JP2011173081A - Water discharge device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water discharge device capable of discharging water in a wide range by varying the water discharge directions, wherein startability and stability of the rotation and revolution of a water sprinkling member having multiple water discharge ports are made compatible. <P>SOLUTION: In the water discharge device FC, the water sprinkling member 40 has an upper enlarged part 501 disposed at an outer circumferential side from a first water storage chamber 422 and functioning as a second water storage chamber configured to receive and store water having passed through a space between a small diameter part 21 and a guide member 1 from a receiving port 501a, an intermediate part 502, and a lower enlarged part 503. The water feed speed to the upper enlarged part 501, intermediate part 502, and lower enlarged part 503 is set to be lower than the water feed speed to the first water storage chamber 422. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water discharger capable of discharging water over a wide range while changing the water discharge direction.

  Conventionally, as a water discharge device that can discharge water over a wide range while changing the direction of water discharge, the swirling flow formed in the inflow chamber in which the nozzle is incorporated allows the water to be discharged while the nozzle is swung or revolved and rotated. A water discharge device to perform is known (see, for example, Patent Document 1). Specifically, by introducing the cleaning water into the inflow chamber, the cleaning water that has flowed into the inflow chamber causes a swirling flow along the inner peripheral wall surface of the inflow chamber, and a force generated based on the swirling flow is exerted on the nozzle. Thus, the nozzle is swung and revolved around the swirling direction of the swirling flow with the nozzle inclined. The water discharge device described in the following Patent Document 1 can discharge water over a wide range without separately providing a device for driving a nozzle, and contributes to energy saving and cost reduction.

  A watering member having a plurality of water outlets is provided at the tip of the nozzle with the intention of allowing water to be discharged in a wider range than the water discharging device described in Patent Document 1 below, and the inside of the watering member from the tip side of the nozzle. A water discharging apparatus that supplies water to a storage chamber and discharges water from a plurality of water outlets has also been proposed (see, for example, Patent Document 2).

International Publication No. 02/055795 JP 2009-106930 A

  Both the water discharge device described in the above-mentioned Patent Document 1 and the water discharge device described in the above-mentioned Patent Document 2 cause the nozzle to swing and revolve or rotate by the swirl flow formed in the inflow chamber. Is. Note that the swinging revolution refers to the swing center that is the intersection of the center axis of the rotating body (for example, the nozzle) that swings and swings and the center axis of the swinging revolution (for example, the central axis of the inflow chamber). This is a rotational motion in which one end and the other end of a rotating body (for example, a nozzle) are located on the opposite side across the central axis when viewed from the direction of the central axis of swinging revolution.

  Since the water discharging apparatus described in the said patent document 2 is providing the water sprinkling member larger diameter than a nozzle in the front-end | tip of a nozzle compared with the water discharging apparatus described in the said patent document 1, a nozzle and There is a tendency that the mass of the rotating body constituted by the water sprinkling member increases and the moment of inertia also increases. Therefore, in the water discharging apparatus described in the said patent document 1, and the water discharging apparatus described in the said patent document 2, as long as the same rotation mechanism as mentioned above is employ | adopted, it describes in the said patent document 2. It is difficult for the water discharging apparatus provided with such a water sprinkling member to ensure sufficient rotational startability especially at the time of starting.

  On the other hand, in order to improve only the rotation startability, it is conceivable to reduce the moment of inertia around the central axis of swinging revolution and the moment of inertia around the central axis of rotation. However, if the moment of inertia around the center axis of swing and revolution and the moment of inertia around the center axis of rotation are reduced, it will act in the direction where the centrifugal force does not increase after the rotational motion such as swing and revolution starts. It can be a factor that hinders rotational stability.

  This invention is made | formed in view of such a subject, The objective is the water discharging apparatus which can discharge water in a wide range, changing the water discharging direction, Comprising: The water spraying member which has a some water discharging outlet An object of the present invention is to provide a water discharger capable of achieving both startability and stability of rotation and revolution.

  In order to solve the above problems, a water discharge device according to the present invention is a water discharge device capable of discharging water over a wide range while changing the water discharge direction, and an inflow chamber into which water flows is formed therein, A guide member having an opening communicating the inside of the inflow chamber and the outside of the inflow chamber; a small diameter portion having a smaller diameter than the opening; and a large diameter portion having a larger diameter than the opening; The tip protrudes from the opening to the outside of the guide member, while at least the large-diameter portion is accommodated in the inflow chamber so that water flowing into the inflow chamber can flow out from the tip of the small-diameter portion. A cylindrical body configured to be connected to the tip of the small-diameter portion so as to be located outside the guide member, and a plurality of water outlets are provided, and a first communicating with each of the plurality of water outlets A water reservoir is formed inside The cylindrical body is inclined with respect to the central axis of the inflow chamber in a state where at least a part of the small diameter portion is in contact with the opening due to the water flowing into the inflow chamber. However, it is configured to swing and revolve around the central axis of the inflow chamber and to rotate about the central axis of the inflow chamber, and at least a part of the water spray member is disposed on the outer peripheral side of the first water storage chamber. A second water storage chamber configured to receive water passing through a gap between the small diameter portion and the guide member from a receiving port and store the water, and a water supply speed to the second water storage chamber is It is comprised so that it may become smaller than the water supply speed to a water storage chamber.

  In the water discharge device of the present invention, since the sprinkling member is provided on the tip end side of the cylindrical body to constitute the rotating body, the mass tends to increase as compared with the configuration of the single cylindrical body. Requires great power. In addition, since the rotating body composed of the cylindrical body and the water sprinkling member rotates and revolves due to the water flowing into the inflow chamber, the force necessary to rotate and revolve may be insufficient when the amount of water flowing into the inflow chamber is small. . Therefore, in the present invention, the first water storage chamber is provided inside the water sprinkling member, while the second water storage chamber is provided outside, so that the water supply speed to the second water storage chamber is smaller than the water supply speed to the first water storage chamber. It is composed. The first water storage chamber provided on the inner side temporarily stores the water supplied from the inflow chamber and discharges it from a plurality of water outlets, and the second water storage chamber provided on the outer side includes a cylindrical body and The water that has passed through the gap with the guide member is received and stored.

  Therefore, in the start-up period, water accumulates first in the inner first water storage chamber, and water is discharged from a plurality of water outlets by increasing the water pressure in the first water storage chamber, so that water can be discharged from the plurality of water outlets without stagnation. Can do. Thus, while ensuring water discharge from a plurality of water outlets, since the first water storage chamber is arranged on the inner side, the moment of inertia of the water sprinkling member can be suppressed to be relatively small, and its rotation And the startability of revolution can be ensured satisfactorily.

