JP2012005567A - Shower device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower device for continuously applying water droplets havine a relatively large uniform droplet size on a user to allow the user to enjoy a massive shower as if the user has a shower of voluminous large drops of rain.SOLUTION: The shower device F1 is constituted such that a channel reaching a sprinkling part 44 from an air mixing part 43 has an inner wall surface curved gently along an advance direction of a water current to allow friction force acting on bubble-mixed water from the inner wall surface of the channel to increase during passage of the bubble-mixed water, and deceleration energy is gradually given to the bubble-mixed water.

Description

  The present invention relates to a shower apparatus.

  In this technical field, a shower device is known in which air is mixed into water using the so-called ejector effect and discharged as bubble-containing water. Since the shower device disperses water flowing into the device into a plurality of water spray holes and discharges water, when air is mixed into the discharged water, air is mixed into the water flowing into the device. It is comprised so that it may disperse | distribute to each watering 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. In this shower device, after water flows into the housing shell, air is mixed to form bubble mixed water, and a plurality of water spray holes are formed so that the bubble mixed water is distributed over the entire front surface of the disk-shaped housing shell. Therefore, the turbulent flow generating expansion part is arranged in the traveling direction of the bubble mixed water, and the bubble mixed water collides with the turbulent flow generating expanded part to change the direction, and the bubble mixed water is transferred to the housing shell. I try to spread all over the front.

  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 the following Patent Document 2 generates bubble mixed 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.

JP-T-2006-509629 Japanese Patent No. 3747323

  By the way, when performing shower water discharge by mixing air into water and forming bubble mixed water, how to set the feeling of use when the bubble mixed water hits the user is determined by the user taking a shower It is important as a texture to feel. 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.

  In view of such a situation, the inventors of the present invention have sought to provide a shower device that enables shower water discharge with a comfortable feeling of bathing that has a sense of volume that is taking a large amount of rain. On the other hand, in the above-described conventional technology, as described above, the water droplets having a non-uniform particle size realize the feeling of hitting the user, so that the feeling of bathing with a feeling of volume like being exposed to a large amount of rain. It did not provide shower water.

  The present inventors paid attention to the state of bubble-containing water immediately after being discharged from the water sprinkling holes and from the water sprinkling holes in order to provide this new shower comfort. Since the bubble mixed water in the water sprinkling hole and immediately after being discharged from the sprinkling hole is in a gas-liquid two-phase flow state in which two different types of fluids, gas and liquid, are mixed and moving in the same channel pipe, It is considered that the fluid flows in one of the typical flow modes, namely, a bubble flow, a slag flow, or an annular flow. Since these flow modes are different in the state of mixing of bubbles, it is considered that the state of granulation after being discharged from the water spray holes is different. In view of this, the present inventors have found that the bubble diameter of the bubble-mixed water supplied to the water spray holes is not uniform in the above-described conventional technology. As a result, it is assumed that water droplets with a non-uniform particle diameter have hit the user, and the bubble diameter of the bubble-containing water supplied to the water spray holes is made uniform. I thought it needed to be controlled.

  However, when water is supplied to the shower device, it is normally supplied from a single supply port, and air is mixed into the water supplied from the single supply port in this way to generate bubble-containing water. Is. On the other hand, since there are a large number of sprinkling holes, the advancing direction of the bubbling water is changed and distributed to each sprinkling hole, which stimulates the bubbling water and grows the bubbles. It is very difficult to discharge from each watering hole without making it.

  The present inventors have solved such a problem and continuously supply water droplets granulated to a relatively large and uniform particle diameter by supplying air-bubble mixed water with the air bubble diameter kept as uniform as possible to the sprinkling holes. The basic concept of the present invention has been conceived for the purpose of providing a shower device that allows the user to land on the water and enjoy a shower with a large amount of comfort that the user is taking a large amount of rain. It is. Specifically, a flow path from the aeration unit to the water discharge part is formed along the traveling direction of the water flow ejected from the throttle part, and the flow path is configured not to be bent sharply.

As described above, the shower device conceived by the present inventors continuously supplies water droplets granulated to a relatively large and uniform particle diameter by supplying the bubble-containing water with the bubble diameter kept as uniform as possible to the sprinkling holes. The user is allowed to land on the water, and the user can enjoy a shower with a feeling of bathing that feels like a large amount of rain. Specifically, a water supply unit for supplying water, and a throttle unit that is provided downstream of the water supply unit, reduces the flow passage cross-sectional area than the water supply unit, and injects the passing water downstream. An air mixing part provided on the downstream side of the throttle part, in which air is mixed into the water flow jetted through the throttle part to form air bubbles mixed water, and on the downstream side of the air mixing part And a water discharge portion provided with a plurality of sprinkling holes for discharging the bubble-containing water. However, by adopting such a configuration, as described above, a flow path from the aeration unit to the water discharge unit is formed along the traveling direction of the water flow ejected from the throttle unit, and the flow channel is bent sharply. The present inventors have found that the bubble diameter in the bubble-mixed water supplied to each sprinkling hole may not be uniform even when configured so as not to. In particular, when a large number of water spray holes are provided to increase the size of the water discharge part, it is necessary to increase the initial speed of the water flow ejected from the throttle part, making it difficult to reliably supply the bubble-containing water to the water spray holes arranged on the near side. Become. As described above, the present inventors may find it difficult to uniformly discharge water from each water sprinkling hole and to allow the user to continuously land water droplets having a relatively large and uniform particle size. Found.
The present invention has been made in view of such problems, and the object thereof is to provide a relatively large and uniform particle size by more reliably supplying bubble mixed water with the bubble diameter kept as uniform as possible to the water spray holes. It is intended to provide a shower device that allows a user to continuously drop water droplets that have been granulated into a water droplet so that the user can enjoy a shower with a feeling of volume that feels like a large amount of rain. .

