JP5762422B2 - Water saving top - Google Patents

Description

  The present invention is, for example, attached to a water faucet (including not only general water faucets but also special-purpose water faucets for laboratories) and water discharge pipes such as shower heads. The present invention relates to a foam water generating piece that uses water as foam water while suppressing the amount of water discharged from the pipe.

  Conventionally, foam water has been demanded in ordinary homes and commercial facilities. Foamed water has a gentle touch when washing hands and is a gentle water flow even when washing glass and ceramics, so it is used without fear of damaging the glass and ceramics. In addition, foamed water does not rebound even if it hits glass or ceramics during cleaning, and there is no risk of splashing water or affecting the surrounding environment, so not only ordinary households but also stations and public facilities Widely used such as water faucets and water faucets in laboratory laboratories.

  As a means for generating foamed water in the prior art, a technique of mounting a foamed water generating piece for forming foamed water on a water discharge tap such as a water tap is known. The foamed water generating top in the prior art has, as a basic structure, an air passage for drawing air into the water flow, mixes the air into the discharged water, and covers the mouth of the water discharge basin with a wire mesh. The water to be formed is shredded finely by wiping with a wire mesh, and foamed water is formed by mixing a large number of wire meshes with air while chopping a large number of water.

JP-A-9-095985 JP 2000-104300 A

The foam water generating piece in the prior art has the following problems.
Although the conventional foam water generation | occurrence | production piece was able to form the foam water containing an air bubble, there was nothing which can form the foam water containing a precise and fine air bubble. The foamed water generating piece of the prior art is one that is roughly mixed by touching air from the side at the part where it is mixed with air, and the size of the air bubbles is generally only a few millimeters. In addition, one or a plurality of metal meshes are provided, and the water flow is finely shredded by passing the water flow to assist mixing with air and include air bubbles.

  However, the foamed water generating piece of the prior art is roughly mixed by touching the air from the side at the part where it is mixed with air, and the wire mesh holes are also about several millimeters, and fine air bubbles below that It is not the structure that creates.

  In the prior art method, the first method envisaged as a method of forming fine air bubbles is to increase the contact area between the water flow and the air, but as long as air is supplied from the side of the water pipe. The contact area of air cannot be increased in the horizontal section. When taking a large air contact area in the longitudinal section, the amount of air mixing increases as the so-called waterfall drop increases, just as much air is mixed. There is a problem that it becomes excessively long.

  In the method of the prior art, the second method assumed as a method of forming fine air bubbles is to reduce the size of the mesh of the wire mesh. The resistance of the water flow at the time of passing increases, and the air bubbles originally mixed as large bubbles on the upstream side cannot pass through the wire mesh well, and the air bubbles stay inside the water pipe, There was a possibility that air entrainment might be hindered. In addition, when the mesh of the wire mesh is several millimeters or less, there is a high possibility that a problem of clogging occurs when foreign matter or dust flows in. If the metal mesh is doubled or tripled in order to make the air bubbles in the foamy water fine, dirt and scales tend to accumulate and become clogged. When the metal mesh is clogged, there is a possibility that foam water is not formed and water is usually discharged or water is completely clogged and water is not discharged. In particular, when the water quality is poor or the water has a high hardness, the problem is likely to become obvious.

In addition, in the conventional water-saving top, it passes through a through-hole having a smaller diameter than that of the water discharge pipe, so that the outflow diameter of water is certainly small. There was a problem that the water flow that became strong became so strong that it hindered its use. In other words, there was a risk that the water flow became intense and strong from the small-diameter through hole, and that the water flow became painful when the hand was held over. This is simply a problem that occurs if the structure passes through a through hole having a smaller diameter than that of the water discharge pipe.
If it is a water faucet for ordinary households, it may be so strong that it is unsuitable for washing hands, and if it is a water faucet for laboratories, it may become so strong that it is unsuitable for washing laboratory equipment. It was.

  In view of the above problems, the present invention is to provide a water-saving top that can appropriately control the amount of water discharged from a water discharge pipe such as a water tap and adjust the momentum of the flowing water flow to an appropriate momentum. . In addition, the present invention can generate high-quality foam water that uniformly contains fine air bubbles while appropriately mixing with air inside the water-saving piece and appropriately suppressing the amount of water discharged from the water discharge pipe. An object is to provide a foamed water generating piece.

  In order to achieve the first object of the present invention, the water-saving piece according to the present invention is attached to the outlet of the water discharge pipe in the water-saving piece for mounting and discharging the water discharge pipe, A water-saving top body that obtains a water-saving effect by narrowing the flow cross-sectional area on the outflow side from the cross-sectional area on the inflow side, a first hollow cylindrical body that guides the water squeezed downward by the water-saving top body, and the first A water-saving piece that has a collision control structure that controls so that water flows launched from the main body of the water-saving piece collide with each other, and changes the direction of the water flow collided by the collision control structure downward. is there.

  In the above configuration, for example, the collision control structure includes a reflector that receives water flowing downward in the first hollow cylinder and changes the flow toward the center of the first hollow cylinder. It is preferable that the water whose flow is changed in the central direction by the reflector collide in the vicinity of the center of the first hollow cylinder from a plurality of directions so that the direction of the water flow is changed downward again to flow out. .

