JP2004188245A - Shower head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact shower head capable of carrying out shower water-letting out with sufficient shower sense while being foam-like shower, and to provide a shower head with excellent maintenance property easily assembled in the shower head capable of carrying out water-letting out switching. <P>SOLUTION: The shower head for carrying out water-letting out of different water-letting out forms by switching the water-letting out forms is provided with a division means for dividing a water flow passage; a water-letting out switching means for switching the water flow passage; a water-spraying means having a plurality of water-spraying holes; and a retaining means mounted to the shower head body or the division means in order to retain the water-spraying means on the shower head body. Air is mixed into the water-spraying means from a gap between the retaining means and the shower head body mounted with the retaining means or the division means, and the foam-like water-letting out is formed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a water supply device. In particular, the present invention relates to a water supply device capable of performing foam spouting.
[0002]
[Prior art]
In a kitchen faucet, since there is a distance from the spout to the bottom of the sink, there is a possibility that the hot water hits the bottom of the sink when the water is spouted and the hot water spatters around the sink. (This phenomenon is called the water splash phenomenon.)
Therefore, measures have been taken to prevent water splashing by mixing bubbles in hot and cold water to form a foamy spout.
On the other hand, at the time of washing the dishes, if the water spouting area is widened as a plurality of spouts instead of one spout, and the spouts are evenly applied to the dishes, the washing action becomes easier.
For this reason, a shower head and a faucet equipped with the shower head are proposed, which employ shower water spouts used in bathrooms and vanities so that large water can be spouted at a time when washing large-sized dishes. Have been.
[0003]
However, in the case of shower water spouting, when the amount of water is increased, the force of the water increases, and there is a possibility that a water splashing phenomenon may occur.
Particularly in kitchens, single-lever hot-water mixer taps that adjust the temperature of hot water and the amount of water discharged with a single lever are often used in consideration of operability. This single lever can perform all operations with one single lever, so it is very easy to operate, but it is difficult to make fine adjustments, and the amount of water increases more than necessary. There is a risk of splashing.
Therefore, it is desirable to make the shower spout foamy. However, it has not been proposed to foam the spout to a thin spout like a shower in a bathroom or a vanity stand. By adopting a plurality of watering holes that are slightly thinner than a single thick foamy spout as shown in FIG. 14 and FIG. 15, it is possible to obtain a spouty shower-like spout and perform widespread spouting. Prevents splashing.
[0004]
A specific configuration will be described with reference to FIGS.
In the shower head BX, a switching handle 122X is provided on the head body 2X, and by operating the switching handle 122X, the water discharge mode is switched to normal water discharge or a plurality of foam-like water discharges.
Specifically, the position of the ball 6X in the head body 2X changes in conjunction with the switching handle 122X, and closes one of the water holes 53X (one is shown in the figure), and the other is closed. Water is discharged from the water holes that are not filled.
And the normal water discharge is performed from the water discharge port 131X provided in the center of the watering plate 10X.
Further, the plurality of foamy water spouts are spouted from water sprinkling holes 101X arranged in the circumferential direction of the water sprinkling plate 10X.
As shown in FIG. 15, the water sprinkling holes 101 </ b> X for discharging a plurality of foam-like waters have a diameter of 6.5, and the number of the water sprinkling holes 101 X is eight. An air suction port 134X is provided between the water sprinkling holes 101X.
A water hole 81X is provided upstream of the water hole 101X. The water passage hole 81X has a diameter of 1.2, and the number of the water passage holes 81X is three for one water spray hole 101X.
Further, an air mixing chamber 106X and a net 11X are provided between the water passage hole 81X and the water spray hole 101X. The air suction port 134X extends from the sprinkling plate 10X through the net 11X to the center of the aeration chamber 106X.
Then, in order to form a foamy water discharge, when the air flows into the aeration chamber 106X from the water hole 81X, the air is sucked from the air suction port 134X, and the air is mixed into the water flow to form a foam, and the water is sprayed. Water is discharged from the hole 101X.
(For example, see Non-Patent Document 1)
[0005]
[Non-patent document 1]
TOTO General Catalog 2002-2003 P720-723
[0006]
[Problems to be solved by the invention]
However, the conventionally proposed faucet having a plurality of foamy water discharging functions has the following advantages and disadvantages.
(merit)
By using foam spouting, splashing can be reduced.
By using a plurality of water spouts, the water is spouted over a wide area, and the water spouts evenly on the tableware, and the washing action is easily performed.
(Demerit)
The position of the ball 6X in the head main body 2X changes in conjunction with the switching handle 122X, and the water discharging mode is switched by closing one of the water holes 53X. Therefore, if the foreign matter in the water is accumulated in the shower head BX and the shower head BX is disassembled and the foreign matter is removed, the switching ball BX also comes off, and the ball 6X rolls and is lost. It is difficult for ordinary users to reassemble or reassemble, and it cannot be said that maintenance is excellent. Therefore, it is necessary to remove the foreign matter outside the shower head.
