CN101168148A - Water mist generator - Google Patents

Abstract

A water mist generator for atomizing a liquid and being applied to an atomizing device having through holes, the water mist generator comprising: an oscillating element having a first through hole corresponding to the through hole; a nozzle plate having a plurality of nozzles corresponding to the first through holes and connected to the oscillating element; and a structural element, a second through hole is arranged corresponding to the plurality of spray holes of the spray hole sheet and is connected with the spray hole sheet, so that the spray hole sheet is fixed between the oscillating element and the structural element, and the combined oscillating element, the spray hole sheet and the structural element are arranged in the accommodating space of the atomization device, so that liquid can be atomized through the spray holes of the spray hole sheet. The present invention provides a water mist generator, which has a structure substantially the same as that of the water mist generator, except that the oscillation element is provided with an elastic body. The invention can eliminate noise, prolong the service life of the jet orifice plate and avoid the drift of working frequency.

Description

mist generator

technical field

The present invention relates to a water mist generator, in particular to a water mist generator capable of eliminating noise, increasing the service life of orifice plates, avoiding working frequency drift and improving atomization efficiency.

Background technique

There are two kinds of water mist generators on the market: pressure type and mechanical vibration type. The former uses the pressure difference to atomize the liquid. Although it can achieve the effect of a large amount of atomization, the disadvantages are that the particles are large, a machine for increasing the pressure is required, and the noise of the pressure type is relatively large. For medical water mist generators, there is no need for such a large amount of atomization, and the requirements for particle size are very important, so pressure-type water mist generators are gradually unsuitable for medical use. In recent years, the medical water mist generators are mainly of the mechanical vibration type, and most of them use the ultrasonic vibration generated by the piezoelectric material to atomize the liquid, but this atomization method has its disadvantages, such as: power consumption If the amount is large, the fan is required to provide the mist transmission direction, etc.

Among the water mist generators based on piezoelectric materials, in addition to the above-mentioned ultrasonic atomization method, there are also water mist generators that are used with orifice sheets. After adding the orifice sheet, the electric energy used can be greatly reduced, and the particle size can be controlled through the effect of the aperture. At present, related patents or products can be roughly divided into two categories: one is to use piezoelectric material to vibrate the liquid out of the nozzle hole to form mist, and the other is to use piezoelectric material to vibrate the nozzle hole to actively push the liquid. The liquid is discharged from the spray hole to form a mist. The former requires a lot of energy to drive the piezoelectric material to vibrate for the generation of small-particle droplets, so that the liquid can be squeezed out and atomized. In terms of efficiency, it is slightly lower than the latter; while the orifice plate of the latter is an active vibration component , prone to fatigue problems. The phenomena caused by it include noise when there is no liquid air shock, large vibration area of the nozzle orifice plate easily reduces service life, working frequency will drift after air shock, and atomization efficiency is low.

The water mist generator 60 of the atomization device of general active vibrating element, comprises an oscillating element 70 and orifice plate 80, as shown in Figure 6, this orifice plate 80 drives aforementioned orifice plate 80 to vibrate by this oscillating element 70, Because the aforementioned orifice sheet 80 exerts a squeezing effect on the liquid through vibration, the liquid is discharged from the aforementioned orifice 81 to form a mist.

However, in the process of atomization, because the orifice plate is bonded to the vibrating element, when vibrating, the entire orifice plate will vibrate together, which increases the vibrating area of the orifice plate and causes the orifice plate to vibrate. It is easy to have the problem of fatigue, and at the same time increases the load of the orifice sheet, which makes the atomization efficiency low.

To sum up, how to reduce the vibration area of the orifice plate during the atomization process, increase the service life, improve the atomization efficiency, and avoid the drift of the working frequency is an urgent problem to be solved in the industry.

Contents of the invention

The object of the present invention is to provide a water mist generator capable of eliminating noise.

Another object of the present invention is to provide a water mist generator that improves the service life of the orifice plate.

Another object of the present invention is to provide a water mist generator that avoids shifting of working frequency.

Another object of the present invention is to provide a water mist generator that improves atomization efficiency.

