JP2015190247A - urinal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a urinal capable of preventing wash water discharged from one water discharge opening part from jumping out to an external part of a bowl part, and capable of effectively cleaning.SOLUTION: The present invention is a urinal for cleaning a bowl part by wash water, and comprises the bowl part for receiving urine and a water discharge device provided in an upper area in the bowl part and discharging the wash water to the bowl part, and the water discharge device comprises one water discharge opening part for opening up to the lateral direction from a lower part of itself, a supply passage for supplying the wash water in the water discharge opening part and a collision wall provided inside the water discharge opening part and formed so as to be laterally expandable when the wash water supplied from the supply passage collides, and executes any one among a first water discharge mode of supplying the wash water of a low instantaneous flow rate and a high speed from the supply passage and a second water discharge mode of supplying the wash water of a high instantaneous flow rate and a low speed from the supply passage.

Description

  The present invention relates to a urinal, and more particularly, to a urinal for washing a bowl portion with washing water discharged from a water discharging device (spreader).

In recent years, compact urinal discharging devices (spreaders) have been widely used because of their good design.
On the other hand, the performance which can wash | clean the bowl surface of a urinal over a wide range is calculated | required by the water discharging apparatus.

  Conventionally, for example, in a cleaning nozzle as described in Patent Document 1, a plurality of discharge ports including a discharge port on a side and a discharge port on a lower side are formed, and the switching valve has the same predetermined flow rate. A device that switches a plurality of discharge ports through which cleaning water is discharged is known.

  Moreover, in the nozzle head for washing | cleaning as described in patent document 2, the 1st water discharge flow path and the 1st water discharge flow path and the 2nd water discharge flow path from which the water discharge range differs are formed, and are common It is known that cleaning water having the same instantaneous flow rate per unit area is supplied to a first water discharge flow channel and a second water discharge flow channel from one supply flow channel.

JP 2004-150013 A JP-A-8-239889

However, in the urinal, there is also a demand that the cleaning water must be discharged at a high instantaneous flow rate for equipment protection cleaning such as removal of foreign matters such as pubic hair.
Based on such a request, when water is discharged at a high instantaneous flow rate over a wide area of the bowl surface using a conventional compact water discharge device, there is a problem that a part of the discharged wash water jumps out of the bowl surface. Yes.
Furthermore, in a urinal that does not have a conventional side wall provided at the left and right ends of the bowl part, that is, a urinal in which the front surface of the bowl part is formed by a continuous curved surface, In addition, when water is discharged at a high instantaneous flow rate, there is a further problem that part of the discharged cleaning water tends to jump out of the bowl surface.

  Moreover, when it is going to adjust a water discharge by providing a water discharge apparatus with a some water discharge port, since the water discharge apparatus is provided, the problem that a water discharge apparatus will enlarge will arise.

  The present invention has been made to solve the above-described problem, and includes a first water discharge mode for supplying a low instantaneous flow rate and a high-speed wash water to one water discharge opening, and a high instantaneous flow rate and a low-speed wash water. With the second water discharge mode for supplying the cleaning water, the cleaning water can be supplied, and the cleaning water discharged from the water discharge opening can be prevented from jumping out of the bowl portion, and the cleaning can be effectively performed. It aims to provide a urinal that can be performed.

In order to achieve the above object, the present invention provides a urinal for cleaning a bowl portion with cleaning water, the bowl portion receiving urine, and an upper region in the bowl portion for discharging the cleaning water to the bowl portion. The water discharge device is provided inside the water discharge opening, one water discharge opening that opens from the lower part of the water discharge device to the left-right direction, a supply passage that supplies cleaning water into the water discharge opening, and the water discharge opening. And a collision wall formed so that the wash water supplied from the supply passage can collide and spread to the left and right, and a first water discharge mode for supplying the wash water with a low instantaneous flow rate and high speed from the supply passage And a second water discharge mode in which a high instantaneous flow rate and a low-speed washing water is supplied from the supply passage.
In the present invention configured as described above, in the first water discharge mode, the low instantaneous flow rate and the high-speed washing water supplied from the supply passage collide with the collision wall, and the high-speed washing water collides with the collision wall. Thus, the water having a low instantaneous flow rate is discharged so as to spread over a wide range from one water discharge opening to the left and right regions of the bowl. Therefore, the discharged washing water can be prevented from jumping out of the bowl portion, and can be washed over a wide range up to the left and right regions of the bowl portion. In the second water discharge mode, the high instantaneous flow rate and low-speed washing water supplied from the supply passage collides with the collision wall, and the low-speed washing water collides with the collision wall. Water is discharged from the water discharge opening toward a relatively narrow central region of the bowl. Therefore, the discharged flushing water can be prevented from jumping out of the bowl portion, and the urine drainage of the urinal drainage pipe and foreign matters such as pubic hair can be removed, and the urinal drainage pipe The equipment can be protected and cleaned.
Therefore, the urinal can be effectively washed.

In this invention, Preferably, the water discharge opening part is formed in the range whose inclination | tilt angle with respect to the bowl surface of a bowl part is 5 to 25 degree | times.
In the present invention configured as described above, it is possible to suppress the washing water discharged from the water discharge opening from being reflected and bounced off the bowl surface, thereby forming a film-like flow along the bowl surface.

In the present invention, it is preferable that the supply passage of the water discharge device includes a first supply passage for supplying cleaning water to the water discharge opening and a second supply passage for supplying cleaning water to the water discharge opening. Provided in a main flow path for supplying cleaning water from a water source, a first water supply path for supplying cleaning water to the first supply path, a second water supply path for supplying cleaning water to the second supply path, and the first water supply path A second flow rate adjusting means for adjusting an instantaneous flow rate of the cleaning water in the first water supply passage and a second water supply amount provided in the second water supply passage and lower than the instantaneous flow rate of the cleaning water in the first water supply passage. The second flow rate adjusting means for adjusting the instantaneous flow rate of the wash water in the passage, and the wash water from the main flow path to the first water supply passage and the first water discharge mode and the second water discharge mode so as to be able to execute either one Switching means capable of supplying either one of the second water supply passages, The channel cross-sectional area of at least one point of the second supply passage and a second water supply passage is formed smaller than a flow path cross-sectional area of the first supply passage and the first water supply passage.
In the present invention configured as described above, in the first water discharge mode, the low instantaneous flow rate and high-speed washing water supplied from the second supply passage collides with the collision wall, and the high-speed washing water collides with the collision wall. By doing so, the water with a low instantaneous flow rate is discharged so as to spread over a wide range from one water discharge opening to the left and right regions of the bowl. Therefore, the discharged washing water can be prevented from jumping out of the bowl portion, and can be washed over a wide range up to the left and right regions of the bowl portion. In the second water discharge mode, the high instantaneous flow rate and low-speed washing water supplied from the first supply passage collides with the collision wall, and the low-speed washing water collides with the collision wall. Water is discharged from one water discharge opening toward a relatively narrow central region of the bowl portion. Therefore, the discharged flushing water can be prevented from jumping out of the bowl portion, and the urine drainage of the urinal drainage pipe and foreign matters such as pubic hair can be removed, and the urinal drainage pipe The equipment can be protected and cleaned. Therefore, the urinal can be effectively washed.