Further, an air suction port 134X is provided between the water sprinkling holes 101X to form a foamy water discharge, and the air suction port 134X extends from the water sprinkling plate 10X through the net 11X to the center of the aeration chamber 106X. Therefore, the interval between the water sprinkling holes 101X becomes large, so that it is difficult to say that the spouting water can provide a sufficient shower feeling. In addition, the shape of the shower head has become large.
[0007]
In view of the above, in order to solve the above-described problems, the present invention has an object to provide a shower head capable of performing water discharge switching, which is a foamy shower but capable of performing shower water discharge with a sufficient shower feeling. And
It is another object of the present invention to provide a shower head that can be easily assembled and has excellent maintainability.
[0008]
[Means for Solving the Problems]
Therefore, according to claim 1 of the present invention, there is provided a shower head that switches a water discharge mode to perform water discharge in a different water discharge mode, wherein the shower head body includes a partitioning unit that partitions a water passage, and a water discharge switching unit that switches a water passage. And a watering means having a plurality of watering holes, and a holding means attached to the shower head body or the partitioning means for holding the watering means, the holding means, and the showerhead body or the partitioning means having the holding means attached thereto. The shower head is characterized in that air is mixed into the water sprinkling means through the gap between the water and the water to form a foam spout.
[0009]
In the conventional shower head, the air suction port 134X for supplying air is provided between the water sprinkling holes 101X, but the air is supplied into the water sprinkling plate using the gap when assembled as in the present invention. Therefore, the shower head itself can be made compact because there is no need to increase the number of members and it is not necessary to separately form a portion for supplying air. Furthermore, since there is no need to separately form the external appearance, the appearance can be improved.
[0010]
According to a second aspect of the present invention, there is provided a shower head for performing water discharge in a different water discharge form by switching a water discharge form, wherein a valve seat is positioned and disposed in a water passage of the shower head body, and further, a substantially cylindrical flow is provided. The upper surface of the path switching cylinder is in contact with the lower surface of the valve seat, and the flow path switching cylinder is rotatably disposed, and the water spray nozzle having the water passage hole and the water spray plate having the water hole are connected to the flow path switching cylinder. It is arranged on the outside, and the water outlet is attached to the channel switching cylinder so that the channel switching cylinder, the watering nozzle, and the watering plate can rotate integrally, and the watering plate is formed by the collar formed in the water discharging port. Further, a net is arranged on the upstream side inside the sprinkler plate, and an air inlet is formed at the collar of the spout port. The air is sucked from the air inlet port and flows into the sprinkler plate. Air is supplied into the sprinkler plate through the gap between the -Water can be formed, and by rotating the flow path switching cylinder, the water flowing through the water passage hole formed in the valve seat is switched between the outside and the inside of the flow path switching cylinder, and the outside of the flow path switching cylinder When water was passed through the nozzle, a foamy shower water spout was performed from the water sprinkling hole via the water hole formed in the water nozzle, and when the water was flowed inside the flow path switching cylinder, it was formed in the water spouting part. The shower head is characterized by being spouted from a spout.
[0011]
In the conventional shower head, the air suction port 134X for supplying air is provided between the water sprinkling holes 101X, but the air is supplied into the water sprinkling plate using the gap when assembled as in the present invention. Therefore, the shower head itself can be made compact because there is no need to increase the number of members and it is not necessary to separately form a portion for supplying air. Furthermore, since there is no need to separately form the external appearance, the appearance can be improved.
In addition, since the space between the water spray holes of the water spray plate can be made dense, it is possible to realize water discharge with a shower feeling while being foam discharge.
Further, in the shower head capable of switching the water discharge, it is possible to provide a shower head that can be easily assembled and has excellent maintainability for the user.
In other words, by removing the water discharge port, it is possible to easily clean the water holes and the water holes that are likely to be clogged by foreign substances in the water.
And since the flow path of the water discharge form is switched using the inside and the outside of the flow path switching cylinder, the structure can be simplified and the size can be reduced as compared with the related art.
Note that positioning and arranging the valve seat in the water passage of the shower head main body means that the shower head main body and the valve seat are arranged even if the valve seat separate from the shower head main body is arranged so as not to rotate. May be integrally formed, as long as the valve seat does not rotate together with the rotation of the flow path switching cylinder.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
The shower head according to the present invention is a shower head that switches a water discharge mode to discharge water in different water discharge modes.
In the shower head main body, a partitioning means for partitioning the water passage, a water discharge switching means for switching the water passage, a water sprinkling means having a plurality of water sprinkling holes, and attached to the shower head main body or the partitioning means to hold the water sprinkling means. Holding means to be provided.
Then, air is mixed into the water sprinkling means from a gap between the holding means and the shower head body or the partitioning means to which the holding means is attached, thereby forming foam water discharge.
