CN219939729U - Heating component, atomizer and electronic atomization device - Google Patents

Abstract

The utility model discloses a heating component, an atomizer and an electronic atomization device, wherein the heating component comprises a substrate and a heating film; the base body comprises a liquid suction surface and an atomization surface which are oppositely arranged, and a plurality of liquid guide holes penetrating through the liquid suction surface and the atomization surface are formed in the base body; the heating film is arranged on the atomization surface, and the liquid guide hole extends to the heating film and penetrates through the heating film; the current flowing direction of the heating film is defined as a first direction, the current flowing direction perpendicular to the heating film is defined as a second direction, the arrangement density of the liquid guide holes in the first direction is greater than the arrangement density of the liquid guide holes in the second direction, and the stability of the heating film is ensured while the porosity of the matrix is increased.

Description

Heating component, atomizer and electronic atomization device

Technical Field

The utility model relates to the technical field of electronic atomization, in particular to a heating component, an atomizer and an electronic atomization device.

Background

The electronic atomization device consists of a heating component, a battery, a control circuit and the like, wherein the heating component is used as a core element of the electronic atomization device, and the characteristics of the heating component determine the atomization effect and the use experience of the electronic atomization device.

A common atomizing mode of the existing heating component is resistance heating. Specifically, the heating component comprises a substrate and a heating film arranged on the surface of the substrate; wherein the substrate is provided with through holes for guiding the aerosol-generating substrate. In order to increase the porosity of the heat generating component, increasing the density of the through holes is one of the most straightforward methods. However, the existing uniform pore-forming method increases the pore density and simultaneously reduces the distance between the pores, thereby increasing the resistance of the heating film, reducing the stability of the heating film and greatly increasing the failure condition of the heating component in the working process.

Disclosure of Invention

The heating component, the atomizer and the electronic atomization device provided by the utility model can improve the stability of the heating film while improving the hole density.

In order to solve the technical problems, the first technical scheme provided by the utility model is as follows: providing a heat generating component applied to an electronic atomizing device for atomizing an aerosol-generating substrate, the heat generating component comprising a substrate and a heat generating film; the substrate comprises a liquid suction surface and an atomization surface which are oppositely arranged; the base body is provided with a plurality of liquid guide holes penetrating through the liquid suction surface and the atomization surface; the heating film is arranged on the atomization surface; the liquid guide hole extends to the heating film and penetrates through the heating film; the current flowing direction of the heating film is defined as a first direction, and the current flowing direction perpendicular to the heating film is defined as a second direction; the arrangement density of the liquid guide holes in the first direction is greater than the arrangement density of the liquid guide holes in the second direction.

In one embodiment, the heat generating film includes a heat generating portion, a first electrode, and a second electrode; the heating part is in a strip shape and extends linearly along the first direction; the first electrode and the second electrode are respectively arranged at two opposite ends of the heating part along the first direction.

In an embodiment, the plurality of liquid guiding holes are arranged in a plurality of rows and a plurality of columns, the row direction is parallel to the first direction, and the column direction is parallel to the second direction; the liquid guide holes of each row are arranged at intervals, and the liquid guide holes of each column are arranged at intervals.

In one embodiment, the aperture of the liquid guiding hole is more than or equal to 20 μm and less than or equal to 50 μm; the center distance between the adjacent liquid guide holes in each row is less than or equal to 100 mu m; and/or the center distance between the adjacent liquid guide holes in each row is more than or equal to 40 mu m and less than or equal to 100 mu m.

In an embodiment, the plurality of liquid guiding holes are arranged in a plurality of rows and a plurality of columns, the row direction is parallel to the first direction, and the column direction is parallel to the second direction; at least two of the liquid guide holes in each row are communicated with each other; a plurality of liquid guide holes in each row are arranged at intervals.

In an embodiment, at least two ports of the plurality of liquid guiding holes in each row, which are located on the atomizing surface, overlap each other.

In one embodiment, the plurality of liquid guiding holes in each row are divided into a plurality of groups of liquid guiding holes; each group of liquid guide holes comprises at least two liquid guide holes, and all liquid guide holes in each group of liquid guide holes are mutually communicated.

In an embodiment, the number of the liquid guide holes in each group of the liquid guide holes is the same; and/or the center distances of holes between adjacent liquid guide holes in each group of liquid guide holes are the same; and/or the liquid guide holes of each row are divided into a plurality of groups of liquid guide holes, and the distances between two adjacent groups of liquid guide holes are the same.

In one embodiment, the aperture of the liquid guiding hole is more than or equal to 20 μm and less than or equal to 50 μm; the liquid guide holes in each row are divided into a plurality of groups of liquid guide holes, and the center distance between the adjacent liquid guide holes is less than or equal to 100 mu m; and/or the center distance between the adjacent liquid guide holes in each row is more than or equal to 40 mu m and less than or equal to 100 mu m.

In one embodiment, the substrate is a dense substrate or a porous substrate.

In one embodiment, the substrate is a dense substrate, and the substrate is at least one of glass and dense ceramic; or alternatively, the first and second heat exchangers may be,

the matrix is a porous matrix, and the material of the matrix is porous ceramic.

