JP2019218753A - Drainage system - Google Patents

Abstract

To provide a drainage system capable of improving ultrasonic cleaning performance for performing ultrasonic cleaning up to a predetermined water level higher than a sealed water level and preventing backflow in which water in a main body overflows from an inlet to a water receiver.SOLUTION: A drainage system 1 of the present invention is provided at the bottom of a water receiving part 6 and includes: an inlet part 10 opened to the water receiving part side; a body part 8 which has a water sealing part provided on a downstream side of the inlet part and seals water; an ultrasonic oscillator 16 that oscillates ultrasonic waves to water in the body part; an outlet flow path 22 provided on the downstream side of the body part; water level raising means which raises the water level in the body part 8 by water flowing into the body part to at least a predetermined water level W1 higher than a sealed water level W2 in the rising flow path and equal to or lower than the height of the inlet part 10; and drainage means for draining water flowing into the body part 8 to the outlet flow path 22 so that the water level in the body part 8 does not exceed the predetermined water level W1.SELECTED DRAWING: Figure 8

Description

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

  BACKGROUND ART Conventionally, as shown in Patent Document 1, a drainage device provided on a bottom surface of a sink and provided with an ultrasonic transmitter is known. In this drainage device, when the user tries to clean the drainage portion of the drainage device, the user turns on the switch of the operation unit. By the input operation of the operation unit, the drain valve of the drain unit is closed, and the water supply valve is opened to supply water into the drain unit. Ultrasonic cleaning is performed in a state where water is stored in the drain section, and dirt in the drain section is cleaned.

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

JP-A-2004-324108 JP 2007-285097 A

However, in the above-described conventional drainage device, when the drainage valve and the drainage hole are closed and water is stored in the drainage portion (for example, during ultrasonic cleaning), water is used in the sink that is the water receiving portion. In this case, the water flows from the water receiving portion to the drainage portion, but if the user does not operate the operation portion, the water may overflow from the drainage portion to the water receiving portion. For this reason, the use of water in the water receiving portion during the ultrasonic cleaning is substantially restricted, and there is a problem that the usability of the drainage device is significantly reduced.
Further, in the drainage section, the more water is stored to a level higher than the sealed water level, and the more the ultrasonic cleaning is performed to the upper part of the drainage section, the more easily the water overflows from the drainage section to the water receiving section, and the more water is discharged. The backflow that overflows from the drain to the water receiver is a problem.

  Therefore, the present invention is to improve the ultrasonic cleaning performance of performing ultrasonic cleaning up to a predetermined water level higher than the sealed water level and to prevent backflow in which water in the main body overflows from the inlet to the water receiver. It is an object.

In order to solve the above-mentioned problem, the present invention is a drainage device provided at a bottom portion of a water receiving portion, and an inlet portion opened to the water receiving portion side, and provided at a downstream side of the inlet portion. A main body having a water-sealing portion for forming water sealing, an ultrasonic oscillator for oscillating ultrasonic waves in water in the main body, an outlet flow path provided on the downstream side of the main body, and an inside of the main body. By the inflowing water, the water level in the main body portion is higher than the sealed water level in the water sealing formation portion and at least the predetermined water level not higher than the height of the inlet portion. Draining means for draining water flowing into the main body to the outlet flow path so as not to exceed a predetermined water level.
In the present invention thus configured, by the water level rising means, the water level in the main body part is higher than the sealed water level in the sealed water forming part and equal to or less than the height of the inlet part by the water flowing into the main body part. In a state where the water level in the main body is raised to at least the predetermined water level and the water level in the main body is raised to the predetermined water level, ultrasonic cleaning by the ultrasonic oscillator can be performed to a predetermined water level higher than the sealed water level.
In addition, the water exceeding the predetermined water level is drained to the outlet channel by the drainage unit so that the water level in the main body does not exceed the predetermined water level. Thus, it is possible to prevent the water level in the main body from exceeding the predetermined water level, and the water in the main body from overflowing from the inlet to the water receiver.
Therefore, according to the present invention, both improvement of the ultrasonic cleaning performance of performing ultrasonic cleaning to a predetermined water level higher than the sealed water level and prevention of backflow in which water in the main body overflows from the inlet to the water receiver. can do.

In the present invention, preferably, the water level rising unit is higher than the sealed water level and the predetermined water level while the water level in the main body is raised to the predetermined water level. It is formed so as to reduce the amount of drainage per unit time of water flowing out of the main body to the outlet flow path, and to raise the water level in the main body while flowing water flowing into the main body to the outlet flow path. You.
In the present invention thus configured, since the water level raising means can raise the water level in the main body while causing the water flowing into the main body to flow out to the outlet flow path, the dirt removed by the ultrasonic cleaning is reduced. When the water level rises, it is possible to suppress re-adhesion inside the main body.

In the present invention, preferably, when the water level in the main body reaches the predetermined water level, the amount of water discharged from the main body to the outlet flow path per unit time flows into the main body. It is formed so that the amount of flowing water per unit time is equal to or more than the inflow amount.
In the present invention thus configured, when the water level in the main body reaches the predetermined water level, the drainage means discharges water per unit time from the main body to the outlet flow path. It is formed so that the amount of water flowing into the section is equal to or more than the inflow amount per unit time. Therefore, according to the present invention, when the water level in the main body reaches the predetermined water level, the water level in the main body rises above the predetermined water level even if water further flows into the main body. Can be prevented, and backflow in which water in the main body overflows into the water receiving portion can be prevented.

