JP2022045779A - Discharge device - Google Patents

Abstract

To provide a discharge device capable of generating a wavy jet flow stably and easily.SOLUTION: A discharge device 10 includes a device body 28 fixed to a bathtub, and forming a jet passage 32a capable of jetting a wavy jet flow, and an inflow passage 34 provided on the device body 28, for supplying liquid to the jet passage 32a from a direction orthogonal to a vibration direction of the wavy jet flow.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a discharge device that injects a jet stream.

A discharge device that injects a jet may be incorporated into sanitary equipment such as bathroom equipment. In recent years, attempts have been made to diversify the stimuli that jets give to users. As an example of this, Patent Document 1 describes a discharge device in which an injection flow path for injecting a wavy jet is formed in an apparatus main body.

Japanese Unexamined Patent Publication No. 4-176461

As a result of proceeding with the study, the inventor of the present application has obtained the following new recognition. In a discharge device configured to supply liquid to the injection flow path through a pipe extending in a direction parallel to the vibration direction of the wavy jet, the symmetry of the flow in the vibration direction is greatly disrupted in the injection flow path. , The discharge of the wavy jet may become unstable. The disclosed technology of Patent Document 1 was not devised from this point of view, and there was room for improvement.

One of the objects of the present disclosure is to provide a discharge device that facilitates stable generation of a wavy jet.

The discharge device of the present disclosure includes a device main body fixed to a bathtub and formed an injection flow path capable of injecting a wavy jet, and the jet flow provided in the device main body from a direction orthogonal to the vibration direction of the wavy jet. A discharge device including an inflow channel for supplying liquid to the path.

It is a schematic block diagram which looked at the discharge system of 1st Embodiment from the side. It is a schematic front view which shows the discharge device of 1st Embodiment together with the peripheral structure. It is a side sectional view of the discharge device of 1st Embodiment. It is a perspective view of the discharge device of 1st Embodiment. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is a figure which shows the state which is injecting a motion jet. FIG. 3 is a cross-sectional view taken along the line BB of FIG. It is a figure which shows the 1st flow state. It is a figure which shows the 2nd flow state. It is a side sectional view of the discharge device of 2nd Embodiment. FIG. 3 is a sectional perspective view of the discharge device of the third embodiment. It is sectional drawing of the direction parallel to the flow path center line of the jet flow path in the discharge device of 3rd Embodiment. It is a schematic diagram of the flow state in the vicinity of the downstream end outlet of the discharge device of the reference embodiment. It is a schematic diagram of the flow state in the vicinity of the downstream end outlet of the discharge device of the third embodiment.

Hereinafter, an example of the embodiment will be described. The same components are designated by the same reference numerals, and duplicate description will be omitted. In each drawing, for convenience of explanation, some of the components are omitted, enlarged, or reduced as appropriate. The drawings shall be viewed according to the orientation of the reference numerals.

(First Embodiment) Refer to FIGS. 1 and 2. The discharge device 10 is used for the bathroom equipment 14. The bathroom equipment 14 of the present embodiment includes a bathtub 16 and a bathroom wall portion 17 for partitioning the bathroom space. In addition to this, the bathroom facility 14 is provided with a washroom floor and the like. The discharge device 10 is fixed to the bathtub 16. The bathtub 16 is an example of a tank body capable of receiving the jet flow J and the membranous flow Fd discharged from the discharge device 10.

The discharge device 10 is used in the discharge system 18. The discharge system 18 includes a storage tank 20 for storing the liquid W to be injected, a liquid supply passage 22 for supplying the liquid W from the storage tank 20 to the discharge device 10, and a pump 24 provided in the middle of the liquid supply passage 22. A control unit 26 for controlling the pump 24 is provided. The storage tank 20 of the present embodiment is a bathtub 16 that stores bathtub water as the liquid W to be sprayed. Under the control of the control unit 26, the pump 24 supplies the liquid W to the jet flow path 32a and the discharge flow path 32b of the discharge device 10 through the liquid supply passage 22 by pumping the liquid W sucked from the storage tank 20. do. The control unit 26 is a computer that combines hardware such as a CPU, ROM, and RAM with software.

