KR101332445B1 - Ultrasonic wave spray with separable nozzle - Google Patents

Abstract

The present invention relates to an ultrasonic spray, and more particularly, to a nozzle-separated ultrasonic spray that maintains a high frequency region and prevents degradation of piezoelectric ceramics and deterioration of characteristic values while the nozzle is easily separated and the nozzle is formed long.
To this end, the present invention is the main body is provided with the injection liquid conveying channel is formed therein, the injection liquid connection terminal at the rear and the nozzle for spraying the injection liquid in the front; A vibrator portion in which piezoelectric elements and electrodes are alternately stacked to surround the main body to convert electrical energy into mechanical energy; And a case part having a front case and a rear case covering the main body and the vibrator, wherein the rear case is coupled to the front case while being in close contact with the back of the piezoelectric element, and the main body is fastened to be detachable from the front case. It provides a nozzle-separated ultrasonic spray, characterized in that.

Description

ULTRASONIC WAVE SPRAY WITH SEPARABLE NOZZLE}

The present invention relates to an ultrasonic spray, and more particularly, to a nozzle-separated ultrasonic spray that maintains a high frequency region and prevents deterioration of piezoelectric ceramics and deterioration of characteristic values while the nozzle is easily separated and the nozzle is formed long.

In general, the spray is sprayed by spraying the sprayed liquid to spray and spray the sprayed liquid. A pressurized nozzle method for spraying the coating liquid by the pressurized air supplied from the stored tank and mainly provided with the sprayed liquid is widely used in various fields. have.

However, these pressurized nozzles require high pressure, resulting in a large amount of raw material loss, and when spraying the spray solution by applying the spray nozzle tip to the object to reduce the working time, the spray solution cannot be finely and uniformly coated on the object. There is a problem.

Accordingly, the pressurized nozzle is expensive and not environmentally friendly, and because it is difficult to control the droplet size, it is difficult to control the droplet size, resulting in a large amount of scattering, poor adhesion efficiency, and clogging of the nozzle. Not appropriate

On the other hand, the ultrasonic spray is provided with a piezoelectric element, a drive electrode and a ground electrode as a transducer to replace the pressurized nozzle method, and when an electrical signal is input through the drive electrode, the ultrasonic energy is converted into mechanical energy and ultrasonic frequency. At the oscillation, the droplets are sprayed.

However, the conventional ultrasonic spray is not easy to separate the nozzle from the case or housing that covers the nozzle body, so the replacement cost is high, and it is inserted into the chamber to apply the coating work or to lengthen the nozzle for local precision application (prevention of droplet dispersion). In the case of forming, the frequency domain is lowered and a large displacement is generated only in a portion thereof, thereby deteriorating the piezoelectric ceramic and deteriorating the characteristic value.

The present invention has been made in order to solve the problems of the prior art as described above, the nozzle is easy to remove, it is possible to conveniently replace the nozzle tips of various shapes according to the working environment, while forming the nozzle long to maintain a high frequency region In addition, the object of the present invention is to provide a nozzle-type ultrasonic spray that prevents deterioration of piezoelectric ceramics and deterioration of characteristic values by adjusting a large displacement portion.

Nozzle separation ultrasonic spray of the present invention for achieving the above object is the main body is provided with a spraying liquid conveying channel is formed therein, a spraying liquid connecting terminal at the rear and a front horn for spraying the spraying liquid in the front; A vibrator portion in which piezoelectric elements and electrodes are alternately stacked to surround the main body to convert electrical energy into mechanical energy; And a case part having a front case and a rear case covering the main body and the vibrator, wherein the rear case is coupled to the front case while being in close contact with the back of the piezoelectric element, and the main body is fastened to be detachable from the front case. It is characterized by.

Here, the main body is a thin rod-shaped, the front end of the front case is formed with a coupling jaw and the body is characterized in that the main body flange is seated on the coupling jaw of the front case.

On the other hand, the nozzle-separated ultrasonic spray according to another embodiment of the present invention is the main body is provided with the injection liquid transport channel is formed therein, the injection liquid connection terminal at the rear and the front horn for spraying the injection liquid in the front; A vibrator portion in which piezoelectric elements and electrodes are alternately stacked to surround the main body to convert electrical energy into mechanical energy; And a case part covering the main body and the vibrator part, wherein the front horn protrudes from the main body and the replacement horn is fastened so as to be seated or detached from the front horn.

Here, the end of the front horn is characterized in that the coupling groove is inserted into the replacement horn.

