JPS6295165A - Vibrator for ultrasonic atomization - Google Patents

Abstract

PURPOSE:To increase the vibration amplitude of a vibrating ring member by forming the title vibrator with a split ring body having a multistage edges on the inner wall and a supporting shaft part with one end connected to the outer wall of the split ring body and the other end connected to an ultrasonic wave generating means. CONSTITUTION:With respect to the ultrasonic atomize used, for example, for pulverizing the gasoline of a gasoline engine, the vibrator for ultrasonic atomization is provided with the split ring body 11 formed by splitting an annular vibrating ring into plural units, the edge part 12a for pulverizing a liq. is provided on the inner wall 12, and the supporting shaft part 3 with one end connected to the outer wall 13 and the other end connected to the ultrasonic wave generating means 4 is furnished. Consequently, the amt. of the liq. to be pulverized by the vibration is increased, and the pulverized state is made constant at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to ultrasonic injection devices such as Mi sonic injection nozzles, and in particular to (1) automatic heavy-duty injection nozzles, e.g. So-IJ injection valves or electronically controlled diesel injection valves, (2) Fuel nozzles for gas turbines, (3) Industrial, commercial and domestic boilers, heating furnaces, heaters/Hena, (4) Industrial liquids Sprayers, such as drying sprayers for drying liquid materials such as food, pharmaceuticals, agricultural products, fertilizers, temperature control and humidity control sprays, baked powder sprayers (ceramic granulation), spray coating equipment, reaction accelerators , and (5
) Liquid sprayers for liquids other than those for lower beams, such as pesticide sprayers,
The present invention relates to an ultrasonic ejection vibrator used in an ultrasonic ejection device that is suitably used in a disinfectant sprayer and the like and that atomizes liquid intermittently or continuously.

Conventionally, liquids (4+1 for water) have been used in various fields as mentioned above.
, IF, "liquid" is used to include not only liquids but also liquid substances such as suspension solutions. ) Ultrasonic spray devices are widely used to atomize or atomize. Hereinafter, in this specification, one of the applications of the I-socket will be described in connection with an injection nozzle for a gasoline engine, but the invention is not limited thereto.

In recent years, gasoline engines have been equipped with ultrasonic injection devices that atomize gasoline intermittently or continuously, increasing the engine's performance by increasing J1 performance. ? Research has been conducted to improve the i-41 effect.

Conventionally, as a method for improving the efficiency of this type of super 1'' f-wave injection device, an ultrasonic injection transducer l has been constructed as shown in FIGS. 10 and 11. The vibrator 1 consists of an annular vibrating ring 2 for completely reducing liquid fuel such as gasoline to zero, and a support shaft portion 3 connected approximately to the center of the outer IV of the ring 2. Ultrasonic generating means 4 is installed at the other end of the support shaft portion 3 .

This super 1'' wave injection vibrator 1 is activated by ultrasonic generation T'-4 when the electronically controlled gasoline injection valve (not shown) injects the gas into the ring 2. 2 vibrates continuously. At this time, the ring 2 vibrates in the radial direction (FIG. 11). 1 The gasoline is atomized by the vibration and is injected to the outside of the ring 2.

&11”? In the super 7x wave injection vibrator with the 1□'II 1 person F configuration, the gasoline supplied to the vibrating ring is atomized by vibration in the radial direction of the ring 2. Since the vibrating ring with S'j is integrally formed in an annular shape, the amplitude of the amplitude antinode of the radial vibration is uniform on the circumference 1-, while the allowable maximum amplitude of the vibrating ring 2 is It is often limited by stress concentration at the joint (driving point) between the support shaft portion 3 and the vibration ring 2 shown in FIGS. 1O and 11. Since the permissible amplitude of this joint is usually smaller than the permissible amplitude of the other amplitude antinodes of the vibrating ring 2 except for the joint, there is a drawback that the permissible amplitude as a whole is lower than the permissible amplitude of the vibrating ring 2 body.

Therefore, by limiting the amplitude of the vibrating ring 2, 1;
There was a problem in that the number of injection waves of gasoline was limited, and the interval between gasoline injection waves could not be increased.

