JPS6020439Y2 - Ultrasonic atomizer - Google Patents

Description

[Detailed Description of the Invention] The purpose of the present invention is to make atomized fine particles uniform in a liquid fuel combustion device using ultrasonic waves, and to prevent inconveniences such as partial abnormal combustion due to the inclusion of coarse droplets.

Conventionally, in such an ultrasonic combustion device, it is common to have one tongue plate installed at an angle inside the inner cylinder, or to have no tongue plate, and the atomization for combustion in a part of the burner. Because the particle size of fine particles is uneven and coarse droplets are mixed in,
In contrast to a combustion flame that is close to vaporization combustion due to only fine particles, red-fire combustion occurs due to coarse droplets, which has the disadvantage of making it difficult to stabilize and homogenize the combustion state.

The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a container, and an ultrasonic transducer 3 enclosed in a backing 2 made of a rubber-like elastic material is attached to the center of the bottom of the container in a sealed manner via an O-ring 6 using presser fittings 4 and 5.

7 is an ultrasonic oscillator.

Reference numeral 8 denotes a blower for supplying combustion air, the blower opening of which is open to the side surface of the container 1.

9 is an inner cylinder, and there is a metal tongue plate Al01 tongue plate B11 inside.
are attached at appropriate intervals so that their central axes, that is, the directions in which they cross the inside of the cylinder 9, are perpendicular to each other, and a burner 12 is attached to the upper part of the inner cylinder 9 in series.

13 is liquid fuel.

In the above configuration, when the ultrasonic oscillator 7 is driven, the ultrasonic vibrator 3 resonates in the thickness direction, a liquid column is generated from the liquid fuel 13 above, and fine particles are generated from near the tip of the liquid column.

On the other hand, combustion air is blown into the container 1 by the drive of the blower 8, passes through the gap between the inner cylinder 9 and the tongue plate A10, and further through the gap between the inner cylinder 9 and the tongue plate Bll, and mixes with the liquid fuel particles. The fuel is sent to the burner 12, where it is ignited and burned by a suitable ignition means (not shown).

At this time, since the tongue plate AIO and the tongue plate Bll are arranged so that their central axes are perpendicular to each other as shown in FIG. 2, some of the liquid column and coarse particles are blocked by the tongue plate AIO,
It is collected through the inner surface of the inner cylinder 9.

Next, the particles that have passed through the tongue plate AIO collide with the tongue plate Bll, and since the fine particles have a small mass, they are sent to the burner 12 along with the combustion air through the gap with the inner cylinder 9.

On the other hand, coarse grains have a large mass, so they collide with the tongue plate Bll,
It becomes a liquid and is collected.

The tongue plate Al01 and the tongue plate Bll are usually constructed with an appropriate angle in order to avoid the adverse effects of reflection on the ultrasonic transducer 3 and to facilitate collection of adhered particles in liquid form.

In the present invention, a liquid fuel combustion device using ultrasonic waves is used, but it may also be used for purposes such as making the particle size uniform and preventing coarse particles from being mixed in when atomizing water, chemical liquid, etc. It is clear that in order to achieve uniformity, it is sufficient to increase the number of tongue plates.

As described above, according to the present invention, it is possible to obtain uniform liquid particles with almost no contamination by coarse droplets by using an extremely simple structure in which the tongue plate is disposed perpendicularly within the inner cylinder containing the liquid column. Especially in combustion devices, it exhibits great effects such as being able to obtain a good flame with a stable air-fuel ratio.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an ultrasonic combustion device showing an embodiment of the present invention, and FIG. 2 is a partial sectional view taken along the line XX in FIG. 1... Container, 3... Ultrasonic vibrator, 9
...Inner tube, 1G, 11...Tongue plate.

Claims (1)

[Scope of utility model registration request] In a device that atomizes a liquid in a container by driving an ultrasonic vibrator attached to the inner bottom of the container, a plurality of tongue plates located at an angle in an inner cylinder containing a column of the liquid are arranged in the same tongue. 1. An ultrasonic atomization device characterized in that the plates are arranged so that the directions across the inside of the inner cylinder are sequentially orthogonal to each other.