The discharge device 10 of the present embodiment injects the moving jet J from the injection flow path 32a and discharges the membranous flow Fd from the discharge flow path 32b. The motion jet J and the membranous flow Fd can be applied to the body of the user 8, particularly the neck, shoulders, back and the like of the user 8 in a sitting position in the bathtub 16 from the back side. As a result, the massage effect can be given to the user 8.

The discharge device 10 includes a device main body 28 fixed to the bathtub 16. The device main body 28 is attached to a wall-shaped base 30 provided in the bathroom facility 14. The base 30 of the present embodiment is a flange portion 31 that constitutes a peripheral edge portion of the upper end opening of the bathtub 16.

The discharge device 10 includes an injection flow path 32a and a discharge flow path 32b, respectively, in which the liquid W is supplied from the liquid supply passage 22 in the device main body 28. The liquid W is supplied upward from the liquid supply passage 22 to the jet flow path 32a and the discharge flow path 32b of the present embodiment, respectively. An injection hole 38a is formed at the downstream end of the injection flow path 32a. A discharge hole 38b is formed at the downstream end of the discharge flow path 32b. In the present specification, the direction along the discharge direction of the discharge device 10 is referred to as the front-rear direction A (see FIG. 3), and the horizontal direction orthogonal to the front-rear direction A is referred to as the left-right direction B. Of both sides of the front-rear direction A, the jet direction of the jet flow path 32a is referred to as the front side, and the opposite side thereof is referred to as the rear side.

The injection hole 38a opens in the front surface of the apparatus main body 28. The discharge device 10 of the present embodiment includes a plurality of jet flow paths 32a (two in the example of FIG. 2). The injection holes 38a of the plurality of injection flow paths 32a are provided at positions spaced apart from each other in the left-right direction B in the front view. The discharge hole 38b of the discharge flow path 32b opens in the front surface portion of the apparatus main body 28. The discharge hole 38b has a slit shape extending in the left-right direction B. The "front view" here means viewing from the front side in the front-rear direction A, and is synonymous with viewing from the viewpoint of FIG. 2, for example.

The injection hole 38a is provided below the discharge hole 38b in the front view. The injection hole 38a of the present embodiment is provided at a position overlapping the discharge hole 38b in front view. The injection hole 38a of the present embodiment is provided at a position within the range in the left-right direction B where the discharge hole 38b is provided in the front view. The injection hole 38a is not provided at a position protruding outside this range.

The injection flow path 32a injects the liquid W supplied from the liquid supply passage 22 through the inflow flow path 34 as a motion jet J. The inflow flow path 34 provided in the apparatus main body 28 is connected to the jet flow path 32a from below. Each figure shows the injection range of the motion jet J. The injection flow path 32a can inject the moving jet J forward from the injection hole 38a. The kinetic jet J here refers to a jet in which the traveling direction when exiting from the jet flow path 32a changes periodically, that is, with time. The injection flow path 32a can inject the moving jet J from the injection hole 38a by changing the injection direction Da of the jet with time. The injection flow path 32a of the present embodiment radially injects a wavy jet as a moving jet J by vibrating the jet direction Da (see FIG. 6) in a plane. This "injection direction Da" is based on the time when a jet flow is emitted from the injection flow path 32a to the outside. The “wavy” refers to a shape that periodically undulates in a direction orthogonal to the locus center Ct (see FIG. 6) of the jet locus JT formed by the moving jet J as it moves away from the jet flow path 32a. This "wavy" includes not only a shape that satisfies the condition as a physically strict wave, but also a shape similar to the shape. The injection flow path 32a of the present embodiment injects a moving jet J in the air. The device main body 28 constitutes a fluid element that injects a moving jet J while still in a stationary state.

The discharge flow path 32b can discharge the liquid W supplied from the liquid supply passage 22 as a film-like flow Fd. Each figure shows the discharge range of the membranous flow Fd. The discharge flow path 32b can discharge the membranous flow Fd passing above the motion jet J forward from the discharge hole 38b.