  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, increases the flow rate of water passing therethrough, and injects it downstream, and a water flow that is provided downstream of the throttle part and 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 And a water discharge part in which a plurality of water spray holes are formed. The water supplied from the water supply unit is radially diverted after being diverted in a radial direction, air is mixed in the air mixing unit to form bubble mixed water, and further proceeds radially, The water is discharged from the plurality of water spray holes distributed on the surface intersecting with the introduction direction of the water supplied from the water supply unit. A flow path from the aeration unit to the water discharge unit is formed radially along the traveling direction of the water flow ejected radially from the throttle unit. The flow path is formed such that the width in the height direction is substantially the same, and the inner wall surface on the side where the plurality of water spray holes are formed in the water discharge section is jetted from the throttle section. It is formed so as to be inclined so as to gradually change the traveling direction of the bubble-mixed water along the traveling direction of the water flow, interfering with the imaginary straight line of the jet water extending the traveling direction.

  In the present invention, water supplied from the water supply unit is jetted toward the air mixing unit and the water discharge unit through the throttle unit, and the water temporarily stored in the air mixing unit and the water discharge unit is a plurality of water discharge units. It is discharged to the outside from the sprinkling holes. The water jetted through the throttle unit is a gas-liquid interface between water and air temporarily stored in the air mixing unit and the water discharging unit, with the air taken in from the opening formed in the air mixing unit. By entering the water, it becomes bubble mixed water and is sprayed from a plurality of sprinkling holes of the water discharge portion. In the case of the present invention, a flow path from the aeration unit to the water discharge unit is formed along the traveling direction of the water flow ejected from the throttle unit. The flow path is formed to be inclined so that the inner wall surface on the side where a plurality of water spray holes are formed interferes with the imaginary straight line of the jet water and gradually changes the traveling direction of the bubble mixed water along the traveling direction of the water flow. Therefore, 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 wall surfaces constituting the air mixing part and the water spray part. Furthermore, in the present invention, since the flow paths are formed so that the widths in the height direction are substantially the same, the flow is not disturbed by the sudden expansion of the flow paths.

  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, 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.

  Further, in the present invention, in order to suppress the vortex generated in the water sprinkling part due to the water that has entered the gas-liquid interface, the flow path from the air mixing part to the water discharging part is the inner wall surface of the flow path when the bubble mixed water passes. Thus, the frictional force acting on the bubble mixed water is increased. More specifically, the inner wall surface on the side where a plurality of water spray holes are formed in the water discharge part interferes with the imaginary straight line of the jet water, and gradually changes the traveling direction of the bubble-mixed water along the traveling direction of the water flow. It is formed to tilt. By comprising in this way, the vortex | eddy_current which generate | occur | produces when the water flow which passed the water sprinkling hole and reached | attained the inner wall surface of the water sprinkling part back side can be suppressed. As described above, the present invention is configured so that the flow of water that has entered the gas-liquid interface is not disturbed by the inner walls constituting the air mixing part and the watering part until the water first reaches the watering hole. Further, it is possible to prevent the water that reaches the water sprinkling holes from swirling due to the water flow that has reached the inner wall surface on the back side of the water sprinkling portion being swirled, by gradually decelerating the water flow. Therefore, it is possible to suppress the occurrence of bubbles colliding due to the formation of vortex flow in the water sprinkling section, and the generation of bubbles with a non-uniform bubble diameter. The bubble diameter of the supplied bubble-mixed water can be made uniform.

  Further, in the present invention, when the bubble mixed water advances through the flow path from the air mixing portion to the water discharge portion, the deceleration energy is gradually given to the bubble mixed water. At this time, the speed can be adjusted so as to be an appropriate speed for the bubble mixed water to enter the sprinkling holes. In particular, in the present invention, the water supplied from the water supply part is radially changed from the direction of the water after being diverted from the throttle part. Since it is configured to be discharged, a water spray hole is arranged as close as possible to the water supply unit, and it is desired to prevent the water discharge from falling out. In this way, even when the water discharge part is enlarged by providing a large number of water spray holes and the initial velocity of the water flow ejected from the throttle part is increased, the water mixed in the air bubbles is surely inserted into the water spray hole arranged near the water supply part. Can be supplied.

