CN120169578A - Nozzle and atomizing device - Google Patents

Abstract

The application provides a nozzle and an atomizing device. The nozzle is provided with a flow guiding cavity, the side wall of the flow guiding cavity is provided with an inlet and an outlet, and atomized medium enters the nozzle from the inlet and is ejected from the outlet through the flow guiding cavity. The flow guide cavity is communicated with the constraint flow channel through the collision flow channel, and at least part of collision areas of the collision flow channels are positioned in the constraint flow channel. So, atomizing medium is through a plurality of clash runners and at least part when the constraint runner collides, and the constraint runner can restrict the deformation of atomizing medium clash to reduce the atomizing angle, reduce atomizing medium striking other structures and appear atomizing medium and detain the risk, improved atomizing medium's utilization ratio, reduced the influence to atomizing effect.

Description

Nozzle and atomizing device

Technical Field

The invention relates to the technical field of soft atomization, in particular to a nozzle and an atomization device.

Background

Soft nebulization techniques do not require the use of propellants, and are lighter in spray force, softer in velocity, and smaller in nebulization particle size than conventional aerosol or dry powder inhalers, which results in aerosols formed by nebulization that are easier to reach the lungs of the user.

The high-pressure micro-flow nozzle is a key component for realizing soft atomization, however, the angle of the atomization angle of the existing high-pressure micro-flow nozzle is larger, atomized media are easy to collide with other structures of the nozzle outlet, so that the atomized media are detained, and the utilization rate of the atomized media is lower.

Disclosure of Invention

The application provides a nozzle and an atomizing device, and aims to solve the problems that in the related art, the angle of an atomizing angle of the nozzle is large, atomized media are easy to strike other structures of an outlet of the nozzle to cause retention of the atomized media, and the utilization rate of the atomized media is low.

In order to solve the technical problems, the application adopts the technical scheme that the nozzle is provided with a flow guide cavity, the side wall of the flow guide cavity is provided with an inlet and an outlet, the outlet comprises a constraint flow passage and a plurality of clash flow passages, the flow guide cavity is communicated with the constraint flow passage through the clash flow passages, and at least part of clash areas of the clash flow passages are positioned in the constraint flow passages.

In one embodiment, all of the impingement areas of the plurality of impingement runners are located within the constraint runner.

In an embodiment, a distance between the outermost collision areas of the plurality of collision runners and the liquid outlet port of the constraint runner away from the collision runners is less than 1.5 μm.

In an embodiment, the plurality of clash runners have the same clash zone, and the clash zone is tangential to the liquid outlet port of the restriction runner remote from the clash runner.

In one embodiment, the restriction flow channels are single flow channels, the number of the collision flow channels is two, the two collision flow channels are both linear, the liquid outlet ports of the two collision flow channels are flush, and the extension lines of the outer side surfaces of the two collision flow channels are converged at the liquid outlet port of the restriction flow channel.

In one embodiment, the depth of the restricting flow channel is greater than or equal to the depth of the impinging flow channel.

In an embodiment, the width of the restricting flow channel is greater than or equal to the distance between the outer side surfaces of the liquid outlet ports of the two collision flow channels.

In one embodiment, the restricting flow channels are single flow channels, the number of the clash flow channels is two, and the width of the restricting flow channels is more than or equal to two times of the distance between the outer side surfaces of the liquid outlet ports of the two clash flow channels.

In one embodiment, the width of the collision flow channel is more than or equal to1 μm and less than or equal to 30 μm, and/or the depth of the flow guiding cavity, the inlet and the outlet is more than or equal to 3 μm and less than or equal to 100 μm.

In order to solve the technical problem, the second technical scheme provided by the application is that an atomization device comprises the nozzle.

