WO2023207368A1 - Electronic atomization apparatus, liquid storage and atomization assembly thereof, and nozzle - Google Patents

Abstract

An electronic atomization apparatus (100), a liquid storage and atomization assembly (60) thereof, and a nozzle (62). A liquid storage cavity (610) used to store a liquid matrix, an airflow channel (622) used to circulate a high-speed airflow, and a resistive liquid supply channel (611) used to put the liquid storage cavity (610) in communication with the airflow channel (622) are formed inside the liquid storage and atomization assembly (60). The high-speed airflow flowing in the airflow channel (622) causes a negative pressure to be generated in the airflow channel (622), the negative pressure being capable of sucking liquid matrix in the liquid storage cavity (610) into the airflow channel (622), and the liquid matrix entering the airflow channel (622) being atomized by the high-speed airflow flowing in the airflow channel (622). The resistive liquid supply channel (611) comprises a liquid supply tail section (621) close to the airflow channel (622), the liquid supply tail section (621) being a capillary channel. The continuous flowing liquid matrix is atomized into liquid particles with the assistance of the high-speed airflow, so that low-temperature atomization may be achieved. In addition, the capillary force in the liquid supply tail section (621) may reduce backflow of the liquid matrix to the liquid storage cavity (610) when suction ends, thereby preventing a delay in liquid supply during the next suction.

Description

Electronic atomization device and its liquid storage atomization assembly and nozzle Technical field

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

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.

Contents of the invention

The technical problem to be solved by the present invention is to provide an improved liquid storage atomization assembly and nozzle and an electronic atomization device having the liquid storage atomization assembly or nozzle 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, which is formed with a liquid storage cavity for storing a liquid substrate, an airflow channel for circulating high-speed airflow, and A resistance liquid supply channel connects the liquid storage chamber and the air flow channel; the high-speed air flow flowing in the air flow channel generates a negative pressure in the air flow channel, and the negative pressure can push the liquid storage cavity The liquid substrate in the air flow channel is sucked out to the air flow channel, and the liquid substrate entering the air flow channel is atomized by the high-speed air flow circulating in the air flow channel;

The resistance liquid supply channel includes a liquid supply end section close to the air flow channel, and the liquid supply end section is a capillary channel.

In some embodiments, when the high-speed airflow stops flowing in the airflow channel, the force of the liquid matrix in the final liquid supply section at the gas-liquid interface satisfies ΔP _MAO ≥ ΔP; where ΔP _MAO is The capillary force in the final liquid supply section, ΔP, is the negative pressure in the liquid storage chamber - the gravity of the liquid matrix in the liquid storage chamber.

In some embodiments, the liquid supply end section is a linear channel, and the extension direction of the liquid supply end section is perpendicular to the extension direction of the air flow channel.

In some embodiments, the hydraulic diameter of the final liquid supply section is less than or equal to 0.3 mm.

In some embodiments, the resistance liquid supply channel further includes a main body section connecting the final liquid supply section and the liquid storage chamber, and the cross-sectional area of the main body section is greater than the cross-sectional area of the final liquid supply section.

In some embodiments, the cross-sectional area of the main body segment ranges from 0.09 mm² to 0.16 mm².

In some embodiments, the air flow channel includes an air supply channel and an atomization chamber. The atomization chamber is connected to the air supply channel and the liquid supply end section respectively. The atomization chamber is close to the liquid supply end section. One end surface of the air channel forms 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 flow on the atomization surface. A liquid film is formed, which can be cut by the high-speed airflow to form liquid particles.

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

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

In some embodiments, the liquid storage atomization assembly includes a liquid storage shell and a nozzle at least partially housed in the liquid storage shell, the liquid storage chamber is formed in the liquid storage shell, the air flow channel and the The liquid supply end section is formed in the nozzle.

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

The present invention also provides a nozzle. An air flow channel and a final liquid supply section are formed in the nozzle. The final liquid supply section is a capillary channel. The final liquid supply section is connected with the air flow channel and is used to supply the liquid to the target. The air flow channel outputs a liquid substrate; the air flow channel is used to circulate high-speed air flow, and the liquid substrate entering the air flow channel from the liquid supply end section can be atomized by the high-speed air flow circulating in the air flow channel.

