Electronic atomization device, atomizer and atomization component thereof

Abstract

The present application discloses an electronic atomization device, an atomizer and an atomization component thereof. The atomization component comprises: the atomization component comprises: a porous matrix having honeycomb-shaped pores; the porous matrix having an atomization surface and an airflow channel penetrating the porous matrix, the inner side wall of the airflow channel is provided with a capillary groove, 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; a heating element is arranged on the atomization surface. By arranging the capillary groove on the inner side wall of the airflow channel, and the capillary groove extends to the atomization surface, the atomization component provided by the present application can replenish the liquid matrix stored in the capillary groove to the atomization surface to avoid the occurrence of dry burning due to insufficient liquid supply.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and in particular to an electronic atomization device, an atomizer and an atomization component thereof. Background Art

[0002] The atomization component is an important component of the electronic atomization device. It transfers the liquid from the liquid storage chamber to the heater surface through a porous medium, and the heater heats the liquid to vaporize it into an aerosol that is inhaled into the mouth.

[0003] The existing atomization assembly is to wind the heating wire around the oil guide rope, and absorb the liquid to the heater through the two ends of the oil guide rope to atomize the liquid. However, due to the limited area at both ends of the oil guide rope, the liquid absorption capacity is low. When the input power is large, it is easy to cause poor liquid supply, resulting in dry burning, burning and other phenomena. Summary of the invention

[0004] 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 easily dry-burned due to poor liquid supply.

[0005] 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 substrate having honeycomb-shaped pores; the porous substrate has an atomization surface and an air flow channel penetrating the porous substrate, the inner side wall of the air flow channel is provided with a capillary groove, 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; a heating element is arranged on the atomization surface.

[0006] In some embodiments, the porous matrix includes a first end surface and a second end surface opposite to each other, the air flow channel and the capillary groove extend from the first end surface to the second end surface, and the first end surface is the atomization surface.

[0007] 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 liquid absorption surface; and / or

[0008] The second end surface is a liquid absorption surface.

[0009] In some embodiments, the porous matrix is ​​cylindrical.

[0010] In some embodiments, a cross-section of the capillary groove along the axial direction of the airflow channel is polygonal or arc-shaped.

[0011] In some embodiments, the capillary groove includes a first groove body and a second groove body connected to the first groove in the depth direction, and the second groove body is arranged between the air flow channel and the first groove body;

[0012] Wherein, the maximum width of the second slot body along the circumference of the airflow channel is smaller than the maximum width of the first slot body along the circumference of the airflow channel.

[0013] In some embodiments, the first groove body is an arc-shaped 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.

[0014] In some embodiments, a width of the second groove body along the circumferential direction of the air flow channel is greater than or equal to 0.57 mm and less than or equal to 0.86 mm.

[0015] In some embodiments, a maximum width of the first groove body along the circumference of the airflow channel is greater than or equal to 0.69 mm and less than or equal to 1.03 mm.

[0016] In some embodiments, a depth of the second groove body along the radial direction of the airflow channel is greater than or equal to 0.92 mm and less than or equal to 1.8 mm.

[0017] In some embodiments, the slot width of the second slot body located in the airflow channel is smaller than the hydraulic diameter of the airflow channel.

[0018] In some embodiments, the capillary groove has a first draft angle from the first end surface to the second end surface, and a cross section of the capillary groove along the axial direction of the airflow channel gradually increases from the first end surface to the second end surface.

[0019] In some embodiments, the first draft angle is in a range of 1 degree to 3 degrees.

[0020] In some embodiments, the airflow channel has a second draft angle from the first end surface to the second end surface, and a radial dimension of the airflow channel at the first end surface is smaller than a radial dimension of the airflow channel at the second end surface.

[0021] In some embodiments, the second draft angle is in a range from 1 degree to 3 degrees.

[0022] In some embodiments, the heating element is disposed around the air flow channel.

[0023] In some embodiments, the inner wall of the airflow channel is provided with a plurality of the capillary grooves, and the heating element includes a plurality of surrounding parts connected in sequence, and each of the surrounding parts is arranged around a corresponding capillary groove.

