JP2019103660A - Water discharge device for bathtub - Google Patents

Abstract

To provide a water discharge device for a bathtub which can provide improved feeling to enjoy shower to a user since water discharge shape of water flow discharged toward the vicinity of shoulders of the user is hardly curved and is made linear when a spout part is formed to be curved so that a central part of an opening part of the spout part is positioned behind right and left end parts.SOLUTION: A water discharge device 1 disclosed in the invention discharges water flow which is wide in a horizontal direction toward shoulders of a user sitting in a bath tub and includes: a reserving chamber 36; a spout part 4 formed to be curved so that a central part in the horizontal direction is positioned behind right and left end parts; and a narrowing flow passage 38 which forms a flow passage narrower than the reserving chamber and extends to the spout part. The narrowing flow passage 38 is equipped with flow rate adjusting means which can make a reduction in flow rate of water passing through a central part 38c smaller than a reduction in flow rate of water passing through right and left end parts 38d.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a bathtub spouting device, and more particularly to a bathtub spouting device which is installed in a bathtub and discharges a wide water flow in the lateral direction toward the shoulder of a user sitting in the bathtub.

  BACKGROUND ART As described in, for example, Patent Document 1, there is known a water discharge device for shoulder water which is installed on a rim portion of a bath and which can discharge water onto a bather's shoulder. In the device main body of this water discharger, after the water entering from the inflow port is first spread in the lateral direction in the storage chamber having a relatively large channel cross-sectional area, the spread water is squeezed to a relatively small channel cross-sectional area By flowing into the flow path, water is vigorously discharged from the discharge port. In such a water discharger, the discharge port is formed to extend linearly in the left-right direction, and wide-width water discharge is performed in the left-right direction.

JP, 2016-7361, A

  There is a demand for arranging such a spout water discharge device for a bath where the rim portion is curved. However, when a water discharger whose discharge port extends linearly in the left-right direction is arranged in a bath where the rim portion is curved, the discharge port does not match the shape of the rim portion and protrudes inward from the rim portion It is unpreferable also as a design and user-friendliness. Therefore, the inventor of the present invention considered curving the discharge port so that the central portion of the discharge port is positioned rearward of the left and right end portions in accordance with the curvature of the rim portion.

  However, as shown in FIG. 13, when the discharge port is curved and formed, there is a problem that the shape of the water discharge from the discharge port is curved. That is, while the user's shoulder extends substantially linearly in the left and right direction around the head, the curved spouting water falls in a U-shaped curved area around the user's neck, against the shoulder It will hit to cross the back and forth. Therefore, it is not possible for the user to land linearly in the lateral direction on the shoulder of the user, and the ratio of the amount of landing water to the amount of discharged water is also reduced, causing a problem that the user does not feel comfortable.

  Therefore, according to the present invention, even if the spout portion is formed to be curved so that the central portion of the opening portion of the spout portion is positioned rearward of the left and right end portions, spouting is performed near the user's shoulder It is an object of the present invention to provide a water spouting device for a bath, which is less likely to be curved and linear in the spouting shape of a water stream, and which can improve the bathing comfort of the user.

In order to achieve the above object, the present invention is a bathtub spouting device installed in a bathtub and spouting a wide water flow in the lateral direction toward the shoulder of a user sitting in the bathtub, The storage chamber temporarily stores water that has flowed in from the supply pipe and the inside thereof extends in the left-right direction, and is formed in a wide shape extending in the left-right direction, and the center part in the left-right direction is more than the left and right end parts The throttling flow path includes a water discharge port portion curved to be positioned rearward, and a throttling flow path forming a flow path narrowed from the storage chamber and extending to the water discharge port portion. The present invention is characterized in that it has a flow velocity adjusting means which makes the decrease in the flow velocity of water passing through the central portion smaller than the decrease in the flow velocity of water passing through the left and right end portions.
In the present invention configured as described above, the throttling channel has a flow velocity that causes the reduction in the flow velocity of water passing through the central portion of the throttling channel to be smaller than the reduction in the flow velocity of water passing through the left and right end portions. Since the adjustment means is provided, it is possible to make the flow velocity of water spouted from the central portion of the spout portion greater than the flow velocity of water spouted from the left and right end portions of the spout portion. Therefore, water discharged from the central portion of the spout portion can be discharged to a position ahead of the water discharged from the left and right end portions. Therefore, according to the present invention, even if the spout portion is formed to be curved so that the central portion of the opening portion of the spout portion is positioned rearward of the left and right end portions, The spouting shape of the spouted water stream is less likely to be curved and linear, and the user's bathing feeling can be improved.
Further, according to the present invention, the water having flowed into the storage chamber is spread in the lateral direction in the storage chamber, and then passes through the throttling flow path provided with the flow velocity adjusting means. As a result, a broad water flow in the left-right direction is easily formed, and the water discharge shape of the water flow is unlikely to be curved and can be made linear, and the user's bathing comfort can be improved.

In the present invention, preferably, the flow velocity adjusting means of the throttle channel is formed by making the length in the front-rear direction of the central portion of the throttle channel shorter than the length in the front-rear direction of the left and right end portions.
In the present invention thus configured, the flow velocity adjusting means of the throttle channel is formed by making the length in the front-rear direction of the central portion of the throttle channel shorter than the length in the front-rear direction of the left and right end portions. . Thereby, the pressure loss of water passing through the central portion of the throttle channel can be made smaller than the pressure loss of water passing through the left and right end portions. Therefore, the flow velocity of water discharged from the central portion of the spout portion can be made larger than the flow velocity of water discharged from the left and right end portions of the spout portion. Therefore, according to the present invention, even if the spout portion is curved and formed such that the central portion of the opening portion of the spout portion is located rearward of the left and right end portions, use is made with a relatively simple configuration. It is possible to make it difficult for the water discharge shape of the water stream to be discharged toward the shoulder of the person to be curved.

