Liquid guide structure, atomizing core and aerosol generating device

Abstract

The invention is suitable for the technical field of atomization, and provides a liquid guide structure, an atomization core and an aerosol generating device.One side, in the first direction, of the liquid guide structure is used for arranging a heating structure, a plurality of microcavity sets are arranged in the liquid guide structure, and each microcavity set comprises a plurality of microcavities arranged in the second direction; the microcavity group is provided with a first end and a second end which are opposite in the second direction, at least part of each microcavity is gradually expanded from one end close to the first end in the direction from the first end to the second end, and the first direction is perpendicular to the second direction. The arrangement is such that the aerosol-generating substrate located at the group of microcavities can be rapidly transported from the first end towards the second end under the synergistic effect of a Laplace pressure gradient and a wetting gradient. The second direction can be arranged in the longitudinal direction, and the first end is located at the bottom of the second end, so that the liquid guiding efficiency of the liquid guiding structure from the bottom to the top can be improved, and the problem of core burning caused by dry burning due to low liquid guiding efficiency of the liquid guiding structure is solved.

Description

Technical Field

[0001] This application belongs to the technical field of atomization, and more specifically, relates to a liquid guiding structure, an atomization core, and an aerosol generating device. Background Art

[0002] An aerosol generating device refers to a device used to heat an aerosol generating substrate so that the aerosol generating substrate is atomized to form an aerosol. Among them, the aerosol formed by atomizing the aerosol generating substrate can be used for a user to inhale.

[0003] An aerosol generating device generally includes an atomization core. The atomization core can include a heating structure and a liquid guiding structure. The liquid guiding structure is used to transport the aerosol generating substrate to the heating structure. The heating structure is used to generate heat when powered on. The heat generated by the heating structure is used to heat the aerosol generating substrate so that the aerosol generating substrate is atomized to form an aerosol.

[0004] It should be noted that the liquid guiding structure and the heating structure are generally arranged horizontally. Vertically, when the liquid level of the aerosol generating substrate is lower than the top of the liquid guiding structure, the transport of the aerosol generating substrate on the liquid guiding structure is mainly achieved by the capillary effect of the liquid guiding structure. On this basis, the lower the liquid level of the aerosol generating substrate in the vertical direction, the lower the transport efficiency of the aerosol generating substrate on the liquid guiding structure. Especially for the transport operation of the aerosol generating substrate from the bottom to the top in the vertical direction, because the capillary force of the liquid guiding structure is difficult to be greater than the gravity of the aerosol generating substrate, the transport efficiency will be significantly reduced, thus making the liquid guiding efficiency of the liquid guiding structure relatively low. In this way, when the atomization speed of the aerosol generating substrate is greater than the liquid guiding speed of the liquid guiding structure, the atomization core is prone to dry burning and coking, which affects the service life and user experience of the aerosol generating device.

[0005] The above statements are only used to provide background technical information related to this application, and do not necessarily constitute prior art. Summary of the Invention

[0006] One of the purposes of the embodiments of this application is to provide a liquid guiding structure, an atomization core, and an aerosol generating device, which can improve the problem of dry burning and coking caused by the low liquid guiding efficiency of the liquid guiding structure.

[0007] To solve the above technical problems, the technical solution adopted in the embodiments of this application is:

[0008] In a first aspect, an embodiment of the present application provides a liquid guiding structure. One side of the liquid guiding structure along a first direction is used to arrange a heating structure. A plurality of microcavity groups are provided inside the liquid guiding structure. Each microcavity group includes a plurality of microcavities arranged along a second direction. The microcavity group has opposite first and second ends along the second direction. In the direction from the first end to the second end, at least a part of each microcavity is gradually expanded from one end close to the first end; the first direction is perpendicular to the second direction.

[0009] In some embodiments, in the direction from the first end to the second end, the microcavities are gradually expanded.

[0010] In some embodiments, the microcavity includes a first cavity and a second cavity. In the direction from the first end to the second end, the first cavity and the second cavity are sequentially distributed and connected. The first cavity is gradually expanded, and the second cavity is gradually contracted; in the second direction, the size of the first cavity is larger than that of the second cavity.

[0011] In some embodiments, the microcavity is in the shape of a water droplet or a cone.

[0012] In some embodiments, in the microcavity group, a plurality of microcavities are sequentially connected along the second direction.

[0013] In some embodiments, the liquid guiding structure includes a plurality of liquid guiding layers arranged along the first direction. At least one liquid guiding layer is a first liquid guiding layer, and at least one liquid guiding layer is a second liquid guiding layer. The microcavity group is provided inside the first liquid guiding layer.

[0014] In some embodiments, in the first direction, the liquid guiding layer on the side of the liquid guiding structure away from the heating structure is the first liquid guiding layer.

[0015] In some embodiments, the liquid guiding structure includes a plurality of first liquid guiding layers, and a second liquid guiding layer is provided between two adjacent first liquid guiding layers.