  As described above, in the present invention, more consideration is given to the suppression of bubble growth in the water discharge section, and the supply of bubble mixed water to each water spray hole is made more reliable. Therefore, the bubble diameter of the bubble-mixed water supplied to the water spray holes can be made more uniform, and water droplets that have been granulated to a relatively large and uniform particle diameter are continuously landed on the user. It is possible to make sure that the user enjoys a shower with a feeling of bathing that feels like a large amount of rain.

  Moreover, in the shower apparatus which concerns on this invention, the spray water virtual straight line which extended the advancing direction of the water flow sprayed from the said aperture | diaphragm | squeeze part is downstream rather than the water spray hole formed in the most upstream side among these water spray holes. On the side, it is also preferable that the inner wall surface is inclined so as to interfere with the inner wall surface of the flow path.

  In this preferable aspect, since the jet water virtual straight line interferes with the inner wall surface of the flow path on the downstream side of the water spray hole formed on the most upstream side, the jet is made at least before reaching the water spray hole formed on the most upstream side. The virtual water straight line is configured not to interfere with the inner wall surface of the flow path. Therefore, collision of bubbles contained in the bubble-mixed water can be suppressed, and bubble-mixed water having a uniform bubble diameter can be supplied to the water spray holes.

  Further, in the shower apparatus according to the present invention, the spray water imaginary straight line obtained by extending the traveling direction of the water flow sprayed from the throttle portion does not intersect the flow path side inlet of each of the plurality of water spray holes. It is also preferable that the wall surface is inclined.

  In this preferred embodiment, since the jet water imaginary straight line is configured not to intersect with the respective inlets of the plurality of water spray holes, the portion with the fastest flow rate of the bubbling water formed by the water flow jetted from the throttle portion is sprinkled. Do not directly collide with the hole entrance. Therefore, it is possible to reliably prevent the deceleration energy from being suddenly applied to the bubble-mixed water, and to more reliably suppress the bubble growth and supply the bubble-mixed water to each sprinkling hole.

  Moreover, in the shower apparatus which concerns on this invention, it is also preferable that the diameter by the side of the said flow path side of each of these watering holes is expanded so that it may spread rather than the internal diameter of each of these watering holes.

  In this preferred embodiment, the diameter of the inlet of the water spray hole is expanded so as to be wider than the inner diameter of the water spray hole. It can comprise so that it may hit the inclined enlarged diameter part. Therefore, it is possible to reliably prevent the deceleration energy from being suddenly applied to the bubble-mixed water, and to more reliably suppress the bubble growth and supply the bubble-mixed water to each sprinkling hole.

  Moreover, in the shower apparatus which concerns on this invention, it is also preferable that the said opening is formed so that it may connect with the inner wall face of the said flow path facing the said inner wall face in the side in which these watering holes are formed.

  In this preferred embodiment, since the opening is formed so as to communicate with the inner wall surface facing the inner wall surface on the side where the plurality of water spray holes are formed, the throttle portion is on the side on which the plurality of water hole is formed. It can be brought close to the inner wall surface. Therefore, by injecting the water flow injected from the throttle portion close to the inner wall surface on the side where the plurality of water spray holes are formed, the flow of the bubble mixed water can be made along the inner wall surface, It is reliably prevented that deceleration energy is suddenly applied to the bubble-containing water, and the bubble growth is suppressed and the bubble-containing water is supplied to each water spray hole more reliably.

  Further, in the shower device according to the present invention, the angle at which the inner wall surface of the flow path is inclined with respect to the imaginary straight line of the water flow that extends the traveling direction of the water flow that is jetted from the throttle portion is the downstream side of the flow path. Is preferably formed to be larger than the upstream side of the flow path.

  In this preferred embodiment, the angle at which the inner wall surface of the flow path is inclined is formed so that the downstream side is larger than the upstream side, so that the deceleration energy applied to the upstream side and the downstream side can be made different. By making the angle of inclination of the inner wall surface relatively gentle on the upstream side, it is possible to moderately decelerate without giving excessive decelerating energy to the bubble mixed water with a high flow velocity. On the downstream side, by making the angle of inclination of the inner wall relatively steep, by giving a relatively large deceleration energy for reliably decelerating the bubble mixed water in a state where the flow velocity is lowered, it is possible to reliably decelerate the bubbles. Collisions can be suppressed.

  Further, in the shower device according to the present invention, the flow path is configured so that a frictional force acting on the bubble mixed water increases from an inner wall surface on the side where the plurality of water spray holes are formed in the water discharge portion. It is also preferable that it is curved in an arc shape so that the side on which the plurality of water spray holes are formed is convex.

