Heating structure and heating non-combustion atomizer

Abstract

A heating structure and a heating non-combustion atomizer relate to the technical field of electronic atomization, and the heating structure comprises a heat exchange core and an airflow trap. A plurality of heat exchange holes are formed in the heat exchange core, and the heat exchange core is used for heating airflow flowing into the heat exchange holes. An airflow trapping cavity is formed in the airflow trap, a plurality of air outlet holes are formed in the side wall of the airflow trap, an airflow transfer cavity is formed between the airflow trap and the heat exchange core, and heated airflow can flow to the airflow transfer cavity. The airflow trap is used for being inserted into an aerosol forming substrate, the airflow trap is further used for gathering airflow in the airflow transfer cavity into the airflow trapping cavity, and the airflow in the airflow trapping cavity flows into the aerosol forming substrate through the air outlet hole. After being gathered, the hot air flow can flow into the aerosol-forming substrate at a higher flow speed, so that the convective heat exchange between the hot air flow and the aerosol-forming substrate is enhanced, and the heating effect of the hot air flow is further enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization, and in particular to a heating structure and a heat-without-combustion atomizer. Background Art

[0002] Heat-not-burn atomizers usually include a heating structure and a power supply structure. The heating structure is used to heat the aerosol-forming matrix, and the power supply structure is used to supply power to the heating structure. When the heating structure heats the aerosol-forming matrix by means of bottom hot air flow, the aerosol-forming matrix cannot be fully heated, so circumferential heating is often required as an auxiliary. However, when circumferential heating is used, the outer side of the aerosol-forming matrix is easily burned, resulting in a burnt smell, which affects the inhalation experience of the aerosol-forming matrix. Utility Model Content

[0003] The present application provides a heating structure and a heat-without-burning atomizer, the main purpose of which is to enhance the heating effect of hot air flow.

[0004] According to a first aspect of the present application, a heating structure is provided, comprising:

[0005] A heat exchange core, wherein a plurality of heat exchange holes are provided on the heat exchange core, and the heat exchange core is used to heat the airflow flowing into the heat exchange holes; and

[0006] An airflow collector, wherein an airflow collecting chamber is provided in the airflow collector, a plurality of air outlet holes are provided on the side wall of the airflow collector, and an airflow transfer chamber is provided between the airflow collector and the heat exchange core, and the heated airflow can flow to the airflow transfer chamber;

[0007] The airflow collector is used to be inserted into the aerosol forming matrix, and the airflow collector is also used to gather the airflow in the airflow transfer chamber into the airflow collecting chamber, and the airflow in the airflow collecting chamber flows into the aerosol forming matrix through the air outlet.

[0008] In one embodiment, the diameter of the air outlet hole is 0.2 mm-0.8 mm.

[0009] In one embodiment, along the axial direction of the airflow collector, at least a first collecting tube and a second collecting tube are formed on the airflow collector, the first collecting tube is located on a side away from the heat exchange core, and the second collecting tube is located on a side close to the heat exchange core; the first collecting tube and the second collecting tube are both provided with the air outlet holes, and the total air outlet volume of the first collecting tube is less than the total air outlet volume of the second collecting tube.

[0010] In one embodiment, the diameter of the air outlet hole is 0.2 mm-0.5 mm, and the porosity of the plurality of air outlet holes on the airflow collector is 60%-75%.

[0011] In one embodiment, a plurality of the air outlet holes are distributed in an array around the axis of the air flow trap to form an air outlet circle, and a plurality of the air outlet circles are distributed in an array along the axial direction of the air flow trap.

[0012] In one embodiment, the air flow trap includes an air flow trapping main body and a sleeve which are communicated with each other; a plurality of the air outlet holes are formed in the air flow trapping main body, and the air flow trapping main body is used for being inserted into the aerosol forming matrix; the bottom of the sleeve is connected to one end of the air flow trapping main body close to the heat exchange core, the sleeve is sleeved outside the heat exchange core, and an air flow transfer cavity is formed between one end surface of the sleeve and the heat exchange core facing the air flow trapping main body.

[0013] In one embodiment, a fastener is fixed between the heat exchange core and the sleeve in the radial direction of the sleeve.

