JP5435415B1 - shower head - Google Patents

Abstract

A shower head capable of suppressing the generation of swirl of bubble-containing water in a watering chamber and discharging the bubble-containing water as a relatively clean linear flow.
A shower head according to the present invention includes a water supply unit 6, a throttle channel 14a for accelerating water supplied from the water supply unit 6 and injecting the water radially around the injection center point C. An air mixing part 16 that is provided downstream of the throttle channel 14a to generate bubble mixed water, a water spraying surface side part 12 in which water spraying holes 12c are formed, and a back surface that forms the water spraying surface side part 12 and the water spraying chamber 18 The rear side portion 20 extends from the rear side portion 20 toward the water sprinkling surface side portion 12 on the straight line in the traveling direction of the bubble mixed water ejected from the throttle channel 14a. It is characterized by including a first wall portion 20c that forms a flow path 18a that can flow along the water spray surface side portion 12 between itself and the water spray surface side portion 12.
[Selection] Figure 9

Description

  The present invention relates to a shower head, and more particularly to a shower head that discharges bubble-containing water mixed with air.

  Conventionally, as a shower device, for example, as described in Patent Literature 1, a shower device that discharges air bubbles mixed with air by sucking air by accelerating water in the shower head It has been known.

  Furthermore, as described in Patent Document 2, the air is sucked in while accelerating and spraying water toward the water spray plate (jet disk), and the bubble mixed water mixed with the air collides with the water spray plate. There is known a shower head that flows so as to spread radially in a watering chamber and is discharged from watering holes formed in a watering plate.

JP2010-162356 Special table 2006-509629

However, in the shower head described in Patent Document 2, air is sucked in while accelerating and spraying water toward a water spray plate (jet disk), and the bubble mixed water mixed with the air collides with the water spray plate and then radiates. Since it is flowing, the air collides and merges to increase the bubbles, and there is a problem that the air cannot be mixed into the water with high efficiency.
Therefore, in order to mix air into the water with high efficiency, a plurality of throttle portions for accelerating the water are provided in the central part of the watering chamber so as to open radially with a space between each other, so that the bubble-mixed water is radiated in the radial direction. We examined injection while accelerating linearly. However, when the bubble-mixed water is jetted in this way, the bubble-mixed water sprayed radially along the water spray plate from a certain throttle part tends to collide with the outer peripheral wall of the water spray chamber and turn in the outer circumferential direction, In addition, it is easy to generate a vortex flow by joining with the flow of bubble-containing water jetted independently from the throttle portion adjacent to a certain throttle portion, and the state where this vortex flow is generated, that is, the bubble-containing water has a swirl direction component. There is a problem that water is discharged from the water spray hole of the water spray plate in the state of having the water, and the bubble mixed water in a state having the swirl direction component is discharged.

  Accordingly, an object of the present invention is to provide a shower head capable of suppressing the generation of vortex flow of bubble-containing water in the watering chamber and discharging the bubble-containing water as a relatively clean linear flow. .

In order to achieve the above object, the present invention is a shower head that discharges air mixed with air, and accelerates the water supplied from the water supply unit and the water supply unit for supplying water. A throttle channel that radiates radially around the injection center point, and an air mixing part that is provided on the downstream side of the throttle channel, and has an air introduction part that introduces air. The air introduced from the air introduction part is mixed into the jet to generate the bubble mixed water, the water spraying surface side part in which the water spray holes for discharging the bubble mixed water are formed, and the water spraying surface side part. And the back surface side portion forming the water spray chamber, and the back side portion is scattered from the back side portion on the straight line in the traveling direction of the bubble mixed water ejected from the throttle channel. It extends in the direction of the water surface side, and between itself and the water spray surface side It comprises a first wall portion forming a flow path capable of flowing along the nozzle face side you are, the first wall portion of the rear side, the center of the nozzle holes, the injection center point It is characterized by being formed outside in the radial direction .
In this invention comprised as mentioned above, the 1st wall by which the back surface part which forms a watering surface side part and a watering chamber is formed in the radial direction outer side centering on the injection center point of a watering hole By providing the portion, the flow of the bubble mixed water that flows toward the water spray hole by colliding with the first wall portion that is injected from the throttle channel in the water spray chamber and formed on the radially outer side of the water spray hole, It collides with the flow of the bubble-containing water that is jetted from the throttle channel and flows along the water spray surface along the channel between the first wall and the water spray surface, and is spaced from each other around the injection center point. The flow of the bubble-mixed water jetted radially is prevented from generating a vortex flow of the bubble-mixed water in the watering chamber, and the direction of the flow of the bubble-mixed water flowing into the spray hole is relatively adjusted. Accordingly, it is possible to suppress the bubble-mixed water discharged from the water spray holes from being scattered around and to discharge water as a relatively neatly arranged linear flow.

In this invention, Preferably, said 1st wall part of a back side part has circular arc shape.
In the present invention configured as described above, the first wall portion on the back side portion can easily capture the flow of the bubble mixed water ejected from the throttle channel on the straight line in the traveling direction, and the first wall portion The bubble-mixed water flowing toward the water spray holes by colliding with the water is jetted from the throttle flow channel and tends to flow along the water spray surface portion between the first wall portion and the water spray surface side portion. It collides with the flow of bubble-containing water and vortex flow can be efficiently suppressed.

In the present invention, preferably, the first wall portion on the back side portion is positioned so that the center of the arc shape is the same as the injection center point.
In the present invention configured as described above, the first wall portion of the back side portion is positioned at the same center as the injection center point of the arc shape of the first wall portion of the back side portion. Even when the positional relationship with the throttle channel changes due to manufacturing errors and assembly errors, the amount of flow dispersed to the left and right after the flow of bubble-containing water collides with the first wall is relatively uniform. It becomes. For this reason, it becomes easy to disperse | distribute comparatively uniformly, suppressing that a swirling component arises in a water flow. Accordingly, the flow of bubble-mixed water that collides with the first wall portion and flows toward the water spray holes is jetted from the throttle channel and flows through the flow channel between the first wall portion and the water spray surface side portion. When it collides with the flow of the bubble mixed water which is going to flow along the side part, the swirl component of the flow can be suppressed and the vortex can be efficiently suppressed.

In this invention, Preferably, said 1st wall part of a back side part is formed continuously over the perimeter.
In the present invention configured as described above, even when the positional relationship between the first wall portion on the back side and the throttle channel changes due to manufacturing errors and assembly errors, the bubbles injected from the throttle channel The flow of mixed water can be reliably collided with the first wall, and the flow of bubble mixed water flowing toward the sprinkling holes by colliding with the first wall is injected from the throttle channel and the first The flow path between the wall portion and the water spray surface side portion collides with the flow of the bubble mixed water that tends to flow along the water spray surface side portion, and the vortex flow can be efficiently suppressed.