In the present invention, preferably, the spout portion is formed by making the height from the central portion to the left and right end portions constant.
In the present invention thus configured, the spout portion is formed by making the height of the flow path from the central portion to the left and right end portions constant. Thus, the pressure loss of water passing through the central portion of the spout can be made smaller than the pressure loss of water passing through the left and right end portions. Therefore, according to the present invention, by setting the height of the spout portion to a constant height from the central portion to the left and right end portions, the film thickness of the water discharged in the form of a wide film is disturbed and discharged. The flow velocity of water spouted from the central portion of the spout is larger than the flow velocity of water spouted from the left and right end portions of the spout, while suppressing that the membranous water is divided to the left and right can do.

In the present invention, preferably, the bathtub water discharging apparatus further includes a sloped portion rising from the storage chamber to the throttle channel at a bottom surface between the reservoir and the throttle channel, A connection portion between the throttle channel and the inclined portion is formed to extend in parallel with a virtual line connecting the left and right end portions of the water discharge port.
In the present invention configured as described above, the inclined portion suppresses the acceleration of water toward the throttling channel and the generation of turbulent flow. Furthermore, a connecting portion between the inclined portion and the throttle channel is formed to extend in parallel with a virtual line connecting the left and right end portions of the water discharge port. Therefore, even in the case where the throttling channel is provided with a flow velocity adjusting means that makes the decrease in the flow velocity of water passing through the central portion smaller than the decrease in the flow velocity of water passing through the left and right end portions, the inclined portion The water flowing into the throttling channel can flow so as to spread relatively uniformly with respect to the imaginary line. Therefore, according to the present invention, it is possible to suppress that the water flowing from the inclined portion to the throttling channel is drawn to the flow of the central portion where the decrease in the flow velocity of the water is small to cause the contraction flow. Thereby, it can be suppressed that the shape of the spouting of the water stream spouted toward the vicinity of the shoulder of the user is disturbed.

In the present invention, preferably, the bathtub water discharging apparatus further includes a sloped portion rising from the storage chamber to the throttle channel at a bottom surface between the reservoir and the throttle channel, A connection portion between the storage chamber and the inclined portion is formed to extend in parallel with a virtual line connecting the left and right end portions of the water discharge port.
In the present invention configured as described above, the inclined portion suppresses the acceleration of water toward the throttle channel and the generation of turbulent flow. Furthermore, a connection portion between the storage chamber and the inclined portion is formed to extend in parallel with an imaginary line connecting the left and right ends of the water discharge port. Therefore, even if the throttling flow path is formed with a flow velocity adjusting means that makes the decrease in the flow velocity of water passing through the central portion smaller than the decrease in the flow velocity of water passing through the left and right end portions. The water flowing from the to the inclined portion can flow so as to spread relatively uniformly with respect to a virtual line connecting the left and right ends of the spout. Therefore, according to the present invention, the water flowing into the throttling channel from the inclined portion flows so as to spread relatively uniformly, and is drawn to the flow in the central portion where the decrease in the flow velocity of water is small, thereby causing contraction. Can be suppressed. Thereby, it can be suppressed that the shape of the spouting of the water stream spouted toward the vicinity of the shoulder of the user is disturbed.

  According to the bathtub spout water discharge device of the present invention, even if the spout portion is curved and formed such that the central portion of the opening portion of the spout portion is located rearward of the left and right end portions, The water spouting shape of the water flow spouted toward can be curved and linear, and the user's bathing comfort can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view which shows the bathtub apparatus with which the water discharging apparatus for bathtubs by 1st Embodiment of this invention is applied. It is a top view of FIG. It is a schematic sectional drawing seen along the III-III line of FIG. It is a side view of FIG. It is the elements on larger scale sectional drawing which expands the water discharging apparatus for bathtubs by 1st Embodiment of this invention shown in FIG. 3, and shows the state which reversed the right and left of the paper surface. It is sectional drawing seen along the VI-VI line of FIG. It is sectional drawing seen along the VII-VII line of FIG. It is sectional drawing seen along the VIII-VIII line of FIG. It is the front view which looked at the water discharging apparatus for bathtubs by 1st Embodiment of this invention from the front. It is a figure which shows a mode that the water which flowed in into the storage chamber of the water discharging apparatus for bathtubs by 1st Embodiment of this invention water-discharges from a water discharge port part through an inclination part and a throttling flow path. It is a perspective view which shows a mode that the water spouting from a water spout part is performed with respect to the user sitting in the bathtub provided with the water discharging apparatus for bathtubs by 1st Embodiment of this invention. It is the front view which looked at the water discharging apparatus for bathtubs by 2nd Embodiment of this invention from the front. As a comparative example, while schematically showing the internal flow path of the bathtub water discharger provided with a throttling flow path having a uniform length in the left-right direction, the water flowing into the storage chamber is discharged from the water discharge port It is a figure which shows a mode that the water discharge shape is curving at the time of.

Next, a bathtub apparatus to which a bathtub water discharging apparatus according to a first embodiment of the present invention is applied will be described with reference to the accompanying drawings.
1 is a schematic perspective view showing a bathtub apparatus to which a bathtub water discharging apparatus according to a first embodiment of the present invention is applied, FIG. 2 is a top view of FIG. 1, and FIG. 3 is a III-III line of FIG. And FIG. 4 is a side view of FIG.