In one embodiment, the substrate has a thickness of 0.2mm to 2.5mm.

In order to solve the technical problems, a second technical scheme provided by the utility model is as follows: providing an atomizer comprising a liquid storage cavity and a heating component; the reservoir is for storing an aerosol-generating substrate; the heat generating component is in fluid communication with the reservoir, the heat generating component for atomizing the aerosol-generating substrate; the heating component is any one of the heating components.

In order to solve the technical problems, a third technical scheme provided by the utility model is as follows: there is provided an electronic atomizing device comprising: the atomizer and the host machine are described above; the host is used for providing electric energy for the operation of the heating component of the atomizer and controlling the heating component of the atomizer to atomize the aerosol generating substrate.

The utility model has the beneficial effects that: different from the prior art, the utility model discloses a heating component, an atomizer and an electronic atomization device; the heating component comprises a substrate and a heating film; the base body comprises a liquid suction surface and an atomization surface which are oppositely arranged, and a plurality of liquid guide holes penetrating through the liquid suction surface and the atomization surface are formed in the base body; the heating film is arranged on the atomization surface, and the liquid guide hole extends to the heating film and penetrates through the heating film; the current flowing direction of the heating film is defined as a first direction, the current flowing direction perpendicular to the heating film is defined as a second direction, the arrangement density of the liquid guide holes in the first direction is greater than the arrangement density of the liquid guide holes in the second direction, and the stability of the heating film is ensured while the porosity of the matrix is increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of an electronic atomizing device according to the present utility model;

FIG. 2 is a schematic view of a nebulizer according to an embodiment of the utility model;

FIG. 3 is a schematic diagram of a heat generating component according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of the heat-generating component shown in FIG. 3, taken along line A-A;

FIG. 5a is a schematic view of a partial structure of an embodiment of a base of the heat-generating component shown in FIG. 3;

FIG. 5B is a schematic cross-sectional view of the substrate shown in FIG. 5a along line B-B;

FIG. 6a is a schematic view of a partial structure of another embodiment of a base of the heat-generating component shown in FIG. 3;

FIG. 6b is a schematic cross-sectional view of the substrate shown in FIG. 6a along line C-C;

FIG. 7a is a schematic view of a partial structure of a further embodiment of a base of the heat-generating component shown in FIG. 3;

FIG. 7b is a schematic cross-sectional view of the substrate shown in FIG. 7a along line D-D;

FIG. 8a is a schematic view of a partial structure of a further embodiment of a base of the heat-generating component shown in FIG. 3;

FIG. 8b is a schematic cross-sectional view of the substrate shown in FIG. 8a along line E-E;

FIG. 9 is a graph showing comparison of current density distribution of the first, second and third test pieces;

fig. 10 is a graph comparing joule heating profiles of the first experimental piece, the second experimental piece, and the third experimental piece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present utility model.

The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may include at least one such feature, either explicitly or implicitly. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indication is changed accordingly. The terms "comprising" and "having" and any variations thereof in embodiments of the present utility model are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present utility model will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic atomization device according to an embodiment of the utility model.

In the present embodiment, an electronic atomizing device 100 is provided. The electronic atomizing device 100 may be used for atomizing an aerosol-generating substrate. The electronic atomizing device 100 includes an atomizer 1 and a main body 2 electrically connected to each other.

Wherein the atomizer 1 is for storing an aerosol-generating substrate and atomizing the aerosol-generating substrate to form an aerosol for inhalation by a user. The atomizer 1 is particularly useful in different fields, such as medical, cosmetic, leisure, and the like. In one embodiment, the atomizer 1 may be used in an electronic aerosolization device for atomizing an aerosol-generating substrate and generating an aerosol for inhalation by a smoker, the following embodiments taking this leisure inhalation as an example.

The specific structure and function of the atomizer 1 can be referred to as the specific structure and function of the atomizer 1 according to the following embodiments, and the same or similar technical effects can be achieved, which are not described herein.

The host 2 includes a battery (not shown) and a controller (not shown). The battery is used to provide electrical energy for the operation of the atomizer 1 to enable the atomizer 1 to atomize an aerosol-generating substrate to form an aerosol; the controller is used to control the operation of the atomizer 1, i.e. to control the atomizer 1 to atomize the aerosol-generating substrate. The host 2 also includes other components such as a battery holder, an airflow sensor, and the like.

The atomizer 1 and the host machine 2 can be integrally arranged, can be detachably connected, and can be designed according to specific needs.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an atomizer according to an embodiment of the utility model.

The atomizer 1 comprises a housing 10, a heating assembly 11, and an atomizing base 12. The atomizing base 12 has a mounting cavity (not shown) in which the heating element 11 is disposed; the heating element 11 is arranged in the housing 10 together with the atomizing base 12. The housing 10 is formed with a mist outlet channel 13, and the inner surface of the housing 10, the outer surface of the mist outlet channel 13 and the top surface of the mist outlet seat 12 cooperate to form a liquid storage cavity 14, the liquid storage cavity 14 being for storing a liquid aerosol-generating substrate. Wherein the heating component 11 is electrically connected with the host 2 for atomizing the aerosol-generating substrate to generate an aerosol.