[0024] In some embodiments, teeth are formed between adjacent capillary grooves, and the heating element further includes a plurality of extensions, each of which is connected to a connecting end between two corresponding surrounding portions, and the extension is also disposed on the teeth.

[0025] In some embodiments, a retaining ring is further provided on the outer wall surface of the porous matrix.

[0026] 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 tank for storing an aerosol-generating substrate and an atomizing assembly as described above, the porous substrate is in fluid communication with the liquid storage tank, and the heating element is used to heat and atomize the aerosol-generating substrate of the porous substrate.

[0027] 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 comprises a power supply and the atomizer as described above, wherein the power supply is connected to the atomizer and supplies power to the atomizer.

[0028] The beneficial effect of the present application is that, different from the prior art, the present application discloses an electronic atomization device, an atomizer and an atomization assembly thereof. By setting a capillary groove on the inner wall of the airflow channel to increase the liquid storage capacity of the porous matrix, and the capillary groove also extends to the atomization surface, so that the liquid matrix stored in the capillary groove can be quickly provided to the atomization surface, and then replenish the liquid matrix required by the heating element, avoiding the occurrence of dry burning caused by insufficient liquid supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0030] Figure 1 It is a structural schematic diagram of an embodiment of the electronic atomization device provided by the present application;

[0031] Figure 2 yes Figure 1 A schematic diagram of the structure of an atomizer in the electronic atomization device shown;

[0032] Figure 3 yes Figure 2 A schematic cross-sectional view of the atomizer shown;

[0033] Figure 4 yes Figure 2 A schematic diagram of the structure of the atomizing assembly in the atomizer shown;

[0034] Figure 5 yes Figure 4 A schematic structural diagram of a first end surface of the atomizing assembly shown;

[0035] Figure 6 yes Figure 5 A labeled schematic diagram of a first end surface of the porous substrate shown;

[0036] Figure 7 yes Figure 4 A schematic diagram of the side structure of the atomization assembly shown;

[0037] Figure 8 yes Figure 7 The schematic cross-sectional structure diagram of the atomization assembly shown along the AA viewing direction;

[0038] Fig. 9 yes Figure 4 A schematic structural diagram of the second end surface of the atomization assembly is shown. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. 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 steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The present application provides an electronic atomization device 300, see Figures 1 to 3 , Figure 1is a structural schematic diagram of an embodiment of an electronic atomization device provided by the present application, Figure 2 yes Figure 1 The schematic diagram of the structure of the atomizer in the electronic atomization device shown in FIG. Figure 3 yes Figure 2 A schematic cross-sectional view of the atomizer is shown.

[0043] like Figure 1 As shown, the electronic atomization device 300 can be used for atomization of liquid substrates. Figure 1 As shown, the electronic atomization device 300 includes an interconnected atomizer 100 and a power supply 200. The atomizer 100 is used to store a liquid matrix and atomize the liquid matrix to form an aerosol that can be inhaled by a user. The liquid matrix can be a nutrient solution or a medicinal solution, etc. The power supply 200 is used to supply power to the atomizer 100 so that the atomizer 100 can atomize the liquid matrix to form an aerosol.

[0044] The atomizer 100 generally includes a liquid storage tank 10 , an atomizer seat 20 , an atomizer assembly 30 and a base 40 , wherein the atomizer assembly 30 is disposed between the liquid storage tank 10 and the atomizer seat 20 , and the atomizer seat 20 , the atomizer assembly 30 and the base 40 are all accommodated in the liquid storage tank 10 .

[0045] The liquid storage tank 10 is in the shape of a cylinder with one end closed, and is provided with a liquid storage cavity 12 and an air guide tube 14 located in the liquid storage cavity 12, one end of the air guide tube 14 is connected to the closed end of the liquid storage tank 10 and communicates with the outside through the closed end. The liquid storage cavity 12 is used to store liquid matrix, and the air guide tube 14 is used to guide the aerosol formed after atomization, which can be introduced into the user's mouth, etc.

