Airflow oscillation assembly, atomizer and aerosol generating device

Abstract

An airflow oscillation assembly comprises a shell, a cavity is formed in the shell, an inlet and an outlet which are communicated with the cavity and the outside are formed in the shell, and the center connecting line, facing the outlet, of the inlet is a central axis; the two partition plates are symmetrically arranged in the cavity with the central axis as the axis, and the cavity between the two partition plates is an oscillation chamber; the jet flow attaching bodies are arranged at the end, close to the inlet, of the partition plate, and the two jet flow attaching bodies are symmetrically arranged. The airflow oscillation assembly can increase the effect of promoting air flow and aerosol to form matrix steam mixing.

Description

Technical Field

[0001] The invention relates to the field of atomization, and in particular to an airflow oscillation component, an atomizer and an aerosol generating device. Background Art

[0002] The aerosol generating device usually includes an atomizing device and a power supply device connected to the conductive electrode of the atomizing device. When the user's suction flow exceeds the set value, the atomizer will be activated. At this time, the atomizing device can heat the aerosol-forming matrix stored in the atomizing device to form an aerosol-forming matrix vapor under the electric drive of the power supply device. The aerosol-forming matrix vapor is mixed with the airflow flowing through the atomizing surface and then condensed to form tiny droplets distributed in the air to form an aerosol airflow. After the aerosol airflow is formed, it will reach the mouthpiece through the airway of the atomizing device and be inhaled by the user. In the entire use process, the mixing effect of the airflow and the aerosol-forming matrix vapor largely determines the user's suction experience.

[0003] When the user draws the atomizer, air flows into the atomization chamber through the air duct and mixes with the aerosol-forming matrix vapor in the atomization chamber, and the mixed gas is inhaled by the user. In the currently commonly used atomization device structure, the overall flow direction and flow area are stable when the air flow reaches the atomization chamber, and the contact area between the air flow and the atomization surface is limited, which means that only part of the air flow can directly contact the atomization surface and effectively participate in the air-aerosol formation matrix droplet mixing process. Furthermore, the heating power of most atomizers is constant when working, and the rate at which the aerosol-forming matrix forms vapor is almost unchanged. When the user's suction flow rate increases, the proportion of air flow participating in the mixing process will decrease, which will cause the aerosol distribution to be more uneven. The above two points will cause the user's taste of the aerosol to be poor, affecting the user's experience.

[0004] Therefore, it is necessary to design an airflow oscillation component to enhance the mixing effect of air-aerosol to form matrix droplets. Summary of the invention

[0005] In view of this, the present invention provides an airflow oscillation component and an atomizer having the same, which can increase the contact area between the airflow and the atomization surface, so that more airflow can be mixed with the aerosol-forming matrix vapor generated by the atomization surface.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an airflow oscillation component, characterized in that it includes:

[0007] The shell has a cavity formed inside, an inlet and an outlet connected to the cavity and the outside are provided on the shell, and a central line from the inlet to the outlet is a central axis;

[0008] A partition, wherein the two partitions are symmetrically arranged in the cavity with the central axis as the axis, and the cavity between the two partitions is an oscillation chamber;

[0009] A jet attachment body is arranged at one end of the partition plate close to the inlet, and two jet attachment bodies are symmetrically arranged;

[0010] Among them, a feedback channel is formed between the outer side surface of the jet attachment body and the outer side surface of the partition and the inner wall surface of the cavity. The two feedback channels are symmetrically arranged. The cavity between the inlet and the jet attachment body is the control throat. One end of the feedback channel is connected to the control throat, and the other end of the feedback channel is connected to the outlet. The inner side surface of the jet attachment body is arranged at an angle to the central axis.

[0011] Furthermore, the control throat connects the upstream inlet with the downstream oscillation chamber, the lower ends of the two symmetrically arranged feedback channels are respectively connected to the two sides of the control throat, and the oscillation chamber and the symmetrically arranged feedback channels on both sides are separated by two symmetrical partitions.

[0012] Furthermore, the angle α between the inner side surface of the jet attachment body and the central axis direction is in the range of 20° to 60°.

