JPS598768Y2 - Ultrasonic atomizer - Google Patents

Description

[Detailed description of the invention] This invention is an ultrasonic atomization device that uses the principle that the liquid is raised high in the center of the liquid in the atomization tank by ultrasonic irradiation, and the water droplets are scattered at the tip to generate fog. It is related to.

Generally, this type of ultrasonic atomization device is put into practical use as an ultrasonic nebulizer.

A conventional ultrasonic nebulizer has a structure shown in FIG. 1, for example.

In the structure of the nebulizer shown in FIG. 1, an ultrasonic vibrator 2 is provided in the nebulizer main body 1, and this ultrasonic vibration is applied to the liquid drug 5 injected into the atomization tank 4 by water 3 contained in a container. Communicate indirectly.

The liquid medicine 5, which has been converted into fine particles by ultrasonic vibration, is atomized in the atomization tank 4, and since the atomized particles are heavier than air, they are placed in a lid 6 installed at the top of the atomization tank 4. The installed injection cylinder 7 does not inject.

For this purpose, a blower 8 is provided in the nebulizer main body 1 in order to eject the atomized particles from the injection cylinder 7, and as the fan rotates, the outside air sucked in through the ventilation hole 9 provided on the side wall of the main body 1 is transferred to the wind cylinder 10. , the atomization tank 4 is passed through the hollow pipe handle 11 and further through the connecting pipe 12 connected to the pipe handle 11 and equipped with an outside air purification filter 13 inside.
(The arrow in the diagram indicates the direction of air flow.)

The drug particles atomized by the wind pressure of the outside air sent into the atomization tank 4 are injected from the injection barrel 7.

Further, the electric circuit components of the ultrasonic generator are housed within the nebulizer main body 1.

Such an ultrasonic nebulizer is used to treat bronchitis or alveoli by allowing the patient to absorb the drug particles ejected from the injection barrel 7 through the oral cavity and attaching the drug to the alveoli.

However, during the treatment, the patient often blows into the injection tube 7.

In this case, the atomized drug particles in the atomization tank 4 are transferred from the connecting pipe 12 to the hollow pipe handle 1 by the blowing.
1. It flows back toward the wind barrel 10 side and flows into the nebulizer main body 1.

The drug particles that have flowed into the main body 1 are splashed onto the electric circuit, which often causes the nebulizer device to malfunction.

Therefore, the present invention prevents the back-flowing drug particles from splashing onto the electrical circuit components, thereby minimizing the occurrence of malfunctions in the nebulizer device described above. It has been improved.

The ultrasonic atomization device according to the present invention shown in FIG. 2 will be explained below.

Reference numeral 21 denotes a main body cabinet, and this internal storage chamber 22 is equipped with an electric circuit component 23 and an electric blower 24.

25 is an inverted L-shaped blower pipe fixed to the main body cabinet 21, and the lower end opening of the blower pipe 25 inserted into the main body cabinet 21 is connected to the electric blower 24.
The opening at the upper end is closed and the horizontal part is used as a handle 26.

The electric blower 24 sucks air through a filter 27' from a tiled air hole 27 provided on the lower wall of the main cabinet 1, and then enters the air into the air pipe 25 from the opening at the lower end of the air pipe 25 through the air cylinder 28. It works like blowing wind.

Reference numeral 29 denotes an ultrasonic action tank attached to the upper surface of the main body cabinet 21, and a holder part 30 of an ultrasonic atomization tank 32, which will be described later, is provided on the upper surface.

Further, an ultrasonic vibrator 3 is provided on the bottom of the ultrasonic action tank 29.
1 is fixed.

The ultrasonic atomization tank 32 is comprised of a transparent cylindrical container with a downwardly protruding hemispherical diaphragm 33 attached to its bottom surface using a diaphragm holder 34, and is removably attached to a holder part 30 of the ultrasonic action tank 29. It is about to be placed.

A lid 35 is placed on the upper open end of the ultrasonic atomization tank 32,
This lid 35 is provided with an air introduction port 36 and an atomization discharge port 37 at a position opposite to this.
7 is connected to an intake hose 38.

Further, a downwardly inclined guide plate 39 is provided on the inner surface of the lid 35 so as to be located in the path of the mist discharged from the atomized liquid discharge port 37 to prevent the discharge of large mist particles.

In addition, the second air inlet 36 has an outlet 42 at the lower end of a connecting pipe 41 for sending air released from an air outlet 40 opened at a predetermined position of the blower pipe 25 into the atomization tank 32. It has been inserted.

The connecting pipe 41 is a substantially L-shaped cylinder, and the vertical cylinder part 41A is located around the outer circumference of the above-mentioned blow pipe 25, covering the pipe part which is installed upright from the main body cabinet 21. Its lower end reaches the upper surface of the main body cabinet 21, and the horizontal cylindrical portion 41B forms an air guiding path for guiding air from the air outlet 40 of the blower pipe 25 to the atomization tank 32.

