JP2685846B2 - Ultrasonic atomizer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of supplying atomized liquid to a metal horn in an ultrasonic atomizing device using ultrasonic vibration.

[Prior Art] As a conventional ultrasonic atomizer of this type, Japanese Patent Publication No. 58-32
No. 618 and JP-A-58-61861 are proposed. In these conventional water supply systems, felt or the like is used for the water absorber, and water is sucked up from the lower part of the metal horn to supply water.

[Problems to be Solved by the Invention] However, since the water absorbing body is formed of felt or the like as in the conventional case, when tap water is used, discoloration or stain occurs in a short period of time. Also, since it is difficult to dry, there is a possibility that various bacteria will propagate during long-term use,
It is unsanitary. Also, regarding the contact with the ultrasonic transducer, the end surface treatment of the fiber water absorber such as felt is incomplete,
There is a problem that there is a high risk that accurate fine spray cannot be performed due to fluffing and the like.

The present invention is invented in view of the above-mentioned conventional problems, the object of which is stable fine spray by using a hydrophilic plastic porous body as a water absorber, usability, in terms of hygiene An object is to provide an ultrasonic atomizing device that can be expected to improve.

[Means for Solving the Problems] In order to achieve the above object, the ultrasonic atomizing device of the present invention is provided with a rigid water absorbing body 53 made of a hydrophilic plastic porous body led out from the chemical liquid tank 2 and an ultrasonic transducer. 1 and the ultrasonic transducer 1 and the water absorbing body 53 are elastically abutted by the elastic body 51.

Further, the first chemical liquid tank 20 for fixing the chemical liquid tank 2 to the apparatus housing 3 and the second chemical liquid tank 56 which is detachable from the first chemical liquid tank 20 and is used for supplying water to the first chemical liquid tank 20. You can also do it.

Further, the water absorbing body 53 made of a hydrophilic plastic porous body
The cross-sectional area may be formed so as to change along the water supply direction.

[Operation] In the present invention, the liquid (hereinafter simply referred to as water) absorbed by the rigid water absorbing body 53 made of the hydrophilic plastic porous body is atomized into fine particles by the vibration of the ultrasonic transducer 1, and this spray is generated. By inhaling into the nasal cavity and oral cavity, it moistens the mucous membrane, soothes the dry condition of the mucous membrane, and alleviates inflammation. By using a rigid water absorbent body 53 made of a hydrophilic plastic porous body, the water absorbent body 53 with a stable contact end surface is obtained.
It has become possible to improve the hygiene of the product.

EXAMPLES The present invention will be described below in detail based on examples shown in the accompanying drawings.

As shown in FIG. 2, a printed wiring board 16 on which an oscillation circuit section 9 and a power switch 10 are mounted is built in a device housing 3 formed of a synthetic resin molding, and a power supply section 11 is provided below the printed wiring board 16. There is. The power supply unit 11 has a dual power supply system, and can house the dry battery 12 as a power supply.
An external AC power source can be used as a power source by connecting to the jack. The ultrasonic oscillator 1 is composed of an electrostrictive element 14 that generates vibration and a metal horn 15 that magnifies the vibration. The electrostrictive element 14 is adhesively fixed to the metal horn 15, and the electrostrictive element is disposed from the printed wiring board 16. Power is supplied to 14 by a power supply line 50.

