JP7212306B2 - drainage system - Google Patents

Description

The present invention relates to a drainage system, and more particularly to a drainage system for draining water.

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

Also known is a drainage system provided on the bottom surface of a sink and provided with an ultrasonic transmitter, as shown in Patent Document 2. US Pat. In this drainage system, when the user performs ultrasonic cleaning, the user presses the operation button of the operation unit to close the drainage hole of the drainage system. When water is flushed into the sink with the drain hole closed, the water collects in the drain container of the drain system. Ultrasonic cleaning is performed in a state where water is stored in the drain container, and dirt inside the drain is cleaned.

Japanese Patent Application Laid-Open No. 2004-324108 JP 2007-285097 A

However, in conventional drainage systems as shown in Patent Documents 1 and 2, first, water is stored up to the upper part of the drainage part, and ultrasonic cleaning is performed in a state where water is stored up to the upper end of the drainage part. rice field. When ultrasonic cleaning is performed in a state in which water is stored up to the upper part of the drainage part in this way, the antinode and node of the overlapping ultrasonic waves in the drainage part are almost fixed while being generated at a specific position, and the ultrasonic cleaning is performed. There is a problem that the cleaning power is uneven depending on the position, causing so-called uneven cleaning.

Accordingly, the present invention has been made to solve the above-described problems of the prior art, and it is an object of the present invention to suppress the occurrence of so-called uneven cleaning, in which the cleaning power of ultrasonic cleaning is uneven depending on the position. there is

In order to solve the above-described problems, the present invention provides a drainage system for draining water, which is connected to a downstream end of a water receiving part, discharges water discharged to the water receiving part, and discharges water discharged from the water receiving part. The water level of the sealing water is set to be higher than the first water level during washing by means of the drainage main body part that retains part of the water and forms the water seal at the normal time at the first water level, and the water that is supplied to the drainage main body part. Water level raising means for raising to a second water level set as the water level of the sealing water, an ultrasonic oscillator for oscillating ultrasonic waves to the sealing water, a control device for controlling oscillation of the ultrasonic oscillator, and the drainage body a supply start signal transmission unit that transmits a supply start signal corresponding to the start of water supply to the control device, and the control device receives the supply start signal from the supply start signal transmission unit. Thereafter, before the water level in the drainage main body rises to the second water level, the ultrasonic oscillator is started to oscillate.
In the present invention configured as described above, after receiving the supply start signal from the supply start signal transmitting section, the control device generates an oscillation by the ultrasonic oscillator before the water level of the seal water rises to the second water level. to start. As a result, the water level of the sealing water can be varied while the ultrasonic oscillator oscillates the ultrasonic waves, and the positions of the antinodes and nodes of the overlapping ultrasonic waves in the sealing water can be changed. Therefore, according to the present invention, it is possible to suppress the occurrence of so-called uneven cleaning, in which the cleaning power of ultrasonic cleaning is uneven depending on the position.

In the present invention, preferably, the control device causes the ultrasonic oscillator to start oscillating while the seal water level is rising.
In the present invention configured as described above, the control device causes the ultrasonic oscillator to start oscillating while the water level of the seal water is rising. As a result, it is possible to suppress the operation of the ultrasonic oscillator when the supply of water to the drainage main unit ends before the water level of the seal water rises. Therefore, the water level of the sealing water does not rise, and only the relatively low portion of the drainage body is subjected to ultrasonic cleaning. It is possible to suppress the decrease.

In the present invention, preferably, a portion where the water receiving portion and the drainage main body are connected further includes an enlarged diameter portion in which a flow path diameter increases from the drainage main body to the water receiving portion, and the control device causes the ultrasonic oscillator to start oscillating when the water level of the seal water is equal to or higher than the third water level at which the enlarged diameter portion is formed.
In the case where the portion where the water receiving portion and the drainage body are connected has an enlarged diameter portion in which the flow path diameter expands from the drainage body to the water receiving portion, the present inventors have found that when the portion is to be cleaned by ultrasonic waves, However, since the range of propagation of ultrasonic waves is widened at the enlarged diameter portion, the ultrasonic waves are diffused and the cleaning function is deteriorated.
In the present invention configured as described above, the control device raises the water level of the sealing water and causes the ultrasonic oscillator to start oscillating when the water level reaches or exceeds the third water level at which the enlarged diameter portion is formed. Since the ultrasonic cleaning is performed after the water level reaches the enlarged diameter portion where it is difficult to clean dirt from the sealing water forming portion, the ultrasonic cleaning performance can be improved in the portion where the cleaning performance is lowered, and the third water level. By omitting oscillation by the ultrasonic oscillator at a lower water level, deterioration in durability of the ultrasonic oscillator can be suppressed.

In the present invention, preferably, the control device stops oscillation by the ultrasonic oscillator after the water level of the seal water has decreased to the first water level.
In the present invention configured as described above, the control device stops the oscillation by the ultrasonic oscillator after the seal water level drops to the first water level. As a result, the ultrasonic wave can be oscillated by the ultrasonic oscillator while the water level of the sealing water is fluctuated until the water level lowering is finished. Therefore, according to the present invention, it is possible to more reliably suppress the occurrence of so-called uneven cleaning.

In the present invention, preferably, the control device causes the ultrasonic oscillator to continue oscillation during a period in which the water level of the sealing water is at the second water level.
In the present invention configured as described above, the control device causes the ultrasonic oscillator to continue to oscillate while the sealing water level is at the second water level. As a result, the control device continues to perform ultrasonic cleaning during the period when the water level in the drainage body reaches the second water level, and further enhances the ultrasonic cleaning ability in the area where the water level of the sealing water has risen to the second water level. can be improved.

According to the drainage system of the present invention, it is possible to suppress the occurrence of so-called uneven cleaning, in which the cleaning power of ultrasonic cleaning is uneven depending on the position.

BRIEF DESCRIPTION OF THE DRAWINGS It is the front view which looked at the drainage system by 1st Embodiment of this invention from the front. BRIEF DESCRIPTION OF THE DRAWINGS It is the side view which looked at the drainage system by 1st Embodiment of this invention from the side. 2 is an enlarged cross-sectional view taken along line III-III of FIG. 1; FIG. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3; 4 is a cross-sectional view taken along line VV of FIG. 3; FIG. 1 is a block diagram schematically showing the structure of a drainage system according to a first embodiment of the present invention; FIG. FIG. 4 is a partially enlarged cross-sectional view showing a state in which water containing dirt has flowed into the drainage system in the standby state according to the first embodiment of the present invention; FIG. 4 is a partially enlarged cross-sectional view showing a state in which water starts to flow into the drainage body of the drainage system according to the first embodiment of the present invention; Water further flows into the drainage main body of the drainage system according to the first embodiment of the present invention, and the inflowing water flows out to the outlet channel through the second drainage channel, and the rising part of the first drainage channel. is a partially enlarged cross-sectional view showing a state in which the water level of is raised. FIG. 5 is a partially enlarged cross-sectional view showing a state in which water further flows into the drainage body of the drainage system according to the first embodiment of the present invention and the water level in the first drainage channel reaches the maximum water level. The inflow of water into the drainage body of the drainage system according to the first embodiment of the present invention is stopped, and the water above the inlet of the second drainage channel flows out to the outlet channel through the second drainage channel, FIG. 4 is a partially enlarged cross-sectional view showing a state in which the water level in the first drainage channel is gradually lowered; FIG. 4 is a partially enlarged cross-sectional view showing a state in which the drainage system according to the first embodiment of the present invention returns to a standby state after a series of cleaning operations are finished; 4 is a flow chart showing the control contents of the control device in the drainage system according to the first embodiment of the present invention; 4 is a timing chart showing the detection state of spouting water by the flow rate sensor, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the drainage system according to the first embodiment of the present invention. It is a flowchart which shows the control content of the control apparatus in the 1st modification of the drainage system by 1st Embodiment of this invention. FIG. 10 is a timing chart showing the detection state of spouting water by the flow rate sensor, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the first modification of the drainage system according to the first embodiment of the present invention; FIG. It is a flow chart which shows the control contents of the control device in the 2nd modification of the drainage system by a 1st embodiment of the present invention. 9 is a timing chart showing the detection state of spouting water by the flow rate sensor, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the second modification of the drainage system according to the first embodiment of the present invention. It is the front view which looked at the structure of the 3rd modification of the drainage system by 1st Embodiment of this invention from the front. It is a flow chart which shows the control contents of the control device in the 3rd modification of the drainage system by a 1st embodiment of the present invention. 9 is a timing chart showing the state of the operation switch, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the third modification of the drainage system according to the first embodiment of the present invention; Fig. 2 is a perspective view of a bathroom with a drainage system according to a second embodiment of the invention; 23 is a partially enlarged cross-sectional view of the vicinity of the floor surface of the bathroom as viewed along line XXIII-XXIII of FIG. 22; FIG. Fig. 3 is a perspective view of a bathroom with a drainage system according to a third embodiment of the invention; 25 is a partially enlarged cross-sectional view of the vicinity of the floor surface of the bathroom as viewed along line XXV-XXV of FIG. 24; FIG. FIG. 11 is a perspective view of a washbasin faucet device provided with a drainage system according to a fourth embodiment of the present invention; FIG. 27 is a partially enlarged cross-sectional view of the vicinity of the floor surface of the washbowl of the washbasin faucet device as viewed along line XXVII-XXVII in FIG. 26; FIG. 11 is an enlarged cross-sectional view showing a state in which the valve body is in an open state in the drainage body in the fourth modified example of the drainage system according to the first embodiment of the present invention; FIG. 11 is an enlarged cross-sectional view showing a state in which the valve body is in a flow passage cross-sectional area reduction state in the drainage main body in the fourth modified example of the drainage system according to the first embodiment of the present invention; FIG. 11 is an enlarged cross-sectional view showing a state in which the top of the drainage channel is in a low position in the drainage body in the fifth modification of the drainage system according to the first embodiment of the present invention; FIG. 11 is an enlarged cross-sectional view showing a state in which the top of the drainage channel is in a high position in the drainage body in the fifth modification of the drainage system according to the first embodiment of the present invention;

Hereinafter, embodiments of the present invention disclosed in this specification will be described in detail with reference to the drawings. Many modifications and other embodiments of the invention will be apparent to those skilled in the art from the following description. Accordingly, the following description is to be construed as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. Substantial details of construction and/or function may be changed without departing from the spirit of the invention.

A drainage system according to a first embodiment of the present invention will now be described with reference to the accompanying drawings.
FIG. 1 is a front view of the drainage system according to the first embodiment of the present invention, and FIG. 2 is a side view of the drainage system according to the first embodiment of the present invention.
As shown in FIGS. 1 and 2, a drainage system 1 according to a first embodiment of the present invention is a system installed in a kitchen for ultrasonic cleaning. The drainage system 1 is a system with an ultrasonic cleaning function. The drainage system 1 may be a system other than the kitchen system.

The drainage system 1 includes a sink 4 which is a water receiving portion provided in the kitchen 2, a kitchen faucet device (water discharge portion) 6 which is a kitchen faucet for discharging water (hot water) to the sink 4, and the sink 4. It has a drainage body 8 connected to the downstream end of the bottom 4a.
Drain Main Body The sink 4 is formed to discharge water discharged from the kitchen faucet device 6 to the downstream side.
The kitchen faucet device 6 is connected on the upstream side 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. The kitchen faucet device 6 has a hot and cold water mixing faucet 6a, mixes water from the water supply channel 9 and hot water from the hot water supply channel 11, and discharges the water from the water discharge part 6b. The water supply channel 9 and the hot water supply channel 11 once extend upward and are connected to the hot and cold water mixing valve 6a. It rises again and extends to 6b.

Next, referring to FIG. 3, the drainage body of the drainage system according to the first embodiment of the present invention will be described.
3 is a cross-sectional view along line III-III of FIG. 1, FIG. 4 is a cross-sectional view along line IV-IV of FIG. 3, and FIG. 5 is line VV of FIG. 1 is a cross-sectional view taken along .
The drain main body 8 includes an inlet 10 that opens toward the sink 4, a first drain channel 12 that is a trap-shaped channel provided downstream of the inlet 10, and branches off from the first drain channel 12. and an intrusion suppressing portion 16 that suppresses the entry of dirt of a certain size into the second drainage channel 14 . The drain main body 8 drains the water discharged to the sink 4, stores a part of the discharged water, and functions as a sealing water forming part for forming a normal water seal at the sealing water level W2 therein. Function. The inlet portion 10 is formed by partially recessing the bottom portion 4a downward. An inlet portion 10 of the drain main body portion 8 is formed by a concave shape of the bottom portion 4a of the sink 4 at the drain port portion. A water supply channel other than the channel from the sink 4 may be connected to the drain main body 8 as will be described later. Another water supply channel may be connected to another water supply (not shown). That is, the water supplied into the drainage body 8 includes water flowing into the drainage body 8 from a water supply channel other than the channel from the sink 4 . The water flowing into the drainage body 8 also includes water containing detergent, shampoo, body soap, stains on tableware, stains on sinks, etc., such as domestic wastewater.
In this specification, the term "sealed water" refers to a portion filled with water by a trap, which is provided in a drainage body or a water receiving portion for blocking off odors and the like. In addition, "normal water sealing" refers to water sealing during the period of non-use (standby state) where water is not discharged from the water discharge part such as a kitchen faucet, and "water sealing during washing". The term refers to water sealing when cleaning the drain body and the water receiver using ultrasonic waves.

The drain main body 8 forms an enlarged diameter portion 8a whose diameter is enlarged upward at the height of the third water level W3 (see FIG. 8). The enlarged diameter portion 8a forms a wall surface in a portion wider in the outer peripheral direction than the lower portion of the drainage main body portion 8. As shown in FIG. The enlarged-diameter portion 8a is formed so that the diameter of the flow passage increases from the drain body portion 8 to the sink 4 at the portion where the sink 4 and the drain body portion 8 are connected. Ultrasonic waves traveling straight from an ultrasonic oscillator 22, which will be described later, diffract and wrap around to the enlarged diameter portion 8a, so that the performance of ultrasonic cleaning tends to decrease in the enlarged diameter portion 8a. Therefore, the enlarged diameter portion 8a forms a portion that makes it difficult to clean the drain main body portion 8 of dirt.

