JP7344447B2 - drainage device - Google Patents

Description

The present invention relates to a drainage device, and more particularly to a drainage device provided below a water receiver.

DESCRIPTION OF RELATED ART Conventionally, as shown in patent document 1, the drainage device provided in the bottom of a sink and equipped with an ultrasonic transmitter is known. In such a drainage device, an ultrasonic transmitter irradiates ultrasonic waves to perform ultrasonic cleaning on the drainage section to remove dirt from the drainage section.

Japanese Patent Application Publication No. 2004-324108

However, in ultrasonic cleaning using a drainage device as shown in Patent Document 1, there is little visual or auditory change during cleaning. Therefore, there has been a problem in that it is difficult or impossible for the user to recognize whether the ultrasonic oscillator is actually operating or whether it is being properly cleaned.
Moreover, the drainage device is a device in which it is difficult for the user to focus his/her attention when using the water receptacle. Therefore, there is a problem in that it is difficult for the user to notice whether the ultrasonic oscillator in the drainage device is performing ultrasonic cleaning.

Here, in a drainage device as shown in Patent Document 1, a user turns on a switch on an operating section to perform ultrasonic cleaning. Therefore, in such a drainage device, unless the user turns on and operates the operating section, ultrasonic cleaning will not be performed, which poses the problem of placing a burden on the user every time he or she attempts ultrasonic cleaning. there were.
In order to solve such problems, the inventor of the present invention considered performing ultrasonic cleaning in conjunction with the inflow of water into the water seal forming section. However, in this case, ultrasonic cleaning is automatically performed without the user intentionally operating the operating unit. Therefore, there is a problem in that it becomes more difficult for the user to notice whether the ultrasonic oscillator in the drainage device is performing ultrasonic cleaning.

Therefore, the present invention has been made in order to solve the problems of the prior art described above, and the irradiation of the ultrasonic oscillator is performed in the automatic cleaning mode, so that the irradiation of the ultrasonic oscillator can be visually and visually controlled by the user. It is an object of the control device to provide a drainage device that can notify the user of the irradiation of the ultrasonic oscillator using the notification mode, even if it is difficult to confirm directly audibly.

In order to solve the above-mentioned problems, the present invention provides a drainage device provided below a water receiving part, which is provided on the downstream side of the water receiving part, has a flow path formed therein, and has a water discharge device disposed below the water receiving part. a water seal forming part that forms a water seal; a detection part that detects the supply of water to the water seal forming part or the outflow of water from the water seal forming part; and an ultrasonic wave applied to the water in the water seal forming part. An ultrasonic oscillator that emits ultrasonic waves, a control device that controls the ultrasonic irradiation by the ultrasonic oscillator, and a notification device that notifies the ultrasonic irradiation by the ultrasonic oscillator, and the control device is configured such that the detection unit An automatic cleaning mode in which the ultrasonic oscillator irradiates when water is supplied to the water seal forming part or water flows out from the water seal forming part, and the detection part irradiates the water seal forming part to the water seal forming part. and a notification mode in which the notification device makes a notification when the supply of water or the outflow of water from the water seal forming part is detected, or when the ultrasonic oscillator executes ultrasonic irradiation. It is said that
In the present invention configured in this way, the control device starts irradiation with the ultrasonic oscillator when the detection section detects the supply of water to the water seal formation section or the outflow of water from the water seal formation section. Since the automatic cleaning mode is provided, it is possible to eliminate the burden on the user to operate the ultrasonic oscillator to start irradiation according to the supply of water to the water seal forming section. In this way, the irradiation of the ultrasonic oscillator is performed in the automatic cleaning mode in which the user does not perform any operation to start irradiation of the ultrasonic oscillator, and the irradiation of the ultrasonic oscillator is directly confirmed by the user both visually and audibly. Even if it is difficult to do so, the control device can notify the user about the irradiation from the ultrasonic oscillator using the notification mode.

In one embodiment of the present invention, the notification device is preferably provided in and around a drainage system unit that includes the drainage device.
In the present invention configured as described above, since the irradiation of the ultrasonic oscillator is started in response to the supply of water to the water seal forming section, etc., the user can operate the system in and around the drainage system unit equipped with the drainage device. There is a high possibility that irradiation with an ultrasonic oscillator will be performed during work, such as work using water in the kitchen, work using water in the bathroom, work using water in the washroom, etc. On the other hand, the notification device is provided in and around the drainage system unit that includes the drainage device. Thereby, while the user is working in and around the drainage system unit, the notification device can notify the user that the ultrasonic oscillator is irradiating the user. Therefore, the notification device can timely notify the user that the ultrasonic oscillator is irradiating the user at a relatively quick timing.

In one embodiment of the present invention, preferably, the notification device includes a light emitting unit that visually reports the irradiation of the ultrasonic oscillator.
In the present invention configured in this way, since the notification device is provided with a light emitting section that provides visual notification, the user can receive notification using the notification device rather than if the notification device is provided with a notification section that provides auditory notification. It is possible to suppress the fear of feeling bothersome.
For example, when water is frequently supplied to the water seal forming part and notifications are made frequently, a notification device that provides visual notification is better than a notification device that includes a notification unit that provides auditory notification. The notification device can further reduce the possibility that the user will find the notification bothersome.

In one embodiment of the present invention, preferably, the light emitting section of the notification device is provided so as to illuminate the inside of the water seal forming section with light.
In the present invention configured in this manner, the light emitting section of the notification device is provided so as to illuminate the inside of the water seal forming section, so the light emitting section of the notifying device can make the inside of the water seal forming section easier to see. Therefore, not only can the user be informed that ultrasonic cleaning is being performed, but also the user can easily confirm the cleaning effect of the ultrasonic cleaning inside the water seal forming part.

In one embodiment of the present invention, preferably, the light emitting section of the notification device is attached to the water seal forming section.
In the present invention configured in this manner, the light emitting section of the notification device is attached to the water seal forming section. This allows a part of the user's body, such as a part of the user's body when the user is in a position to look into the water seal forming part, or other light shielding, to be sealed. Even if the light emitting section is located above the entrance of the water seal forming section, the light emitting section can directly illuminate the inside of the water seal forming section, making the inside of the water seal forming section bright and easy to see.

In one embodiment of the present invention, preferably, the lid further includes a lid formed to cover the upper part of the entrance of the water seal forming part and provided removably; The illuminance of light measured in the area inside the water receiver near the inlet when the lid is attached to the water receptacle, the lighting in the room in which the drainage device is installed is turned off, and the light emitting section is emitting light is the same as that of the seal. Measured in the area inside the water receiving part near the inlet when the lid is attached above the inlet of the water forming part and the lights in the room where the drainage device is installed are turned on and the light emitting part is not emitting light. The light emitting section, the lid, or the water seal forming section are configured so that the illuminance is equal to or less than the illuminance of the light.
In the present invention configured in this way, when the light emitting part of the notification device emits light, the illuminance of the light leaking into the area inside the water receiving part near the inlet is such that the illuminance of the light in the room where the drainage device is installed is turned on. The illuminance of the light is equal to or lower than the illuminance of the light measured in the area inside the water receiving part near the inlet in the state in which the light emitting part is not emitting light and the light emitting part is not emitting light.
As a result, when the light from the light emitting part leaks from the inlet, the light from the light emitting part is mainly visible to the user under the light of indoor lighting lights, etc., and the light from the light emitting part is used. It becomes difficult for people to recognize them independently. Therefore, even if water is frequently supplied to the water seal forming section and notifications are issued frequently, it is possible to reduce the possibility that the notifications will cause trouble to the user.

In one embodiment of the present invention, preferably, the light emitting part of the notification means is arranged outside the flow path of the water seal forming part, and is located in a part of the water seal forming part inside the light emitting part. The channel walls are formed to transmit light.
In the present invention configured in this way, the light emitting section of the notification means is arranged outside the flow path of the water seal forming section, and the light emitting section is arranged on the inner side of the light emitting section through the flow path wall. Can illuminate the flow path. This makes it possible to place the light emitting part outside the water seal forming part and illuminate the inside of the water seal forming part with the light emitting part, without having to make a hole to attach the light emitting part to the wall of the water seal forming part. can. Therefore, it is possible to eliminate concerns about water leakage caused by making a hole for attaching the light emitting section to the wall of the channel of the water seal forming section.

In one embodiment of the present invention, preferably, in the notification mode of the control device, the notification device provides notification from at least one second after the start of irradiation by the ultrasonic oscillator until the end of irradiation.
In the present invention configured in this way, the dirt in the water seal forming part becomes smaller as the end of irradiation by the ultrasonic oscillator approaches, compared to the dirt in the water seal forming part at the start of irradiation by the ultrasonic oscillator. By providing notification by the notification device until the end of irradiation with the ultrasonic oscillator, it is possible to easily confirm that the dirt inside the water seal forming section is cleaned and the inside of the water seal forming section is clean.

According to the drainage device of the present invention, even if the ultrasonic oscillator irradiation is performed in the automatic cleaning mode and the user is difficult to directly confirm the ultrasonic oscillator irradiation visually or audibly, The control device can notify the user about the irradiation of the ultrasonic oscillator using the notification mode.

1 is a front view of a drainage system including a drainage device according to a first embodiment of the present invention; FIG. 1 is a side view of a drainage system including a drainage device according to a first embodiment of the present invention; FIG. FIG. 2 is an exploded perspective view of the drain device according to the first embodiment of the present invention attached to the sink, as seen from diagonally above the sink, with the lid and mesh basket removed from the water seal forming section. 2 is a sectional view taken along line IV-IV in FIG. 1. FIG. 3 is a sectional view taken along line VV in FIG. 2. FIG. FIG. 5 is an enlarged sectional view showing the vicinity of the water seal forming portion in FIG. 4; FIG. 1 is a block diagram schematically showing the structure of a drainage system including a drainage device according to a first embodiment of the present invention. FIG. 3 is a diagram showing a light emitting state of the notification device of the drainage device according to the first embodiment of the present invention, with the lid and the mesh basket removed. FIG. 3 is a diagram showing a light emitting state of the notification device of the drainage device according to the first embodiment of the present invention, with a lid and a mesh basket attached. FIG. 7 is a diagram showing a state in which the notification device of the drainage device according to the first embodiment of the present invention does not emit light as a comparative example, with a lid and a mesh basket attached. It is a flowchart which shows the control content of the drainage device by 1st Embodiment of this invention. 12 is a flowchart illustrating control contents that are a continuation of the flowchart in FIG. 11. It is a figure which shows the timing of the notification by the notification mode of the control device in the drainage apparatus by 1st Embodiment of this invention. 1 is a perspective view of a bathroom equipped with a drainage system equipped with a drainage device according to a second embodiment of the invention; FIG. 15 is a partially enlarged cross-sectional view of a portion near the floor surface of the bathroom taken along line XV-XV in FIG. 14. FIG. FIG. 3 is a perspective view of a drainage system including a drainage device according to a third embodiment of the present invention. 17 is a partially enlarged sectional view taken along line XVII-XVII in FIG. 16. FIG.

EMBODIMENT OF THE INVENTION Below, embodiment of this invention disclosed in this specification will be described in detail using 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 changes may be made in the structural and/or functional details thereof without departing from the spirit of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drainage system including a drainage device according to a first embodiment of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a front view of a drainage system equipped with a drainage device according to a first embodiment of the present invention, and FIG. 2 is a side view of a drainage system equipped with a drainage device according to a first embodiment of the present invention. FIG.
As shown in FIGS. 1 and 2, a drainage system 2, which is a drainage system unit including a drainage device 1 according to a first embodiment of the present invention, is installed in a kitchen. The drainage system 2 is a system that performs ultrasonic cleaning.

