WO2023207292A1 - Electronic atomization device and liquid storage atomization assembly thereof - Google Patents

Abstract

The present invention relates to an electronic atomization device and a liquid storage atomization assembly thereof. An airflow channel used for the flow of high-speed airflow and at least two liquid inlet channels communicating with the airflow channel are formed in the liquid storage atomization assembly. A liquid matrix entering the airflow channel from the at least two liquid inlet channels is atomized under the action of the high-speed airflow flowing in the airflow channel. In the present invention, the continuously flowing liquid matrix is atomized into liquid particles by means of an auxiliary airflow nozzle. Since the surface area of the liquid particles is expanded, heating evaporation is much easier, thereby achieving low-temperature atomization. In addition, supplying liquid to the airflow channel by means of the at least two liquid inlet channels may reduce an impact caused by flow pulsation, making an instantaneous flow rate more stable.

Description

Electronic atomization device and its liquid storage atomization component Technical field

The present invention relates to the field of atomization, and more specifically, to an electronic atomization device and a liquid storage atomization assembly thereof.

Background technique

Existing electronic atomization devices mainly use porous media such as porous ceramics or porous cotton combined with heating components for heating and atomization. Due to the high heating temperature during atomization, when the supply of liquid matrix is insufficient, the small amount of liquid matrix on the heating component is not enough to consume the electrical energy released on the heating component, causing the temperature of the heating surface to further increase, thereby further aggravating the thermal cracking of the liquid matrix. , and even the formation of carbon deposits and dry burning can easily cause the formed aerosol to produce a burnt smell, leading to a significant deterioration in taste. In addition, the liquid matrix is prone to flow pulsation during the liquid supply flow process, which affects the stability of the liquid supply flow.

Contents of the invention

The technical problem to be solved by the present invention is to provide an improved liquid storage atomization assembly and an electronic atomization device having the liquid storage atomization assembly in view of the above-mentioned defects of the prior art.

The technical solution adopted by the present invention to solve the technical problem is to construct a liquid storage atomization assembly, and an air flow channel for circulating high-speed air flow and at least two air flow channels connected with the air flow channel are formed in the liquid storage atomization assembly. The at least two liquid inlet channels are arranged in rotational symmetry with respect to the central axis of the air flow channel. The liquid substrate entering the air flow channel from the at least two liquid inlet channels is controlled by the air flow channel. Atomized by the circulating high-speed airflow.

In some embodiments, each liquid inlet channel is tangent to the cavity wall of the gas flow channel.

In some embodiments, the cross-sectional area of each liquid inlet channel is less than or equal to 0.126mm².

In some embodiments, the extending direction of each liquid inlet channel is perpendicular to the extending direction of the air flow channel.

In some embodiments, the airflow channel includes an atomization chamber and an air supply channel, the atomization chamber is connected to the air supply channel and the at least two liquid inlet channels respectively, and the atomization chamber is close to the One end of the air supply channel is formed with an atomization surface, and the atomization surface is provided with an atomization port that connects the air supply channel and the atomization chamber. The liquid substrate flowing into the atomization chamber can be in the atomization chamber. A liquid film is formed on the surface, and the liquid film is cut by the high-speed airflow to form liquid particles.

In some embodiments, a liquid inlet is formed at one end of each liquid inlet channel close to the atomization chamber, and the vertical distance between the center line of the liquid inlet and the atomization surface is 0.3 mm~ 0.8mm.

In some embodiments, the outer diameter of the atomization surface is 0.4~0.7mm.

In some embodiments, the aperture of the atomization port is 0.22mm~0.35mm.

In some embodiments, the central axis of the atomization port coincides with the central axis of the atomization surface.

In some embodiments, the wall surface of the atomization chamber is perpendicular to the atomization surface.

In some embodiments, the axis of at least one of the liquid inlet channels does not intersect with the central axis of the atomization chamber, so that the liquid substrate has a circumferential velocity after entering the atomization chamber.

In some embodiments, the air supply channel includes a constriction channel, and the cross-sectional area of the constriction channel gradually decreases from an end far away from the atomization chamber to an end close to the atomization chamber.