In this invention, Preferably, the 1st wall part of a back side part is formed in the radial direction outer periphery centering on the injection center point of a watering hole.
In the present invention configured as described above, the first wall portion formed in the vicinity of the outside of the water spray hole in the radial direction centered on the injection center point is the flow of the bubble mixed water injected from the throttle channel. In the case of flowing toward the water spray hole while trying to generate a vortex so that the flow swirls by colliding with the water, the water spray surface side portion is injected from the throttle channel and between the first wall portion and the water spray surface side portion. The flow of bubble-mixed water which is about to flow along the flow line collides with the flow of bubble-mixed water flowing toward the spray hole located radially inward from the first wall portion with the spray center point as the center. By canceling the swirling component of the flow flowing into the hole, it is possible to suppress the vortex flow, and the flow direction of the bubble mixed water can be relatively adjusted. Accordingly, it is possible to suppress the bubble mixed water discharged from the sprinkling holes from being scattered around and to discharge water as a relatively clean linear flow.

In the present invention, preferably, the watering surface side portion includes a second wall portion extending from the watering surface side portion toward the back surface side portion and forming a flow path between itself and the back surface side portion. ing.
In the present invention configured as described above, the sprinkled surface side portion includes the second wall portion extending from the sprinkled surface side portion toward the back side portion, thereby allowing the bubble-mixed water ejected from the throttle channel. Can be efficiently guided toward the watering holes formed in the side of the water spraying surface by colliding with the second wall. Accordingly, it is possible to suppress the bubble mixed water discharged from the water spray holes from being insufficient, and to discharge water as a relatively clean linear flow.

In this invention, Preferably, the 2nd wall part of a water spraying surface side part is provided in the radial direction outer periphery side centering on the injection center point of the water spraying hole nearest to a throttle flow path among water spraying holes.
In the present invention configured as described above, the speed of the flow of the bubble-mixed water ejected from the throttle channel is relatively fast, and the water spray hole closest to the throttle channel where the bubble-mixed water hardly flows into the inside is provided. The bubble mixed water jetted from the throttle channel is made to collide with the second wall portion provided on the outer peripheral side of the water spray hole in the radial direction centering on the jet center point, and directed toward the water spray hole. And can be guided efficiently. Accordingly, it is possible to suppress the bubble mixed water discharged from the water spray holes from being insufficient, and to discharge water as a relatively clean linear flow.

In this invention, Preferably, the 2nd wall part of a water spraying surface side part is formed adjacent to the radial direction outer peripheral side centering on the injection center point of the watering hole nearest to a throttle flow path.
In the present invention configured as described above, the second wall is formed adjacent to the radially outer peripheral side centering on the spray center point of the water spray hole for the flow of the bubble-mixed water sprayed from the throttle channel It can be efficiently guided toward the adjacent sprinkling holes by colliding with the part, and therefore, it is possible to suppress the bubble mixed water discharged from the sprinkling holes from being insufficient, and to achieve a relatively clean linear flow. As can be discharged.

  According to the shower head of the present invention, it is possible to suppress the generation of vortex flow of bubble-containing water in the watering chamber, and to discharge water as a linear flow in which the bubble-containing water is relatively neatly arranged.

It is a perspective view which shows the external appearance of the shower head by embodiment of this invention. It is a disassembled perspective view of the shower head by embodiment of this invention. It is a top view of the shower head by the embodiment of the present invention. It is sectional drawing seen along the IV-IV line of FIG. It is a top view which shows the watering chamber formation back side member of the shower head by embodiment of this invention. It is the perspective view which looked at the sprinkling chamber front side part of the sprinkling nozzle formation member of the shower head by embodiment of this invention from the back side. It is the top view which looked at the watering nozzle formation member of the shower head by the embodiment of the present invention from the back side. It is sectional drawing seen along the VIII-VIII line of FIG. It is a partial expanded sectional view which expands and shows the area | region of A1 in sectional drawing of FIG. It is a figure which shows the result of having simulated the flow of the bubble mixing water in the watering chamber of a watering part, when the watering nozzle formation member is not provided with the 2nd wall part. It is a figure which shows the result of having simulated the flow of the bubble mixed water in the watering chamber of a watering part, when the watering nozzle formation member is provided with the 2nd wall part. It is a figure which shows roughly the result of having calculated the pressure, the flow velocity, direction, etc. of the flow which expands the area | region of A3 among the results of simulating the flow of bubble mixing water of FIG. 10, and flows into the sprinkling hole 12c. It is a figure which shows roughly the result of having calculated the pressure of the flow which flows into the sprinkling hole 12c, the flow velocity, direction, etc. among the results of simulating the flow of the bubble mixed water of FIG.

Hereinafter, a shower head according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an appearance of a shower head according to an embodiment of the present invention.

  As shown in FIG. 1, the shower head 1 of the present embodiment includes a shower head main body 2 and a water sprinkling portion 4 attached to the tip of the shower head main body 2. The shower head main body 2 includes a grip portion 2a that a user grips, and a sprinkler portion mounting portion 2b that is provided on the distal end side of the grip portion 2a and is thicker than the grip portion 2a. Moreover, the circular opening part 2c to which the watering part 4 is attached is formed in the watering part attachment part 2b. The water sprinkling part 4 is attached so that it may be fitted to the opening part 2c from the inside of the water sprinkling part attaching part 2b. A shower hose (not shown) is connected to the proximal end side of the shower head body 2. This shower head 1 includes a hand shower head of a type that can be used by a user who is used in the vicinity of water such as a wash basin, a kitchen, a bathroom, etc., and can be used by a user. It includes an overhead shower that can be used while hung on a wall such as a bathroom.

The shower head 1 is connected to a water supply faucet device (not shown) such as a hot water / water mixing faucet device via a shower hose (not shown), and water or hot water is turned off by a user's operation. Water can be discharged from the water sprinkling unit 4 by switching the water discharge state, adjusting the temperature and adjusting the flow rate.
Here, in the embodiment of the present invention, the term “water” means not only water supplied with only the water supply side of the water supply faucet device being discharged, but also a hot water supply device (not shown) connected to the water faucet device. Z)) is defined to include hot water mixed water obtained by mixing hot water supplied from water and the like. Thus, the shower head 1 is attached to a shower device (not shown) including a shower hose (not shown) and a water supply faucet device (not shown).

Next, the structure of the shower head main body 2 of the shower head 1 according to the embodiment of the present invention will be described with reference to FIGS.
2 is an exploded perspective view of the shower head according to the embodiment of the present invention, FIG. 3 is a top view of the shower head according to the embodiment of the present invention, and FIG. 4 is taken along line IV-IV in FIG. FIG.

  The shower head body 2 has a body water passage member 6 disposed therein, and the body water passage member 6 communicates with a water faucet device (not shown) via a shower hose (not shown) on the upstream side. And communicated with the sprinkler 4 on the downstream side.

