Atomization assembly and heating non-combustion appliance

Abstract

The atomization assembly comprises a heating pipe and a connecting piece, and the heating pipe is provided with a containing cavity used for containing an aerosol generating substrate; the connecting piece is arranged at at least one end of the heating pipe in the axial direction of the heating pipe, the connecting piece is provided with an airflow channel and a mounting groove, the axial end of the heating pipe is located in the mounting groove, and the airflow channel is communicated with the containing cavity through the mounting groove; the heating pipe is welded with the connecting piece, a welding seam is formed between the peripheral surface of the heating pipe and the groove side wall of the mounting groove, and the heating pipe and the connecting piece are sealed at the welding seam; on one hand, the connecting strength and the connecting structure stability of the heating pipe and the connecting piece can be improved, the service life of the atomization assembly and the whole heating non-combustion appliance can be prolonged, and on the other hand, the heating pipe and the connecting piece are sealed through the welding seam, so that the sealing performance between the heating pipe and the connecting piece can be ensured; the hot air flow and the aerosol can be prevented from leaking from the connecting position of the heating pipe and the connecting piece, and the use experience of a user can be ensured.

Description

Technical Field

[0001] The present application relates to the technical field of heat without burning, and in particular to an atomization assembly and a heat without burning device. Background Art

[0002] Heat-not-burn appliances generally heat an aerosol-generating substrate by a heat-not-burn method, causing the aerosol-generating substrate to generate an aerosol for use by users.

[0003] In the related art, the heat-not-burn device includes an atomization component, in which a gas channel is formed. The atomization component includes a heating tube and a connecting cylinder located at the axial end of the heating tube, and the heating tube is connected to the gas channel through the connecting cylinder. The heating tube is generally sealed with the connecting cylinder by a seal, and the seal is generally a rubber part. The seal will age after long-term use in a high-temperature environment, and the high-temperature airflow and aerosol are easy to overflow from the sealing position, affecting the user's experience and reducing the service life of the entire heat-not-burn device. Utility Model Content

[0004] The present application provides an atomization assembly and a heat-without-combustion device to solve the technical problem that the aging of the seal at the connection position between the heating tube and the connecting cylinder affects the user experience and reduces the service life of the heat-without-combustion device.

[0005] According to the first aspect, an embodiment provides an atomization assembly, comprising:

[0006] A heating tube having a receiving cavity for receiving an aerosol generating substrate;

[0007] A connecting piece is arranged at at least one end of the heating tube in the axial direction of the heating tube, the connecting piece has an air flow channel and a mounting groove, the axial end of the heating tube is located in the mounting groove, and the air flow channel is connected with the accommodating cavity through the mounting groove; the heating tube is welded to the connecting piece, a welding seam is provided between the outer peripheral surface of the heating tube and the groove side wall of the mounting groove, and the heating tube and the connecting piece are welded and sealed at the welding seam.

[0008] In an optional embodiment, in the radial direction of the heating tube, the groove side wall of the installation groove has an annular protrusion arranged toward the heating tube; in the axial direction of the heating tube, the size of the annular protrusion is smaller than the size of the groove side wall of the installation groove, and the welding seam is located at the annular protrusion in the axial direction of the heating tube.

[0009] In an optional embodiment, in the axial direction of the heating tube, the annular protrusion is located between the notch of the mounting groove and the bottom wall of the groove.

[0010] In an optional embodiment, the heating tube and the connecting piece are connected by at least one of ultrasonic welding, friction welding or laser welding.

[0011] In an optional embodiment, the connecting member includes a first connecting tube and a second connecting tube, the mounting groove includes a first mounting groove located on the first connecting tube and a second mounting groove located on the second connecting tube, and the heating tube is located between the first connecting tube and the second connecting tube in its axial direction; the air flow channel includes an air inlet channel located in the first connecting tube and an air outlet channel located in the second connecting tube, and the air inlet channel is connected to the air outlet channel through the heating tube; the welding seam includes a first welding seam located at the groove side wall of the first mounting groove and a second welding seam located at the groove side wall of the second mounting groove.

[0012] In an optional embodiment, the connecting member includes an insulating tube, which is located outside the heating tube in the radial direction of the heating tube, and the insulating tube connects the first connecting tube and the second connecting tube. The insulating tube, the first connecting tube, the second connecting tube and the heating tube together form an insulating cavity.

[0013] In an optional embodiment, the thermal insulation tube and the second connecting tube are integrally formed, the thermal insulation tube and the first connecting tube are welded, a connecting weld is provided between the thermal insulation tube and the first connecting tube, and the first connecting tube and the thermal insulation tube are welded and sealed at the connecting weld.