[0013] Furthermore, the internal geometric dimensions of the airflow oscillation component are specified as follows: ① The width of the inlet L 0 Not less than 1.5mm; ②Control the width of the throat L 1 ≥ 1.0 L 0 ; ③ The width of the airflow oscillation chamber L 2 ≥ 1.5 L 0 , length L along the main airflow direction 3 ≥ 1.5 L 0 ; ④Exit width L 4 =0.5~0.95L 0 ⑤The width of the feedback channel L5≤0.2L 0 , and not less than 0.2mm.

[0014] Furthermore, fixing holes are provided on both sides of the upper end surface of the airflow oscillation component.

[0015] A second aspect of the present invention provides an atomizer, wherein the atomizer is equipped with the above-mentioned airflow oscillation component.

[0016] Furthermore, the atomizer includes a shell, and a mist outlet channel, a liquid storage chamber, an atomization component, an airflow oscillation component and a base arranged inside the shell. A suction nozzle is provided at the top of the shell, and a base is provided at the bottom of the shell. Two conductive nails are also installed on the base, and an air inlet is provided between the two conductive nails.

[0017] Furthermore, the inside of the atomizer is provided with mist outlet channels connected with the suction nozzle in sequence from top to bottom, a liquid storage cavity is circumferentially arranged along the mist outlet channel, and a liquid storage sealing seat is provided between the liquid storage cavity and the base.

[0018] Furthermore, the other end of the mist outlet channel is connected to an atomizer assembly, an upper end cover is provided at the upper end of the atomizer assembly, an atomizer core seal is provided inside the upper end cover, an atomizer core is accommodated on the atomizer core seal, and the atomizer core is fixed in the upper end cover through the atomizer core seal.

[0019] A third aspect of the present invention provides an atomizer generating device, wherein the atomizer generating device is equipped with the atomizer described above.

[0020] The beneficial effects of the present invention are:

[0021] The present invention discloses an airflow oscillation component, which is composed of a shell, an inlet, a control throat, a feedback channel, an oscillation chamber, an outlet, a partition and a jet attachment. The inlet, the control throat, the oscillation chamber and the outlet are arranged in a straight line to form a main airflow channel; the starting point of the feedback channel is located on the side of the main airflow channel close to the outlet, and the end point is connected to the control throat. The airflow oscillation component can realize the periodic sweeping motion of the airflow, and the periodic sweeping frequency increases with the increase of the suction rate. The faster the frequency, the better the mixing effect, and it can match different suction scenes; the airflow oscillation component has a simple structure and is easy to implement, and the geometric structure parameters can be adjusted according to different models of electronic atomization equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions adopted in the embodiments of the present application, the drawings required for describing the embodiments are briefly introduced below.

[0023] Figure 1 This is a front view of the atomizer in the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the middle atomizer turning 90°;

[0025] Figure 3 for Figure 2 The schematic cross-sectional view of the atomizer along the AA direction is shown, and the arrow direction in the figure is the air flow direction;

[0026] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure of the mid-air flow oscillation component;

[0027] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure of the mid-air flow oscillation component cut along the middle.

[0028] Figure 6 for Figure 4 A cross-sectional view of the mid-flow oscillation assembly;

[0029] Figure 7 This is an exploded view of the atomizer;

[0030] Figure 8 It is a schematic diagram of the periodic sweep of the airflow when the airflow oscillation component in the present invention is working;

[0031] Figures 9-11 This is a diagram of the expected effect of the airflow oscillation component.

[0032] In the figure: 100, atomizer; 01, shell; 0101, air flow inlet; 0102, control throat; 0103, feedback channel; 0104, oscillation chamber; 0105, air flow outlet; 0106, partition; 0107, jet attachment; 02, air flow oscillation component; 0201, fixing hole; 03, base; 04, liquid storage seal seat; 05, shell; 06, atomization core seal; 07, atomization core; 08, sealing ring; 09, upper end cover; 10, air inlet; 11, liquid storage chamber; 12, mist outlet channel; 13, nozzle; 14, conductive nail; 20, atomization component. DETAILED DESCRIPTION

[0033] The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0034] refer to Figures 1 to 3 and Figure 7 As shown, the atomizer 100 has a tower-like appearance, including an outer shell 05, and a mist outlet channel 12, a liquid storage chamber 11, an atomizing component 20, an airflow oscillation component 02 and a base 03 arranged inside the outer shell 05. The mist outlet channel 12, the atomizing component 20 and the airflow oscillation component 02 are arranged from top to bottom in the vertical direction, the atomizing component 20 and the airflow oscillation component 02 are accommodated in the base 03, and the liquid storage chamber 11 is arranged circumferentially along the mist outlet channel 12.