[0046] The atomizer seat 20 is connected to the liquid storage tank 10 from the open end of the liquid storage tank 10 to cover the liquid storage cavity 12 to prevent leakage of the liquid matrix stored in the liquid storage cavity 12. The atomizer seat 20 can be embedded in the open end of the liquid storage tank 10 by sleeved with a sealing sleeve or a sealing ring at one end, thereby covering the liquid storage cavity 12; or, the atomizer seat 20 is connected to the open end of the liquid storage tank 10 by gluing or screwing, etc., and the present application does not make specific restrictions on this.

[0047] The atomizing assembly 30 is disposed between the liquid storage tank 10 and the atomizing seat 20 . One end of the atomizing assembly 30 is fixed to the atomizing seat 20 , and the other end thereof is relatively fixed to the air guide tube 14 .

[0048] Specifically, the atomizer seat 20 is provided with an assembly hole 21 assembled with one end of the atomizer assembly 30; the atomizer 100 also includes an adapter sleeve 50 and a seal 52, the seal 52 is assembled in the adapter sleeve 50, and one end of the adapter sleeve 50 is sleeved on one end of the air guide tube 14, and the other end of the adapter sleeve 50 is sleeved on the other end of the atomizer assembly 30, the seal 52 is sealed between the air guide tube 14 and the adapter sleeve 50, and the seal 52 is also sealed between the atomizer assembly 30 and the adapter sleeve 50.

[0049] One end of the atomizer assembly 30 is assembled in the assembly hole 21 on the atomizer seat 20, and the other end thereof is connected to the air guide tube 14. The atomizer assembly 30 is provided with an air flow channel 320, which is connected to the air guide tube 14. The aerosol formed after atomization is discharged through the air flow channel 320 and the air guide tube 14.

[0050] The base 40 is sealed on the open end of the liquid storage tank 10. The base 40 can be connected to the atomizer seat 20 and / or the liquid storage tank 10, and an atomizer cavity 24 is formed between the base 40 and the atomizer seat 20. The end surface of the atomizer assembly 30 facing the base 40 is located in the atomizer cavity 24, and the airflow channel 320 is connected to the atomizer cavity 24. The atomizer assembly 30 atomizes the liquid matrix in the atomizer cavity 24 to form an aerosol.

[0051] The base 40 is also provided with an air inlet 42, which is connected to the atomizing chamber 24 and 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 oxygen required for atomization and carry the formed aerosol through the airflow channel 320 and the air guide tube 14 to the user's oral cavity.

[0052] In this application, see Figure 4 and Figure 5 , Figure 4 yes Figure 2 The schematic diagram of the structure of the atomizer assembly in the atomizer shown in FIG. Figure 5 yes Figure 4 A schematic structural diagram of the first end surface of the atomization assembly is shown.

[0053] The atomization assembly 30 includes a porous substrate 32 and a heating element 34. The porous substrate 32 has an atomization surface and an air flow channel 320 that penetrates the porous substrate 32. The inner side wall 327 of the air flow channel 320 is provided with a capillary groove 322, which extends to the atomization surface, wherein the capillary force of the honeycomb-shaped pores is greater than the capillary force of the capillary groove 322; the heating element 34 is arranged on the atomization surface.

[0054] That is, the capillary force of the capillary groove 322 is smaller than the capillary force of the honeycomb 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 pores. The pore size of the honeycomb pores is approximately in the range of 1 μm to 100 μm, while the size of the capillary groove 322 is approximately in the range of 0.3 mm to 3 mm. Therefore, under the same volume, the capillary groove 322 can absorb and accommodate more liquid than the honeycomb pores in the porous matrix 32. Therefore, by providing the capillary groove 322, the liquid storage capacity of the porous matrix 32 can be increased, so that when the liquid supply is insufficient, the liquid stored in the capillary groove 322 can replenish the liquid to the atomizing surface in time to prevent dry burning from occurring on the atomizing surface.

[0055] The porous matrix 32 may be a porous ceramic matrix or a porous glass matrix, etc., having 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, and has a large number of pore structures inside that are connected to each other and to the surface of the material, and form honeycomb-like pores, and then the liquid can be guided from one side to the other side through the honeycomb-like pores inside. The pore size of the pores in the porous matrix 32 may range from 1 μm to 100 μm.