  Here, as an example, the shape of the water flow flowing out from the water-saving top body is a cylindrical shape, the reflector is a mortar body inclined toward the center, and the cylindrical shape is squeezed by the water-saving top body. There is an example in which the water flow hits the reflector, the flow changes toward the center of the first hollow cylinder, and collides near the center of the first hollow cylinder.

  As another example, the shape of the water flow flowing out from the water-saving top body is a plurality of columnar shapes, and the reflector is inclined toward the center, and the plurality of columnar shapes flow out from the water-saving top body. The columnar water flow squeezed by the water-saving top body hits the reflector and the flow changes toward the center of the first hollow cylinder, and the first hollow cylinder There is an example of a collision near the center.

With the above configuration, the water flow whose direction has been changed to the center side by the reflector collides vigorously in the air in the first hollow cylindrical body , the momentum is reduced and fine water bubbles are formed, and further mixed with the air in the air cavity. As a result, foamy water is formed.

  Here, an air cavity filled with air through the outside air is provided inside the first hollow cylinder, water is flowed from the water discharge pipe, and the inside of the first hollow cylinder is It is preferable that air remains in the air cavity even in a usage state where a water flow squeezed by the water-saving top body flows.

  The water-saving coma has a structure in which the water flow flowing out from the water-saving coma main body is injected into the air in the air cavity and guided to the reflector through the air cavity, and the water-saving coma with respect to the water flow flowing from the water discharge pipe Through the restriction of the amount of water by the main body and the injection into the air in the air cavity, the change in the flow of the injected water flow toward the center by the reflector, and the collision of the water flow near the center, It is preferable that the mixed state with the air entrained in the water flow is guided in the air cavity to generate water-saving foam water.

  With the above configuration, air always exists in the air cavity even when water is supplied from the water discharge pipe, and the water flow that has changed direction toward the center collides with force in the air in the air cavity. As a result, the momentum is reduced and fine water bubbles are formed, so that foamy water is easily formed.

  According to the water-saving piece of the present invention, the water flow cross-sectional area on the outflow side is narrowed down from the water flow cross-sectional area on the inflow side, and a water flow whose direction is changed to the center side by the reflector is They collide vigorously, the momentum is reduced by the reflector and fine water bubbles are formed, and further mixed with the air in the air cavities to form foam water.

It is a figure which shows the basic composition of the water-saving top 100 of this invention concerning Example 1. FIG. It is a figure which shows the example which decomposed | disassembled the water-saving top 100 of Example 1 into each component. It is the figure which showed simply a mode that the water saving top 100 of this invention was assembled | assembled combining each member. It is the figure which showed the upper part side (AA sectional view) and the lower part (BB sectional view) of the state which assembled the member 101 and the member 102. FIG. It is the figure which showed the mechanism by which foam water is formed when water is poured from the water discharge pipe 200 to the foam water production | generation piece 100 of this invention. It is a figure which shows the basic composition of the water-saving top 100a of this invention concerning Example 2. FIG. It is a figure which shows the example which decomposed | disassembled the water-saving top 100a of Example 2 into each component. It is the figure which showed simply a mode that the water saving top 100a of Example 2 was assembled | assembled combining each member. FIG. 9 is a view showing a cross section of the member 102a. It is the figure which showed the mechanism by which foam water is formed when water is poured from the water discharge pipe 200 to the foam water production | generation piece 100a of this invention.

DESCRIPTION OF SYMBOLS 100,100a Foam water generation | occurrence | production piece 101 Member 102 Member 103 Member 110,110a Water-saving top body 111, 111a Crevice 112 Circulation water flow film 112a Water flow 113 Inner space 114 Outer space 120 First hollow cylinder 121 Air cavity 130 Reflector 140 Ventilation Road 150 Foam water outlet 160 Attachment part 161 Water cavity

  Hereinafter, embodiments of the water-saving top of the present invention will be described with reference to the drawings. However, it goes without saying that the scope of the present invention is not limited to the specific application, shape, number, etc. shown in the following examples.

  Hereinafter, Example 1 is a configuration example of the foamed water generating piece 100 of the present invention, in which the water flow formed by the water-saving piece main body is a substantially cylindrical orbiting water flow film continuously in a circular shape. It was set as the structural example by which the body provided the angle so that the direction of the water flow of a circulating water flow film might change to the center side.

