CN216255482U

CN216255482U - Electronic atomization device, atomizer and atomization assembly thereof

Info

Publication number: CN216255482U
Application number: CN202121786461.8U
Authority: CN
Inventors: 王洪钊; 杨豪; 夏畅; 雷桂林; 崔望; 傅显钧
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-04-12
Anticipated expiration: 2031-07-30

Abstract

The application discloses electron atomizing device, atomizer and atomization component thereof. This atomizing subassembly includes: the atomizing subassembly includes: a porous matrix having honeycomb-like pores; the porous matrix is provided with an atomizing surface and an air flow channel penetrating through the porous matrix, the inner side wall of the air flow channel is provided with a capillary groove, the capillary groove extends to the atomizing surface, and the capillary acting force of the honeycomb-shaped pores is greater than that of the capillary groove; and the heating element is arranged on the atomizing surface. Through setting up capillary groove at airflow channel's inside wall, and capillary groove extends to the atomizing face, the atomizing subassembly that this application provided can supplement to the atomizing face through the liquid matrix with the capillary inslot storage to avoid supplying liquid not enough and lead to the situation of dry combustion method to take place.

Description

Electronic atomization device, atomizer and atomization assembly thereof

Technical Field

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

Background

The atomization assembly is an important component of the electronic atomization device, and conveys liquid from the liquid storage cavity to the surface of the heater through the porous medium, and the liquid is gasified into aerosol through the heater and then sucked into the mouth.

The existing atomization component winds a heating wire on an oil guide rope, and liquid is atomized by adsorbing the liquid to a heater through two ends of the oil guide rope. However, the area of the two ends of the oil guide rope is limited, the liquid adsorption capacity is low, and unsmooth liquid supply is easy to occur when the input power is high, so that dry burning, scorching and the like are caused.

SUMMERY OF THE UTILITY MODEL

The application mainly provides an electronic atomization device, an atomizer and an atomization assembly thereof, and aims to solve the problem that liquid supply of the atomization assembly is not smooth and dry burning is easy.

In order to solve the technical problem, the application adopts a technical scheme that: an atomization group is provided. The atomization assembly comprises: a porous matrix having honeycomb-like pores; the porous substrate is provided with an atomizing surface and an air flow channel penetrating through the porous substrate, the inner side wall of the air flow channel is provided with a capillary groove, the capillary groove extends to the atomizing surface, and the capillary acting force of the honeycomb-shaped pores is greater than that of the capillary groove; and the heating element is arranged on the atomizing surface.

In some embodiments, the porous matrix comprises first and second opposing end faces, the air flow channels and the capillary grooves extending from the first end face to the second end face, wherein the first end face is the atomization face.

In some embodiments, the porous matrix further comprises an outer wall surface disposed between the first end surface and the second end surface, the outer wall surface being a wicking surface; and/or

The second end face is a liquid absorbing face.

In some embodiments, the porous matrix is cylindrical.

In some embodiments, the capillary groove has a polygonal or arc cross-section in the axial direction of the air flow channel.

In some embodiments, the capillary groove includes a first groove body and a second groove body communicated with the first groove body in the depth direction, and the second groove body is disposed between the airflow channel and the first groove body;

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

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

In some embodiments, 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 0.86 mm.

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

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

In some embodiments, the second slot has a slot width smaller than the hydraulic diameter of the airflow channel.

In some embodiments, the capillary grooves have a first draft angle from the first end face to the second end face, and the cross section of the capillary grooves along the axial direction of the air flow channel gradually increases from the first end face to the second end face.

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 face to the second end face, and a radial dimension of the airflow channel at the first end face is smaller than a radial dimension of the airflow channel at the second end face.

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

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

In some embodiments, the inner side wall of the air flow channel is provided with a plurality of capillary grooves, the heating element comprises a plurality of surrounding parts connected in sequence, and each surrounding part is arranged to surround one capillary groove.

