Atomizer and aerosol generating device

Abstract

The embodiment of the utility model provides an atomizer and an aerosol generating device.The atomizer is provided with an air inlet channel, an atomizing cavity and an air outlet channel which are sequentially communicated in the airflow direction, the atomizing cavity extends in the first direction, and the atomizer comprises a shell, a mounting base and an atomizing assembly; the mounting base comprises at least part of an air inlet channel and at least part of an air outlet channel, and the shell and the mounting base jointly define a liquid storage cavity; the atomizing assembly and the mounting base jointly define an atomizing cavity, the atomizing assembly is provided with an atomizing surface, the atomizing surface forms part of the inner wall of the atomizing cavity, and in a projection plane perpendicular to the first direction, at least part of projection of the atomizing surface is located in the projection range of the air outlet of the atomizing cavity. According to the atomizer in the embodiment of the invention, airflow flowing out of the atomizing cavity is smoother; the interference of the disordered airflow on the airflow flowing through the atomizing surface subsequently is reduced, and the efficiency of the airflow for taking the aerosol out of the atomizing cavity is improved.

Description

TECHNICAL FIELD

[0001] The utility model discloses an atomizer and aerosol generating device, and belongs to the technical field of atomization. BACKGROUND

[0002] The aerosol generating device is used for generating aerosol for a user to inhale.

[0003] The aerosol generating device comprises an atomizer, and the atomizer stores an aerosol generating substrate. The aerosol generating substrate can be contacted and absorbed by an atomization assembly in the atomizer. The atomization assembly atomizes the aerosol generating substrate by heating or other methods. The atomized aerosol generating substrate mixes with airflow to form aerosol.

[0004] In the related art, the atomizer is provided with an atomization cavity, and an atomization body of the atomization assembly is located in the atomization cavity. In this way, the aerosol generated by the atomization assembly can mix with air in the atomization cavity and be discharged from the atomizer. Therefore, the relative position relationship between the atomization cavity and the part of the atomization assembly located in the atomization cavity directly affects the mixing effect of the aerosol and the air. SUMMARY

[0005] Therefore, the utility model embodiment expects to provide an atomizer and an aerosol generating device that can improve the mixing effect of the aerosol generating substrate and the airflow.

[0006] To achieve the above object, the technical scheme of the utility model embodiment is as follows:

[0007] The utility model embodiment provides an atomizer, which is provided with an air inlet channel, an atomization cavity and an air outlet channel that are sequentially communicated along the airflow direction. The atomization cavity extends along a first direction. The atomizer comprises:

[0008] a shell;

[0009] a mounting seat, which comprises at least part of the air inlet channel and at least part of the air outlet channel. The shell and the mounting seat jointly enclose a liquid storage cavity;

[0010] an atomization assembly, which jointly encloses the atomization cavity with the mounting seat. The atomization assembly has an atomization surface, which forms part of the inner wall of the atomization cavity. In a projection plane perpendicular to the first direction, at least part of the projection of the atomization surface is located within the projection range of the air outlet of the atomization cavity.

[0011] In some embodiments, in the projection plane perpendicular to the first direction, the geometric center of the projection range of the air outlet of the atomization cavity is a first center, and the first center is located on the side of the projection of the atomization surface away from the atomization assembly.

[0012] In some embodiments, the atomization face is parallel to the first direction, and a distance between the first center and the atomization face is not more than 1.75 mm along a normal direction of the atomization face.

[0013] In some embodiments, the atomization face is parallel to the first direction, and an inner wall of the atomization cavity comprises a first wall, the first wall is arranged opposite to the atomization face along the normal direction of the atomization face, and a distance between the atomization face and the first wall is 2 mm to 4.5 mm.

[0014] In some embodiments, the atomization face is parallel to the first direction, and a projection of the atomization face is located outside a projection range of an air inlet of the atomization cavity in a projection plane perpendicular to the first direction, and a minimum distance between a projection contour of the air inlet and the projection of the atomization face is not more than 1.1 mm along a normal direction of the atomization face.

[0015] In some embodiments, the atomization face is parallel to the first direction, and at least a part of a projection of the atomization face is located within a projection range of an air inlet of the atomization cavity in a projection plane perpendicular to the first direction, and a minimum distance between a projection contour of the air inlet and the projection of the atomization face is not more than 0.2 mm along a normal direction of the atomization face.

[0016] In some embodiments, the projection of the atomization face is completely located within a projection range of an air outlet of the atomization cavity.

[0017] In some embodiments, the projection range of the air outlet of the atomization cavity is in one of a circle, an ellipse, a square and a rectangle in a projection plane perpendicular to the first direction.

[0018] In some embodiments, an area of the projection range of the air outlet of the atomization cavity is greater than 6.8 mm 2 .

[0019] In some embodiments, the atomization face is parallel to the first direction, and a projection range of an air outlet of the atomization cavity is in a rectangle and a long side of the rectangle is parallel to the atomization face in a projection plane perpendicular to the first direction.