And, the replacement horn is a fastening portion inserted into the coupling groove of the front horn; It characterized in that it comprises a horn flange protruding to contact the end surface of the front horn and a nozzle tip for spraying the injection liquid.

Preferably, the length from the horn flange of the replacement horn to the tip of the nozzle tip is 2.8 to 3.2 cm in the case of a 40 kHz resonator.

More preferably, the length of the front horn is characterized by consisting of 2.8 ~ 3.2cm in the case of a 40kHz resonator.

Preferably, the rear horn in close contact with the rear surface of the piezoelectric element is characterized in that it is further configured.

The nozzle-separated ultrasonic spray of the present invention configured as described above has the following useful effects.

First, the nozzle (or replacement horn) from the front case is easy to remove and install, it is possible to conveniently replace the nozzle tip of various shapes according to the work target or working environment.

Second, while maintaining the high frequency area while adjusting the nozzle length, and adjusting the large displacement part to two adjacent places to prevent deterioration of piezoelectric ceramics and deterioration of characteristic value, it is not only favorable to the environment such as the coating work in the chamber, but also to the local precise coating. It becomes possible.

1 is a perspective view and an exploded perspective view showing a nozzle detachable ultrasonic spray according to an embodiment of the present invention;
2 is a side view and a cross-sectional view of FIG. 1;
3 is a perspective view and an exploded perspective view showing a nozzle detachable ultrasonic spray according to another embodiment of the present invention;
4 is a side view and a cross-sectional view of FIG. 3;
5 is a view showing a displacement amount of the ultrasonic spray of FIG. 3;
6 is a view showing the frequency impedance characteristics of the ultrasonic spray of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

1 is a perspective view and an exploded perspective view showing a nozzle detachable ultrasonic spray according to an embodiment of the present invention, Figure 2 is a side view and a cross-sectional view of FIG.

As shown in FIGS. 1 and 2, the nozzle-separated ultrasonic spray of the present invention includes a main body 100, a vibrator part 200, and a case part 300, and the main body 100 includes a case part 300. It is fastened so as to be seated or detached.

The main body 100 has a thin rod shape made of titanium, and has an injection liquid conveying channel 110 through which an injection liquid moves along an inner center thereof, and is provided with an injection liquid connecting terminal 120 at a rear end thereof and sprayed at the front thereof. A front horn 130 for spraying liquid is provided.

The vibrator part 200 has a ring-shaped piezoelectric element 210 and an electrode 220 alternately stacked to surround the main body 100 to convert electrical energy into mechanical energy.

Here, the electrode 220 includes the driving electrode 221 and the ground electrode 222, and when the electrical signal is input through the driving electrode 221, the vibrator 220 vibrates at an ultrasonic frequency. .

The case part 300 includes a front case 310 and a vibrator part 200 and the main body 100 which wrap the front part of the main body 100 to cover the main body 100 and the vibrator part 200 in a SUS material. It is composed of a rear case (Back case) 320 surrounding the rear portion.

At this time, the rear case 320 is coupled to the front case 310 while being in close contact with the back of the piezoelectric element 210, the main body 100 is fastened so as to be separable from the front end of the front case 310.

And, in order to seat or separate the main body 100, the front end of the front case 310 is formed with a stepped engaging jaw 311 along the rim, the main body 100 is coupled to the engaging jaw 311 along the outer peripheral surface The body flange 140 to be seated protrudes.

As described above, the present invention in the above embodiment further separates by the front case 310 surrounding the main body 100 and the rear case 320 coupled to the front case 310 while being in close contact with the back of the piezoelectric element 210. No housing is required, which reduces manufacturing costs.

In addition, since the main body 100 can be easily mounted and detached using the main body flange 140 seated on the engaging jaw 311 of the front case 310, nozzle tips having various shapes according to the work target and the working environment. Can be replaced conveniently.

3 is a perspective view and an exploded perspective view showing a nozzle detachable ultrasonic spray according to another embodiment of the present invention, and FIG. 4 is a side view and a cross-sectional view of FIG. 3.

As shown in FIGS. 3 and 4, the nozzle-separated ultrasonic spray according to another embodiment of the present invention includes a main body 100, a vibrator part 200, and a case part 300, and the main body 100. The front horn 130 protrudes and the replacement horn 400 is fastened so as to be seated or detachable to the front horn 130.