In the present invention, preferably, the water discharge device further includes a cross-sectional area changing means capable of changing a flow passage cross-sectional area of the supply passage, and further provided in the water supply passage and the water supply passage for supplying cleaning water from the water supply source. And a flow rate switching means capable of switching the instantaneous flow rate of the cleaning water in the water supply passage between a low instantaneous flow rate and a high instantaneous flow rate. In the first water discharge mode, the flow rate switching means supplies the cleaning water in the water supply passage. Switching to a low instantaneous flow rate, the cross-sectional area changing means changes the cross-sectional area of the supply passage to be relatively small so that the flow rate of the cleaning water in the supply passage becomes relatively high. In the second water discharge mode, the flow rate switching mechanism supplies water. The cleaning water in the passage is switched to a high instantaneous flow rate, and the cross-sectional area changing means changes the cross-sectional area of the supply passage to be relatively large so that the flow rate of the cleaning water in the supply passage is relatively low.
In the present invention configured as described above, in the first water discharge mode, the flow rate switching unit causes the cleaning water in the water supply passage to have a low instantaneous flow rate, and the cross-sectional area changing unit increases the flow rate of the cleaning water in the supply passage. The cleaning water in the supply passage can be made to have a low instantaneous flow rate and a high speed with a relatively simple structure by using the common water supply passage and the supply passage. In the second water discharge mode, the flow rate switching mechanism can cause the cleaning water in the water supply passage to have a high instantaneous flow rate, and the cross-sectional area changing means can reduce the flow rate of the cleaning water in the supply passage to a relatively low speed. Water can be flowed at a high instantaneous flow rate and at a low speed. Therefore, one of the first water discharge mode and the second water discharge mode can be executed with a relatively simple structure using the common water supply passage and the supply passage.

In the present invention, it is preferable that the first water discharge mode is executed when the user uses the urinal, and the second water discharge is performed every time a predetermined time elapses separately from when the user uses the urinal. A control unit that controls to execute the mode is provided.
In the present invention configured as described above, the control unit can execute the first water discharge mode when the user uses the urinal and perform urinal washing for washing a wide range up to the left and right regions of the bowl part. it can. In addition, the control unit can execute the second water discharge mode every time a predetermined time elapses, separately from when the user uses the urinal, such as urine discharge and pubic hair in the urinal drain pipe Foreign matter can be removed, and equipment protection cleaning of the urinal drain piping can be performed.

  According to the urinal of the present invention, it is possible to prevent washing water discharged from one water discharge opening from jumping out of the bowl portion, and to wash effectively.

1 is an overall perspective view showing a urinal according to an embodiment of the present invention. It is a front view of the urinal of FIG. It is a side view of the urinal of FIG. It is the longitudinal cross-sectional view seen along the IV-IV line of FIG. It is a top view of the urinal of FIG. It is a perspective view which shows the spreader of the urinal by embodiment of this invention. It is the schematic which shows the state which attached the spreader of the urinal by embodiment of this invention to the bowl surface from the side. It is the schematic which shows the state which attached the spreader of the urinal by embodiment of this invention to the bowl surface from upper direction. It is sectional drawing seen along the IX-IX line of FIG. It is sectional drawing seen along the XX line of FIG. It is the schematic which shows the structure of the flow path of the automatic toilet cleaning unit of the urinal by embodiment of this invention. It is the schematic which shows the modification of the structure of the flow path of the automatic toilet cleaning unit of the urinal by embodiment of this invention.

  A urinal according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, the basic structure of a urinal will be described with reference to FIGS. 1 is an overall perspective view showing a urinal according to an embodiment of the present invention, FIG. 2 is a front view of the urinal of FIG. 1, FIG. 3 is a side view of the urinal of FIG. 1, and FIG. 4 is a longitudinal sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is a plan view of the urinal in FIG.

  As shown in FIGS. 1 to 5, reference numeral 1 denotes a urinal according to an embodiment of the present invention. The urinal 1 includes a urinal body 2 made of earthenware and a urinal body 2 for washing the urinal body 2. An automatic toilet cleaning unit 4 is provided. The urinal 1 is a wall-mounted urinal that is attached along the wall surface behind the floor so that the lowermost part of the urinal is floated from the floor surface. It may be a urinal of the type.

  The urinal body 2 of the urinal 1 has a storage chamber 6 (shown schematically in FIGS. 2 and 3 and omitted in other drawings) for storing the automatic toilet cleaning unit 4 described above at the upper end. A bowl surface 8 extending downward from the front surface 7 of the storage chamber 6 and a discharge port 10 formed at the bottom of the bowl surface 8 are provided.

  The storage chamber 6 is formed by a lid 3 that is a separate body from the urinal body 2. Further, the front surface 7 of the storage chamber 6 is formed to be inclined rearward as will be described in detail later. In addition, an eye plate 12 is disposed at the discharge port 10. Further, the discharge port 10 is connected to a drain trap pipe (not shown) and a drain pipe (not shown) arranged on the downstream side.

  Next, the automatic toilet cleaning unit 4 will be described with reference to FIGS. FIG. 6 is a perspective view showing a spreader of a urinal according to an embodiment of the present invention, and FIG. 7 is a schematic view showing a state in which the spreader of the urinal according to the embodiment of the present invention is attached to a bowl surface from the side. FIG. 8 is a schematic view showing a state in which the spreader of the urinal according to the embodiment of the present invention is attached to the bowl surface, and FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 10 is a cross-sectional view taken along line XX of FIG. 7, FIG. 11 is a schematic diagram showing the configuration of the flow path of the automatic toilet cleaning unit of the urinal according to the embodiment of the present invention, and FIG. It is the schematic which shows the modification of the structure of the flow path of the automatic toilet cleaning unit of the urinal by embodiment of this. The bowl surface 8 in FIGS. 7 to 9 is in a state where the lower part is slightly inclined toward the rear side.

