JP2014128450A - Shower bath - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower bath that prevents water, flowing toward a spray part side from a throttle part once, from flowing back to the side of an air introduction port, even when a distance from the throttle part to the spray part is set short.SOLUTION: In a shower bath F2, a side wall 35ba, which is a guide surface serving as water flow widening means for widening a water jet flow in a width direction along a water spray surface, is provided in a connection flow path 35 between an aeration part 33 and a water spray part 34. The side wall 35ba is configured by making water passage resistance on both end sides in the width direction of the connection flow path 35 lower than water passage resistance on a central side in the width direction of the connection flow path 35.

Description

  The present invention relates to a shower apparatus.

  There is known a shower device that mixes air into water using the so-called ejector effect and discharges it as water mixed with bubbles. 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 apparatus, a shower apparatus 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. To distribute. The distribution mode of the bubble-mixed water in this shower device is arranged by arranging a turbulent flow generation expansion part in the traveling direction of the bubble-mixed water, causing the bubble-mixed water to collide with the turbulent flow generation expansion part, and changing the direction. Is distributed over the entire front surface of the housing shell.

  Further, as another example of such a shower device, a shower device 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. The distribution mode of the bubble mixed water in this shower device is a sprinkling hole while the bubble mixed water hits the screw member in the partition pipe provided on the downstream side of the decompression chamber and the shower head inner wall further downstream to change the direction. It is going to.

  By the way, both the shower apparatus described in the following Patent Document 1 and the shower apparatus described in the following Patent Document 2 have similar non-uniform bubble growth, and water droplets having a non-uniform particle size are applied to the user. Because it is considered to be a thing, a shower water discharge with a comfortable feeling with a feeling of volume like taking a large amount of rain has not been realized. Therefore, in Patent Document 3 below, by supplying bubble mixed water with the bubble diameter kept as uniform as possible to the sprinkling holes, water droplets granulated to a relatively large and uniform particle size are continuously landed on the user. In addition, a shower device has been proposed in which a user enjoys a shower with a feeling of a large amount that feels like a large amount of rain.

  Specifically, a water supply unit for supplying water, and a throttle unit that is provided downstream of the water supply unit, reduces the flow passage cross-sectional area than the water supply unit, and injects the passing water downstream. An air mixing part provided on the downstream side of the throttle part, in which air is mixed into the water jetted through the throttle part to form bubble mixed water, and on the downstream side of the air mixing part A watering surface provided with a plurality of watering holes for discharging bubble-mixed water is formed along a water spraying direction of water sprayed from the throttle part. . Furthermore, a water flow widening means is provided in the connection flow path between the air mixing portion and the water spray portion to widen the jet water flow sprayed from the throttle portion in the width direction along the water spray surface. The water flow widening means has a cross-sectional area perpendicular to the injection direction of water jetted from the throttle portion in the connection flow path between the air mixing portion and the water spray portion, along the surface where the water spray holes are formed in the water spray portion. In such a direction, it is configured to become wider from the throttle portion side toward the water spray portion side. By configuring the water flow widening means in this way, it is possible to keep water from flowing back from the water sprinkling unit side to the air mixing unit side by the widened jet water flow, and it becomes impossible to suck air from the air introduction port This is an excellent shower device that solves this problem.

JP-T-2006-509629 Japanese Patent No. 3747323 JP 2011-173084 A

  However, such a water flow widening means needs to secure a certain distance from the throttle part to the water sprinkling part, and when further reducing the distance from the throttle part to the water sprinkling part to downsize the entire shower apparatus. Further ingenuity was required. Specifically, if the distance from the throttle part to the water spray part is simply shortened, the jet water flow becomes insufficiently widened, and the water once directed toward the water spray part flows backward to the air inlet side and the air is sucked in. A new problem arises that it becomes impossible.

  The present invention has been made in view of such problems, and the purpose thereof is that even when the distance from the throttle portion to the water sprinkling portion is shortened, water once directed from the throttling portion toward the water sprinkling portion is air. An object of the present invention is to provide a shower device that does not flow backward to the inlet side.

