Flow limiting piece and atomization assembly

Abstract

According to the flow limiting piece and the atomization assembly, the flow limiting piece is located in an annular air inlet channel, the flow limiting piece comprises an annular base plate and a flow limiting unit, the flow limiting unit comprises an annular plate and an annular connecting plate, the annular base plate and the annular plate are arranged in a spaced mode in the first direction which is the same as the air inlet direction of air flow in the annular air inlet channel, and the annular connecting plate is connected with the annular base plate and the annular plate; the flow limiting piece is provided with a first annular groove and a second annular groove which are located on the two sides of the annular connecting plate, the annular base plate is provided with a first opening communicating with the first annular groove, the annular plate is provided with a second opening communicating with the second annular groove, and the annular connecting plate is provided with a communicating opening communicating with the first annular groove and the second annular groove. The first opening and the second opening are staggered with the communicating opening in the circumferential direction of the annular base plate, and aerosol needs to be bent at least four times when passing through the flow limiting piece in the direction opposite to the first direction, so that the backflow speed and the backflow amount of the aerosol are limited, the backflow probability of the aerosol can be effectively reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and in particular to a flow limiting component and an atomization assembly. Background Art

[0002] Atomization components are generally used in heat-not-burn appliances to provide an atomization channel and heat an aerosol-generating substrate, and to discharge the aerosol generated by the heated aerosol-generating substrate from the atomization channel.

[0003] Most common heat-not-burn appliances have bottom air intake. The airflow enters the heating area of ​​the heater from the bottom air intake along the air intake channel. After being heated in the heating area, it enters the atomization channel upward to heat the aerosol-generating matrix in the atomization channel to generate aerosol for the user to use. Since the atomization channel is connected to the air intake channel on the lower side through the heating area, the aerosol generated in the atomization channel is easy to flow back downward, affecting the user's experience. Utility Model Content

[0004] The present application provides a flow limiting component and an atomizing assembly to solve the technical problem that aerosol in the atomizing assembly easily flows back and affects the user experience.

[0005] According to the first aspect, an embodiment provides a flow limiting member for sealingly installing in an annular air inlet channel of an atomizer assembly, the flow limiting member comprises an annular substrate and a flow limiting unit, the flow limiting unit comprises an annular plate and an annular connecting plate, the annular substrate and the annular plate are arranged at intervals in a first direction, the annular connecting plate connects the annular substrate and the annular plate, and the first direction is in the same direction as the air inlet direction of the airflow in the annular air inlet channel;

[0006] The flow limiting member has a first annular groove and a second annular groove located on both sides of the annular connecting plate, a first opening connected to the first annular groove is provided on the annular substrate, a second opening connected to the second annular groove is provided on the annular plate, and a connecting port connecting the first annular groove and the second annular groove is provided on the annular connecting plate, and the first opening and the second opening are staggered with the connecting port in the circumferential direction of the annular substrate.

[0007] In an optional embodiment, there are multiple current limiting units, and two adjacent current limiting units are connected in the first direction; among two adjacent current limiting units, the annular connecting plate of one is connected to the annular plate of the other, and the connecting port of one and the second opening of the other are staggered in the circumferential direction of the annular substrate.

[0008] In an optional embodiment, the annular substrate has a first radial inner end and a first radial outer end, and in the first direction, the first radial inner end is located downstream of the first radial outer end; and / or the annular plate has a second radial inner end and a second radial outer end, and in the first direction, the second radial inner end is located downstream of the second radial outer end.

[0009] In an optional embodiment, the annular base plate has a first conical guide surface for guiding the airflow to flow toward the first radial inner end; and / or the annular plate has a second conical guide surface for guiding the airflow to flow toward the second radial inner end.

[0010] In an optional embodiment, the annular connecting plate has a third radial inner end and a third radial outer end, and in the first direction, the third radial outer end is located downstream of the third radial inner end, and the annular connecting plate has a third conical guide surface for guiding the airflow to flow toward the third radial outer end.

[0011] In an optional embodiment, the first opening is located at the first radial inner end in the first direction, the second opening is located at the second radial inner end in the first direction, and the communication port is located at the third radial outer end in the first direction.

[0012] According to the second aspect, an embodiment provides an atomization assembly, comprising an atomization body and a heating element, wherein the atomization body has an atomization channel for inserting an aerosol generating substrate and an annular air inlet channel arranged around the atomization channel, the atomization channel is connected to the annular air inlet channel, and the atomization body has an air inlet port connected to the annular air inlet channel; the heating element is connected to the atomization body, and in the air inlet direction of the air flow, the heating element is located between the atomization channel and the annular air inlet channel;

[0013] The atomization assembly also includes the flow limiting component described in any of the above items, and the flow limiting component is located in the annular air inlet channel. The flow limiting component is sealed with the channel wall of the annular air inlet channel, and the channel wall of the annular air inlet channel blocks the notch of the first annular groove. The channel wall of the annular air inlet channel also blocks the notch of the second annular groove.

