A water-gas mixing atomizing nozzle and atomizing device

Abstract

A water-gas mixing atomizing nozzle and an atomizing device, the water-gas mixing atomizing nozzle comprises a nozzle, in which a water channel and an air channel are arranged; it is characterized in that it also comprises a nozzle cap connected to the nozzle, the nozzle cap and the nozzle are combined to form an atomizing chamber, a mist outlet connected to the atomizing chamber is arranged on the nozzle cap, the water channel and the air channel are also connected to the atomizing chamber respectively, the water channel is used to allow the water flow to form a jet water flow beam sprayed along the axial direction, and the air channel is used to allow the air flow to form a jet air flow beam sprayed obliquely and allow the jet air flow beam to deviate from the mist outlet of the atomizing chamber; the beneficial effect is that when the water-gas mixing atomizing nozzle and the atomizing device are working, since the air flow beam sprayed by the first group of air channels forms a first intersection with the water flow beam sprayed in the water channel, the water flow beam sprayed in the water channel can be directly broken up and atomized for the first time by means of the air flow beam sprayed by the first group of air channels in a head-on manner, thereby greatly improving the efficiency of atomization.

Description

Technical Field

[0001] The present invention relates to an atomizing structure capable of atomizing liquid into water mist, and in particular to a water-gas mixing atomizing nozzle and an atomizing device. The water-gas mixing atomizing nozzle and the atomizing device can achieve multiple atomizing effects. Background Art

[0002] At present, atomizers are widely used in agriculture, industry, firefighting and other fields. Different fields have different requirements for the size of fog particles. For example, when atomizers are used in dust reduction, the more the fog particle size matches the dust particle size, the easier it is for the fog particles to collide and capture the dust, thus achieving a better dust reduction effect. Therefore, in order to solve the problem of respirable dust with a smaller particle size, an atomizer is required to form a smaller particle size fog.

[0003] For water-gas mixing atomization devices, the existing technology generally refines the mist particles by increasing the atomization effect of gas on water per unit area or increasing the relative speed of gas and water. However, using these two methods will increase the energy consumption of the atomization device and affect the atomization efficiency to a certain extent.

[0004] As another way to refine the mist particles of a water-gas mixing atomizing device, it refines the mist particles through the principle of multiple atomization of water gas. For example, the Chinese utility model patent with the announcement number CN206661483U discloses an improved internal and external mixed atomizing dust suppression nozzle for mining, including a nozzle seat, a nozzle core and a nozzle head, wherein the nozzle core is provided with an atomizing chamber for gas and liquid mixing, and four air passages are provided on the nozzle core, and a water inlet connected to the atomizing chamber and an air inlet connected to the four air passages are provided on the nozzle seat, wherein two air passages are used to connect the atomizing chamber and impact and crush the pressurized water entering the atomizing chamber, and the water-gas mixture initially atomized in the atomizing chamber enters the atmospheric environment through the fine-aperture channel, and the other two air passages are used to connect to the outside atmosphere and collide the water mist discharged from the fine-aperture channel again, thereby generating water mist particles with smaller particle size and larger quantity. This public patent has the following problems:

[0005] 1. The mixture formed after the initial collision of water vapor in the atomization chamber needs to be discharged to the atmosphere through a channel with a smaller diameter. Although shearing and crushing will occur at the outlet of the mixture when it is discharged to the atmosphere, the mixture will easily cause adjacent droplets to merge again due to the reduction of space when passing through the channel with a smaller diameter, thereby weakening the previous atomization effect;

[0006] 2. The two air passages spray gas into their own independent atomization chamber and atmospheric environment respectively, that is, the atomization of water or mixture by the two atomized gases is completed independently of each other, and the energy utilization rate is not high. In addition, when part of the gas is directly sprayed into the atmospheric environment, the atmospheric environment will weaken the sprayed gas and reduce the energy utilization rate. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a water-gas mixing atomizing nozzle which can reduce the atomized particle size on the basis of controlling energy consumption.