  In order to solve the above-described problems, a shower apparatus according to the present invention is a shower apparatus that discharges bubble-containing water, and includes (1) a water supply unit for supplying water and (2) a downstream side of the water supply unit. A throttle unit that injects water supplied from the water supply unit toward the downstream side from the injection hole and generates an accelerated jet water flow; and (3) air that is provided downstream of the throttle unit and sucks air An air mixing part that has an inlet and mixes air sucked from the air inlet into the jet water flow to generate bubble mixed water, and (4) is provided downstream of the air mixing part and discharges the bubble mixed water The watering part which has a watering surface in which the some watering hole for doing is formed along the injection direction of a jet water flow is provided. Further, in the shower device according to the present invention, the water flow widening means for widening the jet water flow in the width direction along the water spray surface is provided in the connection flow path between the air mixing part and the water spray part. The water flow widening means is configured by making the water flow resistance at both ends in the width direction of the connection flow path smaller than the water flow resistance at the center side in the width direction of the connection flow path.

  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.

  In addition, since the water spray surface in which a plurality of water spray holes for discharging the water containing bubbles is arranged is formed along the jet direction of the jet water flow, the water spray holes are formed with the substantially uniform bubble diameter. Can be reached. 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, by providing the water flow widening means, even when the distance from the throttle portion to the water spray portion is short, the narrow jet water flow is initially sufficiently widened from the injection hole, and the water spray portion Can be supplied to. Specifically, the water flow widening means of the present invention utilizes the property that water tends to flow through a path having a smaller water flow resistance than a path having a larger water flow resistance, and the center side in the width direction of the connection flow path. It is comprised by making the water flow resistance of the both ends side in the width direction of a connection flow path smaller than this water flow resistance. By configuring in this way, it is possible to increase the propensity of the jet water flow jetted to the center side in the width direction of the connection flow path to spread to both ends, and when the distance from the throttle part to the water spray part is short Even if it exists, a jet water flow can be fully widened. By sufficiently widening the jet water flow, it is possible to keep the water from flowing backward from the water sprinkling portion side to the air mixing portion side, and it is possible to prevent air from being unable to be sucked from the air introduction port.

  Further, in the shower device according to the present invention, the water flow widening means has a guide surface provided at a position that interferes with the virtual injection region in which the injection hole is projected toward the injection direction of the injection water flow, It is also preferable that the jet water flow flowing along the guide surface is guided from the center side toward the both end sides in the width direction.

  In this preferable aspect, since the guide surface is provided at a position where it interferes with the virtual injection region, the jet water flow injected from the injection hole can be made to follow the guide surface. Since the jet water flow that flows along the guide surface is guided from the center side toward both ends by the guide surface, the expanded jet water flow becomes a continuous water flow from one end side to the other end side in the width direction without breaking, Backflow to the air inlet side can be suppressed.

  In the shower device according to the present invention, it is also preferable that the guide surface is arranged so that a part of the virtual ejection region does not interfere with the guide surface.

  In this preferable aspect, since it arrange | positions so that a part of virtual injection area | region may not interfere with a guide surface, a part of virtual injection area | region which does not interfere can be arrange | positioned in the width direction center side. By disposing a part of the virtual injection region that does not interfere with the guide surface on the center side in the width direction, the water flow injected to the center side in the width direction of the spray water flow directly reaches the water sprinkling part. Therefore, it is possible to prevent all the jet water flow from being guided to both ends in the width direction by the widening action by the guide surface, and the widened jet water flow is continuous from one end side to the other end side in the width direction without cracking. It becomes a water flow, and the backflow to the air inlet side can be suppressed.

  Further, in the shower device according to the present invention, the guide surface is formed so that the central side in the width direction has an upward gradient toward the downstream side, while the downward gradient from the central side in the width direction toward both ends. It is also preferable.

  In this preferred embodiment, the water flow resistance is reliably increased by making the center side in the width direction of the guide surface ascending, and the direction is made by making the slope down from the center side in the width direction of the guide surface toward both ends. The water flow resistance to the can be reduced reliably. Therefore, the propensity of the jet water flow jetted to the center side in the width direction of the connection flow channel to spread to both ends can be more reliably strengthened, even when the distance from the throttle portion to the water spray portion is short. The jet water flow can be sufficiently widened.

