Atomizer and aerosol-generating device

Abstract

The utility model provides an aerosol generating device and an atomizer, and the atomizer comprises a housing which defines a liquid storage cavity; the atomization assembly is arranged in the shell and comprises a liquid guide base body and a heating body, the liquid guide base body is provided with an atomization face and a liquid suction face which are oppositely arranged, the liquid suction face is arranged towards the liquid storage cavity, and the heating body is arranged on the atomization face; the air inlet piece is arranged in the shell and provided with an air inlet face, the air inlet face and the atomization face are oppositely arranged, at least two air inlet holes are formed in the air inlet face, and the projection of the air inlet holes on the axis of the atomizer and the projection of the center of the atomization assembly on the axis of the atomizer do not overlap; and the direction of the inlet air flow and the direction of the atomized steam form certain deviation or deflection, so that the mixing uniformity when the air and the atomized steam converge is reduced, and the purpose of increasing the particle size of the aerosol is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and particularly relates to an aerosol generating device and an atomizer. Background Art

[0002] Based on the principle of heating and atomization, an aerosol generating device atomizes a liquid matrix into aerosols with a size of about several hundred nanometers to several micrometers for users to inhale, and the particle size of the aerosols generally presents a normal distribution. Aerosol particles of different sizes will deposit at different positions in the human respiratory tract. For example, due to their large inertia, large particles are likely to deposit in the oral cavity, larynx, and upper respiratory tract, bringing sensations such as sweetness and coolness, and throat hit, while small particles have good fluidity and are not easily deposited in the upper respiratory tract. Instead, they are more likely to enter deep into the lungs and reach various parts of the human body through blood circulation. Therefore, the aerosol particle size has a very important impact on the inhalation experience of e-cigarette users. Utility Model Content

[0003] To solve the problem of how to improve the size of the aerosol particles generated by an aerosol generating device so as to provide users with the desired inhalation experience.

[0004] At least one embodiment of the present application provides an atomizer, including: a housing defining a liquid storage cavity for storing a liquid matrix; an atomization assembly disposed in the housing, the atomization assembly including a liquid guiding base body and a heating element, the liquid guiding base body having a liquid absorption surface and an atomization surface for receiving the liquid matrix, the heating element being disposed on the atomization surface; an air inlet member disposed in the housing, the air inlet member having an air inlet surface, the air inlet surface and the atomization surface being disposed opposite to each other, and a plurality of air inlet holes facing the atomization surface being provided on the air inlet surface, and the projections of the plurality of air inlet holes on the atomization surface all avoid or deviate from the geometric center of the atomization surface.

[0005] In an embodiment of the present application, a plurality of the air inlet holes are circumferentially spaced apart around the center of the air inlet surface.

[0006] In an embodiment of the present application, a plurality of the air inlet holes are equidistantly distributed circumferentially around the center of the air inlet surface, and the center of the air inlet surface and the geometric center of the atomization surface substantially coincide.

[0007] In an embodiment of the present application, the center of the air inlet surface and the geometric center of the atomization surface substantially coincide, and at least two of the air inlet holes are symmetrically arranged with respect to the center of the air inlet surface.

[0008] In an embodiment of the present application, the connecting lines of the centers of the plurality of air inlet holes on the air inlet surface form a rectangle, a square, or a regular hexagon.

[0009] An embodiment of the present application provides an atomizer. The projections of multiple intake holes on the atomization surface all avoid the center of the heating element, or the heating element avoids the geometric center of the atomization surface.

[0010] An embodiment of the present application provides an atomizer, including a first bracket. The atomization assembly includes an abutting portion and an atomization portion. The abutting portion abuts against the first bracket, the atomization portion is disposed opposite to the abutting portion, a liquid flow channel is defined between the abutting portion and the atomization portion, and the liquid flow channel is in liquid communication with the liquid storage cavity.

[0011] An embodiment of the present application provides an atomizer, including a second bracket. The air inlet member is disposed on the second bracket or the air inlet member is part of the second bracket. The second bracket is provided with an air inlet, and the air inlet is in gas communication with multiple intake holes.

[0012] An embodiment of the present application provides an atomizer. The second bracket defines an atomization chamber. The air inlet member is located in the atomization chamber. The air inlet surface is close to the atomization surface, and the distance between the air inlet surface and the bottom of the atomization chamber is greater than the distance between the air inlet surface and the atomization surface.

[0013] An embodiment of the present application provides an aerosol generating device, including a battery assembly and the atomizer as described in the above claims. The battery assembly supplies electric energy to the atomizer.