The drainage system 2 includes a sink 4 which is a water receiving part that receives water, a kitchen faucet device 6 which is a spouting part which discharges water or hot water into the sink 4, and a drainage device provided below the bottom part 4a of the sink 4. 1 and a drainage channel 8 provided on the downstream side of the drainage device 1.

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 includes a hot water mixer 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 spouting portion 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 faucet 6a, and the water discharge side flow channel 6c extends downward from the hot and cold water mixing faucet 6a, passes through a flow rate sensor 24 to be described later, and is connected to the hot and cold water mixing faucet 6a. It rises again and extends to 6b. The kitchen faucet device 6 further includes an operation lever 6d that is a manual operation section that starts supplying water to the water seal forming section 10 in response to an operation input by the user.

The drainage channel 8 is connected to the downstream end of the drainage device 1 and extends vertically downward. The drainage channel 8 is further connected to a drainage pipe (not shown) on the downstream side.

Next, a drainage device according to a first embodiment of the present invention will be described with reference to FIGS. 3 to 7.
FIG. 3 is an exploded perspective view of the drain device according to the first embodiment of the present invention attached to the sink, as seen from diagonally above the sink, with the lid and mesh basket removed from the water seal forming part; 4 is a sectional view taken along line IV-IV in FIG. 1, FIG. 5 is a sectional view taken along line V-V in FIG. 2, and FIG. 6 is a sectional view taken along line V-V in FIG. 4. FIG. 7 is an enlarged sectional view showing the vicinity, and FIG. 7 is a block diagram schematically showing the structure of a drainage system equipped with a drainage device according to the first embodiment of the present invention.

The water seal forming part 10 is connected to the bottom part 4a. First, the drainage device 1 includes a water seal forming part 10 provided downstream of the bottom 4a of the sink 4. The water seal forming section 10 has a flow path formed therein. A part of the water seal forming part 10 is formed by a cylindrical hollow part 4b depressed downward from the bottom part 4a. Note that the water seal forming portion 10 may be connected to the bottom portion 4a without using the recessed portion 4b. Note that a water supply flow path different from the flow path from the sink 4 may be connected to the water seal forming section 10. This further water supply channel is connected to another water supply source (not shown) or to the same water supply source. The water flowing into the water seal forming section 10 also includes water flowing into the water seal forming section 10 from a water supply flow path that is different from the flow path from the sink 4. Further, the water flowing into the water seal forming section 10 includes water that contains any of detergents, shampoos, body soaps, stains on dishes, stains on the water receiver, etc., such as domestic wastewater.

The water seal forming part 10 is provided on the lower side of the sink 4, and includes a net basket storage part 12 which is a hollow part in which a net basket is placed, a descending flow path 14 that descends on the inlet side, and a descending flow path 14. It has an ascending channel 16 that rises diagonally upward from the lower end of the rising channel 16, and an outlet channel 18 that descends from the upper end of the ascending channel 16. The water seal forming section 10 forms a water seal in the flow path by a downward flow path 14, an upward flow path 16, and an outlet flow path 18. The water seal forming unit 10 has a function of draining water discharged into the sink 4, and storing a portion of the water that has flowed in, to form a normal water seal therein at a water seal water level W0. The seal water level W0 is defined by the top portion 17 that forms a folded portion between the ascending flow path 16 and the outlet flow path 18. The outlet flow path 18 extends substantially vertically downward and is connected to the drainage flow path 8 . The water seal forming section 10 is made of resin. The water flowing into the seal forming part 10 causes the water level in the seal forming part 10 to change from the seal water level W0 in the seal forming part 10 to the seal water level W0 in the water seal forming part 10 in the top part 17. A water level adjusting section 19 is formed so that the water level can easily rise up to a high maximum water level (ultrasonic cleaning water level) W1 (see FIG. 6). The water level adjustment section 19 includes a wall 19a that is formed on a portion of the top section 17 in the left-right direction and that narrows the width of the flow path within the water seal formation section 10. The wall 19a has a triangular shape in cross section in the front-rear direction. Note that the state in which a water seal is formed is a state in which a space upstream of the water seal forming part 10 and a space downstream of the water seal forming part 10 are separated by the water seal. In the present embodiment, at the water level at which the upper end of the inner folded part between the descending flow path 14 and the rising flow passage 16 is submerged (the water level above the folded part), the upper end of the inner folded part between the descending flow passage 14 and the rising flow passage 16 is located on the upstream side of the water seal forming part 10. The space is separated from the space on the downstream side of the water seal forming part 10 by a water seal, and a water seal is formed.

The mesh basket storage section 12 is formed in a size such that the mesh basket 21 can be placed inside. The mesh basket storage section 12 has a hollow shape in which the mesh basket 21 can be placed inside.

As shown in FIGS. 3 and 5, the entrance of the mesh basket storage section 12 is opened in a rectangular shape and forms a drain port portion of the sink 4. The mesh basket storage portion 12 is formed by partially recessing the bottom portion 4a further downward. The mesh basket storage section 12 is formed into a rectangular cylindrical shape.

As shown in FIG. 4, the water seal forming section 10 forms a trap-shaped flow path that forms a water seal at the water seal water level W0.
The drainage device 1 further includes a lid 22 that is a lid portion formed to cover the upper part of the entrance of the mesh basket storage section 12 of the water seal forming section 10, and a lid 22 arranged on the flow path inside the mesh basket storage section 12. Additionally, a mesh basket 21 having a mesh, a flow rate sensor 24 that detects water discharged from the kitchen faucet device 6, an ultrasonic oscillator 26 that irradiates ultrasonic waves to the water in the water seal forming part 10, and an ultrasonic oscillator. 26, and a notification device 30 that notifies the ultrasonic irradiation by the ultrasonic oscillator 26.

The lid 22 is provided to be removable from the mesh basket storage section 12. The lid 22 is attached to the top of the net basket 21 so that the net basket 21 is difficult to see from above. The lid 22 forms an inlet 23 between the lid 22 and the bottom 4a of the sink 4, which is a gap through which small objects such as water and dirt flow.

The mesh basket 21 is formed such that its upper end is disposed inside the entrance, and its upper end substantially coincides with the entrance. Therefore, the mesh basket 21 is formed to cover the entire flow path below the inlet. The mesh basket 21 has a plurality of pores formed therein, and allows water flowing in from the sink 4 to pass therethrough, while preventing small objects such as garbage contained in the water flowing in from the sink 4 from passing through the mesh basket 21. It is designed to be collected. The mesh basket 21 is formed into a rectangular shape when viewed from above. The mesh basket 21 can be changed to a trash trapping member of any shape that has the function of trapping trash and the like.

The flow rate sensor 24 detects the flow of water supplied to the water seal forming section 10 . The flow rate sensor 24 is provided between the hot and cold water mixing faucet 6a and the water spouting portion 6b of the kitchen faucet device 6. The flow rate sensor 24 can detect the flow rate of water spouted from the water spouting part 6b of the kitchen faucet device 6 per unit time. In this manner, the flow rate sensor 24 can detect that water is being spouted from the water spouting section 6b by detecting the flow rate per unit time. In this manner, the flow rate sensor 24 detects the water spouted from the water spouting section 6b, and therefore can detect the supply of water to the water seal forming section 10. That is, the flow rate sensor 24 functions as a detection section. Flow rate sensor 24 is electrically connected to control device 28 .

The detection unit may be any type as long as it detects the supply of water to the water seal forming unit 10 or detects the outflow of water from the water seal forming unit 10. Such a detection section can be configured by, for example, a detection section that detects a flow rate or a detection section that detects a water level.

The detection unit that detects the flow rate is constituted by the flow rate sensor 24 that detects the flow rate as in this embodiment. At this time, if the flow rate sensor 24 is provided upstream from the water seal forming part 10, it is possible to detect the supply of water to the water seal forming part 10; When provided downstream from the water seal forming section 10, the outflow of water from the water seal forming section 10 can be detected. When the detection unit is the flow rate sensor 24, for example, the time period during which the flow rate sensor 24 detects the supply of water to the water seal forming unit 20 or the water seal formation is determined by the flow rate measured by the flow rate sensor 24 in the control device 28. The amount of water can be calculated by multiplying the time during which water is detected flowing out of the area.
In addition, as a modification, the detection section is configured by a solenoid valve provided in the water passage of the kitchen faucet device 6, and the control device 28 detects the water flow when the solenoid valve of the water passage of the kitchen faucet device 6 is in the open state. The amount of water may be estimated (detected) by multiplying by the flow rate. The detection section using the electromagnetic valve can detect the supply of water to the water seal forming section 10. If the detection unit is only a solenoid valve, it is not possible to directly measure the flow rate, so for example, the amount of water can be estimated by multiplying the flow rate value preset in the control device 28 by the time the solenoid valve is open. .
As another modification, the detection section is configured by a pressure sensor provided in the water passage of the kitchen faucet device 6, the flow path of the water seal forming part, or the flow path before and after the water seal forming part, and the pressure sensor is The water pressure in the flow path may be detected, and the control device 28 may estimate (detect) the flow rate based on this water pressure. At this time, if the pressure sensor is provided upstream from the water seal forming part 10, it is possible to detect the supply of water to the water seal forming part 10, while the pressure sensor is provided downstream from the water seal forming part 10. When provided on the side, the outflow of water from the water seal forming section 10 can be detected. When the detection unit is a pressure sensor in the flow path, the flow rate cannot be directly measured, so for example, the flow rate value preset in the control device 28 or the pressure value measured by the pressure sensor in the control device 28 is used. The amount of water can be estimated by multiplying the flow rate value calculated from the time period during which the pressure sensor detects the supply of water to the water seal forming section 20 or the time period during which the pressure sensor detects the outflow of water from the water seal forming section. .

As yet another modification, the detection unit that detects the water level may be configured by a water level sensor provided within the water seal forming unit 10. As described above, by providing the water level sensor in the water seal forming section 10, it is possible to detect at least one of the supply of water to the water seal forming section 10 or the outflow of water from the water seal forming section 10. .
As another modification, the detection section is configured by a pressure sensor provided in the flow path in the water seal forming section, the pressure sensor detects the water pressure in the flow path, and the control device 28 controls the water seal based on this water pressure. The water level within the formation may be estimated (sensed). In this way, by providing the pressure sensor in the water seal forming part 10, it is possible to detect at least one of the supply of water to the water seal forming part 10 or the outflow of water from the water seal forming part 10. .

The ultrasonic oscillator 26 is provided below the downward flow path 14 of the water seal forming section 10. The ultrasonic oscillator 26 is provided at the bottom of the water seal forming section 10 and is arranged to radiate ultrasonic waves upward. The ultrasonic oscillator 26 is electrically connected to a control device 28.

The control device 28 has a built-in CPU, memory, etc., and has a function of receiving the detection signal transmitted from the flow rate sensor 24, and also controls the ultrasonic oscillator 26 and the notification device 30 based on a predetermined control program stored in the memory. control the behavior of The control device 28 controls the irradiation of ultrasonic waves by the ultrasonic oscillator 26 and the stop of the irradiation, and also controls the start of notification of the notification device 30, the execution of a light emitting state such as blinking, and the stop of notification. The control device 28 has an automatic cleaning mode in which the ultrasonic oscillator 26 automatically irradiates water in accordance with the detection of water by the flow rate sensor 24, and this automatic cleaning mode allows the kitchen faucet device 6 to start discharging water. The start of ultrasonic cleaning can be automatically linked. Furthermore, the control device 28 further includes a notification mode in which the notification device 30 provides notification in response to water detection by the flow rate sensor 24. This notification mode of the control device 28 is also a first notification mode in which the notification device 30 notifies execution of ultrasonic irradiation.

