JP7561547B2 - Water discharge device and water discharge system - Google Patents

Description

This disclosure relates to a water discharge device and a water discharge system.

Water discharge devices that discharge a water flow for purposes such as massaging the bather are known. For example, a water discharge device has been proposed that includes a water discharge section that discharges a jet of water and a water discharge section that discharges a ring-shaped film-like flow of water (Patent Document 1). In this water discharge device, the jet of water is surrounded by a ring-shaped film of water to prevent splashing of the jet of water.

Japanese Patent Application Publication No. 9-103381

In the technology disclosed in Patent Document 1, the film-like flow is annular. The annular film-like flow narrows as it moves away from the water discharge section due to the influence of surface tension, and merges with the inner jet flow early on. For this reason, depending on the distance from the water discharge section where the jet flow hits, it is not possible to prevent the spray of droplets from the jet flow from being prevented.

This disclosure has been made in this context, and one exemplary purpose of one aspect of the disclosure is to provide a technology that can more reliably prevent the scattering of droplets from a jet.

In order to solve the above problem, a water discharge device according to one embodiment of the present disclosure includes a jet water discharge section that discharges a jet of water, and a shower flow water discharge section that discharges a shower flow that passes above the jet of water. All of the water discharge ports of the shower flow water discharge section are located above the water discharge ports of the jet water discharge section.

Another aspect of the present disclosure is a water discharge system. This water discharge system includes a tank body and the above-mentioned water discharge device that discharges water into the tank body.

Yet another aspect of the present disclosure is a water discharge system. This water discharge system includes a tank body and a water discharge device fixed to the tank body. The water discharge device includes a jet water discharge section that discharges a jet of water into the tank body, and a shower flow water discharge section that discharges a shower flow that passes above the jet of water into the tank body.

Yet another aspect of the present disclosure is a water discharge system. This water discharge system includes a tank body and a water discharge device that takes in water within the tank body and discharges it into the tank body. The water discharge device includes a jet water discharge section that discharges a jet of water into the tank body, and a shower flow water discharge section that discharges a shower flow that passes above the jet of water into the tank body.

FIG. 1 is a configuration diagram of a water discharge system according to an embodiment. FIG. 1 is a configuration diagram of a water discharge system according to an embodiment. FIG. 2 is a schematic front view showing the water discharge device of FIG. 1 together with the surrounding structure. FIG. 2 is a schematic plan view showing the water discharge device of FIG. 1 together with the surrounding structure. 2 is a diagram showing the water spouting direction of each water spouting section of the water spouting device of FIG. 1 . FIG. FIG. 11 is a configuration diagram of a water discharge system according to a modified example. FIG. 7 is a schematic front view showing the water discharge device of FIG. 6 together with the surrounding structure.

The following describes the embodiments with reference to the drawings. The same or equivalent components, parts, and processes shown in each drawing are given the same reference numerals, and redundant descriptions are omitted as appropriate.

Please refer to Figures 1 and 2. Figure 1 is also a schematic side view of the water discharge device 10. Figure 2 is also a schematic front view of the water discharge device 10. The water discharge system 18 is used in a sanitary facility 12. In this embodiment, the sanitary facility 12 is a bathroom facility.

The water discharge system 18 includes a water discharge device 10, a tank body 20 capable of receiving water discharged from the water discharge device 10, a water supply passage 22 that supplies water from the tank body 20 to the water discharge device 10, a valve device 24 and a pump 26 provided midway along the water supply passage 22, and a control device 28 that controls the valve device 24 and the pump 26.

Hereinafter, for ease of explanation, the horizontal direction along the water discharge direction of the water discharge device 10 will be referred to as the front-to-back direction X, the horizontal direction perpendicular to the front-to-back direction X will be referred to as the left-to-right direction Y, and the direction perpendicular to the front-to-back direction X and the left-to-right direction Y will be referred to as the up-to-down direction Z. When looking at the water discharge device 10 from the water discharge holes 38, 40 side in the front-to-back direction X, the near side (i.e. the water discharge holes 38, 40 side) will be referred to as the front side, and the far side will be referred to as the rear side. These directional notations do not limit the usage position of the water discharge device 10, and the water discharge device 10 can be used in any position depending on the application.

