WO2023151326A1

WO2023151326A1 - Atomizing core, atomizer, and electronic atomization apparatus

Info

Publication number: WO2023151326A1
Application number: PCT/CN2022/130757
Authority: WO
Inventors: 潘腾; 万科; 周宏明
Original assignee: 海南摩尔兄弟科技有限公司
Priority date: 2022-02-10
Filing date: 2022-11-09
Publication date: 2023-08-17
Also published as: CN217390004U; WO2023151326A9

Abstract

An atomizing core (200), an atomizer (100), and an electronic atomization apparatus, comprising: a base (10). The base (10) has a liquid absorbing surface (11) and an atomizing surface (12). A liquid guide channel (13) communicating the liquid absorbing surface (11) and the atomizing surface (12) is provided in the base (10); the liquid guide channel (13) comprises at least two stages of channel segments (14) in communication with one another, each stage of channel segment (14) comprises at least one sub-channel (15), and the sub-channels (15) comprised in each stage of channel segment (14) are independent of one another and are all communicated with a channel segment of a neighboring stage; from a first end communicating the liquid guide channel (13) with the liquid absorbing surface (11) to a second end communicated with the atomizing surface (12), the equivalent diameter of each sub-channel (15) comprised in the channel segments (14) decreases with each stage. The equivalent diameter of the sub-channel (15) adjacent to the liquid absorbing surface (11) is relatively large so as to reduce the resistance encountered in the process of conveying an aerosol-generating substrate; and the equivalent diameter of the sub-channels (15) adjacent to the atomizing surface (12) is relatively small, as sub-channels with a small equivalent diameter have a larger driving force. The lower resistance and the higher driving force can increase a liquid guide rate, thus improving the atomization efficiency of the aerosol-generating substrate.

Description

Coils, atomizers and electronic atomization devices

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 2022202739465 and the title of the invention "atomization core, atomizer and electronic atomization device" submitted to the China Patent Office on February 10, 2022, the entire contents of which are incorporated by reference incorporated in this application.

technical field

The present application relates to the technical field of atomization, in particular to an atomization core, an atomizer and an electronic atomization device.

Background technique

Aerosol is a colloidal dispersion system formed by dispersing small solid or liquid particles and suspending them in a gas medium. Since aerosol can be absorbed by the human body through the respiratory system, it provides users with a new alternative absorption method, such as herbal An electronic atomization device that produces an aerosol by baking and heating an aerosol-like or cream-like aerosol-generating substrate is used in different fields to deliver an inhalable aerosol to users, replacing conventional product forms and absorption methods.

The electronic atomization device includes an atomizer, and the atomizer includes an atomization core and a heating element. The atomization core conducts the aerosol-generating substrate to the heating element, and the heating element heats the aerosol-generating substrate to generate an aerosol. The conduction rate of the atomizing core from the aerosol-generating substrate to the heating element and the evaporation rate of the aerosol-generating substrate on the heating element together determine the atomization efficiency of the aerosol-generating substrate.

In order to facilitate the conduction of the aerosol-generating substrate to the heating element, a pore structure needs to be set on the atomizing core. At present, there are two main ways to form the pore structure of the atomizing core. The first is that the pore-forming agent in the matrix is decomposed by high-temperature treatment to form a pore structure, and the second is to form a honeycomb-like pore structure by molding process or mechanical pore-making. .

Contents of the invention

For the above-mentioned first method, due to the small pore size and large specific surface area, the resistance of liquid conduction is relatively large; for the second method, due to the large pore size, the driving force for liquid conduction is small. Both high drag and low driving force result in lower transduction rates and thus less efficient atomization of the aerosol-generating substrate.

Based on this, it is necessary to provide an atomization core, an atomizer and an electronic atomization device capable of increasing the liquid conduction rate for the problem of the low liquid conduction rate of the traditional atomization core.

