WO2023004793A1

WO2023004793A1 - Electronic atomization device, atomizer, and atomization assembly of electronic atomization device

Info

Publication number: WO2023004793A1
Application number: PCT/CN2021/109806
Authority: WO
Inventors: 王洪钊; 杨豪; 夏畅; 雷桂林; 崔望; 傅显钧
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2023-02-02
Also published as: WO2023005029A1

Abstract

Disclosed in the present application are an electronic atomization device, an atomizer, and an atomization assembly of the electronic atomization device. The atomization assembly comprises: a porous base body having a honeycomb-shaped pore, the porous base body being provided with an atomization face and an airflow channel penetrating the porous base body, a capillary groove being provided in an inner side wall of the airflow channel, the capillary groove extending to the atomization face, and the capillary force of the honeycomb-shaped pore being greater than the capillary force of the capillary groove; and a heating element provided on the atomization face. By means of the arrangement of the capillary groove in the inner side wall of the airflow channel, and the capillary groove extending to the atomization face, the atomization assembly provided in the present application can supplement a liquid matrix stored in the capillary groove for the atomization face, so as to avoid the situation of dry burning caused by insufficient liquid supply.

Description

Electronic atomization device, atomizer and atomization components thereof

【Technical field】

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

【Background technique】

The atomization component is an important part of the electronic atomization device. It transmits the liquid from the liquid storage chamber to the surface of the heater through the porous medium, and the liquid is heated by the heater and vaporized into an aerosol, which is sucked into the mouth.

In the existing atomization assembly, the heating wire is wound on the oil guide rope, and the two ends of the oil guide rope absorb the liquid to the heater to atomize the liquid. However, due to the limited area at both ends of the oil guide rope and the low liquid adsorption capacity, when the input power is large, it is easy to cause poor liquid supply, resulting in dry burning, scorching and other phenomena.

【Content of invention】

The present application mainly provides an electronic atomization device, an atomizer and an atomization component thereof, so as to solve the problem that the atomization component is poorly supplied with liquid and is prone to dry burning.

In order to solve the above technical problems, a technical solution adopted by the present application is to provide an atomization group. The atomization assembly includes: a porous base body with honeycomb-shaped pores; the porous base body has an atomization surface and an air flow channel passing through the porous base body, the inner sidewall of the air flow channel is provided with a capillary groove, and the capillary groove extends to the atomization surface, and the capillary force of the honeycomb-shaped pores is greater than the capillary force of the capillary groove; the heating element is arranged on the atomization surface.

In some embodiments, the porous matrix includes a first end surface and a second end surface opposite to each other, and the gas flow channel and the capillary groove extend from the first end surface to the second end surface, wherein the first The end face is the atomization face.

In some embodiments, the porous matrix further includes an outer wall surface disposed between the first end surface and the second end surface, the outer wall surface is a liquid-absorbing surface; and/or

The second end surface is a liquid-absorbing surface.

In some embodiments, the porous matrix is cylindrical.

In some embodiments, the cross-section of the capillary groove along the axial direction of the airflow channel is polygonal or arc-shaped.

In some embodiments, the capillary groove includes a first groove body and a second groove body communicating with the first groove body in the depth direction, and the second groove body is arranged between the air flow channel and the first groove body. between tanks;

Wherein, the maximum width of the second groove body along the circumferential direction of the airflow channel is smaller than the maximum width of the first groove body along the circumferential direction of the airflow channel.

In some embodiments, the first groove body is an arc groove, and the second groove body is a rectangular groove, so that the cross-section of the capillary groove along the axial direction of the airflow channel is Ω-shaped.

In some embodiments, the width of the second groove along the circumference of the airflow channel is greater than or equal to 0.57mm and less than or equal to 0.86mm.

In some embodiments, the maximum width of the first slot body along the circumferential direction of the airflow channel is greater than or equal to 0.69 mm and less than or equal to 1.03 mm.

In some embodiments, the depth of the second groove along the radial direction of the airflow channel is greater than or equal to 0.92mm and less than or equal to 1.8mm.

In some embodiments, the width of the opening of the second groove located in the airflow channel is smaller than the hydraulic diameter of the airflow channel.

In some embodiments, the capillary groove has a first draft angle from the first end surface to the second end surface, and the cross section of the capillary groove along the axial direction of the airflow channel is defined by the first One end gradually increases toward the second end surface.

In some embodiments, the first draft angle is in the range of 1 degree to 3 degrees.