In some embodiments, the air flow channel further includes an expansion channel, the expansion channel is connected to an end of the atomization chamber away from the air supply channel, and the cross-sectional area of the expansion channel is determined by the end of the atomization chamber close to the atomization chamber. It gradually increases from one end to the end far away from the atomization chamber.

In some embodiments, the at least two liquid inlet channels are arranged rotationally symmetrically with respect to the central axis of the air flow channel.

In some embodiments, a liquid storage chamber and a main channel connecting the liquid storage chamber and the at least two liquid inlet channels are also formed in the liquid storage atomization assembly.

In some embodiments, the liquid storage chamber is annular and surrounds the air flow channel.

In some embodiments, at least two main channels are formed in the liquid storage atomization component, and the at least two main channels are respectively connected with the at least two liquid inlet channels in a one-to-one correspondence.

In some embodiments, the at least two main channels are arranged in rotational symmetry with respect to the central axis of the airflow channel.

In some embodiments, each main channel is a linear channel.

In some embodiments, the main channel includes a first channel and a second channel, and both ends of the first channel are connected to the liquid storage chamber and the second channel respectively; the second channel is annular. channel, the at least two liquid inlet channels are connected with the second channel.

In some embodiments, the second channel is coaxially disposed with the airflow channel.

The present invention also provides an electronic atomization device, including the liquid storage atomization assembly as described in any one of the above.

Implementing the present invention has at least the following beneficial effects: the present invention uses an airflow auxiliary nozzle to atomize the continuously flowing liquid matrix into liquid particles. Since the surface area of the liquid particles is expanded, it is easier to heat and evaporate, and low-temperature atomization can be achieved; in addition, by At least two liquid inlet channels supply liquid to the air flow channel, which can reduce the impact of flow pulsation and make the instantaneous flow rate more stable.

Description of the drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples. In the accompanying drawings:

Figure 1 is a schematic three-dimensional structural diagram of the electronic atomization device in the first embodiment of the present invention;

Figure 2 is a schematic longitudinal cross-sectional structural diagram of the electronic atomization device shown in Figure 1;

Figure 3 is a schematic structural diagram of a longitudinal section of the liquid storage atomization assembly in Figure 2;

Figure 4 is a schematic structural diagram of the longitudinal section of the nozzle in Figure 3;

Figure 5 is a schematic longitudinal cross-sectional structural diagram of the liquid storage atomization assembly in the second embodiment of the present invention;

Figure 6 is a schematic longitudinal cross-sectional structural view of the liquid storage atomization assembly in the third embodiment of the present invention;

Figure 7 is a schematic cross-sectional structural diagram of the liquid storage atomization assembly shown in Figure 6.

Implementation

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described here. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate an orientation or position. The relationship is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the present invention is customarily placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the device or component referred to. Must have a specific orientation, be constructed and operate in a specific orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. Furthermore, a first feature being "above" a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or it may simply mean that the first feature is less horizontally than the second feature.

Figures 1-2 show an electronic atomization device 100 in a first embodiment of the present invention. The electronic atomization device 100 can be used to atomize a liquid substrate to generate an aerosol, which can be smoked or inhaled by the user. In this embodiment, it can be roughly cylindrical. It is understandable that in other embodiments, the electronic atomization device 100 may also be in other shapes such as an elliptical column, a flat column, a square column, or the like. The liquid substrate may include e-liquid or medicinal liquid.

The electronic atomization device 100 may include a housing 10 and a control module 20 , a power supply 30 , an air source 40 and a liquid storage atomization assembly 60 housed in the housing 10 . The air source 40 is used to provide high-speed air flow, which can usually be an air pump. The control module 20 is electrically connected to the air source 40 for receiving instructions. The instructions can be triggered by the user or automatically triggered after the electronic atomization device 100 meets certain conditions. The control module 20 then controls the operation of the air source 40 according to the instructions. The power supply 30 is electrically connected to the control module 20 and the air source 40 respectively, and is used to provide electric energy to the control module 20 and the air source 40 .