[0020] In some embodiments, the atomization face is parallel to the first direction, and a projection range of an air inlet of the atomization cavity is in a rectangle and a long side of the rectangle is parallel to the atomization face in a projection plane perpendicular to the first direction.

[0021] In some embodiments, an area of the projection range of the air inlet of the atomization cavity is greater than 3.0 mm 2 .

[0022] Embodiments of the present application also provide an aerosol generating device, which comprises the atomizer.

[0023] The atomizer in the embodiments of the present application makes the projection of the atomizing surface at least partially coincide with the projection of the gas outlet of the atomizing cavity, so that the airflow flowing through the atomizing surface is less likely to be diverted or bounced by the physical structure of the gas outlet of the atomizing cavity after flowing to the gas outlet in the first direction, which reduces the risk of airflow turbulence and facilitates smoother airflow out of the atomizing cavity. The disturbed airflow also reduces the interference on the subsequent airflow flowing through the atomizing surface, which facilitates the mixing of the subsequent airflow and the atomized aerosol generating substrate to meet the expected effect and improves the efficiency of the airflow in carrying the aerosol out of the atomizing cavity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a schematic view of an atomizer in a first embodiment of the present application;

[0025] Figure 2 FIG. 2 is a schematic view of the atomizer in the first embodiment of the present application from another perspective; Figure 1

[0026] Figure 3 FIG. 4 is a cross-sectional view of the atomizer in the first embodiment of the present application at position A-A; Figure 2

[0027] Figure 4 FIG. 6 is a partial enlarged view of the atomizer in the first embodiment of the present application at position B; Figure 3

[0028] Figure 5 FIG. 8 is a cross-sectional view of the atomizer in the first embodiment of the present application at position C-C; Figure 3

[0029] Figure 6 FIG. 10 is a comparison chart of the carrying-out efficiency of aerosols of different particle size ranges and the carrying-out efficiency of aerosols in general carried out of the atomizing cavity by the airflow at different distances between the first center and the atomizing surface in multiple embodiments of the present application;

[0030] Figure 7 FIG. 12 is a cross-sectional view of the atomizer in the first embodiment of the present application at position D-D; Figure 3

[0031] Figure 8 FIG. 14 is a partial cross-sectional enlarged view of an atomizer in a second embodiment of the present application, which is enlarged at the same position B as that in the first embodiment; Figure 3

[0032] Figure 9 FIG. 18 is a comparison chart of the carrying-out efficiency of aerosols of different particle size ranges and the carrying-out efficiency of aerosols in general carried out of the atomizing cavity by the airflow in the embodiment in which the distance between the projection profile of the gas inlet close to the atomizing assembly and the projection of the atomizing surface in multiple embodiments of the present application;

[0033] Figure 10 ​​​​​​Fig. 3 is a schematic view of a cross section of the atomizer in the third embodiment of the present application, the cross section position of which is the same as the C-C position in Fig. 1; Figure 3 Fig. 4 is a schematic view of a cross section of the atomizer in the fourth embodiment of the present application, the cross section position of which is the same as the C-C position in Fig. 1;

[0034] Figure 11 Fig. 5 is a schematic view of a cross section of the atomizer in the fifth embodiment of the present application, the cross section position of which is the same as the C-C position in Fig. 1; Figure 3 Fig. 6 is a schematic view of a cross section of the atomizer in the sixth embodiment of the present application, the cross section position of which is the same as the C-C position in Fig. 1;

[0035] Figure 12 Fig. 7 is a schematic view of a cross section of the atomizer in the seventh embodiment of the present application, the cross section position of which is the same as the C-C position in Fig. 1; Figure 3 Fig. 8 is a schematic view of a cross section of the atomizer in the eighth embodiment of the present application, the cross section position of which is the same as the C-C position in Fig. 1;

[0036] Figure 13 Fig. 9 is a schematic view of the mounting seat in an embodiment of the present application;

[0037] Figure 14 Fig. 10 is a schematic view of the mounting seat in another embodiment of the present application; Figure 13 Fig. 11 is a schematic view of the mounting seat in another embodiment of the present application.

[0038] Legend of reference signs

[0039] 10, atomizer; 10a, atomizing cavity; 10aa, first wall; 10b, air outlet passage; 11, atomizing assembly; 11a, atomizing surface; 111, liquid guide; 112, atomizing body; 12, housing; 12a, liquid storage cavity; 12b, discharge passage; 121, mounting column; 13, mounting seat; 13a, mounting cavity; 13b, mounting hole; 13c, air inlet; 13ca, second center; 13d, air outlet; 13da, first center; 13e, air outlet passage; 13f, air inlet passage; 14, sealing sleeve. DETAILED DESCRIPTION

[0040] It should be noted that the embodiments in the present application and the technical features in the embodiments can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as the explanation and description of the purpose of the present application, and should not be regarded as improper limitation of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and the above description of drawings of the present application are intended to cover non-exclusive inclusion.

[0042] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0043] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The occurrence of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0045] In the description of the embodiments of the present application, for the convenience of description, as shown in the drawings of the specification, the direction of the arrow X is the straight line direction of the "first direction".

