JP5633783B2 - Shower equipment - Google Patents

Description

  The present invention relates to a shower device that discharges bubble-containing water mixed with air.

  As an example of a shower device, there is known a device in which air is mixed into water by using a so-called ejector effect and discharged as bubble-containing water. This shower device disperses water that has flowed into the device into a plurality of sprinkling holes and discharges water. When air is mixed into the discharged water, air is mixed into the water that has flowed into the device. It is comprised so that it may disperse | distribute to each water sprinkling hole.

  As an example of such a shower device, a shower device as described in Patent Document 1 below has been proposed. The shower apparatus described in the following Patent Document 1 has a plurality of water spray holes provided on the front surface of a disk-shaped housing shell, and distributes water introduced from the center of the rear surface of the housing shell to the plurality of water spray holes. And discharged. Furthermore, in this shower device, after water flows into the housing shell, air is mixed to form bubble mixed water, and a plurality of water sprays formed so that the bubble mixed water is distributed over the entire front surface of the disk-shaped housing shell. It distributes to the holes. Therefore, a turbulent flow generating extension is arranged in the direction in which the bubble mixed water travels, and the bubble mixed water collides with the turbulent flow generated expansion to change the direction so that the bubble mixed water spreads over the entire front surface of the housing shell. ing.

  As another example of such a shower apparatus, a shower apparatus as described in Patent Document 2 below has also been proposed. In the shower device described in Patent Document 2 below, when a cock such as a hot and cold water mixing tap is opened, water is supplied from the hose and water passes through the orifice member. At this time, since a decompressed state is formed in the decompression chamber provided on the downstream side of the orifice member, air is sucked from the inner suction port opened in the decompression chamber, and water and air are mixed. The shower device described in Patent Document 2 below generates bubble-containing water in this way and discharges it from a plurality of water spray holes provided in the shower head. In this shower device, the bubble-containing water after generation hits the screw member in the partition pipe provided on the downstream side of the decompression chamber and further on the inner wall of the shower head on the downstream side, and is directed to the sprinkling holes while changing its direction.

  Furthermore, from the viewpoint of a shower apparatus that discharges water mixed with bubbles, a shower apparatus as described in Patent Document 3 below has also been proposed. The shower device described in the following Patent Document 3 has a gas mixing part that mixes gas into a water supply channel through which shower water flows, and refines the gas mixed in the shower water in the gas mixing part to supply water. There is provided a fine bubble generator for containing fine bubbles having a bubble diameter of 0.1 to 1000 μm with respect to shower water discharged from a shower water discharge portion provided at the exit of the road. As this gas mixing section, gas mixing ratio control means for controlling the mixing ratio of gas into the shower water is provided, and a gas flow valve which is an electromagnetic valve constituting the gas mixing ratio control means is provided as a gas supply flow path. Is provided. The gas flow valve is connected to a control unit that controls the operation of the shower device, and its opening degree is controlled. The opening control of the gas flow valve is to control the size of the gas supply channel, and the flow rate of the gas flowing through the gas supply channel is variable.

JP-T-2006-509629 Japanese Patent No. 3747323 JP 2008-237601 A

  In the shower apparatus described in Patent Document 2, as described in Paragraph 0015 of the same document, the shower device is for realizing a feeling that water hits the user in an intermittent manner. This “discontinuity” means that the water droplets having a non-uniform particle size hit the user. If the water droplets with a large particle size hit, the user is given a strong feeling of bathing and the water droplets with a small particle size are hit. If the user feels a weak bathing sensation, the user may be able to intermittently give the user the intensity of the bathing sensation. According to specific considerations by the present inventors, it is presumed that the bubble-containing water immediately after the generation is mixed with air substantially uniformly with respect to the water. It is thought that the bubbles collide with each other when the direction is changed by hitting the inner wall of the head, and the bubble diameter is non-uniform when reaching the water spray hole. And by discharging such bubble-mixed water from the sprinkling holes, water droplets with non-uniform particle diameters are formed, and the above-mentioned feeling is realized by applying the water droplets with non-uniform particle diameters to the user. It is thought that there is.

  On the other hand, although there is no description about the property of the bubble mixed water discharged by the shower apparatus of the said patent document 1, the bubble mixed water whose bubble diameter is nonuniform similarly to the shower apparatus of the said patent document 2 It is considered that water droplets having a non-uniform particle diameter are formed by supplying and discharging water to the water spray holes, and these water droplets having a non-uniform particle diameter are applied to the user. In the shower device described in Patent Document 1, a turbulent flow generation extension is arranged in the traveling direction of the bubbling water, and the direction is changed by causing the bubbling water to collide with the turbulence generation expansion. This is because the same non-uniform bubble growth occurs in the shower device described in Patent Document 2 and it is considered that water droplets having a non-uniform particle size are applied to the user. Both the shower device described in Patent Document 1 and the shower device described in Patent Document 2 are intended to apply water droplets having a non-uniform particle diameter to the user with water containing air bubbles mixed with non-uniform air bubbles. Therefore, the difference in strength of the bathing feeling is small, and the feeling of stimulation is poor.

  On the other hand, in the shower device described in Patent Document 3, a gas flow rate valve, which is an electromagnetic valve constituting the gas mixture ratio control means, is provided in the gas supply channel. By providing such a gas mixture ratio control means, it is possible to intentionally control the bubble mixture rate, but an electromagnetic valve as a gas flow valve is required. Therefore, according to the shower device described in Patent Document 3, there is a possibility that the bubble mixed water can be discharged with a sense of irritation, but a means for physically operating the structure like an electromagnetic valve is required. Therefore, it becomes a shower device that goes against size reduction and cost reduction.

  The present inventors are a shower water discharger that can feel a feeling of being exposed to a large amount of rain even with a small amount of water, and the instantaneous flow rate of the water discharge changes greatly and is a pleasant stimulus. It was intended to provide a shower device that enables water discharge with a feeling and contributes to miniaturization and cost reduction. On the other hand, the conventional technology described above realizes the feeling that water droplets with a non-uniform particle size hit the user as described above, so that it is comfortable that the instantaneous flow rate of the discharged water greatly fluctuates in addition to the sense of volume. It did not provide irritating shower water. Further, it has not been possible to provide a shower water discharge having a pleasant stimulation feeling that the instantaneous flow rate of the water discharge greatly fluctuates in addition to the volume feeling while reducing the size and cost.

  The present invention has been made in view of such a problem, and the purpose thereof is to feel a feeling of being in a large amount of rain even if the amount of water is small, and the instantaneous flow rate of water discharge varies greatly. An object of the present invention is to provide a shower device capable of enjoying shower water discharge that can feel such a pleasant stimulation.

