JP2020176481A - Draining device - Google Patents

Abstract

To provide a draining device capable of suppressing the overflow of water in a body part beyond an ultrasonic cleaning water level into a water receiver part while actualizing easy rise of a water level in the body part up to the ultrasonic cleaning water level higher than a sealing water level to clean dirt in an area near the sealing water level in the body part with ultrasonic cleaning.SOLUTION: The draining device in this invention includes a body part 10 including the sealing water forming part to form a trap-shaped flow path, and a flow control part 26 formed so that a water level in the body part easily rises from a sealing water level W0 in the sealing water forming part up to an ultrasonic cleaning water level W2 higher than the sealing water level with water flowing into the body part, the flow control part 26 being formed so that a drainage volume per unit time to the downstream side during a time until the water level in the body part 10 reaches the ultrasonic cleaning water level W2 from the sealing water level W0 is smaller than the drainage volume per unit time to the downstream side after the water level in the body part reaches the ultrasonic cleaning water level W2.SELECTED DRAWING: Figure 5

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 that receives water.

Conventionally, as shown in Patent Document 1, a drainage device having an ultrasonic transmitter in a pipe between a bowl portion and an elbow pipe is known.

Further, as shown in Patent Document 2, a drainage device provided on the bottom surface of the sink and provided with an ultrasonic transmitter is known. In this drainage device, when the user tries to clean the drainage portion of the drainage device, the user turns on and operates the switch of the operation unit. 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 up to the entrance in the drainage section to clean the dirt inside the drainage section.

U.S. Pat. No. 4,893,361 Japanese Unexamined Patent Publication No. 2004-324108

However, in the drainage device as shown in Patent Document 1, since the water level of the pipe between the bowl portion and the elbow pipe is basically maintained at the sealing water level, dirt adheres to the inner wall surface near the sealing water level. Cheap. In such a drainage device, there is a problem that the part where the dirt is attached cannot be sufficiently ultrasonically cleaned because the part where the dirt is attached is not submerged in water during normal ultrasonic cleaning. It was.

On the other hand, as shown in Patent Document 2, in the case of performing ultrasonic cleaning with water stored up to the inlet portion in the drainage portion above the sealed water level, when more water is supplied into the sink, Since the water overflows from the drainage part into the sink, the water cannot flow when performing ultrasonic cleaning, and there is a problem that the drainage device is not easy to use.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and the water level in the main body is set to the sealing water level in order to clean the dirt near the sealing water level in the main body by ultrasonic cleaning. It is an object of the present invention to provide a drainage device capable of easily raising the water level to a higher ultrasonic cleaning water level and suppressing the water in the main body from overflowing to the water receiving portion beyond the ultrasonic cleaning water level.

In order to solve the above-mentioned problems, the present invention is a drainage device provided at the bottom of a water receiving portion for receiving water, and is a main body portion provided on the downstream side of the water receiving portion to seal water. The main body having a water-sealing forming portion that forms a trap-shaped flow path, an ultrasonic oscillator that oscillates ultrasonic waves in the water in the main body, and water flowing into the main body are used to form the above. A flow rate adjusting unit formed so that the water level in the main body easily rises from the sealing water level in the sealing water forming portion to the ultrasonic cleaning water level higher than the sealing water level in the sealing water forming portion. In the flow rate adjusting unit, the amount of drainage per unit time to the downstream side from the sealed water level to the ultrasonic cleaning water level is set to the ultrasonic cleaning water level in the main body. It is characterized by including the above-mentioned flow rate adjusting unit formed so as to be smaller than the amount of drainage per unit time to the downstream side in the reached state.
In the present invention configured as described above, in the flow rate adjusting unit, due to the water flowing into the main body portion, the water level in the main body portion is changed from the sealing water level in the sealing water forming portion to the sealing water level in the sealing water forming portion. It is formed so that it can easily rise to a higher ultrasonic cleaning water level. Further, in the flow rate adjusting unit, the amount of drainage per unit time from the sealed water level to the ultrasonic cleaning water level in the main body is measured, and the water level in the main body is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage per unit time to the downstream side in the state of reaching. As a result, the water level in the main body rises to the ultrasonic cleaning water level, and ultrasonic cleaning can be easily performed to the ultrasonic cleaning water level higher than the sealing water level, and the water level in the main body rises above the ultrasonic cleaning water level. It can be difficult. Therefore, water can flow to the main body even during ultrasonic cleaning. Therefore, according to the above configuration, in order to clean the dirt near the sealing water level in the main body by ultrasonic cleaning, the water level in the main body can be easily raised to the ultrasonic cleaning water level higher than the sealing water level. It is possible to prevent the water in the main body from overflowing to the water receiving portion beyond the ultrasonic cleaning water level.

In the present invention, preferably, the flow rate adjusting portion includes a wall that narrows the flow path in the water sealing forming portion.
In the present invention configured as described above, the water level in the main body is raised to the ultrasonic cleaning water level by the wall narrowing the flow path in the sealing water forming portion, and the ultrasonic cleaning is performed to the ultrasonic cleaning water level higher than the sealing water level. It can be easily performed, and the water level in the main body can be prevented from rising beyond the ultrasonic cleaning water level. Therefore, according to the above-described configuration, the water level in the main body is set higher than the sealing water level in order to clean the dirt near the sealing water level in the main body by ultrasonic cleaning due to the relatively simple structure. It is possible to prevent the water in the main body from overflowing to the water receiving part beyond the ultrasonic cleaning water level.

In the present invention, preferably, the wall of the flow rate adjusting portion is formed so as to rise upward from the sealing water level regulating portion that regulates the sealing water level, and is laterally oriented with respect to the main water flow direction. The wall is formed with a notch extending downward from the upper end thereof.
In the present invention configured as described above, the wall of the flow rate adjusting portion is formed so as to rise upward from the sealing water level regulating portion that regulates the sealing water level, and with respect to the main water flow direction. The wall is formed with a notch extending downward from the upper end thereof. As a result, the continuity of the rate of change in the water level rise when the water level in the main body rises from the sealing water level to the ultrasonic cleaning water level is higher than that in the case where the wall is formed with a notch at a position away from the upper end thereof. It is possible to suppress the damage (rapid rise rate) and raise the water level at a relatively constant rate of change in water level with respect to a relatively constant inflow.

In the present invention, preferably, the width of the notch formed in the wall of the flow rate adjusting portion in the left-right direction is substantially constant in the up-down direction.
In the present invention configured as described above, when the water level in the main body portion drops to the sealed water level, it is possible to suppress the decrease in the drainage flow rate as the water level decreases. Therefore, when the water level in the main body drops to the vicinity of the sealed water level, the dirt floating on the water surface can be discharged from the notch to the downstream side, and it is possible to suppress the deterioration of the discharge performance of the dirt floating on the water surface. .. Further, since the wall notch is formed by a relatively simple structure, it is possible to prevent dirt from adhering to the wall notch and causing clogging.
If the width of the notch in the left-right direction narrows as it goes downward, the water level drops to near the sealed water level, although it has a certain effect on suppressing the water level rise and water overflow as described above. In some cases, as the water level drops, the drainage flow rate decreases, which may reduce the discharge performance of dirt floating on the water surface.

In the present invention, preferably, the width of the notch formed in the wall of the flow rate adjusting portion in the left-right direction becomes wider in the vertical direction toward the lower side.
In the present invention configured as described above, the width of the notch formed in the wall of the flow rate adjusting unit in the left-right direction becomes wider in the vertical direction toward the lower side. This will
When the water level in the main body drops to the sealed water level, it is possible to suppress the decrease in the drainage flow rate as the water level drops. Therefore, when the water level in the main body drops to the vicinity of the sealed water level, the dirt floating on the water surface can be discharged from the notch to the downstream side, and it is possible to suppress the deterioration of the discharge performance of the dirt floating on the water surface. ..

In the present invention, preferably, the net cage provided in the main body and having a mesh is provided, and the flow rate adjusting unit is in a state where the ultrasonic cleaning water level is arranged in the main body. It is formed so as to be located below the bottom of the net cage.
In the present invention configured as described above, the flow rate adjusting unit is formed so as to be located below the bottom of the net cage in which the ultrasonic cleaning water level is arranged in the main body. To. As a result, when the ultrasonic cleaning water level is located below the bottom of the net cage, the main body during ultrasonic cleaning is compared with the case where the ultrasonic cleaning water level is located above the bottom of the net cage. The amount of water per unit time in the part is reduced, the sound pressure of ultrasonic waves acting on the wall surface near the sealing water level where dirt is likely to remain can be made relatively high, and the ultrasonic cleaning ability near the sealing water level can be improved. ..

According to the drainage system of the present invention, in order to clean the dirt near the sealing water level in the main body by ultrasonic cleaning, the water level in the main body can be easily raised to the ultrasonic cleaning water level higher than the sealing water level, and the inside of the main body can be easily raised. It is possible to prevent the water from overflowing to the water receiving portion beyond the ultrasonic cleaning water level.

It is a front view which looked at the drainage system provided with the drainage device by 1st Embodiment of this invention from the front. It is a side view which looked at the drainage system provided with the drainage device by 1st Embodiment of this invention from the side. FIG. 5 is an exploded perspective view showing a state in which the lid, the net cage, and the inner catching portion are disassembled from the drainage main body portion as viewed from diagonally above the sink with the drainage device according to the first embodiment of the present invention attached to the sink. It is sectional drawing seen along the IV-IV line of FIG. It is sectional drawing seen along the VV line of FIG. It is a block diagram which shows schematic structure of the drainage system provided with the drainage device according to 1st Embodiment of this invention. It is sectional drawing seen along the line VII-VII of FIG. It is a partially enlarged sectional view which shows the standby state of the drainage main body part 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 drainage main body part of the drainage apparatus by 1st Embodiment of this invention. Further water flows into the drainage main body of the drainage device according to the first embodiment of the present invention, and the inflowed water flows out to the outlet flow path through the water level adjusting section, and the water level in the sealing water forming section is formed by the water level adjusting section. It is a partially enlarged sectional view which shows the state which is raised. It is a partially enlarged sectional view which shows the state which the water further flowed into the drainage main body part of the drainage apparatus by 1st Embodiment of this invention, and the water level in the drainage main body part reached the ultrasonic cleaning water level. FIG. 5 is a partially enlarged cross-sectional view showing a state in which the inflow of water into the drainage main body of the drainage device according to the first embodiment of the present invention is stopped and the water level in the drainage main body is gradually lowered. It is a partially enlarged sectional view which shows the state which returned to the standby state after the completion of a series of cleaning operations in the drainage apparatus by 1st Embodiment of this invention. It is sectional drawing which shows the water level adjustment part of the drainage apparatus of the 1st modification by 1st Embodiment of this invention by the sectional view of the same position as FIG. It is sectional drawing which shows the water level adjustment part of the drainage apparatus of the 2nd modification by 1st Embodiment of this invention by the same sectional view as FIG. It is sectional drawing which shows the water level adjustment part of the drainage apparatus of the 3rd modification according to 1st Embodiment of this invention by the same sectional view as FIG. It is sectional drawing which shows the water level adjustment part of the drainage apparatus of the 4th modification by 1st Embodiment of this invention by the same sectional view as FIG. It is a central sectional view of the drainage apparatus according to 2nd Embodiment of this invention. It is sectional drawing seen along the XIX-XIX line of FIG. It is a perspective view of the bathroom provided with the drainage apparatus according to 3rd Embodiment of this invention, and the drainage apparatus according to 4th Embodiment. FIG. 5 is a partially enlarged cross-sectional view of a portion near the floor surface of the bathroom as seen along the line XXI-XXI of FIG. It is a partially enlarged sectional view of the part of XXII of FIG. It is a perspective view of the washbasin faucet device provided with the drainage device according to the 5th Embodiment of this invention. It is a partially enlarged sectional view of the portion near the floor surface of the wash bowl of the washbasin faucet device seen along the line XXIV-XXIV of FIG. 24. It is a partially enlarged sectional view of the part of XXV of FIG.

Hereinafter, embodiments of the present invention disclosed herein will be described in detail with reference to the drawings. From the following description, many improvements and other embodiments of the present invention will be apparent to those skilled in the art. Therefore, the following description should be construed as an example only and is provided for the purpose of teaching those skilled in the art the best aspects of carrying out the present invention. The details of its structure and / or function can be substantially modified without departing from the spirit of the present invention.

Hereinafter, a drainage system including a 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 the drainage system provided with the drainage device according to the first embodiment of the present invention from the front, and FIG. 2 is a side view of the drainage system provided with the drainage device according to the first embodiment of the present invention. It is a side view.
As shown in FIGS. 1 and 2, the drainage system 2 provided with the drainage device 1 according to the first embodiment of the present invention is a system provided in the kitchen and performing ultrasonic cleaning. The drainage system 2 is a system provided with a drainage device having an ultrasonic cleaning function. The drainage system 2 may be a system other than the kitchen system.

The drainage system 2 includes a sink 4 provided in the kitchen 3 that receives water, a kitchen faucet device (water discharge unit) 6 that is a kitchen faucet that discharges water (hot water) to the sink 4. A drainage device 1 provided at the bottom of the sink 4 of the kitchen 3 and a drainage flow path 8 provided on the downstream side of the drainage device 1 are provided.

The sink 4 is formed so as to discharge the water discharged from the kitchen faucet device 6 to the downstream side. The kitchen faucet device 6 is connected to a water supply channel 9 to which water is supplied from a water supply source (not shown) and a hot water supply channel 11 to which hot water is supplied on the upstream side. The kitchen faucet device 6 includes a hot water mixing faucet 6a, mixes water from the water supply channel 9 with hot water from the hot water supply channel 11, and discharges water from the water discharge unit 6b. The water supply channel 9 and the hot water supply channel 11 once extend upward and are connected to the hot water mixing tap 6a, and the water discharge side flow path 6c extends downward from the hot water mixing tap 6a and passes through the flow rate sensor 20 described later to the water discharge unit. It rises again to 6b and extends.

