LIQUID STORAGE COTTON, ELECTRONIC ATOMIZATION ASSEMBLY AND ELECTRONIC ATOMIZATION DEVICE

Description

CROSS REFERENCE TO RELATED APPLICATION

Pursuant to 35 U.S.C. § 119 and the Paris Convention Treaty, the present application claims the benefit of Chinese Patent Application No. 202421477751.8 filed on Jun. 26, 2024, Chinese Patent Application No. 202421477786.1 filed on Jun. 26, 2024, and Chinese Patent Application No. 202421594859.5 filed on Jul. 5, 2024, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present application relates to the field of atomization technology, and particularly provides a liquid storage cotton, an electronic atomization assembly, and an electronic atomization device.

BACKGROUND

The atomization assembly is a core component of the electronic atomization device, and the atomization assembly includes a liquid storage cotton and a heating assembly arranged in the liquid storage cotton. The liquid storage cotton mainly stores the atomization liquid, and the heating assembly guides the liquid and atomizes the atomization liquid by heating.

The existing liquid storage cotton is prepared by using an integrated molding technology, and the overall density is uniform. The atomization liquid in the upper portion of the liquid storage cotton is mainly transported in the atomization device by gravity, and the atomization liquid in the periphery of the liquid storage cotton is mainly transported by capillary force. However, no matter whether the transportation is achieved by the gravity or the capillary effect, the transportation of the atomization liquid is affected by the path length, and the utilization rate of the atomization liquid is not ideal.

SUMMARY

The present application provides a liquid storage cotton, an electronic atomization assembly, and an electronic atomization device; which aims to solve the problem of low utilization rate of atomization liquid in the liquid storage cotton of the existing atomization components.

In order to achieve the above object, the present application adopts the technical scheme of:

In a first aspect, the present application provides a liquid storage cotton, which includes a first liquid storage layer and a second liquid storage layer that are arranged in an axial direction; and a density of the first liquid storage layer being lower than that of the second liquid storage layer; a radial section of the second liquid storage layer is provided with a first unit and a second unit, and a density of the first unit is lower than that of the second unit; and a mounting hole is arranged in the first liquid storage layer and the second unit for being in communication with each other.

In some embodiments, the liquid storage cotton includes a first liquid storage layer and a second liquid storage layer that are arranged in an axial direction; the first liquid storage layer is the low-density layer, and the second liquid storage layer is the high-density layer.

In some embodiments, the first unit and the second unit are arranged on a radial section of the second liquid storage layer.

In some embodiments, a mounting hole is arranged on the second unit.

In some embodiments, the first unit wraps the second unit.

In some embodiments, the mounting hole is an eccentric mounting hole of the second liquid storage layer, a distance between a proximal hole end of the second liquid storage layer and the eccentric mounting hole is a first distance, a distance between a distal hole end of the second liquid storage layer and the eccentric mounting hole is a second distance, and a distance difference between the first distance and the second distance is within a preset length range; and the first unit and the second unit are arranged in parallel.

In some embodiments, the preset length range is an absolute value of the distance difference between the first distance and the second distance being greater than or equal to 3 mm.

In some embodiments, a plurality of first units are provided, and densities of the plurality of first units gradually increase along a direction close to the mounting hole; and/or,

a plurality of second units are provided, and densities of the plurality of second units gradually increase along a direction close to the mounting hole.

In some embodiments, a plurality of first liquid storage layers are provided, and densities of the plurality of first liquid storage layers gradually increase along a direction close to the second liquid storage layer.

In some embodiments, the mounting hole penetrates through the second unit and the first liquid storage layer, and the mounting hole is an eccentric mounting hole of the first liquid storage layer and the second liquid storage layer.

In some embodiments, the mounting hole penetrates through the second unit and the first liquid storage layer, and the mounting hole is a central mounting hole or an eccentric mounting hole of the first liquid storage layer and the second liquid storage layer.

In some embodiments, a density ratio of the high-density layer to the low-density layer is ranged from 1.38 to 3.20, a density ratio of the first unit to the low-density layer is ranged from 1.38 to 3.20, and a density ratio of the second unit to the low-density layer is ranged from 1.38 to 3.20.

In some embodiments, a density ratio of the high-density layer to the low-density layer is ranged from 1.38 to 3.20, and the high-density layer and the low-density layer are sequentially arranged from inside to outside.

In some embodiments, a density ratio of the high-density layer to the low-density layer is ranged from 1.38 to 3.20, and the low-density layer and the high-density layer are arranged in parallel.

In some embodiments, a density ratio of the high-density layer to the low-density layer is ranged from 1.38 to 3.20, and the high-density layer and the low-density layer are both made of a bicomponent fiber.

In some embodiments, the bicomponent fiber is one selected from a group of PP/PE, PET/PA, and PET/PE.

In some embodiments, a density ratio of the high-density layer to the low-density layer is ranged from 1.38 to 3.20, and a thickness ratio of the high-density layer to the low-density layer is ranged from 0.5 to 2.

1 In some embodiments, a density ratio of the high-density layer to the low-density layer is ranged from 1.38 to 3.20, and the high-density layer and the low-density layer are formed in one step.

In some embodiments, the liquid storage cotton is provided with at least two mounting holes configured for mounting an atomizing core, the first unit at least partially wraps the second unit, the second unit is arranged along a periphery of the at least two mounting holes, and the second unit at least partially wraps the at least two mounting holes.

In some embodiments, at least a part of the second unit is located between two adjacent mounting holes.

In some embodiments, the second unit is arranged penetrating through the first unit in a first direction.

In some embodiments, a height of the second unit is not less than an aperture of the mounting hole.

In some embodiments, a width of the second unit is not less than a distance between two adjacent mounting holes.

In some embodiments, a height of the second unit is not less than a maximum height of the first unit.

In some embodiments, a width of the second unit is not less than a distance between two adjacent mounting holes.

In some embodiments, two second units are provided, two mounting holes are provided, one mounting hole is arranged corresponding to one second unit, the mounting hole is located in the second unit, and the two second units are arranged at interval.

In some embodiments, a density of the first unit gradually decreases from a position close to the mounting hole to a position away from the mounting hole.

In some embodiments, the liquid storage cotton is provided with an incision extending from a periphery of the liquid storage cotton inwards and communicating with the mounting hole, and a number of the incisions corresponds to a number of the mounting holes.