[0035] The top of the housing 05 is provided with a nozzle 13, and the bottom of the housing 05 is provided with a base 03. The nozzle 13 is used for the user to contact the mouth when inhaling gas, and the base 03 is used to connect and install with a power supply device (not shown in the figure) for supplying power to the atomizer 100. The atomizer 100 and the power supply device can form an aerosol generating device. Figure 8 As shown, two conductive nails 14 are also installed on the base 03, and the conductive nails 14 are used to transmit the electric energy of the power supply device. The base 03 is also provided with an air inlet 10, and the air outside the atomizer 100 enters the inside of the atomizer 100 through the air inlet 10.

[0036] The atomizer assembly 20 includes an upper end cover 09, an atomizer core seal 06 and an atomizer core 07, wherein the atomizer core 07 is installed in the upper end cover 09 through the atomizer core seal 06. A liquid storage seal seat 04 is provided between the upper end of the upper end cover 09 and the upper end of the base 03 and the liquid storage cavity 11, wherein the liquid storage cavity 11 stores an aerosol-forming matrix, and the liquid storage seal seat 04 can prevent the aerosol-forming matrix in the liquid storage cavity 11 from leaking.

[0037] refer to Figures 3 to 7 As shown, the upper end surface of the airflow oscillation component 02 is provided with fixing holes 0201 on both sides, and the fixing holes 0201 can allow the conductive nails 14 to pass through. The airflow oscillation component 02 includes a housing 01, an inlet 0101, a control throat 0102, a feedback channel 0103, an oscillation chamber 0104, an outlet 0105, a partition 0106 and a jet attachment 0107, wherein the width L of the outlet 0105 is 4 Smaller than the width L of the entrance 0101 0 The control throat 0102 connects the upstream inlet 0101 and the downstream oscillation chamber 0104. The feedback channels 0103 are symmetrically arranged on both sides of the oscillation chamber 0104. The starting point of the feedback channel 0103 is close to the air outlet 0105, and the end point connects the two sides of the control throat 0102. The oscillation chamber 0104 and the feedback channels 0103 symmetrically arranged on both sides are separated by two symmetrical partitions 0106. Figure 5 and Figure 6 As shown, the center line from the inlet 0101 toward the outlet 0105 is the central axis, and two jet attachments 0107 are symmetrically arranged on one end of the partition 0106 close to the inlet 0101. Specifically, the jet attachment 0107 is an annular pointed protrusion extending from the partition 0106. The jet attachment 0107 can form an airflow channel with a small inlet and a large outlet in the oscillation chamber 0104, and the angle α between the inner side surface of the jet attachment 0107 and the direction of the central axis is in the range of 20° to 60°.

[0038] refer to Figure 3 As shown, the upper end of the mist outlet channel 12 is connected to the suction nozzle 13, and the lower end is connected to the heating surface of the atomizer core 07 of the atomizer assembly 20. The atomizer core 07 can be heated after being powered on, so that the aerosol-forming matrix is ​​evaporated. The upper end of the airflow oscillation component 02 is provided with an outlet 0105, and the lower end is provided with an inlet 0101. The outlet 0105 leads to the heating surface of the atomizer core 07, and the inlet 0101 is connected to the air inlet 10. In order to enhance the air tightness of the atomizer 100, a sealing ring 08 is installed on the contact surface between the base 03 and the shell 05, and the material of the sealing ring 08 is preferably silicone.