[0014] The projection of the intake hole of the atomizer provided by the present application on the axis of the aerosol generating device does not overlap with the projection of the center of the atomization assembly on the axis of the aerosol generating device. The air flow introduced from the intake hole to the atomization surface of the atomization assembly does not directly impact the geometric center of the atomization surface, so that the direction of the intake air flow forms a certain offset or deflection with the direction of the atomized vapor, thereby reducing the uniformity of mixing when air and atomized vapor meet, and achieving the purpose of increasing the aerosol particle size. Description of the Drawings

[0015] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0016] Figure 1 Schematic diagram of an atomizer according to an embodiment of the present application;

[0017] Figure 2 Schematic diagram of an atomizer according to an embodiment of the present application;

[0018] Figure 3 Schematic diagram of an atomization assembly according to an embodiment of the present application;

[0019] Figure 4 Schematic diagram of an atomization component according to an embodiment of the present application;

[0020] Figure 5 Schematic diagram of an air guiding member according to an embodiment of the present application;

[0021] Figure 6 Schematic diagram of an air guiding member according to an embodiment of the present application;

[0022] Figure 7 Schematic diagram of an air guiding member according to an embodiment of the present application;

[0023] Figure 8 Schematic diagram of an air guiding member according to an embodiment of the present application;

[0024] Figure 9 Schematic diagram of a first bracket according to an embodiment of the present application;

[0025] Figure 10 Schematic diagram of a second bracket according to an embodiment of the present application;

[0026] Figure 11 Schematic diagram of a second bracket according to an embodiment of the present application;

[0027] Figure 12 Schematic diagram of a conductive member according to an embodiment of the present application;

[0028] Figure 13 Schematic diagram of an aerosol generating device according to an embodiment of the present application.

[0029] In the figure:

[0030] 10, atomizer;

[0031] 1, housing; 11, liquid storage cavity; 12, first bracket; 121, mounting hole; 122, accommodation cavity; 123, liquid inlet channel; 13, air pipe; 14, second bracket; 141, air inlet; 142, through hole;

[0032] 2, atomization component; 21, liquid guiding matrix; 211, atomization surface; 212, liquid absorption surface; 22, heating element; 23, abutting portion; 24, atomization portion; 25, liquid flow channel;

[0033] 3, air inlet member; 31, air inlet surface; 32, air inlet hole;

[0034] 4, conductive member;

[0035] 20, battery assembly;

[0036] 100, aerosol generating device. Detailed implementation manners

[0037] Next, in conjunction with the accompanying drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0038] The terms "first", "second", and "third" in the present application are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship or movement situation between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0039] Referring to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element, or there may be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0041] The present application provides an atomizer 10, comprising: a housing 1, an atomization assembly 2, and an air inlet member 3. The housing 1 defines a liquid storage chamber 11 for storing a liquid matrix; the atomization assembly 2 is disposed within the housing 1, and the atomization assembly 2 includes a liquid guiding base body 21 and a heating element 22. The liquid guiding base body 21 has a liquid absorption surface 212 for receiving the liquid matrix and an atomization surface 211, and the heating element 22 is disposed on the atomization surface 211; the air inlet member 3 is disposed within the housing 1, the air inlet member 3 has an air inlet surface 31, the air inlet surface 31 is disposed opposite to the atomization surface 211, and a plurality of air inlet holes 32 facing the atomization surface 211 are provided on the air inlet surface 31. The projections of the plurality of air inlet holes 32 on the atomization surface 211 all avoid the geometric center of the atomization surface 211.

[0042] The projection of the air inlet hole 32 of the atomizer 10 provided by the present application on the axis of the atomizer 10 does not overlap with the projection of the center of the atomization assembly 2 on the axis of the atomizer 10. The air flow introduced from the air inlet hole 32 to the atomization surface 211 of the atomization assembly 2 does not directly impact the geometric center of the atomization surface 211, so that the direction of the intake air flow forms a certain offset or deflection with the direction of the atomized vapor, thereby reducing the uniformity of mixing when the air and the atomized vapor meet, and achieving the purpose of increasing the aerosol particle size.

[0043] In an embodiment of the present application, the atomizer 10 includes a first bracket 12 disposed within the housing 1. The first bracket 12 is embedded in the housing 1, and the housing 1, the first bracket 12, and the atomization assembly 2 jointly enclose the liquid storage chamber 11. The atomizer further includes an air tube 13. One end of the air tube 13 is connected to the housing 1, and the other end of the air tube 13 is connected to the first bracket 12. The first bracket 12 has a mounting hole 121 and a receiving chamber 112. The air tube 13 is inserted into the mounting hole 121, and the atomization assembly 2 is disposed in the receiving chamber 122. The first bracket 12 further has liquid inlet channels 123 located on both sides of the mounting hole 121, and the liquid inlet channels 123 are in liquid communication with the liquid storage chamber 11.