In some embodiments, the liquid supply end section is a linear channel, and the extension direction of the liquid supply end section is perpendicular to the extension direction of the air flow channel.

In some embodiments, the hydraulic diameter of the final liquid supply section is less than or equal to 0.3 mm.

In some embodiments, a front liquid supply section is also formed in the nozzle. The front liquid supply section is connected with an end of the final liquid supply section away from the air flow channel. The cross-sectional area of the front liquid supply section is larger than the end of the final liquid supply section. The cross-sectional area of the final liquid supply section.

In some embodiments, the cross-sectional area of the liquid supply front section ranges from 0.09 mm² to 0.16 mm².

In some embodiments, the air flow channel includes an air supply channel and an atomization chamber. The atomization chamber is connected to the air supply channel and the liquid supply end section respectively. The atomization chamber is close to the liquid supply end section. One end surface of the air channel forms 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 flow on the atomization surface. A liquid film is formed, which can be cut by the high-speed airflow to form liquid particles.

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

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

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

Implementing the present invention has at least the following beneficial effects: the present invention atomizes the continuously flowing liquid matrix into liquid particles through high-speed airflow assistance, thereby enabling low-temperature atomization; in addition, by setting the liquid supply end section as a capillary channel, the liquid supply end section is used to atomize the liquid matrix into liquid particles. The capillary force within the segment is used to reduce the backflow of the liquid matrix into the liquid storage chamber at the end of suction and prevent the delay of liquid supply during the next suction.

Description of 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 an electronic atomization device in some embodiments 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 three-dimensional structural diagram of the liquid storage atomization assembly in Figure 2;

Figure 4 shows the stress situation of the liquid matrix in the liquid inlet channel when suction is stopped;

Figure 5 is a schematic structural diagram of the longitudinal section of the nozzle in Figure 3;

Figure 6 is a dimensioned diagram of the nozzle shown in Figure 5;

Figure 7 is a schematic structural diagram of a longitudinal section of a nozzle in an alternative version of the present invention.

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 some embodiments 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 application, In embodiments, it may be substantially 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 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 .

As shown in FIG. 3 , the liquid storage atomization assembly 60 includes a liquid storage case 61 and a nozzle 62 at least partially accommodated in the liquid storage case 61 . Among them, a liquid storage chamber 610 for storing liquid substrate is formed in the liquid storage shell 61, an air flow channel 622 is formed in the nozzle 62, and a resistance supply connecting the liquid storage cavity 610 and the air flow channel 622 is also formed in the liquid storage atomization assembly 60. Liquid channel 611, so that the liquid matrix in the liquid storage chamber 610 can flow to the air flow channel 622 through the resistance liquid supply channel 611. The air source 40 is connected to the air flow channel 622 and is used to provide high-speed air flow in the air flow channel 622. It can usually be an air pump. The liquid matrix entering the air flow channel 622 from the resistance liquid supply channel 611 can be atomized by the high-speed air flow flowing in the air flow channel 622 to form fine liquid particles.

The resistance liquid supply channel 611 includes a liquid supply end section 621 connected with the air flow channel 622 and a main body section 612 connected with the liquid supply end section 621 and the liquid storage chamber 610 . The final liquid supply section 621 can be a capillary channel, that is, the liquid matrix can generate capillary force in the final liquid supply section 621 . In some embodiments, the cross-sectional area of the liquid supply end section 621 may be less than 0.08mm².

Since the air source 40 stops working after the suction is completed, the negative pressure generated by the high-speed air flow in the resistance liquid supply channel 611 disappears, and the power for the liquid matrix in the resistance liquid supply channel 611 to flow toward the nozzle 62 disappears, while the liquid storage There is a negative pressure in the chamber 610, and the negative pressure in the liquid storage chamber 610 will suck back the liquid matrix in the final liquid supply section 621, causing the liquid supply to be delayed during the next suction. Therefore, by designing the liquid supply end section 621 of the resistance liquid supply channel 611 close to the air flow channel 622 as a capillary channel, and ensuring that the liquid supply end section 621 has a set of critical dimensions (for example, channel cross-sectional area and channel length), the liquid supply can be utilized The capillary force in the final section 621 reduces backflow to achieve a stable liquid supply that starts and stops, and prevents the liquid substrate from flowing back to the liquid storage chamber 610 when the gas source 40 stops working, causing a delay in liquid supply during the next suction.

