CN114950830A - Ultrasonic atomizer and atomization method - Google Patents

Abstract

The application discloses ultrasonic atomizer and atomizing method, include: the atomizing part comprises a mist outlet, a bottom wall and a side wall, the bottom wall and the side wall enclose to form an atomizing cavity, and the mist outlet is positioned at one end far away from the bottom wall; a transducer connected to the bottom wall. The lateral wall is equipped with the feed liquor hole near diapire department, and liquid gets into the atomizing chamber through the feed liquor hole and spreads and attach to the inner wall of atomizing spare, and the liquid that gets into the atomizing chamber is atomized under transducer ultrasonic vibration's effect, and the liquid after the atomizing is discharged from a fog mouth. This application has the efficient advantage of atomizing.

Description

Ultrasonic atomizer and atomization method

Technical Field

The application relates to the technical field of ultrasonic waves, in particular to an ultrasonic atomizer and an atomizing method.

Background

Ultrasonic liquid atomization is that the mechanical energy of ultrasonic waves is utilized to break up liquid and directly form fine water drops. Ultrasonic liquid atomization requires two necessary conditions. Firstly, ultrasonic vibration is needed; secondly, the atomized liquid should be spread evenly on the vibrating surface, and should not be too thin or too thick. Too thin, affects the atomization yield; too thick, affects atomization efficiency. Moreover, with the atomization of the existing liquid, there is also a need for a continuous replenishment of liquid.

The current atomizer has the following defects: first, there is not a sufficiently large ultrasonic vibration plane. Secondly, uniform spreading and replenishment of the liquid is difficult, and this spreading requires that the liquid be as natural as possible and that the thickness of the liquid be controllable. Third, the mist generated by atomization is difficult to collect. The larger the atomization area, the more difficult it is to collect efficiently. Because of the above problems with the current atomizers, the atomization efficiency of the ultrasonic atomizers is low.

In view of the above problems, it is necessary to develop a high-efficiency ultrasonic atomizer and an atomizing method.

Disclosure of Invention

In order to solve the technical problem that the atomization efficiency of the ultrasonic atomizer is low, the application provides an ultrasonic atomizer.

The application provides an ultrasonic nebulizer adopts following technical scheme: an ultrasonic atomizer comprising: the atomizing part comprises a mist outlet, a bottom wall and a side wall, the bottom wall and the side wall enclose to form an atomizing cavity, and the mist outlet is positioned at one end far away from the bottom wall; the transducer is connected with the bottom wall; wherein, the lateral wall is equipped with the feed liquor hole near diapire department, and liquid gets into the atomizing chamber through the feed liquor hole and spreads and attach to the inner wall of atomizing spare, and the liquid that gets into the atomizing chamber is atomized under transducer ultrasonic vibration's effect, and the liquid after the atomizing is discharged from a fog mouth.

Through adopting above-mentioned technical scheme, solved in the past the ultrasonic nebulizer atomization inefficiency and the liquid dispersion after the atomizing is difficult to the problem of collecting. The prior ultrasonic atomizer atomizes in an open space, and the liquid atomizing position is on the outer surface of an ultrasonic emitting head. This technical scheme ultrasonic atomizer diapire and lateral wall enclose to close and form the atomizing chamber, and the one end of diapire is kept away from to the fog mouth, and liquid atomizing's position is at the internal surface of ultrasonic atomization spare. The first advantage brought is: the problem that liquid spreads on the surface of the atomization piece is solved, and a technician with knowledge of fluid mechanics can easily design the flow track of the liquid so as to realize the effect that the liquid uniformly adheres to and flows on the inner surface of the atomization piece. The second advantage is that: liquid atomizes in the atomizing intracavity, and because the isolation protection effect of lateral wall, the ultrasonic atomization receives external interference and has also reduced greatly. The third advantage is that: because the bottom wall and the side wall enclose to form the atomizing cavity, the mist outlet is positioned at one end far away from the bottom wall, atomized liquid is intensively discharged from the mist outlet, and the problem of mist collection is also solved. The fourth advantage is that: if mist is condensed in the process of atomizing the liquid in the atomizing cavity, the condensed liquid falls back to the inner wall of the atomizing part and can be atomized again, and the recycling efficiency is improved.

