JPS62251508A - Fluid vibrating-element - Google Patents

Abstract

PURPOSE:To unify the distribution of an injection flow, by making the opening ratio at the opening of a nozzle smaller than that at the middle of the nozzle. CONSTITUTION:A water-pouring-port 5 is arranged at the upper surface of a casing 2, while a circular, inflow-chamber 10 is arranged at the tip of the water-pouring-port 5. An inner flow passage 6 is formed at the tip of the inflow- chamber 10 via an inner nozzle part 11. In addition, the tip of an injection-port 7 whose sectional area is enlarged as the position becomes closer to the tip is open to the outside as the nozzle opening 3. A right-hand bypass passage 8 and a left-hand bypass passage 9 are formed at both sides of the inner flow passage 6, respectively. At both end parts of the nozzle opening 3 are installed thin, almost triangular control boards 12, so that the opening ratio (sectional area of the flow passage) at the opening of the nozzle becomes smaller than that at the middle of the nozzle. With this contrivance, with regard to the fluid from the nozzle opening 3, the injection flow is obstructed by the control boards 12 at both ends and consequently we cannot have a great flow. As a result, a part of the flow, which is obstructed as mentioned above, is forced to jet out of the middle part, thereby unifying the injection flow.

Description

[Detailed description of the invention] 【Technical field】

The present invention relates to a fluid oscillation element that ejects fluid while alternately transversely vibrating the ejection direction in a direction perpendicular to the ejection direction.

[Background technology]

Fluid oscillation element A that horizontally vibrates the jetting direction of the upstream fluid
The mechanism shown in Fig. 4(a) and (b) of ' is known,
For example, this is published in Japanese Patent Publication No. 51-22207 and Japanese Patent Publication No. 51-22207.
As disclosed in Publication No. 8-110731, etc.
It has been put to practical use in water discharge nozzles for showers and hot water cleaning equipment. However, the fluid oscillation element A' shown in No. 2 does not function as the fluid oscillation mechanism 1' in a steady flow state before and after switching the injection direction.
Since the flow is in close contact with the side wall 4' of the flow path forming the flow path, and the switching operation is quick, most of the jet flow that repeatedly oscillates is directed to the nozzle port 3, as shown in Fig. 4(b). There is a flow at both ends of the jet, and there is almost no jet flow in the center. For this reason, when the fluid oscillation element A' is used for purposes such as cleaning, there is a problem in that the area facing the center of the nozzle opening 3 is insufficiently cleaned.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned technical background, and its purpose is to make uniform the distribution of the jet stream ejected from the nozzle opening.

[Disclosure of the invention]