Figure 4 shows the stress situation of the liquid matrix 200 in the final liquid supply section 621 after the suction is stopped and the air source 40 stops working. After the air source 40 stops working, the power of the liquid substrate in the final liquid supply section 621 to flow toward the nozzle 62 disappears. The force on the liquid substrate 200 in the final liquid supply section 621 on the gas-liquid interface 201 and the movement of the liquid surface The situation is:

If ΔP _gross = ΔP, then the liquid level will stop after a short movement in the direction of the liquid storage chamber 610, and there will be a short delay when the air source 40 is started next time;

If ΔP _gross < ΔP, the liquid level will continue to move toward the liquid storage chamber 610 until enough liquid matrix flows back to the liquid storage chamber 610, so that ΔP is reduced to balance with ΔP _gross due to the rise of the liquid level in the liquid storage chamber 610. The liquid level movement will stop, and a relatively large cavity will be formed in the resistance liquid supply channel 611 at this time, resulting in a long delay when the air source 40 is started next time;

If ΔP _gross > ΔP, the liquid level will not flow back and can be atomized immediately when the air source 40 is started next time.

Among them, ΔP = negative pressure in the liquid storage chamber 610 - gravity of the liquid matrix in the liquid storage chamber 610, _ΔP = capillary force in the final liquid supply section 621.

In some embodiments, the cross-sectional area of the final liquid supply section 621 is 0.07mm² (or aperture 0.3mm), and the channel length is ≥ 2mm. When the air source 40 stops working, the liquid matrix in the final liquid supply section 621 will not be affected by the liquid storage chamber. The negative pressure in 610 flows back to the liquid storage chamber 610, which can achieve the effect of instant start. In other embodiments, the cross-sectional area of the liquid supply end section 621 can be 0.05mm², and the channel length is ≥1mm, which can also achieve stable liquid supply that starts and stops. In other embodiments, the hydraulic diameter of the liquid supply end section 621 is less than or equal to 0.3 mm, and stable liquid supply that starts and stops can also be achieved. Generally, the smaller the cross-sectional area of the final liquid supply section 621 is, the smaller the channel length of the final liquid supply section 621 is required to achieve the effect of instant start.

In addition, as shown in FIG. 3 and FIG. 5-6 , the resistance liquid supply channel 611 can also be used to control the flow rate of liquid supplied to the air flow channel 622 to achieve quantitative liquid supply to the air flow channel 622 . Generally, the size of the designed resistance liquid supply channel 611 can be matched according to the flow demand, that is, the resistance liquid supply channel 611 can generate resistance that matches the liquid supply power under the design flow rate. Specifically, the negative pressure generated in the air flow channel 622 is the liquid supply power, and the liquid supply resistance includes the resistance along the liquid supply channel 611 and the negative pressure in the liquid storage chamber 610 . By calculating the resistance required along the resistance liquid supply channel 611 under the design flow rate, the specific diameter and length of the resistance liquid supply channel 611 are designed.

Generally speaking, the greater the viscosity of the liquid matrix, the greater the resistance of the liquid matrix when flowing in the resistance liquid supply channel 611; the longer the length of the resistance liquid supply channel 611, the greater the resistance in the resistance liquid supply channel 611. ; The larger the cross-sectional area of the resistance liquid supply channel 611, the smaller the resistance in the resistance liquid supply channel 611; the more tortuous the resistance liquid supply channel 611 is, the greater the resistance in the resistance liquid supply channel 611. In some embodiments, the viscosity of the liquid matrix is 20cp~250cp; the overall length of the resistance liquid supply channel 611 is 6mm~15mm. The final liquid supply section 621 and the main body section 612 are both linear channels extending laterally, and the central axes of the final liquid supply section 621 and the main body section 612 coincide with each other. The main body section 612 is a weak capillary force channel, that is, the liquid matrix can generate weak capillary force in the main body section 612 . The cross-sectional area of the main body section 612 is larger than the cross-sectional area of the final liquid supply section 621. In some embodiments, the cross-sectional area of the main body section 612 can range from 0.09 mm² to 0.16 mm².