[0014] In an optional embodiment, the atomizing body comprises a sealing cylinder, an atomizing cylinder and a base, the atomizing cylinder and the base are sealed and installed at both ends of the sealing cylinder, the atomizing channel is located in the atomizing cylinder, and the annular air inlet channel is located between the sealing cylinder and the atomizing cylinder;

[0015] The heating element is located in the sealing cylinder, and the heating element includes a heating cylinder. The heating cylinder has a heating channel connecting the annular air inlet channel and the atomization channel. The sealing cylinder has a supporting structure, and the heating cylinder is installed and supported on the supporting structure. The heating cylinder and the base are arranged at intervals in the first direction.

[0016] In an optional embodiment, the support structure divides the annular air inlet passage into a first annular air inlet cavity and a second annular air inlet cavity, and in the first direction, the first annular air inlet cavity communicates with the air inlet and the second annular air inlet cavity, and the flow limiting member is located in the first annular air inlet cavity;

[0017] In the first direction, the annular substrate is located between the annular plate and the supporting structure, and the supporting structure has a connecting hole connecting the first annular air inlet cavity and the second annular air inlet cavity, and the connecting hole is staggered with the first opening in the circumferential direction of the annular substrate.

[0018] In an optional embodiment, the heating element includes a heat exchange core and a heating element, the heat exchange core is installed in the heating tube, the heat exchange core has a heat exchange channel connected to the heating channel, and the heating element is located between the heat exchange core and the heating tube.

[0019] According to the flow limiting member and atomization assembly of the above-mentioned embodiment, since the flow limiting member is sealed and installed in the annular air inlet channel of the atomization assembly, the flow limiting member includes an annular substrate and a flow limiting unit, the flow limiting unit includes an annular plate and an annular connecting plate, the annular substrate and the annular plate are arranged at intervals in a first direction which is the same as the air inlet direction of the airflow in the annular airway, and the annular connecting plate connects the annular substrate and the annular plate; the flow limiting member has a first annular groove and a second annular groove located on both sides of the annular connecting plate, a first opening connected to the first annular groove is provided on the annular substrate, a second opening connected to the second annular groove is provided on the annular plate, and a connecting port connecting the first annular groove and the second annular groove is provided on the annular connecting plate, the first opening and the second opening are staggered with the connecting port in the circumferential direction of the annular substrate, so that when the aerosol passes through the flow limiting member against the first direction, it needs to pass through four bends, so as to limit the speed and amount of aerosol reflux, which can effectively reduce the probability of aerosol reflux and help to improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of an atomization assembly in one embodiment;

[0021] Figure 2 A bottom view of an atomizing assembly in one embodiment;

[0022] Figure 3 for Figure 2 Middle AA section view;

[0023] Figure 4 for Figure 2 Middle BB section view;

[0024] Figure 5 In another embodiment, the atomizing assembly is Figure 2 Cross-sectional view along the BB direction;

[0025] Figure 6 A schematic structural diagram of a current limiting member in one embodiment from one viewing angle;

[0026] Figure 7 FIG. 1 is a schematic structural diagram of a flow limiting component from another perspective in an embodiment.

[0027] In the figure: 1, flow limiting member; 11, annular substrate; 111, first opening; 112, first radial inner end; 113, first radial outer end; 114, first conical guide surface; 12, flow limiting unit; 13, annular plate; 131, second opening; 132, second radial inner end; 133, second radial outer end; 134, second conical guide surface; 14, annular connecting plate; 141, connecting port; 142, third radial inner end; 143, third radial outer end; 144, third conical guide surface; 15, first annular groove; 16, second annular groove; 17, third annular groove; 18, fourth annular groove; 19, support portion;

[0028] 2. Sealing cylinder; 21. Support structure; 211. Connecting section; 212. Connecting hole; 213. Support section; 3. Atomizing cylinder; 31. Atomizing channel; 32. Air inlet; 4. Base; 5. Heating element; 51. Heating cylinder; 511. Heating channel; 52. Heat exchange core; 521. Heat exchange air duct; 53. Heating element; 6. Annular air inlet channel; 61. First annular air inlet cavity; 62. Second annular air inlet cavity. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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).

[0032] The embodiment of the present application discloses a flow limiting member 1, which can be applied in an atomization assembly to reduce the probability of aerosol backflow in the atomization channel 31 and improve the user experience.