The atomizing base 12 comprises an upper base 121 and a lower base 122, and the upper base 121 and the lower base 122 are matched to form a mounting cavity; the surface of the heating element 11 facing away from the liquid storage cavity 14 cooperates with the cavity wall of the mounting cavity to form an atomizing cavity 120. The upper seat 121 is provided with a lower liquid channel 1211; the aerosol-generating substrate channel drain channel 1211 within the reservoir chamber 14 flows into the heat-generating component 11, i.e., the heat-generating component 11 is in fluid communication with the reservoir chamber 14. The lower seat 122 is provided with an air inlet channel 15, external air enters the atomization cavity 120 through the air inlet channel 15, atomized aerosol carrying the heating component 11 flows to the mist outlet channel 13, and a user sucks the aerosol through a port of the mist outlet channel 13.

Referring to fig. 3-8B, fig. 3 is a schematic structural view of a heat generating component according to an embodiment of the present utility model, fig. 4 is a schematic sectional view of the heat generating component shown in fig. 3 along line A-A, fig. 5a is a schematic sectional view of a substrate of an embodiment of the heat generating component shown in fig. 3, fig. 5B is a schematic sectional view of a substrate of an embodiment of the heat generating component shown in fig. 5a along line B-B, fig. 6a is a schematic sectional view of a substrate of an embodiment of the heat generating component shown in fig. 3, fig. 6B is a schematic sectional view of a substrate of an embodiment of the heat generating component shown in fig. 6a along line C-C, fig. 7B is a schematic sectional view of a substrate of an embodiment of the heat generating component shown in fig. 7a along line D-D, fig. 8a is a schematic sectional view of a substrate of another embodiment of the heat generating component shown in fig. 3, and fig. 8B is a schematic sectional view of a substrate of another embodiment of the heat generating component along line E-E.

The heat generating component 11 includes a base 111 and a heat generating film 112. The base 111 includes oppositely disposed wicking surfaces 1111 and atomizing surfaces 1112. The base 111 is provided with a plurality of liquid-guiding holes 1113 penetrating the liquid-absorbing surface 1111 and the atomizing surface 1112, the liquid-guiding holes 1113 having capillary force, the liquid-guiding holes 1113 being for guiding the aerosol-generating substrate from the liquid-absorbing surface 1111 to the atomizing surface 1112. The heating film 112 is provided on the atomizing surface 1112, and the liquid guiding hole 1113 extends to the heating film 112 and penetrates the heating film 112. The heat generating film 112 is used to heat the aerosol-generating substrate.

The current flow direction of the heat generating film 112 is defined as a first direction X, and the current flow direction perpendicular to the heat generating film 112 is defined as a second direction Y. The arrangement density of the plurality of liquid guiding holes 1113 in the first direction X is greater than the arrangement density of the plurality of liquid guiding holes 1113 in the second direction Y.

In the prior art, the arrangement density of the plurality of liquid guide holes in the first direction is the same as the arrangement density of the plurality of liquid guide holes in the second direction. Compared with the prior art, the utility model increases the porosity of the matrix 111 by enabling the arrangement density of the plurality of liquid guide holes 1113 in the first direction X to be greater than the arrangement density of the plurality of liquid guide holes 1113 in the second direction Y, and simultaneously ensures the interval between the liquid guide holes 1113 in the second direction Y, thereby being beneficial to improving the stability of the heating film 112.

In one embodiment, the arrangement density of the liquid guiding holes 1113 is increased only in the direction in which the current flows, compared to the prior art; that is, only the arrangement density of the plurality of liquid guiding holes 1113 in the first direction X is increased, and the arrangement density of the plurality of liquid guiding holes 1113 in the second direction Y is the same as that in the related art.

It should be noted that, according to the law of resistance, for the same material, the length is proportional to the resistance, and the cross-sectional area is inversely proportional to the resistance. The use of the conventional column arrangement to increase the hole density (the conventional manner of increasing the hole density is that the plurality of liquid guiding holes are arranged in a plurality of rows and a plurality of columns, the plurality of liquid guiding holes in the row direction are arranged at intervals, the plurality of liquid guiding holes in the column direction are arranged at intervals, and simultaneously the interval between adjacent liquid guiding holes in the row direction and the interval between adjacent liquid guiding holes in the column direction are reduced, and the reduced interval in the row direction is the same as the reduced interval in the column direction), can directly result in the reduction of the interval between the holes in the row direction (i.e., the increase of the hole arrangement density in the row direction), and the reduction of the interval between the holes in the column direction (i.e., the increase of the hole arrangement density in the column direction). If the row direction is the current flowing direction, the column direction is the direction perpendicular to the current flowing direction, and the interval between the holes in the column direction is reduced, the cross-sectional area through which the current flows is reduced, and then the resistance is increased; when the cross-sectional area is reduced, the volume of the local heating film is reduced, and when the constant power source is used for atomizing, the local heat flow density is further increased, so that the local temperature of the heating film is overhigh, and then the heating film with uneven stress is broken or the fusing problem of overhigh temperature is caused. According to the utility model, the distribution density of the liquid guide holes 1113 is increased only along the current flowing direction, so that the distribution density of the liquid guide holes 1113 perpendicular to the current flowing direction is the same as that of the liquid guide holes in the column direction in the prior art, the cross-sectional area through which current flows is unchanged, the porosity is increased, the resistance of the heating film 112 is unchanged, the current distribution density is almost consistent with that of the original heat film, and the problem of breakage or fusing of the heating film 112 caused by overhigh local heat flow density is avoided.