In this embodiment, the final liquid supply section 621 is formed in the nozzle 62 , and the main section 612 is formed in the liquid storage shell 61 . The nozzle 62 generally has a cylindrical shape, which can be longitudinally inserted into the liquid storage case 61 and can be disposed coaxially with the liquid storage case 61 . The airflow channel 622 runs through the nozzle 62 longitudinally and may be coaxially disposed with the nozzle 62 . The liquid supply end section 621 extends laterally inward from one side of the nozzle 62 to communicate with the air flow channel 622 , and the extension direction of the liquid supply end section 621 is perpendicular to the extension direction of the air flow channel 622 . It is understood that in other embodiments, the shape of the nozzle 62 may also be in other shapes such as an ellipse or a square. In other embodiments, the liquid supply end section 621 can also be partially formed in the nozzle 62 and partially formed in the liquid storage shell 61; or, the main body section 612 can also be partially formed in the nozzle 62 and partially formed in the liquid storage shell. inside the shell 61.

The air flow channel 622 may include an air supply channel 623 and an atomization chamber 625. The atomization chamber 625 is connected to the air source 40 through the air supply channel 623, and is connected to the liquid storage chamber 610 through the final liquid supply section 621. An atomization surface 6250 is formed on an end surface of the atomization chamber 625 close to the air supply channel 623, and an atomization port 6251 is also formed on the atomization surface 6250. The high-speed airflow from the air supply channel 623 is sprayed into the atomization chamber 625 through the atomization port 6251 and flows at high speed in the atomization chamber 625. The high-speed airflow generates a negative pressure in the final liquid supply section 621 according to Bernoulli's equation. The negative pressure is transmitted to the liquid storage chamber 610 to suck the liquid matrix in the liquid storage chamber 610 to the atomization chamber 625, and a liquid film is formed on the atomization surface 6250. As the liquid supply process continues, the liquid film moves to the edge of the hole wall of the atomization port 6251 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 6251 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 625 in a non-phase change atomization mode. The particle size distribution of the liquid particles formed after atomization in the atomization chamber 625 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 625 is a straight cylindrical channel, and its hole wall is perpendicular to the atomization surface 6250. In this embodiment, the atomization chamber 625 is a right cylindrical channel, the atomization surface 6250 is in the shape of concentric rings, and the inner wall surface of the atomization surface 6250 defines the atomization port 6251. In other embodiments, the cross-section of the atomization chamber 625, the atomization surface 6250, or the atomization port 6251 may also be an ellipse, a rectangle, or other non-circular shapes.

Parameters such as the size and shape of the atomization port 6251 and the atomization chamber 625 can affect the negative pressure in the atomization chamber 625 and the particle size of the generated liquid particles, and can make the flow rate more stable. In some embodiments, the aperture D of the atomization port 6251, the aperture W1 of the atomization chamber 625, and the length H of the atomization chamber 625 can be set to appropriate sizes as needed.

Specifically, the aperture D of the atomization port 6251 is related to the airflow speed (m/s) coming out of the atomization port 6251, which can affect the particle size of the generated liquid particles. In some embodiments, the aperture D of the atomization port 6251 may range from 0.2mm to 0.4mm, preferably from 0.22mm to 0.35mm.

The aperture W1 of the atomization chamber 625 will affect the airflow velocity in the atomization chamber 625, thereby affecting the negative pressure in the atomization chamber 625 and the final liquid supply section 621. This negative pressure can cause the liquid substrate to be sucked from the final liquid supply section 621 to the atomization chamber 625 . In some embodiments, the aperture W1 of the atomization chamber 625 may range from 0.7 mm to 1.3 mm. The length H of the atomization chamber 625 may be 0.8mm~3.0mm. It can be understood that in other embodiments, the atomization port 6251 or the atomization chamber 625 may also have a non-circular cross-section; when the atomization port 6251 or the atomization chamber 625 has a non-circular cross-section, the aperture of the atomization port 6251 D or the aperture W1 of the atomization chamber 625 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 range of D is 0.22mm~0.35mm, the range of H is 1.5mm~3.0mm, and the range of W1 is 0.7mm~1.3mm. The value ranges of D, H, and W1 can be This gives the nozzle 62 advantages in the manufacturing process.