The tank body 20 is a bathtub in a bathroom facility. Water (not shown) in the tank body 20 is supplied to the water discharge device 10 via a water supply passage 22.

The water supply passage 22 includes an upstream passage 22a provided upstream of the valve device 24, and a first downstream passage 22b and a second downstream passage 22c provided downstream of the valve device 24. A pump 26 is provided in the middle of the upstream passage 22a. The first downstream passage 22b is a passage for supplying water to the jet water discharge section 50 (described later) of the water discharge device 10, and is connected to the valve device 24 on the upstream side and the jet water discharge section 50 on the downstream side. The second downstream passage 22c is a passage for supplying water to the shower flow water discharge section 52 (described later), and is connected to the valve device 24 on the upstream side and the shower flow water discharge section 52 on the downstream side.

The valve device 24 can switch between communication between the first downstream water channel 22b and the second downstream water channel 22c and the upstream water channel 22a. The valve device 24 is configured, for example, using a switching valve such as a multi-way valve or multiple opening and closing valves.

The valve device 24 communicates both the first downstream water passage 22b and the second downstream water passage 22c with the upstream water passage 22a through control by the control device 28 or manual operation. At this time, the pump 26 sucks in and pressurizes the water in the tank body 20, supplying water to the jet water discharge section 50 and the shower flow water discharge section 52. As a result, a jet F1 is discharged from the jet water discharge section 50, and a shower flow F2 is discharged from the shower flow water discharge section 52.

The water discharge device 10 comprises a housing 32, and a jet water discharge section 50 and a shower flow water discharge section 52 formed inside the housing 32. The housing 32 is fixed to the base 30 of the sanitary equipment 12. In this embodiment, the flange portion of the tank body 20 provided on the periphery of the top opening of the tank body 20 constitutes the base 30. The housing 32 is fixed to the base 30 using a fixing structure (not shown), such as a screw structure or a claw and claw receiver.

The jet water discharge section 50 includes two jet water channels 34 that communicate with the first downstream water channel 22b, and a jet water discharge hole 38 provided downstream of the two jet water channels 34. The number of jet water channels 34 and jet water discharge holes 38 is not particularly limited, and may be one, or three or more.

The shower flow discharge section 52 includes a shower water channel 36 that communicates with the second downstream water channel 22c, and a plurality of shower water discharge holes 40 provided downstream of the shower water channel 36. The number of shower water channels 36 is not particularly limited, and may be two or more.

In this embodiment, water is supplied to the jet water channel 34 and the shower water channel 36 from vertically below.

The two jet water discharge holes 38 of the jet water discharge section 50 open into the front part of the housing 32. When viewed from the front (i.e., viewed from the front in the front-rear direction X), the jet water discharge hole 38 has a rectangular shape with the left-right direction X as the long side and the up-down direction Z as the short side. For example, the length of the jet water discharge hole 38 in the left-right direction Y is 32 mm and the length of the up-down direction Z is 8 mm. The two jet water discharge holes 38 are provided with an interval in the left-right direction Y.

The multiple shower water discharge holes 40 of the shower flow discharge section 52 open to the front part of the housing 32. The shape of the distribution range R of the multiple shower water discharge holes 40 is not particularly limited. It is a rectangle with the left-right direction X as the longitudinal direction and the up-down direction Z as the short side direction. In other words, the multiple shower water discharge holes 40 are arranged in a band shape with the left-right direction Y as the longitudinal direction. The distribution range R of the multiple shower water discharge holes 40 may be expressed as the smallest rectangle that can accommodate all the shower water discharge holes 40. The multiple shower water discharge holes 40 are circular and have the same diameter. The multiple shower water discharge holes 40 have a diameter in the range of 0.3 to 2.5 mm, for example.