The drainage flow path 8 is connected to the downstream end of the drainage device 1 and extends downward in the vertical direction. The drainage flow path 8 is further connected to a drainage pipe (not shown) on the downstream side. A part of the drainage flow path 8 may be formed by the drainage main body portion 10.

Next, the drainage device according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 6.
FIG. 3 is an exploded perspective view showing a state in which the lid, the net cage, and the inner catching portion are disassembled from the drainage main body portion when the drainage device according to the first embodiment of the present invention is attached to the sink and viewed from diagonally above the sink. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 1, FIG. 5 is a cross-sectional view taken along line VV of FIG. 1, and FIG. 6 is a cross-sectional view of the present invention. It is a block diagram which shows schematic structure of the drainage system provided with the drainage device by 1 Embodiment.

First, the drainage device 1 includes a drainage main body 10 which is a main body connected to the downstream end of the bottom 4a of the sink 4. A water supply flow path different from the flow path from the sink 4 may be connected to the drainage main body 10. Another water supply channel is connected to another water source (not shown) or the same water source. The water flowing into the drainage main body 10 also includes water flowing into the drainage main body 10 from a water supply flow path different from the flow path from the sink 4. Further, the water flowing into the drainage main body 10 includes water containing any of detergent, shampoo, body soap, tableware stains, stains on the water receiving portion, and the like, for example, domestic wastewater.

The drainage main body 10 is provided on the downstream side of the sink 4 and is provided on the downstream side of the net cage storage portion 12 for storing the net cage and the seal that forms a water seal. It is provided with a water forming portion 14. The net cage storage portion 12 and the water sealing forming portion 14 of the drainage main body portion 10 are formed of resin.
Hereinafter, in the description of the first embodiment of the present invention, the upstream side is the front side and the opposite side to the upstream side is the rear side with respect to the main water flow direction reaching the water level adjusting unit 26. The direction of the main water flow to reach is described with the right side as the right side when viewed from the front and the left side as the left side when viewed from the front.

The net cage storage portion 12 is formed in a size so that the net cage 18 can be arranged inside. The net cage storage portion 12 has a hollow shape so that the net cage 18 can be arranged inside. The net cage storage portion 12 includes an inlet portion 12a opened on the sink 4 side, an intermediate portion 12b in which the net cage is stored, and an outlet portion 12c whose flow path diameter is reduced from the intermediate portion toward the water sealing forming portion 14. And have.

As shown in FIG. 5, the inlet portion 12a of the net cage storage portion 12 is opened in a square shape to form a drainage port portion of the sink 4. The inlet portion 12a is formed by further denting a part of the bottom portion 4a downward. The inlet portion 12a has a larger flow path diameter than the water sealing forming portion 14. The inlet portion 12a forms an opening larger than or substantially the same size as the outer diameter of the net cage 18 so that the net cage 18 can be arranged up to the intermediate portion 12b. The inlet portion 12a may form a relatively large opening extending to the outside of the intermediate portion 12b. That is, the opening may be narrowed stepwise from the sink 4 to the intermediate portion 12b via the inlet portion 12a. The intermediate portion 12b of the net cage storage portion 12 is formed in a rectangular tubular shape. The intermediate portion 12b has a larger flow path diameter than the water sealing forming portion 14. The outlet portion 12c of the net cage storage portion 12 is formed at the lower end portion of the net cage storage portion 12. The outlet portion 12c forms an inwardly flat portion. The outlet portion 12c is connected to the water sealing forming portion 14. The outlet portion 12c has a flow path diameter larger than that of the water sealing forming portion 14, and is formed so as to narrow the flow path from the intermediate portion 12b to the sealing water forming portion 14. The inlet portion 12a, the intermediate portion 12b and the outlet portion 12c form a vertical wall. The net cage storage portion 12 has a larger flow path diameter than the water sealing forming portion 14, so that the user can easily see the inside and the user can easily insert his / her fingers to clean the inside. Here, the net cage storage unit 12 is configured such that the net cage 18 is removed from the net cage storage portion 12 by the user in order to dispose of the dust collected in the net cage 18. Further, the net cage storage portion 12 is configured so that the net cage 18 after the waste is discarded by the user can be attached to the net cage storage portion 12. That is, the net cage storage unit 12 is configured so that the user can relatively easily insert his / her fingers to perform operations such as removing and attaching the net cage 18. As described above, since the net cage storage portion 12 is configured to easily insert the user's fingers, the inside of the net cage storage portion 12 is configured to be relatively easy to clean by the user's fingers. The outlet portion 12c of the net cage storage portion 12 may not be formed so that the flow path diameter is reduced, and the flow path diameter may be further reduced by another member on the downstream side.

The water seal forming unit 14 has a function of draining the water discharged into the sink 4 and storing a part of the inflowed water to form a normal water seal at the water seal water level W0 inside the sink 4. Here, the "sealing water" refers to a portion filled with water by a trap provided in the drainage main body portion or the water receiving portion in order to block odors and the like. Further, "normal water sealing" means water sealing when the water spouting part such as a kitchen faucet does not spout water when not in use (standby state).

As shown in FIG. 5, the sealing water forming portion 14 forms a trap-shaped flow path that forms a sealing water at the sealing water level W0.
The water sealing forming portion 14 is a connecting portion 14a connected to the outlet portion 12c of the net cage storage portion 12 and an ascending portion 14b which is an ascending flow path that ascends diagonally upward toward the downstream side so as to form a drain trap. A top portion 14c, which is a folded portion connected to the rising portion 14b of the drain trap between the rising portion 14b and the descending portion 14d, and a descending flow path provided on the downstream side of the rising portion 14b and descending from the top portion 14c. It is provided with a lowering portion 14d. Therefore, the water sealing forming portion 14 forms a trap-shaped flow path that folds back from the rising portion 14b toward the descending portion 14d. The top 14c defines the sealed water level W0. The lowering portion 14d extends substantially downward in the vertical direction and is connected to the drainage flow path 8. The water-sealing forming portion 14 forms a flow path of the drain trap as a flow path on the drainage flow path 8 side, and the inner diameter of the flow path is small, the shape of the flow path is complicated, and the depth of the flow path is high. By having any one of the elements such as deep or a combination of at least a part of these elements, it is difficult for the user to put his / her fingers in and clean it as compared with the net cage storage unit 12.

Further, the drainage device 1 includes a lid 16 arranged so as to cover above the inlet portion 12a of the net cage storage portion 12, and a net cage 18 arranged on the flow path in the net cage storage portion 12 and having a mesh. Controls the operation of the flow rate sensor 20, which is a detection unit that detects water discharged from the kitchen faucet device 6, the ultrasonic oscillator 22 that oscillates ultrasonic waves in the water in the drainage main body 10, and the ultrasonic oscillator 22. Due to the control device 24 and the water flowing into the drainage main body 10, the water level in the drainage main body 10 is higher than the sealing water level W0 in the sealing water forming portion 14 to the sealing water level W0 in the sealing water forming portion 14. It is provided with a water level adjusting unit 26 which is a flow rate adjusting unit formed so as to easily rise to the ultrasonic cleaning water level W2, and a dirt catching unit 28 formed at the bottom of the net cage storage unit 12.

The lid 16 is attached to the upper part of the net cage 18 so that the net cage 18 is difficult to see from above. The lid 16 forms a hole (not shown) into which a small object such as water or dust flows in from the inlet portion 12a of the net cage storage portion 12.

The net cage 18 is arranged inside the intermediate portion 12b of the net cage storage portion 12. The upper end of the net cage 18 is arranged inside the inlet portion 12a, and the upper end thereof is formed so as to substantially match the inlet portion 12a. Therefore, the net cage 18 is formed so as to cover the entire flow path on the lower side of the inlet portion 12a. The net cage 18 is formed with a plurality of openings, and while allowing water flowing in from the sink 4 to pass through, the net cage 18 is caught in the net cage 18 without passing through small objects such as dust contained in the water flowing in from the sink 4. It is supposed to gather. The net cage 18 is formed in a square shape when viewed from above. The net cage 18 can be changed to a dust catching member having an arbitrary shape having a function of catching dust and the like. The net cage 18 is curved so as to project downward when the net cage 18 is arranged in the net cage storage portion 12. Therefore, the top portion 18a of the bottom portion of the net cage 18 is formed as the top portion of the curved portion at a position separated from the wall surface of the net cage storage portion 12. Therefore, the net cage 18 is formed so that the water flowing out from the top portion 18a of the lower portion of the net cage 18 can easily flow down in the air separated from the wall surface of the net cage storage portion 12. When the inner catching portion 36 described later is provided, the opening of the net cage 18 is preferably formed to have a size smaller than the opening 36a of the inner catching portion 36.

The flow rate sensor 20 is provided between the hot water mixing tap 6a and the water discharge portion 6b of the kitchen faucet device 6. The flow rate sensor 20 can detect the flow rate of water discharged from the water discharge unit 6b of the kitchen faucet device 6 per unit time. Further, the flow rate sensor 20 can detect that water is discharged from the water discharge unit 6b by detecting the flow rate per unit time. The flow rate sensor 20 is electrically connected to the control device 24.

The ultrasonic oscillator 22 is provided below the net cage storage portion 12 of the drainage main body portion 10. The ultrasonic oscillator 22 is provided at the bottom of the drainage main body 10, and is arranged so as to irradiate ultrasonic waves upward. The ultrasonic oscillator 22 is electrically connected to the control device 24.

The control device 24 has a built-in CPU, memory, etc., has a function of receiving a detection signal transmitted from the flow sensor 20, and controls the operation of the ultrasonic oscillator 22 based on a predetermined control program or the like stored in the memory. To do. The control device 24 controls the oscillation of ultrasonic waves and the stop of the oscillation by the ultrasonic oscillator 22. The control device 24 includes an ultrasonic cleaning mode in which oscillation by the ultrasonic oscillator 22 is started in conjunction with detection of water discharged by the flow sensor 20, and the ultrasonic cleaning mode allows the kitchen faucet device 6 to start oscillating. The start of water discharge and the start of ultrasonic cleaning can be linked. As a modification, the flow sensor 20 is arranged at another position to detect the water flowing into the drainage main body 10, and the control device 24 uses the ultrasonic oscillator 22 to detect ultrasonic waves based on such detection. You may control to start the oscillation of. Further, as a further modification, the flow rate sensor 20 detects the water discharged from the drainage main body 10, and the control device 24 controls to start the ultrasonic oscillation by the ultrasonic oscillator 22 based on such detection. You may go.

Next, the water level adjusting unit of the drainage device according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 5 and 7.
FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG.
In the water level adjusting unit 26, for example, when the amount of water flowing into the drainage main body 10 is equal to or higher than a predetermined flow rate, the water level in the drainage main body 10 is changed to the inside of the sealing water forming unit 14 by the water flowing into the drainage main body 10. It is formed so as to easily rise from the sealing water level W0 of No. 1 to the ultrasonic cleaning water level W2 higher than the sealing water level W0 in the sealing water forming portion 14. The water level adjusting unit 26 is arranged in the water sealing forming portion 14 that forms a single flow path from the inlet portion (inlet portion 12a) to the outlet portion (connecting portion with the drainage flow path 8) in the drainage main body portion 10. Adjust the water level by doing so.
In the water level adjusting unit 26, when the water level in the drainage main body 10 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage main body 10 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2. Since the water level adjusting unit 26 has a function of adjusting the water level by the structure of the flow path without opening and closing the flow path by an electric solenoid valve or the like, the inside of the water drainage main body 10 does not depend on the operation of the user or the like. The water level can be adjusted automatically according to the inflow to.

The water level adjusting portion 26 is formed at the top portion 14c, which is a sealing water level regulating portion that regulates the sealing water level of the drain trap of the sealing water forming portion 14. More specifically, the water level adjusting portion 26 is formed so as to project upward from the top portion 14c. As shown in FIG. 7, the water level adjusting unit 26 includes a wall 30 that narrows the flow path in the water sealing forming unit 14. The wall 30 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 14. The wall 30 is formed so as to rise upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14 when viewed from the front. The wall 30 is formed so as to rise obliquely backward and upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14. The inclination angle of the front surface 30a of the wall 30 is close to, more preferably substantially the same as the inclination angle of the bottom surface of the rising portion 14b immediately before the top portion 14c. The rear surface 30b of the wall 30 extends downward. Therefore, the wall 30 is formed in a triangular shape in the cross section in the front-rear direction. The wall 30 may be formed in a shape other than a triangular shape in a cross section in the front-rear direction. For example, the wall 30 may be formed so that the wall itself of the water sealing forming portion 14 is narrowed inward, and the wall 30 is formed so as to rise upward from the top portion 14c.

The wall 30 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting portion 26, and the wall 30 is further formed with a notch 32 extending downward from the upper end 30c thereof. The width A1 of the notch 32 in the left-right direction is substantially constant in the up-down direction. The lower portion of the notch 32 is formed by the top 14c. The notch 32 extends from the front surface 30a to the rear surface 30b in the front-rear direction. As shown in FIG. 7, the flow path in the water sealing forming portion 14 is formed in a T shape in the cross section in the left-right direction.

The water level in the drainage body 10 is the amount of water that cannot pass through the notch 32 with respect to the amount of water discharged from the water discharge part 6b in the normal usage mode (the amount of water flowing into the drainage body 10 per unit time). When the water level exceeds the upper end 30c, a flow exceeding the upper end 30c of the wall 30 portion is formed. The wall 30 limits the amount of drainage per unit time passing through the notch 32 when the water level is at a height of 30c or less at the upper end, and the flow exceeds 30c at the upper end when the water level is higher than 30c at the upper end. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 32 (the region cut out by the notch 32) is the width A1 of the notch 32 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 14 and the height h2 of the water level above the upper end 30c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 30.