[0014] In one embodiment, a heating element is further included, and the heating element is fixed to the side wall of the heat exchange core and is used for heating the heat exchange core; and / or, the fastener is a heat insulation and insulation part.

[0015] In one embodiment, the air flow trap further includes a conical part, and the conical part is fixed to one end of the air flow trapping main body away from the heat exchange core.

[0016] According to a second aspect of the present application, a heat-not-burn atomizer is provided, which includes a power supply, a control board and the above heating structure, the power supply is used for supplying electric energy to the heating structure, and the control board is used for controlling the working state of the heating structure.

[0017] According to the heating structure in the above embodiment, the air flow trap can gather the air flow (hereinafter referred to as hot air flow) heated by the heat exchange core into the air flow trapping cavity. As the user sucks the aerosol forming matrix, the air flow gathered in the air flow trapping cavity can flow into the aerosol forming matrix through a plurality of air outlet holes. After the hot air flow is gathered, it can flow into the aerosol forming matrix at a greater flow rate, strengthening the convective heat transfer between the hot air flow and the aerosol forming matrix, and further enhancing the heating effect of the hot air flow. The air flow transfer cavity between the air flow trap and the heat exchange core can temporarily store the hot air flow flowing out of the heat exchange core, that is, provide a certain storage space for the hot air flow, facilitating the air flow trap to fully and quickly gather the hot air flow. The designed heating structure can fully heat the aerosol forming matrix only by means of the hot air flow, without circumferential auxiliary heating, and will not bake the outside of the aerosol forming matrix, effectively improving the user's sucking experience of the aerosol forming matrix. Description of the Drawings

[0018] Figure 1 It is a schematic cross-sectional view of a heating structure in an embodiment of the present application;

[0019] Figure 2 Explosion schematic diagram of the heating structure in an embodiment of the present application;

[0020] Figure 3 Plan schematic diagram of the air flow trap in an embodiment of the present application;

[0021] Figure 4 Three-dimensional schematic diagram of the air flow trap in an embodiment of the present application;

[0022] Figure 5 Three-dimensional schematic diagram of the heat exchanger in an embodiment of the present application;

[0023] Figure 6 Explosion schematic diagram of the heating structure in another embodiment of the present application;

[0024] Figure 7 Cross-sectional schematic diagram of the heating structure in another embodiment of the present application;

[0025] Figure 8 Cross-sectional schematic diagram of the heat-not-burn atomizer without inserting the aerosol-forming substrate in an embodiment of the present application;

[0026] Figure 9 Cross-sectional schematic diagram of the heat-not-burn atomizer with inserted aerosol-forming substrate in an embodiment of the present application.

[0027] Explanation of reference numerals: 1. Heating structure, 2. Power supply, 3. Control board, 4. Housing, 5. Aerosol-forming substrate, 11. Air flow trap, 111. Air outlet hole, 112. Air flow trap main body, 1121. First trap tube, 1122. Second trap tube, 1123. Third trap tube, 113. Sleeve, 114. Conical part, 12. Heat exchange core, 121. Heat exchange hole, 122. Enclosure ring, 13. Fastener, 14. Heating element, 15. Bracket storage body, 151. Storage cylinder, 152. Sleeve, 16. Top cover, 161. Through hole, 162. First air inlet hole, 17. Base, 171. Support tube, 1711. Stopping surface, 1712. Second air inlet hole, A. Air flow trap cavity, B. Air flow transfer cavity, C. First chamber, D. Second chamber, E. Annular chamber. Detailed implementation manners

[0028] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. 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, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and 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 description in the specification and the general technical knowledge in the art.

[0029] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0030] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0031] When the currently designed heating structure uses a hot air flow to heat the aerosol-forming matrix, a hot air flow is first generated at the bottom of the aerosol-forming matrix, and the hot air flow directly flows into the aerosol-forming matrix. Since the convective heat exchange effect between the hot air flow and the aerosol-forming matrix is insufficient, circumferential heating is required as an auxiliary to ensure the heating effect of the aerosol-forming matrix. However, when circumferential heating is used, the outside of the aerosol-forming matrix is baked first, which can easily burn the outside of the aerosol-forming matrix and produce a burnt smell, affecting the suction experience of the aerosol-forming matrix. Based on this, the present application improves the heating structure, enhances the heating effect of the hot air flow, and designs a heating structure that does not require circumferential heating and can heat the aerosol-forming matrix only by hot air flow. The specific technical scheme of the heating structure is introduced as follows:

[0032] See also Figures 1-6 In one embodiment of the present application, a heating structure 1 is provided, comprising: a heat exchange core 12 and an airflow collector 11 .