In some embodiments, a tooth portion is formed between the adjacent capillary grooves, the heating element further includes a plurality of outward extensions, each of the outward extensions is connected to the connecting end between the corresponding two surrounding portions, and the outward extensions are further disposed on the tooth portion.

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

In order to solve the above technical problem, another technical solution adopted by the present application is: an atomizer is provided. The atomizer comprises a reservoir for storing an aerosol-generating substrate and an atomizing assembly as described above, the porous substrate being in fluid communication with the reservoir, and the heating element being for heating and atomizing the aerosol-generating substrate of the porous substrate.

In order to solve the above technical problem, another technical solution adopted by the present application is: an electronic atomizer is provided. The electronic atomization device comprises a power supply and the atomizer, wherein the power supply is connected with the atomizer and supplies power to the atomizer.

The beneficial effect of this application is: being different from the situation of the prior art, the application discloses an electronic atomization device, an atomizer and an atomization assembly thereof. The capillary groove is arranged on the inner side wall of the air flow channel, so that the liquid storage amount of the porous base body is increased, and the capillary groove also extends to the atomizing surface, so that the liquid base material stored in the capillary groove can be quickly provided to the atomizing surface, the liquid base material required by the heating element is further supplemented, and the condition that dry burning is caused due to insufficient liquid supply is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:

FIG. 1 is a schematic structural diagram of an embodiment of an electronic atomizer provided herein;

FIG. 2 is a schematic view showing the structure of an atomizer in the electronic atomizer shown in FIG. 1;

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

FIG. 4 is a schematic diagram of the construction of the atomizing assembly of the atomizer shown in FIG. 2;

FIG. 5 is a schematic view of the first end face of the atomizing assembly of FIG. 4;

FIG. 6 is a labeled schematic view of a first end face of the porous substrate shown in FIG. 5;

FIG. 7 is a side view of the atomizing assembly of FIG. 4;

FIG. 8 is a schematic cross-sectional view of the atomizing assembly of FIG. 7 taken along the direction AA;

fig. 9 is a schematic view of the second end face of the atomizing assembly of fig. 4.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, 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 can be included in at least one embodiment of the application. 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an embodiment of an electronic atomization apparatus provided in the present application, fig. 2 is a schematic structural diagram of an atomizer in the electronic atomization apparatus shown in fig. 1, and fig. 3 is a schematic cross-sectional structural diagram of the atomizer shown in fig. 2.

As shown in fig. 1, the electronic atomizer 300 may be used for atomizing a liquid substrate. As shown in fig. 1, the electronic atomizer 300 includes an atomizer 100 and a power supply 200 connected to each other, the atomizer 100 being configured to store a liquid substrate, which may be a nutrient solution, a drug solution, or the like, and atomize the liquid substrate to form an aerosol for inhalation by a user, and the power supply 200 being configured to supply power to the atomizer 100 so that the atomizer 100 can atomize the liquid substrate to form the aerosol.

The atomizer 100 generally comprises a liquid storage bin 10, an atomizing base 20, an atomizing assembly 30 and a base 40, wherein the atomizing assembly 30 is disposed between the liquid storage bin 10 and the atomizing base 20, the atomizing assembly 30 and the base 40 are all contained in the liquid storage bin 10.

Stock solution storehouse 10 is one end confined tube-shape, is equipped with stock solution chamber 12 and the air duct 14 that is located stock solution chamber 12 in the stock solution storehouse 10, and the one end of air duct 14 is connected in the blind end of stock solution storehouse 10 and outside through this blind end intercommunication. Wherein the liquid storage cavity 12 is used for storing liquid substrate, and the air duct 14 is used for guiding out aerosol formed after atomization, and the aerosol can be guided into the oral cavity of a user.

The atomizing base 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, so as to prevent the liquid matrix stored in the liquid storage chamber 12 from leaking. The atomizing base 20 can be embedded into the open end of the liquid storage chamber 10 by sleeving a sealing sleeve or a sealing ring at one end, and then the liquid storage chamber 12 is sealed; alternatively, the atomizing base 20 is connected to the open end of the reservoir 10 by gluing, screwing, or the like, which is not particularly limited in this application.