  As shown in FIG. 1 and FIG. 2, a bathtub apparatus 3 to which a bathtub water discharging apparatus 1 according to an embodiment of the present invention is applied includes a bathtub 2. The bathtub water discharger 1 is installed in the bathtub 2. The bathtub 2 stores water (including hot water). In the present embodiment, the side on which the spout 4 to be described later of the bathtub spouting device 1 is provided is the front, the side on which the storage chamber 36 on the opposite side is provided is the back, and the spout 4 is the front The right side is the right direction, and the left side is the left direction.

The bathtub 2 is connected to the bottom 2a, the vertical wall 2b on the short side contacting the back of the user H, the side wall 2d on the long side of the bathtub 2, the upper portion of the vertical wall 2b, and forms the upper surface of the bathtub 2 And an upper end 2c. The upper end 2c is set as a height relatively close to the upper body of the user H sitting in the bathtub, for example, the head, neck or shoulder. A first intake port 6 and a second intake port 22 are formed in the side wall 2d.
The bathtub 2 is a so-called round type bathtub in which the upper part of the wall surface of the bathtub 2 is formed in an arc shape in the horizontal direction. The bathtub 2 is a so-called cradle type bathtub in which the upper part of the wall surface of the bathtub 2 is formed in an arc shape in the horizontal direction, a circular bathtub, or a wide type bathtub in which the vertical wall 2b forms a long side It is also good.

  As shown in FIG. 3, the bathtub water spouting device 1 spouts water supplied from the supply pipe into the bathtub 2. The bathtub water discharger 1 is disposed at the inner edge portion of the upper end 2 c of the bathtub 2. A water spout portion 4 is formed in the bathtub water spouting device 1 for discharging water horizontally into the bathtub 2 in a horizontal direction and in a strip shape.

  As shown in FIGS. 3 and 4, the bathtub device 3 is further provided with a first flow passage 8 extending from the first water intake port 6, and is provided on the first flow passage 8 and sucks water in the bathtub 2. A pump 10 for pumping to the downstream side, a three-way valve 12 for controlling the flow of water at the downstream end of the first flow passage 8, a second flow passage 14 extending from the three-way valve 12 to the outlet 4 side, and a three-way valve 12 Provided in the downstream portion of the second flow path 14, the third flow path 16 extending separately from the second flow path 14, the blow water spouting portion 18 that blows water supplied from the third flow path 16 into the bath 2, and Pump unit 20, a fourth flow passage 24 extending from the second intake port 22 to the jet pump unit 20, a rising pipe 26 extending vertically upward from the jet pump unit 20, and control for controlling the pump 10 and the three-way valve 12 A section 28 and an operation section 30 operated by the user H; It is provided.

  The pump 10 is electrically connected to the control unit 28, and is driven and controlled by the control unit 28.

  The three-way valve 12 can selectively supply the water supplied from the first flow passage 8 to either or both of the second flow passage 14 and the third flow passage 16. The three-way valve 12 can freely change the distribution ratio of the flow rate. The three-way valve 12 is electrically connected to the control unit 28, and is electrically controlled to open and close by the control unit 28. The second flow passage 14 forms a flow passage extending from the three-way valve 12 to the jet pump unit 20.

  The control unit 28 is attached to the back side of a bathroom wall (not shown). The control unit 28 is electrically connected to the pump 10, the three-way valve 12, the operation unit 30, and the like, and can operate the above-described portions. The control unit 28 receives control signals from the operation unit 30 or controls each device according to a stored program or the like. The control unit 28 includes a storage device (not shown) such as a memory that can appropriately control the bathtub spouting device 1 and an arithmetic device (not shown).

  The operation unit 30 is provided so that the user H can operate the bathtub water discharging device 1 ON and OFF, and is attached to the wall surface in the bathroom. Information that the user H operates the operation unit 30 is sent from the operation unit 30 to the control unit 28 by an electric signal.

  The jet pump unit 20 includes a chamber portion 32 in which water drawn in by jet pump action is stored, and a jet nozzle 34 disposed at the downstream end of the second flow passage 14. By employing the jet pump unit 20, the bathtub water spouting device 1 can perform shoulder water spouting with a large flow rate from the spout 4 using the relatively small pump 10.

  The chamber portion 32 forms a box-shaped water storage chamber, and the downstream end of the fourth flow path 24 is connected to the chamber portion 32. The chamber portion 32 is in communication with the bathtub 2. A jet nozzle 34 is mounted vertically upward at the bottom of the chamber portion 32. On the upper surface of the chamber portion 32, an opening is formed at a position facing the jet nozzle 34, and a rising pipe 26 extends upward from the opening.

The jet nozzle 34 jets the water supplied from the pump 10 through the chamber portion 32 into the riser 26. The jet nozzle 34 jets water as it passes through the chamber portion 32, thereby inducing a jet pump action to draw water from the inside of the chamber portion 32. The jet nozzle 34 is formed so that the diameter of the flow passage therein is smaller than the diameter of the second flow passage 14 on the upstream side of the jet nozzle 34. Accordingly, the water pumped by the pump 10 is further accelerated in the jet nozzle 34 and is jetted out of the jet nozzle 34 as a high speed water stream. The high-speed jet jetted from the jet nozzle 34 has its flow rate increased and its flow rate decreased by drawing water in the chamber portion 32.
The riser 26 forms a circular tubular flow path extending vertically upward from the chamber portion 32.