In some embodiments, a cross section of the liquid storage cotton is one selected from a group of a spindle shape, a circle, an ellipse, a parallelogram, a rectangle, a square, a triangle, and a waist shape.

In some embodiments, a cross section of the second unit is at least one selected from a group of a square, a rectangle, a parallelogram, a rhombus, a pentagram, a triangle, various irregular drop shapes, and a shuttle shape.

In some embodiments, a density ratio of the second unit to the first unit is (1.1-4):1.

In some embodiments, a thickness ratio of the first unit to the second unit is 17:1-1:17.

In a second aspect, the present application provides an electronic atomization assembly, which includes the liquid storage cotton.

In a third aspect, the present application provides an electronic atomization device, which includes the electronic atomization assembly.

The liquid storage cotton has the beneficial effects that: through the density gradient arrangement of the high-density layer and the low-density layer, the liquid storage cotton as a whole forms a structure design of a Laplace pressure difference, the density of the low-density layer is smaller, the pores of the low-density layer are relatively larger, and therefore the capillary effect is weak, thus the liquid locking capability is poor. The density of the high-density layer is larger, the pores of the high-density layer are small and many, and therefore the capillary effect is stronger; when the atomization liquid sequentially passes through the low-density layer and the high-density layer, under the action of the enhanced capillary effect, the atomization liquid of the low-density layer shows a trend of continuously flowing to the high-density layer, the transportation capability and efficiency of the atomization liquid in the liquid storage cotton are optimized, the over-supply or insufficient supply of the atomization liquid is avoided, the absorption and transportation efficiency of the liquid storage cotton on the atomization liquid is balanced, and therefore the residual liquid rate of the liquid storage cotton is reduced, and the utilization rate of the atomization liquid of the liquid storage cotton is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to clearly illustrate the technical solutions in the embodiments of the present application, the following briefly describes the drawings that need to be used in the embodiments or in the description of the related art. Obviously, the drawings below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained from these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a liquid storage cotton according to an embodiment of the present application; the liquid storage cotton is provided with a first liquid storage layer and a second liquid storage layer that are arranged in an axial direction;

FIG. 2 is a schematic sectional view of a second liquid storage layer of the liquid storage cotton according to an embodiment of the present application; the mounting hole is a central mounting hole of the second liquid storage layer;

FIG. 3 is a schematic structural diagram of a second liquid storage layer of the liquid storage cotton according to an embodiment of the present application; the mounting hole is an eccentric mounting hole of the second liquid storage layer;

FIG. 4 is a schematic structural diagram of a first unit and a second unit arranged in parallel in the second liquid storage layer according to an embodiment of the present application;

FIG. 5 is a schematic diagram of liquid guiding between a first liquid storage layer and a first unit of a second liquid storage layer according to the embodiment of the present application;

FIG. 6 is a schematic diagram of liquid guiding between a first liquid storage layer and a second unit of a second liquid storage layer according to an embodiment of the present application;

FIG. 7 is a schematic diagram of liquid guiding of a first unit and a second unit in a second liquid storage layer according to an embodiment of the present application;

FIG. 8 is a schematic sectional view of a second liquid storage layer of a liquid storage cotton according to another embodiment of the present application; two mounting holes are provided;

FIG. 9 is a schematic sectional view of a second liquid storage layer of a liquid storage cotton according to another embodiment of the present application; two mounting holes are provided, and the liquid storage cotton is provided with an incision;

FIG. 10 is a schematic sectional view of a second liquid storage layer of a liquid storage cotton according to another embodiment of the present application; two mounting holes are provided, and the second unit penetrates through the first unit;

FIG. 11 is a schematic sectional view of a second liquid storage layer of a liquid storage cotton according to another embodiment of the present application; two mounting holes are provided, and the cross-sectional shapes of a second unit and a first unit are both oval;

FIG. 12 is a schematic sectional view of a second liquid storage layer of a liquid storage cotton according to another embodiment of the present application; a number of the second units corresponds to a number of the mounting holes;

FIG. 13 is a schematic sectional view of a second liquid storage layer of a liquid storage cotton according to another embodiment of the present application; a cross-sectional shape of the first units is circular, and a cross-sectional shape of the second units is oval;

FIG. 14 is a schematic sectional view of a second unit penetrating through a first unit of a liquid storage cotton according to another embodiment of the present application; and a cross-sectional shape of the first units is circular;

FIG. 15 is a schematic diagram of a sheath-core structure of the bicomponent fiber according to an embodiment of the present application;

FIG. 16 is a schematic diagram of an eccentric structure of the bicomponent fiber according to an embodiment of the present application;

FIG. 17 is another schematic diagram of an eccentric structure of the bicomponent fiber according to an embodiment of the present application;

FIG. 18 is a schematic view of a parallel structure of the bicomponent fiber according to an embodiment of the present application;

FIG. 19 is another schematic view of a diagram structure of the bicomponent fiber according to an embodiment of the present application;

FIG. 20 is a schematic view of a segmented-pie structure of the bicomponent fiber according to an embodiment of the present application; and

FIG. 21 is a schematic view of an island structure of the bicomponent fiber according to an embodiment of the present application.

In the drawings, the reference numerals are listed as following:

• • 1000—liquid storage cotton;
  • 1≤low-density layer; 2—high-density layer;
  • 100—first liquid storage layer;
  • 200—second liquid storage layer;
  • 201—first unit; 202—second unit; 3—mounting hole; 4—first fiber; 5—second fiber; and 300—incision.

DESCRIPTION OF THE EMBODIMENTS

Hereinafter, the embodiments of the present application are described in detail. Examples of the embodiments are shown in the drawings. The same or similar components are designated by the same or similar reference numerals regardless of the drawings, and a repeated description of which is omitted. The embodiments described below are merely exemplary, and are intended to explain the present application, and should not be understood to limit the present application thereto.

In the description of the present application, it needs to be understood that the terms “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

In addition, the terms “first” and “second” are used herein for purposes of description and are not intended to indicate or imply relative importance or a numerical limitation of “one” or “two,” unless specifically defined as such. Thus, the features defined with “first” and “second” can include one or more of the features, explicitly or implicitly. In the description of the present application, the meaning of “a plurality of” is two or more, unless specifically defined otherwise.