The application has the beneficial effects that the nozzle is provided with the diversion cavity, the side wall of the diversion cavity is provided with the inlet and the outlet, and the atomization medium enters the nozzle from the inlet and is sprayed out from the outlet through the diversion cavity. The flow guide cavity is communicated with the constraint flow channel through the collision flow channel, and at least part of collision areas of the collision flow channels are positioned in the constraint flow channel. So, atomizing medium is through a plurality of clash runners and at least part when the constraint runner collides, and the deformation when the constraint runner can retrain atomizing medium clash to reduce the atomizing angle, reduce atomizing medium striking atomizing device's other structures and appear atomizing medium and detain the risk on atomizing device, improved atomizing medium's utilization ratio, reduced the influence to atomizing effect.

Drawings

FIG. 1 is a schematic view of the overall structure of a nozzle according to an embodiment of the present application;

FIG. 2 is a schematic illustration showing a nozzle according to an embodiment of the present application;

FIG. 3 is a perspective view of a nozzle along the Y direction provided by an embodiment of the present application;

fig. 4 is an enlarged view at P in fig. 2;

FIG. 5 is a schematic cross-sectional view of a nozzle at a fluid outlet provided in accordance with an embodiment of the application;

FIG. 6 is a schematic view of a relationship between a collision area and a restriction flow path according to another embodiment of the present application;

FIG. 7 is a schematic transverse cross-sectional view of a nozzle at a fluid outlet provided in accordance with another embodiment of the application;

FIG. 8 is a simulation of the aerosol morphology at 24MPa of hydraulic pressure at the inlet of the first experimental part;

FIG. 9 is a simulation of the aerosol morphology at 24MPa of hydraulic pressure at the inlet of the second test piece.

Reference numerals illustrate:

2-nozzle, 21-first substrate, 211-groove structure, 2111-diversion trench, 2112-collision trench, 2113-confinement trench, 2114-notch, 22-second substrate, 23-diversion cavity, 24-inlet, 25-outlet, 26-collision flow channel, 261-collision area, 27-confinement flow channel.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," "third," and the like in this disclosure 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", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, rear) in embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular pose (as shown in the drawings), and if the particular pose changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The atomization effect of the existing high-pressure nozzle is not ideal. For example, unidirectional flow nozzles have difficulty meeting the median particle size requirements for inhaled administration of less than 5 microns. Although the high-pressure micro-flow nozzle structure (soft atomizing high-pressure nozzle) in some technologies can meet the requirement of inhalation type drug administration, the atomizing angle is continuously increased along with the increase of the atomizing flow. And the excessive atomizing angle can cause atomized medium to impact the outlet structure of the nozzle and interfere with other structures of the atomizing device, which are close to the outlet structure of the nozzle, so that residues of the atomized medium in the atomizing process are caused, and atomized medium waste and utilization rate of the atomized medium are reduced. Moreover, high atomizing flows, nozzles tend to require higher pressures. The atomizing angle refers to the angle of atomizing of the liquid nozzle, wherein the atomized liquid sprayed by the nozzle forms a cone which expands around the axis of the nozzle and the cone apex angle is the angle of atomizing of the liquid nozzle.

Based on the above, the embodiment of the application provides the nozzle, which effectively improves the atomization effect of the nozzle, reduces the atomization angle and reduces the residue of an atomization medium.

The application provides an atomization device. The atomizing device is used for atomizing provided atomizing medium to form aerosol for sucking by a user. The atomization device can be used in the fields of medical atomization, leisure sucking, beauty atomization and the like. The nebulizing medium may comprise a liquid base such as oils, liquid medicines, etc. to which the fragrance is added.

The device comprises a nozzle 2, the nozzle 2 forming an aerosol by means of a stream of atomizing medium provided by an atomizing device that generates a stream of liquid. The specific structure and function of the nozzle 2 can be seen from the description of the nozzle 2 in the following embodiments.

