JP6969706B2 - Drainage system - Google Patents

Description

The present invention relates to a drainage system.

Patent Document 1 discloses an abnormality detection device during bathing. This device includes an abnormality determining means for determining an abnormality of a bather in a bathtub, and a forced drainage means for forcibly draining hot water in the bathtub based on the determination result of the abnormality determining means. The forced drainage means operates a motor pump to pump up hot water in the bathtub and drain it.

Japanese Patent Application Laid-Open No. 2000-099855

In the abnormality detection device of Patent Document 1, it may take a long time to drain water.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to obtain a drainage system capable of draining water in a short time.

The drainage system according to the present invention is provided on a bathtub having an inner wall forming a water storage portion for accommodating hot water, an outer wall surrounding the inner wall, a first drainage port provided on the inner wall, and the inner wall. A second drainage port having a larger area than the first drainage port is provided, and the second drainage port is a recess that protrudes from the inner wall to the opposite side of the water storage portion and forms a step with respect to the inner wall. A lid for closing the recess is provided, and a plurality of first openings are formed on the side surface of the recess forming the step, and the lid moves toward the bottom of the recess to store water. Is drained from the water through the plurality of first openings.

In the drainage system according to the first invention of the present application, drainage can be performed from a second drainage port having a larger area than the first drainage port. Therefore, it can be drained in a short time.

It is a figure explaining the structure of the drainage system which concerns on Embodiment 1. FIG. It is a figure explaining the structure of the bathtub which concerns on Embodiment 1. FIG. It is sectional drawing of the bathtub which concerns on Embodiment 1. FIG. It is a perspective view explaining the structure of the bathtub which concerns on Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the recess which concerns on Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the recess which concerns on 1st modification of Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the recess which concerns on the 2nd modification of Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the recess which concerns on the 3rd modification of Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the concave part which concerns on the 4th modification of Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the recess which concerns on 5th modification of Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the concave part which concerns on the 6th modification of Embodiment 1. FIG. It is a figure explaining the structure of the side surface of the recess which concerns on 7th modification of Embodiment 1. FIG. It is sectional drawing explaining the drainage method. It is a perspective view explaining the drainage method. It is a figure explaining the drainage method to a washing place. It is a perspective view explaining the structure of the 2nd opening. It is a figure explaining step 1. FIG. It is a figure explaining step 2. It is a figure explaining step 3. It is a figure explaining the structure of the drainage system which concerns on a comparative example. It is sectional drawing explaining the drainage method which concerns on a comparative example. It is a figure explaining the structure of the 2nd drainage port which concerns on the 8th modification of Embodiment 1. FIG. It is a figure explaining the 2nd drainage port which concerns on the 9th modification of Embodiment 1. FIG. It is a figure explaining the 2nd drainage port which concerns on the 10th modification of Embodiment 1. FIG. It is a figure explaining the 2nd drainage port which concerns on 11th modification of Embodiment 1. FIG. It is a figure explaining the 2nd drainage port which concerns on the 12th modification of Embodiment 1. FIG. It is a figure explaining the 2nd drainage port which concerns on the 13th modification of Embodiment 1. FIG. It is a figure explaining the 2nd drainage port which concerns on the 14th modification of Embodiment 1. FIG. It is sectional drawing of the bathtub which concerns on the fifteenth modification of Embodiment 1. FIG. It is sectional drawing explaining the drainage method which concerns on the fifteenth modification of Embodiment 1. FIG. It is a perspective view explaining the structure of the outer wall cover which concerns on the fifteenth modification of Embodiment 1. FIG. It is a figure explaining the drainage method to the washing place which concerns on the fifteenth modification of Embodiment 1. FIG. It is a perspective view explaining the structure of the 2nd opening which concerns on the 16th modification of Embodiment 1. FIG. It is sectional drawing explaining the structure of the 2nd opening which concerns on the 16th modification of Embodiment 1. FIG.

The drainage system according to the embodiment of the present invention will be described with reference to the drawings. The same or corresponding components may be designated by the same reference numerals and the description may be omitted.