The intrusion suppressing portion 16 is formed at an inlet portion 14a of the second drainage channel 14, which will be described later. The intrusion suppressing portion 16 has a plurality of through holes 32 formed in a plate-like body. The intrusion suppression unit 16 can suppress the intrusion of dirt of a certain size and shape (for example, dirt in the form of a small object) and limit the size of the dirt that passes through.

Again, referring to FIGS. 3 and 6, the drainage system according to the first embodiment of the invention will be described.
FIG. 6 is a block diagram schematically showing the structure of the drainage system according to the first embodiment of the invention.
The drainage system 1 further includes a lid 18 arranged to cover the upper part of the inlet section 10, a flow rate sensor 20 as a detection section for detecting water spouted from the kitchen faucet device 6, and a drainage body section 8. An ultrasonic oscillator 22 that oscillates ultrasonic waves in water, a control device 24 that controls the operation of the ultrasonic oscillator 22, and an outlet channel 26 provided downstream of the first drainage channel 12 of the drainage body 8 , and a mesh basket 28 provided on the flow path in the drainage main body 8 and having a mesh. The inlet portion 10 and the drain body portion 8 form the outlet portion of the sink 4 .

The lid 18 is formed with a hole (not shown) into which small objects such as water and dust flow.
The flow rate sensor 20 is provided between the hot and cold water mixer tap 6a and the water discharger 6b of the kitchen faucet device 6. As shown in FIG. The flow rate sensor 20 can detect the flow rate per unit time of water spouted from the water spouting portion 6b of the kitchen faucet device 6 . Further, the flow rate sensor 20 can detect that water is spouted from the water spouting portion 6b by detecting the flow rate per unit time. Flow sensor 20 is electrically connected to control device 24 . The flow rate sensor 20 transmits to the control device 24 a detection signal, which is a supply start signal corresponding to the start of detection of the water flow rate, which is the start of water supply to the drainage body 8 . Therefore, the flow rate sensor 20 functions as a supply start signal transmission section that transmits a supply start signal corresponding to the start of water supply to the drainage body 8 to the control device 24 . The supply start signal of the flow rate sensor 20 is in an ON state while water is being supplied to the drainage body 8 .

The ultrasonic oscillator 22 is provided below the inlet portion 10 inside the drainage body portion 8 . The ultrasonic oscillator 22 is provided at the bottom of the drainage main body 8 and arranged so as to oscillate radio waves upward. The ultrasonic oscillator 22 maintains a constant oscillation frequency during oscillation. The ultrasonic oscillator 22 is electrically connected with the controller 24 .

The control device 24 incorporates a CPU, memory, etc., has a function of receiving a detection signal transmitted from the flow rate sensor 20, and controls the operation of the ultrasonic oscillator 22 based on a predetermined control program or the like stored in the memory. do. The control device 24 controls the oscillation of ultrasonic waves by the ultrasonic oscillator 22 and the stoppage of the oscillation. The control device 24 has an ultrasonic cleaning mode in which the ultrasonic oscillator 22 starts oscillating in conjunction with the detection of spouted water by the flow rate sensor 20 . The start of water discharge and the start of ultrasonic cleaning can be interlocked.

The mesh basket 28 is arranged in the upstream portion of the drainage body 8 . The mesh basket 28 is arranged above the drainage body 8 . The mesh basket 28 is formed so as to cover the entire flow path on the lower side of the inlet section 10 . The mesh basket 28 is placed inside a recess that is recessed downward in the bottom portion 4a. The upper end of the mesh basket 28 is arranged at the inlet section 10 . The mesh basket 28 allows water to pass therethrough, but keeps small objects such as garbage inside the mesh basket 28 without allowing them to pass therethrough. The mesh basket 28 can be changed to any shape of dust trapping member having a function of trapping dust and the like.

The outlet channel 26 is connected to the downstream end of the first drainage channel 12 and extends downward in the vertical direction. The outlet channel 26 is further connected to a downstream drain pipe (not shown). A portion of the outlet channel 26 may be formed by the drainage body portion 8 .

Next, the first drainage channel 12 and the second drainage channel 14 of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 5. FIG.
The first drainage channel 12 of the drainage main body 8 of the drainage system 1 includes a connection portion 12a connected to the lower side of the inlet portion 10 and an upward flow that rises obliquely upward toward the downstream side so as to form a drainage trap. a first drainage channel ascending portion 12b that is a channel, and a top portion 12c that is a folded portion connecting to the first drainage channel ascending portion 12b of the drain trap between the first drainage channel ascending portion 12b and the descending portion 12d; , and a descending portion 12d which is a descending channel provided downstream of the first drain channel ascending portion 12b and descending from the top portion 12c. The descending portion 12 d is connected to the outlet channel 26 .

The first drainage channel 12 is a trap-shaped channel that folds back from the first drainage channel ascending portion 12b toward the descending portion 12d. The descending portion 12d is connected to the downstream end of the first drainage channel ascending portion 12b and extends substantially vertically downward. Sealing water is formed in the connecting portion 12a, the first drainage channel rising portion 12b, and the second drainage channel 14 inside the drainage main body 8, as will be described later, and the sealing water level W2 (see FIG. 7), which is the first water level, is formed. ) is defined. The first drainage channel 12 is configured to define a maximum water level W1 (see FIG. 10) equal to or lower than the height of the inlet 10 by the top portion 12c of the trap-shaped channel. The maximum water level W1 is the second water level set as the water level of sealing water during washing. The maximum water level W1 is defined at a position higher than the bottom surface of the mesh basket 28, for example, at the top of the mesh basket 28. The maximum water level W1 is set to a water level at which at least part of the mesh basket 28 is in contact with water. A maximum water level W1 may be defined above the mesh basket 28 . Since the top portion 12c of the first drainage channel 12 is provided at the height of the inlet portion 10 of the drainage body portion 8, the maximum water level W1 defined by the first drainage channel 12 is 10 height. The first drainage channel 12 is formed to have a first channel cross-sectional area D1 such that a first drainage volume per unit time larger than a second drainage volume per unit time, which will be described later, can be discharged to the outlet channel 26. . The first channel cross-sectional area D<b>1 is the smallest channel cross-sectional area among the channel cross-sectional areas of the first drainage channel 12 .

The second drainage channel 14 is a bypass extending from an inlet portion 14a of the second drainage channel 14 provided upstream from the top portion 12c of the first drainage channel 12 to an outlet portion 14b provided downstream from the top portion 12c. Form a flow path. The second drainage channel 14 forms a second drainage channel rising portion 14h that rises obliquely upward from the inlet portion 14a toward the downstream side, and the highest portion between the inlet portion 14a and the outlet portion 14b, and It has a top portion 14c that forms a folded portion and a second drainage channel descending portion 14i that descends from the top portion 14c.

The inlet portion 14a of the second drainage channel 14 is connected to the lower surface of the first drainage channel ascending portion 12b of the first drainage channel 12 . The outlet portion 14b is connected to the side wall of the outlet channel 26. As shown in FIG.

The second drainage channel 14 forms a top portion 14c that forms the highest portion between the inlet portion 14a and the outlet portion 14b and forms a folded portion. The top portion 14c of the second drainage channel 14 defines the sealing water level W2 (see FIG. 7) in the drainage body portion 8. As shown in FIG. In addition, the second drainage channel 14 may be configured such that the sealing water level W2 is defined by, for example, the middle portion of the second drainage channel 14 or the outlet thereof constituting the highest portion of the channel. Also, the sealing water level W2 may be defined by a configuration other than the second drainage channel 14 . The sealing water level W2 is defined below the mesh basket 28 . The seal water level W2 is positioned near the center or lower part of the first drainage channel ascending portion 12b, and is positioned near the center or lower part of the drainage body portion 8. As shown in FIG.

The second drainage channel 14 further includes a narrowed portion 30 that narrows a part of the channel. The height of the channel from the inlet portion 14a of the second drainage channel 14 to just before the throttle portion 30 is a substantially constant height H1. The channel height of the narrowed portion 30 of the second drainage channel 14 is a height H2 that is lower than the height H1.

As shown in FIG. 4, the channel cross section of the inlet portion 14a of the second drainage channel 14 is formed in a flat shape. The channel cross section of the inlet portion 14a has a rectangular shape. The second drainage channel 14 is formed such that the width of the channel from the inlet portion 14a to the narrowed portion 30 gradually decreases.
The second drainage channel 14 is formed in the narrowed portion 30 to have a second channel cross-sectional area D2 such that the second drainage amount can be discharged to the outlet channel 26 per unit time. The second channel cross-sectional area D2 is the smallest channel cross-sectional area among the channel cross-sectional areas of the second drainage channel 14 . The second cross-sectional area D2 of the second drainage channel 14 is smaller than the first cross-sectional area D1 of the first drainage channel 12 . Therefore, the second drainage channel 14 is formed to have a greater channel resistance than the first drainage channel 12 due to the constricted portion 30 . The second drainage channel 14 is configured to prevent water from flowing into the drainage body 8 at an inflow amount per unit time that exceeds the second drainage volume per unit time of the narrowed portion 30 of the second drainage channel 14. It functions to raise the water level in the portion 8 to at least the maximum water level W1 that is higher than the sealing water level W2 and is defined by the first drainage channel 12 .

The channel cross-sectional area of each through-hole 32 among the plurality of through-holes 32 of the intrusion suppressing portion 16 is smaller than the second channel cross-sectional area D2 of the throttle portion 30 of the second drainage channel 14 .

The first drainage channel 12 and the second drainage channel 14 drain water flowing into the drainage body 8 to the outlet channel 26 so that the water level in the drainage body 8 does not exceed the maximum water level W1. act as a means. At least the first drain channel 12 functions to drain the water in the first drain channel 12 to the outlet channel 26 so that the water level in the drain body 8 does not exceed the maximum water level W1. When the water level in the drainage body 8 reaches the maximum water level W1, the drainage means is the unit of water that flows out from the drainage body 8 to the outlet channel 26 by the first drainage channel 12 and the second drainage channel 14. It is formed so that the amount of drainage per hour is equal to or greater than the amount of water that flows into the drainage body 8 per unit time. The drainage means is configured to maintain the water level in the drainage body 8 at the maximum water level W1 while water is further flowing into the drainage body 8 at an inflow rate exceeding the second drainage rate.

The first drain channel 12 and the second drain channel 14 are washed with the water discharged from the kitchen faucet device 6 so that the sealing water level is higher than the sealing water level W2 in the first drain channel rising portion 12b. It functions as a water level raising means for raising the water level to the maximum water level W1 set as the water level of the sealing water at that time. At least the second drainage flow path 14 reduces the water level in the drainage main body 8 when the inflow amount of water per unit time exceeding the second drainage amount per unit time of the throttle section 30 flows into the drainage main body 8. , higher than the sealing water level W2 and at least up to the maximum water level W1.

Next, the operation (function) of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 7 to 12. FIG.
FIG. 7 is a partially enlarged cross-sectional view showing a state in which water containing dirt has flowed in the standby state of the drainage system according to the first embodiment of the present invention, and FIG. 8 is a drainage main body of the drainage system according to the first embodiment of the present invention. FIG. 9 is a partially enlarged cross-sectional view showing a state in which water starts to flow into the drainage system according to the first embodiment of the present invention, and FIG. FIG. 10 is a partially enlarged cross-sectional view showing a state in which water is discharged to an outlet channel through the channel and the water level in the rising portion of the first drainage channel is raised; FIG. 10 is a drainage system according to the first embodiment of the present invention; 11 is a partially enlarged cross-sectional view showing a state in which water further flows into the drainage body and the water level in the first drainage channel reaches the maximum water level, and FIG. 11 is a drainage of the drainage system according to the first embodiment of the present invention FIG. 11 is a partially enlarged cross-sectional view showing a state in which water stops flowing into the main body, flows out to the outlet channel through the second drainage channel, and the water level in the first drainage channel gradually decreases; FIG. 12 is a partially enlarged cross-sectional view showing the state of the drainage system according to the first embodiment of the present invention returning to a standby state after a series of cleaning operations. In FIGS. 7 to 12, the portion where water is stored in the drainage body is indicated by dotted lines.

FIG. 7 shows a standby state before water is spouted from the kitchen faucet device 6 . In the standby state, the water level in the drainage main body 8 is at the sealing water level W2 at the first drainage channel ascending portion 12b and the connecting portion 12a of the first drainage channel 12 and the second drainage channel . Since the ceiling portion 12f between the connection portion 12a and the first drainage channel ascending portion 12b is positioned below the sealing water level W2, the outlet channel 26 and the inlet portion 10 are pneumatically isolated in the standby state. , odors are reliably prevented from rising from the outlet channel 26 to the inlet portion 10. - 特許庁In the standby state, the kitchen faucet device 6 is in a state where water is stopped, and the ultrasonic oscillator 22 is also in a stopped state. In the standby state, when the user pours water containing dirt E into the sink 4 , this water flows into the drainage body 8 . For example, as shown in FIG. 7, dirt E adheres to the connecting portion 12a, the inlet portion 10, the mesh basket 28, and the like.

As shown in FIG. 8, when water is spouted from the kitchen faucet device 6, water flows from the bottom surface 4b of the sink 4 through the lid 18 into the inlet 10 as indicated by an arrow F1. As indicated by an arrow F2, the water that has flowed into the inlet portion 10 passes through the mesh basket 28 and further flows down. Then, the water flowing down from the mesh basket 28 is supplied into the connecting portion 12a of the first drainage channel 12 as indicated by an arrow F3. As indicated by an arrow F4, the water supplied into the connecting portion 12a flows from the intrusion suppressing portion 16 into the inlet portion 14a of the second drainage channel 14. As shown in FIG.