[0033] The flow limiting member 1 of the embodiment of the present application can be used for sealing installation in the annular air inlet channel 6 of the atomizing assembly. Please refer to Figures 3 to 7 The flow limiting component 1 includes an annular substrate 11 and a flow limiting unit 12. The flow limiting unit 12 includes an annular plate 13 and an annular connecting plate 14. The annular substrate 11 and the annular plate 13 are arranged at intervals in a first direction. The annular connecting plate 14 connects the annular substrate 11 and the annular plate 13. The first direction is the same as the air intake direction of the airflow in the annular air intake channel 6.

[0034] The flow limiting member 1 has a first annular groove 15 and a second annular groove 16 located on both sides of the annular connecting plate 14, a first opening 111 communicating with the first annular groove 15 is provided on the annular substrate 11, a second opening 131 communicating with the second annular groove 16 is provided on the annular plate 13, and a connecting port 141 connecting the first annular groove 15 and the second annular groove 16 is provided on the annular connecting plate 14. The first opening 111 and the connecting port 141 are staggered in the circumferential direction of the annular substrate 11, and the second opening 131 is also staggered in the circumferential direction of the annular substrate 11. When the aerosol passes through the flow limiting member 1 in the opposite direction to the first direction, please refer to Figure 7 , at least four bends are required ( Figure 7 The direction indicated by the arrow in the middle is the aerosol reflux direction), so as to limit the speed and amount of aerosol reflux, the probability of aerosol reflux can be effectively reduced, and the user experience can be improved.

[0035] Please continue to refer to Figures 3 to 7In one embodiment, the annular plate 13, the annular base plate 11 and the annular connecting plate 14 are all plate-like structures arranged in the annular air inlet channel 6, and the flow limiting member 1 is sealed with the channel wall of the annular air inlet channel 6 so that the channel wall of the annular air inlet channel 6 blocks the notch of the first annular groove 15, and the channel wall of the annular air inlet channel 6 also blocks the notch of the second annular groove 16, so that when the airflow passes through the flow limiting member 1 in the annular air inlet channel 6, it can only pass through the first opening 111 and the second opening 131.

[0036] By arranging an annular connecting plate 14 between the annular substrate 11 and the annular plate 13, the annular connecting plate 14 divides the annular space between the annular substrate 11 and the annular plate 13 into a first annular groove 15 and a second annular groove 16, and a connecting port 141 connecting the first annular groove 15 and the second annular groove 16 is arranged on the annular connecting plate 14, so as to increase the number of bending times of the aerosol in the process of passing through the flow limiting member 1, thereby achieving the effect of reducing the aerosol reflux flow rate and aerosol reflux amount.

[0037] It should be noted that the air intake path and the aerosol return path are the same path, and the air intake direction is opposite to the aerosol return direction. The flow limiting component 1 also has a certain limiting effect on the intake airflow. However, since the pressure difference between the inside and outside of the atomizer component is large during air intake, and the pressure difference between the inside and outside of the atomizer component is small during aerosol return, the flow limiting effect of the flow limiting component 1 on the aerosol is much greater than the flow limiting effect on the intake airflow.

[0038] In one embodiment, in order to ensure the flow rate of the intake air flow, a plurality of first openings 111, a plurality of second openings 131 and a connecting opening 141 may be provided, wherein the plurality of first openings 111 are arranged at intervals in the circumferential direction of the annular substrate 11, the plurality of second openings 131 are arranged at intervals in the circumferential direction of the annular plate 13, and the plurality of connecting openings 141 are arranged at intervals in the circumferential direction of the annular connecting plate 14.

[0039] In one embodiment, in order to further increase the number of bends of the aerosol when it flows through the flow limiting member 1, please refer to Figure 5 , a plurality of current limiting units 12 may be provided, and the plurality of current limiting units 12 are all located on the same side of the annular substrate 11 in the first direction, and two adjacent current limiting units 12 are connected in the first direction, so that the annular connecting plate 14 in one of the two adjacent current limiting units 12 is connected to the annular plate 13 in the other current limiting unit 12, and the connecting opening 141 of the annular connecting plate 14 and the second opening 131 of the annular plate 13 in the connected annular connecting plate 14 are staggered in the circumferential direction of the annular substrate 11.