[0033] The heat exchange core 12 is provided with a plurality of heat exchange holes 121 , and the heat exchange core 12 is used to heat the airflow flowing into the heat exchange holes 121 .

[0034] An air flow collector 11 is provided with an air flow collection chamber A. A plurality of air outlet holes 111 are formed in the side wall of the air flow collector 11. An air flow transfer chamber B is provided between the air flow collector 11 and the heat exchange core 12, and the heated air flow can flow into the air flow transfer chamber B.

[0035] The air flow collector 11 is used to be inserted into the aerosol forming substrate 5, and the air flow collector 11 is also used to gather the air flow in the air flow transfer chamber B into the air flow collection chamber A, and the air flow in the air flow collection chamber A flows into the aerosol forming substrate 5 through the air outlet holes 111.

[0036] With the heating structure 1 in the above-mentioned embodiment, the air flow collector 11 can gather the air flow (hereinafter referred to as the hot air flow) heated by the heat exchange core 12 into the air flow collection chamber A. As the user sucks the aerosol forming substrate 5, the air flow gathered in the air flow collection chamber A can flow into the aerosol forming substrate 5 through the plurality of air outlet holes 111. After the hot air flow is gathered, it can flow into the aerosol forming substrate 5 at a greater flow rate, strengthening the convective heat transfer between the hot air flow and the aerosol forming substrate 5, and further enhancing the heating effect of the hot air flow. The air flow transfer chamber B between the air flow collector 11 and the heat exchange core 12 can temporarily store the hot air flow flowing out of the heat exchange core 12, that is, provide a certain storage space for the hot air flow, facilitating the air flow collector 11 to gather the hot air flow fully and quickly. The designed heating structure 1 can fully heat the aerosol forming substrate 5 only by the hot air flow, without circumferential auxiliary heating, and will not bake the outside of the aerosol forming substrate 5, effectively improving the user's sucking experience of the aerosol forming substrate 5.

[0037] In some embodiments, the aperture of the air outlet hole 111 is 0.2 mm - 0.8 mm.

[0038] Please refer to Figures 1-3 , in one embodiment, the aperture of the air outlet hole 111 is 0.6 mm - 0.8 mm. Along the axial direction of the air flow collector 11, at least a first collection tube 1121 and a second collection tube 1122 are formed on the air flow collector 11. The first collection tube 1121 is located on the side away from the heat exchange core 12, and the second collection tube 1122 is located on the side close to the heat exchange core 12. The air outlet holes 111 are formed on both the first collection tube 1121 and the second collection tube 1122, and the total air outlet volume of the first collection tube 1121 is less than the total air outlet volume of the second collection tube 1122. Among them, a plurality of air outlet holes 111 are formed on both the first collection tube 1121 and the second collection tube 1122, and the plurality of air outlet holes 111 are, for example, 2, 3, 4, 5, etc. Taking the first collection tube 1121 as an example, the meaning of the total air outlet volume is described. The total air outlet volume refers to the sum of the air outlet volumes of all the air outlet holes 111 on the first collection tube 1121, and the air outlet volume is also the hot air flow rate flowing out of the air outlet hole 111.

[0039] At least a first collection tube 1121 and a second collection tube 1122 are formed on the air flow collector 11. The total air outlet volume on the first collection tube 1121 is less than that on the second collection tube 1122. Also, the first collection tube 1121 is relatively farther away from the heat exchange core 12, and the second collection tube 1122 is relatively closer to the heat exchange core 12. That is, the first collection tube 1121 is relatively farther away from the bottom of the aerosol formation matrix 5, and the second collection tube 1122 is relatively closer to the bottom of the aerosol formation matrix 5. Thus, the air flow collector 11 can form at least two gradients, and the area of the aerosol formation matrix 5 closer to the bottom can obtain more hot air flow compared to the area of the aerosol formation matrix 5 farther from the bottom. When the hot air flow flows into the area relatively closer to the bottom side of the aerosol formation matrix 5, the hot air flow can have a longer flow path within the aerosol formation matrix 5, which can improve the heating effect of the hot air flow on the aerosol formation matrix 5. Through the air outlet holes 111 on the first collection tube 1121 and the second collection tube 1122, the hot air flow can heat different segments in the axial direction of the aerosol formation matrix 5, facilitating the overall heating of the aerosol formation matrix 5.