In the present application, unless otherwise specified or limited, the terms “mount”, “connect”, “connection”, “fix”, and the like should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or can be integrated; can be mechanical connection, can be electrical connection; can be direct connection, can be indirect connection through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

In the present application, the terms “one embodiment”, “some embodiments”, “an example”, “a specific example”, or “some examples” mean that the particular feature, structure, material, or characteristic following the phrase is included in at least one embodiment or example of the present application. In the present application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of different embodiments or examples described in the present application without contradiction.

As shown in FIG. 1 and FIG. 2, the present application provides a liquid storage cotton, which includes a low-density layer 1 and a high-density layer 2 connected with each other.

In the embodiment, the liquid storage cotton is provided with a density gradient distribution, and at least includes two parts with different densities, namely the low-density layer 1 and the high-density layer 2.

As shown in FIG. 5 to FIG. 7, in the structure of the embodiment, the low-density layer 1 has a relatively smaller density, and has a structural characteristic of less pores and a larger pore size, so that the flow resistance of the atomization liquid flowing through the low-density layer 1 is smaller, and the high-density layer 2 has more pores and a smaller pore size, so that the structure has a strong capillary effect and a relatively strong liquid locking capacity.

Based on the above structural design, when the atomization liquid sequentially passes through the low-density layer 1 and the high-density layer 2, under the action of the enhanced capillary effect, the atomization liquid in the low-density layer 1 has a trend of continuously flowing to the high-density layer 2, and meanwhile, the liquid storage cotton is provided with an atomizing core in the high-density layer 2 in applications, and the atomizing core is used for heating the atomization liquid, so that after the atomization liquid in the low-density layer 1 flows to the high-density layer 2, the atomization liquid can be effectively stored and transported to the atomizing core for atomization treatment; in addition, since the high-density layer 2 and the low-density layer 1 have a high-low-density difference, the density relationship can affect the diffusion and transmission speed of the atomization liquid between different density layers.

As shown in FIG. 2 to FIG. 4, and FIG. 8, in one embodiment, the liquid storage cotton includes a first unit 201 and a second unit 202, and the density of the first unit 201 is lower than that of the second unit 202.

Specifically, the first unit 201 and the second unit 202 form a density gradient distribution, the density of the first unit 201 is lower than that of the second unit 202, and the atomization liquid of the first unit 201 tends to continuously flow to the second unit 202.

It should be noted that, as shown in FIGS. 5-7, in one specific embodiment structure of the embodiment, the material density of the first unit 201 and the second unit 202 can have a gradient density along the radial section of the liquid storage cotton, so as to optimize the transverse transport capacity of the atomization liquid in the liquid storage cotton. In other embodiments of the present application, the material densities of the first unit 201 and the second unit 202 can also have a gradient density along the axial direction of the liquid storage cotton, so as to optimize the longitudinal transport capacity of the atomization liquid in the liquid storage cotton, which is not limited herein.

As shown in FIG. 1, in some embodiments, the liquid storage cotton includes an axially arranged first liquid storage layer 100 and a second liquid storage layer 200, the first liquid storage layer 100 is a low-density layer 1, and the second liquid storage layer 200 is a high-density layer 2.

In the embodiment, the first liquid storage layer 100 and the second liquid storage layer 200 are coaxially arranged, and at this time, the first liquid storage layer 100 is located at the upper part of the liquid storage cotton, and the second liquid storage layer 200 is located at the lower part of the liquid storage cotton. Under this design, the atomization liquid tends to flow from the first liquid storage layer 100 to the second liquid storage layer 200 below under the action of its own gravity, and at the same time, since the density of the second liquid storage layer 200 is greater than that of the first liquid storage layer 100, the second liquid storage layer 200 locks the atomization liquid based on the enhanced capillary effect and continuously supplies the atomization liquid to the atomizing core, so that the enhanced capillary effect and the gravity action complement each other, local liquid accumulation of the liquid storage cotton can be avoided, and the longitudinal transmission efficiency of the atomization liquid can be effectively improved.

As shown in FIGS. 1 to 4, in some embodiments, the first unit 201 and the second unit 202 are arranged on the radial section of the second liquid storage layer 200.

In the embodiment, the first liquid storage layer 100 and the second liquid storage layer 200 are axially arranged, and the radial section of the second liquid storage layer 200 is provided with at least two units with different densities, including the first unit 201 and the second unit 202. The density of the first unit 201 is less than that of the second unit 202; in this structural design, gradient transport exists between the first liquid storage layer 100 and the second liquid storage layer 200 and between the first unit 201 and the second unit 202, the transport efficiency of longitudinal permeation and transverse diffusion of the atomization liquid in the liquid storage cotton is optimized, and the utilization rate of the atomization liquid of the liquid storage cotton is improved.

It should be noted that, in one specific embodiment structure of the embodiment, as shown in FIG. 1, the liquid storage cotton forms the axially distributed first liquid storage layer 100 and the second liquid storage layer 200 as a whole, the first liquid storage layer 100 is a uniform low-density material with a density of ρ1;

The structure of the second liquid storage layer 200 in the embodiment can be referred to FIG. 2, the material density of the second liquid storage layer 200 has a gradient distribution in the radial cross-sectional direction, and in the embodiment, the radial cross-section of the second liquid storage layer 200 includes at least two regions with different material densities, including a first unit 201 with a material density of ρ2 and a second unit 202 with a material density of ρ3. The overall density distribution of the liquid storage cotton is set to ρ1<ρ2<ρ3.

In the embodiment, as shown in FIG. 5 and FIG. 6, due to the density difference, the first liquid storage layer 100, the first unit 201, and the second unit 202 form pores, porosity and surface energy of different sizes, and there is a different density combination between the density ρ1 of the first liquid storage layer 100 and the densities ρ2 and ρ3 of the second liquid storage layer 200, so as to form a plurality of density layered structures and generating a surface energy gradient and a Laplace pressure difference in each density layered structure, and the capillary effect in the conveying direction is then optimized, so that the atomization liquid of the first liquid storage layer 100 at the upper part is continuously transported to the second liquid storage layer 200 at the lower part under the dual action of gravity and the enhanced capillary effect, and the utilization rate of the atomization liquid of the first liquid storage layer 100 is increased.