In particular, by making the diameters of the plurality of watering holes provided in the watering means small and dense, it is possible to form foamy shower water.
[0013]
An embodiment in which each of the constituent units constituting the shower head of the present invention has the following configuration will be described more specifically as an embodiment with reference to the drawings.
It is most compact and the assembling property is good when the partitioning means is constituted by a flow path switching cylinder.
Then, a water passage is defined by the inside and outside of the flow path switching cylinder. The partitioning means only needs to be capable of partitioning the flow path, and is not limited thereto, and may be partitioned by a pipe or the like.
The water discharge switching means for switching the water passage is configured to switch the water passage by rotating the flow passage switching cylinder with respect to the valve seat. With such a configuration including the valve seat and the flow path switching cylinder, it is possible to provide a water discharge switching unit that is compact and has good operability. Note that the water discharge switching means is not limited to this, and may use a ball that closes the water passage hole as in the related art.
The water sprinkling means is formed of a water sprinkling plate having a normal single water spout at the center and a plurality of water sprinkling holes formed around the water spout for shower water spouting. The water spraying means is not limited to this, and may be a foamy water discharge from a mountain water hole formed at the center. However, it can be said that the effect of preventing water splashing is further improved by using foam water spouting from the surrounding watering holes.
The holding means is constituted by a water discharge port, and in order to hold the water sprinkling means, the water discharge port is screwed and connected to a flow path switching cylinder as a partitioning means so as to be held by a brim formed in the water discharge port. Attached. The holding means is not limited to this. For example, an attachment member may be formed on the shower head main body side to take in air from a gap between the shower head main body and the water sprinkling means.
[0014]
FIG. 1 shows a sectional view of an entire faucet having a shower head according to the present invention.
This faucet A is a single-lever hot-water mixing faucet used especially in a kitchen.
Mixing of hot and cold water and adjustment of the amount of discharged water are performed by operating a single lever 19 by a single lever hot / water mixing cartridge 19 built in the faucet A. Specifically, this is performed by adjusting the degree of overlap of the water passage holes of the movable disk 18a and the fixed disk 18b arranged in the single lever hot / water mixing cartridge 19.
Then, hot and cold water is mixed in the single lever hot and cold water mixing cartridge 19, and hot and cold water is supplied to the shower head B via the flexible hose 16, and discharged to perform one straightened water discharge (normal water discharge). Water is discharged from either the water outlet 131 or the water spray hole 101 for performing a foamy and shower-like water discharge.
As shown in FIG. 3, the water outlet 131 is arranged at the center of the lower surface of the shower head B, and a plurality of water sprinkling holes 101 are arranged around the water outlet 131 in double.
These water discharge modes can be selected by operating the switching handle 122 provided on the shower head B.
FIG. 4A shows a case where water is spouted from the sprinkling hole 101, and FIG. 4B shows a case where water is spouted from the water spout 131.
[0015]
Next, the internal structure of the shower head B will be described more specifically below.
FIG. 2 shows a sectional view of the shower head B.
The appearance of the shower head B is constituted by a plated head cover 1, and the shower head main body 2 is fixed inside the cover 1 with a screw 3 with an O-ring. At this time, the rib provided on the inner surface of the head cover 1 and the rib provided on the upper surface of the shower head main body 2 are engaged with each other so that the shower head main body 2 can be fixed in a specific arrangement direction.
The distal end of the water-passing member 15 inserted from the grip side of the head cover 1 is inserted into the water passage 21 of the shower head main body 2 via an O-ring.
Here, as the shower head B, an example was described in which a separate shower head body 2 was incorporated in a head cover 1 having an external appearance, but the shower head main body 2 formed an external appearance without providing the head cover 1. You may.
[0016]
As shown in FIG. 2, a spring 4 serving as an urging means and a valve seat 5 to which a packing such as an X-ring or an O-ring is mounted are sequentially installed inside the shower head main body 2. As the urging means, any means can be used as long as the valve seat 5 can be in close contact with the upper surface 61 of the flow path switching cylinder 6. For example, elastic packing may be used, and the urging means is not particularly limited to the spring 4. However, it can be said that the application of the spring 4 in the form of a spring is most suitable for inexpensive and long-term use.
The valve seat 5 is attached so as not to rotate with respect to the shower head main body 2. As shown in FIG. 7, the rotation preventing means is prevented from rotating by the engagement between the projection 51 provided on the valve seat 5 and the groove 22 provided on the inner surface of the shower head main body 2 as shown in FIG. I have to.
As shown in FIG. 7, three water passage holes 53 are formed at equal intervals in the valve seat 5. A packing recess 52 is formed on the side surface, and a packing such as an X-ring or an O-ring is fitted into the packing recess 52 to maintain water tightness between the valve seat 5 and the shower head main body 2.
Further, a lower surface 55 of the valve seat 5 is formed in a flat shape, and a water passage hole 53 is arranged on the flat surface.
