Spray nozzle assembly, and electronic atomization device and control method therefor

Abstract

The present application provides a spray nozzle assembly, and an electronic atomization device and a control method therefor. The spray nozzle assembly comprises a base and a nozzle; the base is provided with a liquid inlet channel, a first air inlet channel, and a second air inlet channel; the nozzle is disposed on the base, and is provided with an inner flow channel and an outer flow channel; the liquid inlet channel is communicated with the inner flow channel so as to supply liquid to the inner flow channel; the first air inlet channel is communicated with the outer flow channel so as to supply air to the outer flow channel; the second air inlet channel is communicated with the inner flow channel, and the second air inlet channel is located upstream of the inner flow channel along the liquid inlet path of the inner flow channel. According to the spray nozzle assembly, when atomization is stopped, air can be supplied into the second air inlet channel so as to blow away the residual atomizing medium in the nozzle, thereby avoiding the problem of nozzle blockage caused by the residual atomizing medium in the nozzle.

Description

Nozzle assembly, electronic atomization device and control method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Chinese patent application No. 2023111994467 filed on September 15, 2023, and all of its contents are incorporated herein by reference.

Technical field

[0003] The present invention relates to the technical field of electronic atomization, and in particular to a nozzle assembly, an electronic atomization device and a control method thereof. [Background Technology]

[0004] Electronic atomization devices typically consist of a liquid reservoir and a nozzle assembly. The liquid reservoir stores atomizing medium; the nozzle assembly includes a nozzle that communicates with the liquid reservoir and is used to atomize the atomizing medium to form an aerosol and then eject the aerosol. However, the nozzle of existing nozzle assemblies is prone to clogging.

[0005] [Summary of the invention]

[0006] The present application provides a nozzle assembly, an electronic atomization device and a control method thereof, aiming to solve the problem that the nozzle of the existing nozzle assembly is easily clogged.

[0007] To solve the above technical problems, the present application adopts a technical solution: providing a nozzle assembly. The nozzle assembly includes: a base and a nozzle; the base has a liquid inlet channel, a first air inlet channel, and a second air inlet channel; the nozzle is disposed on the base and has an inner flow channel and an outer flow channel; the liquid inlet channel communicates with the inner flow channel to supply liquid to the inner flow channel; the first air inlet channel communicates with the outer flow channel to supply air to the outer flow channel; the second air inlet channel communicates with the inner flow channel and is located upstream of the inner flow channel along the liquid inlet path of the inner flow channel.

[0008] Wherein, the second air inlet channel is communicated with the liquid inlet channel, and is communicated with the inner flow channel through the liquid inlet channel.

[0009] In which, the liquid inlet channel includes a first liquid inlet pipeline and a second liquid inlet pipeline, the first liquid inlet pipeline is directly connected to the inner flow channel; the second liquid inlet pipeline is connected to the first liquid inlet pipeline, and the extension direction of the second liquid inlet pipeline is inclined at a preset angle to the extension direction of the first liquid inlet pipeline; the second air inlet channel is connected to the second liquid inlet pipeline; the preset angle is greater than 30° and less than or equal to 150°.

[0010] Among them, the extension direction of the first liquid inlet pipeline and the extension direction of the second air inlet channel are respectively parallel to the axial direction of the base, and the extension direction of the second liquid inlet pipeline is perpendicular to the axial direction of the base; the second air inlet channel is connected to the position of the second air inlet channel close to the first air inlet channel.

[0011] The base further has a receiving groove; the nozzle is arranged in the receiving groove and defines a buffer cavity with the receiving groove; the inner flow channel, the liquid inlet channel and the second air inlet channel are respectively connected to the buffer cavity.

[0012] Wherein, the accommodating groove includes a first groove body and a second groove body which are connected to each other; the nozzle part is sleeved in the second groove body through the first groove body, and is spaced apart from the bottom wall of the second groove body to cooperate with the second groove body to form the buffer cavity.

[0013] The extension direction of the liquid inlet channel and the extension direction of the second air inlet channel are respectively perpendicular to the axial direction of the base; the extension direction of the first air inlet channel is parallel to the axial direction of the base.

[0014] To solve the above technical problems, another technical solution adopted in this application is to provide an electronic atomization device. The electronic atomization device includes a nozzle assembly, a liquid storage assembly, and an air supply assembly; wherein the nozzle assembly is the nozzle assembly mentioned above; the liquid storage assembly is connected to the liquid inlet channel, is used to store atomizing medium, and provides the atomizing medium to the nozzle assembly through the liquid inlet channel; the air supply assembly is connected to the first air inlet channel and the second air inlet channel, is used to store gas, and supplies gas to the first air inlet channel and / or the second air inlet channel.

