JPS6331621B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a jet flow regulator to be attached to a water faucet or similar sanitary equipment, in which a flow breaker with a flow breaker hole is disposed on the inflow side, The present invention relates to a type in which an air suction device and, subsequently, a jet regulating sheave are connected downstream in the flow direction. In some cases, a front sheave may be arranged on the inlet side in front of the flow breaker.

Jet flow regulators of this type are known and serve to entrain a gas, generally air, into a liquid exiting a tap or similar sanitary appliance in order to obtain a uniform jet. This type of jet flow regulator is used, for example, in washrooms,
Often used for water faucets in kitchens, etc. However, known jet flow regulators have significant drawbacks. For example, it has good fracking performance, but is relatively noisy. Typically, this type of flow-breaking device has two or more hole plates arranged one behind the other, and at least some of the flow-breaking holes in the plurality of hole plates are arranged offset from each other. There is. Jet flow regulators with only one hole plate are also known which work well, but in this case a deflector or another element that obstructs the flow is arranged in the flow hole. As a result, the partial jets that have passed through the individual flow-breaking holes are once again significantly broken up or split. Furthermore, the “internal deflection” of the jet
There are also known flow breaker devices that perform this.
"Internal deflection" means, for example, that the fracture holes belonging to one hole plate are themselves partially offset from one another in the axial direction, which likewise results in a significant deflection of the jet ( See, for example, German Patent Application No. 1297053, German Patent Application No. 1448852 or German Utility Model No. 1950597).

Jet flow regulators are already known which generate relatively less noise than the previously mentioned known examples. The flow-breaking device of this jet regulator usually consists of one perforated plate. No additional obstructions, such as deflection elements such as baffles for the partial jets, are provided. Although this device has the advantages of low noise and simple structure, it has poor flow breaking performance. Attempts have been made to compensate for poor flow-breaking performance with a relatively large number of jet regulating sheaves. Therefore, in this known device, the flow-breaking device essentially consists of one perforated plate, and it is not uncommon for five or six jet regulating sheaves to be provided.

Regarding conventionally known devices, the following can be said. That is, if the flow-breaking ability is good, the number of jet flow regulating sheaves can be reduced. On the other hand, if the breaking flow capacity is good, the noise will be significantly louder. In addition, the following points should be noted regarding jet flow regulators. That is, the selection of the mesh width and wire diameter of the jet flow regulating sheave has a significant influence on the jet flow regulation. If the mesh width is coarse, a large number of sheaves must be used;
If the mesh width is dense, only a small number of sieves may be used. In particular, a good jet regulator should reduce the disadvantage of calc buildup on the jet regulating sheave.

SUMMARY OF THE INVENTION An object of the present invention is to provide a jet flow regulator that is low in noise and simple in structure and assembly.

The key point of the invention, which solves this problem, is that in the jet flow regulator mentioned at the outset, at least some of the flow-breaking holes are each partially designed as polygonal holes. With this configuration, the flow-breaking ability will be good and the flow noise will be slight.
Therefore, the number of jet flow regulating sheaves can be reduced or jet flow regulating sheaves with poor calc adhesion can be used, and the production of the jet flow regulator as a whole is simplified.

In one embodiment of the invention, the axial length of the polygonal hole is approximately 0.2 to 0.5 mm, preferably approximately 0.3 mm. With such a short jet guide, the partial jets are broken up or broken up particularly well, and the air entrainment is accordingly good without the generation of strong noise.

Next, the present invention will be specifically explained with reference to the illustrated embodiments.

The jet flow regulator, which is designated as a whole by 1, has a casing 2.
(Figures 1 and 2). Rubber rings 3 are arranged in front and behind each other when viewed in the flow direction shown by arrow pf1.
and a crimp ring 4 are provided. The front sheave 5 is crimped to the flow breaking device 6 by the crimping ring 4 . This flow breaking device 6 has a hole plate 7,
The perforated plate 7 is provided with a large number of flow-breaking holes 8.