In the present invention, preferably, the drainage unit changes the water level in the main body to the predetermined water level while water is further flowing into the main body from a state in which the water level in the main body has reached the predetermined water level. It is formed to maintain.
In the present invention configured as described above, the water level in the main body is changed by the drainage unit while the water level in the main body reaches the predetermined water level while the water is further flowing into the main body. It can be maintained at a predetermined water level. Therefore, according to the present invention, the water level in the main body portion can be maintained at the predetermined water level for a relatively long time, and the water level in the main body portion is set to the predetermined water level, and the time during which ultrasonic cleaning can be effectively performed is relatively long. be able to.

In the present invention, preferably, the drainage means includes a second drainage channel formed so that the second drainage amount can be drained to the outlet channel per unit time, and a second drainage amount per unit time larger than the second drainage amount. The first drainage flow path is formed by a first drainage flow path formed so that the first drainage amount can be drained to the outlet flow path, and the first drainage flow path is a rising flow path and a downward flow provided downstream of the rising flow path. And a top part between the ascending flow path and the descending flow path defines the predetermined water level, and the second drainage flow path defines the sealed water level.
In the present invention configured as described above, the first drainage flow path capable of draining the first drainage amount per unit time and the second drainage amount per unit time can be provided without providing a movable portion such as a drainage valve in the main body. The drainage means can be formed by the second drainage channel capable of draining water. Further, a predetermined water level can be defined by the first drainage channel, and a sealed water level can be defined by the second drainage channel. Therefore, the water exceeding the predetermined water level is drained to the outlet channel by the drainage means so that the water level in the main body does not exceed the predetermined water level. Thereby, it is possible to prevent the water level in the main body from exceeding the predetermined water level and the water in the main body from overflowing from the inlet to the water receiver.
Furthermore, since a movable part such as a drain valve is not provided in the main body, the movable part breaks down and water in the main body flows backward to the water receiving part side, and a seal failure occurs in the movable part, so that the inside of the main part is not provided. It is possible to eliminate the possibility that the water level does not rise and the ultrasonic cleaning cannot be sufficiently performed.

In the present invention, preferably, the water level rising means is configured such that an amount of water flowing into the main body portion per unit time exceeds the second drainage amount per unit time of the second drainage flow path. The water flowing into the section is formed so as to raise the water level in the main body to the predetermined water level defined by the first drain passage.
In the present invention configured as described above, the water level raising means can be formed by the first drain passage and the second drain passage without providing a movable part such as a drain valve in the main body. Thereby, the water level rising means is configured to control the amount of the water flowing into the main body portion when the inflow amount of the water flowing into the main body portion per unit time exceeds the second drainage amount per unit time of the second drain passage. However, the water level in the main body can be raised to the predetermined water level defined by the first drain passage.

In the present invention, preferably, an inlet of the second drain passage is provided at a height lower than the top of the first drain passage.
In the present invention thus configured, the water level rising means raises the water level in the main body by the water flowing into the main body to be higher than the sealed water level defined by the inlet of the second drain passage, and When the water level in the main body is raised to the predetermined level, the ultrasonic cleaning can be performed by the ultrasonic oscillator to the predetermined level higher than the sealed water level.

In the present invention, preferably, the predetermined portion of the first drainage channel is provided at a height of the inlet portion of the main body, so that the predetermined water level defined by the first drainage channel is It is the height of the entrance of the main body.
In the present invention configured as described above, the predetermined water level is the height of the inlet of the main body, and the ultrasonic cleaning performance of performing ultrasonic cleaning up to the inlet of the main body higher than the sealed water level is improved. This prevents the water from overflowing from the inlet portion to the water receiving portion and preventing backflow.

In the present invention, preferably, the second drainage channel extends downward from an inlet of the second drainage channel to the outlet channel.
In the present invention configured as described above, when there is water above the entrance of the second drain passage, the second drain passage continues to flow out the water above the entrance of the second drain passage. Can be. Therefore, it is possible to raise the water level in the main body while flowing the water flowing into the main body to the outlet flow path, and to stop the water existing in the main body after the flow of water into the main body is stopped. The water can flow out to the outlet flow path and be lowered to the sealed water level defined by the inlet of the second drain flow path.

In the present invention, preferably, further provided with a net cage provided on the flow path in the main body portion and having a mesh, the predetermined water level is defined at a position higher than the bottom of the net cage, the sealing water level is , Are defined below the net cage.
In the present invention configured as described above, the sealing water level is defined below the above-mentioned net cage, so that the net basket to which dirt and small objects such as garbage easily adhere in the main body is higher than the sealing water level. In a standby state where water does not flow in, the net basket can be easily dried, and propagation of various bacteria and the like can be suppressed. In addition, since the predetermined water level is defined at a position higher than the bottom of the net basket, the net basket to which dirt such as garbage and small objects are easily adhered by ultrasonic cleaning in a state where the water level in the main body part has risen to the predetermined water level. The washing can be performed, the stain on the net basket can be suppressed, and the frequency of cleaning the net basket and the burden of cleaning can be reduced.

In the present invention, preferably, the predetermined water level is defined at an upper part of the net cage.
In the present invention configured as described above, the predetermined water level is defined at the upper part of the net basket, so that the net basket to which dirt and small objects such as garbage are likely to adhere while the water level in the main body part has risen to the predetermined water level. Can be cleaned by ultrasonic cleaning, the stain on the net basket can be suppressed, and the frequency of cleaning the net basket and the burden of cleaning can be reduced.