  The water sprinkling part 4 is assembled from the inside to the water sprinkling part mounting part 2 b of the shower head main body 2 to form a part of the appearance of the shower head 1, and the inner porous part fitted inside the perforated cover 8. A water spray nozzle forming member 12 made of silicon provided with a cover 10, a plurality of water spray nozzles 12a, an orifice forming member 14 for accelerating the water flow and injecting it as a jet flow, and a negative pressure of the jet on the downstream side of the orifice forming member 14 The air mixing chamber forming member 16 that mixes the air sucked using the water, the water spray chamber forming back side member 20 that forms the water sprinkling chamber 18 between the water spray nozzle forming member 12, and the main body water passing member 6 are connected. The water passage connecting member 22 is provided. In the present embodiment, the water sprinkling portion 4 is formed in a substantially circular shape by combining the above-mentioned members and the like, but is formed in a quadrangular shape and is formed in a square shape in the shower head body 2 together. You may be comprised so that it may be fitted by.

The watering nozzle forming member 12 is a substantially circular plate-like member, and is provided such that a watering nozzle 12 a formed in a truncated cone shape protrudes toward the water discharge direction of the shower head body 2. The water spray nozzle forming member 12 is fitted to the inner porous cover 10 from the inner side (the back side of the shower head) on the front side (water discharge direction side) of the shower head main body 2. Further, the watering nozzle forming member 12 includes a watering chamber front side portion 12b that forms the front surface of the watering chamber and engages with the watering chamber forming rear surface side member 20 to form the watering chamber 18 therein. The orifice forming member 14 and the air mixing chamber forming member 16 are arranged from the injection center point C side. The watering nozzle forming member 12 forms a watering hole 12c that communicates from the watering chamber 18 to the front side of the shower head body 2 through the watering nozzle 12a. The water spray hole 12c is a flow channel formed in a conical shape so that the flow channel diameter gradually decreases from the water spray chamber 18 toward the water discharge direction.
Each of the water spray nozzles 12 a formed on the water spray nozzle forming member 12 is disposed so as to be aligned with the plurality of holes 8 a formed in the porous cover 8 and the plurality of nozzle through holes 10 a formed in the inner porous cover 10. When the watering nozzle forming member 12, the inner porous cover 10, and the porous cover 8 are arranged so as to overlap each other, each watering nozzle 12a penetrates each nozzle through hole 10a of the inner porous cover 10 and each hole 8a of the porous cover 8 It is comprised so that it may protrude from.
Thus, each watering nozzle 12a is formed so that the front end 12d of the watering nozzle 12a protrudes to the forefront in a state where the shower head body 2 is assembled. Furthermore, the watering nozzle 12a (and the watering hole 12c formed in each watering nozzle 12a) is seen from the center of the watering nozzle forming member 12 when the watering nozzle forming member 12 is viewed from the user side (that is, the front surface side). The first circumferential row 11 arranged on the innermost circumference from the center of the watering nozzle forming member 12 is arranged in a row at equal intervals on the concentric circumference, more specifically, On the second circumferential row l2 arranged on the outer circumference of the first circumferential row and the third circumferential row l3 arranged on the outermost circumference, they are arranged in rows at equal intervals, respectively. . In the present embodiment, the watering nozzles 12a (and the watering holes 12c formed in each watering nozzle 12a) have three rows of circles on the first circumferential row l1, the second circumferential row l2, and the third circumferential row l3. Although arranged on the circumference, in other embodiments, the watering nozzles 12a are arranged on four circumferences on the first circumferential row, the second circumferential row, the third circumferential row, and the fourth circumferential row. In still another embodiment, the watering nozzles 12a (and the watering holes 12c formed in each watering nozzle 12a) are, for example, linearly in the vertical and horizontal directions and from the center of the watering nozzle forming member 12. It may be arranged by a method other than being arranged on the circumference from the center of the watering nozzle forming member 12, such as when arranged vertically and horizontally symmetrically. Here, in FIGS. 3, 7, 8, and 9, in order to explain the positions of the first circumferential row 11, the second circumferential row 12, and the third circumferential row 13, a representative of the watering nozzles 12 a on the first circumferential row. Several representative points are illustrated by l1, some representative points of some of the nozzles 12a in the second circumferential row are illustrated by l2, and some representative points of the spray nozzles 12a in the third circumferential row are l3. This is illustrated in

  In the state where the water sprinkling part 4 is attached to the shower head main body 2, the water spray nozzle forming member 12, the porous cover 8 and the inner porous cover 10 are arranged so as to overlap each other, so that the space between the porous cover 8 and the water spray nozzle 12 a is obtained. The nozzle gap portion 24 is formed so that air outside the shower head 1 can be sucked into the porous cover 8 from the nozzle gap portion 24. Further, the inner porous cover 10 includes a part of these nozzle through holes 10a from the vicinity of the center thereof to the nozzle through holes 10a formed on the innermost circumference of the nozzle through holes 10a of the inner porous cover 10. An annular recess 10b is formed so as to form a continuous space (mainly see FIG. 2), and an intake passage 10c penetrating to the back surface of the inner porous cover 10 is formed near the center of the recess 10b. Accordingly, the external air sucked from the nozzle gap 24 passes through the recess 10b and the intake passage 10c as in the air flow indicated by the arrow a1, and passes through the intake passage 10c to the air introduction portion 16a of the air mixing chamber forming member 16. So that it can be mixed into the water stream.

  The orifice forming member 14 is a constricted portion that accelerates the water supplied from the feed water faucet device radially toward the downstream air mixing chamber forming member 16 in 12 directions around the injection center point C and injects it as a jet. 14a is formed. This injection center point C indicates a virtual center point of the water flow radially ejected from the orifice forming member 14, and the radial center point of the orifice forming member 14, the radial center point of the air mixing chamber forming member 16, and A center point substantially matching the radial center point of the watering nozzle forming member 12 is shown. Since the flow path diameter is gradually reduced toward the downstream side and the flow path opened at the downstream end is formed in the throttle part 14a, the water flow is accelerated inside the throttle part as the flow path diameter is reduced. 14a is jetted out.

The air mixing chamber forming member 16 is formed in an annular shape, is connected to each throttle portion 14a corresponding to each of the orifice forming members 14 to form a straight flow path, and is spaced from each other around the injection center point C. A radially extending throttle channel portion 16b, an air mixing chamber portion 16c that forms a channel extending linearly in the same radial direction from the throttle channel portion 16b, and air in the air mixing chamber portion 16c. And the air introduced from the air introduction part 16a is sucked and mixed into the jet using the negative pressure of the accelerated jet flowing into the air mixing chamber 16c. The bubble-mixed water is generated in a radial direction from the discharge openings 16d that are radially opened in 12 directions in the radially outer direction of the air mixing chamber forming member 16 into the sprinkling chamber. To do It is.
The throttle channel portion 16 b forms a throttle channel with the throttle portion 14 a of the orifice forming member 14. The throttle channel portion 16b forms a channel extending radially in 12 directions around the injection center point C and spaced apart from each other in a radial direction centered on the injection center point C. Accordingly, the throttle portions 14a and the corresponding throttle passage portions 16b are connected in series, and flow in 12 directions radially along the back surface of the water spray nozzle forming member 12 with the injection center point C as the center, and arranged independently of each other. It is formed as a road.