[0040] As an example, please refer to Figure 5There are two flow limiting units 12, and the two flow limiting units 12 are both located upstream of the annular substrate 11 in the first direction. After the two flow limiting units 12 are connected, the annular plate 13 of one flow limiting unit 12 is enclosed with the other flow limiting unit 12 to form a third annular groove 17 and a fourth annular groove 18 located on both sides of the annular connecting plate 14 in the other flow limiting unit 12, wherein the second opening 131 on the annular plate 13 in one flow limiting unit 12 connects the second annular groove 16 with the third annular groove 17, the connecting port 141 on the annular connecting plate 14 in the other flow limiting unit 12 connects the third annular groove 17 with the fourth annular groove 18, and the second opening 131 on the annular plate 13 in the other flow limiting unit 12 connects the fourth annular groove 18; and the first opening 111, the second opening 131 or the connecting port 141 connected to the same annular groove are staggered in the circumferential direction of the annular substrate 11 to increase the number of bends of the aerosol flowing through the flow limiting member 1.

[0041] In this way, when the aerosol passes through the flow limiting component 1, it enters the first annular groove 15 along the first opening 111 of the annular substrate 11 in sequence, enters the second annular groove 16 from the first annular groove 15 along the connecting port 141 of the annular connecting plate 14 in one of the flow limiting units 12, and then enters the third annular groove 17 from the second annular groove 16 along the second opening 131 of the annular plate 13 in one of the flow limiting units 12, and then enters the fourth annular groove 18 along the connecting port 141 of the annular connecting plate 14 in another flow limiting unit 12, and finally is discharged from the second opening 131 on the annular plate 13 in another flow limiting unit 12. In this way, the airflow undergoes eight bends when passing through the flow limiting component 1, which can well limit the flow rate of the aerosol and the amount of aerosol passing through the flow limiting component 1, that is, it can greatly reduce the probability of aerosol reflux, thereby better improving the user experience.

[0042] In other embodiments, within the range permitted by the processing conditions, three, four or more flow limiting units 12 can be provided. Of course, in order to reduce the processing cost, providing one flow limiting unit 12 can also reduce the probability of aerosol reflux in the airway, thereby improving the user experience.

[0043] For further information, please refer to Figures 3 to 7In some embodiments, the annular substrate 11 and / or the annular plate 13 are both annular plate-like structures that are arranged obliquely or in an arc shape. The annular substrate 11 may have a first radial inner end 112 and a first radial outer end 113 arranged in its radial direction. In the first direction, the first radial inner end 112 is located downstream of the first radial outer end 113. The annular substrate 11 is provided with two first side surfaces that are arranged opposite to each other in the first direction. The two first side surfaces are both conical surfaces that are arranged at an acute angle to the first direction. In other embodiments, the two first side surfaces are both arc surfaces, step surfaces or curved surfaces that are arranged in the radial direction of the annular substrate 11, so as to satisfy that the first radial inner end 112 is located downstream of the first radial outer end 113 in the first direction.

[0044] In addition, the annular plate 13 may be provided with a second radial inner end 132 and a second radial outer end 133 arranged in its radial direction. In the first direction, the second radial inner end 132 is provided downstream of the second radial outer end 133. The annular plate 13 may be provided with two second side surfaces arranged opposite to each other in the first direction. Both of the second side surfaces are conical surfaces arranged at an acute angle to the first direction. Alternatively, in other embodiments, both of the second side surfaces may be arc surfaces, step surfaces or curved surfaces arranged in the radial direction of the annular substrate 11, so as to satisfy that the second radial inner end 132 is provided downstream of the second radial outer end 133 in the first direction.

[0045] Of course, in other embodiments, it is also possible to arrange that the radial inner end of one of the annular base plate 11 and the annular plate 13 is located downstream of the radial outer end in the first direction.

[0046] In this way, based on the principle of the Tesla valve, the flow velocity and flow rate of the airflow passing through the flow limiting member 1 in a first direction can be increased, and the flow velocity and flow rate of the aerosol flowing back through the flow limiting member 1 in a direction opposite to the first direction can be reduced, that is, while ensuring the air intake rate and air intake volume, the probability of aerosol reflux can be further reduced.

[0047] Further, in some embodiments, please continue to refer to Figures 3 to 7The annular connecting plate 14 may also be provided with a third radial inner end 142 and a third radial outer end 143 arranged in its radial direction. In the first direction, the third radial outer end 143 is provided to be located downstream of the third radial inner end 142. The annular connecting plate 14 may be provided with two third side surfaces arranged opposite to each other in the first direction. Both the third side surfaces are provided to be conical surfaces arranged at an acute angle to the first direction. Alternatively, in other embodiments, both the third side surfaces are provided to be arc surfaces, step surfaces or curved surfaces arranged in the radial direction of the annular connecting plate 14, so as to satisfy that the third radial outer end 143 is located downstream of the third radial inner end 142 in the first direction. In this way, the Tesla valve principle can be utilized to the maximum extent, the flow velocity and flow rate of the intake airflow along the first direction can be further increased, and the flow velocity and flow rate of the aerosol flowing back in the direction opposite to the first direction can be reduced.