The present invention has been made in view of the problem described in "-", and its purpose is to increase the amplitude of a vibrating ring member that vibrates and contributes to atomization of liquid. It is an object of the present invention to provide an ar'i wave injection vibrator which increases the amount of atomized particles and increases the amount of gasoline sprayed.

110G2. Means for -I- The objects described above are achieved by the present invention. In summary, the present invention includes a ring segment body formed by dividing an annular vibration ring into a plurality of parts, and a ring segment body having one end connected to an outer wall of each ring segment body.
1. A vibrator for ultrasonic jetting, characterized in that one end is comprised of a support shaft portion connected to an ultrasonic generation stage, and a multistage edge is formed on the inner wall of the ring division body. be.

The reason for the increased amplitude of the vibrating ring according to the invention is due to the fact that the amplitude of the antinode at the free end of the flexurally vibrating sheet and its vicinity is generally greater than the amplitude of the central antinode, which is the driving point. Obviously, the ring segment necessarily has a pair of free ends due to its shape, so even if the amplitude of the driving point is controlled within the allowable value in consideration of stress concentration, the vibration antagonism at the free end and its vicinity The amplitude of can be increased over the value in an open conventional annular vibrating ring.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An ultrasonic ejection vibrator according to the present invention will be described below with reference to FIGS. 1 to 9 showing one embodiment thereof.

Referring to FIGS. 1 to 3, the ultrasonic jetting vibrator according to the present invention has a plurality of annular vibration rings, for example, 2.
In this embodiment, the ring division body 11 is divided into three or four parts, and the ring division body 11 divides the vibrating ring into half. It is said to be a pair of halved rings,
Therefore, in this embodiment, the harmonic rate wave jet element is constituted by two half-ring oscillators 10 disposed coaxially. To explain further, each tono-1 reeling vibrator 10 includes a half ring 11 having an edge portion 12a for atomizing liquid on an inner wall 12, and one end connected to an outer wall 13 of the half ring 11. The other end is provided with a support shaft portion 3 to which an ultrasonic wave generating means 4 is connected. Also, l'= ;Ill end face 1 of the half ring 11
1a are arranged facing each other with a distance of It.

At least half the ring 11U of the ultrasonic injection vibrator is disposed within the intake pipe 15 of the gasoline engine. Further, an electric R-controlled gasoline injection valve 14 is disposed upstream of the half ring 11 so that the fuel injection A body injected from the gasoline injection valve 14 is supplied to the half ring 11. configured.

'l'=;1.1 Halved end face 1 of rilling 11
1a may be a vertical plane as shown in FIG. 1, or may be stepped as shown in FIGS. are placed an appropriate distance apart.

Further, the shape of the half ring 11 may be an arcuate shape (FIG. 3) as described in L, but it may also be a polygon as shown in FIG. 4. That is, the ring 9111 can be formed by dividing a circular or polygonal annular ring into a plurality of parts.

Furthermore, an edge portion 1 formed on the inner surface of the old split ring 11
2a can be defined by a triangular screw formed in the circumferential direction as shown in FIGS. 2 and 5, and the angle of the screw thread is 1.
Any angle between 0 and 150 degrees is selected, and the pitch is usually about 0.5 mm to 5 mm. Also, the edge portion 12
The length or height h of the inner wall surface forming a is usually 5 mm to 30 mm.
mm, and therefore the number of screw threads is 3 to 60.

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.

"F";! :l The inner surface 12 of the ring 11 is not limited to the triangular screw shape, but may be formed with a plurality of circular grooves to define the edge portion 12a as shown in FIG. 1. Edge? B12a may also be formed.

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

In the 1U configuration, gasoline from the gasoline injection valve 14 flows through the gasoline injection valve F14 (of the half ring 11).
(see Fig. 1) toward the edge portion 12a near the
Gasoline is supplied to the edge portion 12a. The gasoline then flows downward along the inner wall surface 12 of the half-ring 11.

At this time, vibrations are applied to the ring 11 via the support shaft part 3 by the ultra-1-K wave generation stage 4, and the 1-core ring 11
vibrates, and thus the half-ring vibrator 1O110 vibrates at the same time. This vibration is l'=;1,1 rilling 11
Since the end faces 11a of the half rings 11a are spaced apart from each other by lL, there is no interference between the two halves, and no resistance force is generated inside the half ring 11. Therefore, not only is the vibration of the half link 11 not limited, but the vibration of the half link 11 is not restricted. The vibration on the end face 11a side is gradually amplified as shown in FIG.

