A high efficiency atomizing nozzle

Abstract

The present invention provides a high-efficiency atomizing nozzle, which relates to the field of nozzles. The high-efficiency atomizing nozzle includes a nozzle body, in which a central liquid flow channel, a plurality of inner gas flow channels and a plurality of outer liquid flow channels are arranged, the plurality of outer liquid flow channels are arranged circumferentially at intervals on the outside of the central liquid flow channel, and the plurality of inner gas flow channels are arranged circumferentially at intervals at the annular intervals between the central liquid flow channel and the outer liquid flow channel; the liquid flow direction of the outer liquid flow channel and the air flow direction of the inner gas flow channel are arranged obliquely toward the liquid flow axis close to the central liquid flow channel, respectively, and the liquid flow direction of the plurality of outer liquid flow channels and the air flow direction of the plurality of inner gas flow channels intersect at the same position on the liquid flow axis of the central liquid flow channel. The liquid discharged from the plurality of outer liquid flow channels collides with the liquid discharged from the central liquid flow channel to form droplet clusters, which are blown away and atomized under the jetting action of the airflow, thereby efficiently and evenly forming mist, and achieving a better atomization effect.

Description

Technical Field

[0001] The invention relates to the technical field of nozzles, in particular to a high-efficiency atomizing nozzle. Background Art

[0002] Atomizing nozzle is a nozzle structure that evenly mixes liquid and gas into fine droplet mist that can be suspended in the air. Atomizing nozzles are widely used in scenarios such as humidification, cooling and air purification.

[0003] Traditional atomizing nozzles mostly adopt a single gas flow channel and a single liquid flow channel intersection design, the mixing uniformity of the gas flow and the liquid flow is poor, the size of the mist droplets produced by the nozzle is inconsistent, and it is easy to form large droplets and drip. Subsequently, an improved liquid atomizing device appeared, and it was disclosed that the nozzle body includes a first gas injection part and a second gas injection part for injecting two gas flows, and a liquid passage part with a liquid flow passage; a gas-liquid mixing area part, the gas-liquid mixing area part is to make the gas flow injected from the first gas injection part collide with the gas flow injected from the second gas flow injection part and the liquid flowing out of the liquid passage part to atomize the liquid; and a spray outlet part for spraying the mist atomized in the gas-liquid mixing area part outward.

[0004] The existing improved liquid atomization device is designed with two gas flow channels, the injection directions of the two gas flow channels intersect and form a collision and dispersion effect on the liquid, which can improve the atomization effect of the liquid and make the droplets of the mist more uniform and fine. Among them, the liquid flow rate flowing out of the liquid channel in the middle determines the atomization efficiency, but for the demand for large atomization volume, if the cross-sectional area of ​​the liquid channel is increased or the flow rate of the liquid is increased, it cannot effectively meet the atomization demand of more liquid due to the limitation of the gas injection flow rate, and leads to the problem of large droplets forming and dripping at the outlet.

[0005] In summary, the existing atomization devices have the problem of being unable to meet the atomization requirements of large flow liquids and having poor atomization effects. Summary of the invention

[0006] In order to solve the above problems, the purpose of the present invention is to provide a high-efficiency atomizing nozzle to solve the problems that the existing atomizing devices cannot meet the atomization requirements of large flow liquids and have poor atomization effects.

[0007] The technical solution of the high-efficiency atomizing nozzle of the present invention is:

[0008] The high-efficiency atomizing nozzle comprises a nozzle body, wherein the nozzle body is provided with a central liquid flow channel, a plurality of inner gas flow channels and a plurality of outer liquid flow channels, wherein the plurality of outer liquid flow channels are circumferentially spaced outside the central liquid flow channel, and the plurality of inner gas flow channels are circumferentially spaced at an annular interval between the central liquid flow channel and the outer liquid flow channels;

[0009] The liquid flow direction of the outer liquid flow channel and the gas flow direction of the inner gas flow channel are respectively arranged obliquely toward the liquid flow axis close to the central liquid flow channel, and the liquid flow directions of multiple outer liquid flow channels and the gas flow directions of multiple inner gas flow channels intersect at the same position on the liquid flow axis of the central liquid flow channel.

[0010] Beneficial effect: the liquid flow directions of multiple outer liquid flow channels intersect at the same position on the liquid flow axis of the central liquid flow channel, so that the liquids discharged from the multiple outer liquid flow channels collide, and the liquids discharged from the multiple outer liquid flow channels also collide with the liquid discharged from the central liquid flow channel. After the liquids collide, a cluster of liquid droplets is formed. The airflow direction of the inner gas flow channel intersects with the liquid flow direction of the outer liquid flow channel at the location of the liquid droplet cluster, and the airflow ejected from the inner gas flow channel blows and atomizes the liquid droplet cluster. Since the liquid particles in the liquid droplet cluster are small in size, they are easily further blown and atomized under the action of the airflow jet, thereby forming mist efficiently and evenly. Moreover, through the combined design of the central liquid flow channel and the outer liquid flow channel, the discharge flow rate of the liquid is significantly improved, which fully meets the atomization requirements of large-flow liquids and has a better atomization effect.