[0014] In an optional embodiment, in the radial direction of the heating tube, the first connecting tube has a connecting outer peripheral surface connected to the inner peripheral surface of the insulating tube, and the connecting outer peripheral surface has an annular protrusion arranged toward the insulating tube; in the axial direction of the heating tube, the size of the annular protrusion is smaller than the size of the connecting outer peripheral surface, and the connecting weld is located at the annular protrusion in the axial direction of the heating tube.

[0015] In an optional embodiment, the connecting member includes a first connecting tube, the air flow channel includes an air inlet channel located in the first connecting tube, and the mounting groove includes a first mounting groove provided in the first connecting tube;

[0016] The atomization assembly includes a heat exchange core, the heating tube has a heat exchange cavity, the heat exchange cavity and the accommodating cavity are arranged in the axial direction of the heating tube, the heat exchange cavity connects the air inlet channel and the accommodating cavity, the heat exchange core has a heat exchange part and an outer flange, the heat exchange part is located in the heat exchange cavity, and the outer flange is clamped between the bottom wall of the first mounting groove and the heating tube in the axial direction of the heating tube.

[0017] According to the second aspect, an embodiment provides a heating without burning device, comprising a shell and an atomization assembly as described above, wherein the atomization assembly is installed in the shell, and the shell has an air inlet and an air outlet connected to the air flow channel.

[0018] According to the atomizer assembly and the heat-not-burn device of the above-mentioned embodiment, the atomizer assembly includes a heating tube and a connector, the heating tube has a receiving cavity for receiving an aerosol-generating substrate; the connector is arranged at at least one end of the heating tube in the axial direction of the heating tube, the connector has an airflow channel and a mounting groove, the axial end of the heating tube is located in the mounting groove, and the airflow channel is connected to the receiving cavity through the mounting groove; the heating tube is welded to the connector, and a welding seam is provided between the outer peripheral surface of the heating tube and the groove side wall of the mounting groove, and the heating tube and the connector are welded and sealed at the welding seam; since the airflow channel of the connector is connected to the receiving cavity through the mounting groove, the airflow channel of the connector is connected to the receiving cavity through the mounting groove. The cavity is connected, the axial end of the heating tube is located in the installation groove, and a welding seam is provided between the outer peripheral surface of the heating tube and the groove side wall of the installation groove, and the heating tube and the connecting piece are welded and sealed at the welding seam. This can increase the connection strength and the stability of the connection structure between the heating tube and the connecting piece on the one hand, and help to increase the service life of the atomization component and the entire heating non-combustion device. On the other hand, the sealing of the heating tube and the connecting piece through the welding seam helps to ensure the sealing performance between the heating tube and the connecting piece, and can prevent the leakage of hot air flow and aerosol from the connection position between the heating tube and the connecting piece, and help to ensure the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a heat-not-burn device in accordance with an embodiment after being matched with an aerosol generating substrate;

[0020] Figure 2 The figure is a schematic diagram of the internal structure of a heat-not-burn device after being combined with an aerosol-generating substrate in one embodiment.

[0021] In the figure: 1. heating tube; 11. accommodating chamber; 12. heat exchange chamber; 21. first connecting tube; 22. outer convex part; 221. connecting outer peripheral surface; 23. annular protrusion; 24. first mounting groove; 241. first annular protrusion; 25. air inlet channel; 31. second connecting tube; 32. cylinder body; 33. connecting section; 34. second mounting groove; 341. second annular protrusion; 35. air outlet channel; 41. insulation tube; 51. insulation chamber; 6. heat exchange core; 61. heat exchange part; 611. heat exchange air duct; 62. outer flange; 7. guide piece; 71. guide air duct; 81. outer shell; 82. skeleton; 83. positioning ring; 84. air inlet joint; 85. sealing joint; 86. clamping silica gel; 9. aerosol generating matrix. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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).

[0025] The atomization assembly disclosed in the embodiment of the present application is mainly used in heat-not-burn appliances, and is used to heat the aerosol generating substrate 9 and provide an airflow channel, so that the aerosol generating substrate 9 generates aerosol and is discharged along the airflow channel.

[0026] The atomization assembly of the embodiment of the present application includes a heating tube 1 and a connecting piece. The heating tube 1 has a accommodating cavity 11 for accommodating an aerosol generating matrix 9. The connecting piece is arranged at at least one end of the heating tube 1 in the axial direction of the heating tube 1. The connecting piece has an airflow channel and a mounting groove. The axial end of the heating tube 1 is located in the mounting groove, and the airflow channel is connected to the accommodating cavity 11 through the mounting groove. The heating tube 1 is welded to the connecting piece, and a welding seam is provided between the outer peripheral surface of the heating tube 1 and the side wall of the mounting groove. The heating tube 1 and the connecting piece are welded and sealed at the welding seam.