The fluid oscillation element of the present invention has a fluid oscillation mechanism 1 formed inside which vibrates in a direction perpendicular to the jetting direction of the fluid by the self-action of the fluid. It is characterized in that the aperture ratio is smaller than the aperture ratio of the central portion. Therefore, since the aperture ratio at both ends of the nozzle opening 3 is reduced,
The jet stream discharged from both ends of the nozzle opening 3 decreases, and the jet stream from the center of the nozzle row 3 increases accordingly, so that the distribution of the jet stream jetted from the nozzle opening 3 becomes uniform. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The fluid oscillation mechanism 1 inside the fluid oscillation element A will be explained with reference to FIG. A water inlet 5 for pressurizing fluid is provided on the upper surface of the casing 2, a circular inlet chamber 10 is provided at the tip of the water inlet 5, and an inner nozzle portion 11 is provided at the tip of the inlet chamber 10. A spindle-shaped internal flow path 6 is formed through the inner flow path 6, and a trumpet-shaped injection lower is provided at the end of the internal flow path 6. It's open. *In addition, a right bypass passage 8 and a left bypass passage 9 are provided on both sides of the internal passage 6, respectively (here, left and right are This is only for convenience to make the explanation easier to understand, and it refers to the left and right directions as seen in FIG. 1(b).
The base j1 part 8a and the base end 9a of the left bypass passage 9 open between the inner nozzle part 11 and the inner flow passage 6, and the distal end 8b of the right bypass passage 8 and the distal end 9b of the left bypass passage 9 open. is open on the side of the injection lower. In addition, thin, substantially triangular control plates 12 are provided at both ends of the nozzle port 3 to make the opening thickness narrower than that at the center, so that the aperture ratio (flow passage cross-sectional area) at both ends is lower than the aperture ratio at the center. It is also small. As shown in FIG. 2(a), the water discharged from the inner nozzle part 11 to the inner channel 6 now adheres to the left side wall 4 of the inner channel 6 due to the wall surface adhesion effect and flows. Furthermore, the right III of the injection lower! It is assumed that the liquid flows along t4 and is discharged from the nozzle port 3 in the right direction. At this time, due to the effector effect of the fluid, the base end 8&, the distal end 8b of the right bypass passage 8 and the base end 9a of the left bypass passage 9 become negative pressure, and the fluid in the right bypass passage 8 and the left bypass passage 9 becomes negative pressure. is being suctioned, and in the right bypass passage 8, the base layer 8a and the tip! Since the negative pressure is balanced with s8b, no strong flow occurs, but in the left bypass path 9, only the base end 9a becomes negative pressure, and the fluid in the left bypass path 9 is strongly drawn toward the base end 9a. As a result, fluid flows from left to right at the base end of the internal flow path 6, and the fluid flowing along the left III wall 4 of the internal flow path 6 is subjected to a force in the right direction. At the same time, since the fluid is flowing away from the distal end 9b of the left bypass passage 9, air is drawn into the left bypass passage 9 from here, and this air flows from the proximal end 9a of the left bypass passage 9 into the internal flow passage 9. When the fluid flows out to the left side wall 4, the air removes the fluid adhering to the I wall 4, and as a result, the fluid changes its flow path as shown in FIG. It flows from the side wall 4 of the injection lower along the left side wall 4 of the injection lower, and is discharged from the nozzle opening 3 toward the left. By repeating the above action, the fluid oscillation element A alternately changes the direction of water ejected from the nozzle port 3 at a constant period.
It is discharged while vibrating the WA. Moreover, when the fluid is injected from the nozzle port 3, the jet stream is blocked by the control plate 12 at both ends and does not flow sufficiently, and the amount that is difficult to flow from both ends is ejected from the center.
As a result, the jet stream is uniformly ejected from the nozzle opening 3. Incidentally, if the thickness of the control plate 12 is gradually made thinner, the jet flow at both ends becomes stronger, and conversely, if the thickness of the control plate 12 is gradually made thicker, the jet flow becomes stronger at the center part, and the jet flow becomes stronger. Therefore, by adjusting the thickness of this control plate 12, a uniform jet flow can be obtained over the entire 7X Rulo 3, or the strength of the jet flow at both ends and the center can be controlled. [Effects of the Invention] As described above, the present invention has the aperture ratio at both ends of the nozzle port of the fluid oscillation element smaller than the aperture ratio at the center.
This has the advantage that the jet flow ejected from both ends of the nozzle port is reduced, and the jet flow from the center of the nozzle is correspondingly increased, making it possible to make the distribution of the jet flow ejected from the nozzle port uniform. Therefore, even when this is used for cleaning purposes such as showers, the central portion can be sufficiently cleaned.

[Brief explanation of drawings]

FIGS. 1(a), (b), and (c) are a front view, a plan sectional view, and a vertical sectional view showing one embodiment of the present invention, fs2 FIGS. (a) and (b) are operation explanatory diagrams of the same, and FIG. 4(1) and 4(b) are a front view and a plan sectional view of a conventional example, where 1 is a fluid oscillation mechanism and 3 is an /X Rulo. Agent Patent Attorney Ishi 1) Long Shichiza) 4th No. 3L (b) Procedural amendment (spontaneous) May 29, 1985 1986 patent Jallf 59525692, name of invention Fluid oscillation device 3.11 IIl person who corrects Relationship to the incident Patent applicant address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (58
3) Matsushita Electric Works Co., Ltd. Representative: Sada Fujii Inu 4, agent postal code: 530 1) The scope of claims in the specification of this application will be corrected as follows. (1) In a fluid oscillation element that has a fluid oscillation mechanism formed inside that vibrates the fluid in a direction perpendicular to the fluid jetting direction by the self-action of the fluid, the aperture ratio of both ends of the nozzle opening that jets the fluid is set to the center. 2) "Side wall 4'" on page 2, line 5 of the same page.
Delete [Side wall 4', 4"J will be inserted. 3) Delete 1 in the 20th line of the same page in the perpendicular direction".
We will insert "fluid in the direction perpendicular to". 4) Figure 4(a)(1)) of the attached drawings is attached to attached Figure 4(a)
) (b) will be corrected.

Claims (1)

[Claims] (1) In a fluid oscillation element in which a fluid oscillation mechanism that vibrates in a direction perpendicular to the jetting direction of the fluid due to the self-action of the fluid, the aperture ratio of both ends of the nozzle opening that jets the fluid is set to the center. A fluid oscillation element with an aperture ratio smaller than that of .