[0048] Of course, if the angles between the annular substrate 11 and the annular plate 13 and the first direction are arranged at an acute angle, and the annular connecting plate 14 is extended in its radial direction, this can also achieve the effect of increasing the air intake rate and air intake volume and reducing the aerosol reflux rate and reflux volume to a certain extent.

[0049] In one embodiment, please refer to Figures 3 to 7 The annular base plate 11 is arranged parallel to the annular plate 13, the thickness of the annular base plate 11 is uniform at all places, the thickness of the annular plate 13 is uniform at all places, the angle between the annular base plate 11 and the first direction is acute, the thickness of the annular connecting plate 14 is uniform at all places, the angle between the annular connecting plate 14 and the first direction is acute, and the annular base plate 11 and the annular connecting plate 14 are staggered; in the first direction, the first radial inner end 112 of the annular base plate 11 is located downstream of the first radial outer end 113, the second radial inner end 132 of the annular plate 13 is located downstream of the second radial outer end 133, and the third radial outer end 143 of the annular connecting plate 14 is located downstream of the third radial inner end 142.

[0050] The third radial outer end 143 of the annular connecting plate 14 is connected to the first side surface of the annular substrate 11, the third radial inner end 142 is used to connect to the channel wall of the annular air inlet channel 6 or can also be connected to the second side surface of the annular plate 13, the second radial inner end 132 of the annular plate 13 is connected to the third side surface of the annular connecting plate 14 or can also be used to connect to the channel wall of the annular air inlet channel 6, the second radial outer end 133 is used to connect to the channel wall of the annular air inlet channel 6, the first radial inner end 112 and the first radial outer end 113 of the annular substrate 11 are both connected to the channel wall of the annular air inlet channel 6, and the first side surface on the annular substrate 11, the second side surface on the annular plate 13 and the third side surface on the annular connecting plate 14 are all part of the conical surface, so that The annular base plate 11 has a first conical guide surface 114 for guiding the airflow toward the first radial inner end 112, the annular plate 13 has a second conical guide surface 134 for guiding the airflow toward the second radial inner end 132, and the annular connecting plate 14 has a third conical guide surface 144 for guiding the airflow toward the third radial outer end 143. The first conical guide surface 114 is the first side surface of the annular base plate 11 facing the air inlet 32 ​​of the annular air inlet channel 6 in the first direction, the second conical guide surface 134 is the second side surface of the annular plate 13 facing the air inlet 32 ​​of the annular air inlet channel 6 in the first direction, and the third conical guide surface 144 is the third side surface of the annular connecting plate 14 facing the air inlet 32 ​​of the annular air inlet channel 6 in the first direction. In this way, the entire flow limiting member 1 can use the guiding effect of the three conical guide surfaces on the airflow, further improve the flow velocity and air intake of the airflow in the first direction, and further reduce the probability of aerosol backflow in the direction opposite to the first direction.

[0051] Of course, in other embodiments, if the first side surface of the annular substrate 11, the second side surface of the annular plate 13 and the third side surface of the annular connecting plate 14 arranged in the first direction toward the air inlet 32 ​​of the annular air inlet channel 6 are all arc-shaped surfaces, step surfaces or curved surfaces with guiding functions, this can also increase the flow rate and air volume of the intake airflow in the first direction while further reducing the probability of aerosol backflow in the direction opposite to the first direction.

[0052] In one embodiment, please continue to refer to Figures 3 to 7 The first opening 111 on the annular substrate 11 is located at the first radial inner end 112 in the first direction, the second opening 131 on the annular connecting plate 14 is located at the second radial inner end 132 in the first direction, and the connecting port 141 on the annular connecting plate 14 is located at the third radial outer end 143 in the first direction. This ensures that when the intake airflow passes through the flow limiting member 1 along the first direction, the intake airflow will not generate backflow in the direction opposite to the first direction.

[0053] During the aerosol reflux process, in the first direction, the first side surface of the annular substrate 11 facing away from the air inlet 32, the second side surface of the annular plate 13 facing away from the air inlet 32 ​​and the third side surface of the annular connecting plate 14 facing away from the air inlet 32 ​​can all play a good guiding role in the refluxed aerosol. The position setting of the above-mentioned first opening 111, the second opening 131 and the connecting port 141 can also enable the aerosol to cross the corresponding first opening 111, the second opening 131 and the connecting port 141 under the guidance of the above-mentioned first side surface, the second side surface and the third side surface during the aerosol reflux process, which will cause the aerosol to have a counterflow along the first direction before passing through the first opening 111, the second opening 131 or the connecting port 141, thereby further reducing the reflux rate and reflux amount of the aerosol.