  ADVANTAGE OF THE INVENTION According to the drainage device of this invention, the improvement of the ultrasonic cleaning performance which performs ultrasonic cleaning to a predetermined water level higher than a sealing water level, and the prevention of the backflow in which the water in a main body overflows from an inlet part to a water receiving part. Can be compatible.

It is the front view which looked at the faucet system provided with the drainage device by one embodiment of the present invention from the front. It is the side view which looked at the faucet system provided with the drainage device by one embodiment of the present invention from the side. FIG. 3 is a sectional view taken along line III-III in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1. FIG. 4 is a partially enlarged cross-sectional view showing a standby state in the drainage device according to the embodiment of the present invention. It is a partial expanded sectional view showing the state where the inflow of water into the main part of the drainage device by one embodiment of the present invention was started. Water further flows into the main body of the drainage device according to the embodiment of the present invention, the inflowing water flows out through the second drainage channel to the outlet channel, and the water level in the rising portion of the first drainage channel. FIG. 6 is a partially enlarged cross-sectional view showing a state in which is raised. FIG. 4 is a partially enlarged cross-sectional view illustrating a state in which water further flows into a main body of the drainage device according to the embodiment of the present invention, and a water level in a first drainage channel reaches a predetermined water level. The inflow of water into the main body of the drainage device according to one embodiment of the present invention is stopped, and the water above the inlet of the second drainage channel is discharged to the outlet channel through the second drainage channel, and It is a partial expanded sectional view showing the state where the water level in the drainage flow channel falls gradually. From the state shown in FIG. 9, the state in which the water above the inlet of the second drainage channel flows out to the outlet channel via the second drainage channel, and the water level in the first drainage channel gradually decreases. It is a partial expanded sectional view shown.

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

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

Next, a drainage device according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIG. 4 is a sectional view taken along the line IV-IV of FIG.
The drainage device 1 is provided on the bottom 6 a of the water receiving section 6. The drainage device 1 includes a main body portion 8, the main body portion 8 having an inlet portion 10 opened to the water receiving portion 6 side, and a first drainage flow which is a trap-shaped flow channel provided downstream of the inlet portion 10. Road 12. The entrance 10 is formed by a part of the bottom 6a being recessed below the bottom surface 6b of the bottom 6a. In addition, a water supply channel different from the channel from the water receiver 6 may be connected to the main body 8. Another water supply flow path is connected to another water supply source (not shown). The water flowing into the main body 8 also includes water flowing into the main body 8 from a water supply flow path different from the flow path from the water receiving section 6. The water flowing into the main body 8 includes water containing any of detergents, shampoos, body soaps, stains on dishes, stains on water receiving portions, and the like, for example, domestic wastewater.

  The drainage device 1 further includes a lid 14 arranged to cover the upper part of the inlet 10, an ultrasonic oscillator 16 that oscillates ultrasonic waves in water in the main body 8, and detects a water level in the main body 8. A water level detection sensor 18, a control unit 20 for controlling the operation of the ultrasonic oscillator 16, an outlet channel 22 provided on the downstream side of the first drainage channel 12 of the main body 8, and a There is provided a net cage 24 provided and having a mesh, and a water seal tube 25 provided below the net basket 24.

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

  The net basket 24 is formed so as to cover the entire flow path below the inlet 10. The net basket 24 is arranged below the entrance 10 inside the depression recessed below the bottom 6a. The upper end of the net basket 24 is located at the entrance 10. The net basket 24 allows water to pass through, while keeping small objects such as trash inside the net basket 24 without passing through.

  The water sealing tube 25 is formed in a tubular shape and extends from near the lower portion of the net basket 24 to near the bottom of the main body portion 8 further below. The lower end of the water seal tube 25 extends below an inlet 26a of a second drain passage 26 described later.

Next, the first drain passage 12 and the second drain passage 26 of the drain device according to the embodiment of the present invention will be described with reference to FIGS.
The first drainage channel 12 of the main body 8 of the drainage device 1 includes a connecting portion 12a connected below the inlet portion 10, an ascending portion 12b that is an ascending channel that rises to form a drain trap, and an ascending portion. It has a top portion 12c which is a folded portion connected to the rising portion 12b of the drain trap between the bottom portion 12b and the descending portion 12d, and a descending portion 12d which is a descending flow path descending from the top portion 12c. The descending portion 12d is connected to the outlet channel 22.
The first drainage channel 12 is a trap-shaped channel that is folded back from the rising portion 12b to the falling portion 12d. Water is formed in the first drain passage 12 of the main body 8 as described later, and the water sealing level W2 is defined. At least a part of the first drainage channel 12 of the main body 8, for example, the rising portion 12 b, is provided on the downstream side of the inlet portion 10 and constitutes a water sealing formation portion that forms water sealing. The first drainage channel 12 defines a predetermined water level W1 (see FIG. 8) by the top 12c of the trap-shaped channel. The predetermined water level W1 is defined at a position higher than the bottom of the net cage 24, for example, at the top of the net cage 24. The predetermined water level W1 may be defined above the net cage 24. Since the top 12c of the first drainage channel 12 is provided at the height of the inlet 10 of the main body 8, the predetermined water level W1 defined by the first drainage channel 12 is equal to that of the inlet 10 of the main body 8. Height. The first drainage channel 12 is formed with a first pipe diameter D1 such that a first drainage amount per unit time larger than a second drainage amount per unit time described later can be drained to the outlet channel 22. The first drain passage 12 is a drain unit and a water level raising unit.

