JP5496530B2 - Drainage equipment - Google Patents

Description

  The present invention relates to a drainage device.

  Patent Document 1 discloses a conventional drainage device. The conventional drainage device is provided with a drainage trap into which drainage from a washing place and a bathtub adjacent to the washing place flows. The drain trap has a first inlet and a second inlet. The first inflow port is communicated with a washing ground drain port penetrating a bottom surface of a drainage basin provided in the washing ground. The 2nd inflow port is connected to the bathtub drainage hole penetrated by the bottom face of the bathtub via the bathtub drainage channel. Below the first inflow port, an inflow chamber is provided in which a vortex is formed by the water flow of the bathtub drainage flowing from the second inflow port. A hair catcher is detachably accommodated in the inflow chamber through a washroom drain. The inflow chamber communicates with an outflow chamber having an outflow port.

  In this drainage device, when draining the remaining hot water in the bathtub, the bathtub drainage flows from the bathtub drainage port into the inflow chamber of the drainage trap through the bathtub drainage channel and the second inlet. Then, in the inflow chamber, the water level rises while a vortex is formed by the water flow. The hair entangled with the hair catcher by this vortex is peeled off from the hair catcher and gathered in the center of the hair catcher. For this reason, the hair etc. in a hair catcher can be easily discarded only by taking out a hair catcher from an inflow chamber, and inverting up and down. Further, since the hair or the like is peeled off from the hair catcher, the hair catcher is prevented from being blocked by the hair or the like, and the drainage can flow well in the inflow chamber.

JP 2007-2111579 A

  However, in the above conventional drainage device, when the remaining hot water in the bathtub is small and the water level in the bathtub is low, the flow rate per unit time of the bathtub drainage flowing into the inflow chamber from the second inlet becomes small, and the water flow is reduced. Momentum weakens. Accordingly, the momentum of the vortex formed in the inflow chamber is weakened, and the rise in the water level in the inflow chamber is also reduced. For this reason, the hair entangled with the hair catcher may not be peeled off from the hair catcher and may not be collected in the center of the hair catcher. If the hair, etc., entangled with the hair catcher is not peeled off from the hair catcher and cannot be collected in the center of the hair catcher, it takes time and effort to throw away the hair, etc., entangled with the hair catcher. In addition, the hair part entangled with the hair catcher may block the net part and the drainage may not flow well in the inflow chamber.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the drainage device which is easy to maintain and can perform drainage favorably.

The drainage device of the present invention includes a first inflow port that can communicate with a washroom drainage port that is provided in a bottom surface of a drainage basin provided in a washroom, and a bathtub drainage port that is provided in a bottom surface of a bathtub adjacent to the washroom. A second inflow port that can be communicated with each other via a bathtub drainage channel, an inflow chamber that is continuously provided below the first inflow port, into which bathtub drainage flows from the second inflow port, A drainage device comprising a drainage trap having a hair catcher that is detachably housed in the inflow chamber via the first inflow port, and an outflow chamber that communicates with the inflow chamber and is provided with an outflow port. And
A communication path that allows the bathtub and the inflow chamber to communicate with each other, and a pump that is provided in the communication path and allows the bathtub drainage to flow into the inflow chamber .
The communication path is communicated with the bathtub drainage channel, and the bathtub drainage discharged from the pump is joined along the direction in which the bathtub drainage discharged from the bathtub drainage flows down in the bathtub drainage channel. To do.

  In this drainage device, the flow rate per unit time of the bathtub drainage flowing into the inflow chamber can be increased by driving a pump provided in the communication path that connects the bathtub and the inflow chamber of the drain trap. For this reason, even when there is little remaining hot water in a bathtub and the water level in a bathtub is low, the momentum of the water flow of the bathtub waste_water | drain flowing into an inflow chamber can be strengthened. Thereby, while strengthening the momentum of the water flow of an inflow chamber, a strong vortex can be generated and the water level in an inflow chamber can be raised favorably. Therefore, the hair entangled with the hair catcher can be surely peeled off and collected in the center of the hair catcher. For this reason, the hair etc. in a hair catcher can be easily discarded only by taking out a hair catcher from an inflow chamber, and inverting up and down. Further, since the hair catcher peels off the hair and the like, the net part is not blocked and the drainage can flow well in the inflow chamber.