Fig. 1 to 3 are schematic views of an overall structure of a nozzle according to an embodiment of the present application, fig. 2 is a schematic exploded view of a nozzle according to an embodiment of the present application, and fig. 3 is a perspective view of a nozzle according to an embodiment of the present application along a Y direction. An embodiment of the present application provides a nozzle 2, where the nozzle 2 may be a cuboid, a cube, a cylinder, a cone, etc. The nozzle 2 has a flow guiding chamber 23. The flow-directing chamber 23 has an inlet 24 and an outlet 25. The flow-guiding chamber 23 mainly serves to connect the inlet 24 with the outlet 25. When the nozzle 2 is in operation, the atomizing medium flows from the inlet 24 into the flow chamber 23 and out of the flow chamber 23 via the outlet 25.

In one embodiment, as in fig. 2, the nozzle 2 includes a first substrate 21 and a second substrate 22. The first substrate 21 and the second substrate 22 each have a mounting side that can be connected to each other to mount the first substrate 21 and the second substrate 22 together. At least one of the first substrate 21 and the second substrate 22 has a groove structure 211. The first substrate 21 and the second substrate 22 cooperate to form a flow directing chamber 23, an inlet 24, and an outlet 25. In some embodiments, the first substrate 21 and the second substrate 22 may be ceramic, glass, or the like.

Specifically, in one embodiment, the groove structure 211 is formed on a surface of the first substrate 21 facing the second substrate 22, and the groove structure 211 includes the diversion trench 2111. The diversion trench 2111 is recessed downward by a depth toward a direction away from the second substrate 22. In some embodiments, the depth of the flow guide grooves 2111 is less than the thickness of the first substrate 21. In other embodiments, the depth of the channels 2111 may be equal to the thickness of the first substrate 21, i.e., the channels 2111 extend through the first substrate 21, in which case the nozzle 2 may further include a third substrate, the second and third substrates 22 and 2111 being closed off from both sides of the first substrate 21, respectively.

Referring to fig. 2 to 4, fig. 4 is an enlarged view at P in fig. 2. The channel 2111 has opposite first and second sidewalls, the first sidewall having a restraint channel 2113 and a plurality of collision channels 2112, and the second sidewall having a plurality of notches 2114. The diversion trench 2111 communicates with the constraint trench 2113 through the collision trench 2112, and the constraint trench 2113 extends away from the port of the collision trench 2112 to the edge of the first substrate 21. The second substrate 22 covers the diversion trench 2111, the collision groove 2112, the restriction groove 2113, and the notch 2114, respectively, thereby forming the diversion cavity 23, the collision flow passage 26, the restriction flow passage 27, and the inlet 24, respectively. The flow guiding cavity 23 is communicated with the constraint flow channel 27 through the collision flow channel 26, and the flow guiding cavity 23 is communicated with the collision flow channel 26 and the inlet 24. The nozzle 2 is used as a liquid atomizer and accordingly the nozzle 2 comprises a plurality of inlets 24, each inlet 24 being mutually spaced by a separation column therebetween. The separation column enables the atomized medium flowing into the diversion cavity 23 to form a plurality of beams so as to play a certain role in blocking prevention and filtration.

In some embodiments, downstream of the inlet 24, a one-stage or multi-stage filter structure (not shown) such as dense raised small cylinders or the like may also be provided in the diversion chamber 23. The filter structure on the one hand helps to reduce the flow of foreign particles in the nebulized medium further towards the outlet 25 to block the outlet 25, and on the other hand also helps to further divide the flow in the flow-guiding chamber 23. Downstream of the inlet 24 refers here to the other position on the nozzle 2 along the flow path of the nebulized medium in the nozzle 2, which is passed after the nebulized medium has passed through the inlet 24.