The automatic toilet cleaning unit 4 includes a main water supply pipe 14 for supplying cleaning water from a water supply source such as a water supply,
A first water supply pipe 16 branched from the main water supply pipe 14, a second water supply pipe 18 branched from the main water supply pipe 14, a first flow rate adjusting device 20 provided in the first water supply pipe 16, and a first water supply pipe 16, a first on-off valve 22 for supplying and stopping water supply, a second flow rate adjusting device 24 provided in the second water supply pipe 18, and a second water supply pipe 18 attached to the second water supply pipe 18 for supplying and stopping water supply. 2 from the on-off valve 26, the spreader 28 which is a water discharger attached to the tips of the first water supply pipe 16 and the second water supply pipe 18, the human body detection sensor 30 for detecting the presence or absence of a user, and the human body detection sensor 30 And a control unit 32 capable of controlling the first on-off valve 22, the second on-off valve 26, and the like based on the detection signal and a predetermined control program.
The automatic toilet cleaning unit 4 passes the cleaning water from one main water supply pipe 14 to the bowl surface 8 through the first water supply pipe 16 and the second water supply pipe 18 that supply cleaning water having different instantaneous flow rates and flow velocities. It is supposed to be supplied.

The first flow rate adjusting device 20 is a constant flow valve that can adjust the wash water passing through the first water supply pipe 16 to an appropriate constant flow rate. The first flow rate adjusting device 20 may be configured by another device that can adjust the cleaning water to an appropriate flow rate using a flow rate sensor or the like. The first flow rate adjusting device 20 may be configured to be controlled by the control unit 32. The first flow rate adjusting device 20 sets the instantaneous flow rate of the cleaning water supplied to the downstream first supply passage 38 to be described later to a relatively high instantaneous flow rate range, for example, a range of 8 to 17 L / min, preferably 11 to 11. The range is adjusted to 13 L / min.
The first on-off valve 22 is an electromagnetic valve that opens and closes the flow path of the first water supply pipe 16 according to a control signal from the control unit 32. The 1st on-off valve 22 may be comprised by the other flow-path opening-and-closing apparatus which can supply and stop water supply.

The second flow rate adjusting device 24 is a constant flow valve that can adjust the cleaning water passing through the second water supply pipe 18 to an appropriate constant flow rate. The second flow rate adjusting device 24 may be configured by another device that can adjust the cleaning water to an appropriate flow rate using a flow rate sensor or the like. The second flow rate adjusting device 24 may be configured to be controlled by the control unit 32. The second flow rate adjusting device 24 sets the instantaneous flow rate of the cleaning water supplied to the downstream second supply passage 40 to be described later to a relatively low instantaneous flow rate range, for example, a range of 2 to 8 L / min, preferably 5 to 5. The range is adjusted to 7L / min.
The second on-off valve 26 is an electromagnetic valve that opens and closes the flow path of the second water supply pipe 18 according to a control signal from the control unit 32. The second opening / closing valve 26 may be constituted by another flow path opening / closing device capable of supplying and stopping water supply.

In the present embodiment shown in FIG. 11 described above, the automatic toilet flushing unit 4 is attached to the first water supply pipe 16 to supply and stop water supply, and to the second water supply pipe 18 to supply water. And a second on-off valve 26 for supplying and stopping the water, and the control unit 32 opens and closes the first on-off valve 22 to control the start and stop of the supply of cleaning water to the first supply passage 38, and the second on-off valve 26 is opened and closed to control the start and stop of the supply of cleaning water to the second supply passage 40.
On the other hand, in the present embodiment, the automatic toilet cleaning unit 4 replaces the first on-off valve 22 and the second on-off valve 26 described above with the main water supply pipe 14, the first water supply pipe 16, and the second water supply pipe 18. A switching valve such as a three-way switching valve may be provided at the branch point. Specifically, the control unit 32 controls a switching valve provided at a branch point between the main water supply pipe 14, the first water supply pipe 16, and the second water supply pipe 18, thereby the first water supply pipe 16 and the first water supply pipe 16. The supply start and stop of the cleaning water to the supply passage 38 and the supply start and stop of the cleaning water to the second water supply pipe 18 and the second supply passage 40 can be controlled independently. As another modified example, the automatic toilet cleaning unit 4 starts and stops supplying cleaning water to the first water supply pipe 16 and the first supply passage 38 instead of the first on-off valve 22 and the second on-off valve 26 described above. In addition, another valve structure that can independently control the start and stop of the supply of the washing water to the second water supply pipe 18 and the second supply passage 40 and a combination thereof may be provided.

The human body detection sensor 30 is an infrared sensor that detects the presence / absence of a user in front of the urinal 1 and the distance to the user. When the human body detection sensor 30 detects that the user has added a use and has moved away from the urinal 1 by a predetermined distance, an operation signal is transmitted from the control unit 32, and the second on-off valve 26 is opened by this operation signal. Thus, the wash water is supplied from the second water supply pipe 18 to the spreader 28, and the bowl surface 8 of the urinal 1 is washed. The human body detection sensor 30 is not limited to an infrared sensor, but may be a concealable radio wave sensor (microwave sensor).
The control unit 32 receives the detection result of the presence / absence of the user of the human body detection sensor 30 and controls the urine washing operation (first water discharge mode) by opening and closing the second on-off valve 26, as well as a predetermined predetermined value. An operation signal is transmitted from the control unit 32 every time, for example, 2 hours, and the first on-off valve 22 is controlled to open by this operation signal. As a result, wash water is supplied from the first water supply pipe 16 to the spreader 28, the bowl surface 8 of the urinal 1 is washed, and a drain trap (not shown) and a drain pipe disposed downstream of the discharge port 10. Facility protection cleaning (second water discharge mode) that suppresses the propagation of various germs in the road (not shown) and suppresses adhesion of urine stones or the like can be performed.

  1 to 5 again, the detailed structure of the urinal body 2 of the urinal 1 will be described. First, as shown in FIGS. 2 and 3, the urinal 1 according to the present embodiment is a urinal of the type in which an automatic toilet cleaning unit 4 is stored in a storage chamber 6 formed at the upper end of the urinal body 2. It is. In this embodiment, in such a type of urinal 1, the front surface 7 of the storage chamber 6 of the urinal body 2 is formed continuously with the bowl surface 8 and inclined rearward. In the urinal body 2, the front surface 7 of the storage chamber 6 is integrated with the bowl surface 8. Furthermore, the front surface 7 of the storage chamber 6 is formed continuously with the upper side of the bowl surface 8 and further inclined toward the rear. Here, “continuous” of the front surface 7 and the bowl surface 8 of the storage chamber 6 means that the front surface 7 and the bowl surface 8 of the storage chamber 6 are formed flush or substantially flush. Yes. Moreover, it does not need to be completely flush, and for example, there may be a small step, and it is sufficient that the washing water flowing from the front surface of the storage chamber 6 to the bowl surface 8 does not peel off.