[0044] In an embodiment of the present application, the atomization assembly 2 includes an abutting portion 23 and an atomization portion 24. The abutting portion 23 abuts against the first bracket 12, so that the atomization assembly 2 is fixed in the atomizer 10. The atomization portion 24 is disposed opposite to the abutting portion 23. A liquid flow channel 25 is defined between the abutting portion 23 and the atomization portion 24. The liquid flow channel 25 is in liquid communication with the liquid storage chamber 11 through the liquid inlet channels 123 of the first bracket 12. The liquid matrix in the atomizer 10 enters the liquid flow channel 25 through the liquid inlet channels 123. The liquid matrix in the liquid flow channel 25 is absorbed by the liquid absorption surface 212 of the liquid guiding base body 21 and conducted to the atomization surface 211. The liquid matrix is atomized by the heating element 22 on the surface of the atomization surface 211 to generate an aerosol. The aerosol can be sucked by a user through the air tube 13. In an embodiment of the present application, the heating element 22 is in a π shape.

[0045] In an embodiment of the present application, the atomizer 10 further includes a second bracket 14, and the second bracket 14 and the housing 1 together constitute the appearance surface of the atomizer 10. In an embodiment of the present application, the second bracket 14 is snap-fitted to the housing 1, so that the cooperation between the second bracket 14 and the housing 1 is relatively firm. In an embodiment of the present application, the second bracket 14 can also be connected to the housing 1 by interference fit, screwing, etc. In an embodiment of the present application, the second bracket 14 further includes an air inlet 141, and the air inlet 141 is in gas communication with a plurality of air inlet holes 32, so that air can reach the plurality of air inlet holes 32 of the air inlet member 3 through the air inlet 141, and then reach the atomization surface 211 of the atomization assembly 2. In an embodiment of the present application, the number of the air inlets 141 is two. In an embodiment of the present application, the air inlet member 3 is interference-fitted to the second bracket 14, and the air inlet member 3 covers the upper part of the air inlet 141 of the second bracket 14, so that the air entering from the air inlet 141 can be blown towards the air inlet surface 31. In an embodiment of the present application, the air inlet member 3 is part of the second bracket 14, or the air inlet member 3 and the second bracket 14 are integrally formed.

[0046] In an embodiment of the present application, the atomizer 10 includes a conductive member 4, the second bracket 14 includes a through hole 142, and the conductive member 4 passes through the through hole 142 and abuts against the heating element 22. In an embodiment of the present application, one end of the conductive member 4 abuts against the heating element 22. In an embodiment of the present application, the other end of the conductive member 4 abuts against the second bracket 14. The characteristic dimension of one end of the conductive member 4 is smaller than the characteristic dimension of the through hole 142, and the characteristic dimension of the other end of the conductive member 4 is larger than the characteristic dimension of the through hole 142. The characteristic dimension of the conductive member 4 refers to the minimum dimension of the conductive member 4 in a direction other than the length direction, or the characteristic dimension of the through hole 142 refers to the minimum dimension of the through hole 142 in a direction other than the hole depth direction. For example, if the conductive member 4 is a cylinder, the characteristic dimension is the diameter of the conductive member 4; if the conductive member 4 is a prism, the characteristic dimension is the minimum side length; if the conductive member 4 is a cuboid, the characteristic dimension is the hole width; if the through hole 142 is a round hole, the characteristic dimension is the diameter of the through hole 142; if the through hole 142 is a square hole, the characteristic dimension is the minimum side length; if the through hole 142 is a long hole, the characteristic dimension is the hole width, and so on. In an embodiment of the present application, as shown in the figure, one end of the conductive member 4 is a cylinder, and the characteristic dimension of the other end of the conductive member 4 is larger than the diameter of the cylinder and is fixed to one end of the cylinder.

[0047] In an embodiment of the present application, a plurality of air intake holes 32 are circumferentially and spacedly distributed around the center of the air intake surface 31, that is, the projections of the air intake holes 32 on the axis of the atomizer 10 are circumferentially and spacedly distributed along the projection of the center of the atomizing assembly 2 on the axis of the atomizer 10. The circumferentially spaced air intake holes 32 cause the airflow blowing from the air intake surface 31 towards the atomizing surface 211 to be circumferentially distributed along the center of the atomizing assembly 2. This design causes the airflow blowing towards the atomizing assembly 2 to deviate relative to the center of the atomizing assembly 2. The atomized vapor generated at the center of the atomizing assembly 2 lacks air to converge with it. The atomized vapor at the center of the atomizing assembly 2 is not well cooled and mixed, and the degree of mixing of the atomized vapor and air is greatly reduced, thereby increasing the particle size of the aerosol. In an embodiment of the present application, the number of air intake holes 32 is six, and the centers of the six air intake holes 32 are circumferentially distributed along the center of the air intake member 3.

