JP2010188046A - Shower device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shower device uniformly discharge water with uniform air bubbles from a spray face. <P>SOLUTION: The shower device includes: a water supply passage for passing water; a throttling part which is arranged in the water supply passage, reduces a water flow passage cross sectional area and discharges water; an air mixing part which is arranged downstream of the throttling part and mixes air with the discharged water; and a spray part which is arranged downstream of the air mixing part and has a plurality of spray holes for discharging air-containing water being the water containing air. The throttling part is arranged so as to discharge water along a face with the spray holes arranged therein. The spray part includes an interface control part between the air mixing part and the plurality of spray holes. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shower device, and more particularly to a shower device that discharges water containing bubbles.

  So far, a shower device has been proposed in which bubbles are mixed in water to improve the texture of the shower and save water.

  For example, in Patent Document 1, a shower head includes a housing, a disk from which a jet exits, a disk having a number of holes from which the jet exits, a water inlet for allowing water to enter the housing, and a shower head. A shower head is disclosed, characterized in that it includes an air entrainer for entraining air into flowing water. Patent Document 2 proposes a shower nozzle in which air is mixed into shower water discharge, and can discharge hot water simultaneously with the operation of a water stop cock.

Special table No. 2006-509629 Japanese Patent No. 3747323

About the shower apparatus which mixed air with shower water discharge, the water containing a bubble may not be discharged uniformly from a watering surface by the pressure loss in a watering part with a conventional type.
For this reason, this invention provides the shower apparatus which can discharge uniformly the water which has a uniform bubble from a water spray surface.

  According to one aspect of the present invention, a water supply channel through which water passes, a throttle unit that is provided in the water supply channel, discharges the water while reducing a cross-sectional area of the water channel, and provided downstream of the throttle unit. An air mixing part that mixes air into the discharged water, and a watering part that is provided downstream of the air mixing part and has a plurality of watering holes for discharging air-containing water that is water containing the air And the throttle portion is disposed so as to discharge the water along a surface on which the plurality of water spray holes are arranged, and between the air mixing portion and the plurality of water spray holes of the water spray portion. There is provided a shower apparatus characterized by comprising an interface controller.

  ADVANTAGE OF THE INVENTION According to this invention, the shower apparatus which can discharge uniformly the water which has a uniform bubble from a water spray surface is provided.

It is a schematic diagram which illustrates the shower apparatus 1 which concerns on embodiment of this invention. It is a schematic cross section showing shower device 100 concerning comparative example 1 contrasted with this embodiment. It is the photograph showing the water discharge aspect from the water spray hole 4p. 10 is a schematic diagram illustrating a shower apparatus 101 according to Comparative Example 2. FIG. It is the photograph showing the condition in the water sprinkling part 4 at the time of using the shower apparatus 101 which concerns on the comparative example 2, and the water discharge aspect from the water sprinkling hole 4p. It is the model graph showing the relationship between the distance from the watering board 4b, and the particle size of the water discharged from the watering hole 4p. It is a schematic diagram showing the radial type shower apparatus 1B which has the same component as the shower apparatus 1 which concerns on this embodiment. It is the photograph showing the condition in the water sprinkling part 4 at the time of using the shower apparatus 1B based on this embodiment represented to FIG. 7, and the water discharge aspect from the water sprinkling hole 4p. It is a model side view which illustrates the injection port 2a. It is a schematic cross section which illustrates the injection port 2a. It is a schematic cross section which illustrates the injection port 2a. 3 is a schematic view illustrating the configuration of the shower device 1. FIG. 6 is a schematic view illustrating another configuration of the shower device 1. FIG. 3 is a schematic cross-sectional view illustrating an interface control unit 5. FIG. 3 is a schematic cross-sectional view illustrating an interface control unit 5. FIG.

The first invention is a water supply channel for passing water,
A throttling portion provided in the water supply channel, for reducing the flow channel cross-sectional area of the water and discharging the water;
An air mixing part provided on the downstream side of the throttle part, for mixing air into the discharged water;
A sprinkling portion provided on the downstream side of the aeration unit and having a plurality of sprinkling holes for discharging air-containing water, which is water containing the air, wherein the throttling portion includes the plurality of sprinkling holes. The shower device is disposed so as to discharge the water along the surface, and includes an interface control unit between the air mixing unit and the plurality of water spray holes of the water spray unit.
According to this shower device, by discharging water from the throttle portion along the water spray portion, the kinetic energy of the water discharged from the throttle portion can be used efficiently, and the bubble water can easily flow out of the water spray portion. Further, since the position where the gas-liquid interface is generated can be controlled, the amount of air mixing can be optimally controlled. Accordingly, the shower particle size and flow velocity can be increased simultaneously even with a small flow rate, and thus a shower device capable of providing a shower with a good texture is provided.