The membranous flow Fd can limit the scattering range of the droplets of the motion jet J by blocking the flow of the droplets. In the present embodiment, droplets are generated by the collision between the wavy jet J and an object such as the user 8. In the present embodiment, the discharge flow path 32b discharges the membranous flow Fd so as to hit the neck of the user 8, and the injection flow path 32a injects the motion jet J so as to hit the shoulder of the user 8 below the neck of the user 8. do. As a result, it is possible to limit the scattering of the droplets of the motion jet J above the membrane-like flow Fd, and it is possible to prevent the scattering of the droplets on the face of the user 8 above the membrane-like flow Fd.

The membranous flow Fd has an endped film shape in a cross section orthogonal to the flow direction. The hatching in FIG. 2 shows a cross section of the membranous flow Fd orthogonal to the flow direction when exiting the discharge flow path 32b. The term "ended film" as used herein means a film formed at a position where both ends are separated from each other in a cross section orthogonal to the flow direction. It can be said that the membranous flow Fd is acyclic in this cross section. This condition may be satisfied at least in the cross section orthogonal to the flow direction when the discharge flow path 32b is ejected. The film-like flow Fd of the present embodiment has an endped film shape that draws a straight line in such a cross section, but may be a curved shape such as an arc shape, and the specific shape thereof is not particularly limited.

See FIGS. 3-7. The injection flow path 32a includes an induced flow path 36 that induces a moving jet J and an injection hole 38a that injects the moving jet J induced by the induced flow path to the outside. The direction of the center line along the flow path center line CL1 of the induced flow path 36 is called the X direction. The X direction of this embodiment coincides with the front-back direction A. The flow path center line CL1 is located on the center of gravity line connecting the geometric center of gravity of the induced flow path 36. The "center of gravity" refers to the center of gravity of the entire plurality of intermediate flow paths 42A and 42B in a portion divided into a plurality of intermediate flow paths 42A and 42B (described later) as in the induced flow path 36 of the present embodiment. .. It is assumed that the flow path center line CL1 extends linearly along the tangential direction of the center of gravity line passing through the downstream end 36a on the downstream side of the downstream end 36a of the induced flow path 36.

The Y direction and the Z direction, which are orthogonal to the flow path center line CL1 and orthogonal to each other, are called the width direction and the height direction, respectively. The Y direction of the present embodiment is also the vibration direction P of the wavy jet J. This vibration direction P refers to the direction in which the wave formed by the wavy jet J vibrates when the wavy jet J exits from the jet flow path 32a in a plane orthogonal to the flow path center line CL1. The Y direction of this embodiment coincides with the left-right direction B.

The induced flow path 36 of the present embodiment has a rectangular shape in which the height dimension Lz along the Z direction is smaller than the inner width dimension Ly along the Y direction in the cross section orthogonal to the X direction. The induced flow path 36 has a cross-sectional shape symmetrical to the Z direction with respect to the flow path center line CL1 when viewed from the X direction (viewed from the viewpoint of FIG. 7). The induced flow path 36 has a cross-sectional shape symmetrical in the Y direction with the flow path center line CL1 of the induced flow path 36 as the axis of symmetry when viewed from the Z direction (viewed from the viewpoint of FIG. 5). In this embodiment, this condition also satisfies the injection hole 38a.

The induced flow path 36 includes a storage chamber 40 in which a liquid flows from the liquid supply passage 22 through an inflow flow path 34, a pair of intermediate flow paths 42A and 42B in which the liquid flows in from the storage chamber 40, and a pair of intermediate flow paths. It is provided with a merging chamber 44 into which the liquids flowing in from each of 42A and 42B merge. The storage chamber 40 is connected to the inflow flow path 34 from a direction orthogonal to the vibration direction P of the wavy jet J (below the storage chamber 40 in this embodiment). The liquid W flows into the storage chamber 40 from the downstream end outlet 35c of the inflow flow path 34. The cross-sectional area of the cross section of the storage chamber 40 in the direction orthogonal to the central axis CL2 of the first flow path portion 35a (the area of the storage chamber 40 as seen from the viewpoint of FIG. 5) is downstream of the inflow flow path 34 in the orthogonal direction. It is larger than the cross-sectional area of the cross section of the end exit 35c (the area of the downstream end exit 35c as seen from the viewpoint of FIG. 5).