[0040] For example, as Figure 3 shown, a first collection tube 1121, a second collection tube 1122, and a third collection tube 1123 are successively formed on the air flow collector 11 from top to bottom. The total air outlet volume on the first collection tube 1121, the second collection tube 1122, and the third collection tube 1123 continuously increases.

[0041] Specifically, on the premise that the aperture diameters of the air outlet holes 111 on each collection tube are the same, 2 air outlet holes 111 arrayed around the axis of the first collection tube 1121 are opened on the first collection tube 1121, 3 air outlet holes 111 arrayed around the axis of the second collection tube 1122 are opened on the second collection tube 1122, and 4 air outlet holes 111 arrayed around the axis of the third collection tube 1123 are opened on the third collection tube 1123. It can be understood that the first collection tube 1121, the second collection tube 1122, and the third collection tube 1123 are coaxially distributed.

[0042] More specifically, on the premise that the number of air outlet holes 111 on each collection tube is the same, the aperture diameters of the air outlet holes 111 on the first collection tube 1121, the air outlet holes 111 on the second collection tube 1122, and the air outlet holes 111 on the third collection tube 1123 gradually increase. For multiple air outlet holes 111 on the same collection tube, the aperture diameters can be the same or different. When the aperture diameters of multiple air outlet holes 111 on the same collection tube are different, the average aperture diameters of the air outlet holes 111 on the first collection tube 1121, the air outlet holes 111 on the second collection tube 1122, and the air outlet holes 111 on the third collection tube 1123 gradually increase.

[0043] Specifically, the pore diameters of the air outlet holes 111 on the first collection tube 1121, the air outlet holes 111 on the second collection tube 1122, and the air outlet holes 111 on the third collection tube 1123 increase in sequence, and the numbers of the air outlet holes 111 on the first collection tube 1121, the second collection tube 1122, and the third collection tube 1123 increase in sequence.

[0044] When the first collection tube 1121, the second collection tube 1122, and the third collection tube 1123 are formed on the air flow trap 11, at least three gradients can be formed, enhancing the heating effect of the hot air flow on the aerosol formation matrix 5 and facilitating the overall heating of the aerosol formation matrix 5. In other embodiments, based on the concept of forming a gradient gas outlet volume on different sections of the air flow trap 11, the number of collection tubes can also be 4, 5, 6, etc. The numbers and pore diameters of the air outlet holes 111 on different collection tubes can also be combined in other ways to meet the requirements of the total gas outlet volume of different sections. The so-called first collection tube 1121, second collection tube 1122, and third collection tube 1123 are only for illustrative purposes and should not be construed as a limitation to this application.

[0045] Please refer to Figure 4 , in another embodiment, the pore diameter of the air outlet hole 111 is 0.2 mm - 0.5 mm, and the porosity of multiple air outlet holes 111 on the air flow trap 11 is 60% - 75%. The pore diameter of the air outlet hole 111 is 0.2 mm - 0.5 mm, which is relatively small and equivalent to a microporous structure. In this pore diameter range, when the hot air flow passes through the air outlet hole 111 and flows into the aerosol formation matrix 5, the hot air flow has a stronger flow force, that is, a greater flow velocity, facilitating the enhancement of the convective heat transfer effect between the hot air flow and the aerosol formation matrix 5, improving the thermal efficiency, and also facilitating the hot air flow to provide a more uniform micro-air flow heating effect to the entire aerosol formation matrix 5. The so-called porosity refers to the porosity of the air flow trap 11 inserted into the aerosol formation matrix 5. In this porosity range, it can ensure that there are enough air outlet holes 111 on the air flow trap 11, thereby facilitating the provision of sufficient hot air flow to the aerosol formation matrix 5.

