JP2014080774A - Water supply restriction nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new water supply restriction nozzle having small deviation of the force of discharged water and providing a user with very sufficient use feeling.SOLUTION: A water supply restriction nozzle 1 is disposed on a water supply port 10 and discharges water introduced from the water supply port 10 into a nozzle body 2 in such a state that water is fragmented by a plurality of discharge holes 33 formed in a nozzle plate 3 while limiting an introduction amount of water by a throttle member 4. The water supply restriction nozzle 1 has a flow regulation plate 5 in which a plurality of through-holes 53 having a constant diameter Φ are formed at a position on a primary side of the nozzle plate 3 and also on a secondary side of the throttle member 4.

Description

  The present invention relates to a water supply regulation nozzle that is provided in a water supply port and discharges the water supplied from the water supply port in a subdivided state.

  Conventionally, it is installed in a water supply port that supplies water such as a universal water tap, a mixing tap, or an automatic water tap, and the water supplied from the water supply port is subdivided into showers while limiting the amount of water used. There is used a water supply regulating nozzle that can be discharged in a state of being allowed to improve the usability of water hitting the skin surface.

  As this type of water supply regulating nozzle, there are a throttle member that limits the amount of water supplied from the water supply port and a nozzle member in which a plurality of water discharge holes are formed in a mounting casing that can be attached to the water supply port. Arrangement is common (for example, see Patent Documents 1 and 2 below).

JP 2011-256668 A JP 2011-256669 A

  The water supply restriction nozzles (water saving devices) disclosed in Patent Documents 1 and 2 restrict the introduction amount of water introduced into the casing from the water supply port by the throttle member, and then the nozzle. It is subdivided by a plurality of water discharge holes in the member, and is discharged in a shower shape. A considerable water-saving effect has been achieved by using the water supply regulation nozzle.

  By the way, in this type of water supply restriction nozzle, the water whose amount of introduction has been reduced by the throttle member is oriented according to the shape of the throttle member when flowing out of the throttle member.

  For example, in the water supply restriction nozzle 100 provided with the throttle member 40 having a structure in which the outlets 42 are arranged at four positions with a phase difference of 90 degrees as shown in FIG. The water whose introduction amount is reduced at the inflow port 41 flows out in four directions from each of the four outflow ports 42. Therefore, the water that has been subdivided by passing through the water supply restriction nozzle 100 is discharged while maintaining the momentum directed in all directions.

  Further, for example, as shown in FIG. 7B, in the water supply restriction nozzle 100 using the throttle member 40 in which the outflow port 42 has a dome shape, the water that has passed through the throttle member 40 is the nozzle. It will collide with the center of the member 30. Therefore, the water subdivided through the water supply restriction nozzle 100 has a stronger momentum of water discharged from the central portion.

  As described above, in the water that has passed through the water supply restriction nozzle 100, if the water force is partially biased, pain may be stimulated by a strong portion depending on the person.

  As a result of the study by the present inventors, the phenomenon in which the water force is biased is that the smaller the diameter of either the inlet 41 or the outlet 42 of the throttle member 40, or the thickness of the nozzle member 30 becomes. It has been confirmed that the thinner the film becomes, the more obvious it becomes.

  The present invention has been developed to solve the above technical problem, and is a novel nozzle for regulating water supply that gives a very good feeling to the user with little bias in the water flow of the discharged water. The purpose is to provide.

  In order to solve the technical problem, the water supply restriction nozzle according to the present invention is provided in a hollow nozzle body having both ends opened, and in the nozzle body or an opening end on a secondary side of the nozzle body. A nozzle plate, and a throttle member provided at a position on the primary side of the nozzle plate in the nozzle body, are attached to a water supply port, and are introduced into the nozzle body from the water supply port. A plurality of water discharges formed on the nozzle plate by passing the water from the primary side opening end to the secondary side opening end while restricting the amount of water introduced by the throttle member. A nozzle for controlling water supply that is discharged in a state of being subdivided by holes, and a rectifier having a plurality of through holes formed at a position on the primary side of the nozzle plate and on the secondary side of the throttle member Equipped with a board, The rectifying plate is made of a thin plate member having a thickness of 0.1 to 0.5 mm, and the relationship between the thickness T of the rectifying plate and the diameter Φ of the through hole is 0.8T ≦ Φ ≦ 1. 2T (hereinafter referred to as the nozzle of the present invention).