The liquid storage atomization assembly 60 is formed with a liquid storage chamber 61 for storing a liquid substrate, an air flow channel 63 for circulating high-speed air flow, and a liquid supply channel 62 connecting the liquid storage chamber 61 and the air flow channel 63 . The liquid substrate that enters the air flow channel 63 from the liquid supply channel 62 can be atomized by the high-speed air flow circulating in the air flow channel 63 to form fine liquid particles.

As shown in Figures 3-4, the air flow channel 63 may include an air supply channel 631 and an atomization chamber 632. The atomization chamber 632 is connected with the air source 40 through the air supply channel 631 and is connected with the liquid storage chamber 61 through the liquid supply channel 62 . An end surface of the atomization chamber 632 close to the air supply channel 631 forms an atomization surface 6321, and an atomization port 6320 is also formed on the atomization surface 6321. The high-speed airflow from the air supply channel 631 is sprayed into the atomization chamber 632 through the atomization port 6320 and flows at high speed in the atomization chamber 632. The high-speed airflow is generated in the atomization chamber 632 and the liquid supply channel 62 by Bernoulli's equation. Negative pressure is transmitted to the liquid storage chamber 61 to suck the liquid matrix in the liquid storage chamber 61 to the atomization chamber 632, forming a liquid film on the atomization surface 6321. As the liquid supply process continues, the liquid film moves to the edge of the hole wall of the atomization port 6320 and meets the high-speed airflow, and is cut and atomized by the high-speed airflow into fine liquid particles. The liquid particles are then taken away from the atomization port 6320 by the airflow. Then it is sprayed out with the airflow to complete the atomization process. The liquid matrix is atomized in the atomization chamber 632 in a non-phase change atomization mode. The particle size distribution of the liquid particles formed after atomization in the atomization chamber 632 can reach the range of SMD=30 μm. Among them, SMD = total volume of liquid particles/total surface area of liquid particles, which represents the average particle size of liquid particles.

The atomization chamber 632 is a straight cylindrical channel, and its hole wall surface is perpendicular to the atomization surface 6321. In this embodiment, the atomization chamber 632 is a right cylindrical channel, the atomization surface 6321 is in the shape of concentric rings, and the inner wall surface of the atomization surface 6321 defines the atomization port 6320. In other embodiments, the cross-section of the atomization chamber 632, the atomization surface 6321, or the atomization port 6320 may also be an ellipse, a rectangle, or other non-circular shapes.

Parameters such as the size and shape of the atomization port 6320 and the atomization chamber 632 can affect the negative pressure in the atomization chamber 632 and the particle size of the generated liquid particles, and can make the flow rate more stable. In some embodiments, the aperture of the atomization port 6320, the aperture of the atomization chamber 632, and the length of the atomization chamber 632 can be set to appropriate sizes as needed.

Specifically, the aperture of the atomization port 6320 is related to the airflow velocity (m/s) coming out of the atomization port 6320, which can affect the particle size of the generated liquid particles. In some embodiments, the aperture range of the atomization port 6320 may be 0.2mm~0.4mm, preferably 0.22mm~0.35mm.

The aperture of the atomization chamber 632 will affect the air flow rate in the atomization chamber 632, thereby affecting the negative pressure in the atomization chamber 632 and the liquid supply channel 62. The negative pressure can cause the liquid substrate to be sucked from the liquid supply channel 62 to the atomization chamber 632 . In some embodiments, the aperture of the atomization chamber 632 may range from 0.7 mm to 1.3 mm. The axial length of the atomization chamber 632 may be 0.8mm~3.0mm. It can be understood that in other embodiments, the atomization port 6320 or the atomization chamber 632 may also have a non-circular cross-section; when the atomization port 6320 or the atomization chamber 632 has a non-circular cross-section, the aperture of the atomization port 6320 Or the aperture of the atomization chamber 632 is its equivalent diameter respectively. The term "equivalent diameter" means that the diameter of a circular hole with the same hydraulic radius is defined as the equivalent diameter of a non-circular hole.

Further, in some embodiments, the aperture range of the atomization port 6320 is 0.22mm~0.35mm, the axial length range of the atomization chamber 632 is 1.5mm~3.0mm, and the aperture range of the atomization chamber 632 is 0.7mm~ 1.3mm, this value range can give the liquid storage atomization assembly 60 advantages in the manufacturing process.