With reference to fig. 3 and 5, fig. 5 is a schematic cross-sectional view of a nozzle at a fluid outlet according to an embodiment of the present application. The outlet 25 comprises a restricting flow passage 27 and a plurality of clash flow passages 26, the diversion cavity 23 is communicated with the restricting flow passage 27 through the clash flow passages 26, and at least part of clash areas 261 of the plurality of clash flow passages 26 are positioned in the restricting flow passage 27. In this way, the atomized medium reaches the flow-guiding chamber 23 of the nozzle 2 after passing through the inlet 24. The multiple impingement flow channels 26 of the outlet 25 divide the atomized medium into multiple column jets, each of which passes through the impingement zone 261 and impinges such that the jet breaks up into droplets. Through the mode of clashing, be favorable to further improving atomization effect, reduce median particle diameter. Meanwhile, the jet flow colliding in the collision zone 261 through the collision flow channel 26 at least partially interferes with the side wall of the restriction flow channel 27 in the restriction flow channel 27, so that when the jet flow collision is restricted by the side wall of the restriction flow channel 27, the plume shape of the aerosol formed by atomizing the atomizing medium deforms in the direction perpendicular to the plane of the collision zone 261, the atomizing angle theta is reduced, the risk of stagnation of the atomizing medium caused by the impact of the atomizing medium on other structures of the atomizing device is reduced, the utilization rate of the atomizing medium is improved, and the atomizing effect is ensured. The plane of the impingement zone 261, i.e., the plane in which the nozzle 2 shown in fig. 1, y=0, lies. The flow-guiding chamber 23 should be as wide as possible, the width of the flow-guiding chamber 23 being larger than the width of the restriction flow channel 27. In this way, the space of the flow guiding chamber 23 accommodates enough atomizing medium to form a pressure collision in the collision flow channel 26 of the outlet 25. The constriction is again at an angle of large angle near the outlet 25, so that the constriction will be shorter, which is advantageous for reducing the flow resistance.

In some embodiments, as in FIG. 5, all of the impingement zone 261 of the plurality of impingement runners 26 is located within the constraint runner 27. In this way, the restricting flow passage 27 can restrict the deformation of the plume form of the aerosol formed by atomizing the atomizing medium in the direction perpendicular to the collision surface (y=0) during collision, so as to reduce the atomizing angle θ and reduce the risk of the aerosol striking other structures at the outlet of the atomizing device to cause retention of the atomizing medium.

In some embodiments, referring to fig. 5, the distance L0 between the outermost impingement region 261 of the plurality of impingement runners 26 and the restriction runner 27 away from the exit port of the impingement runner 26 is less than 1.5 μm. In this way, the restricting flow passage 27 can be ensured not to block the mist outlet path of the nozzle 2, the risk that the aerosol is emitted to the side wall of the restricting flow passage 27 is reduced, and the normal ejection of the aerosol is facilitated. It will be appreciated that each flow passage has at least two opposite ports, and that the port from which the nebulized medium flows into the corresponding flow passage and out of the flow passage through the other port, and the port from which the nebulized medium flows out of the current flow passage is referred to as the outlet port.

In some embodiments, as shown in fig. 6, fig. 6 is a schematic diagram illustrating a positional relationship between a collision area and a restriction flow channel according to another embodiment of the present application. The plurality of clash runners 26 have the same clash zone 261, and the clash zone 261 is tangential to the restriction runner 27 away from the liquid outlet port of the clash runner 26. I.e. the plurality of clash runners 26 clash in the same area, which is located in the restricted runner 27, and which may be tangential to the exit port of the restricted runner 27 remote from the clash runner 26 on the side facing away from the flow guiding chamber 23.

In some embodiments, as shown in fig. 6, the restricting flow channel 27 is a single flow channel, that is, the number of restricting flow channels 27 is one, the number of clash flow channels 26 is two, the extending paths of the two clash flow channels 26 are both linear, the liquid outlet ports of the two clash flow channels 26 are level, and the extension lines of the outer sides of the two clash flow channels 26 are converged at the liquid outlet port of the restricting flow channel 27. In this way, the jet flow passing through the collision flow channel 26 collides with the liquid outlet of the constraint flow channel 27, when the side wall of the constraint flow channel 27 interferes with the jet flow collision moment, the plume shape of the aerosol formed by atomizing the atomized medium deforms in the direction perpendicular to the plane of the collision zone 261, so that the atomizing angle theta is reduced, the risk of stagnation of the atomized medium caused by the impact of the atomized medium on other structures of the atomizing device is reduced, the utilization rate of the atomized medium is improved, and the atomizing effect is ensured. The outlet port of the impinging runner 26 refers to a port of an end of the impinging runner 26 facing away from the flow guiding cavity 23. The outlet port of the restriction flow channel 27 refers to a port of an end of the restriction flow channel 27 facing away from the impinging flow channel 26, which corresponds to an edge of the first substrate 21.