According to a second invention, in the first invention, the cross-sectional area of the opening, which is the narrowest part formed by the interface controller and the water sprinkler, is downstream of the interface controller in the internal space of the water sprayer. It is a shower apparatus characterized by being smaller than the cross-sectional area of internal space located in this.
According to this shower device, an interface can be generated between the interface controller and the water spray holes. Thereby, since the inside of the water sprinkling part downstream from the interface is filled with bubble water, it is possible to discharge the bubble water uniformly from all the water spray holes provided downstream from the interface.

According to a third invention, in the first or second invention, the throttle portion includes an opening for discharging the water, and the opening is arranged so that the opening is positioned on a straight line in the water discharge direction of the opening. This is a shower device.
According to this shower device, the loss of kinetic energy of the water discharged from the throttle portion is small, and the contact area between the water and air can be appropriately ensured, so that the air mixing rate can be increased.

A fourth invention is the shower apparatus according to any one of the first to third inventions, wherein the throttle portion has a plurality of openings for discharging the water.
According to this shower apparatus, water can be discharged in various modes in the watering part. By having multiple openings, the water discharged from the throttle part is easily rectified, so the bubble water in the sprinkling part is also easily rectified, and there is less stagnation / combination of bubbles and generation of vortices, and the bubble water is uniform in the sprinkling part To be distributed. Further, when the cross-sectional area of the single opening and the cross-sectional area of the plurality of openings are made the same, and the surface area of the water discharged from the throttle part is compared, the water discharged from the plurality of openings has a large surface area, This increases the contact area of the air and makes it easier to draw air. Thereby, a large amount of air can be mixed even with a small flow rate, and the bubble water can be efficiently discharged from the water spray holes. Furthermore, increasing the amount of air to be drawn in means that the force to prevent the backflow from the water sprinkling part to the aeration part increases, so that the particle size and flow velocity of the shower can be increased simultaneously, Provided is a shower device that can provide a shower with a good texture.

According to a fifth invention, in any one of the first to fourth inventions, the throttle portion includes an opening for discharging the water, and the opening is arranged so that water discharged to the opening is uniform. This is a shower device.
According to this shower device, since the air drawn in by the discharged water flows uniformly into the opening, the force with which the drawn-in air pushes the interface is also uniform with respect to the interface, thereby preventing backflow of water more efficiently. Therefore, it is possible to provide a shower apparatus that can further increase the flow velocity of the shower and obtain a shower with a good texture.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic view illustrating a shower device 1 according to an embodiment of the invention. 1A is a schematic perspective sectional view thereof, FIG. 1B is a schematic perspective view when viewed from the bottom side of the schematic perspective sectional view of FIG. 1A, and FIG. 1 is a schematic diagram conceptually showing a cross-sectional structure.

  The shower apparatus 1 is provided in a water supply channel S through which water passes and a water supply channel S (in FIG. 1, the downstream end of the water supply channel S), and a throttle unit that discharges water by reducing the cross-sectional area of the water channel. 2, an air mixing unit 3 that is provided downstream of the throttle unit 2 and mixes air into the water discharged from the throttle unit 2, and is provided downstream of the air mixing unit 3 and contains water. A water sprinkling part 4 having a plurality of water sprinkling holes 4p for discharging air-containing water (bubble water) 200. The throttle unit 2 has an opening (a jet port 2a) and discharges water from the jet port 2a. The air mixing part 3 has an opening 3a, and mixes the air introduced from the opening 3a into the water (arrow A) discharged from the throttle part 2 (arrow B). The watering part 4 has a watering plate 4b having a plurality of watering holes 4p. The thickness W of the inner space of the sprinkling part 4 can be set so as to have a difference of about 1 mm to about several mm vertically (in the direction of the thickness W) with respect to the diameter or width of the injection port 2a. . For example, when the diameter of the injection port 2a is about 1 mm, the thickness W of the internal space of the sprinkling part 4 can be about 2 to 3 mm.