  The drainage device 1 further includes a second drainage channel 26 branched from the first drainage channel 12. The second drain passage 26 extends from the inlet 26a of the second drain passage 26 provided upstream of the top 12c of the first drain passage 12 to the outlet passage 22 provided downstream of the top 12c. Form a flow path. The inlet 26 a of the second drain passage 26 is formed on the wall surface of the connection portion 12 a of the first drain passage 12 outside the water seal tube 25. The inlet 26a forms the highest part of the flow path of the second drain flow path 26. The second drain passage 26 extends substantially linearly downward from the inlet 26 a to the outlet 26 b provided in the outlet passage 22. This inlet 26 a is arranged above the lower end of the water sealing tube 25. The second drain passage 26 defines a sealed water level W2 (see FIG. 5) by an inlet 26a provided upstream of the top 12c of the first drain passage 12. The second drain passage 26 is configured to define the sealed water level W2 by, for example, the highest part of the passage. For example, the middle part of the second drainage flow path 26 or the outlet thereof may constitute the highest part of the flow path so as to define the sealed water level W2. Further, the sealed water level W2 may be defined by a configuration other than the second drain passage 26. The sealed water level W2 is defined below the net cage 24. The sealed water level W2 is located near the center or lower portion of the rising portion 12b, and is located near the center or lower portion of the main body 8. The inlet 26 a of the second drainage channel 26 is provided at a height lower than the top 12 c of the first drainage channel 12. The second drainage channel 26 is formed with a second pipe diameter D2 such that the second drainage amount can be drained to the outlet channel 22 per unit time. The second pipe diameter D2 of the second drain passage 26 is smaller than the first pipe diameter D1 of the first drain passage 12. When the inflow amount of water flowing into the main body 8 per unit time exceeds the second drainage amount per unit time of the second drain passage 26, water flowing into the main body 8 is The water level is raised to a predetermined water level W1 defined by the first drain passage 12. The second drain passage 26 is a water level raising unit and a drain unit.

  The first drainage channel 12 and the second drainage channel 26 serve as drainage means for draining water flowing into the main body 8 to the outlet channel 22 so that the water level in the main body 8 does not exceed the predetermined water level W1. Function. When the water level in the main body part 8 reaches the predetermined water level W1 by the first drainage flow path 12 and the second drainage flow path 26, the drainage means per unit time of water flowing out of the main body part 8 to the outlet flow path 22 Is formed to be equal to or more than the amount of water flowing into the main body 8 per unit time. The drainage means is configured such that the first drainage channel 12 and the second drainage channel 26 allow the water to flow into the main body 8 from the state in which the water level in the main body 8 has reached the predetermined water level W1 with an inflow exceeding the second drainage flow. Further, during the inflow, the water level in the main body 8 is maintained at the predetermined water level W1. The state in which the water level in the main body 8 is maintained at the predetermined water level W1 is a state in which the fluctuation of the water level in the main body 8 is suppressed. The state in which the water level in the main body 8 is maintained at the predetermined water level W1 includes the state in which the water level in the main body 8 is maintained at the predetermined water level W1, and even if the water level in the main body 8 slightly fluctuates. The state in which the water level in the part is substantially maintained near the predetermined water level W1 is included.

  The first drain passage 12 and the second drain passage 26 raise the water level in the main body 8 higher than the sealed water level W2 in the rising portion 12b and the height of the inlet 10 by the water flowing into the main body 8. It functions as a water level raising means for raising the water level to a predetermined water level W1 or less. The water level raising means flows into the main body 8 while the water level in the main body 8 is higher than the sealed water level W2 and rises to the predetermined water level W1 by the first drainage channel 12 and the second drainage channel 26. The amount of water per unit time discharged from the main body 8 to the outlet flow path 22 per unit time is made smaller than the amount of water per inflow per unit time. It is formed so as to raise the water level in the part 8.

  As a modification, instead of the first drain channel 12 and the second drain channel 26, a channel of a main body having a drain trap having a shape different from that of the first drain channel 12 is formed. A drain valve that opens and closes may be provided. The drain valve is electrically connected to the control unit 20 and is automatically controlled by the control unit 20. Further, the opening of the drain valve is controlled by the control unit 20, and the amount of drain water to the flow path downstream of the drain valve is controlled. When water flows into the flow path of the main body, the drain valve is closed or opened in a state where the degree of opening is reduced according to a command from the control unit 20, and the water is raised to a predetermined water level W1. The control unit 20 determines from the water level detection sensor 18 that the water level has reached the predetermined water level W1. In a state where the water level has reached the predetermined water level W1, the ultrasonic oscillator 16 is operated by a command from the control unit 20. When the water level reaches the predetermined water level W1, the drain valve is opened according to a command from the control unit 20 or is in an open state with an opening degree larger than the state in which the opening degree is reduced, and the water is drained to the downstream side. , The water level is maintained or lowered. With the drain valve opened, the amount of water discharged per unit time from the main body to the outlet channel 22 may be set to be equal to or greater than the amount of water per unit time flowing into the main body.