[0039] In some embodiments, to achieve the desired airflow periodic sweeping motion, reference Figure 6 As shown, the internal geometric dimensions of the airflow oscillation component are specified as follows: ① The width L of the inlet 0101 0 Determined by the internal air flow channel size of the atomizer 100, but not less than 1.5 mm; ② Control the width L of the throat 0102 1 ≥ 1.0 L 0 ; ③ The width L of the airflow oscillation chamber 0104 2 ≥ 1.5 L 0, length L along the main airflow direction 3 ≥ 1.5 L 0 ; ④ Width L of exit 0105 4 =0.5~0.95L 0 ; ⑤ The width L of the feedback channel 0103 5 ≤0.2L 0 , and not less than 0.2mm.

[0040] In the airflow oscillation component 02, the inlet 0101, the control throat 0102, the oscillation chamber 0104 and the outlet 0105 sequentially form the main airflow channel. The jet attachment 0107 forms a fixed angle with the direction of the main airflow channel to induce the deflection of the main airflow. The airflow that flows from the outlet 0105 into the feedback channel 0103 and finally returns to the control throat 0102 is the control airflow, which is used to periodically adjust the mainstream direction of the air.

[0041] The flow path of the air flow in the air flow oscillation component 02 is as follows: Figure 3 As shown, when the user draws air, the airflow enters the atomizer 100 through the air inlet 10 and flows through the airflow oscillation component 02. In the airflow oscillation component 02, due to the width L of the outlet 0105 4 Smaller than the width L of the entrance 0101 0 , part of the air flow (control air flow) flows back from the outlet 0105 through the feedback channels 0103 on both sides to the control throat 0102 at the inlet 0101 to periodically change the direction of the main air flow. After the main air flow flows out from the outlet 0105, it collides with the surface of the atomizer core 07 and mixes with the aerosol-forming matrix vapor in the process to form an aerosol. After that, the aerosol airflow enters the mist outlet channel 12 through the reserved air channel inside the upper end cover 09, and is finally inhaled by the user through the suction nozzle 13.

[0042] refer to Figure 7 As shown, during assembly, first install the conductive nail 14 on the base 03, then use the fixing holes 0201 on both sides of the airflow oscillation component 02 to position it, and insert the airflow oscillation component 02 into the two conductive nails 14 to fix it. These three components form the first group. Install the atomizer core seal 06 into the upper end cover 09, and then put the atomizer core 07 into the installation position reserved by the atomizer core seal 06. These three components form the second group. When installing, the two groups of components are positioned and installed through the reserved buckles of the base 03 and the upper end cover 09.

[0043] Figure 8 FIG. 1 is a schematic diagram of the periodic sweep of the airflow when the airflow oscillation component 02 in the present invention is working. The arrow direction in the figure is the airflow direction. Figures 9 to 11 The effect diagram of the expected realization of the airflow oscillation component 02. The internal flow self-excitation deflection process of the flow oscillator 02 provided by the present invention is as follows Figure 8As shown, there is a feedback channel 0103 on each side of the interior, and the airflow flows in an upward direction at the airflow inlet 0101. Due to the Coanda effect, when the main airflow enters the oscillation chamber 0104 from the control throat 0102, it will flow along the jet attached wall 0107 on one side. Due to the flow limiting effect of the airflow outlet 0105, part of the airflow (control airflow) enters the feedback channel 0104 on this side and flows back to the control throat 0102, filling the space of the oscillation chamber 0104 close to this side, pushing the main airflow to the jet attached wall 0107 on the other side, and repeating the cycle, thereby forming a periodic sweeping oscillating airflow at the airflow outlet 0105. The periodic sweeping motion of the main air flow at the outlet 0105 is equivalent to increasing the contact area between the air flow and the atomizing surface, so that more air flow can be mixed with the aerosol-forming matrix vapor generated by the atomizing surface; furthermore, the main air flow will continuously form large and small vortices when sweeping up and down, and the vortices have a stronger entrainment ability for steam, which can further promote the mixing effect of the air flow and the aerosol-forming matrix vapor. In addition, the sweeping frequency of the air flow at the outlet of the oscillator increases with the increase of the air flow speed. According to the aforementioned theory, a higher sweeping frequency can bring a better mixing effect, which can well avoid the problem of aerosol (a mixture of air and aerosol-forming matrix vapor) concentration decrease and uneven taste in the prior art as the suction flow increases.