Based on the embodiment, as shown in FIG. 7, the high and low densities in the second liquid storage layer 200 are uniformly distributed, and a Laplace pressure difference is also generated in the radial cross-sectional direction, so that the atomization liquid of the first unit 201 is continuously transported to the second unit 202 inside the liquid storage cotton.

In this embodiment, when the electronic atomization device is used, the atomization liquid is heated and atomized by the atomizing core arranged in the second unit 202 of the second liquid storage layer 200, and based on the density gradient between the first liquid storage layer 100 and the second liquid storage layer 200 and the density gradient inside the second liquid storage layer 200, the liquid storage cotton as a whole forms a structural design of a plurality of Laplace pressure differences, the longitudinal and transverse transport capacities of the atomization liquid in the liquid storage cotton are optimized, the atomization liquid is concentratedly transported to the atomizing core, so as to improve the utilization rate of the atomization liquid of the liquid storage cotton and increase the service life of the atomization device.

As shown in FIG. 2 to FIG. 4, in some embodiments, the second unit 202 is provided with a mounting hole 3.

Specifically, the mounting hole 3 is arranged on the second unit 202, and the mounting hole 3 is used for arranging the atomizing core.

For example, the mounting hole 3 can be arranged as a central mounting hole or an eccentric mounting hole of the second liquid storage layer 200, and the atomizing core is arranged on the side of the second unit 202 of the high-density layer 2 close to the mounting hole 3.

As shown in FIG. 1 and FIG. 2, in a more specific embodiment of the present embodiment, the mounting hole 3 penetrates through the second unit 202 and the first liquid storage layer 100, and the mounting hole 3 is a central mounting hole of the first liquid storage layer 100 and the second liquid storage layer 200.

As shown in FIG. 1 and FIG. 3, in another more specific embodiment of the present embodiment, the mounting hole 3 penetrates through the second unit 202 and the first liquid storage layer 100, and the mounting hole 3 is an eccentric mounting hole of the first liquid storage layer 100 and the second liquid storage layer 200.

As shown in FIG. 2 and FIG. 3, the first unit 201 wraps the second unit 202.

In the present embodiment, the structure in which the first unit 201 wraps the second unit 202 is formed in the second liquid storage layer 200, and the mounting hole 3 is arranged on the second unit 202; then, on the radial section of the second liquid storage layer 200, the second unit 202 and the first unit 201 are formed to be arranged around the mounting hole 3 in sequence, due to the density difference between the inner and outer peripheries in the second liquid storage layer 200, the atomization liquid of the first unit 201 flows to the second unit 202, and then flows into the mounting hole 3 to be atomized, which helps to improve the utilization rate of the atomization liquid of the liquid storage cotton.

It should be noted that when the structure in which the first unit 201 wraps the second unit 202 is formed in the second liquid storage layer 200, the mounting hole 3 can be arranged at multiple positions in the liquid storage cotton, for example, when the mounting hole 3 is arranged at the axial position of the second liquid storage layer 200, a central mounting hole is formed, and when the mounting hole 3 is not arranged at the axial position of the second liquid storage layer 200, an eccentric mounting hole is formed; in specific embodiment, the mounting hole 3 is a central mounting hole or an eccentric mounting hole, and on the radial section of the second liquid storage layer 200, the second unit 202 and the first unit 201 can be formed to be arranged around the mounting hole 3 in sequence, due to the density difference between the inner and outer peripheries in the second liquid storage layer 200, the atomization liquid of the first unit 201 continuously flows to the second unit 202, and then flows into the mounting hole 3 to be atomized by the heating element, the residual amount of the atomization liquid is reduced, and the utilization rate of the atomization liquid of the liquid storage cotton is improved as a whole.

Based on the structural arrangement in the embodiment, the first liquid storage layer 100 and the second liquid storage layer 200 are both provided with the mounting hole 3, the two mounting holes 3 are communicated to each other, and the mounting hole 3 of the second liquid storage layer 200 is used for being connected with the heating core.

As shown in FIG. 4, in some embodiments, the mounting hole 3 is an eccentric mounting hole of the second liquid storage layer 200.

The distance between the proximal hole end of the second liquid storage layer 200 and the eccentric mounting hole is a first distance, the distance between the distal hole end of the second liquid storage layer 200 and the eccentric mounting hole is a second distance, and the distance difference between the first distance and the second distance is within a preset length range.

The first unit 201 and the second unit 202 are arranged in parallel.

It should be noted that, in the embodiment, when the mounting hole 3 is an eccentric mounting hole, the distal hole end and the proximal hole end are formed on the radial section of the second liquid storage layer 200. The distal hole end can be understood as the position of the second liquid storage layer 200 farthest from the mounting hole 3 on the radial section, and the proximal hole end can be understood as the position of the second liquid storage layer 200 closest to the mounting hole 3 on the radial section. Further, the mounting hole 3 can be specifically arranged at the axial center position or the eccentric position of the second unit 202. On the radial section of the second liquid storage layer 200, the distance between the proximal hole end and the mounting hole 3 is the first distance A, and the distance between the distal hole end and the mounting hole 3 is the second distance B. Through the cooperation between the first distance A and the second distance B, the position of the mounting hole 3 on the second unit 202 is further set, and different transmission efficiency designs of the liquid storage cotton to the atomizing core for transmitting the atomization liquid can be adapted.

In specific embodiment, the cooperation between the first distance A and the second distance B can be various, for example, an absolute value of the distance difference (A−B) between the first distance A and the second distance B can be within a preset length range, or the ratio of the first distance A to the second distance B satisfies a preset distance ratio.

In a preferred embodiment of the structural design, the absolute value of the distance difference between the first distance A and the second distance B is greater than or equal to 3 mm. In this case, the first unit 201 and the second unit 202 are arranged in parallel, and the residual amount of the atomization liquid can be effectively reduced.

In a more specific embodiment of the embodiment, as shown in FIGS. 1 and 4, the first unit 201 and the second unit 202 are arranged in parallel, the mounting hole 3 penetrates through the second unit 202 and the first liquid storage layer 100, and the mounting hole 3 is an eccentric mounting hole of the first liquid storage layer 100 and the second liquid storage layer 200.