One end of the liquid supply channel 62 connected to the atomization chamber 632 has a liquid inlet 620. The vertical distance between the center of the liquid inlet 620 and the atomization surface 6321 is the key to ensuring the formation of a liquid film. In some embodiments, the vertical distance between the liquid inlet 620 and the atomization surface 6321 may range from 0.3mm to 0.8mm, preferably from 0.35mm to 0.6mm.

Further, the air flow channel 63 also includes an expansion channel 633, which is connected to an end of the atomization chamber 632 away from the air supply channel 631, and is used to diffuse the liquid particles generated after atomization in the atomization chamber 632 in the form of a jet. Spray out to increase the spray area of liquid particles. The cross-sectional area of the expansion channel 633 gradually increases from the end close to the atomization chamber 632 to the end far away from the atomization chamber 632 . Specifically, in this embodiment, the expansion channel 633 is a conical channel that extends longitudinally and has a hole diameter that gradually increases from bottom to top. The atomization angle of the expansion channel 633 (that is, the expansion angle of the expansion channel 633) must have a suitable range to ensure that the ejected liquid particles have a suitable spray range. In some embodiments, the atomization angle of the expansion channel 633 may be 30 ⁰ ~70 ⁰ . Furthermore, the expansion channel 633 and the atomization chamber 632 can also be connected smoothly in a streamlined manner, for example, through rounding. In other embodiments, the expansion channel 633 may also be in an elliptical cone shape, a pyramid shape, or other shapes.

In some embodiments, the air supply channel 631 may include a constriction channel 6311. The constriction channel 6311 has a constriction shape, and its cross-sectional area gradually decreases from an end far away from the atomization chamber 632 to an end close to the atomization chamber 632, thereby enabling the air supply channel 631 to be compressed. The air flow from the air source 40 is accelerated and then sprayed to the atomization chamber 632 . In this embodiment, the contraction channel 6311 is a conical channel extending longitudinally and with the aperture gradually decreasing from bottom to top. The aperture of the upper end of the contraction channel 6311 is smaller than the aperture of the atomization chamber 632, so that the contraction channel 6311 and the atomization chamber 632 The junction forms a circular atomization surface 6321. It can be understood that in other embodiments, the contraction channel 6311 can also be an elliptical cone shape or a pyramid shape or other contraction shapes.

Further, the air supply channel 631 also includes a communication channel 6312 that communicates with the contraction channel 6311. The contraction channel 6311 is connected to the air source 40 through the communication channel 6312. The communication channel 6312 may be a straight cylindrical channel extending longitudinally. The upper end of the communication channel 6312 is connected with the contraction channel 6311. The aperture of the communication channel 6312 is consistent with the aperture of the lower end of the contraction channel 6311. In other embodiments, the cross-section of the communication channel 6312 may also be an ellipse, a rectangle, or other non-circular shapes. It can be understood that in other embodiments, the air supply channel 631 formed in the liquid storage atomization assembly 60 may also only include a contraction channel 6311; or, when the air flow rate is sufficient, the air supply channel 631 may also only include a communication channel 6312. .

The liquid supply channel 62 can be used to control the flow rate of liquid supplied from the liquid storage chamber 61 to the atomization chamber 632, to achieve a quantitative supply of liquid to the atomization cavity 632, and to ensure that the flow rate of liquid supply to the atomization chamber 632 reaches the design value. Generally, the size of the liquid supply channel 62 can be designed according to the flow demand, that is, the liquid supply channel 62 can generate resistance that matches the liquid supply power under the designed flow rate. Specifically, the negative pressure generated in the atomization chamber 632 is the liquid supply power, and the liquid supply resistance includes the resistance along the liquid supply channel 62 and the negative pressure in the liquid storage chamber 61 . By calculating the resistance required along the liquid supply channel 62 under the design flow rate, the specific diameter and length of the liquid supply channel 62 are designed.

Generally speaking, the greater the viscosity of the liquid matrix, the greater the resistance of the liquid matrix when flowing in the liquid supply channel 62; the longer the extension path of the liquid supply channel 62, the greater the resistance in the liquid supply channel 62; The larger the cross-sectional area of the channel 62 is, the smaller the resistance in the liquid supply channel 62 is; the more tortuous the liquid supply channel 62 is, the greater the resistance in the liquid supply channel 62 is.

