CN116998767A

CN116998767A - Electronic atomization device and liquid storage atomization assembly thereof

Info

Publication number: CN116998767A
Application number: CN202210468918.3A
Authority: CN
Inventors: 杨豪; 刘成川; 高椋; 林作飘; 雷桂林
Original assignee: Hainan Moore Brothers Technology Co Ltd
Current assignee: Hainan Moore Brothers Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-11-07
Also published as: WO2023207366A1

Abstract

The invention relates to an electronic atomization device and a liquid storage atomization assembly thereof, wherein a liquid storage cavity, an air flow channel and a resistance liquid supply channel which communicates the liquid storage cavity with the air flow channel are formed in the liquid storage atomization assembly, and the resistance liquid supply channel is configured to control the flow rate of liquid supplied from the liquid storage cavity to the air flow channel. The flow rate from the liquid storage cavity to the air flow channel is controlled through the resistance liquid supply channel, the size and the shape of the resistance liquid supply channel can be designed according to the flow rate demand matching, and the flow rate from the liquid storage cavity to the air flow channel can reach the design value.

Description

Electronic atomization device and liquid storage atomization assembly thereof

Technical Field

The invention relates to the field of atomization, in particular to an electronic atomization device and a liquid storage atomization assembly thereof.

Background

Electronic atomizing devices generally have a significant impact on the performance of the electronic atomizing device by heating the liquid substrate in the atomizing chamber to atomize the liquid in the liquid storage chamber and supply the liquid to the atomizing chamber. Too large a supply amount may cause incomplete atomization and leakage. When the liquid supply amount is insufficient, the formed aerosol tends to generate burnt smell, and the taste is remarkably deteriorated.

Disclosure of Invention

The invention aims to solve the technical problem of providing an improved liquid storage atomization assembly and an electronic atomization device with the same aiming at the defects of the prior art.

The technical scheme adopted for solving the technical problems is as follows: a liquid storage atomizing assembly is constructed, a liquid storage cavity for storing a liquid substrate, an airflow channel for circulating high-speed airflow, and a resistance liquid supply channel for communicating the liquid storage cavity with the airflow channel are formed in the liquid storage atomizing assembly, and the resistance liquid supply channel is configured for controlling the flow rate of liquid supplied from the liquid storage cavity to the airflow channel.

In some embodiments, the high-speed air flowing in the air flow channel causes negative pressure to be generated in the air flow channel, and the negative pressure can suck the liquid matrix in the liquid storage cavity to the air flow channel, so that the liquid matrix entering the air flow channel is atomized by the high-speed air flowing in the air flow channel.

In some embodiments, the resistive fluid supply channel includes a body segment in communication with the fluid reservoir and a fluid supply end segment in communication with the body segment and the air flow channel, the body segment having a cross-sectional area greater than a cross-sectional area of the fluid supply end segment.

In some embodiments, the body segment is a weak capillary channel and the liquid-supply end segment is a capillary channel.

In some embodiments, the body section has a cross-sectional area in the range of 0.09mm ² ～0.16mm ² 。

In some embodiments, the cross-sectional area of the liquid-feed end is less than 0.08mm ² 。

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

In some embodiments, the body section is a linear or non-linear channel.

In some embodiments, the liquid supply end section is a linear channel, and the extending direction of the liquid supply end section is perpendicular to the extending direction of the airflow channel.

In some embodiments, the resistive fluid supply channels have an extension length of 6mm to 15mm.

In some embodiments, the airflow channel comprises an air supply channel and an atomization cavity, the atomization cavity is respectively communicated with the air supply channel and the resistance liquid supply channel, the atomization cavity is close to one end face of the air supply channel to form an atomization surface, the atomization surface is provided with an atomization opening which is communicated with the air supply channel and the atomization cavity, a liquid substrate flowing into the atomization cavity can form a liquid film on the atomization surface, and the liquid film can be cut by the high-speed airflow to form liquid particles.

In some embodiments, the atomizing face is further provided with a liquid lock tank capable of generating capillary force.

In some embodiments, the central axes of the atomizing port, the atomizing surface and the liquid locking groove are all coincident.

In some embodiments, the gas flow channel further comprises a diverging channel in communication with an end of the atomizing chamber remote from the gas supply channel, the diverging channel having a cross-sectional area that increases progressively from an end proximate to the atomizing chamber to an end remote from the atomizing chamber.

In some embodiments, the air supply channel includes an acceleration section in communication with the atomizing chamber, the acceleration section having a cross-sectional area that decreases progressively from an end distal to the atomizing chamber to an end proximal to the atomizing chamber.

In some embodiments, the atomizing surface is provided with a liquid lock groove which is formed by downwards sinking along the direction perpendicular to the atomizing surface, or the liquid lock groove is formed by upwards and outwards sinking from the outer edge of the atomizing surface.

In some embodiments, the reservoir atomization assembly includes a reservoir housing and a nozzle at least partially received in the reservoir housing, the reservoir cavity is formed within the reservoir housing, and the airflow passage is formed within the nozzle.

In some embodiments, the reservoir housing is further formed with a ventilation channel that communicates the reservoir chamber with the outside.

In some embodiments, the reservoir housing includes a reservoir body and a reservoir seat that cooperate with each other, the reservoir cavity is formed in the reservoir body, and the ventilation channel includes a ventilation groove formed in an outer surface of the reservoir seat.