The example of the water-saving top of this invention concerning Example 1 is shown.
FIG. 1 is a diagram illustrating a basic configuration of a water-saving top 100 according to the present invention according to a first embodiment. The water-saving top 100 of the first embodiment is a type of water-saving top that exhibits a water-saving effect and generates foam water.
FIG. 2 is a diagram showing an example in which the water-saving piece 100 of the present invention shown in FIG. 1 is disassembled into each component. In this disassembled example, the water-saving piece 100 is disassembled into three members: a member 101, a member 102, and a member 103. It is an example.
FIG. 3 is a diagram simply showing how the water-saving piece 100 of the present invention is assembled by combining the members.
FIG. 4 is a diagram showing an upper side (cross-sectional view taken along line AA) and a lower side (cross-sectional view taken along line BB) in a state where the member 101 and the member 102 are assembled.
FIG. 5 is a diagram showing a mechanism in which foam water is formed when water is caused to flow from the water discharge pipe 200 to the foam water generation piece 100 of the present invention in the configuration shown in FIG.
1, 2, 3, and 5 are shown as vertical sections so that the internal structure can be easily understood.
In addition, in illustration of FIG.1, FIG.2, FIG.3, FIG. 5, although the foam water production | generation piece 100 becomes a rotary body centering on the vertical axis | shaft, what is not a rotary body is also contained. For example, the conduction hole 141 is not a rotating body, but a plurality of holes formed in the wall surface of the air passage 140 so as to conduct to a sealed space inside the air cavity 121 described later. Further, the bridge portion 1023 is not a rotating body, but has a structure provided in four directions as a bridge connecting a disk body 1021 and a screw body 1022 described later.
Further, the water-saving piece 100 can be disassembled into various members in various ways, and the disassembly example of FIG. 2 and the assembly example of FIG. 3 are merely examples.
As shown in FIG. 1, the water-saving top 100 includes a water-saving top main body 110, a first hollow cylinder 120, an air cavity 121, a reflector 130, an air passage 140, a foam water outflow portion 150, and an attachment portion 160. It has a structure.

  Hereinafter, first, description will be made for each component, and then, water is caused to flow from the water discharge pipe 200 to the foamed water generating piece 100 of the present invention, and air is entrained from the inner surface side into the circulating water flow film 112 formed. The mechanism by which foamed water is formed will be described.

As shown in FIG. 2A, the member 101 is a rotating member having an overall outer shape, and is a cylindrical member having a longitudinal section as shown. An upper cylindrical body 1011, a bowl-shaped body 1012, an upper cylindrical body 1013 that becomes the first hollow cylindrical body 120, and a lower cylindrical body 1014 that becomes the foam water outflow portion 150 are provided.
An outer cylinder 1015 is provided on the outer periphery of the upper cylinder 1013, and a ventilation path 140 is formed as a gap between the upper cylinder 1013 and the outer cylinder 1015. In addition, a plate body 1016 serving as the reflection plate 130 is provided on the inner wall surface of the upper cylinder body 1013 serving as the first hollow cylinder body 120.
In this example, in order to reduce the number of parts, a structure example in which a structure serving as a part of the configuration of a water-saving top body 110 and an air cavity 121 described later is integrated with the member 101 is described.

As shown in FIG. 2B, the member 102 is provided with a disc body 1021 at the center, and a screw body 1022 that is a male screw is provided around the member 1021. A bridge portion 1023 is provided so as to connect the disc body 1021 and the screw body 1022.
In this example, in order to reduce the number of parts, a structure example in which a structure serving as a part of the configuration of an air cavity 121, a reflector 130, and a ventilation path 140, which will be described later, is integrated with the member 102 is formed. Yes.

  The member 103 is a rotating member as shown in FIG. 2C, and is a cylindrical member having a longitudinal section as shown. A hollow disk body 1032 is provided on the cylindrical body 1031 and its bottom surface. An internal thread is provided on the inner wall surface of the cylindrical body 1031, and this becomes an attachment part 160 attached to the outer periphery of the water discharge pipe 200. Further, the hollow disk body 1032 of the member 103 is a structure that locks the bowl-shaped body 1012 of the member 101.

  As shown in FIG. 3A, first, the member 101, the member 102, and the member 103 are assembled. The member 101 is inserted into the member 103, and the flange portion 1012 of the member 101 is a hollow disk body of the member 103. The member 101 is locked to the member 103 and the member 101 is locked to the member 103.

Next, with the member 101 and the member 103 attached, as shown in FIG. 3B, the male screw of the screw portion 1022 of the member 101 is screwed to the female screw on the inner wall surface of the cylindrical body 1031 of the member 103. The member 101 is lowered so that the member 101 is fitted in a predetermined position in the member 102.
The procedure shown in FIG. 1 can be obtained by this procedure.
As described above, the water-saving top 100 can be divided into various parts, and the exploded example in FIG. 2 and the assembled example in FIG. 3 are merely examples.

FIG. 4 shows the upper structure and the lower structure with the member 101 and the member 102 attached.
In a state where the member 102 is attached to the member 101, on the upper side, as shown in FIGS. 4A and 4B, the upper cylindrical body 1011 of the member 101 and the disc body 1021 of the member 102. A gap 111 of the water-saving top body 110 is formed by the gap. The gap 111 is a part of the water flow path in the foam water generating piece 100.

  In the configuration example assembled as described above, each component in the foamed water generating piece 100 of the present invention will be described.

The water-saving top main body 110 is attached to the outlet of the water discharge pipe 200, and obtains a water-saving effect by narrowing the flow cross-sectional area on the outflow side from the cross-sectional area on the inflow side. 111, receives the water flow from the upstream and launches the acceleration water flow from the gap 111 to form the water flow in the air cavity space 20 on the downstream side.
In this configuration example, a water-saving top body 110 is formed by the upper cylindrical body 1011 of the member 101 and the disc body 1021 of the member 102.

  If the width of the gap 111 is smaller than the diameter of the water cavity 161, the amount of water discharged in the gap 111 is reduced, resulting in a water-saving effect. In the foam water generating piece 100 of the present invention, a large amount of air is entrained in the water flow to form foam water having a large air content. The apparent volume of the discharged water increases, and the user's feeling of water use is not reduced.