Embodiment 1.
FIG. 1 is a diagram illustrating a configuration of a drainage system 100 according to the first embodiment. The drainage system 100 includes a control unit 10. The control unit 10 controls the water heater 12 to fill the bathtub with hot water. The control unit 10 may control home appliances provided in the building, various sensors, and the like in cooperation with each other. The control unit 10 may be a management device in a PC or a HEMS (Home Energy Management System). Further, the control unit 10 may be an Al (Artificial Intelligence) speaker controlled by an IoT (Internet of Things) adapter. Further, the control unit 10 may be included in the water heater 12.

The sensor 14 detects the movement, physical condition, or water level of the bathtub, and detects that the bather is drowning. The sensor 14 is, for example, a Doppler sensor. Further, when the sensor 14 detects that the bather is drowning, the control unit 10 performs emergency drainage from the bathtub by the second drainage port 40 described later. Further, the control unit 10 performs normal drainage from the first drain port 30. When the first drain port 30 is an automatic drain plug, the first drain port 30 is controlled by the control unit 10. The first drain port 30 may be a manual drain plug. In this case, the first drainage port 30 does not have to be controlled by the control unit 10.

FIG. 2 is a diagram illustrating the structure of the bathtub 20 according to the first embodiment. FIG. 3 is a cross-sectional view of the bathtub 20 according to the first embodiment. FIG. 4 is a perspective view illustrating the structure of the bathtub 20 according to the first embodiment. The bathtub 20 has an inner wall 21 forming a water storage portion 23 for accommodating hot water and an outer wall 22 surrounding the inner wall 21. The space between the inner wall 21 and the outer wall 22 is hollow, and an air layer is provided.

A first drainage port 30 is provided at the bottom portion 21a of the inner wall 21. The first drainage port 30 is used for normal drainage performed after bathing, cleaning, or the like. The drainage from the first drainage port 30 is drained into the sewage through the lower drainage port 24 provided on the lower surface of the bathtub 20 shown in FIG. The first drainage port 30 and the lower drainage port 24 may be connected by a drainage pipe 32 described later. Further, the drainage from the first drainage port 30 may flow to the lower drainage port 24 through the space between the inner wall 21 and the outer wall 22.

A second drainage port 40 is provided at the bottom portion 21a of the inner wall 21. The second drainage port 40 has a larger area than the first drainage port 30. In the present embodiment, the second drainage port 40 is provided at the end of the bottom portion 21a of the inner wall 21. Not limited to this, the second drainage port 40 may be provided in the central portion of the bottom portion 21a or on the side surface of the inner wall 21.

As shown in FIG. 3, the second drainage port 40 has a recess 41 and a lid 42. The recess 41 projects from the inner wall 21 on the side opposite to the water storage portion 23. The recess 41 forms a step with respect to the inner wall 21. The lid 42 closes the recess 41.

The recess 41 has a side surface 41a and a bottom portion 41b. The bottom portion 41b faces the opening formed in the inner wall 21. The side surface 41a extends from the opening formed in the inner wall 21 to the side opposite to the water storage portion 23. The side surface 41a connects between the opening formed in the inner wall 21 and the bottom portion 41b.

As shown in FIGS. 2 and 4, the recess 41 has a band shape. Further, the lid 42 has a shape corresponding to the recess 41 and is band-shaped. The recess 41 extends along the longitudinal direction of the bathtub 20. Further, the recess 41 is curved inward in a plan view at the end portion in the longitudinal direction of the bottom portion 21a of the inner wall 21. With such a shape, a large area of the second drainage port 40 can be secured. Therefore, quick drainage is possible. Further, by narrowing the width of the second drainage port 40, it is possible to prevent a person or an object from being sucked in.

FIG. 5 is a diagram illustrating the structure of the side surface 41a of the recess 41 according to the first embodiment. The side surface 41a of the recess 41 forms a step with respect to the inner wall 21. A plurality of first openings 41c are formed on the side surface 41a. The first opening 41c is circular. The structure of the first opening 41c is not limited to this, and may be elliptical. The side surface 41a of the recess 41 is formed of, for example, a punching metal. The first opening 41c is a punching hole.

FIG. 6 is a diagram illustrating the structure of the side surface 341a of the recess 41 according to the first modification of the first embodiment. A plurality of first openings 341c are formed on the side surface 341a. The first opening 341c is a square. The structure of the first opening 341c is not limited to this, and may be a rectangle or a quadrangle.