The invention also provides an electronic atomization device, which comprises the liquid storage atomization assembly.

The implementation of the invention has at least the following beneficial effects: the flow rate from the liquid storage cavity to the air flow channel is controlled through the resistance liquid supply channel, the size and the shape of the resistance liquid supply channel can be designed according to the flow rate demand matching, and the flow rate from the liquid storage cavity to the air flow channel can reach the design value.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic perspective view of an electronic atomizing device according to some embodiments of the present disclosure;

fig. 2 is a schematic view of a longitudinal sectional structure of the electronic atomizing device shown in fig. 1;

FIG. 3 is a longitudinal cross-sectional view of the reservoir atomization assembly of FIG. 2;

FIG. 4 shows the stressing of the liquid matrix in the feed channel when the suction is stopped;

FIG. 5 is another angular longitudinal cross-sectional view of the reservoir atomization assembly of FIG. 3;

FIG. 6 is an exploded view of the reservoir atomization assembly of FIG. 3;

FIG. 7 is a schematic view of a longitudinal cross-sectional structure of the nozzle of FIG. 3;

FIG. 8 is a dimensioning of the nozzle shown in FIG. 7;

FIG. 9 is a schematic view of a longitudinal cross-sectional structure of a nozzle in a first alternative of the invention;

fig. 10 is a schematic view of a longitudinal sectional structure of a nozzle in a second alternative of the present invention.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made 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 present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the 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," "transverse," "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings or those conventionally placed in use of the product of the present invention, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "under" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is level less than the second feature.

Fig. 1-3 illustrate an electronic atomizing device 100 in some embodiments of the present invention, the electronic atomizing device 100 being operable to atomize a liquid substrate to produce an aerosol that can be inhaled or inhaled by a user, which in this embodiment can be generally cylindrical. It is understood that in other embodiments, the electronic atomizing device 100 may have other shapes such as an elliptic cylinder, a flat cylinder, or a square cylinder. The liquid matrix may include tobacco tar or liquid medicine.

The electronic atomizing device 100 may include a housing 10, a control module 20 housed in the housing 10, a power source 30, a gas source 40, and a liquid storage atomizing assembly 60. The control module 20 is electrically connected to the air source 40, and is configured to receive an instruction, where the instruction may be triggered by a user or automatically triggered when the electronic atomizing device 100 satisfies a certain condition, and the control module 20 controls the operation of the air source 40 according to the instruction. The power supply 30 is electrically connected to the control module 20 and the air source 40, respectively, and is used for providing electric energy to the control module 20 and the air source 40.

The reservoir atomization assembly 60 includes a reservoir housing 61 and a nozzle 62 at least partially housed within the reservoir housing 61. Wherein, a liquid storage cavity 610 for storing liquid matrix is formed in the liquid storage shell 61, an air flow channel 622 is formed in the nozzle 62, and a resistance liquid supply channel 611 which is communicated with the liquid storage cavity 610 and the air flow channel 622 is also formed in the liquid storage atomization assembly 60, so that the liquid matrix in the liquid storage cavity 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 passage 622 for providing a high velocity air flow through the air flow passage 622, which may typically be an air pump. The liquid medium entering the gas flow passage 622 from the resistance liquid supply passage 611 can be atomized by the high-speed gas flow flowing through the gas flow passage 622 to form fine liquid particles.

The resistive fluid supply channel 611 includes a fluid supply end segment 621 in communication with the fluid flow channel 622 and a body segment 612 in communication with the fluid supply end segment 621 and the fluid reservoir 610. The liquid supply end 621 may be a capillary channel, i.e. the liquid matrix is capable of generating capillary forces in the liquid supply end 621. In some embodiments, the cross-sectional area of the liquid supply end 621 may be less than 0.08mm ² 。

After the suction is finished, the air source 40 stops working, the negative pressure generated by the high-speed air flow in the resistance liquid supply channel 611 disappears, the power of the liquid matrix in the resistance liquid supply channel 611 flowing towards the direction of the nozzle 62 disappears, and the negative pressure exists in the liquid storage cavity 610, and the negative pressure in the liquid storage cavity 610 can suck back the liquid matrix in the liquid supply end 621, so that the liquid supply is not timely in the next suction. Therefore, by designing the liquid supply end 621 of the resistive liquid supply channel 611 adjacent to the air flow channel 622 as a capillary channel and ensuring that the liquid supply end 621 has a set of critical dimensions (e.g., channel cross-sectional area and channel length), capillary forces within the liquid supply end 621 are utilized to reduce backflow to achieve a stable liquid supply that is stopped immediately, preventing liquid matrix backflow to the liquid storage chamber 610 when the air source 40 is stopped from causing a delay in the next suction.

Figure 4 shows the liquid matrix 200 being forced within the liquid supply end 621 after the suction is stopped and the gas source 40 is stopped. After the air source 40 stops working, the dynamic force of the liquid matrix in the liquid supply end section 621 flowing towards the direction of the nozzle 62 disappears, and the stress condition and the liquid level movement condition of the liquid matrix 200 in the liquid supply end section 621 on the gas-liquid interface 201 are as follows:

if DeltaP _{Wool (fur)} =Δp, the liquid level is stopped after a short movement in the direction of the liquid storage chamber 610, and there is a short delay when the air source 40 is started next time;

if DeltaP _{Wool (fur)} <ΔP will continue to move toward the reservoir 610 until enough liquid matrix flows back into the reservoir 610 such that ΔP will decrease to a level equal to ΔP due to the rising of the liquid level in the reservoir 610 _{Wool (fur)} The balance is maintained, and the liquid level movement is stopped, so that a relatively large cavity is formed in the resistance liquid supply channel 611, and a longer time delay is caused when the air source 40 is started next time;

if DeltaP _{Wool (fur)} >Δp, the liquid level will not flow back and will atomize immediately the next time the air supply 40 is started.