  In order to solve the above problems, a shower device according to the present invention is a shower device that discharges air-mixed water in which air is mixed, and is provided on a downstream side of the water supply unit, a water supply unit that supplies water, A throttle part that reduces the cross-sectional area of the flow channel compared to the water supply part and increases the flow rate of water passing therethrough and injects it downstream, and water that is provided downstream of the throttle part and is injected through the throttle part An air mixing part in which an opening for forming air into the air mixing part is formed, and an air mixing part provided downstream of the air mixing part and discharging the air mixed water generated in the air mixing part A water discharge portion in which a plurality of water spray holes are formed.

A separation promoting means for separating the water flow injected from the throttle portion into the aeration unit from a wall surface constituting the throttle portion is provided, and the separation promotion means is configured to remove the water flow passing through the throttle portion from the water supply portion. It is configured to bend so as to peel from the wall surface by changing the traveling direction, and the flow between the water flow and the wall surface constituting the throttle channel by causing the flow separation by the separation promoting means. A negative pressure portion is formed, and is between the negative pressure generated in the negative negative pressure portion between the flow and the negative pressure generated in the suction negative pressure portion in the vicinity of the opening for sucking air into the air mixing portion. Using the pressure difference, the amount of air taken into the aeration unit is periodically changed by vibrating the water flow injected from the throttle unit into the aeration unit in a direction intersecting the injection direction, and the water discharge The bubble mixture discharged from the section Varying the instantaneous flow rate of water is intended to perform pulsating water discharge at.

Further, the shower device forms the opening and the suction negative pressure portion only on the opposite side of the flow negative pressure portion formed by the separation promoting means via the water flow, and the air-tightening portion includes the air. A throttle channel that is flat with respect to the jet direction of the water flow is formed so that the water flow injected into the mixing portion becomes a film-like water flow, and air sucked from the opening does not enter the negative negative pressure portion It is configured as follows.

  According to the present invention, air is mixed into the water flow ejected from the throttle unit in the air mixing unit to form bubble mixed water, and the bubble mixed water is discharged from the water discharging unit, so that the user can enjoy shower water discharged in a large amount. Can be made. Furthermore, since the pulsating water discharge is performed by greatly changing the instantaneous flow rate of the bubble-mixed water discharged from the water discharge unit, the user can enjoy shower water discharge that feels a pleasant stimulation feeling that the instantaneous flow rate of the water discharge greatly changes. Can do. In performing pulsating water discharge, the amount of air taken into the aeration unit is changed by vibrating the water flow injected from the throttle unit in a direction intersecting the injection direction.

  Therefore, the water flow is vibrated in the direction intersecting with the injection direction, the amount of air taken into the aeration unit is changed using the vibration, and the pulsating water discharge is performed using the change in the air amount. As a result, pulsating water discharge can be performed while using a simple configuration in which the water flow is vibrated.

  In order to vibrate the water flow in this way, separation promoting means for separating the water flow injected from the throttle portion into the air mixing portion from the wall surface constituting the throttle portion is provided. A flow negative pressure part is formed between the water flow and the wall surface by causing the flow separation by this separation promoting means, and the negative pressure generated in the flow negative pressure part and the negative pressure suction of air to the air mixing part The water flow is vibrated by utilizing the pressure difference between the negative pressure generated in the suction negative pressure portion for the purpose. The water flow is separated from the wall surface to form a negative flow pressure portion, and the water flow is vibrated with a simple configuration in which the suction negative pressure amount for sucking air into the air mixing portion is varied. The amount of uptake can be varied.

  In the present invention, a further contrivance is made in order to reliably form the flow negative pressure portion. For one, the opening is formed only on the side opposite to the negative flow pressure portion, and the air sucked from the opening is configured not to enter the negative flow pressure portion. In this way, by devising the arrangement of the opening and the negative pressure part between the flow, it is possible to easily realize a configuration that generates negative pressure without mixing air into the negative pressure part between the flows, and to ensure the necessary negative pressure. Can be generated.

  Further, since the flat throttle channel is formed in the throttle unit, the water flow ejected from the throttle channel is configured to be a film-like water flow. Therefore, since a film-like water flow can be interposed between the opening and the negative flow pressure portion, the air taken in from the opening is blocked by the film-like water flow and does not reach the negative flow pressure portion. In this way, with a simple configuration that flattenes the cross-sectional shape of the throttle flow path, a configuration that generates negative pressure without mixing air into the negative pressure section of the flow can be realized easily, and the required negative pressure is ensured. Can be generated. Therefore, with a simple configuration that contributes to cost reduction and downsizing, even with a small amount of water, in addition to being able to feel a feeling of being exposed to a large amount of rain, the instantaneous flow rate of the discharged water greatly fluctuates. The shower apparatus which can receive the shower water discharge which can also feel a comfortable irritation | stimulation is implement | achieved.

Also, in the shower apparatus according to the present invention, the narrowed portion jet water virtual straight injection direction of water jetted were drawn from the said without interfering with the inner wall constituting the aeration unit and the ejection water portion watering It is also preferable to be configured to reach the position where the hole is formed.

  In this preferred embodiment, the jet water imaginary straight line obtained by extending the jet direction of the water jetted from the throttle portion reaches the position where the sprinkling holes are formed without interfering with the inner walls constituting the aeration unit and the sprinkling unit. Thus, the water sprayed from the throttle part reaches the position where the water spray holes are formed without disturbing the flow depending on the inner walls constituting the air mixing part and the water spray part.

  At the stage where the water jetted through the restrictor enters the gas-liquid interface and becomes bubble mixed water, the bubbles in the bubble mixed water can be configured to have a substantially uniform diameter. It is possible to reach the position where the sprinkling holes are formed with a simple bubble diameter. When the bubble-mixed water containing bubbles having a substantially uniform bubble diameter is supplied to the water spray holes as described above, a bubble flow or a slag flow can be formed in the water spray holes and immediately after being discharged from the water spray holes. In this way, when the bubble mixed water formed as a bubble flow or a slag flow containing bubbles having a substantially uniform bubble diameter is discharged from the sprinkling holes, it is substantially orthogonal to the discharge direction without being mist like an annular flow. It is sheared in the direction and granulated almost uniformly. Therefore, since the water droplets granulated to a relatively large and uniform particle size land on the user, it is possible to feel a sense of volume as if it is taking a large amount of rain even with a small amount of water, and a pleasant stimulus It is possible to surely enjoy shower water discharge that can be felt.

  Moreover, in the shower apparatus which concerns on this invention, it is also preferable that the said throttle flow path is shifted to the wall surface side facing the wall surface in which the said opening is formed, and the said water flow is injected.