[0011] Furthermore, the plurality of inner gas flow channels and the plurality of outer liquid flow channels are arranged in concentric circles with respect to the liquid flow axis of the central liquid flow channel.

[0012] Furthermore, the angle between the airflow direction of the inner gas flow channel and the liquid flow axis of the central liquid flow channel is any angle between 15° and 45°.

[0013] Furthermore, the angle between the liquid flow direction of the outer liquid flow channel and the liquid flow axis of the central liquid flow channel is any angle between 45° and 85°.

[0014] Furthermore, a plurality of inner air cavities are provided inside the nozzle body, the inner air cavities are connected and arranged on the inner gas flow channel, and the plurality of inner air cavities are respectively provided with inlet flow channels, and the plurality of inlet flow channels are arranged radially.

[0015] Furthermore, the inner gas flow channel includes a columnar section and a conical outlet section, and the conical outlet section is arranged in a contraction shape along the gas flow direction of the inner gas flow channel.

[0016] Furthermore, the nozzle body is provided with a first wedge-shaped groove at a position corresponding to the conical outlet section of the inner gas flow channel, and the bottom surface of the first wedge-shaped groove is perpendicular to the gas flow direction of the inner gas flow channel.

[0017] Furthermore, the nozzle body is provided with a second wedge-shaped groove at a position corresponding to the liquid outlet of the outer liquid flow channel, and the bottom surface of the second wedge-shaped groove is perpendicular to the liquid flow direction of the outer liquid flow channel.

[0018] Furthermore, eight inner gas flow channels are evenly spaced in the circumferential direction, and four outer liquid flow channels are evenly spaced in the circumferential direction.

[0019] Furthermore, the nozzle body is a hollow circular cake structure, and a central liquid flow tube is arranged through the nozzle body along the thickness direction, and a plurality of outer liquid flow tubes are arranged through the nozzle body at an angle to the thickness direction, and the central liquid flow tube and the outer liquid flow tubes are respectively provided with liquid inlet joints located on the back side of the nozzle body; the plurality of inlet flow channels are connected and arranged on the outer peripheral wall of the nozzle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of a high-efficiency atomizing nozzle in a specific embodiment 1 of the high-efficiency atomizing nozzle of the present invention;

[0021] Figure 2 Schematic top view of a high-efficiency atomizing nozzle in specific embodiment 1 of the high-efficiency atomizing nozzle of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross section of the middle nozzle body at B-B.

[0023] In the figure: 1-nozzle body, 10-central liquid flow channel, 100-liquid flow axis of the central liquid flow channel, 11-inner gas flow channel, 110-air flow direction of the inner gas flow channel, 111-columnar section, 112-conical outlet section, 12-outer liquid flow channel, 120-liquid flow direction of the outer liquid flow channel, 13-inner gas cavity, 14-inlet flow channel, 15-second wedge-shaped trough, 16-first wedge-shaped trough, 2-central liquid flow tube, 3-outer liquid flow tube. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Specific embodiment 1 of the high-efficiency atomizing nozzle of the present invention, as Figures 1 to 3As shown, the high-efficiency atomizing nozzle includes a nozzle body 1, in which a central liquid flow channel 10, a plurality of inner gas flow channels 11 and a plurality of outer liquid flow channels 12 are arranged, the plurality of outer liquid flow channels 12 are circumferentially spaced apart on the outside of the central liquid flow channel 10, and the plurality of inner gas flow channels 11 are circumferentially spaced apart at the annular interval between the central liquid flow channel 10 and the outer liquid flow channels 12; the liquid flow direction 120 of the outer liquid flow channel and the gas flow direction 110 of the inner gas flow channel are respectively arranged obliquely toward the liquid flow axis 100 close to the central liquid flow channel, and the liquid flow directions 120 of the plurality of outer liquid flow channels and the gas flow directions 110 of the plurality of inner gas flow channels respectively intersect at the same position on the liquid flow axis 100 of the central liquid flow channel.