As indicated by an arrow F5, the water that has flowed into the inlet portion 14a of the second drainage channel 14 rises and passes through the throttle portion 30. As shown in FIG. As indicated by an arrow F6, water that has passed through the throttle section 30 reaches the outlet section 14b over the top section 14c. As indicated by arrow F7, the water flowing out from the outlet portion 14b is drained to the outlet channel 26. As shown in FIG. The second drainage channel 14 can discharge a second amount of drainage to the outlet channel 26 per unit time.

When the inflow amount per unit time (or the total inflow amount per fixed time) exceeding the second drainage amount per unit time (or the total water discharge amount per fixed time) of the constricted part 30 flows into the drainage body 8 , the water cannot completely flow out from the second drainage channel 14 and is retained in the drainage main body 8 . Therefore, as indicated by an arrow F8, the first drainage channel 12 and the second drainage channel 14 cause the water flowing into the drainage body 8 to flow out to the outlet channel 26 through the second drainage channel 14. while the water level in the connection portion 12a of the drainage main body portion 8 and the first drainage channel rising portion 12b is automatically raised. At this time, the water level automatically rises without user's operation. Since the second drainage channel 14 includes the throttle part 30 that throttles a part of the channel, the second drainage amount per unit time can be suppressed relatively low, and a relatively small amount of water can be used to drain the first water. It is possible to raise the water level in the drainage channel rising portion 12b.

In FIG. 8, the water level inside the drainage body 8 is the third water level W3. The drainage main body 8 has an enlarged diameter portion 8a that makes it difficult to clean dirt on the drainage main body 8 at the third water level W3. Therefore, as will be described later, when the water level becomes equal to or higher than the third water level W3, the control device 24 causes the ultrasonic oscillator 22 to start oscillating, relatively lengthens the time for cleaning the enlarged diameter portion 8a, and increases the diameter. This improves the ultrasonic cleaning performance of the portion 8a.

When water further flows into the drainage main body 8 as indicated by arrow F9 in FIG. While flowing out to the channel 26, the water level in the connection part 12a of the drainage body part 8 and the first drainage channel rising part 12b is raised as indicated by the arrow F11.

As shown by arrow F12 in FIG. 12c to a maximum water level W1. When the water level in the first drainage channel 12 reaches the maximum water level W1, the water flowing into the drainage main body 8 flows through the second drainage channel 14 as indicated by the arrow F13 and the outlet channel 26. , and flows out from the top portion 12c of the first drainage channel 12 to the descending portion 12d as indicated by an arrow F14.

In FIG. 10, even if the water level in the first drainage channel 12 reaches the maximum water level W1 and the water is further inflowed into the drainage main body 8 at an inflow amount exceeding the second drainage amount, the inside of the drainage main body 8 is maintained at the maximum water level W1. At this time, the maximum water level W1 is the height of the inlet portion 10 and is located above the mesh basket 28 . As shown by arrow F13, the drainage from the second drainage channel 14 continues. Channel parts at a height below the inlet part 10 of the drainage main body 8 where dirt E is likely to adhere, for example, the inlet part 10, the mesh basket 28, the inlet part 14a of the second drainage channel 14, the second drainage channel rising The portion 14h, the constricted portion 30, the intrusion suppression portion 16, the connection portion 12a of the first drainage channel 12, the first drainage channel ascending portion 12b, the top portion 12c, etc. are generally submerged in water.

As will be described later, the control device 24 causes the ultrasonic oscillator 22 to oscillate during at least part of the period during which the water level in the drainage body 8 reaches the maximum water level W1. As a result, ultrasonic cleaning can be performed by oscillating the ultrasonic waves K over substantially the entire drainage main body 8, and furthermore, flow path portions where dirt E in the drainage main body 8 tends to adhere, such as the inlet 10, the net, etc. Ultrasonic cleaning can be performed on the cage 28, the enlarged diameter portion 8a, the intrusion suppressing portion 16, the inlet portion 14a of the second drainage channel 14, the constricted portion 30, and the like. An ultrasonic wave K is shown in FIG. 10 as an example of the ultrasonic wave. An ultrasonic node C is formed by interference of ultrasonic waves oscillated in standing water. Specifically, the oscillated ultrasonic wave is interfered with the ultrasonic wave reflected by the stagnant water surface S, and a standing wave having an antinode D and a node C is formed. Therefore, regions of node C and antinode D are formed in the sealing water. For example, the node C may extend horizontally in a strip shape. The ultrasonic cleaning performance at the ultrasonic node C is slightly lower than the ultrasonic cleaning performance at the ultrasonic antinode D. When the height of the stagnant water surface S moves up and down, the interference position of the ultrasonic wave K changes, and the positions of the nodes C and the antinodes D also change.

The first drainage channel 12 and the second drainage channel 14 drain the water flowing into the drainage body 8 to the outlet channel 26 so that the water level in the drainage body 8 does not exceed the maximum water level W1. there is As a result, it is possible to prevent the water level in the drainage main body 8 from exceeding the maximum water level W1 and the water in the drainage main body 8 from overflowing from the inlet 10 to the bottom surface 4b of the sink 4.
When the inflow amount of water per unit time exceeding the second drainage amount per unit time of the second drainage channel 14 continues to flow into the drainage main body 8, the inflow amount per unit time is the second drainage channel 14 As long as it does not exceed the total value of the second drainage amount per unit time and the first drainage amount per unit time of the first drainage channel 12, the water level rise in the drainage main body is between the sealing water level W2 and the maximum water level W1 can be controlled to In addition, the total value of the second drainage amount per unit time of the second drainage channel 14 and the first drainage amount per unit time of the first drainage channel 12 is The amount of water supplied from the device 6 is set to a value that does not exceed this total value.

Furthermore, in this embodiment, the user does not need to perform a closing operation of a drain valve or the like provided in the conventional drain channel, and water is supplied into the drain main body 8, so that the first drain channel 12 And based on the configuration of the second drainage channel 14, the water level in the drainage main body 8 automatically reaches the maximum water level W1, and the inlet 10, the mesh basket 28, etc. can be automatically ultrasonically cleaned. can.

As shown in FIG. 11, when the inflow of water into the drainage main body 8 is stopped or the flow rate of water is reduced, as indicated by arrows F15 and F16, the upper portion 14c of the second drainage channel 14 Water flows out to the outlet channel 26 through the second drainage channel 14, and as indicated by an arrow F17, the water level of the connection portion 12a of the first drainage channel 12 and the first drainage channel rising portion 12b gradually increases. descend. The second drainage channel 14 continues to drain water when the water level is above the top 14c. In this way, the first drainage channel 12 and the second drainage channel 14 functioning as water level raising means automatically increase the water level in the drainage body 8 when water stops flowing into the drainage body 8. It is formed to be lowered to the sealing water level W2.

As shown in FIG. 12, the inflow of water into the drainage main body 8 ceases, and the water level of the connecting portion 12a of the first drainage channel 12 and the water level of the first drainage channel rising portion 12b rises to the top of the second drainage channel 14. When the pressure drops to 14c, the outflow of water from the second drainage channel 14 ends, and the drainage system 1 returns to the standby state. At this time, the water level in the drainage body 8 is the sealing water level W2.

Next, the operation (function) of the ultrasonic oscillator 22 of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 13 and 14. FIG.
FIG. 13 is a flow chart showing the control contents of the control device in the drainage system according to the first embodiment of the present invention.
FIG. 14 is a timing chart showing the detection state of spouting water by the flow rate sensor, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the drainage system according to the first embodiment of the present invention. In FIG. 13, S indicates each step.

As shown in FIG. 14, at time t0 when the process starts, the kitchen faucet device 6 is in a standby state before water is spouted. In the drainage body 8, water is stored at the sealing water level W2 (see FIG. 7).
First, in S1 of FIG. 13, the controller 24 determines whether or not the flow rate sensor 20 has detected water.
When the flow rate sensor 20 detects the spouted water (when the detection state becomes ON as illustrated at time t1 in FIG. A supply start signal corresponding to the start is transmitted to the control device 24 . When the control device 24 receives the supply start signal from the flow rate sensor 20, the control device 24 can determine that water discharge from the water discharge portion 6b of the kitchen faucet device 6 has started, so the process proceeds to S2.
When the flow rate sensor 20 does not detect the spouted water (when the detection state becomes OFF as illustrated at time t3 in FIG. 14), the control device 24 controls the water spouting portion of the kitchen faucet device Since it can be determined that water discharge from 6b has ended or is still stopped, the process proceeds to S5.

Next, at S<b>2 , the control device 24 calculates the water level in the drainage body 8 from the flow rate of water detected by the flow rate sensor 20 . Specifically, the amount of water flowing into the drainage body 8 is calculated by multiplying the flow rate of water detected by the flow rate sensor 20 per unit time by the time during which water is being discharged, and from this amount of water flowing into the second The water level in the drainage body 8 is calculated by subtracting the drainage flow rate from the drainage channel 14 . Therefore, the control device 24 can relatively accurately calculate and estimate the water level in the drainage body 8 .

Next, in S3 of FIG. 13, the control device 24 determines whether or not the water level in the drainage body 8 has reached the third water level W3 by the calculation in S2.
As shown at time t2 in FIG. 14, when the water level in the drainage main body 8 reaches the third water level W3, the control device 24 sets the time for cleaning the expanded diameter portion 8a by performing ultrasonic cleaning. Since it can be judged that it is possible to improve the ultrasonic cleaning performance on the enlarged diameter portion 8a side by making it relatively long, the process proceeds to S4 in order to start the oscillation by the ultrasonic oscillator 22 .
When the water level in the drainage main body 8 has not reached the third water level W3, the control device 24 suppresses the oscillation of the ultrasonic oscillator 22, thereby suppressing the deterioration of the durability of the ultrasonic oscillator 22. Since it can be determined that the

Next, in S4, the control device 24 causes the ultrasonic oscillator 22 to oscillate ultrasonic waves (ON state) (time t2). Therefore, after receiving the supply start signal from the flow sensor 20 (time t1), the control device 24 causes the ultrasonic oscillator to start oscillating before the water level in the drainage body 8 rises to the maximum water level W1. ing. The control device 24 causes the ultrasonic oscillator 22 to start oscillating while the water level in the drainage main body 8 is rising after the start of rising. The control device 24 causes the ultrasonic oscillator to start oscillating when the water level in the drainage main body 8 becomes equal to or higher than a third water level W3 at which a portion where dirt on the drainage main body 8 is difficult to wash is formed.

The controller 24 then returns to S1. The control device 24 repeats the determination and processing of S1, S2, S3 and S4 while the flow rate sensor 20 is detecting water. Thereafter, the control device 24 causes the ultrasonic oscillator 22 to continuously oscillate ultrasonic waves. Also, the ultrasonic waves oscillated by the ultrasonic oscillator 22 are kept at a constant frequency.

As a modification, in S3 and S4, the control device 24 may cause the ultrasonic wave to start oscillating when the water level in the drainage main body 8 obtained by the calculation in S2 starts to rise (time t2'). (Indicated by the dashed line in FIG. 14). By oscillating ultrasonic waves from the start of the water level rise, ultrasonic cleaning for suppressing uneven cleaning during the water level rise, which will be described later, can be effectively performed from the start of the water level rise. Note that the control device 24 may start the oscillation of the ultrasonic waves when the water level in the drainage main body 8 is at the third water level W3 from the time when the water level starts to rise.
Further, as a further modification, in S3 and S4, the control device 24 oscillates ultrasonic waves when the water level in the drainage body 8 obtained by the calculation in S2 is higher than the third water level W3. good too. By suppressing oscillation by the ultrasonic oscillator 22 while the water level is rising, it is possible to suppress deterioration in the durability of the ultrasonic oscillator 22 .

As shown in FIG. 14, the control device 24 causes the ultrasonic oscillator 22 to start oscillating at time t2 in conjunction with the detection of the spouted water by the flow rate sensor 20 at time t1, and the water level in the drainage body 8 rises. is the maximum water level W1, the ultrasonic oscillator 22 is caused to oscillate during at least a part of the period.
Further, the control device 24 causes the ultrasonic oscillator 22 to start oscillating before the water level in the drainage body 8 rises to the maximum water level W1. The oscillated ultrasonic wave K interferes with the ultrasonic wave K reflected by the water surface, and an antinode D and a node C of the ultrasonic wave K are formed (see FIG. 10). At the ultrasonic node C, the ultrasonic cleaning performance is slightly reduced, while at the ultrasonic antinode D, the ultrasonic cleaning performance is slightly increased. When the position of the water level (water surface) changes (rises or descends), the positions of the antinode D of the interfering ultrasonic wave and the node C change, so the position of the node C with relatively low cleaning ability remains the same. You can change without stopping. In this way, the control device 24 can effectively perform ultrasonic cleaning that suppresses uneven cleaning during the rise of the water level. Further, the control device 24 causes the ultrasonic oscillator 22 to already oscillate when the water level in the drainage body 8 reaches the maximum water level W1. In addition, the control device 24 causes the ultrasonic oscillator 22 to continue to oscillate during the period from the start of oscillation until the water level of the seal water reaches the maximum water level W1 and during the period during which the water level is at the maximum water level W1.

When water spouting from the kitchen faucet device 6 is finished in S1 of FIG. 13, the process proceeds to S5 (time t3 in FIG. 14).
In S<b>5 , the control device 24 determines whether or not ultrasonic waves are being oscillated by the ultrasonic oscillator 22 .
When ultrasonic waves are oscillated by the ultrasonic oscillator 22, the control device 24 makes it difficult for uneven washing to occur while the water level in the drain main body 8 is dropping as water spouting from the kitchen faucet device 6 is stopped. In order to perform cleaning, the process proceeds to S6.
When ultrasonic waves are not oscillated by the ultrasonic oscillator 22, the control device 24 can determine that water spouting from the kitchen faucet device 6 is stopped and that the ultrasonic oscillator 22 is also stopped and is in a standby state. So go to return and go back to start.