An important feature of the invention is that at least some of the short sections of the fracture holes 8 are designed as polygonal holes 9. Advantageously, the flow cross section of the polygonal hole 9 is square or rectangular (see FIG. 3). The axial length l of the polygonal hole 9 (see FIGS. 4 and 7 to 9) is preferably between 0.2 and 0.5 mm. In a particularly advantageous embodiment, this length l is approximately 0.3
mm. When the length l of the polygonal hole 9 is short to this extent, the liquid jet and the gaseous medium such as air are mixed particularly well. If the partial jets are short and polygonally guided, the ratio of the jet surface area to the jet cross-sectional area is favorable for air intake. If the polygonal holes 9 are square, preferably square, the above-mentioned ratios will be even better and, moreover, clogging by solids contained in the fluid will be less likely to occur. Furthermore, there is less risk of calc deposits in the polygonal holes. length 1 is
When the diameter is 0.3 mm, the mixture of gaseous medium such as air into the partial jet is good. Inflow edge 18 of polygonal hole 9
Or, when 19 is sharply formed, flow-breaking properties are particularly good. If the polygonal holes 9 are provided on the inflow side of the perforated plate 7, the above-mentioned flow-breaking properties can be obtained particularly easily and well. In that case, the inlet edge 18 is designed to be particularly sharp. Particularly because of the short length l of the polygonal holes 9, particularly good flow-breaking properties are obtained. In a particularly advantageous embodiment, the perforated plate 7 consists of plastic. More advantageously, the entire flow-breaking device 6 is formed in one piece from plastic in the shape of a bowl, and the inlet side of the perforated plate 7 is formed flat (see FIG. 4). The construction of the flow-breaking device 6 from plastic is not only advantageous in producing particularly sharp inlet edges, but also makes the perforated plate 7 or the flow-breaking device 6 as a whole less susceptible to dirt. In short, plastic has poor adhesion to calc due to its chemical properties. Furthermore, plastics provide a very smooth flow cross section, which likewise prevents undesirable build-up. In short, if plastic is used, an extremely smooth polygonal hole 9 with no deviation in direction can be formed. As a result, the generation of loud noises and the risk of clogging are significantly avoided, and, moreover, very good flowability and air intake due to partial jets are achieved.

As can be clearly seen from the drawing, the thickness d of the perforated plate 7,
d' is significantly larger than the axial length l of the polygonal hole 9. This is also advantageous in terms of strength. If desired, the central region of the perforated plate 7 can be designed convexly with a relatively large thickness d', as shown in dashed lines in FIGS. 4 and 7. The ratio d/l of the general thickness d of the hole plate to the axial length l of the polygonal hole sections A, B is approximately 85/15 to 50/50. In a preferred embodiment, d/l is approximately 70/30. In the perforated plate 7 shown in FIG. 4, in order to improve the cooperation between the sharp inlet edge and the flat inlet side 20, a convex wall thickness range of the perforated plate 7 can be provided on the outflow side (fourth (See the dash-dotted line in the right half of the figure). The bowl-shaped flow disruption device 6 is provided with a support shoulder 10 by which it is supported on a support sleeve 12 . The flow-breaking device 6 together with the front sheave 5 is clamped between the support sleeve and the rubber ring 3 and the crimping ring 4.

From the viewpoint of obtaining good flowability, the thickness d or d' of the perforated plate is unnecessary and even disadvantageous because the length l of the polygonal hole 9 is short.
This thickness d, d' of the perforated plate 7 is necessary for reasons of strength, especially if the flow-breaking device is made of plastic. In order to avoid undesirable lengths of lateral guidance in the flow direction due to the partial jets, according to the invention the cross section of the remaining section C or D of the rupture hole 8 is compared to the cross section of the polygonal hole 9. (especially in Figures 3 and 4)
(See Figures 7 to 9). In this case, the sections C and D are formed as inflow holes 11a or outflow holes 11, which are formed coaxially with respect to the polygonal hole 9 and have a circular cross section (FIG. 3, (See Figures 8 and 9). Besides the advantage that the inlet edge 18 can be made particularly well and sharply on the inlet side 20 for the reasons already mentioned, the outlet hole 11 according to FIGS. Accumulation of substances is less likely to occur, and therefore the cross section of the polygonal hole 9 does not become narrower. If the outlet opening 11 has a sufficiently large cross section, no adverse effects on the partial jets occur.

Although the embodiments shown in FIGS. 1-4 and 8 are relatively advantageous, the embodiments shown in FIGS. 5-7 are also possible. It is effective if the cross section of the polygonal hole 9 is larger than the mesh width of the front sheave 5. This significantly avoids clogging of the polygonal hole 9.

As can be seen in FIGS. 1, 2, 5 and 6, the jet regulator 1 is divided into three sections. The section where the flow breaker 6 is present is indicated by X, and the air suction section following this is indicated by XI. Inside the casing 2, an air gap 14 exists between the casing 2 and the support sleeve 12. A cut-out air slit 15 is provided in the outer wall of the support sleeve. The air thereby reaches the air intake section XI through the air gap 14 and the air slit 15. Following this air intake section XI (behind it in the flow direction) is a jet flow regulating section XII. In the embodiment shown in FIG. 1, only three coarse adjustment sheaves 16 are provided below the air slot 15 in this jet adjustment section XII. In the embodiment shown in FIG.
Only one fine adjustment sheave 17 is provided. According to the invention, approximately three sheaves are sufficient for a good breaking effect, although four or two sheaves may optionally be provided. In an advantageous embodiment, only three adjusting sheaves 16, preferably three coarse adjusting sheaves 16, are provided. Spacing between adjusting sheaves a
It is effective that the spacing is approximately 1.5 mm, and especially in the case of the coarse adjustment sheave 16, the larger the spacing a, the less the risk of clogging.