[0008] In order to solve the above technical problems, the present invention provides a water-gas mixing atomizing nozzle, comprising a nozzle, in which a water channel and an air channel are provided; and further comprising a nozzle cap connected to the nozzle, wherein the nozzle cap and the nozzle are combined to form an atomizing chamber, and the nozzle cap is provided with a mist outlet connected to the atomizing chamber, and the water channel and the air channel are also respectively connected to the atomizing chamber, the water channel is used to allow the water flow to form a jet water flow beam sprayed along the axial direction, and the air channel is used to allow the air flow to form a jet air flow beam sprayed obliquely and allow the jet air flow beam to deviate from the mist outlet of the atomizing chamber. The nozzle is provided with at least two groups of air channels, namely a first group of air channels and a second group of air channels, which are respectively connected to the atomization chamber. The first group of air channels includes at least two first air channels, and the at least two first air channels are arranged so that the jet air flow beams formed by each of them not only intersect with each other but also intersect with the jet water flow beam formed by the water channel so as to form a first intersection point. The second group of air channels includes at least two second air channels, and the second air channels are arranged so that the jet air flow beams formed by them can be sprayed into the space between the mist outlet of the atomization chamber and the first intersection point.

[0009] Among them, the water channel is used to allow the water flow to form a jet water stream that is ejected axially. This feature defines that the axial direction of the water-gas mixing atomizing nozzle and the nozzle is the direction in which the water flow is ejected, and conversely defines that the direction of the water flow is the axial direction; and the internal structure and flow direction of the water channel itself are not necessarily completely axially arranged, as long as it has a structure that ensures that the jet water stream is ejected axially.

[0010] Among them, the air channel is used to allow the airflow to form an inclined jet air flow beam, which defines that the airflow is inclined to be ejected at a certain angle relative to the axial direction, and the internal structure and flow direction of the air channel itself can be linear, spiral or other structures, as long as it has a structure that ensures that the jet air flow beam is ejected in a direction inclined to the axial direction.

[0011] Among them, the air channel is used to allow the jet air flow to deviate from the mist outlet of the atomization chamber, defining that the jet air flow will not be directly sprayed toward the mist outlet but will deviate from the mist outlet of the atomization chamber, so that the jet air flow will not be directly sprayed from the mist outlet but will hit the inner side wall of the side of the mist outlet to form a reflection in the atomization chamber, thereby increasing the formation of turbulence and greatly improving the atomization efficiency.

[0012] Among them, from a theoretical design perspective, the first intersection point is preferably located on the center line of the jet air flow beam and also on the center line of the jet water flow beam. However, as a practical engineering product, deviations are allowed in actual processing. To this end, at least two of the first air channels are arranged so that the jet air flow beams formed by each of them not only intersect with each other but also intersect with the jet water flow beam formed by the water channel. The defined intersection point of mutual intersection is located within the range of the air flow beam or within the range of the air flow beam and the water flow beam, and does not necessarily have to be located on the center line.

[0013] Among them, the second air channel is arranged so that the jet air flow formed by it can be sprayed into the space between the mist outlet of the atomizing chamber and the first intersection. In fact, the jet air flow can be sprayed into the space in the atomizing chamber and located in front of (above) the first intersection. It first defines the arrangement structure of the second air channel, especially its outlet, so that the jet air flow formed by it can be sprayed into the space between the mist outlet of the atomizing chamber and the first intersection; secondly, it defines that the jet air flow formed by the second air channel can be sprayed into the space above the first intersection, so that the atomized vapor in the atomizing chamber can be further atomized. Several jet air flow beams formed by several second air channels may or may not intersect, and they mainly use the kinetic energy of their airflow to further impact and crush the water droplets that have formed turbulence in the atomizing chamber to further atomize the water droplets.

[0014] Compared with the prior art, the present invention has the following main beneficial effects:

[0015] 1. When the water-gas mixing atomizing nozzle and the atomizing device of the present invention are working, since the air flow beams ejected from the first group of air channels and the water flow beams ejected from the water channels form a first intersection point, the air flow beams ejected from the first group of air channels can directly break up the water flow beams ejected from the water channels in a hard-hitting manner and atomize them for the first time, thereby greatly improving the efficiency of atomization.