And the throttle part 2 discharges water along the surface (watering surface 4a) on which the plurality of watering holes 4p are arranged.
Here, “discharging along the watering surface 4a” means discharging along the watering surface 4a immediately above all or part of the watering surface 4a, and separating from all or part of the watering surface 4a. It also includes discharging in a region substantially parallel to the water spray surface 4a. Further, the direction of water discharge does not have to be strictly parallel to the water spray surface 4a, and as will be described later with reference to FIGS. 10 and 14, those inclined with respect to the water spray surface 4a are also included in the scope of the present invention. Is done.

In a state where water is supplied to the water supply channel S and the shower flow is discharged from the sprinkling unit 4, an interface 4 s where gas and liquid are mixed is formed between the interface control unit 5 and the sprinkling unit 4. Here, the process of forming the interface 4s will be described with reference to FIG.
The water flow discharged from the injection port 2 a passes through the interface control unit 5 and enters the sprinkling unit 4 in a state opened to the atmosphere. At this time, since the area of the sprinkling hole 4p provided in the sprinkling part 4 is smaller than the cross-sectional area of the internal space of the sprinkling part 4, the water discharge flow rate from the sprinkling hole 4p is increased. Therefore, the internal pressure of the water in the inner space of the sprinkling unit 4 is increased, and the water stored in the inner space of the sprinkling unit 4 flows back toward the interface control unit 5 having a larger flow path and less pressure loss. try to. On the other hand, since air drawn in by the kinetic energy of the water discharged from the injection port 2a flows into the opening formed by the interface control unit 5 and the water sprinkling unit 4 in the air mixing unit, the interface control unit 5 and the water spraying unit 4 In the meantime, the effect of the air pressing the water stored in the internal space of the water sprinkling unit 4 occurs. Hereinafter, this effect is referred to as a “shield effect”.
Between the interface controller 5 and the sprinkler 4, the water that is going to flow backward from the sprinkler 4 due to the internal pressure of the sprinkler 4 is pressed by the shielding effect, and the interface 4 s is formed at a position where these forces are balanced. Become. That is, by providing the interface control unit 5, the magnitude of the shielding effect can be controlled, and an interface can be formed between the interface control unit and the water spray holes. Further, with the interface 4s as a boundary, the aeration unit 3 side is in a state in which water from the throttle unit 2 is opened to the atmosphere, and the water sprinkling unit 4 side is water from the throttle unit 2 and air drawn thereby. Are mixed and bubble water 200 is present. That is, the water from the throttle portion 2 and the air drawn by the kinetic energy of the water collide with the interface 4s, so that the gas-liquid is mixed and the bubble water 200 is formed.

Next, the production | generation effect | action of bubble water in the shower apparatus of this embodiment is demonstrated, referring FIGS.
FIG. 2 is a schematic cross-sectional view showing the shower apparatus 100 according to the comparative example 1 compared with the present embodiment.
As shown in FIG. 2, the shower device 100 according to the comparative example 1 has similar components to the shower device 1 according to the present embodiment, but the water discharged from the throttle unit 2 is along the water spray surface 4 a. Will not be discharged. That is, the water introduced into the water supply channel S and discharged from the throttle unit 2 (arrow A) first proceeds in a direction perpendicular to the water spray surface 4a and takes in air in the air mixing unit 3 (arrow B). Thereafter, the flow direction of the slope 50 changes in a direction along the water spray surface 4a.

  In such a configuration, the bubble water collides with the slope 50 to reduce the kinetic energy. For this reason, the flow rate of bubble water may not be ensured appropriately in the sprinkling part 4. As a result, as the water sprinkling part 4 moves toward the downstream side, the bubbles grow by being combined with each other and stagnant. As a result, bubbles can be accumulated, and the bubble water may not efficiently flow out of the spray holes 4p when the bubble diameter is larger than the diameter of the spray holes 4p. That is, on the downstream side of the water sprinkling unit 4, water that does not sufficiently contain bubbles is discharged.

FIG. 3 is a photograph showing the mode of water discharge from the sprinkling holes 4p. That is, these photographs show a state in which a shower flow is discharged from the watering hole 4p of the watering part 4 in the direction of the arrow.
FIG. 3A shows a water discharge mode when water containing bubbles (bubble water 200) is discharged. It can be seen that the water 200 discharged from the sprinkling holes 4p is granular, and bubbles are mixed in each particle. In this way, when bubbles are mixed, the bubble water 200 tends to be granular after water discharge, and becomes larger than the water discharge without bubbles. It is considered that such particles can be generated by the action of bubbles in addition to the shearing force of air. When the size is increased, a good stimulus and texture can be obtained when the shower hits the body surface. Furthermore, since air is added to the flow rate of water by mixing air, the flow rate of the particles after water discharge increases. That is, by mixing air, the particle size is increased even with a small amount of water, and the flow velocity is also increased, so that the kinetic energy of the particles is increased, and thereby a sufficient “feeling of contact” can be obtained.