  The water sprinkling chamber forming back member 20 has a substantially cylindrical water sprinkling chamber in which the water sprinkling chamber rear surface portion 20 a that forms the back surface of the sprinkling chamber 18 is engaged with the water sprinkling chamber front side portion 12 b of the sprinkling nozzle forming member 12. 18 is formed. The water sprinkling chamber 18 is provided with an air mixing chamber forming member 16 on the inner peripheral side thereof, the outer peripheral side and the rear side thereof by the sprinkling chamber rear side portion 20a, and the front side (the water discharge direction side) thereof at the front side of the water sprinkling chamber. It is formed by the side part 12b. Therefore, in this embodiment, the water sprinkling chamber 18 forms a water flow space on the downstream side of the air mixing chamber forming member 16. Therefore, in this water sprinkling chamber 18, the bubble-mixed water sprayed radially in the 12 directions from the spout opening 16 d of the air mixing chamber forming member 16 enters the sprinkling holes 12 c of the sprinkling nozzle 12 a of the sprinkling nozzle forming member 12. An outflowing stream is formed. The outer peripheral side wall portion 20b of the sprinkler chamber forming back side member 20 that forms the outer peripheral wall portion of the sprinkler chamber 18 has a wave shape in which curvilinear irregularities are continuous over the entire circumference.

The water passage connecting member 22 is connected to the main body water passing member 6 on the upstream side thereof, and connected to the orifice forming member 14 on the downstream side thereof, and supplies the water flow from the main body water passing member 6 to the orifice forming member 14. It is like that.
In addition, in this embodiment, the shower head main body 2 and the water sprinkling part 4 of the shower head 1 may be further provided with the mechanism of the water channel switching apparatus which can switch a some water discharge mode as a modification.

The structure of the watering nozzle forming member and the watering chamber forming back side member of the present embodiment will be described in detail below with reference to FIGS.
FIG. 5 is a top view illustrating a water spray chamber forming back side member of a shower head according to an embodiment of the present invention, and FIG. 6 illustrates a water spray chamber front side portion of a water spray nozzle forming member of a shower head according to an embodiment of the present invention. 7 is a perspective view seen from the back side, FIG. 7 is a plan view of the water spray nozzle forming member of the shower head according to the embodiment of the present invention seen from the back side, and FIG. 8 is taken along the line VIII-VIII in FIG. FIG. 9 is a partially enlarged cross-sectional view showing an area A1 in the cross-sectional view of FIG. 8 in an enlarged manner.

First, the water sprinkling chamber forming back side member 20 includes a first wall portion 20 c protruding from the sprinkling chamber forming back side member 20.
The first wall portion 20c is located between the water spray hole 12c in the second circumferential row l2 and the water spray hole 12c in the third circumferential row l3 and in the vicinity of the outer peripheral side of the shower head body 2 of the water spray hole 12c in the second circumferential row l2. (If it is assumed that the first wall portion 20c is extended to the water spray chamber front side portion 12b, the first wall portion 20c is adjacent to the outer side in the radial direction from the injection center point C of the water spray hole 12c in the second circumferential row l2. In such a position), and extends continuously over the entire circumference around the injection center point C. Such a first wall portion 20c is arranged on a straight line in the traveling direction of the water ejected from the throttle channel portion 16b, and covers the front in the traveling direction of the water linearly ejected from the throttle channel portion 16b. In addition to a continuous arc wall extending over the entire circumference, a plurality of arc-shaped walls are separately formed.
The first wall portion 20c extends linearly from the sprinkling chamber back side portion 20a toward the sprinkling chamber front side portion 12b. The first wall portion top end portion 20d of the first wall portion 20c has a sprinkler chamber back side portion 20a and a first wall portion with respect to the distance between the sprinkler chamber back side portion 20a and the sprinkler chamber front side portion 12b. The distance from the top end portion 20d of the first wall portion 20c is positioned so as to protrude to the vicinity of the front side portion 12b of the watering chamber so that the ratio is, for example, 4: 3. Therefore, the first wall portion top end portion 20d of the first wall portion 20c protrudes from the water sprinkling chamber back side portion 20a toward the vicinity of the sprinkling chamber front side portion 12b so as not to contact the water sprinkling chamber front side portion 12b. The spray center point C is formed along the sprinkling chamber front side portion 12b between the first wall portion top end portion 20d of the first wall portion 20c and the sprinkling chamber front side portion 12b. The flow path 18a is formed in which the bubble-mixed water can flow radially outward. In the first wall portion 20c, the center point of the entire circumference of the first wall portion 20c or the center point of an arc formed in an arc shape is positioned at the injection center point C.

In addition, in this embodiment, although the 1st wall part 20c is formed integrally with the sprinkling chamber formation back side member 20, the 1st wall part 20c is formed as another member, and the sprinkling chamber formation back side member 20 is formed. It may be arranged by attaching to the back.
In the present embodiment, the first wall portion 20c is arranged in the vicinity of the radially outer side from the injection center point C of the water spray hole 12c in the second circumferential row l2, but the water spray hole in the second circumferential row l2. Between 12c and the water sprinkling hole 12c of the 3rd circumferential row l3, you may arrange | position at a fixed distance spaced apart radially outward from the watering hole 12c of the 2nd circumferential row l2.
Further, in the present embodiment, the first wall portion 20c is disposed between the watering holes 12c of the second circumferential row l2 and the watering holes 12c of the third circumferential row l3, but in other embodiments, In the case where the watering nozzles are arranged on four circumferences on the first, second, third, and fourth circumferential rows, the third circumferential watering holes and the first circumferential rows are arranged. You may arrange | position similarly between the water spray holes of a 4 round row.

Next, the watering nozzle forming member 12 includes a second wall portion 12 e that protrudes from the watering chamber front side portion 12 b of the watering nozzle forming member 12.
The second wall portion 12e is adjacent to the water spray hole 12c so as to cover an area portion of the outer periphery of the water spray hole 12c in the first circumferential row l1 about half of the outer periphery in the radial direction when viewed from the injection center point C. Has been placed. The 2nd wall part 12e is arrange | positioned corresponding to each of each watering hole 12c arrange | positioned on the 1st circumferential row l1.
The second wall portion 12e extends linearly from the sprinkling chamber front side portion 12b toward the sprinkling chamber back side portion 20a so as not to reach the sprinkling chamber back side portion 20a. Therefore, the second wall portion top end portion 12f on the back side of the second wall portion 12e protrudes from the sprinkling chamber front side portion 12b toward the sprinkling chamber back side portion 20a so as not to contact the sprinkling chamber back side portion 20a. The flow of bubble-containing water flowing on each water sprinkling hole 12c of the first circumferential row 11 having a relatively strong momentum of the flow injected from the throttle portion 14a and the throttle channel portion 16b Can be efficiently guided to the water spray hole 12c immediately before the second wall portion 12e. Furthermore, the flow path 18a which can flow along the sprinkling chamber back side part 20a is formed between the second wall part top end part 12f of the second wall part 12e and the sprinkling chamber back side part 20a.
The second wall portion 12e is formed integrally and continuously extending over the entire circumference around the injection center point C so as to be adjacent to the outer periphery side of the shower head body 2 of the water spray holes 12c of the first circumferential row l1. May be.
In the present embodiment, the second wall portion 12e is formed integrally with the watering nozzle forming member 12, but the second wall portion 12e is formed as a separate member and attached to the watering nozzle forming member 12 later. May be arranged.
Furthermore, when the second wall portion 12e is formed in an arc shape, the second wall portion 12e is forward of the flow direction of the bubble-containing water that is linearly ejected from the throttle portion 14a and the throttle channel portion 16b. It may be displaced from the position on the extended line in the left-right direction.