  On the other hand, after the start period, water also accumulates in the outer second water storage chamber, so that the moment of inertia of the water spray member can be increased, and the stability of rotation and revolution can be ensured. Therefore, in the start-up period, the moment of inertia of the water sprinkling member is suppressed to ensure good startability of rotation and revolution, and after the sprinkling member starts rotating and revolving after the start-up period, The moment of inertia can be increased to ensure the stability of rotation and revolution.

  In the water discharge device according to the present invention, at least a part of the second water storage chamber is more than the first water storage chamber of the first water passage from the small diameter portion to the plurality of water discharge ports through the first water storage chamber. Also, it is preferable that they are arranged at positions corresponding to the downstream side.

  The present invention is configured to swing and revolve around the central axis of the inflow chamber while inclining with respect to the central axis of the inflow chamber while a part of the small diameter portion of the cylindrical body is in contact with the opening. Therefore, in this preferred embodiment, by arranging at least a part of the second water storage chamber at a position corresponding to the downstream side of the first water storage chamber of the first water passage, the revolution center of the rotating body composed of the cylindrical body and the water sprinkling member. And a part of the second reservoir. By constructing in this way and storing water in the second water storage chamber later than the water storage in the first water storage chamber, the moment of inertia of the watering member after the start-up period is further increased and the revolution stability of the watering member is good. Can be secured.

  In the water discharge device according to the present invention, the second water storage chamber has a lower cross-sectional area that is orthogonal to the central axis at a position corresponding to the downstream side of the first water storage chamber in the first water passage. It is also preferable to have an enlarged portion.

  In this preferable aspect, since it has the lower enlarged part which expanded the cross-sectional area of the 2nd water storage chamber in the position corresponded in the downstream rather than the 1st water storage chamber of a 1st waterway, the revolution center and 2nd In addition to separating the distance from a part of the water storage room, the water storage capacity is increased. By comprising in this way, the moment of inertia of the water sprinkling member after the start period can be increased further, and the revolution stability of the water sprinkling member can be ensured.

  In the water discharge device according to the present invention, at least a part of the second water storage chamber is more than the first water storage chamber of the first water passage from the small diameter portion to the plurality of water discharge ports through the first water storage chamber. Also, it is preferable that they are arranged at positions corresponding to the upstream side.

  The present invention is configured to swing and revolve around the central axis of the inflow chamber while inclining with respect to the central axis of the inflow chamber while a part of the small diameter portion of the cylindrical body is in contact with the opening. Therefore, in this preferred embodiment, by arranging at least a part of the second water storage chamber at a position corresponding to the upstream side of the first water storage chamber of the first water passage, the revolution center of the rotating body composed of the cylindrical body and the water sprinkling member. And a part of the second water storage chamber are close to each other. By constructing in this way and storing water in the second water storage chamber later than the water storage in the first water storage chamber, an increase in the moment of inertia of the water sprinkling member can be suppressed in the start-up period, and the revolution startability of the water sprinkling member can be reduced. It can be ensured satisfactorily.

  In the water discharge device according to the present invention, the second water storage chamber has an enlarged cross-sectional area orthogonal to the central axis at a position corresponding to the upstream side of the first water storage chamber in the first water passage. It is also preferable to have an enlarged portion.

  In this preferable aspect, since it has the upper enlarged part which expanded the cross-sectional area of the 2nd water storage chamber in the position equivalent to the upstream from the 1st water storage chamber of a 1st waterway, In addition to shortening the distance to a part of the water storage chamber, the water storage capacity is increased. By comprising in this way, the increase in the moment of inertia of a watering member can be suppressed more in a starting period, and the revolving startability of a watering member can be ensured favorable.

  In the water discharge device according to the present invention, the second water storage chamber has an enlarged cross-sectional area orthogonal to the central axis at a position corresponding to the upstream side of the first water storage chamber in the first water passage. While having an enlarged portion, the second reservoir has a lower enlarged portion in which a cross-sectional area perpendicular to the central axis is enlarged at a position corresponding to the downstream side of the first reservoir in the first water passage. It is also preferable that the second water storage chamber has an intermediate portion having a smaller cross-sectional area than the upper enlarged portion between the upper enlarged portion and the lower enlarged portion.

  In this preferable aspect, since it has the upper enlarged part which expanded the cross-sectional area of the 2nd water storage chamber in the position equivalent to the upstream from the 1st water storage chamber of a 1st waterway, In addition to shortening the distance to a part of the water storage chamber, the water storage capacity is increased. By comprising in this way, the increase in the moment of inertia of a watering member can be suppressed more in a starting period. In addition, at the position corresponding to the downstream side of the first water reservoir of the first water passage, it has a lower enlarged portion in which the cross-sectional area of the second water reservoir is enlarged, so that the center of revolution and the second water reservoir are In addition to separating the distance from some, it has increased its water storage capacity. By comprising in this way, the moment of inertia of the watering member after the start period is further increased. Therefore, the revolution startability and the revolution stability of the water sprinkling member can be reliably achieved.

  Further, in the water discharge device according to the present invention, a discharge port for discharging the water received from the receiving port and stored in the second water storage chamber is disposed on the opposite side of the receiving port across the second water storage chamber. It is also preferable that it is provided.

  In this preferable aspect, since the discharge port is provided on the opposite side to the receiving port across the second water storage chamber, the water taken from the receiving port is discharged from the discharge port through the second water storage chamber. Therefore, the entire second water storage chamber is filled with water, and the effect of increasing the moment of inertia of the water spray member by storing water in the second water storage chamber can be further enhanced. By comprising in this way, the moment of inertia of the water sprinkling member after the start period can be increased further, and the revolution stability of the water sprinkling member can be ensured.

  In the water discharge device according to the present invention, in the second water passage from the receiving port through the second water storage chamber to the discharge port, a constricted region with a narrowed cross-sectional area is formed on the downstream side. Is also preferable.

  In this preferred embodiment, since the constricted region is formed on the downstream side of the second water passage, water is likely to be accumulated in the second water storage chamber constituting the second water passage, and water is sprayed by storing water in the second water storage chamber. The effect of increasing the moment of inertia of the member can be further enhanced. By comprising in this way, the moment of inertia of the water sprinkling member after the start period can be increased further, and the revolution stability of the water sprinkling member can be ensured.

  Moreover, in the water discharging apparatus which concerns on this invention, the water discharged | emitted from the said discharge port of said 2nd water flow path merges with the water discharged from at least one part of these water discharge ports of said 1st water flow path. It is also preferable that it is configured.

