JP7058828B2 - Drainage device - Google Patents

Description

The present invention relates to a drainage device, and more particularly to a drainage device provided at the bottom of a water receiving portion.

Conventionally, as shown in Patent Document 1, a drainage device provided on the bottom surface of a sink and provided with an ultrasonic transmitter has been known. In this drainage device, when the user tries to clean the drainage part of the drainage device, the user turns on and operates the switch of the operation part. When the operation unit is turned on, the drain valve of the drainage unit is closed and the water supply valve is opened to supply water to the drainage unit. Ultrasonic cleaning is performed with water stored in the drainage section, and dirt inside the drainage section is cleaned.

Further, as shown in Patent Document 2, a drainage device provided on the bottom surface of a sink and provided with an ultrasonic transmitter is known. In this drainage device, when the user performs ultrasonic cleaning, the user presses an operation button on the operation unit to close the drainage hole of the drainage device. When water is flushed into the sink with the drain holes closed, the water is stored in the drain container of the drain device. Ultrasonic cleaning is performed with water stored in the drainage container to clean the dirt inside the drainage section.

Japanese Unexamined Patent Publication No. 2004-324108 JP-A-2007-285097

However, in the conventional drainage device as described above, water is used in the sink which is the water receiving part in the state where the drainage valve and the drainage hole are closed and water is stored in the drainage part (for example, in the state of being ultrasonically cleaned). If this is the case, the water will flow from the water receiving part to the draining part, but if the user does not operate the operating part, there is a concern that the water will overflow from the draining part to the water receiving part. For this reason, there is a problem that the use of water in the water receiving portion is substantially restricted during ultrasonic cleaning, and the usability of the drainage device is significantly reduced.
Furthermore, in the drainage section, the more water is stored up to a water level higher than the sealed water level and the ultrasonic cleaning is performed up to the upper part of the drainage section, the more easily the water overflows from the drainage section to the water receiving section, and the water becomes more likely to overflow. The problem is the backflow that overflows from the drainage section to the water receiving section.

Therefore, the present invention achieves both improvement of ultrasonic cleaning performance of ultrasonic cleaning up to a predetermined water level higher than the sealing water level and prevention of backflow in which water in the main body overflows from the inlet portion to the water receiving portion. The purpose is to suppress clogging of dirt in the second drainage channel and to suppress deterioration of the discharge performance of the second drainage channel.

In order to solve the above-mentioned problems, the present invention is a drainage device provided at the bottom of the water receiving portion, which is provided with an inlet portion opened on the water receiving portion side and forms a water seal inside itself. It includes a main body, an ultrasonic oscillator that oscillates ultrasonic waves in water in the main body, and an outlet flow path provided on the downstream side of the main body, and the main body has a first drainage flow path and a first drainage flow path. The first drainage flow path includes an ascending flow path and a descending flow path provided on the downstream side of the ascending flow path, and the ascending flow path and the descending flow path are provided. The top of the space is configured to define a predetermined water level equal to or lower than the height of the inlet, and the first drainage channel is such that the water level in the main body does not exceed the predetermined water level. The second drainage channel functions to drain the water in the channel to the outlet channel, and the second drainage channel is configured to regulate the sealed water level in the main body and is a throttle that narrows a part of the channel. The second drainage channel is formed so as to have a larger channel resistance than the first drainage channel, and the second drainage channel exceeds the drainage amount per unit time of the throttle section. When the inflow amount of water per unit time flows into the main body, the water level in the main body should be raised to at least the predetermined water level higher than the sealed water level and defined by the first drainage channel. It is characterized by functioning in.
By diligent research, the inventors of the present invention are formed so as to have a larger flow path resistance than the first drainage channel and the first drainage channel, unlike the drainage device as in Patent Documents 1 and 2. With a drainage device that has a main body with a second drainage channel, the ultrasonic cleaning performance is improved to perform ultrasonic cleaning up to a predetermined water level higher than the sealed water level, and the water inside the main body flows from the inlet to the water receiving part. We considered achieving both prevention of overflowing backflow. However, if the second drainage channel is simply formed so as to have a larger channel resistance than the first drainage channel, the second drainage channel is likely to be clogged with dirt and the second drainage channel is discharged. There is a concern that performance will deteriorate.
In the present invention configured as described above, the first drainage channel drains the water in the first drainage channel to the outlet channel so that the water level in the main body does not exceed the predetermined water level. It works like this. As a result, it is possible to prevent the water level in the main body from exceeding the predetermined water level and the water in the main body from overflowing from the inlet to the water receiving portion. Further, in the second drainage channel, when a predetermined flow rate of water flows into the main body, the water level in the main body is higher than the sealed water level and the predetermined water level is defined by the first drainage channel. Works to at least raise up to. As a result, in a state where the water level in the main body is automatically raised to a predetermined water level, ultrasonic cleaning can be performed by an ultrasonic oscillator to a predetermined water level higher than the sealed water level. In the main body portion that functions in this way, the second drainage flow path includes a throttle portion that narrows a part of the flow path. If the throttle portion is provided over the entire second drainage flow path, there are many portions where dirt is likely to be clogged, so that dirt is likely to be clogged in the second drainage flow path, and the dirt discharge performance is deteriorated. According to the present invention, when a predetermined flow rate of water flows into the main body portion, the water level in the main body portion can be easily raised by the throttle portion that squeezes a part of the flow path, and dirt is easily clogged. The throttle portion can be formed in a part of the second drainage channel, clogging of dirt in the second drainage channel can be suppressed, and deterioration of the discharge performance of the second drainage channel can be suppressed. Therefore, according to the present invention, both improvement of ultrasonic cleaning performance of ultrasonic cleaning up to a predetermined water level higher than the sealing water level and prevention of backflow in which water in the main body overflows from the inlet portion to the water receiving portion are achieved at the same time. While doing so, it is possible to suppress clogging of dirt in the second drainage channel and suppress deterioration of the drainage performance of the second drainage channel.

In the present invention, preferably, the throttle portion of the second drainage channel is provided in the middle of the second drainage channel.
In the present invention configured as described above, the throttle portion of the second drainage channel is provided in the middle of the second drainage channel. As a result, the narrowing portion of the second drainage flow path can be narrowed down at a portion other than the inlet and the outlet where dirt is likely to adhere. Therefore, a throttle portion that is easily clogged with dirt can be formed in a part of the middle of the second drainage channel, and clogging of dirt in the second drainage channel can be further suppressed, resulting in deterioration of the discharge performance of the second drainage channel. Can be further suppressed.

In the present invention, preferably, the main body portion further forms an intrusion suppressing portion that forms a plurality of holes at the inlet portion of the second drainage flow path and suppresses dirt from entering the second drainage flow path. I have.
In the present invention configured as described above, an intrusion suppressing portion that forms a plurality of holes and suppresses the intrusion of dirt is formed at the inlet portion of the second drainage flow path. Therefore, the intrusion suppression unit can suppress the intrusion of relatively large dirt and can relatively increase the total cross-sectional area of the flow path by the plurality of holes, and compare the amount of drainage per unit time of the second drainage flow path. It can be made larger. Therefore, clogging of dirt in the second drainage channel can be further suppressed, and deterioration of the drainage performance of the second drainage channel can be further suppressed.

In the present invention, preferably, the flow path cross-sectional area of each of the plurality of holes of the intrusion suppression portion is smaller than the flow path cross-sectional area of the throttle portion of the second drainage flow path, and the above-mentioned The minimum width of the throttle portion of the second drainage channel is equal to or larger than the minimum width of each hole.
In the present invention configured as described above, the flow path cross-sectional area of each of the plurality of holes of the intrusion suppression portion is smaller than the flow path cross-sectional area of the throttle portion of the second drainage flow path. The size of the dirt flowing into the second drainage flow path is smaller than the flow path cross-sectional area of each of the plurality of holes in the intrusion suppression portion, and further smaller than the flow path cross-sectional area of the throttle portion. Further, the minimum width of the throttle portion of the second drainage channel is not less than the minimum width of each hole, and the dirt flowing into the second drainage channel is mainly larger than the minimum width of each hole. Therefore, the invaded dirt can easily pass through the throttle portion of the second drainage flow path. As a result, clogging of dirt in the second drainage channel can be further suppressed, and deterioration of the drainage performance of the second drainage channel can be further suppressed.

In the present invention, preferably, the flow path cross section of the inlet portion of the second drainage flow path is formed in a flat shape, and the long side portion of the flow path cross section of the inlet portion of the second drainage flow path is the above. It is arranged on the first drainage channel side.
In the present invention configured as described above, even when the flow path cross-sectional area of the inlet portion of the second drainage flow path is relatively large, the long side portion of the flat flow path cross section is on the first drainage flow path side. By arranging in, the expansion of the second drainage channel from the first drainage channel to the outside is suppressed while maintaining the size of the first drainage channel, and the increase in the size of the entire drainage device is suppressed. Can be done. Therefore, the drainage device can be formed relatively compactly.