The control device 28 further includes a failure determination mode in which a failure of at least one of the ultrasonic oscillator 26 and the control device 28 is determined, and a failure determination mode in which the ultrasonic oscillator 26 or the control device 28 is determined to be malfunctioning. A second notification mode is provided in which the notification device 30 notifies the determination of a failure based on the failure determination mode. As a modification, the control device 28 may determine the failure location and change the notification method using the second notification mode to a different method (for example, a method using a different blinking pattern) for each failure location.

Furthermore, even if the flow rate sensor 24 detects the supply of water to the water seal forming section 10, if the control device 28 determines that a water seal is not formed in the water seal forming section 10, the control device 28 performs a sealing operation. An ultrasonic oscillator protection mode is provided in which the ultrasonic oscillator 26 irradiates ultrasonic waves after determining that a predetermined amount of water has been supplied into the water forming section 10 .
In such an ultrasonic oscillator protection mode, when the control device 28 determines that a water seal is not formed in the water seal forming section 10 because the cumulative amount of water does not exceed the predetermined value B1 (see FIG. 11), In this case, the ultrasonic oscillator 26 does not start irradiating ultrasonic waves until the cumulative amount of water exceeds a predetermined value B1. After determining that water has been supplied, in other words, after determining that a water seal has been formed, ultrasonic irradiation by the ultrasonic oscillator 26 is performed.
In such an ultrasonic oscillator protection mode, the control device 28 detects the current supply of water to the water seal forming unit 10 from the previous detection of the water flow to the water seal forming unit 10 to the current detection of the water flow to the water seal forming unit 10. If it is determined that a water seal is not formed in the water seal forming part 10 because the time exceeds the predetermined time T1 which is the first predetermined time, the flow of water to the water seal forming part 10 this time is After the start of detection of the supply of water, control is performed to prevent the ultrasonic oscillator 26 from starting irradiation of ultrasonic waves until a predetermined time T6, which is a second predetermined time such that a water seal is formed, has elapsed, and the predetermined time T6 has elapsed. However, after determining that at least a predetermined amount of water A2 has been supplied into the water seal forming section 10, the ultrasonic oscillator 26 executes ultrasonic irradiation.

Next, with reference to FIGS. 4, 6, and 7, a notification device 30 for a drainage system according to a first embodiment of the present invention will be described.
The notification device 30 is provided in and around the drainage system 2 including the drainage device 1 . The notification device 30 performs both notification in the first notification mode and notification in the second notification mode. That is, the single notification device 30 serves as both a notification section in the first notification mode and a notification section in the second notification mode. The notification device 30 is electrically connected to the control device 28. The notification device 30 includes a light emitting unit 30a that visually reports execution of the irradiation operation of the ultrasonic oscillator 26 by emitting light. The light emitting section 30a is, for example, an LED. The light emitting section 30a is formed by arranging LEDs in a ring shape at predetermined intervals and arranging the light emitting direction of the LEDs toward the inside of the flow path. The light emitting section 30a is provided so as to illuminate the inside of the water seal forming section 10 with light. The light emitting section 30a is arranged to emit light toward the center of the downward flow path 14, and reflected light leaks upward from the downward flow path 14. Therefore, when the lid 22 is removed, the user looking from the inlet side of the water seal forming section 10 has the impression that the descending channel 14 itself is shining, and the inside of the descending channel 14 is easily visible. It has become. The light emitting part 30a is an LED that emits blue light, and when the light emitting part 30a is in a light emitting state, the flow path glows blue, giving the entire drainage device 1 a sense of luxury and cleanliness.

The light emitting section 30a is attached to the water seal forming section 10. More specifically, the light emitting part 30a is attached near the descending channel 14 that descends on the entrance side of the water seal forming part 10. The light emitting section 30a is arranged outside the downward flow path 14 of the water seal forming section 10 so that the main light emitting direction is inward of the downward flow path 14. At this time, the flow path wall 32 located at least inward in the horizontal direction from the light emitting section 30a in the water seal forming section 10 is formed as a light transmitting wall that transmits light. In this embodiment, the outer cylindrical member 31 of the water seal forming part 10 to which the light emitting part 30a is attached is disposed inside the outer cylindrical member 31 and is screwed together with the outer cylindrical member 31. The inner cylindrical member 33 is made of a material that transmits light, and constitutes the channel wall 32. Therefore, the light emitting section 30a is attached to the portion of the channel wall 32 that is formed to transmit light. For example, the cylindrical region A of the channel wall 32 transmits light and the wall surface emits light. The channel wall 32 that transmits light is formed of a transparent or translucent resin material or the like. Examples of the transparent material include natural colored polystyrene resin, transparent colored acrylic, transparent colored ABS resin, natural colored polycarbonate resin, and glass. The translucent material is, for example, natural colored polypropylene resin or natural colored polyethylene resin. On the other hand, materials that do not (hardly allow) light to pass through include, for example, polypropylene resin colored in a color other than natural colors, ABS resin in natural colors, stainless steel, rubber, and the like. In addition, as a modification, the notification device 30 may be provided on a wall surface around the drainage system 2, for example, on a wall surface in a kitchen. As another modification, the light emitting section 30a may be disposed within the recessed portion 4b to illuminate the inside of the downward flow path 14. As yet another modification, a light emitting section 30a may be provided in the water discharging section 6b to illuminate the inside of the descending channel 14.

Further, as a modification, the light emitting section 30a may be a display section that displays characters and the like by emitting light.

Again, in this embodiment, the control device 28 sets the light emission state of the notification device 30 in the first notification mode and the light emission state of the notification device 30 in the second notification mode to different light emission states. The control device 28 sets one of the light emission state of the notification device 30 in the first notification mode and the light emission state of the notification device 30 in the second notification mode to a light emission state where the lighting continues, and sets the other to a light emission state where the light continues to flash. It is set. For example, in the first notification mode, the control device 28 sets the light emitting unit 30a of the notification device 30 to a light emitting state where it continues to be lit, whereas in the second notification mode, the control device 28 causes the light emitting unit 30a of the notification device 30 to continue to emit light. The section 30a is brought into a blinking light emitting state.

Furthermore, the control device 28 controls the light emission state in the second notification mode between the light emission state of the light emission unit 30a of the notification device 30 in the first notification mode and the light emission state of the light emission unit 30a of the notification device 30 in the second notification mode. is configured to be brighter than the light emitting state in the first notification mode. For example, the light emitting state of the light emitting unit 30a in the second notification mode is a larger value based on watts (W), luminous intensity (cd), or illuminance (lx) compared to the light emitting state of the light emitting unit 30a in the first notification mode. Set. The different light emitting states also include other methods for recognizing that the light emitting state of the light emitting unit 30a in the first notification mode is different from the light emitting state of the light emitting unit 30a in the second notification mode. For example, in the first notification mode, the light emitting unit 30a of the notification device 30 is in a blue light emitting state, whereas in the second notification mode, the light emitting unit 30a of the notification device 30 is in a red light emitting state. good. Further, in the second notification mode, some of the plurality of light emitting units 30a may be in a red light emitting state and the remaining part may be in a blue light emitting state. Further, in the present embodiment, in the second notification mode, the light emitting unit 30a is blinked and in a bright light emitting state, but either one may be in the light emitting state in the second notification mode.

Next, the light emitting state of the notification device 30 of the drainage device according to the first embodiment of the present invention will be described with reference to FIGS. 8 to 10.
FIG. 8 is a diagram showing the light emitting state of the notification device of the drainage device according to the first embodiment of the present invention with the lid and the mesh basket removed, and FIG. FIG. 10 is a diagram illustrating the light emitting state of the notification device of the first embodiment of the present invention with the lid and the mesh basket attached, and FIG. It is a figure shown in the state where a lid and a mesh basket are attached. Figures 8 to 10 were created based on photographs taken during the day, and in order to clearly show the light emission state with a relatively small amount of light, the bright and dark areas are emphasized, and the entire figure is slightly distorted. It has a black color. Here, the sink 4 in FIGS. 8 to 10 is white, and the light emitted from the water seal forming part 10 is blue.

The light emitting part 30a of the notification device 30 is arranged outside the downward flow path 14. Therefore, as shown in FIG. 8, when the light emitting section 30a is in a light emitting state, the inside of the downward flow path 14 of the water seal forming section 10 is illuminated, and reflected light leaks upward from the downward flow path 14. It has become. When the light emitting part 30a emits light, the light leaking upward from the downward flow path 14 passes through the mesh of the mesh basket 21 and reaches the lid 22 and the sink 4 installed above the entrance of the water seal forming part 10. The water leaks out from the inlet 23 between the bottom 4a and the bottom 4a. The light leaking from the inlet 23 between the lid 22 and the bottom 4a is set to have an illuminance or amount of light that is slightly recognizable to the user. Comparing FIGS. 9 and 10, it can be seen that when the light emitting part 30a emits light, the light leaking from the inlet 23 between the lid 22 and the bottom part 4a (see FIG. 9) is more easily understood. The light intensity of the light emitting part 30a of the notification device 30 is set so that the change remains within a relatively small amount compared to the state in which no light leaks out when the light emitting part 30a is not emitting light (see FIG. 10). Ru.

Here, in FIG. 9, blue light leaking from the inlet 23 between the lid 22 and the bottom 4a can be slightly recognized. For comparison, FIG. 10 shows a state in which the light emitting part 30a is not in a light emitting state and no light is leaking between the lid 22 and the bottom 4a of the sink 4. In FIG. 10, when no light leaks out, the inlet 23 portion between the lid 22 and the bottom 4a appears dark and black. Compared to the state shown in FIG. 10, in FIG. 9, the inlet 23 part on the near side of the drawing glows slightly blue overall, and the light emitted from the inlet 23 part on the back side illuminates the surrounding bottom surface and These walls are painted with a slight blue color. It is also possible to give the impression that the lid 22 is floating above the blue light leaking from the inlet 23 portion.

Therefore, in the notification mode, the control device 28 can notify the user about the irradiation of the ultrasonic oscillator 26 with the lid 22 attached. In addition, since the user is notified by the reflected light leaking into the vicinity of the lid 22 from between the lid 22 and the bottom 4a, the intensity of the light is relatively weak compared to the light that is directly irradiated to the user. In addition, the illuminated area is relatively small compared to direct light that spreads over a wide range, making it less likely to cause annoyance to the user.