[0046] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0048] The present application provides an atomizer 10, referring to Figures 1 to 5 , Figure 13 The atomizer 10 is provided with an air inlet channel 13f, an atomizing cavity 10a and an air outlet channel 10b which are sequentially communicated in the airflow direction, and the atomizing cavity 10a extends in the first direction.

[0049] The atomizer 10 comprises a housing 12, a mounting base 13 and an atomization assembly 11.

[0050] The mounting base 13 comprises at least part of an air inlet passage 13f and at least part of an air outlet passage 10b, and the housing 12 and the mounting base 13 jointly define a liquid storage cavity 12a.

[0051] The atomization assembly 11 and the mounting base 13 jointly define an atomization cavity 10a. The atomization assembly 11 has an atomization surface 11a, which forms part of the inner wall of the atomization cavity 10a. In a projection plane perpendicular to the first direction, at least part of the projection of the atomization surface 11a is within the projection range of an air outlet 13d of the atomization cavity 10a.

[0052] Air outside the atomizer 10 can form an air flow into the mounting base 13, and can enter one end of the atomization cavity 10a and flow out from the other end, and finally flow out of the atomizer 10. The opening of the atomization cavity 10a at which the air flow enters is an air inlet 13c of the atomization cavity 10a, and the opening of the atomization cavity 10a at which the air flow flows out is an air outlet 13d of the atomization cavity 10a.

[0053] The liquid storage cavity 12a is used to store an aerosol generating substrate. The aerosol generating substrate is a fluid medium that can flow in the liquid storage cavity 12a.

[0054] The atomization assembly 11 is used to atomize the aerosol generating substrate by heating or the like.

[0055] The atomization surface 11a refers to the part of the outer surface of the atomization assembly 11 that can generate aerosol.

[0056] In some of the embodiments 3, the atomization assembly 11 comprises a liquid guide 111 and an atomization body 112, the atomization body 112 is located on the surface of the liquid guide 111, and the aerosol generating substrate in the liquid storage cavity 12a can be conducted to the atomization body 112 through the liquid guide 111 to form aerosol. In these embodiments, the area of the surface of the liquid guide 111 covered by the atomization body is the atomization surface 11a.

[0057] In other embodiments, the atomization assembly comprises an atomization body 112, and the part of the surface of the atomization body 112 that atomizes the aerosol generating substrate in contact therewith is the atomization surface 11a.

[0058] It can be understood that the air flow in the atomization cavity 10a flows along the extension direction of the atomization cavity 10a, i.e. along the first direction.

[0059] It can be understood that part of the air flow flowing in the first direction in the atomization cavity 10a can flow through the atomization surface 11a to mix with the aerosol generating substrate atomized by the atomization surface 11a to form aerosol.

[0060] It can be understood that at least part of the air outlet 13d of the atomization cavity 10a is located on one side of the atomization surface 11a along the first direction.

[0061] The atomization surface 11a and the structure of the mounting seat 13 for forming the air outlet 13d of the atomization cavity 10a are staggered in a direction perpendicular to the first direction.

[0062] In the atomizer 10 in the embodiments of the present application, by making the projection of the atomization surface 11a at least partially coincide with the projection of the air outlet 13d of the atomization cavity 10a, the airflow flowing through the atomization surface 11a is reduced in the risk of being diverted and rebounded due to the blocking of the entity structure forming the air outlet 13d of the atomization cavity 10a after flowing to the air outlet 13d along the first direction, which is conducive to making the airflow flowing out of the atomization cavity more smooth; it also reduces the interference of the turbulent airflow on the subsequent airflow flowing through the atomization surface 11a, which is conducive to making the mixing effect of the subsequent airflow and the atomized aerosol generating substrate meet the expectations, and is conducive to improving the efficiency of the airflow in carrying the aerosol out of the atomization cavity 10a.

[0063] The atomization surface 11a can realize the atomization of the aerosol generating substrate in contact therewith by heating or the like.

[0064] The specific way of forming the atomization cavity 10a is not limited.

[0065] Exemplarily, referring to Figure 13 The mounting seat 13 includes a mounting cavity 13a and a mounting hole 13b, the mounting cavity 13a extends along the first direction, the mounting hole 13b is located on the side of the mounting cavity 13a perpendicular to the first direction and communicates the mounting cavity 13a with the outside of the mounting seat 13, and the atomization assembly 11 blocks the mounting hole 13b to form the atomization cavity 10a together with the mounting seat 13.

[0066] The atomization assembly 11 blocks the mounting hole 13b, on the one hand, so that the aerosol generating substrate in the liquid storage cavity 12a and the airflow in the atomization cavity 10a are difficult to exchange flow directly between the mounting channel and the liquid storage cavity 12a; on the other hand, the atomization assembly 11 can absorb the aerosol generating substrate from the liquid storage cavity 12a and make the aerosol generated thereby diffuse directly into the mounting cavity.

[0067] It can be understood that the opening formed by the communication position of the mounting hole 13b and the atomization cavity 10a is neither the air inlet 13c of the atomization cavity 10a nor the air outlet 13d of the atomization cavity 10a.