All of the multiple shower water outlets 40 are located above the two jet water outlets 38. Each of the two jet water outlets 38 is located at a position that overlaps vertically with at least one shower water outlet 40. In other words, each of the two jet water outlets 38 is located at a position that at least partially overlaps vertically with the distribution range R of the shower water outlets 40.

In this example, the two jet water discharge holes 38 are each provided in a position where their entirety vertically overlaps with the shower water discharge holes 40. That is, the two jet water discharge holes 38 are each provided in a position where their entirety vertically overlaps with the distribution range R of the shower water discharge holes 40. In other words, the two jet water discharge holes 38 are each provided in a position that falls within the inside of the distribution range R of the shower water discharge holes 40 in a plan view (i.e., when viewed downward in the vertical direction Z from viewpoint Q).

See Figures 1, 3, and 4. The jet water discharge unit 50 discharges water supplied from the first downstream water passage 22b to the jet water passage 34 as a jet F1 from each of the two jet water discharge holes 38. The jet water discharge unit 50 discharges the jet F1 so that the flow direction and flow rate are constant over time. Here, the jet water discharge unit 50 discharges the jet F1 so that it hits the user's shoulder. Each figure shows the discharge range of the jet F1. The jets F1 discharged from the two jet water discharge holes 38 are closer to each other as they move forward.

Here, a "jet" is a water flow that satisfies at least one of the following conditions: "(i) a water flow that is thicker than the surrounding water flows, specifically a water flow with a diameter at least twice as large" and "(ii) a water flow that is not close to the surrounding water flows, specifically a water flow in which the water film that spreads concentrically at the point of impact does not overlap with the surrounding water flows" and that causes a sensation of stimulation on its own when it hits the user's body.

The shower flow discharge section 52 discharges water supplied from the second downstream water passage 22c to the shower water passage 36 as a shower flow F2 from the multiple shower water discharge holes 40. The shower flow discharge section 52 discharges the shower flow F2 so that the flow rate is constant over time. The shower flow discharge section 52 discharges the shower flow F2 so that it passes above the jet flow F1. Here, the shower flow discharge section 52 discharges the shower flow F2 so that it hits the user's neck. The discharge range of the shower flow F2 is shown in each figure. In this example, the jet flow F1 collides with the shower flow F2 (see range S1).

Here, a "shower stream" refers to a collection of multiple water streams of the same thickness that are so close together that the sensation of each individual stream cannot be felt; specifically, a collection of multiple water streams where the water film that spreads out in concentric circles at the point where the water hits overlaps with one of the multiple water streams.

The shower flow F2 is discharged in a parabolic shape that, in a side view (i.e., when viewed in the left-right direction Y), moves downward as it moves away from the shower water discharge hole 40. In this example, the jet F1 is discharged in a parabolic shape that is gentler than the parabolic shape of the shower flow F2 in a side view. The jet F1 may be discharged from the jet water discharge section 50 in a straight line. In this example, the shower flow F2 is discharged from the shower flow discharge section 52 in a side view so that it passes only above the jet F1 until it merges with the jet F1. The shower flow F2 may be discharged from the shower flow discharge section 52 so that it passes only above the jet F1 until it is received by the water in the tank body 20.

The above is the basic configuration of the water discharge system 18. Next, we will explain its effects.

A jet flow alone does not spread over the entire shoulder, so the bathing effect is poor, and a shower flow alone provides a weak stimulating sensation and therefore provides a poor massage effect. In contrast, according to this embodiment, the user can be showered with a powerful jet flow F1 and a wide shower flow F2 at the same time. This makes it possible to warm a wide area while providing a stimulating sensation. For example, the jet flow F1 can be directed at the shoulders to massage them, while the shower flow F2 can be directed at the neck and shoulders to warm a wide area.

