Atomization heating structure and aerosol generating device

Abstract

The utility model provides an atomization heating structure and an aerosol generating device.The atomization heating structure comprises a heat conduction pipe and a heating element, the heat conduction pipe is provided with a first end and a second end, the heat conduction pipe is further provided with a heat conduction cavity, the first end is used for allowing an aerosol forming substrate to be inserted into and stretch into the heat conduction cavity, and the second end is used for allowing the aerosol forming substrate to stretch into the heat conduction cavity; a plurality of heat resistance hole groups are formed in the peripheral side of the first end of the heat conduction pipe and are distributed in the direction parallel to the first end to the second end; the heating body is arranged at the second end and used for heating air to form hot air flow to heat the aerosol-forming substrate. As the heating body is arranged at the second end and is provided with the transfer path for transferring heat from the second end to the first end, the heat resistance hole groups are arranged at the first end, so that the transfer path for transferring heat on the heat conduction pipe from the second end to the first end can be broken, and the heat transferred from the heat conduction pipe to the first end is blocked or slowed down to be continuously transferred to the first end; therefore, the temperature of the first end of the heat conduction pipe is reduced.

Description

Technical Field

[0001] The present application relates to the field of aerosol technology, and more specifically to an atomization heating structure and an aerosol generating device. Background Art

[0002] The aerosol generating device in the current heat-not-burn device usually includes a power supply component and a heating mechanism. The power supply component and the heating mechanism are electrically connected, and the power supply component is used to provide electrical energy to the heating mechanism, and the heating mechanism finally converts the electrical energy provided by the power supply component into thermal energy, thereby heating the aerosol-forming matrix on the heating mechanism, so that the aerosol-forming matrix is ​​atomized by the heat-not-burn method to form an aerosol that can be inhaled by the user.

[0003] The existing heating mechanism usually includes a heat pipe, a heating element and a connecting component. The heating element is generally connected to the heat pipe, and heat is transferred to the aerosol-forming matrix through the heat pipe. The connecting component is arranged on the outside of the heat pipe, and the connection with the outer shell of the aerosol generating device is achieved through the connecting component. However, when the heat pipe is connected to the connecting component, the temperature of the heat pipe is too high, causing the connecting component to be melted, making the connecting component invalid, thereby affecting the service life of the atomization equipment. Utility Model Content

[0004] The present application provides an atomization heating structure and an aerosol generating device, which can reduce the temperature at the connection point between a heat conducting pipe and a connecting component.

[0005] The present application provides an atomization heating structure, comprising:

[0006] A heat-conducting pipe, the heat-conducting pipe having a first end and a second end, the heat-conducting pipe further having a heat-conducting cavity, the first end being used for inserting an aerosol-forming matrix and extending into the heat-conducting cavity, a plurality of heat-resistance hole groups being arranged around the first end of the heat-conducting pipe, and the plurality of heat-resistance hole groups being arranged in a direction parallel to the first end to the second end;

[0007] and a heating element, wherein the heating element is disposed at the second end and is used for heating air to form a hot air flow to heat the aerosol-forming substrate.

[0008] In one embodiment, each of the heat-resistance hole groups includes a plurality of heat-resistance holes, and the heat-resistance holes are arranged through the side wall of the heat-conducting tube. The heat-resistance holes of two adjacent heat-resistance hole groups are staggered along a direction parallel to the direction from the first end to the second end.

[0009] In one embodiment, each of the heat-resistance hole groups further includes a sealing member, and the sealing member has the same structure as the heat-resistance hole.

[0010] In one embodiment, the thermal conductivity of the seal is less than 3w / m·g.

[0011] In one embodiment, the sealing member is a glass glaze sealing member, and the sealing member and the heat-resistant hole are sintered into an integral structure.

[0012] In one embodiment, the diameter of the heat-resistant hole ranges from 0.2 mm to 0.4 mm.

[0013] In one embodiment, the heating element includes a heat exchange core and a heating net, and the heating net is arranged on the outer side wall of the heat exchange core.