  In the shower device according to the present invention, it is also preferable that the guide surface is formed by a smooth gradient change so that the jet water flow in contact with the guide surface maintains a state of a series of water flows.

  When the uphill and downhill slopes are combined on the guide surface, there will be a part where the uphill slopes are connected to each other and a part where the uphill slope changes to the downhill slope, and the speed vector of the jet water flow tends to suddenly change at that part. It is in. Since such a rapid change in the velocity vector leads to cracking of the jet water flow, in this preferred embodiment, by forming the guide surface with a smooth gradient change, the change in the velocity vector of the jet water flow in contact with the guide surface is moderated. As a result, it is possible to avoid a situation in which the jet water flow in contact with the guide surface is broken.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where the distance from a throttle part to a water sprinkling part is shortened, the shower apparatus from which the water which once went to the water sprinkling part side from a throttle part does not flow backward to the air inlet side can be provided. .

It is a perspective view which shows the shower apparatus which concerns on embodiment of this invention. (A) is a top view which shows the watering surface side of the shower apparatus shown in FIG. 1, (B) is a side view which shows the water inlet side of the shower apparatus shown in FIG. It is the cross-sectional perspective view seen from the AA cross section side in (A) of FIG. It is a figure which shows the BB cross section of FIG. It is a figure which shows CC cross section of FIG. It is a figure which shows the DD cross section of FIG. It is a figure which shows the EE cross section of FIG. It is a figure which shows the FF cross section of FIG. It is a figure which expands and shows the G section of FIG.

  Subsequently, a shower apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a shower apparatus F2 according to an embodiment of the present invention. FIG. 2 (A) is a plan view showing the watering surface side of the shower device F2, and FIG. 2 (B) is a side view showing the water supply port side of the shower device F2. As shown in FIGS. 1 and 2, the shower apparatus F2 is mainly constituted by a main body 3 having a cylindrical shape, and an opening 331 (air introduction port) is formed in the upper surface 3a of the shower apparatus F2 (main body 3). Has been. A plurality of water spray holes 343 are formed on the lower surface 3b (sprinkling surface) facing the upper surface 3a of the shower device F2.

  Subsequently, the shower device F2 will be described with reference to FIG. 3 which is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 3, 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 shower device F <b> 2 further includes a connection flow path 35 between the aeration unit 33 and the water spray 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 the side wall 31b and the side wall 31c as a part of the main body 3 so that the advancing direction of water may be followed. In the case of this embodiment, since the inner wall of the water supply part 31 has comprised the cylindrical shape, the side wall 31b and the side wall 31c have shown a part of inner wall which has a cylindrical shape. A side wall 31a is formed so as to face the water supply port 31d and connect to the side wall 31b and the side wall 31c.

  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 portion 32 is provided with an injection hole 321 that is a single throttle channel. The injection hole 321 is a through hole provided so as to connect the side wall 31 a of the water supply unit 31 and the side wall 33 a of the aeration unit 33.

  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 a side wall 33b and a side wall 33c as a part of the main body 3 along the traveling direction of water. In the case of this embodiment, since the inner wall of the aeration part 33 has a cylindrical shape, the side wall 33b and the side wall 33c show a part of the inner wall having a cylindrical shape. Further, a side wall 33a is formed so as to be connected to the side wall 33b and the side wall 33c on the upstream side.

  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 sprinkling part 34 has the side wall 34b and the side wall 34c as a part of the main body 3 so that the advancing direction of water may be followed. In the case of this embodiment, since the inner wall of the water sprinkling part 34 has a cylindrical shape, the side wall 34b and the side wall 34c show a part of the inner wall having a cylindrical shape. The water spray hole 343 is formed in the side wall 34c. Moreover, the side wall 34a is formed so that it may connect with the side wall 34b and the side wall 34c in the downstream.

  The connection flow path 35 is provided between the air mixing part 33 and the watering part 34 so as to connect the air mixing part 33 and the watering part 34. The connection flow path 35 has side walls 35ba and 35bb and side walls 35ca and 35cb as a part of the main body 3 along the water traveling direction. In the case of this embodiment, since the inner wall of the connection flow path 35 has a cylindrical shape, the side walls 35ba and 35bb and the side walls 35ca and 35cb show a part of the inner wall having a cylindrical shape.