In order to achieve the above purpose, the water mist generator is used to atomize a liquid, and is applied to an atomization device with accommodating space and through holes. The water mist generator includes: an oscillating element, corresponding to the aforementioned through holes, a a first perforation; a nozzle hole sheet, which is provided with a plurality of nozzle holes corresponding to the first hole, and is connected with the vibration element; and a structural element, which is provided with a second hole corresponding to the plurality of nozzle holes of the nozzle hole sheet, and Connect with the aforementioned orifice sheet, fix the aforementioned orifice sheet between the aforementioned oscillating element and the structural element, and place the combined oscillating element, orifice sheet, and structural element in the accommodating space of the aforementioned atomizing device, through The aforementioned oscillating element generates oscillating kinetic energy to make the liquid pass through the nozzle holes of the nozzle plate to generate atomization.

The aforementioned body may further include a water injection port for injecting the aforementioned liquid to be atomized into the aforementioned cavity. And the aforementioned oscillating element is a piezoelectric film. The aforementioned structural elements are made of plastic materials.

Wherein, the aforementioned oscillating element is provided with an elastic body, the material of the aforementioned elastic body is selected from a plastic material, and the aforementioned orifice plate is fixed between the aforementioned oscillating element and the structural element by glue.

The vibration element is provided with a first perforation corresponding to the through hole, and the nozzle plate is provided with a plurality of nozzles corresponding to the first perforation, and the structural element is provided with a second perforation corresponding to the plurality of nozzles. A diameter of the second through hole is smaller than a diameter of the first through hole.

And the above-mentioned second perforation can be in the shape of a bowl, rounded corners or chamfered corners.

According to the above scheme, the effect of the present invention compared with the prior art is remarkable: when the water mist generator of the present invention operates, it can limit the vibration area of the orifice plate, and stop the vibration of the surrounding area that is not helpful to the atomization action. , so that the energy is concentrated in the central area, so that the atomization rate will increase, and it will also save energy. Compared with the orifice sheet of the prior art, the orifice sheet of the present invention increases the reinforcement of structural elements, so that The strength of the overall structure is increased, so that the surrounding area of the orifice will not fall off due to repeated vibrations, and the problem of water seepage will be solved. Because the vibration area of the orifice is limited to the center, there are fewer areas subject to fatigue effects. Therefore, the rupture of the orifice sheet is less likely to occur during air vibration, and the service life of the orifice sheet is long.

Description of drawings

FIG. 1 is an exploded perspective view of the water mist generator of the present invention applied to an atomization device.

Fig. 2 is a side sectional view of the water mist generator of the present invention applied to an atomization device.

Fig. 3A is a side sectional view of another embodiment of the structural elements of the water mist generator of the present invention.

Fig. 3B is a side sectional view of still another embodiment of the structural elements of the water mist generator of the present invention.

Fig. 3C is a side sectional view of yet another embodiment of the structural elements of the water mist generator of the present invention.

FIG. 4A is a schematic waveform diagram of the air shock recovery of the water mist generator according to the embodiment of the present invention.

FIG. 4B is a schematic waveform diagram of the air shock recovery of the conventional water mist generator.

FIG. 5 is a side sectional view of another embodiment of the present invention in which the water mist generator is applied to an atomization device.

Fig. 6 is a side sectional view of a conventional water mist generator.

Description of main component symbols

100---atomization device 10----body

11----Cavity 12----Accommodating space

13----through hole 14----water injection port

20----water mist generator 30----oscillating element

31----the first perforation 40----nozzle sheet

41----nozzle hole 50----structural element

51----second perforation 60----elastomer

Detailed ways

While the invention will be fully described with reference to the accompanying drawings, which contain examples of the invention, it should be understood before proceeding that those skilled in the art may modify the invention described herein while still obtaining the benefits of the invention. Therefore, it should be understood that the following description is a broad disclosure for those skilled in the art, and its content is not intended to limit the present invention.

Please refer to FIG. 1 , which is an exploded perspective view of the water mist generator of the present invention applied to an atomization device. The water mist generator 20 of the present invention comprises an oscillating element 30, a spray hole sheet 40 and a structural element 50, and the aforementioned atomizing device 100 comprises a body 10, which has a body 10 for accommodating a liquid to be atomized (not shown in the figure). Shown) cavity 11, and a housing space 12 and a through hole 13 are provided on one side of the body 10, and the water mist generator 20 of the present invention is placed in the housing space 12 of the body 10.