[0027] In this way, on the one hand, the strength and stability of the connection structure between the heating tube 1 and the connecting piece can be increased by welding the heating tube 1 and the connecting piece, so as to improve the life of the atomization assembly and the entire heating without burning device; on the other hand, the sealing of the heating tube 1 and the connecting piece can be achieved through the welding seam between the heating tube 1 and the connecting piece, thereby ensuring the sealing performance between the connecting piece and the heating tube 1, avoiding the use of sealing pieces, helping to reduce the number of parts of the entire atomization assembly, avoiding the leakage of hot air flow or aerosol between the heating tube 1 and the connecting piece due to aging of the sealing pieces, helping to ensure the user experience, and further improving the life of the atomization assembly and the entire heating without burning device.

[0028] Please refer to Figure 2 In one embodiment, the heating tube 1 in the atomizer assembly is a circular tube structure, and the heating tube 1 is provided with a first end and a second end arranged in the axial direction thereof, and the connecting member includes a first connecting tube 21 and a second connecting tube 31 located at both ends of the heating tube 1 in the axial direction of the heating tube 1, and the air flow channel includes an air inlet channel 25 formed by the first connecting tube 21 and an air outlet channel 35 formed by the second connecting tube 31, and the channel cross-sections of the air inlet channel 25 and the air outlet channel 35 can both be circular, and the first connecting tube 21, the second connecting tube 31 and the heating tube 1 are coaxially arranged. The mounting groove for mounting the axial end of the heating tube 1 includes a first mounting groove 24 and a second mounting groove 34. The first mounting groove 24 is located on the first connecting tube 21, and the first mounting groove 24 is communicated with the air inlet channel 25 in the first connecting tube 21. The notch of the first mounting groove 24 faces the heating tube 1 in the axial direction of the heating tube 1, so that the first end of the heating tube 1 can be inserted into the first mounting groove 24; the second mounting groove 34 is located on the second connecting tube 31, and the second mounting groove 34 is communicated with the air outlet channel 35 in the second connecting tube 31. The slot openings of the second mounting grooves 34 face the heating tube 1 in the axial direction of the heating tube 1, so that the second end of the heating tube 1 can be inserted into the second mounting groove 34; in this way, the air inlet channel 25 is connected to the air outlet channel 35 through the first mounting groove 24, the heating tube 1 and the second mounting groove 34 in sequence, so that it is convenient for the airflow to flow through the heating tube 1 from the air inlet channel 25 and transfer the heat to the aerosol generating matrix 9 in the accommodating chamber 11 after being heated. After the aerosol generating matrix 9 generates aerosol, the aerosol is discharged from the air outlet channel 35 for use by the user.

[0029] In another embodiment, the connecting member may also include only the first connecting tube 21 or the second connecting tube 31, and only one end of the heating tube 1 is plugged into the first mounting groove 24 on the first connecting tube 21 or the second mounting groove 34 on the second connecting tube 31, and the other end of the heating tube 1 can be used for sealing connection with other structures in the heating non-combustion appliance.

[0030] In some embodiments in which the connecting member includes a first connecting tube 21 and a second connecting tube 31, the end surface of the first end of the heating tube 1 can be arranged to abut against the bottom wall of the first mounting groove 24 in the axial direction of the heating tube 1, and the end surface of the second end can be arranged to abut against the bottom wall of the second mounting groove 34 in the axial direction of the heating tube 1, so that the heating tube 1 is clamped between the first connecting tube 21 and the second connecting tube 31 in the axial direction.

[0031] Of course, in another embodiment in which the connecting member includes the first connecting tube 21 and the second connecting tube 31, please refer to Figure 2 , an atomizing assembly may also be provided, including a heat exchange core 6, the heat exchange core 6 including a heat exchange portion 61 and an outer flange 62 connected in the axial direction of the heating tube 1, the outer circumferential surfaces of the outer flange 62 and the heat exchange portion 61 are both cylindrical surfaces, and the radial dimension of the outer flange 62 is greater than the radial dimension of the heat exchange portion 61; the heating tube 1 has a heat exchange cavity 12, the heat exchange cavity 12 and the accommodating cavity 11 are arranged in the axial direction of the heating tube 1, the heat exchange portion 61 is located in the heat exchange cavity 12, and the heat exchange portion 61 has a heat exchange airway 611 connected to the accommodating cavity 11, so that the airflow entering the heat exchange cavity 12 is in the heat exchange airway 611 After being heated, the internal heat flows to the accommodating chamber 11, and the outer flange 62 is located on one axial side of the heating tube 1 in the axial direction of the heating tube 1; in the axial direction of the heating tube 1, the outer flange 62 is clamped between the heating tube 1 and the bottom wall of the first mounting groove 24, which not only can achieve the relative fixation of the position of the heat exchange core 6 and the heating tube 1, but also can reduce the contact area between the heating tube 1 and the first connecting tube 21, which helps to reduce the heat transfer of the heating tube 1 to the first connecting tube 21 in the axial direction of the heating tube 1, thereby reducing the heat loss of the heating tube 1 and reducing the energy consumption of the entire atomization assembly.

