JPS6077771A - Ultrasonic atomizer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Field of the Invention This invention relates to an ultrasonic atomization device, a patented ultrasonic 10
'Regarding an ultrasonic atomizer equipped with a JJ child.

(B) Prior art and its problems - i + Tsumine In the case of Erozole therapy, the location in which the atomized liquid is likely to deposit in the respiratory tract depends on the size of the particles; In the upper respiratory tract, small 4
The particles are said to be deposited in the lower respiratory tract (bronchus) and alveoli. Therefore, even when carrying out the same aerosol treatment, it is desirable to inhale atomized particles with different particle sizes depending on whether the affected area is the forest, throat, lungs, etc. Furthermore, if the affected area extends to various parts of the respiratory tract, it is necessary to inhale atomized particles of various particle sizes.

However, the conventional ultrasonic atomization device (inhaler) L:L
, t(L-) ultrasonic transducers are used, and the atomized particles are also determined by a type of vibration frequency, making it impossible to provide detailed and effective treatment depending on the patient and site.

(c) Purpose of the Invention The purpose of the present invention is to solve the drawbacks of conventional ultrasonic atomizers, to produce ultrasonic atomizers that can produce atomized atomized f1' having various particles 1 yen by HH, and that consume less power. The objective is to provide a device for converting

(d) Structure and Effect of the Invention The ultrasonic atomization device of the present invention includes a plurality of ultrasonic vibrators each having a different resonance frequency provided at the bottom a of the outer tank, and a plurality of ultrasonic vibrators having different resonance frequencies. In the interval, l':'
l'l'iil 1117 Next, it is equipped with an automatic scanning circuit that vibrates, and the vibrating ultrasonic transducer is sequentially activated by the automatic scanning circuit! By switching between Ir and Ir, atomized particles having different particle sizes can be obtained in the same order.

According to the ultrasonic atomization device of the present invention, a plurality of ultrasonic vibrators having different resonance frequencies are provided and automatically switched.
Since it vibrates at different frequencies, atomized particles of various particle sizes are output, and the atomized liquid can be deposited at each location without much effort. Second, since not all the oscillators vibrate at the same time, the power consumed is also reduced to a non-electrical level.

(e) Description of Examples The present invention will be explained in more detail below with reference to Examples.

FIG. 1 is a sectional view of an ultrasonic inhaler showing one embodiment of the present invention. In the figure, reference numeral 1 denotes an outer tank, into which water is placed as a liquid medium for transmitting kinetic energy.

2 is an inner tank, into which water, chemical solution, etc. to be atomized are put.

The −F side of the inner tank 2 is provided with an air outlet 2a that receives air from a blower fan (not shown) and an output port 2b that outputs atomized particles. The bottom portion 2c of the inner tank 2, which is made up of a diaphragm, has a downwardly convex curved surface, so that the atomizing action is performed approximately at the center of the tank.

The bottom part 1a of the outer tank 1 is formed into a mortar shape, and the bottom part 1a of the outer tank 1 is shaped like a mortar.
Three holes 1b are provided in the center of the surface, and an ultrasonic transducer unit 3 is disposed in each hole 1b. These ultrasonic transducers Unino 1-3 are composed of an ultrasonic transducer 4, a rubber ring 5, a transducer presser 6, and an electrode fitting 7. Each ultrasonic transducer 4 is located at the bottom 1a of the outer tank l.
They are arranged on concentric circles equidistant from the center of the inner tank 2, and their vibration surfaces are parallel to a plane in contact with the curved surface of the bottom 2c of the inner tank 2.

8 is an oscillation section and 9 is a power supply section, which are housed in the base case 10. The electrode fitting 7 of the ultrasonic vibrator 4 is connected to the oscillating part 8 by a lead wire. The three ultrasonic transducers 4 (referred to as 4a, 4b, and 4C) have resonance frequencies of 0.76 Mllz, 1, and 4 Mllz, respectively.
.