  Therefore, the drainage device of the present invention is easy to maintain and can drain well.

A circulation path that is attached so as to allow communication between a suction port and a spout that are provided in the bathtub, and a branch path that is branched from the circulation path and communicated with the inflow chamber, wherein the pump includes the branch path more disposed upstream the circulation path of the communication passage may be configured the circulation path that is communicated with the suction port and the said branch path. In this case, the pump can be used for the purpose of flowing the bathtub drainage into the inflow chamber of the drain trap and the purpose of circulating hot water in the bathtub (for example, the circulation pump of the bubble generating device). Thus, a plurality of functions can be realized by one pump, and the bathroom can be used more comfortably. In addition, by using the pump of the bubble generator attached to the bathtub, it is possible to easily install the drainage device without requiring a space for installing a separate pump for use only in the drainage device or installing it. be able to.

  A switching valve may be provided at a branch portion between the circulation path and the branch path. In this case, since the remaining hot water can be caused to flow into the inflow chamber of the drain trap without circulating the remaining hot water in the bathtub, the flow rate per unit time of the bath drainage flowing into the inflow chamber can be increased. That is, the momentum of the water flow of the bathtub drainage flowing into the inflow chamber can be increased, the momentum of the vortex flow can be increased, and the water level in the inflow chamber can be raised satisfactorily. For this reason, while being able to peel off the hair entangled in the hair catcher reliably, it can be put together in the center of the hair catcher. Therefore, the hair in the hair catcher can be easily discarded simply by removing the hair catcher from the inflow chamber and inverting it upside down. In addition, since the hair catcher is surely peeled off, the net portion is not blocked and the drainage can flow well in the inflow chamber.

Wherein the tub drain passage communicating passage is communicated, to merge the bath waste water is the tub drained discharged from the tub drain outlet is discharged from the pump along a direction flowing down the tub drainage channel. In this case, since the bathtub drainage discharged from the pump merges in the same direction with the bathtub drainage flowing down the bathtub drainage channel, the momentum of the bathtub drainage flowing into the inflow chamber from the second inlet is increased. be able to. As a result, the momentum of the vortex flow in the inflow chamber can be increased, and the water level in the inflow chamber can be increased satisfactorily. For this reason, while being able to peel off the hair entangled in the hair catcher reliably, it can be put together in the center of the hair catcher. Therefore, the hair in the hair catcher can be easily discarded simply by removing the hair catcher from the inflow chamber and inverting it upside down. In addition, since the hair catcher is surely peeled off, the net portion is not blocked and the drainage can flow well in the inflow chamber.

A first inflow port that can communicate with a wash basin drain port provided in a bottom surface of a drainage basin provided in a wash basin and a tub drain port provided in a bottom surface of a tub adjacent to the wash basin through a bathtub drain channel A second inflow port that can communicate, an inflow chamber that is continuously provided below the first inflow port, and into which the bathtub drainage flows from the second inflow port, and the wash basin drain port and the first inflow port. A drainage device having a drainage trap having a hair catcher detachably housed in the inflow chamber and an outflow chamber in communication with the inflow chamber and through which an outflow port is formed, the drain and the inflow chamber. A communication path capable of communicating with the chamber, and a pump provided in the communication path for allowing the bathtub drainage to flow into the inflow chamber, wherein the bathtub drainage port is opened, and the bathtub drainage from the second inflow port. In the initial stage of drainage flowing into the inflow chamber During the set time the pump, be driven. In this case, only in the initial stage of drainage, the flow rate per unit time of the bathtub drainage flowing from the second inlet into the inflow chamber can be increased. Thereby, in the initial stage of drainage, the momentum of the vortex in the inflow chamber can be strengthened, and the hair entangled with the hair catcher can be efficiently peeled off. Moreover, energy saving can be aimed at by stopping the drive of a pump after that.