On the other hand, FIG.3 (b) represents the water discharge aspect when the water which does not contain a bubble is discharged. When bubbles are not included, the water is less likely to be granular after water discharge, and a continuous water flow is considered to be granulated by the shearing force of air. This particle diameter is proportional to the hole diameter of the sprinkling holes 4p, and the size of the particle diameter can be almost predicted by the hole diameter. It has been found that this particle size is smaller than water discharge containing bubbles.
In this way, since the particle size is smaller than that of shower water containing bubbles, the feeling of stimulation and texture when the shower hits the body surface is poor. It must be increased, the flow rate increased, and the kinetic energy increased.

In the shower device 100 according to the comparative example 1, bubbles are unlikely to be included particularly in the sprinkling holes 4p on the downstream side of the sprinkling section 4, and water is easily discharged in the mode shown in FIG. For this reason, it is difficult to obtain a good texture.
On the other hand, according to the present embodiment, as described above with reference to FIG. 1, the throttle unit 2 discharges water along the water spray surface 4a. That is, the water discharged from the throttle unit 2 does not collide with a wall or the like, and flows through the inner space of the water spray unit 4 substantially parallel to the water spray surface 4a. As a result, a decrease in the flow rate of the water 200 is also suppressed downstream of the water sprinkling unit 4, and the water 200 is discharged from the water sprinkling holes 4p with air bubbles mixed therein. That is, according to the present embodiment, in order to discharge water containing bubbles on both the upstream side and the downstream side of the water sprinkling unit 4, large granular water discharge is formed as shown in FIG. Can do. As a result, even with a small amount of water, it is possible to obtain sufficient stimulation and “feeling of hitting”.

Hereinafter, the experimental result by the other comparative example (comparative example 2) contrasted with this embodiment is demonstrated, referring FIGS. 4-6.
FIG. 4 is a schematic diagram illustrating the shower apparatus 101 according to the second comparative example. 4A is a schematic perspective sectional view, FIG. 4B is a schematic sectional view, and FIG. 4C is a schematic plan view.

  As shown in FIG. 4, the shower device 101 according to the comparative example 2 has the same components as the shower device 100 according to the comparative example 1, but has a form in which water is discharged radially from the throttle unit 2. Hereinafter, such a form is referred to as a “radial type”. In Comparative Example 2, the throttle unit 2 discharges water in a direction substantially perpendicular to the water spray surface 4a. The water discharged from the throttle unit 2 collides with the slope 50 and changes its flow direction, and flows into the water sprinkling unit 4. Therefore, similarly to the comparative example 1 described above with reference to FIG. 2, the flow velocity decreases and bubbles grow on the downstream side of the sprinkling unit 4. As a result, the water discharged from the downstream side of the water sprinkling part 4 is less likely to contain bubbles.

  FIG. 5 is a photograph showing the situation in the water sprinkling unit 4 and the mode of water discharge from the water sprinkling holes 4p when the shower apparatus 101 according to Comparative Example 2 is used. Fig.5 (a) is a plane photograph when the inside of the water sprinkling part 4 is observed from upper direction. FIG.5 (b) is the side surface photograph showing the water discharge aspect from the water spray hole 4p.

In Comparative Example 2, as will be described below, bubbles are not uniformly mixed from the central portion (upstream side) of the water spray plate 4b to the outer peripheral portion (downstream side), and the particle size of the shower is not uniform.
From FIG. 5A, it can be seen that in the central direction of the watering plate 4b, the mixing rate of bubbles is high and the bubble diameter is small. For this reason, as shown in FIG.5 (b), the bubble mixing rate of the bubble water discharged from the water spray hole 4p is high, and the particle size of bubble water is large.
FIG. 6 is a schematic graph showing the relationship between the distance from the center of the water spray plate 4b and the particle size of the water discharged from the water spray holes 4p. L1, L2, and L3 on the horizontal axis represent distances from the center of the water spray plate 4b to the water spray holes 4p (see FIGS. 4B and 7B).
As shown in FIG. 6, in the shower device 101 according to Comparative Example 2, it can be seen that the particle size of the water discharged from the water spray holes 4 p becomes small at the outer peripheral portion (downstream side) around the distance L1.