  In the nozzle of the present invention, a preferred embodiment is such that the distance between the nozzle plate and the rectifying plate is in the range of 0.1 to 2 mm.

  In the nozzle of the present invention, it is preferable that each of the through holes is arranged so as to draw a circle or a concentric circle on the current plate.

  In the nozzle of the present invention, it is preferable that each of the through holes is arranged so as to have a uniform distribution density in the rectifying plate.

  In the nozzle of the present invention, it is preferable that the ratio of the total area of the through holes to the rectifying plate is 1 to 9%.

  In the nozzle of the present invention, it is preferable that the rectifying plate is made of a metal thin plate member and the through hole is formed by chemical etching.

  In the nozzle of the present invention, the nozzle plate is made of a thin plate member having a thickness of 0.1 to 0.5 mm, and the relationship between the thickness t of the nozzle plate and the diameter φ of the through hole is 0. A mode in which 8t ≦ φ ≦ 1.2t is satisfied.

  In the nozzle of the present invention, it is preferable that the total number of the plurality of through holes formed in the current plate is larger than the total number of the water discharge holes formed in the nozzle plate.

  The water discharged through the nozzle of the present invention is less biased in water and gives a very good feeling to the user.

FIG. 1: is a perspective view which shows a mode that this invention nozzle which concerns on Embodiment 1 is attached to a water supply opening partly in a cross-sectional state. FIG. 2A is a perspective view showing a current plate in the nozzle of the present invention, and FIG. 2B is an enlarged cross-sectional view showing a portion where the through hole exists in the current plate. FIG. 3 is a process diagram showing a process of performing chemical etching. FIG. 4 is a schematic view showing a state in which through holes are formed by the etching solution. FIG. 5 is a cross-sectional view showing a state in which water supplied from the water supply port is discharged through the nozzle of the present invention. FIG. 6 is a perspective view showing a state in which the nozzle of the present invention according to Embodiment 2 is attached to a water supply port. 7 (a) and 7 (b) are cross-sectional views showing a use state of a conventional water supply restriction nozzle.

  Hereinafter, although an embodiment of the present invention is described based on a drawing, the present invention is not limited to this embodiment.

<Embodiment 1>
FIG. 1A shows an embodiment of the nozzle 1 of the present invention. The nozzle 1 of the present invention shown in FIG. 1A includes a nozzle body 2, a nozzle plate 3, a throttle member 4, and a rectifying plate 5.

  The nozzle body 2 is a stainless steel hollow cylindrical body having both ends (primary opening end 21 and secondary opening end 22) opened.

  On the inner wall surface near the opening end 21 on the primary side, a female screw portion 211 is provided. The female screw portion 211 has a nominal diameter that can be screwed into the male screw portion 101 provided on the outer peripheral surface of the front end of the water supply port 10. That is, the nozzle 1 of the present invention is configured to be provided in the water supply port 10 by screwing the female screw portion 21 and the male screw portion 101 together. In the present invention, the “primary side” means that the nozzle 1 of the present invention is located upstream of the flow of water supplied from the water supply port 10 when the nozzle 1 is installed in the water supply port 10. “Secondary side” means the downstream side of the flow of water supplied from the water supply port 10.

  A step 221 for reducing the inner diameter (D1) of the nozzle body 2 is provided on the inner peripheral surface near the opening end 22 on the secondary side, from the step 221 toward the periphery of the other opening end 22. Taper processing is applied to enlarge the inner diameter. On the periphery of the opening end 22 on the secondary side, notches 222 are provided at two locations with a phase difference of 180 degrees. The notch 222 is used as a part to which a dedicated tool is fitted when the nozzle 1 of the present invention is detached from the water supply port 10.