[0056] The heating element 34 is arranged on the atomizing surface, wherein the heating element 34 can be arranged on the atomizing surface, or the heating element 34 can be buried under the atomizing surface and close to the atomizing surface, or the atomizing surface is provided with a sink groove, and the heating element 34 is arranged in the sink groove of the atomizing surface, both of which can make the liquid on the atomizing surface be atomized to generate aerosol.

[0057] In this embodiment, the porous matrix 32 is cylindrical and has a first end face 324 and a second end face 326 opposite to each other. The air flow channel 320 and the capillary groove 322 extend from the first end face 324 to the second end face 326, wherein the first end face 324 is an atomization surface.

[0058] Specifically, one end of the first end surface 324 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 of the second end surface 326 is connected to the adapter sleeve 50, and the second end surface 326 faces the air guide tube 14, and the air flow channel 320 is connected to the air guide tube 14.

[0059] 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 air flow channel 320. The outer wall surface 325 is a liquid absorption surface, and at least a portion of the outer wall surface 325 is exposed to the liquid storage cavity 12. The liquid matrix stored in the liquid storage cavity 12 is guided to the remaining surface of the porous matrix 32 via the outer wall surface 325, and then the liquid matrix in the liquid storage cavity 12 can be guided to the first end surface 324 and the capillary groove 322 via the outer wall surface 325.

[0060] Optionally, the second end surface 326 is a liquid absorbing surface, or the outer wall surface 325 and the second end surface 326 are both liquid absorbing surfaces.

[0061] Optionally, the porous matrix 32 may also be in a prism shape, and the side surface between the two end surfaces may be a liquid absorption surface, or one of the end surfaces may be a liquid absorption surface, which is not specifically limited in the present application.

[0062] 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 matrix stored in the capillary groove 322 can be supplied to the first end surface 324. For example, the inner side wall 327 can be provided with one, two, or three capillary grooves 322, wherein the plurality of capillary grooves 322 can be evenly spaced or unevenly spaced along the circumference of the air flow channel 320.

[0063] The other end of the capillary groove 322 may extend to the second end surface 326 of the porous matrix 32 , or the other end of the capillary groove 322 may not extend to the second end surface 326 of the porous matrix 32 .

[0064] The capillary groove 322 may extend in a straight line along the axial direction of the airflow channel 320, or the capillary groove 322 may extend in a spiral along the axial direction of the airflow channel 320, or the capillary groove 322 may extend in a bent direction along the axial direction of the airflow channel 320, and the present application does not impose any specific limitation on this.

[0065] In this embodiment, a plurality of capillary grooves 322 are evenly spaced apart along the circumference of the airflow channel 320, the capillary grooves 322 extend in a straight line along the axial direction of the airflow channel 320, and the other end of the capillary grooves 322 extends to the second end surface 326 of the porous matrix 32, so as to facilitate the manufacture of the capillary grooves 322 on the inner side wall 327 of the airflow channel 320, thereby simplifying the manufacturing process of the capillary grooves 322.

[0066] The capillary groove 322 defined in the present application refers to a capillary groove 322 having a capillary effect, and the liquid matrix introduced into the capillary groove 322 from the outer wall surface 325 can be adsorbed and stored in the capillary groove 322 due to the capillary effect.

[0067] The average pore size of the pore structure inside the porous matrix 32 itself is in the μm level, while the size of the capillary groove 322 is in the mm level. The size of the capillary groove 322 is at least one order of magnitude larger than the size of the pore structure of the porous matrix 32. Therefore, by arranging the capillary groove 322 on the porous matrix 32, the liquid storage capacity of the porous matrix 32 can be increased.

[0068] It can be understood that the capillary groove 322 is disposed on the inner side wall 327 of the air flow channel 320 , so the capillary groove 322 is connected to the air flow channel 320 , and the capillary action of the capillary groove 322 can prevent the liquid matrix stored in the capillary groove 322 from entering the air flow channel 320 .

[0069] Furthermore, the liquid storage chamber 12 is often in a state of slight negative pressure, which is also helpful in preventing the liquid matrix stored in the capillary groove 322 from entering the air flow channel 320 .