Where Δp=negative pressure in the reservoir 610—gravity of the liquid matrix in the reservoir 610, Δp _{Wool (fur)} =capillary force within the liquid supply end 621.

In some embodiments, the cross-sectional area of the liquid supply end 621 is 0.07mm ² (or aperture 0.3 mm), the channel length is not less than 2mm, and the liquid matrix in the liquid supply end 621 can not flow back to the liquid storage cavity 610 due to the negative pressure in the liquid storage cavity 610 when the air source 40 stops working, so that the effect of instant starting can be achieved. In other embodiments, the cross-sectional area of the liquid supply end 621 may be 0.05mm ² The channel length is more than or equal to 1mm, and stable liquid supply can be realized when the liquid supply is started and stopped. In some embodiments, the hydraulic diameter of the liquid supply end 621 is less than or equal to 0.3mm, and stable liquid supply can be realized when the liquid supply is started and stopped. In general, the smaller the cross-sectional area of the liquid delivery end 621, the smaller the channel length of the liquid delivery end 621 that is required to achieve the instant start effect.

In addition, as shown in fig. 3 and fig. 5-8, the resistance liquid supply channel 611 can also be used to control the flow rate of the liquid supplied to the air flow channel 622, so as to realize the quantitative liquid supply of the air flow channel 622 and ensure that the flow rate of the liquid supplied to the air flow channel 622 reaches the design value. In general, the size of the resistive fluid supply channel 611 may be matched to the flow requirements, i.e., the resistive fluid supply channel 611 may produce a resistance that matches the fluid supply force at the design flow rate. Specifically, the negative pressure generated in the air flow channel 622 is hydraulic power, and the hydraulic resistance includes the resistance along the way of the resistance hydraulic channel 611 and the negative pressure in the liquid storage cavity 610. The specific diameter and length of the resistive feed channel 611 is designed by calculating the required on-path resistance of the resistive feed channel 611 at the design flow.

In general, the greater the viscosity of the liquid matrix, the greater the resistance of the liquid matrix to flow through the resistance liquid supply channel 611; the longer the length of the resistance fluid supply channel 611, the greater the resistance within the resistance fluid supply channel 611; the larger the sectional area of the resistance liquid supply passage 611, the smaller the resistance in the resistance liquid supply passage 611; the more tortuous the drag feed channel 611, the greater the drag in the drag feed channel 611. In some embodiments, the viscosity of the liquid matrix is 20cp to 250cp; the overall length of the resistance liquid supply channel 611 is 6mm to 15mm. The liquid supply end section 621 and the main body section 612 are linear channels extending along the transverse direction, and the central axes of the liquid supply end section 621 and the main body section 612 are coincident. The body section 612 is a weak capillary force channel, i.e., the liquid matrix is capable of generating weak capillary forces within the body section 612. The cross-sectional area of the body section 612 is greater than the cross-sectional area of the liquid supply end section 621. In some embodiments, the cross-sectional area of the body section 612 may range from 0.09mm ² ～0.16mm ² . In other embodiments, the body segment 612 may also be a non-linearly extending channel, such as an S-shape or a square wave shape, etc.

In this embodiment, a liquid supply end segment 621 is formed in the nozzle 62 and a body segment 612 is formed in the liquid housing 61. The nozzle 62 has a substantially cylindrical shape, and may be longitudinally penetrating in the liquid storage case 61 and may be coaxially disposed with the liquid storage case 61. The air flow passage 622 extends longitudinally through the nozzle 62 and may be coaxially disposed with the nozzle 62. The liquid supply end 621 extends laterally inward from one side surface of the nozzle 62 to communicate with the air flow passage 622, and the direction of extension of the liquid supply end 621 is perpendicular to the direction of extension of the air flow passage 622. It will be appreciated that in other embodiments, the nozzle 62 may have other shapes, such as oval or square. In other embodiments, the liquid supply end 621 may be formed partially within the nozzle 62 and partially within the liquid housing 61; alternatively, the main body section 612 may be partially formed in the nozzle 62 and partially formed in the reservoir 61.