[0068] The atomization surface 11a can be a plane or an arc surface.

[0069] In some embodiments, referring to Figure 4 and Figure 5In the projection plane perpendicular to the first direction, the geometric center of the projection range of the air outlet 13d of the atomization cavity is a first center 13da, and the first center 13da is located on the side of the projection of the atomization face 11a away from the atomization assembly 11.

[0070] The first center 13da is the geometric center of the geometric figure formed by the projection of the air outlet 13d.

[0071] That is, the first center 13da is located outside the projection of the atomization assembly 11, and the first center 13da is spaced apart from the projection of the atomization assembly 11 along the relative direction of the first center 13da and the atomization face 11a.

[0072] In this way, it is beneficial to enable the airflow in the atomization cavity 10a to flow out of the atomization cavity 10a along the first direction more directly, and to enable the flow rate of the airflow flowing out of the atomization cavity 10a to meet the demand and reduce the suction resistance during user suction.

[0073] In some embodiments, referring to Figure 3 , the atomization face 11a is parallel to the first direction.

[0074] That is, the atomization face 11a is a plane and extends along the first direction.

[0075] In this way, it is beneficial to increase the probability of the airflow in the atomization cavity 10a contacting the atomization face 11a during the airflow flowing along the first direction, to improve the mixing effect between the airflow and the atomized aerosol generating substrate, and to reduce the adverse effect of the atomization face 11a on the airflow flowing in the atomization cavity 10a, and to enable the airflow in the atomization cavity to flow more smoothly.

[0076] It can be understood that, since the atomization face 11a is parallel to the first direction, in the projection plane perpendicular to the first direction, the projection profile of the atomization face 11a is a line segment.

[0077] In some embodiments, referring to Figure 4 and Figure 5 , along the normal direction of the atomization face 11a, the distance between the first center 13da and the atomization face 11a is not more than 1.75 mm (millimetre). That is, the distance between the first center 13da and the atomization face 11a is A, and A≤1.75 mm.

[0078] Referring to Figure 6 , the vertical axis represents the numerical value of the entrainment efficiency, and the horizontal axis A1, A2, A3, A4, A5 respectively represent different distances between the first center 13da and the atomization face 11a. Among them, A1=0 mm, A2=0.45 mm, A3=0.9 mm, A4=1.32 mm, and A5=1.75 mm.

[0079] The small particle size section refers to aerosols with a diameter in the range of 0.8 μm (micrometer) to 2 μm; the medium particle size section refers to aerosols with a diameter in the range of 2.5 μm to 8 μm; and the large particle size section refers to aerosols with a diameter in the range of 10 μm to 50 μm.

[0080] It can be seen that the carry-out efficiency of the aerosols in the small particle size section first increases and then decreases as the value of A increases, and decreases when the maximum distance exceeds A4; the carry-out efficiency of the aerosols in the medium particle size section also increases as the value of A increases, and decreases significantly when the maximum distance exceeds A4; and the carry-out efficiency of the aerosols in the large particle size section also increases as the value of A increases, and decreases significantly when the maximum distance exceeds A4. Figure 6 It can be seen that the carry-out efficiency of the aerosols in the small particle size section first increases and then decreases as the value of A increases, and decreases when the maximum distance exceeds A4; the carry-out efficiency of the aerosols in the medium particle size section also increases as the value of A increases, and decreases significantly when the maximum distance exceeds A4; and the carry-out efficiency of the aerosols in the large particle size section also increases as the value of A increases, and decreases significantly when the maximum distance exceeds A4.

[0081] Figure 6 It can be seen that the carry-out efficiency of the aerosols in the small particle size section first increases and then decreases as the value of A increases, and decreases when the maximum distance exceeds A4; the carry-out efficiency of the aerosols in the medium particle size section also increases as the value of A increases, and decreases significantly when the maximum distance exceeds A4; and the carry-out efficiency of the aerosols in the large particle size section also increases as the value of A increases, and decreases significantly when the maximum distance exceeds A4.

[0082] Therefore, within the above range, the efficiency of the aerosol particles leaving the atomization cavity 10a along with the airflow is improved, and the residual aerosols in the atomization cavity 10a are reduced, which is beneficial to improving the user experience.

[0083] In some embodiments, the distance between the first center 13da and the atomization face 11a is in the range of 0.7 mm to 1.1 mm. That is, 0.7 mm≤A≤1.1 mm. In this way, the efficiency of the aerosols leaving the atomization cavity 10a is further improved.

[0084] The distance between the first center 13da and the atomization face 11a can be 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.3 mm, 1.32 mm, 1.4 mm, 1.5 mm, 1.75 mm, etc.