When the water level exceeds the upper end 30c, the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10) must pass through the first region B1 of the notch 32. Since the drainage water forms a flow that exceeds the upper end 30c of the wall 30 portion, the rise in the water level is suppressed.
When the water level exceeds the upper end 30c, the amount of drainage per unit time that passes through the first region B1 of the notch 32 by the water level adjusting unit 26 is compared with the amount of inflow per unit time that flows into the drainage main body 10. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The total second drainage amount of the inflow amount per unit time flowing into the drainage main body 10 and the drainage amount per unit time passing through the first region B1 and the drainage amount per unit time passing through the second region B2 is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

The ultrasonic cleaning water level W2 is set at a height equal to or higher than the upper end 30c of the wall 30 and lower than the ceiling portion 14e of the top 14c of the sealing water forming portion 14. As described above, the ultrasonic cleaning water level W2 is defined by the relationship between the first region B1 and the second region B2.

The water level adjusting unit 26 is formed so that the ultrasonic cleaning water level W2 is located in the net cage storage unit 12. More preferably, the water level adjusting portion 26 may be formed so as to be located below the inlet portion 12a of the net cage storage portion 12. Further, the water level adjusting unit 26 may be formed so that the ultrasonic cleaning water level W2 is located below the bottom of the net cage 18 in which the ultrasonic cleaning water level W2 is arranged in the net cage storage portion 12. Further, the water level adjusting unit 26 may be formed so that the ultrasonic cleaning water level W2 is at a position equal to or higher than the dirt capturing unit 28. Further, the water level adjusting portion 26 may be formed so that the ultrasonic cleaning water level W2 is located on the inclined portion 34a described later. Further, as a modification, the water level adjusting portion 26 can be formed by means different from the wall 30, for example, an electric solenoid valve, a flow path adjusting valve, or the like. At this time, based on the control device 24 determining the start of water discharge, the control device 24 closes the solenoid valve and the like to raise the water level in the water sealing forming portion 14, and raises the water level to the ultrasonic cleaning water level W2. It may be controlled to raise. Further, for example, the control device 24 controls the opening and closing of the solenoid valve and the like so that the water does not flow back to the sink 4 side when the water level rises to the ultrasonic cleaning water level W2, and the inside of the water sealing forming unit 14 is controlled. The rise in water level may be suppressed.

Next, the dirt trapping unit 28 of the drainage device 1 according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 5.
The dirt trapping portion 28 is formed so that dirt easily adheres to the surface when the water level drops on the dirt trapping section 28. The dirt catching portion 28 includes an edge portion 34 that projects inward from the side wall of the drainage main body portion 10 in a stepped manner, and an inner catching portion 36 that forms a plurality of openings 36a inside the edge portion 34.

The edge portion 34 is formed in a quadrangular outer shape, has a hollow inside, and includes an inclined portion 34a that inclines downward toward the inside. The inclined portion 34a forms a flat surface that descends inward. The edge portion 34 further includes a cylindrical portion 34b extending vertically downward from the inner peripheral end. The cylindrical portion 34b extends below the sealing water level W0. The inclined portion 34a and the inner catching portion 36 of the dirt catching portion 28 form the bottom portion of the net cage storage portion 12. It should be noted that the bottom portion of the net cage storage portion 12 may not be completely or partially inclined. The edge portion 34 is a metal member, for example, a stainless steel member. Therefore, the cylindrical portion 34a of the edge portion 34, which is a metal member, is arranged on the inner wall surface of the drainage main body portion 10 at the position of the sealing water level W0. The edge portion 34 preferably extends below the sealing water level W0 in order to improve the ultrasonic cleaning ability at the position of the sealing water level W0, but the edge portion 34 extends below the sealing water level W0. Even if it is not, if it extends to the vicinity of the sealing water level W0, it has a function of improving a constant ultrasonic cleaning ability at the position of the sealing water level W0. Further, the edge portion 34 has a function of improving a constant ultrasonic cleaning ability even if the edge portion 34 does not extend below the sealing water level W0. Further, the cylindrical portion 34b may be arranged on a part of the entire circumference of the inner wall surface at the position of the sealing water level W0 of the drainage main body portion 10. The outer peripheral side portion of the edge portion 34 may be formed of the same material as the sink 4, and the inner peripheral side portion thereof may be formed of a stainless steel member.

The inner catching portion 36 has a circular outer peripheral shape. The outer circumference of the inner catching portion 36 is connected to the inner circumference of the edge portion 34, and the upper surface of the edge portion 34 and the upper surface of the inner catching portion 36 form a continuous, substantially flush upper surface. The inner catching portion 36 forms a downward slope that is recessed toward the central portion. A plurality of openings 36a of the inner catching portion 36 are formed in a circumferential shape around the central portion. The inner catching portion 36 may form, for example, a cross-shaped structure so as to form a plurality of openings 36a, or may form, for example, a mesh-like structure. The inner catching portion 36 is a metal member, for example, a stainless steel member. The inner catching portion 36 may be made of resin.

Next, the operation (action) of the drainage system provided with the drainage device 1 according to the first embodiment of the present invention described above will be described with reference to FIGS. 8 to 13.
FIG. 8 is a partially enlarged sectional view showing a standby state of the drainage main body of the drainage device according to the first embodiment of the present invention, and FIG. 9 is an inflow of water into the drainage main body of the drainage device according to the first embodiment of the present invention. Is a partially enlarged cross-sectional view showing a state in which is started, and FIG. 10 shows a further inflow of water into the drainage main body portion of the drainage device according to the first embodiment of the present invention, and the water level adjusting portion raises the water level in the sealing water forming portion. FIG. 11 is a partially enlarged cross-sectional view showing a state in which water is further flowed into the drainage main body of the drainage device according to the first embodiment of the present invention, and the water level in the drainage main body reaches the ultrasonic cleaning water level. FIG. 12 is a partially enlarged cross-sectional view showing a state in which the inflow of water into the drainage main body portion of the drainage device according to the first embodiment of the present invention is stopped and the water level in the drainage main body portion gradually decreases. FIG. 13 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.

FIG. 8 shows a standby state before water is discharged from the kitchen faucet device 6. In the standby state, the water level in the drainage main body 10 is the sealing water level W0 at the position of the top 14c of the sealing water forming portion 14. When the water level in the drainage main body 10 becomes the sealed water level W0, the drainage flow path 8 and the inlet portion 12a side and the drainage flow path 8 side of the net cage storage portion 12 are air-blocked in the standby state. It is surely prevented that the odor rises from the drainage channel 8 to the inlet portion 12a. In the standby state, the kitchen faucet device 6 is in a state of being stopped, and the ultrasonic oscillator 22 is also in a state of being stopped.

For example, in the standby state, when the user flows water containing dirt E into the sink 4, this water flows into the drainage main body 10. For example, as shown in FIG. 8, the dirt E is attached to the net cage 18, the net cage storage portion 12, the water sealing forming portion 14, and the like.

As shown in FIG. 9, when water is discharged from the kitchen faucet device 6, as shown by arrow F1, water passes through the gap between the bottom surface 4b of the sink 4 and the bottom surface 4b and the lid 16 to the net cage. It flows into the inlet portion 12a of the storage portion 12. As shown by the arrow F2, the water flowing into the inlet portion 12a passes through the net cage 18 and further flows down. At this time, as shown by the arrow F3, since the top portion 18a of the bottom of the net cage 18 is located at a position separated from the wall surface of the net cage storage portion 12, the water flowing out from the top portion 18a of the lower portion of the net cage 18. However, it becomes easy to flow down in the air separated from the wall surface of the net cage storage portion 12. As shown by arrows F2 and F3, the water flowing down from the net cage 18 passes through the plurality of openings 36a of the inner catching portion 36 of the dirt catching portion 28 and is supplied into the connecting portion 14a of the water sealing forming portion 14.

Since water flows into the drainage main body 10, the water level starts to rise from the sealing water level W0, and as shown by arrow F4, the water exceeding the top 14a of the sealing water forming portion 14 is cut off by the water level adjusting portion 26. It is discharged to the drainage channel 8 side through the notch 32.

Here, the inflow amount per unit time (or the total amount per fixed time) exceeding the first drainage amount per unit time (or the total drainage amount per fixed time) that can pass through the first region B1 of the notch 32 of the water level adjusting unit 26. When the amount of water (inflow amount) flows into the drainage main body 10, the water cannot completely flow out from the notch 32, and the water level in the drainage main body 10 is automatically raised. .. At this time, as shown by the arrow F4, the water flowing out from the notch 32 of the water level adjusting unit 26 flows out to the drainage flow path 8. In this way, the water level automatically rises without the user's operation to raise the water level. Therefore, it is not necessary for the user to close the drain valve or the like provided in the conventional drainage flow path, and water is supplied to the drainage main body 10, so that the drainage main body is based on the configuration of the water level adjusting unit 26. The water level in the portion 10 automatically reaches the ultrasonic cleaning water level W2, and the inner wall surface near the sealing water level W0 and the dirt trapping portion 28 and the like can be automatically ultrasonically cleaned.

Since the water level adjusting unit 26 includes a wall 30 that narrows a part of the flow path, the first drainage amount per unit time can be relatively reduced, and the water level in the rising unit 14b can be reduced by a relatively small amount of water. Can be raised. After that, as shown by the arrow F1, the inflow of water into the drainage main body 10 continues until FIG.

As shown in FIG. 10, the water level adjusting unit 26 relatively easily raises the water level in the drainage main body 10 to the height of the upper end 30c higher than the sealing water level W0 by the water flowing into the drainage main body 10. be able to. Since the first drainage amount per unit time that can pass through the notch 32 is a relatively small flow rate, the water level in the drainage main body 10 rises to the upper end 30c due to the inflow of a relatively small flow rate of water. For example, when water is discharged from the water discharge unit 6b in a normal usage mode, the water level in the drainage main body 10 rises relatively easily to the upper end 30c due to the inflow of water due to the water discharge in such a normal usage mode. ..

As shown in FIG. 11, the water level adjusting unit 26 raises the water level in the drainage main body 10 to the ultrasonic cleaning water level W2 higher than the upper end 30c by the water flowing into the drainage main body 10. When the water level in the drainage main body 10 is higher than the upper end 30c of the wall 30, the second drainage amount per unit time is discharged downstream from the first region B1 and the second region B2. That is, at a height lower than the upper end 30c of the wall 30, water is discharged downstream from the notch 32 between the walls 30. At a height higher than the upper end 30c of the wall 30, water is discharged downstream from the entire width of the sealing water forming portion 14 in the left-right direction so as to get over the upper end 30c. When the water level exceeds the upper end 30c, the inflow amount per unit time that flows into the drainage main body 10 is higher than the first drainage amount per unit time that can be discharged before reaching the upper end 30c. Since the second drainage amount increases, a further rise in the water level can be suppressed. For example, when water is discharged from the water discharge unit 6b in a normal usage mode, the water level in the drainage main body 10 rises to the ultrasonic cleaning water level W2 due to the inflow of water due to the water discharge in such a normal usage mode. It can be suppressed. The usual mode of use is, for example, 2.5 to 15 L / min. It is preferable that the normal usage mode includes the maximum flow rate of water discharged (water discharge when the water discharge opening degree is 100%) defined by the water discharge unit 6b. That is, it is preferable that the water level in the drainage main body 10 can be prevented from overflowing to the water receiving portion even if the water is discharged from the water discharge portion 6b in the water discharge form of the maximum flow rate. For example, even if water is discharged from the water discharge unit 6b in the usage mode of the maximum flow rate (water discharge opening degree), the water level in the drainage main body 10 is also caused by the inflow of water due to the water discharge in the usage mode of the maximum flow rate. , It is suppressed to a height lower than the ceiling portion 14e. When the water level in the drainage body 10 rises to the ultrasonic cleaning water level W2 on the water level adjusting part 26 side, the water level in the drainage body 10 rises from the inner catching part 36 to the edge 34 on the net cage storage part 12 side. Ascend to.

The control device 24 causes the ultrasonic oscillator 22 to oscillate in a state where the water level in the drainage main body 10 has reached the ultrasonic cleaning water level W2. As a result, ultrasonic cleaning can be performed in a state where the vicinity of the sealing water level W0 where dirt easily adheres is flooded, and ultrasonic cleaning can be performed without the user manually cleaning the vicinity of the sealing water level W0 where dirt easily adheres. It can be washed by washing. Further, since the ultrasonic cleaning water level W2 is located above the dirt trapping portion 28, the water level in the drainage main body 10 rises to the vicinity of the ultrasonic cleaning water level W2 from the next time onward. When you do, it is more reliably cleaned by ultrasonic cleaning. The control device 24 oscillates by the ultrasonic oscillator 22 in a state where it is assumed that the ultrasonic cleaning water level W2 has been reached.

Even if water further flows into the drainage body 10 from the state where the water level in the drainage body 10 reaches the ultrasonic cleaning water level W2, the water level in the drainage body 10 is maintained near the ultrasonic cleaning water level W2. To. At this time, the drainage from the water level adjusting unit 26 continues. The ultrasonic cleaning water level W2 is located above the water level adjusting unit 26 on the water level adjusting unit 26 side in the drainage main body 10. The ultrasonic cleaning water level W2 is located in the net cage storage portion 12 and below the inlet portion 12a of the net cage storage portion 12. As a result, when the water level rises and the water level drops after ultrasonic cleaning, even if some dirt that cannot be cleaned by ultrasonic cleaning alone remains in the drainage body 10, for example, on the water surface. A net that allows the user to easily clean the area where dirt remains on the wall surface of the drainage body 10 while suppressing the area where dirt that floats on the surface adheres to the wall surface and remains on the wall surface. It can be controlled in the car storage unit 12.