In some embodiments, referring back to fig. 4, the depth H1 of the restricted flow channel 27 is greater than or equal to the depth H2 of the impinging flow channel 26. Preferably, the depth H1 of the restricting flow channel 27 is identical to the depth H2 of the impinging flow channel 26, so that the restricting flow channel 27 and the impinging flow channel 26 can be formed by the same process and the same mask, and the production process cost and the production steps of the nozzle 2 are reduced. And meanwhile, the jet flow after colliding with the restriction flow passage 27 is easier to interfere with the side wall of the restriction flow passage 27 so as to reduce the atomization angle theta.

In some embodiments, as shown in fig. 7, fig. 7 is a schematic transverse cross-sectional view of a nozzle at a fluid outlet provided in another embodiment of the present application. The width W1 of the restricting flow passage 27 is equal to or larger than the distance W2 between the outer side surfaces of the liquid outlet ports of the two collision flow passages 26 at the outermost sides. In this way, the interference between the jet flow and the side wall of the nozzle 2 on the y=0 plane can be reduced, the influence on the atomization effect is reduced, and the atomization effect is ensured. In some embodiments, the spacing W2 of the outer sides of the outlet ports of the two impingement runners 26 may be 20 μm to 80 μm, e.g., W2 may be 20 μm, 25 μm, 30 μm, 50 μm, 60 μm, 80 μm, etc. The angle θ1 between the liquid outlet directions of the two impinging passages 26 may be 60 to 150 degrees, preferably 90 degrees. Similarly, a desirable range of the length L of the restriction flow path 27, i.e., l=l0+ (0.5×w2)/tan (0.5×θ1), can be obtained.

In some embodiments, the restriction flow channels 27 are single flow channels, the number of the clash flow channels 26 is two, and the width of the restriction flow channels 27 is equal to or more than twice the distance between the outer side surfaces of the liquid outlet ports of the two clash flow channels 26.

As mentioned above, the nebulizing medium enters via the inlet 24 via the hydraulic pressure, and after flowing through the entire flow-guiding chamber 23, the liquid flows out via the outlet 25. In practice, depending on the pressure exerted on the nebulized medium, the nebulized medium is ejected via the outlet 25 at a certain ejection speed. The atomized media in the diversion cavity 23 respectively form multi-column jet flows through a plurality of collision flow channels 26 to be ejected out of the diversion cavity 23 and are converged in the collision area 261. The multi-column jet collides in the collision zone 261, and the breaking of the liquid column to form aerosol is realized by utilizing the kinetic energy of the jet. Wherein, by providing the restricting flow passage 27 and the plurality of clash flow passages 26 at the outlet 25 of the nozzle 2, at least part of the clash zone 261 of the plurality of clash flow passages 26 is located in the restricting flow passage 27. So, atomizing medium is through a plurality of clash runners 26 and at least partly when restraint runner 27 clash, the plume form of the aerosol that atomizing medium atomizing formed can interfere with restraint runner 27's lateral wall, restraint runner 27's lateral wall can restrict the atomizing medium and clash in the direction of perpendicular to clash district 261 planar direction to reduce atomizing angle θ, reduced aerosol striking atomizing device's other structures and appear atomizing medium and detain the risk on atomizing device, improved atomizing medium's utilization ratio, guaranteed atomizing effect.

In some embodiments, the restricted flow channel 27 is of the convergent, divergent or parallel type. In practical applications, the angle of the atomizing jet can be adjusted by changing the shape of the restricting flow channel 27 to achieve the desired application effect.