Measurements were taken in the area inside the sink near the inlet 23 when the lid 22 was attached above the entrance of the water seal forming part 10 and the lights in the room where the drainage device 1 was installed were turned off and the light emitting part 30a was emitting light. The first illuminance of the light is emitted when the lid 22 is attached above the entrance of the water seal forming section 10, the lighting in the room where the drainage device 1 is installed is turned on, and the light emitting section 30a is not emitting light. The light emitting section 30a, the lid 22, or the water seal forming section 10 is configured so that the illuminance of the light measured in the area inside the sink near the entrance 23 is equal to or lower than the second illuminance.
The first illuminance is measured, for example, at night when the lights in the room in which the drainage device 1 is installed are turned off. Therefore, the first illuminance is the illuminance due only to the light from the light emitting section 30a leaking from the inlet 23. The first illuminance is measured in a region inside the sink 4 near the inlet 23, for example, in a region within 5 cm from the entrance of the inlet 23 and outside the lid 22 when viewed from above. The first illuminance may be measured in a region within the sink 4 near the inlet 23 and in a region in the opening direction of the inlet 23 . The first illuminance is measured in a plurality of areas, for example, four areas within the sink 4 near the inlet 23, and is calculated by averaging the plurality of illuminance measurements so as to improve the accuracy of illuminance measurement. Note that the first illuminance is measured by pointing the sensor of the illuminance meter toward the inlet 23. The first illuminance is preferably 0 lx or more and 500 lx or less, more preferably 0 lx or more and 300 lx or less.
The second illuminance is measured in the same drainage device 1 in which the first illuminance was measured, for example at night with the lights in the room in which the drainage device 1 is installed being turned on. Therefore, the second illuminance is mainly the illuminance due to the light of the indoor lighting lamp. Note that the second illuminance is measured during the day, and may include indirect light of external natural light. The second illuminance is measured in the same measurement area as the first illuminance. That is, the second illuminance is measured in a region inside the sink 4 near the inlet 23, for example, in a region within 5 cm from the entrance of the inlet 23 and outside the lid 22 when viewed from above. The second illuminance is also measured in a plurality of areas, for example, four areas within the sink 4 near the inlet 23, so as to improve the accuracy of illuminance measurement, and is calculated by averaging the plurality of illuminance measurements. Note that the second illuminance is measured with the sensor of the illuminance meter facing above the sink 4. Further, the second illuminance is measured at the same position as the measured value of the first illuminance.

When the first illuminance is equal to or lower than the second illuminance, the illuminance of the light from the light emitting section 30a leaking from the inlet 23 is equal to or lower than the illuminance of light from an indoor lighting lamp or the like. As a result, the light from the light emitting section 30a leaking from the inlet 23 is mainly visible to the user under the light of the indoor lighting lamp or the like. The user feels that the light from the light emitting section 30a leaking out under the light of the indoor lighting lamp or the like blends in, making it difficult for the user to independently perceive the light from the light emitting section 30a.

Next, the operation of the drainage device according to the first embodiment of the present invention described above will be explained with reference to FIGS. 11 to 13. Regarding the operation (effect) of the drainage device according to the first embodiment of the present invention, only the points that are different from the operation (effect) of the drainage system 2 according to the first embodiment will be explained, and the explanation of the similar parts will be omitted.
FIG. 11 is a flowchart showing the control details of the drainage device according to the first embodiment of the present invention. FIG. 12 is a flowchart showing the control contents continued from the flowchart of FIG. 11. FIG. 13 is a diagram showing the timing of notification according to the notification mode of the control device in the drainage system according to the first embodiment of the present invention.
In FIG. 11, S indicates each step. The code A in the flowchart of FIG. 11 indicates that the process continues from the code A in the flowchart of FIG. 12, and the code B in the flowchart of FIG. 11 indicates that the process continues from the code B in the flowchart of FIG. In FIG. 13, the horizontal axis indicates time, and the vertical axis indicates, from top to bottom, the irradiation timing of the ultrasonic oscillator, the amount of dirt in the water seal forming part, the notification timing of the notification mode in Modification 1, and Modification 2. The timing of notification in the notification mode in , and the timing of notification in the notification mode in this embodiment are shown. Time t0 is the timing at which the flow rate sensor 24 detects water supply.

As shown in FIG. 11, at the start of the process, the kitchen faucet device 6 is in a standby state before water is spouted. Water is stored in the water seal forming section 10 at a water seal water level W0 (see FIG. 6). The supply of water to the water seal forming section 10 is started by the user's operation input to the operation lever 6d. Note that the supply of water to the water seal forming section 10, which will be described later, may be started automatically (for example, periodically) under the control of the control device 28.
First, in S1 of FIG. 11, the control device 28 determines whether or not the flow rate sensor 24 detects water supply.
If water supply is detected by the flow rate sensor 24 (in the case of YES), the control device 28 can determine that water spouting from the water spouting part 6b of the kitchen faucet device 6 has started, and the process proceeds to S2.
If the flow rate sensor 24 does not detect water supply (in the case of NO), the control device 28 determines that the water spouting from the water spouting part 6b of the kitchen faucet device 6 has ended or remains in a stopped state. Since it can be determined, proceed to S3.

Next, in S2, the control device 28 controls the current flow rate (for the current series of water spouts) from the time when the water supply was detected by the flow rate sensor 24 last time (for the previous series of water spouts). It is determined whether a predetermined time T1, which is a first predetermined time, has elapsed by the time the sensor 24 detects the supply of water. The predetermined time T1 is a time during which the water seal may be canceled due to water drying up due to evaporation of water in the water seal forming part 10, and is, for example, a time within a range of one month to one year, For example, one month.
If the predetermined time T1 has not elapsed (in the case of NO), the control device 28 can determine that the possibility that the water seal in the water seal forming section 10 will be eliminated due to drying up is low, and the process proceeds to S4.
If the predetermined time T1 has elapsed (in the case of YES), the control device 28 determines that the water seal in the water seal forming part 10 has dried up and there is a high possibility that a water seal is not formed in the water seal forming part. It can be determined that this is the case, and the process proceeds to S5.

Note that in S3, the control device 28 determines whether or not the ultrasonic oscillator 26 is irradiating ultrasonic waves.
When the ultrasonic oscillator 26 is not emitting ultrasonic waves (in the case of NO), the control device 28 indicates that the flow rate sensor 24 is not detecting water supply and the ultrasonic oscillator 26 is not operating. Therefore, it can be determined that each device is in a standby state before operation, and the process returns to S1.
When the ultrasonic oscillator 26 is emitting ultrasonic waves (in the case of YES), the control device 28 causes the ultrasonic oscillator 26 to emit ultrasonic waves even though water supply is not detected by the flow rate sensor 24. Since it can be determined that the image is being irradiated, the process advances to S9.

Next, in S4, the control device 28 controls the cumulative amount of water obtained based on the flow rate measured by the flow rate sensor 24 (for example, the cumulative amount of water from after the construction of the drainage device 1 to the end of the previous detection of water supply by the flow rate sensor 24). ) exceeds a predetermined value B1. The predetermined value B1 is the amount of water required to form a water seal in the water seal forming section 10 from an empty state of water, and is set based on the configuration of the water seal forming section.
If the cumulative amount of water exceeds the predetermined value B1 (in the case of YES), the control device 28 indicates that the drainage device 1 is not in the state immediately after construction, and a water seal is formed in the water seal forming part 10. Since it can be determined that this is the case, the process proceeds to S6.
If the cumulative amount of water does not exceed the predetermined value B1 (in the case of NO), the control device 28 determines that the drainage device 1 is in a state immediately after construction and a water seal is not formed in the water seal forming part 10. Since this can be determined, the process returns to S1 in order to perform control to prevent the ultrasonic oscillator 26 from starting ultrasonic irradiation until the cumulative amount of water exceeds the predetermined value B1. The predetermined value B1 is, for example, a water amount within a range of 200 ml to 1000 ml, and is, for example, 500 ml.

Note that in S5, the control device 28 determines whether a predetermined time T2 has elapsed since the flow rate sensor 24 started detecting water supply.
If the predetermined time T2 has elapsed (in the case of YES), the control device 28 can determine that the time for the water spouted from the water spouting section 6b to reach the water seal forming section 10 has elapsed, so the control device 28 proceeds to S8. move on.
If the predetermined time T2 has not elapsed (in the case of NO), the control device 28 can determine that the time for the water spouted from the water spouting section 6b to reach the water seal forming section 10 has not elapsed. In order to wait until the predetermined time T2 has elapsed, the process returns to S1.

Next, in S6, the control device 28 determines whether a predetermined time T2 has elapsed since the flow rate sensor 24 started detecting water supply.
If the predetermined time T2 has elapsed (in the case of YES), the control device 28 can determine that the time for the water spouted from the water spouting section 6b to reach the water seal forming section 10 has elapsed, so the control device 28 proceeds to S7. move on.
If the predetermined time T2 has not elapsed (in the case of NO), the control device 28 can determine that the time for the water spouted from the water spouting section 6b to reach the water seal forming section 10 has not elapsed. In order to wait until the predetermined time T2 has elapsed, the process returns to S1.

Next, in S7, the control device 28 determines whether the supplied water amount obtained from the flow rate measured by the flow rate sensor 24 is equal to or greater than a predetermined water amount A1 that increases the water level in the water seal forming section 10. judge.
When the amount of water supplied is equal to or greater than the predetermined water amount A1 (in the case of YES), the control device 28 controls whether water is supplied to the water seal forming section 10 in an amount that increases the water level in the water seal forming section 10. Since it can be determined that this is the case, the process advances to S14.
When the water supply flow rate is less than the predetermined water amount A1 (in the case of NO), the control device 28 controls the water seal formation unit 10 to supply water in an amount that increases the water level in the water seal formation unit 10. Since it can be determined that the process is not performed, the process returns to S1.

In addition, in S8 following S5, the control device 28 restores the water seal in which the amount of water supplied from the flow rate measured by the flow rate sensor 24 has dried up (for example, causes the water seal mechanism to be provided again). It is determined whether the predetermined water amount A2 or more is sufficient for this purpose.
When the amount of water supplied is equal to or greater than the predetermined water amount A2 (in the case of YES), the control device 28 causes the water seal to be filled with at least the predetermined amount A2, which is sufficient to restore the water seal in the water seal forming section 10. Since it can be determined that the water has been supplied to the formation unit 10 and a water seal has been formed, the process proceeds to S14.
When the water supply flow rate is less than the predetermined water amount A2 (in the case of NO), the control device 28 causes the predetermined water amount A2, which is sufficient to restore the water seal in the water seal forming section 10, to form a water seal. Since it can be determined that the water is not being supplied to the water seal forming part 10, a predetermined time T6, which is a second predetermined time during which a water seal is formed, has elapsed after the start of detection of the current supply of water to the water seal forming part 10. The process returns to S1 in order to control the ultrasonic oscillator 26 so as not to start irradiation of ultrasonic waves until the ultrasonic oscillator 26 does so. The predetermined amount of water A2 is the amount of water for the water in the water seal forming part 10 to restore the water seal in the water seal forming part 10 (form a water seal). The predetermined water amount A2 is, for example, a water amount within a range of 200 ml to 1000 ml, and is, for example, 500 ml.

Note that in S9 following S3, the control device 28 stops the ultrasonic oscillator 26 from irradiating ultrasonic waves.

Next, in S10, the control device 28 determines whether or not the notification device 30 is giving a notification.
If the notification device 30 is not providing notification (in the case of NO), the process returns to S1 in order to return to the standby state.
If the notification device 30 is giving notification (in the case of YES), the control device 28 can determine that the notification ending process by the notification device 30 is necessary, and therefore proceeds to S11.

Next, in S11, the control device 28 determines whether a predetermined time T4 has elapsed since the ultrasound irradiation by the ultrasound oscillator 26 ended.
If the predetermined time T4 has not elapsed (in the case of NO), the process returns to S11 in order to achieve a delay time from the end of the irradiation of the ultrasonic oscillator 26 to the end of the notification.
If the predetermined time T4 has elapsed (in the case of YES), the control device 28 determines that the delay time from the end of the irradiation of the ultrasonic oscillator 26 to the end of the notification has been achieved, and proceeds to S12.

Next, in S12, the control device 28 stops the notification by the notification device 30, and returns to S1.

Next, in S13, the control device 28 determines whether or not the ultrasonic oscillator 26 is emitting ultrasonic waves.
If the ultrasonic oscillator 26 is not emitting ultrasonic waves (NO), the control device 28 proceeds to S14 in order to cause the ultrasonic oscillator 26 to emit ultrasonic waves.
If the ultrasonic oscillator 26 is emitting ultrasonic waves (in the case of YES), the control device 28 advances to S15 because the ultrasonic oscillator 26 is already emitting ultrasonic waves.