[0026] The liquid flow directions 120 of multiple outer liquid flow channels are intersected at the same position on the liquid flow axis 100 of the central liquid flow channel, so that the liquids discharged from the multiple outer liquid flow channels 12 collide, and the liquids discharged from the multiple outer liquid flow channels 12 also collide with the liquid discharged from the central liquid flow channel 10. After the liquids collide, a cluster of liquid droplets is formed. The airflow direction 110 of the inner gas flow channel intersects with the liquid flow direction 120 of the outer liquid flow channel at the location of the liquid droplet cluster, and the airflow ejected from the inner gas flow channel 11 blows and atomizes the liquid droplet cluster. Since the liquid particles in the liquid droplet cluster are small in size, they are easily further blown and atomized under the action of the airflow jet, so that mist can be formed efficiently and evenly. Moreover, the combined design of the central liquid flow channel 10 and the outer liquid flow channel 12 significantly improves the discharge flow rate of the liquid, fully meets the atomization requirements of large-flow liquid, and has a better atomization effect.

[0027] In this embodiment, a plurality of inner gas flow channels 11 and a plurality of outer liquid flow channels 12 are arranged in concentric circles about the liquid flow axis 100 of the central liquid flow channel. The concentric circle arrangement ensures that the airflow ejected from the inner gas flow channel 11 can accurately disperse and atomize the droplet clusters formed at the intersection of the liquid flow direction 120 of the outer liquid flow channel and the liquid flow axis 100 of the central liquid flow channel, thereby improving the concentration of the mist generation and ensuring that the droplet particle size is small enough. The angle between the airflow direction 110 of the inner gas flow channel and the liquid flow axis 100 of the central liquid flow channel is any angle between 15° and 45°, and the angle between the liquid flow direction 120 of the outer liquid flow channel and the liquid flow axis 100 of the central liquid flow channel is any angle between 45° and 85°.

[0028] Specifically, the angle between the airflow direction 110 of the inner gas flow channel and the liquid flow axis 100 of the central liquid flow channel is 25°, and the angle between the liquid flow direction 120 of the outer liquid flow channel and the liquid flow axis 100 of the central liquid flow channel is 45°. The liquid flow ejected from the outer liquid flow channel 12 has a branch force that is perpendicular to the direction of the liquid flow axis 100 of the central liquid flow channel. The branch force is used to collide and disperse with the liquid flows ejected from other outer liquid flow channels 12 and the liquid flows ejected from the central liquid flow channel 10, ensuring that droplets are formed on the liquid flow axis 100 of the central liquid flow channel, so that the airflow ejected from the inner gas flow channel 11 plays a significant role in blowing and atomizing the droplets.

[0029] The nozzle body 1 is provided with an inner air cavity 13, which is connected to the inner gas flow channel 11, and multiple inner air cavities 13 are provided with inlet flow channels 14, which are arranged radially. The inner air cavity 13 serves as a buffer space for gas, gathers and buffers the incoming gas, eliminates turbulence and disturbance flow in the gas, and then ejects the gas outward from the inner gas flow channel 11, so that the flow performance of the ejected gas is more stable.

[0030] In addition, the inner gas flow channel 11 includes a columnar section 111 and a conical outlet section 112, and the conical outlet section 112 is arranged in a contracted shape along the gas flow direction 110 of the inner gas flow channel. The outlet structure design of the conical outlet section 112 is conducive to the gathering and pressurization of the jet airflow, increasing the ejection pressure and power of the airflow, and improving the atomization effect of the droplet flying group; and the conical outlet section 112 has a taper of 30°, which has a small airflow resistance value, ensuring that the gas can be ejected outward at a high speed.

[0031] The nozzle body 1 is also provided with a first wedge-shaped groove 16 corresponding to the conical outlet section 112 of the inner gas flow channel 11, and the groove bottom surface of the first wedge-shaped groove 16 is perpendicular to the gas flow direction 110 of the inner gas flow channel. Specifically, the first wedge-shaped groove 16 is an annular groove body, and the groove bottom surface of the first wedge-shaped groove 16 is set perpendicular to the gas flow ejected from the inner gas flow channel 11, ensuring that there is no interference from other structures at the outlet position of the inner gas flow channel 11, ensuring that the gas can be accurately ejected in the direction of the gas flow; correspondingly, a second wedge-shaped groove 15 is also provided at the liquid outlet position of the outer liquid flow channel 12, and the second wedge-shaped groove 15 is also an annular groove body, and the groove bottom surface of the second wedge-shaped groove 15 is perpendicular to the liquid flow direction 120 of the outer liquid flow channel, which also ensures that the liquid can accurately eject outward.

[0032] In this embodiment, eight inner gas flow channels 11 are evenly spaced circumferentially, and four outer liquid flow channels 12 are evenly spaced circumferentially. The four outer liquid flow channels 12 are combined with the central liquid flow channel 10 to form a fluid channel with a larger cross-sectional area, meeting the structural requirements of large flow rate liquid; the eight inner gas flow channels 11 increase the gas flow rate per unit time of the entire high-efficiency atomizing nozzle, ensuring the atomization effect of droplet clusters.