Further, the liquid supply channel 62 may include a main channel 621 and a liquid inlet channel 622. The main channel 621 is connected with the liquid storage chamber 61 , and the liquid inlet channel 622 is connected with the main channel 621 and the atomization chamber 632 . In this embodiment, the main channel 621 and the liquid inlet channel 622 are linear channels extending laterally, and the central axes of the main channel 621 and the liquid inlet channel 622 coincide with each other. Further, the main channel 621 may be a weak capillary channel, and the liquid inlet channel 622 may be a capillary channel. By designing the liquid inlet channel 622 as a capillary channel, when the air source 40 stops working and the negative pressure generated by the high-speed air flow in the liquid supply channel 62 disappears, the capillary force in the liquid inlet channel 622 can be used to reduce or avoid the inlet. The backflow of the liquid matrix in the liquid channel 622 to the liquid storage chamber 61 prevents the liquid supply delay in the next suction caused by the backflow of the liquid matrix in the liquid inlet channel 622 .

Furthermore, the liquid storage atomization assembly 60 may also be formed with a liquid injection channel 67 so that after the liquid matrix in the liquid storage cavity 61 is used up, liquid can be injected into the liquid storage cavity 61 again through the liquid injection channel 67 . In this embodiment, the liquid storage chamber 61 is annular and surrounds the periphery of the air flow channel 63 , and can be disposed coaxially with the air flow channel 63 ; the liquid injection channel 67 can extend longitudinally upward from the upper end of the liquid storage cavity 61 .

In some embodiments, the liquid storage atomization assembly 60 may include a liquid storage body 64, a liquid storage seat 65 fitted at the bottom of the liquid storage body 64, and a nozzle 66 longitudinally extending through the liquid storage seat 65 and the liquid storage body 64. . The liquid storage chamber 61 , the main channel 621 and the liquid injection channel 67 are formed in the liquid storage body 64 , and the liquid inlet channel 622 and the air flow channel 63 are formed in the nozzle 66 . The liquid storage chamber 61 may be annular and may be formed by a concave bottom surface of the liquid storage body 64 . The main channel 621 may be formed by a side wall of the liquid storage chamber 61 close to the nozzle 66 extending laterally toward the nozzle 66 . The liquid storage seat 65 is fitted at the bottom of the liquid storage body 64 to cover the liquid storage chamber 61 .

As shown in FIG. 2 , the electronic atomization device 100 may also include a heating element 80 contained in the housing 10 . The heating element 80 is electrically connected to the power supply 30 and can generate heat after being powered on. The structure and heating form of the heating element 80 are not limited. For example, it can be a heating net, a heating sheet, a heating wire or a heating film. The heating form can be resistance conduction heating, infrared radiation heating, electromagnetic induction heating or composite heating. Heated form. An output channel 70 is also formed in the housing 10 , and the heating element 80 can be disposed in the output channel 70 and located above the nozzle 66 . The liquid particles ejected from the nozzle 66 hit the heating element 80 upward, and are evaporated and heated by the heating element 80 to generate an aerosol. The aerosol is then carried out of the output channel 70 by the air flow for the user to suck or inhale.

In this embodiment, the nozzle 66 is used to atomize the continuously flowing liquid matrix into liquid particles and then evaporated by the heating element 80. Since the surface area of the fine liquid particles formed after atomization by the nozzle 66 is greatly expanded, it is easier to Heating and evaporation can, on the one hand, improve the conversion efficiency of heat and aerosol, and on the other hand, reduce the temperature of the evaporation process of the heating element 80 to achieve low-temperature atomization. At a lower heating atomization temperature, the liquid matrix mainly completes the physical change process, thus overcoming the problem of thermal cracking and deterioration of the liquid matrix caused by the necessity of high-temperature atomization under traditional porous ceramics or porous cotton conditions, not to mention the Burning, carbon deposition, heavy metal volatilization and other phenomena will occur, so that the unique ingredients and flavor and fragrance systems of different liquid bases can be maintained, and ultimately the inhaler can feel the unique taste corresponding to the original liquid base. In addition, the heating element 80 is not in contact with the liquid storage chamber 61, and the heating element 80 does not need to be immersed in the liquid matrix for a long time, which reduces the contamination of the liquid matrix by the heating element 80, thereby reducing impurity gases in the aerosol generated after atomization.