In some embodiments, the airflow channel has a second draft angle from the first end surface to the second end surface, and the radial dimension of the airflow channel on the first end surface is smaller than that of the airflow channel on the first end surface. The radial dimension of the second end surface.

In some embodiments, the second draft angle is in the range of 1 degree to 3 degrees.

In some embodiments, the heating element is disposed around the airflow channel.

In some embodiments, the inner sidewall of the airflow channel is provided with a plurality of capillary grooves, the heating element includes a plurality of surrounding portions connected in sequence, and each surrounding portion corresponds to one of the capillary grooves.

In some embodiments, teeth are formed between adjacent capillary grooves, and the heating element further includes a plurality of extensions, and each extension is connected to the connection between the corresponding two surrounding portions. end, and the extension part is also arranged on the tooth part.

In some embodiments, the outer wall of the porous matrix is further provided with a retaining ring.

In order to solve the above technical problems, another technical solution adopted by the present application is to provide an atomizer. The atomizer includes a liquid storage chamber for storing an aerosol-generating substrate and the above-mentioned atomization assembly, the porous substrate is in fluid communication with the liquid storage chamber, and the heating element is used for heating and atomizing the aerosol Aerosol-generating substrates for porous substrates.

In order to solve the above technical problems, another technical solution adopted by the present application is to provide an electronic atomization device. The electronic atomization device includes a power supply and the aforementioned atomizer, the power supply is connected to the atomizer and supplies power to the atomizer.

The beneficial effects of the present application are: different from the prior art, the present application discloses an electronic atomization device, an atomizer and an atomization assembly thereof. By setting capillary grooves on the inner wall of the airflow channel, the liquid storage capacity of the porous substrate is increased, and the capillary grooves also extend to the atomizing surface, so that the liquid substrate stored in the capillary grooves can be quickly provided to the atomizing surface, and then replenish the heating element The required liquid base avoids dry burning caused by insufficient liquid supply.

【Description of drawings】

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative work, wherein:

Fig. 1 is a schematic structural diagram of an embodiment of an electronic atomization device provided by the present application;

Fig. 2 is a schematic structural diagram of the atomizer in the electronic atomization device shown in Fig. 1;

Fig. 3 is a schematic cross-sectional structural view of the atomizer shown in Fig. 2;

Fig. 4 is a schematic structural view of the atomization assembly in the atomizer shown in Fig. 2;

Fig. 5 is a schematic structural view of the first end face of the atomization assembly shown in Fig. 4;

Fig. 6 is a schematic diagram of labeling of the first end face of the porous matrix shown in Fig. 5;

Fig. 7 is a schematic side view of the atomization assembly shown in Fig. 4;

Fig. 8 is a schematic cross-sectional structure diagram of the atomization assembly shown in Fig. 7 along the viewing direction AA;

Fig. 9 is a schematic structural view of the second end surface of the atomization assembly shown in Fig. 4 .

【Detailed ways】

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first", "second", and "third" in the embodiments of the present application are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" 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. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this 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. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

This application provides an electronic atomization device 300, refer to Figure 1 to Figure 3, Figure 1 is a schematic structural diagram of an embodiment of the electronic atomization device provided by this application, Figure 2 is the atomization device in the electronic atomization device shown in Figure 1 Figure 3 is a schematic diagram of the structure of the atomizer shown in Figure 2.

As shown in FIG. 1 , the electronic atomization device 300 can be used for atomizing liquid substrates. As shown in FIG. 1 , the electronic atomization device 300 includes an interconnected atomizer 100 and a power supply 200. The atomizer 100 is used to store a liquid base and atomize the liquid base to form an aerosol that can be inhaled by the user. The substrate may be a nutrient solution or a medicinal solution, and the power supply 200 is used to supply power to the atomizer 100 so that the atomizer 100 can atomize the liquid substrate to form an aerosol.

The atomizer 100 generally includes a liquid storage bin 10, an atomization seat 20, an atomization assembly 30 and a base 40, wherein the atomization assembly 30 is arranged between the liquid storage bin 10 and the atomization seat 20, and the atomization seat 20, Both the atomizing assembly 30 and the base 40 are accommodated in the liquid storage bin 10 .

The liquid storage bin 10 is cylindrical with one end closed. The liquid storage bin 10 is provided with a liquid storage chamber 12 and an air guide tube 14 located in the liquid storage chamber 12. One end of the air guide tube 14 is connected to the closed end of the liquid storage bin 10 and passes through The closed end communicates with the outside. Wherein, the liquid storage cavity 12 is used to store the liquid matrix, and the airway 14 is used to lead out the aerosol formed after atomization, which can be introduced into the oral cavity of the user.

