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 device, the heat preservation cavity is formed in the outer side of the heating bin, so that the outward dissipation speed of heat emitted by the heating bin is reduced under the action of the heat preservation cavity, heat preservation is conducted on the heating bin, the temperature dissipation speed in the heating bin is reduced, and energy needed by heating is saved; furthermore, an air flow channel is formed in the outer side of the heat preservation cavity, so that air flow flowing through the air flow channel can fully absorb heat continuously dissipated outwards from the heat preservation cavity, preheating of the flowing air flow is achieved, and the heat preservation efficiency is improved. And the heated air flow enters the aerosol generating product inserted into the heating bin along with the preheated air flow, so that the part of heat is recycled, the energy required by heating is further saved, and the utilization rate of the heat emitted outwards by the heating bin is increased.

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 appliance that heats and bakes aerosol-generating products to produce aerosols. During use, the heating element within the heat-not-burn device and the heated aerosol-generating product will emit heat. In existing technologies, most of this heat will be directly dissipated outward, resulting in heat loss. During reheating, a large amount of energy is required to heat the heating chamber to a preset temperature. At the same time, the emitted heat will cause the temperature of the heat-not-burn device's housing to rise, affecting the user's ability to hold the device. It also causes components such as the battery and circuit board built into the housing to operate in a relatively high temperature environment, affecting the service life. Therefore, existing heat-not-burn devices do not fully utilize the heat emitted during use. Utility Model Content

[0003] The main purpose of the present application is to provide a heating structure and a heat-without-combustion device to solve the problem in the prior art that the heat emitted by the heat-without-combustion device during use is not fully utilized.

[0004] According to one aspect of the present application, a heating structure is provided, wherein the heating structure is configured to include a heating chamber, a heat preservation cavity, and an air flow channel, wherein the heat preservation cavity is provided outside the heating chamber, and the air flow channel is provided outside the heat preservation cavity;

[0005] The heating chamber has an inlet and outlet end and a limiting end opposite to each other, and the air flow channel has an air inlet end and an air outlet end, the air inlet end is close to the inlet and outlet end, and the air outlet end is connected to the limiting end;

[0006] Wherein, the extension direction of at least part of the air flow channel is not parallel to the center line of the heating chamber.

[0007] Further, the heating structure includes a first sealing seat;

[0008] a second sealing seat, the second sealing seat being arranged opposite to the first sealing seat along the center line;

[0009] a heating element, the heating element being connected between the first sealing seat and the second sealing seat, and the heating element, the first sealing seat, and the second sealing seat defining the heating chamber;

[0010] A heat insulating member is arranged on the peripheral side of the heating member, the inner wall of the heat insulating member is spaced from the outer wall of the heating member, and together with the first sealing seat and the second sealing seat, defines the heat preservation cavity, and the internal structure of the heat insulating member forms the air flow channel.

[0011] Furthermore, the thermal insulation element includes a first thermal insulation tube, the inner wall of the first thermal insulation tube is spaced from the outer wall of the heating element, and together with the first sealing seat and the second sealing seat, defines the heat preservation cavity;

[0012] a second thermally insulated tube, wherein the second thermally insulated tube is sleeved around the first thermally insulated tube, and an inner wall of the second thermally insulated tube is spaced from an outer wall of the first thermally insulated tube; and

[0013] a heat sink disposed between the first thermally insulated tube and the second thermally insulated tube, wherein opposite sides of the heat sink along the radial direction of the first thermally insulated tube are respectively in contact with the outer wall of the first thermally insulated tube and the inner wall of the second thermally insulated tube;

[0014] Wherein, an extension direction of at least part of the heat sink is not parallel to the center line.

[0015] Furthermore, the inner wall of the second thermally insulated tube and / or the outer wall of the first thermally insulated tube are configured to form the heat sink.

[0016] Furthermore, at least part of the heat sink is spiral-shaped;

[0017] and / or at least part of the heat sink is S-shaped;

[0018] And / or, at least part of the heat sink is serrated.