As shown in FIG. 5 to be described later, in the configuration example of the first embodiment, the water flow launched from the water-saving piece main body 110 is a three-dimensional circulation water flow film continuous in the circulation direction.
As will be described later, when water is flowed from the water discharge pipe 200, the inside of the cylindrical body 1031 of the member 103 is filled with water to become the water cavity 161, but the air cavity 121 formed in the member 102 is water. Even if water is flowed from the discharge pipe 200, it is not filled with water but is always an air cavity filled with air, and the gap 111 of the water-saving top body 110 is used to drive an accelerated water flow from the water cavity 161 to the air cavity 121. A gap 111 is formed.

  It should be noted that the direction of the accelerated water flow launched by the inner wall shape of the gap 111 is determined, and the shape of the circulating water flow film 112 formed by the accelerated water flow is determined. In the configuration example of FIG. 1, the gap 111 of the water-saving top body 110 is formed substantially perpendicular to the depth direction, and as shown in FIG. 5 described later, the formed circulating water film is also a substantially cylindrical water film. It becomes.

Next, the first hollow cylindrical body 120 guides the water squeezed by the water-saving top body 110 downward. In this configuration example, an air cavity 121 is formed inside the first hollow cylindrical body 120. Yes.
The air cavity 121 is a space filled with air provided in the middle of the water flow pipe as a formation place of the circulating water flow film. As will be described later, even when the water flow of the circulating water flow film flows in, the space filled with air is maintained. In this configuration example, the air cavity 121 is a space formed by the inner wall surface of the middle cylindrical body 1013 of the member 101 and the upper surface of the plate body 1016 serving as the reflection plate 130 of the member 101.
In the air cavity 121, a conduction hole 141 of an air passage 140 described later is provided at a position located inside the circular water flow film 112 to be formed, and air is supplied from outside air.

The reflector 130 is disposed so as to receive the circulating water film in the first hollow cylinder 120, and changes the direction of the water flow of the circulating water film, and is an example of a collision control structure.
The collision control structure is to control the water flows launched from the water-saving top body 110 to collide with each other in the first hollow cylindrical body 120. In this configuration example, the reflector 130 has a circulating water flow film at the center. The position and angle are adjusted to change to the side. In this configuration example, the reflector 130 is formed by the plate body 1016 of the member 101, and has a mortar shape inclined toward the center.
For example, the position of the reflector 130 is a position where the upper surface touches the position where the lower end of the circulating water flow film that has been driven downstream contacts, and the angle of the reflector 130 gathers and collides with the contacting circumferential water flow film on the center side. It is such an angle. That is, the water whose flow is changed in the central direction in the first hollow cylinder 120 by the reflector 130 collides with the air cavity 121 from a plurality of directions, and then the foam water outflow that opens in the center of the reflector 130 The structure flows out through the portion 150.

  The air passage 140 is an air passage that conducts the internal space, which is a sealed space in the circulating water flow membrane, and the outside air, and is provided so that the conduction hole 141 is located in the internal space in the circulating water flow membrane. In this configuration example, a ventilation path 140 is formed as a gap between the upper cylindrical body 1013 and the outer cylindrical body 1015, and a plurality of holes opened in the wall surface of the cylindrical body 1022 are the conduction holes 141.

  The foam water outflow portion 150 is a portion that discharges downward the water flow that hits the plate body 130 and collides with the center side, and the foam water flows out from the foam water outflow portion 150. In this configuration example, a foam water outflow portion 150 is formed by the inner wall surface of the middle cylindrical body 1013 of the member 101 and the lower surface of the plate body 1016 of the member 101.

  The attachment part 160 is a member for mounting on a water discharge pipe 200 such as a water tap, and the attachment part 160 includes a joint portion having an inner diameter along the outer diameter of the water discharge pipe 200. In this configuration example, a male screw is provided on the outer periphery of the water discharge pipe 200 of the water faucet, and a female screw is provided on the inner periphery of the joint portion of the attachment part 160. It is sealed so that water does not leak even when an assumed water pressure is applied. The attachment unit 160 is a part that receives water discharged from the water discharge pipe 200 such as a water tap first. In this example, a configuration example is provided in which a water cavity 161 filled with water is provided inside the joint portion of the attachment unit 160. Moreover, the attachment part 160 becomes a cylinder surrounding the water-saving top body 110 inside.

  In this configuration example, the hollow portion of the cylindrical body 1031 of the member 103 is a water cavity 161, and the female screw provided on the inner peripheral wall surface of the cylindrical body 1031 is screwed with the male screw on the outer periphery of the water discharge pipe 200. It is a mating female screw.

  Next, the foam water production | generation means formed in the foam water production | generation piece 100 is demonstrated. The foam water generation means reduces the air pressure at a location where the sealed space is expanded by changing the direction of the water flow of the circulating water flow membrane, and generates foam water by entraining air at once in the circulating water flow membrane at the location. The mechanism by which the foam water is generated by the foam water generation means will be described.