[0016] In some embodiments, in the first direction, the liquid guiding layer on the side of the liquid guiding structure close to the heating structure is the second liquid guiding layer.

[0017] In some embodiments, in the first direction, a plurality of second liquid guiding layers are formed on the side of the liquid guiding structure close to the heating structure.

[0018] In some embodiments, a plurality of microcavity groups are provided inside the first liquid guiding layer, and in the first liquid guiding layer, the plurality of microcavity groups are spaced apart along a third direction;

[0019] wherein, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

[0020] In a second aspect, an embodiment of the present application provides an atomization core, including:

[0021] a liquid guiding structure;

[0022] A heating structure is provided on one side of the liquid guiding structure along the first direction.

[0023] In some embodiments, the liquid guiding structure is a hollow structure penetrating along the second direction, the first direction is the radial direction of the liquid guiding structure, and the heating structure is provided on the inner peripheral wall of the liquid guiding structure.

[0024] In a third aspect, an aerosol generating device provided by an embodiment of the present application includes:

[0025] An atomization core;

[0026] A housing provided with an air passage, an air inlet, and an inhalation port; the atomization core is disposed inside the housing, and in the first direction, the air passage is disposed on a side of the atomization core close to the heating structure; in the second direction, the inhalation port communicates with one end of the air passage close to the second end, and the air inlet communicates with one end of the air passage close to the first end.

[0027] The beneficial effects of the liquid guiding structure, atomization core, and aerosol production device provided by the embodiments of the present application are as follows:

[0028] For the liquid guiding structure provided by the embodiments of the present application, the microcavity group inside the liquid guiding structure includes a plurality of microcavities arranged along the second direction, and in the direction from the first end to the second end of the microcavity group, at least a part of the microcavity is gradually expanded from one end close to the first end to the second end. Due to the arrangement of the plurality of microcavities in the microcavity group and the gradual expansion of the microcavity, the aerosol generating matrix located at the microcavity group can be rapidly transported from the first end to the second end under the synergistic action of the Laplace pressure gradient and the wetting gradient. With such an arrangement, when the liquid guiding structure is applied to an aerosol generating device, the first direction can be arranged horizontally, that is, the liquid guiding structure and the heating structure are generally arranged horizontally. The second direction is arranged longitudinally, and the first end is located at the bottom of the second end. In this way, under the synergistic action of the Laplace pressure gradient and the wetting gradient, the aerosol generating matrix located at the microcavity group can be rapidly transported longitudinally from the first end to the second end, specifically, from the bottom of the liquid guiding structure to the top of the liquid guiding structure longitudinally. This can improve the liquid guiding efficiency of the liquid guiding structure and solve the problem of dry burning and coking of the atomization core caused by low liquid guiding efficiency of the liquid guiding structure.

[0029] For the atomization core provided by the embodiments of the present application, by adopting the liquid guiding structure involved in the above embodiments, the liquid guiding efficiency of the atomization core can be improved to solve the problem of dry burning and coking of the atomization core.

[0030] For the aerosol generating device provided by the embodiments of the present application, by adopting the atomization core involved in the above embodiments, the liquid guiding efficiency can be improved to solve the problem of dry burning and coking.

[0031] The above description is only an overview of the technical solution of the present application. In order to better understand the technical means of the present application, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 Schematic diagram of an atomization core provided for some embodiments of the present application;

[0034] Figure 2 Schematic diagram of an atomization core provided for other embodiments of the present application;

[0035] Figure 3 For Figure 1 Cross-sectional view along A-A;

[0036] Figure 4 For Figure 3 Schematic diagram of multiple microcavities in;

[0037] Figure 5 For Figure 4 Schematic diagram of the cooperation with the aerosol generation matrix;

[0038] Figure 6 Schematic diagram of the microcavity of the liquid guiding structure provided for other embodiments of the present application;

[0039] Figure 7 Stereoscopic structure diagram of the liquid guiding structure provided for some embodiments of the present application;

[0040] Figure 8 For Figure 7 Schematic diagram of the first liquid guiding layer of the liquid guiding structure provided;

[0041] Figure 9 For Figure 8 Cross-sectional view along B-B.

[0042] Among them, the reference numerals in the drawings:

[0043] 10 - Liquid guiding structure; 20 - Heating structure; 30 - Aerosol - generating matrix; 101 - Micro - cavity group; 1011 - Micro - cavity; 10111 - First cavity; 10112 - Second cavity; 102 - First end; 103 - Second end; 1 - First liquid - guiding layer; 2 - Second liquid - guiding layer; L1 - First dimension; L2 - Second dimension; Z - First direction; Y - Second direction; X - Third direction. Detailed implementation manners

[0044] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as a limitation to the present application.

[0045] If there is no special instruction, all implementation manners and optional implementation manners of the embodiments of the present application can be combined with each other to form a new technical solution.

[0046] If there is no special instruction, all technical features and optional technical features of the embodiments of the present application can be combined with each other to form a new technical solution.