In the present invention, preferably, the cross section of the second drainage channel is changed from a flat shape to a square shape between the inlet portion and the throttle portion.
In the present invention configured as described above, the cross section of the second drainage channel is changed from the flat shape to the square shape between the inlet portion and the throttle portion.
Therefore, the cross section of the flow path of the throttle portion can be made closer to a square, and the minimum value of the height and width of the flow path can be formed relatively large while forming the throttle portion, and the clogging of the throttle portion can be further reduced. It can be suppressed, and the deterioration of the discharge performance of the second drainage channel can be further suppressed.

In the present invention, preferably, the throttle portion of the second drainage flow path is arranged lower than the top portion defining the sealed water level and upstream of the top portion.
In the present invention configured as described above, since the squeezed portion is arranged lower than the top that defines the sealing water level and upstream of the top, the squeezed portion is arranged in the sealed water. Therefore, it is possible to prevent dirt from adhering to the throttle portion.

In the present invention, preferably, the second drainage flow path is provided on the downstream side of the first inclined portion and the first inclined portion that rises in the upstream portion thereof, and has an inclination smaller than that of the first inclined portion. The second inclined portion is provided, and the throttle portion of the second drainage flow path is arranged on the second inclined portion.
In the present invention configured as described above, since the throttle portion of the second drainage flow path is arranged on the second inclined portion that rises with an inclination smaller than that of the first inclined portion, the water level in the main body portion is a predetermined water level. Even when the amount of drainage drained from the second drainage channel decreases or the end of drainage is approaching, the head pressure gradually decreases, and the water head pressure gradually decreases. It is possible to prevent the dirt on the side from flowing down to the throttle portion along the second inclined portion. Therefore, it is possible to further prevent the throttle portion from being clogged with dirt. Further, even when the water level in the main body drops from the predetermined water level, the head pressure gradually decreases, the amount of drainage discharged from the second drainage channel decreases, or the end of drainage is approaching, the second drainage is performed. Since the flow path has a second inclined portion that rises with an inclination smaller than that of the first inclined portion, drainage from the second inclined portion of the second drainage flow path is easily continued, and dirt is discharged from the second inclined portion. It can be easily discharged to the flow path. Therefore, clogging of dirt in the second drainage channel can be further suppressed.

In the present invention, preferably, the second drainage flow path is formed so that the width of the flow path from the inlet portion to the throttle portion is gradually reduced.
In the present invention configured as described above, the second drainage channel is formed so that the width of the channel from the inlet portion to the throttle portion is gradually reduced, and thus the inside of the second drainage channel is formed. The dirt that flows into the water can flow relatively smoothly along the width of the flow path, which gradually becomes smaller.
Dirt can be less likely to be clogged in the second drainage channel. As a result, clogging of dirt in the second drainage channel can be further suppressed, and deterioration of the drainage performance of the second drainage channel can be further suppressed.

In the present invention, preferably, the throttle portion of the second drainage flow path is arranged on the downstream side of the intermediate portion between the inlet portion and the outlet portion of the second drainage flow path.
In the present invention configured as described above, since the throttle portion is arranged on the downstream side of the intermediate portion between the inlet portion and the outlet portion of the second drainage flow path, it is downstream of the throttle portion of the second drainage flow path. The amount of dirt returning to the throttle portion from the side can be relatively reduced, clogging of dirt in the second drainage channel can be further suppressed, and deterioration of the drainage performance of the second drainage channel can be further suppressed. Can be done.

According to the drainage device of the present invention, improvement of ultrasonic cleaning performance for ultrasonic cleaning up to a predetermined water level higher than the sealed water level and prevention of backflow of water in the main body from the inlet to the water receiving portion are achieved. While achieving both, it is possible to suppress clogging of dirt in the second drainage channel and suppress deterioration of the drainage performance of the second drainage channel.

It is a front view which looked at the faucet system provided with the drainage device by 1st Embodiment of this invention from the front. It is a side view which looked at the faucet system provided with the drainage device by 1st Embodiment of this invention from the side. It is sectional drawing seen along the line III-III of FIG. FIG. 3 is an enlarged cross-sectional view showing an enlarged view of the drainage device of FIG. It is sectional drawing seen along the VV line of FIG. It is sectional drawing seen along the VI-VI line of FIG. It is sectional drawing seen along the line VII-VII of FIG. It is sectional drawing seen along the line VIII-VIII of FIG. It is sectional drawing seen along the IX-IX line of FIG. It is a partially enlarged sectional view which shows the state which the water containing dirt has flowed in in the standby state of the drainage apparatus by 1st Embodiment of this invention. It is a partially enlarged sectional view which shows the state which the inflow of water started into the main body part of the drainage apparatus by 1st Embodiment of this invention. Further water flows into the main body of the drainage device according to the first embodiment of the present invention, and the inflowing water flows out to the outlet flow path through the second drainage flow path and in the rising portion of the first drainage flow path. It is a partially enlarged sectional view which shows the state which raises a water level. It is a partially enlarged cross-sectional view which shows the state which the water further flowed into the main body part of the drainage apparatus by 1st Embodiment of this invention, and the water level in a 1st drainage flow path reached a predetermined water level. The inflow of water into the main body of the drainage device according to the first embodiment of the present invention is stopped, and the water above the inlet of the second drainage flow path is discharged to the outlet flow path through the second drainage flow path. 1 It is a partially enlarged sectional view showing a state in which the water level in the drainage channel gradually decreases. From the state shown in FIG. 14, the water above the inlet of the second drainage channel is further discharged to the outlet channel through the second drainage channel, and the water level in the first drainage channel gradually decreases. It is a partially enlarged sectional view shown. It is a partially enlarged sectional view which shows the state which returned to the standby state after the completion of a series of washing operations in the drainage apparatus by 1st Embodiment of this invention. It is a side view which looked at the faucet system provided with the drainage device by 2nd Embodiment of this invention from the side. It is sectional drawing seen along the XVIII-XVIII line of FIG. It is sectional drawing seen along the XIX-XIX line of FIG.

Hereinafter, the drainage device according to the first embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a front view of a faucet system equipped with a drainage device according to the first embodiment of the present invention, and FIG. 2 is a side view of a faucet system equipped with a drainage device according to the first embodiment of the present invention. It is a side view seen from.
As shown in FIGS. 1 and 2, the drainage device 1 according to the first embodiment of the present invention is provided in the faucet system 2. The faucet system 2 is a kitchen system provided in the kitchen. The faucet system 2 may be a washbasin system, a bathroom system provided in the bathroom, or another system provided with a water receiving unit 6 to be described later in which water flows.

The faucet system 2 includes a faucet device 4 for supplying water and a water receiving unit 6 for receiving water supplied from the faucet device 4. The faucet device 4 discharges water, hot water, etc. supplied from a water supply source (not shown). The water receiving portion 6 is formed so as to discharge the water discharged from the faucet device 4 to the downstream side.

Next, the drainage device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 1, and FIG. 4 is an enlarged cross-sectional view showing the drainage device of FIG. 3 in an enlarged manner.
The drainage device 1 is provided at the bottom portion 6a of the water receiving portion 6. As shown in FIG. 4, the drainage device 1 includes a main body portion 8, and the main body portion 8 has an inlet portion 10 opened on the water receiving portion 6 side and a trap shape provided on the downstream side of the inlet portion 10. The first drainage flow path 12, which is a flow path, the second drainage flow path 26 branched from the first drainage flow path 12, and the dirt of a certain size are suppressed from entering the second drainage flow path 26. The intrusion suppression unit 30 is provided. The inlet portion 10 is formed by a part of the bottom portion 6a recessed below the bottom surface 6b. A water supply flow path different from the flow path from the water receiving portion 6 may be connected to the main body portion 8. Another water supply channel is connected to another water source (not shown). The water flowing into the main body 8 also includes water flowing into the main body 8 from a water supply flow path different from the water flow path from the water receiving portion 6. Further, the water flowing into the main body 8 includes water containing any one of detergent, shampoo, body soap, tableware stains, stains on the water receiving portion, and the like, for example, domestic wastewater.

The drainage device 1 further detects a lid 14 arranged so as to cover the upper part of the inlet portion 10, an ultrasonic oscillator 16 that oscillates ultrasonic waves to the water in the main body portion 8, and a water level in the main body portion 8. On the water level detection sensor 18, the control unit 20 that controls the operation of the ultrasonic oscillator 16, the outlet flow path 22 provided on the downstream side of the first drainage flow path 12 of the main body unit 8, and the flow path in the main body unit 8. It is provided with a mesh cage 24 that is provided and has a mesh.