  FIG. 5 is a diagram illustrating a state in which a water flow is caused to flow from the water discharge pipe 200 to the foamed water generating piece 100 illustrated in FIG. 1. As in FIG. 1, the internal water flow is shown in a vertical cross section so that it can be easily understood. The flow of water flow, the flow of air, and the foamed water formed are shown typically.

The water discharged from the water discharge pipe 200 to the water cavity 161 is received by the upper surface of the water-saving top body 110, but is guided downward from the gap 111 by water pressure.
Since the width of the gap 111 serving as a passage for the water flow is narrower than the width of the water cavity 161, the water is accelerated and rushed into the air cavity 121 when passing through the gap 111. Here, the gap 111 is substantially cylindrical. Therefore, the shape of the accelerated water flow that is driven out from the gap 111 and is driven into the air cavity 121 is driven as a cylindrical three-dimensional circular water flow film 112 that is continuous in the circular direction.

  In this example, the circulating water flow film is continuous in the circumferential direction, and therefore, in the air cavity 121, the sealed space 113 inside the circulating water flow film 112 and the outer space 114 are blocked by the water flow film. It has become. Thus, the inner space 113 of the circulating water flow film 112 is an airtight space that is maintained airtight and filled with air. The outer space 114 of the circulating water flow film 112 is also filled with air.

In this configuration example, as shown in FIGS. 5A and 5B, the reflector 130 is disposed on the lower surface of the circulating water film 112, and the water flow of the circulating water film 112 hits the reflector 130. When in contact with each other, the direction of the water flow is changed to the center side, and the water flows whose directions are changed from the surroundings gather on the center side of the air cavity 121 and collide with each other. The water current strikes the reflector 130 and is reflected vigorously, and further collides with the center, so that the water mass is finely blown off and changes into fine water bubbles.
In this way, the water flow flowing out from the water-saving top body 110 is jetted into the air in the air cavity 121 and guided to the reflector 130, thereby being jetted into the air inside the air cavity and jetted. Through the change in the flow of the water flow toward the center by the reflector 10 and the collision of the water flows, a mixed state of the water flow and the air is guided in the air cavity to generate water-saving foam water. That is, the water flow becomes fine water bubbles, and foam water is formed.

In the configuration example of Example 1, the point that finer water bubbles are formed will be described below.
As described above, the circulating water flow film 112 is launched from the water-saving top body 110, and the place where the circulating water flow film 112 abuts on the reflector 130 gathers by changing the flow to the inner space 113 side. It can be said that the external space 114 which is a sealed space expands. Therefore, the changing pressure of the flow of the circulating water flow film 112 acts in the direction in which the volume expands in the external space 114, and the atmospheric pressure in the external space 114 decreases near the reflector 130.

  That is, the air facing the circulating water flow film 112 is entrained by the accelerating water flow launched from the gap 111 vigorously downstream, but as shown in FIG. Air is drawn into the circulating water flow film 112 at a location where the generated water flow of the circulating water flow film 112 abuts on the reflector 130, and becomes foamy water containing a large amount of air. Since air is driven from the inner surface into the circular water flow film in a state of spreading in a thin film shape, an effect that air bubbles are uniformly diffused in the water flow film is obtained. As a result, high-quality foam water can be generated.

  Here, since the conduction hole 141 is provided in the outer space 114 of the circulating water flow membrane 112, when the atmospheric pressure in the outer space 114 decreases, the pressure in the vicinity of the conduction hole 141 also decreases. The outside air is supplied via 141.

  In the conventional foam water generation mechanism, there is no such thing as an air cavity, and in many cases, air is entrained from a conduction hole provided in the wall surface of a water flow pipe filled with water flow. The generation top 100 is provided with an air cavity 121 that is filled with air without being filled with water even when a water flow flows, and a circulating water flow film 112 is formed in the air cavity 121, and the circulating water flow film 112 is further formed. This is a new idea technology in which the flow direction is changed to the center side by the action of the reflector 130 and the circulating water flow films 112 collide violently.

  Further, in the configuration example of the first embodiment, in addition to the idea of the present invention described above, an outer space which is an airtight space is formed by forming a sealed space in which airtightness is maintained by a water film and changing the direction of the circulating water flow film. 114 is combined with a new concept technology that causes a pressure drop of 114, and vigorously drives air into a thin water flow film by the pressure drop. Since air is driven from the inside into water that is spread in a thin film form in a space filled with air, it is possible to generate foam water with high air content and high quality.

As the speed of the accelerated water flow increases, the speed of the circulating water flow films 112 gathering in the center in the air cavity 121 increases. However, since the circulating water flow films 112 collide with each other, the speed is eventually reduced and the foam water is discharged. From the part 150, it discharges | emits as a gentle water flow.
That is, the foam water formed by colliding with each other flows out from the foam water outflow portion 150. In addition, the effect (speed adjustment effect) that the speed of the water flow film in the accelerated state is weakened to an appropriate speed for hand washing and guided to the downstream side by the collision of the water flows in the air cavity 121 is obtained. The speed of the foam water to be discharged is adjusted.

Further, as the speed of the accelerated water flow increases, the pressure drop due to the direction change of the circulating water flow film increases, so the speed of the air driven into the water flow film also increases and the mixing with the air is further promoted. In addition, the air driven into the inside from the side of the accelerated water flow diffuses into the water flow and becomes uniform and fine air bubbles.
In this way, originally, as a result of increasing the water-saving efficiency in the water-saving top body 110, a strong momentum of the accelerated water flow is formed, and if it is discharged as it is, the water pressure flow is painful for the user. In the water-saving top 100, the momentum is always moderately reduced, and it is possible to change the quality into high-quality foam water.