The ultrasonic cleaning water level W2 includes an inclined portion 34a whose edge portion 34 is inclined inward, and is located on the inclined portion 34a on the net cage storage portion 12 side in the drainage main body portion 10. Since the inclined portion 34a is formed so as to incline inward, dirt such as dust flowing into the drainage device 1 can be prevented from staying at the edge portion 34, and deterioration of drainage performance due to the edge portion 34 can be suppressed. Since the ultrasonic cleaning water level is located on the inclined portion 34a, dirt can be effectively attached to the inclined portion 34a.

The ultrasonic cleaning water level W2 is located below the bottom of the net cage 18 arranged in the net cage storage portion 12 on the net cage storage portion 12 side in the drainage main body 10. Therefore, since the bottom portion of the net cage 18 is less likely to be flooded, deterioration of the cleanability of the net cage 18 can be suppressed.

As shown in FIG. 12, when the inflow of water into the drainage main body 10 is completed, the second drainage amount per unit time is discharged downstream from the first region B1 and the second region B2, and the drainage main body 10 The water level inside automatically starts to drop from the ultrasonic cleaning water level W2. Therefore, the water level on the net cage storage portion 12 side in the drainage main body portion 10 gradually drops from the inclined portion 34a of the edge portion 34 of the dirt catching portion 28. The dirt trapping portion 28 is formed so that dirt easily adheres (adsorbs) to the surface when the water level drops along the surface of the inclined portion 34a of the edge portion 34 of the dirt trapping portion 28. As a result, at least a part of the dirt that is difficult to remove by ultrasonic cleaning (for example, it floats on water after ultrasonic cleaning) is removed from the dirt trapping unit 28 when the water level drops along the surface of the dirt trapping unit 28. It can be attached on the surface of the inclined portion 34a.

When the water level in the drainage main body 10 further drops, the water level on the net cage storage portion 12 side in the drainage main body 10 gradually drops from the edge portion 34 of the dirt catching portion 28 to the inner catching portion 36. When the water level drops along the surface of the inner catching portion 36 of the dirt catching portion 28, the dirt floating on the water surface can be further adhered to the inner catching portion 36. Therefore, more dirt can be attached to the dirt catching portion 28 than when the dirt catching portion 28 includes only the edge portion 34. Dirt floating on the water surface is relatively easy to approach the inner wall surface side in the drainage main body 10 due to surface tension or the like, and the dirt approaching the inner wall surface side is adhered from the edge portion 34 to the inner catching portion 36. Therefore, it is possible to reduce the dirt flowing out to the downstream side of the dirt trapping unit 28 and prevent the dirt from remaining on the wall surface of the drainage main body 10 on the downstream side of the dirt catching part 28. Thereby, the dirt in the entire drainage device 1 can be efficiently reduced.

As shown in FIG. 13, when the water level in the drainage main body 10 drops to the sealing water level W0, the outflow of water from the notch 32 ends, and the drainage device 1 returns to the standby state.

Next, with reference to FIG. 14, a first modification of the water level adjusting portion of the drainage device according to the first embodiment of the present invention described above will be described. Regarding the first modification of the water level adjusting unit 126 of the drainage device 1 according to the first embodiment of the present invention, only the differences from the water level adjusting unit 26 of the drainage device 1 according to the first embodiment will be described, and the same parts will have the same reference numerals. The description is omitted by adding. The operation (action) of the first modification of the water level adjusting unit 126 of the drainage device 1 according to the first embodiment of the present invention is the same as the operation (action) of the water level adjusting unit 26 of the drainage device 1 according to the first embodiment. Since there is, the description is omitted.
FIG. 14 is a cross-sectional view showing the water level adjusting portion of the drainage device of the first modification according to the first embodiment of the present invention at the same position as that of FIG. 7.

The structure of the water level adjusting portion of the drainage device of the first modification is different from the structure of the water level adjusting portion of the drainage device according to the first embodiment of the present invention.
In the drainage device 1, the water level in the drainage main body 10 is higher than the sealing water level W0 in the sealing water forming portion 14 to the sealing water level W0 in the sealing water forming portion 14 due to the water flowing into the draining main body 10. The water level adjusting unit 126, which is a flow rate adjusting unit formed so as to easily rise to the sonic cleaning water level W2, is provided.
In the water level adjusting unit 126, when the water level in the drainage main body 10 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage main body 10 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.
In the water level adjusting unit 126, in particular, when the water level in the drainage main body 10 is between the sealed water level W0 and the upper end 30c of the wall 130 described later, the amount of drainage to the downstream side is the water level in the drainage main body 10. It is formed so as to be less than the amount of drainage to the downstream side when the ultrasonic cleaning water level W2 is reached.

The water level adjusting unit 126 includes a wall 130 that narrows the flow path in the water sealing forming unit 14. The wall 130 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 14. The wall 130 is formed so as to rise upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14 when viewed from the front. The wall 130 is formed so as to rise obliquely backward and upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14.

As shown in FIG. 14, the wall 130 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting portion 126, and the wall 130 is further formed with a notch 132 extending downward from the upper end 30c thereof. ing. The width A1 of the notch 132 in the left-right direction becomes wider as it goes downward in the up-down direction. The notch 132 forms a structure in which the top of the triangle is cut off by a line parallel to the base in front view, for example, a trapezoidal first region B1. The lower part of the notch 132 is formed by the top 14c. The notch 132 extends from the front surface 30a to the rear surface 30b in the front-rear direction.

The water level in the drainage body 10 is the amount of water that cannot pass through the notch 132 with respect to the amount of water discharged from the water discharge part 6b in the normal usage mode (the amount of water flowing into the drainage body 10 per unit time). When the water level exceeds the upper end 30c, a flow exceeding the upper end 30c is formed. The wall 130 limits the amount of drainage per unit time passing through the notch 32 when the water level is at a height of 30c or less at the upper end, and the flow exceeds 30c at the upper end when the water level is higher than 30c at the upper end. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 132 (the region cut out by the notch 32) is the width A1 of the notch 32 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 14 and the height h2 of the water level above the upper end 30c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 30.

When the water level exceeds the upper end 30c, the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10) must pass through the first region B1 of the notch 132. Since the drainage water forms a flow beyond the upper end 30c of the wall 130 portion, the rise in water level is suppressed.
When the water level exceeds the upper end 30c, the amount of drainage per unit time that passes through the first region B1 of the notch 132 by the water level adjusting unit 126 is compared with the amount of inflow per unit time that flows into the drainage main body 10. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The total second drainage amount of the inflow amount per unit time flowing into the drainage main body 10 and the drainage amount per unit time passing through the first region B1 and the drainage amount per unit time passing through the second region B2 is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

The ultrasonic cleaning water level W2 is set at a height of 30c or higher at the upper end of the wall 130 and lower than the ceiling portion 14e of the top 14c of the sealing water forming portion 14. As described above, the ultrasonic cleaning water level W2 is defined by the relationship between the first region B1 and the second region B2.

Next, with reference to FIG. 15, a second modification of the water level adjusting portion of the drainage device according to the first embodiment of the present invention described above will be described. The water level adjusting unit 226 of the second modification of the drainage device 1 according to the first embodiment of the present invention will be described only in that it differs from the water level adjusting unit 26 of the drainage device 1 according to the first embodiment, and the same parts have the same reference numerals. The description is omitted by adding. The operation (action) of the water level adjusting unit 226 of the second modification of the drainage device 1 according to the first embodiment of the present invention is the same as the operation (action) of the water level adjusting unit 26 of the drainage device 1 according to the first embodiment. Since there is, the description is omitted.
FIG. 15 is a cross-sectional view showing the water level adjusting portion of the drainage device of the second modification according to the first embodiment of the present invention in the same cross-sectional view as in FIG. 7.

The structure of the water level adjusting portion of the drainage device of the first modification is different from the structure of the water level adjusting portion of the drainage device according to the first embodiment of the present invention.
In the drainage device 1, the water level in the drainage main body 10 is higher than the sealing water level W0 in the sealing water forming portion 14 to the sealing water level W0 in the sealing water forming portion 14 due to the water flowing into the draining main body 10. The water level adjusting unit 226, which is a flow rate adjusting unit formed so as to easily rise to the sonic cleaning water level W2, is provided.
In the water level adjusting unit 226, when the water level in the drainage main body 10 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage main body 10 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.

The water level adjusting unit 226 includes a wall 230 that narrows the flow path in the water sealing forming unit 14. The wall 230 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 14. The wall 230 is formed so as to rise upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14 when viewed from the front. The wall 230 is formed so as to rise obliquely backward and upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14.

As shown in FIG. 15, the wall 230 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting portion 226, and the wall 230 is further formed with a notch 232 extending downward from the upper end 30c thereof. ing. The width A1 of the notch 232 in the left-right direction becomes narrower in the vertical direction toward the lower side. The notch 232 forms a first region B1 having an inverted triangular shape when viewed from the front. The lower part of the notch 232 is formed by the top 14c. The notch 232 extends from the front surface 30a to the rear surface 30b in the front-rear direction.

The water level in the drainage body 10 is the amount of water that cannot pass through the notch 232 with respect to the amount of water discharged from the water discharge part 6b in the normal usage mode (the amount of water flowing into the drainage body 10 per unit time). When the water level exceeds the upper end 30c, a flow exceeding the upper end 30c is formed. The wall 230 limits the amount of drainage per unit time passing through the notch 232 when the water level is at a height of 30c or less at the upper end, and the flow exceeds 30c at the upper end when the water level exceeds 30c at the upper end. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 232 (the region cut out by the notch 232) is the width A1 of the notch 232 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 14 and the height h2 of the water level above the upper end 30c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 230.

When the water level exceeds the upper end 30c, the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10) must pass through the first region B1 of the notch 232. Since the drainage water forms a flow beyond the upper end 30c of the wall 230 portion, the rise in water level is suppressed.
When the water level exceeds the upper end 30c, the amount of drainage per unit time that passes through the first region B1 of the notch 232 by the water level adjusting unit 226 is compared with the amount of inflow per unit time that flows into the drainage main body 10. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The total second drainage amount of the inflow amount per unit time flowing into the drainage main body 10 and the drainage amount per unit time passing through the first region B1 and the drainage amount per unit time passing through the second region B2 is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

Next, a third modification of the water level adjusting portion of the drainage device according to the first embodiment of the present invention described above will be described with reference to FIG. Only the difference between the water level adjusting unit 326 of the drainage device 1 according to the first embodiment of the present invention and the water level adjusting unit 26 of the drainage device 1 according to the first embodiment will be described, and the same parts will have the same reference numerals. The description is omitted by adding. The operation (action) of the water level adjusting unit 326 of the drainage device 1 according to the first embodiment of the present invention is the same as the operation (action) of the water level adjusting unit 26 of the drainage device 1 according to the first embodiment. Since there is, the description is omitted.
FIG. 16 is a cross-sectional view showing the water level adjusting portion of the drainage device of the third modification according to the first embodiment of the present invention in the same cross-sectional view as in FIG. 7.

The structure of the water level adjusting portion of the drainage device of the third modification is different from the structure of the water level adjusting portion of the drainage device according to the first embodiment of the present invention.
In the drainage device 1, the water level in the drainage main body 10 is higher than the sealing water level W0 in the sealing water forming portion 14 to the sealing water level W0 in the sealing water forming portion 14 due to the water flowing into the draining main body 10. A water level adjusting unit 326, which is a flow rate adjusting unit formed so as to easily rise to the sonic cleaning water level W2, is provided.
In the water level adjusting unit 326, when the water level in the drainage body 10 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage body 10 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.

The water level adjusting unit 326 includes a wall 330 that narrows the flow path in the water sealing forming unit 14. The wall 330 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 14. The wall 330 is formed so as to rise upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14 when viewed from the front. The wall 330 is formed so as to rise obliquely backward and upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14.

As shown in FIG. 16, the wall 330 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting unit 326, and further extends upward from the lower end of the wall 330 and forms a quadrangular opening. A notch 332 is formed. The width A1 of the notch 332 in the left-right direction is substantially constant in the up-down direction. The notch 332 forms a quadrangular first region B1 when viewed from the front. The lower part of the notch 332 is formed by the top 14c. The notch 332 extends from the front surface 30a to the rear surface 30b in the front-rear direction. The notch 332 may be an opening formed in the wall 330 in a circular shape, an elliptical shape, or the like.

The water that cannot pass through the notch 332 with respect to the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time that flows into the drainage main unit 10) in the normal usage mode is the water level in the drainage main unit 10. When the water level exceeds the upper end 30c, a flow exceeding the upper end 30c is formed. The wall 330 limits the amount of drainage per unit time through the notch 332 when the water level is at a height of 30c or less at the upper end, and the flow exceeds 30c at the upper end when the water level exceeds 30c at the upper end. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 332 (the region cut out by the notch 332) is the width A1 of the notch 332 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 14 and the height h2 of the water level above the upper end 30c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 330.