The first aspect of the present application provides an atomizing core. The atomizing core includes a base body, the base body has a liquid-absorbing surface and an atomizing surface, and a liquid-conducting channel connecting the liquid-absorbing surface and the atomizing surface is arranged in the base body. The liquid guide channel includes at least two levels of channel sections that communicate with each other, and each level of the channel section includes at least one sub-channel, and the sub-channels included in each level of the channel section are independent of each other and are all connected to the adjacent level. The channel segment of the is connected. From the first end of the liquid guiding channel communicating with the liquid-absorbing surface to the second end communicating with the atomizing surface, the equivalent diameter of each of the sub-channels included in each channel segment decreases step by step.

In the first aspect of the present application, from the first end to the second end, each sub-channel branch of the channel section at the upper stage forms a branch of the channel section at the next stage. at least two of said sub-channels.

In the first aspect of the present application, the channel section directly communicating with the liquid-absorbing surface includes one sub-channel.

In the first aspect of the present application, from the first end to the second end, each of the sub-channel branches included in the channel section at the upper stage forms the same number of sub-channel branches at the next stage. The sub-channel of the channel segment.

In the first aspect of the present application, from the first end to the second end, the equivalent diameter of each of the sub-channels of the channel section located at the next stage is the same as that of the channel section located at the previous stage. The ratio of the equivalent diameters of each of said sub-channels of the channel segment is in the range of 0.6 to 0.8.

In the first aspect of the present application, from the first end to the second end, the total equivalent diameters of all the sub-channels included in the channel segments of each stage decrease step by step.

In the first aspect of the present application, the liquid guiding channel has a symmetrical structure relative to a reference plane, and the reference plane intersects both the liquid absorbing surface and the atomizing surface.

In the first aspect of the present application, the base body is provided with at least two liquid guiding channels that are independent of each other.

According to the atomizing core according to the first aspect of the present application, since the equivalent diameter of the sub-channel near the liquid-guiding surface is larger, the resistance encountered during the delivery of the aerosol-generating substrate can be reduced. Moreover, the equivalent diameter of the sub-channel near the atomizing surface is small, and the driving force of the sub-channel with a small equivalent diameter is relatively large, which provides capillary force for the transport of the aerosol-generating substrate. Both the smaller resistance and the larger driving force can increase the liquid delivery rate, thereby improving the atomization efficiency of the aerosol-generating substrate.

According to a second aspect of the present application, an atomizer is provided. The atomizer includes the atomizing core as described in the first aspect above.

According to a third aspect of the present application, an electronic atomization device is provided. The electronic atomization device includes the atomizer described in the second aspect above.

Description of drawings

Fig. 1 is a schematic structural diagram showing an atomizer according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram of the atomizing core of the atomizer shown in Fig. 1;

Fig. 3 is a perspective view of the atomizing core shown in Fig. 2;

Fig. 4 is a sectional view of the atomizing core shown in Fig. 2;

Fig. 5 is another cross-sectional view of the atomizing core shown in Fig. 2 .

Explanation of reference signs:

100, atomizer; 200, atomizing core; 10, substrate; 11, liquid absorption surface; 12, atomization surface; 13, liquid guide channel; 14, channel section; 141, first-level channel section; Secondary channel section; 143, third-level channel section; 144, fourth-level channel section; 15, sub-channel; 300, heating element.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiments.

Referring to FIG. 1 , FIG. 1 shows an atomizer 100 according to an embodiment of the present application. The atomizer 100 can be applied to an electronic atomization device, for example, it can be used to heat and atomize an aerosol-generating substrate of flowers, leaves, herbs, or creams.

As shown in FIG. 1 , the atomizer 100 includes an atomizing core 200 and a heating element 300 , the atomizing core 200 conducts the aerosol-generating substrate to the heating element 300 , and the heating element 300 heats the aerosol-generating substrate to generate an aerosol.

Referring to FIG. 2 and FIG. 3 , the atomizing core 200 includes a base 10 , the base 10 has a liquid absorbing surface 11 and an atomizing surface 12 , and the atomizing surface 12 is in contact with the heating element 300 . The base body 10 is also provided with a liquid guiding channel 13 , and the liquid guiding channel 13 communicates with the liquid absorbing surface 11 and the atomizing surface 12 . The aerosol-generating substrate enters the liquid-guiding channel 13 from the liquid-absorbing surface 11, and flows from the liquid-guiding channel 13 to the atomizing surface 12. The heating element 300 generates heat to atomize the aerosol-generating substrate on the atomizing surface 12 to generate an aerosol.