FIG. 7 is a diagram illustrating the structure of the side surface 441a of the recess 41 according to the second modification of the first embodiment. A plurality of first openings 441c are formed on the side surface 441a. The first opening 441c is a triangle. The structure of the first opening 441c is not limited to this, and may be a polygon. Any shape can be adopted as long as it is established as a punching hole as the first opening 441c.

FIG. 8 is a diagram illustrating the structure of the side surface 241a of the recess 41 according to the third modification of the first embodiment. A plurality of first openings 241c are formed on the side surface 241a. Each of the plurality of first openings 241c is a slit. The first opening 241c is a rectangle extending in the lateral direction of the side surface 241a.

FIG. 9 is a diagram illustrating the structure of the side surface 541a of the recess 41 according to the fourth modification of the first embodiment. A plurality of first openings 541c are formed on the side surface 541a. Each of the plurality of first openings 541c is a rectangular slit extending in the longitudinal direction of the side surface 541a. The first opening 541c is formed continuously, for example, from one end to the other end of the side surface 541a.

FIG. 10 is a diagram illustrating the structure of the side surface 641a of the recess 41 according to the fifth modification of the first embodiment. A plurality of first openings 541c are formed on the side surface 641a. Each of the plurality of first openings 641c is a rectangular slit extending in the longitudinal direction of the side surface 641a. The plurality of first openings 641c are arranged in the longitudinal direction of the side surface 641a.

FIG. 11 is a diagram illustrating the structure of the side surface 741a of the recess 41 according to the sixth modification of the first embodiment. A plurality of first openings 741c are formed on the side surface 741a. Each of the plurality of first openings 741c is a slit extending in a direction inclined with respect to the lateral direction of the side surface 741a. Not limited to this, any shape can be adopted as the first opening 741c as long as it is a slit capable of discharging water.

FIG. 12 is a diagram illustrating the structure of the side surface 841a of the recess 41 according to the seventh modification of the first embodiment. The side surface 841a may be mesh-shaped. The side surface 841a is formed from, for example, a wire mesh. The roughness or structure of the mesh can be anything as long as it can be drained and the human limbs are not inhaled.

Each of the plurality of first openings 41c is sized so that, for example, a person or a person's limbs are not sucked. By forming the second drainage port 40 in this way, it is possible to prevent a person from being sucked into the large second drainage port 40.

FIG. 13 is a cross-sectional view illustrating a drainage method. FIG. 14 is a perspective view illustrating a drainage method. The control unit 10 moves the lid 42 toward the bottom portion 41b of the recess 41 according to the information detected by the sensor 14. The control unit 10 moves the lid 42 in the direction indicated by the arrows in FIGS. 13 and 14. As the lid 42 moves toward the bottom 41b, the plurality of first openings 41c are exposed to the water storage portion 23. Therefore, the water is drained from the water storage unit 23 through the plurality of first openings 41c.

In the present embodiment, drainage is performed from the side surface 41a provided along the opening formed in the inner wall 21. Therefore, even if the width of the second drainage port 40 is narrow, the amount of drainage can be secured by lengthening the outer circumference of the second drainage port 40.

Here, the recess 41 is preferably deeper than the thickness of the lid 42. As a result, it is possible to prevent the drainage from the plurality of first openings 41c from being obstructed by the lid 42. Further, the recess 41 has a size capable of accommodating the lid 42.

Further, the width of the recess 41 increases as the distance from the inner wall 21 increases. That is, the distance between the portions of the side surface 41a facing each other is wider as the position is deeper. As a result, a large area of the side surface 41a can be secured, and quick drainage becomes possible. Further, a plurality of first openings 41c may be formed in the bottom portion 41b of the recess 41.

FIG. 15 is a diagram illustrating a method of draining water to the washing place 50. The first opening 41c of the second drainage port 40 leads to the space between the inner wall 21 and the outer wall 22. The drainage from the second drainage port 40 passes through the space between the inner wall 21 and the outer wall 22 and flows to the lower drainage port 24. Further, a plurality of second openings 25 are provided in the portion of the outer wall 22 of the bathtub 20 facing the washing place 50. The drainage from the second drainage port 40 passes through the space between the inner wall 21 and the outer wall 22 and flows to the washing place 50 through the plurality of second openings 25.