In a further scheme, the ultrasonic atomizer further comprises an air inlet hole, the air inlet hole is located at the position, close to the bottom wall, of the side wall, and air enters the atomizing cavity from the air inlet hole and brings out atomized liquid from the mist outlet.

Through adopting above-mentioned technical scheme, the air that gets into from the air inlet can in time be followed the fog mouth and discharged the atomizing liquid in the atomizing cavity, has improved fog efficiency. The speed of fog outlet fog can be controlled by controlling the flow rate of air entering the atomizing cavity, different air flow rates can be adjusted according to different use scenes, and diversified requirements are met.

In a further scheme, the ultrasonic atomizer further comprises an amplitude transformer, and the transducer is connected with the bottom wall through the amplitude transformer.

By adopting the technical scheme, the vibration transmission efficiency can be improved, and the vibration is transmitted to the atomization piece in a concentrated manner, so that the liquid in the atomization cavity is strongly vibrated and rapidly atomized, and the atomization effect is improved.

In a further scheme, the transducer is used for driving the atomizing piece to generate longitudinal vibration and transverse vibration.

Through adopting above-mentioned technical scheme, can make the liquid that gets into the atomizing intracavity spread out along the inner wall circumference of atomizing under the transverse vibration effect, the liquid that spreads out in circumference flows to the fog mouth direction along the inner wall under the effect of longitudinal vibration to this will be liquid attached to the inner wall of whole atomizing piece and do not deviate from the inner wall, and then enlarged atomizing area, improved atomization efficiency through make full use of inner wall area. The existing ultrasonic atomizer fully utilizes longitudinal vibration to reduce or avoid transverse vibration as much as possible, the technical scheme can control the thickness of the liquid attached to the inner wall by adjusting the frequency and amplitude of the longitudinal vibration and the transverse vibration and controlling the flow of the liquid, thereby controlling the thickness of atomized particles and the atomization amount.

In a further scheme, the length of the atomization piece is integral multiple of half wavelength of vibration of the transducer.

By adopting the technical scheme, the atomizer can be ensured to work stably, reliably and efficiently. According to the working principle of resonance, when the length of the atomizing part is integral multiple of half-wavelength of ultrasonic waves, the blocking to sound waves is minimum, so that the strength of multi-stage effects such as strong cavitation effect, mechanical vibration, disturbance effect, high acceleration, emulsification, diffusion, crushing, stirring and the like generated by ultrasonic radiation pressure reaches the peak value, and the motion frequency and speed of substance molecules are increased. The longer the length, the greater the internal surface area. I.e. the larger the working area of the atomization, the higher the atomization yield.

In order to solve the technical problem of low atomization efficiency of the atomizer, the application also provides an ultrasonic atomization method.

The application provides an ultrasonic atomization method, which adopts the following technical scheme: an ultrasonic atomization method is suitable for the ultrasonic atomizer, and comprises the steps that a transducer applies ultrasonic vibration to an atomization member to drive the atomization member to generate longitudinal vibration and transverse vibration; liquid enters the atomizing cavity at a certain angle, and under the combined action of flow velocity, surface tension and gravity, the liquid spreads from the liquid inlet hole to the mist outlet along the inner wall of the atomizing part, and is atomized in the flowing process under the longitudinal vibration and the transverse vibration of the transducer.

