JPH0510147B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an ultrasonic atomizer with a horn used for humidifying the upper respiratory tract, inhaling medicinal solutions, and the like.

(b) Prior art An ultrasonic atomizer is equipped with a horn having a large diameter end and a small diameter end, an ultrasonic vibrator is provided at the large diameter end of the horn, and an atomization part is formed at the small diameter end. Some devices introduce liquid from a bottle into this atomizing section and drive the liquid with an ultrasonic vibrator to atomize it. In this type of ultrasonic atomizer, to guide the liquid from the bottle to the horn,
Conventionally, one end of a water supply belt with a mesh structure exhibiting capillary action was immersed in the liquid in the bottle, while the other end was placed in contact with the atomizing surface of the horn.

However, this absorbent band is left with water or other liquids in it, and over time it can emit a bad odor, it is not clean, it is wasteful because it is disposable, and it is not suitable for highly viscous chemical solutions. There were drawbacks such as the problem that water was not absorbed smoothly and the supply efficiency was poor. Therefore, in order to solve these problems, the inventors of this application have separately proposed an ultrasonic atomizer that uses a water supply nozzle to supply liquid to the horn atomizing section by introducing the liquid from the bottle. and filed a separate application.

(c) Problems to be solved by the invention In an ultrasonic atomizer using a water supply nozzle, a bottle is provided with a nozzle insertion opening, the water supply nozzle is inserted into this nozzle insertion opening, and the liquid is drawn from the bottle. Liquid is supplied to the horn atomizing section using its own weight or capillary action, but the water supply nozzle is often inserted and removed from the bottle for cleaning or replenishment of chemical solutions, and if there is poor contact with the nozzle insertion port, the water may be removed from the bottle. There was a problem that liquid leaked through the contact part, and when the water supply nozzle was frequently inserted and removed, the contact part became loose. Therefore, when directly inserting the water supply nozzle into the nozzle insertion opening of the bottle, the surface treatment of the water supply nozzle and the nozzle insertion opening of the bottle requires extremely precise processing, making the parts of the liquid supply part expensive. There was a problem.

This invention solves the above-mentioned drawbacks, and prevents liquid leakage even if the contact surface between the nozzle insertion opening of the bottle and the water supply nozzle is relatively rough, and also makes it easy to insert and remove the water supply nozzle from the bottle. The object of the present invention is to provide an ultrasonic atomizer that can be realized relatively inexpensively.

(d) Means and operation for solving the problems The ultrasonic atomizer of the present invention has an ultra-thin liquid supply groove that supplies liquid from the bottle to the horn atomizing section, and an outside air that introduces outside air into the bottle. A water supply nozzle having an inlet, and a tube mounted around the water supply nozzle to cover each of the grooves, and a nozzle insertion port for inserting the water supply nozzle into the bottle, and the tube The water supply nozzle equipped with the water supply nozzle is tightly inserted into the nozzle insertion opening of the bottle through the tube. In this ultrasonic atomizer, the inner wall of the nozzle insertion opening of the bottle and the water supply nozzle are inserted through the tube, so even if the inner wall of the nozzle insertion opening and the water supply bottle have a rough surface finish, they fit tightly. Can be inserted. Furthermore, since the tube leaves a certain space between the liquid supply groove of the water supply nozzle, the outside air inlet, etc., it is possible to supply the liquid with high accuracy without leakage.

(e) Examples The present invention will be explained in more detail below using examples.

FIG. 2 is a sectional view of an ultrasonic inhaler in which the present invention is implemented. This ultrasonic inhaler 1 is composed of a main body part 2, a liquid supply part 3, and an inhalation part 4.

The main body part 2 has an outer shape formed by a main body case 5 and a bottom cover 6, and inside thereof includes a power supply board 7, a power jack 8, a battery 9, an oscillation circuit board 11 on which an electronic circuit part 10 such as an oscillation circuit is mounted, and a power supply. A micro switch 12 as a switch, a drive board 14 for an ultrasonic transducer 13, and the like are housed. Note that 15 is a switch cover.

The liquid supply section 3 includes a bottle 16 for storing water or a chemical solution to be atomized, and a water supply nozzle 17 for guiding the liquid in the bottle 16 to an atomization section of a horn, which will be described later. A more specific structure of this liquid supply section 3 will be described later.

The suction section 4 is a rigid metal body with a conical body, and has a large diameter end and a small diameter end, an ultrasonic vibrator 13 is attached to the large diameter end, and a diaphragm, that is, an atomization section 18 is formed at the small diameter end. It consists of a horn 19, a suction nozzle 20, and a sanitary cap 21.

The main body case 5, bottom lid 6, switch cover 15, and sanitary cap 21 are made of ABS resin, and the bottle 16, water supply nozzle 17, and suction nozzle 20 are made of styrene resin. When operating this ultrasonic inhaler 1 to perform an inhalation action, remove the sanitary cap 21 from the bottle 16 shown in FIG. Then, operate the switch cover 15 and turn on the micro switch 12.
Turn on. As a result, the ultrasonic vibrator 13 starts vibrating, and the horn 19 transmits the vibration. The vibration energy causes the liquid guided to the atomizing section 18 to be atomized and driven by its own weight in the water supply nozzle 16 and capillary action. The atomized liquid is discharged in the direction of arrow A.

Next, the structure of the liquid supply section 3, which is the main part of the present invention, will be explained with reference to FIG. The bottle 16 has a rectangular shape in side view and an inverted U-shape in front view, and is made of transparent styrene resin as described above. Further, a cylindrical nozzle insertion opening 22 is provided on the bottom plane 16a.