FIG. 5 shows a highly advantageous embodiment in connection with the arrangement of the sheaves. In this case, three sheaves 16,1
7 have different mesh widths. A coarse adjustment sieve 16 having a relatively large mesh width is arranged on the outflow side. Clogging and calc deposits are minimal in the coarse regulating sheave 16, so that one or possibly two coarse regulating sheaves 16 can be arranged on the outlet side. Due to the good breaking effect of the polygonal holes 9, which has already been explained in detail, this arrangement allows good jet flow regulation.

As can be clearly seen in FIG. 2, the flow-breaking device 6 has a support 21 for the front sheave 5, which can be easily manufactured without additional costs in a flow-breaking device made of plastic, for example. All internal parts of the jet regulator 1 are then simply fixed in the casing 2 by means of the rubber ring 3 and the crimp ring 4.

A comparatively small number of regulating sheaves 16 or 17 are required in the jet regulator according to the invention.

In particular, the jet flow regulator 1 according to the invention has only one perforation plate 7 with through-flow breaking holes 8 without deflecting surfaces. The jet flow regulator according to the invention thus has the advantages of various known jet flow regulators, but without their disadvantages.

The word "coarse" of the coarse adjustment sheave 16 here refers to a mesh width W that is approximately the same as the mesh width of the front sheave 5, and the "fine" word of the fine adjustment sheave refers to a mesh width that is approximately half the mesh width of the front sheave 5. Show that. Generally, the mesh width W of the fine adjustment sheave 17 is approximately 0.28 mm, and the mesh width W of the coarse adjustment sheave 16 is approximately 0.5 mm.

FIG. 10 shows a particularly advantageous embodiment. In this case, the outer peripheral area of the perforated plate 7 made of plastic is made slightly thicker than the central area. Furthermore, since the downstream side is formed as a conically recessed lower surface, a thicker outer circumferential portion is advantageously formed. This reduces the undesirably large deformations caused by the different thicknesses d, d' shown in FIG. 4, and also preserves some plasticity of the perforated plate 7, especially in the case of plastic. . This plasticity advantageously reduces deflection. On the other hand, if the deflection is too large, the rupture hole 8
This is disadvantageous, since the direction of the jet changes undesirably significantly. The perforated plate 7 shown in FIG. 10 is therefore a particularly advantageous embodiment of the invention, in which the desired slight bending deformations occur when loaded by hydraulic forces, but no undesirably large bending deformations occur. do not have.

In the embodiment according to FIG. 10, the adjustment sheave 16, 17 area is also particularly advantageously designed. In this case, two fine adjustment sheaves 17 are arranged below the perforated plate 7 in the flow direction, and then two coarse adjustment sheaves 16 are arranged below them. The mesh width W of the fine adjustment sheave 17 is approximately 0.28 mm, and the mesh width W of the coarse adjustment sheave 16 is approximately 0.5 mm. According to experiments, 2
This configuration with one fine adjustment sheave 17 and two coarse adjustment sheaves 16 allows the present jet flow regulator 1 to be used in a very wide range of applications. These four adjusting sheaves 16 and 17 are considered as one set,
Can be installed on all jet flow regulators of the same size. Regardless of the water throughput and water pressure, it is only necessary to provide the same type of regulating sieve set, which simplifies production and storage. The possibly slightly higher cost of one regulating sheave is of no significance compared to the unitary construction of the entire regulating sheave or of the jet regulator.