Through adopting above-mentioned technical scheme, can make the liquid that gets into the atomizing intracavity under the combined action of transverse vibration, velocity of flow, surface tension and gravity, spread along the inner wall circumference of atomizing piece, the liquid that spreads out in circumference flows to the fog outlet direction along the inner wall under longitudinal vibration's effect to this with liquid attached to the inner wall of whole atomizing piece on not deviating from the inner wall, enlarged atomizing area, improved atomization efficiency through make full use of inner wall area. The existing ultrasonic atomizer fully utilizes longitudinal vibration to reduce or avoid transverse vibration as much as possible, the technical scheme can control the thickness of the liquid attached to the inner wall by adjusting the frequency and amplitude of the longitudinal vibration and the transverse vibration and controlling the flow of the liquid, thereby controlling the thickness of atomized particles and the atomization amount.

In a further aspect, the line of direction of the liquid entering the atomizing chamber is at an acute angle to the axis of the atomizing chamber.

Through adopting above-mentioned technical scheme, the direction and the kinetic energy of make full use of liquid entering atomizing chamber let liquid spread out at the inner wall and come the abundant atomizing at the internal surface in atomizing chamber. The liquid is not separated from the inner surface of the atomizing cavity to fly in the air.

In a further scheme, air with a certain flow enters the atomizing cavity, the air entering the atomizing cavity flows from the bottom wall to the direction of the mist outlet, and atomized liquid is taken out from the mist outlet.

Through adopting above-mentioned technical scheme, the air that gets into from the air inlet can in time be followed the fog mouth and discharged the atomizing liquid in the atomizing cavity, has improved fog efficiency. The speed of fog outlet fog can be controlled by controlling the flow rate of air entering the atomizing cavity, different air flow rates can be adjusted according to different use scenes, and diversified requirements are met.

According to a further scheme, the included angle between the direction line of the liquid entering the atomizing cavity and the axis of the atomizing cavity is 10-90 degrees.

Through adopting above-mentioned technical scheme, let liquid get into the atomizing chamber towards a fog mouth direction with 10 ~ 90 degrees contained angles, can guarantee that liquid has a minute speed to spread out along inner wall circumference and has a minute speed to flow towards a fog mouth direction simultaneously to this guarantees that whole inner wall is paved with liquid, high-efficient abundant atomizing. The included angle between the direction line of the liquid entering the atomizing cavity and the axis of the atomizing cavity can be the same plane or the included angle of the space.

In a further scheme, the direction of air entering the atomizing cavity is consistent with the direction of liquid entering the atomizing cavity.

Through adopting above-mentioned technical scheme, can let liquid more spread the inner wall more easily, also more do benefit to in time being taken out the atomizing chamber by the air with the atomizing liquid that gets into the atomizing chamber in advance, reduce the concentration of the atomizing liquid in the atomizing chamber, reduce the resistance that liquid flows.

In summary, the present application has at least one of the following beneficial technical effects:

1. this application is atomized through the liquid to the atomizing intracavity, has solved in the past the liquid dispersion of ultrasonic atomization ware atomization inefficiency and atomizing back is difficult to the problem of collecting.

2. This application is through setting up the inlet port, and the air that gets into from the inlet port can in time be discharged the atomizing liquid in the atomizing cavity from a fog mouth, has improved fog efficiency.

3. This application is equipped with the amplitude transformer and can produces longitudinal vibration and transverse vibration to this is with liquid adhesion on the inner wall of whole atomizing piece not deviate from the inner wall, make full use of inner wall area and then enlarged atomizing area, improved atomization efficiency.

4. The length of atomizing piece has been set for in this application, can guarantee that the atomizer is stable, reliable, work high-efficiently.

5. This application is through having set for direction and the angle that air and liquid got into the atomizing chamber to make full use of liquid gets into the direction and the kinetic energy in atomizing chamber, at the internal surface in atomizing chamber, lets liquid spread out at the inner wall and come the abundant atomizing. The air entering from the air inlet hole can discharge the atomized liquid in the atomization cavity from the mist outlet in time, so that the mist outlet efficiency is improved.