In one embodiment, the arrangement density of the liquid guiding holes 1113 is increased in the direction of current flow, and the arrangement density of the liquid guiding holes 1113 is also increased in the direction perpendicular to the current flow, relative to the prior art. Illustratively, the pitch between adjacent liquid guiding holes 1113 in the current flow direction is reduced while the pitch between adjacent liquid guiding holes 1113 in the direction perpendicular to the current flow direction is reduced, the reduced pitch in the current flow direction being larger than the reduced pitch in the direction perpendicular to the current flow direction; the reduced distance perpendicular to the current flow direction is designed to be a safe value that the distance between the adjacent liquid guiding holes 1113 perpendicular to the current flow direction maintains a safe value that the heat generating film 112 is not likely to fail.

In one embodiment, the plurality of fluid transfer holes 1113 are arranged in a plurality of rows and columns, the row direction is parallel to the first direction X, and the column direction is parallel to the second direction Y. The plurality of fluid transfer holes 1113 of each row are spaced apart, and the plurality of fluid transfer holes 1113 of each column are spaced apart (as shown in fig. 5a and 5 b). It should be noted that, increasing the arrangement density of the liquid guiding holes 1113 in the row direction is achieved by reducing the interval between the adjacent liquid guiding holes 1113 in each row; and/or by reducing the spacing between adjacent liquid guiding holes 1113 of each column.

Optionally, the hole center distance D1 between adjacent liquid guiding holes 1113 in each column is 40 μm or more and 100 μm or less. It will be understood that the hole center distance D1 between the adjacent liquid guiding holes 1113 in each column is related to the aperture of the liquid guiding holes 1113, the aperture of the liquid guiding holes 1113 is approximately 20 μm or more and 50 μm or less, the hole center distance D1 between the adjacent liquid guiding holes 1113 in each column is set to 40 μm or more and 100 μm or less, mutual independence between the adjacent liquid guiding holes 1113 in each column is ensured, and the effective width of the part of the heating film 112 between the two adjacent rows of liquid guiding holes 1113 is ensured, so that electric conduction is realized. Illustratively, the hole center distance D1 between adjacent liquid-guiding holes 1113 in each column is 40 μm or more and 80 μm or less. Illustratively, the center-to-center distance D1 between adjacent liquid transfer holes 1113 in each column is 50 μm. Illustratively, the hole center distance D1 between adjacent liquid guiding holes 1113 in each column is 90 μm.

Optionally, the hole center distance D2 between adjacent liquid guiding holes 1113 in each row is less than or equal to 100 μm. It will be understood that the hole center distance D2 between the adjacent liquid guiding holes 1113 in each row is related to the aperture of the liquid guiding holes 1113, the aperture of the liquid guiding holes 1113 is approximately 20 μm or more and 50 μm or less, and the hole center distance D2 between the adjacent liquid guiding holes 1113 in each row is set to 100 μm or less, so as to ensure that the adjacent liquid guiding holes 1113 in each row are independent of each other. The spacing between adjacent liquid guiding holes 1113 in each row has little influence on the cross-sectional area through which the current of the heat generating film 112 flows, and therefore, the spacing between adjacent liquid guiding holes 1113 in each row can be as small as possible under the conditions of the process being able to be achieved; the hole center distance D2 between the adjacent liquid guiding holes 1113 in each row is too large, which is not beneficial to improving the porosity of the substrate 111, reducing the liquid supply amount of the substrate 111, and possibly has the problem that the atomizing requirement of the heating film 112 cannot be met. Illustratively, the hole center distance D2 between adjacent liquid guiding holes 1113 in each row is 30 μm or more and 90 μm or less. Illustratively, the hole center distance D2 between adjacent liquid guiding holes 1113 in each row is 50 μm. Illustratively, the hole center distance D2 between adjacent liquid guiding holes 1113 in each row is 40 μm.

In one embodiment, the plurality of fluid transfer holes 1113 are arranged in a plurality of rows and columns, the row direction is parallel to the first direction X, and the column direction is parallel to the second direction Y. At least two of the plurality of liquid guiding holes 1113 of each row are communicated with each other; wherein, the mutual communication means direct communication between the liquid guiding holes 1113. The plurality of liquid guiding holes 1113 of each row are arranged at intervals (as shown in fig. 6 a-8 b). It should be noted that, increasing the arrangement density of the liquid guiding holes 1113 in the row direction is achieved by making at least two of the plurality of liquid guiding holes 1113 in each row communicate with each other; and/or by reducing the spacing between adjacent liquid guiding holes 1113 of each column.