[0032] Further, in one embodiment, please continue to refer to Figure 2 The atomization assembly also includes a guide member 7, which is located between the heat exchange chamber 12 and the accommodating chamber 11. The guide member 7 is fixedly connected to the heat exchange core 6. For example, a clamping piece extending toward the accommodating chamber 11 can be provided on the heat exchange core 6 made of metal. After the guide member 7 and the heat exchange core 6 are installed in place, the clamping piece is bent to clamp the guide member 7 between the clamping piece and the heat exchange portion 61, so as to fix the position of the guide member 7 and the heat exchange core 6. The guide member 7 has a guide air channel 71 connecting the heat exchange air channel 611 and the accommodating chamber 11. The guide air channel 71 can make the temperature of the air flow entering the accommodating chamber 11 more uniform, and the cross-sectional size of the guide air channel 71 can be adjusted to adjust the flow rate of the air flow in the heating tube 1, thereby adjusting the rate at which the aerosol is discharged from the air outlet channel 35; in addition, the guide member 7 can also prevent the heat exchange core 6 from directly contacting the aerosol generating matrix 9, thereby preventing the aerosol generating matrix 9 from being locally overheated and generating stray gas, affecting the user experience.

[0033] Of course, in other embodiments, when the air flow velocity in the air flow channel is constant and the temperature at various locations of the heat exchange core 6 is uniform, the flow guide 7 may not be provided.

[0034] Alternatively, in other embodiments, the heat exchange core 6 may not be provided, so that the axial end surface of the first end of the heating tube 1 directly abuts against the bottom wall of the first mounting groove 24 on the first connecting tube 21, so that the aerosol generating substrate 9 in the accommodating cavity 11 is directly heated by the heating tube 1, and the aerosol generating substrate 9 generates aerosol. Alternatively, if the heat exchange core 6 is provided, the heat exchange core 6 is entirely located in the heating tube 1, and a retaining spring is provided in the heating tube 1 to fix the position of the heat exchange core 6 in the heat exchange cavity 12.

[0035] Please refer to Figure 2 The heating tube 1 is welded to the connecting piece, a welding seam is formed between the outer peripheral surface of the heating tube 1 and the side wall of the installation groove, and the heating tube 1 and the connecting piece are welded and sealed at the welding seam. It should be noted that Figure 2 Only the positional relationship of the various components in the atomization assembly is shown, and the structures of the first connecting tube 21 and the second connecting tube 31 in the connecting member are the structures before being welded to the heating tube 1.

[0036] For some examples, please refer to Figure 2 The heating tube 1 is welded to the first connecting tube 21 and the second connecting tube 31 respectively, and the welding seam includes a first welding seam and a second welding seam. The first welding seam is located between the outer circumference of the heating tube 1 and the groove side wall of the first installation groove 24, and the second welding seam is located between the outer circumference of the heating tube 1 and the groove side wall of the second installation groove 34. The heating tube 1 and the first connecting tube 21 are sealed by the first welding seam, and the heating tube 1 and the second connecting tube 31 are sealed by the second welding seam; in this way, the stability, strength and reliability of the connection structure of the heating tube 1 with the first connecting tube 21 and the second connecting tube 31 can be ensured, which helps to improve the life of the entire atomization assembly; and the sealing performance of the connection positions of the heating tube 1 with the first connecting tube 21 and the second connecting tube 31 can be ensured, which can prevent hot air flow and aerosol from overflowing from the connection positions of the heating tube 1 with the first connecting tube 21 and the heating tube 1 with the second connecting tube 31, which helps to ensure the user experience and further improve the service life of the entire atomization assembly.

[0037] Of course, in other embodiments, only one of the first connecting tube 21 and the second connecting tube 31 can be welded to the heating tube 1 and sealed by the welding seam, and the other can be sealed and connected to the heating tube 1 by a seal with good aging resistance. This can also achieve the above-mentioned effect to a certain extent, thereby achieving the purpose of increasing the life of the atomization component and ensuring the user experience.