  In this modification, the automatically controlled drain valve raises the water level in the main body by the water flowing into the main body to a level higher than the sealed water level W2 in the rising portion 12b and less than the height of the inlet section 10. It functions as a water level raising means for automatically raising the water level to at least the predetermined water level W1 and a drainage means for discharging water flowing into the main body to the outlet flow path 22 so that the water level in the main body does not exceed the predetermined water level W1. The water level raising means uses a drain valve to raise the water level in the main body portion from the main body portion to the outlet flow more than the inflow amount per unit time while the water level in the main body portion is higher than the sealed water level W2 and rises to the predetermined water level W1. The amount of water flowing out of the passage 22 per unit time is reduced, and the water level of the main body is raised while the water flowing into the main body flows out to the outlet flow passage 22. The water level raising means is configured to raise at least to a predetermined water level W1 by a drain valve. When the water level in the main body reaches the predetermined water level W1 by the drain valve, the amount of water discharged per unit time from the main body to the outlet flow path 22 is reduced per unit time of water flowing into the main body. It is formed so as to have an inflow amount or more. The drainage means is formed by the drain valve so as to maintain the water level in the main body at the predetermined water level W1 from the state in which the water level in the main body has reached the predetermined water level W1 while the water is further flowing into the main body. I have.

  As another modified example, in addition to the first drainage channel 12 and the second drainage channel 26, the rising portion 12b of the first drainage channel 12 above the inlet 26a of the second drainage channel 26, and the descending portion 12d Alternatively, a third drainage channel communicating with the outlet channel 22 may be provided, and a drain valve controlled by a command from the control unit 20 may be provided at the inlet of the third drainage channel. The drain valve is electrically connected to the control unit 20 and is automatically controlled by the control unit 20. When water flows into the flow path of the main body, the drain valve is closed by a command of the control unit 20 or is in an open state in which the opening degree is reduced, and drainage from the third drain flow path is stopped or The water is squeezed to a relatively small amount, and the water is raised to a predetermined water level W1. The control unit 20 determines from the water level detection sensor 18 that the water level has reached the predetermined water level W1. In a state where the water level has reached the predetermined water level W1, the ultrasonic oscillator 16 is operated by a command from the control unit 20. When the water level reaches the predetermined water level W1, the drain valve is opened according to a command from the control unit 20 or is in an open state in which the opening degree is larger than a state in which the opening degree is reduced, and the water is discharged to the third drain passage. The water is drained to the downstream side, and the water level is maintained or lowered. With the drain valve opened, the amount of water discharged per unit time from the main body to the outlet channel 22 may be set to be equal to or greater than the amount of water per unit time flowing into the main body. The first drainage channel 12 and the second drainage channel 26 in this modification may have a smaller pipe diameter than the first drainage channel 12 and the second drainage channel 26 in the above-described embodiment. Such a third drain passage and a drain valve together with the first drain passage 12 and the second drain passage 26 function as a water level raising unit and also function as a drain unit.

  As still another modification, the second drain passage 26 is formed so as to increase the amount of drain water per unit time, and a drain valve controlled by a command of the control unit 20 at an inlet 26 a of the second drain passage 26. May be provided. The drain valve is electrically connected to the control unit 20 and is automatically controlled by the control unit 20. When water flows into the flow path of the main body, the drain valve is closed or opened in a state where the opening degree is reduced according to a command from the control unit 20, and the drainage from the second drain flow path 26 is stopped. Alternatively, the water is squeezed to a relatively small amount, and the water is raised to at least the predetermined water level W1. The water level raising means is configured to raise at least to a predetermined water level W1 by a drain valve. The control unit 20 determines from the water level detection sensor 18 that the water level has reached the predetermined water level W1. In a state where the water level has reached the predetermined water level W1, the ultrasonic oscillator 16 is operated by a command from the control unit 20. When the water level reaches the predetermined water level W1, the drain valve is opened according to a command from the control unit 20 or is in an open state in which the opening degree is larger than a state in which the opening degree is reduced, and the water is drained to the second drain passage. The water is drained downstream from 26, and the water level is maintained or lowered. With the drain valve opened, the amount of water discharged per unit time from the main body to the outlet flow path 22 may be set to be equal to or more than the amount of water per unit time flowing into the main body. The first drainage channel 12 in this modification may have a smaller pipe diameter than the first drainage channel 12 of the above-described embodiment. Such a second drain passage 26 and a drain valve together with the first drain passage 12 function as a water level raising unit and also function as a drain unit.

Next, the operation (operation) of the drainage device according to the above-described embodiment of the present invention will be described with reference to FIGS.
FIG. 5 is a partially enlarged cross-sectional view illustrating a standby state in the drainage device according to an embodiment of the present invention, and FIG. 6 illustrates a state in which water has started flowing into a main body of the drainage device according to one embodiment of the present invention. FIG. 7 is a partially enlarged cross-sectional view. FIG. 7 shows that the water further flows into the main body of the drainage device according to the embodiment of the present invention, and the inflowing water flows out to the outlet flow passage through the second drainage flow passage. FIG. 8 is a partially enlarged cross-sectional view showing a state in which the water level in the rising portion of the first drainage channel rises. FIG. 8 shows that the water further flows into the main body of the drainage device according to the embodiment of the present invention, FIG. 9 is a partially enlarged cross-sectional view showing a state in which the water level in the inside reaches a predetermined water level. FIG. 9 shows that the flow of water into the main body of the drainage device according to the embodiment of the present invention is stopped, The water above is discharged to the outlet channel via the second drain channel, and the first drain FIG. 10 is a partially enlarged cross-sectional view showing a state in which the water level in the flow path gradually decreases. FIG. 10 shows a state in which water above the inlet of the second drain flow path from the state shown in FIG. FIG. 5 is a partially enlarged cross-sectional view showing a state in which the water is discharged to an outlet flow path and the water level in a first drainage flow path gradually decreases. 5 to 10, a portion where water is stored in the main body is illustrated by a dotted line.