The aforementioned body 10 further includes a water injection port 14 for injecting the aforementioned liquid to be atomized into the aforementioned cavity 11; and if continuous atomization is desired, such as room humidity control, the water injection port 14 can be connected to a continuous supply of liquid. Source, so that the atomizing device 100 operates for a long time. In addition, the space of the aforementioned cavity 11 can be adjusted in size according to requirements, as a storage for the aforementioned liquid to be atomized. Moreover, the aforementioned atomizing device 100 can be made independent for medical purposes, and can be carried by patients.

The aforementioned oscillating element 30 has a first through hole 31 corresponding to the aforementioned through hole 13 , and in this embodiment, the aforementioned oscillating element 30 is a piezoelectric sheet for providing an oscillating kinetic energy.

The orifice plate 40 is provided with a plurality of orifices 41 corresponding to the first through holes 31 , and the orifice plate 40 is connected to the oscillating element 30 .

The aforementioned structural element 50 is provided with a second perforation 51 corresponding to the plurality of nozzle holes 41 of the aforementioned nozzle hole sheet 40, and is connected with the aforementioned nozzle hole sheet 40, so that the aforementioned nozzle hole sheet 40 is fixed between the aforementioned oscillation element 30 and the structural element 50. , and place the combined oscillating element 30, orifice sheet 40 and structural element 50 in the accommodating space 12 of the body 10, and generate oscillating kinetic energy through the aforementioned oscillating element 30, so that the liquid passes through the orifice sheet 40 The nozzle hole 41 produces atomization. In addition, the aforementioned structural element 50 is made of a plastic material.

Please continue to refer to FIG. 1 and refer to FIG. 2 together. FIG. 2 is a side sectional view of the atomizing device of the present invention. The aforementioned water mist generator 20 is fixed in the accommodating space 12 of the aforementioned body 10, and the aforementioned orifice sheet 40 is fixed between the aforementioned oscillating element 30 and the structural element 40 with glue, and the first through hole 31 of the aforementioned oscillating element 30 The hole diameter is larger than the second perforation 51 of the aforementioned structural element 50. When the water mist generator 20 of the present invention operates, the vibration area of the spray hole sheet 40 can be reduced, so that the atomization area can be concentrated in the central part with the largest amplitude, effectively eliminating spraying. Vibration in the unnecessary area of the orifice sheet 40 reduces the load on the orifice sheet 40 and improves the service life. The vibration energy is limited to the center of the orifice sheet 40 to reduce unnecessary energy consumption and achieve the purpose of strengthening.

When the aforementioned atomizing device 100 is to be operated, first, the liquid to be atomized is injected into the cavity 11 of the aforementioned body 10 through the water injection port 14, so that the aforementioned liquid to be atomized flows through the through hole 13 of the aforementioned body 10 to the aforementioned The water mist generator 20 flows to the aforementioned orifice sheet 40 through the first perforation 31 of the aforementioned oscillating element 30, and the oscillation kinetic energy generated by the aforementioned oscillating element 30 drives the aforementioned orifice sheet 40 to vibrate. The vibration produces a squeeze effect on the liquid, so that the liquid is discharged from the aforementioned spray hole 41 to form a mist.

Please refer to FIG. 3A to FIG. 3C , which are schematic diagrams of different embodiments of the structural elements of the water mist generator of the present invention. In this embodiment, the second through hole 51 of the aforementioned structural element 50 is in a tapered shape corresponding to the aforementioned orifice plate 40 , so that the atomization effect can be diffused.

In this embodiment, the tapered shape of the second through hole 51 of the aforementioned structural element 50 may be one of a bowl shape, a rounded shape or a chamfered shape, as shown in FIG. 3A , FIG. 3B and FIG. 3C .