  The bowl surface 8 has an arc-shaped (arch-shaped) front portion 8a that is open from the top to the bottom so that the front surface faces the user. The bowl surface 8 is not provided with a side surface portion that protrudes in the shape of a wall forward from the conventional bowl surface in the upper region of the bowl surface 8 where the spreader 28 is provided, and only from the front surface portion 8a. Is formed. Such a front portion 8a forms a forward curved surface in which the perpendicular of the tangent of its curved surface extends in a direction toward the user standing in front of the urinal body 2.

  The front portion 8a of the bowl surface 8 is formed as a concave curved surface that is continuous in the left-right direction. The front portion 8a is a curved surface that follows the curved surface of the user's trunk so that the curved surface of the user's trunk can be easily received. The upper region formed only from the front surface portion 8a of the bowl surface 8 is an arc (curvature radius R) drawn with one curvature radius R from the left end portion 8b to the right end portion 8c of the bowl surface 8 in plan view. Is an arc that does not change substantially in the middle, and is formed along an arc called a single R), and a central portion of the arc forms a single R region 8g disposed on the rear side. . That is, in the single R region 8g, the curved surface is formed by a substantially single arc shape having a substantially single radius of curvature R. The single R region 8g is formed such that the radius of curvature of the arc gradually decreases from the upper end 8d of the bowl surface 8 downward, and the curvature gradually increases. The single R region 8g of the bowl surface 8 is formed at least in a range of 200 mm from the upper end of the bowl surface 8, and preferably in a region of 300 mm from the upper end. A region further below the single R region 8g of the bowl surface 8 forms a composite R region 8h which is a combination of arcs having two types of curvature radii R, or a combined shape portion formed by combining arcs and straight lines. Yes.

Specifically, as shown in FIG. 1, the bowl surface 8 is positioned at a distance L1 (L1 = 150 mm) from the upper end 8d of the bowl surface 8 in the single R region 8g, that is, the front surface 7 of the storage chamber 6 and the spreader. It is formed by a front portion 8a formed by an arc having a single radius of curvature with a radius of curvature R1 (R1 = 300 mm) which is a relatively large radius of curvature in a plan view at a nearby height position.
As shown in FIG. 12, the bowl surface 8 has a radius of curvature smaller than the radius of curvature R1 in a plan view at a position of a distance L2 (L2 = 300 mm) from the upper end 8d of the bowl surface 8 in the single R region 8g. It is formed by a front portion 8a formed by an arc having a single radius of curvature with a certain radius of curvature R2 (R2 = 200 mm).
The radius of curvature of the front portion 8a in the single R region 8g is set, for example, in the range of 200 to 500 mm, preferably in the range of 200 to 400 mm. With this range, it is possible to prevent the user's hand or arm holding the local part from coming into contact with the bowl surface. It is possible to suppress the occurrence of a situation of fouling.

The bowl surface 8 is a compound arc formed by combining arcs having two kinds of curvature radii in plan view at a position of a distance L3 (L3 = 450 mm) from the upper end 8d of the bowl surface 8 in the compound R region 8h. It is formed by a front portion 8a having a shape.
In the lower composite R region 8h, the bowl surface 8 has a left end 8b and a right end 8c extending forward, and a central portion 8e is retracted rearward, for example, from the upper end 8d of the bowl surface 8. At the position of the distance L4 (L4 = 500 mm), an arc-shaped portion 8i (front portion 8a) that opens in a direction toward the user in a plan view and a straight portion 8j (side surface) that protrudes toward the user on both sides thereof. Part 8k).
The bowl surface 8 has a front surface portion 8a and a side surface portion 8k protruding toward the user in a region below the position of the distance L4 from the upper end 8d.

  The bowl surface 8 is arranged such that the left end 8b and the right end 8c protrude forward from the center 8e in a certain horizontal section. Furthermore, the bowl surface 8 is arranged so that the left end portion 8b and the right end portion 8c gradually protrude forward as it goes downward. Further, the front surface portion 8a of the bowl surface 8 is formed to be inclined rearward from the upper end 8d of the bowl surface 8 downward. Accordingly, the central portion 8e of the front portion 8a is formed on the back side so as to gradually retreat downward from the upper end 8d. Further, since the spreader 28 is disposed slightly rearward of the central portion 8e, the user can easily approach the front portion 8a.

  In the lower part of the bowl surface 8, a left end 8b and a right end 8c protrude forward toward the tip 8f. While the user approaches the bowl surface 8 at the upper part of the bowl surface 8, the tip 8f at the lower part of the bowl surface 8 protrudes toward the user side, so that the user's urine hangs down on the floor. It is difficult to cause spillage that stains the floor. The lower part of the bowl surface 8 is formed on the lower side so as to collect the wash water flowing down and guide it to the discharge port 10.

Next, returning to FIGS. 6 to 10, the detailed structure of the spreader 28 will be described.
As shown in FIG. 7 and the like, in the automatic toilet cleaning unit 4, the spreader 28 is attached to the front surface 7 of the storage chamber 6 of the front portion 8 a of the urinal body 2.
The spreader 28 supplies a single water discharge opening 34 that discharges the cleaning water toward the bowl surface 8, a first supply passage 38 that supplies the cleaning water to the water discharge opening 34, and supplies the cleaning water to the water discharge opening 34. A second supply passage 40.

The first supply passage 38 is connected to the tip of the first water supply pipe 16 and forms a water passage independent of the second supply passage 40. The first supply passage 38 supplies a flow of cleaning water having a relatively high instantaneous flow rate and a relatively low speed to the water discharge opening 34 in the equipment protection cleaning operation (second water discharge mode).
As shown in FIG. 9, the first supply passage 38 has a relatively large inner diameter D1 of the water passage, and has a relatively large cross-sectional area C1 of the water passage as shown in FIG. Accordingly, the first supply passage 38 can form a relatively low flow rate of the wash water because the cross-sectional area C1 of the water passage is relatively large even when the wash water having a relatively high instantaneous flow rate flows. The first supply passage 38 is formed so that the flow rate of the cleaning water in the first supply passage 38 is in a relatively low flow rate range, for example, in the range of 1 to 3 m / s, preferably in the range of 2 to 3 m / s. Has been.
Note that the flow rate of the cleaning water in the first supply passage 38 may be set by forming the cross-sectional area of at least a part of the first water supply pipe 16 smaller than the cross-sectional area of the first supply passage 38.