The lid 14 is arranged side by side with the bottom surface 6b, and is arranged so as to form a continuous bottom surface with the bottom surface 6b. The lid 14 is formed with a hole (not shown) into which a small object such as water or dust flows.
The ultrasonic oscillator 16 is provided below the inlet portion 10 in the main body portion 8. The ultrasonic oscillator 16 is electrically connected to the control unit 20.
The water level detection sensor 18 is provided in the vicinity of the inlet portion 10 and can detect the water level that has risen to the inlet portion 10. The water level detection sensor 18 is electrically connected to the control unit 20.
The control unit 20 has a built-in CPU, memory, etc., has a function of receiving a water level detection signal transmitted from the water level detection sensor 18, and operates the ultrasonic oscillator 16 based on a predetermined control program or the like stored in the memory. To control.

The net cage 24 is formed so as to cover the entire flow path on the lower side of the inlet portion 10. The net cage 24 is arranged on the lower side of the inlet portion 10 inside the recess recessed below the bottom portion 6a. The upper end of the net cage 24 is arranged at the entrance portion 10. The net cage 24 is designed to allow water to pass through the net cage 24 without allowing small objects such as dust to pass through the net cage 24.

The outlet flow path 22 is connected to the downstream end of the first drainage flow path 12 and extends downward in the vertical direction. The outlet flow path 22 is further connected to a drainage pipe (not shown) on the downstream side. A part of the outlet flow path 22 may be formed by the main body portion 8.

The intrusion suppression portion 30 is formed at the inlet portion 26a of the second drainage flow path 26. The intrusion suppressing portion 30 forms a plurality of through holes 32 in the plate-shaped body. The intrusion suppressing unit 30 can suppress the intrusion of dirt of a certain size and shape (for example, dirt in the form of a small object) and limit the size of the dirt passing through. The intrusion suppression portion 30 may be formed in a network structure. The intrusion suppression portion 30 is arranged at the inlet portion 26a of the second drainage flow path 26 and is arranged substantially flush with the bottom surface of the first drainage flow path 12. The plurality of through holes 32 each form a square square hole. The through hole 32 may have another shape such as a circular shape or a drum shape.

Next, the first drainage flow path 12 and the second drainage flow path 26 of the drainage device according to the first embodiment of the present invention will be described with reference to FIGS. 4 to 9.
The first drainage flow path 12 of the main body 8 of the drainage device 1 has a connection portion 12a connected below the inlet portion 10 and an ascending flow path that rises diagonally upward toward the downstream side so as to form a drainage trap. The first drainage channel rising portion 12b, the top portion 12c which is a folded portion connecting the first drainage channel rising portion 12b of the drain trap between the first drainage channel rising portion 12b and the lowering portion 12d, and the first drainage channel rising portion 12b. It is provided on the downstream side of the first drainage flow path rising portion 12b and is provided with a descending portion 12d which is a descending flow path descending from the top portion 12c. The descending portion 12d is connected to the outlet flow path 22.

The first drainage flow path 12 is a trap-shaped flow path that folds back from the first drainage flow path rising portion 12b toward the descending portion 12d. The first drainage channel rising portion 12b is formed so as to rise diagonally toward the downstream side. The lowering portion 12d is connected to the downstream end of the first drainage channel rising portion 12b and is formed so as to extend substantially downward in the vertical direction. A sealing water is formed in the connecting portion 12a, the first drainage channel rising portion 12b, and the second drainage channel 26 inside the main body portion 8 as described later, and the sealing water level W2 (see FIG. 10) is defined. Further, the first drainage flow path 12 is configured such that a predetermined water level W1 (see FIG. 13) equal to or lower than the height of the inlet portion 10 is defined by the top portion 12c of the trap-shaped flow path. The predetermined water level W1 is defined at a position higher than the bottom surface of the net cage 24, for example, the upper portion of the mesh cage 24. The predetermined water level W1 may be defined above the net cage 24. Since the top portion 12c of the first drainage flow path 12 is provided at the height of the inlet portion 10 of the main body portion 8, the predetermined water level W1 defined by the first drainage flow path 12 is the inlet portion 10 of the main body portion 8. It is said to be high. The first drainage flow path 12 is formed in a first flow path cross-sectional area D1 so that a first drainage amount per unit time larger than the second drainage amount per unit time, which will be described later, can be drained to the outlet flow path 22. .. The first flow path cross-sectional area D1 is the smallest flow path cross-sectional area among the flow path cross-sections of the first drainage flow path 12.

The second drainage flow path 26 is a bypass extending from the inlet portion 26a of the second drainage flow path 26 provided on the upstream side of the top portion 12c of the first drainage flow path 12 to the outlet portion 26b provided on the downstream side of the top portion 12c. Form a flow path. The second drainage flow path 26 is the highest between the second drainage flow path rising portion 26h, which is an ascending flow path that rises diagonally upward from the inlet portion 26a toward the downstream side, and the inlet portion 26a and the outlet portion 26b. It is provided with a top portion 26c that forms a portion and forms a folded portion, and a second drainage flow path lowering portion 26i that is provided on the downstream side of the second drainage flow path rising portion 26h and is a descending flow path that descends from the top portion 26c. ing.

The inlet portion 26a of the second drainage channel 26 is connected to the lower surface of the first drainage channel rising portion 12b of the first drainage channel 12. The inlet portion 26a is located at the height of the lower bottom portion of the inlet portion 10 of the main body portion 8. The outlet portion 26b of the second drainage flow path 26 is connected to the side wall of the outlet flow path 22. The outlet portion 26b is formed at a position lower than the top portion 12c. The outlet portion 26b may be connected to the side wall of the descending portion 12d of the first drainage flow path 12. The inlet portion 26a constitutes the lowest portion of the flow path of the second drainage flow path 26. The inlet portion 26a is arranged at substantially the same height as the bottom surface of the connection portion 12a. The inlet portion 26a is arranged at substantially the same position as or close to the inlet portion of the first drainage flow path 12. The second drainage flow path 26 forms a second drainage flow path rising portion 26h, which is an ascending flow path that rises diagonally upward from the inlet portion 26a to the outlet portion 26b.

The second drainage channel 26 forms a top portion 26c that forms the highest portion between the inlet portion 26a and the outlet portion 26b and forms a folded portion. The second drainage channel 26 defines the sealed water level according to its shape and arrangement. Specifically, the second drainage channel 26 is configured so that the top portion 26c defines the sealed water level W2 (see FIG. 12) in the main body portion 8. The second drainage channel 26 may be configured to define the sealed water level W2 by, for example, an intermediate portion of the second drainage channel 26 or an outlet thereof forming the highest portion of the channel. Further, the sealed water level W2 may be defined by a configuration other than the second drainage channel 26. The sealed water level W2 is defined below the net cage 24. The sealed water level W2 is located near the center or the lower portion of the first drainage flow path rising portion 12b, and is located near the center or the lower portion of the main body portion 8. The top 26c of the second drainage channel 26 is provided at a height lower than the top 12c of the first drainage channel 12.

Further, the second drainage flow path rising portion 26h of the second drainage flow path 26 is provided on the downstream side of the first inclined portion 26f and the first inclined portion 26f that rise on the upstream side portion thereof, and the first inclined portion. It is provided with a second inclined portion 26g that rises with an inclination smaller than 26f. That is, the angle formed by the second inclined portion 26g with respect to the horizontal direction is smaller than the angle formed by the first inclined portion 26f with respect to the horizontal direction. The first inclined portion 26f has an inclination close to the inclination of the first drainage flow path 12. The throttle portion 28 of the second drainage flow path 26 is arranged on the second inclined portion 26g. The throttle portion 28 is also formed at the boundary portion between the first inclined portion 26f and the second inclined portion 26g.

Further, the second drainage channel lowering portion 26i of the second drainage channel 26 includes a third inclined portion 26m provided on the downstream side of the second inclined portion 26g and inclined downward toward the downstream side. ..

Further, the second drainage flow path 26 is generally sandwiched between the first drainage flow path rising portion 12b of the first drainage flow path 12, the descending portion 12d of the first drainage flow path 12, and the outlet flow path 22. It is provided in the triangular space J. The second drainage channel 26 is arranged so as to overlap the first drainage channel 12 in a top view, and the second drainage channel 26 is formed inside the first drainage channel 12 in the left-right direction. The second drainage flow path 26 rises along the first drainage flow path rising portion 12b in the space J below the first drainage flow path 12, and then extends laterally toward the outlet flow path 22 on the downstream side. There is.

The second drainage flow path 26 further includes a throttle portion 28 for narrowing a part of the flow path. The throttle portion 28 of the second drainage flow path 26 is provided in the middle of the second drainage flow path 26. Further, the throttle portion 28 of the second drainage flow path 26 is arranged on the downstream side of the intermediate portion 26d between the inlet portion 26a and the outlet portion 26b of the second drainage flow path 26. The intermediate portion 26d may be defined as an intermediate portion including an intermediate position between the entrance portion 26a and the exit portion 26b in the top view, and the intermediate height position between the entrance portion 26a and the exit portion 26b in the side view. It may be defined as an intermediate portion including, or may be defined as an intermediate portion including an intermediate position of the distance between the inlet portion 26a and the outlet portion 26b. The throttle portion 28 of the second drainage flow path 26 is arranged lower than the top portion 26c that defines the sealed water level W2 and upstream of the top portion 26c. The upper end 28a (see FIG. 7) of the throttle portion 28 is also arranged at a position lower than the top portion 26c.

