WO2021259349A1 - 一种气助式静电超声雾化喷头及方法 - Google Patents
一种气助式静电超声雾化喷头及方法 Download PDFInfo
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- WO2021259349A1 WO2021259349A1 PCT/CN2021/102021 CN2021102021W WO2021259349A1 WO 2021259349 A1 WO2021259349 A1 WO 2021259349A1 CN 2021102021 W CN2021102021 W CN 2021102021W WO 2021259349 A1 WO2021259349 A1 WO 2021259349A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
- B05B3/0409—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements
- B05B3/0418—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine
- B05B3/0422—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
- B05B3/0427—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements the outlet elements being directly attached to the rotor or being an integral part of it
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0692—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0075—Nozzle arrangements in gas streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
Definitions
- the invention belongs to the field of agricultural engineering atomization cultivation, and relates to an air-assisted electrostatic ultrasonic atomization nozzle and a method.
- electrostatic spray technology Since 1988, my country’s first electrostatic spray technology has been successfully promoted. Compared with conventional spray technology, electrostatic spray technology has obvious advantages. Fundamentally reduce environmental pollution and labor intensity, so as to reduce costs.
- Ultrasonic atomization is the use of fluid dynamics to generate ultrasonic waves, thereby generating cavitation to atomize liquid droplets into small molecular droplets. Compared with other atomization technologies, it has low cost, small droplet size, uniform distribution, and large atomization volume. Advantages, secondly, ultrasonic atomization technology is widely used in medical equipment, agricultural atomization cultivation, industrial dust removal, sewage treatment, etc.
- the air-assisted electrostatic ultrasonic atomization nozzle has the advantages of long service life, good spraying effect and high reliability.
- the development and research of various nozzles is striving for perfection, so there are many parts worthy of in-depth research on the level of electrostatic ultrasonic atomization technology.
- the present invention provides an air-assisted electrostatic ultrasonic atomization nozzle, which aims to charge the fog droplets with static electricity, and accelerate and refine the fog droplets many times.
- the present invention achieves the above technical objectives through the following technical means.
- An air-assisted electrostatic ultrasonic atomization nozzle includes an air inlet sleeve, a Laval tube, a resonance body and a jet element body; the left end of the air inlet sleeve is provided with an air inlet, and the right end of the air inlet sleeve is connected to The left end of the Laval tube is connected, the right end of the Laval tube is connected with the left end of the resonator body, the right end of the resonator body is connected with the left end of the jet element body, and a resonance tube is arranged between the resonance body and the jet element body.
- the closed surface of the resonance tube makes the gas in the resonance body enter the jet element body through the V-shaped resonance tube through the air guide hole; the resonance cavity is provided in the resonance body, and the side wall of the resonance body is provided with a V-shaped resonance tube, The V-shaped resonance tube is in communication with the air guide hole opened on the jet element body.
- the jet element body is also provided with a liquid inlet
- the rotating device includes a piezoelectric small ball and a vortex blade; the piezoelectric small sphere is ellipsoidal and the outer contour is coated with piezoelectric material; the piezoelectric small ball is arranged with several vortex blades .
- the rotating device is arranged in the movable cavity of the piezoelectric small ball and supported by the supporting rod; the movable cavity of the piezoelectric small ball is opened in the fluidic element body.
- the middle section of the piezoelectric small ball movable cavity is in a constricted and expanded tube shape, the left end of the middle section of the piezoelectric small ball movable cavity is divergent, and the right end of the middle section of the piezoelectric small ball movable cavity is tapered and tapered.
- the outer contour of the piezoelectric small ball and the contour of the inner wall of the active cavity of the piezoelectric small ball are set according to Laval tube parameters.
- the resonant cavity is of a stepped shape, the left end of the resonant cavity has a diameter of 9-11 mm, the middle section has a diameter of 5-7 mm, and the right end expanded end has a diameter of 8-10 mm.
- liquid inlet hole and the air guide hole are arranged opposite to each other up and down.
- the gap is 1 to 2 mm; the height difference between the upper and lower walls of the diversion cavity is 2 to 3 mm.
- twist angle of the scroll blade is set to 45°.
- the working method of the air-assisted electrostatic ultrasonic atomization nozzle a certain pressure of gas enters the Laval tube through the air inlet, and then rapidly accelerates from subsonic speed to supersonic speed.
- a supersonic airflow is formed at the exit of the Laval tube, and then the supersonic airflow enters
- the stepped resonant cavity generates a certain shock wave at the entrance of the resonant cavity at the same time. As the pressure in the cavity gradually increases, the shock wave gradually moves away from the entrance end.