The air flow passage 622 may include an air supply passage 623 and an atomizing chamber 625. The nebulization chamber 625 is connected to the air supply 40 via an air supply channel 623 and communicates with the reservoir chamber 610 via an air supply end 621. The end surface of the atomizing chamber 625 near the air supply passage 623 forms an atomizing surface 6250, and an atomizing port 6251 is formed in the atomizing surface 6250. The high velocity air flow from the air supply channel 623 is ejected into the nebulization chamber 625 via the nebulization port 6251 and flows at high velocity in the nebulization chamber 625, the high velocity air flow creating a negative pressure in the liquid supply end segment 621 by the bernoulli equation, which negative pressure is conducted to the liquid reservoir 610 to draw the liquid matrix in the liquid reservoir 610 out to the nebulization chamber 625, forming a liquid film on the nebulization surface 6250. Along with the continuous liquid supply process, the liquid film moves to the edge of the hole wall of the atomization hole 6251 to meet the high-speed air flow, is cut and atomized into fine liquid particles by the high-speed air flow, is carried away from the atomization hole 6251 by the air flow, and is sprayed out along with the air flow to complete the atomization process. The atomization mode of the liquid matrix in the atomization cavity 625 is a non-phase-change atomization mode, and the particle size distribution of liquid particles formed after the atomization of the atomization cavity 625 can reach the range of smd=30 μm. Where SMD = total volume of liquid particles/total surface area of liquid particles, represents the average particle size of the liquid particles.

The chamber 625 is a straight cylindrical channel with a wall perpendicular to the atomizing face 6250. In this embodiment, the atomizing chamber 625 is a straight cylindrical channel, the atomizing surface 6250 is concentric with the annular shape, and the inner wall surface of the atomizing surface 6250 defines the atomizing outlet 6251. In other embodiments, the cross-section of the nebulizing chamber 625, nebulizing face 6250, or nebulizing port 6251 may be oval or rectangular, among other non-circular shapes.

The size and shape of the atomizing port 6251 and the atomizing chamber 625 can influence the magnitude of the negative pressure in the atomizing 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 atomizing port 6251, the aperture W1 of the atomizing chamber 625, and the length H of the atomizing chamber 625 may be sized as desired.

Specifically, the aperture D of the atomizing port 6251 is related to the velocity of the gas stream (m/s) exiting the atomizing port 6251, which can affect the particle size of the liquid particles produced. In some embodiments, the aperture D of the atomizing port 6251 can range from 0.2mm to 0.4mm, preferably from 0.22mm to 0.35mm.

The aperture W1 of the nebulization chamber 625 affects the amount of airflow velocity in the nebulization chamber 625 and thus the amount of negative pressure in the nebulization chamber 625 and the liquid supply end 621. This negative pressure may draw liquid matrix from liquid supply end 621 to nebulizing chamber 625. In some embodiments, the aperture W1 of the nebulization chamber 625 may range from 0.7mm to 1.3mm. The length H of the nebulizing chamber 625 may be 0.8mm to 3.0mm. It will be appreciated that in other embodiments, the atomizing port 6251 or the atomizing chamber 625 may also have a non-circular cross-section; when the atomizing port 6251 or the atomizing chamber 625 has a non-circular cross section, the aperture D of the atomizing port 6251 or the aperture W1 of the atomizing chamber 625, respectively, is its equivalent diameter. The term "equivalent diameter" refers to the diameter of a circular hole having equal hydraulic radius as defined as the equivalent diameter of a non-circular hole.

Further, in some embodiments, D ranges from 0.22mm to 0.35mm, H ranges from 1.5mm to 3.0mm, and W1 ranges from 0.7mm to 1.3mm, and the D, H, W range of values enables the nozzle 62 to be advantageous in the manufacturing process.

The end of the liquid supply end 621 that communicates with the nebulizing chamber 625 has a liquid supply opening 6210, the distance L between the liquid supply opening 6210 and the nebulizing surface 6250 being critical to ensure liquid film formation. In the present embodiment, the distance L between the liquid supply port 6210 and the atomizing face 6250 is the perpendicular distance between the center of the liquid supply port 6210 and the atomizing face 6250. In some embodiments, the distance L between the liquid supply port 6210 and the atomizing face 6250 can range from 0.3mm to 0.8mm, with L being preferably from 0.35mm to 0.6mm.

Further, the airflow channel 622 further includes an expansion channel 626, where the expansion channel 626 is communicated with one end of the atomization cavity 625 away from the air supply channel 623, and is used to diffuse and spray out liquid particles generated after atomization in the atomization cavity 625 in a jet form, so as to increase the spray area of the liquid particles. The cross-sectional area of the expansion channel 626 increases gradually from an end closer to the nebulization chamber 625 to an end farther from the nebulization chamber 625. Specifically, in the present embodiment, the expanding channel 626 is a conical channel extending in the longitudinal direction and having a gradually increasing aperture from bottom to top. The atomization angle α of the expansion passage 626 (i.e., the divergence angle of the expansion passage 626) must have a proper range to ensure that the ejected liquid particles have a proper ejection range. In some embodiments, the atomization angle α of the expanding channel 626 may be 30 ° to 70 °. Further, a streamlined, smooth connection, such as by being radiused, may also be used between the expansion channel 626 and the nebulization chamber 625. In other embodiments, the expansion channel 626 may have other shapes such as an elliptical cone shape or a pyramid shape.

The gas supply passage 623 may, in some embodiments, include an acceleration segment 6231, the acceleration segment 6231 having a converging shape with a cross-sectional area that gradually decreases from an end distal to the nebulization chamber 625 to an end proximal to the nebulization chamber 625, thereby enabling the gas stream from the gas source 40 to be accelerated and ejected into the nebulization chamber 625. In the present embodiment, the accelerating section 6231 is a conical channel extending longitudinally and having a gradually decreasing aperture from bottom to top, and the aperture of the upper end of the accelerating section 6231 is smaller than that of the atomizing chamber 625, so that the junction between the accelerating section 6231 and the atomizing chamber 625 forms a circular atomizing surface 6250. It will be appreciated that in other embodiments, the acceleration section 6231 may be other converging shapes such as elliptical cone shapes or pyramid shapes.

