JPH02135169A - Ultrasonic atomizer - Google Patents

Abstract

PURPOSE:To uniformly and efficiently atomize a liq. from the whole atomization surface by providing a hole in a water absorptive body and bringing the circumference of the hole into contact with the periphery of the atomization surface on the tip of a metallic phone when the water absorptive body is brought into contact with the metallic phone of an ultrasonic vibrator. CONSTITUTION:The atomizer is provided with the water absorptive body 53 leading from a chemicals tank and the ultrasonic vibrator 1 consisting of an electrostrictive element 14 having the atomization surface 62 and the metallic phone 15. A tapered hole 61 is provided in the water absorptive body 53 so that the whole circumference of the hole is brought into contact with the chamfered part 31 of the phone 15. Namely, the whole circumference of the hole 61 is brought into contact with the tapered chamfered part 31 of the phone 15. Under such a constitution, a liq. absorbed in the water absorptive body 53 is supplied to the atomization surface 62 on the tip of the phone 15, atomized by the ultrasonic vibrational energy of the vibrator 1, and injected. Since the hole 61 is provided in the water absorptive body 53, water can be effectively supplied from the whole periphery of the atomization surface 62, and the water is uniformly and efficiently atomized from the whole atomization surface 62.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a method of flooding a vibrating horn with atomized liquid in an ultrasonic atomizer using ultrasonic vibration. As an ultrasonic spray device, JP-A-58-1
318f31 etc. have been proposed. In this conventional flooding method, the water absorbing body contacts only a portion of the tip of the metal horn in the circumferential direction.

[Problem B to be solved by the invention] However, as mentioned above, in the case where the water absorbing body contacts only a part of the tip of the metal horn in the circumferential direction, the part to which water is supplied is on the straight line where it is in contact with the water absorbing body. Because of this, it is difficult to supply water to the entire atomizing surface, and atomization occurs mainly from the part that comes into contact with the water absorbent. For this reason, there is a problem in that the atomization energy is used poorly in terms of atomization efficiency.

The present invention was invented in view of the above-mentioned conventional problems, and its purpose is to enable the outer periphery of the atomizing surface of the metal horn to come into contact with the water absorbing body over the entire circumference, thereby generating ultrasonic waves with high atomization efficiency. To provide type spray equipment.

[Means for Solving the Five Problems] In order to achieve the above object, the ultrasonic spraying device of the present invention has a structure in which the water absorbing body 53 led out from the chemical liquid tank 2 and the metal horn 15 of the ultrasonic vibrator 1 come into contact with each other. In this embodiment, a hole 61 is provided in the water absorbing body 5, and the periphery of the hole 61 is brought into contact with the outer periphery of the atomizing surface 62 at the tip of the metal horn 15.

[Function] In the present invention, the liquid (hereinafter simply referred to as water) absorbed by the water absorbing body 53 by the vibration of the ultrasonic transducer 1 is turned into fine particles n.
By inhaling this spray into the nasal cavity and oral cavity, it moistens the mucous membranes, soothes dry deafness of the mucous membranes, and relieves inflammation. In this case, a hole 61 is provided in the water absorbing body 5, and the n north surface 6 of the tip of the metal horn 15 is surrounded by the hole 61.
2, the outer periphery of the atomizing surface 62 at the tip of the metal horn 15 comes into contact with the water absorbing body 53 over the entire circumference, making the spray 7 more efficient.

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

As shown in FIG. 2, an oscillation circuit section 9 and a power switch 10 are included in the device housing song 3 formed of a synthetic resin molded product.
It has a built-in printed wiring board 16 mounted thereon, and a power supply section 11 is provided below it. The power supply section 11 is of a two-power supply type, and can be used as a power source by storing a dry cell battery 12, or can be connected to a jack to use an external AC power source as a power source. The ultrasonic vibrator 1 is composed of an electrostrictive element 14 that generates vibrations and a metal horn 15 that magnifies the vibrations.The electrostrictive element 14 is adhesively fixed to the metal horn 15, and the electrostrictive element is 14 through a power supply line 50.