Optionally, the ports of at least two of the plurality of fluid delivery holes 1113 in each row located on the atomizing face 1112 overlap each other to achieve communication between the at least two fluid delivery holes 1113. The two liquid guiding holes 1113 are located at the ports of the atomizing surface 1112 and overlap with each other, which means that the ports of the two liquid guiding holes 1113 located at the atomizing surface 1112 are partially overlapped, so that the two liquid guiding holes 1113 are communicated near the hole Duan Bufen of the atomizing surface 1112. For example, referring to fig. 6b, the portions of the two liquid guiding holes 1113 located above the imaginary line L communicate with each other, and the portions of the two liquid guiding holes 1113 located below the imaginary line L are independent of each other.

Optionally, the plurality of liquid guiding holes 1113 of each row are divided into a plurality of groups of liquid guiding holes 1113; each set of fluid transfer holes 1113 includes at least two fluid transfer holes 1113, and all fluid transfer holes 1113 in each set of fluid transfer holes 1113 are in communication with each other. The ports of adjacent two of the fluid transfer holes 1113 in each set of fluid transfer holes 1113 located on the atomizing face 1112 overlap each other. The number of liquid guide holes 1113 in each group of liquid guide holes 1113 is the same; and/or the center-to-center distances between adjacent liquid guiding holes 1113 in each group of liquid guiding holes 1113 are the same; and/or the plurality of liquid guide holes 1113 of each row are divided into a plurality of groups of liquid guide holes 1113, and the distances between two adjacent groups of liquid guide holes 1113 are the same, so that the processing is convenient, and the consistency of liquid supply amounts of all parts of the substrate 111 is ensured. It should be noted that, the number of the liquid guiding holes 1113 in each group of liquid guiding holes 1113 may be different, the hole center distance between the adjacent liquid guiding holes 1113 in each group of liquid guiding holes 1113 may be different, and the distance between the adjacent two groups of liquid guiding holes 1113 may be different, which is specifically designed according to the needs.

Optionally, the hole center distance D1 between adjacent liquid guiding holes 1113 in each column is 40 μm or more and 100 μm or less. It will be understood that the hole center distance D1 between the adjacent liquid guiding holes 1113 in each column is related to the aperture of the liquid guiding holes 1113, the aperture of the liquid guiding holes 1113 is approximately 20 μm or more and 50 μm or less, the hole center distance D1 between the adjacent liquid guiding holes 1113 in each column is set to 40 μm or more and 100 μm or less, mutual independence between the adjacent liquid guiding holes 1113 in each column is ensured, and the effective width of the part of the heating film 112 between the two adjacent rows of liquid guiding holes 1113 is ensured, so that electric conduction is realized. Illustratively, the hole center distance D1 between adjacent liquid-guiding holes 1113 in each column is 40 μm or more and 80 μm or less. Illustratively, the center-to-center distance D1 between adjacent liquid transfer holes 1113 in each column is 50 μm. Illustratively, the hole center distance D1 between adjacent liquid guiding holes 1113 in each column is 90 μm.

Optionally, the plurality of liquid guiding holes 1113 in each row are divided into a plurality of groups of liquid guiding holes 1113, and the hole center distance between adjacent liquid guiding holes 1113 is less than or equal to 100 μm; the center-to-center distance between adjacent liquid-guiding holes 1113 is 10 μm or more. It will be appreciated that the hole center distance between adjacent liquid guiding holes 1113 in each row is related to the hole diameter of the liquid guiding holes 1113, the hole diameter of the liquid guiding holes 1113 is approximately 20 μm or more and 50 μm or less, the hole center distance between the adjacent liquid guiding holes 1113 in each row is set to be 100 μm or less, so that the adjacent liquid guiding holes 1113 in each row can be independent of each other or can be overlapped, that is, the plurality of liquid guiding holes 1113 in each row can be divided into a plurality of groups of liquid guiding holes 1113, the adjacent two groups of liquid guiding holes 1113 are spaced, and the plurality of liquid guiding holes 1113 in each group of liquid guiding holes 1113 overlap; the hole center distance between adjacent liquid guiding holes 1113 is set to 10 μm or more so that when the adjacent liquid guiding holes 1113 overlap, the adjacent liquid guiding holes 1113 overlap at most half.

The distance D3 between two adjacent sets of liquid guiding holes 1113 is the distance between two adjacent liquid guiding holes 1113 between two sets of liquid guiding holes 1113, and the distance between two adjacent sets of liquid guiding holes 1113 is more than or equal to 30 μm. The distance D3 between two adjacent sets of liquid guiding holes 1113 is smaller than 30 μm, which may have the problem that the liquid supply amount is too large, and the heating film 112 cannot be atomized in time, so that liquid leakage is caused, and the atomized taste is reduced. Illustratively, the spacing D3 between two adjacent sets of liquid guiding holes 1113 is 30 μm or more and 90 μm or less. Illustratively, the spacing D3 between two adjacent sets of liquid directing holes 1113 is 50 μm. Illustratively, the spacing D3 between two adjacent sets of liquid directing holes 1113 is 40 μm.