Next, the bathtub water discharger 1 will be described with reference to FIGS. 5 to 9.
FIG. 5 is a partially enlarged cross-sectional view showing the water discharging apparatus for a bath according to the first embodiment of the present invention shown in FIG. 3 with the left and right sides of the paper reversed. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6, and FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 9 is the front view which looked at the water discharging apparatus for bathtubs by 1st Embodiment of this invention from the front.

  The water spouting device 1 for a bathtub temporarily stores the water flowing in from the uprising pipe 26 and extends the storage water inside itself, and an inclined portion 42 provided between the storage chamber 36 and the throttle channel 38. The water discharge port 4 is formed in a wide shape extending in the left-right direction, and a throttle flow path 38 which forms a flow path narrower than the storage chamber 36 and extends to the water discharge port 4.

  The reservoir 36 is connected to the downstream end of the riser 26. The storage chamber 36 is formed so that the inside thereof extends in the left-right direction. The storage chamber 36 is formed so that the front side of the side wall 36 e extends in the left-right direction in top view. The side wall 36 e of the storage chamber 36 is formed so as to be gradually curved forward as going from the rear side to the front side. The storage chamber 36 forms a flow path extending in the left-right direction, and decelerates and temporarily stores water in the storage chamber 36 and spreads the water in the left-right direction.

  The storage chamber 36 is provided with a rib 44 between the connecting portion of the ascent pipe 26 and the inclined portion 42. The rib 44 is disposed in the vicinity of the connecting portion of the riser 26. The rib 44 is formed so as to form a convex portion projecting downward from the ceiling surface 36 d and to reduce the flow passage cross-sectional area between it and the opposing bottom surface 36 b. The rib 44 is formed to traverse the inside of the storage chamber 36 in the left-right direction from the right side wall 36 e of the storage chamber 36 to the left side wall. The rib 44 may be formed only in the region near the side wall 36e.

  The rib 44 reduces the cross-sectional area of the flow path and accelerates the decelerated water flowing into the storage chamber 36 again, and the water flowing along the side wall 36 e of the storage chamber 36 separates from the curved surface of the side wall 36 e Suppress the formation of vortices. Since the flow passage cross-sectional area between the rib 44 and the bottom surface 36b of the storage chamber 36 narrows substantially uniformly in the left-right direction, the water is accelerated forward in the left-right direction substantially uniformly. The rib 44 forms a left-right flow rate uniforming means that makes the flow rate of water flowing into the downstream throttle channel 38 substantially uniform in the left-right direction.

  The inclined portion 42 forms an inclined surface rising from the storage chamber 36 toward the throttle channel 38 on the bottom surface between the storage chamber 36 and the throttle channel 38. The inclined portion 42 is formed in the same shape in the left-right direction, and the length and the inclination angle in the front-rear direction are formed constant at any position. The inclined portion 42 is formed to gradually reduce the flow passage cross-sectional area in the vertical direction as it goes to the front side. Thus, the inclined portion 42 can be gradually accelerated while suppressing disturbance of the flow of water.

  An upstream end 42 a of the inclined portion 42 which is a connecting portion with the storage chamber 36 is formed to extend in parallel with an imaginary line A connecting the left and right end portions 4 b of the water discharge port 4. The downstream end 42b of the inclined portion 42 (and the inlet 38b of the throttle channel 38), which is a connecting portion with the throttle channel 38, is also formed to extend parallel to the imaginary line A connecting the left and right end portions 4b of the water discharge port 4 It is done. The length L2 from the upstream end 42a of the inclined portion 42 through the central portion 38c of the throttle channel 38 to the water discharge port 4 is the water discharge port from the upstream end 42a through the left and right end portions 38d of the throttle channel 38 It is formed shorter than the length L1 in the front-rear direction up to four.

  The spout portion 4 forms an inside and horizontal opening on the upper end portion 2c of the bath 2, and spout water toward the neck and shoulder of the user sitting in the bath with a wide water flow in the left and right direction It is designed to perform shoulder water spouting. The spout portion 4 is formed in a curved manner so that the central portion 4a in the left-right direction of the spout portion 4 is positioned rearward of the left and right end portions 4b in top view. The spout portion 4 is formed in an arc shape along the arc-shaped vertical wall 2 b in top view. Moreover, the spout portion 4 forms a rectangular opening in a front view. The width of the opening of the spout 4 is about the width of the shoulder of the user, and the height of the opening is about several millimeters, so that a spout of film-like water is made from the spout 4.

Next, the throttle channel 38 will be described in detail with reference to FIGS. 5 to 9.
The throttle channel 38 is formed between the inclined portion 42 and the water discharge port 4. The throttle channel 38 is formed such that the height of the channel is lower than the height of the channel in the storage chamber 36 and the inclined portion 42. Furthermore, the throttling channel 38 has a channel cross-sectional area smaller than the channel cross-sectional area of the storage chamber 36 and the channel cross-sectional area of the inclined portion 42 so as to accelerate the inflowing water. The bottom surface 38 a of the throttle channel 38 is substantially flat. In the bottom of the throttle channel 38, the inclined portion 42, and the storage chamber 36, a groove portion 40 for draining water is formed to suppress the remaining of water.