Next, the operation (action) of the shower head according to the embodiment of the present invention will be described.
First, the water discharge operation of the shower head according to the embodiment of the present invention will be described with reference to FIGS.

First, in a state before the user uses the shower head 1, the water faucet device (not shown) is in a water-stopped state.
Next, when the user operates the water supply faucet device and switches the water discharge state to the water discharge state, water or hot water (hereinafter referred to as “water”) is subjected to temperature adjustment and flow rate adjustment, Water can be supplied to the watering part 4.
When the user operates the water faucet device to discharge water, the water supplied from the water faucet device passes through the main body water passing member 6 of the shower head main body 2 via a shower hose (not shown), and the water spraying portion. 4 into the orifice forming member 14.
The water that has reached the orifice forming member 14 of the water sprinkling part 4 flows toward the front side (water discharge direction side) of the shower head main body 2 and reaches the throttle part 14 a disposed on the front side of the orifice forming member 14. Since the water passing through the throttle portion 14a is reduced by the flow passage diameter being reduced by the throttle portion 14a, the flow rate of the water is accelerated and ejected so as to be jetted from the throttle portion 14a. Since the throttle portion 14a is opened separately in 12 directions around the injection center point C, the water flow injected from the throttle portion 14a is an independent water flow toward the 12 directions centered on the injection center point C. Be injected. The water flow ejected from the throttle portions 14a passes through the corresponding throttle passage portions 16b individually connected to the respective throttle portions 14a, and passes through the air mixing chamber portion 16c. The air introduced from is sucked and mixed into the water stream. Therefore, the accelerated water flow becomes a water flow in a state of bubble mixed water in which air bubbles are mixed in the air mixing chamber portion 16c, and the bubble mixed water maintains the accelerated water flow while maintaining the accelerated water flow. It is ejected from the ejection opening 16d of the forming member 16 as an independent water flow in 12 directions around the ejection center point C.

As shown in FIG. 9, the flow of bubble-mixed water ejected from the ejection opening 16 d of the air mixing chamber forming member 16 is a flow in a direction that spreads radially along the water spray chamber front side portion 12 b of the water spray nozzle forming member 12. Is formed in the watering chamber 18.
A part of the bubble-mixed water flow ejected from the air mixing chamber forming member 16 collides with the second wall portion 12e and is adjacent to the ejection center point C side of the second wall portion 12e, as indicated by an arrow a2. The water flows so as to be efficiently guided toward the inside of the water sprinkling holes 12c arranged therethrough, passes through the water sprinkling holes 12c of the watering nozzle 12a, and is discharged as a clean and linear flow from the front surface of the shower head body 2. The
In this way, a part of the bubble-mixed water flow collides with the second wall portion 12e and flows into the water spray hole 12c, so that the majority of the bubble-mixed water flow is over the water spray hole 12c closest to the injection center point C. It is possible to prevent the amount of water discharged from these sprinkling holes 12c from passing through and the flow in the sprinkling holes 12c from being disturbed, and a constant flow rate from the second wall portion 12e to these sprinkling holes 12c. It is possible to discharge water as a linear flow that is neatly arranged from the forefront of the shower head body 2 by supplying the bubble-containing water.

  Of the bubble-mixed water flow ejected from the air mixing chamber forming member 16, the flow of the portion other than the flow into the sprinkling holes 12c mainly forms a flow in the direction of spreading radially, more specifically, the bubble-mixed water flow. Does not collide with the second wall 12e, that is, the flow path 18b between the second wall top end 12f and the sprinkling chamber back side 20a, and / or the circumference around the injection center point C. A flow that flows radially toward the outer peripheral side of the sprinkling chamber 18 through the flow path between the plurality of second wall portions 12e arranged side by side is formed.

As shown in FIG. 9, when a part of the bubble-mixed water flow reaches the first wall portion 20c, as shown by an arrow a3, a part of the bubble-mixed water flow collides with the first wall portion 20c, It flows toward the water spray holes 12c formed in the vicinity of the inner side in the radial direction around the injection center point C with respect to the first wall portion 20c.
On the other hand, the other part of the bubble mixed water flow passes through the flow path 18a between the first wall top end 20d of the first wall 20c and the water spray chamber front side 12b as shown by an arrow a4. Thus, a flow in a direction spreading radially further along the water spray chamber front side portion 12b is formed.
Therefore, a flow toward the sprinkling hole 12c (a flow as shown by an arrow a3) while trying to generate a vortex so that a part of the bubble mixed water flow collides with the first wall portion 20c and the water flow swirls. And the flow (flow as shown by the arrow a4) in which the other part of the bubble-mixed water flow spreads further radially along the water spray chamber front side portion 12b through the flow path 18a is the water spray chamber 18. It intersects in the inflow region A2 to the inner watering hole 12c. As described above, the two flows described above pass while intersecting each other in the inflow region A2, thereby suppressing the vortex flow of the flow flowing into the sprinkling hole 12c and comparing the flow direction of the bubble mixed water with the water discharge direction. Are arranged. Therefore, the bubble-mixed water flowing in the water discharge direction in the water spray nozzle 12a has the swirl direction component of the flow suppressed and the flow disturbance is suppressed, and the bubble-mixed water discharged from the water spray holes 12c of the water spray section 4 is suppressed. The water is discharged as a linear flow that is relatively neat and restrained from splashing around.

  The flow as indicated by the arrow a4 described above flows so as to further spread radially along the water spray chamber front side portion 12b through the flow path 18a. At this time, the flow of the bubble-containing water is a flow in which the swirl direction component is suppressed and the vortex is suppressed, reaches the outer peripheral side wall portion 20b of the water spray chamber forming back side member 20, and the water spray of the water spray nozzle forming member 12 The water flows into the water sprinkling holes 12c on the third circumferential row l3 arranged on the outermost circumference of the room front side part 12b, and the vortex flow of the bubble mixed water is suppressed from each sprinkling hole 12c and is relatively neatly arranged. Water is discharged as a linear flow.

  As described above, the bubble-containing water stream flows while colliding with the first wall portion 20c and the second wall portion 12e in the water sprinkling chamber 18, so that it is on the innermost circumference of the water sprinkling chamber front side portion 12b. Water discharged from the water sprinkling holes 12c on the first circumferential row l1, and water spouted from the water sprinkling holes 12c on the second circumferential row l2 disposed on the circumference of the middle portion of the water sprinkling chamber front side portion 12b, The water spouts from the sprinkling holes 12c on the third circumferential row l3 arranged on the outermost circumference of the water sprinkling chamber front side part 12b all have substantially the same water pressure, flow velocity, and direction. The water discharged from the entire 12c is discharged as a linear flow that is relatively clean.