[0019] Furthermore, the first sealing seat structure is formed with a guide hole, and the guide hole is connected to the inlet and outlet ends;

[0020] a first sealing groove, the first sealing groove being located on a peripheral side of the guide hole, and the end of the heat insulating member close to the air inlet end being inserted into the first sealing groove; and

[0021] An air inlet hole is connected to the air inlet end.

[0022] Furthermore, the second sealing seat is structured to form a limiting hole, and the limiting hole is connected to the limiting end;

[0023] a second sealing groove, the second sealing groove being located on a peripheral side of the limiting hole, and an end of the heat insulating member close to the air outlet end being inserted into the second sealing groove; and

[0024] An air guide hole is connected between the air outlet end and the limiting hole.

[0025] Furthermore, the second sealing seat includes a first seat, the first seat is sealed and connected to the inner wall of the heat insulating member and is close to the air outlet end, wherein the first sealing seat is configured to form the limiting hole; and

[0026] The second seat is sealed and connected to the outer wall of the heat insulation component and is close to the air outlet end, wherein the second seat is structured to form the air guide hole, and the second seat and the first seat jointly define the second sealing groove.

[0027] Furthermore, the air inlet end and the air outlet end are arranged opposite to each other along the length direction of the center line.

[0028] On the other hand, the present application also provides a heat-without-combustion device, which comprises any of the above-mentioned heating structures;

[0029] a housing in which the heating structure is housed; and

[0030] A power supply assembly is housed in the housing, wherein the power supply assembly is used to supply power to the heating structure.

[0031] In the present application, by arranging the insulation chamber on the outside of the heating chamber, the heat dissipated outward from the heating chamber will be reduced in the speed of dissipation under the action of the insulation chamber, and the heating chamber is insulated, thereby reducing the temperature dissipation speed in the heating chamber, saving the energy required for heat generation, and reducing the risk of excessive temperature of the shell of the heating non-combustion device. Further, by arranging the airflow channel on the outside of the insulation chamber, and setting the extension direction of at least part of the airflow channel to be non-parallel to the center line direction of the heating chamber, the extension length of the airflow channel located outside the insulation chamber is increased, so that the airflow flowing through the airflow channel can more fully absorb the heat that continues to be dissipated outward from the insulation chamber, thereby realizing preheating of the airflow, and entering the aerosol generating product inserted in the heating chamber together with the preheated airflow, so that part of the heat is recycled, thereby further saving the energy required for heat generation and improving the utilization rate of the heat dissipated outward from the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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:

[0033] Figure 1 This is a schematic diagram of a heating structure in an embodiment disclosed in this application.

[0034] Figure 2 for Figure 1 Cross-sectional view along A-A1.

[0035] Figure 3 This is a schematic diagram of inserting an aerosol-generating article into a heating structure according to an embodiment disclosed in the present application.

[0036] Figure 4 for Figure 1 Cross-sectional view along B-B1.

[0037] Figure 5 This is a schematic diagram of the second sealing seat in one embodiment disclosed in this application.

[0038] Figure 6 This is a schematic diagram of the first sealing seat in one embodiment disclosed in this application.

[0039] Figure 7 This is a schematic diagram of an embodiment disclosed in the present application in which a heat sink is disposed on the inner wall of the second thermal insulation tube.

[0040] The above drawings include the following reference numerals:

[0041] Heating structure 100, first sealing seat 10, guide hole 11, constant diameter section 111, variable diameter section 112, first sealing groove 12, air inlet 13, first limiting ring portion 14, first inner ring surface 141, first ring end surface 142, second sealing seat 20, first seat 21, limiting hole 211, second seat 22, air guide hole 221, wire hole 222, second sealing groove 23, first groove 231, second groove 232, outer ring portion 24, inner ring portion 25, second limiting Ring portion 26, second inner ring surface 261, second ring end surface 262, mixing chamber 27, heating element 30, thermal insulation element 40, first thermal insulation tube 41, second thermal insulation tube 42, heat sink 43, electrical connection line 50, heating chamber 60, inlet and outlet ends 61, limit end 62, center line 63, insulation chamber 70, air flow channel 80, air inlet end 81, air outlet end 82, air outlet hole 83, aerosol generating product 200, matrix section 210, cooling section 220, nozzle section 230. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] See also Figure 1-4 As shown, the present application provides a heating structure 100. The heating structure 100 is used to heat an aerosol-generating article 200, so that the heated aerosol-generating article 200 generates aerosol.