Further, as shown in FIG. 15, the plurality of second openings 25 may be provided at a position higher than the lower drainage port 24. At this time, only when the drainage from the lower drainage port 24 is not in time and the water level in the space between the inner wall 21 and the outer wall 22 exceeds the height provided with the second opening 25, the plurality of second openings Drainage can be performed from 25 to the washing place 50. As a result, the water can be drained from the lower drain port 24 in the normal time when the amount of drainage per hour is small, and can be drained to the washing place 50 only in an emergency.

FIG. 16 is a perspective view illustrating the structure of the second opening 25. The plurality of second openings 25 are formed at the lower ends of the portion of the outer wall 22 facing the washing place 50. Each of the plurality of second openings 25 is a slit. The shape of the second opening 25 is not limited to this, and may be circular, elliptical, polygonal, or the like. Further, a plurality of second openings 25 may be formed by forming the lower end of the portion of the outer wall 22 facing the washing place 50 into a mesh shape. Further, one or more second openings 25 may be provided.

The second opening 25 allows water to flow to the washing place 50 side even when the first drainage port 30 is clogged with hair or the like. Therefore, quick emergency drainage can be reliably performed.

Further, the control unit 10 may open the second opening 25 according to the information detected by the sensor 14. In this case, the second opening 25 is normally closed.

Next, the operation of the drainage system 100 will be described by steps 1 to 3. FIG. 17 is a diagram illustrating step 1. FIG. 18 is a diagram illustrating step 2. FIG. 19 is a diagram illustrating step 3. The sensor 14 is provided, for example, on the ceiling of the bathroom 60. Further, a water heater 12 is provided on the wall of the bathroom 60. Further, outside the bathroom 60, an actuator 16 of the water heater 12 is provided.

Here, it is assumed that the bather 80 loses consciousness in the bathtub 20 due to a heat shock symptom or the like. The sensor 14 is a Doppler sensor and detects the movement of an object. The sensor 14 detects an abnormal state, for example, when the bather 80 does not move for a predetermined time. The sensor 14 may be a motion sensor or a vital sensor. When the sensor 14 is a vital sensor, the sensor 14 detects a pulse level, a respiratory level, a body movement, and the like, and detects an abnormal state when these values are out of a predetermined range.

It suffices if the sensor 14 can detect that a person is drowning, has lost consciousness, has fallen, or is in poor physical condition as an abnormal state. Further, the abnormal state may be detected by a plurality of sensors 14 or a plurality of types of sensors 14.

When the sensor 14 detects the abnormal state in step 1, the control unit 10 immediately activates the emergency response mode. The control unit 10 stops the hot water supply in the bathtub 20. At this time, the control unit 10 may issue an alarm notifying the water heater 12 of an emergency situation or an alarm notifying that the bathtub 20 should be drained immediately. Further, the alarm may be given from the actuator 16 to the outside of the bathroom 60.

In step 2, the control unit 10 forcibly opens the large-capacity second drain port 40 capable of discharging hot water faster than usual. That is, the control unit 10 moves the lid 42 toward the bottom 41b to start the emergency discharge of hot water. As a result, the control unit 10 prevents the bather 80 from drowning and preferentially protects the life of the bather 80.

At this time, the control unit 10 may notify that the water in the bathtub 20 is drained from the water heater 12. Further, the control unit 10 may emit a warning sound from the water heater 12. Further, the notification and the warning sound may be emitted from the operating device 16.

In step 3, the control unit 10 contacts the emergency contact. Contacting emergency contacts includes, for example, calling an ambulance or contacting a family member. Further, after starting drainage from the second drain port 40, the control unit 10 gives advice on future measures from the water heater 12 to the user 81 such as a family member.

Advice includes, for example, calling an ambulance and the time it takes for the ambulance to arrive. The advice may also include emergency response until an ambulance arrives or emergency response to calm heat shock symptoms. The advice may also include resting the bather 80, maintaining the body temperature of the bather 80, and the like. As a result, it is possible to prevent the caregiver from rushing to take an erroneous measure.

Advice may be given from the smartphone of the family or caregiver. In this case, the emergency response until the patient is transported to the hospital may be presented by an application or the like. In addition, the physical condition data of the bather 80 and the analysis result may be notified as an emergency breaking news to the transport destination by the ambulance so that appropriate treatment is promoted. From the above, it is possible to take prompt and accurate measures.