[0047] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0048] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0049] In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two. Unless otherwise specifically defined, "more than two" includes two. Correspondingly, the meaning of "multiple groups" is more than two groups, including two groups.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0051] In the description of the present application, the term "and / or" is only an association relationship describing the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: there is A, there is both A and B at the same time, and there is B. In addition, in the present application, the character " / " generally indicates that the front and back associated objects are in an "or" relationship.

[0052] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical terms "proximity" and "adjacent" refer to being close in position. For example, for three components A1, A2, and B, if the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is in proximity to B, or it can also be said that B is in proximity to A2. In other words, A2 is adjacent to B. Another example is that when there are multiple C components, the multiple C components are C1, C2... CN respectively. When one of the C components, such as C2, is closer to the B component than other C components, then B is in proximity to C2, or it can also be said that C2 is in proximity to B. In other words, C2 is adjacent to B.

[0053] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and the components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0054] The following is a detailed description in conjunction with specific drawings and embodiments:

[0055] Please refer to Figure 1 and Figure 2 together, and in conjunction with other drawings. Figure 1 is a schematic diagram of an atomizing core provided by some embodiments of the present application, Figure 2 is a schematic diagram of an atomizing core provided by other embodiments of the present application. One side of the liquid guiding structure 10 provided by the embodiments of the present application along the first direction Z is used to arrange the heating structure 20.

[0056] It should be noted that the liquid guiding structure 10 is used in cooperation with the heating structure 20, and the liquid guiding structure 10 and the heating structure 20 form an atomization core. Among them, the liquid guiding structure 10 refers to a structure having the performance of conducting the aerosol generating matrix 30. The heating structure 20 is a component having electrical conductivity, specifically a resistive load, so that the heating structure 20 can be energized, and the heating structure 20 can generate heat when energized to generate heat. During operation, the aerosol generating matrix 30 is transmitted to the heating structure 20 under the action of the liquid guiding structure 10, and the heat generated by the heating structure 20 heats the aerosol generating matrix 30, so that the aerosol generating matrix 30 forms an aerosol in the atomization core.

[0057] The heating structure 20 is disposed on one side of the liquid guiding structure 10 in the first direction Z. Among them, the first direction Z is the general distribution direction of the heating structure 20 and the liquid guiding structure 10, which is the double-arrow direction. As Figure 1 and Figure 2 shown, the first direction Z is the thickness direction of the liquid guiding structure 10.

[0058] In some possible designs, as Figure 1 shown, the liquid guiding structure 10 is a cylindrical structure with a hollow design, the liquid guiding structure 10 is arranged through along the axial direction, and the heating structure 20 is disposed on the inner peripheral wall of the liquid guiding structure 10. Among them, the thickness direction of the liquid guiding structure 10 is the radial direction of the liquid guiding structure 10, that is, the first direction Z is the radial direction of the liquid guiding structure 10. The two opposite side surfaces of the liquid guiding structure 10 along the first direction Z are both cylindrical surfaces.

[0059] Alternatively, in some other possible designs, as Figure 2 shown, the liquid guiding structure 10 is a flat sheet structure, and the two opposite side surfaces of the liquid guiding structure 10 along the first direction Z are both planes.

[0060] Please refer to Figures 3 to 6 together, and in combination with other drawings. Among them, Figure 3 is Figure 1 a cross-sectional view along A-A, Figure 4 is Figure 3 a schematic diagram of a plurality of microcavities 1011 in Figure 5 is Figure 4 a schematic diagram of the cooperation with the aerosol generating matrix 30, Figure 6 is a schematic diagram of the microcavity 1011 of the liquid guiding structure 10 provided by some other embodiments of the present application. A plurality of microcavity groups 101 are provided inside the liquid guiding structure 10. The microcavity group 101 includes a plurality of microcavities 1011 arranged along the second direction Y. The microcavity group 101 has opposite first ends 102 and second ends 103 along the second direction Y. In the direction from the first end 102 to the second end 103, at least part of each microcavity 1011 is gradually expanded from one end close to the first end 102. Among them, the first direction Z is perpendicular to the second direction Y.

[0061] The microcavity 1011 is a cavity formed inside the liquid guiding structure 10, and a plurality of microcavities 1011 arranged in sequence along the second direction Y constitute the microcavity group 101. Among them, the second direction Y is the approximate distribution direction of the plurality of microcavities 1011 in the microcavity group 101, which is the direction of the double arrow. In the microcavity group 101, the plurality of microcavities 1011 are arranged along the second direction Y, which means that the plurality of microcavities 1011 are approximately distributed along the second direction Y. Among them, the plurality of microcavities 1011 can be linearly arranged along the second direction Y, can be bent along the second direction Y, or can be inclined with respect to the second direction Y. Among them, the liquid guiding structure 10 can be manufactured by, but not limited to, an embossing process to form the microcavity 1011.