Next, in S<b>6 , the control device 24 calculates the water level in the drainage body 8 based on the elapsed time from the stoppage of water discharge detected by the flow rate sensor 20 . Specifically, when the flow rate sensor 20 detects the stop of water discharge, the water level is the maximum water level W1, and the amount of water discharged from the second drainage channel 14 is subtracted from the amount of water stored at the maximum water level W1. Calculate the water level in the main body 8 . Therefore, the control device 24 can relatively accurately estimate the water level in the drainage body 8 over time.

Next, in S7, the control device 24 determines whether or not the water level inside the drainage body 8 has reached the sealing water level W2.
As shown at time t4 in FIG. 14, when the water level in the drainage body 8 reaches the sealing water level W2, the control device 24 effectively performs ultrasonic cleaning to suppress uneven cleaning during the water level drop. In addition, in order to make it difficult to reduce the durability of the ultrasonic oscillator 22, it can be determined that it is effective to stop the ultrasonic oscillator 22 thereafter, so the process proceeds to S8.
When the water level in the drainage main body 8 has not reached the sealing water level W2, the control device 24 continues the oscillation of the ultrasonic oscillator 22 to suppress uneven cleaning during the water level drop. can be effectively performed, so proceed to RETURN and return to START. While the flow rate sensor 20 detects the water discharge stop and the ultrasonic oscillator 22 continues to oscillate, the control device 24 controls S1, S5, S1, S5, and S5 until the water level in the drainage body 8 reaches the sealing water level W2. The determination and processing of S6 and S7 are repeated.

Next, in S8, the control device 24 stops the ultrasonic wave oscillation by the ultrasonic oscillator 22 (OFF state). The controller 24 stops the ultrasonic oscillator 22 from oscillating after the water level in the drainage body 8 drops to the seal water level W2 in order to clean the drainage body 8 more reliably. After executing S8, the control device 24 proceeds to RETURN and returns to START.
In order to make it difficult for the durability of the ultrasonic oscillator 22 to decrease, the control device 24 controls the water level inside the drainage body 8 at any time during the drop from the maximum water level W1 (for example, when the water level drops to the third water level W3 and At time t4'), the oscillation by the ultrasonic oscillator 22 may be stopped (indicated by the dotted line in FIG. 14). The time when the water level in the drainage main body 8 falls includes the time when the water level in the drainage main body 8 is falling and when the water level in the drainage main body 8 reaches the sealing water level W2 as it falls (almost at the same time). As a result, dirt peeled off inside the drainage body 8 by ultrasonic cleaning can be discharged as the water level drops. Furthermore, since the dirt can be discharged from the drainage body 8, it is possible to suppress the redeposition of the dirt.

Next, the operation of the ultrasonic oscillator 22 of the first modified example of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 15 and 16. FIG. Regarding the operation (action) of the first modified example of the drainage system according to the first embodiment of the present invention, only the points that differ from the operation (action) of the drainage system 1 according to the first embodiment will be described, and the same parts will not be described. omitted.
FIG. 15 is a flow chart showing the control contents of the control device in the first modification of the drainage system according to the first embodiment of the present invention.
FIG. 16 is a timing chart showing the detection state of discharged water by the flow rate sensor, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the first modification of the drainage system according to the first embodiment of the present invention. In FIG. 15, S indicates each step.

As shown in FIG. 15, at time t10 when the process starts, the kitchen faucet device 6 is in a standby state before water is spouted. In the drainage body 8, water is stored at the sealing water level W2 (see FIG. 7).
First, in S11 of FIG. 15, the control device 24 determines whether or not the flow rate sensor 20 has detected the spouted water.
When the flow rate sensor 20 detects water to be spouted (when the detection state turns ON as illustrated at time t11 in FIG. 16), the control device 24 controls the water spouting portion 6b of the kitchen faucet device 6. Since it can be determined that water spouting from the bottom has started, the process proceeds to S12.
When the flow rate sensor 20 does not detect water to be spouted (when the detection state is OFF as illustrated at time t12 in FIG. 16), the control device 24 controls the water spouting portion Since it can be judged that water spouting from 6b has ended or is still stopped, the process proceeds to S13.

Next, in S12, the control device 24 causes the ultrasonic oscillator 22 to oscillate ultrasonic waves (ON state) (time t11). Therefore, after receiving the supply start signal from the flow sensor 20 (time t11), the control device 24 causes the ultrasonic oscillator to start oscillating before the water level in the drainage body 8 rises to the maximum water level W1. ing. Here, ultrasonic cleaning by the ultrasonic oscillator 22 is started substantially at the same time when the flow rate sensor 20 detects water discharge. In this case, the control device 24 can simply and quickly start the oscillation of the ultrasonic oscillator 22 without calculating the water level in the drainage body 8 . The controller 24 then returns to S11. The controller 24 repeats the determination and processing of S11 and S12 while the flow rate sensor 20 is detecting water.

As shown in FIG. 16, the control device 24 causes the ultrasonic oscillator 22 to start oscillating at time t11 in conjunction with the detection of the spouted water by the flow rate sensor 20 at time t11, and the water level in the drainage body 8 is the maximum water level W1, the ultrasonic oscillator 22 is caused to oscillate during at least a part of the period. Further, the control device 24 causes the ultrasonic oscillator 22 to start oscillating before the water level in the drainage body 8 rises to the maximum water level W1. Further, the control device 24 causes the ultrasonic oscillator 22 to already oscillate when the water level in the drainage body 8 reaches the maximum water level W1. In addition, the control device 24 causes the ultrasonic oscillator 22 to continue oscillating throughout the period from the start of oscillation until the water level in the drainage main body 8 reaches the maximum water level W1 and the period during which the water level is at the maximum water level W1. ing.

When water spouting from the kitchen faucet device 6 is completed in S11 of FIG. 15, the process proceeds to S13 (time t12 of FIG. 16).
In S<b>13 , the control device 24 determines whether or not ultrasonic waves are being oscillated by the ultrasonic oscillator 22 .
When ultrasonic waves are oscillated by the ultrasonic oscillator 22, the control device 24 causes the water level in the drain main body 8 to remain at its maximum due to the time difference from when the water discharge from the kitchen faucet device 6 stops. In order to effectively perform ultrasonic cleaning while the water level is W1, the process proceeds to S14.
When ultrasonic waves are not oscillated by the ultrasonic oscillator 22, the control device 24 can determine that water spouting from the kitchen faucet device 6 is stopped and that the ultrasonic oscillator 22 is also stopped and is in a standby state. So go to return and go back to start.

Next, in S14, the control device 24 determines whether or not the water level inside the drainage main body 8 is no longer the maximum water level W1.
As shown at time t13 in FIG. 16, when the water level in the drain main body 8 is no longer the maximum water level W1 (if YES), the control device 24 effectively keeps ultrasonic waves until the end of the period of the maximum water level W1. Since it can be determined that deterioration in the durability of the ultrasonic oscillator 22 can be suppressed after cleaning, the process proceeds to S15.
If the water level in the drain body 8 is likely to still be maintained at the maximum water level W1 (NO), the controller 24 effectively causes ultrasonic cleaning to continue until the end of the period at the maximum water level W1. , go to return, go back to start. While the flow rate sensor 20 detects the stoppage of water discharge and the ultrasonic oscillator 22 continues to oscillate, the control device 24 performs S11, S13, and S14 until the water level in the drainage body 8 is no longer the maximum water level W1. Repeat the determination and processing.

Next, in S15, the control device 24 stops the ultrasonic wave oscillation by the ultrasonic oscillator 22 (OFF state). After executing S15, the control device 24 proceeds to RETURN and returns to START.

Next, the operation of the ultrasonic oscillator 22 of the second modification of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 17 and 18. FIG. Regarding the operation (function) of the second modification of the drainage system according to the first embodiment of the present invention, only the points that differ from the operation (function) of the drainage system 1 according to the first embodiment will be described, and the same parts will not be described. omitted.
FIG. 17 is a flow chart showing the control contents of the control device in the second modified example of the drainage system according to the first embodiment of the present invention, and FIG. 18 is a second modified example of the drainage system according to the first embodiment of the present invention. 3 is a timing chart showing the detection state of spouting water by the flow rate sensor, the water level in the drainage body, and the operating state of the ultrasonic oscillator. In FIG. 17, S indicates each step.

As shown in FIG. 17, at time t20 when the process starts, the kitchen faucet device 6 is in a standby state before water is spouted.
First, in S21 of FIG. 17, the control device 24 determines whether or not the flow rate sensor 20 has detected the spouted water.
When the flow sensor 20 detects water to be spouted (when the detection state turns ON as illustrated at time t21 in FIG. 18), the control device 24 controls the water spouting portion 6b of the kitchen faucet device 6. Since it can be determined that water spouting from the bottom has started, the process proceeds to S22.
When the flow sensor 20 does not detect water to be spouted (when the detection state is OFF as illustrated at time t23 in FIG. 18), the control device 24 controls the water spouting portion Since it can be judged that water spouting from 6b has ended or is still stopped, the process proceeds to S25.

Next, in S<b>22 , the control device 24 calculates the water level in the drainage body 8 from the flow rate of water detected by the flow rate sensor 20 . Specifically, the water level in the drainage body 8 is calculated by multiplying the flow rate per unit time of water detected by the flow rate sensor 20 by the time during which water is being spouted and subtracting the drainage flow rate from the second drainage channel 14. . Therefore, the control device 24 can estimate the water level in the drainage body 8 relatively accurately.

Next, in S23 of FIG. 17, the control device 24 determines whether or not the water level in the drainage body 8 has reached the maximum water level W1 by the calculation in S22.
As shown at time t22 in FIG. 18, when the water level in the drainage body 8 reaches the maximum water level W1, the control device 24 can effectively perform ultrasonic cleaning while the water level is at the maximum water level W1. Since it can be determined that it is possible, the process proceeds to S24 in order to start oscillation by the ultrasonic oscillator 22 .
When the water level in the drainage main body 8 has not reached the maximum water level W1, the control device 24 suppresses the oscillation of the ultrasonic oscillator 22, thereby suppressing the deterioration of the durability of the ultrasonic oscillator 22. Since it can be determined that it is possible, the process returns to S21.

Next, in S24, the control device 24 causes the ultrasonic oscillator 22 to oscillate ultrasonic waves (ON state) (time t22 in FIG. 18). The controller 24 then returns to S21. The controller 24 repeats the determination and processing of S21, S22, S23 and S24 while the flow rate sensor 20 is detecting water.

As shown in FIG. 18, the control device 24 causes the ultrasonic oscillator 22 to start oscillating at time t22 in conjunction with the detection of the spouted water by the flow rate sensor 20 at time t21, and the water level in the drainage body 8 rises. is the maximum water level W1, the ultrasonic oscillator 22 is caused to oscillate during at least a part of the period. Further, the control device 24 causes the ultrasonic oscillator 22 to start oscillating before the water level in the drainage body 8 rises to the maximum water level W1. Further, the control device 24 causes the ultrasonic oscillator 22 to already oscillate when the water level in the drainage body 8 reaches the maximum water level W1. In addition, the control device 24 causes the ultrasonic oscillator 22 to continue oscillating throughout the period in which the water level in the drainage main body 8 is the maximum water level W1.

When water spouting from the kitchen faucet device 6 is finished in S21 of FIG. 17, the process proceeds to S25 (time t23 of FIG. 18).
In S<b>25 , the control device 24 determines whether or not ultrasonic waves are being oscillated by the ultrasonic oscillator 22 .
When the ultrasonic wave is oscillated by the ultrasonic oscillator 22, the control device 24 controls the washing process so that uneven washing is unlikely to occur while the water level in the drain main body 8 is lowered due to the stoppage of water spouting from the kitchen faucet device 6. , the process proceeds to S26.
When ultrasonic waves are not oscillated by the ultrasonic oscillator 22, the control device 24 can determine that water spouting from the kitchen faucet device 6 is stopped and that the ultrasonic oscillator 22 is also stopped and is in a standby state. So go to return and go back to start.

Next, at S<b>26 , the control device 24 calculates the water level in the drainage body 8 based on the elapsed time from the stoppage of water discharge detected by the flow rate sensor 20 . Specifically, when the flow rate sensor 20 detects that the water discharge is stopped, the water level is the maximum water level W1, and the drainage main body portion 8 is obtained by subtracting the drainage flow rate from the second drainage channel 14 from the maximum water level W1. Calculate the water level in Therefore, the control device 24 can relatively accurately estimate the water level in the drainage body 8 over time.

Next, in S27, the control device 24 determines whether or not a predetermined time has passed since the water level in the drainage body 8 reached the sealing water level W2.
As shown in FIG. 18, when a predetermined time has passed (time t25) after the water level in the drainage body 8 reaches the sealing water level W2 (time t24), the controller 24 starts ultrasonic cleaning. It was determined that the ultrasonic cleaning, which was performed with a margin until after reaching the sealing water level W2 and suppressed the unevenness of cleaning during the water level decrease, was able to be performed more reliably until the water level fluctuation converged near the sealing water level W2. Proceed to S28.
If the predetermined time has not elapsed since the water level in the drainage main body 8 reached the sealing water level W2 (time t24), the control device 24 causes the ultrasonic oscillator 22 to continue the oscillation to reduce the water level. Since it can be determined that ultrasonic cleaning for suppressing uneven cleaning during descent can be effectively performed until the water level fluctuation converges in the vicinity of the sealing water level W2, the process proceeds to RETURN and returns to START. While the flow rate sensor 20 detects the water discharge stop and the ultrasonic oscillator 22 continues to oscillate, the control device 24 waits for a predetermined time to elapse after the water level in the drainage body 8 reaches the sealing water level W2. The determination and processing of S21, S25, S26 and S27 are repeated until the determination is made. The predetermined time is set in the range of 1 second to 5 minutes, preferably 1 second to 2 minutes.

Next, in S28, the control device 24 stops the ultrasonic wave oscillation by the ultrasonic oscillator 22 (OFF state). In order to clean the drainage body 8 more reliably, the control device 24 stops the oscillation of the ultrasonic oscillator after the water level in the drainage body 8 has been lowered to the sealing water level W2. After executing S28, the control device 24 proceeds to RETURN and returns to START.
Therefore, the control device 24 stops the oscillation by the ultrasonic oscillator 22 after the water level is lowered to the sealing water level W2.