Next, the effect of this embodiment will be described. FIG. 20 is a diagram illustrating a configuration of a drainage system according to a comparative example. FIG. 21 is a cross-sectional view illustrating a drainage method according to a comparative example. In the drainage system according to the comparative example, the bathtub 120 is provided with only the first drainage port 30. The first drainage port 30 is normally closed by a stopper 31. By removing the plug 31, the drainage from the first drainage port 30 flows to the lower drainage port 24 through the drainage pipe 32.

Here, when the bather 80 is an adult and the face is maintained at a high position, it is highly possible that drowning can be prevented if the water level of the bathtub 20 is halved. However, for example, when the bather 80 is a small elderly person or a child, when the bather 80 lies on his back on the bathtub 20, or when his face is prone toward the bottom of the bathtub 20, the water level is not further lowered. And the nose or mouth may not separate. In such a case, in order to prevent the bather 80 from drowning, a large amount of drainage is required in a short time. Therefore, there is a possibility that the drainage speed will be insufficient with the drainage using the normal first drainage port 30. Further, if the first drainage port 30, the drainage pipe 32 or the lower drainage port 24 is clogged, drainage may not be possible. Similarly, when hot water is pumped up and drained by a pump or the like, the drainage speed may be insufficient.

On the other hand, in the present embodiment, the large capacity second drain port 40 can be drained speedily. Therefore, it is possible to prevent the bather 80 from drowning, and to give priority to the life of the bather 80 and protect it.

In addition, if a pump is installed on the helicopter of the bathtub, the pump may get in the way during bathing and cleaning. In addition, the pump itself may be easily soiled, which may take time and effort for cleaning. On the other hand, in the present embodiment, the second drainage port 40 is provided at the bottom portion 21a of the inner wall 21. Therefore, it is possible to prevent the bathroom 60 from becoming narrow. In addition, it is possible to suppress the time and effort required for cleaning.

FIG. 22 is a diagram illustrating the structure of the second drainage port 240 according to the eighth modification of the first embodiment. In the second drainage port 240, the band-shaped recess 41 is provided in a straight line. The second drainage port 240 extends from one end to the other end in the longitudinal direction of the bottom portion 21a of the bathtub 20. As a result, a large area of the second drainage port 240 can be secured. Further, it is possible to prevent a person or an object from being sucked into the recess 41.

FIG. 23 is a diagram illustrating a second drainage port 340 according to a ninth modification of the first embodiment. In the second drainage port 340, the band-shaped recess 41 is provided so as to form a circle. At this time, the side surface 41a of the recess 41 draws a double circle. Therefore, a large area of the side surface 41a can be secured, and the amount of drainage per hour can be increased.

FIG. 24 is a diagram illustrating a second drainage port 440 according to the tenth modification of the first embodiment. In the second drainage port 440, the band-shaped recess 41 is provided so as to form an ellipse. The recess 41 is vertically long along the longitudinal direction of the bathtub 20. Therefore, the area of the side surface 41a can be further secured, and the amount of drainage per hour can be increased.

FIG. 25 is a diagram illustrating a second drainage port 540 according to the eleventh modification of the first embodiment. In the second drainage port 540, the band-shaped recess 41 is provided so as to form a rectangle. The second drainage port 540 is provided at the longitudinal end of the bottom portion 21a of the bathtub 20. Also in this case, the side surface 41a of the recess 41 draws a double square, so that a large area of the side surface 41a can be secured.

FIG. 26 is a diagram illustrating a second drainage port 640 according to a twelfth modification of the first embodiment. In the second drainage port 640, the band-shaped recess 41 is provided so as to form a rectangle. The second drain port 640 is vertically elongated along the longitudinal direction of the bathtub 20. Therefore, the area of the side surface 41a can be further secured, and the amount of drainage per hour can be increased.

FIG. 27 is a diagram illustrating a second drainage port 740 according to a thirteenth modification of the first embodiment. In the second drainage port 740, the band-shaped recess 41 may form a rectangle with rounded corners. A rectangle with rounded corners is also called a rounded rectangle. Not limited to the above example, the band-shaped recess 41 may be provided so as to form a polygon. Further, the band-shaped recess 41 may be I-shaped, U-shaped, L-shaped, or C-shaped. Further, the inner wall 21 may be provided with a plurality of band-shaped recesses 41.