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

Specifically, the atomizing base 20 is provided with an assembling hole 21 which is assembled with one end of the atomizing assembly 30; the nebulizer 100 further includes an adapter sleeve 50 and a sealing member 52, wherein the sealing member 52 is assembled in the adapter sleeve 50, one end of the adapter sleeve 50 is sleeved on one end of the air tube 14, the other end of the adapter sleeve 50 is sleeved on the other end of the nebulizing assembly 30, the sealing member 52 is sealed between the air tube 14 and the adapter sleeve 50, and the sealing member 52 is further sealed between the nebulizing assembly 30 and the adapter sleeve 50.

One end of the atomizing assembly 30 is assembled in the assembling hole 21 of the atomizing base 20, the other end of the atomizing assembly is connected with the air duct 14, the atomizing assembly 30 is provided with an air flow channel 320, the air flow channel 320 is communicated with the air duct 14, and the aerosol formed after atomization is guided out through the air flow 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 atomizing base 20 and/or the liquid storage bin 10, an atomizing cavity 24 is formed between the base 40 and the atomizing base 20, the end surface of the atomizing assembly 30 facing the base 40 is located in the atomizing cavity 24, the air flow channel 320 is communicated with the atomizing cavity 24, and the atomizing assembly 30 atomizes the liquid substrate in the atomizing cavity 24 to form aerosol.

The base 40 is further provided with an air inlet hole 42, the air inlet hole 42 is communicated with the atomizing cavity 24, and the air inlet hole 42 is used for introducing external air into the atomizing cavity 24. Specifically, in the user's inhalation state, outside air enters the nebulizing chamber 24 from the air inlet hole 42 to provide oxygen required for nebulization and to carry the formed aerosol to the user's mouth via the air flow channel 320 and the airway tube 14 in sequence.

Referring to fig. 4 and 5, fig. 4 is a schematic view of an atomizing assembly of the atomizer shown in fig. 2, and fig. 5 is a schematic view of a first end surface of the atomizing 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 air flow channel 320 penetrating through the porous substrate 32, an inner side wall 327 of the air flow channel 320 is provided with a capillary groove 322, the capillary groove 322 extends to 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 disposed on the atomization surface.

That is, the capillary force of the capillary grooves 322 is smaller than that of the honeycomb pores in the porous substrate 32, specifically, the size of the capillary grooves 322 is at least an order of magnitude larger than the pore size of the honeycomb pores, the pore size of the honeycomb pores is approximately in the range of 1 μm to 100 μm, and the size of the capillary grooves 322 is approximately in the range of 0.3mm to 3mm, so that the capillary grooves 322 can absorb and contain more liquid than the honeycomb pores in the porous substrate 32 under the same volume, and thus the liquid storage amount of the porous substrate 32 can be increased by arranging the capillary grooves 322, so that the liquid stored in the capillary grooves 322 can timely supplement the liquid to the atomization surface at the moment of insufficient liquid supply, and dry burning on the atomization surface can be prevented.

The porous substrate 32 may be a porous ceramic substrate, a porous glass substrate, or the like, having honeycomb-like pores. For example, the porous ceramic matrix is a ceramic material sintered at a high temperature by using components such as aggregates, binders, pore formers, and the like, and the porous ceramic matrix has a large number of pore structures therein, which are communicated with each other and with the surface of the material, and form honeycomb-shaped pores, so that liquid can be guided from one side to the other side through the honeycomb-shaped pores therein. The pores in the porous matrix 32 may have a pore size ranging from 1 μm to 100 μm.

The heating element 34 is disposed on the atomization surface, wherein the heating element 34 can be disposed on the atomization surface, the heating element 34 can also be embedded under the atomization surface and close to the atomization surface, or the atomization surface is disposed with a sinking groove, the heating element 34 is disposed in the sinking groove of the atomization surface, and the heating element and the atomization surface can atomize the liquid on the atomization surface to generate aerosol.