[0085] It can be understood that, in the embodiment in which the atomization face 11a is parallel to the first direction, referring to Figure 4 Since the first center 13da is located on the side of the projection of the atomization face 11a away from the atomization assembly 11, the distance between the first center 13da and the atomization face 11a along the normal direction of the atomization face 11a is A, and the distance between the first center 13da and the projection contour of the air outlet 13d on the edge of the atomization face 11a away from the first center 13da is L1, A

[0086] In some embodiments, referring to Figure 4 ​The atomization face 11a is parallel to the first direction, and the inner wall of the atomization cavity 10a includes a first wall 10aa, which is arranged opposite to the atomization face 11a along the normal direction of the atomization face 11a, and the distance between the atomization face 11a and the first wall 10aa is 2 mm to 4.5 mm. That is, the distance between the atomization face 11a and the first wall 10aa is L3, and 2 mm≤L3≤4.5 mm.

[0087] In this way, the aerosol generated by the atomization face 11a is less likely to contact the first wall 10aa and cause the aerosol to re-condense, thereby improving the efficiency of the aerosol flowing out of the atomizer 10.

[0088] The specific value of the distance between the atomization face 11a and the first wall 10aa can be 2 mm, 2.5 mm, 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4 mm, or 4.5 mm.

[0089] In some embodiments, the distance between the atomization face 11a and the first wall 10aa is 3 mm to 4 mm.

[0090] In this way, the probability of the aerosol generated by the atomization face 11a contacting the first wall 10aa and causing the aerosol to re-condense is reduced, and at the same time, the space of the atomization cavity 10a is more compact, thereby improving the efficiency of the airflow flowing out of the atomization cavity 10a.

[0091] It can be understood that, in some embodiments in which the mounting seat 13 includes a mounting cavity 13a, part of the inner wall of the mounting cavity 13a forms the first wall 10aa.

[0092] In some embodiments, referring to Figure 4 and Figure 5 In a projection plane perpendicular to the first direction, the projection of the atomization face 11a is located outside the projection range of the air inlet 13c of the atomization cavity 10a.

[0093] That is, the atomization face 11a and the structure of the mounting seat 13 for forming the air inlet 13c of the atomization cavity 10a are staggered in the direction perpendicular to the first direction.

[0094] In this way, after the airflow flows into the atomization cavity 10a from the air inlet 13c, the airflow is not blocked by the atomization assembly 11 itself, which facilitates the airflow to flow through the atomization face 11a more smoothly, thereby facilitating the mixing effect between the airflow and the aerosol.

[0095] In some embodiments in which the atomization face 11a is parallel to the first direction and the projection of the atomization face 11a is located outside the projection range of the air inlet 13c of the atomization cavity 10a, referring to Figure 5 and Figure 7In the projection plane perpendicular to the first direction, the minimum distance between the projection profile of the air inlet 13c and the projection of the atomization face 11a in the direction of the normal line of the atomization face 11a is not greater than 1.1 mm. That is, the distance between the projection profile of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is B, and B≤1.1 mm.

[0096] It can be understood that, in these embodiments, referring to Figure 7 In the projection plane perpendicular to the first direction, the geometric center of the projection range of the air inlet 13c is a second center 13ca, the second center 13ca is located on the side of the projection of the atomization face 11a away from the atomization assembly 11, and the distance between the second center 13ca and the atomization face 11a in the direction of the normal line of the atomization face 11a is L2. The distance between the projection profile of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is B, and B≤L2.

[0097] Therefore, within the above range, the efficiency of the aerosol particles leaving the atomization cavity 10a along with the airflow is improved, the residual aerosol in the atomization cavity 10a is reduced, and the user's experience is improved.

[0098] In some embodiments, the distance between the projection profile of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a ranges from 0.2 mm to 0.4 mm. That is, 0.2 mm≤B≤0.4 mm. In this way, the efficiency of the aerosol leaving the atomization cavity 10a is further improved.

[0099] In the above embodiments, the specific value of the distance between the projection profile of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a can be 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, or 1.1 mm.

[0100] It should be noted that the distance between the projection profile of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is 0 mm, which means that a part of the projection profile of the air inlet 13c coincides with the projection of the atomization face 11a.

[0101] In some embodiments, referring to Figure 8, the atomization face 11a is parallel to the first direction, in a projection plane perpendicular to the first direction, at least part of the projection of the atomization face 11a is located within the projection range of the air inlet 13c of the atomization cavity 10a, and along the normal direction of the atomization face 11a, the distance between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is not more than 0.2mm. That is, the distance between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is B, and B≤0.2mm.

[0102] Therefore, within the above range, it is beneficial to improve the efficiency of the particles of the aerosol leaving the atomization cavity 10a along with the airflow, reduce the residue of the aerosol in the atomization cavity 10a, and improve the user's experience.

[0103] In the above embodiment, the specific value of the distance between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, etc.

[0104] Referring to Figure 9 , the vertical axis represents the numerical value of the entrainment efficiency. The horizontal axis B1, B2, B3, B4, B5, B6 respectively represent different distances between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a. Among them, B1=-0.2mm, B2=0mm, B3=0.4mm, B4=0.55mm, B5=0.7mm, B6=1.1mm.