The inflow flow path 34 of the present embodiment is positioned in a direction orthogonal to the vibration direction P of the wavy jet J (lower in the present embodiment) with respect to the injection flow path 32a, and the liquid W is introduced from below the injection flow path 32a. Supply. The inflow flow path 34 includes a first flow path portion 35a provided at the downstream end portion of the inflow flow path 34, and a second flow path portion 35b continuous to the upstream side with respect to the first flow path portion 35a. The second flow path portion 35b is located on the downstream side (front side) of the jet flow path 32a with respect to the first flow path portion 35a. It can be said that the central axis CL2 of the first flow path portion 35a is located on the downstream side (front side) of the jet flow path 32a with respect to the central axis CL3 of the second flow path portion 35b. The downstream end outlet 35c of the inflow flow path 34 is connected to the storage chamber 40.

In the induced flow path 36, a first wall portion 46 that blocks the flow of liquid toward the downstream side in the storage chamber 40 is provided. The pair of intermediate flow paths 42A and 42B are provided on both sides in the Y direction with respect to the first wall portion 46. The pair of intermediate flow paths 42A and 42B includes a left intermediate flow path 42A (first intermediate flow path) provided on one side in the Y direction and a right intermediate flow path 42B (second intermediate flow path) provided on the opposite side. including. The induced flow path 36 is provided with a second wall portion 48 that blocks the flow of the liquid toward the downstream side in the merging chamber 44. The second wall portion 48 separates the internal space of the induced flow path 36 from the external space of the apparatus main body 28, and the injection hole 38a penetrates the second wall portion 48 in the X direction.

The injection hole 38a is formed at the downstream end of the jet flow path 32a. The injection hole 38a opens in the outer surface portion of the apparatus main body 28. The injection hole 38a of the present embodiment is opened in the front surface portion of the apparatus main body 28, and the apparatus main body 28 injects the motion jet J forward. The injection hole 38a has a shape that throttles the flow of the liquid in the induced flow path 36. In order to realize this, the inner width dimension of the injection hole 38a of the present embodiment is set to be smaller than the inner width dimension of the induced flow path 36 on the way to the upstream side of the jet flow path 32a. The injection holes 38a are formed so as to continuously expand in a direction orthogonal to the X direction (Y direction in the present embodiment) toward the front side.

The operation of the jet flow path 32a of the present embodiment will be described. 8 and 9 are referenced. In this figure, the main liquid flow directions are indicated by arrows.

The liquid that has flowed into the storage chamber 40 via the inflow flow path 34 provided below the storage chamber 40 flows into the confluence chamber 44 via the pair of intermediate flow paths 42A and 42B. The pair of intermediate flow paths 42A and 42B are arranged symmetrically with respect to the flow path center line CL1 in the storage chamber 40. Therefore, when the influence of fluctuation described later is not taken into consideration, a water flow having a symmetry with respect to the flow path center line CL1 basically flows into the pair of intermediate flow paths 42A and 42B. The left intermediate flow path 42A injects the left internal jet F1 (first internal jet) into the confluence chamber 44. The right intermediate flow path 42B injects the right internal jet F2 (second internal jet) into the confluence chamber 44. These jets F1 and F2 are affected by fluctuations caused by the randomness of the liquid, and one of them becomes a dominant flow having a stronger force than the other (hereinafter referred to as a dominant flow). FIG. 8 shows a first flow state in which the left internal jet F1 is the dominant flow. FIG. 9 shows a second flow state in which the right internal jet F2 is the dominant flow.