The end of the liquid supply end section 621 that communicates with the atomization chamber 625 has a liquid supply port 6210. The distance L between the liquid supply port 6210 and the atomization surface 6250 is the key to ensuring the formation of a liquid film. In this embodiment, the distance L between the liquid supply port 6210 and the atomization surface 6250 is the vertical distance between the center of the liquid supply port 6210 and the atomization surface 6250. In some embodiments, the distance L between the liquid supply port 6210 and the atomization surface 6250 may range from 0.3 mm to 0.8 mm. Preferably, L is 0.35 mm to 0.6 mm.

Further, the air flow channel 622 also includes an expansion channel 626, which is connected to an end of the atomization chamber 625 away from the air supply channel 623, and is used to diffuse the liquid particles generated after atomization in the atomization chamber 625 in the form of a jet. Spray out to increase the spray area of liquid particles. In this embodiment, the expansion channel 626 is a conical channel that extends longitudinally and has a hole diameter that gradually increases from bottom to top. The atomization angle α of the expansion channel 626 (that is, the expansion angle of the expansion channel 626) must have a suitable range to ensure that the ejected liquid particles have a suitable injection range. In some embodiments, the atomization angle α of the expansion channel 626 may be 30 ⁰ ~70 ⁰ . In other embodiments, the expansion channel 626 may also be in an elliptical cone shape, a pyramid shape, or other shapes.

In some embodiments, the air supply channel 623 may include an acceleration section 6231, which has a constricted shape, and its cross-sectional area gradually decreases from an end far away from the atomization chamber 625 to an end close to the atomization chamber 625, so that the air supply channel 623 can be The air flow from the air source 40 is accelerated and then sprayed to the atomization chamber 625 . In this embodiment, the accelerating section 6231 is a conical channel extending longitudinally and the aperture gradually decreases from bottom to top. The aperture of the upper end of the accelerating section 6231 is smaller than the aperture of the atomization chamber 625, so that the aperture of the accelerating section 6231 and the atomization chamber 625 The junction forms a circular atomization surface 6250. It is understood that in other embodiments, the accelerating section 6231 may also be an elliptical cone shape or a pyramid shape or other contracted shapes.

Further, the air supply channel 623 also includes a communication section 6232 that communicates with the acceleration section 6231. The acceleration section 6231 is connected to the air source 40 through the communication section 6232. The communication section 6232 may be a straight cylindrical channel extending longitudinally. The upper end of the communication section 6232 is connected with the accelerating section 6231, and the aperture of the communication section 6232 is consistent with the aperture of the lower end of the accelerating section 6231. In other embodiments, the cross-section of the communication section 6232 may also be an ellipse, a rectangle, or other non-circular shapes. It can be understood that in other embodiments, the air supply channel 623 formed in the nozzle 62 may also include only the acceleration section 6231; or, when the air flow rate is sufficient, the air supply channel 623 may also only include the communication section 6232.

The liquid storage shell 61 may include a liquid storage body 613 and a liquid storage base 614 that cooperate with each other. In this embodiment, the liquid storage chamber 610 and the main body section 612 are both formed in the liquid storage main body 613 . Specifically, the bottom surface of the liquid storage body 613 is concave to form an annular liquid storage cavity 610 , and the side wall of the liquid storage cavity 610 close to the nozzle 62 extends transversely toward the nozzle 62 to form a main body section 612 . It can be understood that in other embodiments, the liquid storage chamber 610 and/or the main body section 612 can also be formed in the liquid storage seat 614, or can also be partially formed in the liquid storage main body 613 and partially in the liquid storage seat 614. .

Furthermore, a liquid injection channel 615 connected to the liquid storage chamber 610 may be formed on the liquid storage shell 61 so that liquid can be injected into the liquid storage chamber 610 again after the liquid matrix in the liquid storage chamber 610 is used up. In this embodiment, the liquid injection channel 615 is formed in the liquid storage body 613 and extends longitudinally, and the lower end of the liquid injection channel 615 is connected with the liquid storage chamber 610 .