The height of the flow path from the inlet portion 26a of the second drainage flow path 26 to immediately before the throttle portion 28 is a substantially constant height H1. The height of the flow path of the throttle portion 28 of the second drainage flow path 26 is a height H2 lower than the height H1. The height of the flow path from the downstream side of the throttle portion 28 of the second drainage flow path 26 to the outlet portion 26b is a substantially constant height H1. The rate of change in the height of the flow path of the throttle portion 28 with respect to the height of the flow path of the inlet portion 26a of the second drainage flow path 26 is calculated by H2 / H1 = C1.

As shown in FIG. 5, the cross section of the inlet portion 26a of the second drainage channel 26 is formed in a flat shape. The cross section of the flow path of the inlet portion 26a has a rectangular shape. The long side portion 26e of the flow path cross section of the inlet portion 26a of the second drainage flow path 26 is arranged on the first drainage flow path 12 side, and the flow of the first drainage flow path rising portion 12b of the first drainage flow path 12 It extends parallel to the lower surface 12e, which is the long side portion of the road cross section. The second drainage flow path 26 is formed so that the width of the flow path from the inlet portion 26a to the throttle portion 28 gradually decreases. The second drainage flow path 26 is formed so that the width of the flow path becomes large again on the downstream side of the throttle portion 28. The width B2 of the flow path of the inlet portion 26a of the second drainage flow path 26 is larger than the width B3 of the flow path of the intermediate portion 26d between the inlet portion 26a of the second drainage flow path 26 and the throttle portion 28. The width B2 of the flow path of the inlet portion 26a of the second drainage flow path 26 is larger than the width B4 of the flow path of the throttle portion 28. The width B3 of the flow path of the intermediate portion 26d is larger than the width B4 of the flow path of the throttle portion 28. The width B5 of the flow path on the downstream side of the throttle portion 28 is substantially the same as the width B2 of the flow path of the inlet portion 26a. The rate of change in the width of the flow path of the throttle portion 28 with respect to the width of the flow path of the inlet portion 26a of the second drainage flow path 26 is calculated by B4 / B2 = C2. The change rate C1 of the height of the flow path from the inlet portion 26a to the throttle portion 28 of the second drainage flow path 26 is larger than the change rate C2 of the width. That is, the rate of change in the width of the channel is larger than the rate of change in the height of the channel.

The cross section of the second drainage channel 26 is changed from the flat shape to the square shape between the inlet portion 26a and the throttle portion 28. In the second drainage flow path 26, the width B4 of the flow path and the height H2 of the flow path are substantially the same in the throttle portion 28, forming a substantially square-shaped flow path cross section. The throttle portion 28 may form a circular flow path cross section.

The second drainage flow path 26 is formed in the throttle portion 28 in a second flow path cross-sectional area D2 so that the second drainage amount can be drained to the outlet flow path 22 per unit time. The second flow path cross section D2 is the smallest flow path cross section of the flow path cross sections of the second drainage flow path 26. The second flow path cross section D2 of the second drainage flow path 26 is smaller than the first flow path cross section D1 of the first drainage flow path 12. Therefore, the second drainage flow path 26 is formed by the throttle portion 28 so as to have a larger flow path resistance than the first drainage flow path 12. The second drainage channel 26 is the main body 8 when the inflow amount of water per unit time that exceeds the second drainage amount per unit time of the throttle portion 28 of the second drainage channel 26 flows into the main body 8. It functions to raise the water level in the water level to at least a predetermined water level W1 higher than the sealed water level W2 and defined by the first drainage channel 12.

The angle α2 formed by the straight line G connecting the lowermost portion 26k and the uppermost portion 26l on the lower surface 26j of the second drainage channel rising portion 26h of the second drainage channel 26 with respect to the horizontal line I extending in the horizontal direction is the first drainage flow. The straight line H connecting the lowermost portion 12g and the uppermost portion 12h on the lower surface 12e of the first drainage channel rising portion 12b of the road 12 is smaller than the angle α1 formed with respect to the horizontal line I extending in the horizontal direction. The lowermost portion 26k is located on the most upstream side of the second drainage channel 26, and the uppermost portion 26l is located on the uppermost portion 26c. The lowermost portion 12g is located on the most upstream side of the first drainage channel rising portion 12b, and the uppermost portion 12h is located on the uppermost portion 12c.

The length L2 of the flow path from the lowermost part 26k to the uppermost part 26l on the lower surface 26j of the second drainage flow path rising portion 26h of the second drainage flow path 26 is the first drainage flow path rising portion of the first drainage flow path 12. The length of the flow path from the lowermost portion 12g to the uppermost portion 12h on the lower surface 12e of 12b is shorter than the length L1.

The flow path cross-sectional area D3 (see FIG. 6) of each through-hole 32 among the plurality of through-holes 32 of the intrusion suppression portion 30 is from the second flow path cross-sectional area D2 of the throttle portion 28 of the second drainage flow path 26. Is also small. Further, the minimum width B4 in the left-right direction of the flow path of the throttle portion 28 of the second drainage flow path 26 is equal to or larger than the minimum width B1 in the left-right direction of the flow path of each through hole 32. When the through hole 32 is circular, the width B1 of the through hole 32 is defined by the diameter.

The first drainage flow path 12 and the second drainage flow path 26 serve as drainage means for draining the water flowing into the main body portion 8 to the outlet flow path 22 so that the water level in the main body portion 8 does not exceed the predetermined water level W1. Function. At least the first drainage channel 12 functions to drain the water in the first drainage channel 12 to the outlet channel 22 so that the water level in the main body 8 does not exceed the predetermined water level W1. When the water level in the main body 8 reaches the predetermined water level W1 by the first drainage flow path 12 and the second drainage flow path 26, the drainage means per unit time of water flowing out from the main body portion 8 to the outlet flow path 22. The amount of drainage of the water is formed to be equal to or larger than the amount of water flowing into the main body 8 per unit time. The drainage means is such that the water level in the main body 8 reaches the predetermined water level W1 by the first drainage flow path 12 and the second drainage flow path 26, and the amount of water flowing into the main body 8 exceeds the second drainage amount. It is formed so as to maintain the water level in the main body 8 at a predetermined water level W1 while the water is further inflowing. The state in which the water level in the main body 8 is maintained at the predetermined water level W1 is a state in which the fluctuation of the water level in the main body 8 is suppressed. The state of maintaining the water level in the main body 8 at the predetermined water level W1 includes a state of trying to maintain the water level in the main body 8 at the predetermined water level W1, and even if the water level in the main body 8 fluctuates slightly, the main body It includes a state in which the water level in the section is generally maintained in the vicinity of the predetermined water level W1.

Further, in the first drainage channel 12 and the second drainage channel 26, the water level in the main body 8 is raised by the water flowing into the main body 8 from the sealed water level W2 in the first drainage channel rising portion 12b. It functions as a water level raising means for raising the water level to a predetermined water level W1 which is high and equal to or lower than the height of the inlet portion 10. At least the second drainage channel 26 seals the water level in the main body 8 when the inflow amount of water per unit time exceeding the second drainage amount per unit time of the throttle 28 flows into the main body 8. It functions to be higher than the water level W2 and at least rise to a predetermined water level W1. This water level raising means flows into the main body 8 while the water level in the main body 8 is raised to a predetermined water level W1 and higher than the sealed water level W2 by the first drainage flow path 12 and the second drainage flow path 26. The amount of drainage per unit time of water flowing out from the main body 8 to the outlet flow path 22 is made smaller than the inflow amount of water per unit time, and the main body while letting the water flowing into the main body 8 flow out to the outlet flow path 22. It is formed so as to raise the water level in the portion 8.

Next, the operation (action) of the drainage device according to the first embodiment of the present invention described above will be described with reference to FIGS. 10 to 16.
FIG. 10 is a partially enlarged sectional view showing a state in which water containing dirt has flowed in in the standby state of the drainage device according to the first embodiment of the present invention, and FIG. 11 is a main body portion of the drainage device according to the first embodiment of the present invention. It is a partially enlarged sectional view which shows the state which the inflow of water has started, and FIG. FIG. 13 is a partially enlarged cross-sectional view showing a state in which the water is discharged to the outlet flow path and raises the water level in the rising portion of the first drainage flow path. FIG. 13 is a main body of the drainage device according to the first embodiment of the present invention. FIG. 14 is a partially enlarged cross-sectional view showing a state in which water further flows into the portion and the water level in the first drainage channel reaches a predetermined water level. FIG. 14 is a partially enlarged cross-sectional view of the drainage device according to the first embodiment of the present invention. It shows a state in which the inflow of water is stopped, the water above the inlet of the second drainage channel is discharged to the outlet channel through the second drainage channel, and the water level in the first drainage channel gradually decreases. It is a partially enlarged cross-sectional view, and FIG. 15 is a partially enlarged cross-sectional view. From the state shown in FIG. 14, water further above the inlet of the second drainage channel is discharged to the outlet channel through the second drainage channel, and the first drainage channel is shown. FIG. 16 is a partially enlarged cross-sectional view showing a state in which the water level in the water gradually decreases, and FIG. 16 is a partially enlarged cross-sectional view showing a state in which the drainage device according to the first embodiment of the present invention returns to the standby state after the completion of a series of cleaning operations. It is a figure. In FIGS. 10 to 16, the portion where water is stored in the main body is shown by a dotted line.