When the water level exceeds the upper end 30c, it must pass through the first region B1 of the notch 332 with respect to the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10). The rise in water level is suppressed because the drainage water forms a flow that exceeds the upper end 30c of the wall 330 portion.
When the water level exceeds the upper end 30c, the amount of drainage per unit time that flows into the drainage main body 10 and the amount of drainage per unit time that passes through the first region B1 of the notch 332 by the water level adjusting unit 326 The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The total second drainage amount of the inflow amount per unit time flowing into the drainage main body 10 and the drainage amount per unit time passing through the first region B1 and the drainage amount per unit time passing through the second region B2 is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

Next, a fourth modification of the water level adjusting portion of the drainage device according to the first embodiment of the present invention described above will be described with reference to FIG. Only the difference between the water level adjusting unit 426 of the drainage device 1 according to the first embodiment of the present invention and the water level adjusting unit 26 of the drainage device 1 according to the first embodiment will be described, and the same parts will have the same reference numerals. The description is omitted by adding. The operation (action) of the water level adjusting unit 426 of the drainage device 1 according to the first embodiment of the present invention is the same as the operation (action) of the water level adjusting unit 26 of the drainage device 1 according to the first embodiment. Since there is, the description is omitted.
FIG. 17 is a cross-sectional view showing the water level adjusting portion of the drainage device of the fourth modification according to the first embodiment of the present invention in the same cross-sectional view as in FIG. 7.

The structure of the water level adjusting portion of the drainage device of the fourth modification is different from the structure of the water level adjusting portion of the drainage device according to the first embodiment of the present invention.
In the drainage device 1, the water level in the drainage main body 10 is higher than the sealing water level W0 in the sealing water forming portion 14 to the sealing water level W0 in the sealing water forming portion 14 due to the water flowing into the draining main body 10. A water level adjusting unit 426, which is a flow rate adjusting unit formed so as to easily rise to the sonic cleaning water level W2, is provided.
In the water level adjusting unit 426, when the water level in the drainage main body 10 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage main body 10 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.

The water level adjusting unit 426 includes a wall 430 that narrows the flow path in the water sealing forming unit 14. The wall 430 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 14. The wall 430 is formed so as to rise upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14 when viewed from the front. The wall 430 is formed so as to rise obliquely backward and upward from the bottom surface of the top 14c of the flow path in the water sealing forming portion 14.

As shown in FIG. 17, the wall 430 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting unit 426, and the wall 430 is further provided with a rectangular opening extending up and down on the left-right side thereof. The notch 432 to be formed is formed. The width A1 represented by the total value of the widths of the notches 432 on the left and right sides in the left-right direction is substantially constant in the up-down direction. The notch 432 forms a first region B1 which is a quadrangular first region on both the left and right sides of the wall 430 in front view. The lower part of the notch 432 is formed by the top 14c. The notch 432 extends from the front surface 30a to the rear surface 30b in the front-rear direction.

The water level in the drainage body 10 is the amount of water that cannot pass through the notch 432 with respect to the amount of water discharged from the water discharge part 6b in the normal usage mode (the amount of water flowing into the drainage body 10 per unit time). When the water level exceeds the upper end 30c, a flow exceeding the upper end 30c is formed. The wall 430 limits the amount of drainage for a unit time passing through the notch 432 when the water level is at a height of 30c or less at the upper end, and the flow exceeds 30c at the upper end when the water level exceeds 30c at the upper end. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 432 (the region cut out by the notch 432) is the width A1 of the notch 432 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 14 and the height h2 of the water level above the upper end 30c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 430.

When the water level exceeds the upper end 30c, it must pass through the first region B1 of the notch 432 with respect to the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10). No water forms a flow beyond the upper end 30c of the wall 430 portion, thus suppressing the rise in water level.
When the water level exceeds the upper end 30c, the amount of drainage per unit time that passes through the first region B1 of the notch 432 by the water level adjusting unit 426 is compared with the amount of inflow per unit time that flows into the drainage main body 10. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The total second drainage amount of the inflow amount per unit time flowing into the drainage main body 10 and the drainage amount per unit time passing through the first region B1 and the drainage amount per unit time passing through the second region B2 is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

According to the drainage device 1 according to the first embodiment of the present invention described above, in the water level adjusting unit 26, the water level in the drainage main body 10 is sealed in the water seal forming unit 14 by the water flowing into the drainage main body 10. It is formed so as to easily rise from the water water level W0 to the ultrasonic cleaning water level W2 higher than the sealing water level W0 in the sealing water forming portion 14. Further, in the water level adjusting unit 26, the amount of drainage per unit time to the downstream side from the sealed water level W0 to the ultrasonic cleaning water level W2 when the water level in the drainage main body 10 is determined by the water level in the drainage main body 10. It is formed so as to be less than the amount of drainage per unit time to the downstream side when the ultrasonic cleaning water level W2 is reached. As a result, the water level in the drainage main body 10 is raised to the ultrasonic cleaning water level W2, and ultrasonic cleaning can be easily performed up to the ultrasonic cleaning water level W2 higher than the sealing water level W0, and the water level in the drainage main body 10 is raised. It can be made difficult to rise above the ultrasonic cleaning water level W2. Further, water can flow to the drainage main body 10 even during ultrasonic cleaning. Therefore, according to the configuration as described above, the water level in the drainage main body 10 is ultrasonically cleaned higher than the sealing water level W0 in order to clean the dirt in the vicinity of the sealing water level W0 in the drainage main body 10 by ultrasonic cleaning. It is possible to easily raise the water level to W2 and prevent the water in the drainage main body 10 from overflowing to the sink 4 beyond the ultrasonic cleaning water level W2.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the water level in the drainage main body 10 is raised to the ultrasonic cleaning water level W2 by the wall 30 that narrows the flow path in the sealing water forming portion 14, and the sealing is performed. The ultrasonic cleaning can be easily performed up to the ultrasonic cleaning water level W2 higher than the water water level W0, and the water level in the drainage main body 10 can be prevented from rising beyond the ultrasonic cleaning water level W2. Therefore, according to the above-described configuration, the water level in the drainage main body 10 is sealed in order to clean the dirt near the sealing water level W0 in the drainage main body 10 by ultrasonic cleaning with a relatively simple structure. It is possible to easily raise the water level to the ultrasonic cleaning water level W2, which is higher than the water level W0, and to prevent the water in the drainage main body 10 from overflowing to the sink 4 beyond the ultrasonic cleaning water level W2.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the wall 30 of the water level adjusting portion 26 is formed so as to rise upward from the sealing water level regulating portion that regulates the sealing water level. A notch 32 extending in the left-right direction with respect to the main water flow direction and further extending downward from the upper end 30c of the wall 30 is formed. As a result, the water level in the drainage main body 10 rises from the sealing water level W0 to the ultrasonic cleaning water level W2, as compared with the case where the notch 32 is formed on the wall 30 at a position separated from the upper end 30c. It is possible to suppress the continuity of the water level rise change rate from being impaired (the rise rate fluctuates rapidly), and to raise the water level at a relatively constant water level rise change rate for a relatively constant inflow.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the notch 32 formed in the wall 30 of the water level adjusting portion 26 is formed so that the width in the left-right direction is substantially constant in the up-down direction. ing. As a result, when the water level in the drainage main body 10 drops to the sealed water level W0, it is possible to prevent the drainage flow rate from dropping as the water level drops. Therefore, when the water level in the drainage main body 10 drops to the vicinity of the sealed water level W0, the dirt floating on the water surface can be discharged from the notch 32 to the downstream side, and the discharge performance of the dirt floating on the water surface deteriorates. Can be suppressed. Further, since the notch 32 of the wall 30 is formed by a relatively simple structure, it is possible to prevent dirt from adhering to the notch 32 of the wall 30 and causing clogging.
If the width of the notch 32 in the left-right direction becomes narrower as it goes downward, the water level will reach the vicinity of the sealed water level W0, although it will have a certain effect on the above-mentioned rise in water level and suppression of water overflow. When the water level drops, the drainage flow rate decreases as the water level decreases, and the discharge performance of dirt floating on the water surface may decrease.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the width A1 in the left-right direction of the notch 32 formed in the wall 30 of the water level adjusting portion 26 becomes wider in the vertical direction toward the lower side. As a result, when the water level in the drainage main body 10 drops to the sealed water level W0, it is possible to prevent the drainage flow rate from dropping as the water level drops. Therefore, when the water level in the drainage main body 10 drops to the vicinity of the sealed water level W0, the dirt floating on the water surface can be discharged from the notch 32 to the downstream side, and the discharge performance of the dirt floating on the water surface deteriorates. Can be suppressed.

Further, according to the drainage device 1 according to the first embodiment of the present invention, the water level adjusting unit 26 is more than the bottom of the net cage 18 in which the ultrasonic cleaning water level W2 is arranged in the drainage main body portion 10. It is formed so as to be located on the lower side. As a result, when the ultrasonic cleaning water level W2 is located below the bottom of the net cage 18, the ultrasonic cleaning water level W2 is located above the bottom of the net cage 18, as compared with the case where the ultrasonic cleaning water level W2 is located above the bottom of the net cage 18. The amount of water per unit time in the drainage main body 10 during cleaning is reduced, and the sound pressure of ultrasonic waves acting on the wall 30 near the sealing water level W0 where dirt is likely to remain can be made relatively high, and the sealing water level near W0. Ultrasonic cleaning ability can be improved.

Next, the drainage device according to the second embodiment of the present invention will be described with reference to FIG. The second embodiment is an example in which the drainage device according to the present invention is formed by a so-called bottle trap. FIG. 18 is a central sectional view of the drainage device according to the second embodiment of the present invention, and FIG. 19 is a sectional view taken along the XIX-XIX line of FIG.

Since the drainage device 501 according to the second embodiment has a similar basic structure to the drainage device 1 according to the first embodiment described above, only the points different from the first embodiment of the second embodiment of the present invention will be described. , The same reference numerals are given to the drawings for similar parts, and the description thereof will be omitted. The operation (action) of the drainage device 501 according to the second embodiment of the present invention is the same as the operation (action) of the drainage system 2 according to the first embodiment, and thus the description thereof will be omitted.

The drainage main body 510 is provided on the downstream side of the sink 4 and is provided on the downstream side of the net cage storage portion 12 in which the net cage is stored and the net cage storage portion 12 and forms a water seal. It is provided with a unit 514.
Hereinafter, in the description of the first embodiment of the present invention, the upstream side is the front side and the opposite side to the upstream side is the rear side with respect to the main water flow direction reaching the water level adjustment unit 526, and the water level adjustment unit 526 The direction of the main water flow to reach is described with the right side as the right side when viewed from the front and the left side as the left side when viewed from the front.

As shown in FIG. 18, the inlet portion 12a and the intermediate portion 12b of the net cage storage portion 12 have a flow path diameter larger than that of the water sealing forming portion 514.

The water seal forming unit 514 has a function of draining the water discharged to the sink 4 and storing a part of the inflowed water to form a normal water seal at the water seal water level W0 inside the sink 4.

The water seal forming unit 514 forms a trap-shaped flow path that forms a water seal at the water seal water level W0. The water sealing forming portion 514 has a connecting portion 514a connected to the outlet portion 12c of the net cage storage portion 12 and an ascending portion 514b which is an ascending flow path that rises diagonally upward toward the downstream side so as to form a drain trap. The top portion 514c, which is a folded-back portion between the ascending portion 514b and the descending portion 514d, and the descending portion 514d, which is a descending flow path provided on the downstream side of the ascending portion 514b and descending from the top portion 514c, are provided. .. The connecting portion 514a forms a tubular descending flow path extending downward from the top portion 514c. Therefore, the sealing water forming portion 514 forms a trap-shaped flow path that folds upward from the connecting portion 514a extending downward to the rising portion 514b, and the top portion 514c defines the sealing water level W0. In this way, the water sealing forming portion 514 forms a so-called bottle trap. The lowering portion 514d extends substantially downward in the vertical direction and is connected to the drainage flow path 8. The water sealing forming portion 514 forms a flow path of the drain trap as a flow path on the drainage flow path 8 side, and the inner diameter of the flow path is small, the shape of the flow path is complicated, and the depth of the flow path is high. By having any one of the elements such as deep or a combination of at least a part of these elements, it is difficult for the user to put his / her fingers in and clean it as compared with the net cage storage unit 12.

In the drainage device 501, the water level in the drainage main body 510 is further changed from the sealing water level W0 in the sealing water forming portion 514 to the sealing water level W0 in the sealing water forming portion 514 due to the water flowing into the draining main body 510. It is provided with a water level adjusting unit 526 which is a flow rate adjusting unit formed so as to easily rise to a high ultrasonic cleaning water level W2, and a dirt catching unit 28 formed at the bottom of the net cage storage unit 512.

Next, the water level adjusting unit of the drainage device according to the first embodiment of the present invention will be described with reference to FIGS. 18 and 19.
In the water level adjusting unit 526, for example, when the water flowing into the drainage main body 510 is equal to or higher than a predetermined flow rate, the water level in the drainage main body 510 is changed to the sealing water forming unit 514 by the water flowing into the drainage main body 510. It is formed so as to easily rise from the sealing water level W0 of the above to the ultrasonic cleaning water level W2 higher than the sealing water level W0 in the sealing water forming portion 514. The water level adjusting unit 526 is arranged in the water sealing forming portion 514 that forms a single flow path from the inlet portion (inlet portion 12a) to the outlet portion (connecting portion with the drainage flow path 8) in the drainage main body portion 510. Adjust the water level by doing so.
In the water level adjusting unit 526, when the water level in the drainage main body 510 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage main body 510 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.

The water level adjusting portion 526 is formed at the top portion 514c, which is a sealing water level regulating portion that regulates the sealing water level of the drain trap of the sealing water forming portion 514. More specifically, the water level adjusting portion 526 is formed so as to project upward from the top portion 514c.
The water level adjusting unit 526 includes a wall 530 that narrows the flow path in the water sealing forming unit 514. The wall 530 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 514. The wall 530 is formed so as to rise upward from the bottom surface of the top portion 514c of the flow path in the water sealing forming portion 514 when viewed from the front. The wall 530 is formed so as to rise obliquely backward and upward from the bottom surface of the top portion 514c of the flow path in the water sealing forming portion 514. The wall 530 is formed from the sealing water level W0 to the vicinity of the ultrasonic cleaning water level W2. The inclination angle of the front surface 530a of the wall 530 is larger than the inclination angle of the bottom surface of the rising portion 514b immediately before the top portion 514c. The rear surface 530b of the wall 530 extends downward. Therefore, the wall 530 is formed in a triangular shape in the cross section in the front-rear direction. The wall 530 may be formed in a shape other than the triangular shape in the cross section in the front-rear direction. In addition, for example, the wall 530 may be formed so that the wall itself of the water sealing forming portion 514 is narrowed inward, and the wall 530 is formed so as to rise upward from the top portion 514c.

