JPH02268763A - Apparatus for controlling flow direction - Google Patents

Abstract

PURPOSE:To control a wide angle deflection of a fluid blown from a nozzle by providing the first nozzle blowing a fluid, a restricting space with a crosssectional area larger than that of the first nozzle and the second nozzle with a rectangular aperture smaller than that of the restricting space and making the second nozzle movable in parallel and rotationally in a face perpendicular to the fluid. CONSTITUTION:A restricting space 11 has a diameter B larger than the diameter A of the first nozzle 7 and an aperture 13 of the second nozzle 12 is formed into a rectangular shape with a width of W and a length of L and the length of L is smaller than the diameter B of the restricting space 11. A magnetic body 15 is fixed on a fixing face 14 of the second nozzle 12 and magnets 16 and 17 are fixed on the second nozzle 12. A flow introduced from a water inlet 6 is narrowed at an aperture 8 of the first nozzle 7 to exhibit a high speed. The flow is mixed with air sucked from an inlet 9 and is entered in a diffuser 10 and is blown out from the aperture 13 of the second nozzle 12. When the second nozzle 12 is moved upward, the flow passing through the aperture 13 of the second nozzle 12 is remarkably deflected upward. In addition, the deflecting motion can be performed by rotating the second nozzle 12 in the arbitrary direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow direction control device for controlling a fluid blown out from a nozzle over a wide angle.

2. Description of the Related Art An example of a conventional flow direction control device of this type is shown in FIG. 7, which deflects and blows out a bubble-containing jet from a jet path. In the figure, 1 is the water inlet, 2
3 is a nozzle for restricting the flow, 3 is an air population, and 4 is a deflection member for deflecting the flow. In this configuration, the flow that enters from 1 is throttled by nozzle 2 and becomes high-speed, and the negative pressure generated thereby causes air to be sucked from port 3.

The flow mixed with air enters the deflection member 4 whose outlet portion is circular. The deflection member 4 was configured to be rotatable in any direction as shown in the figure, and the circular jet flow mixed with air was deflected toward the set direction of the deflection member 4.

Problems to be Solved by the Invention However, with such a configuration, there is a problem that the deflecting member 4 protrudes into the bathtub and becomes a hindrance during bathing. Further, in such a configuration, the flow is blown out as a circular jet, resulting in a spot jet, and the configuration is not such that a wide jet is blown out.

Means for Solving Eight Problems In the present invention, in order to solve the above-mentioned problems, a first nozzle for blowing out a flow is provided downstream of the first nozzle, and the opening of the first nozzle is lower than the opening of the first nozzle. It has a restraint space having a large cross-sectional area, and a second nozzle provided downstream of the restraint space and having a rectangular opening having a smaller cross-sectional area than the restraint space. It is configured to be movable in parallel and rotationally in a plane approximately perpendicular to the .

Effect The present invention has the above-described configuration, and a restraining space wider than the opening of the second nozzle is provided upstream of the second nozzle.
The rectangular jet flow is deflected by utilizing the asymmetry of the flow within the restricted space caused by the parallel movement of the nozzle. Further, by rotating this second nozzle, deflection in an arbitrary direction is also performed.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, 5 is a flow direction control device.

6 is the water inlet, 7 is the first nozzle that throttles the flow, 8 is the diameter A
It is a circular opening having a diameter. 9 is an air population, and 10 is a diffuser for restoring pressure. 11 is the first
It is a cylindrical restricted space having a diameter B larger than the diameter A of the nozzle. Reference numeral 12 denotes a flat second nozzle, and its opening 13 is formed in a rectangular shape with a width W1 and a length smaller than the diameter B of the restraint space 11. .

14 is a surface on which the second nozzle 12 is attached, and a magnetic body 15 having a circular ta is attached thereto. A circular magnet 16,17 is attached to the second nozzle 12. When these magnets 16 and 17 are attracted to the magnetic body 15 by magnetic force,
The second nozzle 12 is mounted on a surface 14 and is held in such a manner that it can be translated and rotated. The annular magnetic body 15 has a size that corresponds to the range in which the circular magnets 16 and 17 attached to it move as the second nozzle 12 moves.

Next, the operation will be explained.

