JPS62140667A - Ring oscillation with slit for ultrasonic atomization - Google Patents

Abstract

PURPOSE:To increase the amt. to be pulverized by an oscillation ring with slit having a large amplitude and to increase the flow rate of liquid spray by having the above-mentioned oscillation ring and forming edge parts to the inside surface of the oscillation ring. CONSTITUTION:The oscillator for ultrasonic atomization of an ultrasonic atomizer for pulverizing liquid such as spraying nozzle for an automobile or fuel nozzle for a gas turbine is constituted by forming many stages of the edge parts 12a for pulverizing the liquid to the inside surface 12 of the annular oscillation ring 11 having the slit S at one point, connecting one end of a supporting shaft part 3 to the outside wall 13 and connecting an ultrasonic wave generating means 4 to the other end of the shaft part 3. The amt. of the fuel pulverized by the oscillator is thereby increased and the fluctuation of the pulverized state by the characteristic and viscosity of the injected fuel is obviated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to a tll, such as an ultrasonic jet nozzle.
It relates to a wave saving device, in particular (1) an injection nozzle for an automobile, such as an electronically controlled gasoline injection valve or
Electronically controlled diesel injection valves, (2) Fuel nozzles for cast turbines, (3) Burners for industrial, commercial and household boilers, heating furnaces, heaters, (4) Industrial liquid sprayers, such as food, medicine, and agricultural chemicals. , drying jet "A" device for drying liquid materials such as fertilizer, temperature control and humidity control spray, sintered powder Kawamei A
(ceramic granulation), spray A coating device 1 reaction accelerator, and (5) liquid spray device for non-industrial liquids, such as pesticides)
The present invention relates to an ultrasonic atomizing vibrator that is suitably used in a cloth cloth, an extinguisher, etc., and is used in an ultrasweat wave saving device that atomizes liquid intermittently or continuously.

[Etachikashi] Conventionally, in the various fields mentioned in 2.2.2, liquids (in M.M. booklet, ``liquid'' is used to include not only liquids but also liquid substances such as suspension solutions), That is, ultrasonic atomization devices are widely used for atomization. Hereinafter, in this specification, the present invention will be described in connection with an On nozzle for a gasoline engine among the above various uses, but the present invention is not limited thereto.

In recent years, research has been conducted to improve the performance and efficiency of gasoline engines by attaching ultrasonic atomizers that atomize gasoline intermittently or continuously.

Conventionally, as one method for improving the efficiency of this type of Mi sonic atomization device, an ultrasonic atomization transducer 1 has been constructed as shown in FIGS. 11 and 12. That is, the vibrator l consists of an annular vibrating ring 2 for atomizing liquid fuel such as gasoline, and a support shaft part 3 connected to approximately the center of the outer wall of the ring 2, which supports the vibrator. An ultrasonic generating means 4 is provided at the other end of the shaft portion 3.

In this ultrasonic atomization vibrator 1, when gasoline is injected from an electronically controlled gasoline injection valve (not shown) to the ring 2, the ultrasonic generating means 4 is energized, and the ring 2 is continuously Vibrate. At this time, the ring 2 vibrates in the radial direction and the first
(Figure 2), the vibration atomizes the gasoline into ring 2.
Sprayed outward.

I'm sorry.
Point The ultrasonic atomization vibrator having the above configuration is configured to atomize gasoline supplied to the vibrating ring by vibration in the radial direction of the ring 2, but the vibrating ring that contributes to atomization of the liquid is integrated. Since the vibration ring 2 is configured in an annular shape, the amplitude of the radial vibration is like -'' on the circumference.On the other hand, the maximum permissible amplitude of the vibration ring 2 is the same as that of the support shaft shown in FIGS. 11 and 12. The permissible amplitude of this joint is often limited by the stress concentration at the joint (driving point) between the vibration ring 2 and the vibration ring 2, and the permissible amplitude of this joint is usually smaller than the permissible amplitude of other amplitude antinodes of the vibration ring 2 other than the joint. Therefore, there is a drawback that the allowable amplitude as a whole is lower than the allowable amplitude of the vibrating ring 2 alone.

Therefore, since the amplitude of the vibrating ring 2 is limited, the amount of gasoline atomized by the ring is limited, and there is a problem in that the injection flow rate of gasoline cannot be increased.

