JPS61143249A - Liquid spraying device - Google Patents

Abstract

PURPOSE:To aim at the promotion of efficiency in spraying operations as a spraying angle of a sprayed fluid is made to be changed, by installing a controlling device which controls feed of an auxiliary fluid and changes a jet deflection angle. CONSTITUTION:On bottom wall 12g of a flow passage 12 surrounded with conversion flow walls 12c and 12d, each of auxiliary fluid intake ports 14a and 14b are opened, and each of auxiliary fluid feed pipes 2a and 2b is connected to each of these intake ports 14a and 14b. These feed pipes 2a and 2b lead to a fluid feed source, and in the point midway in the route, there are provided with solenoid valves 3a and 3b which control the feed of an auxiliary fluid. These solenoid valves 3a and 3b are opened or closed by a control circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fluid dispersion element, and more particularly to a fluid dispersion element whose dispersion angle range can be variably controlled.

[Conventional technology]

The fluid dispersion element of this rod has a nozzle that sends out a jet flow and a jet flow path that guides the jet flow to a dispersion opening, and returns a part of the jet flow to the upstream side or directs the negative pressure generated by the jet flow to the upstream side. This device causes the jet to be deflected and vibrated periodically within the jet flow path, and it is possible to spray the fluid without installing any mechanical moving parts, and it can be used as a window washer nozzle for vehicles, a watering nozzle for agriculture and engineering, or an Il'l Spraying is used in a wide range of applications such as nozzles.

[Problem that the invention seeks to solve]

By the way, when used in window washer nozzles, there is a strong demand for efficient cleaning by spraying the cleaning liquid in a concentrated manner on heavily soiled areas.

Furthermore, even in cases such as paint spraying, it would be convenient to be able to change the paint spraying range depending on the size and direction of the object to be painted.

SUMMARY OF THE INVENTION In view of the above-mentioned requirements, it is an object of the present invention to provide a fluid dispersion element having a simple structure and capable of changing a fluid dispersion angle range as required.

[Means for solving problems]

In FIG. 1, the fluid dispersion element 1 is equipped with a nozzle 11 for sending out a jet, a jet flow passage 12, and a spray opening 13, and an auxiliary fluid at a predetermined pressure is jetted into both left and right sides of the flow passage 12. Auxiliary fluid introduction port 14a introduced into the flow path 12
, 14b is the frontage. And each of the above introduction ports 1
4. The auxiliary fluid supply paths 2a and 2b leading to the auxiliary fluids a and 14b are provided with control means 3a and 3b for controlling the supply of the auxiliary fluid and changing the deflection angle of the midstream.

[action, effect]

Each inlet port 14a, 14 is controlled by the control means 3a, 3b.
, b, when the auxiliary fluid is supplied to the jet flow path 12.
As the pressure increases on the right and left sides or on both sides, the auxiliary fluid flowing in from the inlet 14a114b flows with a constant momentum toward the dispersion opening 13. The pressure increase and momentum of the auxiliary fluid cause the spray angle of the spray fluid to change. .

If such a fluid dispersion element is used as a vehicle window washer nozzle, it is possible to efficiently clean only the heavily soiled portions of the windshield, and if used as a $1 spray nozzle, it can spray paint depending on the object to be painted. By changing the spraying range, wasteful consumption of coating r11 can be prevented.

〔Example〕

As shown in FIG. 2, the fluid dispersion element 1 has a base plate 1a and a cover plate 1b abutted against the base plate 1a.

A supply pipe 5 for supplying the main fluid is connected to the spreading cord 1, and a recess is formed in the upper surface of the base plate 1a at a predetermined depth, and the recess communicates with the supply pipe 5. From the upstream side, the fluid supply port 15, nozzle 11, and jet flow path 1 are
2 and a dispersion opening 13.

The fluid dispersion element 1 shown in this embodiment is an element previously proposed by the inventors (Japanese Patent Application No. 59-157872), and its ejection channel 12 is directed toward the center of the nozzle 11 as shown in FIG. The side walls are formed symmetrically in the horizontal direction, and the width of the side walls is widened in a stepped manner, and the drift walls 12a, 1'2b, 1'2b,
Diversion wall 12c112d and diversion! ! 12e112f.