In this embodiment, the porous substrate 32 is cylindrical and has a first end surface 324 and a second end surface 326 opposite to each other, the airflow channels 320 and the capillary grooves 322 extend from the first end surface 324 to the second end surface 326, wherein the first end surface 324 is an atomizing surface.

Specifically, the end where the first end face 324 is located is assembled to the assembling hole 21 on the atomizing base 20, the first end face 324 faces the base 40, the end where the second end face 326 is located is connected to the adapter sleeve 50, the second end face 326 faces the air duct 14, and the air flow channel 320 is communicated with the air duct 14.

The porous matrix 32 further includes an outer wall 325 disposed between the first end face 324 and the second end face 326, the outer wall 325 connects the first end face 324 and the second end face 326, and the outer wall 325 oppositely encloses the gas flow channel 320. Outer wall 325 is a wicking surface, with at least a portion of outer wall 325 being exposed to reservoir 12, and liquid matrix stored in reservoir 12 being directed to the remaining surface of porous substrate 32 via outer wall 325, and in turn, liquid matrix in reservoir 12 being directed to first end 324 and capillary channel 322 via outer wall 325.

Alternatively, the second end face 326 is a liquid-absorbing face, or both the outer wall face 325 and the second end face 326 are liquid-absorbing faces.

Alternatively, the porous base 32 may have a prism shape, and the side surface thereof between the two end surfaces may be a liquid absorbing surface, or one of the end surfaces may be a liquid absorbing surface, which is not particularly limited in the present application.

The inner sidewall 327 of the air flow channel 320 is provided with at least one capillary channel 322, and one end of the capillary channel 322 extends to the first end face 324 of the porous substrate 32, so that the liquid medium stored in the capillary channel 322 supplies liquid to the first end face 324. For example, the inner sidewall 327 may be provided with one, two, or three capillary grooves 322, wherein the plurality of capillary grooves 322 may be evenly spaced or unevenly spaced along the circumference of the air flow channel 320.

The other end of the capillary channels 322 can extend to the second end face 326 of the porous base 32 or the other end of the capillary channels 322 can not extend to the second end face 326 of the porous base 32.

The capillary groove 322 may extend linearly along the axial direction of the air flow channel 320, or the capillary groove 322 may extend spirally along the axial direction of the air flow channel 320, or the capillary groove 322 may extend in a bent manner along the axial direction of the air flow channel 320, which is not particularly limited in this application.

In this embodiment, the capillary grooves 322 are uniformly distributed along the circumferential direction of the air flow channel 320 at intervals, the capillary grooves 322 extend linearly along the axial direction of the air flow channel 320, and the other ends of the capillary grooves 322 extend to the second end face 326 of the porous substrate 32, so that the capillary grooves 322 are conveniently manufactured on the inner side wall 327 of the air flow channel 320, and the manufacturing process of the capillary grooves 322 can be simplified.

The capillary groove 322 defined herein means that it has a capillary action, and the liquid matrix introduced from the outer wall 325 into the capillary groove 322 can be absorbed and stored in the capillary groove 322 due to the capillary action.

The average pore diameter of the pore structure inside the porous matrix 32 itself is on the order of μm, the size of the capillary groove 322 is on the order of mm, and the size of the capillary groove 322 is at least one order of magnitude larger than the pore structure size of the porous matrix 32, so that the liquid storage amount of the porous matrix 32 can be increased by providing the capillary groove 322 on the porous matrix 32.

It will be appreciated that capillary groove 322 is disposed in inner sidewall 327 of gas flow channel 320 such that capillary groove 322 is in communication with gas flow channel 320 and, due to the capillary action of capillary groove 322, prevents liquid matrix stored in capillary groove 322 from entering gas flow channel 320.

Further, the liquid storage chamber 12 is usually under a slight negative pressure, which is further beneficial to prevent the liquid matrix stored in the capillary groove 322 from entering the air flow channel 320.