[0014] In one embodiment, a support member is further included, wherein the support member has a accommodating cavity, the heat-conducting tube is arranged in the accommodating cavity, the aerosol-forming matrix is ​​inserted into the accommodating cavity from one end of the support member, and at least a partial structure of the aerosol-forming matrix is ​​inserted from the first end of the heat-conducting tube and extends into the heat-conducting cavity.

[0015] In one embodiment, a first connecting member is provided on the outer side of the first end, and a second connecting member is provided on the inner wall of the accommodating cavity. The first connecting member and the second connecting member cooperate to achieve connection between the heat conducting pipe and the supporting member.

[0016] The present application provides an aerosol generating device, comprising the atomization and heating structure as described above.

[0017] According to the atomization heating structure in the above embodiment, it includes a heat-conducting pipe and a heating element. The heat-conducting pipe has a first end and a second end. A plurality of heat-resisting hole groups are arranged on the circumferential side of the first end of the heat-conducting pipe. The plurality of heat-resisting hole groups are arranged in a direction parallel to the first end to the second end. Since the heating element is arranged at the second end, there is a heat transfer path from the second end to the first end. By arranging a plurality of heat-resisting hole groups at the first end, the heat transfer path of the heat-conducting pipe from the second end to the first end can be interrupted, and the heat transferred from the heat-conducting pipe to the first end can be blocked or slowed down to continue to be transferred to the first end, so as to achieve the purpose of lowering the temperature of the first end of the heat-conducting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of an atomization heating structure in an embodiment;

[0019] Figure 2 It is a structural explosion diagram of an atomization heating structure in an embodiment;

[0020] Figure 3 A structural cross-sectional view of an atomizing heating structure in an embodiment;

[0021] Figure 4 A schematic diagram of the structure of a heat pipe in an embodiment;

[0022] Figure 5 It is a schematic diagram of the structure of a heating element in an embodiment.

[0023] Among them: 100, heat pipe; 110, first end; 120, second end; 130, heat conduction cavity; 140, heat resistance hole group; 141, heat resistance hole; 142, first heat resistance hole group; 143, second heat resistance hole group; 144, sealing member; 150, first connecting member; 200, heating element; 210, heat exchange core; 211, heat exchange hole; 220, heating net; 300, aerosol forming matrix; 400, supporting member; 410, accommodating cavity; 420, second connecting member; 500, base. DETAILED DESCRIPTION

[0024] 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.

[0025] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0026] 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).

[0027] The existing aerosol generating device heats the aerosol-forming matrix through a heating mechanism to atomize it and generate an aerosol for the user to use. In order to facilitate the fixation of the heating mechanism and the aerosol-forming matrix, a connecting component is generally provided. However, in the aerosol generating device, high-temperature heating often occurs during use. Materials such as silicon and rubber that are commonly used as connecting components have low thermal resistance, and therefore the shape may be deformed at high temperatures. In this case, the connection force and sealing force between the heating mechanism and the aerosol-forming matrix may deteriorate, and gas leakage accidents are prone to occur. In order to solve this technical problem, the existing solution uses a connector made of PEEK material. However, with the change of atomization requirements, the temperature generated by the heating mechanism is as high as 300°C and above, reaching the melting point temperature of the PEEK material, which causes the part where the connector made of PEEK is connected to the heating mechanism to fail easily due to high temperature, and its supporting and fixing function cannot be achieved. In order to solve this technical problem, the present application provides the following technical solution content.

[0028] refer to Figure 1-5 The present application provides an atomization heating structure, including a heat pipe 100 and a heating element 200. The heat pipe 100 has a first end 110 and a second end 120. The heat pipe 100 also has a heat conduction cavity 130. The first end 110 is used for inserting an aerosol-forming matrix 300 and extending into the heat conduction cavity 130. A plurality of heat-resistance hole groups 140 are provided on the peripheral side of the first end 110 of the heat pipe 100. The plurality of heat-resistance hole groups 140 are arranged in a direction parallel to the first end 110 to the second end 120. The heating element 200 is arranged at the second end 120 to heat air to form a hot air flow to heat the aerosol-forming matrix 300.