Next, the operation (action) of the ultrasonic oscillator 22 of the third modified example of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 19 to 21. FIG.
19 is a front view of the configuration of the third modification of the drainage system according to the first embodiment of the present invention, and FIG. 20 is a diagram of the third modification of the drainage system according to the first embodiment of the present invention. 4 is a flowchart showing the contents of control by a control device; FIG. 21 is a timing chart showing the state of the operation switch, the water level in the drainage body, and the operating state of the ultrasonic oscillator in the third modification of the drainage system according to the first embodiment of the present invention. In FIG. 20, S indicates each step.

In this modification, the drainage system 1 further includes an operation switch 34 for performing ultrasonic cleaning by the ultrasonic oscillator 22, and a supply start signal for transmitting a supply start signal corresponding to the start operation of the operation switch 34 to the control device 24. A signal transmission unit 36, a supply flow path 38 that communicates with the water discharge side flow path 6c on the water supply source side and the drainage main body 8, and an on-off valve 40 that opens and closes the flow path of the supply flow path 38 to control the water supply. and a flow rate sensor 20 provided on the supply channel 38 (see FIG. 19). The operation switch 34 and the supply start signal transmitter 36 are provided in the kitchen faucet device 6 . The operation switch 34 is in the ON state (the state in which the supply start signal is transmitted) until the end operation is performed after the start operation is performed. When the operation switch 34 is operated to start, even if the pressing operation is not necessarily continued, the supply start signal is transmitted from the supply start signal transmission unit 36 to be turned on, and the operation switch 34 is turned on by the control device 24. When the end operation is performed, the supply start signal transmitting section 36 may transmit a supply end signal to cause the control device 24 to recognize that the operation switch 34 is in the OFF state. Alternatively, the control device 24 may control such that the end operation is omitted and the operation is automatically ended when a predetermined time elapses after the start operation by the operation switch 34 .

The supply channel 38 is connected to the bottom of the sink 4 at its downstream side and forms a channel for supplying water to the drain body 8 for ultrasonic cleaning. The supply channel 38 may be connected to the water supply channel 9 at its upstream side, or may be connected to a water supply unit that supplies hot water and/or water other than the water supply channel 9 . A flow rate sensor 20 may be provided on the supply channel 38 . The downstream end of the supply flow path 38 is connected to the wall surface of the sink 4 to form a spout portion 38a that spouts water toward the bottom portion 4a of the sink 4. As shown in FIG.

When the operation switch 34 is operated to switch between the ON state and the OFF state, opening and closing of the on-off valve 40 are switched accordingly. These flow rate sensor 20 , operation switch 34 , supply start signal transmitter 36 and on-off valve 40 are electrically connected to control device 24 .

As shown in FIG. 21, at time t30 when the process starts, the kitchen faucet device 6 is in a standby state before water is spouted. In the drainage body 8, water is stored at the sealing water level W2 (see FIG. 7).
First, in S31 of FIG. 20, the control device 24 receives the supply start signal from the supply start signal transmission unit 36 after the operation switch 34 is operated to start ultrasonic cleaning, or if the supply start signal is received, the supply ends. It is determined whether or not a signal has been received (or whether or not a supply start signal has been continuously received).
When the control device 24 receives the supply start signal from the supply start signal transmission unit 36 (when the operation switch 34 is turned on as illustrated at time t31 in FIG. 21), the control device 24 turns on the kitchen faucet. Since it can be judged that the water discharge from the water discharge part 6b of the device 6 has started, the process proceeds to S32.
When the control device 24 has not received the supply start signal from the supply start signal transmission unit 36, or has received the supply end signal after receiving the supply start signal (or has not continuously received the supply start signal) (Fig. 21), the control device 24 determines that the water discharge from the water discharge portion 6b of the kitchen faucet device 6 has ended or remains stopped. Since it is possible, it progresses to S34.

Next, in S32, the control device 24 determines whether or not a predetermined time T has passed while the water is being supplied after the control device 24 receives the supply start signal. After the predetermined time T has passed, the water level inside the drainage body 8 starts to rise.
When the predetermined time T has passed, the control device 24 controls the water discharged from the water discharger 6b to reach the drainage main body 8, and the water to flow into the drainage main body 8, thereby making the drainage main body 8 more effective. Since it can be determined that the washing can be performed immediately, the process proceeds to S33.
If the predetermined time T has not elapsed, the control device 24 determines that the water discharged from the water discharger 6b has not reached the drainage body 8, and the water has not yet flowed into the drainage body 8. Since it can be determined that it is in the state, the process returns to S31.

Next, in S33, the control device 24 causes the ultrasonic oscillator 22 to oscillate ultrasonic waves (ON state) (time t32). Therefore, after receiving the supply start signal from the supply start signal transmission unit 36, the control device 24 causes the ultrasonic oscillator 22 to start oscillating before the water level in the drainage main unit 8 rises to the maximum water level W1. ing.

The controller 24 then returns to S31. The control device 24 repeats the determination and processing of S31, S32 and S33 while the operation switch 34 is in the ON state.

When the operation switch 34 is operated to be turned off, a supply end signal is sent to the control device 24 , and the control device 24 ends the water supply to the drainage body 8 . When the supply of water to the drainage body 8 is terminated in S31 of FIG. 20, the process proceeds to S34 (time t33 of FIG. 21).
In S<b>34 , the control device 24 determines whether or not ultrasonic waves are being oscillated by the ultrasonic oscillator 22 .
When ultrasonic waves are oscillated by the ultrasonic oscillator 22, the control device 24 causes uneven washing while the water level in the drainage main body 8 is decreasing as the water supply to the drainage main body 8 is stopped. In order to perform cleaning that is difficult to perform, the process proceeds to S35.
When ultrasonic waves are not oscillated by the ultrasonic oscillator 22, the control device 24 determines that the supply of water to the drainage main body 8 is stopped and the ultrasonic oscillator 22 is also stopped and is in a standby state. So we can go to the return and back to the start.

Next, in S35, the control device 24 calculates the water level in the drainage body 8 based on the elapsed time since the control device 24 stopped receiving the supply start signal. Specifically, when the control device 24 no longer receives the supply start signal, the water level is the maximum water level W1, and the drainage flow rate from the second drainage channel 14 is subtracted from the water storage amount at the maximum water level W1. Then, the water level in the drainage body 8 is calculated. Therefore, the control device 24 can relatively accurately estimate the water level in the drainage body 8 over time.

Next, in S36, the control device 24 determines whether or not a predetermined time has passed since the water level in the drainage body 8 reached the sealing water level W2.
As shown in FIG. 21, when the water level in the drainage body 8 reaches the sealing water level W2 (time t34) and a predetermined time has passed (time t35), the controller 24 controls the It is determined that the ultrasonic cleaning for suppressing uneven cleaning has been more reliably performed until the water level fluctuation converges in the vicinity of the sealing water level W2, and the process proceeds to S37.
If the predetermined time has not elapsed since the water level in the drainage main body 8 reached the sealing water level W2 (time t34), the control device 24 causes the ultrasonic oscillator 22 to continue the oscillation so that the water level Since it can be determined that ultrasonic cleaning for suppressing uneven cleaning during descent can be effectively performed until the water level fluctuation converges in the vicinity of the sealing water level W2, the process proceeds to RETURN and returns to START. While the control device 24 has not received the supply start signal and the ultrasonic oscillator 22 continues to oscillate, the control device 24 waits until the water level in the drainage body 8 reaches the seal water level W2. The determination and processing of S31, S34, S35 and S36 are repeated until a predetermined time elapses. The predetermined time is set in the range of 1 second to 5 minutes, preferably 1 second to 2 minutes.

Next, in S37, the control device 24 stops the ultrasonic wave oscillation by the ultrasonic oscillator 22 (OFF state). The control device 24 more reliably performs ultrasonic cleaning for suppressing uneven cleaning until the water level fluctuation near the sealing water level W2 converges. Later, the oscillation by the ultrasonic oscillator is stopped. After executing S37, the control device 24 proceeds to RETURN and returns to START.
Therefore, the control device 24 stops the oscillation by the ultrasonic oscillator 22 after the water level is lowered to the sealing water level W2.

In addition, in this modification, the drainage system 1 may further include a flow rate sensor 20 on the supply channel to the drainage body portion 8 . Since the flow sensor 20 can detect the supply flow rate of water, the water level in the drainage body 8 can be calculated, and the water level in the drainage body 8 can be assumed relatively accurately. Therefore, the timing of operation and stop of the ultrasonic oscillator 22 can be controlled based on the detected value of the flow rate sensor 20 .

In the drainage system according to the first embodiment of the present invention and each modification of the drainage system, etc., the control processing for oscillating ultrasonic waves, for example, S1 to S4, S11 and S12, S21 to S24, S31 to S33, is performed by another modification It can be arbitrarily rearranged as a control process for oscillating ultrasonic waves such as the example. For example, the control device 24 may perform control processing combining S1 to S4 and S25 to S28.
Similarly, in the drainage system according to the first embodiment of the present invention and each modified example of the drainage system, the control processing for stopping oscillation of ultrasonic waves, for example, S5 to S8, S13 to S15, S25 to S28, S34 to S37 is , another modification, etc., can be arbitrarily rearranged as a control process for stopping the oscillation of ultrasonic waves. For example, the control device 24 may perform control processing in which S11 and S12 and S5 to S8 are combined.

Next, a fourth modification of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 28 and 29. FIG. Regarding the fourth modification of the drainage system according to the first embodiment of the present invention, only the points different from the drainage system 1 according to the first embodiment will be described, and the same parts will be denoted by the same reference numerals, and the description thereof will be omitted. The operation (action) of the fourth modified example of the drainage system according to the first embodiment of the present invention is the same as the operation (action) of the drainage system 1 according to the first embodiment, so the explanation is omitted.
FIG. 28 is an enlarged cross-sectional view showing a state in which the valve body is in an open state in the drainage body in the fourth modification of the drainage system according to the first embodiment of the present invention. FIG. 29 is an enlarged cross-sectional view showing a state in which the valve body is in a state of reducing the cross-sectional area of the flow path in the drainage body in the fourth modification of the drainage system according to the first embodiment of the present invention.

In the fourth modification, the structure of the drainage body is different from that of the drainage system of the first embodiment of the present invention. In this modified example, the drainage channel is composed of one channel. The drainage main body 408 includes a first drainage channel 12 which is a trap-shaped channel provided downstream of the inlet 10 . Since this drainage channel has an S-shape formed by the connection portion 12a, the first drainage channel ascending portion 12b, and the outlet channel 26, a sealing water is formed, and the sealing water level W2 is the first drainage channel 12 is defined at the top 12c. The drain main body 408 serves as a sealing water forming part that drains the water discharged to the sink 4, stores a part of the discharged water, and forms a normal sealing water at the sealing water level W2 therein. Function.

The drain main body 408 has a valve body 413 at the descending portion 12 d of the first drain channel 12 . The valve element 413 is electrically connected to the control device 24, and can change the opening degree of the flow path in response to a control command from the control device 24. FIG. As shown in FIG. 28, for example, by opening the valve at normal times, the opening diameter of the flow path on the outlet side can be widened and the cross-sectional area of the flow path can be set to A1, thereby enabling sufficient drainage. can. On the other hand, as shown in FIG. 29, for example, when the flow rate sensor 20 detects water discharge, the control device 24 controls the valve body 413 so as to reduce the opening area of the flow path (or close the flow path). The area is assumed to be A2, and the amount Q1 of water supplied to the drainage body 408 per unit time is made larger than the amount Q2 of water discharged to the outside from the outlet channel 26 per unit time. This raises the water level of the sealing water in the drainage channel. The first drain channel 12 and the valve body 413 raise the water level by the water discharged from the kitchen faucet device 6 to a water level of sealing water during washing which is higher than the sealing water level W2 in the first drain channel rising portion 12b. It functions as a water level raising means for raising to the maximum water level W1 set as. Further, since the flow rate sensor 20 detects the flow rate per unit time, after the water level of the sealing water rises to a predetermined water level (maximum water level W1), the controller 24 maintains the predetermined water level. The opening degree of the valve body 413 can be adjusted. The maximum water level W1 is the second water level set as the water level of sealing water during washing. The maximum water level W1 is set as a water level equal to or lower than the height of the inlet portion 10 and equal to or higher than the sealing water level W2 by adjusting the discharge flow rate. When water spouting ends, the control device 24 opens the valve body 413 again.

Next, a fifth modification of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 30 and 31. FIG. Regarding the fifth modification of the drainage system according to the first embodiment of the present invention, only the points different from the drainage system 1 according to the first embodiment will be described, and the same parts will be denoted by the same reference numerals, and description thereof will be omitted. The operation (action) of the fourth modified example of the drainage system according to the first embodiment of the present invention is the same as the operation (action) of the drainage system 1 according to the first embodiment, so the explanation is omitted.
FIG. 30 is an enlarged cross-sectional view showing a state in which the top of the drainage channel is in a low position in the drainage body in the fifth modification of the drainage system according to the first embodiment of the present invention. FIG. 31 is an enlarged cross-sectional view showing a state in which the top of the drainage channel is in a high position in the drainage body in the fifth modification of the drainage system according to the first embodiment of the present invention.

In the fifth modification, the structure of the drainage body is different from the structure of the drainage body of the drainage system according to the first embodiment of the present invention. In this modified example, the drainage channel is composed of one channel. The drainage main body 508 includes a first drainage channel 512 which is a trap-shaped channel provided downstream of the inlet portion 10 . Since this drainage channel has an S-shape composed of the connection portion 12a, the first drainage channel ascending portion 512b, and the outlet channel 26, a water seal is formed, and the seal water level W2 is the first drainage channel 512 is defined at the top 512c. The drain main body 508 serves as a sealing water forming part that drains the water discharged to the sink 4, stores a part of the discharged water, and forms a normal sealing water at the sealing water level W2 therein. Function.