That is, in the present application, the capillary groove 322 is disposed on the inner sidewall 327 of the air flow channel 320, so that even if the capillary groove 322 is communicated with the air flow channel 320, the liquid matrix in the capillary groove 322 can be effectively prevented from entering the air flow channel 320, and further, the user can be prevented from directly sucking the liquid matrix that is not atomized into the oral cavity during the suction process.

The heat generating element 34 is disposed at the first end face 324 of the porous substrate 32 such that the liquid substrate conducted to the first end face 324 can be atomized to generate an aerosol. The heat-generating element 34 is disposed around the air flow channel 320 and the capillary groove 322, so that the capillary groove 322 guides the stored liquid matrix to the first end surface 324 to replenish the liquid matrix at the first end surface 324, and dry burning of the heat-generating element 34 due to insufficient liquid supply of the liquid matrix on the first end surface 324 of the heat-generating element 34 is avoided.

In a specific application scenario, before the heating element 34 works, the first end surface 324 is saturated with the liquid substrate, the capillary groove 322 is also filled with the liquid substrate, and after the heating element 34 starts to atomize, the liquid substrate on the first end surface 324 is consumed, if the liquid supply rate of the pore structure of the porous substrate 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 cavity 12, the heating element 34 is inevitably burnt due to insufficient liquid supply, the atomization efficiency is reduced, and the taste of the aerosol is poor.

The liquid matrix stored in the capillary groove 322 can be additionally replenished to the first end face 324 to avoid the situation of insufficient liquid supply, and after the liquid matrix stored in the part of the capillary groove 322 near the first end face 324 is replenished to the first end face 324, the liquid matrix stored in the part of the capillary groove 322 far from the first end face 324 can be quickly replenished to the near part thereof due to capillary action, so that the liquid supply of the capillary groove 322 to the first end face 324 can be maintained, and the liquid matrix passing through the outer wall 325 is continuously replenished to the capillary groove 322.

Therefore, the capillary groove 322 is disposed on the inner sidewall 327 of the air flow channel 320 to increase the liquid storage amount of the porous substrate 32, and one end of the capillary groove 322 further extends to the first end surface 324, so that the liquid substrate stored in the capillary groove 322 can be rapidly provided to the first end surface 324, and then the liquid substrate required by the heat generating element 34 can be supplemented, thereby avoiding the occurrence of the insufficient liquid supply condition.

Alternatively, the capillary groove 322 may have a polygonal or arc-shaped cross-section in the axial direction of the gas flow passage 320. For example, the cross section of the capillary groove 322 along the axial direction of the air flow channel 320 is semicircular, elliptical, rectangular, pentagonal, or the like, which is not particularly limited in the present application.

In this example, as shown in fig. 6, fig. 6 is a schematic illustration of the first end face of the porous substrate shown in fig. 5. The capillary groove 322 comprises a first groove body 321 and a second groove body 323 communicated with the first groove 321 in the depth direction, and the second groove body 323 is arranged between the airflow channel 320 and the first groove body 321; the depth direction is a direction in which the inner wall 327 points toward the outer wall 325.

The maximum width a of the second groove 323 in the circumferential direction of the gas flow path 320 is smaller than the maximum width c of the first groove 321 in the circumferential direction of the gas flow path 320.

The cross section of the first groove 321 in the axial direction of the air flow channel 320 may be semicircular, elliptical, irregular arc, or the like, and the cross section of the second groove 323 in the axial direction of the air flow channel 320 may be rectangular, trapezoidal, wavy, or the like, which is not particularly limited in this application.

In this embodiment, the cross section of the first groove body 321 in the axial direction of the airflow channel 320 is semicircular, that is, the first groove body 321 is an arc-shaped groove, the cross section of the second groove body 323 in the axial direction of the airflow channel 320 is rectangular, and the second groove body 323 is a rectangular groove, so that the cross section of the capillary groove 322 in the axial direction of the airflow channel 320 is Ω -shaped, further, the maximum width c of each position of the first groove body 321 in the circumferential direction of the airflow channel 320 is a semicircular diameter, the width a of each position of the second groove body 323 in the circumferential direction of the airflow channel 320 is uniform, that is, the width a of each position of the second groove body 323 in the circumferential direction of the airflow channel 320 is smaller than the diameter c of the second groove 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, and further limiting the second groove body 323 to be narrower than the first groove body 321, the capillary pump pressure is increased through the narrower second groove body 323, and further, the liquid matrix in the capillary groove 322 can be favorably supplied to the first end face 324 along the second groove body 323, and simultaneously, liquid locking and liquid leakage prevention are further favorably realized.