  The downstream part of the connection flow path 35 formed by the side wall 35bb and the side wall 35cb is a part formed so as to widen the flow path outward. This state will be described with reference to FIGS. 8 is a diagram showing a cross section taken along line FF in FIG. 3, and FIG. 9 is a diagram showing an enlarged G region in FIG.

  As shown in FIGS. 8 and 9, the downstream portion of the connection flow path 35 formed by the side wall 35bb and the side wall 35cb is formed so as to widen the flow path outward. In this embodiment, in order to shorten the length of the connection flow path 35 and to make the main body 3 more compact, the water spray surface (the water spray hole 343 is formed) of the water spray sprayed from the spray hole 321. A side wall 35ba (guide surface) is provided as a water flow widening means that widens in the width direction along the surface.

  The side wall 35ba as a guide surface is configured to make the water flow resistance at both ends in the width direction of the connection flow path 35 smaller than the water flow resistance at the center side in the width direction of the connection flow path 35. As shown in FIG. 9, the side wall 35ba is formed so that the m direction has an upward slope and the n direction has a downward slope. Accordingly, the side wall 35ba is formed so that the central side in the width direction has an upward slope toward the downstream side, while the downward slope from the central side in the width direction toward both ends.

  The form of the side wall 35ba as the guide surface will be further described with reference to FIGS. FIG. 4 is a view showing a BB cross section in FIG. 3. FIG. 5 is a cross-sectional view taken along the line CC in FIG. FIG. 6 is a diagram showing a DD cross section in FIG. 3. FIG. 7 is a diagram showing an EE cross section in FIG. 3.

  As shown in FIG. 4, the shape of the side wall 35ba and the relative positional relationship between the side wall 35ba and the injection hole 321 are determined so that the side wall 35ba and the injection hole 321 interfere on the most downstream side. Accordingly, the virtual injection region where the injection holes 321 are projected in the injection direction of the injection water flow and the side wall 35ba interfere with each other. The degree of interference between the side wall 35ba and the injection hole 321 (virtual injection region) is the largest at the position shown in FIG. 4, but even in that case, a part of the injection hole 321 (virtual injection region) is part of the side wall 35ba. It is configured not to interfere.

  As shown in FIG. 5, the degree of interference between the side wall 35ba and the injection hole 321 (virtual injection region) is slightly lower than the position shown in FIG. ing. As shown in FIG. 6, the side wall 35ba and the injection hole 321 (virtual injection region) do not interfere with each other slightly upstream from the position shown in FIG. Further, as shown in FIG. 7, on the further upstream side, the side wall 35ba is a flat surface, and the side wall 35ba and the injection hole 321 (virtual injection region) do not interfere with each other.

  As described with reference to FIGS. 4 to 7, the gradient change of the side wall 35ba that is the guide surface is smooth, and the spray water flow that contacts the side wall 35ba that is the guide surface maintains a state of a series of water flows. It is configured so that it will not crack or be disturbed.

  Next, the flow of water inside the shower device F2 will be described. 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 the injection holes 321 formed in the throttle unit 32. The water injected from the injection hole 321 to the downstream air mixing section 33, the connection flow path 35 and the water sprinkling section 34 is sprayed so as not to interfere with the side walls 33b and 33c of the air mixing section 33. As described above, a part of the jet water flow interferes with the side wall 35ba that is the guide surface of the connection flow path 35, and the flow is guided to both ends in the width direction.

  Thus, when water is jetted from the throttle part 32 and widened by the action of the side wall 35ba of the connection flow path 35, and the widened jet water flow is supplied to the water spray part 34, the water spray part 34, the connection flow path 35 and Water temporarily accumulates in at least a part of the air mixing part 33, and a gas-liquid interface that is an interface between the accumulated water and air is formed. And the injected water rushes into the water accumulated from the gas-liquid interface, and the air present in the air mixing part 33 is entrained to generate bubble mixed water. The bubble-mixed water is divided into each water flow and discharged to the outside from each water spray hole 343. Since an opening 331 is formed in the aeration unit 33, even if the jetted water enters the water accumulated from the gas-liquid interface and the air existing in the aeration unit 33 is entrained, the air is always supplied. Can be maintained.