  The throttle channel 38 is formed so that the inlet 38b is formed in a straight line in a top view and the central portion 38c in the left-right direction of the outlet (water discharge port 4) is positioned rearward of the left and right end portions 38d. It is done. The throttling channel 38 has a flow rate adjusting means that makes the decrease in the flow velocity of water passing through the central portion 38c smaller than the decrease in the flow velocity of water passing through the left and right end portions 38d on the left and right ends of the central portion 38c. There is. The flow velocity adjusting means of the throttle channel 38 is formed by making the length X2 of the central portion 38c of the throttle channel 38 shorter than the length X1 of the left and right end portions 38d. The length X2 is a length from the inlet 38b of the central portion 38c to the spout portion 4. The length X1 is a length from the inlet 38b of the left and right end portions 38d to the water discharge port 4. In addition, the throttle channel 38 forms the height H1 of the channel from the inlet 38b to the water discharge port 4 constant. Furthermore, in the flow velocity adjusting means of the throttle channel 38, the height H1 of the channel from the central portion 38c to the left and right end portions 38d of the throttle channel 38 is formed to be constant. As a result, the pressure loss of water passing through the central portion 38c can be made smaller than the pressure loss of water passing through the left and right end portions 38d without changing the height of the flow path. Therefore, by setting the height of the water discharge port 4 to a constant height from the central portion 38c to the left and right end portions 38d, the film thickness of the water discharged in the form of a wide film is disturbed and the film is discharged. The flow velocity of the water spouted from the central portion 38c of the spout portion 4 is made higher than the flow velocity of the water spouted from the left and right end portions 38d of the spout portion 4 while suppressing the water from being divided left and right. It can be enlarged. If the difference between the height of the central portion 38c and the height of the left and right end portions 38d is substantially constant so that the height H1 is constant, the height of the central portion 38c is, for example, the left and right end portions 38d. Also included are cases where the height is 90% to 110% of the height.

  As shown in FIG. 8, the inlet 38b of the throttle channel 38 is formed in a rectangular shape, and the height H1 of the channel is formed constant from the central portion 38c to the left and right end portions 38d. Further, as shown in FIG. 9, the water discharge port 4 which is an outlet of the throttle channel 38 is also formed in a rectangular shape in a front view, and from the central portion 38c (central portion 4a) to the left and right end portions 38d (left and right end portions 4b) The height H2 of the flow path is constant. The height H 2 of the flow passage of the spout 4 is narrowed slightly lower than the height H 1 of the flow passage of the throttle passage 38. The height H2 of the flow passage of the spout 4 may be made the same as the height H1 of the flow passage of the throttle flow passage 38. If the difference between the height of the central portion 4a and the height of the left and right end portions 4b is substantially constant so that the height H2 is constant, for example, the height of the central portion 4a is equal to the left and right end portions 4b. Also included are cases where the height is 90% to 110% of the height.

Next, the operation (action) of water spouting from the spout portion 4 by the bath spouting device 1 will be described with reference to FIGS. 10 and 11.
The control unit 28 drives the pump 10 by the operation of the operation unit 30 by the user H. The pump 10 sucks the water in the bathtub 2 from the first flow passage 8 and pumps the water to the downstream second flow passage 14. The water is supplied from the second flow path 14 to the jet nozzle 34, and the hot and cold water jetted from the jet nozzle 34 ascends the rising pipe 26 while drawing in the water in the chamber portion 32 by the jet pump action. To flow.

  As shown in FIG. 10, the water flowing into the storage chamber 36 from the ascent pipe 26 is decelerated in the storage chamber 36 and flows so as to spread in the left-right direction as shown by an arrow F1. This water flows between the rib 44 and the bottom surface 36b before it forms a vortex by peeling from the curved surface of the side wall 36e or the like. At this time, since the flow passage cross-sectional area between the rib 44 and the bottom surface 36b is narrowed, water is accelerated as shown by the arrow F2. F2 is shown by a dotted line as it flows under the rib 44. At this time, since the flow passage cross-sectional area between the rib 44 and the bottom surface 36 b is narrowed substantially uniformly in the left-right direction, the water is accelerated substantially uniformly at any position in the left-right direction. At this time, the ribs 44 accelerate while maintaining the vectors of the respective water flows. Therefore, by accelerating the water, it is possible to suppress the formation of a vortex and to form a flow that is substantially uniformly rectified in the left-right direction.

  The water having passed through the rib 44 is decelerated again in the storage chamber 36 and further spreads in the left-right direction, as indicated by an arrow F3. At this time, the water is suppressed from being disturbed to such an extent as to form a vortex, and a substantially uniformly rectified flow can be maintained at any position in the left-right direction.

The inclined portion 42 is formed to gradually decrease the flow passage cross-sectional area toward the front side. Therefore, the water spread in the left and right direction is gradually accelerated again at the inclined portion 42 as shown by the arrow F4. Further, an upstream end 42 a of the inclined portion 42 which is a connection portion between the storage chamber 36 and the inclined portion 42 is formed to extend in parallel with an imaginary line A connecting the left and right end portions 4 b of the water discharge port 4. Therefore, the water flows into the inclined portion 42 from the upstream end 42 a while suppressing the disturbance and maintaining the vector of the water flow. Therefore, water can flow so as to spread relatively uniformly to the imaginary line A. Further, the downstream end 42 b (and the inlet 38 b of the throttle channel 38) of the inclined portion 42, which is a connection portion between the throttle channel 38 and the inclined portion 42, is formed to extend in parallel with the imaginary line A. Therefore, the water flows into the throttling channel 38 from the downstream end 42 b while suppressing the disturbance and maintaining the vector of the water flow. Therefore, water can flow so as to spread relatively uniformly to the imaginary line A. Therefore, the flow of water is gradually accelerated while suppressing disturbance in the inclined portion 42, and flows into the throttling channel 38 in a state in which the substantially uniformly rectified flow in the left-right direction is maintained.
According to the structure of the inclined portion 42 as in this embodiment, the upstream end 42 a and the downstream end 42 b of the inclined portion 42 are curved and formed corresponding to the shape of the water discharge port 4 as in the comparative example described later. It is possible to prevent the water flow vector from being curved along the curved inclined portion 42 as in the case where it is impossible to perform uniform right and left water discharge.
When the connecting portion between the throttle channel 38 and the inclined portion 42 is substantially parallel to be inclined within a relatively small angle range with respect to the imaginary line A, for example, the parallel with the throttle channel 38 is "parallel". The case where the connecting portion with the portion 42 is inclined at an angle of -5 degrees to 5 degrees with respect to the imaginary line A is included. Similarly, in the “parallel” case, when the connection portion between the storage chamber 36 and the inclined portion 42 is substantially parallel to be inclined within a relatively small angle range with respect to the imaginary line A, for example, the storage chamber 36 and the inclined portion The case where the connecting portion with 42 is inclined at an angle of -5 degrees to 5 degrees with respect to the imaginary line A is also included.