The second supply passage 40 is connected to the tip of the second water supply pipe 18 and forms a water passage independent of the first supply passage 38. The second supply passage 40 has a relatively low instantaneous flow rate and supplies a relatively high-speed wash water flow to the water discharge opening 34 in the urine washing operation (first water discharge mode).
As shown in FIG. 9, the second supply passage 40 is formed such that the inner diameter D2 of the water passage is relatively small, and the cross-sectional area C2 of the water passage is relatively small as shown in FIG. Accordingly, the second supply passage 40 can form a relatively high-speed flow of the wash water because the cross-sectional area C2 of the water passage is relatively small even when the wash water having a relatively low instantaneous flow rate flows. The second supply passage 40 is formed so that the flow rate of the washing water in the second supply passage 40 is in a relatively high flow rate range, for example, in the range of 4 to 15 m / s, preferably in the range of 8 to 12 m / s. Has been.
The flow rate of the cleaning water in the second supply passage 40 may be set by forming the cross-sectional area of at least a part of the second water supply pipe 18 smaller than the cross-sectional area of the second supply passage 40.

The first supply passage 38 and the second supply passage 40 extend linearly from the back side to the front side of the bowl surface 8 in parallel with each other in the spreader 28. The first supply passage 38 forms a first jet outlet 38 a that opens into the water discharge opening 34.
The second supply passage 40 forms a second jet port 40a that opens into the water discharge opening 34 below the first jet port 38a. The second supply passage 40 forms one passage that opens the two second ejection ports 40a. In the present embodiment, the second jet outlet 40a is formed by two openings, but the second jet outlet 40a may be formed by one opening.

The water discharge opening 34 is provided in the water discharge opening upper wall 34a that forms the left and right ends of the water discharge opening 34 and the water discharge opening 34, and forms a front wall surface inside the water discharge opening 34. A collision wall 34b formed so that the wash water supplied from the supply passage 38 and the second supply passage 40 can collide and spread left and right, and a rear wall surface inside the water discharge opening 34. And a water discharge opening rear wall 34c.
The water discharge opening 34 is formed so as to open in a fan shape from the lower part to the left-right direction, and between the collision wall 34b and the water discharge opening rear wall 34c between the left and right water discharge opening upper walls 34a at the lower part of the spreader 28. The fan-shaped opening passage 34d is formed.
Since the spreader 28 is not formed with a plurality of water discharge openings but has only one water discharge opening 34, the thickness of the spreader 28 in the front-rear direction can be suppressed, and the spreader 28 can be formed compactly. can do.

The water discharge opening upper wall 34a has an inner upper wall 34e extending so as to incline downward, and an outer upper wall 34f extending so as to incline upward from the lower end of the inner upper wall 34e.
The inner upper wall 34e is formed at a position of about 40 ° symmetrically from the vertically lower side, and the angle A1 between the left and right inner upper walls 34e is formed at about 80 °. The angle A1 between the left and right inner upper walls 34e is formed, for example, in the range of 50 ° to 120 °, preferably in the range of 60 ° to 90 °. The inner upper wall 34e forms an upper region on the inner side of the opening passage 34d of the water discharge opening 34, that is, an outlet region of the first supply passage 38, so that the inner upper wall 34e is ejected from the first outlet 38a of the first supply passage 38. The upper edge of the left and right spreading of the cleaning water is regulated so that the cleaning water is guided along the left and right inner upper walls 34e and discharged mainly from the water discharge opening 34 within the range of the angle A1. In addition, since the inner upper wall 34e extends downward from the horizontal, the cleaning water supplied from the first supply passage 38 is guided to the lower side of the bowl surface 8 while suppressing the spread to the left and right. Can do.

  The outer upper wall 34f is formed at a position of about 115 ° symmetrically from the vertically lower side, and the angle A2 between the left and right outer upper walls 34f is formed at about 230 °. The angle A2 between the left and right outer upper walls 34f is, for example, in the range of 190 ° to 250 °, preferably in the range of 210 ° to 230 °. The outer upper wall 34 f is formed at the upper end of the upper region on the outer side of the opening passage 34 d of the water discharge opening 34. Since the second upper outlet 34a of the second supply passage 40 is opened on the extended line of the outer upper wall 34f, the outer upper wall 34f has the washing water ejected from the second outlet 40a of the second supply passage 40. The upper edges of the wash water are determined so that they can flow along the left and right outer upper walls 34f and are discharged from the water discharge opening 34 mainly within the range of the angle A2. Since the outer upper wall 34f extends upward from the horizontal, the upper edge of the cleaning water flowing out from the second supply passage 40 along the outer upper wall 34f is discharged from the spreader 28 so as to rise obliquely upward. The Therefore, when the cleaning water is supplied from the second supply passage 40 at a relatively high speed, the water discharge opening 34 allows the cleaning water to diffuse over a region within the range of the angle A2 between the left and right outer upper walls 34f. Water can be discharged, and a water curtain can be formed that extends from diagonally above and below the bowl surface 8 to the vicinity of both left and right ends.

  The collision wall 34b is formed in a fan shape and forms the front surface of the opening passage 34d. The collision wall 34b is provided on the front side of the first supply passage 38 so as to face the first jet port 38a of the first supply passage 38, and is arranged so as to face the second jet port 40a of the second supply passage 40. 2 is provided on the front side of the supply passage 40. The collision wall 34b causes each of the cleaning water supplied from the first supply passage 38 and the cleaning water supplied from the second supply passage 40 to collide with itself and spread to the fan-shaped region of the opening passage 34d. It can be shed. The collision wall 34b is formed to be inclined rearward.

  As shown in FIG. 10, the water discharge opening rear wall 34c is connected to the first jet outlet 38a of the first supply passage 38 in the central upper region thereof, and the second supply passage 40 of the second supply passage 40 is below the first jet outlet 38a. It is connected with 2 jet nozzles 40a. The water discharge opening rear wall 34c is formed in a fan shape, forms a rear surface of the water discharge opening 34, and from the wash water supplied from the first supply passage 38 to the collision wall 34b and the second supply passage 40. Each of the supplied cleaning water can be allowed to flow so as to spread over the fan-shaped region of the water discharge opening 34. The water discharge opening rear wall 34c extends in parallel with the collision wall 34b and is inclined rearward. The rearward inclination angle of the water discharge opening rear wall 34c is made larger than the rearward inclination angle of the bowl surface 8 in the vicinity of the water discharge opening rear wall 34c, and the water discharge opening 34 is inclined with respect to the bowl surface 8 of the bowl part. Is formed within a range of 5 to 25 degrees. Therefore, the washing water is discharged from the water discharge opening 34 toward the front surface 7 of the storage chamber 6 so as not to be rebounded, and a water curtain is formed on the bowl surface 8.