The drain main body 8 includes a movable wall 515 connected to a wall that separates the first drain channel ascending portion 12b and the descending portion 12d in the first drain channel 512. As shown in FIG. The movable wall rotates so as to fall toward the outlet channel 26 with the connecting portion between the first drainage channel ascending portion 12b and the wall that partitions the outlet channel 26 as a rotation axis (trap rotating portion). The movable wall 515 constitutes the top portion 512c of the first drainage channel 512 at the highest position according to its posture. The movable wall 515 is electrically connected to the control device 24 and can change its own attitude upon receiving a control command from the control device 24 .

As shown in FIG. 30, for example, the control device 24 normally tilts the distal side of the movable wall 515 toward the outlet channel 26 side, reduces the angle of the movable wall 515 with respect to the horizontal plane, and The posture is controlled so that the side (rotating shaft side) and the distal side are approximately horizontal, or the distal side is positioned lower than the proximal side. Therefore, the position of the top portion 512c of the first drainage channel 512 is defined by the proximal side of the movable wall 515 and is set to a relatively low position. At this time, the sealing water level W2 is defined at the top portion 512c of the first drainage channel 512. As shown in FIG.
As shown in FIG. 31, on the other hand, when the flow rate sensor 20 detects water discharge, for example, the control device 24 rotates the distal end of the movable wall 515 so as to approach the first drainage channel rising portion 12b side ( By rotating the movable wall 515 so as to increase the angle with respect to the horizontal plane, the posture is controlled so that the distal side is positioned higher than the proximal side. The movable wall 515 has the function of raising the top portion 512c of the drain trap of the first drain channel 512 upward. Therefore, the position of the top portion 512c of the first drainage channel 512 is defined by the distal side of the movable wall 515 and is set to a relatively high position. As a result, the water level of the sealing water in the drainage channel can be raised above the normal sealing water level W2. Therefore, the first drainage channel 512 and the movable wall 515 are sealed by the water discharged from the kitchen faucet device 6 so that the water level is higher than the sealing water level W2 in the first drainage channel rising portion 12b during washing. It functions as a water level raising means for raising the water level to the maximum water level W1 set as the water level of . After the water level of the sealing water rises to a predetermined water level (maximum water level W1), the control device 24 controls the posture of the movable wall 515 so as to maintain the predetermined water level. When the water discharge ends, the control device 24 causes the distal side of the movable wall 515 to collapse toward the outlet channel 26 again.

Note that the above-described first to fifth modifications can be similarly applied to second to fourth embodiments described later.

According to the drainage system 1 according to the first embodiment of the present invention described above, the control device 24 receives the supply start signal from the supply start signal transmission unit, and before the water level of the seal water rises to the maximum water level W1, , the ultrasonic oscillator 22 starts to oscillate. As a result, the water level of the sealing water can be changed while the ultrasonic wave is oscillated by the ultrasonic oscillator 22, and the positions of the antinode D and the node C of the ultrasonic wave K that overlap in the sealing water can be changed. Therefore, according to the present invention, it is possible to suppress the occurrence of so-called uneven cleaning, in which the cleaning power of ultrasonic cleaning is uneven depending on the position.

Furthermore, according to the drainage system 1 according to the first embodiment of the present invention, the controller 24 causes the ultrasonic oscillator 22 to start oscillating while the seal water level is rising. As a result, it is possible to suppress the operation of the ultrasonic oscillator 22 when the water supply to the drainage body 8 ends before the water level of the seal water rises. Therefore, the water level of the seal water does not rise, and only ultrasonic cleaning is performed on a relatively low portion of the drainage body, and the durability of the ultrasonic oscillator 22 for performing such ultrasonic cleaning. can be suppressed from decreasing.

Furthermore, according to the drainage system 1 according to the first embodiment of the present invention, the control device 24 raises the water level of the sealing water, and when it reaches or exceeds the third water level at which the enlarged diameter portion is formed, the ultrasonic oscillator 22 to start the oscillation. Since the ultrasonic cleaning is performed after the water level reaches the enlarged diameter portion where it is difficult to clean the dirt of the drainage main body 8, the ultrasonic cleaning performance can be improved in the portion where the cleaning performance is lowered, and the third water level. By omitting oscillation by the ultrasonic oscillator 22 at a water level lower than W3, deterioration in durability of the ultrasonic oscillator 22 can be suppressed.

Furthermore, according to the drainage system 1 according to the first embodiment of the present invention, the control device 24 stops the oscillation by the ultrasonic oscillator 22 after the water level in the drainage main body 8 has decreased to the sealing water level W2. As a result, the ultrasonic wave can be oscillated by the ultrasonic oscillator 22 while the water level of the sealing water is fluctuated until the water level is lowered. Therefore, according to the present invention, it is possible to more reliably suppress the occurrence of so-called uneven cleaning.

Furthermore, according to the drainage system 1 according to the first embodiment of the present invention, the control device 24 causes the ultrasonic oscillator 22 to continue oscillating while the water level of the seal water is at the maximum water level W1. As a result, the control device 24 causes the ultrasonic cleaning to be continuously performed during the period when the water in the drainage main body 8 reaches the maximum water level W1, and the ultrasonic cleaning in the area where the water level of the seal water has risen to the maximum water level W1. You can improve your abilities.

Next, a drainage system according to a second embodiment of the present invention will be described with reference to FIGS. 22 and 23. FIG. The second embodiment is an example in which the drainage system according to the present invention is applied to the washing floor of a bathroom. Figure 22 is a perspective view of a bathroom with a drainage system according to a second embodiment of the invention; 23 is a partially enlarged cross-sectional view of the vicinity of the floor surface of the bathroom as viewed along line XXIII-XXIII of FIG. 22. FIG.

Since the drainage system 101 according to the second embodiment has a basic structure similar to that of the drainage system 1 according to the first embodiment described above, only differences from the first embodiment of the second embodiment of the present invention will be described. , and similar parts are denoted by the same reference numerals in the drawings, and descriptions thereof are omitted. The operation (action) of the drainage system 101 according to the second embodiment of the present invention is the same as the operation (action) of the drainage system 1 according to the first embodiment, so the explanation is omitted.

The drainage system 101 includes a washing space floor 104 as a water receiving portion provided in the bathroom 102, a bathtub 105 as a water receiving portion provided in the bathroom 102, and a bathroom faucet for discharging water (hot water) to the washing space floor 104. A washing place side faucet device (water discharge unit) 106 that is a device (bathroom faucet) and a shower faucet device (water discharge unit) 107 that is a bathroom faucet device (bathroom faucet) that spouts water (hot water) into a bathtub 105. , a bathtub-side faucet device 109 as a supply device for spouting water (hot water) to the bathtub 105, and a drain main body 108 connected to the downstream end of the bottom portion 104a of the floor 104 of the washing space. The washing place floor 104 is formed to discharge water discharged from the washing place side faucet device 106 and/or the shower faucet device 107 to the downstream side.

The washing place side faucet device 106 and the shower faucet device 107 are connected on the upstream side to a water supply channel 9 to which water is supplied from a water supply source (not shown) and to a hot water supply channel 11 to which hot water is supplied. . The washing place side faucet device 106 and the shower faucet device 107 are provided with a hot and cold water mixing faucet 6a, mix water from the cold water supply channel 9 and hot water from the hot water supply channel 11, and discharge water from water discharge parts 106b and 107b. . The water supply channel 9 and the hot water supply channel 11 are connected to the hot and cold water mixing valve 6a, and the water discharge side channel 6c extends downward from the hot and cold water mixing valve 6a, passes through the flow rate sensor 20 described later, and extends to the water discharging portions 106b and 107b. ing.

As shown in FIG. 23, the drain body 108 is provided downstream of the wash floor 104 and configured to form a water seal.
The drain main body 108 includes an inlet 110 that opens toward the floor 104 of the washing area, a first drain channel 112 that is a trap-shaped channel provided downstream of the inlet 110, and a drain from the first drain channel 112. A branched second drainage channel 114 and an intrusion suppressor 116 for suppressing the entry of dirt of a certain size into the second drainage channel 114 are provided. The inlet portion 110 and the drain body portion 108 form the drain port portion of the wash area floor 104 . The drainage main body 108 drains the water discharged onto the floor 104 of the washing place, and also stores part of the discharged water to form a water seal in the normal state at the water seal water level W2. function as The inlet portion 110 is formed by partially recessing the bottom portion 104a downward. A water supply channel other than the channel from the washing place floor 104 may be connected to the drain main body 108 . Another water supply channel may be connected to another water supply (not shown). The water supplied into the drainage body 108 includes water flowing into the drainage body 108 from a water supply channel other than the channel from the washing floor 104 .

The drainage main body 108 forms an enlarged diameter portion 108a in which the diameter of the upper side portion of the drainage channel is enlarged at the height of the third water level W3. The enlarged diameter portion 108a forms a wall surface in a portion wider in the outer peripheral direction than the lower portion of the drainage channel. Therefore, the enlarged diameter portion 108a forms a portion that makes it difficult to clean the drain body portion 108 of dirt. Ultrasonic waves traveling straight from an ultrasonic oscillator 22, which will be described later, diffract and wrap around to the diameter-enlarged portion 108a, so that the ultrasonic cleaning performance tends to decrease in the diameter-enlarged portion 108a.

The drainage system 1 further includes a flow rate sensor 20, which is a detection unit that detects water discharged from the washing area side faucet device 106 and/or the shower faucet device 107, and ultrasonic waves to the water in the drainage main body 108. an ultrasonic oscillator 22 that operates, a control device 24 that controls the operation of the ultrasonic oscillator 22 , and an outlet channel 126 that is provided downstream of the first drainage channel 12 of the drainage main body 108 .

The flow rate sensor 20 is provided between the hot and cold water mixing faucet 6a of the washing place side faucet device 106 and/or the shower faucet device 107 and the water discharge portions 106b and 107b. The flow rate sensor 20 can detect the flow rate per unit time of the water spouted from the water spouting portions 106b and 107b. The flow rate sensor 20 transmits to the control device 24 a detection signal, which is a supply start signal corresponding to the start of detection of the water flow rate, which is the start of water supply to the drainage body 108 . Therefore, the flow rate sensor 20 functions as a supply start signal transmission section that transmits a supply start signal corresponding to the start of water supply to the drainage body section 108 to the control device 24 . The supply start signal of the flow rate sensor 20 is ON while water is being supplied to the drainage body 108 .

The ultrasonic oscillator 22 is provided below the inlet portion 110 within the drainage body portion 108 . The ultrasonic oscillator 22 is provided at the bottom of the drainage main body 108 and arranged to oscillate radio waves upward.

The control device 24 can interlock the start of water discharge from the washing place side faucet device 106 and/or the shower faucet device 107 with the start of ultrasonic cleaning by the ultrasonic cleaning mode. After receiving the supply start signal from the flow rate sensor 20, the control device 24 causes the ultrasonic oscillator to start oscillating before the water level in the drainage body 108 rises to the maximum water level W1. The control device 24 causes the ultrasonic oscillator 22 to start oscillating while the water level in the drainage main body 108 is rising after the start of rising. The control device 24 causes the ultrasonic oscillator to start oscillating when the water level in the drainage main body 108 reaches a third water level W3 or higher where a portion of the drainage main body 108 that is difficult to clean is formed. The control device 24 causes the ultrasonic oscillator 22 to continue to oscillate during the period from the start of oscillation until the water level in the drainage body 108 reaches the maximum water level W1 and during the period during which the water level is at the maximum water level W1. In order to clean the drainage body 108 more reliably, the control device 24 stops the oscillation of the ultrasonic oscillator after the water level in the drainage body 108 has decreased to the sealing water level W2.

A mesh basket (not shown) is disposed in the upstream portion of the drainage body 108 . A mesh basket (not shown) is formed to cover the entire flow path below the inlet section 110 . The upper end of a mesh basket (not shown) is positioned at the inlet section 110 . A mesh basket (not shown) allows water to pass through but keeps small objects such as dust inside without allowing them to pass through.

Next, referring to FIG. 23, the first drainage channel 112 and the second drainage channel 114 of the drainage system according to the first embodiment of the present invention will be described.
The first drainage channel 112 of the drainage main body 108 of the drainage system 101 includes a connection portion 112a connected to the lower portion of the inlet portion 110 and an upward flow that rises obliquely upward toward the downstream side so as to form a drainage trap. A first drainage channel ascending portion 112b that is a path, a top portion 112c that is a folded portion between the first drainage channel ascending portion 112b and a descending portion 112d, and a descending portion 112d that descends from the top portion 112c. and The descending portion 112 d is connected to the outlet channel 126 .

The first drainage channel 112 is a trap-shaped channel that folds back from the first drainage channel ascending portion 112b toward the descending portion 112d. The descending portion 112d is connected to the downstream end of the first drainage channel ascending portion 112b and extends substantially vertically downward. Sealing water is formed as described later at the connection portion 112a, the first drainage channel rising portion 112b, and the second drainage channel 114 inside the drainage body portion 108, and the sealing water level W2, which is the first water level, is defined. . The first drainage channel 112 is configured to define a maximum water level W1 equal to or lower than the height of the inlet 110 by the top portion 112c of the trap-shaped channel. The maximum water level W1 is the second water level set as the water level of sealing water during washing. The maximum water level W1 is defined at a position higher than the bottom surface of a mesh basket (not shown), for example, at the top of the mesh basket. A maximum water level W1 may be defined above the mesh cage. Since the top portion 112c of the first drainage channel 112 is provided at the height of the inlet portion 110 of the drainage body portion 108, the maximum water level W1 defined by the first drainage channel 112 is 110 height. The first drainage channel 112 is formed to have a first channel cross-sectional area D11 capable of discharging to the outlet channel 26 a first drainage amount per unit time larger than a second drainage amount per unit time, which will be described later. . The first channel cross-sectional area D11 is the smallest channel cross-sectional area among the channel cross-sectional areas of the first drainage channel 112 .