[0015] Wherein, the air supply assembly includes:

[0016] air pump;

[0017] The air supply pipeline includes a main pipeline and a first branch pipeline and a second branch pipeline connected to the main pipeline. The main pipeline is connected to the air pump, the first branch pipeline is connected to the first air intake channel, and the second branch pipeline is connected to the second air intake channel.

[0018] Wherein, the air supply assembly further includes:

[0019] The switch valve is provided in the second branch pipeline and is used to control the connection and closing of the second branch pipeline.

[0020] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a control method for an electronic atomization device, which is the electronic atomization device involved above, and the control method includes: opening a liquid storage component and an air supply component, and allowing the liquid storage component to supply liquid to the inner flow channel of the nozzle through the liquid inlet channel, and allowing the air supply component to supply air to the outer flow channel of the nozzle through the first air inlet channel to atomize the atomizing medium in the nozzle; in response to the liquid storage component stopping the liquid supply, allowing the air supply component to supply air to the inner flow channel of the nozzle through the second air inlet channel to blow out the atomizing medium in the nozzle.

[0021] The method further includes: in response to the air supply time of the air supply component through the second air inlet channel reaching a preset time, closing the air supply component and the switch valve.

[0022] The beneficial effects of the embodiments of the present application are different from those of the prior art: the nozzle assembly provided by the embodiments of the present application includes a base and a nozzle, the base having a liquid inlet channel, a first air inlet channel and a second air inlet channel; the nozzle is arranged on the base and has an inner flow channel and an outer flow channel; the liquid inlet channel is connected to the inner flow channel to supply liquid to the inner flow channel; the first air inlet channel is connected to the outer flow channel to supply air to the outer flow channel; the second air inlet channel is connected to the inner flow channel, and along the liquid inlet path of the inner flow channel, the second air inlet channel is located upstream of the inner flow channel; in this way, the airflow entering the second air inlet channel will flow through the inner flow channel of the nozzle, so that when the nozzle assembly stops atomizing, air can be supplied to the second air inlet channel to blow away the residual atomizing medium in the nozzle, thereby avoiding the problem of nozzle clogging caused by residual atomizing medium in the nozzle.

Brief Description of the Drawings

[0023] FIG1 is a schematic diagram of the overall structure of a nozzle assembly provided in one embodiment of the present application;

[0024] FIG2 is a cross-sectional view taken along line AA of the nozzle assembly shown in FIG1 according to an embodiment of the present application;

[0025] FIG3 is a schematic diagram of the nozzle and the base in FIG2 before assembly;

[0026] FIG4 is a schematic diagram of the overall structure of a nozzle assembly provided by another embodiment of the present application;

[0027] FIG5 is a BB cross-sectional view of the nozzle assembly shown in FIG4 according to an embodiment of the present application;

[0028] FIG6 is a CC cross-sectional view of the nozzle assembly shown in FIG4 according to an embodiment of the present application;

[0029] FIG7 is a simplified structural diagram of an electronic atomization device provided in one embodiment of the present application;

[0030] FIG8 is a flow chart of a control method of an electronic atomization device provided in one embodiment of the present application.

[0031] Explanation of the reference numerals: 10-nozzle assembly; 1-base; 11-liquid inlet channel; 111-first liquid inlet pipeline; 112-second liquid inlet pipeline; 12-first air inlet channel; 13-second air inlet channel; 14-accommodating tank; 141-first tank body; 142-second tank body; 15-buffer chamber; 2-nozzle; 2a-spray portion; 2b-flange portion; 21-inner flow channel; 211-liquid inlet port; 212-spray port; 22-outer flow channel; 20-liquid storage assembly; 30-air supply assembly; 31-air pump; 32-air supply pipeline; 321-main pipeline; 322-first branch pipeline; 323-second branch pipeline; 33-switching valve; 4-protective cover. [Specific implementation method]

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0034] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In related technologies, nozzles in nozzle assemblies are prone to clogging. The inventors of this application have discovered through extensive research that after atomization, residual atomizing medium often remains inside the nozzle of a nozzle assembly. This residual atomizing medium, if left inside the nozzle for an extended period, solidifies, easily causing nozzle clogging and deterioration of the atomizing medium, impacting the user experience.

[0036] To this end, an embodiment of the present application provides a nozzle assembly, which sets an air inlet channel upstream of the inner flow channel of the nozzle, so that after atomization stops, air is supplied to the air inlet channel to blow away the atomizing medium in the nozzle, thereby avoiding the atomizing medium remaining in the nozzle, causing nozzle blockage and deterioration of the atomizing medium, affecting user experience and other problems.