[0054] Of course, in other embodiments, the first opening 111 may be arranged close to the first radial outer end 113 in the first direction, the second opening 131 may be arranged close to the second radial inner end 132 in the first direction, and the connecting opening 141 may be arranged close to the third radial outer end 143 in the first direction, which may also play a role in reducing the aerosol reflux rate and reflux amount.

[0055] In some embodiments, in order to prevent the annular substrate 11 in the flow limiting member 1 from directly contacting other components in the annular air inlet passage 6 and causing the first opening 111 to be blocked, the flow limiting member 1 is provided with a support portion 19, which is connected to the annular substrate 11 and extends in the first direction. The support portion 19 is arranged around the center of the annular substrate 11, and the support portion 19 avoids the first opening 111. In this way, the first opening 111 can be separated from other components in the annular air inlet passage 6 in the first direction by the support portion 19 to ensure that the airflow can be discharged from the first opening 111. Of course, in other embodiments, if there are no components or structures in the annular air inlet passage 6 that block the first opening 111, the provision of the support portion 19 in the flow limiting member 1 can also be cancelled.

[0056] Furthermore, the flow limiting member 1 is made of rubber material or plastic material, such as silicone, and the flow limiting member 1 can be installed in the annular air inlet passage 6 by interference fit to achieve sealing with the annular air inlet passage 6.

[0057] The present application also discloses an atomization assembly, please refer to Figures 1 to 5The atomizer assembly includes an atomizer body and a heater 5. The atomizer body has an atomizer channel 31 for inserting an aerosol generating matrix and an annular air inlet channel 6 arranged around the atomizer channel 31. The atomizer channel 31 is connected to the annular air inlet channel 6. The atomizer body has an air inlet 32 ​​connected to the annular air inlet channel 6; the heater 5 is connected to the atomizer body. In the air inlet direction of the air flow, the heater 5 is located between the atomizer channel 31 and the annular air inlet channel 6; the atomizer assembly also includes a flow limiting member 1 in any of the above embodiments. The flow limiting member 1 is located in the annular air inlet channel 6. The flow limiting member 1 is sealed with the channel wall of the annular air inlet channel 6 so that the channel wall of the annular air inlet channel 6 blocks the notch of the first annular groove 15 and the notch of the second annular groove 16.

[0058] In one embodiment, the heating element 5 may include a needle-type heating body, and the heating element 5 extends into the atomizing channel 31 for piercing the aerosol generating substrate. The atomizing body may include a sealing tube 2, an atomizing tube 3 and a base 4, the atomizing tube 3 and the base 4 are sealed and installed at both ends of the axial direction of the sealing tube 2, the base 4 and the atomizing tube 3 are arranged at intervals, the atomizing channel 31 is located in the atomizing tube 3, the annular air inlet channel 6 is located between the sealing tube 2 and the atomizing tube 3, the annular air inlet channel 6 is connected to the atomizing channel 31 at one end where the base 4 is located, the air inlet 32 ​​may be arranged on the barrel wall of the atomizing tube 3 and connected to the socket on the atomizing channel 31 for inserting the aerosol generating substrate, or the air inlet 32 ​​may also be arranged on the barrel wall of the sealing tube 2. In other embodiments, the atomizing tube 3 may also be integrally formed with the sealing tube 2.

[0059] The heating element 5 is located in the sealing tube 2. The heating element 5 can be installed on the base 4. The heating element 5 extends into the body of the atomizing tube 3 to achieve heating for the aerosol generation substrate.

[0060] In one embodiment, please refer to Figures 2 to 5 The heating element 5 may further include a heating tube 51, which has a heating channel 511 connecting the annular air inlet channel 6 and the atomizing channel 31. The sealing tube 2 has a supporting structure 21, and the heating tube 51 is mounted and supported on the supporting structure 21, so that the heating tube 51 and the base 4 are spaced apart in the first direction, so that the heat of the heating tube 51 can be prevented from being transferred to the supporting structure 21 by direct contact, which helps to reduce the heat loss of the heating element 5, thereby reducing the energy consumption of the entire atomizing assembly. Of course, in other embodiments, the supporting structure 21 may not be provided on the sealing tube 2, and the heating tube 51 may be installed at the end of the atomizing tube 3 facing the base 4.