Next, using FIG. 10 to FIG. 13, the case where the sprinkling chamber forming back side member does not include the first wall portion and the first wall portion in the sprinkling chamber of the sprinkling portion of the shower head according to the embodiment of the present invention. The difference in the flow of the bubble-containing water from the case where it is provided will be described in more detail using simulation results.
FIG. 10 is a diagram showing a result of simulating the flow of bubble-containing water in the watering chamber of the watering portion when the watering chamber forming back surface side member does not include the first wall portion, and FIG. FIG. 12 is a diagram showing a result of simulating the flow of bubble-containing water in the watering chamber of the watering portion when the forming back side member includes the first wall portion, and FIG. 12 is a flow of the bubble-containing water of FIG. 13 is a diagram schematically showing the results of calculating the pressure, flow velocity, direction, and the like of the flow flowing into the sprinkling hole 12c by enlarging the region A3, and FIG. 13 is a diagram showing the mixing of bubbles in FIG. It is a figure which shows roughly the result of having calculated the pressure, the flow velocity, direction, etc. of the flow which expands the area | region of A4 among the results of having simulated the flow of water, and flows in into the sprinkling hole 12c.
Hereinafter, in description of FIG.10 and FIG.12, structures other than the sprinkling chamber formation back side member in the shower head in which the sprinkling chamber formation back side member in FIG.10 and FIG.12 is not equipped with the 1st wall part are implementation mentioned above. Since it is the same as the form, in the description, parts other than the watering chamber forming back side member and the watering chamber will be described with reference numerals of the present embodiment.
Furthermore, FIG.10 and FIG.11 shows the watering chamber formed between the watering nozzle formation member 12 arrange | positioned in this side in FIG. 10, and the watering chamber formation back side member arrange | positioned in the back | inner side. In order to show the inside clearly, the position of the watering hole 12c of the watering nozzle forming member 12 arranged on the front side is shown in a simplified manner, and the watering chamber and the air mixing chamber are formed in order to show the flow of the bubble mixed water in an easy-to-understand manner. The structure of the member 16 and the orifice forming member 14 is schematically shown.
Further, in FIGS. 10 and 11, a portion having a relatively high water pressure and a relatively fast flow rate is shown in dark black, and a portion having a relatively low water pressure and a relatively slow flow rate is shown in light black, mainly It is shown that the flow of bubble-containing water is generated along the dark black part. In FIG.12 and FIG.13, the direction of flow of bubble mixed water, the magnitude | size of speed, etc. are shown by the direction and magnitude | size of each arrow in a figure.

First, according to FIG. 10 and FIG. 12, in the shower head having the same structure as the shower head main body and the water spraying portion of the present embodiment except that the water spray chamber forming back side member does not include the first wall portion. The flow of bubble-containing water in the room is simulated, and the results of calculating the pressure, flow velocity, flow direction, etc. will be described.
Specifically, the flow of bubble-mixed water that is accelerated and injected from the throttle portion 14a of the orifice forming member 14 and the throttle passage portion 16b of the air mixing chamber forming member 16 is radially spaced from each other in the watering chamber. Being jetted. For example, as shown by an arrow a5, the flow of bubble-mixed water ejected from a throttle 14a or the like advances linearly while maintaining an accelerated momentum and collides with the outer peripheral side wall of the sprinkling chamber forming rear side member. Then, the direction is changed to the left and right, and the flow is mixed with the flow of the bubble-containing water (flow indicated by arrows a6 and a7, respectively) ejected from the adjacent throttle portion 14a etc. This creates a swirling flow.
Accordingly, the flow of the bubble-mixed water forms a spiral flow having a swirling component in the vicinity of the water spray hole 12c (reference numeral is indicated by 12c (l2)) on the second circumferential row l2. As a result, the flow of bubble-containing water flowing into the water spray holes 12c on the circumferential row 12 becomes a spiral flow having a swirling component, the direction of the flow is disturbed, and the water mixed with bubbles is scattered when discharged from the water spray holes 12c. It shows the result that water discharge is not made as a well-organized linear flow.
Further, the flow of the bubble-mixed water forms a spiral flow having a swirling component even in the vicinity of the water spray hole 12c (indicated by reference numeral 12c (l3)) on the third circumferential row l3. As a result of the flow of bubble-containing water flowing into the water sprinkling holes 12c on the circumferential row 13 into a spiral flow having a swirl component, the direction of the flow is disturbed, and when the water is discharged from the water sprinkling holes 12c, the bubble-containing water scatters around. It shows the result that water discharge is not made as a well-organized linear flow.

Here, the manner in which the flow of the bubble-mixed water flowing into the water sprinkling holes 12c on the third circumferential row 13 becomes a spiral flow having a swirling component will be described with reference to FIG.
FIG. 12 shows the result of simulating the flow of bubble-mixed water in FIG. 10 by enlarging the flow in the area A3 in the vicinity of the sprinkling holes 12c on the two third circumferential rows l3, and the pressure, flow velocity and flow direction. The result of having calculated etc. is shown roughly. In FIG. 12, the shape of the flow path area | region formed in the watering nozzle formation member 12 and the watering hole 12c is shown by the imaginary line.
Here, the flow of the bubble-containing water flowing into the sprinkling holes 12c on the third circumferential row 13 becomes a spiral flow having a swirl component (for example, the flow shown by the arrow a8), the flow direction is disturbed, and the sprinkling holes As a result, the bubble-containing water scatters to the surroundings when being discharged from the nozzle 12c (for example, as shown by the arrow a9, the flow of the bubble-containing water extends from the spray hole 12c, or the flow direction and speed are relatively uneven. In other words, the result shows that the water is not discharged as a linear flow that is neatly arranged from the sprinkling hole 12c.