  In this preferred embodiment, the throttle channel is configured to inject the water flow by shifting toward the wall surface facing the wall surface where the opening is formed, so that the space on the wall surface side where the opening is formed is enlarged. The water flow is jetted so as to reduce the space on the opposite side across the water flow. Accordingly, the negative pressure generated in the suction negative pressure portion can be configured to be surely greater than the negative pressure generated in the flow negative pressure portion, and the water flow injected in a film shape can be vibrated reliably. it can.

  Moreover, in the shower apparatus which concerns on this invention, it is also preferable that the said narrow flow path injects the said water flow radially so that the said water flow to inject may become the disk shape connected over the perimeter.

  In this preferred embodiment, the throttle channel ejects a water flow radially, and the jetted water flow has a disk shape connected over the entire circumference. Therefore, no end is formed in the water flow ejected from the throttle channel, and the end of the water flow does not interfere with the wall surface of the channel. Accordingly, it is possible to suppress a decrease in the flow velocity due to the end of the jetted water flow interfering with the wall surface of the flow path, and it is possible to reliably vibrate the entire film-like water flow.

  Further, in the shower device according to the present invention, the separation promoting means is constituted by an elbow part in which the flow path from the water supply part to the throttle part is an elbow shape, and the water flow injected from the throttle part to the aeration unit Further, it is also preferable that the diaphragm part is peeled off from the wall surface constituting the throttle part.

  In this preferred embodiment, the flow path from the water supply section to the throttle section is formed in an elbow shape so that the flow path can be bent and the surface change of the flow path can be realized. Therefore, separation of the water flow flowing through the throttle portion can be caused with a simple configuration, and the necessary negative pressure can be generated reliably.

  In the shower device according to the present invention, it is also preferable that at least a part of the inner peripheral surface of the elbow portion is connected so that the upstream surface and the downstream surface form a corner.

  In this preferred embodiment, at least a part of the inner peripheral surface of the elbow part is connected so that the upstream side surface and the downstream side surface form a corner, thereby making a steep surface change by a simple configuration. Can be realized. Therefore, separation of the water flow flowing through the throttle portion can be caused with a simple configuration, and the necessary negative pressure can be generated reliably.

  According to the present invention, in addition to being able to feel a feeling of being exposed to a large amount of rain even with a small amount of water, shower water discharge that can also feel a pleasant stimulation feeling that the instantaneous flow rate of the water discharge fluctuates greatly Can be provided.

It is a figure which shows the shower apparatus which concerns on 1st embodiment of this invention, Comprising: (A) shows a top view, (B) shows a side view, (C) has shown the bottom view. It is sectional drawing which shows the AA cross section in (A) of FIG. It is an expansion perspective sectional view which expands and shows the water injection piece vicinity shown in FIG. It is a perspective view which shows the water ejection piece shown in FIG. FIG. 5 is a perspective cross-sectional view showing a cross section near the center of the water ejection piece shown in FIG. 4. It is a top view which shows the water injection state at the time of using the water injection top shown in FIG. It is a figure which shows the state of the water and air in the air mixing part of the shower apparatus which concerns on 1st embodiment of this invention. It is a figure which shows the state of the water and air in the air mixing part of the shower apparatus which concerns on 1st embodiment of this invention. It is a figure which shows the state shown in FIG. 7 typically. It is a figure which shows typically the state shown in FIG. It is a figure which shows the shower apparatus which concerns on 2nd embodiment of this invention, Comprising: (A) shows a top view, (B) shows a side view, (C) has shown the bottom view. It is sectional drawing which shows the BB cross section in (A) of FIG. It is C arrow line view in (B) of FIG. It is the D section enlarged view of FIG. It is a figure which shows the modification of the part shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  The shower apparatus which is 1st embodiment of this invention is demonstrated referring FIG. FIG. 1 is a view showing a shower apparatus F1 according to the first embodiment of the present invention. FIG. 1A shows a plan view, FIG. 1B shows a side view, and FIG. (C) is a bottom view. As shown in FIG. 1A, the shower apparatus F1 is mainly composed of a main body 4 having a substantially disk shape, and a water supply port 41d is formed on the upper surface 4a of the shower apparatus F1 (main body 4). Yes.

  As shown in FIG. 1B, the outer shape of the body 4 of the shower apparatus F1 is configured by a cavity 4A in which a water supply port 41d is formed and a shower plate 4B in which a water spray hole 443 is formed. ing. As shown in FIG. 1C, a plurality of water spray holes 443 are formed in the lower surface 4b of the main body 4, and an opening 431 is also formed. In the case of this embodiment, the watering holes 443 are arranged radially with the opening 431 as the center.

  Subsequently, the shower apparatus F1 will be described with reference to FIG. 2 which is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 1, the shower apparatus F1 is configured by a cavity 4A, a shower plate 4B, and a water ejection piece 4C.

  The cavity 4A is a member that forms the outer shape of the main body 4 together with the shower plate 4B. A circular recess 4Ab is formed from the contact surface 4Aa opposite to the upper surface 4a of the main body 4 toward the upper surface 4a. A through hole 4Ac extending from the upper surface 4a to the recess 4Ab is formed in the vicinity of the center of the cavity 4A. By providing the through hole 4Ac in this way, the water supply portion 41 extending from the water supply port 41d to the throttle portion 42 is formed.

  The shower plate 4B is a member that forms the outer shape of the main body 4 together with the cavity 4A, and a plurality of water spray holes 443 are radially formed. The contact surface 4Ba opposite to the lower surface 4b of the region where the water sprinkling holes 443 are formed is configured to be the side wall 44c of the water sprinkling portion 44.

  When the contact surface 4Ba of the shower plate 4B and the contact surface 4Aa of the cavity 4A are brought into contact with each other, a space is formed between the recess 4Ab of the cavity 4A, and this space is formed between the aeration unit 43 and the water sprinkling unit 44. It is comprised so that it may become. A part of the recess 4Ab is configured to be a side wall 44a of the water sprinkling part 44.

  Next, the water ejection piece 4C will be described with reference to FIGS. FIG. 3 is an enlarged perspective sectional view of the vicinity of the water ejection piece 4C. FIG. 4 is a perspective view showing the water ejection piece 4C. FIG. 5 is a perspective cross-sectional view showing a cross section near the center of the water ejection piece 4C shown in FIG. As shown in FIGS. 3 to 5, the water ejection piece 4 </ b> C has a hat shape with a flange 4 </ b> Cb as a brim, and air is formed at the end opposite to the flange 4 </ b> Cb corresponding to the top of the hat shape. An introduction protrusion 4Ca is formed. An aperture projection 4Cd is formed on the side opposite to the air introduction projection 4Ca and in the vicinity of the center of the flange 4Cb.

