JPS6343151B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrasonic atomization device used in nebulizers, mixers, oil combustors, and the like.

FIG. 1 shows a conventional ultrasonic atomization device. In the figure, 1 is a piezoelectric vibrating body made of piezoelectric material,
Electrodes 2 and 3 are provided on both the front and back surfaces, and a horn 4 (made of iron, aluminum, nickel, etc.) for transmitting vibrations is bonded to the electrodes 3. The other end of the horn 4 protrudes in the shape of a cone, and an atomizing port 5 is opened at the tip of the conical portion, and an inlet port 6 is opened at the outer periphery of the base of the conical portion. A liquid passage 7 communicating between 5 and 6 is formed in an L-shape. 8 applies a voltage between electrodes 2 and 3,
This is an electric circuit that generates vibrations in the vibrating body 1, which also causes vibrations in the horn 4. Reference numeral 9 denotes a tank for storing liquid to be atomized, the bottom of which is communicated with the suction port 6 of the horn 4 through a guide pipe 10.
Note that 11 is a joint.

Therefore, the liquid in the tank 9 flows into the horn 4 due to gravity.
The liquid flows into the liquid passage 7 inside. On the other hand, the vibrations generated in the vibrating body 1 are transmitted to the horn 4 and concentrated at the tip side of the horn 4, so that the liquid in the liquid passage 7 is atomized near the atomization port 5 and sprayed outside the port 5.

In the above conventional example, the horn 4 and the vibrating body 1
Since this is natural cooling with air, the cooling is not sufficient, and if a large input is applied to the vibrating body 1 to increase the amount of atomization, its temperature will rise and the vibrating body 1 itself will be damaged. It was hot. In order to eliminate this drawback, for example, water cooling can be used, but
There is a problem in that the equipment required for this purpose is enormous in terms of both mechanism and cost, making commercialization virtually impossible.

The present invention has been made to eliminate these drawbacks, and provides a device with a simple structure and good atomization performance by using the liquid to be atomized also for cooling.

Hereinafter, an embodiment of the present invention will be described with reference to FIG. 2, where the same parts as in FIG. In FIG. 2, reference numeral 12 denotes a liquid tank for storing liquid 13 to be atomized, and a horn 4 passes through the tank 12 so that its main part is located on the lower side of the tank 12. Numerals 14 and 15 are rubberin packings that watertightly seal the penetrating portion of the horn 4, so that the vibrations of the horn 4 are not suppressed. In this device,
It goes without saying that the tip of the horn 4, that is, the atomizing port 5, is provided outside the tank 4, but the reason why the vibrating body 1 including the electrodes 2 and 3 is provided outside the tank 4 is to ensure electrical insulation from the liquid 13. This is to ensure that. Therefore, as long as electrical insulation is ensured, the vibrator 1 portion may be located within the tank 4.

According to the above-mentioned device, the horn 4 is in contact with the liquid 13.
The vibrating body 1 is also cooled indirectly via the horn 4, and the vibrating body 1 is also air-cooled, so that the cooling effect is significantly increased. Therefore, even if a large input is applied, the temperature will not become too high and damage will not occur. Since the liquid 13 naturally flows into the passage 7 due to the head difference between the suction port 6 and the liquid level, a large amount of liquid 13 is atomized by the vibration based on the above-mentioned large input and is sprayed from the atomization port 5. Therefore, compared to the past, the guide tube 10 is not required at all, there is no need to add a cooling device to enable large input, and the structure is simple and the atomization performance is good ( In other words, it becomes a device capable of large inputs.

As mentioned above, in the present invention, the liquid tank storing the liquid to be atomized is also used as a cooler for the horn, so there is no need to add a special cooler to cool the horn, and the present invention is small and compact. A device with a simple structure and a large amount of atomization can be obtained.

[Brief explanation of the drawing]

FIG. 1: Schematic diagram of a conventional device; FIG. 2: Schematic diagram of a device of the present invention. Code 1: piezoelectric vibrator, 4: horn, 5: atomization port, 7: liquid passage, 12: liquid tank.

Claims (1)

[Claims] 1. By forming a liquid passage communicating with an atomization port opened at the tip of the horn in a horn equipped with a piezoelectric vibrating body, and supplying liquid from the suction port at the other end of this liquid passage, In an ultrasonic vibration device configured to atomize the liquid, a liquid tank is provided to store the liquid to be atomized, and at least a horn is positioned within the liquid tank, and the atomization port of the horn is placed outside the liquid tank. 1. An ultrasonic atomizer, characterized in that the ultrasonic atomizer is installed at a location, and the horn is covered with the liquid.