The atomizing seat 20 is connected to the liquid storage chamber 10 from the open end of the liquid storage chamber 10 to cover the liquid storage chamber 12 and prevent the liquid substrate stored in the liquid storage chamber 12 from leaking. The atomizing seat 20 can cover the liquid storage chamber 12 by inserting a sealing sleeve or a sealing ring at one end into the open end of the liquid storage chamber 10; The open end of the liquid tank 10 is not specifically limited in this application.

Wherein, the atomizing assembly 30 is disposed between the liquid storage bin 10 and the atomizing seat 20 . One end of the atomization assembly 30 is fixed to the atomization seat 20 , and the other end is relatively fixed to the air duct 14 .

Specifically, the atomization seat 20 is provided with an assembly hole 21 fitted with one end of the atomization assembly 30; the atomizer 100 also includes an adapter sleeve 50 and a seal 52, and the seal 52 is assembled on the adapter sleeve 50 One end of the adapter sleeve 50 is sleeved on one end of the air duct 14, the other end of the adapter sleeve 50 is sleeved on the other end of the atomization assembly 30, and the seal 52 is sealed between the air guide tube 14 and the adapter sleeve. between the cartridges 50 , and the sealing member 52 is also sealed between the atomization assembly 30 and the adapter sleeve 50 .

One end of the atomization assembly 30 is assembled in the assembly hole 21 on the atomization seat 20, and the other end is connected to the air guide tube 14. The atomization assembly 30 is provided with an air flow channel 320, and the air flow channel 320 communicates with the air guide tube 14. After atomization The formed aerosol is discharged through the airflow channel 320 and the air duct 14 .

The base 40 covers the open end of the liquid storage bin 10, the base 40 can be connected with the atomization seat 20 and/or the liquid storage bin 10, and an atomization cavity 24 is formed between the base 40 and the atomization seat 20, and the atomization The end surface of the assembly 30 facing the base 40 is located in the atomization chamber 24 , and the air flow channel 320 communicates with the atomization chamber 24 , and the atomization assembly 30 atomizes the liquid substrate in the atomization chamber 24 to form an aerosol.

The base 40 is also provided with an air inlet 42 , the air inlet 42 communicates with the atomizing chamber 24 , and the air inlet 42 is used to introduce external air into the atomizing chamber 24 . Specifically, when the user is inhaling, external air enters the atomizing chamber 24 from the air inlet 42 to provide the oxygen required for atomization and carry the formed aerosol through the airflow channel 320 and the air duct 14 to the user's oral cavity. .

In this application, referring to FIG. 4 and FIG. 5 , FIG. 4 is a schematic structural diagram of the atomization assembly in the atomizer shown in FIG. 2 , and FIG. 5 is a schematic structural diagram of the first end surface of the atomization assembly shown in FIG. 4 .

The atomizing assembly 30 includes a porous substrate 32 and a heating element 34. The porous substrate 32 has an atomizing surface and an airflow passage 320 that runs through the porous substrate 32. The inner wall 327 of the airflow passage 320 is provided with a capillary groove 322, and the capillary groove 322 extends to the mist. The atomizing surface, wherein the capillary force of the honeycomb-shaped pores is greater than that of the capillary groove 322; the heating element 34 is arranged on the atomizing surface.

That is, the capillary force of the capillary groove 322 is smaller than the capillary force of the honeycomb-shaped pores in the porous matrix 32. Specifically, the size of the capillary groove 322 is at least one order of magnitude larger than the pore size of the honeycomb-shaped pores, and the pore size of the honeycomb-shaped pores is approximately 1 μm. to 100 μm, and the size of the capillary groove 322 is roughly in the range of 0.3mm to 3mm, so under the same volume, the capillary groove 322 can absorb and accommodate more liquid than the honeycomb-like pores in the porous matrix 32, so The liquid storage capacity of the porous substrate 32 can be increased by setting the capillary groove 322, so that when the liquid supply is insufficient, the liquid stored in the capillary groove 322 can replenish liquid to the atomizing surface in time to prevent dry burning on the atomizing surface.

The porous matrix 32 can be a porous ceramic matrix or a porous glass matrix, etc., and has honeycomb-like pores. For example, the porous ceramic matrix is usually a ceramic material sintered at high temperature by components such as aggregates, binders, and pore-forming agents. It has a large number of pore structures that communicate with each other and the surface of the material, and form honeycomb-like pores. Liquid can be directed from one side to the other through the honeycomb-shaped pores inside. The pore size of the pores in the porous matrix 32 may range from 1 μm to 100 μm.