The second drainage channel 114 is a bypass extending from an inlet portion 114a of the second drainage channel 114 provided upstream from the top portion 112c of the first drainage channel 112 to an outlet portion 114b provided downstream from the top portion 112c. Form a flow path. The second drainage channel 114 has a top portion 114c forming the highest portion between the inlet portion 14a and the outlet portion 14b, and a second drainage channel descending portion 114i extending obliquely downward toward the downstream side from the inlet portion 114a. and

An inlet portion 114 a of the second drainage channel 114 is formed on the side wall of the drainage body portion 108 . Outlet portion 114 b is connected to the side wall of outlet channel 126 .

An inlet portion 114a of the second drainage channel 114 forms a top portion 114c. The second drainage channel 114 defines the sealing water level W2 in the drainage main body 108 by the top portion 114c. In addition, the second drainage channel 114 may be configured such that the sealing water level W2 is defined by, for example, the middle portion of the second drainage channel 114 or the outlet thereof constituting the highest portion of the channel. Also, the sealing water level W2 may be defined by a configuration other than the second drainage channel 114 . The sealing water level W2 is defined below the mesh cage. The sealing water level W2 is positioned near the center of the drain main body 108 or at the lower portion. The second drainage flow path 14 further includes a narrowed portion 130 that narrows a portion of the flow path.

The second drainage channel 114 is formed in the narrowed portion 130 to have a second channel cross-sectional area D12 such that the second drainage amount can be drained to the outlet channel 26 per unit time. The second channel cross-sectional area D12 is the smallest channel cross-sectional area among the channel cross-sectional areas of the second drainage channel 114 . The second cross-sectional area D12 of the second drainage channel 114 is smaller than the first cross-sectional area D11 of the first drainage channel 112 . Therefore, the second drainage channel 114 is formed to have a greater channel resistance than the first drainage channel 112 by the constricted portion 130 . The second drainage flow path 114 is configured so that when the inflow amount of water per unit time exceeding the second drainage amount per unit time of the narrowed portion 30 of the second drainage flow path 114 flows into the drainage main body portion 108, the drainage main body It functions to raise the water level within the section 108 to at least a maximum water level W1 above the sealing water level W2 and defined by the first drainage channel 112 .

The first drainage channel 112 and the second drainage channel 114 are configured to drain water flowing into the drainage body 108 to the outlet channel 126 so that the water level in the drainage body 108 does not exceed the maximum water level W1. act as a means. At least the first drain channel 112 functions to drain water in the first drain channel 112 to the outlet channel 126 such that the water level in the drain body 108 does not exceed the maximum water level W1. When the water level in the drainage main body 108 reaches the maximum water level W1, the drainage means is the unit of water that flows out from the drainage main body 108 to the outlet flow path 126 by the first drainage flow path 112 and the second drainage flow path 114. It is formed so that the amount of drainage per hour is equal to or greater than the amount of water flowing into the drainage body 108 per unit time. The drainage means is configured to maintain the water level in the drainage body 108 at the maximum water level W1 while water is further flowing into the drainage body 108 at an inflow rate exceeding the second drainage rate.

The first drainage channel 112 and the second drainage channel 114 are configured to raise the water level of the sealing water by the water discharged from the washing place side faucet device 106 and/or the shower faucet device 107 to the first drainage channel rising portion 12b. It functions as a water level raising means for raising the water level to the maximum water level W1 set as the water level of the sealing water during washing, which is higher than the sealing water level W2, which is the first water level in the water level. At least the second drainage flow path 114 reduces the water level in the drainage main body 108 when the inflow amount of water per unit time exceeding the second drainage amount per unit time of the throttle section 130 flows into the drainage main body 108. , higher than the sealing water level W2 and at least up to the maximum water level W1.

Next, a drainage system according to a third embodiment of the present invention will be described with reference to FIGS. 24 and 25. FIG. 3rd Embodiment is an example which applied the drainage system by this invention to the bathtub of the bathroom. Figure 24 is a perspective view of a bathroom with a drainage system according to a third embodiment of the invention; 25 is a partially enlarged cross-sectional view of the vicinity of the floor surface of the bathroom as viewed along line XXV--XXV of FIG. 24. FIG.

Since the drainage system 201 according to the third embodiment has a part having substantially the same structure as the drainage system 101 according to the second embodiment described above, only the points different from the second embodiment of the third embodiment of the present invention are Similar parts are given the same reference numerals in the drawings, and the description thereof is omitted. The operation (action) of the drainage system 201 according to the third embodiment of the present invention is the same as the operation (action) of the drainage system 1 according to the first embodiment, so the explanation is omitted.

The drainage system 201 further comprises a drainage body 208 connected to the downstream end of the bottom 105 a of the bathtub 105 .

The bathtub-side faucet device 109 is connected on the upstream side to a water supply channel 9 to which water is supplied from a water supply source (not shown) and to a hot water supply channel 11 to which hot water is supplied. The bathtub-side faucet device 109 includes a hot and cold water mixing cock 6a which is a hot and cold water mixing portion, mixes water from the cold water supply passage 9 and hot water from the hot water supply passage 11 at the hot and cold water mixing cock 6a, and discharges the water to the bathtub 105. Water is discharged from the water discharging portion 206b. The water supply channel 9 and the hot water supply channel 11 are connected to the hot and cold water mixing valve 6a, and the water discharge side channel 6c extends from the hot and cold water mixing valve 6a, passes through the flow rate sensor 20, which will be described later, and extends to the water discharge portion 206b. Water discharger 206b of bathtub-side faucet device 109 and water discharger 107b of shower faucet device 107 discharge water into bathtub 105 . The bathtub-side faucet device 109 and the shower faucet device 107 each supply water to the drainage body 208 via the bathtub 105 . The bathtub 105 is formed to discharge water discharged from the bathtub-side faucet device 109 and/or the shower faucet device 107 downstream.

As shown in FIG. 25, the drain body 208 is provided downstream of the bathtub 105 and configured to form a water seal.
The drain main body 208 includes an inlet 210 that opens toward the bathtub 105, a first drain channel 212 that is a trap-shaped channel provided downstream of the inlet 210, and branches off from the first drain channel 212. and an intrusion suppressor 116 that prevents dirt of a certain size from entering the second drainage channel 114 . The inlet portion 210 and the drain body portion 208 form the drain port portion of the bathtub 105 . The drain main body 208 serves as a sealing water forming part that drains the water discharged into the bathtub 105, stores a part of the discharged water, and forms a normal sealing water at the sealing water level W2. Function. The inlet portion 210 is formed by partially recessing the bottom portion 105a below the bottom surface. A water supply channel other than the channel from the bathtub 105 may be connected to the drainage body 208 . Another water supply channel is connected to another water supply (not shown). The water that flows into the drainage body 208 includes water that flows into the drainage body 208 from a water supply channel other than the channel from the bathtub 105 .

The drainage main body 208 forms an enlarged diameter portion 208a in which the upper portion of the drainage channel is enlarged in the vicinity of the height of the third water level W3. The enlarged diameter portion 208a forms a wall surface in a portion wider in the outer peripheral direction than the lower portion of the drainage channel. Therefore, the enlarged diameter portion 208a forms a portion that makes it difficult to clean the drain main body portion 208 of dirt. Ultrasonic waves traveling straight from an ultrasonic oscillator 222, which will be described later, diffract and wrap around to the enlarged diameter portion 208a, so that the performance of ultrasonic cleaning tends to decrease in the enlarged diameter portion 208a.

The drainage system 201 further includes a flow rate sensor 20, which is a detection unit for detecting water spouted from the bathtub-side faucet device 109 and/or the shower faucet device 107, and an ultrasonic wave to the water in the drainage body 208. an ultrasonic oscillator 222 for controlling the operation of the ultrasonic oscillator 222;

The flow rate sensor 20 is provided between the hot and cold water mixing faucet 6a of the bathtub-side faucet device 109 and/or the shower faucet device 107 and the water discharge portions 206b and 107b. The flow rate sensor 20 can detect the flow rate per unit time of water spouted from the water spouting portions 206b and 107b. The flow rate sensor 20 transmits to the control device 24 a detection signal, which is a supply start signal corresponding to the start of detection of the water flow rate, which is the start of water supply to the drainage body 208 . Therefore, the flow rate sensor 20 functions as a supply start signal transmission section that transmits a supply start signal corresponding to the start of water supply to the drainage body section 208 to the control device 24 . The supply start signal of the flow rate sensor 20 is in the ON state while water is being supplied to the drainage body 208 .

After receiving the supply start signal from the flow rate sensor 20, the control device 24 causes the ultrasonic oscillator to start oscillating before the water level in the drainage body 208 rises to the maximum water level W1. The control device 24 causes the ultrasonic oscillator 22 to start oscillating while the water level in the drainage main body 208 is rising after the start of rising. The control device 24 causes the ultrasonic oscillator to start oscillating when the water level in the drainage main body 208 reaches or exceeds the third water level W3 at which a portion of the drainage main body 208 that is difficult to clean is formed. The control device 24 causes the ultrasonic oscillator 22 to continue to oscillate during the period from the start of oscillation until the water level in the drainage body 208 reaches the maximum water level W1 and during the period during which the water level is at the maximum water level W1. In order to clean the drainage body 208 more reliably, the control device 24 stops the ultrasonic oscillator from oscillating after the water level in the drainage body 208 drops to the sealing water level W2.

The ultrasonic oscillator 222 is provided below the inlet portion 210 within the drainage body portion 208 . The ultrasonic oscillator 222 is provided at the bottom of the drainage main body 208 and arranged to oscillate radio waves upward.

A mesh basket (not shown) is located in the upstream portion of the drainage body 208 . A mesh basket (not shown) is formed to cover the entire flow path below the inlet section 210 .

Next, referring to FIG. 25, the first drainage channel 212 and the second drainage channel 114 of the drainage system according to the first embodiment of the present invention will be described.
The first drainage channel 212 of the drainage main body 208 of the drainage system 201 includes a connection portion 212a connected to the lower portion of the inlet portion 210 and an upward flow that rises obliquely upward toward the downstream side so as to form a drainage trap. A first drainage channel ascending portion 212b that is a path, a top portion 212c that is a folded portion between the first drainage channel ascending portion 212b and a descending portion 212d, and a descending portion 212d that descends from the top portion 212c. and The descending portion 212 d is connected to the outlet channel 126 .

The first drainage channel 212 is a trap-shaped channel that folds back from the first drainage channel ascending portion 212b toward the descending portion 212d. The descending portion 212d is connected to the downstream end of the first drainage channel ascending portion 212b and extends substantially vertically downward. Sealing water is formed at the connecting portion 212a, the first drain channel rising portion 212b, and the second drain channel 114 inside the drain body portion 208, and the seal water level W2 is defined. Further, the first drainage channel 212 is configured to define a maximum water level W1 equal to or lower than the height of the inlet portion 210 by the top portion 212c of the trap-shaped channel. The maximum water level W1 is defined at a position higher than the bottom surface of a mesh basket (not shown), for example, at the top of the mesh basket. A maximum water level W1 may be defined above the mesh cage. By providing the top portion 212c of the first drainage channel 212 at the height of the inlet portion 210 of the drainage body portion 208, the maximum water level W1 defined by the first drainage channel 212 is set at the inlet portion of the drainage body portion 208. 210 height. The first drainage channel 212 is formed to have a first channel cross-sectional area D11 capable of discharging to the outlet channel 126 a first drainage amount per unit time that is larger than a second drainage amount per unit time, which will be described later. . The first channel cross-sectional area D11 is the smallest channel cross-sectional area among the channel cross-sectional areas of the first drainage channel 212 .

The inlet portion 114a of the second drainage channel 114 is formed in the side wall of the drainage body portion 208 (drainage body portion 108). Outlet portion 114 b is connected to the side wall of outlet channel 126 .

An inlet portion 114a of the second drainage channel 114 forms a top portion 114c. The second drainage channel 114 defines the sealing water level W2 in the drainage main body 208 by the top portion 114c. In addition, the second drainage channel 114 may be configured such that the sealing water level W2 is defined by, for example, the middle portion of the second drainage channel 114 or the outlet thereof constituting the highest portion of the channel. Also, the sealing water level W2 may be defined by a configuration other than the second drainage channel 114 . The sealing water level W2 is defined below the mesh cage. The sealing water level W2 is positioned near the center of the drain main body 208 or at the lower portion.

The first drainage channel 212 and the second drainage channel 114 are configured to drain water flowing into the drainage body 208 to the outlet channel 126 so that the water level in the drainage body 208 does not exceed the maximum water level W1. act as a means. At least the first drain channel 212 functions to drain water in the first drain channel 212 to the outlet channel 126 such that the water level in the drain body 208 does not exceed the maximum water level W1. When the water level in the drainage main body portion 108 reaches the maximum water level W1, the drainage means is a unit of water flowing out from the drainage main body portion 208 to the outlet flow channel 126 by the first drainage flow path 212 and the second drainage flow path 114. It is formed so that the amount of drainage per hour is equal to or greater than the amount of water flowing into the drainage body 208 per unit time. The drainage means is configured to maintain the water level in the drainage body 208 at the maximum water level W1 while water is further flowing into the drainage body 208 at an inflow rate exceeding the second drainage rate.

In the first drainage channel 212 and the second drainage channel 114, water discharged from the bathtub-side faucet device 109 and/or the shower faucet device 107 raises the water level of the sealing water higher than the sealing water level W2 during washing. It functions as a water level raising means for raising to the maximum water level W1 set as the water level of the seal water. At least the second drainage channel 114 reduces the water level in the drainage main body 208 when the amount of water flowing into the drainage main body 208 per unit time exceeds the second drainage amount per unit time of the restrictor 130. , higher than the sealing water level W2 and at least up to the maximum water level W1.