When the water flow collides with an object such as a user, splashes are generated. Because the individual water streams of the shower flow F2 are thin, the resulting splashes are small and have low momentum, so even if the splashes splash onto the user's face, for example, the user experiences little or no discomfort. The jet flow F1 has a thick water flow, i.e., a high flow rate, so the resulting splashes are large and have high momentum, so if the splashes splash onto the user's face, for example, the user will experience discomfort. In contrast, in this embodiment, the shower flow F2 functions like a curtain to block the splashes of the jet flow F1. In other words, the range in which the splashes of the jet flow F1 splash are limited.

Specifically, the shower water channel 36 discharges a shower flow F2 so that it hits the user's neck, and the jet water channel 34 discharges a jet F1 so that it hits the user's shoulder. Therefore, although the collision of the jet F1 with the user's shoulder generates large, powerful splashes, the shower flow F2 limits the splashing of the jet F1 above the shower flow F2, preventing the splashing of the splashes, for example, onto the user's face. In other words, while the jet F1 is sprayed onto the shoulder, a body part close to the face, the shower flow F2 can prevent the large, powerful splashes generated by this from splashing onto the user's face.

It is also possible to discharge a film-like flow that passes above the jet F1, and this film-like flow can be used to prevent splashing caused by the jet F1. When discharging a film-like flow, water is discharged from a slit-shaped water discharge hole that is long in the left-right direction Y. Slit-shaped water discharge holes generally have weak strength in the center in the longitudinal direction, and are prone to deformation such as widening of the slit width in the center due to water pressure. Deformation can be avoided by widening the slit width (i.e. the width in the up-down direction Z) in advance. As the slit width becomes wider, the flow rate increases accordingly, requiring an expensive, high-powered pump 26, and the water discharge system 18 becomes expensive.

In contrast, in this embodiment, the shower flow F2 prevents splashing caused by the jet flow F1. Each of the multiple shower discharge holes 40 of the shower flow F2 is a small hole, so it is strong and does not easily deform. Therefore, the width in the vertical direction Z, i.e., the diameter, of the shower discharge hole 40 can be made smaller, and the flow rate is reduced accordingly, so an inexpensive, low-power pump 26 is sufficient, making the water discharge system 18 inexpensive.

The shower flow F2 does not merge early with the jet flow F1 due to the influence of surface tension, as occurs with an annular film flow.

Next, other characteristic configurations of the water discharge system 18 will be described.

Refer to FIG. 3. In front view, the water discharge range of the jet F1 falls within the water discharge range of the shower flow F2. In other words, in front view, the water discharge range of the jet F1 does not extend beyond the water discharge range of the shower flow F2. This is achieved, for example, by arranging the two jet water discharge holes 38 in a position that falls within the distribution range R of the shower water discharge holes 40 in a plan view.

The water discharge range of the jet F1 refers to the range through which the jet F1 passes from the jet water discharge section 50 until it hits an object such as a user, the shower flow F2, or a fixed structure, and is represented by the trajectory of the jet F1. The water discharge range of the shower flow F2 refers to the range through which the shower flow F2 passes from the shower flow discharge section 52 until it hits an object such as a user, or a fixed structure, and is represented by the trajectory of the shower flow F2. The "fixed structure" refers to a structure surrounding the jet F1 and the shower flow F2, and in this embodiment is the tank body 20.

By fitting the water discharge range of the jet F1 within the water discharge range of the shower flow F2, it is possible to more reliably prevent the droplets of the jet F1 from scattering forward or upward.

See Figure 5. The water discharge direction D1 of the jet water discharge section 50 is set downward relative to the water discharge direction D2 of the shower flow water discharge section 52. The water discharge direction D1 refers to the direction along the center line CL1 of the jet water discharge hole 38 of the jet water discharge section 50. The water discharge direction D2 refers to the direction along the center line CL2 of the shower water discharge hole 40 of the shower flow water discharge section 52.