  The nozzle plate 3 is formed by processing a plastic material into a disk shape having a thickness of 5 mm having a diameter (D2) that is the same as or slightly smaller than the inner diameter (D1) of the nozzle body 2, and penetrates the front and back surfaces thereof. A plurality of water discharge holes (caliber: 1.0 mm) 33 are formed. The nozzle plate 3 is formed by an extrusion process, and the water discharge holes 33 are formed at the same time as the extrusion process. The water discharge holes 33 are arranged in a plurality of rows (two rows in the present embodiment) concentrically around the center of the disk-like nozzle plate.

  The throttle member 4 is made of plastic and has a funnel-like shape including an inlet 41 having a small diameter and an outlet 42 having a large diameter.

  The rectifying plate 5 is a thin plate-like member made of stainless steel processed into a disk shape having the same or slightly smaller diameter (D3) as the inner diameter (D1) of the nozzle body 2, and its front and back (primary side) A plurality of (68 in the present embodiment) through-holes 53 are formed through the surface 51 and the secondary surface 52).

  As shown in FIG. 2A, the through-holes 53 are arranged on a plurality of concentric circles (three rows in the present embodiment) with a constant interval (X) between adjacent through-holes 53. It arrange | positions so that a space | interval may become fixed. Further, as shown in FIG. 2B, the diameter Φ of the through hole 53 is within a range of 0.8T ≦ Φ ≦ 1.2T with respect to the thickness T of the rectifying plate 3 (in this embodiment, , T: 0.3 mm, Φ: 0.3 mm). The total area of the through-holes 53 that occupies the rectifying plate 5 is about 2.8%.

  The through hole 53 is formed by chemical etching. Chemical etching is a processing means performed by chemically corroding a metal member. In this embodiment, as shown in FIG. 3, a substrate pretreatment step (S1) and a resist coating step (S2). The through-holes 53 are formed in the thin plate member to be the rectifying plate 5 by performing the baking step (S3), the developing step (S4), the etching step (S5), and the resist stripping step (S6) in this order. did.

  More specifically, the substrate pretreatment step (S1) includes a surface-making step (S1-1) for smoothing the surface of the thin plate member to be the rectifying plate 5, and a degreasing step for cleaning the surface state. This is a step of adjusting the surface state of the thin plate member by executing (S1-2).

  The resist processing step (S2) is a step of applying a resist to the front and back surfaces of the thin plate member.

  In the baking step (S3), the resist applied to the front and back surfaces of the thin plate member is covered with a film in which the pattern of the through 53 is punched and exposed to ultraviolet light, whereby the through hole 53 is formed in the resist. This is a process of baking the pattern.

  The developing step (S4) is a step of removing the pattern of the through holes 53 baked in the baking step (S3).

  The etching step (S5) is a step of exposing the thin plate member to an etching solution and corroding a portion not protected by the resist. In the present embodiment, as shown in FIG. 4, a ferric chloride aqueous solution is used as an etching solution, and the thin plate member is conveyed into the processing chamber R by the belt conveyor B under a temperature condition of 52 to 53 ° C. Meanwhile, the etching process (S5) was performed by spraying the etching solution in the form of a shower toward the front and back of the thin plate member for about 20 to 30 minutes while circulating the etching solution with the pump P.

  The resist stripping step (S6) is a step of stripping the resist that protects the front and back surfaces of the thin plate member.

  The through-hole 53 formed by such means has a smooth peripheral edge of the hole and no bulge (burr) as compared with that formed by physical perforation such as punching, so that the metal thin plate-like member is uniform. It is optimal as a means for forming a fine pore.

  In the nozzle 1 of the present invention having the above-described configuration, the nozzle plate 3 is placed on the step 221 provided on the inner peripheral surface of the nozzle body 2 near the opening end 22 on the secondary side, and the nozzle plate 3 The flow straightening plate 5 is placed after the annular first packing 6 is placed thereon. Further, the throttle member 4 is disposed in the nozzle body 2 with the outlet 42 facing the primary surface 51 of the rectifying plate 5, and the throttle member 4 and the inner wall of the nozzle body 2 The second packing 7 is disposed in the space between the neck member 4 and the primary side opening end 21 of the nozzle body 2 in order to ensure water tightness. And this invention nozzle 1 is equipped in the said water supply port 10 in this state (refer FIG. 1).