  Moreover, in order to collect the hair and the like peeled off from the hair catcher by eddy current, it is preferable to lengthen the inflow time of the bathtub drainage flowing into the inflow chamber and form the vortex for a long time. By stopping the pump drive after the set time has elapsed, the flow rate per unit time of the bathtub drainage flowing into the inflow chamber can be reduced, and the time for the bathtub drainage to flow into the inflow chamber can be lengthened. Can be put together reliably. For this reason, the hair etc. in a hair catcher can be easily discarded only by removing a hair catcher from an inflow chamber, and inverting up and down.

  In addition, when the drainage resistance of the pipe connected downstream of the drainage trap is large, if the pump is continuously driven, the bathtub drainage cannot be completely discharged from the drainage trap and may overflow from the drainage basin to the washing place. Even in such a case, it is possible to prevent the bathtub drainage from overflowing from the drainage basin to the washing place by stopping the pump after being driven only for the set time in the initial stage of drainage.

  The bathtub drainage channel is provided with a drainage sensor that detects bathtub drainage discharged from the bathtub drainage port, and the pump can be driven when the drainage sensor detects bathtub drainage. In this case, when the remaining hot water is actually discharged from the bathtub, the pump is driven. For this reason, it is possible to prevent the pump from being driven in a state where there is no remaining hot water in the bathtub.

It is the schematic which shows the bathroom in which the drainage apparatus of the Example was integrated. It is a schematic diagram which shows the structure of the drainage apparatus of an Example. It is a longitudinal cross-sectional view of the drain trap which concerns on the drainage apparatus of an Example. It is a cross-sectional view of the drain trap concerning the drainage device of an example. It is a cross-sectional view of the hair catcher according to the drainage device of the example.

  Hereinafter, embodiments embodying the drainage device of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the drainage device of the embodiment includes pipes 21, 22, and 23, and pipes 22 and 23 that form drainage traps 10, communication passages that connect the bathtub 2 and the drainage trap 10. And a connected pump device 30. This drainage device is assembled in a bathroom in which a washing place 1 and a bathtub 2 are provided adjacent to each other.

  The washing place 1 is provided with a drainage basin 40 for collecting the washing place drainage. The drainage basin 40 is formed by recessing a part of the washing place 1 into a rectangular parallelepiped shape. On the bottom surface of the drainage basin 40, a washing ground drainage port 41 penetrating in the vertical direction is provided. A removable cover 42 is installed in the upper opening of the drainage basin 40. The washing ground drainage can flow from the peripheral portion of the cover 42 into the drain 40.

  A bathtub drainage port 50 to which a drain plug device 51 is attached is provided through the bottom surface of the bathtub 2. The drain plug device 51 is electrically driven via the control device 60 by operating the open / close switch 61 and can open and close the bathtub drain port 50. Although not shown, the open / close switch 61 is attached to the upper edge of the bathtub 2 or the like.

  As shown in FIG. 3, the drain trap 10 includes a first inflow port 11, a second inflow port 12, an inflow chamber 13, a hair catcher 14, and an outflow chamber 15. The first inflow port 11 opens in a circular shape facing upward. A cylindrical fastening member 11 </ b> A is screwed into the inner peripheral surface of the first inlet 11. A ring-shaped flange extending outward is formed at the upper end of the fastening member 11A. The peripheral edge portion of the washing ground drain port 41 and the packing P are sandwiched between the flange and the upper surface of the drain trap 10 in which the first inlet port 11 is formed, and the fastening member 11A is the inner peripheral surface of the first inlet port 11. Screwed into. In this manner, the drain trap 10 is attached to the drainage basin 40 in a state where the first inlet 11 is communicated with the washing ground drain port 41. As shown in FIG. 1, the second inlet 12 is communicated with the bathtub drain 50 through the first pipe 21. A part of the first pipe 21 constitutes a communication passage and a bathtub drainage channel.