[0062] The microcavity group 101 has opposite first end 102 and second end 103 along the second direction Y, which means that among the two opposite ends of the microcavity group 101 along the second direction Y, one end is the first end 102 and the other end is the second end 103. Among them, the first end 102 and the second end 103 are virtual positions at both ends of the microcavity group 101. The direction in which the first end 102 points to the second end 103 refers to the approximate direction in which the first end 102 points to the second end 103 along the extension trend of the microcavity group 101 along the second direction Y, which is a unidirectional direction.

[0063] In the direction in which the first end 102 points to the second end 103, at least a part of the microcavity 1011 is gradually expanded from one end close to the first end 102, which means that in the direction in which the first end 102 points to the second end 103, at least a part of the microcavity 1011 is gradually expanded from one end close to the first end 102 towards the second end 103, that is, at least a part of the space of the microcavity 1011 is gradually increased from one end close to the first end 102 towards the second end 103. Among them, as Figures 3 to 5 shown, in the direction in which the first end 102 points to the second end 103, the microcavity 1011 is gradually expanded and extended from one end close to the first end 102 to the end of the microcavity 1011 close to the second end 103. Or, as Figure 6 shown, in the direction in which the first end 102 points to the second end 103, a part of the microcavity 1011 is gradually expanded from one end close to the first end 102 towards the second end 103.

[0064] It should be noted that the liquid guiding structure 10 can be a capillary structure. Specifically, the liquid guiding structure 10 has voids inside, and the aerosol generating matrix 30 can be transported into the voids inside the liquid guiding structure 10 and can be transported under the capillary action of the liquid guiding structure 10.

[0065] Among them, the aerosol generating matrix 30 can be transported approximately along the first direction Z under the capillary action of the liquid guiding structure 10, so that it can be transported to the heating structure 20.

[0066] Among them, a plurality of microcavity groups 101 are formed inside the liquid guiding structure 10, and the microcavity group 101 includes a plurality of microcavities 1011, so that a plurality of microcavities 1011 are formed inside the liquid guiding structure 10. The microcavities 1011 can be used to store the aerosol generating matrix 30, which can increase the space inside the liquid guiding structure 10 for storing the aerosol generating matrix 30, facilitate storing more aerosol generating matrix 30 inside the liquid guiding structure 10, and thus help improve the transmission efficiency of the aerosol generating matrix 30 inside the liquid guiding structure 10.

[0067] In the liquid guiding structure 10 provided by the embodiment of the present application, the microcavity group 101 inside the liquid guiding structure 10 includes a plurality of microcavities 1011 arranged along the second direction Y, and at least a part of each microcavity 1011 is tapered from one end close to the first end 102 to the second end 103 in the direction from the first end 102 to the second end 103 of the microcavity group 101. Based on the arrangement of the plurality of microcavities 1011 in the microcavity group 101 and the tapered arrangement of the microcavities 1011, the aerosol generating matrix 30 located at the microcavity group 101 can be quickly transmitted from the first end 102 to the second end 103 under the combined action of the Laplace pressure gradient and the wetting gradient.

[0068] Specifically, based on the arrangement of the plurality of microcavities 1011 in the microcavity group 101 and the tapered arrangement of the microcavities 1011, the aerosol generating matrix 30 located at the microcavity group 101 is subjected to a Laplace pressure difference and a wetting difference. On the one hand, the aerosol generating matrix 30 in the microcavity 1011 is transmitted from the smaller space in the microcavity 1011 to the larger space. On the other hand, in the second direction Y, a solid part of the liquid guiding structure 10 is provided between two adjacent microcavities 1011, so that the solid part of the liquid guiding structure 10 between two adjacent microcavities 1011 can transmit the aerosol generating matrix 30 through capillary force, which is conducive to the transmission of the aerosol generating matrix 30 between two adjacent microcavities 1011. In this way, under the action of the Laplace pressure difference and the wetting difference, it is conducive to the rapid reconstruction of the liquid surface of the aerosol generating matrix 30 located at the microcavity group 101, and it is conducive to the aerosol generating matrix 30 to alternately pass through the inside of the microcavities 1011 and the solid part between the microcavities 1011 generally along the second direction Y. In this way, the aerosol generating matrix 30 can quickly achieve continuous and directional long-distance transmission, so that the aerosol generating matrix 30 can be quickly transmitted in the direction from the first end 102 to the second end 103. Among them, as Figure 6 shown, the arrow indicates the general transmission direction of the aerosol generating matrix 30.

[0069] With such an arrangement, when the liquid guiding structure 10 is applied to an aerosol generating device, the first direction Z can be arranged horizontally, that is, the liquid guiding structure 10 and the heating structure 20 are arranged substantially horizontally. The second direction Y is arranged longitudinally, and the first end 102 is located at the bottom of the second end 103. In this way, under the combined action of the Laplace pressure gradient and the wetting gradient, the aerosol generating matrix 30 located at the microcavity group 101 can be rapidly transported longitudinally from the first end 102 towards the second end 103, specifically, rapidly transported longitudinally from the bottom of the liquid guiding structure 10 to the top of the liquid guiding structure 10. In this way, the liquid guiding efficiency of the liquid guiding structure 10 can be improved, and the problem of dry burning and core caking caused by the low liquid guiding efficiency of the liquid guiding structure 10 can be solved.