On the other hand, in FIG.11 and FIG.13, in the shower head 1 with which the sprinkling chamber formation back side member 20 of this embodiment is equipped with the 1st wall part 20c, the flow of the bubble mixed water in the sprinkling chamber 18 is simulated. The results will be described.
In FIG. 11, in the shower head 1 in which the sprinkling chamber forming back side member 20 of the present embodiment includes the first wall portion 20c, the flow of the bubble-containing water in the sprinkling chamber 18 is simulated, and the pressure, flow rate, and The result of calculating the flow direction and the like is shown.
Specifically, the flow of bubble-mixed water that is accelerated and injected from the throttle portion 14a of the orifice forming member 14 and the throttle passage portion 16b of the air mixing chamber forming member 16 is spaced from each other in the water spray chamber 18. It is ejected radially. For example, the flow of bubble-containing water ejected from a certain throttle portion 14a or the like proceeds linearly while maintaining accelerated momentum, and a part of the flow of bubble-containing water is, for example, as shown by an arrow a3, When it collides with the first wall portion 20c, it flows toward the sprinkling holes 12c on the second circumferential row 12 formed near the inner side in the radial direction centering on the injection center point C with respect to the first wall portion 20c.
On the other hand, the other part of the flow of the bubble-containing water that does not collide with the first wall part 20c is, for example, as shown by an arrow a4, with the first wall part top end part 20d of the first wall part 20c. An attempt is made to form a flow in a direction that further spreads outward along the sprinkler chamber front side portion 12b through the flow path 18a between the sprinkler chamber front side portion 12b.
Therefore, a part of the flow of the bubble-mixed water collides with the first wall portion 20c and the flow a3 toward the spray hole 12c, and the other part of the flow of the bubble-mixed water passes through the flow path 18a. The flow a4 in a direction that spreads further outward along the water spray chamber front side portion 12b intersects in the vicinity of the inflow region A2 into the water spray hole 12c on the second circumferential row l2, and the flow of bubble-mixed water is in the left-right direction. It is possible to suppress the generation of a vortex so as to swivel, and the flow of bubble-containing water ejected from the adjacent throttle portion 14a etc. of the above-mentioned certain throttle portion 14a (for example, flows indicated by arrows a10 and a11, respectively) ) And the generation of a swirl of bubble-mixed water can be suppressed.
Therefore, when the flow of bubble-containing water flows into the sprinkling holes 12c (indicated by reference numeral 12c (l2)) on the second circumferential row l2, the flow velocity and direction of the flow of bubble-containing water are relatively set. It is possible to discharge water as a relatively neatly arranged linear flow by suppressing the bubble-mixed water flowing in the state and discharged from the water sprinkling holes 12c on the second circumferential row l2 from being scattered.
Furthermore, as shown in FIG. 11, on the outside of the first wall portion 20c, as described above, in the vicinity of the inflow region A2 to the water sprinkling hole 12c on the second circumferential row l2, the bubble mixed water is already present. Part of the flow collides with the first wall portion 20c and the flow a3 toward the water sprinkling hole 12c, and the other part of the flow of the bubble mixed water passes through the flow path 18a and the front side portion 12b of the water sprinkling chamber. Since the flow a4 in a direction extending further outward along the line intersects and the component to be swirled in the flow of the bubble-containing water flows so as to cancel out, the bubbles are also mixed outside the first wall portion 20c. As a result, the component of the water flow that is going to swirl is suppressed, and the generation of the swirl of the bubble mixed water is suppressed.
Therefore, even in the vicinity of the water spray hole 12c (indicated by reference numeral 12c (l3)) on the third circumferential row l3, the flow direction, water pressure, speed, and the like in which the swirl component is suppressed are relatively high. A uniform flow is formed, and the flow of bubble-containing water flowing into the sprinkling holes 12c on the third circumferential row l3 becomes a flow that is relatively uniformly directed toward the water discharge direction, and the flow direction and the speed variation are compared. This shows a result that the bubble mixed water discharged from the water sprinkling holes 12c can be prevented from being scattered and the water can be discharged as a relatively clean linear flow.

Here, the manner in which the flow of the bubble-mixed water flowing into the sprinkling holes 12c on the third circumferential row l3 is discharged as a clean and linear flow will be described with reference to FIG.
FIG. 13 shows the result of simulating the flow of bubble-mixed water in FIG. 11, expanding the flow in the area A4 in the vicinity of the water sprinkling holes 12c on the two third circumferential rows l3 to increase the pressure, flow velocity, and flow direction. The result of having calculated etc. is shown roughly. In FIG. 13, the shape of the flow path area | region formed in the watering nozzle formation member 12 and the watering hole 12c is shown by the imaginary line.
Here, the flow of the bubble-mixed water flowing into the water sprinkling holes 12c on the two third circumferential rows l3 is a linear flow (for example, directed to the water discharge direction in which the swirl component is suppressed in either sprinkling hole 12c. The flow velocity and direction of the flow is relatively uniform, and when discharged from the water spraying hole 12c, the flow of the bubble mixed water is, for example, as shown by the arrow a13. The flow rate and direction are relatively uniform in the opening direction of 12c. Accordingly, the bubble-mixed water discharged from the sprinkling holes 12c scatters from the sprinkling holes 12c (from the direction in which the sprinkling holes 12c open, that is, from the extension of the intended water discharge direction) to the surroundings and flows from the sprinkling holes 12c in the surrounding unintended direction. It can be seen that the water is discharged as a relatively neatly arranged linear flow so that the user receives an aesthetic sense in the direction in which the sprinkling hole 12c opens. In other words, the bubble-mixed water discharged from each sprinkling hole 12c is discharged from each sprinkling hole 12c as a straight line with a straight line in the forward water discharge direction directed by each sprinkling hole 12c.

Next, the effect of the shower head 1 by embodiment of this invention mentioned above is demonstrated.
According to the shower head 1 by embodiment of this invention mentioned above, the watering chamber formation back side member 20 which forms the watering nozzle formation member 12 and the watering chamber 18 is provided with the 1st wall part 20c, Therefore In the watering chamber 18 , The flow of bubble-mixed water that is jetted from the throttle part 14a and the throttle channel part 16b and flows toward the sprinkling holes 12c by colliding with the first wall part 20c is jetted from the throttle part 14a and the throttle channel part 16b. In addition, it collides with the flow of the bubble-mixed water that tends to flow along the water spray chamber front side 12b of the water spray nozzle forming member 12 through the flow path 18a between the first wall 20c and the water spray side, and the injection center point. The flow of bubble-mixed water jetted radially around C is prevented from generating swirl of bubble-mixed water in the sprinkling chamber 18, and the flow of bubble-mixed water flowing into the spray hole 12c is suppressed. Kiga comparison to be trimmed. Accordingly, it is possible to suppress the bubble-mixed water discharged from the water sprinkling holes 12c from being scattered around and to discharge water as a relatively clean and linear flow.

  According to the shower head 1 by embodiment of this invention mentioned above, the 1st wall part 20c of the sprinkling chamber formation back surface side member 20 flows the flow of the bubble mixed water injected from the throttle part 14a and the throttle channel part 16b. It becomes easy to catch on the straight line in the traveling direction, and the flow of the bubble mixed water that collides with the first wall portion 20c and flows toward the water spray hole 12c is ejected from the throttle portion 14a and the throttle channel portion 16b, and the first The flow path 18a between the wall portion 20c and the water spray chamber front side portion 12b of the water spray nozzle forming member 12 collides with the flow of the bubble-containing water trying to flow along the water spray chamber front side portion 12b, and the vortex flow is efficiently prevented. Can be suppressed.

  According to the shower head 1 according to the above-described embodiment of the present invention, the center of the arc shape of the first wall portion 20c of the sprinkling chamber forming back side member 20 is positioned at the same position as the injection center point C. Even when the positional relationship between the first wall portion 20c of the sprinkling chamber forming back side member 20, the throttle portion 14a and the throttle flow passage portion 16b changes due to manufacturing errors and assembly errors, the flow of bubble-mixed water remains. After colliding with the first wall portion 20c, the amount of flow dispersed to the left and right becomes relatively uniform. For this reason, it becomes easy to disperse | distribute comparatively uniformly, suppressing that a swirling component arises in a water flow. Accordingly, the flow of bubble-containing water that collides with the first wall portion 20c and flows toward the sprinkling hole 12c is ejected from the throttle portion 14a and the throttle flow passage portion 16b, and the first wall portion 20c and the water spray nozzle forming member. When the flow path 18a between the 12 water sprinkling chamber front side portions 12b collides with the flow of bubble-containing water that is going to flow along the water sprinkling chamber front side portion 12b, the swirl component of the flow is suppressed and the vortex flow is made efficient. Can be suppressed.