[0070] That is, in the present application, a capillary groove 322 is provided on the inner side wall 327 of the air flow channel 320. Even if the capillary groove 322 is connected to the air flow channel 320, the liquid matrix in the capillary groove 322 can be effectively prevented from entering the air flow channel 320, thereby preventing the user from directly inhaling the un-atomized liquid matrix into the oral cavity during the suction process.

[0071] The heating element 34 is disposed on the first end surface 324 of the porous substrate 32, so that the liquid matrix conducted to the first end surface 324 can be atomized to generate an aerosol. The heating element 34 is disposed around the air flow channel 320 and the capillary groove 322, so that the capillary groove 322 can guide the stored liquid matrix to the first end surface 324 to replenish the liquid matrix at the first end surface 324, thereby preventing the heating element 34 from drying out due to insufficient liquid supply of the liquid matrix on the first end surface 324.

[0072] In a specific application scenario, before the heating element 34 works, the first end surface 324 is full of liquid matrix, and the capillary groove 322 is also full of liquid matrix. After the heating element 34 starts to atomize, it will consume the liquid matrix 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, the heating element 34 will inevitably burn dry due to insufficient liquid supply and produce a burnt smell, thereby reducing the atomization efficiency and making the aerosol taste poor.

[0073] The liquid matrix stored in the capillary groove 322 can be additionally supplemented to the first end surface 324 to avoid insufficient liquid supply. After the liquid matrix stored in the portion of the capillary groove 322 closer to the first end surface 324 is supplemented to the first end surface 324, the liquid matrix stored in the portion of the capillary groove 322 farther from the first end surface 324 can be quickly supplemented to its closer portion due to capillary action, thereby maintaining the liquid supply of the capillary groove 322 to the first end surface 324, and the liquid matrix through the outer wall surface 325 is continuously supplemented into the capillary groove 322.

[0074] Therefore, the present application sets a capillary groove 322 on the inner side wall 327 of the air flow channel 320 to increase the liquid storage capacity of the porous matrix 32, and one end of the capillary groove 322 also extends to the first end surface 324, so that the liquid matrix stored in the capillary groove 322 can be quickly provided to the first end surface 324, and then replenish the liquid matrix required by the heating element 34, avoiding the occurrence of insufficient liquid supply.

[0075] 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 may be semicircular, elliptical, rectangular or pentagonal, etc., which is not specifically limited in the present application.

[0076] In this embodiment, Figure 6 As shown, Figure 6 yes Figure 5 The capillary groove 322 includes a first groove body 321 and a second groove body 323 connected to the first groove 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 spacing direction from the inner side wall 327 to the outer wall surface 325.

[0077] The maximum width a of the second slot body 323 along the circumference of the airflow channel 320 is smaller than the maximum width c of the first slot body 321 along the circumference of the airflow channel 320 .

[0078] The cross-section of the first groove body 321 along the axial direction of the airflow channel 320 can be semicircular, elliptical or irregular arc, etc., and the cross-section of the second groove body 323 along the axial direction of the airflow channel 320 can be rectangular, trapezoidal or wavy, etc., and the present application does not impose any specific restrictions on this.

[0079] In this embodiment, the cross-section of the first groove body 321 along the axial direction of the airflow channel 320 is semicircular, that is, the first groove body 321 is an arc-shaped groove, and the cross-section of the second groove body 323 along the axial direction of the airflow channel 320 is rectangular. The second groove body 323 is a rectangular groove, which makes the cross-section of the capillary groove 322 along the axial direction of the airflow channel 320 Ω-shaped, and thus the maximum width c of the first groove body 321 along the circumference of the airflow channel 320 is the diameter of the semicircle, and the width a of the second groove body 323 along the circumference of the airflow channel 320 is uniform, that is, the width a of the second groove body 323 along the circumference of the airflow channel 320 is smaller than the diameter c of the second groove body 323.

[0080] 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 that the capillary pump pressure is increased through the narrower second groove body 323, which is conducive to the liquid matrix in the capillary groove 322 being able to supply liquid along the second groove body 323 to the first end surface 324, and is also more conducive to locking liquid and preventing leakage.

[0081] That is, in this embodiment, the rectangular width of the second groove body 323 and the circular diameter of the first groove body 321 can both improve the capillary force of the capillary groove 322 , thereby facilitating the capillary groove 322 to lock liquid and prevent leakage.