Further, the air supply channel 623 also includes a communication section 6232 in communication with the acceleration section 6231, the acceleration section 6231 being connected to the air source 40 through the communication section 6232. The communication section 6232 may be a straight cylindrical passage extending in the longitudinal direction, the upper end of the communication section 6232 being in communication with the acceleration section 6231, the aperture of the communication section 6232 being in accordance with the aperture of the lower end of the acceleration section 6231. In other embodiments, the cross-section of the communication segment 6232 may be elliptical or rectangular, among other non-circular shapes. It will be appreciated that in other embodiments, the air supply channel 623 formed within the nozzle 62 may also include only the acceleration segment 6231; alternatively, the air supply channel 623 may also include only the communication segment 6232 when the airflow rate is sufficient.

The reservoir 61 may include a reservoir body 613 and a reservoir 614 that cooperate with each other. In this embodiment, the reservoir 610 and the body section 612 are both formed within the reservoir body 613. Specifically, the bottom surface of the liquid storage main body 613 is concave upward to form an annular liquid storage cavity 610, and a side cavity wall surface of the liquid storage cavity 610, which is close to the nozzle 62, extends toward the nozzle 62 in the lateral direction to form a main body section 612. It will be appreciated that in other embodiments, the reservoir 610 and/or the body section 612 may be formed within the reservoir 614, or may be formed partially within the reservoir body 613, partially within the reservoir 614.

Further, the liquid storage shell 61 may further be formed with a liquid injection channel 615 in communication with the liquid storage cavity 610, so that the liquid medium in the liquid storage cavity 610 can be injected into the liquid storage cavity 610 again after the liquid medium in the liquid storage cavity 610 is used up. In the present embodiment, a liquid injection passage 615 is formed in the liquid storage main body 613 and extends in the longitudinal direction, and a lower end of the liquid injection passage 615 communicates with the liquid storage chamber 610.

The liquid storage shell 61 is further formed with a receiving hole 6136 and a receiving cavity 6130 communicated with the receiving hole 6136, and the receiving hole 6136 and the receiving cavity 6130 can extend in the longitudinal direction and can be coaxially arranged with the liquid storage shell 61. The receiving hole 6136 is for receiving the nozzle 62, which may extend upward in the longitudinal direction from the lower end surface of the liquid storage case 61. The cavity 6130 may extend longitudinally downward from the upper end surface of the reservoir 61 to communicate with the receiving hole 6136. The cross-sectional area of the cavity 6130 may be greater than the cross-sectional area of the receiving hole 6136, such that a liquid storage surface 6131 is formed at an end of the cavity 6130 near the receiving hole 6136. The liquid storage surface 6131 may further be formed with a plurality of liquid storage grooves 6132 with capillary force, and the liquid storage grooves 6132 can collect and store a certain amount of condensate, so that the condensate accumulated on the liquid storage surface 6131 is prevented from flowing back to the nozzle 62, and thus the air passage in the nozzle 62 is blocked. In some embodiments, the slot width of the reservoir 6132 can be less than or equal to 0.6mm. The upper end surface of the nozzle 62 can be higher than the liquid storage surface 6131 of the circumference, so that condensate on the liquid storage surface 6131 can be prevented from entering the nozzle 62 to block the air passage.

In the present embodiment, the plurality of liquid storage tanks 6132 may include a plurality of first liquid storage tanks 6133 and a plurality of annular second liquid storage tanks 6134. Each first liquid storage groove 6133 can extend along the radial direction of the liquid storage surface 6131, one end of the first liquid storage groove 6133, which is far away from the center of the liquid storage surface 6131, can be communicated with one second liquid storage groove 6134 of the outermost ring, and one end of the first liquid storage groove 6133, which is near to the center of the liquid storage surface 6131, can be communicated with one second liquid storage groove 6134 of the innermost ring. Further, the liquid storage surface 6131 may be designed into a convex shape, for example, it may be a spherical cambered surface or a conical surface, and the height of the liquid storage surface 6131 gradually decreases from the center to the periphery, which is favorable for the condensate near the center of the liquid storage surface 6131 to flow and spread to the periphery, and avoids the condensate near the center of the liquid storage surface 6131 from being directly blown away without atomization. In other embodiments, the liquid storage surface 6131 may also be inclined toward the nozzle 62, i.e., the height of the liquid storage surface 6131 gradually decreases from the periphery to the center, and the upper end surface of the nozzle 62 may also be lower than or flush with the liquid storage surface 6131 of the periphery thereof, so that condensate accumulated on the liquid storage surface 6131 can flow back to the nozzle 62 for re-atomization.