[0046] Please refer to Figure 4 , specifically, multiple air outlet holes 111 are arrayed around the axis of the air flow trap 11 to form an air outlet circle, multiple air outlet circles are arrayed along the axial direction of the air flow trap 11, or multiple air outlet holes 111 are arrayed along the axial direction of the air flow trap 11 to form a row of air outlet units, and then multiple air outlet units are arrayed around the axis of the air flow trap 11, that is, at this time, multiple uniformly distributed air outlet holes 111 are opened on the entire air flow trap 11 inserted into the aerosol formation matrix 5.

[0047] When the aperture of the air outlet holes 111 is 0.2 mm - 0.5 mm, in addition to the above-mentioned array layout, the multiple air outlet holes 111 can also be arranged in other layouts. For example, in other embodiments, a plurality of air outlet holes 111 are arranged in the circumferential direction of the air flow trap 11 to form a layer of air outlet circles. From the side far away from the heat exchange core 12 to the side close to the heat exchange core 12, the number of air outlet holes 111 on each layer of the air flow circle increases continuously.

[0048] When the aperture of the air outlet holes 111 is 0.6 mm - 0.8 mm, the aperture is relatively larger, allowing more hot air flow to pass through and not easily clogging. At this time, the number of air outlet holes 111 can be set relatively fewer. When the aperture of the air outlet holes 111 is 0.2 mm - 0.5 mm, it can provide hot air flow with a greater flow rate. Since the air outlet holes 111 are relatively smaller at this time, the number of air outlet holes 111 can be set relatively more. When the aperture of the air outlet holes 111 is 0.2 mm - 0.5 mm, it is easy to clog. However, since the number of air outlet holes 111 in this aperture range is large enough, even if an individual air outlet hole 111 is blocked, it does not affect the normal operation of the air flow trap 11. That is, for the air outlet holes 111 with an aperture of 0.2 mm - 0.5 mm, the clogging problem can be ignored. Based on the advantages of the air outlet holes 111 in different aperture ranges, in other embodiments, the air flow trap 11 can be provided with multiple air outlet holes 111 having multiple apertures. For example, the air flow trap 11 includes both air outlet holes 111 with an aperture of 0.6 mm - 0.8 mm and air outlet holes 111 with an aperture of 0.2 mm - 0.5 mm, and the air outlet holes 111 in the two aperture ranges are combined and arranged according to actual needs.

[0049] Please refer to Figures 1-4 , in the embodiment of the present application, the air flow trap 11 includes an air flow trapping main body 112 and a sleeve 113 that are connected and communicate with each other. A plurality of air outlet holes 111 are opened on the air flow trapping main body 112. The air flow trapping main body 112 is used to be inserted into the aerosol forming matrix 5. At this time, the porosity of the plurality of air outlet holes 111 on the air flow trapping main body 112 is 60% - 75%. The bottom of the sleeve 113 is connected to one end of the air flow trapping main body 112 close to the heat exchange core 12. The sleeve 113 is sleeved outside the heat exchange core 12, and an air flow transfer cavity B is formed between the end face of the sleeve 113 and the heat exchange core 12 facing the air flow trapping main body 112.

[0050] Specifically, for example, a retaining ring 122 is provided at one end of the heat exchange core 12 facing the air flow trapping main body 112. One end of the retaining ring 122 away from the heat exchange core 12 abuts against the bottom of the sleeve 113. In this way, the air flow transfer cavity B can be formed by the bottom of the sleeve 113, the retaining ring 122, and the end face of the heat exchange core 12 facing the air flow trapping main body 112. Through the air flow transfer cavity B, it is possible to prevent the air flow heated by the heat exchange core 12 from diffusing and flowing around, and to give a preliminary aggregation effect to the air flow heated by the heat exchange core 12, so that the air flow trapping main body 112 can quickly and fully aggregate the air flow heated by the heat exchange core 12.

[0051] Preferably, please refer to Figure 1 , to ensure the smoothness of the air flow in the air flow transfer cavity B, the connection part (i.e., the communication part) between the bottom of the sleeve 113 and the air flow trapping main body 112 is a curved surface gradient structure. The specific gradient structure is that from the side close to the heat exchange core 12 to the side away from the heat exchange core 12, the radial dimension of the connection part between the bottom of the sleeve 113 and the air flow trapping main body 112 continuously decreases.