[0016] 2. Since the second air channel is arranged so that the jet air flow formed by it can be sprayed into the space between the mist outlet of the atomization chamber and the first intersection, the atomized water droplets concentrated in the atomization chamber and having formed turbulence can be further broken up and atomized before flowing out with the help of the air flow beams sprayed by the second group of air channels, so that the air flow beams sprayed by the second air channel and the air flow beams sprayed by the first air channel can cooperate with each other to enhance the atomization effect. Now, compared with the prior art (with announcement number CN206661483U) in which a beam channel 13 is set between the first and second atomizations and the scheme of impact atomization is adopted in different spaces, it is obvious that the oscillation degree of the airflow in the atomization chamber is increased, and the atomization efficiency is higher.

[0017] As an improvement to the above solution, at least two of the second gas channels are arranged so that the gas streams ejected therefrom intersect with each other to form a second intersection point, and the first intersection point is spaced axially from the second intersection point. In this way, the gas streams ejected by the two second gas channels can mutually reinforce the impact kinetic energy by utilizing the characteristic that the gas streams ejected by the two second gas channels can intersect with each other.

[0018] As an improvement of the above scheme, the second intersection is located on the axial trajectory defined by the jet water stream formed by the water channel. Among them, the axial trajectory defined by the jet water stream formed by the water channel refers to a position located before the first intersection and in the same axial direction as the jet water stream formed by the water channel, because at the first intersection position, the jet water stream formed by the water channel may not be completely broken up by the jet air stream ejected by the first air flow channel, and some large particle water droplets will continue to move along the original trajectory. Therefore, since the second intersection is located on the axial trajectory defined by the jet water stream formed by the water channel, the jet air stream formed by the second air channel can be used to further directly crush the residual jet air stream formed by the jet water stream formed by the water channel after crossing the first intersection.

[0019] As an improvement of the above solution, the mist outlet on the nozzle cap is in the shape of a narrow slit. In this way, a water mist curtain wall can be formed through the mist outlet, which not only reduces the interference between water mists but also improves the efficiency of atomization dust removal. For example, one or more atomization nozzles can be used to form a tunnel section for atomization dust removal.

[0020] As an improvement of the above solution, the second intersection point is close to the mist outlet, so that the water mist can be reliably atomized for the second time before being sprayed out from the mist outlet, thereby improving the atomization efficiency.

[0021] As an improvement of the above solution, the injection ports of the first air channel and the second air channel are arranged on the same circumference with the outlet of the water channel as the center;

[0022] Alternatively, the injection ports of the first air channel are arranged on the same circumference with the outlet of the water channel as the center, the injection ports of the second air channel are arranged on the same circumference with the outlet of the water channel as the center, and the injection ports of the first air channel and the second air channel are located on different circumferences.

[0023] As an improvement of the above solution, the number of the first air channels and the second air channels is the same, and the first air channels and the second air channels are staggered in the circumferential direction.

[0024] As an improvement of the above solution, the nozzle cap is used to form a side wall of the atomization chamber, which includes a connected cylindrical portion and a conical portion, the mist outlet is arranged in the area where the conical portion is located, and the nozzle closes the end of the cylindrical portion away from the conical portion to form the atomization chamber.

[0025] Correspondingly, the present invention also discloses an atomization device, including a base and the water-gas mixing atomization nozzle described in the present invention, wherein the base is connected to the nozzle, and the base is provided with a water inlet path connected to the water channel and an air inlet path connected to the at least two groups of air channels.

[0026] As an improvement of the above solution, an annular transition cavity connected to the air intake path is formed between the end surface of the nozzle and the end surface of the base, and the air passages of the nozzle are all connected to the annular transition cavity.