In a more specific embodiment, as shown in FIG. 1, the radial section of the first liquid storage layer 100 and the radial section of the second liquid storage layer 200 are both circular, the radial section shapes of the two are the same, and the two are combined closely. In this case, the liquid storage cotton can be in a cylindrical shape. Other shape structural designs, for example, an elliptical shape, can also be used. When designing, the radial sections at the connection positions of the first liquid storage layer 100 and the second liquid storage layer 200 can be closely connected, and which is not limited herein.

In a specific embodiment, when the radial sections of the first liquid storage layer 100 and the second liquid storage layer 200 are both circular. When the mounting hole 3 is a central hole, it can be understood as the mounting hole at the position of the circular center. When mounting hole 3 is an eccentric hole, it is the mounting hole at a certain distance away from the circular center

In a specific embodiment, although the radial section of the second liquid storage layer 200 is circular or elliptical, the radial section of the first unit 201 or the second unit 202 can be adjusted according to the limitation of a specific process. For example, when the radial section of the second liquid storage layer 200 is elliptical, the radial section of the second unit 202 can adopt a circular, an equilateral triangular, or a square structure, and the first unit 201 surrounds the second unit 202 to form an ellipse, so that the first unit 201 and the second unit 202 are in a wrapping structure. For example, when the radial section of the second liquid storage layer 200 is circular, the radial sections of the first unit 201 and the second unit 202 are semicircular structures matching with each other, so that the first unit 201 and the second unit 202 are arranged in parallel.

In a specific embodiment, the first liquid storage layer 100 has multiple first liquid storage layers 100, and the densities of the multiple first liquid storage layers 100 gradually increase in a direction close to the second liquid storage layer 200.

In a specific embodiment, as shown in FIG. 1, the liquid storage cotton can include more than two liquid storage layers, for example, three, four, five, or more liquid storage layers are arranged in an axial direction. In a specific embodiment, the first liquid storage layer 100 can be arranged in multiple layers, and the densities of the multiple first liquid storage layers 100 gradually increase in a direction close to the second liquid storage layer 200. For example, the densities of the multiple first liquid storage layers 100 are ρ1, ρ4, and ρ5 in sequence, and the overall density distribution in the liquid storage cotton is ρ1<ρp4<ρ5<ρ2<ρ3. The multiple density differences between the axially adjacent liquid storage layers enable the atomization liquid in the low-density part of the liquid storage cotton to be smoothly transported to the high-density part.

In another specific embodiment, a plurality of first units 201 are provided, and the densities of the plurality of first units 201 gradually increase in the direction close to the mounting hole 3; and/or a plurality of second units 202 are provided, and the densities of the plurality of second units 202 gradually increase in the direction close to the mounting hole.

In the embodiment, the second liquid storage layer 200 can further have two or more density regions in the radial direction on the radial section, for example, three, four or more regions with different material densities are provided. In a specific embodiment, a plurality of first units 201 can be provided, and/or a plurality of second units 202 can be provided, and the densities of the plurality of first units 201 and/or the densities of the plurality of second units 202 gradually increase in the direction close to the mounting hole 3. It can be understood that when the plurality of second units 202 are provided, the mounting hole 3 is arranged at the second unit 202 with the maximum density. The multiple density differences between the adjacent density regions in the radial section direction enable the second liquid storage layer 200 to have good liquid guiding capability, so as to conductive to ensure the supply of the atomization liquid.

It should be noted that in some embodiments, the number, cross-sectional shape and connection relationship of the first unit 201 and the second unit 202 of the second liquid storage layer 200 of the liquid storage cotton in the above embodiments can be set according to the present application requirements of the liquid storage cotton, as long as the first liquid storage layer 100 and the second liquid storage layer 200, and the first unit 201 and the second unit 202 in the second liquid storage layer 200 meet the transportation from the low-density part to the high-density part, so that the atomization liquid is transported longitudinally and transversely in the liquid storage cotton to be concentratedly transported to the atomizing core for heating and atomization, which is not limited herein.

In some embodiments, the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20, the density ratio of the first unit 201 to the low-density layer 1 is ranged from 1.38 to 3.20, and the density ratio of the second unit 202 to the low-density layer 1 is ranged from 1.38 to 3.20.

In the embodiment, the density of the first unit 201 is less than the density of the second unit 202; the density difference between the high-density layer 2 and the low-density layer 1, the first unit 201 and the low-density layer 1, and the second unit 202 and the low-density layer 1 satisfies the density ratio of 1.38-3.20; and any two of the high-density layer 2 and the low-density layer 1, the first unit 201 and the low-density layer 1, and the second unit 202 and the low-density layer 1 presents a suitable density gradient, so that the consumption rate of the atomizing core can be better matched, the supply of the atomization liquid can be prevented from being excessive or insufficient, the absorption and transport efficiency of the liquid storage cotton on the atomization liquid is balanced, the residual liquid rate of the liquid storage cotton is reduced, and the service life of the electronic atomization device is increased.

In some other embodiments of the present application, the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20, and the high-density layer 2 and the low-density layer 1 are sequentially arranged from inside to outside.

In the embodiment, the high-density layer 2 is located inside, and the low-density layer 1 is wrapped outside the high-density layer 2 to form a double-layer structure from inside to outside in the liquid storage cotton; meanwhile, at least a mounting hole 3 is formed in the high-density layer 2 when the liquid storage cotton is applied, and an atomizing core is arranged in the mounting hole 3, so that when the atomization liquid in the low-density layer 1 flows to the high-density layer 2, the atomization liquid can be effectively stored and transported to the atomizing core for atomization treatment. At this time, the mounting hole 3 can be arranged at the axial center of the liquid storage cotton to form a central mounting hole, or can be arranged at an eccentric position of the liquid storage cotton to form an eccentric mounting hole, as long as the mounting hole 3 is arranged on the high-density layer 2, so that the atomization liquid at the periphery of the liquid storage cotton can continuously flow to the high-density layer 2 and flow to the atomizing core for atomization, so as to improve the utilization rate of the atomization liquid at the periphery of the liquid storage cotton.

In some embodiments of the present application, the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20, and the low-density layer 1 and the high-density layer 2 are arranged in parallel.