The blower pipe 25 is inserted through the connecting pipe 41, and the upper portion thereof serves as the above-mentioned handle 26.

As shown more clearly in FIG. 3, the connecting pipe 41 has a lower end surface of the vertical cylindrical portion 41A, which has a hole 43 through which the blower pipe 25 is inserted, and a plurality of notches around the periphery of the hole 43. An air escape part 44. 44... is provided.

Referring again to FIG. 2, the connecting pipe 41 has a spring 46 compressed within the vertical cylindrical portion 41A between its lower end and a flange 45 attached to the outer circumferential wall of the blower pipe 25.
The connecting pipe 41 is pressed and held on the main body cabinet 21 by the connecting pipe 41, and the connecting pipe 41 is provided around the blower pipe 25 so as to be rotatable and movable upward against a spring 46.

Therefore, when the connecting pipe 41 is set in the air inlet 36 of the lid 35 as shown in FIG. 2, a downward force is always exerted on the lid.

Furthermore, by rotating the connecting pipe 41 and separating it from the lid 35, the lid 35 can be freely removed from the atomization tank 32.

To operate the ultrasonic atomization device described above, first the ultrasonic action tank 29 is filled with water, and then the ultrasonic atomization tank 32 is attached to the holder part 30 of the ultrasonic action tank 29.

Next, the chemical solution is put into the atomization tank 32, the lid 35 is placed on it, and the connecting tube 41 is set at a predetermined position, and then the power switch is turned on.

Then, the oscillator operates and the ultrasonic transducer 31 converts the electrical energy into ultrasonic energy.

This converted ultrasonic energy is applied to the liquid in the atomization tank 32 through the water in the action tank 29, and the liquid in the atomization tank 32 is atomized.

This atomized mist is heavier than air, so the intake hose 38
Although it is not released naturally, it is sent from the electric blower 24 through the air pipe 25 → air discharge port 40 → connecting pipe 41 → lower protrusion port 4.
The mist is discharged to the outside from the intake hose 38 by the wind sent through the air guide passage of the air inlet 36.

Therefore, the patient absorbs the drug particles injected from the suction hose 38 through the oral cavity, and the drug adheres to the bronchitis or alveoli to treat the disease.

Incidentally, during this treatment, the patient often blows into the suction hose 38.

In this case, the atomized drug particles in the atomization tank 32 due to the blowing flow back from the air inlet 36 to the lower outlet 42 to the connecting pipe 41 as shown by the dotted arrow.

The mist that has flowed back into this connecting pipe 41 is
The lower end of A is the air escape part 44. 44...... and communicates with the outside, the vertical cylindrical portion 41A is connected to the air blown out from the air outlet 40 of the blower pipe 25.
from the air escape portion 44. This reversed mist is discharged to the outside through 44.

That is, the mist flowing back into the connecting pipe 41 is prevented from being sent into the housing chamber 22 of the main body gear vignette 21 through the blower pipe 25, and the air escape portion 44. 44...
This prevents mist from being applied to the electric circuit components in the storage chamber 22, thereby avoiding equipment failure due to this.

In the above embodiment, an air escape section 44 is provided at the lower end of the vertical cylindrical section 41A of the connecting pipe 41. 44... is constructed to prevent backflow into the storage chamber, but the key point is to provide a means for preventing backflow from entering the storage chamber by introducing air guide between the blower and the atomization tank. It may be provided in the conduit, and it goes without saying that the structure is not limited to the above structure, and that various other structures can be used.

In this way, even if the particles in the atomization tank flow back into the air guide pipe, the present invention can prevent them from flowing into the storage chamber that houses electrical components, etc., so that the backflowing mist will not fall on electrical components. Failure of the device due to this can be avoided, and the inconveniences of conventional devices can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the structure of a conventional ultrasonic atomization device, Fig. 2 is a block diagram showing the structure of the ultrasonic atomization device of the present invention, and Fig. 3 is related to the device of the present invention. It is a perspective view of a connecting pipe. 21: Main body cabinet, 22: Storage chamber, 23: Electric circuit parts, 24: Electric blower, 25: Air blower pipe, 29:
Ultrasonic action tank, 32: Ultrasonic atomization tank, 35: Lid, 36:
Air introduction port, 37: Atomization discharge port, 40: Air discharge port of the ventilation pipe, 41: Connecting pipe, 44: Air escape portion of the connecting pipe.

Claims (1)

[Scope of utility model registration request] In an ultrasonic atomization device that uses ultrasonic vibration to atomize and eject a liquid contained in an atomization tank, an oscillation circuit device that operates an ultrasonic vibrator, and the blower section of the storage chamber in which the blower section is housed. and the atomization tank, including a hole for guiding air sent by a blower section to the atomization tank, and a plurality of notches formed around the periphery of the hole that communicate with the outside of the storage chamber. The ultrasonic fog is characterized in that an air guide pipe is provided so that when the atomized liquid particles flow back from the atomization tank, the atomized liquid particles are discharged from the notch to the outside of the storage chamber. conversion device.