[0027] Since the present invention has the above characteristics and advantages, it can be applied to a water-gas mixing atomizing nozzle and an atomizing device, thereby being able to achieve multiple atomization effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the atomizing nozzle of the present invention;

[0029] Figure 2 is a top view of the nozzle of the present invention;

[0030] Figure 3 yes Figure 2 Cross-sectional view along CC direction;

[0031] Figure 4 It is a cross-sectional view of the atomizing device of the present invention. DETAILED DESCRIPTION

[0032] The structure of the water-gas mixing atomizing nozzle and the atomizing device using the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] like Figure 1 To Attachment Figure 3As shown, the present invention discloses a water-gas mixing atomizing nozzle, comprising a nozzle 1 and a nozzle cap 2 connected to the nozzle 1. The nozzle 1 is provided with a water channel 11 arranged along the axial direction and an air channel 12 arranged obliquely relative to the axial direction. The water channel 11 and the air channel 12 can be circular hole channels, or square or other shaped channels. The nozzle cap 2 is combined with the nozzle 1 to form an atomizing chamber 3. The nozzle cap 2 is provided with a mist outlet 21 connected to the atomizing chamber 3. The mist outlet 21 is in the shape of a narrow slit. The water channel 11 and the air channel 12 are also connected to the atomizing chamber 3 respectively. The water channel 11 is used to allow the water flow to form a spray water stream ejected along the axial direction. The air channel 12 is used to allow the airflow to form an inclined jet flow beam and to allow the jet flow beam to deviate from the mist outlet 21 of the atomizing chamber 3, so that the jet flow beam will not be directly sprayed toward the mist outlet 21 but will deviate from the mist outlet 21 of the atomizing chamber 3, so that the jet flow will not be directly ejected from the mist outlet 21 but will hit the inner side wall of the side of the mist outlet 21 and form a reflection in the atomizing chamber 3, thereby increasing the formation of turbulence and greatly improving the atomization efficiency. Among them, the water channel 11 is used to allow the water flow to form an axially ejected jet water flow beam. This feature defines that the axial direction of the water-gas mixing atomizing nozzle and nozzle is the direction in which the water flow is ejected, and conversely defines that the direction of the water flow is the axial direction; and the internal structure and flow direction of the water channel 11 itself are not necessarily completely axially arranged, as long as it has a structure that ensures that the jet water flow beam is ejected axially. Among them, the air channel 12 is used to allow the airflow to form an inclined jet air flow beam, which defines that the airflow is inclined to be ejected at a certain angle relative to the axial direction, and the internal structure and flow direction of the air channel 12 itself can be linear, spiral or other structures, as long as it has a structure that ensures that the jet air flow beam is ejected in a direction inclined to the axial direction.

[0034] The nozzle 1 is provided with at least two groups of air channels 12, namely, a first group of air channels and a second group of air channels, which are respectively connected to the atomizing chamber 3. The first group of air channels includes at least two first air channels 12a, and the at least two first air channels 12a are arranged so that the jet air streams formed by them not only intersect with each other but also intersect with the jet water stream formed by the water channel 11, so as to form a first intersection point B1. The second group of air channels includes at least two second air channels 12b, and the second air channels 12b are arranged so that the jet air streams formed by them can be sprayed to the space between the mist outlet 21 of the atomizing chamber 3 and the first intersection point B1. From a theoretical design perspective, the first intersection point B1 is preferably located on the center line of the jet air flow beam and also on the center line of the jet water flow beam. However, as an actual engineering product in this embodiment, deviations are allowed in actual processing. To this end, at least two of the first air channels 12a are arranged so that the jet air flow beams formed by each of them not only intersect with each other but also intersect with the jet water flow beam formed by the water channel 11. The defined intersection point is located within the range of the air flow beam or within the range of the intersection of the air flow beam and the water flow beam, and does not necessarily have to be located on the center line.