  In the present invention, the water passing through the gap between the cylindrical body and the guide member is for smooth rotation and revolution of the water sprinkling member and the cylindrical body, unlike the original water discharge. Compared to the amount of water, it is configured to be small. Therefore, the water discharged from the outlet is scattered by the centrifugal force, and there is room for improvement from the viewpoint of the appearance of the discharged water. Therefore, in this preferred embodiment, since the water discharged from the discharge port is configured to merge with the water discharged from at least some of the plurality of water discharge ports, the water discharge is ensured while ensuring the revolution stability of the water sprinkling member. A good-looking water discharge device can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, it is a water discharging apparatus which can discharge water in a wide range, changing a water discharging direction, Comprising: The startability and stability of the rotation and revolution of a water sprinkling member which have a plurality of water outlets are made compatible. It is possible to provide a water discharge device capable of performing the above.

It is a schematic cross section of the water discharging apparatus which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is the expanded sectional view which expanded the water outlet vicinity of FIG. It corresponds to the BB cross section of FIG. 1, and is the schematic diagram which looked at the inflow chamber and the cylinder (large diameter part) accommodated in this inside from the plane direction. It is a schematic diagram for demonstrating the behavior of the shower flow discharged from the water discharging apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  FIG. 1: shows the schematic cross section of the water discharging apparatus which concerns on embodiment of this invention. As shown in FIG. 1, the water discharge device FC according to the present embodiment mainly includes a guide member 1 as a main body, and a cylindrical body 20 and a water sprinkling member 40 that justify a rotating body.

  The guide member 1 is constituted by a first main body 2 and a second main body 6 which are combined into a substantially spherical shape. A through hole is formed inside the hemispherical first main body 2, and a concave portion corresponding to the through hole is formed in the second main body 6. An inflow chamber 3 as a swirl chamber extending in the diameter direction is formed by a part of the through hole of the first main body 2 and the concave portion of the second main body 6.

  At one end in the axial direction of the inflow chamber 3, an opening 4 is provided that communicates with the inside and the outside of the inflow chamber 3. The inner diameter of the opening 4 is smaller than the inner diameter of the inflow chamber 3, and the center of the opening 4 is aligned with the central axis of the inflow chamber 3.

  An inflow hole 5 is formed outside the diameter of the inflow chamber 3 on the other end side in the axial direction. The inflow hole 5 communicates with the inside of the inflow chamber 3 and the outside of the guide member 1. The water guided from the outside of the guide member 1 to the inflow hole 5 flows from the tangential direction to the inflow chamber 3 through the inflow hole 5, and a swirling flow of water is formed inside the inflow chamber 3. The opening 4 is open to the outside of the guide member 1, and the opening on the other end side of the inflow chamber 3 is closed by the second main body 6.

  The cylindrical body 20 is formed in a substantially bottle shape having a small diameter portion 21 and a large diameter portion 22. The outer diameter of the large diameter portion 22 is smaller than the inner diameter of the inflow chamber 3, and the large diameter portion 22 is accommodated in the inflow chamber 3. The outer diameter size of the small diameter portion 21 provided integrally with the large diameter portion 22 is smaller than the inner diameter size of the opening portion 4, the small diameter portion 21 penetrates the opening portion 4, and the tip thereof is outside the first main body portion 2. Protruding.

  As shown in FIG. 1, in the state where the cylindrical body 20 and the inflow chamber 3 are aligned with each other in the center axis, a gap is formed between the outer peripheral surface of the small diameter portion 21 and the inner wall surface of the opening portion 4. A gap is also formed between the outer peripheral surface of the large-diameter portion 22 and the guide surface 3 a that is the inner wall surface of the inflow chamber 3. The cylindrical body 20 is not fixed to the guide member 1 and can freely rotate or swing and revolve with oscillation.

  Both ends of the cylindrical body 20 in the axial direction are opened, and the water flowing into the cylindrical body 20 from the opening 24 on the large diameter portion 22 side flows in the cylindrical body 20 in the axial direction, and from the opening 25 on the small diameter portion 21 side. It is configured to be able to flow out of the cylindrical body 20. In addition, a plurality of through holes 23 that are intermittently arranged at equal intervals in the circumferential direction are formed on the circumferential surface (side surface) of the large-diameter portion 22 of the cylindrical body 20, and the water that flows into the inflow chamber 3 Even through these through-holes 23, they are guided to the inside of the cylindrical body 20 so as to be able to flow out from the opening 25 at the tip of the small diameter portion 21.

  The water sprinkling member 40 is connected to the tip of the small diameter portion 21 of the cylindrical body 20 so as to be located outside the guide member 1. The water sprinkling member 40 is formed in a flat shape having a larger dimension in the radial direction than the cylindrical body 20, and the center in the radial direction is made to coincide with the central axis CL of the cylindrical body 20.

  The water sprinkling member 40 includes a case 41 and a first water passage part 42. The tip of the small diameter portion 21 of the cylindrical body 20 is fitted and fixed inside the narrow tube portion 42 c of the first water passage component 42. Thereby, the cylinder 20 and the water sprinkling member 40 become a rotating body integral with each other sharing the central axis CL, and can freely rotate or swing and revolve with oscillation.

  A first water storage chamber 421 is formed inside the first water passage component 42, and the opening 25 at the tip of the small diameter portion 21 of the cylindrical body 20 faces the first water storage chamber 421. The radial dimension of the first water storage chamber 421 is larger than the radial dimension of the cylindrical body 20, and the first water storage chamber 421 is configured such that water flowing out from the tip of the small diameter portion 21 can be temporarily stored.

  A plurality of water outlets 422 are formed on the downstream side of the first water storage part 421 in the first water passage part 42. The water discharge port 422 is connected to the nozzle 42a formed on the surface of the first water passage component 42 and penetrates from the tip of the nozzle 42a to the outside. Therefore, the water temporarily stored in the first water storage chamber 421 is configured to be discharged to the outside from the water outlet 422. By being configured in this way, in the first water passage component 42, a first water passage from the narrow tube portion 42c to the water outlet 422 via the first water storage chamber 421 is formed.

  The case 41 is provided so as to cover the first water passage part 42. The case 41 is disposed so that a predetermined space is formed between the case 41 and the first water passage part 42. Between the case 41 and the first waterway part 42, in order from the guide member 1 side, the receiving port 501a, the upper enlarged portion 501 (storage portion), the intermediate portion 502, the lower enlarged portion 503, and the outlet 503a is formed.