The invention was made in view of the above problem, and its purpose is to increase the amplitude of a vibrating ring member that vibrates and contributes to atomization of liquid, thereby increasing the atomization of liquid by the vibrating ring. It is an object of the present invention to provide an ultrasonic atomizing vibrator that increases the amount of liquid such as gasoline and the flow rate of liquid such as gasoline.

1jt) 111t [1st point is achieved by the present invention. In summary, the present invention consists of an annular vibrating ring having a slit at one location, and a support shaft portion having one end connected to the outer wall of the vibrating ring and the other end connected to ultrasonic generation means, The ring vibrator with a slit for ultrasonic atomization is characterized in that multiple edges are formed on the inner wall of the vibrating ring.

The reason why the amplitude of the vibrating ring is increased by the present invention is that vibration is not restricted at the free end of the thin plate that vibrates under bending and in the vicinity thereof, and therefore, the amplitude of the antinode of this part is generally larger than the amplitude of the antinode of the driving point. According to the present invention, due to the fact that
Obviously, the vibrating ring has a pair of free ends, and therefore, even if the amplitude of the driving point is controlled within the permissible value in consideration of stress concentration, the amplitude of the vibration antinode at the free end and its vicinity cannot be controlled by the conventional annular ring. The value in the vibrating ring can be increased.

Hereinafter, an uninvented ultrasonic atomization vibrator will be described with reference to FIGS. 1 to 10 showing one embodiment thereof.

Referring to FIGS. 1 to 3, a ring vibrator with a slit for ultrasonic atomization according to the present invention includes an annular vibration ring 11 having a slit S at one location. Further, the vibration ring 11 has an edge portion 12a on the inner wall 12 that atomizes the liquid, one end of the support shaft portion 3 is connected to the outer wall 13, and an ultrasonic wave generating means 4 is connected to the other end of the support shaft portion 3. are concatenated. It is preferable that the sleeve S of the vibrating ring 11 be disposed at a position facing the support shaft portion 3.

, TFL sonic frosting device 5, at least a portion of the vibrating ring 11 of the ultrasonic atomizing vibrator is disposed within the intake pipe 15 of the gasoline engine. Also, one of the vibration rings 11
An electronically controlled gasoline injection valve 14 is disposed on the gas cylinder side, and the gasoline spray body injected by the gasoline injection valve 14 is supplied to the vibrating ring 11 portion.

The formation mode of the slit S of the first f-shaped vibration ring 11 is as follows.
It may be a vertical slit as shown in FIG. 3, or it may be stepped as shown in FIG. The width should be set to an appropriate size, such as 0.05 mm or more, usually 0.05 mm or more, so that movement is not inhibited. I No,
It is assumed to be 5mm.

In addition, the shape of the vibration ring 11 is circular (the third
(Fig. 5), or may be polygonal as shown in Fig. 5. In either case, the length of the ring circumference is the wavelength of the ultra-pf wave attached to the vibrator. If we enter
It is assumed to be an integer multiple of input/2.

Furthermore, an edge portion 12 formed on the inner surface of the vibration ring 11
a can be defined by a triangular screw formed in the circumferential direction as shown in Figures 2 and 56, and the angle of the screw thread is 1.
Any angle between 0 and 150 degrees is selected, and the pitch is typically on the order of 0.5 mm to 5 mm. Also, the edge part 12
The length or height h of the inner wall surface forming a is usually 5 mm to 30 mm.
Therefore, the number of threads is 3 to 60 m. Further, the screw is not limited to a single thread screw, but may be a multi-thread screw such as a 2 thread to 4 thread thread.

The inner surface 12 of the vibration ring 11 is not limited to the triangular screw shape, but may be formed with a plurality of semicircular grooves to define an edge @ t 2 a as shown in FIG. 8. The edge portion 12a may be formed by a step that gradually decreases from a position protruding inward of the vibrating ring 11 to a position n close to the outer wall 13, as shown in FIG.

Furthermore, when the vibration ring 11 is manufactured by pressing a thin iron plate, it is also possible to form it into a corrugated shape 18 as shown in FIG. In this case, first a wavy cylindrical body is formed, and then a slit can be formed in the center thereof as shown by the two-dot chain line.

In the configuration described above, the gasoline from the gasoline injection valve 14 is transferred to the vibration ring 11 from the gasoline injection valve t14 (the first
The gasoline is injected toward the edge portion 12a near the edge portion 12a (see figure), and the gasoline is supplied to the edge portion 12a.6 The gasoline then flows downward along the inner wall surface 12 of the vibration ring 11.