[0035] When the water-gas mixing atomizing nozzle of the present invention is working, the water channel 11 sprays a water jet stream axially into the atomizing chamber 3, and the air channel 12 sprays a water jet stream into the atomizing chamber 3 in a direction with a certain inclination angle with the water jet stream. The jet streams formed by the first air channels 12a intersect with each other and intersect with the water jet streams, and the water jet streams are atomized once. The dispersed water and mist collide with each other and collide with the inner wall of the atomizing chamber 3, and rebound and collide again. Under the atomization effect of the jet stream, the water mist mixture is mainly diffused in front of the first intersection (the spray direction of the water jet stream is forward, and the spray direction of the back-to-back water jet stream is relatively backward). Correspondingly, the jet air flow formed by the second air channel 12b sprays toward the space between the mist outlet 21 and the first intersection B1 in the atomizing chamber 3 and hits the inner wall of the atomizing chamber 3. This jet air flow will further hit part of the water and mist atomized once. In addition, the jet air flow formed by the second air channel provides further turbulent power to the flow field in the atomizing chamber 3. The direct impact and the power of the turbulent air flow will cause at least part of the atomized water mist mixture to be atomized for a second time. It can be seen that the atomizing nozzle of the present invention realizes at least two impact atomizations in the same atomizing chamber 3. The jet air flow of the second atomization will affect the airflow generated after the first atomization, and increase the degree of oscillation of the airflow in the atomizing chamber 3. Compared with the prior art, which implements impact atomization in different spaces, the energy consumption utilization rate of the atomizing nozzle of the present invention is higher, and fog particles with smaller particle size can be formed on the basis of the same energy consumption. In addition, the atomizing nozzle of the present invention can achieve a more uniform atomization effect under the action of a turbulent flow field.

[0036] In order to further improve the energy utilization rate of the atomizing nozzle, the atomizing nozzle of the present invention arranges at least two of the second air channels 12b so that the jet air flow beams thereof intersect with each other so as to form a second intersection point B2, and the first intersection point B1 and the second intersection point B2 have an axial spacing. The jet air flow beam formed by the second air channel 12b produces a fierce collision at the second intersection point B2, thereby providing another power for further strong turbulence of the flow field in the atomizing chamber 3, and atomizing the water in the atomizing chamber 3 after being atomized in sequence again, so that the particles atomized by the atomizing nozzle can achieve a more refined effect under a certain energy consumption. Among them, the second intersection point is preferably close to the position of the mist outlet 21, and when it is close to the position of the mist outlet 21, it is convenient to perform secondary atomization of as much water and fog as possible, thereby improving energy utilization. The air channel of the present invention can also be provided with a third group of air channels to form a third intersection point, or even a fourth group of air channels to form a fourth intersection point, etc.

[0037] It should be noted that the jet water stream formed by the water channel 11 may not be completely broken up after colliding with the jet air stream of the first group of air channels. At this time, the residual jet water stream that has not been broken up continues to spray forward and undergoes secondary atomization. As a preferred solution for secondary atomization, the second intersection point B2 is located on the axial trajectory defined by the jet water stream formed by the water channel 11. The axial trajectory defined by the jet water stream here refers to the axial motion trajectory of the jet water stream that may continue to extend after exceeding the first intersection point B1. If there is no residual water stream after the jet water stream is broken up at the first intersection point B1, the second intersection point B2 is located on the extension line of the jet water stream. The atomizing nozzle 1 of the present invention sets the second intersection point B2 directly on the axial trajectory defined by the spray water stream formed by the water channel 11. Even if there is still a residual spray water stream after one atomization, it can be directly impacted by the multiple intersecting spray air streams formed by the second air channel 12b, so as to further strengthen the secondary atomization of the remaining water stream under the above-mentioned strong secondary atomization situation.

[0038] Furthermore, the angle formed by the jet air flow and the jet water flow corresponding to the first intersection B1 is A1, and the angle formed by the jet air flow and the jet water flow corresponding to the second intersection B2 is A2, and A1 is preferably greater than A2. When A1 is greater than A2, the maximum radial surface occupied by the air channel 12 can be reduced, that is, the radial dimension requirement for the nozzle 1 is lower. A1 of the present invention can also be selected to be equal to or less than A2. If A1 is equal to or less than A2, the air channel 12 corresponding to the second intersection B2 needs to occupy a larger radial dimension relative to the first intersection B1. At this time, a larger radial dimension of the nozzle 1 is required.