[0052] In other embodiments, the heat exchange core 12 can also be a standard cylinder without designing the retaining ring 122, but a retaining edge is provided on the inner wall of the sleeve 113 close to the bottom of the sleeve 113, and the retaining edge abuts against the end face of the heat exchange core 12 to form the said air flow transfer cavity B. Or, in other embodiments, the air flow trap 11 only includes the air flow trapping main body 112 without setting the sleeve 113. At this time, a conical tube can be provided at one end of the heat exchange core 12 facing the air flow trapping main body 112. One end of the conical tube is connected to the heat exchange core 12, and the other end of the conical tube is connected to the end of the air flow trapping main body 112. The space inside the conical tube serves as the air flow transfer cavity B. Among them, the conical tube can be an integral structure with the heat exchange core 12 or an independent structure.

[0053] Please refer to Figures 1-4 , in the embodiment of the present application, the air flow trap 11 further includes a conical part 114, and the conical part 114 is fixed to one end of the air flow trapping main body 112 away from the heat exchange core 12. Among them, the air flow trapping main body 112 is tubular or cylindrical. If it is cylindrical, the bottom of the air flow trapping main body 112 is located on the side away from the heat exchange core 12. Through the conical part 114, it is convenient to insert the air flow trapping main body 112 into the aerosol forming matrix 5. After the air flow trapping main body 112 is inserted into the aerosol forming matrix 5, the air flow trapping main body 112 can be coaxially distributed with the aerosol forming matrix 5, that is, the air flow trapping main body 112 is inserted into the center of the aerosol forming matrix 5, which is convenient for uniformly heating each part in the radial direction of the aerosol forming matrix 5.

[0054] Please refer to Figures 1-2, in the radial direction of the sleeve 113, a fastener 13 is fixed between the heat exchange core 12 and the sleeve 113 to facilitate the fixed connection between the sleeve 113 and the heat exchange core 12. The fastener 13 can specifically be an annular structural member, which is tightly fitted between the sleeve 113 and the heat exchange core 12 to achieve the fixed connection between the sleeve 113 and the heat exchange core 12. Specifically, the fastener 13 can also be a colloidal substance, which is dropped into the space between the sleeve 113 and the heat exchange core 12 and is sintered to achieve the fixed connection between the sleeve 113 and the heat exchange core 12. In other embodiments, the fastener 13 may not be provided, and the sleeve 113 and the heat exchange core 12 are directly fitted and fixed.

[0055] Please refer to Figures 1-2 , in the embodiment of the present application, the heating structure 1 further includes a heating element 14, and the heating element 14 is fixed to the side wall of the heat exchange core 12, and the heating element 14 is used to heat the heat exchange core 12. And / or, the fastener 13 is a heat-insulating and insulating member.

[0056] In order to quickly conduct heat evenly and uniformly heat the air flow in the heat exchange holes 121, the heat exchange core 12 is made of a material with a relatively large thermal conductivity. For example, the heat exchange core 12 is made of insulating aluminum alloy. The air flow trap 11 is mainly used to insert into the aerosol formation matrix 5 and aggregate the air flow. Therefore, there is no limit to the thermal conductivity of the air flow trap 11, as long as it has a certain structural strength. For example, the material of the air flow trap 11 is 430 stainless steel. The fastener 13 is a heat-insulating and insulating member. On the one hand, insulation can prevent other structures from being electrically connected to the heating element 14, and on the other hand, heat insulation can make as much heat generated by the heating element 14 be transferred to the heat exchange core 12 to ensure the heating efficiency. Specifically, the fastener 13 is a ceramic ring or ceramic glue.