[0029] refer to Figure 5 The heating element 200 includes a heat exchange core 210 and a heating net 220. The heating net 220 is arranged on the outer wall of the heat exchange core 210, and the heating net 220 is sintered on the outer side of the heat exchange core 210 by ceramic glue, and is fixed to the heat exchange core 210 as an integrated structure. A plurality of heat exchange holes 211 are provided on the heat exchange core 210. After working, the heating net 220 generates heat and transfers heat to the heat exchange core 210. The air flowing along the heat exchange holes 211 is heated to become a hot air flow, and the aerosol forming matrix 300 is heated by the hot air flow along its axial direction, so that the aerosol forming matrix 300 is atomized to form an aerosol, which can be used by the user. Preferably, the heating net 220 is arranged between the outer wall of the heat exchange core 210 and the inner wall of the heat pipe 100. The heat energy generated by the heating net 220 can be transferred to the heat exchange core 210 more effectively. The heat exchange core 210 fully transfers the heat energy to the passing air, which can avoid heat loss. The heat conducted from the heating net 220 to the heat pipe 100 is blocked at the heat resistance hole group 140.

[0030] During operation, the heating network 220 heats the heat exchange core 210, and heat is also transferred from the second end 120 to the first end 110 along the heat pipe 100. The present application creatively arranges multiple heat-resisting hole groups 140 to interrupt the transfer path of heat on the heat pipe 100 from the second end 120 to the first end 110, and blocks or slows down the heat transferred from the heat pipe 100 to continue to transfer to the first end 110, so as to achieve the purpose of reducing the temperature of the first end 110 of the heat pipe 100.

[0031] In one embodiment, according to the requirements of atomization of the aerosol-forming matrix 300, the temperature of the heat exchange core 210 can reach 350°C within 8 seconds. At this time, the temperature of the heating network 220 is as high as 400°C. This part of the heat will not only heat the air in the heat exchange hole 211 to form a hot air flow to heat the aerosol-forming matrix 300, but also be transferred along the second end 120 of the heat pipe 100 to the first end 110. Through the setting of the heat-resistant hole 141, the temperature of the first end 110 of the heat pipe 100 is reduced to 108°C, which is significantly lower than 300°C, that is, lower than the melting point temperature of the existing connecting components, thereby avoiding failure of the connecting components and improving the connection force and sealing between the aerosol-forming matrix 300, the heating structure and the connecting components.

[0032] refer to Figure 4 Each heat-resistance hole group 140 includes a plurality of heat-resistance holes 141, and the heat-resistance holes 141 are arranged to penetrate the side wall of the heat-conducting pipe 100. The plurality of heat-resistance holes 141 in each heat-resistance hole group 140 are arranged to surround the side wall of the heat-conducting pipe 100. The heat-resistance holes 141 of two adjacent heat-resistance hole groups 140 are staggered along a direction parallel to the direction from the first end 110 to the second end 120. By staggering the heat-resistance holes 141, it is possible to maximize the blocking of heat transfer on the basis of simplifying the structure and the preparation process, thereby achieving the purpose of reducing the temperature of the first end 110 of the heat-conducting pipe 100.

[0033] The heat-resistance hole group 140 can be arranged in two groups, three groups or any number of groups above according to design requirements. For example, when the heat-resistance hole group 140 is arranged in two groups, it includes a first heat-resistance hole group 142 and a second heat-resistance hole group 143. The first heat-resistance hole group 142 and the second heat-resistance hole group 143 are arranged along a direction parallel to the direction from the first end 110 to the second end 120 (arranged along the heat transfer path), and are staggered so that along a plane perpendicular to the arrangement direction, a heat-resistance hole 141 in the second heat-resistance hole group 143 is provided between each two heat-resistance holes 141 in the first heat-resistance hole group 142, so that in the direction of heat transfer, there is always a heat-resistance hole 141 that can cut off its heat transfer path. While being able to achieve temperature reduction, the structure of the heat pipe 100 is simplified to the maximum extent.

[0034] Of course, in other embodiments, when three or more heat-resistance hole groups 140 are arranged, at least one heat-resistance hole 141 needs to be provided along the direction of heat transfer to cut off the heat transfer path.

[0035] Due to the setting of the heat-resistant holes 141, there is a risk of gas leakage on the heat-conducting pipe 100. In order to avoid this situation, each heat-resistant hole group 140 also includes a seal 144. The seal 144 has the same structure as the heat-resistant hole 141. The seal 144 can be completely filled in the heat-resistant hole 141, thereby ensuring the sealing performance.