That is, 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, thereby facilitating the locking of the capillary groove 322 and preventing liquid leakage.

Further, the second grooves 323 are located at the width of the slot of the air flow channel 320, which is smaller than the hydraulic diameter of the air flow channel 320, wherein the width of the slot of the second grooves 323 is its width in the circumferential direction of the air flow channel 320, to greatly reduce the friction between the aerosol passing through the air flow channel 320 and the liquid substrate at the slot of the second grooves 323, so that the aerosol and the liquid substrate flow in opposite directions to each other.

Further, the width a of the second groove 323 in the circumferential direction of the gas flow passage 320 is 0.57mm or more and 0.86mm or less. The minimum width a of the second groove 323 in the circumferential direction of the gas flow passage 320 is equal to or greater than 0.57mm, and the maximum width a of the second groove 323 in the circumferential direction of the gas flow passage 320 is equal to or less than 0.86 mm.

For example, the second groove 323 has a trapezoidal cross section, and has a minimum width of 0.57mm or more and a maximum width of 0.86mm or less.

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

The narrower the width of the second groove 323, the greater the friction loss between the liquid medium and the second groove 323. Too wide a width of the second groove 323 may result in insufficient capillary pressure of the second groove 323. Through simulation analysis and a large number of experiments, when the width of the second groove body 323 ranges from 0.57mm to 0.86mm, the friction force between the second groove body 323 and the liquid matrix is small, and the capillary pump pressure is large, so that the liquid matrix can be rapidly supplied to the first end face 324 along the second groove body 323.

The depth b of the second groove 323 in the radial direction of the gas flow passage 320 is not less than 0.92mm and not more than 1.8mm, and the depth b of the second groove 323 may be 0.92mm, 1.0mm, 1.2mm, 1.4mm/1.6mm, or 1.8 mm. The depth b of the second groove body 323 is within the range, so that the friction force between the second groove body 323 and the liquid matrix is small, the capillary pump pressure is high, and the liquid locking and leakage prevention capability of the capillary groove 322 is improved.

The maximum width c of the first groove 321 in the circumferential direction of the airflow passage 320 is 0.69mm or more and 1.03mm or less.

In this embodiment, the cross section of the first groove 321 is semicircular, and then the diameter c of the first groove 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 321 may be 0.69mm, 0.72mm, 0.8mm, 0.9mm, 1.0mm or 1.03 mm. The diameter c of the first groove 321 within this range can provide a stronger capillary force and a higher liquid permeability for the liquid substrate, which is beneficial to improving the liquid locking and leakage prevention capability of the capillary groove 322.

Referring to fig. 7 to 9, fig. 7 is a side view of the atomizing assembly shown in fig. 4, fig. 8 is a cross-sectional view of the atomizing assembly shown in fig. 7 along the AA direction, and fig. 9 is a structural view of the second end surface of the atomizing assembly shown in fig. 4.

Further, the capillary groove 322 has a first draft angle α from the first end face 324 to the second end face 326, and the cross section of the capillary groove 322 in the axial direction of the air flow passage 320 gradually increases from the first end face 324 to the second end face 326.

The first draft angle alpha of the capillary groove 322 is defined, so that the mold for manufacturing the capillary groove 322 during processing of the porous substrate 32 can be better pulled out, the cross section of the capillary groove 322 in the axial direction is gradually reduced from the second end face 326 to the first end face 324, the capillary force is gradually improved, on one hand, the liquid can flow to the atomizing surface along the capillary groove 322, on the other hand, the liquid locking of the capillary groove 322 is better facilitated, and the liquid leakage is prevented.