[0082] Furthermore, the slot width of the second slot body 323 located in the airflow channel 320 is smaller than the hydraulic diameter of the airflow channel 320, wherein the slot width of the second slot body 323 is its width along the circumferential direction of the airflow channel 320, so as to greatly reduce the friction between the aerosol passing through the airflow channel 320 and the liquid matrix at the slot of the second slot body 323, so that the aerosol and the liquid matrix flow in opposite directions to each other.

[0083] Further, the width a of the second groove body 323 along the circumference 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 circumference of the airflow channel 320 is greater than or equal to 0.57 mm, and the maximum width a of the second groove body 323 along the circumference of the airflow channel 320 is less than or equal to 0.86 mm.

[0084] For example, if the cross section of the second groove body 323 is a trapezoid, then 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.

[0085] In this embodiment, the cross section of the second groove body 323 is rectangular, and the width thereof is uniform, and the width of the second groove body 323 may be 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm or 0.83 mm, etc.

[0086] The narrower the width of the second slot body 323, the greater the friction loss between the liquid matrix and the second slot body 323. If the width of the second slot body 323 is too wide, the capillary pumping pressure of the second slot body 323 will be insufficient. According to simulation analysis and a large number of experimental verifications, when the width of the second slot body 323 is in the range of 0.57 mm to 0.86 mm, the friction between it and the liquid matrix is ​​small, and its capillary pumping pressure is large, so that the liquid matrix can be quickly supplied to the first end surface 324 along the second slot body 323.

[0087] The depth b of the second groove body 323 along the radial direction of the air flow channel 320 is greater than or equal to 0.92 mm and less than or equal to 1.8 mm, and the depth b of the second groove body 323 can be 0.92 mm, 1.0 mm, 1.2 mm, 1.4 mm / 1.6 mm or 1.8 mm. 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.

[0088] The maximum width c of the first groove body 321 along the circumferential direction of the air flow channel 320 is greater than or equal to 0.69 mm and less than or equal to 1.03 mm.

[0089] In this embodiment, the cross section of the first groove body 321 is semicircular, and the diameter c of the first groove body 321 is greater than or equal to 0.69 mm and less than or equal to 1.03 mm. The diameter c of the first groove body 321 can be 0.69 mm, 0.72 mm, 0.8 mm, 0.9 mm, 1.0 mm or 1.03 mm. The diameter c of the first groove body 321 within this range can make it have a stronger capillary force and a higher liquid permeability for the liquid matrix, which is conducive to improving the ability of the capillary groove 322 to lock liquid and prevent leakage.

[0090] See also Figures 7 to 9 , Figure 7 yes Figure 4 The side view structural diagram of the atomization assembly shown in FIG. Figure 8 yes Figure 7 The cross-sectional structure diagram of the atomizer assembly along the AA viewing direction is shown. Fig. 9 yes Figure 4 A schematic structural diagram of the second end surface of the atomization assembly is shown.

[0091] 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 air flow channel 320 gradually increases from the first end surface 324 to the second end surface 326 .

[0092] By limiting the capillary groove 322 to have a first draft angle α, it is beneficial to better pull out the mold for manufacturing the capillary groove 322 during the processing of the porous matrix 32, and the cross-section of the capillary groove 322 along the axial direction gradually decreases from the second end face 326 to the first end face 324, which is beneficial to gradually increase the capillary force. On the one hand, it is beneficial for the liquid to flow along the capillary groove 322 to the atomization surface, and on the other hand, it is more beneficial for the capillary groove 322 to lock the liquid and prevent leakage.

[0093] The first draft angle α of the capillary groove 322 is in the range of 1 degree to 3 degrees. The first draft angle may be 1 degree, 1.5 degrees, 2 degrees, 2.5 degrees or 3 degrees.

[0094] 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 a strong capillary force, capillary pump pressure and liquid permeability.

[0095] Furthermore, the airflow channel 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 channel 320 at the first end surface 324 is smaller than the radial dimension of the airflow channel 320 at the second end surface 326 .