[0033] In addition, the nozzle body 1 is a hollow disk structure, and a central liquid flow tube 2 is provided through the nozzle body 1 along the thickness direction, and a plurality of outer layer liquid flow tubes 3 are provided through the nozzle body 1 obliquely to the thickness direction, and the central liquid flow tube 2 and the outer layer liquid flow tube 3 are respectively provided with a liquid inlet joint located on the back side of the nozzle body 1. The central liquid flow tube 2 and the outer layer liquid flow tube 3 are respectively connected to the liquid flow pipeline through the liquid inlet joint, and eight inlet flow channels 14 are connected and arranged on the outer peripheral wall of the nozzle body 1. It should be noted that the inlet flow channel 14 of the inner layer gas flow channel 11 is arranged between two adjacent outer layer liquid flow channels 12.

[0034] In other specific embodiments of the high-efficiency atomizing nozzle of the present invention, in order to meet different usage requirements, nine inner gas flow channels are evenly distributed at circumferential intervals, and three outer liquid flow channels are evenly distributed at circumferential intervals. The nine inner gas flow channels and the three outer liquid flow channels are centrally symmetrically distributed about the liquid flow axis of the central liquid flow channel. In addition, the angle between the airflow direction of the inner gas flow channel and the liquid flow axis of the central liquid flow channel is 30° or 45°; or, the angle between the liquid flow direction of the outer liquid flow channel and the liquid flow axis of the central liquid flow channel can be 60° or 75°, which can also play a significant role in blowing and atomizing the droplets through the airflow ejected from the inner gas flow channel, thereby achieving the purpose of higher atomization efficiency.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A high-efficiency atomizing nozzle, characterized in that: The nozzle body comprises a central liquid flow channel, a plurality of inner gas flow channels and a plurality of outer liquid flow channels, wherein the plurality of outer liquid flow channels are arranged circumferentially at intervals outside the central liquid flow channel, and the plurality of inner gas flow channels are arranged circumferentially at intervals at an annular interval between the central liquid flow channel and the outer liquid flow channels; The liquid flow direction of the outer layer liquid flow channel and the gas flow direction of the inner layer gas flow channel are arranged obliquely toward the liquid flow axis close to the central liquid flow channel, and the liquid flow directions of the plurality of outer layer liquid flow channels and the gas flow directions of the plurality of inner layer gas flow channels intersect at the same position on the liquid flow axis of the central liquid flow channel; The plurality of inner gas flow channels and the plurality of outer liquid flow channels are arranged in concentric circles about the liquid flow axis of the central liquid flow channel; The angle between the airflow direction of the inner gas flow channel and the liquid flow axis of the central liquid flow channel is any angle between 15° and 45°; The angle between the liquid flow direction of the outer liquid flow channel and the liquid flow axis of the central liquid flow channel is any angle between 45° and 85°.

2. The high-efficiency atomizing nozzle according to claim 1 is characterized in that: A plurality of inner air cavities are also provided inside the nozzle body, and the inner air cavities are connected and arranged on the inner gas flow channel, and inlet flow channels are respectively provided on the plurality of inner air cavities, and the plurality of inlet flow channels are arranged radially.

3. The high-efficiency atomizing nozzle according to claim 1 is characterized in that: The inner gas flow channel comprises a columnar section and a conical outlet section, and the conical outlet section is arranged in a contraction shape along the gas flow direction of the inner gas flow channel.

4. The high-efficiency atomizing nozzle according to claim 3 is characterized in that: The nozzle body is further provided with a first wedge-shaped groove at a position corresponding to the conical outlet section of the inner gas flow channel, and the bottom surface of the first wedge-shaped groove is perpendicular to the gas flow direction of the inner gas flow channel.

5. The high-efficiency atomizing nozzle according to claim 1 is characterized in that: The nozzle body is further provided with a second wedge-shaped groove at a position corresponding to the liquid outlet of the outer liquid flow channel, and the bottom surface of the second wedge-shaped groove is perpendicular to the liquid flow direction of the outer liquid flow channel.

6. The high-efficiency atomizing nozzle according to claim 1 is characterized in that: The inner layer gas flow channels are provided with eight evenly spaced circumferentially, and the outer layer liquid flow channels are provided with four evenly spaced circumferentially.

7. The high-efficiency atomizing nozzle according to claim 2 is characterized in that: The nozzle body is a hollow circular structure, with a central liquid flow tube penetrating along the thickness direction and a plurality of outer liquid flow tubes penetrating obliquely to the thickness direction. The central liquid flow tube and the outer liquid flow tubes are respectively provided with liquid inlet joints located on the back side of the nozzle body; the plurality of inlet flow channels are connected and arranged on the outer peripheral wall of the nozzle body.

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