[0061] Further, in one embodiment, the support structure 21 can be arranged around the atomization channel 31, and the support structure 21 has a connecting section 211 extending in the radial direction of the annular air inlet channel 6 toward the atomization channel 31, and also has a support section 213 extending in the first direction, that is, the air inlet direction in the annular air inlet channel 6 toward the base 4. The connecting section 211 is connected to the support section 213, and the overhanging end of the support section 213 has a hook structure. The heating tube 51 is provided with an outer flange at one end close to the atomization tube 3 in its extension direction. The heating tube 51 can be hung on the overhanging end of the support section 213 through the outer flange to achieve the fixation of the position of the heating tube 51 in the sealing tube 2. Under the action of the support structure 21, the axial end face of the heating tube 51 is also in contact with the axial end face of the atomization tube 3, and the outer peripheral surface of the atomization tube 3 is also in contact with the radial inner peripheral surface of the support section 213 on the support structure 21, so as to avoid the atomization channel 31 from being connected to the annular air inlet channel 6 at the connection position between the atomization tube 3 and the heating tube 51.

[0062] In one embodiment, the support structure 21 divides the annular air inlet channel 6 into a first annular air inlet cavity 61 and a second annular air inlet cavity 62. In the first direction, the first annular air inlet cavity 61 connects the air inlet port 32 with the second annular air inlet cavity 62. The connecting section 211 of the support structure 21 has a connecting hole 212, through which the first annular air inlet cavity 61 and the second annular air inlet cavity 62 can be connected. The flow limiting member 1 is located in the first annular air inlet cavity 61. In the first direction, the flow limiting unit 12 is located between the annular substrate 11 and the air inlet port 32. The support portion 19 connected to the annular substrate 11 can be abutted against the connecting section 211 of the support structure 21 in the first direction to limit the position of the flow limiting member 1 in the first direction, and it can also avoid the annular substrate 11 from contacting the connecting section 211 on the support structure 21 to cause the first opening 111 to be blocked.

[0063] In one embodiment, a plurality of connecting holes 212 may be provided on the connecting section 211 of the support structure 21, and the plurality of connecting holes 212 are arranged at intervals in the circumferential direction of the atomization channel 31. The support structure 21 and the flow limiting member 1 are enclosed in the annular air inlet channel 6 to form an annular groove. In order to increase the number of bends during the aerosol reflux process, the connecting holes 212 and the first opening 111 on the annular substrate 11 are arranged staggered in the circumferential direction of the annular substrate 11. In this way, the aerosol can enter from the second annular air inlet cavity 62 through the connecting holes 212 into the annular groove formed by the support structure 21 and the flow limiting member 1, and then enter from the annular groove along the first opening 111 into the first annular groove 15 of the flow limiting member 1. In this way, the refluxed aerosol can be bent twice before entering the flow limiting member 1, which can further reduce the reflux rate and reflux amount of the aerosol, and reduce the reflux probability of the aerosol.

[0064] Of course, in other embodiments, the connecting holes 212 and the first openings 111 may not be arranged staggered in the circumferential direction of the annular substrate 11 , so that the probability of aerosol backflow can be reduced by only multiple bends of the aerosol flowing through the flow limiting member 1 .

[0065] Furthermore, the connecting section 211 extends in a first direction from the sealing tube 2 to the atomizing tube 3 gradually away from the air inlet 32, and the connecting section 211 can be parallel to the annular substrate 11, so that the connecting section 211 can also guide the intake airflow to help increase the flow rate and flow of the intake airflow.

[0066] For some examples, please refer to Figures 3 to 5 The heating element 5 in the atomization assembly includes a heat exchange core 52 and a heating element 53. The heating element 53 is a cylindrical structure. The heat exchange core 52 and the heating element 53 are both located in the heating tube 51. The heat exchange core 52 is located between the heating tube 51 and the heat exchange core 52. The heat exchange core 52, the heating element 53 and the heating tube 51 are fixedly connected by interference fit. The heating element 53 has a lead passing through the base 4. The heat exchange core 52 has a heat exchange airway 521 connected to the heating channel 511. The airflow in the annular air inlet channel 6 can be heated through the heat exchange airway 521 and then enter the heating channel 511 and the atomization channel 31 to heat the aerosol generation matrix. The heating tube 51 has an inner convex portion, which abuts against the heat exchange core 52 in the axial direction of the heating tube 51 to prevent the aerosol generation matrix from directly contacting the heat exchange core 52.

[0067] Part of the heat of the heating element 53 is transferred to the heat exchange core 52, which heats the airflow flowing through the heat exchange air channel 521, and the other part of the heat is transferred to the heating tube 51. The tube wall of the heating tube 51 forms the channel wall of the annular air inlet channel 6. The airflow flowing through the annular air inlet channel 6 can be preheated by the tube wall of the heating tube 51, thereby improving the heat utilization rate of the atomization component and reducing the loss of the atomization component.

[0068] Of course, in other embodiments, the heating element 53 in the heating element 5 can also be a heating film attached to the outer wall of the heating tube 51. The heat of the heating film is transferred to the heat exchange core 52 through the heating tube 51. The heat of the heating film can also heat the airflow flowing through the annular air inlet channel 6.