The heating element 34 is arranged on the atomizing surface, wherein the heating element 34 can be arranged on the atomizing surface, and the heating element 34 can also be buried under the atomizing surface and close to the position of the atomizing surface, or the atomizing surface is provided with a sink Groove, the heating element 34 is arranged in the sunk groove of the atomization surface, which can make the liquid on the atomization surface be atomized to generate aerosol.

In this embodiment, the porous matrix 32 is cylindrical and has a first end surface 324 and a second end surface 326 opposite to each other. The air flow channel 320 and the capillary groove 322 both extend from the first end surface 324 to the second end surface 326, wherein the first The end surface 324 is an atomizing surface.

Specifically, one end where the first end surface 324 is located is assembled in the assembly hole 21 on the atomizer seat 20, and the first end surface 324 faces the base 40, and one end where the second end surface 326 is located is connected to the adapter sleeve 50, and the second end surface 326 is toward the air guide tube 14 , and the air flow channel 320 communicates with the air guide tube 14 .

The porous matrix 32 further includes an outer wall surface 325 disposed between the first end surface 324 and the second end surface 326 , the outer wall surface 325 connects the first end surface 324 and the second end surface 326 , and the outer wall surface 325 relatively surrounds the airflow channel 320 . The outer wall surface 325 is a liquid-absorbing surface, and at least part of the outer wall surface 325 is exposed to the liquid storage chamber 12. The liquid matrix stored in the liquid storage chamber 12 is guided to the remaining surface of the porous matrix 32 through the outer wall surface 325, and then the liquid in the liquid storage chamber 12 The matrix can be guided to the first end surface 324 and the capillary groove 322 via the outer wall surface 325 .

Optionally, the second end surface 326 is a liquid-absorbing surface, or both the outer wall surface 325 and the second end surface 326 are liquid-absorbing surfaces.

Optionally, the porous matrix 32 may also be in the shape of a prism, and the side between the two ends thereof may be a liquid-absorbing surface, or one of the end surfaces may be a liquid-absorbing surface, which is not specifically limited in the present application.

In the present application, the inner side wall 327 of the air flow channel 320 is provided with at least one capillary groove 322, and one end of the capillary groove 322 extends to the first end surface 324 of the porous matrix 32, so that the liquid substrate stored in the capillary groove 322 can be supplied to the first end surface 324. liquid. For example, the inner side wall 327 can be provided with one, two or three equal number of capillary grooves 322, wherein a plurality of capillary grooves 322 can be evenly spaced or non-uniformly spaced along the circumference of the airflow channel 320.

The other end of the capillary groove 322 may extend to the second end surface 326 of the porous substrate 32 , or the other end of the capillary groove 322 does not extend to the second end surface 326 of the porous substrate 32 .

The capillary groove 322 can extend linearly along the axial direction of the airflow channel 320, or the capillary groove 322 can also extend helically along the axial direction of the airflow channel 320, or the capillary groove 322 can also bend and extend along the axial direction of the airflow channel 320. This is not specifically limited.

In this embodiment, a plurality of capillary grooves 322 are evenly distributed along the circumferential direction of the airflow passage 320, the capillary grooves 322 extend linearly along the axial direction of the airflow passage 320, and the other end of the capillary groove 322 extends to the second end of the porous matrix 32. The end surface 326 facilitates the manufacture of the capillary groove 322 on the inner wall 327 of the airflow channel 320 , so that the manufacturing process of the capillary groove 322 can be simplified.

Wherein, the capillary groove 322 defined in this application means that it has capillary action, and then the liquid substrate introduced into the capillary groove 322 from the outer wall surface 325 can be adsorbed and stored in the capillary groove 322 due to capillary action.

The average pore diameter of the pore structure inside the porous matrix 32 itself is on the order of μm, and the size of the capillary groove 322 is on the order of mm. The provision of the capillary groove 322 can increase the liquid storage capacity of the porous matrix 32 .

It can be understood that the capillary groove 322 is arranged on the inner side wall 327 of the airflow channel 320, then the capillary groove 322 is communicated with the airflow channel 320, and due to the capillary action of the capillary groove 322, the liquid substrate stored in the capillary groove 322 can also be prevented from entering the airflow Channel 320.

Furthermore, the liquid storage chamber 12 is always in a state of slight negative pressure, which is also beneficial to prevent the liquid substrate stored in the capillary groove 322 from entering the airflow channel 320 .