[0046] Further, see Figure 2 and Figure 4 As shown, the heating structure 100 is constructed to include a heating chamber 60, a heat preservation chamber 70, and an air flow channel 80. The heat preservation chamber 70 is separated between the heating chamber 60 and the air flow channel 80. The air flow channel 80 is connected to the heating chamber 60.

[0047] By locating the heat preservation chamber 70 outside the heating chamber 60, the heat dissipated from the heating chamber 60 is dissipated at a slower rate due to the heat preservation chamber 70, thereby maintaining the temperature of the heating chamber 60. This reduces the rate of temperature loss within the heating chamber 60, and reduces the heating time and energy required to heat the heating chamber 60 to the preset temperature. This saves heating energy and shortens the heating time, thereby increasing the aerosol generation rate and improving the user experience.

[0048] At the same time, the shell temperature of the heat-not-burn device having the heating structure 100 can also be reduced, thereby avoiding the risk of the shell temperature being too high, which may cause the user to have risks such as burning hands and mouths when holding and using the device.

[0049] Furthermore, the heating chamber 60 has opposing entry and exit ends 61 and a limiting end 62. The entry and exit end 61 is used to allow the aerosol-generating article 200 to enter or exit the heating chamber 60, and the limiting end 62 is used to limit the end of the substrate segment 210 of the aerosol-generating article 200 entering the heating chamber 60 to prevent the aerosol-generating article 200 from being over-inserted or under-inserted, resulting in the substrate segment 210 not being effectively heated in the heating chamber 60.

[0050] Furthermore, if the aerosol-generating article 200 is over-inserted, the cooling section 220 may not be able to effectively cool the generated aerosol, and the mouthpiece section 230 may not extend sufficiently beyond the housing for inhalation by the user. Furthermore, over-insertion also poses a risk of preventing the airflow within the airflow channel 80 from smoothly entering the base section 210.

[0051] Furthermore, the air flow channel 80 is provided outside the heat preservation chamber 70. The air flow channel 80 has an air inlet end 81 and an air outlet end 82, wherein the air inlet end 81 is close to the inlet and outlet end 61, and the air outlet end 82 is connected to the limiting end 62.

[0052] By arranging the airflow channel 80 on the outside of the insulation chamber 70 and setting the extension direction of at least part of the airflow channel 80 to be non-parallel to the center line 63 of the heating chamber 60, the extension length of the airflow channel 80 located outside the insulation chamber 70 is increased, so that the airflow flowing through the airflow channel 80 can more fully absorb the heat that continues to dissipate outward from the insulation chamber 70, thereby achieving preheating of the airflow, thereby achieving recycling of this part of the heat, and entering the aerosol generating product 200 inserted in the heating chamber 60 through the preheated airflow, thereby further saving the energy required to heat the heating chamber 60 and improving the utilization rate of the heat dissipated outward from the heating chamber 60.

[0053] At the same time, it can also further reduce the heat emitted from the heating chamber 60 and conducted to the shell, further avoiding the shell temperature being too high, resulting in the risk of burnt hands, burnt mouth, etc. when the user holds it in use.

[0054] And further reduce the heat emitted from the heating chamber 60 to the outside and conduct it to the power supply component, control component, etc. accommodated in the shell, affecting the service life of the power supply component and the control component.

[0055] Further, see Figure 2 and Figure 4-6 As shown, the heating structure 100 includes a first sealing seat 10, a second sealing seat 20, a heating element 30, and a thermal insulation element 40. The second sealing seat 20 is disposed opposite the first sealing seat 10 along the center line 63. The heating element 30 and the thermal insulation element 40 are connected between the first sealing seat 10 and the second sealing seat 20, respectively.