[0038] In some embodiments, the heating tube 1 is a metal tube, and the first connecting tube 21 and the second connecting tube 31 can be high temperature resistant plastic parts. The welding method of the heating tube 1 and the connecting piece can be at least one of ultrasonic welding, friction welding, and laser welding, such as ultrasonic welding, or laser welding, but it should be noted that if laser welding is used, the connecting piece is made of a light-transmitting material at least at the weld position; of course, in other embodiments, the welding method of the heating tube 1 and the connecting piece can also be other methods that can realize the welding of non-metallic high temperature resistant pipe fittings and metal pipe fittings; in addition, the welding method of the heating tube 1 and the first connecting tube 21 and the welding method of the heating tube 1 and the second connecting tube 31 can be different.

[0039] For some examples, please refer to Figure 2 , arranged in the radial direction of the heating tube 1, the groove side wall of the mounting groove on the connecting piece has an annular convex portion arranged toward the heating tube 1, and in the axial direction of the heating tube 1, the size of the annular convex portion is smaller than the size of the groove side wall of the mounting groove, and the welding seam is located at the annular convex portion in the axial direction of the heating tube 1.

[0040] In the embodiment where the heating tube 1 and the first connecting tube 21 are welded, a first welding seam is provided between the outer circumference of the heating tube 1 and the groove side wall of the first mounting groove 24, and the heating tube 1 and the first connecting tube 21 are sealed by the first welding seam, the annular protrusion is provided including a first annular protrusion 241 located on the groove side wall of the first mounting groove 24, the first annular protrusion 241 is arranged around the heating tube 1, and the first welding seam is located at the position of the first annular protrusion 241 in the axial direction of the heating tube 1. Before the heating tube 1 and the first connecting tube 21 are welded, after the heating tube 1 is inserted into the first mounting groove 24, the outer circumference of the heating tube 1 and the first annular protrusion 241 are interference-fitted, so that the first annular protrusion 241 is melted and filled in the gap between the heating tube 1 and the groove side wall of the first mounting groove 24 during the welding process, which helps to increase the sealing area between the groove side wall of the first mounting groove 24 on the first connecting tube 21 and the heating tube 1, and improve the sealing performance between the first connecting tube 21 and the heating tube 1.

[0041] In the embodiment where the heating tube 1 and the first connecting tube 21 are ultrasonically welded, since the energy of the ultrasonic horn is relatively concentrated, if it acts on the entire groove side wall of the entire first installation groove 24, a larger ultrasonic horn is required, and the energy loss of ultrasonic welding is relatively large. In order to achieve welding on the groove side wall of the entire first installation groove 24, a higher energy consumption needs to be provided. Therefore, in this embodiment, a first annular protrusion 241 is provided on the groove side wall of the first installation groove 24, so that the size of the first annular protrusion 241 in the axial direction of the heating tube 1 is smaller than the size of the groove side wall of the first installation groove 24 in the axial direction of the heating tube 1, so that a smaller ultrasonic horn can be provided, and the energy of the ultrasonic horn is concentrated on the first annular protrusion 241, which can melt the first annular protrusion 241 and reduce the energy consumption in the ultrasonic welding process. Of course, in other embodiments, if friction welding or laser welding is adopted, the first annular protrusion 241 may not be provided, and the groove side wall of the first installation groove 24 can be directly interference-fitted with the outer peripheral surface of the heating tube 1 to achieve the connection between the first connecting tube 21 and the heating tube 1.

[0042] Further, in one embodiment, please refer to Figure 2 The first annular protrusion 241 can also be arranged between the notch and the bottom wall of the first mounting groove 24 in the axial direction of the heating tube 1. For example, the first annular protrusion 241 can be arranged in the middle position of the side wall of the first mounting groove 24 in the axial direction of the heating tube 1. In this way, during the welding process, after the first annular protrusion 241 melts, it can flow to the axial sides of the heating tube 1 under the action of external pressure and fill the space between the heating tube 1 and the side wall of the first mounting groove 24, which helps to increase the connection area between the first connecting tube 21 and the heating tube 1.

[0043] Of course, in other embodiments, if the first annular protrusion 241 is disposed near the bottom wall of the first mounting groove 24 , the purpose of increasing the connection area between the first connecting tube 21 and the heating tube 1 can be achieved to a certain extent.

[0044] In the embodiment where the heating tube 1 is welded to the second connecting tube 31, a second welding seam is provided between the outer circumference of the heating tube 1 and the groove side wall of the second mounting groove 34, and the heating tube 1 and the second connecting tube 31 are sealed by the second welding seam, an annular protrusion may also be provided including a second annular protrusion 341 located on the groove side wall of the second mounting groove 34, the second annular protrusion 341 is arranged around the heating tube 1, and the second welding seam is located at the position of the second annular protrusion 341 in the axial direction of the heating tube 1. Before the heating tube 1 and the second connecting tube 31 are welded, after the heating tube 1 is inserted into the second mounting groove 34, the outer circumference of the heating tube 1 and the second annular protrusion 341 are interference-fitted, so that the second annular protrusion 341 is melted and filled in the gap between the heating tube 1 and the groove side wall of the second mounting groove 34 during the welding process, which helps to increase the sealing area between the groove side wall of the second mounting groove 34 on the second connecting tube 31 and the heating tube 1, and improve the sealing performance between the second connecting tube 31 and the heating tube 1.