It can be understood that in other embodiments, the liquid particles ejected from the nozzle 66 can also hit the heating element 80 downward, that is, the heating element 80 can also be disposed below the nozzle 66; or, the liquid ejected from the nozzle 66 can The particles may also impact the heating element 80 laterally, that is, the heating element 80 and the nozzle 66 are at or approximately at the same level. In other embodiments, the electronic atomization device 100 may not be provided with the heating element 80 , that is, the liquid particles atomized by the nozzle 66 may be directly output through the output channel 70 and sucked or inhaled by the user.

Further, the electronic atomization device 100 may further include an airflow sensing element 50 disposed in the housing 10 and electrically connected to the control module 20 . The airflow sensing element 50 can sense changes in the airflow when the user inhales, and can usually be a negative pressure sensor, such as a microphone. The user's suction action creates negative pressure, and the airflow sensing element 50 senses the negative pressure to generate a suction signal. The suction signal can be transmitted to the control module 20 to control the operation of the air source 40 and/or the heating element 80 .

Furthermore, the electronic atomization device 100 may further include a dust cover 90 detachably disposed on the upper end of the housing 10 . When the electronic atomization device 100 is not needed, the dust cover 90 can be placed on the upper end of the housing 10 to prevent dust and other impurities from entering the output channel 70 .

Figure 5 shows the liquid storage atomization assembly 60 in the second embodiment of the present invention. The main difference from the above-mentioned first embodiment is that in this embodiment, there are two main channels 621 and two liquid inlet channels 622 respectively. . Each liquid inlet channel 622 is a linear channel, and the two liquid inlet channels 622 are arranged symmetrically with respect to the central axis of the atomization chamber 632 . Supplying liquid to the atomization chamber 632 through two symmetrically arranged liquid inlet channels 622 can reduce the impact of flow pulsation and make the instantaneous flow rate more stable. Each main channel 621 is a linear channel, and the two main channels 621 are connected to the two liquid inlet channels 622 respectively. The two main channels 621 can also be arranged symmetrically with respect to the central axis of the atomization chamber 632. It can be understood that in other embodiments, the main channel 621 may also be a non-linear channel.

In some embodiments, the diameter of each liquid inlet channel 622 may be less than or equal to 0.4 mm, or the cross-sectional area of each liquid inlet channel 622 may be less than or equal to 0.126 mm². Each liquid inlet channel 622 is connected to the atomization chamber 632 through a liquid inlet 620. The vertical distance between the center line of the liquid inlet 620 and the atomization surface 6321 may range from 0.3 mm to 0.8 mm.

It can be understood that in other embodiments, the number of main channels 621 and liquid inlet channels 622 can also be more than two, and the two or more liquid inlet channels 622 are arranged in rotational symmetry with respect to the central axis of the atomization chamber 632. The two or more main channels 621 are respectively connected with the two or more liquid inlet channels 622 in a one-to-one correspondence.

In addition, in this embodiment, the aperture of the atomization chamber 632 can also be reduced, thereby reducing the area of the atomization surface 6321, so that the liquid matrix participating in the gas-liquid cutting at the atomization port 6320 is more concentrated, and the negative pressure liquid supply The process of gas-liquid shearing is more continuous, thereby achieving the effect of reducing pulsation. In some embodiments, the aperture of the atomization chamber 632 and the outer diameter of the atomization surface 6321 may be 0.4~0.7 mm. It can be understood that this method of reducing pulsation by reducing the area of the atomization surface 6321 is also applicable to the situation where a single liquid inlet channel 622 supplies liquid.