There is an annular groove 17 on the outer periphery of the metal horn 15, and the elastic body 51
It is press-fitted and fixed to the horn holding frame 52 via the O-ring which constitutes the. Further, a tapered chamfered portion 31 is formed on the outer periphery of the tip of the metal horn 15 of the ultrasonic transducer 1.
The chemical liquid tank 2 is attachable to and detachable from the first chemical liquid tank 20 fixed to the apparatus housing 3 and the first chemical liquid tank 20.
The second chemical liquid tank 56 for supplying water to the chemical liquid tank 20 of FIG. Here, the first chemical liquid tank 20 is a fixed tank fixed to the apparatus housing 3 so as not to be easily removed. A water absorbent body 53 made of a hydrophilic plastic porous body is press-fitted and fixed to the first chemical liquid tank 20 which is the fixed tank, and the water absorbent body 53 is configured to supply water to the ultrasonic transducer 1. ing. Here, as the hydrophilic plastic porous body constituting the water absorbing body 53, for example, Sunfine AQ manufactured by Asahi Chemical Industry Co., Ltd. can be used. Further, a pressure adjusting section 54 is provided at the bottom of the first chemical liquid tank 20 so as to adjust the pressure in the tank during spraying. In addition, a recess 55 is provided in the upper portion of the first chemical liquid tank 20, and a fitting projection 56a of the second chemical liquid tank 56 for supplying water to the first chemical liquid tank 20 is attached to and detached from the recess 55. It is fitted freely. Here, an O-ring 57 is provided on the outer periphery of the fitting protrusion 56a of the second chemical liquid tank 56, and when the fitting protrusion 56a is fitted into the recess 55, the O-ring 57 is hermetically connected. In this case, the first chemical liquid tank
A convex portion 55a provided at the bottom of the concave portion 55 of 20 activates a valve 58 provided in the second chemical liquid tank 56 to supply water from a hole (not shown) provided in the concave portion 55. As a result, when it is necessary to supply water to the first chemical liquid tank 20, the second chemical liquid tank 56 is removed and water is supplied.
As described above, since only the second chemical liquid tank 56 can be removed to supply water, the contact position relationship between the water absorbing body 53 fixed to the first chemical liquid tank 20 fixed to the apparatus housing 3 and the ultrasonic transducer 1 is always It will be constant and a stable spray will be guaranteed.

FIG. 3 shows an enlarged cross-sectional view of the ultrasonic transducer 1 attached to the housing. As shown in FIG. 3, the ultrasonic transducer 1 is press-fitted and fixed to the horn holding frame 52 via an elastic O-ring forming the elastic body 51. Here, the ultrasonic transducer 1 is supported only by the O-ring that constitutes the elastic body 51, and the vibration loss of the ultrasonic transducer 1 is suppressed to the minimum. Further, the elasticity of the O-ring forming the elastic body 51 allows the position of the ultrasonic transducer 1 to be easily adjusted to some extent. The horn holding frame 52 holding the ultrasonic transducer 1 as described above has the male screw portion 59 provided on the outer circumference and the female screw portion 59a provided on the housing 3.
It is attached by screwing on. Here, a pressurizing spring 60 is interposed between the horn holding frame 52 and the device housing 1 to prevent rattling of the horn holding frame 52 to be screwed into the device housing 3. Therefore, at the time of assembly, the ultrasonic transducer 1 and the water absorbing body are rotated by the rotation of the horn holding frame 52.
It is possible to adjust the position with 53. Where the water absorber 53
As for the contact relationship between the ultrasonic transducer 1 and the ultrasonic transducer 1, the O-ring which is the elastic body 51 elastically abuts the long ultrasonic transducer 1 on the water absorbing body 53. In this case, as shown in FIG. As shown in the drawing, a tapered hole 61 is provided in the water absorbing body 53 so as to contact the chamfered portion 31 having a tapered shape provided at the tip of the metal horn 15 over the entire circumference. The tapered hole 61 of the metal horn 15 and the tapered chamfered portion 31 of the metal horn 15 are in contact with each other over the entire circumference, and water is evenly supplied to the atomized surface 62 at the tip surface of the metal horn 15 and spraying can be performed from the entire atomized surface 62. As a result, the spraying efficiency is improved as compared with the conventional product, and energy can be saved.

FIG. 4 shows various water absorbing bodies 53 having different shapes. That is, the water absorbing body 53 may have an arbitrary shape such as a uniform cross-sectional shape, a front end narrowing shape, a thickness direction narrowing shape as shown in FIG. 4, and fine adjustment of the water supply transmission force is possible. That is, in FIG. 4 (a), the shape of the water absorbent body 53 made of the hydrophilic plastic porous body has a uniform cross-sectional shape without changing in the water supply direction, but in FIG. 4 (b) (c).
When the cross-sectional shape in the water supply direction is changed as shown in (d), (e), and (f) (that is, (b), (d), (e) in FIG.
(F), etc. can be made thin on the tip side, or a recess can be provided in the middle as shown in FIG. 4 (c)), and the cross section of water flow can be changed, and the ability of water supply can be changed. become.