In the present embodiment, as shown in FIG. 11 described above, the automatic toilet cleaning unit 4 includes a main water supply pipe 14 that supplies cleaning water from a water supply source such as a water supply, and a first water supply branched from the main water supply pipe 14. A pipe 16, a second water supply pipe 18 branched from the main water supply pipe 14, a first flow rate adjusting device 20 provided in the first water supply pipe 16, and a supply of water supplied to and stopped from the first water supply pipe 16. The first on-off valve 22, the second flow rate adjusting device 24 provided in the second water supply pipe 18, the second on-off valve 26 attached to the second water supply pipe 18 for supplying and stopping water supply, and the first water supply pipe 16 And a spreader 28, which is a water discharger attached to the tip of the second water supply pipe 18, and a first on-off valve 22, a second on-off valve 26, and the like based on a detection signal from the human body detection sensor 30, a predetermined control program, and the like. Control unit that can be controlled And Tsu door 32, and a. Further, as described above, the spreader 28 cleans the water discharge opening 34 that discharges the cleaning water toward the bowl surface 8, the first supply passage 38 that supplies the cleaning water to the water discharge opening 34, and the water discharge opening 34. And a second supply passage 40 for supplying water.
On the other hand, in this embodiment, as shown in FIG. 12, as a modification, the automatic toilet bowl washing unit 4 is replaced with the first water supply pipe 16 and the second water supply pipe 18 described above, and one common water supply pipe. 42, the spreader 28 is provided with one common supply passage 44 instead of the first supply passage 38 and the second supply passage 40 of the spreader 28, and the spreader 28 further includes the common supply passage 44. The urinal 1 is provided with a cross-sectional area changing means 46 capable of changing the cross-sectional area of the flow path, and the urinal 1 is provided in the water supply passage 48 for supplying the cleaning water from the water supply source and the water supply passage 48. The flow rate switching means 50 that can switch the flow rate between a low instantaneous flow rate and a high instantaneous flow rate can be provided. The cross-sectional area changing means 46 may be provided in the water supply passage 48.

In this modification, specifically, as shown in FIG. 12, the automatic toilet cleaning unit 4 includes a main water supply pipe 14 (water supply passage 48) for supplying cleaning water from a water supply source such as a water supply, and a main water supply pipe. 14, one common water supply pipe 42 (water supply passage 48), the above-described flow rate switching means 50 provided in the common water supply pipe 42, and the above-described cross-sectional area change provided in the common supply passage 44 of the spreader 28. Means 46. The main water supply pipe 14 and the common water supply pipe 42 may be further attached with other devices such as on-off valves.
The control unit 32 can control the flow rate switching unit 50, the cross-sectional area changing unit 46, and the like based on the detection signal from the human body detection sensor 30, a predetermined control program, and the like. In the control unit 32, in the urine washing operation (first water discharge mode), the flow rate switching means 50 switches the flush water in the common water supply pipe 42 to a low instantaneous flow rate, and the cross-sectional area changing means 46 changes the cross-sectional area of the common supply passage 44. The flow rate is changed so that the flow rate of the cleaning water in the common supply passage 44 is controlled to be relatively high. In the equipment protection cleaning (second discharge mode), the flow rate switching unit 50 cleans the common water supply pipe 42. The water is switched to a high instantaneous flow rate, and the cross-sectional area changing means 46 is controlled to change the cross-sectional area of the common supply passage 44 relatively large so that the flow rate of the cleaning water in the common supply passage 44 is relatively low. it can.

The flow rate switching means 50 may be any device that can adjust the instantaneous flow rate of the cleaning water in the water supply passage 48 and can switch from a low instantaneous flow rate to a high instantaneous flow rate or from a high instantaneous flow rate to a low instantaneous flow rate. . The cross-sectional area changing means 46 has a mechanism that determines the size of the cross-sectional area of the common supply passage 44 by moving a plate in which a plurality of openings having different inner diameters or sizes are formed. It is possible to change the flow passage cross-sectional area of the common supply passage 44 by changing a certain opening to another opening by moving the plate.
As still another example, the cross-sectional area changing means 46 has a mechanism that can be changed so that the inner diameter or size of the opening is enlarged or reduced, so that the opening has the size of the cross-sectional area of the common supply passage 44. And by changing the size of the opening, the size of the opening can be changed to an opening having a different size, and the flow passage cross-sectional area of the common supply passage 44 can be changed. You may be able to do it.

Next, the cleaning operation of the urinal according to the embodiment of the present invention will be described.
First, the flow of the urine washing operation by the urinal 1 according to the embodiment of the present invention will be described.
Normally, when the user stands in front of the urinal 1, the human body detection sensor 30 detects the presence of the user and sends detection information to the control unit 32, and the control unit 32 recognizes the presence of the user. When the user finishes urination on the bowl surface 8 of the urinal 1 and the user who has finished urination leaves from the front of the urinal 1 and the human body detection sensor 30 is in a non-detection state, the control unit 32 causes the user to urinate the urinal. The control unit 32 determines that it has left 1 and starts the urine washing operation (first water discharge mode).

  In the urine washing operation (first water discharge mode), the control unit 32 sends a control signal to the second on-off valve 26 to open the second on-off valve 26 and supply the wash water supplied from the main water supply pipe 14 to the second water supply water. The second supply passage 40 is supplied from the pipe 18. At this time, the instantaneous flow rate per unit area of the cleaning water supplied to the second supply passage 40 is adjusted by the second flow rate adjusting device 24 to the above-described relatively low instantaneous flow rate range. Further, the flow rate of the cleaning water supplied to the second supply passage 40 is set to the above-described relatively high flow rate because the flow passage cross-sectional area C2 of the second supply passage 40 is formed to be relatively small. Therefore, a relatively high-speed wash water flow is discharged from the second jet outlet 40a of the second supply passage 40 into the water discharge opening 34, collides with the collision wall 34b, and is diffused.

  The washing water that has collided with the collision wall 34b at a relatively high flow velocity flows so as to spread radially from the lower side to the upper left and right sides after the collision. Accordingly, the wash water discharged from the water discharge opening 34 is discharged so as to spread upward from between the left and right outer upper walls 34f in the left-right direction, and in the front-rear direction, the collision wall 34b and the water discharge opening rear wall. The liquid is discharged rearward from the space 34c toward the bowl surface 8 on the rear side. 1 and 10, the flow of cleaning water discharged from the water discharge opening 34 is indicated by an arrow A. The upper wash water in the water discharge opening 34 is discharged so as to rise obliquely upward and leftward along the outer upper wall that is inclined upward from the horizontal to the left or right.