The first draft angle α of the capillary groove 322 is in the range of 1 degree to 3 degrees, and the first draft angle may be 1 degree, 1.5 degrees, 2 degrees, 2.5 degrees, 3 degrees, or the like.

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

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

The second draft angle β of the airflow channel 320 facilitates better extraction of the mold for manufacturing the airflow channel 320 when the porous substrate 32 is processed, and the cross section of the airflow channel 320 in the axial direction gradually increases from the first end face 324 to the second end face 326, which facilitates gradual reduction of the airflow pressure loss of the aerosol during flowing from the first end face 324 to the second end face 326 through the airflow channel 320, so as to facilitate flowing of the aerosol to the airway tube 14 and reduce backflow of the aerosol.

The second draft angle β of the air flow 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, 3 degrees, or the like. The second draft angle has a value in the range of 1 to 3 degrees, which facilitates the aerosol to flow along the airflow channel 320 and reduces the backflow of the aerosol.

The first draft angle α and the second draft angle β may be equal or different, and the application does not specifically limit this.

Referring to fig. 2 again, the heat generating element 34 is disposed on the first end face 324 of the porous substrate 32 and surrounds the air flow channel 320 and the capillary slot 322, wherein the heat generating element 34 may be a heat generating film or a heat generating resistor, and the like, which is not limited in this application.

Alternatively, the heating element 34 may be in the form of an open ring disposed around the air flow channel 320 and the plurality of capillary channels 322 to atomize the liquid matrix of the first end face 324.

In this embodiment, the plurality of capillary grooves 322 are spaced apart in the circumferential direction of the air flow passage 322, and teeth 328 are formed between adjacent capillary grooves 322. The heating element 34 is in a lotus ring shape, the heating element 34 includes a plurality of surrounding parts 340 connected in sequence, and each surrounding part 340 is arranged corresponding to one capillary groove 322 in a surrounding manner, so that the heating area of the heating element 34 can be increased relatively, the atomization rate is further improved, that is, the atomization amount generated in unit time is more, the atomization assembly 30 is more sensitive relatively, and the reaction is quicker.

Further, the heating element 34 further includes a plurality of outer extensions 342, each outer extension 342 is connected to the connection end between the two corresponding surrounding portions 340, and the outer extensions 342 are further disposed on the teeth 328.

Wherein the connection end between the two surrounding portions 340 is disposed corresponding to the tooth portion 328, and further wherein the extension portion 342 is disposed to extend to the surface of the tooth portion 328 on the first end face 324, so as to more rapidly atomize the liquid matrix provided by the capillary groove 322, thereby increasing the atomization rate.

Further, when the surrounding portion 340 and the extending portion 342 work, the capillary groove 322 also has a very obvious temperature gradient, and further the temperature difference of the generated aerosol is relatively large, so that the taste of the aerosol has a more obvious difference, and the user feels the taste of the aerosol more clearly and experiences better.

Optionally, the heat generating element 34 may further include a plurality of independent heat generating members disposed on the first end surface 324 around the airflow channel 320; alternatively, the heat generating element 34 may not be disposed around the air flow channel 320, and the present application is not limited thereto.

Further, as shown in fig. 4, the outer wall surface of the porous base 32 is further provided with a stop ring 329, and the stop ring 329 stops in the assembling hole 21 of the atomizing base 20, so as to limit the atomizing assembly 30.

Being different from the situation of the prior art, the application discloses an electronic atomization device, an atomizer and an atomization assembly thereof. The capillary groove is arranged on the inner side wall of the air flow channel, so that the liquid storage amount of the porous base body is increased, one end of the capillary groove is extended to the first end face, the liquid base material stored in the capillary groove can be rapidly supplied to the first end face, the liquid base material required by the heating element is supplemented, and the situation that dry burning is caused due to insufficient liquid supply is avoided.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims

1. An atomizing assembly, comprising:

a porous matrix having honeycomb-like pores; the porous substrate is provided with an atomizing surface and an air flow channel penetrating through the porous substrate, the inner side wall of the air flow channel is provided with a capillary groove, the capillary groove extends to the atomizing surface, and the capillary acting force of the honeycomb-shaped pores is greater than that of the capillary groove;

and the heating element is arranged on the atomizing surface.