[0056] Furthermore, the heating element 30, the first sealing seat 10, and the second sealing seat 20 define the heating chamber 60. The thermal insulation member 40 is disposed around the heating element 30, with the inner wall of the thermal insulation member 40 spaced from the outer wall of the heating element 30. The thermal insulation member 40, the heating element 30, the first sealing seat 10, and the second sealing seat 20 collectively define the heat preservation chamber 70. The internal structure of the thermal insulation member 40 forms the air flow channel 80.

[0057] Furthermore, in one embodiment, a curved air duct is provided inside the heat insulating member 40 , and the air duct structure forms the air flow channel 80 .

[0058] In another embodiment, see Figure 2 and Figure 4 As shown, the thermal insulation member 40 includes a first thermal insulation tube 41, a second thermal insulation tube 42, and a heat sink 43. The second thermal insulation tube 42 is sleeved around the first thermal insulation tube 41, and the inner wall of the second thermal insulation tube 42 is spaced from the outer wall of the first thermal insulation tube 41 to form a space for accommodating the heat sink 43.

[0059] The heat sink 43 is respectively attached to the outer wall of the first heat-insulated tube 41 and the inner wall of the second heat-insulated tube 42 on opposite sides along the radial direction of the first heat-insulated tube 41, and together with the outer wall of the first heat-insulated tube 41 and the inner wall of the second heat-insulated tube 42, defines the air flow channel 80.

[0060] Furthermore, the extension direction of at least part of the heat sink 43 is not parallel to the center line 63, so that the extension direction of the airflow duct 80 is not completely consistent with the length direction of the center line 63, thereby effectively extending the movement path of the airflow in the airflow channel, and thereby increasing the contact area and contact time between the airflow flowing through the airflow duct 80 and the first insulation tube 41, the second insulation tube 42 and the heat sink 43, thereby effectively absorbing the heat dissipated from the insulation chamber 70 to the airflow duct 80.

[0061] Furthermore, the inner wall of the first insulation tube 41 is spaced from the outer wall of the heating element 30 , and defines the heat preservation cavity 70 together with the first sealing seat 10 and the second sealing seat 20 .

[0062] In some embodiments, the heat preservation cavity 70 is not filled with any heat preservation material, so that the heat preservation cavity 70 is a hollow cavity.

[0063] In other embodiments, the heat-insulating cavity 70 is filled with heat-insulating materials, such as heat-insulating cotton, etc., so as to further improve the heat-insulating effect of the heat-insulating cavity 70 .

[0064] Furthermore, in the first embodiment, the heat sink 43 is independently provided between the first thermal insulation tube 41 and the second thermal insulation tube 42 .

[0065] In a second embodiment, the outer wall of the first thermal insulation tube 41 extends radially outward to form the heat sink 43 .

[0066] In the third embodiment, the inner wall of the second thermal insulation tube 42 extends radially inward to form the heat sink 43 .

[0067] In a fourth embodiment, the outer wall of the first thermal insulation tube 41 extends radially outward to form a portion of the heat sink 43 , and the inner wall of the second thermal insulation tube 42 extends radially inward to form another portion of the heat sink 43 .

[0068] Furthermore, in the first embodiment, at least a portion of the heat sink 43 is spiral-shaped, so that at least a portion of the heat sink 43 is disposed between the first thermal insulation tube 41 and the second thermal insulation tube 42 .

[0069] Preferably, see Figure 7 As shown, in this embodiment, the heat sink 43 is all spiral in structure from the first sealing seat 10 to the second sealing seat 20, so that the air flow channel 80 has a regular structure and a longer extension length, so that the air flow flowing through the air flow channel 80 can fully contact the first insulation tube 41, the second insulation tube 42 and the heat sink 43.

[0070] In a second embodiment, at least some of the heat sinks 43 are S-shaped. In this embodiment, multiple heat sinks 43 are disposed between the first and second insulated tubes 41, 42, and are spaced apart in an S-shaped pattern. This allows for the formation of an airflow channel 80 between adjacent heat sinks 43 and the corresponding first and second insulated tubes 41, 42, resulting in multiple airflow channels 80 between the first and second insulated tubes 41, 42.