  As shown in FIGS. 3 and 4, the inflow chamber 13 is provided continuously below the first inflow port 11. The side surface portion 13W of the inflow chamber 13 is formed in a cylindrical shape. The second inflow port 12 communicates with the orifice 12J formed in the side surface portion 13W of the inflow chamber 13 through the introduction path 12R. The orifice 12J is formed in a slit shape extending in the vertical direction. The introduction path 12R extends in the tangential direction of the side surface portion 13W so that the bathtub drainage flows along the inner peripheral surface of the side surface portion 13W. For this reason, the bathtub wastewater that has flowed into the introduction path 12R from the second inlet 12 flows out from the orifice 12J into the inflow chamber 13 and flows so as to rotate along the inner peripheral surface of the side surface portion 13W. In this way, a vortex is formed in the inflow chamber 13 by the water flow of the bathtub drainage that has flowed into the inflow chamber 13.

  The hair catcher 14 is detachably housed in the upper part of the inflow chamber 13 from the inside of the drainage basin 40 through the washing ground drain port 41 and the first inflow port 11. The hair catcher 14 has a net 14A for capturing hair and the like inside, and a grip 14B extending upward. 14 A of net | network parts are formed in the reverse bell shape. The hair catcher 14 is accommodated in the inflow chamber 13 so that the bottom surface of the mesh portion 14A is positioned above the water surface L of the sealing portion H described later.

  The side surface portion 13W of the inflow chamber 13 has a communication portion 13A that opens along the lower end on the facing side of the orifice 12J. The outflow chamber 15 is provided adjacent to the inflow chamber 13 and communicates with the inflow chamber 13 through the communication portion 13A. The outflow chamber 15 has an outflow port 16 penetrating the upper side surface. For this reason, the bathtub drainage and washroom drainage that have flowed into the drain trap 10 stay in the drain trap 10. Thereby, the communication portion 13 </ b> A is sealed with water, and the sealed portion H is formed in the drain trap 10. A pipe 4 communicating with an outdoor pipe is connected to the outlet 16.

The drain trap 10 has an intake pipe 17 having a lower end opened in the sealed portion H of the outflow chamber 15 and an upper end opened in the upper portion of the drainage basin 40. When a negative pressure is generated downstream from the sealed water portion H and the sealed water is sucked, air is sucked from the upper part in the drainage basin 40 through the intake pipe 17. For this reason, even when a negative pressure is generated downstream of the sealed water portion H , it is possible to prevent the sealed water in the sealed water portion H from being completely sucked and causing the sealed water to run out.

  As shown in FIG. 2, the first pipe 21 connected to the second inlet 12 of the drain trap 10 is provided with a drain sensor 52 that detects bathtub drain discharged from the bathtub drain 50. When the drainage sensor 52 detects bathtub drainage discharged from the bathtub drainage port 50, the drainage sensor 52 transmits a drainage detection signal to the control device 60.

  A jet nozzle 3 is provided on the side surface of the bathtub 2. The jet nozzle 3 has a suction port 3A that opens toward the bathtub 2 and a jet port 3B that opens toward the bathtub 2 at the center of the suction port 3A. The suction port 3A and the jet port 3B are connected by a third pipe 23 that constitutes a circulation path.

  The pump device 30 includes a pump 31 and a switching valve 32 communicated with the discharge port side of the pump 31. The inflow port of the pump 31 is connected to an upstream side pipe 23 </ b> A of the third pipe 23 connected to the suction port 3 </ b> A of the jet nozzle 3. A downstream pipe 23 </ b> B of the third pipe 23 connected to the jet outlet 3 </ b> B of the jet nozzle 3 is connected to one outlet of the switching valve 32. As described above, the jet nozzle 3, the third pipe 23, the pump 31, and the switching valve 32 constitute a circulation path capable of circulating hot water in the bathtub 2.