  As shown in FIG. 5, when water supply is started after the nozzle 1 of the present invention is installed in the water supply port 10, the water introduced into the nozzle 1 of the present invention from the water supply port 10 is opened on the primary side of the nozzle body 2. The secondary side opening in a state of passing through the nozzle body 2 from the end 21 toward the secondary side opening end 22 and subdivided by a plurality of water discharge holes 33 formed in the partition plate portion 3. It is discharged from the end 22 side.

  More specifically, water introduced into the nozzle 1 of the present invention from the water supply port 10 collides with the flow straightening plate 5 after the amount of introduction is reduced by the throttle member 4 while passing through the nozzle body 2. To do. The water that has collided with the rectifying plate 5 passes through a through hole 53 formed in the rectifying plate 5 and is sequentially introduced into the chamber between the rectifying plate 5 and the nozzle plate 3. The water introduced into the chamber between the rectifying plate 5 and the nozzle plate 3 is subdivided by passing through the discharge holes 33 formed in the nozzle plate 3 and discharged in a shower shape.

  And the water discharged through the nozzle 1 of the present invention is less biased in water force and gives a very good feeling to the user.

  Regarding the water discharged through the nozzle 1 of the present invention, there is no bias in the water force, and the mechanism for the phenomenon that gives a good feeling of use has not been clarified at the present time. However, for the current plate 5 arranged in the nozzle body 2, a thin plate member having a thickness of 0.1 to 0.5 mm is used, and the diameter Φ of the through hole 53 formed in the current plate 5 is It has been confirmed that such a phenomenon occurs when the thickness T of the current plate 5 is within a range of 0.8T ≦ Φ ≦ 1.2T (see Table 1 below).

  Further, as shown in Table 1 below, even when the thickness T of the current plate 5 is in the range of 0.1 to 0.5 mm, the diameter Φ of the water discharge hole is 0.8T ≦ It has also been confirmed that such a phenomenon cannot occur unless it is within the range of Φ ≦ 1.2T.

  The thickness T of the current plate 5 is in the range of 0.1 to 0.5 mm, and the diameter Φ of the through hole 53 is within the range of 0.8T ≦ Φ ≦ 1.2T in relation to T. In this case, it has also been confirmed that the water that has passed through the through-hole 53 is discharged in the form of fine water droplets that can be said to be mist-like. This is because the water supplied from the water supply port 10 is pushed into the through-hole 53 which is a very small pore while being pressed and does not reach a steady state while passing through the through-hole 53. It is considered that the pressure is released by being pushed out from the through hole 53.

  The water introduced into the chamber between the flow straightening plate 5 and the nozzle plate 3 as a row of fine water droplets is different from continuous water streaks discharged through simple pores. Almost disappeared. This is considered to be the reason why the water discharged through the nozzle 1 of the present invention is less biased.

  By the way, in the present invention, a thin plate-like member having a thickness of 0.1 to 0.5 mm is used for the rectifying plate 5 arranged in the nozzle body 2, but the physical strength that can withstand the water pressure during water supply. It is preferable to use a material that is as thick as possible from the viewpoint of ensuring the thickness. On the other hand, it is preferable to use a material that is as thin as possible from the viewpoint of improving the rectification effect.

  Therefore, in the present invention, a thin plate-like member having a thickness of 0.3 ± 0.1 mm (preferably 0.3 ± 0.05 mm) is used for the rectifying plate 5 arranged in the nozzle body 2. More preferred.

  Further, from the viewpoint of further improving the water-saving effect, the ratio of the total area of the through-holes 53 to the current plate 5 is in the range of 1 to 9% (preferably 2 to 5%). It is preferable to do.

  Furthermore, in this embodiment, the nozzle plate 3 and the rectifying plate 5 are separated from each other, and are arranged in the nozzle body 2 in a state where a certain interval is provided by interposing an annular packing. However, the nozzle plate 3 and the rectifying plate 5 may be integrated in a state where they are spaced apart from each other. Moreover, you may use what the said baffle plate 5 and the said diaphragm | throttle member 4 are integrated.

  In addition, about the space | interval of the said nozzle plate 3 and the said baffle plate 5, it exists in the range of 0.1-2 mm (More preferably, it exists in the range of 0.1-1 mm, More preferably, it is 0.5 ± 0.2 mm. It is preferable to be within the range.