[0071] In a third embodiment, at least some of the heat sinks 43 are zigzag-shaped. In this embodiment, multiple heat sinks 43 are disposed between the first and second insulated tubes 41, 42. These fins 43 are spaced apart in a zigzag pattern. This creates an airflow channel 80 between adjacent heat sinks 43 and their corresponding first and second insulated tubes 41, 42, resulting in multiple airflow channels 80 between the first and second insulated tubes 41, 42.

[0072] In a fourth embodiment, the heat sink 43 includes a first portion, a second portion, and a third portion. The first portion has a structure selected from the group consisting of the spiral, S-shaped, and zigzag shapes; the second portion has a structure selected from the group consisting of the spiral, S-shaped, and zigzag shapes; and the third portion has a structure selected from the group consisting of the spiral, S-shaped, and zigzag shapes.

[0073] Furthermore, the heat sink 43 may further include a fourth portion, and the fourth portion is linear.

[0074] For further information, please refer to Figure 2 and Figure 6 As shown, the first sealing seat 10 is constructed to have a guide hole 11 formed therein, which communicates with the inlet and outlet ends 61. The guide hole 11 includes a constant diameter section 111 and a variable diameter section 112, with the constant diameter section 111 communicating between the inlet and outlet ends 61 and the variable diameter section 112. The constant diameter section 111 has a diameter smaller than that of the heating chamber 60, and the variable diameter section 112 gradually decreases in diameter as it approaches the constant diameter section 111.

[0075] The variable diameter section 112 can be provided to guide and position the aerosol-generating article 200 before it enters the heating chamber 60, thereby guiding the aerosol-generating article 200 smoothly into the heating chamber 60. The constant diameter section 111 is provided, and its diameter is smaller than that of the receiving chamber, so that the elastically deformable constant diameter section 111 can seal and clamp the aerosol-generating article 200 inserted into the heating chamber 60 radially inward along the constant diameter section 111, thereby reducing the risk of temperature loss in the heating chamber 60 and limiting the aerosol-generating article 200 to prevent it from exiting the heating chamber 60.

[0076] Further, see Figure 2As shown, the air inlet end 81 and the air outlet end 82 are arranged opposite each other along the length of the centerline 63. The first sealing seat 10 is further formed with a first sealing groove 12 and an air inlet hole 13. The air inlet hole 13 is connected to the air inlet end 81. The first sealing groove 12 is located around the guide hole 11, and the end of the thermal insulation member 40 closest to the air inlet end 81 is inserted into the first sealing groove 12.

[0077] Furthermore, one end of the first insulation tube 41 and the second insulation tube 42 close to the air inlet end 81 are respectively at least partially inserted into the first sealing groove 12 , so that the air inlet end 81 is located in the first sealing groove 12 .

[0078] In the first embodiment, the air inlet 13 penetrates the first sealing seat 10 along the length of the centerline 63 and connects the first sealing groove 12 to the outside. Thus, external airflow passes through the air inlet 13 through the first sealing seat 10 and enters the airflow channel 80 from the air inlet end 81 located in the first sealing groove 12.

[0079] In the second embodiment, the air inlet hole 13 penetrates the first sealing seat 10 inwardly along the radial direction of the heating chamber 60 and communicates with the guide hole 11 corresponding to the first sealing groove 12 and the reducing section 112, so that external air flows from the air guide hole 221 through the air inlet hole 13 and enters the air flow channel 80 from the air inlet end 81 located in the first sealing groove 12.

[0080] In the third embodiment, the air inlet hole 13 penetrates the first sealing seat 10 radially outward from the heating chamber 60 and connects the first sealing groove 12 to the outside. Thus, external airflow passes through the first sealing seat 10 from the air inlet hole 13 and enters the airflow channel 80 from the air inlet end 81 located in the first sealing groove 12.