[0105] It can be seen from Figure 9 that the total entrainment efficiency first increases as the air inlet 13c moves away from the ceramic center, and then decreases when the value of B exceeds 1.1mm; when the value of B is less than-0.2mm, part of the air inlet 13c is blocked by the atomization assembly 11, and the entrainment efficiency of the medium particle size section and the large particle size section is lower than that of other values of B in this range; when the value of B is greater than 1.1mm, the entrainment efficiency of the small particle size section and the medium particle size section is low.

[0106] It should be noted that, in Figure 9In some embodiments, the value of B is -0.2 mm, which means that in the projection plane perpendicular to the first direction, at least a part of the projection of the atomization face 11a is located within the projection range of the air inlet 13c of the atomization cavity 10a, and along the normal direction of the atomization face 11a, the distance between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is 0.2 mm. The value of B is 0.4 mm, which means that in the projection plane perpendicular to the first direction, the projection of the atomization face 11a is located outside the projection range of the air inlet 13c of the atomization cavity 10a, and along the normal direction of the atomization face 11a, the distance between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a is 0.4 mm. That is, the positive and negative values of B represent two opposite directions along the normal direction of the atomization face 11a, respectively, and the distance between the projection contour of the air inlet 13c close to one end of the atomization assembly 11 and the projection of the atomization face 11a.

[0107] In some embodiments, the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a along the first direction is greater than 0.2 mm. That is, the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a is L2, and L2>0.2 mm.

[0108] In this way, it is beneficial to make the airflow entering the atomization cavity 10a have enough space to diffuse to contact the edge of the atomization face 11a, thereby facilitating the mixing effect between the airflow and the aerosol.

[0109] The specific value of the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a can be 0.21 mm, 0.22 mm, 0.23 mm, 0.25 mm, 0.26 mm, 0.28 mm, 0.3 mm, 0.35 mm, 0.4 mm, etc.

[0110] In some embodiments, in the projection plane perpendicular to the first direction, a part of the projection of the atomization face 11a is located within the projection range of the air outlet 13d of the atomization cavity 10a, and a part of the projection of the atomization face 11a is located outside the projection range of the air outlet 13d of the atomization cavity 10a.

[0111] In this way, it is beneficial to reduce the process difficulty of manufacturing the atomization face 11a of the atomization assembly 11 and reduce the manufacturing cost.

[0112] In other embodiments, in the projection plane perpendicular to the first direction, the projection of the atomization face 11a is entirely located within the projection range of the air outlet 13d of the atomization cavity 10a.

[0113] In this way, it is beneficial to make the airflow and the aerosol flowing through the atomization face 11a continue to flow along the first direction directly through the air outlet 13d as much as possible, so as to improve the efficiency of taking the aerosol out of the atomization cavity 10a. In some embodiments, the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a along the first direction is greater than 0.2 mm. That is, the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a is L2, and L2>0.2 mm.

[0108] In this way, it is beneficial to make the airflow entering the atomization cavity 10a have enough space to diffuse to contact the edge of the atomization face 11a, thereby facilitating the mixing effect between the airflow and the aerosol.

[0109] The specific value of the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a can be 0.21 mm, 0.22 mm, 0.23 mm, 0.25 mm, 0.26 mm, 0.28 mm, 0.3 mm, 0.35 mm, 0.4 mm, etc.

[0110] In some embodiments, in the projection plane perpendicular to the first direction, a part of the projection of the atomization face 11a is located within the projection range of the air outlet 13d of the atomization cavity 10a, and a part of the projection of the atomization face 11a is located outside the projection range of the air outlet 13d of the atomization cavity 10a.

[0111] In this way, it is beneficial to reduce the process difficulty of manufacturing the atomization face 11a of the atomization assembly 11 and reduce the manufacturing cost.

[0112] In other embodiments, in the projection plane perpendicular to the first direction, the projection of the atomization face 11a is entirely located within the projection range of the air outlet 13d of the atomization cavity 10a.

[0113] In this way, it is beneficial to make the airflow and the aerosol flowing through the atomization face 11a continue to flow along the first direction directly through the air outlet 13d as much as possible, so as to improve the efficiency of taking the aerosol out of the atomization cavity 10a. In some embodiments, the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a along the first direction is greater than 0.2 mm. That is, the distance between the atomization face 11a and the air inlet 13c of the atomization cavity 10a is L2, and L2>0.2 mm.

[0114] In some embodiments, referring to Figure 5 , Figure 10 , Figure 11 and Figure 12 , in a projection plane perpendicular to the first direction, the projection range of the air outlet 13d is one of a circle, an ellipse, a square and a rectangle.

[0115] Figure 5 and Figure 14 for the embodiment in which the projection range of the air outlet 13d is a square, Figure 10 for the embodiment in which the projection range of the air outlet 13d is a circle, Figure 11 for the embodiment in which the projection range of the air outlet 13d is an ellipse, Figure 12 for the embodiment in which the projection range of the air outlet 13d is a rectangle.

[0116] In this way, the shape of the air outlet 13d is regular, which facilitates the airflow and aerosol to flow out of the atomization cavity 10a more smoothly, reducing the resistance of airflow flow.