At this time, vibration is applied to the ring 11 by the ultrasonic generating means 4 via the support shaft portion 3, and the ring 11 vibrates.

The vibrating ring 11 is formed with a slender (S), and the free end surfaces of the vibrating ring 11 do not interfere with each other at the slimmer (S) portion, and no resistance force is generated inside the vibrating ring 11. Therefore, not only is the vibration of the vibration ring 11 not limited, but the vibration on the slit forming side is gradually amplified as shown in FIG. 1O.

In the process of gasoline flowing down along the inner wall surface 12,
The flow is cut off in the radial direction of the vibrating ring 11 at each edge portion 12a, and the particles are atomized. Furthermore, the portions that are not atomized at the upper edge portion are continuously atomized by the lower edge portion 12a as they descend along the inner wall surface 12. In this way, if the amount of injected fuel is small, it will be placed at the top of the edge J 12 a, and if it is a large amount, it will be placed at the top of the edge J 12 a.
Since the grains are atomized over the entire area of a, the grain size of the grains ta is made uniform.

Therefore, stable fuel spraying can be performed in either case of intermittent atomization or continuous atomization. Furthermore, the amount of fuel atomized by the edge portion 12a increases, resulting in an increase in the fuel injection 'A flow rate.

The ultrasonic Yoikagawa transducer (second
One specific condition and various methods of B hill wave saving system using B hill wave saving system B using (Fig. 3 and Fig. 3) are as follows. Amplitude: 30 m (peak to peak) Frequency: 38 KHz Shape and dimensions of ring vibrator Diameter of inner wall of vibration ring (d): 40 mm Length (h):
15mm Thread shape Two triangular threads (screw thread angle 60 degrees) Number of threads: 5 Fuel t4: Gasoline flow 'JZ: l OCm' /
Sand injection pressure: 2.5 kg/crn'Temperature: Room temperature Vibration ring material: Titanium and iron It has a vibrating ring with a large slit, and by forming an edge part on the inner surface of the vibrating ring, the ψ of the fuel atomized by the vibrator increases. This has the effect that the chemical state (flow rate, particle size) does not change.

Therefore, since stable atomization is achieved, the ultrasonic atomization device using the ultrasonic atomization vibrator according to the present invention can significantly improve acceleration response and significantly reduce fuel consumption.

[Brief explanation of drawings]

FIG. 1 is a front view of an ultrasonic atomization device using an ultrasonic atomization vibrator according to the present invention. FIG. 2 is a front view of the ultrasonic atomization vibrator. FIG. 3 is a plan view of the sonic atomization vibrator a shown in FIG. 2. FIG. 4 is a front view of the vibrating ring seen from the slit direction, showing another shape of the slit. FIG. 5 is a plan view of a modified example of the ultrasonic atomization vibrator. 6 to 9 are cross-sectional views of various embodiments of the edge portion. FIG. 10 is an explanatory diagram of the vibration of the ultrasonic transducer according to the present invention. FIG. 11 is a front view of a conventional ultrasonic atomization vibrator. FIG. 12 is a diagram illustrating the vibration of a conventional ultrasonic atomization vibrator. 3: Support shaft portion 4/Ultrasonic generation means 10: Vibrator 11: Vibration ring 12: Inner wall 12a: Edge portion 13/External lid S Nislit No. 2 p21 Fig. 4 Fig. 5 Hiko 1 6th connection I Fig. 7 Fig. 8 Figure 9 Figure 10 Figure -11 Figure 12

Claims (1)

[Scope of Claims] 1) Consists of an annular vibrating ring having a slit at one location, and a support shaft having one end connected to the outer wall of the vibrating ring and the other end connected to ultrasonic generation means. . A ring vibrator with a slit for ultrasonic atomization, characterized in that an inner wall of the vibrating ring is formed with multi-stage edges. 2) The vibrator according to claim 1, wherein the multistage edge is defined by a thread formed on the inner wall of the vibrating ring. 3) The vibrator according to claim 1, wherein the multistage edge is defined by a plurality of rows of grooves formed on the inner wall of the vibrating ring. 4) The vibrator according to claim 1, wherein the multi-stage edge is defined by forming the inner wall of the vibrating ring in a step-like manner. 5) The vibrator according to any one of claims 1 to 4, wherein the slit is formed at a position facing the support shaft.