As shown in FIG. 8, when in the first flow state, the right internal jet F2 is obstructed by the collision with the left internal jet F1. On the other hand, the left internal jet F1 flows with momentum until it collides with the second wall portion 48. The left internal jet F1 turns back in the merging chamber 44 and merges with the right internal jet F2 to amplify the momentum of the right internal jet F2. As a result, the right internal jet F2 switches to the second flow state in which the dominant flow becomes the dominant flow.

As shown in FIG. 9, when in the second flow state, the left internal jet F1 is obstructed by the collision with the right internal jet F2. On the other hand, the right internal jet F2 flows with momentum until it collides with the second wall portion 48. The right internal jet F2 folds back in the merging chamber 44 and merges with the left internal jet F1 to amplify the momentum of the left internal jet F1. As a result, the left internal jet F1 switches to the first flow state in which the dominant flow becomes the dominant flow.

As a result of the above, the first flow state and the second flow state are periodically switched. When in the first flow state, the left internal jet F1 forms a liquid flow F3 that passes through the jet holes 38a. This liquid flow F3 has a velocity vector toward one side (right side in the figure) and the front side in the Y direction. When in the second flow state, the right internal jet F2 forms a liquid flow F4 that passes through the jet holes 38a. This liquid flow F4 has a velocity vector toward the other side (left side in the figure) and the front side in the Y direction. By periodically switching these flow states, the magnitude (vector quantity) of the velocity vector in the Y direction of the liquid flows F3 and F4 passing through the injection hole 38a periodically increases or decreases. As a result, the jet direction Da of the jet J vibrates in the plane, so that the above-mentioned wavy jet J is jetted.

In injecting the wavy jet J (moving jet J) in this way, the induced flow path 36 internally generates an induced flow that induces the moving jet J. This "induced flow" is the internal jets F1 and F2 in this embodiment. The injection hole 38a injects the motion jet J thus induced by the induced flow path 36 to the outside.

(A) The effect of the above discharge device 10 will be described. If the inflow flow path 34 is connected to the injection flow path 32a from a direction parallel to the vibration direction P of the wavy jet J, and the liquid W is supplied to the injection flow path 32a from a direction parallel to the vibration direction P of the wavy jet J. think of. As an example, it is assumed that the inflow flow path 34 is connected to the jet flow path 32a from the intermediate flow path 42A side, and the liquid W is supplied from the intermediate flow path 42A side in the Y direction. Most of the liquid W flowing in from the Y direction travels straight in the Y direction, collides with the wall portion on the intermediate flow path 42B side of the storage chamber 40, and changes its direction toward the intermediate flow path 42B. Therefore, the relatively strong flow of the liquid W that has flowed through the storage chamber 40 flows into the intermediate flow path 42B. On the other hand, the flow of the liquid W, which has a relatively weak force and deviates from the storage chamber 40 without going straight in the Y direction, flows into the intermediate flow path 42A. Therefore, the symmetry of the flow in the vibration direction P in the induced flow path 36 is greatly broken. As a result, the jet of the wavy jet J may become unstable.

In this respect, the inflow flow path 34 of the present embodiment supplies the liquid W to the injection flow path 32a from a direction orthogonal to the vibration direction P of the wavy jet J (see FIG. 3). According to this embodiment, since it is suppressed that the symmetry of the flow in the vibration direction P is greatly disturbed in the induced flow path 36, it becomes easy to stably generate the wavy jet J.

(B) The discharge flow path of the present embodiment can discharge a membranous flow that passes above the jetted wavy jet. This membranous flow forms an endped film in a cross section orthogonal to the flow direction. According to this configuration, even in a situation where the droplets of the wavy jet J are likely to be scattered, the droplets of the wavy jet J can be blocked by the film-like flow Fd, and the scattering can be effectively prevented. In particular, since the flow direction of the wavy jet J changes with time, the jet range becomes wider than when the flow direction is constant with time. Even when the jet range is widened in this way, by making the membranous flow Fd into an endped film, it is possible to avoid merging with the membranous flow Fd and to widen the range in which the motion jet J can be directly exposed.