  FIG. 5 shows a standby state before water is discharged from the faucet device 4. In the standby state, the water level in the main body 8 is the sealed water level W2 at the rising portion 12b and the connecting portion 12a. Since the water sealing tube 25 extends below the inlet 26a of the second drainage flow channel 26 and extends below the water sealing water level W2, the outlet flow channel 22 and the inlet 10 are pneumatically connected in the standby state, Odor is reliably prevented from rising from the outlet channel 22 to the inlet section 10. In the standby state, the faucet device 4 is in a stopped state, and the ultrasonic oscillator 16 is also stopped.

  As shown in FIG. 6, when water is discharged from the faucet device 4, the water flows from the bottom surface 6 b of the water receiving portion 6 through the lid 14 to the inlet 10 as shown by an arrow F <b> 1. As shown by the arrow F2, the water that has flowed into the inlet portion 10 passes through the net cage 24 and flows down inside the water seal case 25. Next, as shown by an arrow F3, the water flowing out from the lower end of the water seal case 25 is supplied into the connection portion 12a of the first drain passage 12 outside the water seal case 25. As shown by an arrow F4, the water supplied into the connection portion 12a of the first drain passage 12 drains from the inlet 26a of the second drain passage 26 through the second drain passage 26 to the outlet passage 22. Is done. The second drainage channel 26 can drain the second drainage amount to the outlet channel 22 per unit time.

  The second amount of water per unit time of water flowing out of the second drainage channel 26 (or per unit time) is smaller than the amount of water per unit time flowing into the main body unit 8 (or the total amount of per unit time). When the total drainage amount is small, the water cannot completely flow out of the second drain passage 26 and is stored in the main body 8. Therefore, as shown by the arrow F5, the water flowing into the main body 8 is caused to flow through the first drainage channel 12 and the second drainage channel 26 to the outlet channel 22 via the second drainage channel 26. The water level in the rising portion 12b of the first drain passage 12 of the main body 8 is automatically raised.

  As shown by an arrow F6 in FIG. 7, when water further flows into the main body 8, the water flowing into the main body 8 flows through the second drainage flow path 26 as shown by an arrow F7 in the outlet flow path. 22 and at the same time, as shown by an arrow F8, the water level in the rising portion 12b of the first drain passage 12 of the main body 8 is raised.

  As shown by an arrow F9 in FIG. 8, when water further flows into the main body 8, the water level in the rising portion 12b of the first drainage channel 12 is determined by the top 12c of the first drainage channel 12. The water level is raised to W1. In a state where the water level in the first drainage channel 12 has reached the predetermined water level W1, the water flowing into the main body 8 flows into the outlet channel 22 through the second drainage channel 26 as shown by an arrow F10. At the same time, it flows out from the top part 12c of the first drainage flow path 12 to the descending part 12d as shown by the arrow F11.

  As shown in FIG. 8, even if the water level in the first drainage channel 12 reaches the predetermined water level W <b> 1 and the water further flows into the main body 8 with an inflow exceeding the second drainage amount, the main body 8 Is maintained at a predetermined water level W1. At this time, the predetermined water level W1 is the height of the entrance 10 and is located above the net basket 24. Therefore, a channel portion at a height lower than the inlet portion 10 of the main body 8 to which dirt easily adheres, for example, the inlet portion 10, a net basket 24, a water bottle 25, a second drain channel 26, and a first drain channel 12 The connection portion 12a, the rising portion 12b, the top portion 12c, and the like are substantially immersed in water. The control unit 20 determines from the water level detection sensor 18 that the water level has reached the predetermined water level W1 that has risen to the inlet 10. When the control unit 20 operates the ultrasonic oscillator 16 in a state where the water level is the predetermined water level W1, ultrasonic cleaning can be performed on substantially the entire main body unit 8 and dirt in the main body unit 8 easily adheres. Ultrasonic cleaning can be performed on the flow path portion, for example, the inlet portion 10 and the net cage 24.

Thus, the water flowing into the main body 8 is drained to the outlet flow path 22 by the first drain flow path 12 and the second drain flow path 26 so that the water level in the main body 8 does not exceed the predetermined water level W1. Let me. Thereby, it is possible to prevent the water level in the main body 8 from exceeding the predetermined water level W1, and the water in the main body 8 from overflowing from the inlet 10 to the bottom surface 6b of the water receiver 6.
In the case where the inflow amount of water per unit time exceeding the second drainage amount per unit time of the second drainage channel 26 continues to flow into the main body 8, the inflow amount per unit time of the second drainage channel 26 As long as the total value of the second drainage amount per unit time and the first drainage amount per unit time of the first drainage channel 12 is not exceeded, the rise of the water level in the main body is controlled between the sealed water level W2 and the predetermined water level W1. can do. In addition, the total value of the second drainage amount per unit time of the second drainage channel 26 and the first drainage amount per unit time of the first drainage channel 12 is determined in the normal use mode of the faucet device 4. Is set so as not to exceed the total value.

  Furthermore, in the present embodiment, the user does not need to close the drain valve or the like provided in the conventional drain channel, and the water is supplied into the main body 8 so that the first drain channel 12 and the Based on the configuration of the second drain passage 26, the water level in the main body 8 automatically reaches the predetermined water level W1, and the ultrasonic cleaning can be automatically performed up to the inlet 10 and the net basket 24.