  In this preferable aspect, since the flow path is curved so that the side on which the plurality of water spray holes are formed is convex, the inner wall surface facing the first inner wall surface is the traveling direction of the water flow injected from the throttle portion. It is curving in the direction away from the imaginary straight line of jet water. In addition, when water is discharged downward from the plurality of water spray holes, the bubbles contained in the bubble mixed water rise by buoyancy and move to the inner wall surface facing the first inner wall surface. Therefore, by curving the inner wall surface facing the first inner wall surface in a direction away from the jet water imaginary straight line, the bubbles raised by the buoyancy are moved downstream along the inner wall surface. Therefore, the bubbles that have moved to the inner wall surface facing the first inner wall surface are less likely to stay, and the staying bubbles can be prevented from being connected and growing. Furthermore, since the flow path curved in an arc shape is formed over the entire area from the air mixing section to the water discharge section, the bubble mixed water can be reliably decelerated over the entire flow path.

  Moreover, in the shower apparatus which concerns on this invention, it is also preferable that all the said watering holes are formed in the area | region where the said flow path is curving in circular arc shape.

  In this preferred embodiment, since the plurality of water sprinkling holes are all formed in the region where the flow path is curved in the arc shape, it is ensured that the bubble-mixed water that has been decelerated reliably in the region curved in the arc shape is in the sprinkling hole. Can be supplied.

  According to the present invention, by supplying the bubble-containing water with the bubble diameter kept as uniform as possible to the water spray holes more reliably, the water droplets having a relatively large and uniform particle diameter are continuously attached to the user. It is possible to provide a shower device that allows the user to enjoy a shower with a feeling of volume that feels like a large amount of rain.

It is a figure which shows the shower apparatus which concerns on embodiment of this invention, Comprising: (A) has shown the side view, (B) has shown the bottom view. It is sectional drawing which shows the AA cross section in (B) of FIG. It is an expanded sectional view which expands and shows the aeration part vicinity shown in FIG. It is a figure which shows typically a water discharging part from an air mixing part.

  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 embodiment of this invention is demonstrated referring FIG. 1A and 1B are diagrams showing a shower apparatus F1 according to an embodiment of the present invention, in which FIG. 1A shows a side view and FIG. 1B shows a bottom view. As shown in FIG. 1, the shower apparatus F1 is mainly constituted by a main body 4 having a substantially disk shape, and a water supply pipe 41d is provided on the upper surface 4a of the shower apparatus F1 (main body 4).

  As shown in FIG. 1A, the main body 4 of the shower apparatus F1 includes a cavity 4A in which a water supply pipe 41d is attached and a shower plate 4B in which a watering protrusion 442 (watering hole 443) is provided. Its outer shape is configured. As shown in FIG. 1B, a plurality of water spray protrusions 442 are provided on the lower surface 4 b of the main body 4. Each of the plurality of water spray protrusions 442 is formed with a water spray hole 443. In the case of this embodiment, the watering protrusion 442 and the watering hole 443 are arrange | positioned radially.

  Subsequently, the shower device 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. 2, the shower apparatus F1 is configured by a cavity 4A and a shower plate 4B.

  The cavity 4A is a member that forms the outer shape of the main body 4 together with the shower plate 4B, and a contact surface 4Aa with the shower plate 4B is formed on the opposite side of the upper surface 4a of the main body 4. The contact surface 4Aa is annularly formed along the outer periphery of the cavity 4A. Inside the contact surface 4Aa, a side wall 44b that forms a water sprinkling portion 44 (water discharge portion) is formed. The water supply pipe 41d is introduced into the cavity 4A from the upper surface 4a side, passes through the side wall 44b, and protrudes to a position facing the shower plate 4B. A throttle part 42 is formed at the end of the water supply pipe 41d on the shower plate 4B side. A gap is formed between the water supply pipe 41d and the shower plate 4B, and this gap forms a throttle channel 421.

  The cavity 4A has a hollow shape, and an opening 431 communicates with the internal space 432 thereof. The opening 431 is an opening through which the water supply pipe 41d passes, and a gap is formed between the water supply pipe 41d and air is introduced into the internal space 432 from this gap. A gap is also formed between the end of the water supply pipe 41d and the side wall 44b, and this gap functions as the air introduction hole 431a. The air introduction hole 431 a communicates with the internal space 432. Therefore, the air introduced into the internal space 432 from the opening 431 is introduced from the air introduction hole 431a to the air mixing unit 43.

  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 watering protrusions 442 and watering holes 443 are radially formed. The contact surface 4Ba opposite to the lower surface 4b of the region where the water spray protrusion 442 and the water spray hole 443 are formed is formed to contact the contact surface 4Aa of the cavity 4A. The contact surface 4Ba is formed in an annular shape along the outer periphery of the cavity 4A. Inside the contact surface 4Ba, a side wall 44c that forms the water spray portion 44 is formed. The side wall 44c corresponds to the bottom surface of a circular recess 4Bb formed from the contact surface 4Ba toward the lower surface 4b.

  When the abutting surface 4Ba of the shower plate 4B and the abutting surface 4Aa of the cavity 4A are brought into contact with each other, a gap is formed between the recess 4Bb of the shower plate 4B. It is comprised so that. The water sprinkling part 44 of this embodiment is curved and formed so that the lower surface 4b side where the water sprinkling holes 443 are formed is convex. The shower plate 4B is formed to be bent in a bowl shape so that the vicinity of the center is a vertex and the lower surface 4b side is convex.