[0039] As a preferred structure of the nozzle cap 2, the nozzle cap 2 is used to form a side wall of the atomizing chamber 3, including a connected cylindrical portion 22 and a conical portion 23, and the mist outlet 21 is arranged in the area where the conical portion 23 is located, and the nozzle 1 closes the end of the cylindrical portion 22 away from the conical portion 23 to form the atomizing chamber 3. In order to provide space for multiple atomizations, the present invention sets the inner cavity of the nozzle cap 2 into two parts, the cylindrical portion 22 and the conical portion 23. Among them, the area where the cylindrical portion 22 is located is mainly used for one-time atomization, ensuring that there is enough space for one-time atomization, and facilitating the full mixing of water and fog in enough space. The airflow after atomization will flow to the jet port. Since the mist outlet 21 is arranged in the area where the conical portion 23 is located, the airflow will flow to the conical portion 23. During the flow process, the airflow will produce friction and impact under the effect of the smaller caliber, which is equivalent to further atomization, and the fog particle size can be further reduced.

[0040] Among them, the mist outlet 21 can be set to one or more. Preferably, one of the mist outlets 21 is set on the axial trajectory defined by the spray water beam. In addition, the mist outlet 21 can be a narrow slit-shaped structure or a circular structure. When the mist outlet 21 is a narrow slit-shaped structure, a water mist curtain wall can be formed through the mist outlet 21, which not only reduces the interference between the water mists but also improves the efficiency of atomization dust removal. For example, one or more of the atomization nozzles can be used to form a tunnel section for atomization dust removal.

[0041] The air channel 12 of the present invention preferably adopts the following two arrangements:

[0042] In a first arrangement, the injection ports of the first air channel 12 a and the second air channel 12 b are arranged on the same circumference with the outlet of the water channel 11 as the center.

[0043] In the second arrangement, the jets of the first air channel 12a are arranged on the same circumference with the outlet of the water channel 11 as the center, and the jets of the second air channel 12b are arranged on the same circumference with the outlet of the water channel 11 as the center, and the jets of the first air channel 12a and the jets of the second air channel 12b are located on different circumferences. That is, different groups of the air channels 12 are arranged on different circumferences. Figure 2 This is the method shown, and the number of the two groups of air channels is the same. The arrangement of the two ends of the air channel 12 of the present invention projected onto the nozzle diameter surface can also be arranged in other reasonable ways according to needs.

[0044] As an embodiment of orderly airflow in the atomizing chamber 3, the number of the first air channels 12a and the second air channels 12b is the same, and the first air channels 12a and the second air channels 12b are staggered in the circumferential direction. In this case, the airflow of the jet air stream formed by each of the air channels 12 is relatively orderly.

[0045] See attached Figure 4 As shown, the present invention further discloses an atomizing device, comprising a base 4 and the water-gas mixing atomizing nozzle of the present invention, wherein the base 4 is connected to the nozzle 1, and the base 4 is provided with a water inlet road 41 connected to the water channel 11 and an air inlet road 42 connected to the at least two groups of air channels 12. The structure and working principle of the water-gas mixing atomizing nozzle are specifically referred to the contents of the above specific embodiments.

[0046] The air intake path 42 may be a main air intake path, which is connected to each independent air channel 12 through the main air intake path; the air intake path 42 may also be provided with corresponding air intake sub-paths corresponding to each group of air channels 12. In actual use, the operator may introduce gas of different pressures into each air intake sub-path according to the needs. Figure 4 The display shows the general air intake path.