  The throttle protrusion 4Cd constitutes a part of the throttle part 42, and forms a throttle channel 421 by facing the cavity 4A. Therefore, the throttle channel 421 forms a slit over the entire circumference so that radial and film-like water is ejected from the vicinity of the center of the cavity 4A.

  A plurality of air introduction holes 431a are formed around the aperture protrusion 4Cd over the entire circumference of the aperture protrusion 4Cd. The air introduction hole 431a communicates with an opening 431 formed in the air introduction protrusion 4Ca, and supplies air to the throttle channel 421.

  In the shower plate 4B, a circular recess 4Bc is formed from the contact surface 4Ba opposite to the lower surface 4b of the main body 4 toward the lower surface 4b. The recess 4Bc is provided at the center of the shower plate 4B so as to be located inside the watering holes 443 provided radially. A through hole 4Bb is formed from the bottom surface of the recess 4Bc to the lower surface 4b. The water ejection piece 4C is housed in the recess 4Bc.

  The air introduction protrusion 4Ca of the water ejection piece 4C is disposed so as to protrude outward from the through hole 4Bb. Therefore, the opening 431 formed in the air introduction protrusion 4Ca is configured to be able to take in outside air.

  As described above, by assembling the cavity 4A, the shower plate 4B, and the water ejection piece 4C, the shower apparatus F1 includes the water supply unit 41, the throttle unit 42, the air mixing unit 43, and the watering unit 44. Configured as follows.

  The water supply unit 41 is a part for supplying water, and is a part for supplying water introduced from the water supply port 41d to the throttle unit 42. A water supply means (water supply hose or the like) (not shown) can be connected to the water supply port 41d, and water supplied from the water supply means is supplied from the water supply part 41 to the throttle part 42.

  The throttle part 42 is provided on the downstream side of the water supply part 41, and is a part for reducing the flow passage cross-sectional area of the water supply part 41 and injecting the passing water downstream. A single throttle channel 421 is formed in the throttle unit 42.

  The air mixing part 43 is provided on the downstream side of the throttle part 42, and is a part where an opening 431 is formed for mixing air into water jetted through the throttle part 42 to form bubble mixed water. is there.

  The water sprinkling part 44 is provided in the downstream of the air mixing part 43, and is a part in which a plurality of water sprinkling holes 443 for discharging bubble mixed water are formed.

  In the shower apparatus F1, when water is supplied from the water supply unit 41, a film-like water flow WFc is ejected from the throttle channel 421 of the throttle unit. FIG. 6 shows an injection state of the film-like water flow WFc. FIG. 6 is a diagram schematically showing the spray state of the film-like water flow WFc when the shower device F1 is viewed from the water supply unit 41 side. As shown in FIG. 6, the membranous water flow WFc is injected over the entire circumference.

  By injecting the film-like water flow WFc in this way, convections that do not easily collide with each other across the entry line into which the film-like water flow WFc enters are generated. When convections that do not easily collide with each other occur in this way, the possibility of bubble enlargement due to bubble collision can be reduced. When the bubbles in the bubble-containing water are miniaturized and the flow of the bubble-containing water is difficult to collide and the miniaturized bubbles are maintained, the water spray holes 443 are arranged at positions away from the throttle channel 421. Even in this case, the bubbles are supplied to the water spray holes 443 without being influenced by buoyancy. Therefore, it is possible to stably supply the bubble mixed water through all the water spray holes 443.

  In this way, when bubble mixed water containing bubbles having a substantially uniform bubble diameter is supplied to the water spray holes 443, a bubble flow or a slag flow can be formed immediately after being discharged from the water spray holes 443 and the water spray holes 443. . In this way, when bubble mixed water formed as a bubble flow or slag flow containing bubbles having a substantially uniform bubble diameter is discharged from the sprinkling holes 443, it is substantially orthogonal to the discharge direction without being mist like an annular flow. It is sheared in the direction to be made and granulated substantially uniformly. Therefore, the water droplets granulated to a relatively large and uniform particle size are continuously landed on the user, and the user can enjoy a shower with a feeling of bathing like a large amount of rain. it can.

  Furthermore, in the shower apparatus F1 of the present embodiment, pulsating water discharge is realized in which the instantaneous flow rate of the water discharge is greatly changed so as to give a pleasant stimulation feeling that the instantaneous flow rate of the water discharge changes greatly. Changes in the state of water and air in the aeration unit 43 in the shower device F1 are shown in FIGS. 7 and 8 are diagrams based on photographs showing a state in which water has passed through the throttle channel 421 and the aeration unit 43 of the shower apparatus F1. 7 and 8, water is jetted from the throttle channel 421 to the air mixing part 43, air is sucked from the air introduction hole 431 a, and water and air are mixed in the air mixing part 43. In FIG.7 and FIG.8, the part which looks whitish is water, and the part which looks black is air.

  In the verification by the present inventors, the state shown in FIG. 7 and the state shown in FIG. 8 occur periodically alternately. In the state shown in FIG. 7, the water flow injected from the throttle channel 421 goes straight and advances toward the aeration unit 43. Due to the jet of water flow, a negative pressure is generated in the aeration unit 43, and air is sucked from the air introduction hole 431a. On the other hand, in the state shown in FIG. 8, the water flow ejected from the throttle channel 421 proceeds while being pulled so as to block the air introduction hole 431 a, and proceeds toward the aeration unit 43. The amount of air sucked from the air introduction hole 431a by this water flow injection is greatly reduced from the state shown in FIG.

  In order to explain the state shown in FIGS. 7 and 8 in more detail, FIG. 9 schematically shows the state shown in FIG. 7, and FIG. 10 schematically shows the state shown in FIG. Show. As shown in FIG. 9, the water flow WF that has flowed in from the upstream side of the throttle portion 42 hits the throttle protrusion 4 </ b> Cd, changes its traveling direction, and heads toward the throttle channel 421. The water flow WF whose speed is increased by the throttle channel 421 is jetted toward the aeration unit 43. When the water flow WF is injected into the aeration unit 43, water accumulates from the downstream side, and the water flow WF injected from the throttle channel 421 enters the accumulated water. A gas-liquid interface is generated between the portion where water is accumulated and air. For example, the standard position is the interface position S1. However, since the air-liquid interface is a place where air is torn off and taken into the water flow WF, a large undulation occurs and the region is unstable, and a return flow toward the throttle channel 421 is also generated. Therefore, as shown in FIG. 7, the actual interface position S2 may be formed so as to return upstream from the standard interface position S1.

