JPH0720564B2 - Fluid oscillation element nozzle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a nozzle using a fluid oscillation element used, for example, in a sanitary washing toilet seat, and more specifically, to a left and right oscillation without impairing pressure loss and compactness. The present invention relates to a technique for avoiding the occurrence of bias in and performing stable oscillation.

[Prior Art] Conventionally, for example, in a sanitary washing toilet seat, a bathing shower nozzle, a sprinkler, and the like, a nozzle using a fluid oscillation element in which jetted water oscillates left and right by using a pressure difference due to a water flow is used. Such a fluid oscillating element has no moving parts, has a simple structure, does not require maintenance, and can be manufactured at low cost. Has the characteristic of improving. As a structure of a nozzle using a fluid oscillation element, there are a structure having a feedback channel and a structure using a vortex chamber.

As shown in FIG. 3, the cleaning water rises from the main nozzle 5 to the decompression chamber 34 communicating with the atmosphere through the supply port 13 and the introduction water passage 6a formed in the lower part of the nozzle body. When passing through the central water passage 9 of the decompression chamber 34, the jet flow ejected from the main nozzle 5 adheres to either the left or right wall surface due to the Coanda effect. Since the feedback water channels 10 are formed on both sides of the central water channel 9, the water jetted from the main nozzle 5 causes a pressure difference between the left and right sides of the inlet of the central water channel 9, and the water jets are applied to the left and right wall surfaces of the central water channel 9. Pass through while alternately attaching. Therefore, when the jet water is jetted from the jet port 14, the jet water automatically jets while oscillating right and left.

On the other hand, even in the case of a fluid element using a vortex chamber as shown in JP-A-63-194039 (the details of the principle of oscillation are omitted here), the cleaning water discharged from the main nozzle is Jet water is jetted while vortices are alternately formed on the left and right sides and automatically oscillate from the jet port 14. FIG. 4 shows a cross-sectional structural view taken along the line XX of FIG.

[Problems to be Solved by the Invention] However, in any of the two conventional examples, the supply port 13
Is substantially perpendicular to the injection port 14, the wash water that has passed through the introduction water passage 6a enters the main nozzle 5 from the direction perpendicular to it. Therefore, when the cleaning water passes through the main nozzle 5, the deflection of the flow from the supply port 13 cannot be sufficiently corrected and enters the decompression chamber 34, and the left and right pressure balance has a tendency to be biased toward the ejection from the ejection port 14. Tended to occur. On the other hand, in order to eliminate this habit, the main nozzle 5
There is also a method of reducing the cross-sectional area of or increasing the cross-sectional area, but there are problems that the pressure loss becomes large and the shape becomes vertically long, which impedes compactness.

The present invention has been made in view of such problems,
The purpose is to achieve a cleaning effect that stably oscillates in a fluid oscillation element without impairing pressure loss and compactness, and without causing the flow rate distribution of the jet injected from the outlet to be biased to the left or right. To provide a high fluid oscillation element nozzle.

[Means for Solving the Problems] A fluid oscillating element nozzle of the present invention is a fluid oscillating element nozzle that oscillates a fluid supplied from a supply port 13 from a jet port 14 to the left and right and jets the fluid. 13 to the main nozzle 5
To communicate with the main nozzle 5 at a substantially right angle and in a T-shape, and to form a step 7 with the main nozzle 5 without forming the introduction water channel 6 in the same plane. It is characterized in that the cross-sectional area of the introduction water channel 6 is made larger than the cross-sectional area of the main nozzle 5.

[Operation] As described above, the introduction water passage 6 for supplying the fluid from the supply port 13 to the main nozzle 5 is connected to the main nozzle 5 at a right angle and in a T-shape, and is introduced into the main nozzle 5. By forming the step 7 without forming the water channel 6 in the same plane and making the cross-sectional area of the introduction water channel 6 larger than the cross-sectional area of the main nozzle 5, the wash water flowing in from the supply port 13 is at the lower part of the main nozzle 5. At the portion of the introduction water channel 6 formed in a T shape with respect to the main nozzle 5, that is, at the lower portion of the main nozzle 5, the speed is reduced, and when entering the main nozzle 5 from the introduction water channel 6, it is formed at this portion. When overcoming the step 7, it overcames the weir and corrects the inflow tendency from the washing water supply port 13 to the main nozzle 5, that is, the habit of washing water, and thus the waterway pattern for oscillation after the main nozzle 5 Regardless of what type Even in the inflow oscillating element nozzle, the left and right pressure balances are alternately and stably generated in the deceleration chamber of the water channel pattern for oscillation, and there is no bias in oscillation, and the oscillation of the jet water is uniform. Is.

Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the fluid oscillation element nozzle A
Has a laminated structure of a nozzle body 1, packing 2, and nozzle lid 3, and a water supply pipe 4 is provided in the nozzle body 1. The nozzle body 1 and the nozzle lid 3 can be joined easily or at low cost by adhesion or ultrasonic welding. Water supply pipe 4
The washing water entering from the above through the supply port 13 enters the introduction water channel 6 below the main nozzle 5. The introduction water channel 6 is T with respect to the main nozzle 5.
The cross-sectional area of the main nozzle 5 is crossed by connecting the main nozzles 5 in a V-shape and forming a step 7 so that the depth of the main water nozzle 6 does not become flush with the main water nozzle 5. It is larger than the area. Therefore, the T-shaped buffer zone 8 allows the wash water flowing in from one side to have its uneven flow rectified and enters the main nozzle 5. A central water passage 9, a feedback water passage 10, and an air hole 11 are formed downstream of the main nozzle 5. The central water channel 9 is formed to have a wider water channel width than the main nozzle 5, and the pressure is reduced by being opened to the atmosphere at the injection port 14. The washing water discharged from the main nozzle 5 adheres to either the left or right wall surface of the central water passage 9 by the Coanda effect. If it adheres to the left side wall 9a of the central waterway 9, the injection water will block the inlet of the left feedback waterway 10a, and a part of the water will flow around the feedback waterway 10a. Becomes lower in pressure, and the adhesion moves to the right wall surface 9b of the central waterway 9. By repeating the switching operation in this manner, the cleaning water is stably ejected while oscillating from the ejection port 14.

[Effects of the Invention] In summary, according to the present invention, the introduction water passage for supplying the fluid from the supply port to the main nozzle is communicated at a right angle to the main nozzle in a T-shape, and the introduction water passage is connected to the main nozzle. Since the cross-sectional area of the introduction water channel is made larger than the cross-sectional area of the main nozzle by forming a step without making it in the same plane, the cleaning water flowing in from the supply port is below the main nozzle and The T-shaped introduction channel part, that is, the lower part of the main nozzle, is decelerated, and when entering the main nozzle from the introduction channel, when it gets over the step formed at this point, it gets over the weir. To correct the inflow tendency from the supply port of the cleaning water to the main nozzle, that is, the habit of the cleaning water, and therefore, regardless of the water channel pattern for oscillation after the main nozzle, no matter what type of fluid oscillation element nozzle However, the left and right pressure balances are alternately and stably generated in the deceleration chamber having the water passage pattern for oscillation, and there is an advantage that the oscillation of the injection water is uniform without any bias in the oscillation. Even if the main nozzle is not lengthened due to the buffering action of the introduction water passage communicating with the main nozzle in a T-shape, the main nozzle can be shortened, pressure loss in the main nozzle can be avoided, and it is not made compact. , There is an advantage that the appearance can be enhanced.

[Brief description of drawings]

1 (a) and 1 (b) are side views and cross-sectional views of an embodiment of the present invention, FIG. 2 is a front view showing a water channel of the same, and FIG. 3 is a front view showing a water channel of a conventional example. The drawing is a cross-sectional view taken along line XX of FIG. 3, in which 5 is a main nozzle, 6 is an introducing water channel, 7 is a step, 13 is a supply port, and 14 is an injection port.

Claims (1)

[Claims] 1. A fluid oscillating element nozzle for oscillating a fluid supplied from a supply port from the injection port to the left and right to eject the fluid.
The introduction water channel that supplies the fluid from the supply port to the main nozzle is connected at a right angle to the main nozzle in a T-shape, and the step is formed without forming the introduction water channel in the same plane with the main nozzle. The cross-sectional area of the introduction water channel is made larger than the cross-sectional area of the main nozzle.