The invention is not limited to the illustrated embodiment. For example, the cross section of the polygonal hole 9 may be smaller than in the illustrated embodiment, or may be approximately circular. Even in that case, the axial length l of the polygonal hole 9 is approximately 0.3 mm, and the inlet edge is similarly sharp. By having such a short flow-breaking hole, not only the flow-breaking properties are improved, but also the manufacturing tool of the flow-breaking device can be manufactured at a relatively low cost. The embodiment in which the flow-breaking holes are designed as polygonal holes 9 is a preferred embodiment. This is because, as already mentioned, this increases the surface area of the jet and thus makes air intake more effective.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of the first embodiment of the present invention, and the second
The figure is a longitudinal sectional view of the second embodiment of the present invention, FIG. 3 is a bottom view of the flow breaker based on the first embodiment, FIG. 4 is a sectional view taken along the - line in FIG. is a vertical sectional view of the third embodiment of the present invention, and FIG. 6 is a longitudinal sectional view of the fourth embodiment of the present invention.
FIG. 7 is a cross-sectional view of the flow breaker of the embodiment shown in FIGS. 5 and 6, FIG. 8 is an enlarged view of the area indicated by circle E2 in FIG. 4, and FIG. The figure is an enlarged view of the area indicated by the circle E1 in Fig. 7, Fig. 10 is a longitudinal sectional view of the fifth embodiment of the present invention, and Fig. 11 is an enlarged schematic view of the mesh of the sheave used in the device based on the present invention. It is an illustration. 1...Jet flow regulator, 2...Casing, 3...
Rubber ring, 4... Crimping ring, 5... Front sheave, 6... Breaker device, 7... Hole plate, 8... Breaker hole, 9... Polygonal hole, 10... Support shoulder, 11... Outlet, 11a...Inflow hole, 12...Support sleeve, 13...Brim, 14...Air gap, 15...
Air slit, 16... Coarse adjustment sheave, 17...
Fine adjustment sheave, 18, 19...sharp inlet edge,
20... Inflow side, 21... Support part, 22... Bottom surface of hole plate.

Claims (1)

[Scope of Claims] 1. A jet flow regulator to be attached to a water faucet or similar sanitary equipment, which includes a flow breaker equipped with flow breakers on the inlet side, and a flow direction In the type in which an air suction device and then a jet flow regulating sheave are connected downstream, each section A, B of at least some of the flow-breaking holes 8 is formed as a polygonal hole 9. Jet flow regulator for installation on water taps or similar sanitary equipment. 2 The axial length of the polygonal hole sections A and B is approximately
0.2 to 0.5 mm, and the cross section of the polygonal hole 9 is not larger than the cross section of the remaining sections C and D of the associated rupture hole. vessel. 3. The polygonal hole 9 has sharp inflow edges 18, 19, and the polygonal hole section A is connected to the flow-breaking device 6.
The jet flow regulator according to claim 1, which is provided on the inflow side of the jet flow regulator. 4. The jet flow regulator according to claim 3, wherein at least the perforated plate 7 of the flow breaking device 6 is made of plastic and is integrally molded into a bowl shape. 5. A front sheave is provided, the cross section of the polygonal hole 9 is at least substantially square, and the diameter of the polygonal hole 6 is larger than the mesh width of the front sheave 5. jet regulator. 6 Polygonal hole division A for the thickness d of the hole plate 7,
The ratio of the axial length l of B is approximately 15/85 to 50/
50. The jet flow regulator according to claim 5, wherein the jet flow regulator is 50. 7. The rupture hole sections C and D, which have a smaller cross section than the cross section of the polygonal hole sections A and B and are left in front or behind the same sections A and B, are at least approximately similar to the polygonal hole 9. 7. The jet regulator as claimed in claim 6, which is coaxially designed and preferably has a circular cross section. 8 Three sheaves 16,1 as jet flow regulating sheaves
7. A jet flow regulator according to claim 7, wherein the three sheaves are made of coarse sheaves 16 and are arranged one behind the other with a mutual spacing of approximately 1.5 mm. 9 Three sheaves 16; 17 having different mesh widths are provided as jet flow regulating sheaves, and one or more sheaves 1 having a relatively large mesh width are provided.
6 is arranged on the outflow side, and the sheave 16,
8. A jet flow conditioner as claimed in claim 7, wherein the mutual spacing of 17 is approximately 1.5 mm. 10 Two fine-mesh jet flow adjustment sheaves 17
10. The jet flow regulator according to claim 9, further comprising: a jet flow regulating sheave 16 having a coarse mesh and two jet flow regulating sheaves 16 having a coarse mesh connected thereto. 11 The flow breaking device 6 is a support part 2 for the front sheave 5
1, and the flow-breaking device 6 and the front sheave 5 are fixedly supported in the casing 2 via this support 21 by a crimp ring 4 or a similar fastening member. 11. The jet flow regulator according to item 10. 12. Claim in which at least some of the respective short sections A, B of the flow-breaking holes 8 are designed as at least approximately circular guide holes of approximately 0.3 mm, which guide holes have sharp inlet edges 18 or 19. The jet flow regulator according to item 11. 13 The thickness d of the perforated plate 7 changes from its central region towards the edges, and the perforated plate has a relatively greater thickness in its central region on the side opposite to the polygonal holes 9.
13. The jet flow regulator according to claim 12, which is formed at d'. 14. The jet flow regulator according to claim 12, wherein the perforated plate 7 is thick at the edge and has a substantially conical lower surface 22 on the outflow side.