Specifically, referring to Fig. 3 and Fig. 4, the liquid guide channel 13 includes at least two stages of channel sections 14 communicating with each other, each stage of channel section 14 includes at least one sub-channel 15, and the sub-channel 15 included in each stage of channel section 14 Independent.

In a specific embodiment, each level of channel section 14 includes a sub-channel 15, and at this time, one sub-channel 15 included in each level of channel section 14 forms the channel section 14, and each adjacent two-level channel section 14 includes One sub-channel 15 communicates to form the above-mentioned liquid guiding channel 13 .

In another specific embodiment, each level of channel section 14 includes a plurality of (at least two) sub-channels 15, and at this time, the multiple sub-channels 15 included in each level of channel section 14 form the channel section 14, and each level of channel section A plurality of sub-channels 15 included in 14 communicate to form the above-mentioned liquid guiding channel 13 . Specifically, when the number of sub-channels 15 included in each level of channel section 14 is equal, the sub-channels 15 of every two adjacent levels of channel sections 14 are connected in one-to-one correspondence. And when the number of the sub-channels 15 that each level of channel section 14 includes is not equal, in the two channel sections 14 of two adjacent stages, there is a sub-channel 15 of one channel section 14 and two channels of another channel section 14. The situation that a sub-channel 15 or more than two sub-channels 15 are connected at the same time.

In yet another specific embodiment, part of the channel section 14 includes a sub-channel 15, and the remaining part of the channel section 14 includes a plurality of (at least two) sub-channels 15, and the stage of channel section 14 that only includes one sub-channel 15 is composed of a Sub-channels 15 are formed, and the stage of channel segment 14 comprising a plurality of sub-channels 15 is formed from a plurality of sub-channels 15 . In the two channel sections 14 of two adjacent stages, there is a situation that one subchannel 15 of one channel section 14 communicates with two subchannels 15 or more than two subchannels 15 of the other channel section 14 at the same time.

In one embodiment, the liquid guide channel 13 has a first end communicated with the liquid-absorbing surface 11, and has a second end communicated with the atomizing surface 12, from the first end to the second end, the channel section 14 includes The equivalent diameter of each sub-channel 15 gradually decreases. That is, from the first end to the second end, in every adjacent two-stage channel section 14, the equivalent diameter of each sub-channel 15 included in the upper stage (previous stage) channel section 14 is greater than that of the next stage (the latter stage) The equivalent diameter of each sub-channel 15 included in the channel section 14.

Because the fluid guiding rate is jointly determined by the fluid guiding force and the fluid guiding resistance. The driving force of the liquid conduction comes from the capillary force provided by the micropores, which is inversely proportional to the first power of the pore diameter; the resistance of the liquid conduction comes from the friction force with the inner surface of the micropore during the flow of the aerosol-generating matrix, which is inversely proportional to the second power of the pore diameter. The square is inversely proportional.

With the above arrangement, since the equivalent diameter of the sub-channel 15 close to the liquid-guiding surface is larger, the resistance encountered during the delivery of the aerosol-generating substrate can be reduced. Moreover, the equivalent diameter of the sub-channel 15 close to the atomizing surface 12 is small, and the driving force of the sub-channel 15 with a small equivalent diameter is relatively large, which provides capillary force for the transport of the aerosol-generating substrate. Both the smaller resistance and the larger driving force can increase the liquid delivery rate, thereby improving the atomization efficiency of the aerosol-generating substrate.

It should be noted here that the above-mentioned sub-channel 15 is a micro-channel, that is, the liquid guiding channel 13 is a micro-channel.