Further, 56 is formed into a concave shape by removing the thickness of the resin for molding.
Although the case where the valve seat separate from the shower head body is arranged so as not to rotate has been described as an example, the shower head body and the valve seat may be integrally formed, and the valve seat may be switched to the flow path. Any structure that does not rotate together with the rotation of the cylinder may be used.
[0017]
The lower surface 55 of the valve seat 5 is installed such that the upper surface 61 of the flow path switching cylinder 6 shown in FIG. Further, three claw portions 62 provided on the upper surface side of the flow path switching cylinder 6 are arranged so as to fit into the grooves 23 or the concave portions 24 provided inside the shower head main body 2.
[0018]
Note that a plate 7 shown in FIG. 9 is used as a retaining means so that the channel switching cylinder 6 does not come off from the shower head main body 2.
With the central opening 73 provided at the center of the plate 7 penetrating the lower side of the flow path switching cylinder 6, the claw 62 provided on the upper surface side of the flow path switching cylinder 6 is further fitted with the plate 7 and the shower. The plate 7 is fixed to the shower head main body 2 so as to be sandwiched between the head main body 2.
At this time, the plate 7 was fixed by fitting two claw portions 71 of the plate 7 into two square holes 25 formed in the shower head main body 2 as shown in FIG.
In addition, a plurality of water passage grooves 72 as shown in FIG. 9 are provided on the inner peripheral surface of the plate 7, and water is passed through the water passage grooves 72 to the water sprinkling holes 101 for discharging foamy showers.
By providing the water passage groove 72 in this manner, pressure loss during water passage can be reduced.
[0019]
In the state where the shower head is assembled as described above, the valve seat 5 is always in contact with the flow switching cylinder 6 by receiving the pressing force of the spring 4, and thus the valve seat 5 is provided on the upper surface 61 of the flow switching cylinder 6. The sealing property between the O-ring provided in the packing recess 66 on the outer periphery of the water hole 63 and the lower surface 55 of the valve seat 5 is ensured. Therefore, when the water passage is switched by the rotation of the flow path switching cylinder 6 to discharge water from the water outlet 131 or the water sprinkling hole 101, a problem that hot water leaks from the unselected water discharging port 131 or the water sprinkling hole 101 is reduced. be able to.
[0020]
Next, the sprinkling nozzle 8 shown in FIG. 10 is attached to the shower head main body 2, and at this time, the portions in contact with the shower head main body 2 and the flow path switching cylinder 6 are sealed with packing, as shown in FIG. Then, in order to fix the arrangement position, the projection 83 of the watering nozzle 8 shown in FIG. 10 is arranged in a state of being engaged with the groove 64 of the flow path switching cylinder 6 shown in FIG.
The water spray nozzle 8 is provided with a plurality of water holes 81 smaller than the water holes 101 provided in the water spray plate 10 so as to be arranged on the same axis of the water holes 101.
Then, as shown in FIG. 2, a filter 9 is arranged upstream of the water passage hole 81 so as to remove foreign substances in the water passage from the water passage. Further, the filter 9 is provided with a filter 9 having a plurality of holes smaller than the water passage hole 81 in order to also function to prevent clogging of the water passage hole 81.
[0021]
Next, a watering plate 10 shown in FIG.
At this time, as described above, the water supply hole 81 is installed so as to be located directly above the water spray hole 101 of the water spray plate 10. As positioning means for this purpose, the projection 82 of the watering nozzle 8 and the cutout groove 102 of the watering plate 10 are arranged in an engaged state.
Further, two nets 11 are installed at an interval on the inner side of the water sprinkling hole 101.
Further, the water sprinkling holes 101 are arranged on the double circumference of the water sprinkling plate 10, and the diameter of the water sprinkling holes 101 on the inner peripheral side is smaller than the diameter of the water sprinkling holes 101 on the outer peripheral side. For this reason, the water spray from the water spray hole 101 on the inner peripheral side is secured, and the water discharge from the water spray hole 101 on the outer peripheral side realizes a voluminous water discharge, and the water discharge from the water spray hole 101 on the inner circumferential side is scattered. Can be prevented.
[0022]
Note that the cover 12 is attached to the sprinkling plate 10 when the sprinkling plate 10 is attached. As a means for securely attaching the cover 10 so that the cover 10 does not come off, the projection 121 of the cover 12 is fitted into the cutout groove 102 of the sprinkling plate 10 and connected to the sprinkling nozzle 8 in that state, thereby connecting the sprinkling nozzle 8 and the sprinkling plate 10. The cover 12 is sandwiched between them.
A center opening 105 for passing the flow switching tube 6 is provided at the center of the water spray plate 10, and the projection of the flow switching tube 6 is formed in the cutout groove 103 of the water spray plate 10 when the water spray plate 10 is attached. 65 are fitted. Therefore, the sprinkling plate 10 and the sprinkling nozzle 8 rotate simultaneously with the rotation of the flow path switching cylinder 6.