[0117] In some embodiments, the air outlet channel 10b is entirely located in the mounting seat 13, that is, the mounting seat 13 directly communicates with the outside of the atomizer 10.

[0118] In other embodiments, referring to Figure 3 , the shell 12 is provided with a cavity, the cavity is open along one side of the first direction, and the mounting seat 13 is plugged at the open position of the cavity to form a liquid storage cavity 12a with the shell 12, the cavity is provided with a mounting column 121 extending along the first direction, the mounting column 121 is provided with a discharge channel 12b penetrating through to communicate with the outside of the atomizer 10, the mounting seat 13 further includes a take-out channel 13e, the take-out channel 13e communicates the atomization cavity 10a with the outside of the mounting seat 13 and is located downstream of the atomization cavity 10a along the airflow flow direction, a part of the mounting column 121 is inserted into the take-out channel 13e to make the discharge channel 12b communicate with the take-out channel 13e, and the discharge channel 12b and the take-out channel 13e jointly form the air outlet channel 10b.

[0119] In this way, the aerosol discharged by the atomization cavity 10a can be discharged out of the atomizer 10 through the discharge channel 12b for the user to smoke.

[0120] It can be understood that the air outlet 13d of the atomization cavity 10a corresponds to the inlet of the take-out channel 13e.

[0121] In some embodiments provided with the discharge channel 12b, referring to Figure 4 and Figure 5 , in a projection plane perpendicular to the first direction, at least part of the projection of the atomization surface 11a is located within the projection range of the discharge channel 12b.

[0122] Thus, it is beneficial for the aerosol to flow more smoothly into the discharge passage 12b.

[0123] In the embodiment in which the atomization face 11a is parallel to the first direction, referring to Figure 4 and Figure 5 , along the normal direction of the atomization face 11a, the distance between the first center 13da and the atomization face 11a is A, and the distance between the projection outline of the inlet of the discharge passage 12b and the edge of the atomization face 11a on the side away from the first center 13da is L4, A < L4.

[0124] Thus, it is beneficial for the aerosol to flow more smoothly into the discharge passage 12b.

[0125] It can be understood that, referring to Figure 4 and Figure 5 , A < L4 ≤ L1.

[0126] In some embodiments in which the mounting cavity 13a is provided, the carrying-out passage 13e is in communication with the mounting cavity 13a.

[0127] In some embodiments in which the gas outlet 13d of the atomization cavity 10a is rectangular, in the projection plane perpendicular to the first direction, the projection of the carrying-out passage 13e is rectangular, and the projection of the mounting column 121 is circular or elliptical, so as to increase the sealing structure between the mounting column 121 and the inner wall of the carrying-out passage 13e, and improve the sealing performance.

[0128] In some embodiments, referring to Figure 4 and Figure 5 , the atomizer 10 further comprises a sealing sleeve 14, and a portion of the sealing sleeve 14 is clamped between the mounting column 121 and the inner wall of the carrying-out passage 13e, so as to improve the sealing performance.

[0129] In the projection plane perpendicular to the first direction, the outer contour projection shape of the structure formed by the mounting column 121 to the inlet of the discharge passage 12b is one of circular, elliptical, square and rectangular. For example, referring to Figure 5 , the outer contour projection shape of the structure formed by the mounting column 121 to the inlet of the discharge passage 12b is circular.

[0130] In some embodiments, in the projection plane perpendicular to the first direction, the projection range of the gas outlet 13d has an area greater than 6.8 mm 2 (square millimetre, square millimeter).

[0131] Thus, it is beneficial to improve the efficiency of the aerosol discharging from the atomization cavity 10a, reduce the flow rate of the airflow flowing out of the atomization cavity 10a, make the flow of the airflow more gentle, and reduce the probability of abnormal sound generated by the airflow in the flow process.

[0132] The specific value of the area of the projection range of the air outlet 13d can be 6.81 mm 2 , 6.85 mm 2 , 6.9 mm 2 , 7 mm 2 , 7.1 mm 2 , 7.2 mm 2 , 7.3 mm 2 , 7.4 mm 2 , 7.5 mm 2 .

[0133] In some embodiments in which the atomization face 11a is parallel to the first direction, the projection range of the air inlet 13c of the atomization assembly 11 is rectangular in a projection plane perpendicular to the first direction, and the long side of the rectangle is parallel to the atomization face 11a. Figure 12

[0134] The long side of the rectangle, that is, the longer one of the two sides of the rectangle perpendicular to each other.

[0135] In this way, it is beneficial to increase the range of the airflow in the atomization cavity 10a that can come into contact with the atomization face 11a, and improve the mixing effect between the airflow and the aerosol.

[0136] In some embodiments in which the atomization face 11a is parallel to the first direction, the projection range of the air inlet 13c of the atomization assembly 11 is rectangular in a projection plane perpendicular to the first direction, and the long side of the rectangle is parallel to the atomization face 11a. Figure 7

[0137] In this way, it is beneficial to increase the range of the airflow in the atomization cavity 10a that can come into contact with the atomization face 11a, and improve the mixing effect between the airflow and the aerosol.