  In addition, as shown to Fig.5 (a), although the foam water produced | generated within sealed space flows out from the foam water outflow part 150 which is opening of the clearance gap between the reflectors 130 of the said sealed space lower part, foam water If the position, shape, and area of the outflow part 150 are appropriate, the foamed water outflow part 150 flows out in a state occupied by the entire surface, and the outside air does not enter the sealed space through the foamed water outflow part 150, and the sealed space Is not directly connected to the outside air. As described above, the sealed space and the outside air are not directly connected to each other through the foam water outflow portion 150, so that the airtightness inside the sealed space can be maintained while the foam water flows out from the sealed space.

As described above, according to the foam water generating piece 100 of the first embodiment, the acceleration water flow launched from the water-saving piece main body 110 is changed to the central side by the reflector 130, and the water flows near the center of the air cavity 121 filled with air. By colliding each other, foam water can be formed as fine water bubbles while reducing the momentum of the water flow.
Furthermore, according to the foamed water generating piece 100 of the first embodiment, the acceleration water flow launched from the water-saving piece main body 110 is formed into a circular circulation water film 112 having a continuous circular shape in the air cavity 121 filled with air. The inner space 113 and the outer space 114 that are kept airtight are formed, and the flow of the circulating water flow film 112 is reduced by the change in the direction of the reflector 130 to reduce the atmospheric pressure of the outer space 114, and the direction of the water flow film by the reflector 150. Using the pressure of the change, air can be driven into the circulating water flow film 112 to generate high-quality foam water.

  In the water-saving piece 100a of Example 2, the shape of the gap of the water-saving piece main body 110 is a plurality of holes, the formed accelerated water flow is a plurality of water flows, and the plurality of water flows are directed toward the center by the reflector. It is an example of a configuration that is changed and collides.

The example of the water-saving top 100a of this invention concerning Example 2 is shown.
FIG. 6 is a diagram illustrating a basic configuration of a water-saving piece 100a according to the second embodiment of the present invention.
FIG. 7 is a diagram showing an example in which the water-saving piece 100a of the present invention shown in FIG. 6 is disassembled into each component part. In this disassembled example, the member 101, the member 102a, and the member 103 are disassembled. It is an example. Compared to the members 101 to 103 shown in the first embodiment, only the member 102 is a member 102a.
FIG. 8 is a diagram simply showing how the water-saving piece 100a of Example 2 is assembled by combining the members.
FIG. 9 is a view showing a cross section of the member 102a.
FIG. 10 is a diagram showing a mechanism in which foam water is formed when water is caused to flow from the water discharge pipe 200 to the foam water generation piece 100a of the present invention in the configuration shown in FIG.
6, 7, 8, and 10 are shown as vertical sections so that the internal structure can be easily understood.

In addition, in the illustration of FIG.6, FIG.7, FIG.8, FIG. 10, although the foam water production | generation piece 100a is a rotary body centering on the vertical axis | shaft, the point which is not a rotary body is also included. Similar to Example 1.
Further, the water-saving piece 100 can be divided into various members in various ways, and the disassembled example in FIG. 7 and the assembled example in FIG.

  As shown in FIG. 6, the water-saving piece 100a of Example 2 includes a water-saving piece main body 110a, a first hollow cylinder 120, an air cavity 121, a reflector 130, an air passage 140, a foam water outflow portion 150, and an attachment portion. The structure of the water-saving top body 110a is different from that of the first embodiment.

  Hereinafter, first, each component will be described, and then, water is caused to flow from the water discharge pipe 200 to the foamed water generating piece 100a of the present invention, and air is entrained from the inner surface side with respect to the formed circulating water flow film. The mechanism by which foamed water is formed will be described.

As shown in FIG. 7A, the member 101 is a rotating member having an overall outer shape, and is a cylindrical member having a longitudinal section as shown. An upper cylindrical body 1011, a bowl-shaped body 1012, an upper cylindrical body 1013 serving as a first hollow cylindrical body 120, and a lower cylindrical body 1014 serving as a foam water outflow portion 150 are provided, and an outer cylindrical body is provided on the outer periphery of the upper cylindrical body 1013. 1015 is provided, and a ventilation path 140 is formed as a gap between the upper cylinder body 1013 and the outer cylinder body 1015. In addition, a plate body 1016 serving as the reflection plate 130 is provided on the inner wall surface of the upper cylinder body 1013 serving as the first hollow cylinder body 120. These are the same as those shown in the first embodiment.
In this example, in order to reduce the number of parts, a structure example in which a structure serving as a part of the configuration of a water-saving top body 110 and an air cavity 121 described later is integrated with the member 101 is described.