Further, the recess 41 does not have to be strip-shaped. FIG. 28 is a diagram illustrating a second drainage port 840 according to the 14th modification of the first embodiment. In the second drainage port 840, the recess 41 is circular. As described above, even when the recess 41 is provided to have a wide width, it is possible to prevent a person from being sucked into the outside of the recess 41 by flowing water from the small first opening 41c provided on the side surface 41a.

Further, the concave portion 41 is not limited to a circular shape, but may be an elliptical shape or a polygonal shape. The recess 41 may have any shape as long as it can drain water at high speed. The length of the recess 41 in the longitudinal direction may be larger than ½ of the length of the bottom portion 21a of the inner wall 21 in the lateral direction.

FIG. 29 is a cross-sectional view of the bathtub 20 according to the fifteenth modification of the first embodiment. The bathtub 20 is provided with a second opening 925 and an outer wall lid 925a that closes the second opening 925. The outer wall lid 925a is also called a panel portion. Further, the lid 42 of the second drainage port 940 is provided with a convex portion 942a protruding toward the outer wall lid 925a. The convex portion 942a is provided on the surface of the lid 42 opposite to the water storage portion 23. The convex portion 942a has, for example, a rod shape.

FIG. 30 is a cross-sectional view illustrating a drainage method according to the fifteenth modification of the first embodiment. As the lid 42 moves toward the bottom 41b of the recess 41, the outer wall lid 925a is pushed open by the convex portion 942a. In this way, in this modification, the lid 42 and the outer wall lid 925a are interlocked with each other. The outer wall lid 925a opens toward the outside of the bathtub 20 with the lower end as a fulcrum. The outer wall lid 925a may have another structure as long as it is pushed by the convex portion 942a to open it. The convex portion 942a projects outward from the second opening 925 in a state where the outer wall lid 925a is open.

FIG. 31 is a perspective view illustrating the structure of the outer wall lid 925a according to the fifteenth modification of the first embodiment. One outer wall lid 925a is provided in the bathtub 20. Not limited to this, the outer wall lid 925a may be composed of a plurality of doors.

FIG. 32 is a diagram illustrating a method of draining water to the washing place 50 according to the fifteenth modification of the first embodiment. By opening the outer wall lid 925a and opening the second opening 925, drainage is performed toward the washing place 50.

The convex portion 942a penetrates, for example, the bottom portion 41b and extends toward the outer wall lid 925a. Not limited to this, the convex portion 942a may have another structure as long as the outer wall lid 925a can be opened. Only one convex portion 942a may be provided on the lid 42, or a plurality of convex portions 942a may be provided. Further, the convex portion 942a may have a plate shape extending along the outer wall lid 925a.

FIG. 33 is a perspective view illustrating the structure of the second opening 1025 according to the sixteenth modification of the first embodiment. FIG. 34 is a cross-sectional view illustrating the structure of the second opening 1025 according to the sixteenth modification of the first embodiment. Only one second opening 1025 may be provided.

Further, at the lower end of the outer wall 22 facing the washing place 50, a step structure recessed toward the inside of the bathtub 20 is provided. A second opening 1025 is provided in the recessed portion of the outer wall 22. As a result, it is possible to prevent the second opening 1025 from being conspicuous, and it is possible to suppress a sense of discomfort due to the provision of the second opening 1025.

In general, the elderly are more prone to heat shock symptoms. It is also possible that elderly people or infants with dementia are more likely to accidentally fall into the bathtub 20 and drown. The control unit 10 may increase the sensitivity of the sensor 14 to a specific user who is likely to drown more than other users.

The control unit 10 stores, for example, a plurality of users in advance. Further, the drainage system 100 has a sensor with a built-in camera installed in the bathroom 60. The control unit 10 identifies the bather 80 by referring to the information about the bather 80 detected by the sensor built in the camera and the information of a plurality of users stored in advance. The control unit 10 increases the sensitivity of the sensor 14 when the bather 80 is, for example, a user who is prone to heat shock symptoms, a user who is in poor physical condition, an elderly person, an infant, or an infant.