It should also be noted here that the above-mentioned equivalent diameter is also called an equivalent circle diameter, and the equivalent diameter is the diameter of a circular pipe with the same hydraulic radius. The diameter of a circular pipe with equal hydraulic radius is defined as the equivalent diameter of a non-circular pipe. On the effective cross-section of the total flow, the contact length between the fluid and the solid wall is called the wet circumference, represented by the letter L, and the ratio of the effective cross-sectional area A of the total flow to the wet circumference L is defined as the hydraulic radius, represented by the letter R. The equivalent diameter is defined as four times the hydraulic radius, denoted by de.

It should be noted that the material of the atomizing core 200 can adopt various materials currently known or developed in the future, and the processing method of the liquid guide channel 13 can adopt various methods currently known or developed in the future, so here The material of the atomizing core 200 and the processing method of the liquid guiding channel 13 are not limited.

In one embodiment, referring to FIG. 5 , the cross-sectional shapes of the sub-channels 15 of the channel segments 14 of each stage are all circular, and the above-mentioned equivalent diameter is the diameter of the circle. Certainly, in some other embodiments, the cross-sectional shape of the sub-channel 15 may also be an irregular figure.

The base body 10 is provided with two independent liquid conduction channels 13 to increase the liquid conduction rate of the atomizing core 200 . It should be understood that, in some other embodiments, only one liquid guiding channel 13 may be provided in the base body 10 , and the number of liquid guiding channels 13 in the base body 10 is not specifically limited here.

Specifically, continuing to refer to FIG. 3 , each liquid guiding channel 13 has a symmetrical structure relative to the reference plane. The reference surface intersects both the liquid-absorbing surface 11 and the atomizing surface 12 . For example, the reference plane extends along the longitudinal direction of the liquid guiding channel 13 , in particular, along the axial direction of the liquid guiding channel 13 , and is orthogonal to both the liquid absorbing surface 11 and the atomizing surface 12 . The symmetrical structure of the liquid guiding channel 13 means that the two longitudinal halves of the liquid guiding channel 13 are mirrored on both sides of the reference plane. Certainly, in some other embodiments, the liquid guiding channel 13 may have any other suitable structure, and the specific shape of the structure of the liquid guiding channel 13 is not specifically limited here.

In one embodiment, from the first end to the second end, the sub-channels 15 of the channel section 14 at the lower stage are branched from the sub-channels 15 of the channel section 14 at the upper stage. That is, each sub-channel 15 of the channel section 14 at the upper stage branches to form at least two sub-channels 15 of the channel section 14 at the next stage. In this way, from one end to the second end, the number of sub-channels 15 included in the channel segment 14 increases step by step, so that the equivalent diameter of the sub-channels 15 is conveniently reduced step by step.

It should be understood that, in some other embodiments, the sub-channels 15 of each channel section 14 may also be arranged in other ways, which is not limited here.

Further, the channel segment 14 directly connected to the liquid-absorbing surface 11 includes a sub-channel 15 , so that the liquid-conducting channel 13 is branched from one sub-channel 15 to form a plurality of sub-channels 15 step by step. Of course, in some other embodiments, the channel section 14 directly communicating with the liquid-absorbing surface 11 may also include at least two sub-channels 15, and the number of sub-channels 15 included in the channel section 14 directly communicating with the liquid-absorbing surface 11 is This is not specifically limited.

From the first end to the second end, each sub-channel 15 included in the upper channel segment 14 branches to form the same number of sub-channels 15 in the lower channel segment 14 . In this way, the opening of the liquid guiding channel 13 is facilitated. It should be understood that, it may also be set that each sub-channel 15 included in the channel section 14 at the upper stage branches to form a different number of sub-channels 15 of the channel section 14 at the next stage.

In one embodiment, from the first end to the second end, the equivalent diameter of each sub-channel 15 of the channel section 14 located at the next stage is equal to the equivalent diameter of each sub-channel 15 of the channel section 14 located at the upper stage The ratio is in the range of 0.6 to 0.8, so that the difference between the total equivalent diameters of each adjacent two-stage channel section 14 will not be too large.