Next, a drainage system according to a fourth embodiment of the present invention will be described with reference to FIGS. 26 and 27. FIG. 4th Embodiment is the example which applied the drainage system by this invention to the washbowl of the faucet apparatus for a washbasin. FIG. 26 is a perspective view of a wash basin faucet device equipped with a drainage system according to a fourth embodiment of the present invention. 27 is a partially enlarged cross-sectional view of the vicinity of the floor surface of the washbowl of the washbasin faucet device as viewed along line XXVII-XXVII of FIG. 26. FIG. In addition, in FIG. 27, for the sake of explanation of the internal structure, the internal structure of the flow path, which is not shown in the cross section of the drainage body, is schematically illustrated by imaginary lines.

Since the drainage system 301 according to the fourth embodiment has a basic structure similar to that of the drainage system 1 according to the first embodiment described above, only the differences from the first embodiment will be described for the fourth embodiment of the present invention. , and similar parts are denoted by the same reference numerals in the drawings, and descriptions thereof are omitted. The operation (action) of the drainage system 301 according to the fourth embodiment of the present invention is the same as the operation (action) of the drainage system 1 according to the first embodiment, so the explanation is omitted.

The drainage system 301 includes a washbowl 304 that is a water receiving portion provided in the washstand 302 , a washbasin faucet device (water discharge portion) 306 that is a washbasin faucet that spouts water to the washbowl 304 , and the washbowl 304 . and a drainage body 308 connected to the downstream end of the bottom 304a of the. The washbowl 304 is not limited to a washstand bowl, and includes a washbowl of a size that enables handwashing.

The washbasin faucet device 306 is connected on the upstream side to a water supply channel 9 to which water is supplied from a water supply source (not shown) and to a hot water supply channel 11 to which hot water is supplied. The washbasin faucet device 306 includes a hot and cold water mixing faucet 6a, mixes water from the cold water supply channel 9 and hot water from the hot water supply channel 11, and discharges water from a water discharge portion 306b. The water supply channel 9 and the hot water supply channel 11 are connected to the hot and cold water mixing valve 6a, and the water discharge side channel 6c extends from the hot and cold water mixing valve 6a to the water discharging portion 306b through the flow rate sensor 20, which will be described later. Washbowl 304 is formed to discharge water spouted from washbasin faucet device 306 to the downstream side.

Next, with reference to FIG. 26, the drainage body of the drainage system according to the fourth embodiment of the present invention will be described.
The drain body 308 includes an inlet 310 that opens toward the washbowl 304, a first drain channel 312 that is a trap-shaped channel provided downstream of the inlet 310, and a drain from the first drain channel 312. and a branched second drainage channel 314 . Inlet portion 310 and drain body portion 308 form the drain portion of basin 304 . The drain main body 308 drains the water discharged to the washbowl 304, stores a part of the discharged water, and forms a normal water seal at the seal water level W2 therein. function as The inlet portion 310 is formed by partially recessing the bottom portion 304a below the bottom surface. A water supply channel other than the channel from the sink 4 may be connected to the drain main body 308 . Another water supply channel is connected to another water supply (not shown). The water flowing into the drain body 308 includes water flowing into the drain body 308 from a water supply channel other than the water channel from the washbowl 304 . The water that flows into the drainage body 308 also includes water containing any of detergent, shampoo, body soap, stains on tableware, stains on the water receiving part, etc., such as domestic wastewater.

The drainage system 301 further includes a flow rate sensor 20 which is a detection unit for detecting water spouted from the washbasin faucet device 306, an ultrasonic oscillator 22 which oscillates the water in the drainage body 308, and an ultrasonic wave. A controller 24 for controlling the operation of the oscillator 22 and an outlet channel 326 provided downstream of the first drain channel 312 of the drain body 308 are provided.

The flow rate sensor 20 is provided between the hot and cold water mixer tap 6a of the washbasin faucet device 306 and the water discharger 306b. The flow rate sensor 20 can detect the flow rate per unit time of water spouted from the water spouting portion 306b of the washbasin faucet device 306 .

The ultrasonic oscillator 22 is provided below the inlet portion 310 within the drainage body portion 308 . The ultrasonic oscillator 22 is provided at the bottom of the drainage main body 308 and arranged so as to oscillate radio waves upward.

A mesh basket (not shown) is located in the upstream portion of the drainage body 308 . A mesh basket (not shown) is formed to cover the entire flow path below the inlet section 310 .

The control device 24 can link the start of water spouting from the washbasin faucet device 306 with the start of ultrasonic cleaning in the ultrasonic cleaning mode. After receiving the supply start signal from the flow rate sensor 20, the control device 24 causes the ultrasonic oscillator to start oscillating before the water level in the drainage body 308 rises to the maximum water level W1. The control device 24 causes the ultrasonic oscillator 22 to start oscillating while the water level in the drainage main body 308 is rising after the start of rising. The control device 24 causes the ultrasonic oscillator to start oscillating when the water level in the drainage main body 308 becomes equal to or higher than the third water level W3 at which a portion where dirt on the drainage main body 308 is difficult to wash is formed. The control device 24 causes the ultrasonic oscillator 22 to continue to oscillate during the period from the start of oscillation until the water level in the drainage body 308 reaches the maximum water level W1 and during the period during which the water level is at the maximum water level W1. In order to clean the drainage main body 308 more reliably, the control device 24 stops the oscillation of the ultrasonic oscillator after the water level in the drainage main body 308 drops to the sealing water level W2.

The outlet channel 326 is connected to the downstream end of the first drainage channel 312 and extends downward in the vertical direction. Outlet channel 326 is further connected to a downstream drain pipe (not shown). Outlet channel 326 may be formed in part by drain body 308 .

Next, the first drainage channel 312 and the second drainage channel 314 of the drainage system according to the first embodiment of the present invention will be described with reference to FIGS. 26 and 27. FIG.
The first drainage channel 312 of the drainage main body 308 of the drainage system 301 includes a connection portion 312a connected to the lower part of the inlet portion 310 and an upward flow that rises obliquely upward toward the downstream side so as to form a drainage trap. a first drainage channel ascending portion 312b that is a channel, and a top portion 312c that is a folded portion that connects with the first drainage channel ascending portion 312b of the drain trap between the first drainage channel ascending portion 312b and the descending portion 312d. , and a descending portion 312d, which is a descending passage descending from the top portion 12c. The descending portion 312 d is connected to the outlet channel 326 .

The first drainage channel 312 is a trap-shaped channel that folds back from the first drainage channel ascending portion 312b toward the descending portion 312d. The descending portion 312d is connected to the downstream end of the first drainage channel ascending portion 312b and extends substantially vertically downward. Sealing water is formed as will be described later at the connecting portion 312a, the first drainage channel ascending portion 312b, and the second drainage channel 314 inside the drainage body portion 308, and the sealing water level W2, which is the first water level, is defined. . Further, the first drainage channel 312 is configured to define a maximum water level W1 equal to or lower than the height of the inlet portion 310 by the top portion 312c of the trap-shaped channel. The maximum water level W1 is the second water level set as the water level of sealing water during washing. The maximum water level W1 is defined at a position higher than the bottom surface of the mesh basket (not shown), for example, the top of the mesh basket (not shown). A maximum water level W1 may be defined above the mesh basket (not shown). Since the top portion 312c of the first drainage channel 312 is provided at the height of the inlet portion 310 of the drainage body portion 308, the maximum water level W1 defined by the first drainage channel 312 is 310 height. The first drainage channel 312 is formed to have a first channel cross-sectional area D1 such that a first drainage volume per unit time larger than a second drainage volume per unit time, which will be described later, can be discharged to the outlet channel 326. . The first channel cross-sectional area D1 is the smallest channel cross-sectional area among the channel cross-sectional areas of the first drainage channel 312 .

The second drainage channel 314 is a bypass channel extending from the inlet portion 310a of the second drainage channel 314 provided upstream from the top portion 312c of the first drainage channel 312 to the outlet portion 314b forming the top portion 314c. to form The second drainage channel 314 includes a second drainage channel rising portion 314h that rises obliquely upward from the inlet portion 310a toward the downstream side, and a top portion that forms the highest portion between the inlet portion 310a and the outlet portion 314b. 314c.

The inlet portion 310 a of the second drainage channel 314 is connected to the lower surface of the first drainage channel ascending portion 312 b of the first drainage channel 312 . Outlet portion 314 b is connected to the side wall of outlet channel 326 .

The second drainage channel 314 defines the sealing water level W2 in the drainage main body 308 by the top portion 314c. In addition, the second drainage channel 314 may be configured so as to define the sealing water level W2 by, for example, forming the highest part of the channel with the middle portion or the inlet of the second drainage channel 314 . Also, the sealing water level W2 may be defined by a configuration other than the second drainage channel 314 . The sealing water level W2 is defined below the net cage (not shown). The sealing water level W2 is positioned near the center or lower part of the first drainage channel ascending portion 312b, and is positioned near the center or lower part of the drainage body portion 308. As shown in FIG.

The second drainage channel 314 further includes a narrowed portion 330 that narrows a portion of the channel. The constricted portion 330 is formed by the minimum channel diameter of the second drainage channel 314 .

As shown in FIG. 27, the channel cross section of the inlet portion 310a of the second drainage channel 314 is formed in a circular tubular shape. The second drainage channel 314 is formed in the narrowed portion 330 to have a second channel cross-sectional area D2 such that the second drainage amount can be discharged to the outlet channel 326 per unit time. The second flow channel cross-sectional area D2 is the minimum flow channel cross-sectional area among the flow channel cross-sectional areas of the second drainage flow channel 314 . The second cross-sectional area D2 of the second drainage channel 314 is smaller than the first cross-sectional area D1 of the first drainage channel 312 . Therefore, the second drainage channel 314 is formed to have a greater channel resistance than the first drainage channel 312 due to the constricted portion 30 . The second drainage flow path 314 is configured so that when the inflow amount of water per unit time exceeds the second drainage amount per unit time of the narrowed portion 330 of the second drainage flow path 314 , the drainage body portion 308 flows into the drainage body portion 308 . It functions to raise the water level within the section 308 to at least the maximum water level W1 above the sealing water level W2 and defined by the first drainage channel 12 .

The first drainage channel 312 and the second drainage channel 314 are configured to drain water flowing into the drainage body 308 to the outlet channel 326 so that the water level in the drainage body 308 does not exceed the maximum water level W1. act as a means. At least the first drain channel 312 functions to drain water in the first drain channel 312 to the outlet channel 326 such that the water level in the drain body 308 does not exceed the maximum water level W1. When the water level in the drainage main body portion 308 reaches the maximum water level W1, the drainage means is a unit of water flowing out from the drainage main body portion 308 to the outlet flow channel 326 by the first drainage flow path 312 and the second drainage flow path 314. It is formed such that the amount of drainage per hour is equal to or greater than the amount of water flowing into the drainage body 308 per unit time. The drainage means is configured to maintain the water level in the drainage body 308 at the maximum water level W1 while water is further flowing into the drainage body 308 at an inflow rate exceeding the second drainage rate.

The first drainage flow path 312 and the second drainage flow path 314 are washed with the water discharged from the wash basin faucet device 306 so that the sealing water level is higher than the sealing water level W2 in the first drainage flow path rising portion 312b. It functions as a water level raising means for raising the water level to the maximum water level W1 set as the water level of the sealing water at that time. At least the second drainage channel 314 reduces the water level in the drainage main body 308 when the amount of water flowing into the drainage main body 308 per unit time exceeds the second drainage amount per unit time of the restrictor 330. , higher than the sealing water level W2 and at least up to the maximum water level W1.

1 Drainage system 4 Sink 8 Drainage body 12 First drainage channel 14 Second drainage channel 20 Flow rate sensor 22 Ultrasonic oscillator 24 Control device 36 Supply start signal transmitter 101 Drainage system 104 Washing place floor 105 Bathtub 106 Washing place side faucet Device 106b Water discharger 107 Shower faucet device 107b Water discharger 108 Drainage body 109 Bathtub side faucet device 112 First drainage channel 114 Second drainage channel 201 Drainage system 206b Water discharger 208 Drainage body 212 First drainage channel 222 Ultrasonic oscillator 301 Drainage system 302 Bathroom vanity 304 Washbowl 306 Washwater faucet device 306b Water discharger 308 Drainage main body 312 First drainage channel 314 Second drainage channel C Node D K ultrasonic wave S Water surface W1 Maximum Water level W2 Sealing water level W3 Third water level

Claims (5)

A drainage system for draining water,
It is connected to the downstream end of the water receiving part, drains the water discharged to the water receiving part, stores a part of the discharged water, forms a normal water seal at the first water level, and the flow a drainage body that does not close the passage ;
The water level of the sealing water is set to the above level by increasing the amount of water flowing into the drainage body from the water receiving section per unit time than the amount of water discharged from the drainage body per unit time. a water level raising means for raising the water level to a second water level set as the water level of sealing water during washing, which is higher than the first water level;
an ultrasonic oscillator that oscillates ultrasonic waves in the sealing water;
a control device for controlling oscillation of the ultrasonic oscillator;
A supply start signal transmission unit that detects water spouting to the water receiving part and, when the water spouting is detected , sends a supply start signal corresponding to the start of water supply to the drainage body to the control device. and
After receiving the supply start signal from the supply start signal transmission unit, the control device causes the ultrasonic oscillator to start oscillating before the water level in the drainage main unit rises to the second water level. A drainage system characterized by: 2. The drainage system according to claim 1, wherein the control device causes the ultrasonic oscillator to start oscillating while the seal water level is rising. Further, at a portion where the water receiving portion and the drainage body portion are connected, a diameter-enlarging portion is provided in which a flow path diameter increases from the drainage body portion to the water receiving portion,
3. The drainage system according to claim 1, wherein said control device causes said ultrasonic oscillator to start oscillating when the water level of said sealing water is equal to or higher than the third water level at which said enlarged diameter portion is formed. 4. The drainage system according to any one of claims 1 to 3, wherein the control device stops oscillation by the ultrasonic oscillator after the water level of the seal water has decreased to the first water level. 5. The drainage system according to any one of claims 1 to 4, wherein the control device causes the ultrasonic oscillator to continue to oscillate while the seal water level is at the second water level.

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