[0036] Generally, in order to ensure the effectiveness of heat transfer, improve energy utilization, and reduce energy loss during the transfer process, the heat pipe 100 is generally made of metal or metal alloy (such as aluminum oxide or aluminum nitride) with a thermal conductivity of up to 300w / m·g, or it can also be made of ceramic materials with a thermal conductivity that can meet the above requirements. The heat-resistant hole 141 is set to block heat transfer and reduce heat transfer. The thermal conductivity of the seal 144 is less than 3w / m·g, which is almost equivalent to the absence of heat transfer. The setting of the seal 144 will not affect the function of the heat-resistant hole 141 and can also meet the sealing requirements.

[0037] The sealing member 144 is constructed as a glass glaze sealing member 144 , which is formed by filling the glass glaze in the heat-resistance hole 141 , and then sintering the glass glaze sealing member 144 and the heat-resistance hole 141 into an integrated structure.

[0038] Since the glass glaze is generally in liquid state, in order to achieve the effect of heat blocking and also to meet the construction operation of the seal 144, the aperture of the heat-resisting hole 141 is in the range of 0.2 mm to 0.4 mm. According to the size of the existing heat-conducting pipe 100, each heat-resisting hole group 140 generally includes 20 heat-resisting holes 141. Of course, the number of heat-resisting holes 141 can also be adjusted according to the size of the heat-conducting pipe 100, the aperture of the heat-resisting hole 141, and the number of heat-resisting hole groups 140.

[0039] In one embodiment, an aerosol-forming substrate 300 is further included, and the aerosol-forming substrate 300 is inserted into the heat-conducting cavity 130 from the first end 110. The distance between the side of the aerosol-forming substrate 300 close to the second end 120 and the side of the heat-resisting hole group 140 close to the second end 120 is 4.5 mm-8 mm. By setting this distance, a specific sufficient heat exchange distance between the aerosol-forming substrate 300 and the heating element 200 can be ensured, thereby ensuring the atomization requirement of the aerosol-forming substrate 300. In this distance, the hot air flow in the heat exchange holes 211 in the heating element 200 heats the aerosol-forming substrate 300 along the axial direction thereof, and the heat-conducting tube 100 can also heat the aerosol-forming substrate 300 from the circumference to the center along the radial direction thereof.

[0040] In one embodiment, the aerosol-forming matrix 300 is inserted into the heat-conducting cavity 130 from the first end 110 and contacts the heating element 200 , and the distance between the contact point between the aerosol-forming matrix 300 and the heating element 200 and the side of the heat-resisting hole group 140 close to the second end 120 is 4.5 mm-8 mm.

[0041] In one embodiment, the distance between the side of the aerosol-forming substrate 300 close to the second end 120 and the side of the thermal-resistance aperture group 140 close to the second end 120 is 5 mm.

[0042] It should be further explained that the side of the above-mentioned heat-resistant hole group 140 close to the second end 120 can be regarded as a whole, referring to the side of the whole close to the second end 120, or it can be the side of the heat-resistant hole group 140 close to the second end 120 among all the heat-resistant hole groups 140.

[0043] refer to Figure 2 and 3 , further comprising a support member 400, wherein the support member 400 has a receiving cavity 410, wherein the heat conducting tube 100 is disposed in the receiving cavity 410, wherein the aerosol-forming substrate 300 is inserted into the receiving cavity 410 from one end of the support member 400, and wherein at least a portion of the structure of the aerosol-forming substrate 300 is inserted into the receiving cavity 410 from the first end 110 of the heat conducting tube 100 and extends into the heat conducting cavity 130. The support member 400 may be made of PEEK material.

[0044] In order to improve the stability of the connection between the support member 400 and the heat conducting pipe 100, a first connecting member 150 is provided on the outer side of the first end 110 of the heat conducting pipe 100, and a second connecting member 420 is provided on the inner wall of the accommodating cavity 410. The first connecting member 150 and the second connecting member 420 cooperate to realize the connection between the heat conducting pipe 100 and the support member 400. One of the first connecting member 150 and the second connecting member 420 is a protruding structure, and the other is a groove structure matching the protruding structure.