[0023]
The water outlet 13 is screwed and connected to the channel switching cylinder 6 as a retaining means for the water spray nozzle 8 and the water spray plate 10, and the collar 132 formed in the water outlet 13 is opened at the center of the water spray plate 10. The concave surface 104 formed at 105 is supported.
A rectification net 14 is provided inside the flow switching cylinder 6 to improve rectification, and the water discharge port 13 prevents the rectification net 14 from falling off.
In addition, a tool insertion groove 133 is formed on the flange 132 of the water outlet 13 to securely attach the water outlet 13. By inserting a flat plate or the like into this tool insertion groove 133 and rotating it, the water discharge port 13 can be easily screwed into the flow path switching cylinder 6. Since the water outlet 13 can be removed using the tool insertion groove 133, the filter 9 can be cleaned by removing the water spray plate 10 and the water spray nozzle 8.
Further, an air inlet 134 is formed in the flange 132 of the water outlet 13, and the air mixing chamber in the water spray plate 10 passes through the notch 103 formed in the central opening 105 of the water spray plate 10. Air can be sucked into 106.
[0024]
Next, a description will be given of a structure for switching the water discharge mode.
The water discharging mode can be switched by reciprocating the switching handle 122 provided on the cover 12 by 60 degrees. At this time, the channel switching cylinder 6 also rotates at the same time.
Then, the claw portion 62 formed on the flow path switching cylinder 6 first escapes from the concave portion 24 of the shower head main body, moves along the groove 23 in a state where it is pushed inward and is bent, and is fitted into another concave portion 24. Put in.
When the claw portion 62 is fitted in the concave portion 24, it has a water discharge form of either shower water discharge or one rectified water discharge, and the claw portion 62 of the flow path switching cylinder 6 is located in the groove 23. Is a state during the switching of the water discharge mode. That is, the arrangement interval of the concave portions 24 (the same angle as the operation angle of the switching handle 122 of 60 degrees) is one half of the arrangement interval (120 degrees) of the water passage holes 53 and 63. Therefore, when the claw portion 62 moves from the concave portion 24 to the next adjacent concave portion 24, the water discharge mode is switched.
[0025]
Note that, in the case of a specification in which the water discharge is switched by restricting the rotation as described above and the water discharge is switched by moving between the determined angles, as shown in FIG. 24 may be connected by a groove 23.
As another example of the water discharge switching, there is a specification in which the water discharge form is repeatedly switched while rotating the sprinkling plate 10. In this case, the groove 23 is connected 360 degrees as shown in FIG. 6C so that the rotation of the claw 62 is not restricted. Then, the concave portion 24 may be arranged at a predetermined angle (60 degrees) as the target.
When the rotation control is not provided, as shown in FIGS. 2 and 3, the cover 12 having a non-slip surface on the outer periphery may be formed as a switching handle without forming the switching handle 122 in a protruding shape. .
[0026]
Next, formation of a foamy shower that discharges water from the water sprinkling hole 101 will be described.
In order to improve the feeling of showering, as compared with the conventional shower head BX shown in FIGS. 14 and 15, the watering holes 101 of the watering plate are made as small as possible, and the number of watering holes is also increased as much as possible. We succeeded in obtaining foamy spouting water with a diameter in the range of 1.0 to 2.5.
In order to obtain a shower feeling similar to that of a shower in a bathroom or a vanity table, and to make a foamy shower water discharge, the following matters are important. Therefore, in order to obtain a better foamy shower water discharge and a shower sensation, it is necessary to appropriately correlate the dimensions and arrangement.
(1) Reducing the diameter of the water sprinkling hole 101 and increasing the number of holes (2) Ensuring the flow velocity from the water passage hole 81 (3) Sufficiently mixing air in the air mixing chamber 106 (4) (5) Before the water discharged from the water passage hole 81 is foamed and discharged from the water discharge hole 101, the air mixing chamber 106 is discharged. Not to be filled with water
Further, in the shower head B provided with the water discharge switching mechanism as shown in FIGS.
(1) The pressure loss in the shower head B tends to increase when the shower water is discharged by reducing the diameter of the water passage hole 81, but the normal water discharge from the water discharge port 131 and the shower water discharge from the water spray hole 101 are likely to occur. The difference between the pressure loss and the pressure must not be large.
The reason will be described below.
If the pressure loss in the water flow path is large, water flow becomes difficult.
While the water pressure on the water supply side is about 0.2 MPa, the water pressure on the hot water supply side is only about 0.05 MPa. Such a difference occurs because the water passes through a water heater, and the water pressure further decreases when the water passes through an electric water heater or the like.
Therefore, in particular, since the water pressure on the hot water supply side is smaller than the water pressure on the water supply side, the water pressure is easily affected by the pressure loss in the water flow path, and the hot water is difficult to flow.