Figures 6-7 show the liquid storage atomization assembly 60 in the third embodiment of the present invention. The main difference from the above-mentioned first embodiment is that in this embodiment, the liquid inlet channel used to communicate with the atomization chamber 632 There are two liquid inlet channels 622, and the two liquid inlet channels 622 are arranged rotationally symmetrically with respect to the central axis of the atomization chamber 632. Supplying liquid to the atomization chamber 632 through two symmetrically arranged liquid inlet channels 622 can reduce the impact of flow pulsation and make the instantaneous flow rate more stable. It can be understood that in other embodiments, the number of liquid inlet channels 622 is not limited to two, and may also be more than two.

In some embodiments, the axis of at least one liquid inlet channel 622 does not intersect with the central axis of the atomization chamber 632, that is, the outlet direction of the at least one liquid inlet channel 622 is not facing the central axis of the atomization chamber 632, so that the liquid matrix After entering the atomization chamber 632, it has a circumferential speed. Furthermore, in this embodiment, each liquid inlet channel 622 is tangential to the cavity wall of the atomization chamber 632. The tangential design can enable the incoming liquid substrate to obtain tangential velocity, increase the velocity difference between the air and liquid, and thereby improve It is conducive to atomization and improves the atomization effect.

In some embodiments, the diameter of each liquid inlet channel 622 may be less than or equal to 0.4 mm, or the cross-sectional area of each liquid inlet channel 622 may be less than or equal to 0.126 mm². Each liquid inlet channel 622 is connected to the atomization chamber 632 through a liquid inlet 620. The vertical distance between the center line of the liquid inlet 620 and the atomization surface 6321 may range from 0.3 mm to 0.8 mm.

The main channel 621 used to connect the liquid storage chamber 61 and the two liquid inlet channels 622 may include a first channel 6211 and a second channel 6212. The first channel 6211 may be a linear channel extending laterally, and both ends of the first channel 6211 are connected to the liquid storage chamber 61 and the second channel 6212 respectively. The second channel 6212 is an annular channel. Specifically, in this embodiment, the second channel 6212 is annular and surrounds the atomization chamber 632, and is coaxially arranged with the atomization chamber 632. Each liquid inlet channel 622 is a linear channel, one end of which is connected to the second channel 6212, and the other end is connected to the atomization chamber 632. It can be understood that in other embodiments, the first channel 6211 may also be a non-linear channel, and the number of the first channel 6211 may also be two or more.

In addition, similar to the above second embodiment, in this embodiment, the aperture of the atomization chamber 632 can also be reduced, thereby reducing the area of the atomization surface 6321, so that the liquid matrix at the atomization port 6320 can participate in the gas-liquid cutting. It is more concentrated and makes the process from negative pressure liquid supply to gas-liquid shearing more continuous, thus achieving the effect of reducing pulsation.

The difference between this embodiment and the above-mentioned first and second embodiments is that the liquid storage atomization assembly 60 in this embodiment includes a liquid storage body 64 , a liquid storage seat 65 and a sealing plug 68 . The liquid storage chamber 61 and the liquid injection channel 67 are formed in the liquid storage body 64 , and the main channel 621 , the liquid inlet channel 622 and the air flow channel 63 are formed in the liquid storage seat 65 . The liquid storage seat 65 is embedded in the bottom of the liquid storage body 64 to cover the liquid storage chamber 61 . The sealing plug 68 detachably blocks the liquid injection channel 67 to open the liquid injection channel 67 when liquid is injected, and blocks the liquid injection channel 67 after the liquid injection is completed.

It can be understood that the above technical features can be used in any combination without limitation.

The above embodiments only express the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention; it should be noted that for those of ordinary skill in the art, Without departing from the concept of the present invention, the above technical features can be freely combined, and several modifications and improvements can be made, which all belong to the protection scope of the present invention; therefore, any equivalent transformations made within the scope of the claims of the present invention and modifications shall fall within the scope of the claims of the present invention.