  As shown in FIGS. 9 and 10, when the flow of water into the main body 8 is stopped or the flow rate of the water is reduced, the first drain passage 12 and the second drain passage as indicated by an arrow F12. 26, the water above the inlet 26a of the second drainage channel 26 flows out to the outlet channel 22 via the second drainage channel 26, and as shown by arrows F13 and F14, the first drainage channel 12 The water level of the connecting portion 12a and the rising portion 12b gradually decreases. When the water level is above the inlet 26a, the second drain passage 26 continues to drain the second drain amount per unit time.

  As shown in FIG. 5, when the inflow of water into the main body portion 8 is stopped and the water level of the connecting portion 12 a and the rising portion 12 b of the first drainage channel 12 decreases to the inlet 26 a of the second drainage channel 26, 2 The outflow of water from the drainage channel 26 ends, and the drainage device 1 returns to the standby state. At this time, the water level in the main body 8 is the sealed water level W2.

According to the drainage device 1 according to the embodiment of the present invention described above, the water level rising means raises the water level in the main body portion 8 higher than the sealed water level W2 in the rising portion 12b by the water flowing into the main body portion 8. In addition, in a state where the water level in the main body 8 is raised to the predetermined water level W1 at least up to the predetermined water level W1 equal to or lower than the height of the inlet portion 10, the ultrasonic oscillator 16 uses the ultrasonic oscillator 16 to the predetermined water level W1 higher than the sealed water level W2. Can be sonicated.
In addition, water exceeding the predetermined water level W1 is drained to the outlet channel 22 by the drainage means so that the water level in the main body 8 does not exceed the predetermined water level W1. Thereby, it is possible to prevent the water level in the main body 8 from exceeding the predetermined water level W1, and the water in the main body 8 from overflowing from the inlet 10 to the water receiver 6.
Therefore, according to the present invention, the ultrasonic cleaning performance for performing ultrasonic cleaning to a predetermined water level W1 higher than the sealed water level W2 is improved, and water in the main body 8 overflows from the inlet 10 to the water receiver 6. The prevention of backflow can be achieved at the same time.

  Further, according to the drainage device 1 according to one embodiment of the present invention, the water level raising means can raise the water level in the main body 8 while causing the water flowing into the main body 8 to flow out to the outlet channel 22. Therefore, it is possible to prevent the stains removed by the ultrasonic cleaning from re-adhering to the main body 8 when the water level rises.

  Furthermore, according to the drainage device 1 according to one embodiment of the present invention, when the water level in the main body portion 8 reaches the predetermined water level W1, the drainage means is configured so that the unit time of the water flowing out of the main body portion 8 to the outlet channel 22 is reduced. The amount of drainage per unit is set to be equal to or more than the amount of water flowing into the main body 8 per unit time. Therefore, according to the present invention, when the water level in the main body 8 reaches the predetermined water level W1, even if water further flows into the main body 8, the water level in the main body 8 exceeds the predetermined water level W1. As a result, it is possible to prevent the water in the main body 8 from overflowing into the water receiving portion 6 and prevent the water from flowing back.

  Further, according to the drainage device 1 according to one embodiment of the present invention, while the water is further flowing into the main body 8 from the state where the water level in the main body 8 has reached the predetermined water level W1 by the drainage means. The water level in the main body 8 can be maintained at the predetermined water level W1. Therefore, according to the present invention, the water level in the main body 8 can be maintained at the predetermined water level W1 for a relatively long time, and the ultrasonic cleaning can be effectively performed with the water level in the main body 8 being the predetermined water level W1. The time can be relatively long.

  Furthermore, according to the drainage device 1 according to one embodiment of the present invention, the first drainage channel 12 capable of draining the first drainage per unit time without providing a movable portion such as a drainage valve in the main body 8. The drainage means can be formed by the second drainage channel 26 that can drain the second drainage amount per unit time. Further, the predetermined water level W1 can be defined by the first drainage channel 12, and the sealed water level W2 can be defined by the second drainage channel 26. Therefore, the water exceeding the predetermined water level W1 is drained to the outlet channel 22 by the drainage means so that the water level in the main body 8 does not exceed the predetermined water level W1. Accordingly, it is possible to prevent the water level in the main body 8 from exceeding the predetermined water level W1, and the water in the main body 8 from overflowing from the inlet 10 to the water receiver 6. Furthermore, since a movable portion such as a drain valve is not provided in the main body portion 8, the movable portion breaks down and water in the main body portion 8 flows back to the water receiving portion side, and a seal failure occurs in the movable portion. As a result, the water level in the main body 8 is not raised, and the possibility that the ultrasonic cleaning cannot be sufficiently performed can be eliminated.

  Further, according to the drainage device 1 according to the embodiment of the present invention, the water level is determined by the first drainage channel 12 and the second drainage channel 26 without providing a movable portion such as a drain valve in the main body 8. A lifting means can be formed. Thereby, the water level rising unit flows into the main body 8 when the flow rate of the water flowing into the main body 8 per unit time exceeds the second drainage amount per unit time of the second drain passage 26. The water can raise the water level in the main body 8 to a predetermined water level W1 defined by the first drainage channel 12.

  Further, according to the drainage device 1 according to one embodiment of the present invention, the water level raising means regulates the water level in the main body 8 by the water flowing into the main body 8 by the inlet of the second drainage channel 26. Rises to a predetermined water level W1 that is higher than the sealed water level W2 and equal to or lower than the height of the inlet portion 10, and in a state where the water level in the main body 8 rises to the predetermined water level W1, exceeds the predetermined water level W1 higher than the sealed water level W2. Ultrasonic cleaning by the ultrasonic oscillator 16 can be performed.