As shown in FIG. 7B, the member 102a is provided with a disc body 1021a at the center, and a screw body 1022a that is a male screw is provided around the member 102a. FIG. 9 shows a cross-sectional structure of the member 102a. As shown in FIG. 9, the disc body 1021a is provided with at least one through hole 111a penetrating from its upper surface to its bottom surface. In this configuration example, eight through holes 111a are provided. The diameters of these through holes 11 are smaller than the diameter of the water discharge pipe 200.
In this example, in order to reduce the number of parts, a structure example is formed in which a member that is a part of the configuration of an air cavity 121, a reflector 130, and a ventilation path 140, which will be described later, is integrated with the member 102a. Yes.

  The member 103 is a rotating member as shown in FIG. 7C, and is a cylindrical member having a longitudinal section as shown. A hollow disk body 1032 is provided on the cylindrical body 1031 and its bottom surface. An internal thread is provided on the inner wall surface of the cylindrical body 1031, and this becomes an attachment part 160 attached to the outer periphery of the water discharge pipe 200. Further, the hollow disk body 1032 of the member 103 is a structure that locks the bowl-shaped body 1012 of the member 101. These are the same as those shown in the first embodiment.

Assembling these members 101, 102, and 103, first, as shown in FIG. 8A, the member 101 is inserted into the member 103, and the flange portion 1012 of the member 101 is a hollow disk body of the member 103. The member 101 is locked to the member 103 and the member 101 is locked to the member 103.
Next, with the member 101 and the member 103 attached, as shown in FIG. 8B, the male screw of the screw portion 1022 of the member 102 a is screwed to the female screw on the inner wall surface of the cylindrical body 1031 of the member 103. The member 101 is lowered so that the member 101 is fitted in a predetermined position in the member 102a. With this procedure, the state of FIG. 6 can be obtained.
As described above, the water-saving piece 100 can be disassembled into various members in various ways, and the disassembled example in FIG. 7 and the assembled example in FIG. 8 are merely examples.

  In the configuration example assembled as described above, each component in the foamed water generating piece 100a of the second embodiment will be described.

The water-saving top body 110a is provided with a gap 111a serving as a passage for the water flow therein, and receives the water flow from the upstream and launches an accelerated water flow from the gap 111a to form a water flow in the air cavity space 20 on the downstream side. . In the configuration example of the second embodiment, a plurality of holes are formed, and the water flow launched from the water-saving top body 110a is a water flow of a plurality of pillars.
As shown in FIG. 9, the water-saving top body 110a includes a gap 111a that is at least one through-hole penetrating from the top surface to the bottom surface. In this configuration example, eight through holes 111a are provided, and eventually eight accelerated water flows are launched.

  In this structural example, the gap 111a, which is a through hole, is a hole drilled in the vertical direction, and the water flow is shaped to strike the air cavity 121 vertically, but the flowing water flow hits the reflector 130. If so, the gap 111 a that is a through-hole may be formed at an angle such that an angled water flow is launched into the air cavity 121.

  As will be described later, when water is caused to flow from the water discharge pipe 200, the inside of the tubular body 1031 of the member 103 is filled with water to become the water cavity 161, but the air cavity 121 formed in the member 102a Even if water flows from the discharge pipe 200, it is not filled with water but is always an air cavity filled with air, and the gap 111a of the water-saving top body 110 is used to drive an accelerated water flow from the water cavity 161 to the air cavity 121. A gap 111a is formed.

  In addition, a water-saving effect is also obtained by the water-saving top body 110. If the area of the gap 111a is smaller than the diameter of the water cavity 161, the amount of water discharged in the gap 111a is reduced, resulting in a water-saving effect. In addition, in the foam water generation | occurrence | production piece 100a of this invention, by enclosing a large amount of air in a water flow and forming foam water with big air content, it is from the foam water production | generation piece 100a of this invention with respect to actual water quantity. The apparent volume of the discharged water increases, and the user's feeling of water use is not reduced.

  The first hollow cylinder 120, the air cavity 121, the reflector 130, the air passage 140, the conduction hole 141, the foam water outflow portion 150, and the attachment portion 160 are the same as those in the first embodiment, and the description thereof is omitted here. .

  In addition, since the water flow was a circular water flow film in Example 1, the reflector 130 was also in a mortar shape that was continuous in the circular direction. However, in this Example 2, the water flow is a plurality of water flows. The reflector 130 of Example 2 may be a mortar-like one that is continuous in the circumferential direction, but may be one in which inclined bodies corresponding to the position and angle of each water flow are individually provided.

Next, the foam water production | generation means formed in the foam water production | generation piece 100a is demonstrated.
FIG. 10 is a diagram showing a state in which a water flow is made to flow from the water discharge pipe 200 to the foamed water generating piece 100a shown in FIG. As in FIG. 6, the internal water flow is shown in a vertical cross section so that it can be easily understood. The flow of water flow, the flow of air, and the foamed water formed are shown typically.

The water discharged from the water discharge pipe 200 to the water cavity 161 is received by the upper surface of the water-saving top body 110a, but is guided downward from the gap 111a by water pressure.
Since the width of the gap 111a serving as a path for water flow is narrower than the width of the water cavity 161, the water is accelerated and rushed into the air cavity 121 when passing through the gap 111a. Here, the gap 111a has eight penetrations. Since it is a hole, the shape of the accelerating water flow that is launched from the gap 111a and is driven into the air cavity 121 is launched as 8 water streams.