Claims (20)

A liquid storage atomization assembly, characterized in that the liquid storage atomization assembly (60) is formed with an air flow channel (63) for circulating high-speed air flow and at least two air flow channels (63) connected with the air flow channel (63). Liquid inlet channel (622). The liquid substrate entering the airflow channel (63) from the at least two liquid inlet channels (622) is atomized by the high-speed airflow circulating in the airflow channel (63). The liquid storage atomization assembly according to claim 1, characterized in that each liquid inlet channel (622) is tangent to the cavity wall of the air flow channel (63). The liquid storage atomization assembly according to claim 1, characterized in that the cross-sectional area of each liquid inlet channel (622) is less than or equal to 0.126mm². The liquid storage atomization assembly according to claim 1, characterized in that the extension direction of each liquid inlet channel (622) is perpendicular to the extension direction of the air flow channel (63). The liquid storage atomization assembly according to claim 1, characterized in that the air flow channel (63) includes an atomization chamber (632) and an air supply channel (631), and the atomization chamber (632) is respectively connected with the atomization chamber (632). The air supply channel (631) and the at least two liquid inlet channels (622) are connected, and an atomization surface (6321) is formed at one end of the atomization chamber (632) close to the air supply channel (631). The atomization surface (6321) is provided with an atomization port (6320) that connects the air supply channel (631) and the atomization chamber (632). The liquid matrix flowing into the atomization chamber (632) can be The atomization surface (6321) forms a liquid film, and the liquid film is cut by the high-speed airflow to form liquid particles. The liquid storage atomization assembly according to claim 5, characterized in that a liquid inlet (620) is formed at one end of each liquid inlet channel (622) close to the atomization chamber (632). The vertical distance between the center line of the liquid port (620) and the atomization surface (6321) is 0.3mm~0.8mm. The liquid storage atomization assembly according to claim 5, characterized in that the outer diameter of the atomization surface (6321) is 0.4~0.7mm. The liquid storage atomization assembly according to claim 5, characterized in that the aperture of the atomization port (6320) is 0.22mm~0.35mm. The liquid storage atomization assembly according to claim 5, characterized in that the axis of at least one liquid inlet channel (622) does not intersect with the central axis of the atomization chamber (632), so that the liquid substrate can enter the atomization chamber (632). The atomization chamber (632) has a circumferential velocity. The liquid storage atomization assembly according to claim 5, characterized in that the air supply channel (631) includes a contraction channel (6311), and the cross-sectional area of the contraction channel (6311) changes from a distance away from the atomization chamber (6311). 632) gradually decreases from one end close to the atomization chamber (632). The liquid storage atomization assembly according to claim 5, characterized in that the air flow channel (63) further includes an expansion channel (633), and the expansion channel (633) is away from the atomization chamber (632). One end of the air supply channel (631) is connected, and the cross-sectional area of the expansion channel (633) gradually increases from an end close to the atomization chamber (632) to an end far away from the atomization chamber (632). The liquid storage atomization assembly according to claim 1, characterized in that the at least two liquid inlet channels (622) are arranged in rotational symmetry with respect to the central axis of the air flow channel (63). The liquid storage atomization assembly according to any one of claims 1 to 12, characterized in that a liquid storage cavity (61) is also formed in the liquid storage atomization assembly (60) and the liquid storage cavity (61) is 61) The main channel (621) connected with the at least two liquid inlet channels (622). The liquid storage atomization assembly according to claim 13, characterized in that the liquid storage chamber (61) is annular and surrounds the air flow channel (63). The liquid storage atomization assembly according to claim 13, characterized in that at least two main channels (621) are formed in the liquid storage atomization assembly (60), and the at least two main channels (621) are respectively Connected to the at least two liquid inlet channels (622) in one-to-one correspondence. The liquid storage atomization assembly according to claim 15, characterized in that the at least two main channels (621) are arranged in rotational symmetry with respect to the central axis of the air flow channel (63). The liquid storage atomization assembly according to claim 15, characterized in that each main channel (621) is a linear channel. The liquid storage atomization assembly according to claim 13, characterized in that the main channel (621) includes a first channel (6211) and a second channel (6212), and both ends of the first channel (6211) are respectively connected with the liquid storage chamber (61) and the second channel (6212); the second channel (6212) is an annular channel, and the at least two liquid inlet channels (622) are connected to the second channel (6212). Channel (6212) is connected. The liquid storage atomization assembly according to claim 18, characterized in that the second channel (6212) and the air flow channel (63) are coaxially arranged. An electronic atomization device, characterized by comprising the liquid storage atomization assembly (60) according to any one of claims 1-19.