[0081] Further, see Figure 2 and Figure 5 As shown, the second sealing seat 20 is constructed to form a limiting hole 211, a second sealing groove 23 and an air guide hole 221. The limiting hole 211 is connected to the limiting end 62. The second sealing groove 23 is located on the circumferential side of the limiting hole 211, and the end of the heat insulation member 40 close to the air outlet end 82 is inserted into the second sealing groove 23. The air guide hole 221 is connected between the air outlet end 82 and the limiting hole 211. This allows the airflow flowing out of the air outlet end 82 in the air flow channel 80 to flow through the air guide hole 221 and the limiting hole 211 in sequence before entering the heating chamber 60.

[0082] Furthermore, one end of the first insulation tube 41 and the second insulation tube 42 close to the gas outlet end 82 are respectively at least partially inserted into the second sealing groove 23 , so that the gas outlet end 82 is located in the second sealing groove 23 .

[0083] Furthermore, the second sealing seat 20 includes a first seat 21 and a second seat 22. The first seat 21 is sealed to the inner wall of the heat insulating member 40 and is close to the air outlet 82. The first seat 21 is configured to form the limiting hole 211.

[0084] The second seat 22 is sealed to the outer wall of the second insulation tube 42 and is close to the air outlet 82. The second seat 22 is configured to form the air guide hole 221, and the second seat 22 and the first seat 21 together define the second sealing groove 23.

[0085] Further, see Figure 2 and Figure 4 As shown, the airflow channel 80 has multiple air outlet holes 83 at the air outlet end 82, and the second seat 22 is provided with an air guide hole 221 corresponding to each air outlet hole 83. The first seat 21 and the second seat 22 are connected to form a mixing chamber 27. The mixing chamber 27 communicates between the limiting hole 211 and the multiple air guide holes 221. This allows the airflow from each air outlet hole 83 to enter the mixing chamber 27 through the corresponding air guide hole 221 for mixing, and then enter the heating chamber 60 from the mixing chamber 27 through the limiting hole 211.

[0086] Further, in one embodiment, see Figure 5 As shown, the second seat 22 has an outer ring portion 24 and an inner ring portion 25, and the outer ring portion 24 and the outer side wall of the first seat 21 define the second sealing groove 23, and the inner ring portion 25 is located in the second sealing groove 23 and between the outer ring portion 24 and the outer side wall of the first seat 21, and separates the second sealing groove 23 into a first groove 231 and a second groove 232.

[0087] Furthermore, a first groove 231 is defined between the inner ring portion 25 and the outer sidewall of the first seat 21. The end of the first thermal insulation tube 41 corresponding to the gas outlet end 82 is sealed and inserted into the first groove 231. A second groove 232 is defined between the inner ring portion 25 and the outer ring portion 24. The end of the second thermal insulation tube 42 corresponding to the gas outlet end 82 is sealed and inserted into the second groove 232.

[0088] Further, see Figure 5-6As shown, the second sealing seat 20 is further structured to form a wire hole 222 , and the heating electrical connection wire 50 is connected from the outside through the wire hole 222 and extends into the heat preservation cavity 70 to be electrically connected to the heating element 30 .

[0089] Furthermore, in one embodiment, the heating element 30 is a heating tube. The first sealing seat 10 is configured to include a first retaining ring portion 14. The first retaining ring portion 14 communicates with the guide hole 11. The first retaining ring portion 14 includes a first inner ring surface 141 and a first ring end surface 142. The first ring end surface 142 engages with the first inner ring surface 141 and faces the second sealing seat 20.

[0090] The first seat 21 is formed with a second limiting ring portion 26 , which includes a second inner ring surface 261 and a second ring end surface 262 . The second ring end surface 262 is connected to the second inner ring surface 261 and faces the first sealing seat 10 .

[0091] One end of the heating tube close to the first sealing seat 10 is inserted into the first limiting ring portion 14 , abuts against the first ring end surface 142 , and is radially limited by the first inner ring surface 141 .

[0092] One end of the heating tube close to the second sealing seat 20 is inserted into the second limiting ring portion 26 , abuts against the second ring end surface 262 , and is radially limited by the second inner ring surface 261 .

[0093] In another aspect, the present application further provides a heat-without-combustion device, comprising the aforementioned heating structure 100. Therefore, the heat-without-combustion device possesses all the technical effects of the aforementioned heating structure 100. Since the technical effects of the heating structure 100 have been described in detail above, they will not be repeated here.