[0037] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0038] Please refer to Figures 1 to 3. Figure 1 is a schematic diagram of the overall structure of a spray head assembly according to one embodiment of the present application; Figure 2 is a cross-sectional view taken along the AA line of the spray head assembly shown in Figure 1 according to one embodiment of the present application; and Figure 3 is a schematic diagram of the nozzle and base in Figure 2 before assembly. In this embodiment, a spray head assembly 10 is provided for atomizing an atomizing medium to form and spray an aerosol. The atomizing medium can be a liquid matrix, such as an oil with an added aroma component, a liquid medicine, or the like.

[0039] As shown in Figure 2, the nozzle assembly 10 includes a base 1 and a nozzle 2. The base 1 has a liquid inlet channel 11, a first air inlet channel 12 and a second air inlet channel 13. The liquid inlet channel 11 is used to connect to the liquid storage assembly 20 (see Figure 7 below) to supply liquid to the nozzle 2. The nozzle 2 is arranged on the base 1 and has an inner flow channel 21 and an outer flow channel 22. The inner flow channel 21 has a relative liquid inlet 211 and a spray port 212; the liquid inlet channel 11 is connected to the liquid inlet 211 of the inner flow channel 21 to supply liquid to the inner flow channel 21. The diameter of the spray port 212 of the inner flow channel 21 is much smaller than the aperture of the liquid inlet 211. Specifically, the liquid inlet 211 and the spray port 212 are arranged relative to each other along the axial direction Y of the base 1. The first air inlet channel 12 is connected to the outer flow channel 22 to provide high-speed gas to the outer flow channel 22. During operation, the outer high-speed gas jet at the spray port 212 shears the liquid flow ejected from the spray port 212, breaking the liquid into fine particles, thereby forming a spray, i.e., an aerosol. The second air inlet channel 13 is connected to the inner flow channel 21 and is located upstream of the inner flow channel 21 along the liquid inlet path of the inner flow channel 21. The phrase "the second air inlet channel 13 is located upstream of the inner flow channel 21" means that the gas or liquid in the second air inlet channel 13 will flow through the inner flow channel 21.

[0040] The above-mentioned method makes the second air inlet channel 13 connected with the inner flow channel 21, and makes the second air inlet channel 13 located upstream of the inner flow channel 21 along the liquid inlet path of the nozzle 2; in this way, the airflow entering the second air inlet channel 13 will flow through the inner flow channel 21, so that when the nozzle 2 assembly stops atomizing, air can be supplied to the second air inlet channel 13 to blow away the residual atomizing medium in the nozzle 2, thereby avoiding problems such as clogging of the nozzle 2 and deterioration of the atomizing medium caused by the residual atomizing medium in the nozzle 2.

[0041] In a specific embodiment, please refer to Figures 2 and 3, the base 1 also has a receiving groove 14, and the nozzle 2 is arranged in the receiving groove 14 of the base 1. The receiving groove 14 can be formed on an end face of the base 1 along its axial direction Y. As shown in Figure 3, the receiving groove 14 can include a first groove body 141 and a second groove body 142. The first groove body 141 and the second groove body 142 can both be hollow cylindrical, and the aperture of the second groove body 142 is smaller than the aperture of the first groove body 141. Specifically, the second groove body 142 is formed on the bottom wall of the first groove body 141 along the axial direction Y of the base 1, and the liquid inlet channel 11 specifically extends to the bottom wall of the second groove body 142 and is connected to the second groove body 142.

[0042] The nozzle 2 includes a spray portion 2a and a flange portion 2b. The spray portion 2a defines an inner flow channel 21, which is partially sheathed within the second trough 142 and abuts the bottom wall of the second trough 142. The flange portion 2b is disposed on the outside of the spray portion 2a and is arranged around the circumference of the spray portion 2a. The flange portion 2b defines multiple outer flow channels 22, which are spaced apart around the circumference of the spray portion 2a. In a specific embodiment, the flange portion 2b abuts the inner wall surface of the first trough 141 and can be spaced apart from the bottom wall of the first trough 141. The airflow within the first air inlet channel 12 flows out through the multiple outer flow channels 22 and shears the atomized medium flowing out of the spray port 212 to atomize and form an aerosol. The nozzle 2 is supplied with liquid through the liquid inlet channel 11 and air through the first air inlet channel 12 to atomize and form an aerosol. For other specific operating principles of aerosol formation, the nozzle 2 is supplied with liquid through the liquid inlet channel 11 and air through the first air inlet channel 12. Please refer to the prior art for other specific working principles.