  In the present embodiment, each of the through holes 53 formed in the rectifying plate 5 is arranged so as to draw a concentric circle in the rectifying plate 5, but the arrangement pattern of the through holes 53 is the same. It is not limited to. The arrangement pattern of the through holes 53 is preferably a pattern in which the through holes 53 are arranged in an orderly manner so that each of the through holes has a uniform distribution density in the current plate. . As an example of a preferable arrangement pattern of the through-holes 53, in the rectifying plate 5, one in which each of the through-holes 53 is arranged in a plurality of rows and a plurality of columns can be exemplified.

  Further, in the present embodiment, the total number of the plurality of through holes 53 formed in the rectifying plate 5 is larger than the total number of the plurality of water discharge holes 33 formed in the nozzle plate 3. The relationship between the total number of 53 and the total number of the water discharge holes 33 is not particularly limited. However, if the total number of the plurality of through holes 53 formed in the rectifying plate 5 is larger than the total number of the plurality of water discharge holes 33 formed in the nozzle plate 3, the feel of water discharged from the nozzle 1 of the present invention is felt. It has been confirmed that it becomes smoother.

  Thus, in the present invention, the preferred embodiment is such that the total number of the plurality of through holes 53 formed in the rectifying plate 5 is larger than the total number of the plurality of water discharge holes 33 formed in the nozzle plate 3. . Specifically, the total number of the through holes 33 is preferably 1.5 to 5 times (more preferably 2 to 3 times) the total number of the water discharge holes 33.

<Embodiment 2>
FIG. 6 shows another embodiment of the nozzle 1 of the present invention. The present nozzle 1 according to the present embodiment includes a nozzle body 2, a nozzle plate 3, a throttle member 4, and a rectifying plate 5.

  The nozzle body 2 is the same as that used in the nozzle 1 of the present invention described in the first embodiment.

  The nozzle plate 3 is obtained by processing a thin plate member having a thickness of 0.1 to 0.5 mm into a disk shape, and the diameter φ of the discharge hole 33 formed in the nozzle plate 3 is the same as that of the nozzle plate 3. The thickness t is in the range of 0.8t ≦ φ ≦ 1.2t. The nozzle plate 3 is formed by using a metal thin plate member and forming the discharge holes 33 by means of chemical etching.

  The throttle member 4 is the same as that used in the nozzle 1 of the present invention described in the first embodiment. However, in this embodiment, the opening end of the inlet 41 in the throttle member 4 is the lid member 8. Is blocked.

  The lid member 8 includes a cylindrical body 81 having an outer diameter substantially the same as the diameter of the inlet 41 in the throttle member 4 and a cup-shaped lid body 82. One end of the cylindrical body 81 is provided with four protrusions 811 having a phase difference of 90 degrees, and the periphery of the lid body 82 is provided with four notches 821 having a phase difference of 90 degrees. It will be. The lid member 8 is configured such that the notch 821 in the lid body 82 is fitted into the projection 811 in the cylindrical body 81, whereby the orifice 8 is inserted into the gap between the projection 811 and the notch 821. The hole 83 is formed. Accordingly, the water supplied from the water supply port 10 is introduced into the throttle member 4 after passing through the four orifice holes 83 provided in the lid member 8.

  The rectifying plate 5 is the same as that used in the nozzle 1 of the present invention described in the first embodiment.

  The nozzle 1 of the present invention having the above-described configuration has a thickness within the range of 0.1 to 0.5 mm for the nozzle plate 3, and the diameter φ of the discharge hole 33 formed in the nozzle plate 3 is Since the thickness t of the nozzle plate 3 is within the range of 0.8 t ≦ φ ≦ 1.2 t, the water that has passed through the discharge hole 33 is a fine water droplet that can be said to be mist-shaped. It is discharged in a row.

  And the water discharged as a row | line | column of a fine water droplet contacts a skin with a very soft feeling unlike the continuous streaks of water discharged through the nozzle for the conventional water supply regulation. From this, if the water supplied from the water supply port 10 is discharged through the nozzle 1 of the present invention, a very soft feeling that cannot be obtained by a conventional water supply restriction nozzle can be obtained.