[0094] Furthermore, the heat-without-combustion device further comprises a housing and a power supply assembly. The heating structure 100 and the power supply assembly are respectively accommodated in the housing. The power supply assembly is used to supply power to the heating structure 100.

[0095] 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.

[0096] 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.

[0097] 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, characterized in that: The heating structure is formed with a heating chamber, a heat preservation cavity and an air flow channel, the heat preservation cavity is arranged outside the heating chamber, and the air flow channel is arranged outside the heat preservation cavity; The heating chamber has an inlet and outlet end and a limiting end opposite to each other, and the air flow channel has an air inlet end and an air outlet end, the air inlet end is close to the inlet and outlet end, and the air outlet end is connected to the limiting end; Wherein, the extension direction of at least part of the air flow channel is not parallel to the center line of the heating chamber.

2. The heating structure according to claim 1, characterized in that The heating structure includes a first sealing seat; a second sealing seat, the second sealing seat being arranged opposite to the first sealing seat along the center line; a heating element, the heating element being connected between the first sealing seat and the second sealing seat, and the heating element, the first sealing seat, and the second sealing seat defining the heating chamber; A heat insulating member is provided on the peripheral side of the heating member, the inner wall of the heat insulating member is spaced from the outer wall of the heating member, and together with the first sealing seat and the second sealing seat, defines the heat preservation cavity, and the internal structure of the heat insulating member forms the air flow channel.

3. The heating structure according to claim 2, characterized in that: The thermal insulation element includes a first thermal insulation tube, the inner wall of the first thermal insulation tube is spaced from the outer wall of the heating element, and together with the first sealing seat and the second sealing seat, defines the heat preservation cavity; a second thermal insulation tube, wherein the second thermal insulation tube is sleeved on a circumferential side of the first thermal insulation tube, and an inner wall of the second thermal insulation tube is spaced from an outer wall of the first thermal insulation tube; as well as a heat sink disposed between the first thermally insulated tube and the second thermally insulated tube, wherein opposite sides of the heat sink along the radial direction of the first thermally insulated tube are respectively in contact with the outer wall of the first thermally insulated tube and the inner wall of the second thermally insulated tube; Wherein, an extension direction of at least part of the heat sink is not parallel to the center line.

4. The heating structure according to claim 3, characterized in that: The inner wall of the second thermally insulated tube and / or the outer wall of the first thermally insulated tube are configured to form the heat dissipation fins.

5. The heating structure according to claim 3, characterized in that: At least part of the heat sink is spiral-shaped; and / or, at least part of the heat sink is S-shaped; And / or, at least part of the heat sink is serrated.

6. The heating structure according to claim 2, characterized in that: The first sealing seat structure is formed with a guide hole, and the guide hole is connected to the inlet and outlet ends; a first sealing groove, the first sealing groove being located on a peripheral side of the guide hole, and the end of the heat insulating member close to the air inlet end being inserted into the first sealing groove; and An air inlet hole is connected to the air inlet end.

7. The heating structure according to claim 6, characterized in that The second sealing seat is structured to form a limiting hole, and the limiting hole is connected to the limiting end; a second sealing groove, the second sealing groove being located on a peripheral side of the limiting hole, and an end of the heat insulating member close to the air outlet end being inserted into the second sealing groove; as well as An air guide hole is connected between the air outlet end and the limiting hole.

8. The heating structure according to claim 7, characterized in that: The second sealing seat includes a first seat, the first seat is sealed and connected to the inner wall of the heat insulation component and is close to the air outlet end, wherein the first sealing seat is configured to form the limiting hole; and The second seat is sealed and connected to the outer wall of the heat insulation component and is close to the air outlet end, wherein the second seat is structured to form the air guide hole, and the second seat and the first seat jointly define the second sealing groove.

9. The heating structure according to claim 1, characterized in that The air inlet end and the air outlet end are arranged opposite to each other along the length direction of the center line.

10. 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 9; a housing in which the heating structure is housed; and A power supply component is housed in the shell, wherein the power supply component is used to supply power to the heating structure.

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