[0043] In one embodiment, as shown in FIG2 , the second air inlet channel 13 is specifically connected to the liquid inlet channel 11, and is connected to the inner flow channel 21 through the liquid inlet channel 11. Thus, when atomization is stopped, by supplying air to the second air inlet channel 13, the airflow will flow through the liquid inlet channel 11 into the inner flow channel 21 of the nozzle 2, thereby blowing out the atomized medium in the inner flow channel 21, thereby preventing the atomized medium in the inner flow channel 21 from remaining and causing blockage of the nozzle 2, deterioration of the atomized medium, and the like.

[0044] In this embodiment, the liquid inlet channel 11 may include a first liquid inlet line 111 and a second liquid inlet line 112. The first liquid inlet line 111 is directly connected to the inner flow channel 21. The second liquid inlet line 112 is connected to the first liquid inlet line 111, and the extension direction of the second liquid inlet line 112 is inclined at a preset angle α to the extension direction of the first liquid inlet line 111. The second air inlet channel 13 is specifically connected to the second liquid inlet line 112. By arranging the second liquid inlet line 112 and the first liquid inlet line 111 at an angle and connecting the second air inlet channel 13 to the second liquid inlet line 112, the risk of the atomized medium in the liquid inlet channel 11 flowing back into the second air inlet channel 13 and clogging the second air inlet channel 13 can be reduced.

[0045] The preset angle α is greater than 30° and less than or equal to 150°; for example, α is 30°, 60°, 90°, or 120°, etc. In a specific embodiment, as shown in FIG2 , the extension direction of the first liquid inlet pipe 111 is parallel to the axial direction Y of the base 1; the extension direction of the second liquid inlet pipe 112 is perpendicular to the axial direction Y of the base 1; that is, the first liquid inlet pipe 111 and the second liquid inlet pipe 112 are arranged vertically. In this way, the atomized medium in the first liquid inlet pipe 111 can be prevented from entering the second air inlet channel 13; and the atomized medium in the second liquid inlet pipe 112 can be caused to flow toward the first liquid inlet pipe 111 under the action of gravity, further reducing the risk of the second liquid inlet pipe 112 flowing into the second air inlet channel 13.

[0046] In this specific embodiment, the extension direction of the first air inlet channel 12 may also be parallel to the axial direction Y of the base 1 .

[0047] Of course, in a specific embodiment, as shown in FIG2 , the nozzle assembly 10 further includes a protective cover 4 , which is disposed on the side of the nozzle 2 where the spray port 212 is located, exposing the spray port 212. The peripheral edge of the protective cover 4 is clamped between the nozzle 2 and the inner wall surface of the receiving groove 14 to seal the gap between the nozzle 2 and the base 1.

[0048] In another embodiment, referring to Figures 4 to 6, Figure 4 is a schematic diagram of the overall structure of a nozzle assembly provided in another embodiment of the present application; Figure 5 is a BB-direction cross-sectional view of the nozzle assembly shown in Figure 4 provided in one embodiment of the present application; and Figure 6 is a CC-direction cross-sectional view of the nozzle assembly shown in Figure 4 provided in one embodiment of the present application. Another nozzle assembly 10 is provided, which differs from the nozzle assembly 10 provided in the above embodiment in that: the nozzle 2 is accommodated in the receiving groove 14 of the base 1 and defines a buffer chamber 15 with the bottom wall of the receiving groove 14; the inner flow channel 21, the liquid inlet channel 11, and the second air inlet channel 13 are respectively connected to the buffer chamber 15.

[0049] 5 and 6 , the nozzle 2 is partially sleeved within the second trough 142 via the first trough 141 and spaced from the bottom wall of the second trough 142 to form a buffer chamber 15 in cooperation with the bottom wall and side walls of the second trough 142. The liquid inlet 211 faces the buffer chamber 15 and is in direct communication with the buffer chamber 15.

[0050] In this embodiment, the inner flow channel 21, the liquid inlet channel 11, the first air inlet channel 12, and the second air inlet channel 13 are independent of each other. Specifically, referring to Figures 4 to 6, the extension direction of the liquid inlet channel 11 and the extension direction of the second air inlet channel 13 can be perpendicular to the axial direction Y of the base 1; the extension direction of the first air inlet channel 12 can be parallel to the axial direction Y of the base 1. Specifically, the extension directions of the liquid inlet channel 11, the second air inlet channel 13, and the first air inlet channel 12 can be perpendicular to each other.