That is, in the present application, capillary grooves 322 are provided on the inner sidewall 327 of the airflow channel 320. Even if the capillary grooves 322 communicate with the airflow channel 320, the liquid matrix in the capillary grooves 322 can be effectively prevented from entering the airflow channel 320, thereby preventing users from The non-nebulized liquid base is drawn directly into the mouth during suction.

The heating element 34 is disposed on the first end surface 324 of the porous substrate 32 so as to atomize the liquid matrix transmitted to the first end surface 324 to generate an aerosol. The heating element 34 is arranged around the air flow channel 320 and the capillary groove 322, and then the capillary groove 322 is convenient for guiding the stored liquid matrix to the first end surface 324, so as to supplement the liquid matrix at the first end surface 324, and avoid the heating element 34 being caused by the first end surface 324. The liquid matrix of the liquid base makes heating element 34 burn dry because of insufficient liquid supply.

In a specific application scenario, before the heating element 34 works, the first end surface 324 is filled with a liquid substrate, and the capillary groove 322 is also filled with a liquid substrate. After the heating element 34 starts to atomize, it will consume the liquid substrate on the first end surface 324 If the liquid supply rate of the pore structure of the porous matrix 32 itself is lower than the consumption rate of the heating element 34 due to factors such as excessive negative pressure in the liquid storage chamber 12, it will inevitably cause the heating element 34 to burn dry due to insufficient liquid supply. It produces a burnt smell, reduces the atomization efficiency, and makes the aerosol taste bad.

The liquid matrix stored in the capillary groove 322 can be additionally replenished to the first end surface 324 to avoid insufficient liquid supply, and the liquid matrix stored in the capillary groove 322 near the first end surface 324 is replenished after the first end surface 324 , the liquid matrix stored in the far part of the capillary groove 322 from the first end surface 324 can be quickly replenished to its nearer part due to capillary action, thereby maintaining the liquid supply of the capillary groove 322 to the first end surface 324, and through the outer wall surface 325 The liquid matrix in the capillary groove 322 is constantly replenished.

Therefore, the present application sets the capillary groove 322 on the inner side wall 327 of the air flow channel 320 to increase the liquid storage capacity of the porous substrate 32, and one end of the capillary groove 322 also extends to the first end surface 324, so that the liquid substrate stored in the capillary groove 322 It can be supplied to the first end surface 324 quickly, and then supplement the liquid matrix required by the heating element 34 to avoid the occurrence of insufficient liquid supply.

Optionally, the cross-section of the capillary groove 322 along the axial direction of the airflow channel 320 may be polygonal or arc-shaped. For example, the cross section of the capillary groove 322 along the axial direction of the airflow channel 320 is semicircular, elliptical, rectangular or pentagonal, etc., which is not specifically limited in the present application.

In this embodiment, as shown in FIG. 6 , FIG. 6 is an annotated schematic diagram of the first end surface of the porous matrix shown in FIG. 5 . The capillary groove 322 includes a first groove body 321 and a second groove body 323 communicating with the first groove body 321 in the depth direction, and the second groove body 323 is arranged between the air flow channel 320 and the first groove body 321; the depth direction is The inner wall 327 points to the spacing direction of the outer wall surface 325 .

Wherein, the maximum width a of the second groove body 323 along the circumferential direction of the airflow channel 320 is smaller than the maximum width c of the first groove body 321 along the circumferential direction of the airflow channel 320 .

The axial cross section of the first groove body 321 along the airflow channel 320 can be semicircular, oval or irregular arc, etc., and the axial cross section of the second groove body 323 along the airflow channel 320 can be rectangular, trapezoidal or wavy, etc., which are not specifically limited in the present application.

In this embodiment, the cross-section of the first groove body 321 along the axial direction of the airflow passage 320 is semicircular, that is, the first groove body 321 is an arc-shaped groove, and the second groove body 323 is along the axial direction of the airflow passage 320. The cross-section is rectangular, and the second groove body 323 is a rectangular groove, so that the cross-section of the capillary groove 322 along the axial direction of the airflow channel 320 is Ω-shaped, and then the maximum width of the first groove body 321 along the circumferential direction of the airflow channel 320 c is the diameter of a semicircle, and the width a of the circumferential direction of the airflow passage 320 everywhere in the second groove body 323 is uniform, that is, the width a of the circumferential direction of the airflow passage 320 everywhere in the second groove body 323 is smaller than that of the first groove body 323 . The diameter c of the second tank body 323 .