  The receiving port 501a is provided facing the opening 4 so as to be able to receive water leaking through the gap between the small diameter portion 21 of the cylindrical body 20 and the opening 4 of the guide member 1. The water received from the receiving port 501a is temporarily stored in the upper enlarged portion 501 that functions as a storage portion. The water leaking through the gap between the small diameter portion 21 and the opening 4 has a momentum toward the leaking direction. The water received by the upper enlarged portion 501 in such a state of momentum is configured so as to be scraped off by being stored by hitting the wall surface of the upper enlarged portion 501.

  The upper enlarged portion 501 is formed between the first water passage part 42 and the case 41 so as to surround the central axis CL. Therefore, the water received from the receiving port 501 a enters the upper enlarged portion 501 that functions as a storage portion, is guided to be dispersed toward the outer periphery of the water sprinkling member 40, and flows into the intermediate portion 502. The water that has flowed into the intermediate portion 502 flows into the lower enlarged portion 503 via the intermediate portion 502. The water that has flowed into the lower enlarged portion 503 flows out from the discharge port 503a toward the water discharge port 422.

  As described above, the water stored in the upper enlarged portion 501 via the receiving port 501a moves to the lower enlarged portion 503 via the intermediate portion 502, and flows out from the outlet 503a toward the water outlet 422. . Therefore, the flow path from the receiving port 501a through the upper enlarged portion 501 to the discharge port 503a through the intermediate portion 502 and the lower enlarged portion 503 functions as the second water passage 50.

  The water from the discharge port 503a toward the water discharge port 422 merges with the water discharged from the water discharge port 422, and is discharged from the water discharge opening 41a provided on the front end side of the case 41 toward the water discharge target. A folded portion 41 b is provided on the distal end side of the case 41 so as to surround the water discharge opening 41 a of the case 41. Since this folding | returning part 41b comprises a part of lower expansion part 503, the role which directs the water which goes to the discharge port 503a from the lower expansion part 503 not to turn to the outer peripheral direction of the water sprinkling member 40 by centrifugal force. Plays.

  The plurality of water discharge ports 422 are formed along the circumferential direction at least on the outer peripheral side portion of the first water passage component 42 of the water spray member 40. 2 is a cross-sectional view taken along line AA of FIG.

  As shown in FIG. 2, a guide protrusion 42 b is provided between each water outlet 422 so as to be positioned between one water outlet 422 and another water outlet 422. The guide protrusion 42b allows the water flowing out from the discharge port 503a from the intermediate portion 502 via the lower enlarged portion 503 to pass through the nozzle 42a and the discharge port so that the water does not penetrate between the nozzles 42a having the discharge port 422. It plays a role of directing and guiding the water port 422. The guide protrusion 42 b also functions as a part of the second water passage 50.

  As the second water passage 50, the outer peripheral surface of the nozzle 42a also functions as a part thereof. FIG. 3 shows an enlarged cross-sectional view in which the vicinity of the nozzle 42a is enlarged. As shown in FIG. 3, the nozzle 42 a has a tip outer peripheral surface 42 aa that surrounds the water outlet 422. The tip outer peripheral surface 42aa is inclined so as to rise along the water discharge direction from the outside toward the inside with respect to the water discharge port 422. Accordingly, the water toward the discharge port 503a hits the outer peripheral surface 42aa and flows along the outer peripheral surface 42aa. Thus, the water guided by the outer peripheral surface 42aa at the tip joins the water discharged from the water discharge port 422 and is discharged from the water discharge opening 41a to the outside.

  The cylindrical body 20 and the water sprinkling member 40 are integrally formed by combining. The small diameter portion 21 and the large diameter portion 22 of the cylindrical body 20 are integrally formed. The cylindrical body 20 and the water spray member 40 are formed as separate members, and are assembled and integrated. The small-diameter portion 21 and the large-diameter portion 22 of the cylindrical body 20 are formed as separate members and may be assembled and integrated. The center of gravity of the rotating body composed of the cylindrical body 20 and the water sprinkling member 40 is preferably set to a position that is disposed outside the inflow chamber 3 when the rotating body is placed in the inflow chamber 3.

  At that time, the water sprinkling member 40 is formed to have a larger diameter than the cylindrical body 20, and by increasing the water sprinkling member 40 in the radial direction, the mass of the water sprinkling member 40 is made larger than the mass of the cylindrical body 20 and flows into the center of gravity position. It is also preferable to arrange it outside the chamber 3. On the other hand, it is also preferable to form the water sprinkling member 40 from a material having a low specific gravity such as resin, and to form the cylindrical body 20 from a material having a high specific gravity such as metal. By using the water sprinkling member 40 and the cylindrical body 20 as separate members in this way, it is possible to easily change the material and thickness of each, and the center of gravity is easily set near the opening 4 as a rotating body. can do.

  It is also preferable that the large diameter portion 22 is lighter than the small diameter portion 21 and the center of gravity is disposed outside the inflow chamber. In this case, the material forming the large diameter portion 22 may be a material having a lower density than the material forming the small diameter portion 21. For example, it is preferable to use a resin for the large diameter portion 22 and a metal for the small diameter portion 21. When formed integrally, the water passage of the large diameter portion 22 of the cylindrical body 20 is made larger than the cross-sectional area of the water passage of the small diameter portion 21 and the thickness of the large diameter portion 22 is reduced, so that the large diameter portion The mass of 22 may be lighter than the mass of the small diameter portion 21 and the center of gravity may be disposed outside the inflow chamber.

  In the water discharge device FC according to the present embodiment configured as described above, the rotating body including the cylindrical body 20 and the water sprinkling member 40 can swing and revolve while tilting with respect to the central axis of the inflow chamber 3. It is configured. Next, the manner in which the rotating body including the cylindrical body 20 and the water sprinkling member 40 rotates and rotates will be described with reference to FIG. FIG. 4 corresponds to the BB cross section of FIG. 1 and is a schematic view of the inflow chamber 3 and the cylindrical body 20 (large-diameter portion 22) accommodated therein viewed from the plane direction.

  Water introduced from a pipe or the like (not shown) flows into the inside of the inflow chamber 3 having a substantially circular cross section from the tangential direction through the inflow hole 5 formed in the guide member 1. A flow of cleaning water swirling around the central axis C2 of the chamber 3 (which is an axis set at the same position as the water spray member 40 and the central axis CL of the cylindrical body 20 in FIG. 1) is formed inside the inflow chamber 3. The

  The cylindrical body 20 (large-diameter portion 22) accommodated in the inflow chamber 3 is inclined with respect to the central axis C2 of the inflow chamber 3 by receiving the swirling force, for example, with an arrow A in FIG. It swings and revolves around the central axis C2 of the inflow chamber 3 in the direction shown. A part of the small diameter portion 21 of the cylindrical body 20 is in contact with the opening 4, and a part of the side surface (circumferential surface) of the large diameter portion 22 is in contact with the guide surface 3 a of the inflow chamber 3. Further inclination of the cylindrical body 20 with respect to the central axis C2 of the inflow chamber 3 is restricted.