In this configuration example, as shown in FIGS. 10A and 10B, the reflector 130 is disposed on the lower surface of the water flow 112a. When the water flow 112a contacts the reflector 130, the direction of the water flow 112a is set. Changes to the center.
That is, on the central side of the air cavity 121, water flows 112a whose directions are changed from the surroundings gather and collide with each other. The water current strikes the reflector 130 and is reflected vigorously, and further collides with the center, so that the water mass is finely blown off and changes into fine water bubbles.
In this way, the water flow becomes fine bubbles near the center of the air cavity 121, and foam water is formed.

  In this example, when the generated foam water is discharged from the foam water outflow portion 150, the entire foam water outflow portion 150 is discharged and air corresponding to the amount of foam water discharged is vented. It will be drawn into the air cavity 121 through the path 140. The drawn air is drawn in along the water flow 112 a that is pushed out downward from the gap 111 a, or a part of the air passes through the columnar water flow 112 a and is supplied to the center side of the air cavity 121. Foam water is formed by being caught in the collision between the members 112a or being caught in water discharged from the foam water outflow portion 150.

  Note that the conventional foam water generation mechanism is not like an air cavity, and air is often drawn from a conduction hole provided in the wall surface of a water flow pipe filled with a water flow. The foamed water generating piece 100 is provided with an air cavity 121 that is filled with air without being filled with water even when a water flow flows, and in the air cavity 121, the direction of the flow of water 112 a is caused by the action of the reflector 130. It is a new idea technology that the water flow 112a collides violently.

As the speed of the accelerated water flow increases, the speed of the water flow 112a gathering in the center in the air cavity 121 also increases. However, since the water flows 112a collide with each other, the speed is eventually reduced, and the foam water discharge unit 150 Discharged as a gentle stream.
That is, the foam water formed by colliding with each other flows out from the foam water outflow portion 150. In addition, the effect (speed adjustment effect) that the speed of the water flow film in the accelerated state is weakened to an appropriate speed for hand washing and guided to the downstream side by the collision of the water flows in the air cavity 121 is obtained. The speed of the foam water to be discharged is adjusted.

  In this way, originally, as a result of increasing the water-saving efficiency in the water-saving top body 110, a strong momentum of the accelerated water flow is formed, and if it is discharged as it is, the water pressure flow is painful for the user. In the water-saving top 100, the momentum is always moderately reduced, and it is possible to change the quality into high-quality foam water.

  As described above, according to the foamed water generating piece 100a of the second embodiment, the accelerating water flow launched from the water-saving piece main body 110a is changed to the central side by the reflector 130, and the water flow is near the center of the air cavity 121 filled with air. By colliding each other, foam water can be formed as fine water bubbles while reducing the momentum of the water flow.

  While preferred embodiments of the invention have been illustrated and described, it will be appreciated that various changes can be made without departing from the scope of the invention. Therefore, the technical scope of the present invention is limited only by the description of the appended claims.

  The present invention can be widely applied as a water-saving piece of a water discharge pipe for discharging water. Further, it can be widely applied as a water-saving piece for generating foamed water in a water discharge pipe. For example, water faucets (not only general water faucets but also various water faucets such as water faucets for laboratories), shower heads (various shower heads for baths, gardening, etc.), special water The present invention can be applied to a variety of discharge pipes (for example, water discharge pipes for washing eyes in a pool or the like).

Claims (4)

In the water-saving top for suppressing the amount of water discharged from the water discharge pipe,
A water-saving top body attached to the outlet of the water discharge pipe, and obtaining a water-saving effect by narrowing the water flow cross-sectional area on the outflow side from the water flow cross-sectional area on the inflow side,
The shape of the water flow squeezed by the water- saving top body is cylindrical, and a first hollow cylinder that guides the water flow downward,
A mortar-shaped reflector inclined toward the center, which receives water flowing downward in the first hollow cylinder and changes the flow toward the center of the first hollow cylinder, A collision control structure for controlling the water whose flow has changed in the direction to collide near the center of the first hollow cylinder from a plurality of directions ,
The water-saving top which changes the direction of the water flow which collided by the said collision control structure, and makes it flow out downward. The shape of the water flow flowing out from the water-saving top body is a plurality of columnar shapes, the reflector is inclined toward the center, and is an inclined body corresponding to the plurality of columnar shapes flowing out from the water-saving top body, The columnar water flow squeezed by the water-saving top body hits the reflector, the flow changes near the center of the first hollow cylinder, and collides near the center of the first hollow cylinder. The water-saving top according to claim 1 . An air cavity filled with air through the outside air is provided inside the first hollow cylindrical body, water is flowed from the water discharge pipe, and the water-saving top body is provided inside the first hollow cylindrical body. 3. The water-saving top according to claim 1, wherein air continues to remain in the air cavity even in a use state in which a squeezed water flow is flowing. The water flow flowing out from the water-saving top body is injected into the air in the air cavity, and is guided to the reflector through the air cavity.
With respect to the water flow flowing from the water discharge pipe, the amount of water reduced by the water-saving coma main body, the injection into the air in the air cavity, and the change of the flow of the injected water flow toward the center by the reflector The water-saving top according to claim 3 , wherein a water-contained foam water is generated by guiding a mixed state with air entrained in the water flow in the air cavity through collision of the water flow near the center.

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