[0045] refer to Figure 3 The first connecting member 150 is a protruding structure formed on the outer side of the first end 110 of the heat conducting pipe 100 , and the second connecting member 420 is a groove structure formed on the inner wall of the accommodating cavity 410 .

[0046] Furthermore, the support member 400 is a structure with two ends open, one end is for inserting the aerosol-forming matrix 300, and the other end is provided with a base 500, and the base 500 is used to connect the support member 400 with other structures or to close the support member 400.

[0047] The present application also provides an aerosol generating device, which includes a power supply, a control circuit board, a housing, and the above-mentioned atomizing heating structure. The power supply, the control circuit board, and the atomizing heating structure are all located in the housing, and part of the structure of the housing is recessed to form an installation space, and the atomizing heating structure is installed in the installation space. The power supply is electrically connected to the heating network 220 in the atomizing heating structure, and the control circuit board is used to control the heating power of the atomizing heating structure to ensure the atomizing heating effect of the aerosol-forming matrix 300.

[0048] Of course, in some embodiments, the power supply and the control circuit board are located in the shell, the base 500 in the atomization heating structure is connected to the shell, the power supply is electrically connected to the heating network 220 to provide it with working power, and a mounting hole is provided on the base 500 to facilitate the power supply line to pass through and be electrically connected to the heating network 220. The control circuit board is used to control the heating power of the atomization heating structure to ensure the atomization heating effect on the aerosol forming matrix 300.

[0049] The power supply, control circuit board, casing, etc. are not the focus of this application, so they are not shown in the figure and will not be elaborated in detail.

[0050] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An atomizing heating structure, characterized in that: include: A heat-conducting pipe, the heat-conducting pipe having a first end and a second end, the heat-conducting pipe further having a heat-conducting cavity, the first end being used for inserting an aerosol-forming matrix and extending into the heat-conducting cavity, a plurality of heat-resistance hole groups being arranged around the first end of the heat-conducting pipe, and the plurality of heat-resistance hole groups being arranged in a direction parallel to the first end to the second end; and a heating element, wherein the heating element is disposed at the second end and is used for heating air to form a hot air flow to heat the aerosol-forming substrate.

2. The atomizing heating structure according to claim 1, characterized in that: Each of the heat-resistance hole groups includes a plurality of heat-resistance holes, and the heat-resistance holes are arranged through the side wall of the heat-conducting pipe. The heat-resistance holes of two adjacent heat-resistance hole groups are staggered along a direction parallel to the direction from the first end to the second end.

3. The atomizing heating structure according to claim 2, characterized in that: Each of the heat-resistance hole groups further includes a sealing member, and the sealing member has the same structure as the heat-resistance hole.

4. The atomizing heating structure according to claim 3, characterized in that: The thermal conductivity of the sealing member is less than 3w / m·g.

5. An atomizing heating structure according to claim 3 or 4, characterized in that: The sealing member is a glass glaze sealing member, and the sealing member and the heat-resisting hole are sintered into an integral structure.

6. The atomizing heating structure according to claim 2, characterized in that: The diameter of the heat-resistance hole ranges from 0.2 mm to 0.4 mm.

7. The atomizing heating structure according to claim 1, characterized in that: The heating element comprises a heat exchange core and a heating net, and the heating net is arranged on the outer side wall of the heat exchange core.

8. The atomizing heating structure according to claim 1, characterized in that: It also includes a support member, which has a accommodating cavity, the heat-conducting tube is arranged in the accommodating cavity, the aerosol-forming matrix is ​​inserted into the accommodating cavity from one end of the support member, and at least a part of the structure of the aerosol-forming matrix is ​​inserted from the first end of the heat-conducting tube and extends into the heat-conducting cavity.

9. The atomizing heating structure according to claim 8, characterized in that: A first connecting piece is disposed on the outer side of the first end, and a second connecting piece is disposed on the inner wall of the accommodating cavity. The first connecting piece cooperates with the second connecting piece to realize the connection between the heat conducting pipe and the supporting piece.

10. An aerosol generating device, characterized in that: It comprises the atomizing and heating structure as described in any one of claims 1 to 9.

Images