  A second pipe 22 is connected to the other outlet of the switching valve 32. As shown in FIGS. 1 to 3, the downstream end of the second pipe 22 is connected to the corner portion of the first pipe 21. More specifically, the second pipe 22 is arranged so that the outflow direction of the bathtub drainage flowing out from the downstream end of the second pipe 22 is the same direction as the first pipe 21 extending toward the second inlet 12 of the drain trap 10. It is connected to the first pipe 21. Thereby, bathtub drainage joins from the 2nd piping 22 along the direction in which bathtub drainage flows down in the 1st piping 21 inside.

  The drive control of the pump 31 and the switching control of the switching valve 32 are performed by the control device 60. The control device 60 has an operation unit (not shown) separately from the open / close switch 61 of the drain plug device 51. When the operation unit is operated in a state where hot water is stored in the bathtub 2, the control device 60 drives the pump 31 and switches the switching valve 32 to communicate with one outlet side. Thereby, the hot water in the bathtub 2 circulates. At this time, if the jet outlet 3B of the jet nozzle 3 is communicated with an air intake port (not shown), air is sucked from the air intake port, and a jet flow mixed with bubbles is jetted from the jet nozzle 3B of the jet nozzle 3 into the bathtub 2. Can be made.

  Further, when receiving the drainage detection signal from the drainage sensor 52, the control device 60 drives the pump 31 for a set time (10 to 15 seconds) and switches the switching valve 32 to communicate with the other outflow side. . Thereby, the remaining hot water (tub drainage) in the bathtub 2 is sucked from the suction port 3A, and the upstream pipe 23A of the third pipe 23, the pump device 30, the second pipe 22, the first pipe 21, and the second inlet 12 are connected. Through the inflow chamber 13 of the drain trap 10.

  In the bathroom in which the drainage device configured as described above is assembled, the remaining hot water in the bathtub 2 is discharged as described below.

  When the open / close switch 61 is operated, the drain plug device 51 is opened by the control device 60. Then, remaining hot water (tub drainage) is discharged from the bathtub drain outlet 50, the drainage sensor 52 detects the bathtub drainage, and transmits a drainage detection signal to the control device 60. Then, the control device 60 drives the pump 31 for the set time and switches the switching valve 32 so as to communicate with the other outflow side. Thus, by providing the drainage sensor 52, it is possible to control the pump 31 not to be driven when the drainage device 51 is opened in a state where there is no remaining hot water in the bathtub 2.

  As a result, together with the bathtub drainage flowing from the bathtub drain outlet 50 through the first pipe 21 into the inflow chamber 13 of the drain trap 10, the pump 31 sucks in the inlet 3 A, the upstream pipe 23 A, and the pump device 30. And the bathtub drainage joined by the 1st piping 21 flows in via the 2nd piping 22. For this reason, in the initial stage of drainage, the flow rate per unit time of the bathtub drainage flowing into the inflow chamber 13 increases. Therefore, even if there is little remaining hot water in the bathtub 2 and the water level in the bathtub is low, the momentum of the water flow of the bathtub drainage flowing into the inflow chamber 13 can be increased.

  Further, the switching valve 32 is switched so as to communicate with the other outflow side, so that the bathtub drainage sucked from the suction port 3 </ b> A can flow into the inflow chamber 13 without being circulated into the bathtub 2. For this reason, the flow volume per unit time of the bathtub waste_water | drain drained into the inflow chamber 13 can be increased.