[0051] The nozzle assembly 10 provided by the above two embodiments, when starting to work, the atomizing medium enters the inner flow channel 21 of the nozzle 2 from the liquid inlet channel 11, and high-speed gas is introduced into the first air inlet channel 12. The high-speed gas and the atomizing medium react at the spray port 212 and are atomized to form an aerosol. When atomization stops, the liquid inlet channel 11 stops supplying liquid, and at this time, there will be residual atomizing medium in the inner flow channel 21 of the nozzle 2; if the residual atomizing medium is not removed, it will easily solidify and cause problems such as blockage of the inner flow channel 21 and atomization deterioration. Therefore, when the nozzle 2 stops atomizing, that is, when the liquid inlet channel 11 stops supplying liquid, gas begins to be introduced into the second air inlet channel 13, and when the gas flows through the inner flow channel 21, it will blow away the residual atomizing medium in the inner flow channel 21, thereby avoiding the problem of blockage and deterioration caused by residual atomizing medium. After the gas fed into the inner flow channel 21 through the second air inlet channel 13 runs in the inner flow channel 21 of the nozzle 2 for a certain period of time, the gas supply to the second air inlet channel 13 is stopped.

[0052] The nozzle assembly 10 provided in this embodiment includes a base 1 and a nozzle 2. The base 1 has a liquid inlet channel 11, a first air inlet channel 12, and a second air inlet channel 13. The nozzle 2 is provided on the base 1 and has an inner flow channel 21 and an outer flow channel 22. The liquid inlet channel 11 is connected to the inner flow channel 21 to supply liquid to the inner flow channel 21; the first air inlet channel 12 is connected to the outer flow channel 22 to supply air to the outer flow channel 22; the second air inlet channel 13 is connected to the inner flow channel 21 and is connected to the liquid inlet channel 11 along the inner flow channel 21. diameter, and the second air inlet channel 13 is located upstream of the inner flow channel 21; in this way, the airflow entering the second air inlet channel 13 will flow through the inner flow channel 21 of the nozzle 2, so that when the nozzle 2 component stops atomizing, air can be supplied to the second air inlet channel 13 to blow away the residual atomizing medium in the nozzle 2, thereby avoiding the problem of the nozzle 2 being blocked and the atomizing medium being deteriorated due to the residual atomizing medium in the nozzle 2; this solution can not only solve the problem of the nozzle 2 being blocked, but also is simple, low-cost and effective.

[0053] In one embodiment, referring to FIG7 , FIG7 is a simplified structural diagram of an electronic atomization device provided in one embodiment of the present application; an electronic atomization device is provided, which is used to atomize an atomization medium to form an aerosol. The electronic atomization device can be specifically used in technical fields such as medical treatment, beauty, health care, and electronic atomization. The electronic atomization device includes a nozzle assembly 10, a liquid storage assembly 20, and an air supply assembly 30. Among them, the nozzle assembly 10 is the nozzle assembly 10 provided in any of the above embodiments, and its specific structure and function can be referred to the above related description.

[0054] The liquid storage component 20 is connected to the liquid inlet channel 11, and is used to store the atomized medium and provide the atomized medium to the nozzle component 10 through the liquid inlet channel 11. Among them, the liquid storage component 20 can actively supply liquid or passively supply liquid. Active liquid supply means that a syringe pump or a piezoelectric pump or the like can be used, and passive liquid supply means that it can be achieved through the Venturi effect of the fluid (gas or liquid). In a specific embodiment, as shown in Figure 7, the liquid storage component 20 can supply liquid by active liquid supply. Specifically, the liquid storage component 20 includes a shell, a push rod and a motor. The shell is used to form a liquid storage tank with a liquid outlet at one end, and the push rod is axially movably arranged in the liquid storage tank from the other end of the liquid storage tank. The motor is connected and cooperated with the push rod to drive the push rod to move in the liquid storage tank to transport the atomized medium in the liquid storage tank to the liquid inlet channel 11.

[0055] The air supply assembly 30 is connected to the first air inlet channel 12 and the second air inlet channel 13, respectively, and is used to supply air to the first air inlet channel 12 and / or the second air inlet channel 13. In one embodiment, the air supply assembly 30 includes an air pump 31 and an air supply pipeline 32. The air pump 31 is used to generate high-speed gas. However, since too low a gas pressure makes it difficult for droplets to break up, and too high a gas pressure can cause noise and miniaturization issues, it is necessary to determine the appropriate air supply pressure of the air pump 31 based on the specific usage scenario.

[0056] The air supply line 32 includes a main line 321, a first branch line 322, and a second branch line 323. The main line 321 is directly connected to the air pump 31. One end of the first branch line 322 is connected to the main line 321 and the other end is connected to the first air intake channel 12, for supplying air to the first air intake channel 12. The second branch line 323 is connected to the main line 321 at one end and to the second air intake channel 13 at the other end, for supplying air to the second air intake channel 13.

[0057] Specifically, as shown in FIG7 , in some embodiments, the air supply assembly 30 further includes an on-off valve 33 disposed in the second branch pipe 323 for controlling the connection and closing of the second branch pipe 323. The on-off valve 33 may be a solenoid valve, and the air supply pipe 32 may be a three-way valve.