Drawings

FIG. 1 is a schematic view, partially in cross-section, of a first embodiment of an ultrasonic atomizer according to the present application;

FIG. 2 is a schematic view, partially in cross-section, of a second embodiment of an ultrasonic atomizer according to the present application;

FIG. 3 is a schematic view, partially in cross-section, of a third embodiment of an ultrasonic atomizer according to the present application;

FIG. 4 is a schematic drawing in partial cross-section of a fourth embodiment of an ultrasonic atomizer according to the present application;

FIG. 5 is a schematic view, partially in cross-section, of an embodiment five of an ultrasonic atomizer according to the present application;

FIG. 6 is a schematic drawing in partial cross-section of a sixth embodiment of an ultrasonic atomizer according to the present application;

FIG. 7 is a schematic drawing in partial cross-section of a seventh embodiment of an ultrasonic atomizer according to the present application;

FIG. 8 is a schematic drawing in partial cross-section of an eighth embodiment of an ultrasonic atomizer according to the present application;

FIG. 9 is a schematic view in partial cross-section of an embodiment nine of an ultrasonic atomizer according to the present application.

In the drawings:

1. a transducer; 2. an amplitude transformer; 3. a liquid inlet hole; 4. a side wall; 5. a mist outlet; 6. an inner wall; 7. an atomizing chamber; 8. an air inlet; 9. a bottom wall; 10. an annular groove; 11. a helical groove; alpha, liquid incident angle; β, angle of incidence of air.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

Example one

Referring to fig. 1, the present embodiment discloses an ultrasonic atomizer, which includes a transducer 1, a horn 2 and an atomizing element, the atomizing element includes a bottom wall 9, a side wall 4 and a mist outlet 5 as shown in the cross section of the drawing, the bottom wall 9 and the side wall 4 enclose to form an atomizing chamber 7, and the mist outlet 5 is located at an end far from the bottom wall 9. The transducer 1 is connected with the atomizing part through the amplitude transformer 2, and the connection mode can be an integral forming mode, or can be a split forming mode and then is fixed into a whole through welding or fastening bolts. A liquid inlet hole 3 and an air inlet hole 8 are arranged on the side wall 4, and the liquid inlet hole 3 and the air inlet hole 8 are oppositely arranged and are close to one end of the bottom wall 9. The atomizing cavity 7 is in a circular truncated cone shape, the diameter of the atomizing cavity close to the bottom wall 9 is small, and the diameter of the atomizing outlet 5 is large. The included angle between the axis of the liquid inlet hole 3 and the axis of the atomizing cavity 7 is 90 degrees, and in the actual design, the included angle can be in the range of 10 degrees to 90 degrees, and the optimal range is 30 degrees to 80 degrees. The included angle between the axis of the air inlet hole 8 and the axis of the atomizing cavity 7 is 90 degrees, and in the actual design, the included angle can be in the range of 10 degrees to 90 degrees, but the air inlet direction is consistent with the liquid inlet direction, namely the direction of the air inlet hole is towards the mist outlet 5. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

By controlling the pressure of the liquid entering and the shape, size and angle of the liquid inlet hole 3, the liquid can be designed to be uniformly distributed in a spiral shape along the inner wall 6 and to advance. The thickness of the liquid layer can also be adjusted by controlling the pressure of the liquid entering and the shape and angle of the liquid inlet hole 3. The ultrasonic wave longitudinal vibration, under the prerequisite that atomizing spare wall thickness is enough, length can increase by times, as long as ultrasonic energy is enough, the ultrasonic wave pipeline of longitudinal vibration can be 5 times or 10 times long. The longer the length, the greater the surface area inside the nebulization chamber 7. That is to say, the larger the working surface for atomization, the higher the atomization yield and the higher the atomization efficiency.

The liquid inlet holes 3 can be opened in a plurality of ways according to actual needs, can be circumferentially and uniformly distributed, and can also be arranged in other ways without uniform distribution.