  Next, the aeration unit 43 will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view of the vicinity of the aeration unit. As shown in FIG. 3, an opening 431 is formed between the water supply pipe 41d and the cavity 4A. Air that has passed through the opening 431 is introduced into the internal space 432. An air introduction hole 431a is formed between the end portion of the water supply pipe 41d and the cavity 4A. The air introduced into the internal space 432 is introduced into the aeration unit 43 through the air introduction hole 431a.

  The water supplied from the water supply pipe 41d is introduced into the throttle portion 42 formed at the end portion of the water supply pipe 41d. A throttle channel 421 is formed between the end portion of the water supply pipe 41d and the shower plate 4B. Since the end portion of the water supply pipe 41d is circular, the throttle channel 421 is also formed in an annular shape. The water supplied from the water supply pipe 41d passes through the throttle part 42 and is ejected radially and in a film form from the annular throttle channel 421.

  An air introduction hole 431 a is formed adjacent to the throttle channel 421. Therefore, air is drawn into the air mixing part 43 from the air introduction hole 431a by the water jetted from the throttle channel 421. The water jetted from the throttle channel 421 travels from the aeration unit 43 toward the water sprinkling unit 44, and makes the water sprinkling unit 44 full. The water jetted from the throttle channel 421 enters the water that stays in this way, and the air drawn in from the air introduction hole 431a is entrained to generate bubble-containing water.

  As described above, by assembling the cavity 4A and the shower plate 4B, the shower apparatus F1 includes a water supply pipe 41d that is a water supply section, a throttle section 42, an air mixing section 43, and a water spray section 44. Composed.

  The water supply pipe 41d as a water supply part is a part for supplying water, and is a part for supplying the introduced water to the throttle part 42. A water supply means (not shown) can be connected to the water supply pipe 41d, and water supplied from the water supply means is supplied from the water supply pipe 41d to the throttle section 42.

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

  The air mixing unit 43 is provided on the downstream side of the throttle unit 42, and an opening 431 and an air introduction hole 431a are formed for mixing air into water jetted through the throttle unit 42 to form bubble mixed water. It is a part that has been.

  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. The water spray hole 443 of the present embodiment is formed so as to connect and penetrate the side wall 44c of the water spray part 44 and the water spray protrusion 442 formed on the lower surface 4b which is the outer surface of the shower plate 4B. The end of the water sprinkling hole 443 on the side wall 44c side is countersunk, and an enlarged diameter portion 443a is formed. The enlarged diameter portion 443a is formed so as to have a diameter gradually wider than the diameter of the other part of the sprinkling hole 443.

  Subsequently, the air mixing unit 43 to the watering unit 44 will be described with reference to FIG. FIG. 4 is a diagram schematically illustrating the water discharge portion from the air mixing portion. As shown in FIG. 4, the water flow WF jetted from the throttle channel 421 of the throttle unit 42 proceeds through the air mixing unit 43 while entraining the air introduced from the air introduction hole 431a to generate bubble mixed water, Proceed to the sprinkler 44. Since the water sprinkling part 44 is gently curved upward in the figure, the bubble mixed water traveling through the water sprinkling part 44 advances while being given deceleration energy due to frictional force from the side wall 44c.

  Accordingly, the bubble-mixed water traveling through the water sprinkling portion 44 proceeds while gradually decelerating, and is discharged from the water spray holes 443. In the present embodiment, the jet water imaginary straight line WL obtained by extending the jet direction of the water flow jetted from the throttle channel 421 is downstream of the water spray holes 443 formed at the most upstream side among the plurality of water spray holes 443. , The side wall 44c of the water sprinkling part 44, which is the inner wall surface of the flow path, interferes. In addition, the water spray portion 44 is curved and the side wall 44c is inclined so that the spray water imaginary straight line does not intersect with the enlarged diameter portion 443a that is an inlet on the flow path side of each of the plurality of water spray holes 443.

  In this embodiment, the water sprinkling part 44 is curved so that the side wall 44b and the side wall 44b draw a single arc. By curving so as to draw a single arc in this way, it is possible to continue to uniformly apply deceleration energy to the bubble-mixed water traveling through the sprinkling unit 44, and to decelerate the bubble-mixed water traveling through the sprinkling unit 44 Can do. From the viewpoint of surely preventing turbulent flow due to folding when bubbles in the bubbled water do not collide with each other and the bubbled water reaches the end of the watered part 44, the watered part 44 closer to the air mixed part 43. It is also preferable to make the curve of the water spray part gentler and to make the curve of the watering part far from the aeration part 43 steep.

  As described above, the shower apparatus F1 according to the present embodiment is a shower apparatus that discharges bubble-mixed water in which air is mixed, and includes a water supply pipe 41d as a water supply section that supplies water and a downstream side of the water supply section. A throttle part 42 that is provided downstream of the throttle part 42 and is injected downstream through the throttle part 42. The air mixing part 43 in which an air introduction hole 431a is formed as an opening for mixing air into the water stream to be formed into bubble mixed water, and provided downstream of the air mixing part 43. And a water sprinkling part 44 as a water spouting part in which a plurality of water sprinkling holes 443 for discharging the generated bubble-mixed water are formed. A flow path from the aeration unit 43 to the end of the sprinkling unit 44 is formed along the traveling direction of the water flow WF ejected from the throttle channel 421 of the throttle unit 42. The flow path from the air mixing part 43 to the end of the water sprinkling part 44 is such that when the bubble mixed water passes, the frictional force acting on the bubble mixed water increases from the side wall 44c which is the inner wall surface of the flow path. The side wall 44c is gently curved along the traveling direction, so that deceleration energy is gradually applied to the bubble mixed water.

  In the present embodiment, water supplied from a water supply pipe 41 d that is a water supply unit is jetted toward the air mixing unit 43 and the water spraying unit 43 through the throttle unit 42, and temporarily supplied to the air mixing unit 43 and the water spraying unit 44. The water stored in the water is discharged from the plurality of water spray holes 443 of the water sprinkling part 44 to the outside. The water jetted through the throttle channel 421 of the throttle unit 42 is temporarily supplied to the air mixing unit 43 and the water sprinkling unit 44 together with the air taken in from the air introduction hole 431a formed in the air mixing unit 43. By entering the gas-liquid interface between the water stored in the air and the air, the water is mixed with bubbles and is sprayed from the plurality of water spray holes 443 of the water sprinkling part 44. In the case of this embodiment, a flow path is formed from the air mixing section 43 to the end of the water sprinkling section 44 along the traveling direction of the water flow WF ejected from the throttle section 42, and the flow path is along the traveling direction of the water flow WF. Since the side wall 44c of the water spraying portion 44, which is the inner wall surface, is gently curved, the flow of water sprayed from the throttle portion 42 is disturbed depending on the inner wall surfaces constituting the air mixing portion 43 and the water spraying portion 44. Without reaching the position where the water spray hole 443 is formed.

  At the stage where water jetted through the throttle channel 421 of the throttle unit 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. The mixed water can reach the position where the water spray holes 443 are formed with the substantially 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 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 this embodiment, in order to suppress the vortex generated in the water sprinkling part 44 by the water that has entered the gas-liquid interface, the flow path from the air mixing part 43 to the water sprinkling part 44 is used when the bubble mixed water passes. The frictional force acting on the bubble mixed water is increased from the inner wall surface of the flow path. More specifically, the side wall 44c, which is the inner wall surface, is gently curved along the direction of water flow, so that deceleration energy is gradually given to the bubble-containing water. By comprising in this way, the eddy current which generate | occur | produces when the water flow which passed the sprinkling hole 443 and reached | attained the inner wall surface of the sprinkling part 44 back side can be suppressed. As described above, in this embodiment, the flow of water that has entered the gas-liquid interface is not disturbed by the inner walls constituting the air mixing part 43 and the water spray part 44 until the water reaches the water spray hole 443 primarily. In addition, the water flow that reaches the inner wall surface on the back side of the water sprinkling portion 44 is turned back to prevent the water that reaches the water sprinkling holes 443 from swirling secondarily by gradually reducing the water flow. can do. Therefore, it is possible to suppress the occurrence of bubbles colliding due to the formation of vortex flow in the water sprinkling part 44 and the growth of the bubble diameter to generate bubbles with a non-uniform bubble diameter. The bubble diameter of the bubble mixed water supplied to the hole 443 can be made uniform.

  Further, in the present embodiment, when the bubble mixed water advances through the flow path from the air mixing portion 43 to the water sprinkling portion 44, deceleration energy is gradually given to the bubble mixed water. When reaching the hole 443, the speed can be adjusted so as to be an appropriate speed for the bubble mixed water to enter the water sprinkling hole 443. Accordingly, even when the water spray 443 is enlarged by providing a large number of water spray holes 443 as in the present embodiment, and the initial velocity of the water flow WF ejected from the throttle channel 421 of the throttle unit 42 is increased, it is disposed on the near side. It is possible to reliably supply the bubble mixed water to the water spray holes 443. As described above, in the present embodiment, further consideration is given to the suppression of bubble growth in the sprinkling section 44, and the supply of bubble-mixed water to each sprinkling hole 443 is made more reliable. Therefore, the bubble diameter of the bubble-mixed water supplied to the sprinkling holes 443 can be made more uniform, and water droplets granulated to have a relatively large and uniform particle diameter can be continuously worn by the user. It is possible to make it more reliable to let the user enjoy a shower with a feeling of bathing that feels like a large amount of rain.

  Moreover, the flow path from the air mixing part 43 to the end of the sprinkling part 44 is formed so that the width in the height direction is substantially the same. The side wall 44c, which is the inner wall surface on the side where the plurality of water spray holes 443 are formed in the water sprinkling part 44, interferes with the jet water virtual straight line WL obtained by extending the traveling direction of the water flow WF jetted from the throttle part 42, and the water flow WF It is formed to be inclined so as to gradually change the traveling direction of the bubble mixed water along the traveling direction. Since the flow path from the air mixing part 43 to the end of the water sprinkling part 44 is formed so that the width in the height direction is substantially the same width, the flow may be disturbed by the sudden expansion of the flow path. Absent. In the present embodiment, the water supplied from the water supply pipe 41d, which is a water supply unit, is radially diverted and then sprayed radially from the throttle channel 421 of the throttle unit 42, and further progresses radially after forming the bubble-mixed water. Since the water is discharged from the plurality of water spray holes 443 that are dispersedly arranged, the water spray holes 443 are disposed in the vicinity of the center as close as possible to the water supply pipe 41d to prevent the discharge of the water discharge. . Thus, even if it is a case where the sprinkling part 44 is enlarged by providing many sprinkling holes 443 and the initial velocity of the water flow injected from the throttle part 42 is increased, it is disposed near the water supply pipe 41d which is a water supply part. It is possible to reliably supply the bubble mixed water to the water spray holes 443.

  Further, in the shower apparatus F1 according to the present embodiment, the flow path from the aeration unit 43 to the end of the water sprinkling unit 44 is a side wall that is a first inner wall surface on the side where a plurality of water sprinkling holes 443 are formed in the water sprinkling unit 44. The side wall 44c is gently curved so that the frictional force acting on the bubble mixed water increases from 44c. By comprising in this way, it can decelerate gradually, supplying a bubble mixing water reliably to the watering hole 443, and making it discharge.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, the flow path from the air mixing part 43 to the terminal of the water sprinkling part 44 is curved so that the side in which the some water sprinkling hole 443 is formed may become convex. By comprising in this way, the side wall 44b which is an inner wall surface which opposes the side wall 44c is curving in the direction away from the injection water virtual straight line WL which extended the advancing direction of the water flow WF injected from the throttle part 42. . When water is discharged downward from the plurality of sprinkling holes 443, the bubbles contained in the bubble mixed water rise by buoyancy and move to the side wall 44b facing the side wall 44c. Therefore, by curving the side wall 44b opposite to the side wall 44c in a direction away from the jet water imaginary straight line WL, the bubbles raised by the buoyancy move downstream along the side wall 44b. Therefore, the bubbles that have moved to the side wall 44b are less likely to stay, and the staying bubbles can be prevented from being connected and growing.

  Moreover, in the shower apparatus F1 according to the present embodiment, the flow path from the aeration unit 43 to the end of the sprinkling unit 44 is curved in an arc shape over the whole from the aeration unit 43 to the sprinkling unit 44. By comprising in this way, bubble mixed water can be decelerated reliably over the whole flow path.

  Moreover, in the shower apparatus F1 which concerns on this embodiment, circular arc shape is formed of the single circular arc. By comprising in this way, bubble mixed water can be decelerated reliably and uniformly over the whole flow path from the air mixing part 43 to the terminal of the water sprinkling part 44. By making the degree of deceleration constant in this way, it is possible to reliably decelerate while further suppressing the collision of bubbles.

  Moreover, in the shower apparatus F1 according to the present embodiment, the jet water virtual straight line WL obtained by extending the traveling direction of the water flow WF jetted from the throttle channel 421 of the throttle unit 42 is the most upstream side of the plurality of water spray holes 443. On the downstream side of the water sprinkling hole 443 formed in the side wall 44c, the side wall 44c is inclined so as to interfere with the side wall 44c which is the inner wall surface of the flow path. By configuring in this way, the jet water virtual straight line WL is configured not to interfere with the inner wall surface of the flow path until at least the water sprinkling hole 443 formed at the most upstream side is reached. Therefore, collision of bubbles contained in the bubble-mixed water can be suppressed, and bubble-mixed water having a uniform bubble diameter can be supplied to the water spray holes 443.

  Further, in the shower apparatus F1 according to the present embodiment, the jet water virtual straight line WL obtained by extending the traveling direction of the water flow WF jetted from the throttle channel 421 of the throttle unit 42 is an inlet on the channel side of each of the water spray holes 443. The side wall 44c is inclined and formed so as not to intersect with the (expanded diameter portion 443a). With this configuration, the portion with the fastest flow rate of the bubble-mixed water formed by the water flow WF ejected from the throttle portion 42 does not directly collide with the inlet of the sprinkling hole 443. Therefore, it is possible to reliably prevent the deceleration energy from being suddenly applied to the bubble-mixed water, and to more reliably suppress the bubble growth and supply the bubble-mixed water to each sprinkling hole 443.

  Moreover, in the shower apparatus F1 according to the present embodiment, the diameter of the plurality of water spray holes 443 on the flow path side is increased so as to be wider than the inner diameter of each of the plurality of water spray holes 443, thereby forming a diameter-enlarged portion 443a. . By configuring in this way, even if the portion with the fastest flow rate of the bubble-mixed water directly collides with the vicinity of the inlet of the water sprinkling hole 443, it can be configured to hit the gently expanded portion of the diameter. Therefore, it is possible to reliably prevent the deceleration energy from being suddenly applied to the bubble-mixed water, and to more reliably suppress the bubble growth and supply the bubble-mixed water to each sprinkling hole 443.

  Further, in the shower apparatus F1 according to the present embodiment, the air introduction hole 431a as the opening is formed on the side wall 44b which is the inner wall surface of the flow channel facing the side wall 44c which is the inner wall surface on the side where the water spray holes 443 are formed. It is formed so as to communicate. With this configuration, the throttle channel 421 of the throttle unit 42 can be brought close to the side wall 44c that is the inner wall surface on the side where the plurality of water spray holes 443 are formed. Therefore, the water flow WF ejected from the throttle portion 42 is ejected in the vicinity of the side wall 44c on the side where the plurality of water spray holes 443 are formed, so that the flow of the bubble mixed water is along the side wall 44c. Thus, it is possible to reliably prevent the deceleration energy from being suddenly applied to the bubble-mixed water, and to more reliably suppress the bubble growth and supply the bubble-mixed water to the water sprinkling holes 443.

  In the shower apparatus F1 according to the present embodiment, the angle at which the side wall 44c, which is the inner wall surface of the flow path, is inclined with respect to the jet water imaginary straight line WL in which the traveling direction of the water flow WF jetted from the throttle portion 42 is extended. The downstream side of the passage is formed to be larger than the upstream side of the passage.

  In this preferred embodiment, the angle at which the inner wall surface of the channel is inclined (the angle of the tangent to the curved channel) is formed so that the downstream side is larger than the upstream side. Different deceleration energy can be applied. By making the angle of inclination of the inner wall surface relatively gentle on the upstream side, it is possible to moderately decelerate without giving excessive decelerating energy to the bubble mixed water with a high flow velocity. On the downstream side, by making the angle of inclination of the inner wall relatively steep, by giving a relatively large deceleration energy for reliably decelerating the bubble mixed water in a state where the flow velocity is lowered, it is possible to reliably decelerate the bubbles. Collisions can be suppressed.

  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 4B: Shower plate 4Ba: Contact surface 4Bb: Recess 4a: Upper surface 4b: Lower surface 41d: Water supply pipe 42: Throttle section 43: Air mixing section 44: Water spray section 44b: Side wall 44c : Side wall 421: Restricted flow path 431: Opening 431 a: Air introduction hole 432: Internal space 442: Sprinkling protrusion 443: Sprinkling hole 443 a: Expanded portion F 1: Shower device WF: Water flow AF: Air flow WL: Jet water virtual straight line

Claims (8)

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 to mix air into the water flow injected 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,
The water supplied from the water supply unit is radially diverted after being diverted in a radial direction, air is mixed in the air mixing unit to form bubble mixed water, and further proceeds radially, Discharged from the plurality of sprinkling holes dispersedly arranged on the surface intersecting the introduction direction of the water supplied from the water supply unit,
A flow path from the aeration unit to the water discharge unit is radially formed along the traveling direction of the water flow radially ejected from the throttle unit,
The flow path is formed such that the width in the height direction is substantially the same, and the inner wall surface on the side where the plurality of water spray holes are formed in the water discharge section is jetted from the throttle section. The shower device is formed so as to incline so as to gradually change the traveling direction of the bubble-mixed water along the traveling direction of the water flow by interfering with the jet water virtual straight line in which the traveling direction of the water is elongated .   The jet water imaginary straight line is formed so that the inner wall surface is inclined so that it interferes with the inner wall surface of the flow path on the downstream side of the water spray hole formed on the most upstream side of the plurality of water spray holes. The shower device according to claim 1, wherein the shower device is provided.   The inner wall surface is formed so as to be inclined so that a jet water imaginary straight line obtained by extending the traveling direction of the water flow jetted from the throttle portion does not intersect with the inlet on the channel side of each of the plurality of water spray holes. The shower device according to claim 1.   2. The shower device according to claim 1, wherein a diameter of each of the plurality of water spray holes on the flow path side is expanded so as to be larger than an inner diameter of each of the plurality of water spray holes.   The shower device according to claim 1, wherein the opening is formed so as to communicate with an inner wall surface of the flow path facing the inner wall surface on the side where the plurality of water spray holes are formed. .   The angle at which the inner wall surface of the flow path inclines with respect to the imaginary straight line of water flow that extends the traveling direction of the water flow that is jetted from the throttle portion is smaller on the downstream side of the flow path than on the upstream side of the flow path. The shower device according to claim 1, wherein the shower device is formed to be large.   The flow channel has the water spray holes formed in the water discharge portion so that a frictional force acting on the bubble mixed water increases from an inner wall surface on the side where the water spray holes are formed. The shower device according to claim 1, wherein the shower device is curved in an arc shape so that a side thereof is convex.   The shower apparatus according to claim 7, wherein all of the plurality of water spray holes are formed in a region where the flow path is curved in an arc shape.

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