Further, a liquid guiding channel 6135 communicating the liquid storage tanks 6132 with the atomization cavity 625 may be formed in the liquid storage shell 61, so that the negative pressure in the atomization cavity 625 can suck the condensate stored in the liquid storage tanks 6132 back to the atomization cavity 625 for atomization again. Correspondingly, a suck-back channel 624 is also formed in the nozzle 62, which communicates the liquid-guiding channel 6135 with the nebulization chamber 625. The liquid guide channel 6135 and the back suction channel 624 can also be capillary channels, and the aperture or equivalent diameter of the liquid guide channel 6135 and the back suction channel 624 can be less than or equal to 0.4mm, or the sectional area of the liquid guide channel 6135 and the back suction channel 624 is less than or equal to 0.126mm ² . The end of the return channel 624 that communicates with the nebulization chamber 625 has a return opening 6240, the vertical distance between the center of the return opening 6240 and the nebulization surface 6250 can be 0.3mm to 0.8mm. Further, in the present embodiment, the suck-back channel 624 and the liquid supply end 621 are disposed rotationally symmetrically with respect to the central axis of the nozzle 62, so that the mounting direction may not be considered when assembling the nozzle 62.

In addition, the liquid storage shell 61 may further be formed with a ventilation channel 6140 for communicating the liquid storage cavity 610 with the outside, the ventilation channel 6140 may be used for recovering the pressure in the liquid storage cavity 610, and the automatic stable liquid supply to the nozzle 62 is realized by using the cooperation of the negative pressure area of the nozzle 62 and the ventilation channel 6140, so as to solve the problem that the liquid supply cannot be stabilized due to the excessive negative pressure in the liquid storage cavity 610. During the pumping process, the liquid matrix in the liquid storage cavity 610 is reduced to bring air pressure reduction, and the air exchange negative pressure is reduced to the limit and enters the liquid storage cavity 610 through the air exchange bubble of the air exchange channel 6140, so that the negative pressure of the liquid storage cavity 610 is recovered. Typically, the negative pressure of the controllable reservoir 610 ranges from-200 Pa to-700 Pa. It will be appreciated that in other embodiments, other automatic or non-automatic liquid supply modes may be used to achieve quantitative and stable liquid supply to the nozzle 62, for example, a small liquid supply pump (such as a diaphragm pump or peristaltic pump) may be used to pressurize the liquid storage cavity 610 to maintain the stability of the liquid supply, so as to achieve quantitative and stable liquid supply to the nozzle 62; alternatively, the wall of the liquid storage cavity 610 may be flexible and has no air inside, so as to solve the problem that the liquid storage cavity 610 cannot be supplied with liquid due to excessive negative pressure.

The ventilation channel 6140 may include a ventilation groove 6142 formed on an outer surface of the reservoir 61 and a ventilation hole 6141 formed within the reservoir 61. The ventilation hole 6141 is respectively communicated with the liquid storage cavity 610 and the ventilation groove 6142, and is communicated with the outside through the ventilation groove 6142. In the present embodiment, the air exchange groove 6142 may be a straight liquid type air exchange structure and may be formed on the outer surface of the liquid storage seat 614. Specifically, the ventilation groove 6142 may include a plurality of rotation grooves 6143 and a plurality of communication grooves 6144 communicating with the plurality of rotation grooves 6143. Each rotary groove 6143 can be annular and extend along the circumferential direction of the liquid storage seat 614, and the cross-sectional area of each rotary groove 6143 can be in the range of 0.04mm ² ～0.16mm ² The total length of the plurality of rotating grooves 6143 may be 3mm to 12mm. The number of the rotating grooves 6143 may be plural, and the plurality of rotating grooves 6143 may be uniformly spaced along the axial direction of the reservoir 614. Each communication groove 6144 extends along the axial direction of the liquid storage seat 614, and the upper end of each communication groove 6144 is communicated with the uppermost one of the rotary grooves 6143, and the lower end is communicated with the lowermost one of the rotary grooves 6143. The number of the communication grooves 6144 may be plural, and the plurality of communication grooves 6144 may be uniformly arranged at intervals along the circumferential direction of the reservoir 614.

In some embodiments, the reservoir atomization assembly 60 also includes a stationary cap 63. The fixing cover 63 is in a cylindrical shape with an opening at the upper end, and the fixing piece 64 is sleeved outside the liquid storage main body 613 and the liquid storage seat 614 and can be mutually buckled and fixed with the liquid storage main body 613 so as to mutually fix the liquid storage main body 613 and the liquid storage seat 614. Further, the fixing cover 63 may be made of a metal material, which has smaller thermal expansion and cold contraction deformation when the temperature changes, so that the connection and fixation between the components in the liquid storage atomization assembly 60 are more stable and reliable.

The side wall of the fixed cover 63 may be further provided with a vent 630, and the outer surface of the liquid storage seat 614 is further formed with a vent slot 6145 for communicating the plurality of rotating slots 6143 with the vent 630. Specifically, the vent 630 may be formed at the bottom of the sidewall of the fixed cover 63, and the vent slot 6145 may extend from the bottom surface of the sidewall of the reservoir 614 longitudinally upward to communicate with one of the rotating slots 6143 located at the lowest position.

The vent holes 6141 may extend laterally inward from one of the rotational slots 6143 to communicate with the reservoir 610. In this embodiment, the vent hole 6141 extends laterally inward from the uppermost one of the rotary grooves 6143 to communicate with the reservoir 610.

Further, as further shown in fig. 2, the electronic atomizing device 100 further includes a heat generating member 80 accommodated in the housing 10. The heat generating element 80 is electrically connected to the power supply 30, and is capable of generating heat after being energized. The structure and the heating form of the heat generating member 80 are not limited, and for example, it may be a structure of a heat generating net, a heat generating sheet, a heat generating wire, or a heat generating film, and the heating form may be a heating form of resistance conduction heating, infrared radiation heating, electromagnetic induction heating, or composite heating. Also formed within the housing 10 is an output channel 70, and a heat generating member 80 may be disposed within the output channel 70 and above the nozzle 62. The liquid particles ejected from the nozzle 62 strike the heat generating element 80 upward, and are heated by the heat generating element 80 to generate aerosol, and the aerosol is then carried out of the output channel 70 by the airflow for inhalation or inhalation by the user.