[0057] The heating element 14 can specifically be a resistance element with a large area such as a heating mesh or a heating sheet to facilitate ensuring the heating efficiency. At this time, after the heating element 14 is powered on, it can heat the heat exchange core 12, and the heated heat exchange core 12 then heats the air flow flowing into the heat exchange holes 121. In addition to the resistance heating method, the heating structure 1 can also adopt an electromagnetic heating method. For example, in other embodiments, the heating structure 1 does not include a heating element 14, but includes an electromagnetic coil. The electromagnetic coil is sleeved outside the heat exchange core 12, and the heat exchange core 12 is a magnetic material with a certain magnetic permeability. The electromagnetic coil and the heat exchange core 12 cooperate to heat the aerosol formation matrix 5 by hot air flow in an electromagnetic heating manner.

[0058] The aperture of the heat exchange core 12 is too small and is easily blocked by the fine particles falling from the aerosol forming substrate 5. If the aperture of the heat exchange core 12 is too large, the heating effect on the air flow in the heat exchange holes 121 cannot be guaranteed. Based on this, in the embodiment of the present application, the aperture of the heat exchange holes 121 is 0.3 mm - 0.6 mm. When the aperture of the heat exchange holes 121 is within this range, it is not easily blocked and can fully heat the air flow.

[0059] Please refer to Figures 6-7 , the heating structure 1 further includes a bracket storage body 15, a top cover 16 and a base 17. The bracket storage body 15 includes a storage cylinder 151 and a sleeve 152. The sleeve 152 is sleeved on the outside of the storage cylinder 151, and there are spaced distributions between the sleeve 152 and the storage cylinder 151. The storage cylinder 151 is used to accommodate the aerosol forming substrate 5. For the convenience of processing and assembly, the storage cylinder 151 and the sleeve 152 are of an integral structure. The top cover 16 is fixed to one end of the bracket storage body 15, and the base 17 is fixed to the other end of the bracket storage body 15. On the side of the base 17 facing the top cover 16, there is a support tube 171 placed inside the sleeve 152. There is a stop surface 1711 on the inner wall of the support tube 171. The bottom of the storage cylinder 151 is located on the side close to the base 17, and the mouth of the storage cylinder 151 is located on the side away from the base 17. A through hole is opened on the bottom of the storage cylinder 151. The stop surface 1711 divides the space inside the support tube 171 into a first chamber C close to the top cover 16 and a second chamber D away from the top cover 16. The sleeve 113 of the air flow collector 11 is placed in the first chamber C of the support tube 171 and abuts against the stop surface 1711. The air flow collecting main body 112 passes through the through hole and is placed inside the storage cylinder 151. It can be understood that the air flow collecting main body 112 is located at the center of the storage cylinder 151, so that the air flow collecting main body 112 can be inserted into the center of the aerosol forming substrate 5. At this time, the fastener 13, the heating element 14 and the heat exchange core 12 are already fixed inside the sleeve 113 in the support tube 171. A through hole 161 for the aerosol forming substrate 5 to pass through is formed on the top cover 16. Part of the aerosol forming substrate 5 passes through the through hole 161 and is placed inside the storage cylinder 151. The sleeve 152, the storage cylinder 151, the top cover 16 and the base 17 enclose an annular chamber E. A first air inlet hole 162 communicating with the annular chamber E is opened on the top cover 16. A second air inlet hole 1712 is opened on the support tube 171 at the second chamber D. The second air inlet hole 1712 is respectively connected to the first air inlet hole 162 and the heat exchange holes 121. When the user inhales the aerosol forming substrate 5, the outside air flow sequentially passes through the first air inlet hole 162, the annular chamber E, the second air inlet hole 1712, the second chamber D, the heat exchange holes 121, the air flow transfer chamber B, the air flow collection chamber A, and flows into the aerosol forming substrate 5. At this time, the air inlet mode of the heating structure 1 is side wall air inlet. In other embodiments, it can also be axial air inlet. In the embodiment of the present application, the air inlet mode is not limited.

[0060] By adopting the heating structure 1 in the above-mentioned embodiment designed in the present application, the air flow flowing into the heat exchange holes 121 is heated by the heat exchange core 12 to generate hot air flow. The air flow collector 11 aggregates the hot air flow. The air flow collector 11 is inserted into the aerosol-forming substrate 5. As the user sucks on the aerosol-forming substrate 5, the hot air flow in the air flow collection chamber A can be diverted into the aerosol-forming substrate 5. The aggregated hot air flow flows from the air outlet into the aerosol-forming substrate 5, which can enhance the heat exchange effect between the hot air flow and the aerosol-forming substrate 5 and improve the thermal efficiency. The designed heating structure 1 does not require circumferential heating as an auxiliary, and only the hot air flow flowing into the aerosol-forming substrate 5 can sufficiently heat the aerosol-forming substrate 5. Therefore, there will be no problem of burnt smell caused by circumferential heating, and the sucking experience can be improved.