FIG. 10 shows a standby state before water is discharged from the faucet device 4. In the standby state, the water level in the main body 8 is the sealed water level W2 in the first drainage channel rising portion 12b and the connecting portion 12a of the first drainage channel 12, and the second drainage channel 26. Since the ceiling portion 12f between the connecting portion 12a and the first drainage flow path rising portion 12b is located below the sealed water level W2 (located below the top 26c), the outlet flow path 22 and the inlet are located in the standby state. The portion 10 is air-blocked, and the odor is surely prevented from rising from the outlet flow path 22 to the inlet portion 10. In the standby state, the faucet device 4 is in a state of being stopped, and the ultrasonic oscillator 16 is also in a state of being stopped. In the standby state, when the user flows water containing dirt E into the water receiving portion 6, this water flows into the main body portion 8. For example, as shown in FIG. 10, the dirt E is in a state of being attached to the connection portion 12a, the inlet portion 10, the net cage 24, and the like.

As shown in FIG. 11, when water is discharged from the faucet device 4, water flows into the inlet portion 10 from the bottom surface 6b of the water receiving portion 6 through the lid 14 as shown by the arrow F1. As shown by the arrow F2, the water flowing into the inlet portion 10 passes through the net cage 24 and further flows down. Then, as shown by the arrow F3, the water flowing down from the net cage 24 is supplied into the connection portion 12a of the first drainage flow path 12. As shown by the arrow F4, the water supplied into the connection portion 12a of the first drainage flow path 12 flows from the intrusion suppression portion 30 into the inlet portion 26a of the second drainage flow path 26. Since a plurality of through holes 32 are formed in the intrusion suppressing portion 30, the intrusion of dirt E having a relatively large shape into the second drainage channel 26 is suppressed. On the other hand, the intrusion suppressing unit 30 can make the total of the cross-sectional areas of the flow paths (the total of each opening area) relatively large by the plurality of through holes 32. Therefore, the amount of drainage per unit time of the second drainage channel 26 can be relatively large. Therefore, clogging of dirt E in the second drainage channel 26 can be further suppressed, and deterioration of the drainage performance of the second drainage channel 26 can be further suppressed.

As shown by the arrow F5, the water flowing into the inlet portion 26a of the second drainage flow path 26 rises in the first inclined portion 26f and passes through the throttle portion 28. As shown by the arrow F6, the water that has passed through the throttle portion 28 rises along the second inclined portion 26g, exceeds the top portion 26c, and reaches the outlet portion 26b. As shown by the arrow F7, the water flowing out from the outlet portion 26b is drained to the outlet flow path 22. The second drainage channel 26 can drain the second drainage amount to the outlet channel 22 per unit time.

When water with an inflow amount per unit time (or total inflow amount per fixed time) that exceeds the second drainage amount per unit time (or total drainage amount per fixed time) of the throttle portion 28 flows into the main body portion 8. Water cannot completely flow out from the second drainage channel 26 and is stored in the main body 8. Therefore, as shown by the arrow F8, the water flowing into the main body 8 is discharged to the outlet flow path 22 through the second drainage flow path 26 by the first drainage flow path 12 and the second drainage flow path 26. The water level in the connection portion 12a of the main body portion 8 and the first drainage channel rising portion 12b is automatically raised. At this time, the water level automatically rises without any user operation. Since the second drainage flow path 26 includes a throttle portion 28 for narrowing a part of the flow path, the second drainage amount per unit time can be suppressed to a relatively low level, and the first drainage flow path can be suppressed by a relatively small amount of water. The water level in the drainage channel rising portion 12b can be raised.

As shown by arrow F9 in FIG. 12, when water further flows into the main body 8, the water flowing into the main body 8 passes through the second drainage flow path 26 as shown by arrow F10. At the same time as flowing out to 22, the water level in the connecting portion 12a of the main body portion 8 and the first drainage channel rising portion 12b is raised as shown by the arrow F11.

As shown by the arrow F12 in FIG. 13, when water further flows into the main body 8, the water level in the first drainage channel rising portion 12b of the first drainage channel 12 becomes the top 12c of the first drainage channel 12. The water level is raised to the predetermined water level W1 specified by. When the water level in the first drainage channel 12 reaches the predetermined water level W1, the water flowing into the main body 8 flows into the outlet channel 22 via the second drainage channel 26 as shown by the arrow F13. At the same time as being discharged, it is discharged from the top 12c of the first drainage channel 12 to the descending portion 12d as shown by the arrow F14.

In FIG. 13, even if the water level in the first drainage channel 12 reaches the predetermined water level W1 and the water further flows into the main body 8 with an inflow amount exceeding the second drainage amount, the water level in the main body 8 is reached. Is maintained at a predetermined water level W1. At this time, the predetermined water level W1 is the height of the inlet portion 10 and is located at the upper part of the net cage 24. Therefore, a flow path portion at a height of 10 or less of the inlet portion 10 of the main body portion 8 to which dirt E is likely to adhere, for example, an inlet portion 10, a net cage 24, an inlet portion 26a of the second drainage flow path 26, an intermediate portion 26d, and a throttle. The portion 28, the intrusion suppressing portion 30, the connecting portion 12a of the first drainage channel 12, the first drainage channel rising portion 12b, the top portion 12c, and the like are generally immersed in water. The control unit 20 determines that the water level has reached the predetermined water level W1 in which the water level has risen to the inlet portion 10 by the water level detection sensor 18. By operating the ultrasonic oscillator 16 by the control unit 20 in a state where the water level is the predetermined water level W1, ultrasonic waves K can be oscillated almost all over the main body 8 to perform ultrasonic cleaning, and further, the main body 8 can be cleaned. Ultrasonic cleaning can be performed on the flow path portion to which dirt E is likely to adhere, for example, the inlet portion 10, the net cage 24, the intrusion suppression portion 30, the inlet portion 26a of the second drainage flow path 26, the throttle portion 28, and the like. ..

In this way, the water flowing into the main body 8 is drained to the outlet flow path 22 by the first drainage channel 12 and the second drainage channel 26 so that the water level in the main body 8 does not exceed the predetermined water level W1. I'm letting you. As a result, it is possible to prevent the water level in the main body 8 from exceeding the predetermined water level W1 and the water in the main body 8 from overflowing from the inlet 10 to the bottom surface 6b of the water receiving portion 6.
When the inflow amount of water per unit time that exceeds the second drainage amount per unit time of the second drainage flow path 26 continues to flow into the main body 8, the inflow amount per unit time is the second drainage flow path 26. The rise in the water level in the main body is controlled between the sealed water level W2 and the predetermined water level W1 as long as the total value of the second drainage amount per unit time and the first drainage amount per unit time of the first drainage channel 12 is not exceeded. can do. The total value of the second drainage amount per unit time of the second drainage channel 26 and the first drainage amount per unit time of the first drainage channel 12 is the total value of the faucet device 4 in the normal usage mode of the faucet device 4. The amount of water supplied from is set so as not to exceed this total value.

Further, in the present embodiment, it is not necessary to close the drain valve or the like provided in the user's conventional drainage flow path, and water is supplied to the main body 8 to supply the first drainage flow path 12 and the drainage flow path 12. Based on the configuration of the second drainage channel 26, the water level in the main body 8 automatically reaches the predetermined water level W1, and ultrasonic cleaning can be automatically performed up to the inlet 10 and the net cage 24 and the like.

In FIG. 13, as shown by the arrow F13, water flows into the second drainage channel 26 from the plurality of through holes 32 of the intrusion suppressing portion 30. Since the cross-sectional area of the flow path of each through-hole 32 among the plurality of through-holes 32 of the intrusion suppression portion 30 is smaller than the cross-sectional area of the flow path of the throttle portion 28 of the second drainage flow path 26, the second drainage flow path 26 The size of the dirt E flowing into the inside is made smaller than the cross-sectional area of the flow path of each through hole 32 among the plurality of through holes 32 of the intrusion suppressing portion 30. Further, since the minimum width B4 of the throttle portion 28 of the second drainage flow path 26 is equal to or larger than the minimum width B1 of each through hole 32, the dirt E flowing into the second drainage flow path 26 mainly penetrates each. Since the size of the hole 32 is equal to or less than the minimum width B1, the dirt E can easily pass through the throttle portion 28 of the second drainage flow path 26. As a result, clogging of dirt E in the second drainage channel 26 can be further suppressed.