  In the present specification, the revolving around the central axis C2 while the cylindrical body 20 is inclined with respect to the central axis C2 of the inflow chamber 3 is referred to as “swing swing revolution”. That is, when the cylinder 20 swings and revolves around the central axis C2 while tilting with respect to the central axis C2 of the inflow chamber 3, the cylindrical body 20 is centered around the portion where the small diameter portion 21 contacts the opening 4. It swings so that the tip of the small diameter portion 21 swings its head. As described above, the swing revolution means that the center axis CL of the rotating body that swings and revolves (in the case of the present embodiment, the cylindrical body 20 and the water sprinkling member 40) and the inflow chamber 3 that is the center axis of the swing revolution. One end of a rotating body composed of a cylindrical body 20 and a water sprinkling member 40 when viewed from the direction of the central axis C2 of swinging revolution, which is a rotational motion that pivots about the swing center that is the intersection with the central axis C2. (Center of the case 41) and the other end (center of the large diameter portion 22) are rotational motions located on the opposite side across the central axis C2.

  When the cylindrical body 20 swings and revolves, a part of the outer peripheral surface of the small diameter portion 21 contacts the inner wall surface of the opening 4 and a part of the side surface (peripheral surface) of the large diameter portion 22 flows into the inflow chamber 3. Therefore, the dynamic friction force generated at the contact portion acts on the cylindrical body 20. Due to this dynamic frictional force, the cylinder 20 does not slide and move in the inflow chamber 3 in the state where it is in contact with the opening 4 and the guide surface 3a without changing the contact portion. And swing around the guide surface 3a. The fact that the cylindrical body 20 rolls on the inner wall surface of the opening 4 and the guide surface 3a means that the cylindrical body 20 rotates around its own central axis CL.

  That is, the cylindrical body 20 swings and revolves around the central axis C <b> 2 of the inflow chamber 3 while rotating about the central axis CL thereof. The revolution direction (the direction of arrow A in FIG. 4) of the cylinder 20 around the central axis C2 of the inflow chamber 3 is the same direction as the swirl direction of the swirl flow formed in the inflow chamber 3, and the cylinder 20 itself The direction of rotation around the central axis CL (the direction of arrow B in FIG. 4) is opposite to the direction of revolution A. Regarding this rotation, the dynamic friction coefficient of the contact surface, the material and shape of the large-diameter portion 22 of the cylindrical body 20, the inflow speed from the inflow hole 5, the gap between the inflow chamber 3 and the large-diameter portion 22, etc. The rotation direction and the number of rotations can be controlled.

  Next, the movement (trajectory) of the shower flow of the water discharger FC according to this embodiment will be described with reference to FIG. FIG. 5 is a schematic diagram for explaining the behavior of the shower flow discharged from the water discharge device shown in FIG. 1. In FIG. 5, the water discharging device shows only the cylindrical body 20 and the water sprinkling member 40 which are movable parts, and the guide member 1 in which the inflow chamber 3 is formed is not shown.

  A part of the washing water that has flowed into the inflow chamber 3 flows into the inside of the cylinder 20 from the opening 24 at the end of the cylinder 20 on the side of the large diameter portion 22 and the through-hole 23 formed on the side surface. 20 flows in the axial direction toward the tip of the small diameter portion 21. And the water which flowed out from the opening 25 of the small diameter part 21 flows in into the 1st water storage chamber 421 inside the water sprinkling member 40. When the water in the inflow chamber 3 flows into the cylindrical body 20 and flows through the cylindrical body 20, it still has a swirl component. In addition, the flow velocity increases when flowing through a relatively narrow flow path called the small diameter portion 21.

  Since the first water storage chamber 421 is a flat space having a larger radial dimension than the inflow chamber 3 and the cylindrical body 20, the momentum of water flowing from the opening 25 of the small diameter portion 21 can be reduced. That is, only by temporarily storing water in the first water storage chamber 421 without adding a special mechanism or parts, the flow rate of water can be greatly reduced, and the swirl component can be lost. The water rectified in the first water storage chamber 421 in this manner is discharged to the outside in a shower form from a plurality of water discharge ports 422 communicating with the first water storage chamber 421.

  As described above, the tubular body 20 and the water sprinkling member 40 move in combination with swinging revolution and rotation. Therefore, the shower-like shower water discharge trajectory (for example, a human body or the like) obtained by the water discharge device FC according to the present embodiment. The movement trajectory on the surface of the human body of the shower flow collision part) is a combination of the trajectory due to rotation and the trajectory due to swing swing.

  The cylindrical body 20 and the water sprinkling member 40 rotate together with each other around their own central axis CL, and move in the same b direction as the rotation direction in a circular locus as shown by a solid line in FIG. A shower flow is formed.

  The water that has flowed into the inflow chamber 3 not only rotates to rotate and swing the cylinder 20, but also the water itself passes through the cylinder 20 and the water sprinkling member 40 and is discharged from the water outlet 422. It becomes a shower style. Here, if the washing water reaches the water outlet 422 with a swirl component, the water is dispersed and discharged in directions other than the direction of the water outlet 422, and a sense of unity in which the in-plane distribution is uneven is felt. Not prone to shower style.

  Therefore, in the present embodiment, the first water storage chamber 421 is provided between the cylindrical body 20 and the water discharge port 422, and water is temporarily stored in the first water storage chamber 421, so that the water flow rate is greatly reduced. And the swirl component can be lost. Since the water passing through the water outlet 422 loses the swirl component, the water can be reliably discharged in the direction of the water outlet 422, the shower flow is prevented from being dispersed, the in-plane distribution is uniform, and the shower flow has a sense of unity. Is obtained.

  For example, if the water discharge port 422 is formed in the vicinity of the center of the first water passage part 42, the washing water flowing out from the opening 25 of the cylindrical body 20 does not receive a sufficient rectifying action in the first water storage chamber 421. There is a concern that the swirl component may flow into the water outlet 422. Therefore, it is desirable to form the water outlet 422 as much as possible in the outer peripheral side portion of the first water passage part 42. Moreover, when the water discharge port 422 is formed in the outer peripheral side portion of the first water passage part 42, the shower flow can be discharged in a wider range by the centrifugal force generated by the above-described rotation and swing revolution.