- the high-speed airflow ultrasonically vibrates in the stepped resonant cavity, resulting in the right resonant tube
- the closed surface also produces ultrasonic vibration, and at the same time, the droplets flow from the outlet of the diversion cavity to the outer end surface of the closed surface of the resonance tube through the liquid inlet hole, which promotes the ultrasonic vibration of the liquid droplet and breaks and refines.
- the pressure gradually drops, causing the airflow to flow out of the V-shaped resonance tube, and the airflow through the air guide hole merges with the droplet at the left end of the jet element body to reach the second atomization, and then the high-speed gas-liquid mixture impacts on the vortex blade
- the gas-liquid mixture is screwed in at a high speed, and the piezoelectric ball is driven to rotate quickly, forming a short-term acceleration of the fluid.
- the piezoelectric material produces a positive piezoelectric effect, and positive and negative charges appear on the inside and outside of the piezoelectric material, and then the droplets are positively charged after passing through the surface of the piezoelectric ball.
- the high-speed gas-liquid mixture passes through the Laval-shaped channel formed by the outer wall of the piezoelectric ball and the inner wall of the piezoelectric ball's movable cavity, and accelerates to supersonic speed. Therefore, the droplets further atomize in this process, and finally the supersonic band Static mist droplets are ejected from the mist outlet.
- the present invention combines the Laval principle, the working principle of the resonator, and the piezoelectric material is subjected to external pressure, the piezoelectric material produces a positive piezoelectric effect, and at the same time, positive and negative opposite charges appear on the inner and outer surfaces of the piezoelectric material, and the droplets pass through The outer surface is thus positively charged, and the high-speed gas-liquid mixture impacts the rotation of the vortex blade, so that the fluid is screwed in and accelerates the formation in a short time, and the rotation of the vortex blade further drives the rotation of the piezoelectric ball;
- the contour of the outer wall of the small ball and the contour of the inner wall of the piezoelectric ball movable cavity are designed according to the Laval tube parameters. Accelerate and refine.
- the gas of a certain speed enters the Laval tube through the air inlet and accelerates from subsonic speed to supersonic speed, forming a high-speed airflow at the exit of the Laval tube.
- the high-speed airflow forms an ultrasonic oscillation in the stepped resonant cavity, and drives the closed surface of the resonant tube to produce ultrasonic oscillation together, so that the droplets are shattered on the outer end surface of the closed surface to form the first refinement.
- the side wall of the resonator is provided with a V
- the shaped resonance tube is connected with the air guide hole of the jet element body, so that the refined liquid droplets on the closed surface are secondarily atomized and then blown into the piezoelectric small ball movable cavity.
- the gas-liquid mixture enters the active cavity of the piezoelectric ball and impacts the vortex blade and then rotates, so that the fluid is screwed in and accelerates in a short time, thereby driving the piezoelectric ball to rotate, and the right end of the piezoelectric ball passes through the rotating center Fix the position of the piezoelectric ball to ensure the normal rotation of the piezoelectric ball.
- the piezoelectric material produces a positive piezoelectric effect, and positive and negative charges appear on the inner and outer surfaces of the piezoelectric material, so that the mist droplets pass the surface of the piezoelectric ball with positive and negative charges.
- the outer wall contour of the piezoelectric ball and the inner wall contour of the piezoelectric ball movable cavity are designed according to the Laval tube parameters.
- the high-speed gas-liquid mixture passes through the piezoelectric ball and the upper and lower channels formed by the inner wall of the middle section of the piezoelectric ball movable cavity.
- Laval is tubular in order to further accelerate and refine the droplets.
- the purpose of setting the closed surface of the resonance tube is to prevent the gas in the resonance body from directly entering the jet element body, and enter through the air guide hole in the jet element body to blow the liquid in the jet element body onto the rotating device, so that the high-speed gas-liquid mixture is
- the piezoelectric ball generates a certain pressure
- the piezoelectric material produces a positive piezoelectric effect, and positive and negative opposite charges appear on the inner and outer surfaces of the piezoelectric material, so that the droplets are positively charged through the surface.
- Figure 1 is a schematic diagram of the structure of the air-assisted electrostatic ultrasonic atomization nozzle of the present invention
- Figure 2 is a left side view of the piezoelectric ball and scroll blade of the present invention.
- FIG. 3 is a schematic diagram of the piezoelectric ball and the inner wall of the piezoelectric ball movable cavity forming a Laval tube and the center of the piezoelectric ball is connected to the center of the support rod according to the present invention
- Fig. 4 is a schematic diagram of the streamline of the Laval tube of the present invention.