By limiting the maximum width a of the second groove body 323 to be smaller than the maximum width c of the first groove body 321, the second groove body 323 is narrower than the first groove body 321, so as to improve the capillary through the narrower second groove body 323. The pump pressure further facilitates the liquid matrix in the capillary groove 322 to supply liquid to the first end surface 324 along the second groove body 323 , and is also more conducive to liquid locking and preventing liquid leakage.

That is to say, in this embodiment, both the rectangular width of the second groove 323 and the circular diameter of the first groove 321 can increase the capillary force of the capillary groove 322, which is beneficial for the capillary groove 322 to lock liquid and prevent leakage.

Further, the notch width of the second groove body 323 located in the airflow channel 320 is smaller than the hydraulic diameter of the airflow channel 320, wherein the notch width of the second groove body 323 is its width along the circumferential direction of the airflow channel 320, so as to greatly reduce the The friction between the aerosol in the airflow channel 320 and the liquid substrate at the notch of the second groove body 323 facilitates the flow of the aerosol and the liquid substrate in opposite directions.

Further, the width a of the second groove body 323 along the circumferential direction of the airflow channel 320 is greater than or equal to 0.57 mm and less than or equal to 0.86 mm. The minimum width a of the second groove body 323 along the circumferential direction of the airflow passage 320 is greater than or equal to 0.57 mm, and the maximum width a of the second groove body 323 along the circumferential direction of the airflow passage 320 is less than or equal to 0.86 mm.

For example, if the cross section of the second groove body 323 is trapezoidal, its minimum width is greater than or equal to 0.57 mm, and its maximum width is less than or equal to 0.86 mm.

In this embodiment, the cross section of the second groove body 323 is rectangular, and its width is uniform, so the width of the second groove body 323 can be 0.6mm, 0.65mm, 0.7mm, 0.75mm or 0.83mm.

The narrower the width of the second groove body 323 is, the greater the friction loss between the liquid matrix and the second groove body 323 is. If the width of the second groove body 323 is too wide, the capillary pump pressure of the second groove body 323 will be insufficient. Through simulation analysis and a large number of experimental verifications, when the width of the second tank 323 is in the range of 0.57mm to 0.86mm, the friction between it and the liquid matrix is small, and its capillary pump pressure is relatively high, which can make the liquid matrix along the The second tank body 323 quickly supplies liquid to the first end surface 324 .

The depth b of the second groove body 323 along the radial direction of the airflow channel 320 is greater than or equal to 0.92mm and less than or equal to 1.8mm, then the depth b of the second groove body 323 can be 0.92mm, 1.0mm, 1.2mm, 1.4mm/1.6mm or 1.8mm. The depth b of the second groove body 323 is within this range, which also makes the friction between it and the liquid matrix smaller, and its capillary pump pressure is larger, which is conducive to improving the ability of the capillary groove 322 to lock liquid and prevent leakage. .

The maximum width c of the first groove body 321 along the circumferential direction of the airflow channel 320 is greater than or equal to 0.69 mm and less than or equal to 1.03 mm.

In this embodiment, the cross section of the first groove body 321 is semicircular, so the diameter c of the first groove body 321 is greater than or equal to 0.69mm and less than or equal to 1.03mm, and the diameter c of the first groove body 321 can be 0.69mm, 0.72mm, 0.8mm, 0.9mm, 1.0mm or 1.03mm. The diameter c of the first groove body 321 within this range can make it have stronger capillary force and higher liquid permeability on the liquid matrix, which is beneficial to improve the ability of the capillary groove 322 to lock liquid and prevent liquid leakage.

Referring to Figures 7 to 9, Figure 7 is a schematic side view of the atomization assembly shown in Figure 4, Figure 8 is a schematic cross-sectional view of the atomization assembly shown in Figure 7 along the AA direction, and Figure 9 is a schematic diagram of the structure shown in Figure 4 Schematic diagram of the structure of the second end surface of the atomization component.

Furthermore, the capillary groove 322 has a first draft angle α from the first end surface 324 to the second end surface 326 , and the cross section of the capillary groove 322 along the axial direction of the airflow channel 320 gradually extends from the first end surface 324 to the second end surface 326 increase.

By limiting the capillary groove 322 to have a first draft angle α, it is beneficial for the mold for manufacturing the capillary groove 322 to be pulled out better when the porous matrix 32 is processed, and the axial cross section of the capillary groove 322 extends from the second end surface 326 to the first The gradual reduction of one end surface 324 is conducive to gradually increasing the capillary force. On the one hand, it is beneficial for the liquid to flow along the capillary groove 322 to the atomizing surface, and on the other hand, it is more conducive to the capillary groove 322 to lock liquid and prevent liquid leakage.