FIG. 2 is a block diagram showing the electric circuit of the ultrasonic inhaler described in 1 above, particularly the configuration of the oscillating section. In the figure, the oscillating section 8
Drive circuits 112, llb, and 11c that drive the ultrasonic transducers 4a, 4b, and 4C of 311U, respectively, and scanning signals T1, T2, and T for operation switching in time sequential order are applied to these drive circuits 11a, llb, and IIC. It consists of a scanning signal generating circuit 12 which outputs 3;! ].

Scanning signal T1. As shown in FIG. 3, T2 and T3 are time-divided, and the only signal during minute 7:1IIIJI is a signal that is repeated. When the scanning signal 11 is high, the drive circuit 1ea is activated (;J,
When the scanning signal T2 is high, the driving l11811 path 11b is not activated, and when the L scanning signal T3 is high, the driving circuit 11
C is energized.

Next, the operation will be explained.

When the power is turned on with the medium liquid in the outer tank 1 and the liquid to be atomized in the inner tank 2, a power supply voltage is received from the power supply part 9,
The scanning signal generation circuit 12 outputs the scanning signal T1 at high level. This energizes the drive circuit 11a, and 0.76 M
Only the ultrasonic transducer 4a of tlz vibrates. This one-stroke motion is transmitted to the atomizing liquid in the inner tank 2 through the medium liquid and is ignited. In this case, the atomized particles have a large diameter. As time passes and the scanning signal '■゛2 becomes high, this scanning signal T
2, the drive circuit 11b is energized, and 1.4 M ll
Ultrasonic vibration of z-T4b vibrates. At this timing, the scanning signal T becomes low, and the vibration of the ultrasonic transducer 4aO stops, so that the ultrasonic transducer 4b vibrates. In this case, medium-sized atomized particles are obtained.

Further, when moving to the next timing, the scanning signal T3 becomes )\a, the driving circuit 11C is energized by this scanning signal T3, and the ultrasonic transducer 4C of 2.8 M Ilz is vibrated.
. At this timing, atomized particles with a small diameter can be obtained. Next, the scanning signal TI becomes high again, and the scanning signal TI becomes high as time passes.
Operate it back as l-T 2-T 3-T I-・, and the ultrasonic transducer that vibrates accordingly 4 w-=4 b 4
Therefore, the particle size of the atomized particles changes as follows: c-i4 a-''--, and the particle size of the atomized particles is output repeatedly as follows.

According to this embodiment of the ultrasonic inhaler, each ultrasonic vibrator is divided into complete Q time segments and vibrates, so there is no interference from each other, and particles with good characteristics such as small, medium, and small can be collected. You can get it.

Further, in the ultrasonic inhaler of the above embodiment, the scanning signal Tl
, T2, and T3 are the same, or the periods of these scanning signals are appropriately different in advance (i?j, even if selected, 1, 2).

In addition, in the ultrasonic inhaler of the above embodiment, the number of ultrasonic vibrator 4 reno time 1 Raku is set to 3, but Moraron 3 (
In addition, the drive circuit is not limited to two units, but may be two units or four or more units.Also, depending on the case, the drive circuit may be used for both, and the ultrasonic transducer glue can be automatically adjusted. It may also be possible to switch to .

[Brief explanation of drawings]

Fig. 1 is a sectional view of an ultrasonic inhaler showing one embodiment of the present invention, Fig. 2 is a block diagram showing the electric circuit of the ultrasonic inhaler, and Fig. 3 explains the operation of the ultrasonic inhaler. FIG. 1. Outer tank, 1a/bottom of outer tank, 2. Inner tank, 4a/4b 4C: Ultrasonic vibrator, 11al
lbllc: Drive circuit, 12 dual carriage signal generation circuit Special applicant: Tateishi Electric Co., Ltd. Agent Patent attorney: Shigeru Nakamura

Claims (1)

[Claims] (1) An outer tank for storing the medium lrk, a tank for storing the liquid to be stored in the outer tank, and an inner tank for storing the liquid to be heated, and multiple +
1l11 ultrasonic transducers, a circuit for driving these ultrasonic transducers, and each of the ultrasonic transducers at predetermined time intervals,
An ultrasonic atomization device consisting of an automatic scanning circuit that vibrates time-sequentially.