- the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
- installed can be a fixed connection or a detachable connection.
- integrally connected it can be a mechanical connection or an electrical connection
- it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
- the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
- the air-assisted electrostatic ultrasonic atomization nozzle of the present invention consists of an air inlet 1, an air inlet sleeve 2, a Laval tube 3, a resonance body 4, a resonance cavity 5, and a sealing surface of the resonance tube 6.
- An inlet hole 1 is provided at the center of the left end of the inlet sleeve 2, the right end of the inlet sleeve 2 is connected to the left end of the Laval tube 3, and the right end of the Laval tube 3 is connected to the left end of the resonance body 4
- the resonator body 4 is provided with a stepped resonant cavity 5 in order to improve the resonance effect of the airflow in the resonant cavity.
- the side wall of the resonator body 4 is provided with a V-shaped resonator tube 15 which The right end of the body 4 is the resonator tube closing surface 6, and the right end of the resonator body 4 is connected to the left end of the jet element body 9.
- the purpose of the resonant tube closing surface 6 is to prevent the gas in the resonator body 4 from directly entering the jet element body 9. Enter through the air guide hole 14 in the jet element body 9 to blow the liquid in the jet element body 9 onto the rotating device, so that after the high-speed gas-liquid mixture generates a certain pressure on the piezoelectric ball, the piezoelectric material generates positive piezoelectricity
- the effect is that positive and negative opposite charges appear on the inner and outer surfaces of the piezoelectric material, so that the droplets are positively charged through the surface;
- the material of the jet element body 9 of the present invention is polytetrafluoroethylene, which has corrosion resistance, high temperature resistance, and The advantages of better abrasion resistance and good electrical insulation performance; the torsion angle of the scroll blade 13 is set to 45°, and the swirl effect is also better for high-speed gas-liquid mixing at this angle.
- the upper side wall of the jet element body 9 is provided with a liquid inlet hole 7 which communicates with the diversion cavity 8.
- the diversion cavity 8 is located on the upper inner wall of the jet element body 9, and the diversion cavity 8 There is a gap of 1 ⁇ 2mm between the liquid outlet of the resonator tube and the closed surface 6 of the resonance tube.
- An air guide hole 14 is opened on the lower left side of 9 to connect with the V-shaped resonator tube 15.
- the center of the jet element body 9 is provided with a piezoelectric ball movable cavity 16, and the surface of the piezoelectric ball 12 is provided with 6 vortices.
- the rotating blade 13, the right end of the piezoelectric ball 12 is provided with a center, the two ends of the support rod 11 are fixedly installed at the largest diameter of the expansion end of the inner wall of the piezoelectric ball movable cavity 16, and the center of the support rod 11 and The centers are connected, and an aerosol outlet 10 is opened at the center of the right end of the jet element body 9.
- the piezoelectric ball 12 is in the shape of an ellipsoid, the two ends of the piezoelectric ball 12 are different in size, and the scroll blade 13 is installed on the big end of the piezoelectric ball 12, so The vortex blade 12 is to ensure that the gas-liquid mixture is sucked in by the swirling flow of the blade, and at the same time, it can drive the vortex blade 13 to rotate under the action of the high-speed gas-liquid mixed fluid so that the piezoelectric ball 12 follows the rotation, forming a short time for the fluid Acceleration within.
- the piezoelectric ball and the inner wall of the piezoelectric ball movable cavity of the present invention form a Laval tube and the piezoelectric ball tip is connected to the center of the support rod.
- the piezoelectric ball movable cavity 16 The inner wall is a shrinking and expanding tube.
- the outer wall contour of the piezoelectric ball 12 and the inner wall contour of the piezoelectric ball movable cavity 16 are designed according to the Laval tube parameters, in order to ensure that the outer wall of the piezoelectric ball 12 and the piezoelectric ball movable cavity 16 are respectively designed
- the inner wall of the inner wall forms the upper and lower Laval pipe shapes, so that the gas-liquid mixture passes through the formed channel to form the Laval effect, and further accelerates the gas-liquid mixture to supersonic ejection.
- the droplets are electrostatically charged.
- the small head end of the piezoelectric ball 12 is provided with a center, which is connected to the center through the center of the support rod 11. The piezoelectric ball 12 rotates normally.
- the Laval tube streamline schematic diagram of the present invention the Laval tube 3 has an inlet diameter of 12-14mm, a throat diameter of 3-4mm, and an outlet diameter of 9-11mm.