In practice, the length of the nebulizing element is an integer multiple of the half-wavelength of the vibration of the transducer 1. Preferred configurations of the atomizer length and half wavelength and frequency for both 20kHz and 15kHz frequencies are used as examples:

the working principle of the ultrasonic atomizer of the embodiment is as follows: the transducer 1 generates ultrasonic longitudinal vibration, the ultrasonic longitudinal vibration is amplified by the amplitude transformer 2 to form longitudinal vibration and transverse vibration, the amplitude transformer 2 transmits the longitudinal vibration and the transverse vibration to the bottom wall 9, the bottom wall 9 transmits the ultrasonic vibration to the side wall 4, and the longitudinal vibration and the transverse vibration are formed on the side wall 4. Liquid enters the atomizing cavity 7 from the liquid inlet hole 3, and under the combined action of ultrasonic vibration, flow velocity, surface tension and gravity, the liquid spreads and flows from the liquid inlet hole 3 to the mist outlet 5 along the inner wall 6 of the atomizing part, and under the longitudinal vibration and the transverse vibration of the side wall 4, the liquid is atomized and spreads to the mist outlet 5 in the flowing process. Air enters the atomizing chamber 7 from the air inlet hole 8 and flows towards the mist outlet 5, and atomized liquid is accelerated by the air in the atomizing chamber 7 and is carried out from the mist outlet 5 as shown by a dotted arrow in the figure. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

Example two

Referring to fig. 2, the present embodiment discloses another structure of an ultrasonic atomizer, which is different from the first embodiment in that the atomizing chamber 7 of the present embodiment is cylindrical, that is, the diameter of the inner wall 6 is the same. The diameter of the atomization piece is 0.15-0.25 times of the vibration wavelength of the transducer 1. The diameter range of the designed atomizing member and the corresponding relationship between the frequency and the wavelength are as follows:

diameter range mm	20～80	25～100	10～50
				Optimal diameter range mm	38～55	40～70	25～40
Frequency kHz	20	15	28
				Wavelength mm	240	320	170

EXAMPLE III

Referring to fig. 3, the third structure of the ultrasonic atomizer is disclosed in this embodiment, which is different from the second embodiment in that the inner wall 6 is provided with annular grooves 10, and the annular grooves 10 are uniformly distributed along the inner wall 6 in the axial direction. The annular groove 10 is designed to facilitate the formation of a uniform spreading of the liquid, with a longitudinal section, i.e. an axial section, having a peak-to-peak value of 1mm, a sinusoidal wave with a wavelength of 6mm, and a cross section, i.e. a radial section, having a circular shape. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

Example four

Referring to fig. 4, this embodiment discloses a fourth structure of the ultrasonic atomizer, which is different from the third embodiment in that the groove of the inner wall 6 is a spiral groove 11 extending from the bottom wall 9 to the mist outlet 5. The spiral groove 11 is designed to facilitate the formation of a uniform spreading shape of the liquid, the longitudinal section, i.e. the axial section, is a sine wave with a peak value of 1mm and a wavelength of 6mm, and the cross section, i.e. the radial section, is a circle. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

EXAMPLE five

Referring to fig. 5, the fifth structure of the ultrasonic atomizer is disclosed in this embodiment, which is different from the second embodiment in that the angles of the liquid inlet hole 3 and the air inlet hole 8 are different. The included angle between the axis of the liquid inlet hole 3 and the axis of the atomizing cavity 7, namely the liquid incidence angle alpha, is in the range of 10 degrees to 90 degrees, and the optimal range is 30 degrees to 80 degrees. The included angle between the axis of the air inlet hole 8 and the axis of the atomizing chamber 7, i.e. the air incidence angle β in the drawing, is in the range of 10 degrees to 90 degrees, and the air inlet direction and the liquid inlet direction are the same, i.e. both directions are toward the mist outlet 5. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