Here, the back horn (150) is further configured to be in close contact with the back of the piezoelectric element 210 of the vibrator portion 200, the coupling groove in which the replacement horn 400 is inserted into the end of the front horn 130 131 is concavely cut inward.

The replacement horn 400 includes a fastening part 410, a horn flange 420, and a nozzle tip 430, and the fastening part 410 is coupled to the front horn 130. Protruding rearward to be inserted into the groove 131, the horn flange 420 is projected in the circumferential direction so that the rear end surface is in contact with the end surface of the front horn 130, the nozzle tip 430 is the horn flange 420 E) spray atomization liquid forward.

The length L1 from the horn flange 420 of the replacement horn 400 to the tip of the nozzle tip 430 is preferably 2.8-3.2 cm in the case of a 40 kHz resonator, and the length of the front horn 130 ( L2) is more preferably made of 2.8 ~ 3.2cm to correspond to the length of the replacement horn (400).

5 is a diagram illustrating a displacement amount of the ultrasonic spray of FIG. 3, and FIG. 6 is a diagram illustrating a frequency impedance characteristic of the ultrasonic spray of FIG. 3.

Since the nozzle detachable ultrasonic spray according to another embodiment of the present invention configured as described above can be easily mounted and detached from the coupling portion 410 of the replacement horn 400 in the coupling groove 131 of the front horn 130. The nozzle tips of various shapes can be replaced conveniently according to the work target and the working environment.

Furthermore, the replacement horn 400 is fastened to the front horn 130 protruding from the vibrator portion 200 to lengthen the entire nozzle length so as to enable local precision injection (prevention of injection liquid dispersion), but at a high frequency range (20 kHz or more). By maintaining the frequency domain as it is and adjusting the large displacement part to two places, it is possible to prevent degradation of the piezoceramic and deterioration of the characteristic value.

That is, by forming an additional vibration node (Node) having substantially zero displacement at the interface between the front horn 130 and the replacement horn 400, Later, large displacements occur.

In the drawings, reference numerals denote O-rings that seal between the front case 310 and the rear case 320 or between the front case 310 and the main body 100.

In the present invention, the shape of the main body 100, the piezoelectric element 210, the electrode 220, the front case 310 and the rear case 320, etc. have been described in the form of a ring or a rod, but those skilled in the art have a rectangular parallelepiped or a cube as needed. It will be able to change the design in various forms.

In addition, the ultrasonic spray of the present invention is a fuel cell coating process, thin film and silicon solar cell production process, solar energy coating application device, fuel cell application multifunctional device, medical parts, glass manufacturing, spray drying, food coating, precise coating, coating It will be apparent to those skilled in the art that the present invention can be variously applied to electronic parts, medical parts, and nano parts that require deposition.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: main body 110: injection liquid transfer channel
120: injection liquid connector 130: front horn
131: coupling groove 140: body flange
150: rear horn 200: vibrator portion
210: piezoelectric element 220: electrode
221: drive electrode 222: ground electrode
300: case part 310: front case
311: engaging jaw 320: rear case
400: replacement horn 410: fastening
420: horn flange 430: nozzle tip
O: O-ring

Claims (8)

delete delete A main body having an injection liquid conveying channel formed therein, an injection liquid connecting terminal provided at the rear thereof, and a front horn for spraying the injection liquid at the front thereof;
A vibrator portion in which piezoelectric elements and electrodes are alternately stacked to surround the main body to convert electrical energy into mechanical energy; And
It is configured to include a case portion for covering the main body and the vibrator,
The front nozzle is separated ultrasonic nozzles, characterized in that the replacement horn is fastened so as to be seated or detachable. The method of claim 3, wherein
Separating nozzles, characterized in that the end of the front horn is provided with a coupling groove into which the replacement horn is inserted. 5. The method of claim 4,
The replacement horn is a fastening portion inserted into the coupling groove of the front horn; And a nozzle tip for spraying the spray liquid and a horn flange protruding to contact the end surface of the front horn. The method of claim 5, wherein
The nozzle separation type ultrasonic spray, characterized in that the length from the horn flange of the replacement horn to the tip of the nozzle tip is 2.8 ~ 3.2 cm in the case of a 40 kHz resonator. The method according to claim 6,
The nozzle-separated ultrasonic spray, characterized in that the length of the front horn is made of 2.8 ~ 3.2cm in the case of a 40kHz resonator. The method of claim 3, wherein
Separating nozzles, characterized in that the rear horn in close contact with the rear surface of the piezoelectric element is further configured.

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