[0048] In an embodiment of the present application, a plurality of air intake holes 32 are circumferentially and equally spaced around the center of the air intake surface 31, that is, the projections of the air intake holes 32 on the axis of the atomizer 10 are equally spaced along the projection of the center of the atomizing assembly 2 on the axis of the atomizer 10, so that the airflow blown towards the atomizing assembly 2 by each air intake hole 32 is generally equally spaced, facilitating the particle size of the aerosol formed by the atomizer 10 to be more uniform. In an embodiment of the present application, the number of air intake holes 32 is six, and the centers of the six air intake holes 32 are circumferentially and equally spaced along the center of the air intake member 3, so that the connection lines of the centers of the six air intake holes 32 form a regular hexagon.

[0049] In an embodiment of the present application, the center of the air intake member 32 and the center of the atomizing assembly 2 substantially coincide, and at least two air intake holes 32 are symmetrically arranged with respect to the center of the air intake surface 31. In an embodiment of the present application, the connection lines of the centers of the air intake holes 32 form a rectangle, that is, the connection lines of the projections of the centers of the air intake holes 32 on the axis of the atomizer 10 form a rectangle, so that the airflow blown towards the atomizing assembly 2 by each air intake hole 32 is distributed on both sides of the center of the atomizing assembly 2, facilitating the particle size of the aerosol formed by the atomizer 10 to be more uniform. In an embodiment of the present application, the number of air intake holes 32 is six, the connection lines of the centers of the six air intake holes 32 form a rectangle, and the connection lines of the projections of the centers of the six air intake holes 32 on the atomizing surface 211 form a rectangle. In an embodiment of the present application, the six air intake holes 32 are arranged in a 2*3 array, and the three air intake holes on both sides of the center of the atomizing assembly 2 are equally spaced, so that the air from the air intake holes 32 on both sides of the air intake member 3 is evenly blown towards both sides of the atomizing assembly 2.

[0050] In an embodiment of the present application, the connecting lines of the centers of the air inlet holes 32 form a square, and the center of the air inlet member 32 and the center of the atomizing assembly 2 are substantially coincident, that is, the connecting lines of the projections of the centers of the air inlet holes 32 on the axis of the atomizer 10 form a square, so that the air flows blown from the respective air inlet holes 32 to the atomizing assembly 2 are evenly distributed, facilitating the formation of relatively uniform aerosol particle sizes by the atomizer 10. In an embodiment of the present application, the number of the air inlet holes 32 is four, the connecting lines of the centers of the four air inlet holes 32 form a square, and the connecting lines of the projections of the centers of the four air inlet holes 32 on the atomizing surface 211 form a square, so that the air of the air inlet member 3 is evenly blown to the atomizing assembly 2.

[0051] In an embodiment of the present application, the projections of the plurality of air inlet holes 32 on the atomizing surface 211 all avoid the center of the heating element 22, or the heating element 22 avoids the geometric center of the atomizing surface 211. The heating element 22 avoiding the geometric center of the atomizing surface 211 can avoid heat concentration. In an embodiment of the present application, the heating element 22 is in an Ω shape.

[0052] In an embodiment of the present application, the second bracket 14 defines an atomizing chamber, the air inlet member 3 is located in the atomizing chamber, the air inlet surface 31 is adjacent to the atomizing surface 211, and the distance between the air inlet surface 31 and the bottom of the atomizing chamber is greater than the distance between the air inlet surface 31 and the atomizing surface 211. In an embodiment of the present application, the distance between the air inlet surface 31 and the atomizing surface 211 is 3 mm - 5 mm. The distance between the air inlet surface 31 and the atomizing surface 211 is relatively small, so that the air entering the atomizing chamber from the second bracket 14 still flows relatively concentratedly to the atomizing surface 211 after passing through the air inlet surface 31, which is beneficial for the air to impact the atomizing surface 211 at a relatively fast speed, facilitating the formation of relatively large aerosol particle sizes by the mixture of the atomized vapor generated by the atomizing surface 211 and the air.