  When water is ejected from the throttle channel 421, a negative pressure is generated in a region where no water is present in the aeration unit 43, and air is sucked from the air introduction hole 431a by the action of this negative pressure, and the air flow AF Occurs. Accordingly, a suction negative pressure part LPb for sucking air into the air mixing part 43 is formed in the vicinity of the air introduction hole 431a. By forming the suction negative pressure portion LPb, air is sucked from the air introduction hole 431a, and the water flow WF ejected from the throttle channel 421 is also affected. Specifically, the water flow WF ejected from the throttle channel 421 is pulled toward the flange 4Cb so as to close the air introduction hole 431a by the suction negative pressure part LPb.

  As shown in FIG. 10, when the water flow WF ejected from the throttle channel 421 is pulled by the suction negative pressure part LPb, the gas-liquid interface moves upstream, and the gas-liquid interface is formed at the interface position S3. . When the gas-liquid interface moves to the interface position S3, the air introduction hole 431a is substantially blocked, the negative pressure of the suction negative pressure portion LPb is reduced, and the amount of air taken in from the air introduction hole 431a is reduced. .

  In the shower apparatus F1 of the present embodiment, an elbow part EP having an elbow shape in the flow path from the water supply part 41 to the throttle part 42 is formed, and the water flow injected from the throttle channel 421 of the throttle part 42 to the aeration unit 43 The WF is configured to be peeled from the wall surface (the lower surface of the cavity 4A) constituting the throttle unit 42. More specifically, in order to form a steep surface change on a part of the inner peripheral surface of the elbow part EP, the upstream inner surface 422a and the downstream inner surface 422b are connected to form a corner 421a. . With this configuration, the water flow WF can cause flow separation when passing through the corner portion 421a, and a large vortex can be generated on the downstream side of the corner portion 421a. Centrifugal force is generated by the generation of the large vortex, and the flow negative pressure portion LPa can be formed in the water flow ejected from the throttle channel 421.

  In the state shown in FIG. 10, since the negative pressure generated in the suction negative pressure part LPb decreases, the negative pressure generated in the flow negative pressure part LPa relatively increases and is injected from the throttle channel 421. The effect of pulling back the water flow WF in a more straight direction is exhibited. The water flow WF ejected from the throttle channel 421 goes straight by the action of the negative flow pressure portion LPa, and thus returns to the state shown in FIG. Due to the interaction between the suction negative pressure part LPb and the flow negative pressure part LPa as described above, the water flow WF injected from the throttle channel 421 vibrates in a direction intersecting with the injection direction. In the shower apparatus F1 of the present embodiment, the sprinkler 44 from the aeration unit 43 is caused by the interaction between the vibration of the water flow WF ejected from the throttle channel 421 and the periodic fluctuation of the amount of air taken in from the air introduction hole 431a. The instantaneous flow rate of the bubble-containing water sent out to the water can be greatly varied.

  As described above, the shower apparatus F <b> 1 according to the present embodiment is an example of a water discharge apparatus that discharges air mixed with air, and is provided on the downstream side of the water supply section 41. The flow passage cross-sectional area is smaller than that of the water supply portion 41, the flow velocity of water passing therethrough is increased and the downstream portion of the throttle portion 42 is jetted through the throttle portion 42. The air mixing part 43 in which the air introduction hole 431a is formed as an opening for mixing air into the generated water flow to form the bubble mixed water, and the water discharging part for discharging the bubble mixed water generated by the air mixing part 43 The watering part 44 as a.

  The shower apparatus F1 further fluctuates the amount of air taken into the aeration unit 43 by vibrating the water flow injected from the throttle unit 42 into the aeration unit 43 in a direction crossing the injection direction, and sprays water as a water discharge unit. The pulsating water discharge is performed by greatly changing the instantaneous flow rate of the bubble mixed water discharged from the unit 44.

  The shower apparatus F1 of the present embodiment, as one aspect of the pulsation imparting means for greatly varying the instantaneous flow rate of the bubble-mixed water discharged from the sprinkling unit 44 as described above, is a flow negative pressure part LPa and a suction negative pressure part LPb. Is forming. As a result, the water flow WF jetted from the throttle unit 42 to the air mixing unit 43 is vibrated in a direction crossing the injection direction, thereby varying the suction negative pressure amount of the air in the air mixing unit 43, and the air mixing unit. The amount of air taken into 43 is changed.

  According to the shower apparatus F1 according to the present embodiment, air is mixed into the water flow WF ejected from the throttle unit 42 in the air mixing unit 43 to form bubble mixed water, and the bubble mixed water is supplied from the water sprinkling unit 44 serving as a water discharge unit. Since it discharges, a user can enjoy water discharge with a feeling of volume. Furthermore, since the pulsation imparting means for performing pulsation and water discharge is formed by greatly changing the instantaneous flow rate of the bubble mixed water discharged from the sprinkling unit 44, the user can comfortably stimulate the instantaneous flow rate of the water discharge greatly. You can enjoy the feeling of water discharge. When the pulsation imparting means performs pulsating water discharge, the amount of air taken into the aeration unit 43 is varied by oscillating the water flow WF ejected from the throttle unit 42 in a direction crossing the ejection direction. The pulsation imparting means vibrates the water flow WF in the direction intersecting with the injection direction, varies the amount of air taken into the aeration unit 43 using the vibration, and further uses the variation in the amount of air to generate pulsating water discharge. As a result, pulsating water discharge can be performed as a result while using a simple configuration of vibrating the water flow WF. Therefore, with a simple configuration that contributes to cost reduction and downsizing, pulsating water discharge that can feel a sense of volume even with a small amount of water and can also feel a pleasant stimulation feeling that the instantaneous flow rate of the water discharge greatly fluctuates. The shower device F1 that can be enjoyed is realized.

  The pulsation imparting means vibrates the water flow in a direction intersecting with the jetting direction, and varies the suction negative pressure amount of air in the aeration unit 43 using the vibration, thereby generating a force for sucking air into the aeration unit 43. It fluctuates. Therefore, the amount of air taken into the air mixing section 43 can be reliably changed with a simple configuration in which the suction negative pressure amount for sucking air into the air mixing section 43 is changed. Therefore, the instantaneous flow rate of the discharged water greatly fluctuates greatly with a simple configuration that contributes to cost reduction and miniaturization without using a pump or the like as a special means for fluctuating the air fed into the aeration unit 43. Pulsating water discharge that can feel such a pleasant stimulation can be realized.

  Further, in the shower apparatus F1 according to the present embodiment, a gas-liquid interface is formed at the downstream side of the air introduction hole 431a in the air mixing part 43, and the water flow WF injected from the throttle part 42 enters the gas-liquid interface. It is configured so that water containing bubbles is generated. The pulsation imparting means moves the position of the gas-liquid interface, thereby changing the amount of negative suction pressure of air in the air mixing part 43 and changing the amount of air taken into the air mixing part 43.