[0058] Of course, in other embodiments, the air supply assembly 30 may also include a first air pump, a second air pump, a first air path, and a second air path. The first air path is connected to the first air pump and the first air inlet passage 12, respectively, and the first air pump is used to generate high-speed gas. The first air pump is similar to the above-mentioned air pump. The second air path is connected to the second air pump and the second air inlet passage 13, respectively. The gas pressure provided by the second air pump is not limited, as long as it forms an airflow to blow out the atomized medium in the inner flow channel 21.

[0059] The specific operating principle of the electronic atomization device corresponding to this embodiment is as follows: During normal operation, high-speed gas from the air pump 31 passes through the main pipeline 321 and the first branch pipeline 322 to the first air inlet channel 12, and then flows through the outer flow channel 22 of the nozzle 2 to the spray outlet 212. At this time, the switch valve 33 is closed, and no gas flows through the second branch pipeline 323. The atomizing medium in the liquid storage assembly 20 enters the inner flow channel 21 of the nozzle 2 through the liquid inlet channel 11. The high-speed gas interacts with the atomizing medium at the spray outlet 212, thereby achieving the atomization effect. When atomization needs to be stopped, in response to a signal to stop atomization, the switch valve 33 opens, and the liquid storage assembly 20 stops supplying liquid. At this time, the gas in the air pump 31 enters the second air inlet channel 13 and the inner flow channel 21 of the nozzle 2 in sequence through the second branch pipe 323, and blows the remaining atomized medium in the inner flow channel 21 to the outside of the nozzle 2, thereby eliminating the atomized medium in the inner flow channel 21 of the nozzle 2. This solves various problems such as blockage and deterioration of the atomized medium caused by the atomized medium remaining in the nozzle 2. After the air supply assembly 30 has supplied air through the second air inlet channel 13 for a preset time, the air pump 31 is turned off, and the switch valve 33 is closed. It can be understood that after the air supply time reaches the preset time, the atomized medium remaining in the inner flow channel 21 of the nozzle 2 has been completely blown out of the nozzle 2. The preset time can be specifically determined based on the time required for the airflow provided by the second air inlet channel 13 to blow out all the remaining atomized medium.

[0060] Among them, when the switch valve 33 is opened and the second branch pipe 323 is connected, the first branch pipe 322 does not need to be closed, that is, the first air inlet channel 12 continues to supply air; in this way, the high-speed gas provided by the first air inlet channel 12 can further perform high-speed shear on the atomized medium blown out of the spray port 212 through the air flow in the second air inlet channel 13, so as to atomize this part of the atomized medium to form an aerosol; thereby not only improving the utilization rate of the atomized medium, but also preventing leakage or the user from directly contacting the un-atomized liquid atomized medium, which can improve the user experience.

[0061] It can be understood that the above-mentioned first branch pipe 322 and second branch pipe 323 are connected by only setting the switch valve 33 on the second branch pipe 323; the connection and closing of the second branch pipe 323 can be controlled by adjusting the switch valve 33, so that during normal atomization operation, the second branch pipe 323 can be closed to prevent the airflow in the second branch pipe 323 from affecting the liquid inlet process of the liquid inlet channel 11; at the same time, after the atomization is completed, the switch valve 33 can be opened again to connect the second branch pipe 323, thereby supplying air to the second air inlet channel 13 to blow out the residual atomizing medium in the inner flow channel 21 of the nozzle 2. However, the switch valve 33 is no longer provided in the first branch pipe 322. After the atomization stops, the first branch pipe 322 can continue to supply air to the first air inlet channel 12 to atomize the residual atomizing medium blown out. After all the residual atomizing medium is blown out, the continued air supply to the first branch pipe 322 can be stopped by turning off the air pump 31, thereby saving the number of switch valves 33 and reducing costs.

[0062] The electronic atomization device provided in this embodiment includes a nozzle assembly 10, a liquid storage assembly 20 and an air supply assembly 30; the liquid storage assembly 20 is connected to the liquid inlet channel 11, for storing the atomizing medium, and providing the atomizing medium to the nozzle assembly 10 through the liquid inlet channel 11; the air supply assembly 30 is connected to the first air inlet channel 12 and the second air inlet channel 13 respectively, for supplying air to the first air inlet channel 12 and / or the second air inlet channel 13. The nozzle assembly 10 includes a base 1 and a nozzle 2, the base 1 having a liquid inlet channel 11, a first air inlet channel 12 and a second air inlet channel 13; the nozzle 2 is arranged on the base 1 and has an inner flow channel 21 and an outer flow channel 22; the liquid inlet channel 11 is connected to the inner flow channel 21 to supply liquid to the inner flow channel 21; the first air inlet channel 12 is connected to the outer flow channel 22 to supply air to the outer flow channel 22; the second air inlet channel 13 is connected to the inner flow channel 21, and along the liquid inlet path of the inner flow channel 21, the second air inlet channel 13 is located upstream of the inner flow channel 21; in this way, the airflow entering the second air inlet channel 13 will flow through the inner flow channel 21 of the nozzle 2, so that when the nozzle 2 assembly stops atomizing, air can be supplied to the second air inlet channel 13 to blow away the residual atomizing medium in the nozzle 2, thereby avoiding the problem of the nozzle 2 being blocked due to the residual atomizing medium in the nozzle 2.