(C) Consider a case where a discharge device in which the inflow flow path 34 as described above is connected to the injection flow path 32a from a direction parallel to the vibration direction P of the wavy jet J is installed in the flange portion 31 of the bathtub 16. In this case, the piping of the inflow flow path 34 is arranged on the flange portion 31 of the bathtub 16. Therefore, the piping of the inflow flow path 34 may be exposed at the flange portion 31 and the design may be impaired. In this respect, the inflow flow path 34 of the present embodiment supplies the liquid W from below the jet flow path 32a. According to this configuration, even when the discharge device 10 is installed in the flange portion 31 of the bathtub 16, the piping of the inflow flow path 34 can be hidden behind the bathtub 16 without being exposed to the flange portion 31 of the bathtub 16. can. Therefore, it is possible to prevent the design from being impaired. In addition, when the pump 24 is stopped, a siphon effect is generated in which the liquid W in the piping of the inflow flow path 34 flows down. As a result, the residual water in the jet flow path 32a can be pulled back to the inflow flow path 34 side. As a result, it is possible to suppress the generation of water stains in the jet flow path 32a.

(D) Consider a case where the liquid W flows into the injection flow path 32a from a direction orthogonal to the vibration direction P of the wavy jet J without reducing the flow velocity. At this time, when the flow is disturbed in the process of flowing the liquid W in the inflow flow path 34, the wavy jet J becomes unstable when the liquid W in the disturbed state is supplied to the injection hole 38a. There is. On the other hand, the jet flow path 32a of the present embodiment includes a storage chamber 40 in which the liquid W flows in from the downstream end outlet 35c of the inflow flow path 34. According to this configuration, the liquid W can flow into the storage chamber 40 having a relatively large flow path cross-sectional area from the downstream end outlet 35c having a relatively small flow path cross-sectional area in the direction parallel to the flow path center line CL1. Therefore, it is possible to reduce the flow velocity of the liquid W flowing in from the downstream end outlet 35c of the inflow flow path 34 in the storage chamber 40. As a result, the flow of the liquid W can be rectified in the storage chamber 40, so that the wavy jet J can be stably injected.

(E) When the discharge device 10 is installed on the flange portion 31 of the bathtub 16, the inflow flow path 34 is connected to the pump 24 from the back side of the bathtub 16 with respect to the jet flow path 32a via the liquid supply passage 22. At this time, consider a case where the central axis CL2 of the first flow path portion 35a of the inflow flow path 34 and the central axis CL3 of the second flow path portion 35b are on the coaxial line. In this case, the inflow flow path 34 extends linearly downward from the upstream end of the jet flow path 32a through the portion of the flange portion 31 near the bathroom wall portion 17 on the back side of the bathtub 16. Therefore, the gap between the piping of the inflow flow path 34 and the bathroom wall portion 17 becomes smaller. As a result, it becomes difficult to tighten and fix the pipe of the inflow flow path 34 with a nut or the like, and the workability on the back side of the bathtub 16 may deteriorate. Considering that the inflow flow path 34 is installed in a unit bath or the like where the space behind the bathtub is limited, it is easier to install the inflow flow path 34 near the center of the flange portion 31 of the bathtub 16 in the left-right direction of the paper surface in FIG. It is preferable from the viewpoint of.

The inflow flow path 34 of the present embodiment has a first flow path portion 35a provided at the downstream end portion of the inflow flow path 34 and a second flow path portion 35b continuous on the upstream side with respect to the first flow path portion 35a. And prepare. The second flow path portion 35b is located on the downstream side of the jet flow path 32a with respect to the first flow path portion 35a. According to this configuration, the inflow flow path 34 is the space of FIG. 1 of the flange portion 31 of the bathtub 16 because the second flow path portion 35b is located on the downstream side of the jet flow path 32a with respect to the first flow path portion 35a. Move closer to the center in the left-right direction. Therefore, the gap between the piping of the second flow path portion 35b of the inflow flow path 34 and the bathroom wall portion 17 becomes large. As a result, it is possible to make it difficult to impair the workability on the back side of the bathtub 16.