  Since the angle between the left and right outer upper walls 34f is formed to be relatively large, in the first water discharge mode, the wash water discharged from the water discharge opening 34 has a wide range from the left and right upper side to the lower center of the bowl surface 8. Water is discharged. Further, the discharged wash water can be washed over a wide range from the left and right regions obliquely above and to the left and right of the spreader 28 and from the central region of the bowl surface 8 to a wide range of left and right regions. The area where the wash water is discharged in the first water discharge mode is an area that covers the area where the wash water is discharged in the second water discharge mode described later. In the first water discharge mode, the wash water discharged from the water discharge opening 34 is a wash water having a relatively low instantaneous flow rate, so that the wash water reaches the vicinity of both left and right ends of the bowl surface 8 to perform cleaning. Without flowing out to the outside beyond the left and right ends of the surface 8, it is possible to flow down while washing the regions near the both ends of the left end 8b and the right end 8c of the bowl surface 8.

As described above, the cleaning water discharged from the water discharge opening 34 of the spreader 28 flows in a radial direction from the spreader 28 so as to spread widely so as not to generate a portion that cannot be cleaned on the surface of the bowl surface 8. The bowl surface 8 as a whole can be cleaned well while flowing down. The washing water flows down the bowl surface 8 and is discharged from the discharge port 10, passes through the downstream drain trap pipe (not shown), and further flows toward the downstream drain pipe (not shown).
When water discharge from the water discharge opening 34 of the spreader 28 is continued for a certain period of time, the control unit 32 closes the second on-off valve 26 to end the water discharge from the spreader 28, and the urine washing operation (first water discharge mode) ).

Next, the flow of the equipment protection cleaning operation (second water discharge mode) by the urinal 1 according to the embodiment of the present invention will be described.
The control unit 32 performs an equipment protection cleaning operation (second water discharge mode) separately from the urine cleaning operation (first water discharge mode).
The control unit 32 has passed a certain elapsed time since the previous equipment protection cleaning (for example, 2 hours have elapsed since the last equipment protection cleaning). In addition, the equipment protection cleaning operation is started when the use conditions such as the number of use of the urinal 1 reaching a certain number in a certain period are satisfied.

  In the second water discharge mode, the control unit 32 sends a control signal to the first on-off valve 22 to open the first on-off valve 22 and supply the cleaning water supplied from the main water supply pipe 14 to the first supply from the first water supply pipe 16. Supply to the passage 38. At this time, the instantaneous flow rate of the cleaning water supplied to the first supply passage 38 is adjusted by the first flow rate adjusting device 20 to the above-described relatively high instantaneous flow rate range. Further, the flow rate of the cleaning water supplied to the first supply passage 38 is set to the above-described relatively low flow rate because the flow passage cross-sectional area C1 of the first supply passage 38 is relatively large. Therefore, a relatively low-speed wash water flow is discharged from the first jet outlet 38a of the first supply passage 38 into the water discharge opening 34, collides with the collision wall 34b, and is diffused.

  The washing water that collides with the collision wall 34b at a relatively low flow velocity flows mainly so as to spread downward after the collision. Accordingly, the wash water discharged from the water discharge opening 34 is discharged so as to spread downwardly between the left and right water discharge opening upper walls 34a in the left-right direction, and in the front-rear direction, the collision wall 34b and the water discharge are discharged. It is discharged rearward toward the rear bowl surface 8 from between the opening rear wall 34c. As shown in FIGS. 1 and 10, the flow of cleaning water discharged from the water discharge opening 34 is indicated by an arrow B. The wash water supplied from the first supply passage 38 is discharged so as to flow downward diagonally from the water discharge opening 34 along the inner upper wall 34e inclined downward from the horizontal to the left or right. .

  Since the angle between the left and right inner upper walls 34e is formed to be relatively small, in the second water discharge mode, the wash water discharged from the water discharge opening 34 is in a relatively narrow range near the center of the bowl surface 8. Water is discharged. Therefore, in the second water discharge mode, the wash water discharged from the water discharge opening 34 is a wash water having a relatively high instantaneous flow rate, but the wash water is left-side end 8b and right-side end of the bowl surface 8. The region around the center of the bowl surface 8 can be washed down without flowing out to the outside beyond both ends of the portion 8c.

In this manner, the relatively high instantaneous flow rate of washing water discharged from the water discharge opening 34 flows into the discharge port 10. Wash water with a relatively high instantaneous flow rate passes through a drain trap pipe (not shown) downstream of the discharge port 10 and flows further toward the downstream drain pipe (not shown). Water flows while washing the drain trap pipe and drain pipe, removing urine in these pipes and removing foreign substances such as pubic hair, washing away urinary stones and foreign substances, suppressing bacterial growth, Adhesion (generation) can be suppressed. By allowing the washing water to flow through the drain trap pipe and the drain pipe without leaving a long interval, it is possible to suppress the growth of bacteria that generate urine stones.
When the water discharge from the water discharge opening 34 of the spreader 28 is continued for a certain time, the control unit 32 closes the first on-off valve 22 to end the water discharge from the spreader 28, and the equipment protection cleaning operation (second water discharge) Mode).

Next, the effect of the urinal according to the above-described embodiment of the present invention will be described.
According to the urinal 1 according to the present embodiment described above, in the first water discharge mode, the low instantaneous flow rate and the high-speed cleaning water supplied from the second supply passage 40 collide with the collision wall 34b, and the high-speed cleaning water is By colliding with the collision wall 34 b, the water with a low instantaneous flow rate is discharged so as to spread over a wide range from one water discharge opening 34 to the left and right regions of the bowl surface 8. Therefore, the discharged washing water can be prevented from jumping out of the bowl surface 8 and can be washed over a wide range up to the left and right regions of the bowl surface 8.
In the second water discharge mode, the high instantaneous flow rate and the low-speed washing water supplied from the first supply passage 38 collide with the collision wall 34b, and the low-speed washing water collides with the collision wall 34b. Wash water is discharged from one water discharge opening 34 toward a relatively narrow central region of the bowl surface 8. Therefore, it is possible to prevent the discharged wash water from jumping out of the bowl surface 8 and to remove foreign matter such as discharge of urine and pubic hair from the drainage pipe of the urinal 1. It is possible to protect and clean the drainage piping. Therefore, the urinal 1 can be washed effectively.

  Further, in the urinal 1 according to the present embodiment, the wash water discharged from the water discharge opening 34 is prevented from being reflected and bounced off the bowl surface 8 to form a film-like flow along the bowl surface 8. be able to.