[0063] See Figure 8, which is a flow chart of a control method for an electronic atomization device provided in one embodiment of the present application. In one embodiment, a control method for an electronic atomization device is provided. The electronic atomization device is the electronic atomization device involved in the above embodiment. Its specific structure and function can be found in the above related description. The method includes:

[0064] Step S1: Open the liquid storage component and the air supply component, and make the liquid storage component supply liquid to the inner flow channel of the nozzle through the liquid inlet channel, and make the air supply component supply air to the outer flow channel of the nozzle through the first air inlet channel to atomize the atomizing medium in the nozzle.

[0065] Specifically, the liquid storage component 20 adopts an active liquid supply method, for details, please refer to the above. When performing atomization, the motor is turned on to drive the atomized medium in the liquid storage tank to flow into the liquid inlet channel 11 of the nozzle assembly 10, and supply liquid to the inner flow channel 21 of the nozzle 2. The air pump 31 of the air supply component 30 is turned on. Since the first branch pipe 322 is in a normally open state, the switch valve 33 on the second branch pipe 323 is in a closed state at this time. Therefore, after the air pump 31 is turned on, the air pump 31 supplies air to the first air inlet channel 12 through the first branch pipe 322. The high-speed gas generated by the air pump 31 passes through the first branch pipe 322, the first air inlet channel 12, and the outer flow channel 22 in turn to reach the spray port 212, so as to perform high-speed shearing on the atomized medium sprayed from the spray port 212, thereby atomizing and forming an aerosol.

[0066] Step S2: in response to the liquid storage component stopping the liquid supply, the air supply component supplies air to the inner flow channel of the nozzle through the second air inlet channel to blow out the atomized medium in the nozzle.

[0067] When atomization stops, the liquid storage component 20 stops supplying liquid; some atomizing medium remains in the inner flow channel 21 of the nozzle 2. At this time, the switch valve 33 is opened to connect the second branch pipe 323, and the high-speed gas generated by the air pump 31 flows out through the first branch pipe 322 and the second branch pipe 323; wherein, the gas in the second branch pipe 323 enters the inner flow channel 21 of the nozzle 2 through the second air inlet channel 13 in turn, thereby blowing out the atomizing medium remaining in the inner flow channel 21, avoiding problems such as clogging of the inner flow channel 21 of the nozzle 2 and deterioration of the atomizing medium caused by the residual atomizing medium. At the same time, the gas in the first branch pipe 322 can flow out through the first air inlet channel 12 and the outer flow channel 22 to atomize the blown-out residual atomizing medium, thereby improving the utilization rate of the atomizing medium, and preventing leakage or the user from directly contacting the liquid un-atomized atomizing medium, which can improve the user experience.

[0068] In the specific implementation process, after step S2, the following steps are further included:

[0069] Step S3 : in response to the air supply time of the air supply assembly 30 through the second air inlet passage 13 reaching a preset time, closing the air supply assembly 30 and the switch valve 33 .

[0070] When the air supply time of the air supply assembly 30 through the second air inlet channel 13 reaches a preset time, the atomized medium remaining in the nozzle 2 is completely blown out of the nozzle 2 or more than 95% of the atomized medium is blown out of the nozzle 2. The preset time can be determined based on the time required for the airflow provided by the second air inlet channel 13 to blow out all the remaining atomized medium.

[0071] Specifically, in response to the air supply time of the air supply assembly 30 through the second air inlet passage 13 reaching a preset time, the air pump 31 and the on-off valve 33 are turned off, thereby closing the second branch pipe 323. It will be understood that after the residual atomized medium is blown out, since the air pump 31 has been turned off, no high-speed airflow will flow out even if the first branch pipe 322 remains connected. Therefore, there is no need to provide an on-off valve on the first branch pipe 322 to control the connection or closure of the first branch pipe 322, saving costs.