  Further, the outflow direction of the bathtub drainage flowing out from the downstream end of the second pipe 22 into the first pipe 21 is the same direction as the first pipe 21 extending toward the second inlet 12 of the drain trap 10. Since the two pipes 22 are connected to the first pipe 21, the bathtub drainage merges from the second pipe 22 along the direction in which the bathtub drainage flows down in the first pipe 21. For this reason, the momentum of the water flow of the bathtub drainage which flows into the 2nd inflow port 12 can be strengthened.

Thus, by the force of the tub drainage water flowing into the inflow chamber 13 is increased, the momentum of the swirl of the inflow chamber 13 becomes strong, the water level in the inflow chamber 13 also can be raised favorably. At this time, as shown in FIG. 5, the vertical ribs 14R of the mesh portion 14A of the hair catcher 14 are formed with the inclined surfaces 14K along the swirling direction of the vortex, so that the vortex flows well in the mesh portion 14A. Can be formed.

  In this way, at the initial stage of drainage, the hair or the like entangled with the mesh portion 14A of the hair catcher 14 can be surely peeled off by the vortex formed in the inflow chamber 13, and can be collected at the center of the mesh portion 14A. Thereafter, the cover 42 of the drainage basin 40 is removed, the gripping portion 14B of the hair catcher 14 is gripped, the hair catcher 14 is taken out from the inflow chamber 13 to the washing place 1 side, and the screen of the hair catcher 14 is simply turned upside down. The hair in the portion 14A can be easily discarded. Moreover, since the hair etc. which were entangled with the net | network part 14A of the hair catcher 14 by the eddy current formed in the inflow chamber 13 are peeled off, the net | network part 14A is not obstruct | occluded and the waste_water | drain in the inflow chamber 13 can flow favorably.

  Therefore, the drainage device of the embodiment is easy to maintain and can drain well.

  In this drainage device, after the set time has elapsed, the control device 60 stops driving the pump 31 and switches the switching valve 32 so as to communicate with one outflow side. For this reason, energy saving can be achieved by stopping the drive of the pump 31 in a short time. Further, by stopping the driving of the pump 31, the flow rate per unit time of the bathtub drainage flowing into the inflow chamber 13 from the bathtub 2 is reduced, and the time for the bathtub drainage to flow into the inflow chamber 13 is lengthened. Can do. Thereby, since the vortex | eddy_current in the inflow chamber 13 can be formed for a long time, the hair etc. can be gathered reliably in the hair catcher 14. FIG. For this reason, the hair etc. in the hair catcher 14 can be easily thrown away only by taking out the hair catcher 14 from the inflow chamber 13 to the washing place 1 side and inverting it upside down.

  Further, when the drainage resistance of the pipe 4 connected downstream of the drain trap 10 is large, if the pump 31 is continuously driven, the bathtub drainage cannot be discharged from the drain trap 10 and overflows from the drain 40 into the washing place 1. Can happen. Even in such a case, since the pump 31 is driven only for the set time at the initial stage of drainage and then stopped, it is possible to prevent the bathtub drainage from overflowing from the drainage basin 40 to the washing place 1.

  In addition, in the drainage device of the embodiment, the pump 31 circulates hot water in the bathtub 2 in addition to allowing the bathtub drainage to flow into the inflow chamber 13 of the drain trap 10, and jets a jet flow mixed with bubbles into the bathtub 2. Can be made. That is, the pump 31 can be used as a circulation pump of the bubble generating device. Thus, a plurality of functions can be realized by one pump, and the bathroom can be used more comfortably. Moreover, since the pump of the bubble generating device attached to the bathtub 2 is used, a space for separately installing a pump used only for the drainage device can be secured, and the drainage device can be easily installed without requiring labor. Can be attached.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
( 1 ) You may provide the pump only for a drainage device, without using it as the pump of a bubble generation device.
( 2 ) In the embodiment, a switching valve is provided at the branch portion between the circulation path and the branch path. However, an opening / closing valve is provided in each of the circulation path and the branch path, and each opening / closing valve is controlled to open / close. You may switch.
( 3 ) In the embodiment, the jet nozzle is attached to the side surface of the bathtub, but the jet nozzle may be attached to the bottom surface of the bathtub. Moreover, you may provide a suction inlet and a jet nozzle in another location.
( 4 ) In the embodiment, the drainage sensor is provided, but the drainage sensor may not be provided, and only the opening / closing of the bathtub drainage port may be detected to drive the pump. In this case, a water level sensor for detecting the water level in the bathtub may be provided, and the pump may be driven based on the water level sensor.
( 5 ) In the embodiment, the bathtub drain opening is opened and closed by the electrically driven drain plug device, but a manual drain plug may be used. In this case, a drainage sensor that detects bathtub drainage discharged from the bathtub drainage port or a water level sensor that detects the water level in the bathtub may be provided, and the pump may be driven based on the drainage sensor or the water level sensor.