Further, the nozzle insertion opening 22 is configured such that the water supply nozzle 17 covered with a tube 23 made of an elastic material such as rubber is inserted from below. In the inserted state, the tube 23 is in close contact with the inner wall of the nozzle insertion opening 22 of the bottle 16, thereby preventing liquid leakage and also preventing the water supply nozzle 17 from falling off from the bottle 16.

The water supply nozzle 17 is provided with liquid supply grooves 24, 24 for leading the liquid in the bottle 16 to the outside using gravity and capillary action in the axial direction, and on the same line as the liquid supply groove 24, the liquid is A slightly deep outside air introduction groove 25 is provided for introducing into the bottle 16 the same amount of outside air that has been led out of the bottle.
Further, a plurality of grooves 26 having a chamber function are provided in order to temporarily store suction liquid in the circumferential direction perpendicular to the grooves 24 and 25.

The liquid supply groove 24 for water supply is fully connected to the bottle 1.
The tip 2 of the water supply nozzle 17 is immersed in the liquid in the water supply nozzle 17.
7 is taken too long. The water supply nozzle 17 is provided with flanges 28 and 29 for fitting the tube 23, and the lower flange 29 is provided with the water supply nozzle 17.
and are provided for positioning the nozzle insertion port 22. The lower end 30 of the water supply nozzle 17 is connected to the horn 1
It is attached so as to come into contact with the atomizing section 9, that is, the diaphragm 18.

Insert the water supply nozzle 17 into the nozzle insertion opening 2 of the bottle 16.
2, first attach the upper end of the water supply nozzle to 2.
The tube 23 is inserted downward from the 7 side, and the tube is fitted between the flanges 28 and 29. As a result, the bank of the water supply nozzle groove 26 and the tube 23
are in close contact with each other, and the liquid supply groove 24, the outside air inlet 25, and the groove 26 are precisely formed. The water supply nozzle 17 into which the tube 23 is inserted is inserted into the nozzle insertion opening 22 from the tip 27 and inserted. FIG. 3 shows a cross-sectional view of the bottle 16 with the water supply nozzle 17 inserted into the atomizing section 18 of the horn 19, and the liquid supply section in FIG. 3 is shown from the right. A side view is shown in Fig. 4.

The lower end 30 of the water supply nozzle 17 is cut off so as to fit through the water supply groove 24 , while the lower end 30 a is cut out so as to follow the shape of the diaphragm 18 . The other 30b is formed into a triangular protrusion and is in contact with the spray surface of the diaphragm 18.

The inner wall surface of the nozzle insertion port 22 of the bottle 16 and the tube 23, and the tube 23 and the water supply nozzle 17
Since the outer circumferential surfaces of the banks of the grooves 26 and 26 are in close contact with each other, the liquid supply groove 24, the outside air introduction groove 25, and the liquid storage groove 26 are precisely formed, so that an appropriate liquid supply can be achieved. Furthermore, since the water supply nozzle 17 and the nozzle insertion port 22 are in close contact with each other, liquid leakage is prevented. When removing the water supply nozzle 17 from the bottle 16, the tubed water supply nozzle 17 can be taken out from the insertion opening 22 by holding the flange 29 and pulling it downward.
When reinserting, conversely, the water supply nozzle 17 may be inserted into the nozzle insertion port 22 from the direction of the upper end 27 of the water supply nozzle 17 . Since the tube 23 is interposed between the nozzle insertion port 22 and the water supply nozzle 17, close contact can always be ensured.

(F) Effects of the Invention According to the ultrasonic atomizer of the present invention, the nozzle insertion opening of the bottle and the water supply nozzle are inserted through the tube, so that the nozzle insertion opening of the bottle and the water supply nozzle can be inserted into the nozzle insertion opening of the bottle. It can ensure the adhesion between
Not only can liquid leakage from the bottle be prevented, but also each groove of the water supply nozzle can be formed precisely, so that appropriate liquid can be supplied. In addition, by simply interposing one tube, even if there is some roughness between the nozzle insertion port and the water supply nozzle, the tube can cover it. It is possible to obtain an inexpensive ultrasonic atomizer without having to pay much attention to the surface treatment of the water supply nozzle.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a liquid supply section which is a main part of an ultrasonic inhaler showing one embodiment of the present invention, Fig. 2 is a sectional view of the ultrasonic inhaler of the same embodiment, and Fig. 3 is a 1st
Sectional view of the completed assembly of the liquid supply section shown in Figure 4.
The figure is a side view seen from the right side of FIG. 13... Ultrasonic vibrator, 16... Bottle, 17
... Water supply nozzle, 18 ... Atomization section, 19 ... Horn, 22 ... Nozzle insertion port, 23 ... Tube,
24...Liquid supply groove, 25...Outside air introduction groove.

Claims (1)

[Scope of Claims] 1. In an ultrasonic atomizer in which a liquid is introduced from a bottle into a horn atomizing section, and the liquid is driven by an ultrasonic vibrator and atomized, the horn atomizing section is guided from the bottle to the horn atomizing section. A water supply nozzle having an extremely thin liquid supply groove for supplying liquid to the bottle, an outside air introduction groove for introducing outside air into the bottle, and a tube attached around the water supply nozzle to cover each of the grooves. , and the bottle is provided with a nozzle insertion opening for inserting a water supply nozzle, and the water supply nozzle equipped with the tube is tightly inserted into the nozzle insertion opening of the bottle through the tube. Ultrasonic atomizer.