In FIG. 13, as shown by the arrow F13, water flows from the bottom of the main body 8 into the inlet portion 26a of the second drainage flow path 26. The second drainage flow path 26 makes it easy to discharge relatively heavy dirt that tends to accumulate in the lower bottom portion of the inlet portion 10 of the main body portion 8, and can improve the dirt discharge performance of the drainage device 1.

In FIG. 13, as shown by the arrow F13, the drainage from the second drainage channel 26 continues. Since the second drainage flow path 26 is formed so that the width of the flow path from the inlet portion 26a to the throttle portion 28 gradually decreases, the dirt E flowing into the second drainage flow path 26 gradually decreases. It can flow relatively smoothly along the width of the smaller flow path, and the dirt E can be less likely to be clogged in the second drainage flow path 26.
Further, the cross section of the second drainage flow path 26 is changed from the flat shape to the square shape between the inlet portion 26a and the throttle portion 28. Therefore, the cross section of the flow path of the throttle portion 28 can be made close to a square, and the minimum value of the height and width of the flow path can be formed relatively large while forming the throttle portion 28, and the dirt E of the throttle portion 28 can be formed. It is possible to further suppress the clogging of.

In FIGS. 4 and 13, as shown by the arrow F13, the second flow path cross-sectional area D2 of the second drainage flow path 26 is made smaller than the first flow path cross-section area D1 of the first drainage flow path 12. Even in this case, the second drainage channel 26 is formed by a relatively gentle ascending slope, the top 26c is formed at a position lower than the top 12c, and the dirt E flowing into the second drainage channel 26 is removed. The force required for discharging to the outlet flow path 22 through the second drainage flow path 26 can be suppressed, and dirt E can be easily discharged from the second drainage flow path 26 to the outlet flow path 22.
Further, as shown in FIGS. 4 and 13, the pressure loss that the water flowing into the second drainage channel 26 receives while passing through the channel from the lowermost portion 26k to the uppermost portion 26l in the second drainage channel 26 is determined. It is smaller than the pressure loss that water receives while passing through the flow path from the lowermost part 12g to the uppermost part 12h in the first drainage flow path 12. Therefore, it is possible to relatively suppress a decrease in the flow velocity when water passes through the second drainage channel 26. Dirt E can be easily discharged from the second drainage flow path 26 by the outlet flow path 22.

As shown in FIGS. 14 and 15, when the inflow of water into the main body 8 disappears or the flow rate of water decreases, as shown by arrows F15 and F16, from the top 12c of the second drainage channel 26. The upper water flows out to the outlet flow path 22 via the second drainage flow path 26, and as shown by the arrow F17, the water levels of the connection portion 12a of the first drainage flow path 12 and the first drainage flow path rising portion 12b are raised. It gradually decreases. The second drainage channel 26 continues drainage when the water level is above the top 12c. As the water level in the main body 8 drops from the predetermined water level W1, the head pressure gradually decreases, and the amount of drainage discharged from the second drainage channel 26 decreases. Even when the amount of drainage decreases or the drainage ends, the second inclined portion 26g rises with a smaller inclination than the first inclined portion 26f, so that the throttle portion 28 of the second drainage flow path 26 It is possible to prevent the dirt E on the downstream side from flowing down to the throttle portion 28 along the second inclined portion 26 g. Further, as shown in F16, even when the amount of drainage decreases, when the drainage is about to end, or even when the drainage is finished, the drainage from the second drainage channel 26 is likely to be continued, and the dirt E is the first. 2 It becomes easier to drain from the drainage channel 26, and clogging of dirt E in the second drainage channel 26 can be further suppressed.

Further, since the throttle portion 28 is arranged on the downstream side of the intermediate portion between the inlet portion 26a and the outlet portion 26b of the second drainage flow path 26, after the drainage from the second drainage flow path 26 is weakened or stopped, the drainage portion 28 is arranged. The amount of dirt E flowing down from the downstream side of the throttle portion 28 to the throttle portion 28 can be relatively reduced, and clogging of the dirt E in the second drainage flow path 26 can be further suppressed.
Further, the second drainage flow path 26 includes a third inclined portion 26m provided on the downstream side of the second inclined portion 26g and inclined downward toward the downstream side. As a result, when the drainage from the second drainage channel 26 is weakened or stopped, it is possible to prevent the dirt E from flowing back from the third inclined portion 26 m in the second drainage channel 26 to the second inclined portion 26 g side. ..

As shown in FIG. 16, the inflow of water into the main body 8 is eliminated, and the water levels of the connecting portion 12a of the first drainage channel 12 and the rising portion 12b of the first drainage channel 12b are at the top 26c of the second drainage channel 26. When it drops to, the outflow of water from the second drainage channel 26 ends, and the drainage device 1 returns to the standby state. At this time, the water level in the main body 8 is the sealed water level W2.
In the standby state, since the throttle portion 28 is arranged lower than the top portion 26c defining the sealing water level W2 and on the upstream side of the top portion 26c, the throttle portion 28 is arranged in the sealing water. Therefore, it is possible to prevent the dirt E from adhering to the throttle portion 28 and to prevent the dirt E from sticking to the throttle portion 28.

According to the drainage device 1 according to the first embodiment of the present invention described above, the first drainage channel 12 is the water in the first drainage channel 12 so that the water level in the main body 8 does not exceed the predetermined water level W1. Is functioning to drain water to the outlet flow path 22. As a result, it is possible to prevent the water level in the main body 8 from exceeding the predetermined water level W1 and the water in the main body 8 from overflowing from the inlet 10 to the water receiving portion 6. Further, in the second drainage flow path 26, when a predetermined flow rate of water flows into the main body portion 8, the water level in the main body portion 8 is higher than the sealing water level W2 and is defined by the first drainage flow path 12. It functions to raise at least the predetermined water level W1. As a result, in a state where the water level in the main body 8 is automatically raised to the predetermined water level W1, ultrasonic cleaning can be performed by the ultrasonic oscillator 16 up to the predetermined water level W1 higher than the sealed water level W2.
In the main body portion 8 that functions in this way, the second drainage flow path 26 includes a throttle portion 28 that narrows a part of the flow path. If the throttle portion 28 is provided over the entire second drainage flow path 26, there are many parts where dirt is easily clogged, so that dirt is easily clogged in the second drainage flow path 26, and the dirt discharge performance is deteriorated. It ends up. According to the present invention, the throttle portion 28 that narrows a part of the flow path can easily raise the water level in the main body portion 8 when a predetermined flow rate of water flows into the main body portion 8. A throttle portion 28 that is easily clogged with dirt can be formed in a part of the second drainage flow path 26 to suppress clogging of dirt in the second drainage flow path 26, thereby reducing the discharge performance of the second drainage flow path 26. It can be suppressed.
Therefore, the first drainage channel 12 and the second drainage channel 26 suppress the clogging of dirt in the second drainage channel 26 and suppress the deterioration of the discharge performance of the second drainage channel 26, while the sealed water level. It is possible to achieve both improvement in ultrasonic cleaning performance for performing ultrasonic cleaning up to a predetermined water level W1 higher than W2 and prevention of backflow in which water in the main body 8 overflows from the inlet portion 10 to the water receiving portion 6.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the throttle portion 28 of the second drainage flow path 26 is provided in the middle of the second drainage flow path 26. As a result, the narrowing portion 28 of the second drainage flow path 26 can narrow the flow path in a portion other than the inlet portion 26a and the outlet portion 26b where dirt is likely to adhere. Therefore, the throttle portion 28, which is easily clogged with dirt, can be formed in a part of the middle of the second drainage channel 26 to further suppress the clogging of the dirt in the second drainage channel 26, and the second drainage channel 26 can be clogged with dirt. It is possible to further suppress the deterioration of the discharge performance.

Further, according to the drainage device 1 according to the first embodiment of the present invention, an intrusion suppressing portion 30 that forms a plurality of through holes 32 and suppresses the intrusion of dirt is formed at the inlet of the second drainage flow path 26. There is. Therefore, the intrusion suppressing unit 30 can suppress the intrusion of relatively large dirt and can relatively increase the total cross-sectional area of the flow path by the plurality of through holes 32, and per unit time of the second drainage flow path 26. The amount of drainage can be relatively large. Therefore, clogging of dirt in the second drainage channel 26 can be further suppressed, and deterioration of the drainage performance of the second drainage channel 26 can be further suppressed.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the flow path cross-sectional area of each through hole 32 among the plurality of through holes 32 of the intrusion suppression portion 30 is the throttle portion of the second drainage flow path 26. Since it is smaller than the flow path cross-sectional area of 28, the size of the dirt flowing into the second drainage flow path 26 is larger than the flow path cross-sectional area of each through hole 32 among the plurality of through holes 32 of the intrusion suppressing portion 30. It is small and smaller than the flow path cross-sectional area of the throttle portion 28. Further, the minimum width of the throttle portion 28 of the second drainage flow path 26 is equal to or larger than the minimum width of each through hole 32, and the dirt flowing into the second drainage flow path 26 is mainly the minimum width of each through hole 32. Since the size is smaller than or equal to the width of the above, dirt that has entered can easily pass through the throttle portion 28 of the second drainage flow path 26. As a result, clogging of dirt in the second drainage channel 26 can be further suppressed, and deterioration of the drainage performance of the second drainage channel 26 can be further suppressed.