An annular groove 17 is provided on the outer periphery of the metal horn 15, and the metal horn 15 is press-fitted into a horn holding frame 52 via an O-ring constituting an elastic body 51. Further, a tapered chamfer 31 is formed on the outer periphery of the tip of the metal horn 15 of the ultrasonic transducer 1. The chemical tank 2 is composed of a first chemical tank 20 fixed to the device housing and a second chemical tank 56 that is detachable from the first chemical tank 20 and is used to supply water to the first chemical tank 20. There is. Here, the first chemical liquid tank 20 is a fixed tank that is fixed to the device housing 3 so that it cannot be easily removed. A water absorbing body 53 made of a hydrophilic plastic porous body is press-fitted into the first chemical liquid tank 20 which is this fixed tank, and this water absorbing body 53 is configured to supply water to the ultrasonic transducer 1. ing. Here, in this embodiment, the hydrophilic plastic porous material constituting the water absorbing body 53 is, for example, manufactured by Asahi Kasei &! Product name: San Juan AQ
can be used. Further, a pressure adjustment section 54 is provided at the bottom of the first chemical liquid tank 20 to adjust the pressure inside the tank during spraying. In addition, four parts 55 are provided at the upper part of the first chemical liquid tank 20,
The fourth part 55 is for supplying water to the first chemical tank 20! ! The fitting protrusion 56a of the chemical liquid tank 56 of l'g2 is removably fitted. - An O-ring 57 is provided on the outer periphery of the first fitting protrusion 56a of the second chemical tank 56, so that when the fitting protrusion 56a is fitted into the recess 55, the connection is made airtight. In this case, the convex portion 55a provided at the bottom of the recess 55 of the first chemical tank 20 operates the valve 58 provided in the second chemical tank 56 to open the hole (not shown) provided in the recess g55. Water is supplied from the As a result, when water needs to be supplied to the first chemical tank 20, the second chemical tank 56
In this way, only the second chemical tank 56 can be removed to supply water.
The contact positional relationship between the ultrasonic vibrator 1 and the water absorbing body 53 fixed to the first chemical liquid tank 20 fixed to the device housing 3 is always constant, and stable spraying is guaranteed.

fP! FIG. 3 is an enlarged sectional view showing how the ultrasonic transducer 1 is attached to the housing. As shown in FIG. 3, the ultrasonic transducer 1 is press-fitted into a horn holding frame 52 via an elastic O-ring constituting an elastic body 51. Here, the ultrasonic transducer 1 constitutes an elastic body 51.
Since it is supported only by the ring, the vibration loss of the ultrasonic transducer 1 is kept to a minimum. Furthermore, the elasticity of the O-ring constituting the elastic body 51 allows the position of the ultrasonic transducer 1 to be adjusted to some extent easily. Then, the horn holding frame 5 holding the ultrasonic transducer 1 as described above is installed.
2 is an attachment method by screwing a male threaded portion 59 provided on the outer periphery to a female threaded portion 59a provided on the housing 3. Here, a pressurizing spring 60 is interposed between the horn holding frame 52 and the apparatus housing 1 to prevent rattling when the horn holding frame 52 is screwed into the apparatus housing 3. Therefore, during assembly, the positions of the ultrasonic transducer 1 and the water absorbing body 53 can be adjusted by rotating the horn holding frame 52. Here, the contact relationship between the water absorbing body 53 and the ultrasonic transducer 1 is such that the ultrasonic transducer 1 is brought into elastic contact with the water absorbing body 53 by the O-ring which is the elastic body 51. In this case, as shown in FIG. 3, a tapered hole 61 is provided in the water absorbing body 53 so as to be in contact with the tapered chamfered part 31 provided at the tip of the metal horn 15 on the entire circumference. Therefore, the water absorbent 5
The tapered hole 61 of No. 3 and the tapered chamfered portion 31 of the metal horn 15 come into contact with each other around the entire circumference, and water is uniformly supplied to the atomization surface 62 on the tip surface of the metal horn 15, and the entire surface of the atomization surface 62 is supplied with water. This makes it possible to spray more efficiently, and the spray efficiency is improved compared to conventional products, making it possible to save energy. Furthermore, even if the tapered hole 61 provided in the water absorbing body 53 has a shape as shown in FIG. 4(a), it may have a shape as shown in FIG. 4(1,). A similar effect can be expected even if the Also, Figure 4 (
By forming an upper tapered hole portion 61a with a larger diameter at the upper end of the tapered hole 61 as shown in b), sufficient atomization is possible even when the spray is at a wide angle. This is the optimal shape for wide-angle applications.