[0096] By limiting the airflow channel 320 to have a second draft angle β, it is beneficial to better pull out the mold for manufacturing the airflow channel 320 during the processing of the porous substrate 32, and the axial cross-section of the airflow channel 320 gradually increases from the first end face 324 to the second end face 326, which is beneficial for the aerosol to pass through the airflow channel 320. In the process of flowing from the first end face 324 to the second end face 326, the airflow pressure loss is gradually reduced, so as to facilitate the flow of the aerosol to the airway 14 and reduce the backflow of the aerosol.

[0097] The second draft angle β of the airflow channel 320 is in the range of 1 to 3 degrees, and the second draft angle may be 1, 1.5, 2, 2.5 or 3 degrees, etc. The value of the second draft angle is in the range of 1 to 3 degrees, which is conducive to the circulation of aerosol along the airflow channel 320 and reduces the backflow of aerosol.

[0098] The first draft angle α and the second draft angle β may be equal or different, and this application does not impose any specific limitation on this.

[0099] See again Figure 2 The heating element 34 is disposed on the first end surface 324 of the porous substrate 32 and is disposed around the air flow channel 320 and the capillary groove 322, wherein the heating element 34 can be a heating film or a heating resistor, etc., and the present application does not make any specific limitation on this.

[0100] Optionally, the heating element 34 may be in the shape of an open annular ring, which is disposed around the air flow channel 320 and the plurality of capillary grooves 322 to atomize the liquid matrix on the first end surface 324 .

[0101] In this embodiment, a plurality of capillary grooves 322 are distributed at intervals along the circumference of the air flow channel 320, and a tooth portion 328 is formed between adjacent capillary grooves 322. The heating element 34 is in the shape of a lotus ring, and the heating element 34 includes a plurality of surrounding portions 340 connected in sequence, and each surrounding portion 340 is arranged around a capillary groove 322, so that the heating area of ​​the heating element 34 can be relatively increased, thereby improving the atomization rate, that is, more atomization can be generated per unit time, which can relatively make the atomization component 30 more sensitive and more responsive.

[0102] Furthermore, the heating element 34 further includes a plurality of extension portions 342 , each of the extension portions 342 is connected to a connection end between two corresponding surrounding portions 340 , and the extension portion 342 is also disposed on the tooth portion 328 .

[0103] The connecting end between the two surrounding portions 340 is arranged corresponding to the tooth portion 328, and further extends to the surface of the tooth portion 328 on the first end surface 324 by arranging an extension portion 342, so as to more quickly atomize the liquid matrix provided by the capillary groove 322 and accelerate the atomization rate.

[0104] Furthermore, when the surrounding portion 340 and the extension portion 342 are in operation, a very obvious temperature gradient will be generated in the capillary groove 322, which will further increase the temperature difference of the generated aerosol, resulting in a more obvious difference in the taste of the aerosol. The user's taste buds will experience more distinct aerosol flavors and a better experience.

[0105] Optionally, the heating element 34 may also include a plurality of independent heating elements, which are arranged on the first end surface 324 around the airflow channel 320; or the heating element 34 may not be arranged around the airflow channel 320, which is not specifically limited in the present application.

[0106] Furthermore, if Figure 4 As shown, a retaining ring 329 is further provided on the outer wall of the porous substrate 32 , and the retaining ring 329 is stopped in the assembly hole 21 on the atomizer seat 20 , thereby limiting the position of the atomizer assembly 30 .

[0107] Different from the prior art, the present application discloses an electronic atomization device, an atomizer and an atomization assembly thereof. By setting a capillary groove on the inner side wall of the airflow channel to increase the liquid storage capacity of the porous matrix, and one end of the capillary groove also extends to the first end surface, so that the liquid matrix stored in the capillary groove can be quickly provided to the first end surface, and then replenish the liquid matrix required by the heating element, avoiding the occurrence of dry burning due to insufficient liquid supply.

[0108] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An atomizing assembly, characterized in that: The atomizing assembly comprises: A porous matrix having honeycomb-shaped pores; the porous matrix having an atomization surface and an air flow channel penetrating the porous matrix, the inner side wall of the air flow channel being provided with a capillary groove, the capillary groove extending to the atomization surface, and the capillary force of the honeycomb-shaped pores being greater than the capillary force of the capillary groove; the capillary groove extending in a straight line along the axial direction of the air flow channel, or the capillary groove extending in a spiral along the axial direction of the air flow channel, or the capillary groove extending in a bent axial direction of the air flow channel; The heating element is arranged on the atomizing surface.