Further, as shown in FIG. 2 , the electronic atomization device 100 further includes 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 62 . The liquid particles ejected from the nozzle 62 upwardly impact the heating element 80 and are 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 62 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 62 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 610, 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 62 can also hit the heating element 80 downward, that is, the heating element 80 can also be disposed below the nozzle 62; or, the liquid ejected from the nozzle 62 The particles may also impact the heating element 80 laterally, that is, the heating element 80 and the nozzle 62 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 62 may be directly output through the output channel 70 and sucked or inhaled by the user.

Furthermore, the housing 10 may also be provided with a bracket assembly 11, which divides the housing 10 into a first receiving space 121 located at the upper part and a second receiving space 122 located at the lower part. The control module 20 , the power supply 30 , and the air source 40 can all be accommodated in the second accommodation space 122 . The liquid storage atomization assembly 60 can be received in the first receiving space 121 and supported on the bracket assembly 11 . 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 be accommodated at the bottom of the bracket assembly 11 and can sense changes in the airflow when the user inhales. It 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 7 shows a nozzle 62 in an alternative version of the present invention. The main difference from the above embodiment is that in this embodiment, a liquid supply end section 621 and a liquid supply front section 624 are formed in the nozzle 62. The end section 621 is connected to the atomization chamber 625 , and the liquid supply front section 624 is connected to an end of the liquid supply end section 621 away from the atomization chamber 625 . The structure of the final liquid supply section 621 is similar to the relevant description in the above embodiment, and will not be described again here. The liquid supply front section 624 is a weak capillary force channel, which forms a part of the main body section 612 in the above embodiment.

In addition, in this embodiment, the wall surface of the hole of the expansion channel 626 is an arc surface, and the expansion channel 626 and the atomization chamber 625 are connected smoothly in a streamlined manner, for example, they are tangent by rounding. In some embodiments, the arc surface can be realized through processes such as rounding. The rounding method can also increase the atomization angle of the expansion channel 626, for example, the atomization angle can be increased from 40 ⁰ to 50 ⁰ . It can be understood that in other embodiments, the hole wall surface of the expansion channel 626 may also have other streamlined expansion shapes.

In addition, in this embodiment, only the acceleration section 6231 is formed in the nozzle 62 , and the atomization chamber 625 is connected to the air source through the acceleration section 6231 . 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)

1. A liquid storage atomization assembly, characterized in that the liquid storage atomization assembly (60) is formed with a liquid storage cavity (610) for storing a liquid substrate, an airflow channel (622) for circulating high-speed airflow, and a The liquid storage chamber (610) is connected with the resistance liquid supply channel (611) of the air flow channel (622); the high-speed air flow flowing in the air flow channel (622) causes the air flow channel (622) to generate Negative pressure, the negative pressure can suck the liquid matrix in the liquid storage chamber (610) to the air flow channel (622), and the liquid matrix entering the air flow channel (622) is affected by the air flow channel (622) ) and atomized by the high-speed airflow circulating in it;