The first draft angle α of the capillary groove 322 ranges from 1 degree to 3 degrees, and the first draft angle can be 1 degree, 1.5 degrees, 2 degrees, 2.5 degrees or 3 degrees, etc.

The value of the first draft angle α is in the range of 1 degree to 3 degrees, which can ensure that the capillary groove 322 as a whole has strong capillary force, capillary pump pressure and liquid permeability.

Further, the airflow passage 320 has a second draft angle β from the first end surface 324 to the second end surface 326, and the radial dimension of the airflow passage 320 on the first end surface 324 is smaller than the radial dimension of the airflow passage 320 on the second end surface 326 .

By defining the airflow channel 320 to have a second draft angle β, it is beneficial for the mold for manufacturing the airflow channel 320 to be pulled out better when the porous matrix 32 is processed, and the cross section of the airflow channel 320 along the axial direction is from the first end surface 324 to the second The two end surfaces 326 gradually increase, which is beneficial for the aerosol to pass through the airflow channel 320. In the process of flowing from the first end surface 324 to the second end surface 326, the pressure loss of the airflow is gradually reduced, so as to facilitate the flow of the aerosol into the air duct 14 and reduce the Aerosol backflow.

The second draft angle β of the airflow channel 320 is in the range of 1 degree to 3 degrees, and the second draft angle may be 1 degree, 1.5 degrees, 2 degrees, 2.5 degrees or 3 degrees, etc. The value of the second draft angle is in the range of 1 degree to 3 degrees, which is beneficial to the circulation of the aerosol along the airflow channel 320 and reduces the backflow of the aerosol.

Wherein, the first draft angle α and the second draft angle β may be equal or different, which is not specifically limited in this application.

Referring to FIG. 2 again, the heating element 34 is arranged on the first end surface 324 of the porous substrate 32 and is arranged around the airflow channel 320 and the capillary groove 322, wherein the heating element 34 can be a heating film or a heating resistor, etc., which is not specifically limited in the present application.

Optionally, the heating element 34 may be in the shape of an open ring, which is arranged around the airflow channel 320 and the plurality of capillary grooves 322 to atomize the liquid matrix on the first end surface 324 .

In this embodiment, a plurality of capillary grooves 322 are distributed along the circumferential direction of the airflow channel 322 at intervals, and tooth portions 328 are formed between adjacent capillary grooves 322 . The heating element 34 is in the shape of a lotus ring. The heating element 34 includes a plurality of surrounding parts 340 connected in sequence. Each surrounding part 340 is arranged around a corresponding capillary groove 322, so that the heating area of the heating element 34 can be relatively increased, and the atomization rate can be improved. , that is, the amount of atomization that can be generated per unit time is greater, which can relatively make the atomization component 30 more sensitive and quicker in response.

Furthermore, the heating element 34 also includes a plurality of extensions 342 , each extension 342 is connected to a connecting end between two corresponding surrounding portions 340 , and the extensions 342 are also disposed on the tooth portion 328 .

Wherein, the connection end between the two surrounding parts 340 is set corresponding to the tooth part 328, and further by setting the extension part 342 to extend to the surface of the tooth part 328 on the first end surface 324, so as to facilitate atomization by the capillary groove more quickly The liquid base provided by 322 speeds up the atomization rate.

Furthermore, when the surrounding part 340 and the extension part 342 work, the capillary groove 322 also has a very obvious temperature gradient, which further makes the temperature difference of the generated aerosol larger, resulting in a more obvious difference in the taste of the aerosol. The aerosol taste experienced by the user's taste is more distinct and the experience is better.

Optionally, the heating element 34 may also include a plurality of independent heating elements, and the plurality of independent heating elements are arranged on the first end surface 324 around the airflow passage 320; or the heating element 34 may not be arranged around the airflow passage 320. This is not specifically limited.

Further, as shown in FIG. 4 , a retaining ring 329 is provided on the outer wall of the porous base 32 , and the retaining ring 329 stops in the assembly hole 21 of the atomizing seat 20 to limit the position of the atomizing assembly 30 .

Different from the situation in the prior art, the present application discloses an electronic atomization device, an atomizer and an atomization component thereof. The capillary groove is arranged on the inner side wall of the air flow channel to increase the liquid storage capacity of the porous substrate, and one end of the capillary groove also extends to the first end surface, so that the liquid substrate stored in the capillary groove can be quickly provided to the first end surface, and then replenished The liquid substrate required by the heating element can avoid dry burning caused by insufficient liquid supply.