[0045] Furthermore, in the embodiment where the heating tube 1 and the second connecting tube 31 are ultrasonically welded, the size of the second annular protrusion 341 in the axial direction of the heating tube 1 can also be made smaller than the size of the groove side wall of the second mounting groove 34 in the axial direction of the heating tube 1, so as to reduce the size requirements of the ultrasonic welding head and concentrate the energy of the ultrasonic welding head on the second annular protrusion 341, so as to reduce the energy consumption during the ultrasonic welding process while melting the second annular protrusion 341. Of course, in other embodiments, if friction welding or laser welding is adopted, the second annular protrusion 341 may not be provided, and the groove side wall of the second mounting groove 34 may be directly interference-fitted with the outer peripheral surface of the heating tube 1 to realize the connection between the second connecting tube 31 and the heating tube 1.

[0046] Further, in one embodiment, please refer to Figure 2 The second annular protrusion 341 can also be arranged between the notch and the bottom wall of the second mounting groove 34 in the axial direction of the heating tube 1. For example, the second annular protrusion 341 can be arranged in the middle position of the side wall of the second mounting groove 34 in the axial direction of the heating tube 1. In this way, during the welding process, after the second annular protrusion 341 melts, it can flow to the axial sides of the heating tube 1 under the action of external pressure and fill the space between the heating tube 1 and the side wall of the second mounting groove 34, thereby increasing the connection area between the second connecting tube 31 and the heating tube 1.

[0047] Of course, in other embodiments, if the second annular protrusion 341 is disposed at a position close to the bottom wall of the second mounting groove 34 , the purpose of increasing the connection area between the second connecting tube 31 and the heating tube 1 can be achieved to a certain extent.

[0048] For some examples, please refer to Figure 2The connecting piece also includes an insulating tube 41, which is located outside the heating tube 1 in the radial direction of the heating tube 1. The insulating tube 41 connects the first connecting tube 21 and the second connecting tube 31. The insulating tube 41, the first connecting tube 21, the second connecting tube 31 and the heating tube 1 enclose a thermal insulation cavity 51. Of course, if a thermal insulation structure such as an aerogel thermal insulation layer is provided on the radial outer side of the heating tube 1, the insulating tube 41 and the thermal insulation cavity 51 may not be provided.

[0049] Furthermore, in some embodiments, the heat insulating tube 41 may be integrally formed with one of the first connecting tube 21 and the second connecting tube 31, and the integral forming means forming through the same processing step, such as integral injection molding; the heat insulating tube 41 may also be welded with the other of the first connecting tube 21 and the second connecting tube 31, and there is a connecting weld between the heat insulating tube 41 and the other of the first connecting tube 21 and the second connecting tube 31, and the heat insulating tube 41 and the other of the first connecting tube 21 and the second connecting tube 31 are welded and sealed at the connecting weld. In this way, on the one hand, the connection stability and reliability between the heat insulating tube 41 and the other of the first connecting tube 21 and the second connecting tube 31 can be improved, which helps to extend the life of the atomization assembly; on the other hand, the sealing performance of the heat insulating cavity 51 can be ensured by connecting the weld and the first welding seam and the second welding seam, thereby reducing the heat loss of the heating tube 1 and reducing the energy consumption of the atomization assembly, and it can also avoid the use of sealing components, and can avoid the influence of hot air flow or aerosol overflow caused by aging of the sealing components on the user experience.

[0050] As an example, please refer to Figure 2 An insulating tube 41 is provided to be integrally formed with the second connecting tube 31. The insulating tube 41 extends toward the first connecting tube 21. The second connecting tube 31 has a cylinder body 32 and a connecting section 33 connected to the radially outer side of the cylinder body 32. The connecting section 33 connects the insulating tube 41 and the cylinder body 32, thereby realizing the integral forming of the insulating tube 41 and the second connecting tube 31.

[0051] The first connecting tube 21 has an outer protrusion 22 extending outward in the radial direction of the heating tube 1, and the outer protrusion 22 abuts against the thermal insulation tube 41 in the axial direction of the heating tube 1, and the outer protrusion 22 is also welded to the thermal insulation tube 41, and a connecting weld is provided between the thermal insulation tube 41 and the outer protrusion 22, and the thermal insulation tube 41 and the outer protrusion 22 are welded and sealed at the connecting weld.