- the airflow passes through the contraction phase and the speed is subsonic, when it passes through the throat, that is, the acceleration phase, it reaches the speed of sound, and when it enters the expansion phase, it is supersonic until it reaches the exit.
- M is the Mach number of the airflow. It can be seen from the formula that when the flow is subsonic and M ⁇ 1, if du>0, then dA ⁇ 0; if du ⁇ 0, then dA>0.
- the gas of a certain pressure enters the Laval tube 3 through the gas inlet 1 and then rapidly accelerates from subsonic speed to supersonic speed, and forms a supersonic gas flow at the exit of the Laval tube.
- a certain shock wave is generated at the entrance. As the pressure in the cavity gradually increases, the shock wave gradually moves away from the entrance end. Therefore, the high-speed airflow ultrasonically vibrates in the stepped resonant cavity 5, which causes the sealing surface 6 of the right resonant tube to also produce ultrasonic vibration.
- the droplets flow from the outlet of the diversion cavity 8 through the liquid inlet 7 to the outer end surface of the closed surface of the resonance tube 6, which promotes the ultrasonic vibration of the droplets and breaks and refines, and the static pressure on the side wall of the resonance body 4 gradually Down, the airflow flows out from the V-shaped resonance tube 15, and the airflow through the air guide hole 14 merges with the liquid droplet at the left end surface of the jet element body 9 to reach the second atomization. Then, the high-speed gas-liquid mixture impacts on the vortex blade 13 and the gas-liquid mixture is screwed in at a high speed, and the piezoelectric ball 12 is driven to rotate rapidly, forming a short-term acceleration of the fluid.
- the piezoelectric material on the surface of the electric ball 12 generates a positive piezoelectric effect, and positive and negative charges appear on the inner and outer surfaces of the piezoelectric material, and then the liquid droplet passes through the surface of the piezoelectric ball 12 and becomes positively charged.
- the high-speed gas-liquid mixture passes through the Laval-shaped channel formed by the outer wall of the piezoelectric ball 12 and the inner wall of the piezoelectric ball movable cavity 16, and accelerates to supersonic speed. Therefore, the droplets further atomize in this process, and finally exceed The mist droplets charged with static electricity at the speed of sound are ejected from the aerosol outlet 10.
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Claims (11)
- 一种气助式静电超声雾化喷头,其特征在于,包括进气套管(2)、拉瓦尔管(3)、谐振体(4)和射流元件体(9);所述进气套管(2)的左端位置设有进气孔(1),进气套管(2)的右端与拉瓦尔管(3)左端相连接,所述拉瓦尔管(3)的右端与谐振体(4)的左端相连接,所述谐振体(4)右端与射流元件体(9)的左端相连接,所述谐振体(4)与射流元件体(9)之间设置有谐振管封闭面(6);所述谐振管封闭面(6)使得谐振体(4)内的气体通过V形谐振管(15)经导气孔(14)进入射流元件体(9);所述谐振体(4)内设置有谐振腔(5),所述谐振体(5)的侧壁设有V形谐振管(15),V形谐振管(15)与射流元件体(9)上开设的导气孔(14)相通,射流元件体(9)上还开设有进液口(7)和导流腔(8),且液体经进液口(7)进入导流腔(8)并被从导气孔(14)进入的气体吹送至旋转装置旋转后经气雾出口(10)喷出。