Now, the flow path 12 surrounded by the above-mentioned commutation walls 12c and 12cl
The bottom wall 12g has auxiliary fluid inlets 14a and 1, respectively.
4b is opened, and each of the above introduction ports 14a, 11+
An auxiliary fluid supply pipe 2a12b is connected to each of the auxiliary fluid supply pipes 2a12b. These supply pipes 2a12b reach the flashing fluid supply source, and a solenoid valve 3 that controls the supply of auxiliary fluid is located on the way.
a and 3b are the configurations. The solenoid valves 3a and 3b are opened and closed by a control circuit 4.

When both solenoid valves 3a and 3h are closed, the inlet 14
No auxiliary fluid is supplied to a and 14b, and in this state, the jet F is periodically deflected and dispersed symmetrically at an angle of 2θ, as shown in FIG. 3 (1). (arrow in figure). That is, due to the entrainment flows F1 and F2 into the jet flow F, 9 pressures are generated between the jet flow F and the deflection walls 12a and 121), and the jet flow F is attracted and deflected by either of the deflection walls 12a and 12b ( The solid line in the figure shows the state where the flow is attracted by the drift wall 12h). When the jet F is deflected, a part of it collides with the dividing walls 12e and 12f, and the diverting walls 12C,
The branch flows F3 and F4 are directed in the 12d direction, and the branch flows F3 and F
4 grows according to the amount of deflection of the jet F, and eventually collides with the jet F from a direction perpendicular to the jet F4 (the figure shows just before the collision of the branch F4)
, which pushes it in the opposite direction (dashed line in the figure). By repeating this process, the jet F is periodically deflected and sprayed from the spray opening 13. This is shown again in Figure 4 (
Shown in 1). In addition, in FIG. 4, the auxiliary fluid supply pipe 2a
The X mark 12b indicates that the electromagnetic valves 3a and 3tl (Fig. 1) provided therein are closed and the supply of fluid is stopped.

Now, open the solenoid valve 3a and supply the auxiliary fluid at a predetermined pressure to the inlet 1.
4a, the pressure in the left half of the jet flow channel 12 (FIG. 1) increases. At this time, the auxiliary fluid is distributed through the dispersion opening 1
3 and generates momentum in the right direction l\ (Fig. 3 (2)). Due to the pressure increase, the jet flow F in the jet flow path 12 is deflected to the right and collides with the dividing wall 12f,
The flow is divided in the direction of the dispersion opening 13 and the diversion wall 12d.

At this time, the flow of the jet F toward the dispersion opening 13 receives the momentum of the auxiliary fluid in the right direction, and becomes almost straight forward.

Next, commutation! I! The jet flowing in the direction 12d collides with the jet F again after passing through the diversion wall 12d, pushes the jet F back to the left, and returns the jet F to a substantially straight traveling state.

This straight jet stream is injected in a direction inclined by θ to the right due to the rightward momentum of the auxiliary fluid (FIG. 3 (3)). The jet flow E, which has returned to a straight traveling state, is deflected to the right again because the pressure on the left half surface is high.

By repeating this operation, the jet stream becomes the fourth
As shown in Figure (3), it is scattered only in the right direction at an angle of θ. When the solenoid valve 3b is opened instead of the solenoid valve 3a, the inlet 14h is opened.
More auxiliary fluid is introduced, and as a result, the jet flow F is dispersed only in the left direction at an angle of θ (FIG. 4 (2)).

When both the solenoid valves 3a and 3b are opened, the pressure increase and momentum imparted by the auxiliary fluid are equal on both the left and right sides of the jet F, so the deflection of the jet F is limited to either the left or right direction, as shown in FIG. As shown in 4), the jet flow F sent out from the dispersion opening 13 has a narrow angle θ along the central axis of the opening 13.
distributed within.

FIG. 5 shows an example in which the fluid dispersion element 1 is used in a vehicle window washer device. In the figure, dispersion elements 1 are provided at two locations on the left and right in front of the lower side of a windshield W of a vehicle. The main fluid supply pipe 5 is connected to a washer pump 61 attached to the washer tank 6, and the auxiliary fluid supply pipe 2a12b is branched from the supply pipe. The washer pump 61 and the electromagnetic valves 3a and 3b in the supply pipe 2a12I) are operated by the control circuit 4.