Furthermore, it can be seen from FIG. 5 (a) that the bubble mixing rate is low and the bubble diameter is large in the outer circumferential direction of the watering plate 4b. As described above, since the air bubbles are large in the outer peripheral direction of the water sprinkling portion 4, the water bubbles are unlikely to flow out from the water sprinkling holes 4p. This is because the liquid phase and the flow velocity of the bubbles are low, and the bubbles are bound and stagnated. In addition, vortices and backflows are likely to occur, resulting in a large loss of kinetic energy. Further, when there is a rectifying rib (a rectifying projection provided on the inner surface of the water spray plate 4b) or the like, the bubbles collide with the rectifying rib or the like, and the bubbles are more likely to be combined with each other. And backflow is more likely to occur. As a result, as shown in FIGS. 5B and 6, the bubble mixing rate of the bubble water discharged from the spray holes 4 p on the outer periphery of the spray plate 4 b becomes low, and the particle size of the bubble water becomes small. .
In addition, the bubble diameter in the water sprinkling part 4 becomes about 600-1200 micrometers, and the bubble diameter varies.

Thus, in Comparative Example 2, the shower particle size and flow velocity are not adequately ensured particularly in the outer peripheral portion. For this reason, it is difficult to obtain a shower with a good texture as a whole.
Here, Comparative Example 1 in a form in which water is discharged radially from the throttle unit 2 (hereinafter, this form is referred to as “non-radial type”) can be discussed in the same manner as in Comparative Example 2.

On the other hand, the experimental result by this embodiment is demonstrated, referring FIGS.
FIG. 7 is a schematic diagram showing a radial shower device 1B having the same components as those of the shower device 1 according to the present embodiment. 7A is a schematic perspective sectional view, FIG. 7B is a schematic sectional view, and FIG. 7C is a schematic plan view. As shown in FIGS. 7A and 7B, the shower apparatus 1B includes an interface control unit 5 described later. The interface controller 5 suppresses the backflow of the bubbly water in the direction of the aeration unit 3 and can appropriately ensure the flow velocity in the sprinkling unit 4 of the bubbly water.

  FIG. 8 is a photograph showing the situation in the water sprinkling unit 4 and the mode of water discharge from the water sprinkling holes 4p when the shower apparatus 1B according to the present embodiment shown in FIG. 7 is used. Fig.8 (a) is a plane photograph when the inside of the water sprinkling part 4 is observed from upper direction. FIG.8 (b) is a side photograph showing the water discharge aspect from the water spray hole 4p when it sees from the outer peripheral side.

  From FIG. 8A, it can be seen that in the shower device 1B, bubbles are uniformly mixed in an appropriate amount from the central portion (upstream side) of the water sprinkling portion 4 to the outer peripheral portion (downstream side). There is no stagnation of the bubbles, and the bubbles flow in the outer circumferential direction with a small diameter. For this reason, the bubble water 200 can flow out of the sprinkling hole 4p appropriately. This indicates that the liquid phase and the flow velocity of the bubbles are high, so that the bubbles are restrained from being combined and stagnating. For this reason, vortices and backflow are unlikely to occur, and the loss of kinetic energy due to this is small. Even when a rectifying rib or the like is present, it is considered that bubble coupling, vortexing, backflow, and the like are less likely to occur as compared with Comparative Example 2.

As can be seen from FIG. 8B, the bubble mixing rate of the bubble water 200 discharged from the sprinkling holes 4p is high and the particle size of the bubble water 200 is large, including the outer peripheral side.
Further, as can be seen from FIG. 6, in the shower apparatus 101 according to the comparative example 2, the particle diameter decreases in the outer peripheral portion (downstream side) around the distance L <b> 1, whereas in the present embodiment illustrated in FIG. 7. In such a shower device 1B, the particle diameter of the bubbly water 200 does not decrease at the outer peripheral portion (downstream side) with the distance L1 as a boundary. This is because, as shown in FIG. 8 (a), small bubbles are uniformly mixed from the central part of the watering part 4 to the outer peripheral part.
The bubble mixing rate in the entire shower was about 25% at the flow rate of about 11 liters / minute in the shower device 101 according to Comparative Example 2, whereas it was 25% at the flow rate of about 6.5 liters / minute in the shower device 1B. That was all.
Moreover, in the shower apparatus of Comparative Example 2, even if the supply water pressure is about 0.1 megapascal at a flow rate of about 11 liters / minute, it is possible to obtain a uniform shower flow including bubbles up to the downstream side of the sprinkling unit 4. Although not easy, in the shower apparatus 1B of the present embodiment, even if the supply water pressure is about 0.1 megapascals at a flow rate of about 6.5 liters / minute, the uniform shower including bubbles to the downstream side of the sprinkling unit 4 I was able to get a flow.