Next, in S14, the control device 28 starts irradiation of ultrasonic waves by the ultrasonic oscillator 26, and proceeds to S15.

Next, in S15, the control device 28 determines whether the voltage, current, or frequency of the ultrasonic oscillator 26 is within a specified range in the failure determination mode.
If the voltage, current, or frequency of the ultrasonic oscillator 26 is within the specified range (in the case of YES), the control device 28 determines whether the ultrasonic oscillator 26 or the control device 28 itself operates normally in the failure determination mode. Since it can be determined that this is the case, the process advances to S16.
If the voltage, current, or frequency of the ultrasonic oscillator 26 is not within the specified range (in the case of NO), the control device 28 determines whether the ultrasonic oscillator 26 or the control device 28 itself operates normally in the failure determination mode. Since it can be determined that there is a failure, the process advances to S24.

Next, in S16, the control device 28 determines whether or not the notification device 30 is giving a notification.
If the notification device 30 is not providing notification (in the case of NO), the process advances to S17.
If the notification device 30 is making a notification (in the case of YES), the control device 28 proceeds to S19 because the notification process by the notification device 30 has already started.

Next, in S17, the control device 28 determines whether a predetermined time T3 has elapsed since the ultrasonic oscillator 26 started irradiating the ultrasonic waves. The predetermined time T3 is, for example, a time within the range of 0.5S to 2S, and is, for example, 1S.
If the predetermined time T3 has elapsed (in the case of YES), the control device 28 can determine that the delay time from the start of ultrasonic irradiation to the start of notification has been achieved, and the process proceeds to S18.
If the predetermined time T3 has not elapsed (NO), the control device 28 returns to S1 in order to achieve the delay time from the start of ultrasonic irradiation to the start of notification.

Next, in S18, the control device 28 starts notification by the notification device 30 in the notification mode (first notification mode, the same will be omitted hereinafter), and the process proceeds to S19. Therefore, when the flow rate sensor 24 detects the supply of water or the outflow of water, or when the ultrasonic oscillator 26 executes ultrasonic irradiation (for example, based on the start or stop of ultrasonic irradiation), the control device 28 ) is running notification mode.
As shown in FIG. 13, the notification mode of the control device 28 is set at least from time t2 after a predetermined time T3 (for example, after 1 second) from the start of irradiation by the ultrasonic oscillator 26 to time t3 when the irradiation ends (S20). Notification is performed by the notification device 30. In this way, the notification mode of the control device 28 is executed especially when the amount of dirt in the descending flow path 14 is relatively small compared to when the ultrasonic oscillator 26 starts irradiation. By executing the notification mode at a time when there is relatively little dirt, it is possible to easily confirm that the dirt inside the water seal forming section is cleaned and the inside of the water seal forming section is clean.

In this embodiment, the notification mode of the control device 28 is started at least after a predetermined time T3 has elapsed (time t2) from the start of irradiation by the ultrasonic oscillator 26 (time t1), and after a predetermined time T4 has elapsed from the end of irradiation (S20). The notification device 30 performs the notification so that the notification ends later (time t4). If the notification mode is executed even after the ultrasonic oscillator 26 has finished irradiating, it is easy to confirm that the interior of the water seal forming section 10 is clean after the ultrasonic oscillator 26 is activated. The predetermined time T3 is, for example, one second. The notification timing of the notification mode of the control device 28 can be changed with respect to the irradiation timing of the ultrasonic oscillator 26. As shown in Modification 1 of FIG. 13, the notification mode of the control device 28 is started at the same time as the ultrasonic oscillator 26 starts oscillating (time t1), and when the ultrasonic oscillator 26 ends irradiation (S20) (time t3). The notification device 30 may make notifications so that they end almost at the same time. Further, as shown in Modification 2, the notification mode of the control device 28 changes the irradiation of the ultrasonic oscillator 26 from before the start of irradiation of the ultrasonic oscillator 26 (time t0) based on the detection of water supply by the flow rate sensor 24. The notification may be started in advance, or the notification may be performed by the notification device 30 so as to end after a predetermined time T4 has elapsed (time t4) from the end of irradiation by the ultrasonic oscillator 26 (S20) (time t3). The timing before the start of irradiation (time t0) is, for example, the timing at which the flow rate sensor 24 detects the supply of water.

Next, in S19, the control device 28 determines whether a predetermined time limit U1 has elapsed since the ultrasonic oscillator 26 started irradiating the ultrasonic waves. The predetermined time limit U1 is, for example, a time within a range of 5S to 60S, and is, for example, 10S.
If the predetermined time limit U1 has elapsed (in the case of YES), the control device 28 should limit the continuous operation of the ultrasonic oscillator 26 in order to suppress a decrease in durability or failure due to continuous operation of the ultrasonic oscillator 26. It is determined that this is the case, and the process proceeds to S20.
If the predetermined time limit U1 has not elapsed (in the case of NO), the control device 28 operates within the time period in which the ultrasonic oscillator 26 can be operated continuously, and the control device 28 performs the operation for cleaning the inside of the water seal forming part 10. Since it can be determined that the operation is being performed within an effective range, the process returns to S1.

Note that in S20, the control device 28 stops irradiation of ultrasonic waves by the ultrasonic oscillator 26, and proceeds to S21.

Next, in S21, the control device 28 determines whether a predetermined time T4 has elapsed since the ultrasonic oscillator 26 finished irradiating the ultrasonic waves.
If the predetermined time T4 has not elapsed (in the case of NO), the process returns to S21 in order to achieve a delay time from the end of the irradiation of the ultrasonic oscillator 26 to the end of the notification.
If the predetermined time T4 has elapsed (in the case of YES), the control device 28 determines that the delay time from the end of the irradiation of the ultrasonic oscillator 26 to the end of the notification has been achieved, and proceeds to S22.

Next, in S22, the control device 28 stops the notification by the notification device 30, and proceeds to S23.

Next, in S23, the control device 28 determines whether the pause time U2 has elapsed since the ultrasonic oscillator 26 finished irradiating the ultrasonic waves.
If the downtime U2 has not elapsed (in the case of NO), the control device 28 controls the continuous operation of the ultrasonic oscillator 26 in order to suppress a decrease in durability or failure due to continuous starting and stopping of the ultrasonic oscillator 26. It is determined that starting and stopping should be restricted, and the process returns to S23 in order to ensure the downtime U2.
If the downtime U2 has elapsed (in the case of YES), the control device 28 controls the continuous operation of the ultrasonic oscillator 26 in order to suppress a decrease in durability or failure due to continuous starting and stopping of the ultrasonic oscillator 26. It is determined that the automatic starting and stopping can be restricted, and the process returns to S1.

Next, in S24 branched from S15, the control device 28 stops irradiation of ultrasonic waves by the ultrasonic oscillator 26 so that the ultrasonic oscillator 26 and other devices can be safely stopped, and proceeds to S25.

Next, in S25, the control device 28 determines whether or not the notification device 30 is giving a notification.
If the notification device 30 is not providing notification (in the case of NO), the process advances to S27.
If the notification device 30 is giving notification (in the case of YES), the control device 28 can determine that the notification ending process by the notification device 30 is necessary, and therefore proceeds to S26.

Next, in S26, the control device 28 stops the notification by the notification device 30, and proceeds to S27.

Next, in S27, the control device 28 can determine that it should be notified that the ultrasonic oscillator 26 or the control device 28 itself is in a failure state in which it is not operating normally according to the failure determination mode, so the control device 28 enters the second notification mode. This causes the notification device 30 to start notifying that there is such a failure state, and the process proceeds to S28. At this time, the control device 28 puts the light emitting section 30a of the notification device 30 into a blinking light emitting state.

Next, in S28, the control device 28 determines whether a predetermined time T5 has elapsed since the notification device 30 started reporting the failure state. The predetermined time T5 is, for example, a time within a range of 12 hours to 24 hours, and is, for example, 24 hours.
If the predetermined time T5 has not elapsed (in the case of NO), the process returns to S28 in order to continue notifying the failure state until the predetermined time T5 so as to make it easier for the user to notice the failure state. .
If the predetermined time T5 has elapsed (in the case of YES), the control device 28 can determine that there is a high possibility that the intention of making the user aware of the failure state has been achieved, and the process proceeds to S29. .
In this way, the control device 28 determines the duration of the light emission state in the second notification mode (for example, 24 time) is set longer than the duration of the light emitting state in the first notification mode (for example, 10 seconds).
Note that it is preferable that the notification in the second notification mode (notification of a failure state) can be terminated by some operation by the user. Thereby, it is possible to prevent the notification from continuing even though the user is aware of the malfunction.

Next, in S29, the control device 28 stops notification of the failure state by the notification device 30, proceeds to END, and ends the series of processing.

Next, the effects of the configuration of this embodiment will be explained.
In the present invention configured in this manner, the control device 28 has an automatic cleaning mode that starts irradiation of the ultrasonic oscillator 26 in response to detection by the flow rate sensor 24, so that the control device 28 has an automatic cleaning mode that starts irradiation of the ultrasonic oscillator 26 in response to detection by the flow rate sensor 24. This eliminates the burden on the user to operate the ultrasonic oscillator 26 to start irradiation depending on the water supply. In this way, the irradiation of the ultrasonic oscillator 26 is performed in the automatic cleaning mode in which the user does not perform an operation to start irradiation of the ultrasonic oscillator 26, and the irradiation of the ultrasonic oscillator 26 is visually and audibly controlled by the user. Even if it is difficult to confirm directly, the control device 28 can notify the user of the irradiation by the ultrasonic oscillator 26 in the notification mode.

In the present invention configured in this way, since the irradiation of the ultrasonic oscillator 26 is started in accordance with the supply of water to the water seal forming section 10, etc., the user can There is a high possibility that irradiation by the ultrasonic oscillator 26 will be performed when work is being done in the vicinity, for example, work using water in the kitchen, work using water in the bathroom, work using water in the washroom, etc. On the other hand, the notification device 30 is provided in and around the drainage system 2 including the drainage device 1. Thereby, when the user is working in and around the drainage system 2, the notification device 30 can notify the user that the ultrasonic oscillator 26 is irradiating the user. Therefore, the notification device 30 can timely notify the user that the ultrasonic oscillator 26 is irradiating the user with relatively quick timing.

In the present invention configured in this way, since the notification device 30 is provided with the light emitting section 30a that provides visual notification, the notification device 30 can be It is possible to suppress the possibility that people find the notification bothersome.
For example, when water is frequently supplied to the water seal forming unit 10 and notifications are frequently performed, the notification device 30 that visually gives notification includes a notification unit that gives an auditory notification. The notification device 30 can further reduce the possibility that the user will find the notification bothersome.

In the present invention configured in this manner, the light emitting section 30a of the notification device 30 is provided so as to illuminate the inside of the water seal forming section 10, so the light emitting section 30a of the notification device 30 is provided to illuminate the inside of the water seal forming section 10. The inside of section 10 can be easily viewed. Therefore, not only can the user be informed that ultrasonic cleaning is being performed, but also the user can easily confirm the cleaning effect of the ultrasonic cleaning inside the water seal forming section 10.

In the present invention configured in this way, the light emitting section 30a of the notification device 30 is attached to the water seal forming section 10. As a result, a part of the user's body, for example, a part of the user's body when the user is in a position looking into the water seal forming part 10, or a shield that blocks other light is sealed. Even if the light emitting part 30a is located above the entrance of the water seal forming part 10, the light emitting part 30a can directly illuminate the inside of the water seal forming part 10, making the inside of the water seal forming part 10 bright and easy to see.