  In the present embodiment, the pulsation imparting means moves the position of the gas-liquid interface to ensure a sufficient amount of air taken in from the air introduction hole 431a or to reduce the amount of air taken in from the air introduction hole 431a. You can make it. Therefore, by moving the position of the gas-liquid interface, it is possible to reliably vary the amount of air suction negative pressure in the air mixing unit 43. In this way, the simple configuration of moving the gas-liquid interface to change the amount of negative suction pressure of air makes it possible to reliably change the amount of air taken in, and the instantaneous flow rate of discharged water will change greatly. Pulsating water discharge that can feel such a pleasant stimulation is realized.

  In the present embodiment, the pulsation imparting means moves the position of the gas-liquid interface to the upstream side and positions it so as to close the air introduction hole 431a, thereby suppressing the suction negative pressure amount in the air mixing section 43 and the air mixing section. The amount of air taken into 43 is suppressed.

  In the present embodiment, by changing the position of the gas-liquid interface, a sufficient amount of air taken in from the air introduction hole 431a is secured, or the amount of air taken in from the air introduction hole 431a is reduced. Yes. In order to greatly change the amount of air taken in from the air introduction hole 431a, the position of the gas-liquid interface is moved upstream to close the air introduction hole 431a. By moving the gas-liquid interface to such a position as to block the air introduction hole 431a in this way, the amount of air taken into the air mixing section 43 is made extremely small, and the fluctuation in the amount of air taken in is maximized. Therefore, it is possible to reliably vary the amount of air taken in, and it is possible to realize pulsating water discharge that can surely feel a pleasant stimulation feeling that the instantaneous flow rate of water discharge fluctuates greatly.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, a pulsation provision means peels the water flow WF injected from the throttle part 42 to the air mixing part 43 from the wall surface which comprises the throttle part 42, and water flow WF is by this flow peeling. The water flow WF is vibrated by forming a flow negative pressure part LPa between the wall and the wall surface. Therefore, this configuration also functions as a separation promoting means for separating the water flow injected from the throttle portion 42 to the air mixing portion 43 from the wall surface constituting the throttle portion 42.

  As described above, the water flow WF ejected from the throttle portion 42 is separated from the wall surface constituting the throttle portion 42, and the flow negative pressure portion LPa is formed between the water flow WF and the wall surface by the separation of the flow. Therefore, the water flow WF ejected from the throttle portion 42 can be vibrated by the action of the negative flow pressure portion LPa. Thus, since the water flow WF is vibrated with a simple configuration in which the water flow WF is separated from the wall surface to form the flow negative pressure portion LPa, the amount of air taken in can be varied with a very simple configuration. Therefore, without using a special means for vibrating the water flow WF, a simple structure that contributes to cost reduction and miniaturization can be surely felt a comfortable stimulation feeling that the instantaneous flow rate of the discharged water greatly fluctuates. It is possible to realize pulsating water spouting.

  Further, the pulsation imparting means of the present embodiment is formed upstream of the suction negative pressure part LPb for sucking air into the air mixing part 43 at the negative pressure part LPa. Thus, the flow negative pressure portion LPa is formed upstream of the suction negative pressure portion LPb, and therefore the flow negative pressure portion LPa generated by the separation of the water flow WF ejected from the throttle portion 42 from the wall surface. The negative pressure generation amount of the suction negative pressure portion LPb located on the downstream side can be changed by the negative pressure. Therefore, the water flow WF can be vibrated by the difference between the negative pressure in the flow negative pressure part LPa and the negative pressure in the suction negative pressure part LPb.

  Further, in the shower apparatus F1 according to the present embodiment, the air introduction hole 431a is formed only on the side opposite to the flow negative pressure part LPa, and the air sucked from the air introduction hole 431a does not enter the flow negative pressure part LPa. It is configured as follows. Thus, by devising the arrangement of the air introduction hole 431a and the flow negative pressure part LPa, a configuration for generating a negative pressure without mixing air into the flow negative pressure part LPa can be easily realized. The negative pressure can be generated with certainty.

  Further, in the shower device F1 according to the present embodiment, the throttle channel 421 that is flat with respect to the jet direction of the water stream WF is provided in the throttle unit 42 so that the water stream WF jetted to the aeration unit 43 becomes a film-like water stream. Is formed. By forming the throttle channel 421 in this way, the air sucked from the air introduction hole 431a does not enter the flow negative pressure part LPa by the film-like water flow injected from the throttle part 42 to the air mixing part 43. It is configured as follows.

  As described above, since the flat throttle channel 421 is formed in the throttle unit 42, the water flow WF ejected from the throttle channel 421 is a film-like water flow. Accordingly, since a film-like water flow can be interposed between the air introduction hole 431a and the negative flow pressure portion LPa, the air taken in from the air introduction hole 431a is blocked by the film-like water flow, It does not reach the pressure part LPa. In this way, with a simple configuration in which the cross-sectional shape of the throttle channel 421 is flattened, a configuration in which a negative pressure is generated without mixing air into the flow negative pressure portion LPa can be easily realized, and the required negative pressure Can be reliably generated.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, the pulsation provision means and the peeling side means form the convex part in the wall surface which comprises the throttle part 42, and the water flow WF injected from the throttle part 42 to the air mixing part 43 Is peeled off from the wall surface constituting the throttle part 42. More specifically, by forming an elbow portion EP having an elbow shape in the flow path from the water supply portion 41 to the throttle portion 42, a water flow WF injected from the throttle portion 42 to the aeration unit 43 is generated. The diaphragm portion 42 is configured to be peeled off from the wall surface. At least a part of the inner peripheral surface of the elbow part EP is connected so that the upstream inner surface 422a and the downstream inner surface 422b form a corner 421a.