Optionally, the plurality of liquid guiding holes 1113 of each row are divided into a plurality of groups of liquid guiding holes 113; in each set of liquid guiding holes 1113, the center distance between adjacent liquid guiding holes 1113 is 20 μm or more and 60 μm or less. It will be appreciated that the hole center distance between adjacent liquid guiding holes 1113 in each group of liquid guiding holes 1113 affects the porosity of the base 111, thereby affecting the liquid feeding capability, and setting the hole center distance to be 20 μm or more and 60 μm or less enables the base 111 to have a better liquid feeding capability, and can ensure the strength of the base 111.

In one embodiment, the cross-sectional shape of the liquid guiding hole 1113 is the same throughout; the cross-sectional area of the fluid transfer hole 1113 gradually decreases in a direction in which the atomizing surface 1112 is directed toward the fluid suction surface 1111. Wherein cross section refers to a section along a direction parallel to the atomizing face 1112. Alternatively, the cross-sectional shape of the liquid guiding hole 1113 is circular, and the longitudinal cross-sectional shape of the liquid guiding hole 1113 is isosceles trapezoid; here, the longitudinal section refers to a section along a thickness direction parallel to the base 111. In this case, the aperture of the liquid guiding hole 1113 is the aperture of the port of the liquid guiding hole 1113 located on the atomizing surface 1112. The hole center distance D1 between adjacent liquid guiding holes 1113 in each column is the hole center distance between the ports of the atomizing face 1112 of the adjacent liquid guiding holes 1113 in each column; the hole center distance D2 between adjacent liquid guiding holes 1113 in each row is the hole center distance between the ports of the atomizing face 1112 of the adjacent liquid guiding holes 1113 in each row.

In one embodiment, the cross-sectional shape of the liquid guiding hole 1113 is the same throughout; the cross-sectional area of the liquid introduction hole 1113 is uniform along the direction in which the atomizing surface 1112 is directed toward the liquid suction surface 1111; wherein cross section refers to a section along a direction parallel to the atomizing face 1112. Alternatively, the cross-sectional shape of the liquid guiding hole 1113 is circular, and the longitudinal cross-sectional shape of the liquid guiding hole 1113 is rectangular; here, the longitudinal section refers to a section along a thickness direction parallel to the base 111.

In one embodiment, the wicking surface 1111 is disposed parallel to the atomizing surface 1112 for ease of processing and ease of assembly.

In one embodiment, substrate 111 is a dense substrate. Optionally, the material of the substrate 111 is at least one of glass and dense ceramic. It is understood that the material of the substrate 111 includes, but is not limited to, glass, dense ceramics, and is specifically designed as desired. The substrate 111 made of dense material such as glass, because the surface of the substrate 111 is smooth, a continuous and stable metal heating film 112 can be deposited on the surface of the substrate 111 by physical vapor deposition or chemical vapor deposition, and the thickness of the heating film 112 is in the range of several micrometers or nanometers, so that the heating component 11 can be miniaturized, and the material of the heating film 112 can be saved.

In one embodiment, the substrate 111 is a porous substrate. Optionally, the material of the substrate 111 is porous ceramic; the porous ceramic is a porous ceramic material which is prepared from raw materials through molding and special high-temperature sintering processes and has the advantages of open pore diameter and high open porosity, and a plurality of disordered pores are formed in the preparation process of the porous ceramic.

In one embodiment, the thickness of the substrate 111 is 0.2mm-2.5mm. When the thickness of the substrate 111 is greater than 2.5mm, the liquid supply requirement cannot be met, the aerosol quantity is reduced, the heat loss is high, the liquid guide hole 1113 is not easy to penetrate, and the cost for arranging the liquid guide hole 1113 is high; when the thickness of the base 111 is less than 0.2mm, the strength of the base 111 cannot be ensured, which is disadvantageous for improving the performance of the electronic atomizing device. Alternatively, the thickness of the base 111 is 0.2mm-0.5mm. Alternatively, the thickness of the base 111 is 0.2mm-1mm.

In one embodiment, the heat generating film 112 includes a heat generating portion 1121, a first electrode 1122, and a second electrode 1123. The heat generating portion 1121 is elongated, and the heat generating portion 1121 extends straight in the first direction X. The first electrode 1122 and the second electrode 1123 are provided at opposite ends of the heat generating portion 1121 along the first direction X. Illustratively, the first electrode 1122 is a positive electrode, the second electrode 1123 is a negative electrode, and the current flow direction of the heat generating portion 1121 is such that the first electrode 1122 is directed toward the second electrode 1123.

As shown in fig. 6a and 6b, the plurality of liquid guiding holes 1113 are arranged in a plurality of rows and columns, the row direction is parallel to the first direction X, and the column direction is parallel to the second direction Y. Two adjacent rows of liquid guide holes 1113 are arranged at intervals. The plurality of fluid transfer holes 1113 of each row are divided into a plurality of sets of fluid transfer holes 1113. Each set of fluid transfer holes 1113 includes two fluid transfer holes 1113, and the two fluid transfer holes 1113 in each set of fluid transfer holes 1113 are in communication with each other. The number of liquid guide holes 1113 in each group of liquid guide holes 1113 is two; the center distances between adjacent liquid guide holes 1113 in each group of liquid guide holes 1113 are the same; the plurality of liquid guiding holes 1113 of each row are divided into a plurality of groups of liquid guiding holes 1113, and the distances between two adjacent groups of liquid guiding holes 1113 are the same. Wherein, the ports of the two liquid guide holes 1113 in each group of liquid guide holes 1113 located on the atomizing surface 1112 are mutually overlapped, so that the volume porosity is increased, the liquid supply effect is improved, the atomization quantity is improved, and meanwhile, the current passing in the heating film 112 on the atomizing surface 1112 is not influenced; the ports of the two liquid-guiding holes 1113 in each group of liquid-guiding holes 1113 located on the liquid-absorbing surface 1111 are spaced from each other, which helps to reduce the return air during heating and atomization. The cross-sectional shape of the liquid guiding hole 1113 is circular, and the longitudinal cross-sectional shape of the liquid guiding hole 1113 is isosceles trapezoid.