In the present invention configured in this way, when the light emitting part 30a of the notification device 30 emits light, the illuminance of the light leaking into the area inside the sink 4 near the inlet 23 is equal to the illuminance of the room where the drainage device 1 is installed. The illuminance of the light is equal to or lower than the illuminance of the light measured in the area inside the sink 4 near the inlet 23 when the light is turned on and the light emitting part 30a is not emitting light. As a result, the light from the light emitting part 30a leaking from the inlet 23 is mainly visible to the user under the light of the indoor light, etc., and the light from the light emitting part 30a is visible to the user. It becomes difficult for the user to perceive the light independently. Therefore, even if water is frequently supplied to the water seal forming section 10 and notifications are frequently issued, it is possible to reduce the possibility that the notifications will cause trouble to the user.

In the present invention configured in this way, the light emitting part 30a of the notification device 30 is arranged outside the flow path of the water seal forming part 10, and the light emitting part 30a is connected to the light emitting part 30a through the flow path wall 32. The flow path in the inner part can be illuminated. As a result, the light emitting part 30a is arranged outside the water seal forming part 10 without making a hole for attaching the light emitting part 30a to the wall of the flow path of the water seal forming part 10, and the inside of the water seal forming part 10 is exposed. It can be illuminated by the light emitting section 30a. Therefore, it is possible to eliminate the fear of water leakage caused by making a hole in the wall of the channel of the water seal forming part 10 for attaching the light emitting part 30a.

In the present invention configured in this manner, the dirt in the water seal forming part 10 becomes more contaminant as the time approaches the end of irradiation with the ultrasonic oscillator 26, rather than the dirt in the water seal forming part 10 at the start of irradiation with the ultrasonic oscillator 26. It becomes less. By performing the notification by the notification device 30 until the end of the irradiation by the ultrasonic oscillator 26, it is possible to easily confirm that the inside of the water seal forming section 10 is clean by cleaning the dirt inside the water seal forming section 10.

Next, a drainage system including a drainage device according to a second embodiment of the present invention will be described with reference to FIGS. 14 and 15. The second embodiment is an example in which a drainage system equipped with a drainage device according to the present invention is applied to a bathroom. FIG. 14 is a perspective view of a drainage system equipped with a drainage device according to a second embodiment of the present invention. FIG. 15 is a partially enlarged sectional view of a portion near the floor of the bathroom taken along line XV-XV in FIG. 14.

Since the drainage system 102 according to the second embodiment has a basic structure similar to the drainage system 2 according to the first embodiment described above, only the differences between the second embodiment and the first embodiment of the present invention will be described. , the same reference numerals are given to the same parts in the drawings, and the description thereof will be omitted. The operation (effect) of the drainage system 102 according to the second embodiment of the present invention is the same as the operation (effect) of the drainage system 2 according to the first embodiment, so a description thereof will be omitted.

The drainage system 102 includes a washing area floor 104 that is a water receiving part provided in the bathroom, a bathtub 105 that is a water receiving part provided in the bathroom, and a bathroom faucet device (bathroom faucet device) that discharges water or hot water to the washing area floor 104. a shower faucet device (water spouting portion) 106 that is a bathroom faucet device (bathroom faucet) that spouts water or hot water into the bathtub 105; The bathtub side faucet device 109 is a supply device for discharging water (hot water) to the bathroom, the washing area side drainage device 101 is a drainage device provided at the bottom 104a of the washing area floor 104, and the drainage device provided at the bottom of the bathtub 105. It includes a bathtub-side drainage device 103 and a drainage channel 108 (see FIG. 15).

The washing area side faucet device 106 and the shower faucet device 107 are connected on the upstream side to a water supply channel 9 that is supplied with water from a water supply source (not shown) and a hot water supply channel 11 that is supplied with hot water. . The washing area side faucet device 106 and the shower faucet device 107 are equipped with a hot water mixing faucet 6a, mix water from the water supply channel 9 and hot water from the hot water supply channel 11, and discharge the water from the water spouting portions 106b and 107b. . The water supply channel 9 and the hot water supply channel 11 are connected to the hot and cold water mixing faucet 6a, and the water discharge side flow channel 6c extends downward from the hot and cold water mixing faucet 6a, passes through a flow rate sensor 24, which will be described later, and extends to the water discharge parts 106b and 107b. ing. The washing area floor 104 is formed so as to discharge water discharged from the washing area faucet device 106 and/or the shower faucet device 107 to the downstream side.

Next, a washing area side drainage device 101 according to a second embodiment of the present invention will be described.
First, the washing area side drainage device 101 includes a water seal forming part 110 provided below the bottom part 104a of the washing area floor 104. The water seal forming section 110 has a flow path formed therein. A portion of the water seal forming portion 110 is formed by a recessed portion 104b that is recessed downward from the bottom portion 104a. Note that the water seal forming portion 110 may be connected to the bottom portion 104a without using the recessed portion 104b. The water seal forming part 110 includes an inlet part 111 opened to the washing area floor 104 side, a first drainage channel 112 which is a trap-shaped channel provided on the downstream side of the inlet part 111, and a first drainage channel 112. It is provided with a second drainage flow path 114 branched from the second drainage flow path 114 and an intrusion suppressing part 116 that suppresses dirt of a certain size from entering the second drainage flow path 114. The water seal forming unit 110 drains the water spouted onto the washing area floor 104, and also stores a part of the spouted water to form a normal water seal at the water seal water level W2. function as a department. The inlet portion 111 is formed by recessing a portion of the bottom portion 104a below the bottom surface. Note that a water supply channel separate from the channel from the washing area floor 104 may be connected to the water seal forming section 110. Another water supply channel may be connected to another water source (not shown). The water supplied into the water seal forming section 110 also includes water that flows into the water seal forming section 110 from a water supply flow path that is different from the flow path from the washing area floor 104. Further, the water flowing into the water seal forming section 110 includes water containing detergent, shampoo, body soap, stains on dishes, stains on the water receiver, etc., such as domestic wastewater.

The washing area side drainage device 101 further includes a lid 122 formed to cover the upper part of the entrance of the mesh basket storage section 12 of the water seal forming section 10, and a lid 122 that is arranged on the flow path in the mesh basket storage section 12 and has a mesh. A mesh basket (not shown) having a mesh basket (not shown), a flow rate sensor 24 which is a detection unit that detects water discharged from the washing area side faucet device 106, and an ultrasonic wave sensor that irradiates ultrasonic waves to the water in the water seal forming unit 110. It includes an oscillator 26, a control device 28 that controls the irradiation of ultrasonic waves by the ultrasonic oscillator 26, and a notification device 30 that notifies the irradiation of ultrasonic waves by the ultrasonic oscillator 26.

The lid 122 is provided to be removable from the mesh basket storage section 12. The lid 122 is attached to the top of the mesh basket (not shown) so that the mesh basket (not shown) is difficult to see from above. The lid 122 forms an inlet between the lid 122 and the entrance at the upper end of the mesh basket storage section 12, which is a gap through which small objects such as water and dirt flow.

A mesh basket (not shown) is arranged at the upstream side of the water seal forming section 110. A mesh basket (not shown) is formed to cover the entire flow path below the inlet portion 111. The upper end of the mesh basket (not shown) is located at the entrance portion 111. The mesh basket (not shown) allows water to pass through, while keeping small objects such as garbage inside.

The flow rate sensor 24 detects the flow of water supplied to the water seal forming section 110. The flow rate sensor 24 is provided between the hot water/cold water mixing faucet 6a and the water spouting portions 106b and 107b of the washing area side faucet device 106 and/or the shower faucet device 107. The flow rate sensor 24 can detect the flow rate of water spouted from the water spouting sections 106b and 107b per unit time. That is, the flow rate sensor 24 functions as a detection section. Since the flow rate sensor 24 detects the water discharged from the water discharge parts 106b and 107b, it can detect the supply of water to the water seal forming part 110.

The ultrasonic oscillator 26 is provided below the entrance section 111 within the water seal forming section 110. The ultrasonic oscillator 26 is provided at the bottom of the water seal forming section 110 and is arranged to oscillate an ultrasonic wave upward.

The control device 28 has an automatic cleaning mode that automatically irradiates the ultrasonic oscillator 26 when the flow rate sensor 24 detects the supply of water to the water seal forming section 110. The start of discharging water from the faucet device 106 and/or the shower faucet device 107 and the start of ultrasonic cleaning can be automatically linked. Further, the control device 28 further sets a notification mode in which the notification device 30 makes a notification when the flow rate sensor 24 detects the supply of water to the water seal forming section 110 or the outflow of water from the water seal forming section 110. We are prepared. This notification mode of the control device 28 is also a first notification mode in which the notification device 30 notifies execution of ultrasonic irradiation.

The control device 28 further includes a failure determination mode in which a failure of at least one of the ultrasonic oscillator 26 and the control device 28 is determined, and a failure determination mode in which the ultrasonic oscillator 26 or the control device 28 is determined to be malfunctioning. A second notification mode is provided in which the notification device 30 notifies the determination of a failure based on the failure determination mode.

The control device 28 further determines that even if the flow rate sensor 24 detects the flow of water to the water seal forming section 110, a water seal is not formed in the water seal forming section 110 or a predetermined amount of water is stored. If it is determined that a predetermined amount of water has not been supplied to the water seal forming unit 110, the ultrasonic oscillator protection mode is provided in which the ultrasonic oscillator 26 irradiates ultrasonic waves after determining that a predetermined amount of water has been supplied into the water seal forming unit 110.
In such an ultrasonic oscillator protection mode, when the control device 28 determines that a water seal is not formed in the water seal forming section 110 because the cumulative amount of water does not exceed the predetermined value B1 (see FIG. 11), In this case, the ultrasonic oscillator 26 does not start irradiating ultrasonic waves until the cumulative amount of water exceeds the predetermined value B1, and the cumulative water amount exceeds the predetermined value B1, and furthermore, the predetermined water amount A1 is at least in the water seal forming part 110. After determining that water has been supplied, in other words, after determining that a water seal has been formed, ultrasonic irradiation by the ultrasonic oscillator 26 is performed.
In such an ultrasonic oscillator protection mode, the control device 28 detects the current supply of water to the water seal forming unit 110 from the previous detection of the water flow to the water seal forming unit 110. If it is determined that a water seal is not formed in the water seal forming part 110 because the time exceeds the predetermined time T1 which is the first predetermined time, the flow of water to the water seal forming part 110 this time is After the start of detection of the supply of water, control is performed to prevent the ultrasonic oscillator 26 from starting irradiation of ultrasonic waves until a predetermined time T6, which is a second predetermined time such that a water seal is formed, has elapsed, and the predetermined time T6 has elapsed. However, after determining that at least a predetermined amount of water A2 has been supplied into the water seal forming section 110, the ultrasonic oscillator 26 executes ultrasonic irradiation.

In the ultrasonic cleaning mode, the control device 28 can automatically link the start of water spouting from the washing area faucet device 106 and/or the shower faucet device 107 with the start of ultrasonic cleaning.

Next, with reference to FIG. 15, the first drainage flow path 112 and the second drainage flow path 114 of the drainage system according to the second embodiment of the present invention will be described.
The first drainage channel 112 of the water seal forming part 110 of the drainage system 102 is connected to a descending channel part 112a connected below the inlet part 111, and rises diagonally upward toward the downstream side so as to form a drainage trap. a first drainage channel rising section 112b that is an ascending channel; a top section 112c that is a folded back section between the first drainage channel rising section 112b and the outlet channel section 112d; and a descending channel that descends from the top section 112c. and an outlet flow path section 112d. The outlet flow path section 112d is connected to the drainage flow path 108.