(Second Embodiment) Hereinafter, the second embodiment of the present disclosure will be described. In the drawings and description of the second embodiment, the same or equivalent components and members as those of the first embodiment are designated by the same reference numerals. The description overlapping with the first embodiment will be omitted as appropriate, and the configuration different from the first embodiment will be mainly described. Similarly, the third embodiment described later will be omitted as appropriate.

See FIG. The present embodiment is different from the first embodiment in that the storage chamber 40 is connected to the inflow flow path 34 from above the storage chamber 40. As a result, the inflow flow path 34 of the present embodiment supplies the liquid W from above the jet flow path 32a. According to this configuration, when the pump 24 is stopped, a siphon effect is generated in which the liquid W in the piping of the inflow flow path 34 flows down. As a result, the residual water in the jet flow path 32a flows out from the jet hole 38a. As a result, it is possible to suppress the generation of water stains in the jet flow path 32a. In addition, also in this embodiment, the effects described in (A), (B), (D), and (E) described above can be obtained.

(Third Embodiment) Refer to FIGS. 11 and 12. The inflow flow path 34 of the present embodiment includes a dimensional change portion 35d. The dimension changing portion 35d is connected to the jet flow path 32a. The dimension of the vibration direction P of the wavy jet J in the dimension change portion 35d increases toward the downstream side. The dimension of the vibration direction P of the wavy jet J in the first flow path portion 35a of the present embodiment is larger than the dimension of the vibration direction P of the wavy jet J in the second flow path portion 35b. The dimension of the vibration direction P of the wavy jet J of the dimension change portion 35d is larger than the dimension of the dimension change portion 35d in the direction of the flow path center line CL1. The dimensional change portion 35d of the present embodiment is formed by the first flow path portion 35a and the second flow path portion 35b.

The effect of the discharge device 10 of this embodiment will be described. See FIG. 13. Suppose that the inflow flow path 34 does not have the dimension change portion 35d. In this case, the dimension D1 of the vibration direction P of the wavy jet J at the downstream end of the inflow flow path 34 does not change toward the downstream side (that is, the above dimensions are the same on the upstream side and the downstream side). The liquid flow W1 flowing from the inflow flow path 34 into the storage chamber 40 flows in the Z direction from below toward the upper surface of the storage chamber 40, collides with the upper surface of the storage chamber 40, and enters the left and right intermediate flow paths 42A and 42B. It flows toward. Due to this collision, there is a large difference in the flow velocity in the Y direction between the vicinity of the upper surface and the vicinity of the lower surface of the storage chamber 40. As a result, the generated vortex V flows through the intermediate flow paths 42A and 42B, destabilizing the injection of the wavy jet J.

See FIG. 14. In this respect, the inflow flow path 34 of the present embodiment has a dimensional change portion 35d. The dimension of the vibration direction P in the dimension change portion 35d increases toward the downstream side. In FIG. 14, the dimension D2 of the vibration direction P of the wavy jet J in the first flow path portion 35a is larger than the dimension D3 of the vibration direction P of the wavy jet J in the second flow path portion 35b. According to this configuration, when the liquid flow W2 flows into the storage chamber 40 through the dimension change portion 35d, the velocity vector component toward the vibration direction P in the liquid flow W2 gradually increases. As a result, since the liquid flow W2 collides with the upper surface of the storage chamber 40 while having a velocity vector component toward the vibration direction P, it is difficult to make a difference in the flow velocity in the Y direction between the vicinity of the upper surface and the vicinity of the lower surface of the storage chamber 40. Therefore, the generation of a vortex in the vicinity of the downstream end outlet 35c is suppressed, and the wavy jet J can be jetted more stably.

Other variants of each component will be described.

The bathroom facility 14 may be provided with at least a bathtub 16, and may not have a bathroom wall, a washroom floor, or the like.

The storage tank 20 is not limited to the bathtub 16. For example, the storage tank 20 may be provided separately from the bathtub 16. Water may be supplied to the liquid supply passage 22 from a water supply facility such as a water supply provided outside the building where the bathroom facility 14 is installed. In this case, the discharge system 18 does not need to include the pump 24 because the water in a state where the water supply pressure is applied is supplied to the liquid supply passage 22 from the water supply equipment.

