to the second receiving compartment and the vent hole.

12. A heat-not-burn device, characterized in that: The heating without burning device comprises the heating structure according to any one of claims 1 to 11; and The outer shell is structured to form an installation space and a receiving cavity, the receiving cavity is used to receive the aerosol generating matrix, the heating structure is arranged in the installation space, and the first shell extends into the receiving cavity.

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