On the other hand, in the shower head B equipped with the water discharge switching mechanism, the water passage of the shower water is complicated, and thus the pressure loss tends to be larger than that of the water passage of the normal water discharge.
Therefore, in a shower head having a large difference between the pressure loss in the shower water passage and the pressure loss in the normal water passage, when hot water is mixed at an appropriate temperature and used as the shower water, the normal water discharge is performed. When the water discharge mode is switched, the amount of hot water that has been more affected by the pressure loss relatively increases, so that the temperature of the discharged hot water increases.
Further, if the mode is switched to the shower water discharge when the water is normally used for the water discharge, the amount of the hot water which is more susceptible to the pressure loss is relatively reduced, so that the temperature of the hot water is lowered.
It is necessary to minimize the difference in pressure loss as much as possible in order to reduce the temperature change of hot and cold water caused by such water discharge switching.
[0028]
In view of the above, it is preferable to set the dimensions of each component as follows in order to discharge water with a foamy shower feeling.
First, it is preferable that the water sprinkling hole 101 (diameter on the outer side) be set in a range from a diameter of 1.0 to a diameter of 2.5.
In particular, by changing the hole diameter of the water sprinkling hole 101 between the outer periphery and the inner periphery, and making the outer hole diameter larger than the inner peripheral hole diameter, the outer periphery is relatively thick and soft water discharge, and the inner periphery is thin and relatively strong water discharge. Is preferred. With this hail, water discharge from the outer peripheral hole reduces water splash, and also plays a role of preventing water splash from the inner peripheral hole with vigorous water discharge, and water discharge from the inner peripheral hole is a vigorous water discharge. It plays a role in improving cleanability.
Specifically, the water sprinkling holes 101 are arranged 24 pieces in two rounds, the outer circumference is 2.1 mm in diameter, and the inner circumference is 1.5 mm in diameter. The diameter of the outer peripheral hole is set to 2.1 instead of 2.0 in order to make the water discharge more voluminous. In addition, the number of holes of the water sprinkling holes 101 is set to 48 in total, but it is preferable to change the number according to the hole diameter, so that the foaming shower feeling and the flow rate can be adjusted to adjust the momentum of water spouting. The number is preferably 20 to 100, and more preferably 30 to 60. In particular, by setting the number of water sprinkling holes 101 to 30 to 60, a shower feeling can be obtained, the shower head B (water sprinkling plate 10) can be made compact, and a water discharge switching means is provided. Therefore, the change in hot water temperature can be further reduced since there is no large difference in pressure loss at the time of water discharge switching.
[0029]
In addition, although the flow rate increases as the total area of the water holes 81 of the watering nozzle 8 decreases, the difference between the pressure loss and the normal water discharge increases as the pressure loss increases. Was found.
That is, it is preferable to set the water passage hole 81 in a range of 0.5 to 1.0 in diameter.
If the diameter of the water passage hole 81 is less than 0.5, the water has a momentum, but the water discharge diameter is smaller than the diameter of the water spray hole, and the shower lacks a sense of volume. Therefore, comfort is lacking.
Further, when the diameter exceeds 1.0, the amount of water discharged from the water passage hole 81 increases, and therefore, in the water spray hole 101 having the above-described hole diameter, before the water is discharged from the water spray hole 101, the air mixing chamber 106 However, there is a problem that the water stays and does not foam.
Further, it is most preferable that the water passage holes 81 have a diameter of 0.7 from the viewpoint of the water force and foaming, and furthermore, in consideration of a shower feeling and a pressure loss, 48 water holes are arranged in the same number as the water spray holes 101. Is preferred.
[0030]
Further, the water discharge state also changes due to a change in the distance L from the water passage hole 81 of the water spray nozzle 8 to the water spray hole 101 of the water spray plate 10. The smaller the distance L from the water supply hole 81 of the watering nozzle 8 to the watering hole 101 of the watering plate 10 is, the higher the flow velocity is, but the spouting is in a disturbed state. Will decrease. Therefore, it is preferable to set it in the range of 4 to 6 mm.
Then, in the range of the diameter 1.5 to 2.1 of the water sprinkling hole 101, the most stable spouting is performed in an optimum foam state when the distance L is around 5 mm.
[0031]
The water spouting hole 101 of the water sprinkling plate 10 has a higher spout than the water spouting 81 because the water spouting from the sprinkling nozzle 8 is disturbed by the net 11, and it is necessary to pass the foamed spouting while mixing air. It is preferable to make it larger.
However, if it is too large, the water discharged from the water sprinkling hole 101 becomes thick and the flow velocity decreases, so that the shower feeling and the detergency decrease.