EXAMPLE six

Referring to fig. 6, the sixth structure of the ultrasonic atomizer is disclosed in the present embodiment, which is different from the fifth structure in that the liquid inlet hole 3 and the air inlet hole 8 are located on the same side and in the same direction at the lower portion of the atomizing chamber 7. The air inlet hole 8 is close to one side of the bottom wall 9, and the liquid inlet hole 3 is close to one side of the mist outlet 5. The included angle between the axis of the liquid inlet hole 3 and the axis of the atomizing cavity 7, namely the liquid incidence angle alpha, is in the range of 10 degrees to 90 degrees, and the optimal range is 30 degrees to 80 degrees. The angle between the axis of the air inlet opening 8 and the axis of the atomising chamber 7, i.e. the angle of incidence of the air beta in the illustration, is in the range 10 to 90 degrees. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

EXAMPLE seven

Referring to fig. 7, the seventh structure of the ultrasonic atomizer is disclosed in this embodiment, which is different from the sixth structure in that the liquid inlet hole 3 and the air inlet hole 8 are located differently, the liquid inlet hole 3 is located near the bottom wall 9, and the air inlet hole 8 is located near the mist outlet 5. The included angle between the axis of the liquid inlet hole 3 and the axis of the atomizing cavity 7, namely the liquid incidence angle alpha, is in the range of 10 degrees to 90 degrees, and the optimal range is 30 degrees to 80 degrees. The axis of the air inlet hole 8 and the axis of the atomizing chamber 7 form an included angle, i.e. the air incident angle beta in the figure is in the range of 10 degrees to 90 degrees. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

Example eight

Referring to fig. 8, this embodiment discloses an eighth structure of an ultrasonic atomizer, which is different from the seventh embodiment in that the liquid inlet hole 3 and the air inlet hole 8 are located at the upper part of the atomizing chamber 7. The liquid inlet hole 3 is close to one side of the bottom wall 9, and the air inlet hole 8 is close to one side of the mist outlet 5. The included angle between the axis of the liquid inlet hole 3 and the axis of the atomizing cavity 7, namely the liquid incidence angle alpha, is in the range of 10 degrees to 90 degrees, and the optimal range is 30 degrees to 80 degrees. The angle between the axis of the air inlet opening 8 and the axis of the atomising chamber 7, i.e. the angle of incidence of the air beta in the illustration, is in the range 10 to 90 degrees. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

Example nine

Referring to fig. 9, the ninth structure of the ultrasonic atomizer is disclosed in the present embodiment, which is different from the eighth embodiment in that the liquid inlet hole 3 and the air inlet hole 8 are located differently, the air inlet hole 8 is located on one side of the bottom wall 9, and the liquid inlet hole 3 is located on one side of the mist outlet 5. The included angle between the axis of the liquid inlet hole 3 and the axis of the atomizing cavity 7, namely the liquid incidence angle alpha, is in the range of 10 degrees to 90 degrees, and the optimal range is 30 degrees to 80 degrees. The angle between the axis of the air inlet opening 8 and the axis of the atomising chamber 7, i.e. the angle of incidence of the air beta in the illustration, is in the range 10 to 90 degrees. In the figure, solid arrows indicate the flow direction of liquid, and dashed arrows indicate the flow direction of air.

In the specific implementation process, there are many other combined implementations, for example, the annular groove in example three can be respectively combined with example five, six, seven, eight and nine, and the spiral groove in example four can also be respectively combined with example five, six, seven, eight and nine to form a new implementation, which is not illustrated here.