As shown in fig. 7a and 7b, the plurality of liquid guiding holes 1113 are arranged in a plurality of rows and columns, the row direction is parallel to the first direction X, and the column direction is parallel to the second direction Y. Two adjacent rows of liquid guide holes 1113 are arranged at intervals. The plurality of fluid transfer holes 1113 of each row are divided into a plurality of sets of fluid transfer holes 1113. Each set of fluid transfer holes 1113 includes five fluid transfer holes 1113, and adjacent fluid transfer holes 1113 in each set of fluid transfer holes 1113 are communicated with each other. The number of liquid guide holes 1113 in each group of liquid guide holes 1113 is five; the center distances between adjacent liquid guide holes 1113 in each group of liquid guide holes 1113 are the same; the plurality of liquid guiding holes 1113 of each row are divided into a plurality of groups of liquid guiding holes 1113, and the distances between two adjacent groups of liquid guiding holes 1113 are the same. Wherein, the ports of the five liquid guide holes 1113 in each group of liquid guide holes 1113, which are positioned on the atomizing surface 1112, are mutually overlapped, so that the volume porosity is increased, the liquid supply effect is improved, the atomization quantity is improved, and meanwhile, the current passing in the heating film 112 on the atomizing surface 1112 is not influenced; the ports of the five liquid-guiding holes 1113 in each group of liquid-guiding holes 1113 located on the liquid-absorbing surface 1111 are spaced from each other, which helps to reduce the return air during heating and atomization. The cross-sectional shape of the liquid guiding hole 1113 is circular, and the longitudinal cross-sectional shape of the liquid guiding hole 1113 is isosceles trapezoid.

As shown in fig. 8a and 8b, the plurality of liquid guiding holes 1113 are arranged in a plurality of rows and columns, the row direction is parallel to the first direction X, and the column direction is parallel to the second direction Y. Two adjacent rows of liquid guide holes 1113 are arranged at intervals. The plurality of fluid transfer holes 1113 of each row are divided into a plurality of sets of fluid transfer holes 1113. Each set of fluid transfer holes 1113 includes twelve fluid transfer holes 1113, and adjacent fluid transfer holes 1113 in each set of fluid transfer holes 1113 are communicated with each other. The number of liquid guide holes 1113 in each group of liquid guide holes 1113 is twelve; the center distances between adjacent liquid guide holes 1113 in each group of liquid guide holes 1113 are the same; the plurality of liquid guiding holes 1113 of each row are divided into a plurality of groups of liquid guiding holes 1113, and the distances between two adjacent groups of liquid guiding holes 1113 are the same. Wherein, the ports of twelve liquid guide holes 1113 in each group of liquid guide holes 1113 located on the atomizing surface 1112 are mutually overlapped, thereby increasing the volume porosity, improving the liquid supply effect, being beneficial to improving the atomization amount and not affecting the current passing in the heating film 112 on the atomizing surface 1112; the ports of twelve liquid transfer holes 1113 in each set of liquid transfer holes 1113 located on the liquid suction surface 1111 are spaced apart from each other to help reduce air return during heating and atomization. The cross-sectional shape of the liquid guiding hole 1113 is circular, and the longitudinal cross-sectional shape of the liquid guiding hole 1113 is isosceles trapezoid.

Referring to fig. 9 and 10, fig. 9 is a graph showing comparison of current density distribution of the first, second and third experimental pieces, and fig. 10 is a graph showing comparison of joule heat distribution of the first, second and third experimental pieces.

The prior art matrix was defined as the first experimental piece. The substrate in the prior art is provided with a plurality of liquid guide holes which are distributed in a plurality of rows and columns; the liquid guide holes of any two adjacent rows are arranged at intervals, and the liquid guide holes of any two adjacent columns are arranged at intervals; the spacing between any two adjacent rows of liquid guide holes is consistent, the spacing between any two adjacent columns of liquid guide holes is consistent, and the spacing between two adjacent rows of liquid guide holes is consistent with the spacing between two adjacent columns of liquid guide holes.

The porosity was increased using the conventional method for the prior art matrix, and the matrix with the porosity increased using the conventional method was defined as a second experimental piece. Specifically, the distance between two adjacent rows of liquid guide holes is reduced, and meanwhile, the distance between two adjacent columns of liquid guide holes is reduced, so that other parameters such as the aperture, the shape of an opening and the like are kept unchanged.