  The present invention is applicable to bathrooms.

DESCRIPTION OF SYMBOLS 1 ... Washing place 2 ... Bathtub 3A ... Inlet 3B ... Outlet 10 ... Drain trap 11 ... 1st inlet 12 ... 2nd inlet 13 ... Inlet chamber 14 ... Hair catcher 15 ... Outlet chamber 16 ... Outlet 21,22, 23 ... Communication passage (21 ... First piping (tub drainage channel), 22 ... Second piping (branch channel), 23 ... Third piping (circulation channel))
31 ... Pump 40 ... Drainage 41 ... Washing area drain 50 ... Bathtub drain 52 ... Drain sensor

Claims (4)

A first inflow port that can communicate with a wash basin drain port provided in a bottom surface of a drainage basin provided in a wash basin and a tub drain port provided in a bottom surface of a tub adjacent to the wash basin through a bathtub drain channel A second inflow port that can communicate, an inflow chamber that is continuously provided below the first inflow port, and into which the bathtub drainage flows from the second inflow port, and the wash basin drain port and the first inflow port. A drainage device comprising a drainage trap having a hair catcher detachably housed in the inflow chamber, and an outflow chamber in communication with the inflow chamber and through which an outflow port is provided,
A communication path that allows the bathtub and the inflow chamber to communicate with each other, and a pump that is provided in the communication path and allows the bathtub drainage to flow into the inflow chamber .
The communication path is communicated with the bathtub drainage channel, and the bathtub drainage discharged from the pump is joined along the direction in which the bathtub drainage discharged from the bathtub drainage flows down in the bathtub drainage channel. To drain. A first inflow port that can communicate with a wash basin drain port provided in a bottom surface of a drainage basin provided in a wash basin and a tub drain port provided in a bottom surface of a tub adjacent to the wash basin through a bathtub drain channel A second inflow port that can communicate, an inflow chamber that is continuously provided below the first inflow port, and into which the bathtub drainage flows from the second inflow port, and the wash basin drain port and the first inflow port. A drainage device comprising a drainage trap having a hair catcher detachably housed in the inflow chamber, and an outflow chamber in communication with the inflow chamber and through which an outflow port is provided,
A communication path that allows the bathtub and the inflow chamber to communicate with each other, and a pump that is provided in the communication path and allows the bathtub drainage to flow into the inflow chamber.
The drainage device characterized in that the pump is driven for a set time in an initial stage of drainage in which the bathtub drainage port is opened and bathtub drainage flows into the inflow chamber from the second inlet . A circulation path which is attached so as to be able to communicate with the suction port and the spout that are provided in the bathtub, and a branch path branched from the circulation path and communicated with the inflow chamber,
The said pump is provided in the said circulation path upstream from the said branch path, The said communication path is comprised by the said circulation path and the said branch path connected to the said suction inlet. The drainage device according to 1 or 2. 2. A drainage sensor for detecting bathtub drainage discharged from the bathtub drainage port is provided in the bathtub drainage channel, and the pump is driven when the drainage sensor detects bathtub drainage. The drainage device of any one of thru | or 3.

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