Please refer to FIG. 4A and FIG. 4B , which are schematic waveform diagrams of the air shock recovery of the water mist generator according to the embodiment of the present invention and the existing water mist generator. Generally, when using an atomizing device, there is often no supplementary liquid, which causes the atomizing device to produce empty vibrations. Generally, the existing technology tends to have low-frequency vibration modes during air vibrations, resulting in ear-piercing noises. However, this The invented water mist generator fixes the orifice sheet by adding structural elements, so that the frequency of vibration can be maintained stably, reducing the occurrence of low-frequency vibration, and thus eliminating noise, which is very useful for water mist generators used in medical applications The effect can ease the patient's mood of being treated and improve the treatment effect.

In addition, in terms of adding liquid to provide atomization after air shock, the water mist generator of the present invention has a better recovery curve, as shown in Figure 4A. It can be seen from the figure that the water mist generator of the present invention adds liquid after air shock for a while , its oscillation frequency does not drift, so its atomization rate returns to the initial state almost instantaneously. Compared with the recovery curve of the prior art, it can be seen from Fig. After adding liquid for a while, the frequency of the existing technology will slowly recover, and the situation reflected by the frequency drift is that the atomization rate decreases, and the atomization rate is slowly increased, but it cannot return to the initial atomization state. Therefore, the water mist generator of the present invention is of great help to the quality of the product, and does not need to adjust the frequency every time it is used, which improves the convenience of product use.

Please refer to FIG. 5 , which is a side sectional view of a water mist generator applied to an atomization device according to another embodiment of the present invention. The same or similar components in this embodiment and the embodiment shown in FIG. 1 are indicated by the same or similar component symbols, and detailed descriptions are omitted to make the description of the present invention clearer and easier to understand.

The water mist generator 20 of the present embodiment is roughly the same as the structure described in the embodiment of Fig. 1, and its difference is that the oscillating element 30 of the water mist generator 20 of the present embodiment is provided with an elastic body 60, and the elastic body 60 is placed Between the aforementioned oscillating element 30 and the aforementioned orifice sheet 40, and when the water mist generator 20 operates, oscillating kinetic energy is generated, so that there is an oscillating force between the aforementioned oscillating element 30 and the orifice sheet 40, and the elastic body uses To buffer the oscillating force existing between the oscillating element and the orifice sheet, and in this embodiment, the elastic body is made of plastic.

Although the present invention has disclosed the above embodiments, it is not intended to limit the present invention. Any skilled person can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should depend on the scope defined by the claims.

Claims (9)

1. A water mist generator, in order to atomize a liquid, and be applied to an atomizing device with through holes, it is characterized in that, this water mist generator comprises: An oscillating element is provided with a first through hole corresponding to the aforementioned through hole; an orifice sheet, which is provided with a plurality of orifices corresponding to the first perforation, and is connected with the oscillating element; and A structural element is provided with a second perforation corresponding to a plurality of nozzle holes of the aforementioned nozzle hole sheet, and is connected with the aforementioned nozzle hole sheet, so that the aforementioned nozzle hole sheet is fixed between the aforementioned oscillation element and the structural element, and the combined vibration The element, the orifice sheet and the structural element are placed in the accommodating space of the aforementioned atomization device, so that the liquid passes through the orifice of the orifice sheet to generate atomization. 2. The water mist generator as claimed in claim 1, characterized in that said oscillating element is provided with an elastic body. 3. The water mist generator as claimed in claim 2, wherein the elastic body is made of plastic. 4. The water mist generator as claimed in claim 1 or 2, wherein the aforementioned atomizing device further comprises a cavity for accommodating a liquid to be atomized and a cavity for injecting the aforementioned liquid to be atomized The water injection port in the aforementioned cavity. 5. The water mist generator according to claim 1 or 2, characterized in that the aforementioned oscillating element is a piezoelectric sheet. 6. The water mist generator according to claim 1 or 2, characterized in that, the aforementioned structural elements are made of plastic materials. 7. The water mist generator according to claim 1 or 2, characterized in that, the aforementioned orifice plate is fixed between the aforementioned oscillating element and the structural element by glue. 8. The water mist generator according to claim 1 or 2, wherein the diameter of the second through hole is smaller than the diameter of the first through hole. 9. The water mist generator according to claim 8, characterized in that, the second through hole of the aforementioned structural element is in the shape of a bowl, a rounded corner or a chamfered corner.

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