Further, according to the drainage device 1 according to the first embodiment of the present invention, even when the flow path cross-sectional area of the inlet portion 26a of the second drainage flow path 26 is relatively large, the long side of the flat flow path cross section is obtained. By arranging the side portion on the side of the first drainage channel 12, the expansion of the second drainage channel 26 from the first drainage channel 12 to the outside is suppressed while maintaining the size of the first drainage channel 12. However, it is possible to suppress an increase in the size of the entire drainage device. Therefore, the drainage device 1 can be formed relatively compactly.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the cross section of the second drainage flow path 26 changes from a flat shape to a square shape between the inlet portion 26a and the throttle portion 28. Will be done. Therefore, the cross section of the flow path of the throttle portion 28 can be made close to a square, and the minimum value of the height and width of the flow path can be formed relatively large while forming the throttle portion 28, and the dirt of the throttle portion 28 can be prevented. The clogging can be further suppressed, and the deterioration of the discharge performance of the second drainage channel 26 can be further suppressed.

Further, according to the drainage device 1 according to the first embodiment of the present invention, since the throttle portion 28 is arranged lower than the top portion 26c defining the sealed water level W2 and upstream of the top portion 26c, the throttle portion 28 is arranged. Placed in a sealed water. Therefore, it is possible to prevent dirt from adhering to the throttle portion 28.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the throttle portion 28 of the second drainage flow path 26 is arranged on the second inclined portion 26g that rises with an inclination smaller than the first inclined portion 26f. Therefore, the water level in the main body 8 drops from the predetermined water level W1, the head pressure gradually decreases, the amount of drainage discharged from the second drainage channel 26 decreases, or the end of drainage is approaching. In addition, it is possible to prevent dirt on the downstream side of the throttle portion 28 of the second drainage flow path 26 from flowing down to the throttle portion 28 along the second inclined portion 26 g. Therefore, it is possible to further prevent the throttle portion 28 from being clogged with dirt. Further, even when the water level in the main body 8 drops from the predetermined water level W1 and the head pressure gradually decreases, the amount of drainage discharged from the second drainage channel 26 decreases or the end of drainage is approaching. Since the second drainage channel 26 includes a second inclined portion 26g that rises with an inclination smaller than that of the first inclined portion 26f, drainage from the second inclined portion of the second drainage channel 26 is likely to be continued. Dirt can be easily discharged from the second inclined portion 26g to the outlet flow path 22. Therefore, clogging of dirt in the second drainage channel 26 can be further suppressed.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the second drainage flow path 26 is formed so that the width of the flow path from the inlet portion 26a to the throttle portion 28 gradually becomes smaller. Therefore, the dirt flowing into the second drainage flow path 26 can flow relatively smoothly along the width of the flow path where the dirt flows into the second drainage flow path 26, and the dirt can be less likely to be clogged in the second drainage flow path 26. As a result, clogging of dirt in the second drainage channel 26 can be further suppressed, and deterioration of the drainage performance of the second drainage channel 26 can be further suppressed.

Further, according to the drainage device 1 according to the first embodiment of the present invention. Since the throttle portion 28 is arranged on the downstream side of the intermediate portion between the inlet portion 26a and the outlet portion 26b of the second drainage flow path 26, the throttle portion 28 is arranged from the downstream side of the throttle portion 28 of the second drainage flow path 26. The amount of dirt that returns to is relatively small, clogging of dirt in the second drainage channel 26 can be further suppressed, and deterioration of the drainage performance of the second drainage channel 26 can be further suppressed. ..

Next, the drainage device according to the second embodiment of the present invention will be described with reference to FIGS. 17 to 19. The second embodiment is an example in which the second drainage flow path of the drainage device according to the present invention is arranged at different positions in the main body. FIG. 17 is a side view of the faucet system provided with the drainage device according to the second embodiment of the present invention as viewed from the side. FIG. 18 is a cross-sectional view taken along the line XVIII-XVIII of FIG. FIG. 19 is a cross-sectional view taken along the XIX-XIX line of FIG.

Since the drainage device 101 according to the second embodiment has substantially the same structure as the drainage device according to the first embodiment described above, only the differences from the first embodiment of the second embodiment of the present invention will be described and the same. The same reference numerals are given to the drawings for various parts, and the description thereof will be omitted.

The drainage device 101 includes a main body portion 108, and the main body portion 108 has an inlet portion 10 opened on the water receiving portion 6 side and a first drainage which is a trap-shaped flow path provided on the downstream side of the inlet portion 10. It includes a flow path 12, a second drainage flow path 126 branched from the first drainage flow path 12, and a water bottle 25 provided below the net cage 24. The water bottle 25 is formed in a tubular shape and extends from the vicinity of the lower portion of the net cage 24 to the vicinity of the bottom portion of the main body portion 108 further below. The lower end of the water bottle 25 extends below the inlet portion 126a of the second drainage flow path 126, which will be described later.

Next, the first drainage flow path 12 and the second drainage flow path 126 of the drainage device according to the second embodiment of the present invention will be described with reference to FIGS. 18 and 19.
The first drainage flow path 12 is configured such that a predetermined water level W1 (see FIG. 19) equal to or lower than the height of the inlet portion 10 is defined by the top portion 12c of the trap-shaped flow path.
The second drainage flow path 126 is a bypass extending from the inlet portion 126a of the second drainage flow path 126 provided on the upstream side of the top portion 12c of the first drainage flow path 12 to the outlet portion 126b provided on the downstream side of the top portion 12c. Form a flow path. The second drainage flow path 126 includes a second drainage flow path lowering portion 126i that descends diagonally downward from the inlet portion 126a toward the downstream side. The inlet portion 126a of the second drainage flow path 126 is formed on the side wall surface of the connection portion 12a of the first drainage flow path 12 outside the water bottle 25. The inlet portion 126a constitutes the highest portion of the flow path of the second drainage flow path 126. The second drainage flow path 126 extends downward substantially linearly from the inlet portion 126a to the outlet 126b provided in the outlet flow path 22. The second drainage flow path 126 defines the sealed water level W2 by the inlet portion 126a. The second drainage channel 126 is configured to define the sealed water level W2, for example, by the highest portion of the channel. For example, the sealing water level W2 may be defined by forming the intermediate portion of the second drainage channel 126 or the outlet thereof forming the highest portion of the channel. Further, the sealed water level W2 may be defined by a configuration other than the second drainage flow path 126. The sealed water level W2 is defined below the net cage 24. The sealed water level W2 is located near the center or the lower portion of the first drainage flow path rising portion 12b, and is located near the center or the lower portion of the main body portion 108. The inlet 126a is provided at a height lower than the top 12c of the first drainage channel 12. The cross section of the second drainage channel 126 is formed in a circular shape.

The second drainage flow path 126 includes a throttle portion 128 that narrows a part of the flow path at the inlet 126a. The throttle portion 128 extends substantially sideways and forms a slight downward slope toward the downstream side. The throttle portion 128 is formed in a circular tube shape, and the cross section of the flow path is formed in a circular shape. The diameter of the flow path of the throttle portion 128 is smaller than the diameter of the flow path of the second drainage flow path lowering portion 126i.

The throttle portion 128 of the second drainage flow path 126 is formed in a second flow path cross-sectional area D2 (see FIG. 18) so that the second drainage amount can be drained per unit time. The second flow path cross section D2 of the second drainage flow path 126 is smaller than the first flow path cross section D1 of the first drainage flow path 12. Therefore, the second drainage channel 126 has a larger channel resistance than the first drainage channel 12 due to the throttle portion 128. The second drainage flow path 126 is the main body portion 108 when the inflow amount of water per unit time that exceeds the second drainage amount per unit time of the throttle portion 128 of the second drainage flow path 126 flows into the main body portion 108. It functions to raise the water level in the water level to at least a predetermined water level W1 higher than the sealed water level W2 and defined by the first drainage channel 12.