The above is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process conversion made by using the specification and drawings of the application, or directly or indirectly used in other related technologies fields, are all included in the scope of patent protection of this application in the same way.

Claims

An atomization assembly, characterized in that the atomization assembly includes:

The porous matrix has honeycomb-like pores; the porous matrix has an atomizing surface and an airflow channel passing through the porous matrix, the inner sidewall of the airflow channel is provided with capillary grooves, and the capillary grooves extend to the atomizing surface, And the capillary force of the honeycomb-shaped pores is greater than the capillary force of the capillary groove;

The heating element is arranged on the atomizing surface.
The atomization assembly according to claim 1, wherein the porous base comprises a first end surface and a second end surface opposite to each other, and the air flow channel and the capillary groove extend from the first end surface to the The second end surface, wherein the first end surface is the atomization surface.
The atomization assembly according to claim 2, wherein the porous substrate further comprises an outer wall surface disposed between the first end surface and the second end surface, and the outer wall surface is a liquid-absorbing surface; and /or

The second end surface is a liquid-absorbing surface.
The atomization assembly according to claim 3, wherein the porous base is cylindrical.
The atomization assembly according to claim 1, wherein the cross-section of the capillary groove along the axial direction of the airflow channel is polygonal or arc-shaped.
The atomization assembly according to claim 1, wherein the capillary groove includes a first groove body and a second groove body communicating with the first groove body in the depth direction, and the second groove body is arranged at between the airflow channel and the first tank;

Wherein, the maximum width of the second groove body along the circumferential direction of the airflow channel is smaller than the maximum width of the first groove body along the circumferential direction of the airflow channel.
The atomization assembly according to claim 6, wherein the first groove body is an arc-shaped groove, and the second groove body is a rectangular groove, so that the capillary groove is along the axial direction of the airflow channel The cross-section is Ω-shaped.
The atomization assembly according to claim 6, characterized in that, the width of the second groove body along the circumferential direction of the airflow channel is greater than or equal to 0.57mm and less than or equal to 0.86mm.
The atomization assembly according to claim 8, characterized in that, the maximum width of the first groove along the circumferential direction of the airflow channel is greater than or equal to 0.69 mm and less than or equal to 1.03 mm.
The atomization assembly according to claim 8, characterized in that, the depth of the second groove along the radial direction of the airflow channel is greater than or equal to 0.92mm and less than or equal to 1.8mm.
The atomization assembly according to claim 6, characterized in that, the width of the slot of the second groove body located in the airflow channel is smaller than the hydraulic diameter of the airflow channel.
The atomization assembly according to claim 2, wherein the capillary groove has a first draft angle from the first end surface to the second end surface, and the capillary groove is along the The axial cross section gradually increases from the first end surface to the second end surface.
The atomization assembly according to claim 12, wherein the first draft angle is in the range of 1 degree to 3 degrees.
The atomization assembly according to claim 2 or 12, wherein the airflow channel has a second draft angle from the first end surface to the second end surface, and the airflow channel is in the first The radial dimension of the end surface is smaller than the radial dimension of the airflow channel on the second end surface.
The atomization assembly according to claim 14, wherein the second draft angle is in the range of 1 degree to 3 degrees.
The atomization assembly according to claim 1, wherein the heating element is arranged around the airflow channel.
The atomization assembly according to claim 16, wherein the inner wall of the air flow channel is provided with a plurality of capillary grooves, the heating element includes a plurality of surrounding parts connected in sequence, and each of the surrounding parts It is set corresponding to one capillary groove.
The atomization assembly according to claim 17, wherein teeth are formed between adjacent capillary grooves, and the heating element further includes a plurality of extensions, each of which is connected to a corresponding The connection end between the two surrounding parts, and the extension part is also arranged on the tooth part.
The atomization assembly according to claim 1, characterized in that, the outer wall of the porous base is further provided with a retaining ring.
An atomizer, comprising a liquid storage bin for storing an aerosol-generating substrate, characterized in that the atomizer includes the atomization assembly according to any one of claims 1 to 19; the porous substrate and The liquid reservoir is in fluid communication, and the heating element is used to heat the aerosol-generating substrate that atomizes the porous substrate.
An electronic atomization device, characterized in that the electronic atomization device comprises a power supply and the atomizer according to claim 20, the power supply is connected to the atomizer and supplies the atomizer with powered by.