Further, in the urinal 1 according to the present embodiment, in the first water discharge mode, the low instantaneous flow rate and high-speed washing water supplied from the second supply passage 40 collides with the collision wall 34b, and the high-speed washing water collides. By colliding with the wall 34 b, the water with a low instantaneous flow rate is discharged so as to spread over a wide range from the water discharge opening 34 to the left and right regions of the bowl surface 8. Therefore, the discharged washing water can be prevented from jumping out of the bowl surface 8 and can be washed over a wide range up to the left and right regions of the bowl surface 8.
In the second water discharge mode, the high instantaneous flow rate and the low-speed washing water supplied from the first supply passage 38 collide with the collision wall 34b, and the low-speed washing water collides with the collision wall 34b. Wash water is discharged from the water discharge opening 34 toward a relatively narrow central region of the bowl surface 8. Therefore, it is possible to prevent the discharged wash water from jumping out of the bowl surface 8 and to remove foreign matter such as discharge of urine and pubic hair from the drainage pipe of the urinal 1. It is possible to protect and clean the drainage piping. Therefore, the urinal 1 can be washed effectively.

Further, in the urinal 1 according to the present embodiment, in the first water discharge mode, the flow rate switching unit 50 causes the flush water in the common water supply pipe 42 to have a low instantaneous flow rate, and the cross-sectional area changing unit 46 flushes the common supply passage 44. The flow rate of water can be made relatively high, and the wash water in the common supply passage 44 can be supplied at a low instantaneous flow rate and at a high speed with a relatively simple structure by using the common common water supply pipe 42 and the common supply passage 44. Can be.
In the second water discharge mode, the flow rate switching means 50 can make the wash water in the common water supply pipe 42 have a high instantaneous flow rate, and the cross-sectional area changing means 46 can make the flow rate of the wash water in the common supply passage 44 relatively low. The cleaning water in the common supply passage 44 can have a high instantaneous flow rate and a low speed.
Therefore, either the first water discharge mode or the second water discharge mode can be executed with a relatively simple structure using the common common water supply pipe 42 and the common supply passage 44.

  Further, in the urinal 1 according to the present embodiment, the control unit 32 executes the first water discharge mode when the user uses the urinal 1, and cleans the urinal flush over a wide area up to the left and right regions of the bowl surface 8. It can be performed. Further, the control unit 32 can execute the second water discharge mode every time a predetermined time elapses, separately from when the user uses the urinal 1, and discharge of urine from the drainage pipe of the urinal 1 Foreign matter such as pubic hair can be removed, and equipment protection cleaning of the drainage pipe of the urinal 1 can be performed.

DESCRIPTION OF SYMBOLS 1 Urinal 2 Urinal body 6 Storage chamber 7 Front surface 8 Bowl surface 8a Front portion 14 Main water supply pipe 16 First water supply pipe 18 Second water supply pipe 20 First flow rate adjustment device 22 First on-off valve 24 Second flow rate adjustment device 26 Second open / close valve 28 Spreader 32 Control unit 34 Water discharge opening 34a Water discharge opening upper wall 34b Collision wall 34c Water discharge opening rear wall 34d Open passage 34e Inner upper wall 34f Outer upper wall 38 First supply passage 38a First outlet 40 Second Supply passage 40a Second outlet 42 Common water supply pipe 44 Common supply passage 46 Cross sectional area changing means 48 Water supply passage 50 Flow rate switching means A Flow of cleaning water B Flow of cleaning water A1 Angle A2 Angle C1 Cross sectional area C2 Cross sectional area D1 Inner diameter D2 Inner diameter

Claims (5)

A urinal for washing the bowl with washing water,
The bowl part receiving urine,
A water discharge device that is provided in an upper region in the bowl portion and discharges wash water to the bowl portion,
The water discharge device
One water discharge opening that opens from the bottom of itself to the left-right direction;
A supply passage for supplying cleaning water into the water discharge opening;
A collision wall provided inside the water discharge opening and formed so that the wash water supplied from the supply passage collides and spreads to the left and right, and
A first water discharge mode for supplying a low instantaneous flow rate and high-speed washing water from the supply passage;
A urinal characterized by executing either one of a second water discharge mode for supplying a high instantaneous flow rate and low-speed washing water from the supply passage.   2. The urinal according to claim 1, wherein the water discharge opening is formed so that an inclination angle of the bowl portion with respect to a bowl surface is within a range of 5 degrees to 25 degrees. The supply passage of the water discharge device is
A first supply passage for supplying cleaning water to the water discharge opening, and a second supply passage for supplying cleaning water to the water discharge opening,
further,
A main flow path for supplying cleaning water from a water supply source;
A first water supply passage for supplying cleaning water to the first supply passage;
A second water supply passage for supplying cleaning water to the second supply passage;
A first flow rate adjusting means provided in the first water supply passage for adjusting an instantaneous flow rate of the wash water in the first water supply passage;
A second flow rate adjusting means provided in the second water supply passage, for adjusting the instantaneous flow rate of the wash water in the second water supply passage so as to be lower than the instantaneous flow rate of the wash water in the first water supply passage;
Switching that can supply the wash water from the main flow path to either the first water supply passage or the second water supply passage so that one of the first water discharge mode and the second water discharge mode can be executed. Means and
The flow passage cross-sectional area of at least one of the second supply passage and the second water supply passage is formed smaller than the flow passage cross-sectional area of the first supply passage and the first water supply passage. Or the urinal of 2. The water discharge device further includes a cross-sectional area changing means capable of changing a flow path cross-sectional area of the supply passage,
further,
A water supply passage for supplying cleaning water from a water supply source;
A flow rate switching means provided in the water supply passage and capable of switching the instantaneous flow rate of the cleaning water in the water supply passage between a low instantaneous flow rate and a high instantaneous flow rate;
In the first water discharge mode, the flow rate switching means switches the wash water in the water supply passage to a low instantaneous flow rate, the cross-sectional area changing means changes the cross-sectional area of the supply passage relatively small, and Make the flow rate of washing water relatively high,
In the second water discharge mode, the flow rate switching means switches the cleaning water in the water supply passage to a high instantaneous flow rate, the cross-sectional area changing means changes the cross-sectional area of the supply passage relatively large, The urinal according to claim 1 or 2, wherein the flow rate of the washing water is relatively low.   Further, the first water discharge mode is executed when the user uses the urinal, and the second water discharge mode is controlled every time a predetermined time elapses separately from when the user uses the urinal. The urinal of any one of Claims 1 thru | or 4 provided with the control part to perform.

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