  The water flowing in from the inclined portion 42 is further accelerated in the throttle channel 38. Water flows from the inlet 38b of the throttling channel 38 to the outlet 4 while maintaining a substantially uniformly rectified flow direction when it flows in, as shown by the arrow F5. Thus, although the throttling channel 38 basically has a function to accelerate water, the throttling channel 38 is, for example, due to pressure loss due to the resistance of the wall surface of the channel such as the bottom surface 38a (see FIG. 5) or the ceiling surface. The water passing through is reduced in flow velocity by a predetermined amount. As shown in FIG. 6, the pressure loss of water passing through the central portion 38c of the throttle passage 38 is made smaller than the pressure loss of water passing through the left and right end portions 38d by the flow velocity adjusting means of the throttle passage 38. Can. Therefore, the decrease in the flow velocity of water passing through the central portion 38c is smaller than the decrease in the flow velocity of water passing through the left and right end portions 38d. Therefore, the flow velocity of water discharged from the central portion 4a of the water discharge port 4 can be made larger than the flow velocity of water discharged from the left and right end portions 4b.

  As shown by arrow F6 in FIG. 10 and also as shown in FIG. 11, the water spouted from spout 4 is a stream of stable strip-like (water film-like) flowing water having a substantially constant width and thickness. Draw a parabola at the bottom and flow downward. The flying distance of water discharged from the central portion 4 a of the spout portion 4 is made larger than the flying distance of water discharged from the left and right end portions 4 b of the spout portion 4. Therefore, the water reachable range B to the upper body such as the shoulders and back of the user H in the posture sitting in the bathtub 2 is a range formed linearly in the left-right direction. The water landing range B has substantially the same height in the left-right direction, and is relatively uniform in the left-right direction. Since linear water discharge is performed for user H, the discharged water can be efficiently applied to user H, and user H can be given a relatively uniform feeling of bathing. , The user H's bathing feeling can be improved.

Next, referring to FIG. 13, as a comparative example, the structure of the bathtub spout system 201 provided with a throttle channel having a uniform length in the left-right direction and the operation of spouting water from the spout portion 204 by the bathtub spout system 201. The (action) will be described.
FIG. 13 schematically shows, as a comparative example, an internal flow path of a bathtub water discharger provided with a throttle flow path having a uniform length in the left-right direction, and water flowing into a storage chamber is a water discharge port portion It is a figure which shows a mode that the water discharge shape is curved, when discharging water from this.
The bathtub spout system 201 is formed such that a slope portion 242 provided on the downstream side of the storage chamber 236 is curved to a shape close to the shape of the spout portion 204. The upstream end 242 a and the downstream end 242 b of the inclined portion 242 are formed to be curved. Therefore, the vector of the water flowing into the inclined portion 242 bends along the curved inclined portion 242, and it becomes impossible to perform uniform water discharge from side to side.
The throttle channel 238 is formed to be curved such that the central portion 238c in the left-right direction of the inlet 238b and the outlet (water discharge port 204) is located rearward of the left and right end portions 238d in a top view. The throttle channel 238 is formed such that the length in the front-rear direction of the central portion 238 c and the length in the front-rear direction of the left and right end portions 238 d are the same. The throttling channel 238 forms a constant height H of the channel from the central portion 238 c of the throttling channel 238 to the left and right end portions 238 d.

  The water flowing into the storage chamber 236 decelerates and flows so as to spread in the left-right direction. The vector of water flowing from the reservoir 236 into the slope 242 bends along the curved slope 242. The water flowing in from the inclined portion 242 is further accelerated in the throttle channel 238. At this time, the pressure loss of water passing through the central portion 238c of the throttle channel 238 is substantially the same as the pressure loss of water passing through the left and right end portions 238d. Therefore, the decrease in the flow velocity of water passing through the central portion 238c is substantially the same as the decrease in the flow velocity of water passing through the left and right end portions 238d. Therefore, the flow velocity of water discharged from the central portion 204 a of the water discharge port 204 and the flow velocity of water discharged from the left and right end portions 204 b of the water discharge port 204 are substantially the same.

  In FIG. 13, as shown by arrow F7, the shape of the spouted water from spout 204 is curved. The flying distance of water discharged from the central portion 204a of the spout portion 204 is substantially the same as the flying distance of water discharged from the left and right end portions 204b. Therefore, the water reachable range C to the upper body such as the shoulders and back of the user H in the posture sitting in the bathtub is a range curved in a U-shape around the neck of the user H. The water landing range C is U-shaped when viewed from the rear of the user H, and the left and right center portions are positioned slightly lower, and the left and right end portions are positioned slightly upper. Therefore, part of the spouted water lands back and forth across the shoulder of the user H. Furthermore, both ends of the discharged water flow jump over the shoulder of the user H and land on the water surface area D in front of the user H. The water jumping over the shoulder of the user H is waste water which can not be bathed as shoulder water. In addition, water landing on the water surface area D may cause water splash on the water surface, which may cause the user H to feel uncomfortable.