In this embodiment, by adopting the manner that the nozzle 62 atomizes the continuously flowing liquid matrix into the liquid particles and then evaporates the liquid particles by the heating element 80, the surface area of the fine liquid particles formed after the nozzle 62 atomizes is greatly expanded, so that the heating and evaporation are easier, on one hand, the conversion efficiency of heat and aerosol can be improved, and on the other hand, the temperature of the evaporation process of the heating element 80 can be reduced, and the low-temperature atomization can be realized. At a lower heating atomization temperature, the liquid matrix mainly completes the physical change process, thereby solving the problem of thermal cracking deterioration of the liquid matrix caused by the atomization of the traditional porous ceramic or porous cotton in a high temperature mode, avoiding the phenomena of burning, carbon deposition, heavy metal volatilization and the like, keeping the special components of different liquid matrixes and essence and spice systems, and finally enabling an inhalator to feel the special taste corresponding to the original liquid matrix. In addition, the heating element 80 is not in contact with the liquid storage cavity 610, the heating element 80 is not soaked in the liquid matrix for a long time, and pollution of the heating element 80 to the liquid matrix is reduced, so that impurity gas in aerosol generated after atomization is reduced.

It will be appreciated that in other embodiments, the liquid particles ejected by the nozzle 62 may also impinge downwardly on the heat generating element 80, i.e., the heat generating element 80 may also be disposed below the nozzle 62; alternatively, the liquid particles ejected by the nozzle 62 may also impinge the heat-generating element 80 laterally, i.e., the heat-generating element 80 is at or substantially at the same level as the nozzle 62. In other embodiments, the electronic atomizing device 100 may not be provided with the heat generating component 80, i.e., the liquid particles atomized by the nozzle 62 may be directly output through the output channel 70 and sucked or inhaled by the user.

Further, a bracket assembly 11 may be further disposed in the housing 10, and the bracket assembly 11 divides the housing 10 into a first receiving space 121 at an upper portion and a second receiving space 122 at a lower portion. The control module 20, the power source 30, and the air source 40 can be accommodated in the second accommodating space 122. The liquid storage atomizing assembly 60 can be accommodated in the first accommodating space 121 and can be supported on the bracket assembly 11. Further, the electronic atomizing device 100 may further include an air flow sensing element 50 disposed in the housing 10 and electrically coupled to the control module 20. The airflow sensing element 50 is received in the bottom of the frame assembly 11 and is capable of sensing airflow changes when the user inhales, which may typically be a negative pressure sensor, such as a microphone. The user suction action creates a negative pressure and the airflow sensing element 50 senses the negative pressure to generate a suction signal that may be transmitted to the control module 20 to control the operation of the air source 40 and/or the heat generating member 80.

Further, the electronic atomizing device 100 may further include a dust cap 90 detachably mounted on the upper end of the housing 10. When the electronic atomizing apparatus 100 is not required to be used, the dust cover 90 may be provided at the upper end of the housing 10 to prevent foreign substances such as dust from entering the output passage 70.

Fig. 9 shows a nozzle 62 in the first alternative of the present invention, which is mainly different from the above embodiment in that a liquid lock groove 6252 is further provided on the atomizing surface 6250 of the nozzle 62 in the present embodiment, and a capillary force can be generated in the liquid lock groove 6252, so that the liquid film can be uniformly distributed and atomized near the atomizing port 6251 even when the nozzle 62 is in an inclined state by using the capillary force, and the influence of gravity on the liquid film distribution is reduced.

Specifically, in the present embodiment, the liquid lock groove 6252 is annular and may be disposed coaxially with the atomizing port 6251, which may be formed by downwardly recessing the atomizing face 6250 in the longitudinal direction, i.e., in the direction perpendicular to the atomizing face 6250. The inner diameter of the sump 6252 is greater than the bore diameter of the atomizing port 6251 and the outer diameter of the sump 6252 is less than the bore diameter of the atomizing chamber 625.

Further, in the present embodiment, a liquid supply end 621 and a liquid supply front 624 are formed in the nozzle 62, the liquid supply end 621 being in communication with the atomizing chamber 625, and the liquid supply front 624 being in communication with an end of the liquid supply end 621 remote from the atomizing chamber 625. The structure of the liquid supply end 621 is similar to that described in the above embodiments, and will not be described again. The liquid supply front section 624 is a weak capillary force channel that forms part of the body section 612 in the above embodiments.

Fig. 10 shows a nozzle 62 in a second alternative of the invention, which differs from the first alternative described above mainly in that the sump 6252 in this embodiment is formed by an upwardly and outwardly concave outer edge of the atomizing face 6250, and that the sump 6252 is in the form of a circumferentially non-closed C-ring. Specifically, the sump 6252 may be formed on a side of the atomizing face 6250 opposite the liquid supply end 621, with the inside diameter of the sump 6252 being consistent with the bore diameter of the atomizing chamber 625, and the outside diameter of the sump 6252 being larger than the bore diameter of the atomizing chamber 625. The arc center angle of the lock fluid groove 6252 may be 180 ° to 350 °.