  As described above, the shower device F <b> 2 according to the present embodiment is a shower device that discharges bubble-containing water, and includes (1) a water supply unit 31 for supplying water and (2) a downstream side of the water supply unit 31. A throttle unit 32 for injecting water supplied from the water supply unit 31 toward the downstream side from the injection hole 321 and generating an accelerated jet water flow; and (3) provided on the downstream side of the throttle unit 32, An air mixing part 33 that has an opening 331 that is an air inlet for sucking air and that mixes air sucked from the opening 331 into the jet water flow to generate bubble mixed water; and (4) downstream of the air mixing part 33 The watering part 34 which has the lower surface 3b which is the water spraying surface provided in the side and in which the several watering hole 343 for discharging bubble mixing water is formed along the injection direction of a jet water flow is provided. Furthermore, in the shower apparatus F2 according to the present embodiment, the water flow widening means for widening the jet flow in the width direction along the lower surface 3b that is the water spray surface in the connection flow path 35 between the air mixing portion 33 and the water spray portion 34. As a side wall 35ba is provided. The side wall 35ba, which is a guide surface as the water flow widening means, is configured to make the water flow resistance at both ends in the width direction of the connection flow path smaller than the water flow resistance on the center side in the width direction of the connection flow path 35. Has been.

  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 from the plurality of water spray holes 343 of the water sprinkling unit 34 to the outside. 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 with the water and becomes bubble mixed water, and is sprayed from the plurality of water spray holes 343 of the water spray part 34.

  In addition, since the water spray surface in which a plurality of water spray holes 343 for discharging the water containing bubbles is arranged is formed along the jet direction of the jet water flow, the water containing air bubbles remains in its substantially uniform bubble diameter. The position where 343 is formed can be reached. When the bubble-mixed water containing bubbles having a substantially uniform bubble diameter is supplied to the sprinkling holes 343 in this way, a bubble flow or slag flow can be formed in the sprinkling holes and immediately after being discharged from the sprinkling 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.

  Moreover, in this embodiment, by providing the side wall 35ba which is a guide surface as a water flow widening means, even when the distance from the throttle part 32 to the water sprinkling part 34 is short, the width at the time of being initially injected from the injection hole 321 is a width. A narrow jet water flow can be sufficiently widened and supplied to the sprinkler 34. Specifically, using the property that water tends to flow through a path having a low water flow resistance than a path having a high water flow resistance, the water flow resistance on the central side in the width direction of the connection flow path 35 It is comprised so that the water flow resistance of the both ends side in the width direction of a connection flow path may be made small. By configuring in this way, it is possible to increase the propensity of the jet water flow jetted to the center side in the width direction of the connection flow path 35 to flow to both ends, and the distance from the throttle portion 32 to the water spray portion 34 is increased. Even if it is short, the jet water flow can be sufficiently widened. By sufficiently widening the jet water flow, it is possible to keep the water from flowing backward from the water sprinkling portion side to the air mixing portion side, and it is possible to prevent air from being unable to be sucked from the air introduction port.

  In the present embodiment, the water flow widening means has a side wall 35ba that is a guide surface provided at a position that interferes with the virtual injection region in which the injection holes 321 are projected in the injection direction of the injection water flow. A certain side wall 35ba is configured to guide a jet water flow flowing along the side wall 35ba from the center side in the width direction toward both end sides.

  Thus, since the side wall 35ba which is a guide surface is provided in the position which interferes with a virtual injection area | region, the jet water flow injected from the injection hole 321 can be made to follow the side wall 35ba which is a guide surface. Since the jet water flow that flows along the side wall 35ba that is the guide surface is guided from the center side toward both ends by the side wall 35ba that is the guide surface, the widened jet water flow does not break from the one end side in the width direction. It becomes a continuous water flow toward the end side, and backflow to the opening 331 side which is an air inlet can be suppressed.

  Further, in the present embodiment, the side wall 35ba that is the guide surface is arranged so that a part of the virtual injection region does not interfere with the side wall 35ba that is the guide surface.