  Furthermore, according to the drainage device 1 according to one embodiment of the present invention, the predetermined water level W1 is set to the height of the inlet 10 of the main body 8, and the ultrasonic cleaning is performed up to the inlet 10 of the main body 8 higher than the sealed water level W2. The improvement of the ultrasonic cleaning performance and the prevention of the backflow in which the water in the main body 8 overflows from the inlet 10 to the water receiver 6 can be achieved.

  Furthermore, according to the drainage device 1 according to one embodiment of the present invention, the second drainage channel 26 is located above the entrance of the second drainage channel 26 when there is water above the entrance of the second drainage channel 26. Water can continue to drain. Therefore, the water level in the main body 8 can be raised while the water flowing into the main body 8 flows out to the outlet flow path 22, and after the inflow of water into the main body 8 is stopped, the water in the main body 8 is stopped. Is discharged to the outlet flow path 22, and it can be lowered to the sealed water level W2 defined by the inlet of the second drain flow path 26.

  Further, according to the drainage device 1 according to the embodiment of the present invention, since the sealed water level W2 is defined below the net basket 24, the net to which dirt such as dust and small objects easily adhere in the main body portion 8. The car 24 can be disposed above the sealed water level W2, and the net basket 24 can be easily dried in a standby state where no water flows in, so that propagation of germs and the like can be suppressed. Further, since the predetermined water level W1 is defined at a position higher than the bottom surface of the net cage 24, the net basket to which dirt such as dust and small objects are liable to adhere in a state where the water level in the main body 8 has risen to the predetermined water level W1. 24 can be cleaned by ultrasonic cleaning, the contamination of the net cage 24 can be suppressed, and the frequency of cleaning the net basket 24 and the burden of cleaning can be reduced.

  Furthermore, according to the drainage device 1 according to the embodiment of the present invention, since the predetermined water level W1 is defined at the upper part of the net basket 24, the water level in the main body 8 rises to the predetermined water level W1, and the waste water or the like is removed. The net basket 24 to which dirt and small objects are likely to adhere can be cleaned by ultrasonic cleaning, thereby suppressing the stain on the net basket 24 and reducing the frequency of cleaning the net basket 24 and the burden of cleaning. it can.

1: drainage device 6: water receiving portion 6a: bottom portion 6c: bottom surface 8: main body portion 10: inlet portion 12: first drainage flow channel 12c: top portion 16: ultrasonic oscillator 22: outlet flow channel 24: net basket 26: first 2 drainage channel 26a: inlet 26b: outlet W1: predetermined water level W2: sealed water level

Claims (11)

A drainage device provided at the bottom of the water receiving portion,
A main body having an inlet portion opened to the water receiving portion side and a water seal forming portion provided on the downstream side of the inlet portion and forming a water seal,
An ultrasonic oscillator that oscillates ultrasonic waves into water in the main body,
An outlet channel provided downstream of the main body,
By water flowing into the main body, a water level in the main body portion is higher than a sealed water level in the water sealing formation portion and at least a water level raising means that rises to a predetermined water level equal to or lower than the height of the inlet portion,
Drainage means for draining water flowing into the main body to the outlet channel so that the water level in the main body does not exceed the predetermined water level.   The water level raising means is configured to raise the water level in the main body from the main body to the outlet flow more than the amount of water flowing into the main body per unit time while raising the water level higher than the sealed water level to the predetermined water level. 2. The water supply device according to claim 1, wherein the amount of water per unit time flowing out of the road is reduced, and the water level in the main body is raised while the water flowing into the main body flows out into the outlet flow path. 3. Drainage equipment.   When the water level in the main body reaches the predetermined water level, the drainage means discharges water per unit time from the main body to the outlet channel per unit time of water flowing into the main body. The drainage device according to claim 1, wherein the drainage device is formed so as to have an inflow amount or more.   The drainage means is formed so as to maintain the water level in the main body at the predetermined water level while water is further flowing into the main body from a state in which the water level in the main body has reached the predetermined water level. The drainage device according to claim 3, which is provided. A second drainage channel formed so that the second drainage amount can be drained to the outlet channel per unit time;
A first drainage channel formed to be able to drain a first drainage volume per unit time larger than the second drainage volume to the outlet channel,
The first drain flow path is a flow path including an ascending flow path and a descending flow path provided downstream of the ascending flow path, and the first drainage flow path is defined by a top portion between the ascending flow path and the descending flow path. Regulate the water level,
The drainage device according to claim 3, wherein the second drainage channel defines the sealed water level.   The water level rising means is configured such that the amount of water flowing into the main body portion per unit time exceeds the second drainage amount per unit time of the second drain passage, whereby the water flowing into the main body portion is The drainage device according to claim 5, wherein the drainage device is formed to raise a water level in the main body to the predetermined water level defined by the first drainage channel.   The drainage device according to claim 6, wherein an inlet of the second drainage channel is provided at a height lower than the top of the first drainage channel.   The top of the first drainage channel is provided at the height of the inlet of the main body, so that the predetermined water level defined by the first drainage channel is equal to the height of the inlet of the main body. The drainage device according to claim 7, wherein the drainage device has a height.   The drainage device according to claim 8, wherein the second drainage channel extends downward from an inlet of the second drainage channel to the outlet channel. Further, a net basket provided on the flow path in the main body and having a mesh,
The predetermined water level is defined at a position higher than the bottom of the net basket,
The drainage device according to any one of claims 1 to 9, wherein the sealed water level is defined below the net cage.   The drainage device according to claim 10, wherein the predetermined water level is defined at an upper part of the net cage.

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