[0072] The control method of the electronic atomization device provided in this embodiment is to open the liquid storage component 20 and the air supply component 30 during normal atomization, and enable the liquid storage component 20 to supply liquid to the inner flow channel 21 of the nozzle 2 through the liquid inlet channel 11, and enable the air supply component 30 to supply air to the outer flow channel 22 of the nozzle 2 through the first air inlet channel 12, so as to atomize the atomizing medium in the nozzle assembly 10; and in response to the liquid storage component 20 stopping the liquid supply, that is, stopping the atomization, enable the air supply component 30 to supply air through the second air inlet channel 13 to blow out the atomizing medium in the nozzle assembly 10; effectively avoiding the problems of residual atomizing medium in the nozzle 2 causing the nozzle 2 to be blocked, the atomizing medium to be deteriorated, and the like.

[0073] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A nozzle assembly, wherein: include: A base having a liquid inlet channel, a first air inlet channel, and a second air inlet channel; A nozzle, disposed on the base, and having an inner flow channel and an outer flow channel; The liquid inlet channel is connected to the inner flow channel to supply liquid to the inner flow channel; the first air inlet channel is connected to the outer flow channel to supply air to the outer flow channel; the second air inlet channel is connected to the inner flow channel, and along the liquid inlet path of the inner flow channel, the second air inlet channel is located upstream of the inner flow channel.

2. The spray head assembly according to claim 1, wherein: The second air inlet channel is in communication with the liquid inlet channel, and is in communication with the inner flow channel through the liquid inlet channel.

3. The spray head assembly according to claim 2, wherein: The liquid inlet channel includes a first liquid inlet pipeline and a second liquid inlet pipeline, the first liquid inlet pipeline is directly connected to the inner flow channel; the second liquid inlet pipeline is connected to the first liquid inlet pipeline, and the extension direction of the second liquid inlet pipeline is inclined at a preset angle to the extension direction of the first liquid inlet pipeline; the second air inlet channel is connected to the second liquid inlet pipeline; the preset angle is greater than 30° and less than or equal to 150°.

4. The spray head assembly according to claim 3, wherein: The extension direction of the first liquid inlet pipeline and the extension direction of the second air inlet channel are respectively parallel to the axial direction of the base, and the extension direction of the second liquid inlet pipeline is perpendicular to the axial direction of the base; the second air inlet channel is connected to the position of the second air inlet channel close to the first air inlet channel.

5. The spray head assembly according to claim 1, wherein: The base also has a receiving groove; the nozzle is arranged in the receiving groove and defines a buffer cavity with the receiving groove; the inner flow channel, the liquid inlet channel and the second air inlet channel are respectively connected to the buffer cavity.

6. The spray head assembly according to claim 5, wherein: The receiving groove comprises a first groove body and a second groove body which are interconnected; the nozzle part The first slot body is sleeved in the second slot body and spaced apart from the bottom wall of the second slot body, so as to cooperate with the second slot body to form the buffer cavity.

7. The nozzle assembly according to claim 5 or 6, wherein: The extension direction of the liquid inlet channel and the extension direction of the second air inlet channel are respectively perpendicular to the axial direction of the base; the extension direction of the first air inlet channel is parallel to the axial direction of the base.

8. An electronic atomization device, wherein: include: A nozzle assembly, which is a nozzle assembly as claimed in any one of claims 1 to 7; A liquid storage assembly, connected to the liquid inlet channel, for storing atomized medium and providing the atomized medium to the nozzle assembly through the liquid inlet channel; An air supply component is communicated with the first air intake channel and the second air intake channel respectively, and is used to supply air to the first air intake channel and / or the second air intake channel.

9. The electronic atomization device according to claim 8, wherein: The gas supply assembly comprises: air pump; The air supply pipeline includes a main pipeline and a first branch pipeline and a second branch pipeline connected to the main pipeline, the main pipeline is connected to the air pump, the first branch pipeline is connected to the first air intake channel, and the second branch pipeline is connected to the second air intake channel.

10. The electronic atomization device according to claim 9, wherein: The air supply assembly also includes: The switch valve is arranged in the second branch pipeline and is used to control the connection and closing of the second branch pipeline.

11. A method for controlling an electronic atomization device, wherein: The electronic atomization device is the electronic atomization device according to any one of claims 8 to 10, and the control method comprises: Opening the liquid storage component and the air supply component, and allowing the liquid storage component to supply liquid to the inner flow channel of the nozzle through the liquid inlet channel, and allowing the air supply component to supply air to the outer flow channel of the nozzle through the first air inlet channel, so as to atomize the atomizing medium in the nozzle; In response to the liquid storage component stopping the liquid supply, the air supply component supplies air to the inner flow channel of the nozzle through the second air inlet channel to blow out the atomized medium in the nozzle.

12. The control method of the electronic atomization device according to claim 11, wherein: Among them, it also includes: In response to the air supply time of the air supply component through the second air inlet passage reaching a preset time, the air supply component and the switch valve are closed.

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