   The resistance liquid supply channel (611) includes a liquid supply end section (621) close to the air flow channel (622), and the liquid supply end section (621) is a capillary channel.
2. The liquid storage atomization assembly according to claim 1, characterized in that when the high-speed airflow stops flowing in the airflow channel (622), the liquid matrix in the final liquid supply section (621) is in the gas flow channel. The force on the liquid interface (201) satisfies ΔP _hair ≥ ΔP; where ΔP _hair is the capillary force in the liquid supply end section (621), and ΔP is the negative pressure in the liquid storage chamber (610) - so The gravity of the liquid matrix in the liquid storage chamber (610).
3. The liquid storage atomization assembly according to claim 1, characterized in that the liquid supply end section (621) is a linear channel, and the extension direction of the liquid supply end section (621) is in line with the air flow channel (622). ) extends vertically.
4. The liquid storage atomization assembly according to claim 1, characterized in that the hydraulic diameter of the liquid supply end section (621) is less than or equal to 0.3mm.
5. The liquid storage atomization assembly according to claim 1, characterized in that the resistance liquid supply channel (611) further includes a main body section connecting the liquid supply end section (621) and the liquid storage chamber (610). (612), the cross-sectional area of the main body section (612) is larger than the cross-sectional area of the liquid supply end section (621).
6. The liquid storage atomization assembly according to claim 5, characterized in that the cross-sectional area of the main body section (612) ranges from 0.09 mm² to 0.16 mm².
7. The liquid storage atomization assembly according to claim 1, characterized in that the air flow channel (622) includes an air supply channel (623) and an atomization chamber (625), and the atomization chamber (625) is connected to the atomization chamber (625) respectively. The air supply channel (623) is connected to the liquid supply end section (621), and an end surface of the atomization chamber (625) close to the air supply channel (623) forms an atomization surface (6250). The atomization surface (6250) is provided with an atomization port (6251) that connects the air supply channel (623) and the atomization chamber (625). The liquid matrix flowing into the atomization chamber (625) can be in the atomization chamber (625). The atomization surface (6250) forms a liquid film, which can be cut by the high-speed airflow to form liquid particles.
8. The liquid storage atomization assembly according to claim 7, characterized in that the air supply channel (623) includes an acceleration section (6231), and the cross-sectional area of the acceleration section (6231) is formed away from the atomization chamber ( 625) gradually decreases from one end close to the atomization chamber (625).
9. The liquid storage atomization assembly according to claim 7, characterized in that the central axis of the atomization port (6251) coincides with the central axis of the atomization chamber (625).
10. The liquid storage atomization assembly according to any one of claims 1 to 9, characterized in that the liquid storage atomization assembly includes a liquid storage case (61) and at least a portion of the liquid storage case (61). Nozzle (62), the liquid storage chamber (610) is formed in the liquid storage shell (61), the air flow channel (622) and the liquid supply end section (621) are formed in the nozzle (62) Inside.
11. An electronic atomization device, characterized by comprising the liquid storage atomization assembly according to any one of claims 1-10.
12. A nozzle, characterized in that an air flow channel (622) and a final liquid supply section (621) are formed in the nozzle (62), and the final liquid supply section (621) is a capillary channel, and the final liquid supply section (621) is a capillary channel. (621) is connected with the air flow channel (622) and is used to output liquid substrate to the air flow channel (52); the air flow channel (622) is used to circulate high-speed air flow from the liquid supply end section (621) ) The liquid substrate entering the air flow channel (622) can be atomized by the high-speed air flow circulating in the air flow channel (622).
13. The nozzle according to claim 12, characterized in that the final liquid supply section (621) is a linear channel, and the extension direction of the final liquid supply section (621) is consistent with the extension direction of the air flow channel (622). vertical.
14. The nozzle according to claim 12, characterized in that the hydraulic diameter of the final liquid supply section (621) is less than or equal to 0.3mm.
15. The nozzle according to claim 12, characterized in that a liquid supply front section (624) is also formed in the nozzle (62), and the liquid supply front section (624) and the liquid supply end section (621) are far away from each other. One end of the air flow channel (622) is connected, and the cross-sectional area of the liquid supply front section (624) is larger than the cross-sectional area of the liquid supply end section (621).
16. The nozzle according to claim 15, characterized in that the cross-sectional area of the liquid supply front section (624) ranges from 0.09 mm² to 0.16 mm².
17. The nozzle according to any one of claims 12 to 16, characterized in that the air flow channel (622) includes an air supply channel (623) and an atomization chamber (625), and the atomization chamber (625) is respectively connected with The air supply channel (623) is connected to the liquid supply end section (621), and an end surface of the atomization chamber (625) close to the air supply channel (623) forms an atomization surface (6250), so The atomization surface (6250) is provided with an atomization port (6251) connecting the air supply channel (623) and the atomization chamber (625), and the liquid matrix flowing into the atomization chamber (625) can be The atomization surface (6250) forms a liquid film, and the liquid film can be cut by the high-speed airflow to form liquid particles.
18. The nozzle according to claim 17, characterized in that the air supply channel (623) includes an acceleration section (6231), the cross-sectional area of the acceleration section (6231) is formed by an end away from the atomization chamber (625). It gradually decreases toward the end near the atomization chamber (625).
19. The nozzle according to claim 17, characterized in that the central axis of the atomization port (6251) coincides with the central axis of the atomization chamber (625).
20. An electronic atomization device, characterized by comprising the nozzle (62) according to any one of claims 12-19.