Then, when the power switch 10 is turned on, a high frequency voltage having a frequency substantially equal to the mechanical resonance frequency of the metal horn 15 generated by the oscillation circuit section 9 is electrostricted by the power supply line 50.
Ultrasonic vibration applied to the electrostrictive element 14 and vibrated integrally with the metal horn 15 vibrates the atomizing surface 62 at the tip of the metal horn 15 by the amplitude expanding action of the metal horn 15. On the other hand, the water absorbent body 53 is guided by the first chemical liquid tank 20 to the tip by capillary action, and the guided water is absorbed by the atomizing surface 62 of the metal horn 15 and atomized by ultrasonic vibration energy. Is ejected. In the steady spray state, the metal horn 15 is continuously atomized, and the amount of water in the first chemical liquid tank 20 decreases. Therefore, water is replenished from the second chemical liquid tank 56 to the first chemical liquid tank 20, and the pressure in the tank is adjusted to a constant state by the action of the pressure adjusting unit 54. here,
When the spraying is completed and water supply is required, only the second chemical liquid tank 56 may be removed, water supplied and set again, and there is no need to touch the water absorbing body 53, which is very hygienic.

FIG. 5 shows a circuit diagram of the ultrasonic atomizing device,
When an external AC power supply adapter is connected to the jack 13, the switch 8 is switched and the battery circuit is opened so that the household AC power supply can be used.

[Advantages of the Invention] According to the present invention, as described above, a rigid water absorbing body made of a hydrophilic plastic porous body led out from a chemical liquid tank and an ultrasonic transducer are provided, and the ultrasonic transducer and the water absorbing body are provided. Since and are elastically abutted by an elastic body, a water absorbent body having a rigid hydrophilic plastic porous body can form a water absorbent body having a stable contact end surface, and fine spraying can be stabilized, Further, in terms of hygiene, there is an advantage that a more hygienic water absorber can be provided as compared with a fibrous body such as felt.

In addition, since the chemical liquid tank is composed of a first chemical liquid tank fixed to the apparatus housing and a second chemical liquid tank which is detachable from the first chemical liquid tank and which supplies water to the first chemical liquid tank, It is possible to improve the contact stability between the sound wave oscillator and the water absorbing body, realize stable spraying, and improve the usability as compared with the case of supplying water only to the second chemical liquid tank. That is, a hydrophilic hydrophilic plastic is a rigid body because it is necessary to provide another elastic body instead of elastic contact due to bending of the water absorbent body itself like a water absorbent body having flexibility and flexibility such as felt. Therefore, if this elastic contact force is too weak, the spray becomes unstable, and if it is too strong, the vibration of the ultrasonic vibrator is obstructed and the spray efficiency is reduced. Rigorously
Further, it is necessary to maintain the state, but the above-mentioned problem is solved by configuring the chemical liquid tank by the first chemical liquid tank and the second chemical liquid tank, and fixing the first chemical liquid tank to the device housing. Is something that can be done.

In addition, since the cross-sectional area of the water absorbent body made of hydrophilic plastic changes so as to change along the water supply direction, the hydrophilic plastic may have its shape tapered toward the tip side, or may have a recess in the middle. By doing so, it is possible to change the cross section of water to change the water supply capacity, and it becomes possible to adjust the excess water supply at the tip and the spray amount.

[Brief description of the drawings]

1 is an overall perspective view of the present invention, FIG. 2 is a sectional view of the same,
FIG. 3 is an enlarged cross-sectional view of the mounting portion of the ultrasonic transducer, and FIGS. 4 (a), (b), (c), (d), (e), and (f) are perspective views of embodiments of various shapes of the water absorbing body. 5 is a circuit of the present invention, 1 is an ultrasonic transducer, 2 is a chemical solution tank, 3 is a device housing, 20 is a first chemical solution tank, 53 is a water absorbing body, and 56 is a second chemical solution tank. Is.

Claims (3)

(57) [Claims] 1. A rigid water absorbing body made of a hydrophilic plastic porous body led out from a chemical liquid tank and an ultrasonic transducer, wherein the ultrasonic transducer and the water absorbing body are elastically abutted by an elastic body. An ultrasonic atomizer characterized by being made. 2. A chemical liquid tank is constituted by a first chemical liquid tank fixed to an apparatus housing and a second chemical liquid tank which is detachable from the first chemical liquid tank and is for supplying water to the first chemical liquid tank. The ultrasonic spraying device according to claim 1, wherein 3. The ultrasonic spraying device according to claim 1, wherein the water absorbing body made of a hydrophilic plastic porous body is formed so that its cross-sectional area changes along the water supply direction.