  Further, in the present embodiment, a shower flow that moves in a relatively narrow range as shown by a dotted line in FIG. 5 is formed by swinging and revolving around the central axis C2 of the inflow chamber 3 of the cylindrical body 20 and the water sprinkling member 40. Is done. As a whole, the shower flow moves in a relatively narrow range at a high speed in the direction of arrow a in FIG. 5 and slowly moves in a range larger than the moving range in the direction b opposite to the direction a.

  The shower flow formed by swinging and revolving can cover the inner area that cannot be covered by the shower flow formed by rotation alone. Shaped shower flow can be obtained. Thus, according to the present embodiment, a shower-like shower flow that covers a wider area in a planar shape without being hollow out can be realized. A plurality of such water discharge devices according to the present embodiment, for example, attached to the wall of a bathroom or a shower booth, and taking a shower flow from each of the water discharge devices, the entire body in a freehand state without unevenness at once It can be warmed, and a sufficient bathing feeling can be obtained only by the shower flow and the water discharge flow. Unlike bathing in a bathtub, such a shower bath is safe for small children and the elderly, especially without feeling the pressure of water pressure on the body (burden on the cardiopulmonary) or drowning.

  The water discharge device FC according to the present embodiment has a configuration as described above, and a plurality of water flowing out from the gap between the rotating body having the water sprinkling member 40 having the plurality of water discharge ports 422 and the guide member 1 having the inflow chamber 3 is discharged. It is possible to function as a water discharge device that can reliably merge with water discharged from at least one of the water discharge ports 422. On the other hand, it can also be regarded as useful from the viewpoint of improving the startability and stability of rotation and revolution of the rotating body composed of the water sprinkling member 40 and the cylindrical body 20.

  From the viewpoint of effectively using water flowing out from the gap between the cylinder 20 and the opening 4, the second water passage 50 is passed through the gap between the small diameter portion 21 of the cylinder 20 and the opening 4 of the guide member 1. It can be understood that the water is provided as a water passage for receiving water and joining the received water to the water discharged from the plurality of water discharge ports 422. The second water passage 50 as the water passage guides the received water in the direction opposite to the direction in which the centrifugal force acts by the rotation or revolution of the water sprinkling member 40, that is, the direction toward the outer periphery of the water sprinkling member 40. Thus, the folded portion 41b is provided so as to merge with water discharged from at least a part of the plurality of water discharge ports 422.

  The water discharge apparatus FC of this embodiment is the 1st water storage chamber as a water storage chamber formed in the water sprinkling member 40 connected with the cylinder 20 with the water supplied from the inflow chamber 3 formed in the guide member 1 inside. The water is temporarily stored in 421, and the water temporarily stored in the first water storage chamber 421 is discharged from a plurality of water discharge ports 422 while rotating and revolving the water sprinkling member 40 and the cylindrical body 20. Therefore, since the water pressure in the water storage chamber 421 is increased and water is discharged from the plurality of water outlets 422, water can be discharged from the plurality of water outlets 422 without stagnation.

  On the other hand, the second water flow path 50 as a water flow path that receives the water that has passed through the gap between the small diameter portion 21 of the cylindrical body 20 and the opening 4 of the guide member 1 and merges the water discharged from the plurality of water discharge ports 422. Therefore, water that has passed through the gap between the small diameter portion 21 of the cylindrical body 20 and the opening 4 of the guide member 1 is discharged from the water discharge port 422 without being affected by the water pressure in the first water storage chamber 421. Can merge with water.

  In the case of this embodiment, the water passing through the gap between the cylindrical body 20 to which the water sprinkling member 40 is attached and the guide member 1 is lubricated when the water sprinkling member 40 and the cylindrical body 20 rotate or revolve with respect to the guide member 1. It is an agent, and is configured to reduce the amount of water. Therefore, the second water passage 50 is provided with a turn-back portion 41b, and is configured to guide water received in the direction opposite to the direction in which the centrifugal force acts by rotating or revolving the water sprinkling member 40, so that a small amount of water can be obtained. Even if it is a case where is supplied to the 2nd water flow path 50, it can be made to merge with the water discharged from the water discharge port 422 reliably against a centrifugal force. Therefore, without passing through the first water storage chamber 421 formed in the water sprinkling member 40, the water received from the gap between the cylindrical body 20 and the guide member 1 is surely merged with the water discharged from the water outlet 422. It is possible to reliably discharge water to the water discharge target without splashing wastefully.

  Moreover, in the water discharging apparatus FC which concerns on this embodiment, it has guide | induced so that the water received through the receiving port 501a may be disperse | distributed toward the outer periphery of the water sprinkling member 40 by providing the upper expansion part 501 in the 2nd water flow path 50. . In this way, since the received water is guided to be dispersed toward the outer periphery of the water sprinkling member 40, the centrifugal force acting compared to the case where the water is merged with the water discharged from the water outlet 422 without being dispersed is reduced. It is possible to reduce the scattering of water to the outside at the time of joining.

  Moreover, in the water discharging apparatus FC which concerns on this embodiment, by providing the upper expansion part 501 in the 2nd water flow path 50, it functions as a storage part for stopping the received water temporarily, and the upper expansion part 501 as a storage part After temporarily holding the received water, the water is dispersed and discharged toward the outer periphery of the water spray member 40. Thus, since the water received from the gap between the cylindrical body 20 and the guide member 1 is temporarily fastened to the upper enlarged portion 501 as a storage portion, the momentum of water when flowing from the guide member 1 side is reduced, The energy applied when flowing out while being dispersed toward the outer periphery of the water sprinkling member 40 can be reduced. Therefore, together with the effect of reducing centrifugal force by dispersing and flowing out, it is possible to more reliably reduce the scattering of water to the outside when joining the water discharged from the water outlet 422.

  Moreover, in the water discharging apparatus FC which concerns on this embodiment, the 2nd water flow path 50 is comprised so that the received water may be guide | induced so that the discharge direction of the water discharged from at least one part of the some water outlet 422 may be followed. Yes. Specifically, the second water passage 50 is inclined so that the tip outer peripheral surface 42aa of the nozzle 42a surrounding the water discharge port 422 rises along the water discharge direction from the outside to the inside, and on the tip outer peripheral surface 42aa. It is configured such that the received water is guided along with the received water to join the water discharged from at least a part of the plurality of water discharge ports 422.