In the embodiment, the low-density layer 1 and the high-density layer 2 in the liquid storage cotton are arranged adjacent to each other in the horizontal direction, and in this design, the mounting hole 3 is located in the region of the high-density layer 2, and the mounting hole 3 can be arranged at the axial center of the liquid storage cotton to form a central mounting hole, or can be arranged at an eccentric position of the liquid storage cotton to form an eccentric mounting hole, so that the liquid storage cotton can be adapted to the transmission efficiency design of stably transmitting the atomization liquid to the atomizing core through the arrangement of the low-density layer 1 and the high-density layer 2 in parallel and the density ratio design of the high-density layer 2 to the low-density layer 1.

In some embodiments, the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20, and the high-density layer 2 and the low-density layer 1 are both selected from a bicomponent fiber.

In a specific embodiment, when the first unit 201 and the second unit 202 are arranged on the radial section of the high-density layer 2, the first unit 201 and the second unit 202 are both prepared from a bicomponent fiber.

The bicomponent fiber can be formed by blending or compounding two fibers with different properties, for example, two filament fibers, specifically, any one of PP/PE (polypropylene/polyethylene), PET/PA (polyethylene terephthalate/polyamide), and PET/PE (polyethylene terephthalate/polyethylene).

In a specific embodiment, the bicomponent fiber can have any one of the structure forms shown in FIG. 15 (a sheath-core structure), FIG. 16 and FIG. 17 (an eccentric structure), FIG. 18 and FIG. 19 (a coordinate structure), FIG. 20 (a segmented structure), and FIG. 21 (an island-in-sea structure). For example, the bicomponent fiber can be PP/PE, and the melting point of PP is higher than that of PE, so that the bicomponent fiber can be formed by using PE as the first fiber of the sheath layer and PP as the second fiber of the core layer, so that the liquid storage cotton can adapt to high temperature of atomization heating and stably transmit the atomization liquid.

In another specific embodiment, the high-density layer 2 and the low-density layer 1 can be selected from a same bicomponent fiber or from different bicomponent fibers; when the high-density layer 2 and the low-density layer 1 are selected from different bicomponent fibers, the first unit 201 and the second unit 202 of the high-density layer 2 can be selected from a same bicomponent fiber or from different bicomponent fibers; as long as the density gradient is met between the high-density layer 2 and the low-density layer 1, as well as the first unit 201 and the second unit 202, which is not limited here in the embodiment.

In a more specific embodiment, the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20, and the high-density layer 2 and the low-density layer 1 are formed in one-step, specifically, the one-step formation can be simultaneous formation of the high-density layer 2 and the low-density layer 1, which is high in production efficiency and helps improve the uniformity and stability of the quality of the liquid storage cotton.

In a more specific embodiment, the high-density layer 2 and the low-density layer 1 can also be stepwise formed, taking the high-density layer 2 and the low-density layer 1 arranged from inside to outside as an example, the high-density layer 2 of the inner layer can be prepared first, and then the high-density layer 2 is superimposed on the basis of the inner layer, so that the structural performance design of each layer can be more accurately controlled.

Based on the above embodiment, liquid storage cotton samples 1-4 with different density ratios are prepared, and corresponding atomization liquid utilization rate tests are provided, including the following steps:

The liquid storage cotton with different density ratios is prepared by taking PET/PA as raw materials. The thickness ratio of the high-density layer 2 in the inside to the low-density layer 1 in the periphery is 1:1. Ten machines are respectively tested for the liquid storage cotton under each density, the maximum value and the minimum value are removed, the test results of the remaining eight machines are used for average value calculation, and the atomization liquid utilization rate of each sample is obtained. The viscosity of the atomization liquid used for the test is 119.7 mPa×s, the test method is suctioning for 2 seconds and 8 seconds at intervals, the suction flow rate is 17.5 mLs, and the suction capacity is 35 mL. The test results are shown in Table 1:

TABLE 1
Machine life test results of liquid storage cotton with different density ratios

			mass of liquid	mass of liquid	Utilization rate of
sample	density	injection	storage cotton	storage cotton	atomized
No.	ratio	mass/g	after testing/g	before testing/g	liquid/%

1	1.38	13.46	1.26	0.22	92.27
2	1.43	13.46	1.13	0.22	93.24
3	2.50	13.46	1.21	0.22	92.64
4	3.20	13.46	1.34	0.22	91.68

As shown in Table 1, when the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20, the utilization rate of the atomization liquid is more than 90%, and the results show that the density design can effectively improve the utilization rate of the atomization liquid.

In a more specific embodiment, the thickness ratio of the high-density layer 2 to the low-density layer 1 is ranged from 0.5 to 2.

It should be noted that when the thickness ratio of the high-density layer 2 to the low-density layer 1 is set, it means that the widths of the high-density layer 2 and the low-density layer 1 can be measured under the same conditions as the thickness for comparison in terms of the shape cooperation along the thickness direction of the liquid storage cotton, for example, both of them adopt the same regular shape, and exemplarily, the radial section of the high-density layer 2 is circular, and the low-density layer 1 wraps the high-density layer 2 to form the liquid storage cotton with a circular radial section. The thickness design in the liquid storage cotton can affect the transmission effect of the atomization liquid in the low-density layer 1 and the high-density layer 2, for example, when the thickness is thick, the transmission path of the atomization liquid is long, so as to affect the flow efficiency of the atomization liquid, and the like.

Based on the above embodiment, the liquid storage cotton samples 5 to 8 with the high-density layer 2 arranged inside and the low-density layer 1 arranged outside in different thickness ratios are prepared, and the corresponding atomization liquid utilization rate tests are performed, including the following steps:

The liquid storage cotton samples 5 to 8 are prepared by using the same raw materials and density ratio as the sample 2 and based on different thickness ratios, under the same settings of the injection mass and the mass of the liquid storage cotton before the test, each liquid storage cotton sample in each thickness ratio is tested on 10 machines, the maximum value and the minimum value are removed, the average value is calculated by using the test results of the remaining 8 machines, and the atomization liquid utilization rate of each sample is obtained. The viscosity of the atomization liquid used for the test is 119.7 mPa×s, the test method is suctioning for 2 seconds and 8 seconds at intervals, the suction flow rate is 17.5 mLs, and the suction capacity is 35 mL. The test results are shown in Table 2.