[0070] In some embodiments, please refer to Figures 3 to 5 , and in combination with other drawings. In the direction from the first end 102 to the second end 103, the microcavity 1011 is arranged to gradually expand.

[0071] It can be understood that in the direction from the first end 102 to the second end 103, the microcavity 1011 extends gradually from one end close to the first end 102 to the end close to the second end 103.

[0072] With such an arrangement, it is beneficial for the aerosol generating matrix 30 in the microcavity 1011 to be rapidly transported from the first end 102 towards the second end 103 under the combined action of the Laplace pressure gradient and the wetting gradient, improving the longitudinal transport efficiency of the liquid guiding structure 10.

[0073] In some embodiments, please refer to Figure 6 , and in combination with other drawings. The microcavity 1011 includes a first cavity 10111 and a second cavity 10112. In the direction from the first end 102 to the second end 103, the first cavity 10111 and the second cavity 10112 are distributed in sequence and communicate with each other. In the direction from the first end 102 to the second end 103, the first cavity 10111 is arranged to gradually expand. In the direction from the first end 102 to the second end 103, the second cavity 10112 is arranged to gradually contract. In the second direction Y, the size of the first cavity 10111 is larger than that of the second cavity 10112.

[0074] The first cavity 10111 and the second cavity 10112 are two partial cavities of the microcavity 1011. It can be understood that in the direction from the first end 102 to the second end 103, the microcavity 1011 first expands gradually and then contracts gradually.

[0075] In the second direction Y, the size of the first cavity 10111 is larger than that of the second cavity 10112, such that in the second direction Y, there is more of the gradually expanding portion in the microcavity 1011 than the gradually contracting portion, that is, most of the microcavity 1011 is gradually expanded in the direction from the first end 102 to the second end 103. Also, the slope of the gradual expansion of the first cavity 10111 is smaller than the slope of the gradual contraction of the second cavity 10112. Wherein, in the second direction Y, the size of the first cavity 10111 is the first size L1, the size of the second cavity 10112 is the second size L2, and the first size L1 is greater than the second size L2.

[0076] In a cross-section parallel to the second direction Y, as Figure 6 shown, the extension line of the outer contour of the first cavity 10111 can form a first included angle, and the outer contour of the second cavity 10112 can form a second included angle, and the first included angle is less than the second included angle.

[0077] In this way, it is beneficial for the aerosol generating matrix 30 in the microcavity 1011 to be transmitted from the first cavity 10111 to the second cavity 10112, and then to be transmitted through the solid portion between adjacent two microcavities 1011 by the liquid guiding structure 10 to the first cavity 10111 of the adjacent microcavity 1011, so as to improve the transmission efficiency of the aerosol generating matrix 30 longitudinally from the first end 102 towards the second end 103, and to improve the liquid guiding efficiency of the liquid guiding structure 10.

[0078] In some embodiments, please refer to Figures 3 to 6 together with other drawings. The microcavity 1011 is in the shape of a water droplet or a cone.

[0079] As Figures 3 to 5 shown, the microcavity 1011 is approximately in the shape of a cone. Among them, the microcavity 1011 can be approximately in the shape of a pyramid or approximately in the shape of a cone.

[0080] As Figure 6 shown, the microcavity 1011 is approximately in the shape of a water droplet.

[0081] With such a setting, the microcavity 1011 has various alternative forms, so as to improve the longitudinal liquid guiding efficiency of the liquid guiding structure 10. This is beneficial for the processing of the liquid guiding structure 10.

[0082] In some embodiments, please refer to Figures 3 to 5 together with other drawings. In the microcavity group 101, multiple microcavities 1011 are sequentially connected along the second direction Y.

[0083] The microcavities 1011 in the microcavity group 101 are connected along the second direction Y, which facilitates the transmission of the aerosol generation matrix 30 in the second direction Y, thereby facilitating the improvement of the liquid guiding efficiency of the liquid guiding structure 10 in the longitudinal direction from the first end 102 to the second end 103.

[0084] In some embodiments, please refer to Figure 7 , and in combination with other drawings. Among them, Figure 7 is a three-dimensional structure diagram of the liquid guiding structure 10 provided by some embodiments of the present application. The liquid guiding structure 10 includes a plurality of liquid guiding layers arranged along the first direction Z. At least one liquid guiding layer is the first liquid guiding layer 1, and at least one liquid guiding layer is the second liquid guiding layer 2. A microcavity group 101 is provided inside the first liquid guiding layer 1.