In some embodiments, as in FIG. 7, the width W3 of the impingement channel 26 is 1 μm or more and 30 μm or less, e.g., W3 may be 1 μm, 5 μm, 10 μm, 15 μm, 20 μm, 30 μm, etc. In this way, the atomized medium flowing out of the collision flow channel 26 can be guaranteed to have certain kinetic energy, so that atomization can be realized through mutual collision, and the risk of overlarge atomization angle theta caused by larger atomization flow can be reduced.

The depth H2 of the impinging passages 26 may be 3 μm or more and 100 μm or less, for example, 3 μm, 10 μm, 20 μm, 30 μm, 60 μm, 100 μm or less. Preferably, the depth H2 of the impinging passages 26 may be 5 μm or more and 10 μm or less, for example, 5 μm, 6 μm, 7 μm, 8 μm or 9 μm. In some embodiments, the depth of the diversion cavity 23, the inlet 24, the clash flow passage 26 and the restriction flow passage 27 may be the same, which facilitates the production of the nozzle 2, reduces the production cost and increases the efficiency. Depth refers to the dimension along the Y direction. Of course, in other embodiments, the depths of the flow guide chamber 23, the inlet 24, the impinging flow channel 26, and the restricting flow channel 27 may be different.

In some embodiments, the inlet 24 and the outlet 25 are located on opposite sides of the diversion chamber 23, respectively, and the number of the inlet 24 is single or multiple.

In some embodiments, the diversion cavity 23, the inlet 24 and the outlet 25 are all symmetrical.

The application also makes experimental comparisons between the nozzles in the related art and the nozzles 2 provided in the embodiments of the application.

Fig. 8 and 9 show simulation of the aerosol form when the hydraulic pressure of the inlet of the first test piece was 24Mpa, and fig. 9 shows simulation of the aerosol form when the hydraulic pressure of the inlet of the second test piece was 24 Mpa. Fig. 8 (a) is a plan view of the first test piece in which Y is zero, fig. 8 (b) is a plan view of the first test piece in which X is zero, and fig. 8 (c) is a plan view of the first test piece from the top to 1cm of the outlet. Fig. 9 (a) is a plan view of the second test piece with Y zero, fig. 9 (b) is a plan view of the second test piece with X zero, and fig. 9 (c) is a plan view of the second test piece from the top to 1cm of the outlet 25. Wherein X, Y axis is the same as X, Y axis in fig. 2.

The nozzle in the related art does not include the restriction flow passage 27, and is denoted as a first experimental piece. The nozzle 2 provided in this embodiment of the application includes a restricted flow channel 27, denoted as a second experimental piece. Test conditions the apparatus was tested according to laboratory standards with a hydraulic pressure of 24Mpa at the inlet 24 of the nozzle 2. The test results are shown in FIGS. 8-9.

As can be seen from comparing the planar slice diagrams of the aerosol in x=0 in fig. 8 and 9, the angle of the atomizing angle θ of the nozzle 2 provided by the embodiment of the application is significantly reduced, which is beneficial to reducing the risk of the atomized medium remaining on other devices of the atomizing device, reducing the waste of the atomized medium, and improving the probability of the atomized medium entering the lung of the user, namely improving the utilization rate of the atomized medium.

In summary, through setting up constraint runner 27 at the export 25 of nozzle 2, the deformation of restriction atomizing medium in the perpendicular face of collision district 261 can effectively reduce atomizing angle θ for nozzle 2 still has less atomizing angle θ under the operating mode of high flow, improves the circular of atomizing tangent plane, thereby reduces atomizing medium and remains, improves atomizing medium utilization ratio.