TABLE 2
Test results of the machine life of the liquid
storage cotton in different thickness ratios

			mass of liquid	mass of liquid	Utilization rate of
sample	thickness	injection	storage cotton	storage cotton	atomized
No.	ratio	mass/g	after testing/g	before testing/g	liquid/%

1	0.50	13.46	1.27	0.22	92.20
2	1.00	13.46	1.31	0.22	91.90
3	1.50	13.46	1.25	0.22	92.35
4	2.00	13.46	1.35	0.22	91.60

As shown in Table 2, when the density ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1.38 to 3.20 and the thickness ratio is ranged from 0.5-2, the utilization rate of the atomization liquid of the liquid storage cotton is more than 90%, which indicates that the design can effectively reduce the residual amount of the atomization liquid in the liquid storage cotton.

In a more specific embodiment, the volume ratio of the high-density layer 2 to the low-density layer 1 is ranged from 1:15 to15:1. It can be understood that the transmission effect of the atomization liquid in the low-density layer 1 and the high-density layer 2 can be affected by the volume design in the liquid storage cotton, so as to conductive to the atomization liquid to realize the liquid absorption and storage stability in the liquid storage cotton and ensure the continuous and reliable atomization process. Exemplarily, when at least one density layer of the high-density layer 2 and the low-density layer 1 adopts an irregular shape, compared with the thickness ratio, the high-density layer 2 and the low-density layer 1 can tend to select the volume ratio to adjust the transmission effect of the atomization liquid.

In some other specific embodiments of the present application, as shown in FIGS. 8 to 14, the liquid storage cotton is provided with at least two mounting holes 3 for mounting the atomizing core, the first unit 201 wraps at least a part of the second unit 202, the second unit 202 is arranged along the periphery of the mounting hole 3, and the second unit 202 at least partially wraps the at least two mounting holes 3.

Specifically, in the present embodiment, at least two mounting holes 3 are arranged in the liquid storage cotton to realize double-channel horizontal and vertical oil supply, and the at least two mounting holes 3 can greatly reduce the horizontal delivery path of the atomization liquid, so that the atomization liquid in the liquid storage cotton can be quickly delivered to the atomizing core in the mounting hole 3, so as to improve the utilization rate of the atomization liquid.

As shown in FIG. 7, and the density of the first unit 201 is lower than that of the second unit 202, since the density of the first unit 201 at the periphery is smaller, the porosity of the first unit 201 is relatively larger, and the capillary effect is weak, and the liquid locking capacity is poor; while the density of the second unit 202 is larger, the porosity is smaller and multiple, and therefore the capillary effect is stronger. When the electronic atomizer works, as the atomization liquid in the liquid storage cotton is continuously consumed, since the capillary effect of the connecting portion (the second unit 202) of the two mounting holes 3 is stronger than that of the first unit 201 at the periphery, and the liquid locking capacity of the first unit 201 is relatively weak, the atomization liquid of the first unit 201 continuously flows to the atomizing core in the two mounting holes 3, the oil supply pressure of the second unit 202 is relieved, the occurrence of the core burning phenomenon due to insufficient liquid supply is prevented, and meanwhile the utilization rate of the atomization liquid at the periphery (the first unit 201) of the liquid storage cotton is improved.

It should be noted that the first unit 201 wraps at least a part of the second unit 202, which means that the first unit 201 completely wraps the second unit 202 (as shown in FIGS. 8 and 9), or the first unit 201 partially wraps the second unit 202 (as shown in FIG. 10).

The second unit 202 is arranged along the periphery of the mounting holes 3, and the second unit 202 at least partially wraps the two mounting holes 3, which also means that the second unit 202 completely wraps the mounting holes 3 (that is, the two mounting holes 3 are located in the second unit 202, referring to FIG. 11), or the second unit 202 partially wraps the mounting holes 3 (that is, the mounting holes 3 are located at the connection position of the first unit 201 and the second unit 202, as shown in FIGS. 8 and 9).

In applications, the preparation method of the liquid storage cotton can be one-step forming (the first unit 201 and the second unit 202 are integrally formed) or stepwise forming (that is, the second unit 202 is prepared first, and then the peripheral fiber layer is superimposed to form the first unit 201). The fiber used for the liquid storage cotton is a filament, which can be single-component or bicomponent. As shown in FIGS. 15 to 21, the bicomponent fiber can be a sheath-core structure, an eccentric structure, a coordinate structure, a segmented structure, or an island-in-sea structure. The first unit 201 and the second unit 202 of the liquid storage cotton can be of a same material or different materials, and the materials include but are not limited to one or more of PA (polyamide), PET (polyester), PP (polypropylene), PE (polyethylene), PP/PE, PET/PA, and PET/PE.

In some embodiments of the present application, the density ratio of the second unit 202 to the first unit 201 is (1.1-4):1. In specific embodiments, the density ratio of the second unit 202 to the first unit 201 can be 1.1:1, 1.5:1, 1.8:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, or any ratio within the range of (1.1-4):1. Within this density ratio range, it can be ensured that the liquid locking capacity of the first unit 201 located at the periphery is weaker than that of the second unit 202 located at the inner portion, and the second unit 202 is located in the middle of the two mounting holes 100 (atomizing core), so that the oil supply capacity requirement for the second unit 202 is higher. Therefore, on this basis, the aerosol substrate in the first unit 201 will be continuously transported towards the second unit 202, the core burning phenomenon due to insufficient liquid supply is prevented, and the utilization rate of the aerosol substrate of the first unit 201 is improved.

As shown in FIGS. 8-14, in some embodiments of the present application, the height ratio of the first unit 201 to the second unit 202 is 17:1-1:17. In specific embodiments, the height ratio of the first unit 201 to the second unit 202 can be 17:1, 16:2, 15:3, 10:7, 7:10, 1:1, etc. within the range of 17:1-1:17. Within the above ratio range, the liquid storage capacity and liquid locking capacity of the first unit 201 and the second unit 202 can be ensured, and the atomization liquid in the first unit 201 can be continuously transported to the second unit 202, so as to improve the utilization rate of the atomization liquid in the first unit 201.