[0085] It should be noted here that in the atomization core, as Figure 1 shown, when the liquid guiding structure 10 is a cylindrical structure with a hollow design, Figure 7 is an unfolded schematic diagram of the liquid guiding structure 10, that is, a state diagram of the liquid guiding structure 10 before being wound into a cylindrical structure.

[0086] It can be understood that the first direction Z is the stacking direction of the plurality of liquid guiding layers and is also the thickness direction of each liquid guiding layer.

[0087] Among them, each liquid guiding layer can be a capillary structure. Specifically, the first liquid guiding layer 1 is a capillary structure with the above-mentioned microcavities 1011 provided inside; the second liquid guiding layer 2 is a conventional capillary structure without the above-mentioned microcavities 1011.

[0088] Since both the first liquid guiding layer 1 and the second liquid guiding layer 2 are capillary structures, the first liquid guiding layer 1 and the second liquid guiding layer 2 can both transmit the aerosol generation matrix 30 along the first direction Z by capillary force. Based on the fact that the above-mentioned microcavities 1011 are provided inside the first liquid guiding layer 1, the first liquid guiding layer 1 can effectively and quickly transmit the aerosol generation matrix 30 from the first end 102 to the second end 103 along the second direction Y. Based on this, the first liquid guiding layer 1 and the second liquid guiding layer 2 cooperate to work, which can improve the transmission efficiency of the aerosol generation matrix 30 in the transverse and longitudinal directions, thereby improving the liquid guiding efficiency of the liquid guiding structure 10 and improving the problem of dry burning and coking of the core.

[0089] In some embodiments, the liquid guiding layer can be, but is not limited to, liquid guiding cotton, and the material of the liquid guiding layer can be at least one of cotton fiber, hemp fiber, and viscose fiber.

[0090] In some embodiments, please refer to Figure 3 and Figure 7 , and in combination with other drawings. In the first direction Z, the liquid guiding layer on the side of the liquid guiding structure 10 away from the heating structure 20 is the first liquid guiding layer 1.

[0091] Understandably, in the first direction Z, among the multiple liquid guiding layers, the liquid guiding layer farthest from the heating structure 20 is the first liquid guiding layer 1, and the microcavity 1011 is provided inside it.

[0092] Since the microcavity 1011 is formed inside the first liquid guiding layer 1, and the second liquid guiding layer 2 is not provided with the microcavity 1011, compared with the second liquid guiding layer 2, the first liquid guiding layer 1 has a larger space inside to accommodate the aerosol generating matrix 30. In this way, it is beneficial for the aerosol generating matrix 30 outside the liquid guiding structure 10 to quickly enter the liquid guiding structure 10 through the first liquid guiding layer 1, so as to facilitate the rapid transmission of the aerosol generating matrix 30 to the heating structure 20 under the transmission of the liquid guiding structure 10, thereby improving the problem of dry burning and coking of the core.

[0093] In some embodiments, please refer to Figure 3 and Figure 7 in conjunction with other drawings. The liquid guiding structure 10 includes multiple first liquid guiding layers 1, and a second liquid guiding layer 2 is provided between two adjacent first liquid guiding layers 1.

[0094] Understandably, the multiple first liquid guiding layers 1 are arranged at intervals in the first direction Z, and a second liquid guiding layer 2 is provided between two adjacent first liquid guiding layers 1 in the first direction Z.

[0095] With such an arrangement, the first liquid guiding layer 1 and the adjacent second liquid guiding layer 2 can cooperate to transmit the aerosol generating matrix 30, enabling the aerosol generating matrix 30 to be quickly transmitted longitudinally and transversely, thereby improving the liquid guiding efficiency of the liquid guiding structure 10.

[0096] In some embodiments, please refer to Figure 3 and Figure 7 in conjunction with other drawings. In the first direction Z, the liquid guiding layer of the liquid guiding structure 10 close to the heating structure 20 is the second liquid guiding layer 2.

[0097] Understandably, in the first direction Z, among the multiple liquid guiding layers, the liquid guiding layer closest to the heating structure 20 is the second liquid guiding layer 2.

[0098] Since the second liquid guiding layer 2 is not provided with the microcavity 1011, the second liquid guiding layer 2 on the side of the liquid guiding structure 10 close to the heating structure 20 can exert a certain blocking effect on the aerosol generating matrix 30 in the microcavity 1011 of the first liquid guiding layer 1, thereby improving the problem of the aerosol generating matrix 30 being sucked or leaked before being atomized into aerosol.

[0099] In some embodiments, please refer to Figure 3 and Figure 7 in conjunction with other drawings. On the side of the liquid guiding structure 10 close to the heating structure 20 in the first direction Z, multiple second liquid guiding layers 2 are formed.

[0100] Understandably, in the first direction Z, among the multiple liquid guiding layers, at least two liquid guiding layers closest to the heating structure 20 are both the second liquid guiding layers 2.