The first drainage channel 112 is a trap-shaped channel that is folded back from the first drainage channel rising portion 112b toward the outlet channel portion 112d. The outlet flow path portion 112d is connected to the downstream end of the first drainage flow path rising portion 112b and is formed to extend substantially vertically downward. A water seal is formed in the descending flow path portion 112a, the first drainage flow path rising portion 112b, and the second drainage flow path 114 inside the water seal forming portion 110, as will be described later, and the water seal water level W2 is defined. Further, the first drainage channel 112 is configured to define the maximum water level W1 by the top 112c of the trap-shaped channel. The maximum water level W1 is set as the water sealing water level during cleaning.

The second drainage flow path 114 is a bypass flow path that extends from a downward flow path section 112a provided upstream of the top 112c of the first drainage flow path 112 to an outlet flow path section 112d provided downstream of the top 112c. Form. The second drainage flow path 114 has a top portion 114c that forms the highest portion between the inlet portion 114a and the outlet portion 114b, and a second drainage flow path descending portion 114i that extends obliquely downward from the inlet portion 114a toward the downstream side. It is equipped with The inlet portion 114a of the second drainage channel 114 forms a top portion 114c. The second drainage channel 114 defines a water seal level W2 within the water seal forming section 110 by the top portion 114c.

The second flow path cross-sectional area D12 of the second drainage flow path 114 is smaller than the first flow path cross-sectional area D11 of the first drainage flow path 112. Therefore, the second drainage flow path 114 is formed to have a flow resistance greater than that of the first drainage flow path 112 due to the second drainage flow path 114 . The second drainage flow path 114 is configured to provide a seal when an inflow amount of water per unit time that exceeds the second drainage amount per unit time of the constricted portion 130 of the second drainage flow path 114 flows into the water seal forming portion 110. It functions to raise the water level in the water forming part 110 at least to a maximum water level W1 that is higher than the water sealing water level W2 and defined by the first drainage channel 112. That is, the second drainage flow path 114 has a water level in the water seal forming part 110 ranging from a water seal water level W2 in the water seal forming part 110 to a maximum water level (ultrasonic cleaning water level) W1 in the water seal forming part 110 (FIG. 15). It functions as a water level adjustment section that is designed to make it easier to rise up to (see).

Next, with reference to FIGS. 14 and 15, a notification device 30 of a washing area side drainage device 101 according to a second embodiment of the present invention will be described.
The notification device 30 is provided in and around a drainage system 102 that includes a washing area side drainage device 101. The notification device 30 includes a light emitting unit 30a that visually reports the irradiation of the ultrasonic oscillator 26 by emitting light. The light emitting section 30a is, for example, an LED. The light emitting section 30a is formed by arranging LEDs in a ring shape at predetermined intervals and arranging the light emitting direction of the LEDs toward the inside of the flow path. The light emitting section 30a is provided so as to illuminate the inside of the downward flow path section 112a of the water seal forming section 110 with light. The light emitting section 30a is arranged to emit light toward the center of the downward flow path section 112a, and reflected light leaks upward from the downward flow path section 112a. Therefore, when viewed from the entrance side (washing area side) of the water seal forming section 110, the descending flow path section 112a itself gives the impression that it is shining when the lid 122 is removed, and the descending flow path section 112a itself appears to be shining. The inside of the portion 112a can be easily seen. The light-emitting part 30a is an LED that emits blue light, and when the light-emitting part 30a is in a light-emitting state, the flow path lights up in blue, giving the entire washing area side drainage device 101 a sense of luxury and cleanliness.

The light emitting section 30a is attached to the water seal forming section 110. More specifically, the light emitting section 30a is attached near the downward flow path section 112a that descends on the entrance side of the water seal forming section 110. The light emitting section 30a is arranged outside the downward flow path section 112a of the water seal forming section 110 so that the main light emitting direction is inward of the downward flow path section 112a. At this time, the channel wall 132 located at least in the inner part of the water seal forming part 110 in the horizontal direction than the light emitting part 30a is formed as a light transmitting wall that transmits light. In this embodiment, the outer cylindrical member 131 of the water seal forming part 10 to which the light emitting part 30a is attached is arranged inside the outer cylindrical member 131 and is fitted with the outer cylindrical member 131. The inner cylindrical member 133 is made of a material that transmits light, and constitutes the flow path wall 132. Therefore, the light emitting section 30a is attached to the portion of the channel wall 132 that is formed to transmit light. Further, at least the members of the inner portion in the horizontal direction of the light emitting section 30a are formed to transmit light. For example, the cylindrical region A of the channel wall 132 transmits light and the wall surface emits light. The channel wall 132 of this embodiment is formed of the same transparent or translucent resin material as the channel wall 32 of the first embodiment. In addition, as a modification, the notification device 30 may be provided on a wall surface around the drainage system 102, for example, on a wall surface of a bathroom or another adjacent room. As another modification, the light emitting section 30a may be disposed within the inlet section 111 to illuminate the inside of the downward flow path section 112a.

Further, as a modification, the light emitting section 30a may be a display section that displays characters and the like by emitting light.

In the second embodiment, as in the first embodiment, when the light emitting part 30a emits light, light leaks into the washing area floor 104 from the inlet between the lid 122 and the bottom part 104a. ing. The light emitting state of the notification device 30 of the washing area side drainage device 101 according to the second embodiment of the present invention is almost the same as the light emitting state of the notification device 30 of the drainage device 1 according to the first embodiment, so a description thereof will be omitted. Further, the control contents of the washing area side drainage device 101 according to the second embodiment of the present invention are also almost the same as the control contents of the drainage device 1 according to the first embodiment, so the explanation will be omitted.
Furthermore, as a modification of the second embodiment, the light emitting section 30a of the notification device 30 may be attached to the water seal forming section 210 of the bathtub-side drainage device 103 attached to the bottom 105a of the bathtub 105.

Next, a drainage system including a drainage device according to a third embodiment of the present invention will be described with reference to FIGS. 16 and 17. The third embodiment is an example in which the drainage device according to the present invention is applied to a washbasin of a washbasin faucet device. FIG. 16 is a perspective view of a drainage system equipped with a drainage device according to a third embodiment of the present invention. FIG. 17 is a partially enlarged sectional view taken along line XVII-XVII in FIG. 16. In addition, in FIG. 17, in order to explain the internal structure, the internal structure is schematically illustrated by imaginary lines even for channels that are not shown in the cross section of the drainage main body.

Since the drainage system 302 according to the third embodiment has a basic structure similar to the drainage system 2 according to the first embodiment described above, only the points different from the first embodiment will be described for the third embodiment of the present invention. , the same reference numerals are given to the same parts in the drawings, and the description thereof will be omitted. The operation (effect) of the drainage system 302 according to the third embodiment of the present invention is the same as the operation (effect) of the drainage system 2 according to the first embodiment, so a description thereof will be omitted.

The drainage system 302 includes a washbowl 304 that is a water receptacle provided in the washstand, a washbasin faucet device 306 that is a water spout that spouts water or hot water into the washbowl 304, and a washstand that is connected to the bottom 304a of the washbowl 304. A washbowl drainage device 301, which is a drainage device provided, and a drainage channel 8 are provided. The washbowl 304 is not limited to a bowl for a washstand, but includes a handwashing bowl large enough to allow hand washing.

The washbasin faucet device 306 is connected on the upstream side to a water supply channel 9 that is supplied with water from a water supply source (not shown) and a hot water supply channel 11 that is supplied with hot water. The washbasin faucet device 306 includes a hot and cold mixer 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 discharging portion 306b. The water supply channel 9 and the hot water supply channel 11 are connected to the hot and cold water mixing faucet 6a, and a water discharge side flow path 6c extends from the hot and cold water mixing faucet 6a to the water discharge portion 306b through a flow rate sensor 24 which will be described later. The washbasin 304 is formed to discharge water discharged from the washbasin faucet device 306 to the downstream side.

Next, with reference to FIG. 17, a washbowl drainage device 301 according to a third embodiment of the present invention will be described.
First, the washbowl drainage device 301 includes a water seal forming part 310 provided on the downstream side of the bottom 304a of the washbowl 304. The water seal forming section 310 has a flow path formed therein. A part of the water seal forming part 310 is formed by a cylindrical depression part 304b depressed downward from the bottom part 304a. Note that the water seal forming portion 310 may be connected to the bottom portion 304a without using the recessed portion 304b. The water seal forming part 308 is provided on the lower side of the sink 4 and includes a mesh basket storage part 311 which is a hollow part in which a mesh basket is placed, and a trap-shaped flow path provided on the downstream side of the recessed part 304b. It includes a first drainage flow path 312 and a second drainage flow path 314 branched from the first drainage flow path 312. The water seal forming unit 310 drains the water spouted into the wash basin 304, and also stores a part of the spouted water to form a normal water seal at the water seal water level W2. function as a department. Note that a water supply channel separate from the channel from the wash basin 304 may be connected to the water seal forming section 308 . Another water supply channel may be connected to another water source (not shown). The water supplied into the water seal forming section 308 also includes water that flows into the water seal forming section 308 from a water supply flow path that is different from the flow path from the wash basin 304 . Further, the water flowing into the water seal forming section 308 includes water that contains detergent, shampoo, body soap, dirt on the water receiving section, etc., such as domestic wastewater.

The drainage system 302 further includes a lid 322 formed to cover the upper part of the entrance of the mesh basket storage section 311 of the water seal forming section 310, and a lid 322 that is disposed on the flow path in the mesh basket storage section 311 and has a mesh. A mesh basket (not shown), a flow rate sensor 24 that is a detection unit that detects water discharged from the washbasin faucet device 306, and an ultrasonic oscillator 26 that irradiates ultrasonic waves to the water in the water seal forming unit 310. , and a control device 28 that controls ultrasonic irradiation by the ultrasonic oscillator 26.

The lid 322 is provided to be removable from the mesh basket storage section 311. The lid 322 is attached to the top of the mesh basket (not shown) so that the mesh basket 120 is difficult to see from above. The lid 322 forms an inlet between the lid 322 and the entrance at the upper end of the mesh basket storage section 311, which is a gap through which small objects such as water and dirt flow.

A mesh basket (not shown) is arranged at the upstream side of the water seal forming section 310. A mesh basket (not shown) is formed to cover the entire flow path. The upper end of the mesh basket (not shown) is located in the recessed portion 304b. The mesh basket (not shown) allows water to pass through, while keeping small objects such as garbage inside.

The flow rate sensor 24 detects the flow of water supplied to the water seal forming section 310. The flow rate sensor 24 is provided between the hot water mixing faucet 6a and the water spouting part 306b of the washbasin faucet device 306. The flow rate sensor 24 can detect the flow rate of water spouted from the water spouting section 306b of the washbasin faucet device 306 per unit time. In this way, the flow rate sensor 24 can detect that water is being spouted from the water spouting section 306b by detecting the flow rate per unit time. That is, the flow rate sensor 24 functions as a detection section. In this way, the flow rate sensor 24 detects the water spouted from the water spouting section 306b, and therefore can detect the supply of water to the water seal forming section 310.

The ultrasonic oscillator 26 is provided below the downward flow path within the water seal forming section 308 . The ultrasonic oscillator 26 is provided at the bottom of the water seal forming section 308 and is arranged so as to radiate an ultrasonic wave upward.