  In this way, the tip outer peripheral surface 42aa of the nozzle 42a where the water discharge port 422 is formed is inclined, and the received water is applied to the inclined front end outer peripheral surface 42aa, and the water discharged from the water discharge port 422 is joined. It is possible to more reliably reduce the scattering of water to the outside at the time of making it.

  Moreover, in the water discharging apparatus FC which concerns on this embodiment, the 2nd water flow path 50 has the guidance protrusion 42b as a guidance part which guides the received water so that it may go to at least one part of the some water outlet 422. FIG. The guide protrusion 42 b is provided so as to be positioned between one water outlet 422 and another water outlet 422.

  In this way, with a simple configuration of providing the guide protrusion 42b, it is possible to reduce the amount of water that is scattered without being able to merge with the water discharged from the water outlet 422, and when the received water is merged with the water discharged from the water outlet 422 Scattering of water to the outside of the can be more reliably reduced.

  Subsequently, from the viewpoint of improving the startability and stability of the rotation and revolution of the rotating body including the water sprinkling member 40 and the cylindrical body 20, the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion functioning as a second water storage chamber. At least a part of the portion 503 is disposed on the outer peripheral side of the first water storage chamber 421, and is configured to receive water stored in the gap between the small diameter portion 21 and the guide member 1 from the receiving port 501a and store water. It is what. In such a configuration, the water supply speed to the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 that function as the second water storage chamber is configured to be lower than the water supply speed to the first water storage chamber 421. Yes.

  Since the water discharging apparatus FC of this embodiment comprises the water sprinkling member 40 in the front end side of the cylinder 20, and comprises the rotary body, it exists in the tendency for mass to increase compared with the structure of the cylinder 20 single-piece | unit, and autorotation. And you need more power to revolve. In addition, the rotating body composed of the cylindrical body 20 and the water sprinkling member 40 rotates and revolves due to the water flowing into the inflow chamber 3, so that the force necessary to rotate and revolve is insufficient when the amount of water flowing into the inflow chamber 3 is small. There is also a case. Therefore, in the present embodiment, the first water storage chamber 421 is provided on the inner side of the water sprinkling member 40, while the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 that function as the second water storage chamber are provided on the outer side. The water supply speed to the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 functioning as a chamber is configured to be lower than the water supply speed to the first water storage chamber 421. The first water storage chamber 421 provided on the inner side temporarily stores the water supplied from the inflow chamber 3 and discharges it from the plurality of water discharge ports 422, and serves as a second water storage chamber provided on the outer side. The upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 receive and store water that has passed through the gap between the cylindrical body 20 and the guide member 1.

  Accordingly, in the start-up period, water is first accumulated in the inner first water storage chamber 421, and the water pressure in the first water storage chamber 421 is increased to discharge water from the plurality of water outlets 422. Therefore, from the plurality of water outlets 422, Water can be discharged without itching. Thus, while ensuring the water discharge from the some water discharge port 422, since the 1st water storage chamber 421 is arrange | positioned inside, it can suppress that the moment of inertia of the water sprinkling member 40 becomes comparatively small. The startability of the rotation and revolution can be ensured satisfactorily.

  On the other hand, after the start period, water also accumulates in the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 corresponding to the outer second water storage chamber, so that the moment of inertia of the water sprinkling member 40 can be increased. The stability of its rotation and revolution can be ensured. Accordingly, in the starting period, the moment of inertia of the water sprinkling member 40 is suppressed to ensure good startability of rotation and revolution, and after the sprinkling member 40 starts rotating and revolving after the starting period, watering is started. The moment of inertia of the member 40 can be increased to ensure the stability of rotation and revolution.

  In this embodiment, a part of the small diameter portion 21 of the cylindrical body 20 is swung around the central axis of the inflow chamber 3 while tilting with respect to the central axis of the inflow chamber 3 in a state where the small diameter portion 21 is in contact with the opening 4. It is configured. Therefore, in this preferred embodiment, the lower enlarged portion 503 that functions as at least a part of the second water storage chamber is disposed at a position corresponding to the downstream side of the first water storage chamber 421 in the first water passage, so that the cylindrical body 20 and The distance between the revolution center of the rotating body composed of the water sprinkling member 40 and the lower enlarged portion 503 which is a part of the second water storage chamber is separated. The moment of inertia of the water sprinkling member 40 after the start-up period is obtained by storing water in the lower enlarged portion 503 that functions as a part of the second water storage chamber later than the water stored in the first water storage chamber 421. Further, the revolution stability of the water sprinkling member 40 can be ensured satisfactorily.

  In the water discharge device FC, the lower enlarged portion 503 that functions as a part of the second water storage chamber is orthogonal to the central axis CL (C2) at a position corresponding to the downstream side of the first water storage chamber 421 in the first water passage. The cross-sectional area to be enlarged is formed. By configuring in this way, in addition to separating the distance between the revolution center (corresponding to the portion where the small diameter portion 21 and the opening 4 abut) and the lower enlarged portion 503 which is a part of the second water storage chamber. The water storage capacity is increased. Therefore, the moment of inertia of the water sprinkling member 40 after the start period is further increased, and the revolution stability of the water sprinkling member 40 can be ensured.

  Moreover, in the water discharging apparatus FC which concerns on this embodiment, the upper expansion part 501 which functions as at least one part of a 2nd water storage chamber is the 1st communication from the small diameter part 21 through the 1st water storage chamber 421 to the some water discharge port 422. It is arranged at a position corresponding to the upstream side of the first water storage chamber 421 in the water channel. By arrange | positioning in this way, the distance of the revolution center of the rotary body which consists of the cylinder 20 and the water sprinkling member 40, and a part of 2nd water storage chamber is closely approached. By storing water in the upper enlarged portion 501 configured as described above and functioning as a part of the second water storage chamber later than the water storage in the first water storage chamber 421, an increase in the moment of inertia of the water sprinkling member 40 is suppressed in the starting period. Therefore, the revolving startability of the water sprinkling member 40 can be ensured satisfactorily.

  In the water discharge device FC, the upper enlarged portion 501 that functions as a part of the second water storage chamber is orthogonal to the central axis CL (C2) at a position corresponding to the upstream side of the first water storage chamber 421 in the first water passage. The cross-sectional area to be enlarged is formed. By configuring in this way, in addition to reducing the distance between the revolution center (corresponding to the portion where the small diameter portion 21 and the opening 4 abut) and the upper enlarged portion 501 that is a part of the second water storage chamber. The water storage capacity is increased. Therefore, in the start-up period, an increase in the moment of inertia of the water sprinkling member 40 can be further suppressed, and the revolving startability of the water sprinkling member 40 can be ensured satisfactorily.