[0052] Or in other embodiments, the insulation tube 41 is integrally formed with the first connecting tube 21, the insulation tube 41 extends toward the second connecting tube 31, the outer protrusion 22 is arranged on the second connecting tube 31, and the outer protrusion 22 and the insulation tube 41 are abutted against each other in the axial direction of the heating tube 1, and a connecting weld is provided between the outer protrusion 22 and the insulation tube 41, and the insulation tube 41 is welded and sealed at the connecting weld.

[0053] In one embodiment, the welding method between the insulation tube 41 and the outer protrusion 22 can be ultrasonic welding, laser welding or friction welding. It should be noted that if laser welding is used, the outer protrusion 22 needs to be made of opaque material and the insulation tube 41 needs to be made of translucent material.

[0054] In one embodiment, please continue to refer to Figure 2 A connecting weld between the insulation tube 41 and the outer protrusion 22 is arranged around the heating tube 1 and extends in the axial direction of the heating tube 1. The outer protrusion 22 has a connecting outer peripheral surface 221 connected to the inner peripheral surface of the insulation tube 41. The connecting outer peripheral surface 221 is provided with an annular protrusion 23 arranged toward the insulation tube 41. In the axial direction of the heating tube 1, the size of the annular protrusion 23 is smaller than the size of the connecting outer peripheral surface 221; before the insulation tube 41 and the outer protrusion 22 are welded, the outer protrusion 22 with the connecting outer peripheral surface 221 is inserted into the insulation tube 41, and the annular protrusion 23 is interference fit with the inner peripheral surface of the insulation tube 41, so that it is convenient to align the ultrasonic welding head with the position of the annular protrusion 23 to achieve melting of the annular protrusion 23, which helps to reduce the size requirements of the ultrasonic welding head and can also reduce the energy consumption of ultrasonic welding.

[0055] Of course, in other embodiments, the annular protrusion 23 may be eliminated, and before the insulation tube 41 is welded to the outer protrusion 22, the outer protrusion 22 and the insulation tube 41 are interference fit to facilitate welding of the insulation tube 41 and the outer protrusion 22 by ultrasonic welding, friction welding or laser welding.

[0056] In one embodiment, the annular protrusion 23 may also be located at the middle position of the connecting outer peripheral surface 221 in the axial direction of the heating tube 1 to increase the connection area between the outer protrusion 22 and the insulation tube 41 .

[0057] In an embodiment in which the outer protrusion 22 is arranged on the first connecting tube 21, and the insulating tube 41 and the second connecting tube 31 are integrally formed, if ultrasonic welding is adopted between the heating tube 1 and the first connecting tube 21, between the heating tube 1 and the second connecting tube 31, and between the insulating tube 41 and the first connecting tube 21, then in the processing of the atomization assembly, the first connecting tube 21 and the heating tube 1 are first welded to form an assembly, and then the assembly is welded to the second connecting tube 31; in the process of welding the assembly to the second connecting tube 31, the heating tube 1 is welded to the second connecting tube 31, and then the insulating tube 41 is welded to the first connecting tube 21, that is, the welding accuracy of the position of the heating tube 1 and the second connecting tube 31 is first ensured to first ensure the sealing performance inside the heating tube 1, and the welding accuracy between the insulating tube 41 and the first connecting tube 21 is weaker than the welding accuracy between the heating tube 1 and the second connecting tube 31.

[0058] The present application also provides a heating without burning device, please refer to Figure 1 and Figure 2The heating-without-burning device comprises a shell and an atomizing assembly in any of the above-mentioned embodiments, wherein the atomizing assembly is installed in the shell, and the shell has an air inlet and an air outlet connected to the air flow channel.

[0059] In one embodiment, please continue to refer to Figure 2 The housing includes a shell 81 and a frame 82 fixed in the shell 81, the air inlet and the air outlet are both arranged on the shell 81, the atomizing assembly is located in the shell 81 and is fixedly mounted on the frame 82. The heating without burning device also includes a positioning ring 83, an air inlet joint 84 and a sealing joint 85.

[0060] In one embodiment, please refer to Figure 2 The positioning ring 83 is located in the outer shell 81 and is installed on the skeleton 82. The positioning ring 83 is arranged close to the air outlet. The positioning ring 83 cooperates with the insulation tube 41 to limit the position of the positioning ring 83 and the second connecting tube 31 on the skeleton 82. The air outlet channel 35 formed by the second connecting tube 31 is connected with the air outlet through the channel formed by the positioning ring 83; the positioning ring 83 and the second connecting tube 31 are enclosed to form an annular installation cavity, the insulation tube forms the bottom wall of the annular installation cavity, the positioning ring 83 and the connecting section 33 respectively form the side walls of the annular installation cavity, and a clamping silica gel 86 is installed in the annular installation cavity, and the aerosol generating matrix 9 inserted into the accommodating cavity 11 of the heating tube 1 can be clamped by the clamping silica gel 86 to prevent the aerosol generating matrix 9 from escaping from the accommodating cavity 11.