2. The atomizing assembly of claim 1, wherein the porous substrate comprises first and second opposing end faces, the gas flow channels and the capillary channels extending from the first end face to the second end face, wherein the first end face is the atomizing face.

3. The atomizing assembly of claim 2, wherein the porous substrate further comprises an outer wall surface disposed between the first end surface and the second end surface, the outer wall surface being an absorption surface; and/or

The second end face is a liquid absorbing face.

4. The atomizing assembly of claim 3, wherein the porous substrate is cylindrical.

5. The atomizing assembly of claim 1, wherein the capillary channel has a polygonal or arcuate cross-section in an axial direction of the air flow channel.

6. The atomizing assembly according to claim 1, wherein the capillary groove includes a first groove body and a second groove body communicated with the first groove body in a depth direction, and the second groove body is disposed between the airflow channel and the first groove body;

7. The atomizing assembly of claim 6, wherein the first slot body is an arc-shaped slot, and the second slot body is a rectangular slot, so that the capillary slot has an omega-shaped cross section along the axial direction of the air flow channel.

8. The atomizing assembly of claim 6, wherein the width of the second slot along the circumferential direction of the air flow channel is greater than or equal to 0.57mm and less than or equal to 0.86 mm.

9. The atomizing assembly of claim 8, wherein a maximum width of the first slot body along a circumferential direction of the air flow channel is greater than or equal to 0.69mm and less than or equal to 1.03 mm.

10. The atomizing assembly of claim 8, wherein the depth of the second slot along the radial direction of the air flow channel is greater than or equal to 0.92mm and less than or equal to 1.8 mm.

11. The atomizing assembly of claim 6, wherein the second slot has a slot width at the air flow channel that is less than the hydraulic diameter of the air flow channel.

12. The atomizing assembly of claim 2, wherein the capillary channels have a first draft angle from the first end face to the second end face, and the capillary channels gradually increase in cross-section in an axial direction of the air flow channel from the first end face to the second end face.

13. The atomizing assembly of claim 12, wherein the first draft angle is in a range of 1 degree to 3 degrees.

14. The atomizing assembly of claim 2 or 12, wherein the air flow channel has a second draft angle from the first end face to the second end face, and a radial dimension of the air flow channel at the first end face is less than a radial dimension of the air flow channel at the second end face.

15. The atomizing assembly of claim 14, wherein the second draft angle is in a range of 1 degree to 3 degrees.

16. The atomizing assembly of claim 1, wherein said heat-generating element is disposed about said airflow passageway.

17. The atomizing assembly of claim 16, wherein the inner sidewall of the air flow channel is provided with a plurality of capillary grooves, and the heat generating element includes a plurality of surrounding portions connected in series, each surrounding portion being provided corresponding to one of the capillary grooves.

18. The atomizing assembly of claim 17, wherein a tooth portion is formed between adjacent ones of said capillary grooves, said heating element further includes a plurality of outwardly extending portions, each of said outwardly extending portions being connected to a connecting end between a corresponding one of said circumferential portions, and said outwardly extending portions being further provided in said tooth portion.

19. The atomizing assembly of claim 1, wherein the outer wall surface of the porous substrate is further provided with a retaining ring.

20. A nebuliser comprising a reservoir for storing an aerosol-generating substrate, wherein the nebuliser comprises a nebulising assembly according to any one of claims 1 to 19; the porous substrate is in fluid communication with the reservoir, and the heating element is configured to heat and atomize the aerosol-generating substrate of the porous substrate.

21. An electronic atomizer device, comprising a power source and an atomizer according to claim 20, said power source being connected to and supplying power to said atomizer.