  According to the shower head 1 by embodiment of this invention mentioned above, the positional relationship of the 1st wall part 20c of the sprinkling chamber formation back side member 20, and the throttle part 14a and the throttle channel part 16b is a manufacturing error and assembly. Even in the case where it varies depending on the error, the flow of the bubble-mixed water ejected from the restricting portion 14a and the restricting flow passage portion 16b can be reliably collided with the first wall portion 20c, and collide with the first wall portion 20c. The flow of bubble-mixed water flowing toward the water spray hole 12c is ejected from the throttle part 14a and the throttle channel part 16b and between the first wall part 20c and the water spray chamber front side part 12b of the water spray nozzle forming member 12. It is possible to efficiently suppress the vortex flow by colliding with the flow of the bubble-mixed water trying to flow through the flow path 18a along the water spray chamber front side portion 12b.

  According to the shower head 1 according to the embodiment of the present invention described above, the flow of the bubble mixed water ejected from the throttle portion 14a and the throttle channel portion 16b is radially outward with the spray center point C of the water spray hole 12c as the center. In the case of flowing toward the sprinkling hole 12c while trying to generate a vortex so that the flow swirls by colliding with the first wall portion 20c formed in the vicinity, it is injected from the throttle portion 14a and the throttle channel portion 16b, and The flow of bubble-mixed water that tends to flow along the water flow chamber front side portion 12b through the flow path 18a between the first wall portion 20c and the water sprinkling chamber front side portion 12b is injected from the first wall portion 20c. Suppresses swirl components by colliding with the flow of bubble-mixed water flowing toward the water spray hole 12c located radially inward from the center point C and canceling the swirl component of the flow flowing into the water spray hole 12c. Shi Flow direction of the bubbly water is trimmed relatively. Accordingly, it is possible to suppress the bubble-mixed water discharged from the sprinkling holes 12c from being scattered around and to discharge water as a relatively clean and linear flow.

  According to the shower head 1 according to the embodiment of the present invention described above, the watering nozzle forming member 12 extends from the watering chamber front side portion 12b of the watering nozzle forming member 12 toward the watering chamber forming rear side member 20. By providing the wall portion 12e, the water spray hole 12c formed in the water spray nozzle forming member 12 by causing the flow of the bubble mixed water jetted from the throttle portion 14a and the throttle channel portion 16b to collide with the second wall portion 12e. Can be efficiently guided toward the. Therefore, it is possible to suppress the bubble mixed water discharged from the sprinkling holes 12c from being insufficient, and to discharge water as a relatively clean linear flow.

  According to the shower head 1 according to the embodiment of the present invention described above, the flow speed of the bubble mixed water ejected from the throttle portion 14a and the throttle flow passage portion 16b is relatively high, and the flow of the bubble mixed water flows into the inside. In the water sprinkling hole 12c closest to the constricted throttle part 14a and the throttling flow path part 16b, the flow of the bubble mixed water jetted from the throttling part 14a and the throttling flow path part 16b is centered on the injection center point C of the sprinkling hole 12c. It can be efficiently guided toward the water sprinkling hole 12c by colliding with the second wall portion 12e provided on the outer peripheral side in the radial direction. Therefore, if the bubble mixed water discharged from the sprinkling hole 12c is insufficient. The water can be discharged as a linear flow that is relatively neatly arranged.

  According to the shower head 1 according to the above-described embodiment of the present invention, the flow of bubble-mixed water sprayed from the throttle portion 14a and the throttle flow passage portion 16b is radially outward with the spray center point C of the water spray hole 12c as the center. Can be efficiently guided toward the adjacent water sprinkling hole 12c by colliding with the second wall portion 12e formed adjacent thereto, and therefore, when the bubble mixed water discharged from the sprinkling hole 12c is insufficient. The water can be discharged as a linear flow that is relatively neatly arranged.

DESCRIPTION OF SYMBOLS 1 Shower head 2 Shower head main body 6 Main body water-passing member 12 Sprinkling nozzle formation member 12b Sprinkling chamber front side part 12c Sprinkling hole 12e Second wall part 14 Orifice formation member 14a Restriction part 16 Air mixing chamber formation member 16b Restriction flow path part 18a Flow path 18 Sprinkling chamber 20 Sprinkling chamber forming rear side member 20a Sprinkling chamber rear side portion 20d First wall portion top end portion 20c First wall portion l1 First circumferential row l2 Second circumferential row l3 Third circumferential row C Injection center point

Claims (8)

A shower head that discharges air mixed with air bubbles,
A water supply unit for supplying water;
A throttle channel that accelerates the water supplied from the water supply unit and injects it radially around the injection center point, and
An air mixing part provided on the downstream side of the throttle channel, the air mixing part having an air introduction part for introducing air, and mixing the air introduced from the air introduction part into the jetted flow The aeration part that produces
A watering surface side portion in which watering holes for discharging the bubble-mixed water are formed, and a rear surface side portion that is arranged opposite to the watering surface side portion and that forms the watering chamber and the watering surface side portion,
The back side portion extends from the back side portion toward the water sprinkling surface side portion on the straight line in the traveling direction of the bubble-mixed water ejected from the throttle channel, and itself and the water sprinkling surface side portion. A first wall portion that forms a flow path that can flow along the watering surface side portion between ,
The shower wall according to claim 1, wherein the first wall portion of the back side portion is formed on a radially outer side of the water spray hole with the spray center point as a center .   The shower head according to claim 1, wherein the first wall portion of the back side portion has an arc shape.   The shower head according to claim 2, wherein the first wall portion of the back side portion has an arc-shaped center positioned at the same position as the injection center point.   The shower head according to any one of claims 1 to 3, wherein the first wall portion of the back side portion is formed continuously over the entire circumference.   The shower according to any one of claims 1 to 4, wherein the first wall portion of the back side portion is formed in the vicinity of a radially outer side of the water spray hole with the injection center point as a center. head.   The sprinkling surface side portion includes a second wall portion that extends from the sprinkling surface side portion toward the back side portion and that forms a flow path between itself and the back side portion. Item 6. The shower head according to any one of Items 1 to 5.   The second wall portion of the water sprinkling surface side portion is provided on a radially outer peripheral side centering on the injection center point of a water sprinkling hole that is closest to the throttle channel among the water sprinkling holes. Shower head described in.   The said 2nd wall part of the said water spray surface side part is formed adjacent to the radial direction outer peripheral side centering on the said injection center point of the water spray hole nearest to the said throttle flow path. Shower head.

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