As shown in FIG. 19, the wall 530 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting unit 526, and the wall 530 is further formed with a notch 532 extending downward from its upper end 530c. ing. The width A1 of the notch 532 in the left-right direction is substantially constant in the up-down direction. The lower part of the notch 532 is formed by the top 514c. The notch 532 extends from the front surface 530a to the rear surface 530b in the front-rear direction.

The water level in the drainage body 510 is the amount of water that cannot pass through the notch 532 with respect to the amount of water discharged from the water discharge part 6b in the normal usage mode (the amount of water flowing into the drainage body 510 per unit time). When the water level exceeds the upper end 530c, a flow exceeding the upper end 530c of the wall 530 portion is formed. The wall 530 limits the amount of drainage per unit time through the notch 532 when the water level is at a height of 530c or less at the upper end, and the flow exceeds 530c at the upper end when the water level exceeds 530c at the upper end. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 532 (the region cut out by the notch 32) is the width A1 of the notch 532 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 514 and the height h2 of the water level above the upper end 30c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 30.

When the water level exceeds the upper end 530c, the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10) cannot pass through the first region B1 of the notch 532. The rise in water level is suppressed because the drainage water forms a flow that exceeds the upper end 530c of the wall 530 portion.
When the water level exceeds the upper end 530c, the amount of drainage per unit time that passes through the first region B1 of the notch 532 by the water level adjusting unit 526 is compared with the amount of inflow per unit time that flows into the drainage main body 510. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The second drainage amount, which is the sum of the inflow amount per unit time flowing into the drainage main body 510, the drainage amount per unit time passing through the first region B1, and the drainage amount per unit time passing through the second region B2, is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

The ultrasonic cleaning water level W2 is set at a height of 530c or higher at the upper end of the wall 530 and lower than the ceiling portion 514e of the sealing water forming portion 514. As described above, the ultrasonic cleaning water level W2 is defined by the relationship between the first region B1 and the second region B2.

The water level adjusting unit 526 is formed so that the ultrasonic cleaning water level W2 is located in the net cage storage unit 12. More preferably, the water level adjusting portion 526 may be formed so as to be located below the inlet portion 12a of the net cage storage portion 12. Further, the water level adjusting unit 526 is formed so that the ultrasonic cleaning water level W2 is located below the bottom of the net cage 18 in which the ultrasonic cleaning water level W2 is arranged in the net cage storage portion 12. Further, the water level adjusting unit 526 may be formed so that the ultrasonic cleaning water level W2 is at a position equal to or higher than the dirt capturing unit 28. Further, the water level adjusting portion 526 may be formed so that the ultrasonic cleaning water level W2 is located on the inclined portion 34a. Further, as a modification, the water level adjusting unit 526 can be formed by means different from the wall 530, for example, an electric solenoid valve, a flow path adjusting valve, or the like. At this time, based on the control device 24 determining the start of water discharge, the control device 24 closes the solenoid valve and the like to raise the water level in the water sealing forming portion 514, and raises the water level to the ultrasonic cleaning water level W2. It may be controlled to raise to. Further, for example, the control device 24 controls the opening and closing of the solenoid valve and the like so that the water does not flow back to the sink 4 side when the water level rises to the ultrasonic cleaning water level W2, and the inside of the water sealing forming portion 514. The rise in water level may be suppressed.

The drainage device 1 according to the present invention may be formed in a so-called one-trap structure as a further modification. In this one trap, a water level adjusting portion is formed at the upper end of the drainage pipe that is connected to the drainage flow path 8 and rises upward. A bowl-shaped body (cap) is arranged so as to cover the upper part of the drainage pipe line and the water level adjusting portion, and a drainage trap is formed between the drainage pipe line and the bowl-shaped body. For example, the water level adjusting portion is formed by a concave notch formed downward from the circumferential upper end of the drainage pipe. The sealing water level W0 is defined by the lower end of the concave notch of the water level adjusting portion.

Next, the drainage device according to the third embodiment of the present invention will be described with reference to FIGS. 20 to 22. The third embodiment is an example in which the drainage device according to the present invention is applied to the washing floor of a bathroom. FIG. 20 is a perspective view of a bathroom provided with a drainage device according to a third embodiment of the present invention and a drainage device according to a fourth embodiment. FIG. 21 is a partially enlarged cross-sectional view of a portion near the floor surface of the bathroom as viewed along the line XXI-XXI of FIG. 20, and FIG. 22 is a partially enlarged cross-sectional view of the portion of XXII of FIG.

Since the drainage device 601 according to the third embodiment has a similar basic structure to the drainage device 1 according to the first embodiment described above, in the third embodiment of the present invention, only the difference from the first embodiment is observed. The same reference numerals will be given to the drawings for similar parts, and the description thereof will be omitted. The operation (action) of the drainage device 601 according to the third embodiment of the present invention is the same as the operation (action) of the drainage device 1 according to the first embodiment, and thus the description thereof will be omitted.

The drainage device 601 is a bathroom faucet that discharges water (hot water) to the washing place floor 604, which is a water receiving part provided in the bathroom 602, the bathtub 605, which is a water receiving part provided in the bathroom 602, and the washing place floor 604. Washroom side faucet device (water spouting part) 606, which is a device (bathroom faucet), and shower faucet device (bathroom faucet), which is a bathroom faucet device (bathroom faucet) that discharges water (hot water) to the washroom floor 604 or bathtub 605 (Water discharge unit) 607, a bathtub side faucet device 709 which is a supply device for discharging water (hot water) to the bathtub 605, and a drainage main body unit 610 connected to the downstream end of the bottom 604a of the washing place floor 604. ing. The washroom floor 604 is formed so as to discharge the water discharged from the washroom side faucet device 606 and / or the shower faucet device 607 to the downstream side.

The washing place side faucet device 606 and the shower faucet device 607 are connected to the water supply channel 9 to which water is supplied from the water supply source (not shown) and the hot water supply channel 11 to which hot water is supplied on the upstream side. .. The washing place side faucet device 606 and the shower faucet device 607 are provided with a hot water mixing faucet 6a, mix water from the water supply channel 9 and hot water from the hot water supply channel 11, and discharge water from the water discharge units 606b and 607b. .. The water supply channel 9 and the hot water supply channel 11 are connected to the hot water mixing tap 6a, and the water discharge side flow path 6c extends downward from the hot water mixing tap 6a, passes through the flow rate sensor 20 described later, and extends to the water discharge portions 606b and 607b. ing.

As shown in FIG. 21, the drainage main body 610 is provided on the downstream side of the washing place floor 604 and is configured to form a water seal.
The drainage main body 610 is provided on the downstream side of the washing place floor 604, and is provided on the downstream side of the net cage storage portion 612 in which the net cage is stored and the net cage storage portion 612, and also forms a sealing water. It includes a forming portion 614.
Hereinafter, in the description of the third embodiment of the present invention, the upstream side is the front side and the opposite side to the upstream side is the rear side with respect to the main water flow direction reaching the water level adjustment unit 626, and the water level adjustment unit 626 The direction of the main water flow to reach is described with the right side as the right side when viewed from the front and the left side as the left side when viewed from the front.

The net cage storage portion 612 is formed in a size that accommodates the net cage 18 that is a hair catcher. The net cage storage portion 612 includes an inlet portion 612a opened on the washing place floor 604 side, an intermediate portion 612b in which the net cage is stored, and an outlet portion in which the flow path diameter is reduced from the intermediate portion toward the water sealing forming portion 614. It is equipped with 612c.

The entrance portion 612a of the net basket storage portion 612 is opened in a square shape to form a drainage port portion of the washing place floor 604. The inlet portion 612a is formed by a part of the bottom portion 604a recessed below the bottom surface. The inlet portion 612a has a larger flow path diameter than the water sealing forming portion 614. The intermediate portion 612b of the net cage storage portion 612 is formed in a circular tubular shape so that the net cage can be arranged inside. The intermediate portion 612b has a larger flow path diameter than the water sealing forming portion 614. The outlet portion 612c of the net cage storage portion 612 is formed at the lower end portion of the net cage storage portion 612. The outlet portion 612c forms an inwardly flat portion. The outlet portion 612c is connected to the water sealing forming portion 614. The outlet portion 612c has a flow path diameter larger than that of the water seal forming portion 614, and is formed so as to narrow the flow path from the intermediate portion 612b to the water seal forming portion 614. The inlet portion 612a, the intermediate portion 612b and the outlet portion 612c form a vertical wall. The net cage storage portion 12 has a flow path diameter larger than that of the water sealing forming portion 614, so that the user can easily see the inside and the user can easily insert his / her fingers to clean the inside. Here, the net cage storage unit 612 is configured such that the net cage 18 is removed from the net cage storage portion 612 by the user in order to dispose of the dust collected in the net cage 18. Further, the net cage storage unit 612 is configured so that the net cage 18 after the waste is discarded by the user can be attached to the net cage storage unit 612. That is, the net cage storage unit 612 is configured so that the user can relatively easily insert his / her fingers to perform operations such as removing and attaching the net cage 18. As described above, since the net cage storage portion 612 is configured so that the user's fingers can be easily inserted, the inside of the net cage storage portion 612 is relatively easily cleaned by the user's fingers. The outlet portion 612c of the net cage storage portion 612 may not be formed so that the flow path diameter is reduced, and the flow path diameter may be further reduced by another member on the downstream side.

The water seal forming unit 614 has a function of draining the water discharged to the washing place floor 604, storing a part of the inflowed water, and forming a normal water seal inside the water seal water level W0. ..

The water seal forming unit 614 forms a trap-shaped flow path that forms a water seal at the water seal water level W0. The water sealing forming portion 614 has a connecting portion 614a connected to the outlet portion 612c of the net cage storage portion 612 and an ascending portion 614b which is an ascending flow path that rises diagonally upward toward the downstream side so as to form a drain trap. A top portion 614c, which is a folded portion connected to the rising portion 614b of the drain trap between the rising portion 614b and the descending portion 614d, and a descending flow path provided on the downstream side of the rising portion 614b and descending from the top portion 614c. It is provided with a lowering portion 614d. Therefore, the water sealing forming portion 614 forms a trap-shaped flow path that folds back from the rising portion 614b toward the descending portion 614d. The top 614c defines the sealed water level W0. The lowering portion 614d extends substantially downward in the vertical direction and is connected to the drainage flow path 8. The water sealing forming portion 614 forms a flow path of the drain trap as a flow path on the drainage flow path 8 side, and the inner diameter of the flow path is small, the shape of the flow path is complicated, and the depth of the flow path is high. By having any one of the elements such as deep or a combination of at least a part of these elements, it is difficult for the user to put his / her fingers in and clean it as compared with the net cage storage unit 12.

In the drainage device 1, the water level in the drainage main body 610 is further changed from the sealing water level W0 in the sealing water forming portion 614 to the sealing water level W0 in the sealing water forming portion 614 due to the water flowing into the draining main body 610. It is provided with a water level adjusting unit 626 which is a flow rate adjusting unit formed so as to easily rise to a high ultrasonic cleaning water level W2, and a dirt catching unit 628 formed at the bottom of the net cage storage unit 612.

In the water level adjusting unit 626, for example, when the water flowing into the drainage main body 610 is equal to or higher than a predetermined flow rate, the water level in the drainage main body 610 is changed to the sealing water forming unit 614 by the water flowing into the drainage main body 610. It is formed so as to easily rise from the sealing water level W0 of the above to the ultrasonic cleaning water level W2 higher than the sealing water level W0 in the sealing water forming portion 614. The water level adjusting unit 626 is arranged in the water sealing forming portion 614 that forms a single flow path from the inlet portion (connecting portion 614a) to the outlet portion (connecting portion with the drainage flow path 8) in the drainage main body portion 610. By adjusting the water level. In the water level adjusting unit 626, when the water level in the drainage body 610 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the amount of drainage to the downstream side, and the water level in the drainage body 610 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.

The water level adjusting portion 626 is formed at the top portion 614c, which is a sealing water level regulating portion that regulates the sealing water level of the sealing water forming portion 614. More specifically, the water level adjusting portion 626 is formed so as to project upward from the top portion 614c. The water level adjusting unit 626 includes a wall 630 that narrows the flow path in the water sealing forming unit 614. The wall 630 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 614. The wall 630 is formed so as to rise upward from the bottom surface of the top 614c of the flow path in the water sealing forming portion 614 when viewed from the front. In addition, for example, the wall 630 may be formed so that the wall itself of the water sealing forming portion 614 is narrowed inward, and the wall 630 is formed so as to rise upward from the top portion 614c.

The wall 630 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting portion 526, and the wall 630 is further formed with a notch 632 extending downward from its upper end 630c. The width A1 of the notch 632 in the left-right direction is substantially constant in the up-down direction. The lower part of the notch 632 is formed by the top 614c. The notch 632 extends from the front surface 630a to the rear surface 630b in the front-rear direction.