[0138] In some embodiments, the area of the projection range of the air inlet 13c of the atomization assembly 11 is greater than 3.0 mm 2 .

[0139] In this way, it is beneficial to make the airflow flow into the atomization cavity 10a meet the demand and reduce the resistance of the airflow entering the atomization cavity 10a.

[0140] The specific value of the cross-sectional area of the air inlet 13c of the atomization cavity 10a can be 3.1 mm 2 , 3.2 mm 2 , 3.3 mm 2 , 3.4 mm 2 , 3.5 mm 2 , 3.6 mm 2 , 3.8 mm 2 , 4.0 mm 2 , 4.2 mm 2 ​​4.5mm 2 5mm 2 etc.

[0141] In some embodiments, referring to Figure 14 In a projection plane perpendicular to the first direction, the projection of the air inlet 13c of the atomization cavity 10a at least partially coincides with the projection of the air outlet 13d of the atomization cavity 10a, so as to reduce the probability of turbulence generated by the airflow flowing in the atomization cavity.

[0142] The embodiments of the present application also provide an aerosol generating device, which comprises the atomizer 10 in the foregoing embodiments, so as to improve the efficiency of the airflow in carrying the aerosol out of the atomizer 10 and improve the user experience.

[0143] In some embodiments, the aerosol generating device further comprises a power supply assembly electrically connected to the atomization assembly 11 to provide electric energy to the atomization assembly 11, so that the atomization assembly 11 converts the electric energy into heat energy.

[0144] The various embodiments / implementation manners of the present application can be combined with each other without contradiction.

[0145] The above merely describes the preferred technical solutions of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application. For those skilled in the art, the embodiments of the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. An atomizer, characterized in that, The atomizer is provided with an air inlet channel, an atomizing chamber, and an air outlet channel that are sequentially connected along the airflow direction. The atomizing chamber extends along a first direction. The atomizer includes: case; The mounting base includes at least a portion of the air inlet channel and at least a portion of the air outlet channel, and the housing and the mounting base together enclose a liquid storage cavity; An atomizing component, together with the mounting base, forms the atomizing cavity. The atomizing component has an atomizing surface, which forms part of the inner wall of the atomizing cavity. In a projection plane perpendicular to the first direction, at least a portion of the projection of the atomizing surface is located within the projection range of the air outlet of the atomizing cavity.

2. The atomizer according to claim 1, characterized in that, In the projection plane perpendicular to the first direction, the geometric center of the projection range of the air outlet of the atomizing cavity is the first center, and the first center is located on the side of the projection of the atomizing surface away from the atomizing component.

3. The atomizer according to claim 2, characterized in that, The atomizing surface is parallel to the first direction. Along the normal direction of the atomizing surface, the distance between the first center and the atomizing surface does not exceed 1.75 mm. And / or, the atomizing surface is parallel to the first direction, the inner wall of the atomizing cavity includes a first wall, which is arranged at intervals relative to the atomizing surface along the normal direction of the atomizing surface, and the distance between the atomizing surface and the first wall is 2mm to 4.5mm.

4. The atomizer according to claim 1, characterized in that, The atomizing surface is parallel to the first direction. In the projection plane perpendicular to the first direction, the projection of the atomizing surface is located outside the projection range of the air inlet of the atomizing cavity. Along the normal direction of the atomizing surface, the minimum distance between the projection outline of the air inlet and the projection of the atomizing surface is no greater than 1.1 mm.

5. The atomizer according to claim 1, characterized in that, The atomizing surface is parallel to the first direction. In a projection plane perpendicular to the first direction, at least a portion of the projection of the atomizing surface is located within the projection range of the air inlet of the atomizing cavity. Along the normal direction of the atomizing surface, the minimum distance between the projection outline of the air inlet and the projection of the atomizing surface does not exceed 0.2 mm.

6. The atomizer according to any one of claims 1-5, characterized in that, The projection of the atomizing surface is completely within the projection range of the air outlet of the atomizing chamber.

7. The atomizer according to any one of claims 1-5, characterized in that, In a projection plane perpendicular to the first direction, the projection range of the air outlet of the atomizing cavity is one of a circle, an ellipse, a square, and a rectangle. And / or, the projected area of ​​the air outlet of the atomizing chamber is greater than 6.8 mm². 2 .

8. The atomizer according to any one of claims 1-5, characterized in that, The atomizing surface is parallel to the first direction. In the projection plane perpendicular to the first direction, the projection range of the air outlet of the atomizing chamber is rectangular, and the long side of the rectangle is parallel to the atomizing surface.

9. The atomizer according to any one of claims 1-5, characterized in that, The atomizing surface is parallel to the first direction. In the projection plane perpendicular to the first direction, the air inlet projection range of the atomizing cavity is rectangular and the long side of the rectangle is parallel to the atomizing surface. And / or, the projected area of ​​the air inlet of the atomizing chamber is greater than 3.0 mm². 2 .

10. An aerosol generating device, characterized in that, Includes the atomizer described in any one of claims 1-9.

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