2. The atomizer assembly according to claim 1, characterized in that: The porous matrix comprises a first end face and a second end face opposite to each other, the air flow channel and the capillary groove extend from the first end face to the second end face, wherein the first end face is the atomization face.

3. The atomizer assembly according to claim 2, characterized in that: The porous matrix further comprises an outer wall surface arranged between the first end surface and the second end surface, and the outer wall surface is a liquid absorption surface; and / or The second end surface is a liquid absorption surface.

4. The atomizer assembly according to claim 3, characterized in that: The porous matrix is ​​cylindrical.

5. The atomizer assembly according to claim 1, characterized in that: The cross section of the capillary groove along the axial direction of the air flow channel is polygonal or arc-shaped.

6. The atomizer assembly according to claim 1, characterized in that: The capillary groove includes a first groove body and a second groove body connected to the first groove in the depth direction, and the second groove body is arranged between the air flow channel and the first groove body; Wherein, the maximum width of the second slot body along the circumference of the airflow channel is smaller than the maximum width of the first slot body along the circumference of the airflow channel.

7. The atomizer assembly according to claim 6, characterized in that: The first groove body is an arc-shaped 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 air flow channel is Ω-shaped.

8. The atomizer assembly according to claim 6, characterized in that: A width of the second groove body along the circumferential direction of the air flow channel is greater than or equal to 0.57 mm and less than or equal to 0.86 mm.

9. The atomizer assembly according to claim 8, characterized in that: The maximum width of the first groove 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.

10. The atomizer assembly according to claim 8, characterized in that: A depth of the second groove body along the radial direction of the airflow channel is greater than or equal to 0.92 mm and less than or equal to 1.8 mm.

11. The atomizer assembly according to claim 6, characterized in that: The width of the slot of the second slot body located in the air flow channel is smaller than the hydraulic diameter of the air flow channel.

12. The atomizer assembly according to claim 2, characterized in that: The capillary groove has a first draft angle from the first end surface to the second end surface, and a cross section of the capillary groove along the axial direction of the airflow channel gradually increases from the first end surface to the second end surface.

13. The atomizer assembly according to claim 12, characterized in that: The first draft angle is in the range of 1 degree to 3 degrees.

14. The atomizer assembly according to claim 2 or 12, characterized in that: The airflow channel has a second draft angle from the first end surface to the second end surface, and a radial dimension of the airflow channel at the first end surface is smaller than a radial dimension of the airflow channel at the second end surface.

15. The atomizer assembly according to claim 14, characterized in that: The second draft angle is in the range of 1 degree to 3 degrees.

16. The atomizer assembly according to claim 1, characterized in that: The heating element is arranged around the air flow channel.

17. The atomizer assembly according to claim 16, characterized in that: The inner side wall of the air flow channel is provided with a plurality of the capillary grooves, and the heating element includes a plurality of surrounding parts connected in sequence, and each of the surrounding parts is provided corresponding to a capillary groove.

18. The atomizer assembly according to claim 17, characterized in that: A tooth portion is formed between adjacent capillary grooves, and the heating element further comprises a plurality of extension portions, each of which is connected to a connecting end between two corresponding surrounding portions, and the extension portion is also arranged on the tooth portion.

19. The atomizer assembly according to claim 1, characterized in that: The outer wall surface of the porous matrix is ​​also provided with a retaining ring.

20. A nebulizer comprising a liquid storage tank for storing an aerosol-generating substrate, characterized in that: The atomizer comprises the atomization assembly according to any one of claims 1 to 19; the porous matrix is ​​in fluid communication with the liquid storage tank, and the heating element is used to heat and atomize the aerosol-generating matrix of the porous matrix.

21. An electronic atomization device, characterized in that: The electronic atomization device comprises a power supply and the atomizer as claimed in claim 20, wherein the power supply is connected to the atomizer and supplies power to the atomizer.

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