In another embodiment, from the first end to the second end, the total equivalent diameters of all the sub-channels 15 included in the channel sections 14 of each stage are gradually reduced, so that the diameter of each adjacent two-stage channel section can be further reduced. 14 total equivalent diameter gaps.

It should be understood that, in some other embodiments, it is also possible to set the sub-channel 15 directly connected to the liquid-absorbing surface 11 to be inclined to the liquid-absorbing surface 11, or to set the sub-channel 15 connected to the atomizing surface 12 to be connected to the atomizing surface 12. The surface 12 is inclined, which is not specifically limited here.

The solution of the present application will be introduced in detail below with a specific embodiment.

Returning to Fig. 3, from the first end to the second end of the liquid guide channel 13, the liquid guide channel 13 includes a four-level channel section 14, for example, includes a first-level channel section 141, a second-level channel section 142, and a third-level channel section. Section 143 and the fourth channel section 144.

The first-level channel section 141 includes one sub-channel 15 , and one sub-channel 15 of the first-level channel section 141 branches to form four sub-channels 15 of the second-level channel section 142 . Each sub-channel 15 of the second-level channel section 142 branches to form four sub-channels 15 of the third-level channel section 143 , and the third-level channel section 143 has 16 sub-channels 15 . Each sub-channel 15 of the third-level channel section 143 branches to form four sub-channels 15 of the fourth-level channel section 144 , and the fourth-level channel section 144 has 64 sub-channels 15 .

In this embodiment, each liquid guiding channel 13 is in the shape of a quadtree. It should be understood that, in some other embodiments, each liquid guiding channel 13 may also be in the shape of a binary tree, or a triple tree, or other shapes, which are not limited herein.

Specifically, the ratio of the equivalent diameter of the sub-channel 15 of the channel section 14 located at the next stage to the equivalent diameter of the channel section 14 located at the previous stage is in the range of 0.6 to 0.8.

Another embodiment of the present application also provides an electronic atomization device including the above-mentioned atomizer 100 , and an atomizing core 200 included in the above-mentioned atomizer 100 .

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

An atomizing core, characterized in that it includes a base, the base has a liquid-absorbing surface and an atomizing surface, and a liquid-conducting channel connecting the liquid-absorbing surface and the atomizing surface is provided in the base;

The liquid guide channel includes at least two levels of channel sections that communicate with each other, and each level of the channel section includes at least one sub-channel, and the sub-channels included in each level of the channel section are independent of each other and are all connected to the adjacent level. The channel segment of is connected;

From the first end of the liquid guiding channel in communication with the liquid-absorbing surface to the second end in communication with the atomizing surface, the equivalent diameter of each of the sub-channels included in the channel section decreases step by step.
The atomizing core according to claim 1, characterized in that, from the first end to the second end, each of the sub-channel branches of the channel section located at the upper stage forms a sub-channel branch located at the next stage at least two of the sub-channels of the channel segment.
The atomizing core according to claim 2, characterized in that, the channel segment directly communicating with the liquid-absorbing surface includes one sub-channel.
The atomizing core according to claim 2 or 3, characterized in that, from the first end to the second end, each of the sub-channel branches included in the channel segment at the upper stage forms a The same number of said sub-channels of said channel segments located at the next stage.
The atomizing core according to claim 1, characterized in that, from the first end to the second end, the equivalent diameter of each of the sub-channels of the channel section located at the next stage is the same as that located at The ratio of the equivalent diameters of each of the sub-channels of the channel section of the upper stage is in the range of 0.6 to 0.8.
The atomizing core according to claim 1, characterized in that, from the first end to the second end, the total equivalent diameters of all the sub-channels included in the channel sections of each stage decrease step by step.
The atomizing core according to claim 1, wherein the liquid guiding channel has a symmetrical structure relative to a reference plane, and the reference plane intersects both the liquid absorbing surface and the atomizing surface.
The atomizing core according to claim 1, characterized in that, the base body is provided with at least two independent liquid guiding channels.
An atomizer, characterized in that it comprises the atomizing core according to any one of claims 1-8.
An electronic atomization device, characterized by comprising the atomizer according to claim 9.