[0101] With such a setting, on the one hand, at least two second liquid guiding layers 2 closest to the heating structure 20 can both block the aerosol generating matrix 30 in the microcavity 1011, effectively improving the problem of the aerosol generating matrix 30 being sucked or leaked before being atomized into aerosol. On the other hand, on the path of the aerosol generating matrix 30 being transmitted towards the heating structure 20 through the liquid guiding structure 10, after the aerosol generating matrix 30 efficiently performs longitudinal transmission under the action of the first liquid guiding layer 1, it can then efficiently perform lateral transmission through at least two second liquid guiding layers 2, enabling the aerosol generating matrix 30 to be effectively and evenly transmitted onto the heating structure 20, improving the problem of dry burning and coking of the core.

[0102] In some embodiments, please refer to Figure 8 and Figure 9 together, and in combination with other drawings. Among them, Figure 8 is Figure 7 a schematic diagram of the first liquid guiding layer 1 of the liquid guiding structure 10 provided, Figure 9 is Figure 8 a cross-sectional view along B - B. A plurality of microcavity groups 101 are provided inside the first liquid guiding layer 1, and in the first liquid guiding layer 1, the plurality of microcavity groups 101 are arranged at intervals in the third direction X. Among them, the third direction X is perpendicular to the first direction Z, and the third direction X is perpendicular to the second direction Y.

[0103] Among them, in the atomizing core, as Figure 1 shown, when the liquid guiding structure 10 is a hollow cylindrical structure, the third direction X is the circumferential direction of the liquid guiding structure 10.

[0104] Among them, in the atomizing core, as Figure 2 shown, when both opposite side surfaces of the liquid guiding structure 10 along the first direction Z are planes, the second direction Y and the third direction X can be the width direction and the length direction of the liquid guiding structure 10 respectively.

[0105] By forming multiple groups of spaced microcavity groups 101 inside the first liquid guiding layer 1, the first liquid guiding layer 1 can effectively improve the longitudinal transmission efficiency of the aerosol generating matrix 30 through the multiple groups of microcavity groups 101, so as to improve the liquid guiding efficiency of the liquid guiding structure 10.

[0106] As an example, as Figure 3 and Figure 7As shown, the liquid guiding structure 10 includes five liquid guiding layers. The five liquid guiding layers include two first liquid guiding layers 1 and three second liquid guiding layers 2. In the first direction Z, among the five liquid guiding layers, the two liquid guiding layers closest to the heating structure 20 are the second liquid guiding layers 2, and the liquid guiding layer farthest from the heating structure 20 is the first liquid guiding layer 1. Moreover, a second liquid guiding layer 2 is also provided between two adjacent first liquid guiding layers 1.

[0107] Please refer to Figures 1 to 3 , and in combination with other drawings. The atomization core provided by the embodiment of the present application includes a liquid guiding structure 10 and a heating structure 20. The heating structure 20 is arranged on one side of the liquid guiding structure 10 along the first direction Z. Among them, the liquid guiding structure 10 in this embodiment is the same as the liquid guiding structures 10 in the above embodiments. For specific details, please refer to the relevant descriptions of the liquid guiding structure 10 in the above embodiments, which will not be elaborated here.

[0108] For the atomization core provided by the embodiment of the present application, by adopting the liquid guiding structure 10 involved in the above embodiments, the liquid guiding efficiency of the atomization core can be improved to solve the problem of dry burning and core burning of the atomization core.

[0109] In some embodiments, please refer to Figure 1 and Figure 3 , and in combination with other drawings. The liquid guiding structure 10 is a hollow structure that penetrates along the second direction Y. The first direction Z is the radial direction of the liquid guiding structure 10, and the heating structure 20 is arranged on the inner peripheral wall of the liquid guiding structure 10.

[0110] With such an arrangement, the heating structure 20 can be relatively stably fixed on the liquid guiding structure 10, which is beneficial for the liquid guiding structure 10 to quickly transfer the aerosol generation matrix 30 to the heating structure 20.

[0111] The aerosol generating device provided by the embodiment of the present application includes an atomization core and a housing. The housing is provided with an air passage, an air inlet, and an air suction port. The atomization core is arranged inside the housing. In the first direction Z, the air passage is arranged on the side of the atomization core close to the heating structure 20. In the second direction Y, the air suction port is communicated with one end of the air passage close to the second end 103, and the air inlet is communicated with one end of the air passage close to the first end 102. Among them, the atomization core in this embodiment is the same as the atomization cores in the above embodiments. For specific details, please refer to the relevant descriptions of the atomization core in the above embodiments, which will not be elaborated here.

[0112] The housing refers to the outer shell structure of the aerosol generating device, and the air passage is arranged inside the housing. Among them, the air passage refers to a channel for transmitting the aerosol formed by atomizing the aerosol generation matrix 30.