[0044] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the scope of the present invention through the above description. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An airflow oscillation component, characterized in that: include: A shell (01) has a cavity formed inside, and an inlet (0101) and an outlet (0105) are provided on the shell (01) for connecting the cavity with the outside, and a central line from the inlet (0101) to the outlet (0105) is a central axis; A partition (0106), wherein two partitions (0106) are symmetrically arranged in the cavity with the central axis as the axis, and the cavity between the two partitions (0106) is an oscillation chamber (0104); A jet attachment body (0107) is arranged on one end of the partition plate (0106) close to the inlet (0101), and two jet attachment bodies (0107) are symmetrically arranged; A feedback channel (0103) is formed between the outer side surface of the jet attachment body (0107) and the outer side surface of the partition (0106) and the inner wall surface of the cavity, and the two feedback channels (0103) are symmetrically arranged. The cavity between the inlet (0101) and the jet attachment body (0107) is a control throat (0102), one end of the feedback channel (0103) is connected to the control throat (0102), and the other end of the feedback channel (0103) is connected to the outlet (0105), and the inner side surface of the jet attachment body (0107) is arranged at an angle to the central axis.

2. The airflow oscillating assembly according to claim 1, characterized in that: The control throat (0102) connects the upstream inlet (0101) with the downstream oscillation chamber (0104), and the lower ends of the two symmetrically arranged feedback channels (0103) are respectively connected to the two sides of the control throat (0102), and the oscillation chamber (0104) and the symmetrically arranged feedback channels (0103) on both sides are separated by two symmetrically arranged partitions (0106).

3. The airflow oscillating assembly according to claim 2, characterized in that: The angle α between the inner side surface of the jet attachment (0107) and the central axis is in the range of 20° to 60°.

4. The airflow oscillating assembly according to claim 3, characterized in that: The internal geometric dimensions of the airflow oscillation component (02) are specified as follows: ① the width L0 of the inlet (0101) is not less than 1.5 mm; ② the width L1 of the control throat (0102) is ≥1.0L0; ③ the width L2 of the airflow oscillation chamber (0104) is ≥1.5L0, and the length L3 along the main airflow direction is ≥1.5L0; ④ the width L4 of the outlet (0105) is 0.5~0.95L0; ⑤ the width L5 of the feedback channel (0103) is ≤0.2L0, and is not less than 0.2 mm.

5. The airflow oscillating assembly according to claim 1, characterized in that: Fixing holes (0201) are provided on both sides of the upper end surface of the airflow oscillation component (02).

6. An atomizer, characterized in that: The atomizer comprises the airflow oscillation assembly according to any one of claims 1 to 5.

7. The atomizer according to claim 6, characterized in that: The atomizer (100) comprises a shell (05), a mist outlet channel (12) arranged inside the shell (05), a liquid storage chamber (01), an atomization component (20), an air flow oscillation component (02) and a base (03), wherein a suction nozzle (13) is arranged at the top end of the shell (05), and the base (03) is arranged at the bottom end of the shell (05), and two conductive nails (14) are also arranged on the base (03), and an air inlet (10) is arranged between the two conductive nails (14).

8. The atomizer according to claim 7, characterized in that: The atomizer (100) is provided with the mist outlet channel (12) connected to the suction nozzle (13) in sequence from top to bottom, a liquid storage cavity (11) is arranged circumferentially along the mist outlet channel (12), and a liquid storage sealing seat (04) is provided between the liquid storage cavity (11) and the base (03).

9. The atomizer according to claim 8, characterized in that: The other end of the mist outlet channel (12) is connected to the atomizer assembly (20), and an upper end cover (09) is provided at the upper end of the atomizer assembly (20). An atomizer core seal (06) is provided inside the upper end cover (09), and an atomizer core seal (06) accommodates an atomizer core (07), and the atomizer core (07) is fixed in the upper end cover (09) through the atomizer core seal (06).

10. An aerosol generating device, characterized in that: The aerosol generating device comprises the atomizer according to any one of claims 6 to 9.

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