It will be appreciated that the above technical features may be used in any combination without limitation.

The foregoing examples only illustrate preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A liquid storage atomization assembly, characterized in that a liquid storage cavity (610) for storing a liquid substrate, an airflow channel (622) for circulating high-speed airflow, and a resistance liquid supply channel (611) for communicating the liquid storage cavity (610) with the airflow channel (622) are formed in the liquid storage atomization assembly (60), and the resistance liquid supply channel (611) is configured for controlling the flow rate of liquid supplied from the liquid storage cavity (610) to the airflow channel (622).

2. The liquid storage atomization assembly as set forth in claim 1, wherein the high velocity air flow flowing in the air flow channel (622) creates a negative pressure within the air flow channel (622) that is capable of drawing liquid matrix in the liquid storage chamber (610) out to the air flow channel (622), the liquid matrix entering the air flow channel (622) being atomized by the high velocity air flow flowing in the air flow channel (622).

3. A reservoir atomization assembly according to claim 1, wherein the resistive fluid supply channel (611) comprises a main body section (612) in communication with the reservoir chamber (610) and a fluid supply end section (621) in communication with the main body section (612) and the air flow channel (622), the cross-sectional area of the main body section (612) being larger than the cross-sectional area of the fluid supply end section (621).

4. A reservoir atomization assembly according to claim 3, wherein the body segment (612) is a weak capillary channel and the liquid supply end segment (621) is a capillary channel.

5. A method according to claim 3A liquid storage atomizing assembly, characterized in that the cross-sectional area of the main body section (612) ranges from 0.09mm ² ～0.16mm ² 。

6. A reservoir atomizing assembly according to claim 3, characterized in that the cross-sectional area of the liquid supply end segment (621) is less than 0.08mm ² 。

7. A reservoir atomization assembly according to claim 3, wherein the hydraulic diameter of the liquid supply end segment (621) is less than or equal to 0.3mm.

8. A reservoir atomization assembly according to claim 3, wherein the body segment (612) is a linear or non-linear channel.

9. A reservoir atomizing assembly according to claim 3, characterized in that the liquid supply end segment (621) is a straight channel, and the direction of extension of the liquid supply end segment (621) is perpendicular to the direction of extension of the air flow channel (622).

10. A liquid storage atomizing assembly according to claim 1, characterized in that the extension length of the resistance liquid supply channel (611) is 6 mm-15 mm.

11. A liquid storage atomizing assembly according to claim 1, characterized in that the air flow channel (622) comprises an air flow channel (623) and an atomizing chamber (625), the atomizing chamber (625) is respectively communicated with the air flow channel (623) and the resistance liquid supply channel (611), the atomizing chamber (625) forms an atomizing surface (6250) near one end face of the air flow channel (623), the atomizing surface (6250) is provided with an atomizing port (6251) communicated with the air flow channel (623) and the atomizing chamber (625), a liquid substrate flowing into the atomizing chamber (625) can form a liquid film on the atomizing surface (6250), and the liquid film can be cut by the high-speed air flow to form liquid particles.

12. A reservoir atomization assembly according to claim 11, wherein the atomization face (6250) is further provided with a liquid lock groove (6252) capable of generating capillary forces.

13. A liquid storage atomizing assembly according to claim 12, characterized in that the central axes of the atomizing port (6251), the atomizing face (6250) and the liquid lock tank (6252) are all coincident.

14. The reservoir atomization assembly of claim 11, wherein the airflow channel (622) further includes an expansion channel (626), the expansion channel (626) being in communication with an end of the atomization chamber (625) remote from the air supply channel (623), the expansion channel (626) having a cross-sectional area that increases from an end proximate to the atomization chamber (625) to an end distal from the atomization chamber (625).

15. The reservoir atomization assembly of claim 11, wherein the air supply channel (623) includes an acceleration segment (6231) in communication with the atomization chamber (625), the acceleration segment (6231) having a cross-sectional area that decreases gradually from an end distal to the atomization chamber (625) to an end proximal to the atomization chamber (625).

16. A liquid storage atomizing assembly according to claim 11, characterized in that the atomizing face (6250) is provided with a liquid lock groove (6252), the liquid lock groove (6252) being formed recessed downward in a direction perpendicular to the atomizing face (6250), or the liquid lock groove (6252) being formed recessed upward and outward by an outer edge of the atomizing face (6250).

17. A reservoir atomization assembly according to any of claims 1-16, comprising a reservoir housing (61) and a nozzle (62) at least partially received in the reservoir housing (61), the reservoir chamber (610) being formed within the reservoir housing (61), the air flow channel (622) being formed within the nozzle (62).

18. A reservoir atomization assembly according to claim 17, wherein the reservoir housing (61) is further formed with a venting channel (6140) communicating the reservoir chamber (610) with the outside.

19. The reservoir atomization assembly of claim 18, wherein the reservoir housing (61) includes a reservoir body (613) and a reservoir (614) that cooperate with each other, the reservoir cavity (610) is formed within the reservoir body (613), and the venting channel (6140) includes a venting groove (6142) formed on an outer surface of the reservoir (614).

20. An electronic atomising device comprising a liquid storage atomising assembly as claimed in any one of claims 1 to 19.