[0113] In the first direction Z, the airway is provided on the side of the atomization core close to the heating structure 20. After the aerosol-forming substrate 30 is atomized into aerosol under the heating of the heating structure 20, the aerosol can be transmitted into the airway. Specifically, during operation, the aerosol-forming substrate 30 can be transmitted onto the heating structure 20 through the liquid guiding structure 10, and is atomized into aerosol under the heating of the heating structure 20. The aerosol flows into the airway. The outside air flows into the airway through the air inlet, and the aerosol in the airway flows with the air and flows out of the aerosol generating device through the suction port.

[0114] It should be noted that the airway extends generally along the second direction Y. Among the two opposite ends of the airway along the second direction Y, one end is generally located at the bottom of the airway and communicates with the air inlet; the other end is generally located at the top of the airway and communicates with the suction port.

[0115] In the second direction Y, the suction port communicates with one end of the airway close to the second end 103, and the air inlet communicates with one end of the airway close to the first end 102, so that the second direction Y is generally the vertical direction, and the first end 102 is located below the second end 103.

[0116] The liquid guiding structure 10 can improve the transmission efficiency of the aerosol-forming substrate 30 from the first end 102 towards the second end 103. When the liquid guiding structure 10 is applied to the aerosol-forming substrate 30, it is beneficial to improve the transmission efficiency of the aerosol-forming substrate 30 along the longitudinal direction from the bottom of the liquid guiding structure 10 towards the top of the liquid guiding structure 10, that is, the liquid guiding efficiency of the liquid guiding structure 10 from the bottom towards the top along the longitudinal direction can be improved.

[0117] The aerosol generating device provided by the embodiment of the present application can improve the liquid guiding efficiency and solve the problem of dry burning and coking of the core by adopting the atomization core involved in the above embodiments.

[0118] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A liquid conducting structure, characterized in that: One side of the liquid-conducting structure along the first direction is used to arrange the heating structure, and a plurality of microcavity groups are arranged inside the liquid-conducting structure, and the microcavity group includes a plurality of microcavities arranged along the second direction, and the microcavity group has a first end and a second end relative to each other along the second direction, and in the direction from the first end to the second end, at least a portion of each of the microcavities is gradually expanded from an end close to the first end; the first direction is perpendicular to the second direction.

2. The liquid guiding structure according to claim 1, characterized in that: In a direction from the first end to the second end, the microcavity is gradually expanded.

3. The liquid guiding structure according to claim 1, characterized in that: The microcavity includes a first cavity and a second cavity. In the direction from the first end to the second end, the first cavity and the second cavity are distributed in sequence and connected. The first cavity is gradually expanded and the second cavity is gradually contracted. In the second direction, the size of the first cavity is larger than the size of the second cavity.

4. The liquid guiding structure according to any one of claims 1 to 3, characterized in that: The microcavity is in a water drop shape or a cone shape.

5. The liquid guiding structure according to any one of claims 1 to 3, characterized in that: In the microcavity group, a plurality of the microcavities are sequentially connected along the second direction.

6. The liquid guiding structure according to any one of claims 1 to 3, characterized in that: The liquid-conducting structure comprises a plurality of liquid-conducting layers arranged along the first direction, at least one of the liquid-conducting layers is a first liquid-conducting layer, at least one of the liquid-conducting layers is a second liquid-conducting layer, and the microcavity group is disposed inside the first liquid-conducting layer.

7. The liquid guiding structure according to claim 6, characterized in that: In the first direction, the liquid conducting layer on a side of the liquid conducting structure away from the heating structure is the first liquid conducting layer.

8. The liquid guiding structure according to claim 6, characterized in that: The liquid-conducting structure includes a plurality of the first liquid-conducting layers, and the second liquid-conducting layer is disposed between two adjacent first liquid-conducting layers.

9. The liquid guiding structure according to claim 6, characterized in that: In the first direction, the liquid conducting layer on a side of the liquid conducting structure close to the heating structure is the second liquid conducting layer.

10. The liquid guiding structure according to claim 9, characterized in that: In the first direction, a plurality of second liquid guiding layers are formed on a side of the liquid guiding structure close to the heating structure.

11. The liquid conducting structure according to claim 6, characterized in that: A plurality of the microcavity groups are arranged inside the first liquid-conducting layer, and in the first liquid-conducting layer, the plurality of the microcavity groups are arranged at intervals along the third direction; The third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

12. An atomizer core, characterized in that: include: The liquid guiding structure according to any one of claims 1 to 11; The heating structure is arranged on one side of the liquid guiding structure along the first direction.

13. The atomizer core according to claim 12, characterized in that: The liquid guiding structure is a hollow structure penetrating along the second direction, the first direction is the radial direction of the liquid guiding structure, and the heating structure is arranged on the inner peripheral wall of the liquid guiding structure.

14. An aerosol generating device, characterized in that: include: The atomizer core according to claim 12 or 13; The shell is provided with an air duct, an air inlet and an air suction port; the atomizer core is arranged in the shell, and in the first direction, the air duct is arranged on a side of the atomizer core close to the heating structure; in the second direction, the air suction port is connected to an end of the air duct close to the second end, and the air inlet is connected to an end of the air duct close to the first end.

Images