[0053] In an embodiment of the present application, the air inlet surface 31 is an arc surface convex toward the atomizing surface 211, and the air inlet holes 32 are distributed on the arc-shaped air inlet surface 31.

[0054] In an embodiment of the present application, the air inlet member 3 with an air inlet hole 32 provided at the center is used as a comparative example, the air inlet member 3 with the connecting lines of the centers of the six air inlet holes 32 forming a rectangle is used as Example 1, and the air inlet member 3 with the connecting lines of the centers of the four air inlet holes 32 forming a square is used as Example 2. The median particle size of the aerosol is detected by a smoking machine, and the results are shown in the following table:

[0055] Scheme Comparative example Example 1 Example 2 Median particle size D50 0.45μm 0.54μm 0.61μm

[0056] As can be seen from the above table, in the comparative example, when the intake hole 32 is provided at the center of the intake member 3, that is, when the atomized vapor on the surface of the atomization surface 211 and the air entering from the intake hole 32 are mixed most uniformly, the particle size of the aerosol is the smallest, which is 0.45 μm; as in Embodiment 1 and Embodiment 2, when the intake hole 32 is not provided at the center of the intake member 3, the particle size of the aerosol increases, and the fewer the intake holes 32 are, the larger the particle size of the aerosol is.

[0057] In an embodiment of the present application, the extending direction of the intake hole 32 and the center line of the intake member 3 form a certain angle, so that the air blown from the intake hole 32 to the atomization surface 211 and the atomized vapor generated by the atomization assembly 2 form a certain angle, so that the air and the atomized vapor cannot be mixed evenly, thereby increasing the particle size of the aerosol. In an embodiment of the present application, the angle between the extending direction of the intake hole 32 and the center line of the intake member 3 is greater than 0° and less than 90°.

[0058] The present application also provides an aerosol generating device, including a battery assembly 20 and the above-mentioned atomizer 10, and the battery assembly 20 provides electric energy for the atomizer 10.

[0059] It should be noted that the description and drawings of the present application give preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present application.

Claims

1. An atomizer, characterized in that, Comprising: A housing defining a liquid storage cavity for storing a liquid matrix; An atomization assembly disposed within the housing, the atomization assembly including a liquid guiding base body and a heating element, the liquid guiding base body having a liquid absorption surface and an atomization surface for receiving the liquid matrix, and the heating element being disposed on the atomization surface; An air inlet member disposed within the housing, the air inlet member having an air inlet surface, the air inlet surface and the atomization surface being oppositely disposed, and a plurality of air inlet holes facing the atomization surface being provided on the air inlet surface, and the projections of the plurality of air inlet holes on the atomization surface all avoid or deviate from the geometric center of the atomization surface.

2. The atomizer according to claim 1, wherein, The plurality of air inlet holes are circumferentially spaced apart around the center of the air inlet surface.

3. The atomizer according to claim 2, wherein, The plurality of air inlet holes are equidistantly distributed circumferentially around the center of the air inlet surface.

4. The atomizer according to claim 1, wherein, The center of the air inlet surface coincides with the geometric center of the atomization surface, and at least two of the air inlet holes are symmetrically arranged with respect to the center of the air inlet surface.

5. The atomizer according to claim 4, characterized in that The connecting lines of the centers of the plurality of air inlet holes on the air inlet surface form a rectangle, a square or a regular hexagon.

6. The atomizer according to claim 1, characterized in that, The projections of the plurality of air inlet holes on the atomization surface all avoid the center of the heating element, or the heating element avoids the geometric center of the atomization surface.

7. The atomizer according to claim 1, characterized in that, Comprising a first bracket, the atomization assembly including an abutting portion and an atomization portion, the abutting portion abutting against the first bracket, the atomization portion being oppositely disposed to the abutting portion, and a liquid flow channel being defined between the abutting portion and the atomization portion, and the liquid flow channel being in liquid communication with the liquid storage cavity.

8. The atomizer according to claim 1, characterized in that, Comprising a second bracket, the air inlet member being disposed on the second bracket or the air inlet member being part of the second bracket, and the second bracket being provided with an air inlet, and the air inlet being in gas communication with the plurality of air inlet holes.

9. The atomizer according to claim 8, characterized in that, The second bracket defines an atomization chamber, the air inlet member is located within the atomization chamber, the air inlet surface is adjacent to the atomization surface, and the distance between the air inlet surface and the bottom of the atomization chamber is greater than the distance between the air inlet surface and the atomization surface.

10. An aerosol generating device, characterized in that, Comprising a battery assembly and the atomizer according to any one of claims 1-9, and the battery assembly supplies electrical energy to the atomizer.

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