According to the bathtub water discharging apparatus 1 according to the first embodiment of the present invention, the throttling channel 38 passes the reduction in the flow velocity of water passing through the central portion 38c of the throttling channel 38 through the left and right end portions 38d. Since the flow velocity adjusting means is provided to make the flow velocity smaller than the decrease in the flow velocity of water, the flow velocity of water discharged from the central portion 4a of the water discharge port 4 is discharged from the left and right end portions 4b of the water discharge port 4 It can be greater than the water flow rate. Therefore, the water spouted from the central portion 4a of the spout 4 can be spouted to a position forward of the water spouted from the left and right end portions 4b. Therefore, according to the present invention, even if the spout portion 4 is curved and formed such that the central portion 4a of the opening portion of the spout portion 4 is positioned rearward of the left and right end portions 4b, the shoulder of the user The water discharge shape of the water flow discharged toward the vicinity is unlikely to be curved and linear, and the user's bathing comfort can be improved.
Further, according to the present invention, the water which has flowed into the storage chamber 36 is spread in the left-right direction in the storage chamber 36 and then passes through the throttle channel 38 provided with the flow velocity adjusting means. As a result, a broad water flow in the left-right direction is easily formed, and the water discharge shape of the water flow is unlikely to be curved and can be made linear, and the user's bathing comfort can be improved.

  Further, according to the bathtub water discharging apparatus 1 according to the first embodiment of the present invention, the flow velocity adjusting means of the throttle channel 38 has a length X2 of the central portion 38c of the throttle channel 38 in the front-rear direction. It is formed by making it shorter than length X1 of the front-back direction of. As a result, the pressure loss of water passing through the central portion 38c of the throttle channel 38 can be made smaller than the pressure loss of water passing through the left and right end portions 38d. Therefore, the flow velocity of water spouted from the central portion 4 a of the spout portion 4 can be made larger than the flow velocity of water spouted from the left and right end portions 4 b of the spout portion 4. Therefore, according to the present invention, even if the spout portion 4 is curved and formed such that the central portion 4a of the opening portion of the spout portion 4 is positioned rearward of the left and right end portions 4b, it is relatively simple. According to the configuration, it is possible to make it difficult for the water discharge shape of the water flow discharged toward the vicinity of the user's shoulder to be curved.

  Furthermore, according to the bathtub water discharging apparatus 1 according to the first embodiment of the present invention, the water discharge port 4 is formed by making the height of the flow path from the central portion 4a to the left and right end portions 4b constant. Thus, the pressure loss of water passing through the central portion 4a of the water discharge port 4 can be made smaller than the pressure loss of water passing through the left and right end portions 4b. Therefore, according to the present invention, by making the height of the water discharge port 4 constant from the central portion 4a to the left and right end portions 4b, the film thickness of the water discharged in the form of a wide film is disturbed. The flow velocity of the water discharged from the central portion 4 a of the water discharge port 4 is discharged from the left and right end portions 4 b of the water discharge port 4 while suppressing that the film-like water discharged is divided to the left and right. Can be greater than the flow rate of water.

  Furthermore, according to the bathtub water discharging apparatus 1 according to the first embodiment of the present invention, the inclined portion 42 suppresses the acceleration of water toward the throttling channel 38 and the generation of the turbulent flow. Furthermore, a connection portion between the inclined portion 42 and the throttle channel 38 is formed to extend in parallel with an imaginary line A connecting the left and right end portions 4 b of the water discharge port 4. Therefore, even in the case where the throttling flow path 38 is provided with a flow velocity adjusting means that makes the decrease in the flow velocity of water passing through the central portion 38c smaller than the decrease in the flow velocity of water passing through the left and right end portions 38d. Water flowing into the throttle channel 38 from the inclined portion 42 can flow so as to spread relatively uniformly with respect to the imaginary line A. Therefore, according to the present invention, it is possible to suppress that the water flowing from the inclined portion 42 to the throttling channel 38 is drawn to the flow of the central portion 38c where the decrease in the flow velocity of the water is small, thereby causing contraction. Thereby, it can be suppressed that the spouting shape of the water stream spouted toward the vicinity of the shoulder of the user H is disturbed.

  Furthermore, according to the bathtub water discharging apparatus 1 according to the first embodiment of the present invention, the inclined portion 42 accelerates the water traveling toward the throttle channel 38 and suppresses the generation of the turbulent flow. Furthermore, a connection portion between the storage chamber 36 and the inclined portion 42 is formed to extend in parallel with an imaginary line A connecting the left and right end portions 4 b of the water discharge port 4. Therefore, even in the case where the throttling flow path 38 is provided with a flow velocity adjusting means that makes the decrease in the flow velocity of water passing through the central portion 38c smaller than the decrease in the flow velocity of water passing through the left and right end portions 38d. Water flowing from the storage chamber 36 to the inclined portion 42 can flow so as to spread relatively uniformly with respect to the imaginary line A. Therefore, according to the present invention, the water flowing into the throttling channel 38 from the inclined portion 42 flows so as to spread relatively uniformly, and is drawn to the flow of the central portion 38c where the decrease in the flow velocity of water is small. Can be suppressed. Thereby, it can be suppressed that the spouting shape of the water stream spouted toward the vicinity of the shoulder of the user H is disturbed.