FIG. 3 shows a case where the center of the restricted space 11 and the center of the opening 13 of the second nozzle 12 are on the same axis. At this time, the flow entering from the water outlet 6 is throttled by the opening 8 of the first nozzle 7 and becomes high speed, and enters the diffuser 10 mixed with air sucked from the air outlet 9, where the pressure is Recovery is made.

This flow enters the restricted space 11, but in this case, since the opening 13 of the second nozzle 12 is located at the center of the restricted space 11, the flow within the restricted space 11 is not biased in any direction. , from the opening 13 of the second nozzle 12 in the straight direction.

Next, FIG. 4 shows a case where the second nozzle 12 is moved upward. In this case, since the center of the opening 13 of the second nozzle 12 is shifted upward from the center of the restricted space 11, the flow becomes asymmetric within the restricted space 11. That is, in this case, the influence of the flow Fb from below acts more strongly than the flow F6 from above, so the flow passing through the opening 13t' of the second nozzle 12 is largely deflected upward.

The degree of asymmetry in the restricted space 11 can be continuously changed by moving the second nozzle 12, so that the deflection in any direction from the straight forward direction in FIG. 8 to the upward deflection in FIG. becomes possible.

Further, the above deflection operation can be performed in any direction by rotating the second nozzle 12.

Next, a second embodiment will be described.

In FIGS. 5 and 6, the differences from the first embodiment are as follows.
Only the second nozzle 18. The rectangular opening 19 of the second nozzle 18 has curved guide walls 20a, 20b, 20c, 20d on the downstream side thereof, the flow path width of which gradually increases toward the downstream.

Next, the operation will be described.

The basic operation of deflecting the flow by moving the second nozzle is as follows:
This is the same as the first embodiment, but in this case, the deflection in the long side direction of the rectangular opening is
The presence of 0b helps to further deflect the flow. Fifth
In the case shown in the figure, since the flow is deflected upward, the flow adheres to the guide wall 20a, resulting in a larger deflection than when there is no guide wall.

In this embodiment, the guide wall has a curved shape, but it may have a straight shape as long as it produces an adhesion effect.

In the above embodiments, the restricted space has a circular cross section, but the restricted space may have a cross section larger than the opening of the second nozzle.
That is, any shape other than circular may be used as long as the shape causes asymmetry of flow within the restricted space.

Further, in this embodiment, a mixed flow of water and air is shown as the operating fluid, but the same operation occurs even when only water, only air, or a fluid such as oil is used.

Further, as a holding structure for the second nozzle, a magnet is attached to the second nozzle, and a magnetic material is disposed on the surface for attaching the nozzle, but these may be reversed.

Effects of the Invention (1) In the present invention, since the flow is deflected by moving the planar nozzle, the outlet can be constructed in a flat state.

(2) Operation is easy because the flow direction is changed by moving and rotating the nozzle on a plane.

(3) Since a rectangular nozzle is used,
A wide jet can be obtained.

(4) By providing a guide wall on the downstream side of the nozzle, a wider angle of deflection can be achieved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a flow direction control device showing a first embodiment of the present invention, FIG. 2 is a front view of the same device, FIG. 3 is a cross-sectional view showing the operating state of the device, and FIG. Fig. 3 is a sectional view showing different operating states, Fig. 5 is a sectional view of a flow direction control device showing a second embodiment of the present invention, Fig. 6 is a front view of the same device, and Fig. 7 is a conventional flow direction control device. It is a sectional view of a direction control device. 1... Flow direction control device, 7... First nozzle, 8
... Opening, 11... Restricted space, 12... Second nozzle, 13... Rectangular opening, 20a, 20b, 2
0c/20d...Guidance wall. Name of agent: Patent attorney Shigetaka Awano 1 person 111111m

Claims (2)

[Claims] (1) A first nozzle that blows out a flow, a restricted space provided downstream of the first nozzle and having a larger cross-sectional area than the opening of the first nozzle, and a restricted space provided downstream of the restricted space. and a second nozzle having a rectangular opening having a smaller cross-sectional area than the restricted space, and the second nozzle is configured to be movable in parallel and rotationally in a plane substantially perpendicular to the flow. Flow direction control device. (2) The flow direction control device according to claim 1, further comprising a guide wall having a shape in which the width of the flow path gradually increases on the downstream side of the second nozzle.