  Thus, since a part of the virtual injection region is arranged so as not to interfere with the side wall 35ba which is the guide surface, a part of the virtual injection region which does not interfere can be arranged on the center side in the width direction. By disposing a part of the virtual jet region that does not interfere with the side wall 35ba, which is the guide surface, on the center side in the width direction, the water flow injected to the center side in the width direction of the jet water flow directly reaches the water sprinkling part. Accordingly, it is possible to prevent all the jet water flow from being guided to the both ends in the width direction by the widening action by the side wall 35ba which is the guide surface, and the widened jet water flow can be prevented from being broken from one end side to the other end in the width direction. It becomes a continuous water flow toward the side, and it is possible to suppress a back flow toward the opening 331 that is an air inlet.

  In the present embodiment, the side wall 35ba, which is the guide surface, is formed so that the central side in the width direction has an upward slope toward the downstream side, and the downward slope from the central side in the width direction toward both ends. ing.

  In this way, the water flow resistance is reliably increased by making the width direction central side of the side wall 35ba, which is the guide surface, ascending, and the side wall 35ba, which is the guide surface, is lowered toward the both ends from the width direction central side. By making the gradient, the water flow resistance in that direction can be reliably reduced. Therefore, the propensity of the jet water flow jetted to the center side in the width direction of the connection flow path 35 to spread to both ends can be more reliably strengthened, and the distance from the throttle portion 32 to the water spray portion 34 is short. Even if it exists, a jet water flow can be fully widened.

  Moreover, in this embodiment, the side wall 35ba which is a guide surface is formed by the smooth gradient change so that the jet water flow which touched the said side wall 35ba may maintain the state which becomes a series of water flows.

  When the ascending slope and the descending slope are combined and formed on the side wall 35ba which is the guide surface, a part where the ascending slopes are connected to each other and a part where the ascending slope changes from the ascending slope to the descending slope are generated. Tend to occur. Since such a rapid change in the velocity vector leads to cracking of the jet water flow, in this embodiment, by forming the side wall 35ba which is the guide surface by a smooth gradient change, the velocity vector of the jet water flow in contact with the side wall 35ba is changed. By making the change gentle, it is possible to avoid a situation in which the jet water flow in contact with the side wall 35ba is broken.

  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.

3: Main body 3a: Upper surface 3b: Lower surface 31: Water supply part 31a: Side wall 31b: Side wall 31c: Side wall 31d: Water supply port 32: Throttle part 33: Air mixing part 33a: Side wall 33b: Side wall 33c: Side wall 34: Sprinkling part 34a: Side wall 34b: Side wall 34c: Side wall 35: Connection flow path 35ba, 35bb: Side wall 35ca, 35cb: Side wall 321: Injection hole 331: Opening 343: Sprinkling hole F2: Shower device

Claims (5)

A shower device that discharges water containing bubbles,
A water supply unit for supplying water;
A throttle unit that is provided on the downstream side of the water supply unit, injects water supplied from the water supply unit toward the downstream side from the injection hole, and generates an accelerated jet water flow;
An air mixing part that is provided on the downstream side of the throttle part and has an air introduction port for sucking air;
A watering part provided on the downstream side of the air mixing part, and having a watering surface in which a plurality of watering holes for discharging the bubble mixed water are formed along the injection direction of the jet water flow,
The connection flow path between the aeration unit and the water sprinkling part is provided with water flow widening means for widening the jet water flow in the width direction along the water sprinkling surface,
The water flow widening means is configured by making the water flow resistance at both ends in the width direction of the connection flow path smaller than the water flow resistance on the center side in the width direction of the connection flow path. Shower device characterized. The water flow widening means has a guide surface provided at a position that interferes with a virtual jet region in which the jet holes are projected toward the jet direction of the jet water flow,
The shower device according to claim 1, wherein the guide surface is configured to guide the jet water flow flowing along the guide surface from a center side to both end sides in the width direction. .   The shower apparatus according to claim 2, wherein the guide surface is arranged so that a part of the virtual jet region does not interfere with the guide surface.   The guide surface is formed so that a central side in the width direction has an upward slope toward the downstream side, while a downward slope is formed from the central side in the width direction toward both ends. The shower device according to claim 3.   The shower apparatus according to claim 4, wherein the guide surface is formed by a smooth gradient change so as to maintain a state where the jet water flow in contact with the guide surface forms a series of water flows.

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