The water level in the drainage body 610 is the amount of water that cannot pass through the notch 632 with respect to the amount of water discharged from the water discharge section 606b (the amount of water flowing into the drainage body 10 per unit time) in the normal usage mode. When the water level exceeds the upper end 630c, a flow exceeding the upper end 630c of the wall 630 portion is formed. The wall 630 limits the amount of drainage per unit time through the notch 632 when the water level is above the top 630c, and the flow exceeds the top 630c when the water level is above the top 630c. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 632 (the region cut out by the notch 32) is the width A1 of the notch 632 and the height h1 of the water level (from the top 14c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 614 and the height h2 of the water level above the upper end 630c (the actual water level from the upper end 30c). Height). The second region B2 is a region above the upper end 30c of the wall 30.

When the water level exceeds the upper end 530c, the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10) must pass through the first region B1 of the notch 532. The rise in water level is suppressed because the drainage water forms a flow that exceeds the upper end 530c of the wall 530 portion.
When the water level exceeds the upper end 530c, the amount of drainage per unit time that passes through the first region B1 of the notch 532 by the water level adjusting unit 526 is compared with the amount of inflow per unit time that flows into the drainage main body 510. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The second drainage amount, which is the sum of the inflow amount per unit time flowing into the drainage main body 510, the drainage amount per unit time passing through the first region B1, and the drainage amount per unit time passing through the second region B2, is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

The ultrasonic cleaning water level W2 is set at a height of 630c or higher at the upper end of the wall 630 and lower than the ceiling portion 614e of the sealing water forming portion 614. As described above, the ultrasonic cleaning water level W2 is defined by the relationship between the first region B1 and the second region B2.

The water level adjusting unit 626 is formed so that the ultrasonic cleaning water level W2 is located in the net cage storage unit 612. More preferably, the water level adjusting portion 626 is formed so as to be located below the inlet portion 612a of the net cage storage portion 612. Further, the water level adjusting unit 626 is formed so that the ultrasonic cleaning water level W2 is located below the bottom of the net cage 18 in which the ultrasonic cleaning water level W2 is arranged in the net cage storage portion 612.
Further, the water level adjusting unit 626 is formed so that the ultrasonic cleaning water level W2 is at a position equal to or higher than the dirt capturing unit 628. Further, the water level adjusting portion 626 is formed so that the ultrasonic cleaning water level W2 is located on the inclined portion 634a described later. Further, as a modification, the water level adjusting unit 626 can be formed by means different from the wall 630, for example, an electric solenoid valve, a flow path adjusting valve, or the like. At this time, based on the control device 24 determining the start of water discharge, the control device 24 closes the solenoid valve and the like to raise the water level in the water sealing forming portion 614, and raises the water level to the ultrasonic cleaning water level W2. It may be controlled to raise to. Further, for example, when the water level rises to the ultrasonic cleaning water level W2, the control device 24 seals by opening and closing the solenoid valve and the like so that the water does not flow back to the washing place floor 604 and / or the bathtub 605 side. The rise in the water level in the water forming portion 614 may be suppressed.

Next, the dirt trapping unit 628 of the drainage device 601 according to the third embodiment of the present invention will be described.
The dirt trapping portion 628 is formed so that dirt easily adheres to the surface when the water level drops along the surface of the dirt trapping section 628. The dirt catching portion 628 includes an edge portion 634 that projects inward in a stepped manner from the side wall of the drainage main body portion 610.

The edge portion 634 is formed in an annular shape and includes an inclined portion 634a that is inclined downward toward the inside. The inclined portion 634a forms a flat surface that descends inward.

Next, the drainage device according to the fourth embodiment of the present invention will be described with reference to FIGS. 20 to 22. The fourth embodiment is an example in which the drainage device according to the present invention is applied to a bathtub in a bathroom.

Since the drainage device 701 according to the fourth embodiment has a portion having substantially the same structure as the drainage device 601 according to the third embodiment described above, the drainage device 601 and the first embodiment according to the third embodiment of the present invention are different from each other. Only the different points will be described, and the same reference numerals will be given to the drawings for similar parts, and the description thereof will be omitted. The operation (action) of the drainage device 701 according to the third embodiment of the present invention is the same as the operation (action) of the drainage device 1 according to the first embodiment, and thus the description thereof will be omitted.

The drainage device 701 is provided in the bathtub system 702. The drainage device 701 further includes a drainage body 710 connected to the downstream end of the bottom 705a of the bathtub 705.

The bathtub-side faucet device 709 is connected to a water supply channel 9 to which water is supplied from a water supply source (not shown) and a hot water supply channel 11 to which hot water is supplied on the upstream side. The bathtub side faucet device 709 includes a hot water mixing tap 6a which is a hot water mixing unit, mixes water from the water supply channel 9 and hot water from the hot water supply channel 11 in the hot water mixing tap 6a, and discharges water to the bathtub 705. Water is discharged from the water discharge unit 706b. The water supply channel 9 and the hot water supply channel 11 are connected to the hot water mixing tap 6a, and the water discharge side flow path 6c extends from the hot water mixing tap 6a, passes through the flow rate sensor 20 described later, and extends to the water discharge portion 706b. The water discharge unit 706b of the bathtub side faucet device 709 and the water discharge unit 607b of the shower faucet device 607 discharge water into the bathtub 705. The bathtub side faucet device 709 and the shower faucet device 607 supply water to the drainage main body 710 via the bathtub 705, respectively. The bathtub 705 is formed so as to discharge the water discharged from the bathtub side faucet device 709 and / or the shower faucet device 607 to the downstream side.

As shown in FIG. 21, the drainage main body 710 is provided on the downstream side of the bathtub 705 and is configured to form a sealing water.
The drainage main body 710 is provided on the downstream side of the bathtub 705 and is provided on the downstream side of the bathtub drainage port 712 which can be cleaned relatively easily and the bathtub drainage port 712 and forms a water seal. It is equipped with 614.
Hereinafter, in the description of the fourth embodiment of the present invention, the upstream side is the front side and the opposite side to the upstream side is the rear side with respect to the main water flow direction reaching the water level adjustment unit 626, and the water level adjustment unit 626 The direction of the main water flow to reach is described with the right side as the right side when viewed from the front and the left side as the left side when viewed from the front.

The bathtub drainage port 712 is formed in a size that accommodates a drainage plug 713 that opens and closes the bathtub drainage port 712 and a net cage 18 that is a hair catcher. The bathtub drainage port 712 also functions as a net cage storage portion for storing the net cage 18. The bathtub drainage port 712 is formed as a portion that is relatively easily accessible and maintainable by the user.
The bathtub drain port portion 712 has an inlet portion 712a opened on the bathtub 705 side, an intermediate portion 712b in which the drain plug 713 is housed inside, and a flow path diameter is reduced from the intermediate portion toward the water sealing forming portion 614. It is provided with an outlet portion 712c.

The entrance portion 712a of the bathtub drainage port portion 712 is opened in a circular shape to form the drainage port portion of the bathtub 705. The inlet portion 712a is formed by a part of the bottom portion 705a recessed below the bottom surface. The inlet portion 712a has a larger flow path diameter than the water sealing forming portion 614. The intermediate portion 712b is formed in a circular tubular shape. The intermediate portion 712b has a flow path diameter larger than that of the inlet of the water sealing forming portion 614. The outlet portion 712c of the bathtub drainage port portion 712 is formed at the lower end portion of the bathtub drainage port portion 712. The outlet portion 712c forms an inwardly flat portion. The outlet portion 712c is connected to the water sealing forming portion 614. The bathtub drainage port portion 712 has a flow path diameter larger than that of the water sealing forming portion 614, so that the user can easily see the inside and the user can easily insert his / her fingers to clean the inside. Here, the bathtub drainage port 712 is configured such that the net cage 18 is removed from the bathtub drainage port 712 by the user in order to dispose of the dust collected in the net cage 18. Further, the bathtub drainage port 712 is configured so that the net basket 18 after the user has thrown away the garbage is attached to the bathtub drainage port 712. That is, the bathtub drainage port 712 is configured so that the user can relatively easily insert his / her fingers to perform operations such as removing and attaching the net cage 18. As described above, since the bathtub drainage port 712 is configured so that the user's fingers can be easily inserted, the inside of the bathtub drainage port 712 is relatively easily cleaned by the user's fingers. The outlet portion 712c of the bathtub drainage port portion 712 may not be formed so that the flow path diameter is reduced, and the flow path diameter may be further reduced by another member on the downstream side.

The net basket 18 is arranged inside the intermediate portion 712b of the bathtub drainage port portion 712. The upper end of the net cage 18 is arranged inside the inlet portion 712a, and the upper end thereof is formed so as to substantially match the inlet portion 712a. Therefore, the net cage 18 is formed so as to cover the entire flow path on the lower side of the inlet portion 712a.

The water seal forming unit 614 has a function of draining the water discharged into the bathtub 705, storing a part of the inflowed water, and forming a normal water seal at the water seal water level W0 inside the water seal forming unit 614. Since the water seal forming portion 614 of the drainage device 701 is substantially the same as the water seal forming portion 614 of the drainage device 601 described above, the same reference numerals are given to the drawings and the description thereof will be omitted.

In the drainage device 1, the water level in the drainage main body 710 is further changed from the sealing water level W0 in the sealing water forming portion 614 to the sealing water level W0 in the sealing water forming portion 614 due to the water flowing into the draining main body 710. It is provided with a water level adjusting unit 626 which is a flow rate adjusting unit formed so as to easily rise to a high ultrasonic cleaning water level W2, and a dirt catching unit 728 formed at the bottom of the tub drain port portion 712. Since the water level adjusting unit 626 of the drainage device 701 is almost the same as the water level adjusting unit 626 of the drainage device 601 described above, the same reference numerals are given to the drawings and the description thereof will be omitted.

The water level adjusting portion 626 is formed so that the ultrasonic cleaning water level W2 is located in the bathtub drain port portion 712. Further, the water level adjusting portion 626 is formed so as to be located below the inlet portion 712a of the bathtub drainage port portion 712. Further, the water level adjusting unit 626 is formed so that the ultrasonic cleaning water level W2 is located below the bottom of the net cage 18 in which the ultrasonic cleaning water level W2 is arranged in the bathtub drain port portion 712. Further, the water level adjusting unit 626 is formed so that the ultrasonic cleaning water level W2 is at a position equal to or higher than the dirt capturing unit 728.

Next, the dirt trapping unit 728 of the drainage device 701 according to the third embodiment of the present invention will be described.
The dirt trapping portion 728 is formed so that dirt easily adheres to the surface when the water level drops along the surface of the dirt trapping section 728. The dirt catching portion 728 includes an edge portion 734 that projects inwardly in an arc shape from the side wall of the drainage main body portion 710.

The edge 734 is formed in an annular shape and extends inward. The edge portion 734 may include an inclined portion that inclines downward inward.

The drainage device 701 further oscillates ultrasonic waves in the flow sensor 20 which is a detection unit for detecting water discharged from the bathtub side faucet device 709 and / or the shower faucet device 707, and the water in the drainage main body 710. The ultrasonic oscillator 722 and the control device 24 for controlling the operation of the ultrasonic oscillator 722 are provided.

The ultrasonic oscillator 722 is provided below the bathtub drainage port 712 in the drainage body 710. The ultrasonic oscillator 722 is provided at the bottom of the drainage main body 710 and is arranged so as to oscillate radio waves upward.

Next, the drainage device according to the fifth embodiment of the present invention will be described with reference to FIG. The fifth embodiment is an example in which the drainage device according to the present invention is applied to the wash bowl of the wash faucet device. FIG. 24 is a perspective view of a washbasin faucet device provided with a drainage device according to a fifth embodiment of the present invention. FIG. 25 is a partially enlarged cross-sectional view of a portion near the floor surface of the wash bowl of the wash faucet device as viewed along the line XXIV-XXIV of FIG. In FIG. 25, for the purpose of explaining the internal structure, the internal structure of the flow path not shown in the cross section of the drainage main body is roughly illustrated by a virtual line.

Since the drainage device 801 according to the fifth embodiment has a similar basic structure to the drainage device 1 according to the first embodiment described above, only the differences from the first embodiment with respect to the fourth embodiment of the present invention will be described. , The same reference numerals are given to the drawings for similar parts, and the description thereof will be omitted. The operation (action) of the drainage device 801 according to the fourth embodiment of the present invention is the same as the operation (action) of the drainage device 1 according to the first embodiment, and thus the description thereof will be omitted.

The drainage device 801 includes a wash bowl 804, which is a water receiving part provided on the vanity 802, a wash faucet device (water discharge part) 806, which is a wash faucet that discharges water to the wash bowl 804, and a wash bowl 804. It is provided with a drainage main body portion 810 connected to the downstream end of the bottom portion 804a. The wash bowl 804 is not limited to a bowl for a vanity, but includes a hand wash bowl having a size capable of hand washing.

The washbasin faucet device 806 is connected to a water supply channel 9 to which water is supplied from a water supply source (not shown) and a hot water supply channel 11 to which hot water is supplied on the upstream side. The washbasin faucet device 806 is provided with a hot water mixing faucet 6a, mixes water from the water supply channel 9 with hot water from the hot water supply channel 11, and discharges water from the water discharge unit 806b. The water supply channel 9 and the hot water supply channel 11 are connected to the hot water mixing tap 6a, and the water discharge side flow path 6c extends from the hot water mixing tap 6a through the flow rate sensor 20 described later to the water discharge portion 806b. The wash bowl 804 is formed so as to discharge the water discharged from the wash faucet device 806 to the downstream side.

Next, with reference to FIG. 25, the drainage main body portion of the drainage device according to the fifth embodiment of the present invention will be described.
The drainage main body 810 is provided on the downstream side of the wash bowl 804 and is configured to form a sealing water. The drainage main body 810 is provided on the downstream side of the washbasin 804, and is provided on the downstream side of the net cage storage portion 812 in which the net cage is stored and the net cage storage portion 812, and also forms a sealing water. It includes a forming portion 814.
Hereinafter, in the description of the fifth embodiment of the present invention, the upstream side is the front side and the opposite side to the upstream side is the rear side with respect to the main water flow direction reaching the water level adjustment unit 626, and the water level adjustment unit 626 The direction of the main water flow to reach is described with the right side as the right side when viewed from the front and the left side as the left side when viewed from the front.