The control device 28 has an automatic cleaning mode that automatically irradiates the ultrasonic oscillator 26 when the flow rate sensor 24 detects the supply of water to the water seal forming section 310. The start of discharging water from the plug device 306 and the start of ultrasonic cleaning can be automatically linked. Further, the control device 28 further includes a notification mode in which the notification device 30 issues a notification when the flow rate sensor 24 detects the supply of water to the water seal forming section 310. This notification mode of the control device 28 is also a first notification mode in which the notification device 30 notifies execution of ultrasonic irradiation.

The control device 28 further includes a failure determination mode in which a failure of at least one of the ultrasonic oscillator 26 and the control device 28 is determined, and a failure determination mode in which the ultrasonic oscillator 26 or the control device 28 is determined to be malfunctioning. A second notification mode is provided in which the notification device 30 notifies the determination of a failure based on the failure determination mode.

The control device 28 further determines that even if the flow rate sensor 24 detects the supply of water to the water seal forming section 310, a water seal is not formed in the water seal forming section 310 or a predetermined amount of water is supplied. If it is determined that a predetermined amount of water has not been supplied to the water seal forming section 310, the ultrasonic oscillator protection mode is provided in which the ultrasonic oscillator 26 irradiates ultrasonic waves after determining that a predetermined amount of water has been supplied into the water seal forming section 310.
In such an ultrasonic oscillator protection mode, when the control device 28 determines that a water seal is not formed in the water seal forming section 310 because the cumulative amount of water does not exceed the predetermined value B1 (see FIG. 11), In this case, control is performed such that ultrasonic irradiation by the ultrasonic oscillator 26 is not started until the cumulative amount of water exceeds a predetermined value B1. After determining that water has been supplied, in other words, after determining that a water seal has been formed, ultrasonic irradiation by the ultrasonic oscillator 26 is performed.
In such an ultrasonic oscillator protection mode, the control device 28 detects the previous supply of water flow to the water seal forming unit 310 to the current detection of the water flow supply to the water seal forming unit 310. If it is determined that a water seal is not formed in the water seal forming part 310 because the time exceeds the predetermined time T1 which is the first predetermined time, the flow of water to the water seal forming part 310 this time is After the start of detection of the supply of water, control is performed to prevent the ultrasonic oscillator 26 from starting irradiation of ultrasonic waves until a predetermined time T6, which is a second predetermined time such that a water seal is formed, has elapsed, and the predetermined time T6 has elapsed. However, after determining that at least a predetermined amount of water A2 has been supplied into the water seal forming section 10, the ultrasonic oscillator 26 executes ultrasonic irradiation.

Next, with reference to FIGS. 16 and 17, the first drainage flow path 312 and the second drainage flow path 314 of the washbowl drainage device 301 according to the third embodiment of the present invention will be described.
The first drainage channel 312 of the water seal forming part 310 of the drainage system 302 rises diagonally upward toward the downstream side to form a drainage trap with a descending channel section 312a connected below the recessed part 304b. a first drainage passage rising part 312b which is an ascending passage; a top part 312c which is a folded back part between the first drainage passage rising part 312b and the outlet passage part 312d; and a descending passage descending from the top part 12c. and an outlet flow path section 312d. The outlet flow path portion 312d is connected to the drainage flow path 8.

The first drainage channel 312 is a trap-shaped channel that is folded back from the first drainage channel rising section 312b toward the outlet channel section 312d. The outlet flow path portion 312d is connected to the downstream end of the first drainage flow path rising portion 312b and is formed to extend substantially vertically downward. A water seal is formed in the descending flow path portion 312a, the first drainage flow path rising portion 312b, and the second drainage flow path 314 inside the water seal forming portion 308, as described later, and the water seal water level W2 is defined. Further, the first drainage flow path 312 is configured to define the maximum water level W1 by the top portion 312c of the trap-shaped flow path. The maximum water level W1 is set as the water sealing water level during cleaning.

The second drainage flow path 314 forms a bypass flow path extending from a descending flow path portion 312a provided upstream of the top portion 312c of the first drainage flow path 312 to an outlet flow path portion 312d downstream of the top portion 312c. The second drainage flow path 314 includes a second drainage flow path rising portion 314h that rises obliquely upward toward the downstream side from the inlet portion 314a, and a top portion that forms the highest portion between the inlet portion 314a and the outlet portion 314b. 314c. The outlet portion 314b is connected to the side wall of the outlet channel 326. The second drainage channel 314 defines a water seal level W2 in the water seal forming section 308 by the top portion 314c.

The second flow path cross-sectional area D2 of the second drainage flow path 314 is smaller than the first flow path cross-sectional area D1 of the first drainage flow path 312. Therefore, the second drainage flow path 314 is formed to have a flow resistance greater than that of the first drainage flow path 312 due to the constriction portion 330. The second drainage flow path 314 is configured to provide a seal when an inflow amount of water per unit time that exceeds the second drainage amount per unit time of the constricted portion 330 of the second drainage flow path 314 flows into the water seal forming portion 308. It functions to raise the water level in the water forming part 308 at least to a maximum water level W1 that is higher than the water sealing water level W2 and defined by the first drainage flow path 312. That is, the second drainage flow path 314 has a water level in the water seal forming part 310 ranging from a water seal water level W2 in the water seal forming part 210 to a maximum water level (ultrasonic cleaning water level) W1 in the water seal forming part 210 (FIG. 17). It functions as a water level adjustment section that is designed to make it easier to rise up to (see).

Next, with reference to FIG. 17, a notification device 30 of a washbowl drainage device 301 according to a third embodiment of the present invention will be described.
The notification device 30 is provided in and around a drainage system 302 that includes a washbasin drainage device 301. The notification device 30 includes a light emitting unit 30a that visually reports the irradiation of the ultrasonic oscillator 26 by emitting light. The light emitting section 30a is, for example, an LED. The light emitting section 30a is formed by arranging LEDs in a ring shape at predetermined intervals and arranging the light emitting direction of the LEDs toward the inside of the flow path. The light emitting section 30a is provided so as to illuminate the inside of the downward flow path section 312a of the water seal forming section 310 with light. The light emitting section 30a is arranged to emit light toward the center of the downward flow path section 312a, and the light leaks upward from the downward flow path section 312a. Therefore, when viewed from the entrance side (washing area side) of the water seal forming section 310, the descending channel section 312a itself gives the impression that it is shining with the lid 322 removed, and the descending channel section 312a itself appears to be shining. The inside of the portion 312a can be easily seen. The light-emitting part 30a is an LED that emits blue light, and when the light-emitting part 30a is in a light-emitting state, the flow path lights up in blue, giving the entire washbowl drainage device 301 a sense of luxury and cleanliness.

The light emitting section 30a is attached to the water seal forming section 310. More specifically, the light emitting section 30af is attached near the downward flow path section 312a that descends on the entrance side of the water seal forming section 310. The light emitting section 30a is disposed outside the downward flow path section 312a of the water seal forming section 310 and facing inward of the downward flow path section 312a. At this time, the channel wall 332 located at least in the inner part of the water seal forming part 310 in the horizontal direction than the light emitting part 30a is formed as a light transmitting wall that transmits light. A light emitting section 30a is attached to a portion of the channel wall 332 that is formed to transmit light. Further, at least the members of the inner portion in the horizontal direction of the light emitting section 30a are formed to transmit light. For example, the cylindrical region A of the channel wall 332 transmits light and the wall surface emits light. The channel wall 332 of this embodiment is formed of the same transparent or translucent resin material as the channel wall 32 of the first embodiment. In addition, as a modification, the notification device 30 may be provided on a wall surface or the like around the drainage system 2. Further, as a further modification, the light emitting section 30a may be disposed within the recessed portion 304b to illuminate the inside of the downward flow path section 312a.

In the third embodiment, as in the first embodiment, when the light emitting part 30a emits light, light leaks into the washbowl 304 from the inlet between the lid 322 and the bottom part 304a. ing. The light emitting state of the notification device 30 of the washbowl drainage device 301 according to the third embodiment of the present invention is almost the same as the light emitting state of the notification device 30 of the drainage device 1 according to the first embodiment, so a description thereof will be omitted. Furthermore, the control contents of the washbowl drainage device 301 according to the third embodiment of the present invention are also almost the same as the control contents of the drainage device 1 according to the first embodiment, so a description thereof will be omitted.

1 Drainage device 2 Drainage system 4 Sink 4a Bottom 10 Water seal formation part 22 Lid 24 Flow rate sensor 26 Ultrasonic oscillator 28 Control device 30 Notification device 30a Light emitting part 32 Channel wall 101 Washing area side drainage device 102 Drainage system 103 Bathtub side drainage device 104 Washing area floor 104a Bottom part 105a Bottom part 106b Spout part 110 Water seal forming part 122 Lid 132 Channel wall 210 Water seal forming part 301 Wash basin drainage device 302 Drainage system 304 Wash bowl 304a Bottom part 306 Wash faucet device 306b Water discharge part 308 Water seal Forming part 310 Sealing forming part 322 Lid 332 Channel wall

Claims (8)

A drainage device provided below a water receiving part,
a water seal forming part that is provided on the downstream side of the water receiving part, has a flow path formed therein, and forms a water seal in the flow path;
a detection unit that detects the supply of water to the water seal forming unit or the outflow of water from the water seal forming unit;
an ultrasonic oscillator that irradiates ultrasonic waves to the water in the water seal forming section;
a control device that controls irradiation of ultrasonic waves by the ultrasonic oscillator;
and a notification device that notifies the irradiation of ultrasonic waves by the ultrasonic oscillator,
The above control device is
an automatic cleaning mode in which the ultrasonic oscillator irradiates when the detection unit detects the supply of water to the water seal formation unit or the outflow of water from the water seal formation unit;
Notification by the notification device when the detection unit detects the supply of water to the water seal formation unit or the outflow of water from the water seal formation unit, or when the ultrasonic oscillator executes ultrasonic irradiation. A drainage device characterized by comprising a notification mode for performing the following. The drainage device according to claim 1, wherein the notification device is provided in and around a drainage system unit including the drainage device. The drainage device according to claim 1 or 2, wherein the notification device includes a light emitting unit that visually notifies the irradiation of the ultrasonic oscillator. The drainage device according to claim 3, wherein the light emitting section of the notification device is provided so as to illuminate the inside of the water seal forming section with light. The drainage device according to claim 4, wherein the light emitting section of the notification device is attached to the water seal forming section. Further, a lid is formed to cover the upper part of the entrance of the water seal forming part and is removably provided,
The lid is configured such that an inlet is formed between the lid and the bottom of the water receiving portion when attached above the inlet of the water seal forming portion,
Measurement in the area inside the water receiving part near the inlet when the lid is attached above the entrance of the water seal forming part, the lights in the room where the drainage device is installed are turned off, and the light emitting part is emitting light. The illuminance of the light emitted from the water sealing section is such that the illuminance of the light is such that the lid is attached above the entrance of the water seal forming section, the lighting in the room in which the drainage device is installed is turned on, and the light emitting section is not emitting light. The drainage device according to claim 4 or 5, wherein the light emitting section, the lid, or the water seal forming section are configured so that the illuminance of the light measured in the area inside the water receiving section near the entrance is less than or equal to the illuminance of the light. . The light emitting part of the notification device is arranged outside the flow path of the water seal forming part,
The drainage device according to any one of claims 4 to 6, wherein a channel wall located inside the light emitting part of the water seal forming part is formed to transmit light. The drainage device according to any one of claims 4 to 7, wherein the notification mode of the control device is such that the notification device provides notification from at least one second after the start of irradiation by the ultrasonic oscillator until the end of irradiation.

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