The porosity was increased using the method of the utility model on the prior art substrate, defined as the third experimental piece. Specifically, the plurality of liquid guiding holes 1113 of each row are divided into a plurality of groups of liquid guiding holes 1113, each group of liquid guiding holes 1113 comprises five liquid guiding holes 1113, and adjacent liquid guiding holes 1113 in each group of liquid guiding holes 1113 are communicated with each other; meanwhile, the distance between two adjacent rows of liquid guide holes is not changed, and other parameters such as the aperture, the shape of the open hole and the like are kept unchanged.

As can be seen from comparison of the current distribution densities and the Joule heat distribution of the first experimental part, the second experimental part and the third experimental part, the mode provided by the utility model is adopted to increase the porosity, the porosity is increased, the sectional area of the conductive channel between two adjacent rows of liquid guide holes 1113 is unchanged, the heat flow density is unchanged, the current distribution density is almost consistent with that of the first experimental part, and the local heat flow density is prevented from being too high.

The foregoing is only the embodiments of the present utility model, and therefore, the patent scope of the utility model is not limited thereto, and all equivalent structures or equivalent processes using the descriptions of the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the utility model.

Claims (14)

1. A heat generating component for use in an electronic atomizing device for atomizing an aerosol-generating substrate, comprising:

a substrate comprising a liquid suction surface and an atomization surface which are oppositely arranged; the base body is provided with a plurality of liquid guide holes penetrating through the liquid suction surface and the atomization surface;

the heating film is arranged on the atomization surface; the liquid guide hole extends to the heating film and penetrates through the heating film;

the current flowing direction of the heating film is defined as a first direction, and the current flowing direction perpendicular to the heating film is defined as a second direction; the arrangement density of the liquid guide holes in the first direction is greater than the arrangement density of the liquid guide holes in the second direction.

2. The heat generating assembly of claim 1, wherein the heat generating film comprises a heat generating portion, a first electrode, and a second electrode; the heating part is in a strip shape and extends linearly along the first direction; the first electrode and the second electrode are respectively arranged at two opposite ends of the heating part along the first direction.

3. The heat generating assembly of claim 1, wherein a plurality of said liquid guiding holes are arranged in a plurality of rows and columns, the row direction being parallel to said first direction and the column direction being parallel to said second direction; the liquid guide holes of each row are arranged at intervals, and the liquid guide holes of each column are arranged at intervals.

4. A heat generating component according to claim 3, wherein the aperture of the liquid guiding hole is 20 μm or more and 50 μm or less; the center distance between the adjacent liquid guide holes in each row is less than or equal to 100 mu m; and/or the center distance between the adjacent liquid guide holes in each row is more than or equal to 40 mu m and less than or equal to 100 mu m.

5. The heat generating assembly of claim 1, wherein a plurality of said liquid guiding holes are arranged in a plurality of rows and columns, the row direction being parallel to said first direction and the column direction being parallel to said second direction; at least two of the liquid guide holes in each row are communicated with each other; a plurality of liquid guide holes in each row are arranged at intervals.

6. The heat generating assembly of claim 5, wherein at least two of said plurality of liquid delivery apertures in each row overlap with each other at a port of said atomizing face.

7. The heat generating assembly of claim 5, wherein the plurality of liquid transfer holes of each row are divided into a plurality of groups of liquid transfer holes; each group of liquid guide holes comprises at least two liquid guide holes, and all liquid guide holes in each group of liquid guide holes are mutually communicated.

8. The heat generating assembly of claim 7, wherein the number of said weep holes in each set of said weep holes is the same; and/or the center distances of holes between adjacent liquid guide holes in each group of liquid guide holes are the same; and/or the liquid guide holes of each row are divided into a plurality of groups of liquid guide holes, and the distances between two adjacent groups of liquid guide holes are the same.

9. The heat generating component of claim 7, wherein the liquid guide hole has a pore diameter of 20 μm or more and 50 μm or less; the liquid guide holes in each row are divided into a plurality of groups of liquid guide holes, and the center distance between the adjacent liquid guide holes is less than or equal to 100 mu m; and/or the center distance between the adjacent liquid guide holes in each row is more than or equal to 40 mu m and less than or equal to 100 mu m.

10. The heat generating component of claim 1, wherein the substrate is a dense substrate or a porous substrate.

11. The heat generating component of claim 10, wherein the substrate is a dense substrate, and the substrate is at least one of glass and dense ceramic; or alternatively, the first and second heat exchangers may be,

the matrix is a porous matrix, and the material of the matrix is porous ceramic.

12. The heat generating component of claim 1, wherein the thickness of the substrate is 0.2mm to 2.5mm.

13. An atomizer, comprising:

a reservoir for storing an aerosol-generating substrate;

a heat generating component in fluid communication with the reservoir, the heat generating component for atomizing the aerosol-generating substrate; the heat generating component is a heat generating component as claimed in any one of claims 1 to 12.

14. An electronic atomizing device, comprising:

the atomizer of claim 13;

and the host is used for providing electric energy for the operation of the heating component of the atomizer and controlling the heating component of the atomizer to atomize the aerosol generating substrate.