The jet F1 tends to have more momentum than the shower flow F2, and therefore tends to fly in a straighter line than the shower flow F2. For this reason, if the water discharge direction D1 and the water discharge direction D2 are parallel, the jet F1 may collide with the parabolic shower flow F2 at a point P1 close to the jet water discharge section 50 (jet F1 shown by a two-dot chain line).

In contrast, in this embodiment, the water discharge direction D1 is more downward than the water discharge direction D2, so the jet F1 is prevented from colliding with the parabolic shower flow F2 at a point P1 close to the jet water channel 34. This allows the jet F1 to reach a point far from the jet water discharge section 50, widening the area that can be directly exposed to the jet F1. In this example, the jet F1 is caused to collide with the shower flow F2 at a point P2 far from the jet water discharge section 50. The jet F1 may also be received by the water in the tank body 20.

Refer to Figures 2 and 3. The shower water discharge holes 40 of the shower flow discharge section 52 are arranged without gaps in the left-right direction Y in a plan view (i.e., when viewed downward in the vertical direction Z from viewpoint Q). In other words, the shower water discharge holes 40 are continuously present in the left-right direction Y in a plan view. Although not particularly limited, in this embodiment, the shower water discharge holes 40 are arranged in two rows, one above the other. In this example, the shower water discharge holes 40 in each row are arranged at equal intervals in the left-right direction Y. The shower water discharge holes 40 in the upper row and the shower water discharge holes 40 in the lower row are offset in the left-right direction Y by one shower water discharge hole 40. The shower water discharge holes 40 in the upper row and the shower water discharge holes 40 in the lower row may be arranged to overlap each other vertically.

In these cases, in a plan view, the multiple water streams that make up the shower flow F2 are aligned in the left-right direction Y with no gaps between them, and the shower flow F2 takes on a film-like shape. This allows the shower flow F2 to more reliably prevent the splashing of droplets from the jet flow F1 compared to cases where this is not the case.

The present disclosure has been described above based on an embodiment. This embodiment is merely an example, and those skilled in the art will understand that various modifications are possible in the combination of each component and each processing process, and that such modifications are also within the scope of the present disclosure. Below, such modifications are described.

(Variation 1)
Unlike the embodiment, the jet water spouting section 50 may spout the jet F1 so that the flow direction changes with time.

See Figures 6 and 7. In this modified example, the jet water discharge section 50 further includes a fluid element 44. The flow path inside the fluid element 44 constitutes a part of the jet water channel 34, and the downstream end of the flow path constitutes the jet water discharge hole 38.

The fluid element 44 spouts the jet F1 so that the flow direction when it emerges from the jet water spouting hole 38 changes over time without changing the orientation of the entire water spouting device 10.

For example, in the example of Figure 7, the fluid element 44 changes the flow direction over time as it emerges from the jet water discharge hole 38 so that it oscillates in the left-right direction Y. In this case, a wavy jet F1 is discharged radially from the jet water discharge section 50. In Figure 7, the discharge range S3 of the wavy jet F1 is indicated by a dashed line.

For example, the fluid element 44 may be one that ejects a jet of water that has an axial velocity component along a predetermined axis and a radial velocity component perpendicular to the axis, and in which the radial velocity component changes over time so as to rotate around the axis. In this case, a spiral jet of water F1 is ejected radially from the jet ejection section 50.

Specific examples of the fluid element 44 are not particularly limited. For example, the fluid element 44 may be one that oscillates the flow direction of the jet F1 by colliding a pair of water currents in an internal merging chamber, as described in JP2008-517762A. For example, the fluid element 44 may be one that oscillates the flow direction of the jet F1 by utilizing Karman vortices, or one that oscillates the flow direction of the jet F1 by utilizing the Coanda effect.