  Moreover, since the water discharging apparatus FC has the upper enlarged portion 501 and the lower enlarged portion 503 as described above and the intermediate portion 502 that connects them, an increase in the moment of inertia of the water sprinkling member 40 is further suppressed in the starting period. In addition, the moment of inertia of the water sprinkling member 40 after the start period is further increased. Therefore, the revolution startability and revolution stability of the water sprinkling member 40 can be reliably achieved.

  Moreover, in the water discharging apparatus FC, it accepts from the receiving port 501a on the opposite side to the receiving port 501a across the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 functioning as the second water storage chamber, and serves as the second water storage chamber. A discharge port 503a for discharging water stored in the functioning upper enlarged portion 501, intermediate portion 502, and lower enlarged portion 503 is provided.

  Since the discharge port 503a is thus provided, the water taken in from the reception port 501a is discharged from the discharge port 501a through the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 as the second water storage chamber. Is done. Accordingly, the entire upper enlarged portion 501, intermediate portion 502, and lower enlarged portion 503 as the second water storage chamber are filled with water, and the upper enlarged portion 501, intermediate portion 502, and lower enlarged portion as the second water storage chamber. The effect of increasing the moment of inertia of the water sprinkling member 40 by storing water in the portion 503 can be further enhanced.

  Further, in the water discharge device FC, in the second water passage 50 extending from the receiving port 501a to the discharge port 503a through the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503, the narrowed region with a narrowed cross-sectional area is downstream. Formed on the side. Specifically, when the tip of the nozzle 42a protrudes, the tip outer peripheral surface 42aa protrudes into the second water passage 50, and this region functions as a constricted region with a reduced flow passage cross-sectional area.

  As described above, since the narrowed region is formed on the downstream side of the second water passage 50, the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 as the second water storage chambers constituting the second water passage 50. Water can be easily collected, and the effect of increasing the moment of inertia of the water spray member 40 by storing water in the upper enlarged portion 501, the intermediate portion 502, and the lower enlarged portion 503 can be further enhanced. By comprising in this way, the moment of inertia of the water sprinkling member 40 after the start period can be increased further, and the revolution stability of the water sprinkling member 40 can be ensured.

  In addition, the water discharging apparatus of this embodiment can be used not only as a shower apparatus in a bathroom or a shower booth, but also in a toilet with a cleaning function, for example.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

FC: water discharging device CL: central axis C2: central axis 1: guide member 2: first body part 3: inflow chamber 3a: guide surface 4: opening 5: inflow hole 6: second body part 20: cylinder 21: Small diameter part 22: Large diameter part 23: Through hole 24: Opening 25: Opening 40: Sprinkling member 41: Case 41a: Water discharge opening 41b: Folding part 42: First water passage part 421: First water storage chamber 422: Water discharge opening 42a : Nozzle 42aa: Outer peripheral surface 42b: Guide projection 42c: Narrow tube portion 50: Second water passage 501a: Receiving port 501: Upper enlarged portion (reservoir)
502: Intermediate part 503: Lower enlarged part 503a: Discharge port

Claims (9)

A water discharge device capable of discharging water over a wide range while changing the water discharge direction,
An inflow chamber into which water flows in is formed therein, and a guide member having an opening communicating the inside of the inflow chamber and the outside of the inflow chamber;
A small-diameter portion having a diameter smaller than that of the opening and a large-diameter portion having a diameter larger than that of the opening, and the tip of the small-diameter portion projects from the opening to the outside of the guide member, and at least the large-diameter portion. Is a cylinder that is housed inside the inflow chamber and is configured to allow the water flowing into the inflow chamber to flow out from the tip of the small-diameter portion;
A plurality of water outlets are provided so as to be connected to the tip of the small diameter portion so as to be located outside the guide member, and a first water storage chamber communicating with each of the plurality of water outlets is formed therein. A watering member,
The cylindrical body is inclined around the central axis of the inflow chamber while being inclined with respect to the central axis of the inflow chamber in a state where at least a part of the small diameter portion is in contact with the opening due to water flowing into the inflow chamber. Configured to swing and revolve around its own central axis,
The water sprinkling member is at least partially disposed on the outer peripheral side of the first water storage chamber, and is configured to receive water that has passed through a gap between the small diameter portion and the guide member from a receiving port and store water. Has a second water reservoir,
The water discharge device, wherein the water supply speed to the second water storage chamber is configured to be smaller than the water supply speed to the first water storage chamber.   At least a part of the second water storage chamber is disposed at a position corresponding to the downstream side of the first water storage chamber of the first water passage from the small diameter portion through the first water storage chamber to the plurality of water outlets. The water discharging device according to claim 1, wherein the water discharging device is provided.   In a position corresponding to the downstream side of the first water storage chamber in the first water passage, the second water storage chamber has a lower enlarged portion in which a cross-sectional area orthogonal to the central axis is enlarged. The water discharging apparatus according to claim 2.   At least a part of the second water storage chamber is disposed at a position corresponding to the upstream side of the first water storage chamber of the first water passage from the small diameter portion through the first water storage chamber to the plurality of water outlets. The water discharging device according to claim 1, wherein the water discharging device is provided.   In a position corresponding to the upstream side of the first water storage chamber in the first water passage, the second water storage chamber has an upper enlarged portion in which a cross-sectional area orthogonal to the central axis is enlarged. The water discharging apparatus according to claim 4. In the position corresponding to the upstream side of the first water storage chamber in the first water passage, the second water storage chamber has an upper enlarged portion that expands a cross-sectional area orthogonal to the central axis,
In a position corresponding to the downstream side of the first water storage chamber in the first water passage, the second water storage chamber has a lower enlarged portion that expands a cross-sectional area perpendicular to the central axis, and
2. The water discharge device according to claim 1, wherein the second water storage chamber has an intermediate portion having a smaller cross-sectional area than the upper enlarged portion between the upper enlarged portion and the lower enlarged portion.   A discharge port is provided on the side opposite to the receiving port across the second water storage chamber to discharge water received from the receiving port and stored in the second water storage chamber. The water discharging apparatus according to claim 1.   The narrowed area | region which restrict | squeezed the flow-path cross-sectional area is formed in the downstream in the 2nd water flow path from the said receiving port through the said 2nd water storage chamber to the said discharge port, The downstream is formed. Water discharge device.   The water discharged from the outlet of the second water passage is configured to merge with water discharged from at least a part of the plurality of water outlets of the first water passage. The water discharging apparatus according to claim 7.

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