  In the conventional water supply restriction nozzle, it has been confirmed that the phenomenon in which the water flow of the discharged water is biased becomes more obvious as the thickness of the member corresponding to the nozzle plate 3 becomes thinner. However, in this embodiment, although the thickness of the nozzle plate 3 is very thin within the range of 0.1 to 0.5 mm due to the presence of the rectifying plate 5, the phenomenon ( The phenomenon that the water flow of the discharged water is biased) cannot occur.

  Further, in the present embodiment, the lid member 7 is arranged on the throttle member 4, so that water supplied from the water supply port 10 passes through four orifice holes 73 provided in the lid member 7. After that, it is introduced into the neck member 4. In the conventional water supply restriction nozzle, the water supplied from the water supply port 10 is passed by passing through a pore such as the orifice hole 73 (specifically, a pore having a diameter of 2.5 mm or less). It has been confirmed that when the amount is reduced, a phenomenon in which the water flow of the discharged water is biased becomes more obvious. However, in the present embodiment, the phenomenon (a phenomenon in which the water flow of the discharged water is biased) cannot occur due to the presence of the rectifying plate 5.

  Since the remainder is the same as that of the first embodiment, the description is omitted here to avoid repetition.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. For this reason, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

1 Nozzle of the present invention (nozzle for water supply regulation)
2 Nozzle body 21 Primary side open end 211 Female threaded portion 22 Secondary side open end 221 Step 222 Notch 3 Nozzle plate 33 Water discharge hole 4 Throttle member 41 Inlet 42 Outlet 5 Current plate 51 Primary side surface 52 Next side surface 53 Through hole 6 First packing 7 Second packing 8 Lid 10 Water supply port 101 Male thread

Claims (8)

A hollow nozzle body open at both ends;
A nozzle plate provided in the nozzle body or at the opening end on the secondary side of the nozzle body;
Within the nozzle body, a throttle member provided at a position on the primary side of the nozzle plate;
Comprising
With respect to the water that is attached to the water supply port and is introduced into the nozzle body from the water supply port, the amount of introduction is limited by the throttle member, and the secondary side opening from the primary side opening end of the nozzle body A water supply regulating nozzle that passes toward the end and discharges in a state of being subdivided by a plurality of water discharge holes formed in the nozzle plate,
A position on the primary side of the nozzle plate and the secondary side of the throttle member is provided with a rectifying plate in which a plurality of through holes are formed,
The rectifying plate is made of a thin plate member having a thickness of 0.1 to 0.5 mm, and the relationship between the thickness T of the rectifying plate and the diameter Φ of the through hole is 0.8T ≦ Φ ≦ 1. A nozzle for water supply regulation characterized by being 2T. The nozzle for water supply regulation according to claim 1,
The nozzle for water supply regulation by which the space | interval of the said nozzle plate and the said baffle plate was made into the range of 0.1-2 mm. In the nozzle for water supply regulation according to claim 1 or 2,
A nozzle for water supply regulation in which each of the through holes is arranged so as to draw a circle or a concentric circle on the current plate.   The water supply restriction nozzle according to claim 1 or 2, wherein each of the through holes is arranged so as to have a uniform distribution density in the rectifying plate. In the nozzle for water supply regulation according to any one of claims 1 to 4,
A nozzle for water supply regulation in which the ratio of the total area of the through holes to the current plate is 1 to 9%. In the nozzle for water supply regulation according to any one of claims 1 to 5,
The rectifying plate is made of a metal thin plate member,
A nozzle for regulating water supply, wherein the through hole is formed by chemical etching. In the nozzle for water supply regulation according to any one of claims 1 to 6,
The nozzle plate is made of a thin plate member having a thickness of 0.1 to 0.5 mm, and the relationship between the thickness t of the nozzle plate and the diameter φ of the through hole is 0.8t ≦ φ ≦ 1. Nozzle for water supply regulation made 2t. In the nozzle for water supply regulation according to any one of claims 1 to 7,
The water supply restriction nozzle in which the total number of the plurality of through holes formed in the current plate is larger than the total number of the plurality of water discharge holes formed in the nozzle plate.

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