That is, as shown in FIG. 7 (b), by increasing the diameter of the inside of the water sprinkling hole 101, the water flowing from the water sprinkling hole 81 can be sufficiently received by the water sprinkling hole 101 and can be passed through the hole. In addition, by reducing the diameter on the outer side, it is possible to obtain water discharge at a sufficient flow rate with a water discharge diameter having a shower feeling. Therefore, for example, as a specific shape, a conical watering hole 101 may be used. When the inside diameter and the outside diameter of the water sprinkling hole 101 are changed in this way, the hole diameter of the water sprinkling hole 101 indicates the outside diameter. When the outer diameter was 1.5 and 2.1, the inner diameter was 2.6.
[0032]
In addition, it is preferable to select and install a net that provides optimal foam-like water discharge for the hole diameters of the watering nozzle and the watering plate. Therefore, in order to form a foam, two nets 11 are installed inside the sprinkling plate 10 at intervals.
Although the number of the nets 11 is one, if the number is one, the force of the water discharge becomes strong, and the water discharge becomes thin, lacking a sense of volume. It is good to use two.
In this embodiment, the mesh 11 has a mesh size of 40 to 80, and two meshes 11 are arranged at an interval S shown in FIG. 5, and the interval S is preferably set in a range of 0.5 to 2.5 mm. In particular, it is preferable to set the wire diameter of the net 11 in the range of 0.12 to 0.18 mm to make the wire diameter smaller.
In the case of 80 mesh, the interval S is set as narrow as 0.5 mm, and in the case of 40 mesh, the interval S is set as wide as 2.5 mm. In other words, the more the number of meshes is increased, the narrower the interval S is, the more stable foamy water discharge can be formed.
If the number of meshes exceeds 80, the pressure loss increases, and even if the interval is reduced, satisfactory foam will not be obtained. And, when the water supply pressure is low, the foam is less likely to be foamed. If the number of meshes is less than 50, the water discharge becomes unstable and disturbed.
The gap S has a role of stabilizing water discharge. However, if the distance of the gap S is smaller than 0.5 mm, the water discharge diameter becomes small, the water discharge is disturbed, and the appearance of the water discharge state deteriorates. Further, under the conditions of the present embodiment, a foam state is obtained at the gap S2.5 mm, but when the gap is larger than that, the foaming is further reduced, the flow velocity is decreased, and it cannot be said that the water is discharged satisfactorily.
As shown in FIG. 5, when the hole diameter of the water spray hole 101, the hole diameter of the water hole 81, and the distance L from the water hole 81 of the water spray nozzle 8 to the water hole 101 of the water spray plate 10, the gap S is About 2 mm is the optimal distance. This is because the smaller the size is, the more easily the water discharge becomes turbulent, and the larger the size becomes, the less the foam becomes.
[0033]
Further, as an element that affects water discharge, such as the distance L and the gap S, the plate thickness T of the sprinkling plate 10 can be cited.
This plate thickness T corresponds to the depth of the water sprinkling hole 101 and has an effect on the water discharge state.
Although the optimum value of the plate thickness T also varies depending on the watering hole diameter, the plate thickness T is preferably set to 1.5 to 6 mm with respect to the watering hole diameter. More preferably, it is preferably 1.5 to 3 mm.
Under the conditions of the present embodiment, if the plate thickness T is smaller than 1.5 mm, the plate thickness becomes extremely thin, and the strength becomes weak, which is not preferable. In addition, as the plate thickness T increases, the hole depth of the water sprinkling holes 101 increases, and the pressure loss increases. Therefore, it is difficult to form a foam, and when the plate thickness T exceeds 6 mm, it does not completely form a foam. In particular, when the diameter of the sprinkling hole 101 is smaller, it is preferable to set the diameter so as not to exceed 3 mm.
Therefore, it is particularly preferable to set the plate thickness T to 2 mm. By setting the plate thickness T to a sufficient value, it is possible to secure sufficient foam-like water discharge without affecting the thickness, and there is no problem in strength.
[0034]
As described above, in order to obtain the optimum foam spouting with the required sprinkling hole diameter 101, it is preferable to take the optimum values of the water passing hole 81 of the watering nozzle 8, the distance L, and the gap S between the nets.
[0035]
In the embodiment described above, the shower head that performs the foam shower discharge is described. However, in the first aspect of the present invention, the present invention can be applied to the shower discharge that does not generate the foam.
Further, in the shower head of the above-described embodiment in which the foamy shower water is discharged, the power of the water is adjusted in accordance with the amount of water discharged to improve the cleaning power and the water saving effect, and the diameter of the water spray hole is further reduced. Even in the case of water sprinkling holes, foamy shower water can be obtained to improve the feeling of showering, and compactness is possible. That is, it is possible to make the shower water discharge thinner and more powerful than the conventional foam shower. Further, since the foam is spouted with air, the shower is a vigorous shower. However, it can be a shower spout that has a soft touch and also has a water splash reducing effect and a water saving effect. According to the present invention, it is possible to achieve a soft feel and reduced water splash due to foam water discharge, a water saving effect due to vigorous water discharge, and an improved shower feeling due to fine water discharge.