When the flow direction of the jet F1 changes over time, the areas exposed to the jet F1 also change over time, so the water film formed at the areas exposed to the jet F1 becomes thinner than when the flow direction is constant over time, making splashes more likely to occur. Even under these circumstances, the shower flow F2 can prevent splashes caused by the jet F1 from being generated.

When the flow direction of the jet F1 changes over time, the water discharge range of the jet F1 becomes wider than when the flow direction is constant over time. Even in such a case, the water discharge range of the jet F1 falls within the water discharge range of the shower flow F2, so that the scattering of droplets caused by the jet F1 can be effectively prevented.

(Variation 2)
Unlike the embodiment, the jet water spouting section 50 may spout the jet F1 so that the flow rate changes over time.

For example, the jet water discharge section 50 may further include an air bubble supply section that intermittently supplies air bubbles to the water flowing through the jet water channel 34, thereby forming areas of low flow rate and areas of high flow rate in the flow direction of the jet F1.

For example, the jet water discharge section 50 may discharge the jet F1 so that the flow rate when it comes out of the jet water discharge hole 38 varies over time between zero and a positive value. In other words, the jet water discharge section 50 may discharge the jet F1 intermittently. This can be achieved, for example, by providing multiple jet water discharge holes 38 at the downstream end of the jet water channel 34 and opening and closing the multiple jet water discharge holes 38 with an impeller disposed in the jet water channel 34.

When the flow rate of the jet F1 changes over time, the thickness of the water film formed at the point exposed to the jet F1 also changes over time. For this reason, if the water film is exposed to a large flow rate of the jet F1 at a time when the thickness of the water film has become thin, splashes are likely to occur. Even under such circumstances, the shower flow F2 can prevent splashes caused by the jet F1 from being scattered.

(Variation 3)
Unlike the embodiment, the diameter of at least one shower outlet hole 40 may be different from the diameter of the other shower holes.

The shape of the multiple shower water outlet holes 40 is not limited to a circular shape, and may be, for example, a polygonal shape or other shape. The multiple shower water outlet holes 40 do not all have to be the same shape, and there may be a mixture of circular and polygonal shower water outlet holes 40.

(Variation 4)
Unlike the embodiment, at least one of the multiple shower water discharge holes 40 of the shower flow water discharge section 52 may be provided at the same height as the jet water discharge holes 38 of the jet water discharge section 50 or below the jet water discharge holes 38. For example, both ends of the distribution range R of the multiple shower water discharge holes 40 may be located at the same height as the jet water discharge holes 38 or below the jet water discharge holes 38.

(Variation 5)
A part of the water discharge range of the jet flow F1 may extend outside the water discharge range of the shower flow F2 in a front view.

(Variation 6)
In the embodiment, a case has been described in which the two jet water discharge holes 38 are each provided at a position that vertically overlaps with at least one shower water discharge hole 40, that is, a case in which the two jet water discharge holes 38 are each provided at a position that at least partially overlaps with the distribution range R of the shower water discharge holes 40. However, this is not limited to this, and it is sufficient that the water discharge range of the jet F1 and the water discharge range of the shower flow F2 at least partially overlap in a front view, and the two jet water discharge holes 38 may each be provided at a position that does not vertically overlap with any of the shower water discharge holes 40, that is, at a position that does not vertically overlap with the distribution range R of the shower water discharge holes 40.

(Variation 7)
The water spouting direction D1 of the jet water spouting section 50 may be parallel to the water spouting direction D2 of the shower flow water spouting section 52, or may be directed upward from the water spouting direction D2.

(Variation 8)
Unlike the embodiment, the tank body 20 may be provided separately from the bathtub.

Unlike the embodiment, the base 30 may be formed by the inner wall of the tank body 20, which is provided below the upper opening of the tank body 20, or may be formed by the wall body 16 of the sanitary equipment 12. In other words, the water discharge device 10 may be fixed to the inner wall of the bathtub 14 or the wall body 16.