[0069] 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. A current limiting component, characterized in that: Used to be sealed and installed in the annular air inlet channel of the atomizer assembly, the flow limiting member includes an annular base plate and a flow limiting unit, the flow limiting unit includes an annular plate and an annular connecting plate, the annular base plate and the annular plate are arranged at intervals in a first direction, the annular connecting plate connects the annular base plate and the annular plate, and the first direction is the same as the air inlet direction of the airflow in the annular air inlet channel; The flow limiting member has a first annular groove and a second annular groove located on both sides of the annular connecting plate, a first opening connected to the first annular groove is provided on the annular substrate, a second opening connected to the second annular groove is provided on the annular plate, and a connecting port connecting the first annular groove and the second annular groove is provided on the annular connecting plate, and the first opening and the second opening are staggered with the connecting port in the circumferential direction of the annular substrate.

2. The flow limiting member according to claim 1, characterized in that: There are multiple current limiting units, and two adjacent current limiting units are connected in the first direction; among two adjacent current limiting units, the annular connecting plate of one is connected to the annular plate of the other, and the connecting port of one and the second opening of the other are staggered in the circumferential direction of the annular substrate.

3. The flow limiting member according to claim 1, characterized in that: The annular substrate has a first radially inner end and a first radially outer end, and in the first direction, the first radially inner end is located downstream of the first radially outer end; and / or the annular plate has a second radially inner end and a second radially outer end, and in the first direction, the second radially inner end is located downstream of the second radially outer end.

4. The flow limiting member according to claim 3, characterized in that: The annular base plate has a first conical guide surface for guiding the airflow to flow toward the first radial inner end; and / or the annular plate has a second conical guide surface for guiding the airflow to flow toward the second radial inner end.

5. The flow limiting member according to claim 4, characterized in that: The annular connecting plate has a third radial inner end and a third radial outer end. In the first direction, the third radial outer end is located downstream of the third radial inner end. The annular connecting plate has a third conical guiding surface for guiding the airflow to flow toward the third radial outer end.

6. The flow limiting member according to claim 5, characterized in that: The first opening is located at the first radial inner end in the first direction, the second opening is located at the second radial inner end in the first direction, and the communication port is located at the third radial outer end in the first direction.

7. An atomizing assembly, characterized in that: The invention comprises an atomizing body and a heating element, wherein the atomizing body has an atomizing channel for inserting an aerosol generating matrix and an annular air inlet channel arranged around the atomizing channel, the atomizing channel is communicated with the annular air inlet channel, and the atomizing body has an air inlet communicated with the annular air inlet channel; the heating element is connected to the atomizing body, and in the air inlet direction of the air flow, the heating element is located between the atomizing channel and the annular air inlet channel; The atomization assembly also includes a flow limiting member according to any one of claims 1 to 6, wherein the flow limiting member is located in the annular air inlet channel, and the flow limiting member is sealed with the channel wall of the annular air inlet channel, and the channel wall of the annular air inlet channel blocks the notch of the first annular groove, and the channel wall of the annular air inlet channel also blocks the notch of the second annular groove.

8. The atomizer assembly according to claim 7, characterized in that: The atomizing body comprises a sealing cylinder, an atomizing cylinder and a base, the atomizing cylinder and the base are sealed and installed at both ends of the sealing cylinder, the atomizing channel is located in the atomizing cylinder, and the annular air inlet channel is located between the sealing cylinder and the atomizing cylinder; The heating element is located in the sealing cylinder, and the heating element includes a heating cylinder. The heating cylinder has a heating channel connecting the annular air inlet channel and the atomization channel. The sealing cylinder has a supporting structure, and the heating cylinder is installed and supported on the supporting structure. The heating cylinder and the base are arranged at intervals in the first direction.

9. The atomizer assembly according to claim 8, characterized in that: The support structure divides the annular air inlet passage into a first annular air inlet cavity and a second annular air inlet cavity. In the first direction, the first annular air inlet cavity communicates with the air inlet port and the second annular air inlet cavity. The flow limiting member is located in the first annular air inlet cavity. In the first direction, the annular substrate is located between the annular plate and the supporting structure, and the supporting structure has a connecting hole connecting the first annular air inlet cavity and the second annular air inlet cavity, and the connecting hole is staggered with the first opening in the circumferential direction of the annular substrate.

10. The atomizer assembly according to claim 8, characterized in that: The heating element comprises a heat exchange core and a heating element. The heat exchange core is installed in the heating cylinder. The heat exchange core has a heat exchange channel connected with the heating channel. The heating element is located between the heat exchange core and the heating cylinder.

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