When the power switch 10 is turned on, a high frequency voltage having a frequency approximately equal to the mechanical resonance frequency of the metal horn 15 generated by the oscillation circuit section 9 is applied to the electrostrictive element 14 through the power supply line 50, and The ultrasonic vibrations generated by the metal horn 14 vibrate together with the metal horn 15, and the atomization surface 62 at the tip of the metal horn 15 is caused to vibrate greatly due to the amplitude expansion effect of the metal horn 15. On the other hand, water is guided to the water absorbing body 53 up to its tip by the first chemical tank 20 by capillary action, and this guided water is supplied to the atomization surface 62 of the metal horn 15 and atomized by ultrasonic vibration energy. It is squirted. Further, in the steady atomizing state, the water is continuously atomized by the metal horn 15, and the water in the first chemical tank 20 decreases. Therefore, water is replenished from the second chemical tank 56 to the first chemical tank 20,
In addition, the pressure inside the tank is adjusted to a constant state by the action of the pressure regulator 54. Here, when the spraying is finished and water supply is required, only the second chemical tank 5G is removed,
All you have to do is supply water and set it up again (there is no need to touch the water absorbent body 53 with your hands, which is very sanitary).

Fig. 5 shows a circuit diagram of the ultrasonic inhaler. When an external AC power source is connected to the shank 13, the switch 8 is switched to open the battery circuit and use the household AC power source. is now possible.

Although the embodiment in which the water absorbent body 53 is made of hydrophilic plastic has been described above, the water absorbent body 53 is not necessarily limited to hydrophilic plastic, and may be made of a nonwoven fabric such as felt that supplies water by capillary action.

[Effects of the Invention] As described above, in the present invention, a hole is provided in the water absorbent body when the water absorbent body drawn out from the chemical liquid tank comes into contact with the metal horn of the ultrasonic vibrator, and the periphery of the hole is Since the tip of the metal horn is brought into contact with the outer circumference of the atomizing surface, water can be supplied more effectively from the entire outer circumference of the atomizing surface of the ultrasonic vibrator, and more uniform and efficient spraying can be achieved than the entire atomizing surface. This makes it possible to provide an ultrasonic injection device that is efficient, easy to use, and stable.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of the present invention, FIG. 2 is a sectional view of the same as above,
Figure 3 is an enlarged sectional view of the contact portion between the metal horn of the ultrasonic transducer and the water absorber, and Figures 4 (a) and (b) are cross sections of each embodiment showing examples of contact between the metal horn and the water absorber, respectively. Figure, t5
Figure 5 is a circuit diagram of the present invention, in which 1 is an ultrasonic transducer, 2
1 is a chemical tank, 15 is a metal horn, 1 is a hole, and 62 is an atomization surface.

Claims (1)

[Claims] (1) A hole is provided in the water absorbent body and the periphery of the hole is brought into contact with the outer periphery of the atomizing surface at the tip of the metal horn when the water absorbent body drawn out from the chemical solution tank contacts the metal horn of the ultrasonic vibrator. An ultrasonic spray device characterized by: