JP2011173084A - Shower device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shower device which makes one enjoy such shower of massive feeling like being exposed to rain of large drops and stably discharge water through all of water spray openings. <P>SOLUTION: The shower device F2 includes a water feed part 31, a throttle part 32 installed downstream of the water feed part and for spraying passing water to the downstream side, an air-mixing part 33 in which an opening 331 for mixing air in water sprayed through the throttle part, and forming cellular-mixed water is formed, and a water spray part 34 in which a plurality of water spray openings 343 for discharging the cellular mixing water are formed, and includes, a deceleration means for having a cross section change means to form so that it may become narrow by the throttle part side by making a cross section which intersects perpendicularly with a jet direction of water sprayed from a throttle part in an air mixing part vary in a direction along the surface in which the water spray hole is formed in the water spray part, and a speed dispersion means for standardizing velocity distribution generated by the deceleration means. <P>COPYRIGHT: (C)2011,JPO&INPIT

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.

  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 provided on the downstream side of the water supply unit, the flow passage cross-sectional area being reduced from that of the water supply unit, and the passing water being jetted downstream. And an aeration unit provided on the downstream side of the throttle unit, and formed with an opening for mixing air into water jetted through the throttle unit to form bubbled water, and the aeration unit And a watering part provided with a plurality of watering holes for discharging bubble-mixed water. In addition, the front row water sprinkling holes formed on the air mixing portion side among the plurality of water sprinkling holes are the water that has entered the gas-liquid interface between the water temporarily stored in the air mixing portion and the water sprinkling portion. A speed reducing means for reducing the speed until the air reaches the water pressure, the speed reducing means has a cross-sectional area perpendicular to the injection direction of the water jetted from the throttle portion in the air mixing portion, and a water spray hole is formed in the water sprinkling portion. By changing in the direction along the surface that is narrowed on the throttle part side, it is possible to reduce the number of water spray holes formed on the air mixing part side among the plurality of water spray holes formed on the water spray part. It is an excellent shower device that has solved the problem that water is hardly discharged.

  However, by adopting such a configuration, a new problem that has not existed in the past is that water becomes difficult to be discharged from the water spray holes arranged on the center side among the plurality of water spray holes formed in the water spray part. I found.

  The present invention has been made in view of such problems, and its purpose is to granulate into a relatively large and uniform particle size by supplying bubble mixed water with the bubble diameter kept as uniform as possible to the water spray holes. The water droplets are continuously landed on the user so that the user can enjoy a shower with a feeling of a large amount of rain, and the water can be discharged stably from all the water spray holes. An object of the present invention is to provide a shower device that can be used.

  In order to solve the above-mentioned problem, a shower apparatus according to the present invention is a shower apparatus that discharges bubble-containing water mixed with air, and is provided on a downstream side of the water supply section and a water supply section for supplying water. A throttle part for reducing the cross-sectional area of the flow channel relative to the water supply part, and jetting the passing water downstream, and water jetted through the throttle part provided downstream of the throttle part An air mixing portion in which an opening for forming air into the air mixing portion is formed, and a plurality of sprinkling holes provided on the downstream side of the air mixing portion for discharging the air mixing water, A water spray formed along the injection direction of the water sprayed from the throttle, and the jet from the throttle into the air-liquid interface between water and air temporarily stored in the air mixing part and the water spray. In which bubbled water is generated by the rushed water A speed reducing means for decelerating the water that has entered the gas-liquid interface until the water reaches the foremost water sprinkling hole formed on the side of the aeration part among the plurality of water sprinkling holes; The deceleration means has a cross-sectional area perpendicular to the injection direction of the water injected from the throttling portion in the air mixing portion in a direction along the surface where the water spray holes are formed in the water spray portion. The cross-sectional area changing means is formed so as to be narrowed on the throttle portion side by changing, and further, the water is decelerated by the cross-sectional area changing means so as to be orthogonal to the water injection direction and to spray water. In order to level the velocity distribution of the water generated in the direction along the surface where the holes are formed, a velocity dispersion means for dispersing the velocity of the water from the higher water velocity to the slower water velocity is provided. It is characterized by that.

  In the present invention, the water supplied from the water supply unit is jetted through the throttle unit toward the air mixing unit and the watering unit, and the water temporarily stored in the air mixing unit and the watering unit is a plurality of watering 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 sprinkling 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 water spray holes of the water sprinkling 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, 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, until the water jetted through the throttle portion and plunged into the gas-liquid interface reaches the front row water sprinkling hole formed on the air mixing portion side among the plurality of water sprinkling holes by the speed reducing means. It is configured so as to be decelerated during this time, so that it is surely avoided that the water that has entered the gas-liquid interface passes through the front row sprinkling holes formed on the front side as it is. be able to. Therefore, the bubble-mixed water generated by entering the gas-liquid interface is sufficiently decelerated so that it can be discharged from the front row sprinkling holes before reaching the front row sprinkling holes. Water can be discharged stably and evenly from all the water spray holes including.

  In the present invention, the speed reduction means is constituted by the cross-sectional area changing means formed so that the cross-sectional area perpendicular to the injection direction of the water jetted from the throttle portion is narrowed on the throttle portion side in the aeration unit. In the narrowed portion, the gas-liquid interface formed by temporarily storing the water jetted from the throttle portion in the water spray portion can be kept so as not to go further toward the throttle portion side. Therefore, the gas-liquid interface is surely positioned between the throttle part and the front row sprinkling holes formed in the water sprinkling part, and the water that has entered the gas-liquid interface is surely decelerated before reaching the front row sprinkling holes. Thus, water can be reliably discharged from all the water holes including the front row water holes.

  Further, in the present invention, the cross-sectional area changing means is configured by changing the cross-sectional area perpendicular to the water injection direction of the aeration unit in the direction along the surface where the water spray holes are formed. The flow direction when the water entering the interface is decelerated is the direction along the surface on which the water spray holes are formed, and is not the direction that intersects the surface on which the water spray holes are formed. Water flow is less likely to occur in the direction that intersects the surface. Therefore, it is easy for water to spread evenly through the water sprinkling holes formed in the water sprinkling part, for example, in the region where the front row sprinkling holes are formed, a water flow that does not go in the water discharge direction is generated, and the front row sprinkling holes are jumped over. Therefore, it is difficult to make a water flow that would cause the water to be discharged from all the water holes including the front row water holes.

  Furthermore, in the present invention, the cross-sectional area perpendicular to the water injection direction of the aeration part is changed in the direction along the surface on which the water spray holes are formed as the speed reducing means, so that the cross-sectional area perpendicular to the water injection direction is changed. Since the cross-sectional area changing means formed so as to become narrower on the throttle part side is adopted, the water entering the gas-liquid interface is orthogonal to the water injection direction until it reaches the sprinkling part, And in the direction along the surface where the sprinkling holes are formed, it has a speed distribution that the speed becomes faster at the center side and the speed becomes slower at the side end side, but in order to level the speed distribution It is configured to disperse the water speed from the higher water speed to the slower water speed, so the water entering the gas-liquid interface is perpendicular to the water injection direction and sprinkling holes are formed Certainly in the middle of the direction along the surface It can be decelerated. Therefore, it becomes easy to spread water uniformly to the water sprinkling holes formed in the water sprinkling part, and water can be stably and uniformly discharged from all the water sprinkling holes including the water sprinkling holes arranged on the center side of the water sprinkling part.

  In the shower device according to the present invention, the velocity dispersing means narrows the flow path by narrowing the flow path at the center side in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. It is also preferred to be configured to disperse the speed.

  In this preferred embodiment, the velocity of water is dispersed by narrowing the flow path at the center side in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. Therefore, the water speed is reliably dispersed from the center side where the water speed is high toward the side end side.

  Further, in the shower device according to the present invention, the speed dispersing means has a flow path at a center side in a direction perpendicular to the water injection direction and along the surface where the water spray holes are formed, rather than the side end side. It is also preferable that the rate of water is dispersed by increasing the rate of narrowing.

  In this preferred embodiment, the rate of water is increased because the ratio of narrowing the flow path is larger than the side end side at the center side in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. Since the water speed is reliably dispersed toward the side edge at the fast center side, and the water speed dispersed from the center side can be absorbed at the side edge side, the flow in the water injection direction is increased. The speed of water can be leveled without disturbance, and it is easy to spread the water evenly in the sprinkling holes formed in the sprinkling part, and it is stable from all the sprinkling holes including the sprinkling holes arranged at the center side of the sprinkling part. Water can be discharged evenly.

  Moreover, in the shower apparatus concerning this invention, it is also preferable that the said speed dispersion | distribution means is a rod-shaped protrusion which protrudes in a watering part.

  In this preferred embodiment, since the speed dispersing means is constituted by the rod-like protrusions protruding into the water sprinkling part, the water is directed in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. Speed is reliably distributed. The speed of water is dispersed not in the direction that intersects the surface where the water spray holes are formed, but in the direction along the surface where the water holes are formed, so that the flow in the water injection direction is not significantly disturbed. The water speed can be leveled, and water can easily reach the sprinkling holes formed in the sprinkling section, so that water can be stably and evenly distributed from all sprinkling holes including the sprinkling holes arranged in the center of the sprinkling section. It can be discharged.

  In the shower device according to the present invention, it is also preferable that the bar-shaped protrusion is formed such that a side surface facing the throttle portion is convex toward the throttle portion.

  In this preferred embodiment, the side surface of the rod-shaped protrusion that faces the throttle portion is formed so as to form a convex shape toward the throttle portion. It is possible to suppress the resistance of the water, and it is easy to spread water uniformly throughout the water sprinkling holes formed in the water sprinkling part, so that water can be stably and evenly distributed from all sprinkling holes including the water sprinkling holes arranged at the center of the water sprinkling part. Can be discharged.

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 CC cross section in (B) of FIG. It is the cross-sectional perspective view seen from the DD cross section side in (A) of FIG. It is a figure which shows DD in (A) of FIG. 1, Comprising: It is a figure which shows the flow of the water in a shower apparatus. It is an expanded sectional view which expands and shows the aeration part vicinity of FIG. It is an expanded sectional view which expands and shows the watering part vicinity of FIG. It is an expanded sectional view which expands and shows the watering part vicinity in the shower apparatus of the modification of this invention. It is sectional drawing which expands further the watering part shown in FIG. 6, and shows one rod-shaped protrusion vicinity.

  Next, a shower apparatus according to an embodiment of the present invention will be described with reference to FIG. 1A and 1B are diagrams showing a shower apparatus F2 according to an embodiment of the present invention, where FIG. 1A shows a plan view, FIG. 1B shows a side view, and FIG. ) Shows a bottom view. As shown in FIG. 1A, the shower apparatus F2 is mainly constituted by a main body 3 having a substantially rectangular parallelepiped shape, and an opening 331 is formed in the upper surface 3a of the shower apparatus F2 (main body 3). As shown in FIG. 1B, a plurality of sprinkling protrusions 342 are provided on the lower surface 3b facing the upper surface 3a of the shower apparatus F2. Each watering projection 342 is formed with a watering hole 343. As shown in FIG. 1C, a plurality of water spray protrusions 342 are provided on the lower surface 3 b of the main body 3. In the case of this embodiment, 35 sprinkling protrusions 342 are formed in 7 rows × 5 columns.

  Next, the shower device F2 will be described with reference to FIG. 2 which is a cross-sectional view taken along the line CC in FIG. As shown in FIG. 2, the shower apparatus F <b> 2 includes a water supply unit 31, a throttle unit 32, an aeration unit 33, and a watering unit 34.

  The water supply part 31 is a part for supplying water, and is a part for supplying water introduced from the water supply port 31 d to the throttle part 32. A water supply means (water supply hose or the like) (not shown) can be connected to the water supply port 31d, and water supplied from the water supply means is supplied from the water supply part 31 to the throttle part 32. The water supply part 31 has a side wall 31e and a side wall 31f as a part of the main body 3 along the water traveling direction, and the side wall 31e and the side wall 31f are arranged to be parallel to each other.

  The throttle part 32 is provided on the downstream side of the water supply part 31 and is a part for reducing the flow passage cross-sectional area of the water supply part 31 and injecting the passing water downstream. The throttle part 32 has a side wall 32e and a side wall 32f as a part of the main body 3 along the traveling direction of water, and the side wall 32e and the side wall 32f are arranged in parallel to each other. The throttle unit 32 is provided with a plurality of throttle channels 321. The throttle channel 321 is arranged in two stages along the direction from the side wall 32e to the side wall 32f. FIG. 11 shows how the throttle channel 321 is arranged. FIG. 11 is a view taken along arrow E in FIG. As shown in FIG. 11, ten throttle channels 321 are formed in a row in the upper stage, and are formed in a row in the lower stage. The lower throttle channel 321 is arranged so as to be positioned between the upper throttle channels 321, and the upper throttle channel 321 and the lower throttle channels 321 are connected to the closest throttle channel 321. The distances are alternately arranged so that the distances are substantially the same. In other words, each of the plurality of throttle channels 321 arranged in parallel across a plurality of upper and lower stages is positioned at an equal distance from a pair of throttle channels 321 provided in adjacent stages. Alternatingly arranged.

  Returning to FIG. 2, the description of other parts will be continued. The air mixing portion 33 is provided on the downstream side of the throttle portion 32, and is a portion where an opening 331 is formed for mixing air into water jetted through the throttle portion 32 to form bubble mixed water. is there. The aeration unit 33 has side walls 33ea and 33eb and side walls 33fa and 33fb as a part of the main body 3 along the water traveling direction. The side wall 33ea and the side wall 33fa are arranged to be parallel to each other. The side wall 33eb is a wall continuously provided on the downstream side of the side wall 33ea, and is disposed obliquely so as to widen the flow path toward the downstream side from the portion connected to the side wall 33ea. Similarly, the side wall 33fb is a wall continuously provided on the downstream side of the side wall 33fa, and is disposed obliquely so as to widen the flow path toward the downstream side from the portion connected to the side wall 33fa. ing.

  The watering part 34 is provided in the downstream of the air mixing part 33, and is the part in which the several watering hole 343 for discharging bubble mixing water is formed. The water spray hole 343 is formed in the water spray member 341 attached to the main body 3. The water spray member 341 is provided with a water spray protrusion 342, and the water spray protrusion 342 passes through a hole (not shown in the drawing) formed in the main body 3 and is exposed to the outside. The water sprinkling part 34 is further provided with a rod-like protrusion 344 that functions as a speed dispersion means for suppressing eddy currents generated in the water sprinkling part. The rod-like protrusions 344 are distributed between the watering holes 343 so as to be located at an equal distance from the watering holes 343 that are close to each other. The relationship between the water spray hole 343 and the rod-shaped protrusion 344 will be described later.

  As shown in FIG. 2, the side wall 31 e constituting the water supply unit 31, the side wall 32 e constituting the throttle unit 32, and the side wall 33 ea constituting a part of the aeration unit 33 are arranged on the same plane. Has been. The side wall 33eb constituting the remaining part of the aeration unit 33 is disposed obliquely so as to face the outer side surface of the main body 3, and is connected to the side wall 34e constituting the water sprinkling part 34. Similarly, the side wall 31f constituting the water supply part 31, the side wall 32f constituting the throttle part 32, and the side wall 33fa constituting a part of the air mixing part 33 are arranged on the same plane. The side wall 33 fb constituting the remaining part of the air mixing part 33 is arranged obliquely so as to face the outer side surface of the main body 3, and is connected to the side wall 34 f constituting the water sprinkling part 34.

  Subsequently, the shower device F2 will be described with reference to FIG. 3 which is a cross-sectional perspective view seen from the DD cross-section side in FIG. As illustrated in FIG. 3, the water supply unit 31 includes a side wall 31 b and a side wall 31 c that connect the side wall 31 e and the side wall 31 f. The side wall 31b and the side wall 31c are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the side wall 31e and the side wall 31f. Therefore, the water supply part 31 is formed so that the cross section of the flow path is a flat shape. A front wall surface 31a is provided at a boundary portion between the water supply unit 31 and the throttle unit 32, and the side walls 31e, 31f, 31b, and 31c are connected to the front wall surface 31a. The front wall surface 31a includes a portion extending from the side wall 31b to the side wall 31c and a portion extending from the side wall 31c to the side wall 31b.

  A throttle portion 32 is provided in a region beyond the front wall surface 31a on the downstream side. The throttle part 32 has a side wall 32b and a side wall 32c that connect the side wall 32e and the side wall 32f. The side wall 32b and the side wall 32c are formed so that the length along the direction orthogonal to the direction in which water proceeds is longer than the side wall 32e and the side wall 32f. Accordingly, the cross section of the flow passage surrounded by the side walls 32b, 32c, 32e, and 32f of the throttle portion 32 is formed to have a flat shape. A partition wall 32a is provided at a boundary portion between the throttle unit 32 and the air mixing unit 33, and the side walls 32e, 32f, 32b, and 32c are connected to the partition wall 32a. The partition wall 32a has a plurality of through holes, thereby forming a plurality of throttle channels 321.

  An air mixing portion 33 is provided in a region beyond the partition wall 32a on the downstream side. The aeration unit 33 is a side wall 33b that connects the side walls 33ea, 33eb and the side walls 33fa, 33fb, a side wall that connects the side walls 33ea, 33eb and the side walls 33fa, 33fb, and is opposed to the side wall 33b and relatively far from the side wall 33b. The side wall 33c, the side wall 33ea, 33eb and the side wall 33fa are connected to the side wall 33fa, and the side wall 33d is opposed to the side wall 33b and is positioned relatively close to the side wall 33b. The side wall 33c is disposed on the water sprinkling part 34 side, and the side wall 33d is disposed on the throttle part 32 side, and a step part 33g that connects the side wall 33c and the side wall 33d is formed. The side walls 33b, 33c, and 33d are formed such that the length along the direction orthogonal to the direction in which water proceeds is longer than the side walls 33ea and 33eb and the side walls 33fa and 33fb. Therefore, the aeration unit 33 is formed so that the cross section of the flow path is flat.

  The water sprinkling part 34 is provided in the area | region downstream from the side wall 33c. The water sprinkling part 34 has a side wall 34b that connects the side wall 34e and the side wall 34f and forms the same surface as the side wall 33b of the air mixing part 33. Further, the water sprinkling part 34 has a side wall 34 c that is a side wall that connects the side wall 34 e and the side wall 34 f and forms a surface that is one step backward from the side wall 33 c of the air mixing part 33. The side walls 34b, 34c, 34e, and 34f are connected to a back side wall 34a that is positioned so as to face the water supply port 31d and functions as an end of the flow path. Furthermore, the water sprinkling part 34 has the water sprinkling member 341 arrange | positioned in the part of the main body 3 facing the side wall 34b so that it may contact | abut with the side wall 34c. The water sprinkling member 341 is fitted into a recess provided in the main body 3, and the surface facing the side wall 34 b is configured to form the same surface as the side wall 33 c of the aeration unit 33. The water sprinkling member 341 has the water sprinkling protrusion 342 as described above, and is attached to the main body 3 such that the tip end portion of the water sprinkling protrusion 342 protrudes from the main body 3.

  Next, the flow of water inside the shower device F1 will be described with reference to FIG. FIG. 4 is a diagram showing the DD cross section of FIG. 1A in a simplified manner, and is a diagram showing a state of water inside when water is supplied to the shower apparatus F1.

  As shown in FIG. 4, when water is supplied to the water supply unit 31 from a water supply means (not shown) at a predetermined pressure or higher, the water is injected downstream through a throttle channel 321 formed in the throttle unit 32. The water jetted from the throttle channel 221 to the downstream air mixing part 33 and the water sprinkling part 34 is the side walls 33b, 33c, 33d, 33e, 33f of the air mixing part 33 and the side walls 34b, 34c, 34d of the water sprinkling part 34. In order not to interfere with 34e, the spray water virtual straight line BW1 extends to the sprinkling hole 343 located farthest. The jet water virtual straight line BW1 is a virtual straight line obtained by extending the jet direction of water jetted from the throttle portion 32.

  Thus, when water is ejected from the throttle unit 32, water temporarily accumulates in at least a part of the water sprinkling unit 34 and the air mixing unit 33, and a gas-liquid interface BW3 that is an interface between the accumulated water and air is formed. It is formed. Therefore, the water jetted along the jet water imaginary straight line BW1 enters the water accumulated from the gas-liquid interface BW3, and the air present in the air mixing part 33 is entrained to generate the bubble mixed water BW. The bubble-mixed water BW is divided into each water flow BW2 and discharged to the outside from each water spray hole 343. Since the opening 331 is formed in the air mixing part 33, the water jetted along the jet water imaginary straight line BW1 rushes into the water accumulated from the gas-liquid interface BW3, and the air present in the air mixing part 33 Even if it is involved, the state in which air is always supplied can be maintained.

  Thus, 1st embodiment of this invention is provided in the downstream of the water supply part 31 and the water supply part 31 for supplying water, reduces a flow-path cross-sectional area rather than the water supply part 31, and passes the water which passes therethrough. A throttle part 32 for jetting downstream and an opening 331 provided on the downstream side of the throttle part 32 for mixing air into the water jetted through the throttle part 32 to form bubble mixed water BW are formed. And the water sprinkling part 34 provided on the downstream side of the air mixing part 33 and formed with a plurality of water sprinkling holes 343 for discharging the bubble mixed water BW. The jet water virtual straight line BW1 obtained by extending the jet direction of the water jetted from the inner wall (side walls 33b, 33c, 33d, 33e, 33f, side walls 34b, 34c, 34e, 34f, watering member 341) and dried The inner wall (side walls 33b, 33c, 33d, 33e, 33f, and side walls 34b) that reach the position where the water sprinkling holes 343 are formed without being discharged and the water sprayed from the throttle part 32 constitutes the air mixing part 33 and the water sprinkling part 34. , 34c, 34e, 34f, and the sprinkling member 341) can reach the inlet of the sprinkling hole 343 without changing the advancing direction, thereby providing the shower device F1 that discharges the bubble mixed water BW mixed with air. Is.

  In this embodiment, the water supplied from the water supply unit 31 is jetted toward the air mixing unit 33 and the water sprinkling unit 34 through the throttle unit 32 and temporarily stored in the air mixing unit 33 and the water spraying unit 34. Water is discharged to the outside from the plurality of water spray holes 343 of the water spray part 33. The water jetted through the throttle unit 32 is the water and air temporarily stored in the air mixing unit 33 and the water sprinkling unit 34 with the air taken in from the opening 331 formed in the air mixing unit 33. It enters into the gas-liquid interface BW3 to become the bubble mixed water BW and is sprayed from the plurality of water spray holes 343 of the water sprinkling part 34.

  In the case of the present embodiment, the spray water virtual straight line BW1 obtained by extending the spray direction of the water sprayed from the throttle portion 32 forms the water spray hole 343 without interfering with the inner walls constituting the air mixing portion 33 and the water spray portion 34. The water sprayed from the throttle part 32 forms a water spray hole 343 without being disturbed by the inner wall constituting the air mixing part 33 and the water spray part 34. To the specified position. That is, the water sprayed from the throttle part 32 is sprayed along the water spray surface in which the water spray holes are formed, and the bubble mixed water is sequentially discharged from the water spray holes without stirring the flow.

  At the stage where the water jetted through the throttle unit 32 enters the gas-liquid interface BW3 and becomes the bubble mixed water BW, the bubbles in the bubble mixed water BW can be configured to have a substantially uniform diameter. The water BW can reach the position where the water spray holes 343 are formed with the substantially uniform bubble diameter.

  When the bubble-mixed water BW containing bubbles having a substantially uniform bubble diameter is supplied to the water spray holes 343, a bubble flow or a slag flow may be formed immediately after being discharged from the water spray holes 343 and the water spray holes 343. it can. When the bubble-mixed water BW that includes bubbles having a substantially uniform bubble diameter and is formed as a bubble flow or a slag flow is discharged from the sprinkling holes 343, the discharge direction is substantially the same as that of the annular flow without being misted. It is sheared in an orthogonal direction and granulated substantially uniformly.

  The water sprinkling part 34 is further provided with a rod-like protrusion 344 that functions as a speed dispersing means for leveling the speed distribution generated in the air mixing part 33. The rod-like protrusions 344 are distributed between the watering holes 343 so as to be located at an equal distance from the watering holes 343 that are close to each other. The positional relationship between the water spray holes 343 and the rod-shaped protrusions 344 will be described with reference to FIG.

  As shown in FIG. 5, rod-like protrusions 344 having a circular cross section are arranged in a row in the middle of each row where the water sprinkling holes 343 are arranged in a row as seen from the traveling direction of the water flow WF flowing in the water sprinkling portion 34. Has been. Also, when viewed from the direction orthogonal to the traveling direction of the water flow WF, rod-shaped protrusions 344 having a circular cross section are arranged in a row in the middle of each row in which the water spray holes 343 are arranged in a row.

  As described above, the embodiment of the present invention is provided on the downstream side of the water supply unit 31 and the water supply unit 31 for supplying water, and the flow passage cross-sectional area is smaller than that of the water supply unit 31 so that the passing water is on the downstream side. And an opening 331 provided on the downstream side of the throttle portion 32 for mixing air into the water jetted through the throttle portion 32 to form bubble mixed water. An air mixing part 33 and a watering part 34 provided on the downstream side of the air mixing part 33 and formed with a plurality of watering holes 343 for discharging bubble mixed water are ejected from the throttle part 32. The water imaginary straight line in which the water injection direction is extended is the inner wall (side walls 33b, 33c, 33d, 33ea, 33eb, 33fa, 33fb, side walls 34b, 34c, 34e, 34f) constituting the air mixing part 33 and the water sprinkling part 34. , Watering member 341 To a position where the nozzle holes 343 without interfering formed as configured to reach, there is provided a shower apparatus F2 to discharge bubbly water obtained by mixing the air. That is, the water sprayed from the throttle part 32 is sprayed along the water spray surface in which the water spray holes are formed, and the bubble mixed water is sequentially discharged from the water spray holes without disturbing the flow.

  Moreover, in the shower apparatus F2 which concerns on this embodiment, the water which rushed into the gas-liquid interface is formed in the air mixing part 33 side most in the some water spray hole 343 by devising the structure of the air mixing part 33. It functions as a decelerating means for decelerating before reaching the front row watering hole 343. Specifically, a cross-sectional area changing means is configured by forming a cross-sectional area perpendicular to the injection direction of the water jetted from the throttle unit 32 in the aeration unit 33 so as to narrow on the throttle unit 32 side. The function of the speed reduction means is realized by the cross-sectional area changing means. In this way, the cross-sectional area changing means is configured by forming the cross-sectional area perpendicular to the injection direction of the water jetted from the throttle unit 32 in the aeration unit 33 so as to narrow on the throttle unit 32 side. In the narrowed portion, the gas-liquid interface formed by temporarily storing the water jetted from the throttle portion 32 in the water sprinkling portion 34 can be suppressed so as not to go further toward the throttle portion 32 side. Therefore, the gas-liquid interface is between the throttle portion 32 and the frontmost water sprinkling hole 343 formed in the water sprinkling portion 34 (generic name of the water sprinkling hole 343 formed on the most narrow portion 32 side among the plurality of water sprinkling holes 343). In addition, the water that has entered the gas-liquid interface can be surely decelerated before reaching the front row water sprinkling hole 343, and water is reliably discharged from all the water sprinkling holes 343 including the front row sprinkling holes 343. Can be made.

  Moreover, in the shower apparatus F2 which concerns on this embodiment, the surface (side wall 34c) in which the water spraying hole 343 is formed in the water spraying part 34 in the cross-sectional area orthogonal to the injection direction of the water sprayed from the throttle part 32 in the air mixing part 33. In the direction along the surface). By comprising in this way, the flow direction when the water which entered the gas-liquid interface is decelerated becomes a direction along the surface where the water spray holes 343 are formed, and on the surface where the water spray holes 343 are formed. Since it is no longer the direction of crossing, the flow of water is less likely to occur in the direction crossing the surface where the water spray holes 343 are formed. Accordingly, water easily spreads uniformly through the water sprinkling holes 343 formed in the water sprinkling portion 34, and a water flow not directed in the water discharge direction is created in the region where the front row sprinkling holes 343 are formed. Since it becomes difficult to make a water flow that jumps over 343, water can be reliably discharged from all the watering holes 343 including the frontmost watering hole 343.

  Moreover, in the shower apparatus F2 which concerns on this embodiment, the cross-sectional area change means is comprised by changing gradually the cross-sectional area orthogonal to the injection direction of the water injected from the throttle part 32 in the air mixing part 33. FIG. With this configuration, the flow of water after entering the gas-liquid interface in the aeration unit 33 is along a side surface that gradually changes. Accordingly, the water flow after entering the gas-liquid interface in the air mixing part 33 is less likely to be disturbed such as stagnating or swirling, and water can be reliably discharged from all the watering holes 343 including the front row watering holes 343. .

  Moreover, in the shower apparatus F2 which concerns on this embodiment, the speed | rate for suppressing the velocity distribution of the water flow which generate | occur | produces in the sprinkling part 34 with the water which rushed into the gas-liquid interface by arrange | positioning the rod-shaped protrusion 344 in the sprinkling part 34. It constitutes a dispersion means. The rod-like protrusion 344 as the speed dispersing means will be described in detail.

  In the water sprinkling part, the friction received from the wall surface causes a speed difference between the central part and the side wall part of the water flow. As shown in FIG. 5, the side wall portion is lower than the center portion due to the influence of wall surface friction, and has a convex velocity distribution toward the water sprinkling portion. The rod-shaped protrusion 344 divides the water flow WF generated in the water sprinkling part 34 by the water that has entered the gas-liquid interface into the diversion flow WF1, WF2, WF3, WF4. By configuring the rod-shaped protrusions 344 in this way, the velocity distribution in the sprinkler 34 can be leveled. More specifically, by subdividing the water flow generated in the water sprinkling part 34 by the water that has entered the gas-liquid interface, the water flow in the central part has a high speed and resistance when passing through the subdivided flow path. Therefore, the speed of the central portion and the side end portions can be leveled by allowing the flow to flow toward the side wall portion with low speed and low resistance. Therefore, when the leveled water flow reaches the plurality of sprinkling holes 344, water is discharged from the sprinkling holes 344 at a uniform speed, and a shower with a good comfort can be provided to the user.

  Moreover, the expanded sectional view which expands and shows the watering part vicinity in the shower apparatus of the modification of this invention is shown in FIG. In FIG. 7, the bar-like protrusion 444a on the center side is formed thick, and the bar-like protrusion 444b on the side end side is formed thin. That is, they are arranged densely on the center side and sparsely arranged on the side wall side. In this aspect, the speed of water is increased by making the rate of narrowing the flow path larger than the side end side at the center side in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. Since it is comprised so that it may disperse | distribute, the speed | rate of water is more reliably disperse | distributed from the center side where the speed of water is fast toward the side end side where the speed of water is slow.

  As shown in FIG. 8, in the shower apparatus F <b> 2 according to the present embodiment, the rod-shaped protrusion 344 is specifically formed in a columnar shape so that the side surface facing the throttle portion 32 is convex toward the throttle portion 32. Is formed. By comprising in this way, the resistance at the time of the water flow WF which advances the inside of the sprinkling part 34 hitting the rod-shaped protrusion 344 and subdivided into the diversion flow WF1, WF1, WF2, WF2 can be suppressed, Water easily spreads evenly to the watering holes formed, and water can be stably and uniformly discharged from all the watering holes including the watering holes arranged on the center side of the watering part.

  Thus, in the shower apparatus F2 which concerns on this embodiment, by providing the rod-shaped protrusion 344 as a speed dispersion | distribution means for leveling the speed distribution of the water flow which generate | occur | produces in a sprinkling part by the water which rushed into the gas-liquid interface, By leveling the speed of the water flow reaching the holes 343 and evenly spreading the water to the water holes formed in the water spray part, water can be stably and uniformly discharged from all the water holes. . As described above, in the shower device F2 according to the present embodiment, the flow is disturbed by the inner walls constituting the air mixing part 33 and the water spraying part 34 until the water that has entered the gas-liquid interface reaches the watering hole 343 primarily. In the water sprinkling part, the velocity distribution of the water flow can be leveled. Accordingly, it is possible to suppress the disturbance of water discharge due to the generation of the velocity distribution of the water flow in the sprinkler. As described above, in the shower apparatus F2 according to the present embodiment, by smoothing the velocity distribution of the water flow supplied to the sprinkling holes 343, a shower having a good bathing comfort is used by discharging water from the sprinkling holes at a uniform speed. Can be provided.

  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.

F2: Shower device 3: Main body 3a: Upper surface 3b: Lower surface 31: Water supply part 31a: Front wall surface 31b: Side wall 31c: Side wall 31d: Water supply port 31e: Side wall 31f: Side wall 32: Restriction part 32a: Partition wall 32b: Side wall 32c: Side wall 32e: Side wall 32f: Side wall 33: Side wall 33b: Side wall 33c: Side wall 33d: Side wall 33ea: Side wall 33eb: Side wall 33fa: Side wall 33fb: Side wall 33g: Stepped part 34: Sprinkling part 34a: Side wall 34b: Side wall 34c: Side wall 34e: Side wall 34f: Side wall 321: Restriction channel 331: Opening 341: Sprinkling member 342: Sprinkling protrusion 343: Sprinkling hole 344: Bar-shaped protrusion 44a: Side wall 44e: Side wall 44f: Side wall 441: Opening 443: Sprinkling hole 444a: Bar-shaped protrusion 444b: rod-like protrusion BW: bubble mixed water BW1: jet water virtual straight line BW2: water flow BW3: gas-liquid interface WF: water flow F1, WF2: minute water flow

Claims (5)

A shower device that discharges air mixed with air bubbles,
A water supply unit for supplying water;
A throttle part provided on the downstream side of the water supply part, for reducing the cross-sectional area of the flow channel relative to the water supply part, and for injecting the passing water to the downstream side; provided on the downstream side of the throttle part; An air mixing part in which an opening is formed for mixing air into water injected through the part to form bubble mixed water;
A watering part provided on the downstream side of the air mixing part and having a plurality of watering holes for discharging bubble mixed water formed along the injection direction of water injected from the throttle part,
Bubbles mixed water is generated by the water jetted from the throttle portion entering the gas-liquid interface between water and air temporarily stored in the air mixing portion and the water sprinkling portion, and A speed reduction means for decelerating the water that has entered the gas-liquid interface until it reaches the foremost water sprinkling hole formed on the side of the aeration part among the plurality of water sprinkling holes,
The speed reducing means is configured to change a cross-sectional area perpendicular to the injection direction of the water injected from the throttle portion in the air mixing portion in a direction along the surface where the water spray holes are formed in the water spray portion. , Having a cross-sectional area changing means formed so as to become narrower on the throttle part side,
Furthermore, in order to equalize the velocity distribution of the water generated in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed by decelerating the water by the cross-sectional area changing means. A shower apparatus comprising speed dispersion means for dispersing the water speed from a higher water speed to a slower water speed.   The speed dispersing means is configured to disperse the speed of water by narrowing the flow path at the center side in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. The shower device according to claim 1, wherein:   The speed dispersing means is configured to increase the rate of narrowing the flow path more than the side end side at the center side in the direction perpendicular to the water injection direction and along the surface where the water spray holes are formed. The shower device according to claim 2, wherein the shower device is configured to disperse the speed.   The shower device according to claim 2, wherein the speed dispersing means is a rod-like protrusion that protrudes into the water sprinkling part.   The shower apparatus according to claim 4, wherein the bar-shaped protrusion is formed such that a side surface facing the throttle portion has a convex shape toward the throttle portion.

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