[0061] Please refer to Figures 8-9 , in another embodiment of the present application, a heat-not-burn atomizer is provided, which includes a power source 2, a control board 3, a housing 4, and the heating structure 1 in the above-mentioned embodiment. The power source 2 is used to supply electrical energy to the heating structure 1, and the control board 3 is used to control the working state of the heating structure 1. The heating structure 1, the power source 2, and the control board 3 are all arranged in the housing 4. The heat-not-burn atomizer has the heating structure 1 in the above-mentioned embodiment, so it also has the advantages of the heating structure 1 in the above-mentioned embodiment, which will not be elaborated here.

[0062] The above uses specific examples to elaborate on the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the technical field to which the present application pertains, based on the idea of the present application, several simple deductions, deformations, or substitutions can also be made.

Claims

1. A heating structure, characterized in that, Comprising: A heat exchange core, on which a plurality of heat exchange holes are formed, and the heat exchange core is used for heating the air flow flowing into the heat exchange holes; and An air flow trap, in which an air flow trapping cavity is provided, a plurality of air outlet holes are formed on the side wall of the air flow trap, and an air flow transfer cavity is provided between the air flow trap and the heat exchange core, and the heated air flow can flow to the air flow transfer cavity; The air flow trap is used for being inserted into an aerosol forming substrate, and the air flow trap is further used for gathering the air flow in the air flow transfer cavity into the air flow trapping cavity, and the air flow in the air flow trapping cavity flows into the aerosol forming substrate through the air outlet holes.

2. The heating structure according to claim 1, characterized in that, The aperture of the air outlet holes is 0.2 mm - 0.8 mm.

3. The heating structure according to claim 1, characterized in that, Along the axial direction of the air flow trap, at least a first trapping tube and a second trapping tube are formed on the air flow trap, the first trapping tube is located on the side away from the heat exchange core, and the second trapping tube is located on the side close to the heat exchange core; the air outlet holes are formed on both the first trapping tube and the second trapping tube, and the total air outlet volume of the first trapping tube is less than the total air outlet volume of the second trapping tube.

4. The heating structure according to claim 1, wherein, The aperture of the air outlet holes is 0.2 mm - 0.5 mm, and the porosity of the plurality of air outlet holes on the air flow trap is 60% - 75%.

5. The heating structure according to claim 4, wherein The plurality of air outlet holes are arrayed around the axis of the air flow trap to form an air outlet circle, and a plurality of the air outlet circles are arrayed along the axial direction of the air flow trap.

6. The heating structure according to claim 1, wherein The air flow trap includes an air flow trapping main body and a sleeve which are communicated; a plurality of the air outlet holes are formed on the air flow trapping main body, and the air flow trapping main body is used for being inserted into the aerosol forming substrate; the bottom of the sleeve is connected to one end of the air flow trapping main body close to the heat exchange core, the sleeve is sleeved outside the heat exchange core, and the air flow transfer cavity is formed between the sleeve and one end surface of the heat exchange core facing the air flow trapping main body.

7. The heating structure according to claim 6, characterized in that, In the radial direction of the sleeve, a fastener is fixed between the heat exchange core and the sleeve.

8. The heating structure according to claim 7, characterized in that, It further includes a heating element, the heating element is fixed on the side wall of the heat exchange core, and the heating element is used for heating the heat exchange core; and / or, the fastener is a heat-insulating and insulating component.

9. The heating structure according to claim 6, wherein, The air flow trap further includes a conical part, and the conical part is fixed to one end of the air flow trapping main body away from the heat exchange core.

10. A heat-not-burn atomizer, characterized in that, Including a power supply, a control board and a heating structure according to any one of claims 1 to 9, the power supply is used for supplying electric energy to the heating structure, and the control board is used for controlling the working state of the heating structure.

Images