The net cage storage unit 812 is formed in a size that accommodates the net cage 818, which is a hair catcher. The net cage storage portion 812 includes an inlet portion 812a opened on the washbasin 804 side, an intermediate portion 812b in which the net cage 818 is stored, and an outlet whose flow path diameter is reduced from the intermediate portion toward the water sealing forming portion 814. It includes a part 812c. The inlet portion 812a and the intermediate portion 812b of the net cage storage portion 812 have a larger flow path diameter than the water sealing forming portion 814.

The inlet portion 812a of the net basket storage portion 812 is opened in a circular shape to form a drainage port portion of the washbasin 804. The inlet portion 812a is formed by a part of the bottom portion 804a recessed below the bottom surface. The inlet portion 812a has a larger flow path diameter than the water sealing forming portion 814. The intermediate portion 812b of the net cage storage portion 812 is formed in a circular tubular shape so that the net cage 818 can be arranged inside. The intermediate portion 812b has a larger flow path diameter than the water sealing forming portion 614. The outlet portion 812c of the net cage storage portion 812 is formed at the lower end portion of the net cage storage portion 812. The outlet portion 812c forms an inwardly flat portion. The outlet portion 812c is connected to the water sealing forming portion 814. Here, the net cage storage unit 812 is configured such that the net cage 818 is removed from the net cage storage portion 812 by the user in order to dispose of the dust collected in the net cage 818. Further, the net cage storage unit 812 is configured so that the net cage 818 after the waste is discarded by the user can be attached to the net cage storage portion 812. That is, the net cage storage unit 812 is configured so that the user can relatively easily insert his / her fingers to perform operations such as removing and attaching the net cage 818. As described above, since the net cage storage portion 812 is configured to easily insert the user's fingers, the inside of the net cage storage portion 812 is configured to be relatively easy to clean by the user's fingers. The outlet portion 812c of the net cage storage portion 812 may not be formed so that the flow path diameter is reduced, and the flow path diameter may be further reduced by another member on the downstream side.

The water seal forming unit 814 has a function of draining the water discharged into the wash bowl 804, storing a part of the inflowed water, and forming a normal water seal inside the water seal water level W0. ..

The water seal forming unit 814 forms a trap-shaped flow path that forms a water seal at the water seal water level W0. The water sealing forming portion 814 has a connecting portion 814a connected to the outlet portion 812c of the net cage storage portion 812 and an ascending portion 814b which is an ascending flow path that rises diagonally upward toward the downstream side so as to form a drain trap. The top portion 814c, which is a folded portion connected to the ascending portion 814b of the drain trap between the ascending portion 814b and the descending portion 814d, and a descending flow path provided on the downstream side of the ascending portion 814b and descending from the top portion 814c. It is provided with a lowering portion 814d. Therefore, the water sealing forming portion 814 forms a trap-shaped flow path that folds back from the rising portion 814b toward the descending portion 814d. The top 814c defines the sealed water level W0. The lowering portion 814d extends substantially downward in the vertical direction and is connected to the drainage flow path 8. The water sealing forming portion 814 forms a flow path of the drain trap as a flow path on the drainage flow path 8 side, the inner diameter of the flow path is small, the shape of the flow path is complicated, and the depth of the flow path is By having any one of the elements such as deep or a combination of at least a part of these elements, it is difficult for the user to put his / her fingers in and clean it as compared with the net cage storage unit 812.

In the drainage device 801, the water level in the drainage main body 810 is further changed from the sealing water level W0 in the sealing water forming portion 814 to the sealing water level W0 in the sealing water forming portion 814 due to the water flowing into the draining main body 810. It is provided with a water level adjusting unit 826 which is a flow rate adjusting unit formed so as to easily rise to a high ultrasonic cleaning water level W2, and a dirt catching unit 828 formed at the bottom of the net cage storage unit 812.

In the water level adjusting unit 826, for example, when the water flowing into the drainage main body 810 is equal to or higher than a predetermined flow rate, the water level in the drainage main body 810 is changed to the water sealing forming unit 814 by the water flowing into the drainage main body 810. It is formed so as to easily rise from the sealing water level W0 of the above to the ultrasonic cleaning water level W2 higher than the sealing water level W0 in the sealing water forming portion 814. The water level adjusting unit 826 is arranged in the water sealing forming portion 814 that forms a single flow path from the inlet portion (connecting portion 814a) to the outlet portion (connecting portion with the drainage flow path 8) in the drainage main body portion 810. Adjust the water level by doing so. In the water level adjusting unit 826, when the water level in the drainage main body 810 is between the sealed water level W0 and the ultrasonic cleaning water level W2, the amount of drainage to the downstream side is the water level in the drainage main body 810 is the ultrasonic cleaning water level. It is formed so as to be less than the amount of drainage to the downstream side when reaching W2.

The water level adjusting unit 826 is formed at the top portion 814c, which is a sealing water level regulating portion that regulates the sealing water level of the drain trap of the sealing water forming portion 814. More specifically, the water level adjusting portion 826 is formed so as to project upward from the top portion 814c. The water level adjusting unit 826 includes a wall 830 that narrows the flow path in the water sealing forming unit 814. The wall 830 forms a squeezing portion that narrows the lower side of the flow path in the water sealing forming portion 814. The wall 830 is formed so as to rise upward from the bottom surface of the top portion 814c of the flow path in the water sealing forming portion 814 when viewed from the front. The wall 830 is formed so as to rise obliquely backward and upward from the bottom surface of the top portion 814c of the flow path in the water sealing forming portion 814. In addition, for example, the wall 830 may be formed so that the wall itself of the water sealing forming portion 14 is narrowed inward and is formed so as to rise upward from the top portion 814c.

The wall 830 extends in the left-right direction with respect to the main water flow direction reaching the water level adjusting portion 826, and the wall 830 is further formed with a notch 832 extending downward from its upper end 830c. The notch 832 is formed in a concave shape downward from the center of the upper end 830c. The width A1 of the notch 832 in the left-right direction is substantially constant in the up-down direction. The lower part of the notch 832 is formed by the top 814c. The notch 832 extends from the front surface 830a to the rear surface 830b in the front-rear direction.

The water level in the drainage body 810 is the amount of water that cannot pass through the notch 832 with respect to the amount of water discharged from the water discharge part 6b in the normal usage mode (the amount of water flowing into the drainage body 10 per unit time). When the water level exceeds the upper end 830c, a flow exceeding the upper end 830c is formed. The wall 830 limits the amount of drainage per unit time through the notch 832 when the water level is above the top 830c, and the flow exceeds the top 830c when the water level is above the top 830c. A special weir is formed. The amount of drainage (drainage flow rate) per unit time passing through the first region B1 of the notch 832 (the region cut out by the notch 832) is the width A1 of the notch 832 and the height h1 of the water level (from the top 814c). It is determined by the actual height of the water level). The amount of drainage (drainage flow rate) per unit time passing through the second region B2 is the width A2 of the flow path of the sealing water forming portion 814 and the height h2 of the water level above the upper end 830c (the actual water level from the upper end 830c). Height). The second region B2 is a region above the upper end 830c of the wall 830.

When the water level exceeds the upper end 830c, the amount of water discharged from the water discharge unit 6b (the amount of inflow per unit time flowing into the drainage main body 10) must pass through the first region B1 of the notch 832. No water forms a flow beyond the upper end 830c of the wall 830 portion, so that the rise in water level is suppressed.
When the water level exceeds the upper end 830c, the amount of drainage per unit time that passes through the first region B1 of the notch 832 by the water level adjusting unit 826 is compared with the amount of inflow per unit time that flows into the drainage body 810. The second drainage amount, which is the total of the drainage amount per unit time passing through the second region B2, is discharged. The second drainage amount, which is the sum of the inflow amount per unit time flowing into the drainage main body 810, the drainage amount per unit time passing through the first region B1, and the drainage amount per unit time passing through the second region B2, is the same. When becomes, the water level rise is almost stopped, and the water level becomes the ultrasonic cleaning water level W2.

The ultrasonic cleaning water level W2 is set at a height equal to or higher than the upper end 830c of the wall 830 and lower than the ceiling portion 814e of the sealing water forming portion 814. As described above, the ultrasonic cleaning water level W2 is defined by the relationship between the first region B1 and the second region B2.

The water level adjusting unit 826 is formed so that the ultrasonic cleaning water level W2 is located in the net cage storage unit 812. More preferably, the water level adjusting portion 826 may be formed so as to be located below the inlet portion 812a of the net cage storage portion 812. Further, the water level adjusting unit 826 is formed so that the ultrasonic cleaning water level W2 is located below the bottom of the net cage 818 in which the ultrasonic cleaning water level W2 is arranged in the net cage storage portion 812.
Further, the water level adjusting unit 826 may be formed so that the ultrasonic cleaning water level W2 is at a position equal to or higher than the dirt capturing unit 828. Further, the water level adjusting portion 826 may be formed so that the ultrasonic cleaning water level W2 is located on the inclined portion 834a described later. Further, as a modification, the water level adjusting unit 826 can be formed by means different from the wall 830, for example, an electric solenoid valve, a flow path adjusting valve, or the like. At this time, based on the control device 24 determining the start of water discharge, the control device 24 closes the solenoid valve and the like to raise the water level in the water sealing forming portion 814, and raises the water level to the ultrasonic cleaning water level W2. It may be controlled to raise to. Further, for example, the control device 24 controls the inside of the water seal forming unit 814 by opening and closing the solenoid valve and the like so that the water does not flow back to the wash bowl 804 side when the water level rises to the ultrasonic cleaning water level W2. The rise in water level may be suppressed.

Next, the dirt trapping unit 828 of the drainage device 801 according to the fifth embodiment of the present invention will be described.
The dirt trapping portion 828 is formed so that dirt easily adheres to the surface when the water level drops along the surface of the dirt trapping section 828. The dirt catching portion 828 includes an edge portion 834 that projects inward in a stepped manner from the side wall of the drainage main body portion 810.

The edge portion 834 is formed in an annular shape and includes an inclined portion 834a that is inclined downward toward the inside. The inclined portion 834a forms a flat surface that descends inward.

1 Drainage device 4 Sink 4a Bottom 4b Bottom surface 10 Drain body 12 Net cage storage 14 Sealed water forming 18 Net cage 22 Ultrasonic oscillator 26 Water level adjustment 30 Wall 30c Top 32 Notch 34 Edge 34a Inclined 36 Inside capture Part 126 Water level adjustment part 130 Wall 132 Notch 226 Water level adjustment part 230 Wall 232 Notch 326 Water level adjustment part 330 Wall 332 Notch 426 Water level adjustment part 430 Wall 432 Notch 501 Drainage device 510 Drainage body 512 Net cage storage 514 Water seal forming part 526 Water level adjustment part 530 Wall 530c Top 532 Notch 601 Drainage device 602 Bathroom 604 Washing area Floor 604a Bottom 605 Bath 610 Drainage body part 612 Net cage storage part 614 Water level adjustment part 626 Water level adjustment part 630 Wall 630c Top 632 Notch 634 Edge 634a Inclined 701 Drainage device 705 Drainage 705a Bottom 710 Drainage body 712 Bathtub drainage port 722 Ultrasonic oscillator 728 Capture 734 Edge 801 Drainage device 804 Washbasin 804a Bottom 810 Drainage body 812 Net cage storage Part 814 Sealed water forming part 818 Net cage 826 Water level adjusting part 828 Capturing part 830 Wall 830c Upper end 832 Notch 834 Edge part 834a Inclined part A1 Width A2 Width B1 First area B2 Second area W0 Sealed water level W2 Ultrasonic cleaning water level

Claims (6)

A drainage device installed at the bottom of the water receiving part that receives water.
A main body portion provided on the downstream side of the water receiving portion and provided with a water sealing forming portion for forming a trap-shaped flow path for forming a sealing water, and the main body portion.
An ultrasonic oscillator that oscillates ultrasonic waves in the water inside the main body,
The water flowing into the main body is formed so that the water level in the main body can easily rise from the sealing water level in the sealing water forming portion to the ultrasonic cleaning water level higher than the sealing water level in the sealing water forming portion. The flow rate adjusting unit is such that the amount of drainage per unit time to the downstream side from the sealing water level to the ultrasonic cleaning water level in the main body is determined by the main body. A drainage device including the flow rate adjusting section, which is formed so that the water level in the section is smaller than the amount of drainage to the downstream side per unit time when the water level reaches the ultrasonic cleaning water level. The drainage device according to claim 1, wherein the flow rate adjusting unit includes a wall that narrows the flow path in the water sealing forming unit. The wall of the flow rate adjusting portion is formed so as to rise upward from the sealing water level regulating portion that regulates the sealing water level, and extends in the left-right direction with respect to the main water flow direction, and further on the wall. The drainage device according to claim 1, wherein a notch extending downward from the upper end thereof is formed. The drainage device according to claim 3, wherein the width of the notch formed in the wall of the flow rate adjusting unit in the left-right direction is substantially constant in the up-down direction. The drainage device according to claim 3, wherein the width of the notch formed in the wall of the flow rate adjusting unit in the left-right direction becomes wider as it goes downward in the vertical direction. Further, the net cage provided in the main body and having a mesh is provided.
The first to fifth aspects of the present invention, wherein the flow rate adjusting unit is formed so as to be located below the bottom of the net cage in which the ultrasonic cleaning water level is arranged in the main body. Drainage device.

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