As described above, in the shower device 1B according to the present embodiment, the shower particle size and flow velocity are appropriately ensured from the center of the sprinkler 4 to the outer periphery. For this reason, a shower with a good texture can be obtained.
Here, the non-radial shower device 1 can be discussed similarly to the shower device 1B.
The plurality of water spray holes 4p can be provided at positions separated from the throttle portion 2. This significance will be described below.
Air is drawn into the water side by the kinetic energy of the water released from the throttle 2 into the atmosphere. At this time, the amount of air sucked is proportional to the speed and surface area of the water after being discharged from the throttle 2. The discharged water and the drawn-in air collide with a gas-liquid interface 4s formed in the vicinity of the boundary between the air mixing part 3 and the water sprinkling part 4, so that these gas and liquid are mixed.
Here, by providing a plurality of water spray holes 4p at positions separated from the throttle unit 2, the throttle unit 2 and the gas-liquid interface 4s are separated from each other, and the surface area of the water discharged from the throttle unit 2 is increased. . Thereby, it is possible to efficiently draw air without increasing the flow velocity at the throttle portion 2 (increasing pressure loss). Thereby, the mixing rate of air increases.
The distance from the throttle unit 2 to the water spray hole 4p can be set to 15 mm or more, for example. If it is too short, a velocity boundary layer (a layer formed at the boundary between water having a high velocity and air having a low velocity existing around it) does not develop. As it is, water and air collide with the gas-liquid interface 4s. For this reason, the surface area of the water discharged from the throttle portion 2 cannot be sufficiently secured, and the air mixing rate may be reduced. On the other hand, when the throttle portion 2 and the water spray hole 4p are separated by, for example, 15 mm or more, the velocity boundary layer formed around the water discharged from the throttle portion 2 is sufficiently developed, and the surface area of this water is sufficient. Since it can be secured, the air contamination rate increases.
In this manner, by providing the plurality of water spray holes 4p at positions separated from the throttle portion 2, the air mixing rate can be increased and the bubble water 200 can be formed satisfactorily.

  In Comparative Examples 1 and 2, it is conceivable to improve the flow rate of water (bubble water) in the sprinkling unit 4 by reducing the opening area of the injection port 2a. The kinetic energy is reduced by the collision of the discharged water flow with the slope 50 or the like. On the other hand, in this embodiment, since the discharge water flow from the throttle part 2 does not collide directly until it flows into the water spray hole 4p, the flow rate of water (bubble water) in the water spray part 4 is more effectively increased. Secure and rectify the bubbly water. For this reason, there is little loss of kinetic energy.

  Thus, according to the present embodiment, it is possible to appropriately ensure the shower particle size and flow velocity. Thereby, a shower having a good texture can be obtained, and a pleasant stimulus can be obtained. This embodiment can be applied particularly effectively in areas with low water pressure. Moreover, when the grain is large, a secondary effect that heat dissipation is small is obtained. The present embodiment can be suitably applied to a handy type or a fixed type shower used in a bathroom or kitchen.

Next, various configurations of the present embodiment will be described with reference to FIGS.
In the present embodiment, the throttle unit 2 has an opening (jet port 2a) such as one or a plurality of orifices for discharging water.
When there are a plurality of injection ports 2a, at least two of the water discharged from the plurality of injection ports 2a may be discharged in a plurality of different directions according to each of the plurality of injection ports 2a. . Further, at least two of the discharge flow paths of water discharged from the plurality of injection ports 2a may be configured not to be on the same plane.

FIG. 9 is a schematic side view illustrating the ejection port 2a.
As illustrated in FIG. 9A, the injection port 2a may be configured to be dotted with circular injection ports 2a, or as illustrated in FIGS. 9B and 9C. You may make it the structure which provided the large injection opening 2a 1 or 2 or more. 9 (b) and 9 (c), since the number of holes is small, it can be easily manufactured and the manufacturing cost can be kept low.

  Further, as shown in FIG. 9D, a plurality of injection ports 2a may be arranged in a zigzag manner. That is, at least two of the plurality of injection ports 2a have different distances from the water spray surface 4a. With this configuration, the discharge flow path of the discharged water is not on the same plane, and the flow path of the discharge water flow becomes dense. For this reason, the shielding effect which prevents the bubble water 200 flowing back to the aeration part 3 side becomes higher. Further, by arranging the plurality of injection ports 2a in a zigzag manner, the discharged water increases the contact area with the air, and the air mixing rate is improved.