Specific examples of the liquid W to be sprayed are not limited to bath water. The liquid W may be, for example, a liquid detergent or the like.

The mechanism for inducing the wavy jet J by the induced flow path 36 is not particularly limited. The induced flow path 36 may, for example, generate a Karman vortex as an induced flow to induce a wavy jet, or may induce a wavy jet by utilizing the Coanda effect.

The discharge device 10 discharges the wavy jet J and the membranous jet Fd. Not limited to this. The discharge device 10 may inject only the wavy jet J.

The discharge flow path 32b discharges the membranous flow Fd. Not limited to this. The discharge device 10 may discharge a shower flow or a mist flow.

The jet flow path 32a includes a storage chamber 40. Not limited to this. For example, a flow path may be used in which a jet flow flows from the downstream end outlet 35c to the intermediate flow paths 42A and 42B on both sides while keeping the flow path cross-sectional area in the direction parallel to the flow path center line CL1 equal. ..

The second flow path portion 35b was located on the downstream side of the jet flow path 32a with respect to the first flow path portion 35a. Not limited to this. For example, the inflow flow path 34 may be configured so that the central axis CL2 of the first flow path portion 35a of the inflow flow path 34 and the central axis CL3 of the second flow path portion 35b are on the coaxial line.

The dimensional change portion 35d is configured so that the dimension in the vibration direction P gradually increases from the second flow path portion 35b to the first flow path portion 35a. Not limited to this. The dimensional change portion 35d may be configured so that the dimension in the vibration direction P gradually increases from the second flow path portion 35b to the first flow path portion 35a. In this case, the flow path of the dimensional change portion 35d may be formed into a curved surface such that the dimension of the vibration direction P gradually increases from the second flow path portion 35b to the first flow path portion 35a.

The embodiments and modifications have been described above. Any combination of the above components is also effective as an aspect of the technical idea that abstracts the embodiments and modifications. For example, an arbitrary explanatory matter of another embodiment may be combined with an embodiment, or an arbitrary explanatory matter of an embodiment and another modified example may be combined with a modified example. The hatching attached to the cross section of the drawing does not limit the material of the object to which the hatching is attached.

10 ... Discharge device, 14 ... Bathroom equipment, 28 ... Device body, 32a ... Jet flow path, 34 ... Inflow flow path, 35a ... First flow path section, 35b ... Second flow path section, 35c ... Downstream end outlet, 35d ... Dimensional change part 36 ... Induced flow path, 38a ... Injection hole.

Claims (7)

The main body of the device, which is fixed to the bathtub and forms an injection flow path capable of injecting a wavy jet,
An inflow flow path provided in the main body of the apparatus and supplying a liquid to the injection flow path from a direction orthogonal to the vibration direction of the wavy jet flow.
Equipped with a discharge device. A discharge flow path capable of discharging a film-like flow passing above the jetted wavy jet is provided.
The discharge device according to claim 1, wherein the membranous flow has an endped film shape in a cross section orthogonal to the flow direction. The discharge device according to claim 1 or 2, wherein the inflow flow path receives the supply of the liquid from below the inflow flow path. The discharge device according to claim 1 or 2, wherein the inflow flow path receives the supply of the liquid from above the inflow flow path. The discharge device according to any one of claims 1 to 4, wherein the jet flow path includes a storage chamber into which a liquid flows in from a downstream end outlet of the inflow flow path. The inflow channel comprises a dimensional change portion connected to the jet channel.
The discharge device according to any one of claims 1 to 5, wherein the dimension in the vibration direction in the dimension change portion increases toward the downstream side. The inflow flow path includes a first flow path portion provided at the downstream end portion of the inflow flow path and a second flow path portion continuous on the upstream side with respect to the first flow path portion.
The discharge device according to any one of claims 1 to 6, wherein the second flow path portion is located on the downstream side of the jet flow path with respect to the first flow path portion.

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