In some embodiments of the present application, as shown in FIGS. 8-14, at least a part of the second unit 202 is located between two adjacent mounting holes 3. In some preferred embodiments, as shown in FIGS. 11 and 12, a part of the second unit 202 is located between two adjacent mounting holes 3. In other preferred embodiments, as shown in FIGS. 8-10, the entire second unit 202 is located between two adjacent mounting holes 3. In some embodiments, the height of the second unit 202 is not less than the aperture of the mounting hole 3. In some embodiments, the width of the second unit 202 is not less than the distance between two adjacent mounting holes 3. Such arrangement is to improve the liquid storage capacity and liquid supply capacity of the second unit 202. Since the second unit 202 is located between two mounting holes 3, the atomization liquid therein is consumed faster, so the liquid storage capacity and the atomization liquid transport capacity to the atomizing core in the mounting hole 3 of the second unit 202 need to be improved.

In some embodiments of the present application, as shown in FIGS. 8 and 9, the second unit 202 is completely wrapped by the first unit 201, the connecting portion between two mounting holes 3 forms the second unit 202, the height of the second unit 202 is not less than the aperture of the mounting hole 3, and the width of the second unit 202 is equal to the distance between two mounting holes 3. That is, the second unit 202 is located in the inner portion, and the first unit 201 is located in the periphery.

It should be noted that the height of the second unit 202 refers to the distance of the second unit 202 in Y direction (i.e., the first direction) of the radial section in FIGS. 8-10, and the width of the second unit 202 refers to the distance of the second unit 202 in the X direction in the figure. Similarly, the height of the first unit 201 refers to the distance in the first direction, and the width of the first unit 201 refers to the distance in the X direction. The above is only for convenient understanding of the scheme, and should not be construed as a limitation on the embodiments of the present application. The mounting hole 3 is usually arranged to be circular, so the aperture is the diameter. In other embodiments, the mounting hole 3 can also be a square hole, an elongated hole, or other irregular holes, and the aperture of the mounting hole 3 is the vertical distance of the mounting hole 3 in the Y direction.

In some embodiments of the present application, as shown in FIG. 10 and FIG. 14, the

second unit 202 is arranged penetrating through the first unit 201 in the first direction. In this way, the liquid storage capacity of the second unit 202 can be maximized, thereby ensuring the liquid supply to the atomizing core in the mounting hole 3. In some embodiments, as shown in FIG. 10, the height of the second unit 202 is not less than the maximum height of the first unit 201. In some embodiments, the width of the second unit 202 is not less than the distance between two adjacent mounting holes 3.

In some embodiments of the present application, as shown in FIG. 10, two first units 201 are arranged, the two first units 201 are connected with the second unit 202 respectively, and the second unit 202 is located in the middle of the two first units 201. The two mounting holes 3 are located at the connection positions of the first units 201 and the second unit 202. The height of the second unit 202 is not less than the maximum height of the first unit 201. The width of the second unit 202 is equal to the distance between the two mounting holes 3. In this embodiment, the second unit 202 has a large volume, and can store more atomization liquid, thereby ensuring the liquid supply to the atomizing core in the mounting hole 3.

In some embodiments of the present application, as shown in FIG. 11, the cross-sectional shape of the first unit 201 is similar or identical to the cross-sectional shape of the second unit 202, and the cross-sectional shape of the second unit 202 is similar or identical to the cross-sectional shape of the liquid storage cotton. In the embodiments of the present application, the liquid storage cotton is taken as an example and is described as being in an oval shape. The first unit 201 and the second unit 202 are both designed in an oval shape, which is convenient for production and is more suitable for the current electronic atomizer. Further, as shown in FIG. 11, the second unit 202 is completely wrapped by the first unit 201, and the two mounting holes 3 are located in the second unit 202. In this way, the liquid supply from the second unit 202 to the atomizing core in the mounting hole 3 is further ensured, and the situation of burning core is effectively avoided.

In some embodiments of the present application, as shown in FIG. 12, two second units 202 are provided, one mounting hole 3 corresponds to one second unit 202, the mounting hole 3 is located in the second unit 202, and the two second units 202 are arranged at intervals. In this way, the atomizing core in each mounting hole 3 can be supplied with oil, and the efficiency is improved. In some embodiments, the two units can also be connected.

In some embodiments of the present application, the density of the first unit 201 gradually decreases from the position close to the mounting hole 3 to the position away from the mounting hole 3. In this way, the liquid locking capacity of the position away from the mounting hole 3 is poor, so that the atomization liquid is transported to the position close to the mounting hole 3 (i.e., the position of the atomizing core) under the action of the capillary effect, thereby improving the utilization rate of the atomization liquid of the first unit 201.

In some embodiments of the present application, as shown in FIGS. 9 to 14, the liquid storage cotton is provided with an incision 300 extending inward from the periphery of the liquid storage cotton and communicating with the mounting hole 3. The number of the incisions 300 corresponds to the number of the mounting holes 3. The incision 300 is provided for facilitating the mounting of the atomizing core. The incision 300 cuts the first unit 201 and/or the second unit 202 and communicates with the mounting hole 3. In this way, when the atomizing core is mounted, the incision 300 can be opened to facilitate the mounting of the atomizing core. In some embodiments, the incisions 300 are symmetrically arranged, so that the appearance of the liquid storage cotton can be ensured.

In some embodiments of the present application, the cross section of the liquid storage cotton is one selected from a group of a spindle shape, a circular shape, an elliptical shape, a parallelogram shape, a rectangular shape, a square shape, a triangular shape, and a waist shape. The embodiments of the present application provide examples of the elliptical shape and the circular shape, and in other embodiments, the liquid storage cotton can also be in a spindle shape, a square shape, a rectangular shape, etc.

In some embodiments of the present application, the cross section of the second unit 202 is at least one of a square shape, a rectangular shape, a parallelogram shape, a rhombus shape, a pentagram shape, a triangular shape, and various irregular drop shapes and a shuttle shape.

The present application also discloses an electronic atomization assembly including the liquid storage cotton, and the high-density layer 2 of the liquid storage cotton is provided with a mounting hole 3.

Specifically, the electronic atomization assembly includes an atomizing core (not shown) arranged on one side of the high-density layer close to the mounting hole, and the atomizing core is used for atomizing the atomization liquid in the liquid storage cotton.

The present application also discloses an electronic atomization device including the electronic atomization assembly.

Specifically, the electronic atomization device comprises a battery (not shown in the figure) and a circuit board (not shown in the figure), and the battery is connected with the atomizing core through the circuit board.

The above are only the preferred embodiments of the present application, and are not used to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.