  Next, FIG. 10 is a schematic view illustrating the configuration of the shower device 1. 10 (a) and 10 (c) are schematic plan views, and FIGS. 10 (b) and 10 (d) are enlarged views of the vicinity of the aperture 2 in FIGS. 10 (a) and 10 (c), respectively.

  As shown in FIG. 10, the throttle unit 2 may have a curved surface, whereby the watering unit 4 can have various shapes. In FIG. 10, the watering part 4 which has circular shape was shown as an example.

  As shown in FIGS. 10A and 10B, the throttle unit 2 has a configuration in which water discharged from the plurality of injection ports 2 a is uniformly discharged radially toward the circumference of the water spray unit 4. Good. In this case, the throttle unit 2 may have a curved surface that is convex toward the water spray unit 4. Thereby, bubbling water spreads evenly in the sprinkling part 4, bubbling water is discharged from each sprinkling hole 4p, becomes large-sized, and the flow velocity tends to increase.

  Further, as shown in FIGS. 10C and 10D, the throttle unit 2 may be configured to discharge water in a direction parallel to the water supply path S. Thereby, the shielding effect is appropriately obtained. In this case, the throttle unit 2 may have a curved surface that is concave on the water sprinkling unit 4 side. This structure makes it easy to prevent backflow, so that air can be appropriately mixed without increasing the flow velocity at the throttle portion 2 (increasing pressure loss).

  Next, FIG. 11 is a schematic view illustrating another configuration of the shower device 1. 11A is a schematic perspective view, FIG. 11B is a schematic plan view, and FIG. 11C is a schematic cross-sectional view.

  As shown in FIG. 11, in the present embodiment, the throttle unit 2 may surround the watering unit 4. In the figure, the water supply channel S (or a part thereof), the throttle unit 2, and the air mixing unit 3 are arranged in this order from the outside to the inside so as to surround the watering unit 4. Water flows through a water supply channel S disposed around the water sprinkling unit 4 and is discharged toward the water sprinkling unit 4 from the injection port 2 a of the throttle unit 2. At this time, air is mixed in by the air mixing unit 3. The injection port 2a can be appropriately arranged so that the bubble water flows uniformly in the water sprinkling part 4. In addition, the planar shape of the water sprinkling part 4 may be a rectangle or any other shape in addition to the illustrated circle. When the shape of the water sprinkling part 4 is made circular, it is possible to flow the bubble water into the water sprinkling part 4 more uniformly. That is, from the peripheral part to the central part of the water sprinkling part 4, the bubble water can travel in the reverse radial directions at substantially the same flow rate without colliding with the side surface or the like.

Next, another configuration of the water sprinkling unit 4 will be described with reference to FIGS.
12 and 13 are schematic cross-sectional views illustrating the water sprinkling unit 4.
As shown in FIG. 12, the thickness W of the internal space of the sprinkler 4 may be configured to decrease as the distance from the throttle 2 increases. Thereby, the flow velocity of water in the internal space can be ensured appropriately.

  For example, as shown to Fig.12 (a), you may make it the structure which the water spraying surface 4a inclines to the opposing surface 4c side as it goes downstream. Further, as shown in FIG. 12B, the facing surface 4c may be inclined toward the water spray surface 4a as it goes downstream.

In addition, as shown to Fig.12 (a), the sprinkling hole 4p may change a flow-path cross-sectional area by the inner side and the outer side of the sprinkling part 4, for example, a flow-path cross-sectional area where the outer side is relatively small. You may make it the structure which has. Thereby, the flow rate of the bubble water discharged from the water spray hole 4p can be appropriately ensured.
In addition, like the example shown to Fig.12 (a), when the aperture | diaphragm | squeeze part 2 makes it the structure which discharges water in the direction inclined to the water sprinkling surface 4a side, the bubble water 200 in the water sprinkling part 4 is plural. Since the water flows uniformly toward the water sprinkling holes 4p, the water sprinkling part 4 is rectified. Thereby, the water which has a uniform bubble can be discharged uniformly from the water spray surface 4a. Moreover, it becomes difficult to form a vortex in the watering part 4, and the kinetic energy of the water released from the throttle part 2 into the atmosphere can be used efficiently.