Referring to fig. 1 to 9, in the present embodiment, an ultrasonic atomization method is provided, in which an ultrasonic transducer 1 is first activated, the transducer 1 converts electrical energy into mechanical vibration by using a piezoelectric effect of piezoelectric ceramics having the same resonant frequency as the transducer, and the mechanical vibration is then transmitted to an atomization member through an amplitude transformer 2 to generate longitudinal vibration and transverse vibration. Liquid with a certain flow velocity enters the atomizing cavity 7 from the liquid inlet hole 3 at a liquid incidence angle alpha in each embodiment, and under the combined action of longitudinal and transverse vibration, flow velocity, surface tension and gravity of the side wall 4, the liquid spreads and flows from the liquid inlet hole 3 to the mist outlet 5 along the inner wall 6 of the atomizing member, and is atomized in the flowing process of the liquid along the inner wall 6, and the atomized liquid is diffused in the atomizing cavity 7. Air with a certain flow enters the atomizing cavity 7 from the air inlet hole 8, the air entering the atomizing cavity 7 flows from the bottom wall 9 to the direction of the mist outlet 5, and the atomized liquid in the atomizing cavity 7 is taken out from the mist outlet 5 in the air flowing process. The atomized condensed liquid drops on the inner wall 6, is atomized again under the action of internal longitudinal vibration and transverse vibration, and is carried out from the mist outlet 5 by air after being atomized.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only for the purpose of illustrating the principles of the invention, but that there are many variations, modifications, substitutions and alterations without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims (10)

1. An ultrasonic atomizer, comprising:

the atomizing part comprises a mist outlet (5), a bottom wall (9) and a side wall (4), the bottom wall (9) and the side wall (4) enclose to form an atomizing cavity (7), and the mist outlet (5) is located at one end far away from the bottom wall (9);

a transducer (1), said transducer (1) being connected to said bottom wall (9);

wherein, lateral wall (4) are close to diapire (9) department and are equipped with feed liquor hole (3), and liquid gets into atomizing chamber (7) through feed liquor hole (3) and spreads and attach to inner wall (6) of atomizing spare, and the liquid that gets into atomizing chamber (7) is atomized under transducer (1) ultrasonic vibration's effect, and the liquid after the atomizing is discharged from fog outlet (5).

2. An ultrasonic nebulizer as claimed in claim 1, further comprising an air inlet hole (8), wherein the air inlet hole (8) is located on the side wall (4) near the bottom wall (9), and air enters the nebulization chamber (7) from the air inlet hole (8) and carries nebulized liquid out of the mist outlet (5).

3. An ultrasonic nebulizer as claimed in claim 1, further comprising an amplitude transformer (2), the transducer (1) being connected to the bottom wall (9) by the amplitude transformer (2).

4. An ultrasonic nebulizer as claimed in claim 1, characterised in that the transducer (1) is adapted to drive the nebulizing element in longitudinal and transverse vibrations.

5. An ultrasonic nebulizer as claimed in claim 4, characterised in that the length of the nebulizing element is an integer multiple of half the wavelength of the vibration of the transducer (1).

6. An ultrasonic atomizing method which is applied to the ultrasonic atomizer according to any one of claims 1 to 5, said atomizing method comprising:

the energy converter (1) applies ultrasonic vibration to the atomization piece to drive the atomization piece to generate longitudinal vibration and transverse vibration;

liquid enters the atomizing cavity (7) at a certain angle, and spreads and flows from the liquid inlet hole (3) to the mist outlet (5) along the inner wall (6) of the atomizing piece under the combined action of flow velocity, surface tension and gravity;

under the action of longitudinal vibration and transverse vibration of the transducer (1), the liquid is atomized in the flowing process.

7. An ultrasonic atomisation process according to claim 6 characterised in that the line of direction of the liquid entering the atomising chamber (7) is at an acute angle to the axis of the atomising chamber (7).

8. An ultrasonic atomization method according to claim 6, characterized in that a certain flow rate of air enters the atomization chamber (7), and the air entering the atomization chamber (7) flows from the bottom wall (9) in the direction of the mist outlet (5) to carry atomized liquid out of the mist outlet (5).

9. An ultrasonic atomization method according to claim 7, characterized in that the angle between the direction line of the liquid entering the atomization chamber (7) and the axis of the atomization chamber (7) is 10-90 degrees.

10. An ultrasonic atomisation process according to claim 8 characterised in that the direction of air entering the atomising chamber (7) is coincident with the direction of liquid entering the atomising chamber (7).

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