The shower head B of the present invention is most effective when applied to a kitchen faucet, but can also be applied to a faucet such as a vanity stand.
[0036]
【The invention's effect】
According to the present invention, by adopting the above-described structure, a shower head capable of switching water discharge can provide a compact shower head capable of performing shower water discharge with a sufficient shower feeling while being a foamy shower. .
Further, it is possible to provide a shower head that can be easily assembled and has excellent maintainability.
[Brief description of the drawings]
FIG. 1 is a sectional view of a single-lever hot-water mixing tap to which a shower head according to the present invention is applied.
FIG. 2 is a cross-sectional view of the shower head of FIG.
FIG. 3 is a view of the shower head of FIG. 2 as viewed from a sprinkling hole side.
FIG. 4 is a diagram illustrating a switching state of a water discharge mode in the shower head of FIG. 2;
FIG. 5 is a partial sectional view showing a positional relationship between a water passage hole and a water spray hole in the shower head of FIG.
FIG. 6 is a shower head main body constituting the shower head of FIG. 2;
FIG. 7 is a valve seat constituting the shower head of FIG. 2;
FIG. 8 is a flow path switching cylinder constituting the shower head of FIG. 2;
FIG. 9 is a plate constituting the shower head of FIG. 2;
FIG. 10 is a watering nozzle constituting the shower head of FIG. 2;
FIG. 11 is a cover constituting the shower head of FIG. 2;
FIG. 12 is a sprinkler plate constituting the shower head of FIG. 2;
FIG. 13 shows a water discharge port constituting the shower head of FIG. 2;
FIG. 14 is a conventional shower head.
FIG. 15 is a view of the conventional shower head (FIG. 14) as viewed from a water spray hole side.
[Explanation of symbols]
A water faucet (single lever hot water mixing faucet)
B Shower head 1 Head cover 2 Shower head body 21 Water passage 22 Groove 23 Groove 24 Recess 25 Square hole 26 Screw hole 27 Packing recess 3 Screw with O-ring 4 Spring 5 Valve seat 51 Projection 52 Packing recess 53 Water passage hole 54 Upper surface 55 Lower surface 56
6 Flow path switching cylinder 61 Upper surface 62 Claw 63 Water passage hole 64 Groove 65 Projection 66 Packing recess 67 Water passage recess 68 Packing recess 7 Plate 71 Claw 72 Water passage groove 73 Central opening 8 Water spray nozzle 81 Water passage hole 82 Projection Part 83 Projection 84 Center opening 9 Filter 10 Watering plate 101 Watering hole 102 Notch groove 103 Notch groove 104 Concave surface 105 Central opening 106 Air mixing chamber 11 Net 11a Chewing material 12 Cover 121 Projection 122 Switching handle 123 Central opening 13 Water outlet Part 131 water outlet 132 flange 133 tool insertion groove 134 air inlet 14 straightening net 15 water-permeable member 16 flexible hose 17 water supply pipe, hot water supply pipe 18 single lever hot water mixing cartridge 18a movable disk 18b fixed disk 19 single lever

Claims (2)

A shower head that performs water discharge in a different water discharge form by switching a water discharge form,
In the shower head main body, a partitioning means for partitioning the water passage, a water discharge switching means for switching the water passage, a water sprinkling means having a plurality of water sprinkling holes, and attached to the shower head main body or the dividing means to hold the water sprinkling means Holding means,
A shower head, wherein air is mixed into water spraying means from a gap between a holding means and a shower head body or a partition means to which the holding means is attached, thereby forming a foam spout. A shower head that performs water discharge in a different water discharge form by switching a water discharge form,
Position and arrange the valve seat in the water passage of this shower head body,
Further, the upper surface of the substantially cylindrical flow switching cylinder is in contact with the lower surface of the valve seat, and the flow switching cylinder is disposed rotatably,
A sprinkling nozzle having a water passage hole and a sprinkling plate having a sprinkling hole are arranged outside the flow channel switching cylinder, and a spout port portion such that the flow channel switching tube, the water sprinkling nozzle, and the water sprinkling plate can be integrally rotated. Attached to the flow path switching cylinder, holding the sprinkler plate with the collar formed in the spout port,
In addition, a net is arranged upstream and inside of this sprinkler plate,
An air inlet is formed at the collar of the water outlet, and air is supplied from the air inlet to the water spray plate through the space between the water spray plate and the flow path switching cylinder. Can form foamy shower spout,
By rotating the flow path switching cylinder, the water flow from the water passage hole formed in the valve seat is switched between the outside and the inside of the flow path switching cylinder,
When water is passed to the outside of the flow path switching cylinder, foamy shower water is discharged from the water sprinkling hole via the water flowing hole formed in the water flowing nozzle,
A shower head, wherein water is discharged from a water outlet formed in a water outlet when water flows inside a flow path switching cylinder.

Images