Unlike the embodiment, the sanitary equipment 12 may be, for example, a kitchen equipment, a washbasin equipment, a toilet equipment, etc. In this case, the tank body 20 may be, for example, a kitchen sink, a hand washing sink, etc. In this case, the base 30 may be a flange portion of the kitchen sink or hand washing sink, or may be a wall that divides an interior space.

Unlike the embodiment, the jet water discharge section 50 and the shower flow water discharge section 52 may be housed in separate housings.

Unlike the embodiment, the water discharge system 18 does not have to include a valve device 24.

Unlike the embodiment, the water discharge device 10 may be configured as, for example, a shower device, a faucet device, etc.

(Variation 9)
The valve device 24 may be capable of connecting the first downstream water passage 22b and the upstream water passage 22a, and blocking the connection between the second downstream water passage 22c and the upstream water passage 22a. In this case, the water discharge device 10 discharges only the jet flow F1. The valve device 24 may be capable of connecting the second downstream water passage 22c and the upstream water passage 22a, and blocking the connection between the first downstream water passage 22b and the upstream water passage 22a. In this case, the water discharge device 10 discharges only the shower flow F2.

In other words, the water discharge device 10 may be capable of executing three water discharge modes: a mode in which only the jet flow F1 is discharged, a mode in which only the shower flow F2 is discharged, and a mode in which the jet flow F1 and the shower flow F2 are discharged simultaneously.

The present disclosure has been described using specific terms based on the embodiments. The embodiments merely show one aspect of the principles and applications of the present disclosure, and many modifications and changes in arrangement are permitted to the embodiments as long as they do not deviate from the ideas of the present disclosure as defined in the claims.

F1 jet, F2 shower flow, 10 water outlet device, 34 jet water channel, 36 shower water channel.

Claims (9)

a jet water discharge unit that discharges a jet of water into the tank body ;
a shower flow discharge section that discharges a shower flow passing above the jet into the tank body ,
All of the water outlet holes of the shower flow water outlet portion are located above the water outlet holes of the jet water outlet portion ,
A water discharge device in which the water discharge hole of the jet water discharge portion is provided at a position higher than the upper surface of the tank body . The water discharge device according to claim 1, wherein the water discharge range of the jet falls within the water discharge range of the shower flow when viewed from the front. The water discharge device according to claim 1 or 2, wherein the water jet discharge section discharges the water jet such that at least one of the flow direction and the flow rate when the water jets out of the water discharge hole of the water jet discharge section changes over time. The water discharge device according to any one of claims 1 to 3, wherein the water discharge direction of the jet water discharge section is downward relative to the water discharge direction of the shower flow water discharge section. The water discharge device according to any one of claims 1 to 4, wherein, in a plan view, the shower flow discharge section has a plurality of shower discharge holes arranged continuously in a horizontal direction perpendicular to the water discharge direction. A tank body;
The water discharge device according to any one of claims 1 to 5, which discharges water into the tank body;
A water discharge system comprising: The water discharge system according to claim 6, wherein the water discharge device takes in water within the tank body and discharges it into the tank body. A tank body;
A water discharge device fixed to the tank body,
The water discharge device is
A jet water discharge unit that discharges a jet of water into the tank body;
a shower flow discharge unit that discharges a shower flow passing above the jet into the tank body;
Including,
A water discharge system in which the water discharge hole of the jet water discharge section is provided at a position higher than the upper surface of the tank body . A tank body;
A water discharge device that takes in water inside the tank body and discharges it into the tank body,
The water discharge device is
A jet water discharge unit that discharges a jet of water into the tank body;
a shower flow discharge unit that discharges a shower flow passing above the jet into the tank body;
Including,
A water discharge system in which the water discharge hole of the jet water discharge section is provided at a position higher than the upper surface of the tank body .

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