Next, referring to FIG. 12, a water spouting device for a bath according to a second embodiment of the present invention will be described. The second embodiment is an example formed by changing the heights of the throttling channel and the spout portion of the bathtub spout system according to the present invention. FIG. 12 is a front view of a bathtub water discharging apparatus according to a second embodiment of the present invention as viewed from the front.
The bathtub water discharging apparatus 101 according to the second embodiment has substantially the same structure as the bathtub water discharging apparatus 1 according to the above-described first embodiment, and therefore, only points different from the first embodiment of the second embodiment of the present invention. The same reference numerals are given to the same parts in the drawings and the explanation will be omitted.

  As shown in FIG. 12, in the throttle channel 138 of the bathtub water discharging apparatus 101, the height Y1 of the channel in the left and right end portions 138d is higher than the height Y2 of the channel in the central portion 138c of the throttle channel 138 Are formed, and such a structure forms flow rate adjusting means. Further, the water discharge port portion 104 is also formed so that the height Y1 of the flow path of the left and right end portions 104b is higher than the height Y2 of the flow path of the central portion 104a. ing. The throttling channel 138 has a constant height Y2 of the channel from the inlet 138b to the spout 104 in the central portion 138c. Furthermore, the throttling flow path 138 forms the height Y1 of the flow path from the inlet 138b to the water discharge port 104 at the left and right end portions 138d. Thus, the pressure loss of water passing through the central portion 138c of the throttle channel 138 can be made smaller than the pressure loss of water passing through the left and right end portions 138d. The reduction in the flow velocity of water passing through the central portion 138c of the throttle channel 138 is smaller than the reduction in the flow velocity of water passing through the left and right end portions 138d. Therefore, the flow velocity of water discharged from the central portion 104 a of the water discharge port portion 104 can be made larger than the flow velocity of water discharged from the left and right end portions 104 b of the water discharge port portion 104.

According to the bathtub water discharging apparatus 101 according to the second embodiment of the present invention, the throttling channel 138 passes the reduction in the flow velocity of water passing through the central portion 138c of the throttling channel 138 through the left and right end portions 138d. Since the flow velocity adjusting means is provided to make the flow velocity smaller than the decrease in the flow velocity of water, the flow velocity of water discharged from the central portion 104 a of the water discharge port 104 is discharged from the left and right end portions 104 b of the water discharge port 104 It can be greater than the water flow rate. Therefore, the water discharged from the central portion 104 a of the water discharge port 104 can be discharged to a position forward of the water discharged from the left and right end portions 104 b. Therefore, according to the present invention, even if the spout portion 104 is curved and formed such that the central portion 104a of the opening portion of the spout portion 104 is positioned rearward of the left and right end portions 104b, the shoulder of the user The water discharge shape of the water flow discharged toward the vicinity is unlikely to be curved and linear, and the user's bathing comfort can be improved.
Further, according to the present invention, the water which has flowed into the storage chamber 36 is spread in the left-right direction in the storage chamber 36 and then passes through the throttle channel 138 provided with the flow velocity adjusting means. As a result, a broad water flow in the left-right direction is easily formed, and the water discharge shape of the water flow is unlikely to be curved and can be made linear, and the user's bathing comfort can be improved.

REFERENCE SIGNS LIST 1 bathtub spout 2 bathtub 3 bathtub 4 spout 4 reservoir 36 reservoir 38 throttle channel 38 c central portion 38 d right and left end portion 42 sloped portion 42 a upstream end 42 b downstream end 101 spout dispenser 104 spout 104 a central portion 104 b Left and right end portion 138 Throat flow path 138c Central portion 138d Left and right end portion 201 Bath tub discharge device 204 Water spout portion 204a Center portion 204b Left and right end portion 238 Throat flow path 238c Central portion 238d Left and right end portion

Claims (5)

A bathtub spouting device installed in a tub and spouting a wide water flow in the left-right direction toward the shoulder of a user sitting in the tub,
A reservoir which temporarily stores water flowing in from the supply pipe and extends in the left-right direction, and a storage chamber;
A water discharge port portion which is formed in a wide shape extending in the left and right direction and whose center part in the left and right direction is curved so as to be positioned behind the left and right end parts;
And a throttle channel forming a channel narrower than the storage chamber and extending to the water discharge port,
The throttling channel is provided with a flow rate adjusting means for making the reduction of the flow velocity of water passing through the central portion smaller than the reduction of the flow velocity of water passing through the left and right end portions. apparatus.   The bathtub according to claim 1, wherein the flow velocity adjusting means of the throttle channel is formed by making the length in the front-rear direction of the central portion of the throttle channel shorter than the length in the front-rear direction of the left and right end portions. Water discharge device.   The bathtub spouting device according to claim 2, wherein the spout portion is formed by making the height from the central portion to the left and right end portions constant. The bathtub water discharging apparatus further has an inclined portion rising from the storage chamber to the throttle channel at a bottom surface between the reservoir and the throttle channel,
The water discharge device for a bathtub according to claim 2 or 3, wherein a connection portion between the throttle channel and the inclined portion is formed to extend in parallel with an imaginary line connecting left and right end portions of the water discharge port. The bathtub water discharging apparatus further has an inclined portion rising from the storage chamber to the throttle channel at a bottom surface between the reservoir and the throttle channel,
The bathtub according to any one of claims 2 to 4, wherein a connection portion between the storage chamber and the inclined portion is formed to extend in parallel with a virtual line connecting the left and right end portions of the water discharge port. Water discharge device.

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