  Thus, by forming a convex part on the wall surface which comprises the aperture | diaphragm | squeeze part 42, the abrupt surface change by a simple structure is realizable. Moreover, the flow path from the water supply part 41 to the throttle part 42 is formed into an elbow shape, and the elbow part EP is formed, so that the flow path is bent and the surface change of the flow path is realized. Furthermore, a part of the inner peripheral surface of the elbow part EP is connected so that the inner surface 422a on the upstream side and the inner surface 422b on the downstream side constitute the corner portion 421a, so that a steep surface change by a simple configuration can be achieved. Realized. Therefore, separation of the water flow WF flowing through the throttle portion 42 can be caused with a simple configuration, and the necessary negative pressure can be reliably generated.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, the water sprinkling part 44 is provided as a water discharging part. The water sprinkling part 44 is formed with a plurality of water sprinkling holes 443 for discharging bubble-mixed water so that shower water can be discharged. By configuring in this way, the user can enjoy shower water discharge that can feel a sense of volume even with a small amount of water and can also feel a pleasant stimulation feeling that the instantaneous flow rate of water discharge greatly fluctuates. it can. But if the present invention is grasped as a water discharging device, the embodiment is not restricted to shower device F1. It is also a preferable aspect to form a water discharge portion having a single water discharge hole as in a sanitary washing device, and to perform water discharge with both a sense of volume and a sense of stimulation from the single water discharge hole.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, the throttle flow path 421 is comprised so that it may shift to the wall surface side facing the wall surface in which the air introduction hole 431a as an opening is formed, and injects the water flow WF. By comprising in this way, the water flow WF is injected so that the space of the wall surface side in which the air introduction hole 431a is formed may be enlarged, and the space on the opposite side across the water flow WF may be reduced. Accordingly, the negative pressure generated in the suction negative pressure part LPb can be configured to be surely larger than the negative pressure generated in the flow negative pressure part LPa, and the water flow injected in a film shape can be vibrated reliably. be able to.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, the throttle flow path 421 injects a water flow radially so that the water flow to be injected may turn into the disk-shaped film-like water flow WFc connected over the perimeter. By injecting in this way, an end is not formed in the water flow injected from the throttle channel 421, and the end of the water flow does not interfere with the wall surface of the channel. Accordingly, it is possible to suppress a decrease in the flow velocity due to the end of the jetted water flow interfering with the wall surface of the flow path, and it is possible to reliably vibrate the entire film-like water flow.

  Moreover, in the shower apparatus F1 according to the present embodiment, the spray water virtual straight line obtained by extending the spray direction of the water sprayed from the throttle unit 42 does not interfere with the inner walls constituting the air mixing unit 43 and the water spray unit 44. It is configured to reach the position where the hole 443 is formed.

  With this configuration, the water sprayed from the throttle portion 42 reaches the position where the water spray holes 443 are formed without disturbing the flow depending on the inner walls constituting the air mixing portion 43 and the water sprinkling portion 44. . At the stage where water jetted through the throttle portion 42 enters the gas-liquid interface and becomes bubble mixed water, the bubbles in the bubble mixed water can be configured to have a substantially uniform diameter. It is possible to reach the position where the water spray holes 443 are formed with a uniform bubble diameter. In this way, when bubble mixed water containing bubbles having a substantially uniform bubble diameter is supplied to the water spray holes 443, a bubble flow or a slag flow can be formed immediately after being discharged from the water spray holes 443 and the water spray holes 443. . In this way, when the bubble mixed water formed as a bubble flow or a slag flow containing bubbles having a substantially uniform bubble diameter is discharged from the sprinkling holes, it is substantially orthogonal to the discharge direction without being mist like an annular flow. It is sheared in the direction and granulated almost uniformly. Therefore, water droplets that have been granulated to a relatively large and uniform particle size continuously land on the user, and the user can surely enjoy a shower with a feeling of bathing that feels like a large amount of rain. be able to.

  Subsequently, a shower apparatus according to a second embodiment of the present invention will be described with reference to FIG. FIG. 11 is a view showing a shower apparatus F2 according to the second embodiment of the present invention. FIG. 11A shows a plan view, FIG. 11B shows a side view, and FIG. (C) is a bottom view.

  As shown in FIG. 11A, the shower apparatus F2 is mainly constituted by a main body 6 having a substantially rectangular parallelepiped shape, and an opening 631 is formed in the upper surface 6a of the shower apparatus F2 (main body 6). As shown in FIG. 11B, a plurality of water spray holes 643 are formed in the lower surface 6b facing the upper surface 6a of the shower apparatus F2. As shown in FIG. 11C, in the case of this embodiment, 25 sprinkling holes 643 are formed in 5 rows × 5 columns.

  Subsequently, the shower device F2 will be described with reference to FIG. 12 which is a BB cross-sectional view of FIG. 11A and FIG. 13 which is a C arrow view of FIG. As shown in FIG. 12, the shower apparatus F <b> 2 includes a water supply unit 61, a throttle unit 62, an aeration unit 63, and a watering unit 64.

  The water supply unit 61 is a part for supplying water, and is a part for supplying water introduced from the water supply port 61 d to the throttle unit 62. A water supply means (water supply hose or the like) (not shown) can be connected to the water supply port 61d, and water supplied from the water supply means is supplied from the water supply part 61 to the throttle part 62.

  The throttle part 62 is provided on the downstream side of the water supply part 61 and is a part for reducing the flow passage cross-sectional area of the water supply part 61 and injecting the passing water downstream. The throttle unit 62 is provided with a single throttle channel 621. The throttle channel 621 is formed in a flat shape and a slit shape so that the direction passing through the paper surface of FIG.

  The state of the throttle channel 621 is shown in FIG. FIG. 13 is a C arrow view of FIG. As shown in FIG. 13, the throttle channel 621 is formed in a flat shape and a slit shape so that the sides along the upper surface 6a and the lower surface 6b of the main body 6 are long sides.

  Returning to FIG. 12, the description of other parts will be continued. The air mixing unit 63 is provided on the downstream side of the throttle unit 62, and is a portion where an opening 631 is formed for mixing air into water jetted through the throttle unit 62 to form bubble mixed water. is there.

  The water sprinkling part 64 (water discharge part) is provided in the downstream of the air mixing part 63, and is the part in which the several water spraying hole 643 for discharging bubble mixing water is formed.

  The water supply unit 61 has a side wall 61b and a side wall 61c. The side wall 61b and the side wall 61c are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the other side wall connected by the side wall 61b and the side wall 61c. Therefore, the water supply part 61 is formed so that the cross section of the flow path is a flat shape. A front wall surface 61a is provided at a boundary portion between the water supply unit 61 and the throttle unit 62, and the side walls 61b and 61c are connected to the front wall surface 61a.

  A throttle portion 62 is provided in a region beyond the front wall surface 61a on the downstream side. The throttle part 62 has a side wall 62b and a side wall 62c. The side wall 62b and the side wall 62c are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the other side wall connected by the side wall 62b and the side wall 62c. Therefore, the throttle part 62 is formed so that the cross section of the flow path becomes a flat shape. A partition wall 62a is provided at the boundary between the throttle unit 62 and the air mixing unit 63, and the side walls 62b and 62c are connected to the partition wall 62a. A flat and slit-shaped throttle channel 621 is formed in the partition wall 62a. FIG. 14 shows an enlarged view of a region D in the vicinity of the throttle channel 621. As shown in FIG. 14, the throttle channel 621 is formed with a convex portion 621 a that functions as a pulsation imparting unit or a separation promoting unit.