A circuit diagram of the control circuit 4 is shown in FIG. In the figure, 41 is a spray mode selection switch, 71.2 is a washer switch, and 7
is a battery, and 31a and 31t+ are solenoid valves 3a and 3.
This is the electromagnetic coil of b. The selection switch 41 is a fixed contact 4
1a, 41fl, 41c, . . . 11d, and a movable contact 4.1e which contacts and conducts these. When the washer switch 12 is turned on while the selection switch 41 is in the position (as shown in the figure), neither the electromagnetic coils 31a nor 31b are energized, and only the washer pump 8-61 starts to spray. As a result of the cleaning liquid as the main fluid being sent to the element 1, the cleaning liquid is spread over a wide area indicated by Wl, W2, and W3 in FIG.

When the selection switch 41 is in the 8th position, the contacts 41b and 4Id are electrically connected, and when the washer switch 42 is turned on, the electromagnetic coil 31b is energized and the electromagnetic valve 3b is opened. This results in
Along with the main fluid, the auxiliary fluid flows through the inlet 14b of the dispersing element 1 (
1), and as a result, the cleaning liquid is sprayed only in the range Wl in the figure.

When the selection switch 41 is set to the 0th position or the 0th position, the cleaning liquid is sprayed in the range W3 or W2 in the figure accordingly.

In this manner, the cleaning liquid can be sprayed concentratedly only on the heavily soiled portions of the window glass Wl, thereby allowing efficient cleaning.

Inlet port 14. a, 14b are not necessarily commutation walls 12C11
It is not necessary to provide it on the bottom wall 12 (1) of the jet flow path 12 surrounded by 2d. For example, as shown in FIG. As shown in FIG. 8, they can also be provided on the deflection walls 12a, 12b and the diversion walls 12c, 12d that constitute the side walls of the jet flow path 12.

The present invention can also be applied to a fluid dispersion element 1 having a configuration as shown in FIG. The illustrated spreading element 1 has negative pressure introduction passages 121 and 122 extending from the frontage wall of the spreading opening 13 to the vicinity of the nozzle 11.
The fluid dispersion element 1 has a negative pressure generated by the jet sprayed from the opening 13 and acts on the jet sprayed from the nozzle 11 upstream of the opening 13 to cause deflection vibration. The bottom wall 12 of the jet flow path 12 of
0, an auxiliary fluid inlet 148114h as in the above embodiment
A similar effect can be achieved by providing .

In each of the above embodiments, depending on the application, only one auxiliary fluid introduction port 1'' (114a, 1/11) may be provided, or a plurality of inlet ports 14a, 14b may be provided on the left and right sides.

Further, the auxiliary fluid supply paths 2a and 2t+ can be provided with a throttle as necessary, thereby adjusting the spraying angle.

Of course, the auxiliary fluid supply source may not be shared with the main fluid supply source as in the above embodiment, but may be provided separately.

[Brief explanation of drawings]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a plan view of the base plate, FIG. 2 is a perspective view of the dispersion element with the cover plate cut away, and FIG. 3 is the operation of the dispersion element. !
ll1l explanatory diagram, Fig. 4 is a diagram showing the spraying area of the dispersing element, Fig. 5 is an overall configuration diagram showing an example of using the dispersing element in a vehicle window washer device, Fig. 6 is an electric circuit diagram of the control circuit, FIGS. 7 and 8 are plan views of a base plate showing other examples of auxiliary fluid inlets, and FIG. 9 is a plan view of a base plate showing an example in which the present invention is applied to a dispersion element having a horizontal structure. 1...Fluid element 1a...Base plate 1b...Cover plate 11...Nozzle 12...Ejection channels 12a, 12b, 12c, 12d, 12a------
-1 11 - ... Channel wall 13 ... Spraying opening 1/Ia, 14h ... Auxiliary fluid inlet 2a,
2b... Auxiliary fluid supply path 3a, 3b...
... Solenoid valve (control means) 4 ... Control circuit" = n - 〇 Wa No. 30 Box 3 No. 40 Section 5 Book 6 Diagram 121 ■ 1" -- No. 7 [ Tea 8 Diagram 2c12b 12 14b Sat LH=Tom

Claims (1)

[Claims] In a fluid dispersion element having a jet flow path that guides a jet flow ejected from a nozzle to a dispersion opening, and configured to periodically deflect and vibrate the jet flow to the left and right within the jet flow path, the right side of the jet flow path An auxiliary fluid inlet for introducing an auxiliary fluid at a predetermined pressure into the jetting flow path is opened on either or both left channel walls, and the auxiliary fluid supply path leading to the inlet is provided with an auxiliary fluid. A fluid distribution element comprising control means for controlling the supply and changing the deflection angle of the jet.