The first drainage flow path 12 and the second drainage flow path 126 serve as drainage means for draining the water flowing into the main body portion 108 to the outlet flow path 22 so that the water level in the main body portion 108 does not exceed the predetermined water level W1. Function. At least the first drainage channel 12 functions to drain the water in the first drainage channel 12 to the outlet channel 22 so that the water level in the main body 108 does not exceed the predetermined water level W1. When the water level in the main body 108 reaches the predetermined water level W1 by the first drainage flow path 12 and the second drainage flow path 126, the drainage means per unit time of water flowing out from the main body portion 108 to the outlet flow path 22. The amount of drainage of the water is formed to be equal to or larger than the amount of water flowing into the main body 8 per unit time.

Further, in the first drainage flow path 12 and the second drainage flow path 126, the water level in the main body portion 108 is raised from the sealing water level W2 in the first drainage flow path rising portion 12b due to the water flowing into the main body portion 108. It functions as a water level raising means for raising the water level to a predetermined water level W1 which is high and equal to or lower than the height of the inlet portion 10. At least the second drainage channel 126 seals the water level in the main body 108 when the inflow amount of water per unit time exceeding the second drainage amount per unit time of the throttle 128 flows into the main body 108. It functions to be higher than the water level W2 and at least rise to a predetermined water level W1 defined by the first drainage channel 12.

Next, the operation (action) of the drainage device according to the second embodiment of the present invention described above will be described with reference to FIG.
FIG. 19 shows a standby state before water is discharged from the faucet device 4. In the standby state, the water level in the main body 108 is the sealed water level W2. Since the water bottle 25 extends below the water level W2, it is surely prevented that the odor rises from the outlet flow path 22 to the inlet portion 10 in the standby state. In the standby state, the faucet device 4 is in a state of being stopped, and the ultrasonic oscillator 16 is also in a state of being stopped.

When the water is discharged from the faucet device 4, the water supplied into the connection portion 12a of the first drainage flow path 12 passes from the inlet 126a of the second drainage flow path 126a to the outlet through the second drainage flow path 126. It is drained to the flow path 22.

The main body contains water with an inflow amount per unit time (or total inflow amount per fixed time) that exceeds the second drainage amount per unit time (or total drainage amount per fixed time) of the throttle portion 128 of the second drainage flow path 126. When the water flows into the 108, the water cannot completely flow out from the second drainage channel 126 and is stored in the main body 108. Therefore, the first drainage of the main body 108 while the water flowing into the main body 108 is discharged to the outlet flow path 22 through the second drainage flow path 126 by the first drainage flow path 12 and the second drainage flow path 126. The water level in the first drainage channel rising portion 12b of the channel 12 is automatically raised. Since the second drainage flow path 126 includes a throttle portion 128 that narrows a part of the flow path, the second drainage amount per unit time can be suppressed to a relatively low level, and the first drainage flow path can be suppressed by a relatively small amount of water. It is possible to easily raise the water level in the drainage channel rising portion 12b.

Further, when water flows into the main body 108, the water level in the first drainage channel rising portion 12b is raised to a predetermined water level W1 defined by the top portion 12c of the first drainage channel 12. When the water level in the first drainage channel 12 reaches the predetermined water level W1, the water flowing into the main body 108 is discharged to the outlet channel 22 via the second drainage channel 126, and at the same time, the first drainage channel 12. 1 It flows out from the top 12c of the drainage channel 12 to the descending portion 12d.

Even if water further flows into the main body 8 with an inflow amount exceeding the second drainage amount, the water level in the main body 108 is maintained at the predetermined water level W1. The control unit 20 determines that the water level has reached the predetermined water level W1 in which the water level has risen to the inlet portion 10 by the water level detection sensor 18. By operating the ultrasonic oscillator 16 by the control unit 20 in a state where the water level is the predetermined water level W1, ultrasonic cleaning can be performed on almost the entire main body 108, and dirt inside the main body 108 is likely to adhere. Ultrasonic cleaning can be performed on the flow path portion, for example, the inlet portion 10 and the net cage 24.

In this way, the water flowing into the main body 8 is drained to the outlet flow path 22 by the first drainage channel 12 and the second drainage channel 126 so that the water level in the main body 108 does not exceed the predetermined water level W1. I'm letting you. As a result, it is possible to prevent the water level in the main body 108 from exceeding the predetermined water level W1 and the water in the main body 8 from overflowing from the inlet 10 to the bottom surface 6b of the water receiving portion 6.

When the inflow of water into the main body 8 disappears or the flow rate of water decreases, the water above the inlet 126a of the second drainage channel 126 is introduced by the first drainage channel 12 and the second drainage channel 126. It flows out to the outlet flow path 22 through the second drainage flow path 126, and the water level of the first drainage flow path rising portion 12b gradually drops. When the water level is above the inlet 126a, the second drainage channel 126 continues to drain the second drainage amount approximately per unit time.

As shown in FIG. 19, when the water level of the connecting portion 12a and the first drainage channel rising portion 12b of the first drainage channel 12 drops to the inlet 126a of the second drainage channel 126, the water level from the second drainage channel 126 The outflow of water is completed, and the drainage device 1 returns to the standby state. At this time, the water level in the main body 8 is the sealed water level W2.

1: Drainage device 6: Water receiving part 6a: Bottom part 8: Main body part 10: Inlet part 12: First drainage flow path 12b: First drainage flow path rising part (rising flow path)
12c: Top 12d: Downward part (downward flow path)
16: Ultrasonic oscillator 22: Outlet flow path 26: Second drainage flow path 26a: Inlet part 26b: Outlet 26b: Outlet part 26c: Top 26d: Intermediate part 26e: Long side part 26f: First inclined part 26g: First 2 Inclined part 28: Squeezing part 30: Intrusion suppression part 101: Drainage device 108: Main body part 126: Second drainage flow path 126a: Inlet part 126a: Inlet 126b: Outlet part 128: Squeezing part B1: Width B2: Width B3: Width B4: Width B5: Width D3: Channel cross-sectional area H1: Height H2: Height W1: Predetermined water level W2: Sealed water level

Claims (10)

It is a drainage device installed at the bottom of the water receiving part.
A main body that has an inlet that opens on the water receiving side and forms a water seal inside itself.
An ultrasonic oscillator that oscillates ultrasonic waves in the water inside the main body,
It is provided with an outlet flow path provided on the downstream side of the main body.
The main body portion includes a first drainage channel and a second drainage channel.
The first drainage flow path includes an ascending flow path and a descending flow path provided on the downstream side of the ascending flow path, and the height of the inlet portion is provided by a top portion between the ascending flow path and the descending flow path. The first drainage channel is configured to specify the following predetermined water level, and the first drainage channel allows the water in the first drainage channel to flow through the outlet channel so that the water level in the main body does not exceed the predetermined water level. Functions to drain
The second drainage flow path is configured to regulate the sealed water level in the main body portion and includes a throttle portion for narrowing a part of the flow path, and the second drainage flow path is the first drainage flow path. The second drainage flow path is formed so as to have a flow path resistance larger than that of the road, and the second drainage flow path is when water with an inflow amount per unit time exceeding the drainage amount per unit time of the throttle portion flows into the main body portion. A drainage device characterized by functioning to raise the water level in the main body to at least the predetermined water level higher than the sealed water level and defined by the first drainage flow path. The drainage device according to claim 1, wherein the throttle portion of the second drainage flow path is provided in the middle of the second drainage flow path. The main body further comprises an intrusion suppressing portion that forms a plurality of holes at the inlet portion of the second drainage flow path and suppresses dirt from entering the second drainage flow path. Or the drainage device according to 2. The flow path cross-sectional area of each of the plurality of holes of the intrusion suppression portion is smaller than the flow path cross-sectional area of the throttle portion of the second drainage flow path, and the flow path cross-sectional area of the second drainage flow path is the same. The drainage device according to claim 3, wherein the minimum width of the throttle portion is equal to or larger than the minimum width of each of the above holes. The cross section of the inlet of the second drainage channel is formed in a flat shape, and the long side portion of the cross section of the inlet of the second drainage channel is arranged on the first drainage channel side. The drainage device according to any one of claims 1 to 4. The drainage device according to claim 5, wherein the cross section of the second drainage channel is changed from a flat shape to a square shape between the inlet portion and the throttle portion. The drainage device according to any one of claims 1 to 6, wherein the throttle portion of the second drainage flow path is arranged lower than the top portion defining the sealed water level and upstream of the top portion. .. The second drainage flow path has a first inclined portion that rises on the upstream side portion thereof, and a second inclined portion that is provided on the downstream side of the first inclined portion and rises with an inclination smaller than that of the first inclined portion. The drainage device according to claim 7, wherein the throttle portion of the second drainage flow path is arranged on the second inclined portion. The drainage device according to any one of claims 1 to 8, wherein the second drainage flow path is formed so that the width of the flow path from the inlet portion to the throttle portion is gradually reduced. The one according to any one of claims 1 to 9, wherein the throttle portion of the second drainage flow path is arranged on the downstream side of the intermediate portion between the inlet portion and the outlet portion of the second drainage flow path. Drainage device.

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