The application provides a nozzle 2, which nozzle 2is provided with a diversion cavity 23, the side wall of the diversion cavity 23 is provided with an inlet 24 and an outlet 25, and atomized medium enters the nozzle 2 from the inlet 24 and is ejected from the outlet 25 through the diversion cavity 23. The outlet 25 comprises a constraint flow passage 27 and a plurality of collision flow passages 26, the flow guide cavity 23 is communicated with the constraint flow passage 27 through the collision flow passages 26, and at least part of collision areas 261 of the plurality of collision flow passages 26 are positioned in the constraint flow passage 27. In this way, the nebulizing medium is fed via the inlet 24 via the hydraulic pressure, and after flowing through the entire flow-guiding chamber 23, the liquid flows out via the outlet 25. In practice, depending on the pressure exerted on the nebulized medium, the nebulized medium is ejected via the outlet 25 at a certain ejection speed. The atomized media in the diversion cavity 23 respectively form multi-column jet flows through a plurality of collision flow channels 26 to be ejected out of the diversion cavity 23 and are converged in the collision area 261. The multi-column jet collides in the collision zone 261, and the breaking of the liquid column to form aerosol is realized by utilizing the kinetic energy of the jet. Wherein, by providing the restricting flow passage 27 and the plurality of clash flow passages 26 at the outlet 25 of the nozzle 2, at least part of the clash zone 261 of the plurality of clash flow passages 26 is located in the restricting flow passage 27. So, atomizing medium is through a plurality of clash runners 26 and at least partly when restraint runner 27 clash, the plume form of the aerosol that atomizing medium atomizing formed can interfere with restraint runner 27's lateral wall, restraint runner 27's lateral wall can restrict the atomizing medium and clash in the direction of perpendicular to clash district 261 planar direction to reduce atomizing angle θ, reduced aerosol striking atomizing device's other structures and appear atomizing medium and detain the risk on atomizing device, improved atomizing medium's utilization ratio, guaranteed atomizing effect. Meanwhile, although the formed aerosol interferes with the side wall of the restricting flow passage 27, the amount of the mist is not significantly reduced, that is, the atomized medium does not remain in a large amount in the restricting flow passage 27.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. A nozzle, characterized in that the nozzle has a guide cavity; the side wall of the guide cavity has an inlet and an outlet; wherein the outlet includes a constraint flow channel and a plurality of collision flow channels; the guide cavity is connected to the constraint flow channel through the collision flow channel, and at least part of the collision area of the plurality of collision flow channels is located in the constraint flow channel. 2 . The nozzle according to claim 1 , wherein all of the collision areas of the plurality of collision flow channels are located within the constrained flow channel. 3 . The nozzle according to claim 2 , wherein the distance between the outermost collision area of the plurality of collision channels and the liquid outlet port of the constraint channel away from the collision channel is less than 1.5 μm. 4 . The nozzle according to claim 3 , wherein the plurality of collision channels have a same collision zone, and the collision zone is tangent to the liquid outlet port of the constraint channel away from the collision channel. 5. The nozzle according to claim 4 is characterized in that the constrained flow channel is a single flow channel, and the number of the collision flow channels is two; the two collision flow channels are both linear, and the liquid outlet ports of the two collision flow channels are flush; the extension lines of the outer side surfaces of the two collision flow channels converge at the liquid outlet port of the constrained flow channel. 6 . The nozzle according to claim 1 , wherein a depth of the constraining flow channel is greater than or equal to a depth of the collision flow channel. 7 . The nozzle according to claim 1 , wherein the width of the constrained flow channel is greater than or equal to the distance between the outer side surfaces of the liquid outlet ports of the two outermost colliding flow channels. 8. The nozzle according to claim 7 is characterized in that the constrained flow channel is a single flow channel, the number of the collision flow channels is two, and the width of the constrained flow channel is greater than or equal to twice the distance between the outer side surfaces of the liquid outlet ports of the two collision flow channels. 9. The nozzle according to any one of claims 1-8 is characterized in that the width of the collision channel is greater than or equal to 1 μm and less than or equal to 30 μm; and/or the depths of the guide cavity, the inlet and the outlet are all greater than or equal to 3 μm and less than or equal to 100 μm. 10. An atomizing device, characterized by comprising the nozzle according to any one of claims 1-9.