  An air mixing portion 63 is provided in a region beyond the partition wall 62a on the downstream side. The air mixing part 63 is opposed to the side wall 63b, the side wall 63b, the side wall 63c disposed relatively far from the side wall 63b, and the side wall 63d opposed to the side wall 63b and disposed relatively close to the side wall 63b. have. The side wall 63c is disposed on the water sprinkling part 64 side, and the side wall 63d is disposed on the throttle part 62 side, and a step part 63g that connects the side wall 63c and the side wall 63d is formed. The side walls 63b, 63c, and 63d are formed such that the length along the direction orthogonal to the direction in which water proceeds is longer than the other side walls that the side walls 63b, 63c, and 63d are connected to. Therefore, the aeration unit 63 is formed so that the cross section of the flow path is flat.

  The water sprinkling part 64 is provided in the area | region downstream from the side wall 63c. The water sprinkling part 64 has a side wall 64 b that forms the same surface as the side wall 63 b of the air mixing part 63. Furthermore, the water sprinkling part 64 has a side wall 64 c that forms the same plane as the side wall 63 c of the air mixing part 63. The side walls 64b and 64c are located so as to face the water supply port 61d, and are connected to the back side wall 64a that functions as the end of the flow path. A water spray hole 643 is formed in the side wall 64 c of the water spray part 64.

  The shower apparatus F2 which is 2nd embodiment of this invention has an effect equivalent to the shower apparatus F1 which is 1st embodiment by the structure mentioned above. In particular, in the shower apparatus F2 according to the present embodiment, the water flow jetted from the throttle unit 62 to the aeration unit 63 by forming the convex portion 621a on the wall surface constituting the throttle unit 62 as the pulsation imparting unit and the separation promoting unit. Is peeled off from the side wall 62c which is a wall surface constituting the throttle part 62.

  In this way, by forming the convex portion 621a on the side wall 62c constituting the aperture portion 62, a steep surface change can be realized with a simple configuration. Therefore, separation of the water flow flowing through the throttle portion 62 can be caused with a simple configuration, and the necessary negative pressure can be reliably generated.

  However, from the viewpoint of causing separation of the water flow, it is also preferable to provide a recess in the side wall 62c. A preferred example is shown in FIG. In the example shown in FIG. 15, the concave portion 621 b is formed on the wall surface constituting the throttle portion 62. As shown in FIGS. 14 and 15, by forming at least one of the concave portion 621 b and the convex portion 621 a on the side wall 62 c, the water surface jetted from the throttle portion 62 to the air mixing portion 63 is converted into the wall surface constituting the throttle portion 62. Can be peeled off.

  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.

4: Body 4A: Cavity 4Aa: Contact surface 4Ab: Concave 4Ac: Through hole 4B: Shower plate 4Ba: Contact surface 4Bb: Through hole 4Bc: Concave 4C: Water ejection piece 4Ca: Air introduction protrusion 4Cb: Flange 4Cd: Restriction protrusion 4a: Upper surface 4b: Lower surface 41: Water supply part 41d: Water supply port 42: Restriction part 43: Air mixing part 44: Sprinkling part 44a: Side wall 44c: Side wall 421: Restriction flow path 431: Opening 431a: Air introduction hole 443 : Water spray hole F1: Shower device WFc: Membrane water flow WF: Water flow AF: Air flow EP: Elbow part LPa: Flow negative pressure part LPb: Suction negative pressure part S1: Interface position S2: Interface position S3: Interface position 61: Water supply part 61a: Front wall surface 61b: Side wall 61c: Side wall 61d: Water supply port 62: Restriction part 62a: Partition wall 62b: Side wall 62c: Side wall 63: Air mixing part 63b: Side wall 63c Sidewall 63d: side walls 63 g: stepped portion 64: nozzle unit 64a: side wall 64b: side walls 64c: side wall 621: throttle channel 621a: convex portion 621b: concave portion 631: opening 643: nozzle holes F2: Shower device

Claims (6)

A shower device that discharges air mixed with air bubbles,
A water supply section for supplying water;
A throttle part provided on the downstream side of the water supply part, reducing the flow passage cross-sectional area than the water supply part, increasing the flow rate of water passing therethrough and injecting it downstream;
An air mixing part provided on the downstream side of the throttle part, in which an opening is formed for mixing air into water jetted through the throttle part to form bubble mixed water;
A water discharge part provided on the downstream side of the air mixing part, and having a plurality of water spray holes for discharging the bubble mixed water generated in the air mixing part,
Providing a peeling promoting means for peeling the water flow injected from the throttle part to the aeration unit from the wall surface constituting the throttle part;
The peeling promoting means is configured to be bent so as to peel from the wall surface by changing a traveling direction of the water flow passing through the throttle portion from the water supply portion,
A flow negative pressure part is formed between the water flow and the wall surface constituting the throttle channel by causing flow separation by the separation promoting means,
Utilizing the pressure difference between the negative pressure generated in the negative pressure portion between the flow and the negative pressure generated in the suction negative pressure portion in the vicinity of the opening for sucking the negative pressure into the air mixing portion, The bubble mixture discharged from the water discharge unit is caused by periodically varying the amount of air taken into the air mixing unit by vibrating the water flow injected from the throttle unit into the air mixing unit in a direction intersecting the injection direction. Pulsating water discharge by changing the instantaneous flow rate of water,
The opening and the suction negative pressure portion are formed only on the opposite side of the water flow negative pressure portion formed by the separation promoting means, and the water flow injected into the air mixing portion in the throttle portion Is formed so that the air drawn in from the opening does not enter the negative pressure portion between the flows. A shower device characterized by that. The narrowing part is the waterjet virtual straight ejection direction was stretched water injection from and the reaches the nozzle holes are formed positioned without interfering with the inner wall constituting the aeration unit and the ejection water unit The shower device according to claim 1, wherein the shower device is configured as described above.   The shower apparatus according to claim 1, wherein the throttle flow path is shifted toward a wall surface facing the wall surface where the opening is formed, and the water flow is jetted.   2. The shower device according to claim 1, wherein the throttle channel ejects the water flow radially such that the water flow to be ejected has a disk shape connected over the entire circumference. The separation facilitating means is constituted by an elbow part having an elbow shape in the flow path from the water supply part to the throttle part, and the water flow injected from the throttle part to the aeration unit is separated from the wall surface constituting the throttle part. The shower device according to claim 1, wherein the shower device is configured to be peeled off . The shower device according to claim 5, wherein at least a part of the inner peripheral surface of the elbow portion is connected so that an upstream surface and a downstream surface form a corner portion .