[0047] Furthermore, an annular transition chamber 13 connected to the air inlet path 42 is formed between the end face of the nozzle 1 and the end face of the base 4, and the air passages 12 of the nozzle 1 are all connected to the annular transition chamber 13. The atomizing device of the present invention first passes the gas entering the air passage 12 from the base 4 into the annular transition chamber 13 of the nozzle 1, and the gas in the annular transition chamber 13 flows clockwise or counterclockwise under the action of the airflow, and is distributed to each of the air passages 12 at the same time. The annular transition chamber 13 of the present invention facilitates the discharge of gas into the air passage 12, and the kinetic energy of the gas can be further increased due to the flow of gas. Since each of the air passages 12 is connected to the annular transition chamber 13, it can be inferred that the air inlet path 42 generally adopts the method of the total air inlet path by adopting the annular transition chamber 13 here.

[0048] It should be noted that the atomizing device of the present invention can be used alone or in combination. When the atomizing device is used alone, the external water source can be directly connected to the water inlet road 41 of the base 4 through the water channel structure, and the external compressed gas can be connected to the air inlet road 42 of the base 4 through the air channel structure. When multiple atomizing devices are used in combination, the layout of the water channel and the air channel of the Chinese utility model patent with announcement number CN207342939U can be adopted.

Claims

1. A water-gas mixing atomizing nozzle, comprising a nozzle, wherein a water channel and an air channel are provided in the nozzle; characterized in that: It also includes a nozzle cap connected to the nozzle, the nozzle cap and the nozzle are combined to form an atomizing chamber, the nozzle cap is provided with a mist outlet connected to the atomizing chamber, the water channel and the air channel are also connected to the atomizing chamber respectively, the water channel is used to allow the water flow to form a jet water flow beam sprayed along the axial direction, and the air channel is used to allow the air flow to form a jet air flow beam sprayed obliquely and allow the jet air flow beam to deviate from the mist outlet of the atomizing chamber; the nozzle is provided with at least two groups of air channels connected to the atomizing chamber respectively, namely a first group of air channels and a second group of air channels, the first group of air channels includes at least two first air channels, and the at least two first air channels are arranged so that the jet air flow beams formed by them not only intersect with each other but also intersect with the jet water flow beam formed by the water channel so as to form a first intersection point, and the second group of air channels includes at least two second air channels, and the second air channels are arranged so that the jet air flow beams formed by them can be sprayed to the space between the mist outlet of the atomizing chamber and the first intersection point; At least two of the second gas channels are arranged to allow the jet gas streams thereof to intersect with each other so as to form a second intersection point, and the first intersection point is spaced axially from the second intersection point; The jets of the first air channel and the second air channel are arranged on the same circumference with the outlet of the water channel as the center; or, the jets of the first air channel are arranged on the same circumference with the outlet of the water channel as the center, and the jets of the second air channel are arranged on the same circumference with the outlet of the water channel as the center, and the jets of the first air channel and the jets of the second air channel are located on different circumferences; The nozzle cap is used to form a side wall of the atomization chamber, which includes a connected cylindrical portion and a conical portion. The mist outlet is arranged in the area where the conical portion is located. The nozzle closes the end of the cylindrical portion away from the conical portion to form the atomization chamber.

2. The water-gas mixing atomizing nozzle according to claim 1, characterized in that: The second intersection point is located on an axial trajectory defined by the jet water stream formed by the water channel.

3. The water-gas mixing atomizing nozzle according to claim 2, characterized in that: The mist outlet on the nozzle cap is in the shape of a narrow slit.

4. The water-gas mixing atomizing nozzle according to any one of claims 1 to 3, characterized in that: The second intersection point is close to the mist outlet.

5. The water-gas mixing atomizing nozzle according to claim 1, characterized in that: The number of the first air channels and the second air channels is the same, and the first air channels and the second air channels are staggered in the circumferential direction.

6. An atomizing device, characterized in that: It comprises a base and the water-gas mixing atomizing nozzle according to any one of claims 1 to 5, wherein the base is connected to the nozzle, and the base is provided with a water inlet path connected to the water channel and an air inlet path connected to the at least two groups of air channels.

7. The atomizing device according to claim 6, characterized in that: An annular transition cavity communicated with the air inlet path is formed between the end surface of the nozzle and the end surface of the base, and the air passages of the nozzle are all communicated with the annular transition cavity.

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