In the process of gasoline flowing down along the inner wall surface 12,
At each edge portion 12a, the flow is cut in the radial direction of the half-ring vibrator 10, and the particles are atomized into 11 particles. Further, the portion that is not atomized at the upper edge portion is continuously atomized by the lower edge i'1l12 as it descends along the inner wall surface 12. In this way, when the amount of injected fuel is small, the fuel is atomized in the upper part of the edge portion 12a, and when the amount of injected fuel is large, it is atomized over the entire area of the edge portion 12a, so that the atomized particle size is made uniform.

Therefore, in either case of intermittent atomization or continuous atomization, stable atomization operation of the fuel 1 can be performed. Furthermore, the amount of fuel 414 atomized by the edge portion 12 increases, resulting in an increase in the amount of fuel injected An.

One specific condition and various dimensions of an ultrasonic injection device using the ultrasonic injection vibrator (Figures 2 and 3) related to unreleased 111 explained below are as follows. .

Output of supern''1 wave generation means: 10W Amplitude of half-ring oscillator: 30 lm (peak to peak) Frequency: 3BKHz゛t'=;
1.11 Shape of Rilling oscillator Mapping method 'V-;
0cm Thread shape: Triangular thread (thread angle 60 degrees) Thread 111 = 5 Fuel: Gasoline flow: I3-:
10cm'/sec Injection pressure: 5kg/cm'Temperature
: Room-temperature soil - Materials for J-Ring - Titanium and Ironfish Tate 2A Section -■-1 As explained, the present invention uses a plurality of vibrating ring segmented bodies with a larger amplitude than the conventional one, By arranging them so that they are spaced apart and by forming an edge part on the inner surface of each ring, the amount of fuel atomized by the vibration f- increases, and the properties of the injected fuel , it has the effect that the state of atomization (meteor, particle size) does not change depending on the viscosity.

Therefore, since stable atomization is achieved, the ultrasonic injection apparatus using the ultrasonic injection vibrator according to the present invention can significantly reduce fuel consumption.

[Brief explanation of drawings]

FIG. 1 is a front view of an ultrasonic injection device using an ultrasonic injection vibrator according to the present invention. FIG. 2 is a front view of the ultrasonic jetting vibrator. FIG. 3 is a top view of the ultrasonic jetting vibrator shown in FIG. 2. FIG. 4 is a plan view of a modification of the ultrasonic jetting vibrator. 5 to 8 are cross-sectional views of various embodiments of the edge portion. FIG. 9 is a vibration explanatory diagram of a vibrator for ejecting ultra-N''F waves. FIG. 10 is a front view of a conventional vibrator for ejecting Jfl:Y waves. This is a vibration pre-injection oscillator for fl-j'f wave injection. 3: Support shaft section 4: Ultrasonic wave generating means 10: Ring segment 12: Inner wall 12a: Edge section 13/outer wall 11a + edges Fig. 2 4 Figure 18 Figure 9 Figure 10 ■ Figure 11

Claims (1)

[Claims] 1) A ring segment formed by dividing an annular vibration ring into a plurality of parts, one end of which is connected to the outer wall of each ring segment, and the other end of which is connected to ultrasonic generation means. 1. A vibrator for ultrasonic jetting, characterized in that the inner wall of the ring division body is formed with multi-stage edges. 2) The ultrasonic ejection vibrator according to claim 1, wherein the multistage edge is defined by a thread formed on the inner wall of the ring segment. 3) The ultrasonic jetting vibrator according to claim 1, wherein the multistage edge is defined by a plurality of rows of grooves formed in the inner wall of the ring segment. 4) The ultrasonic ejection vibrator according to claim 1, wherein the multi-stage edge is defined by forming the inner wall portion of the ring segment into a stepped shape. 5) The vibration for ultrasonic injection according to any one of claims 1 to 4, wherein the ring division body is a half ring formed by dividing an annular vibration ring into two. Child.