  Next, as shown in FIGS. 13A and 13B, the interface control unit is the minimum of the opening formed by the interface control unit and the watering part between the air mixing unit and the plurality of watering holes. The opening area 5a is provided in a protruding shape with respect to the water spraying portion so as to be smaller than the internal space cross-sectional area 4g of the water spraying portion located immediately downstream of the interface control unit 5. In this embodiment, the interface control unit is a projecting member that protrudes from the water sprinkling unit, thereby narrowing the opening area of the opening formed by the interface control unit and the water sprinkling unit, and the generation position of the interface by its shape and arrangement And the strength of the shielding effect can be controlled. Thereby, the inflow air flow velocity is increased and the shielding effect is improved. Moreover, as shown in FIG.13 (c), you may provide an interface control part above and below a watering part. Further, as shown in FIG. 13 (d), the opening formed by the interface control unit and the water sprinkling unit may be tapered, and in this case, the water discharged from the jet outlet is the air formed around it. More air can be mixed without hindering the development of the boundary layer. Further, as shown in FIG. 13E, a part of the downstream flow path of the interface control unit may be enlarged. Thus, by sufficiently increasing the flow path cross-sectional area, the shielding effect can be controlled more reliably and the interface can be formed. In addition, by appropriately adjusting the length L of the opening in the flow path direction, the air mixing rate can be improved and rectification can be appropriately ensured.

  Further, as shown in FIG. 14B, it is desirable that the water discharged from the jet port flows uniformly into the opening. Since the boundary layer of air formed around the discharged water is formed concentrically with the water flow, if the distance between the waters or the water and the wall surface is not uniform, the strength of the shielding effect is generated. Therefore, there is a possibility that the water inside the sprinkling part flows backward from the part where the shielding effect is weak. Moreover, since it is uniform with respect to an opening part, since a water flow rushes uniformly inside a watering part, a higher rectification property can be ensured. Therefore, as shown in FIG. 14C, as a more desirable shape, the opening shape formed by the interface control unit and the water sprinkling unit is concentric with the water discharged from the jet outlet, thereby further improving the shielding effect. be able to.

  Alternatively, as illustrated in FIG. 15, the interface control unit may be provided so as to contact a part of the water flow discharged from the throttle unit. By contacting the interface controller with a part of the water flow in this manner, the shielding effect is controlled by changing the cylindrical water flow into a film shape while maintaining the water force, and between the interface controller and the water spray hole. An interface can be formed. In addition, as a shape of an interface control part, it can provide so that about 50% of a column-shaped water flow cross-sectional area may contact.

The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

DESCRIPTION OF SYMBOLS 1 Shower apparatus, 1B Shower apparatus, 2 Constriction part, 2a opening, injection port, 3 Air mixing part, 3a opening, 4 Sprinkling part, 4a Sprinkling surface, 4b Sprinkling plate, 4c Opposing surface, 4p, 4pa, 4pb, 4pc Sprinkling Hole, 4s interface, 4g Water spray section internal cross section, 5 Interface control section, 50 Slope, 100 Shower device, 101 Shower device, 200 Water, bubble water, A arrow (water flow path), B arrow (air flow path) ), L length in the flow path direction, L1, L2, L3, L4 distance, P, P1, P2 line segment, R straight line in the water discharge direction, S water supply channel, W thickness

Claims (5)

A water supply channel for passing water,
A throttling portion provided in the water supply channel, for reducing the flow channel cross-sectional area of the water and discharging the water;
An air mixing part provided on the downstream side of the throttle part, for mixing air into the discharged water;
A watering part provided on the downstream side of the air mixing part and having a plurality of watering holes for discharging air-containing water which is water containing the air, and
The throttle portion is arranged to discharge the water along a surface on which the plurality of water spray holes are arranged,
A shower apparatus comprising an interface controller between the aeration unit and the plurality of water spray holes of the water spray unit. The cross-sectional area of the opening, which is the narrowest part formed by the interface control unit and the water sprinkling unit,
The shower device according to claim 1, wherein, of the internal space of the water sprinkling part, the shower device is smaller than a cross-sectional area of an internal space located downstream of the interface control part. The said restriction | limiting part is equipped with the opening which discharges the said water, The said opening is arrange | positioned so that the said opening part may be located on the straight line of the water discharge direction of the said opening. Shower equipment. The shower device according to claim 1, wherein the throttle unit has a plurality of openings through which the water is discharged. The said throttle part is provided with the opening which discharges the said water, and the said opening is arrange | positioned so that the water discharge with respect to the said opening part may become uniform, The any one of Claims 1-4 characterized by the above-mentioned. Shower equipment.

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