[0061] In one embodiment, please continue to refer to Figure 2 The air intake connector 84 is located inside the housing 81 and is mounted on the frame 82. The internal channel of the air intake connector 84 is connected to the air inlet. The air intake connector 84 is sealed with the first connecting tube 21 through the sealing connector 85. The air intake connector 84 is also connected to the air intake channel 25 formed by the first connecting tube 21 through the internal channel of the sealing connector 85. In this way, the airflow can flow from the air inlet along the air intake connector 84, the sealing connector 85 atomization assembly, and the positioning ring 83 in sequence to the air outlet, and be discharged from the air outlet.

[0062] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. An atomizing assembly, characterized in that: include: A heating tube having a receiving cavity for receiving an aerosol generating substrate; A connecting piece is arranged at at least one end of the heating tube in the axial direction of the heating tube, the connecting piece has an air flow channel and a mounting groove, the axial end of the heating tube is located in the mounting groove, and the air flow channel is connected with the accommodating cavity through the mounting groove; the heating tube is welded to the connecting piece, a welding seam is provided between the outer peripheral surface of the heating tube and the groove side wall of the mounting groove, and the heating tube and the connecting piece are welded and sealed at the welding seam.

2. The atomizer assembly according to claim 1, characterized in that: In the radial direction of the heating tube, the groove side wall of the installation groove has an annular protrusion arranged toward the heating tube; in the axial direction of the heating tube, the size of the annular protrusion is smaller than the size of the groove side wall of the installation groove, and the welding seam is located at the annular protrusion in the axial direction of the heating tube.

3. The atomizer assembly according to claim 2, characterized in that: In the axial direction of the heating tube, the annular protrusion is located between the notch of the mounting groove and the groove bottom wall.

4. The atomizer assembly according to claim 1, characterized in that: The heating tube is connected to the connecting piece by at least one of ultrasonic welding, friction welding or laser welding.

5. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The connecting member includes a first connecting tube and a second connecting tube, the mounting groove includes a first mounting groove located on the first connecting tube and a second mounting groove located on the second connecting tube, and the heating tube is located between the first connecting tube and the second connecting tube in its axial direction; the air flow channel includes an air inlet channel located in the first connecting tube and an air outlet channel located in the second connecting tube, and the air inlet channel is connected to the air outlet channel through the heating tube; the welding seam includes a first welding seam located at the groove side wall of the first mounting groove and a second welding seam located at the groove side wall of the second mounting groove.

6. The atomizing assembly according to claim 5, characterized in that: The connecting member includes an insulating tube, which is located outside the heating tube in the radial direction of the heating tube, and connects the first connecting tube and the second connecting tube. The insulating tube, the first connecting tube, the second connecting tube and the heating tube form an insulating cavity.

7. The atomizing assembly according to claim 6, characterized in that: The thermal insulation tube and the second connecting tube are integrally formed, the thermal insulation tube and the first connecting tube are welded, a connecting weld is provided between the thermal insulation tube and the first connecting tube, and the first connecting tube and the thermal insulation tube are welded and sealed at the connecting weld.

8. The atomizer assembly according to claim 7, characterized in that: In the radial direction of the heating tube, the first connecting tube has a connecting outer peripheral surface connected to the inner peripheral surface of the insulating tube, and the connecting outer peripheral surface has an annular protrusion arranged toward the insulating tube; in the axial direction of the heating tube, the size of the annular protrusion is smaller than the size of the connecting outer peripheral surface, and the connecting weld is located at the annular protrusion in the axial direction of the heating tube.

9. The atomizer assembly according to any one of claims 1 to 4, characterized in that: The connecting member includes a first connecting tube, the air flow channel includes an air inlet channel located in the first connecting tube, and the mounting groove includes a first mounting groove provided in the first connecting tube; The atomization assembly includes a heat exchange core, the heating tube has a heat exchange cavity, the heat exchange cavity and the accommodating cavity are arranged in the axial direction of the heating tube, the heat exchange cavity connects the air inlet channel and the accommodating cavity, the heat exchange core has a heat exchange part and an outer flange, the heat exchange part is located in the heat exchange cavity, and the outer flange is clamped between the bottom wall of the first mounting groove and the heating tube in the axial direction of the heating tube.

10. A heating without burning device, characterized in that: The invention comprises a shell and an atomizer assembly according to any one of claims 1 to 9, wherein the atomizer assembly is installed in the shell, and the shell has an air inlet and an air outlet communicated with the air flow channel.

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