- 根据权利要求1所述的气助式静电超声雾化喷头,其特征在于,所述旋转装置包括压电小球(12)和涡旋叶片(13);所述压电小球(12)为椭球状且外轮廓涂覆有压电材料;所述压电小球(12)上排布有数个涡旋叶片(13)。
- 根据权利要求1所述的气助式静电超声雾化喷头,其特征在于,所述旋转装置设置在压电小球活动腔(16)内,且旋转装置通过支撑杆(11)支撑;所述压电小球活动腔(16)开设在射流元件体(9)内。
- 根据权利要求2所述的气助式静电超声雾化喷头,其特征在于,所述旋转装置设置在压电小球活动腔(16)内,且旋转装置通过支撑杆(11)支撑;所述压电小球活动腔(16)开设在射流元件体(9)内。
- 根据权利要求3或者4任一项所述的气助式静电超声雾化喷头,其特征在于,所述压电小球活动腔(16)中间段为缩扩管状,压电小球活动腔(16)中间段的左端为渐扩状,压电小球活动腔(16)中间段的右端为锥形渐缩状。
- 根据权利要求4所述的气助式静电超声雾化喷头,其特征在于,所述压电小球(12)的外轮廓与所述压电小球活动腔(16)内壁轮廓按照拉瓦尔管参数设置。
- 根据权利要求1所述的气助式静电超声雾化喷头,其特征在于,所述谐振腔(5)为阶梯型,所述谐振腔(5)的左端直径为9~11mm,中间段直径为5~7mm,右端扩张端直径为8~10mm。
- 根据权利要求1所述的气助式静电超声雾化喷头,其特征在于,所述进液口(7)与导气孔(14)上下相对设置。
- 根据权利要求1所述的气助式静电超声雾化喷头,其特征在于,所述导流腔(8)出液口与谐振管封闭面(6)之间留有间隙,且间隙为1~2mm;所述导流腔(8)的上下壁面高 度差为2~3mm。
- 根据权利要求2所述的气助式静电超声雾化喷头,其特征在于,所述涡旋叶片(13)的扭转角设为45°。
- 根据权利要求2或者4或者10所述的气助式静电超声雾化喷头的工作方法,其特征在于,一定压力的气体经进气孔(1)进入拉瓦尔管(3)后迅速由亚音速加速至超音速,在拉瓦尔管(3)的出口形成超音速气流,随后超音速气流进入阶梯型谐振腔(5),同时在谐振腔(5)入口产生一定的冲击波,由于腔内的压力逐渐增大,冲击波逐渐向背离入口端方向运动,因此高速气流在阶梯型谐振腔(5)内超声振动,导致右侧谐振管封闭面(6)也产生超声振动,同时液滴经过进液口(7)从导流腔(8)出口流至谐振管封闭面(6)的外端面,促使液滴产生超声振动而破碎细化,进而由于谐振体(4)侧壁管口的静压力逐渐下降,使得气流从V形谐振管(15)流出,经导气孔(14)气流在射流元件体(9)的左端面处与液滴汇合后达到第二次雾化,随后,高速气液混合体冲击在涡旋叶片(13)上而使得气液混合体被高速旋入,同时带动压电小球(12)快速转动,对流体形成一个短时间内的加速,此时对压电小球(12)的表面产生一定的压力,使得压电小球(12)表面的压电材料产生正压电效应,在压电材料的内外面上出现正负相反的电荷,进而液滴经过压电小球(12)表面后带上正电;同时,高速的气液混合体经过压电小球(12)外壁与压电小球活动腔(16)内壁所形成的拉瓦尔状通道,而加速至超音速,因此雾滴在此过程进一步雾化,最后超音速带静电的雾滴从气雾出口(10)喷出。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US17/607,412 US11548028B2 (en) | 2020-06-24 | 2021-06-24 | Air-assisted electrostatic ultrasonic atomization nozzle and method |
GB2216991.6A GB2609370B (en) | 2020-06-24 | 2021-06-24 | Air-assisted electrostatic ultrasonic atomization nozzle and method |
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CN202010587848.4A CN111889292B (zh) | 2020-06-24 | 2020-06-24 | 一种气助式静电超声雾化喷头及方法 |
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CN115722357A (zh) * | 2022-12-07 | 2023-03-03 | 成都理工大学 | 一种模块化超声静电喷涂设备及其方法 |
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CN111889292B (zh) | 2020-06-24 | 2021-06-22 | 江苏大学 | 一种气助式静电超声雾化喷头及方法 |
CN112587614A (zh) * | 2020-12-28 | 2021-04-02 | 安徽千草源生态农业开发有限公司 | 一种黄精蒸晒器 |
CN112656894A (zh) * | 2020-12-28 | 2021-04-16 | 安徽千草源生态农业开发有限公司 | 一种黄精加工的蒸晒装置 |
CN112808478B (zh) * | 2020-12-30 | 2022-07-12 | 浙江工业大学 | 一种协同增强双流体雾化性能的装置及方法 |
CN113019735B (zh) * | 2021-05-10 | 2022-04-19 | 中国矿业大学 | 一种用于降尘的旋转内混式梯级增强雾化装置 |
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CN113877885A (zh) * | 2021-09-28 | 2022-01-04 | 江苏长沐智能装备有限公司 | 干式超声波清洗除尘设备 |
CN113908647B (zh) * | 2021-11-15 | 2024-04-09 | 辽宁工程技术大学 | 一种超音速自螺旋微雾降尘装置 |
CN114345571B (zh) * | 2021-12-23 | 2023-02-17 | 江苏大学 | 一种气助式超声磁化静电喷头 |
CN117324140B (zh) * | 2023-12-01 | 2024-03-26 | 江苏科鼐生物制品有限公司 | 酶催化合成植物甾醇酯的雾化喷头 |
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