The control unit 10 may relax the conditions for determining the abnormal state for these specific users more than other users. Further, the frequency of detecting the state of the bather 80 may be increased. In addition, the number of items for which vital measurement is performed may be increased. Further, when the drainage system 100 has a plurality of sensors 14, the number of sensors 14 to be used may be increased.

By increasing the sensitivity of the sensor 14 only to a specific user, it is possible to suppress power consumption while improving the accuracy of abnormality detection.

Further, the control unit 10 may check the physical condition of the bather 80 based on the information of the sensor provided outside the bathroom 60. The sensor provided outside the bathroom 60 is provided in, for example, a dressing room, a toilet, a closet, a moving space before and after bathing, and the like. As a result, the control unit 10 checks the physical condition of the bather 80 before and after bathing. Further, the control unit 10 may sense the physical condition of the bather 80 for a long period of time by using the sensor 14 and the sensor provided outside the bathroom 60 to grasp the recent tendency of the physical condition. The control unit 10 may sense the physical condition of the bather 80 throughout the year. As a result, the control unit 10 can accurately grasp the recent physical condition of the bather 80.

The control unit 10 may select a user who increases the sensitivity of the sensor 14 more than other users based on the sensing result as described above. Further, if the control unit 10 determines that the bather 80 is in poor physical condition before taking a bath, the control unit 10 may recommend the bather 80 not to take a bath. This enables highly accurate monitoring by the control unit 10. Further, the control unit 10 may set the temperature of the hot water in the bathtub 20 to be lower or higher than that at the time of bathing by another user, based on the sensing result.

Further, the control unit 10 may drain water from the second drain port 40 when cleaning the bathtub 20. The bathtub 20 is provided with a bathtub cleaning device inside. The control unit 10 controls the bathtub cleaning device to generate bubbles in the bathtub 20. As a result, the bathtub 20 is cleaned. Further, the control unit 10 links the drainage system 100 and the bathtub cleaning device. After generating bubbles from the bathtub cleaning device, the control unit 10 moves the lid 42 toward the bottom 41b of the recess 41 and drains water from the second drain port 40. As a result, bubbles and dirt in the bathtub 20 can be rapidly discharged.

Generally, when the bathtub 20 is cleaned with foam or the like and then drained, a waterline due to foam or dirt may be attached. On the other hand, in the present embodiment, the adhesion of the waterline can be suppressed by rapidly draining the water from the second drain port 40. Therefore, cleaning in the bathtub 20 having a cleaning function can be performed in a short time.

Further, even in the normal state, drainage may be performed from the second drain port 40. In particular, when it is necessary to frequently replace the hot water in the bathtub 20 in an elderly home or the like, high-speed drainage using the second drainage port 40 is effective.

The technical features described in this embodiment may be used in combination as appropriate.

10 Control unit, 12 Water supply unit, 14 Sensor, 16 Operator, 20 Bathtub, 21 Inner wall, 21a Bottom, 22 Outer wall, 23 Water storage unit, 24 Lower drainage port, 25 2nd opening, 30 1st drainage port, 31 plug, 32 drainage pipe, 40 second drainage port, 41 recess, 41a side surface, 41b bottom, 41c first opening, 42 lid, 50 washroom, 60 bathroom, 80 bather, 81 user, 100 drainage system, 120 bathtub, 240th 2 drainage port, 241a side surface, 241c first opening, 340 second drainage port, 341a side surface, 341c first opening, 440 second drainage port, 441a side surface, 441c first opening, 540 second drainage port, 541a side surface, 541c 1st opening, 640 2nd drain, 641a side, 641c 1st opening, 740 2nd drain, 741a side, 741c 1st opening, 840 2nd drain, 841a side, 925 2nd opening, 925a outer wall lid, 940 2nd drain, 942a convex part, 1025 2nd opening

Claims (17)

A bathtub having an inner wall forming a water storage portion for accommodating hot water, an outer wall surrounding the inner wall, and a first drainage port provided on the inner wall.
A second drainage port provided on the inner wall and having a larger area than the first drainage port,
Equipped with
The second drainage port is
A recess that protrudes from the inner wall to the opposite side of the water storage portion and forms a step with respect to the inner wall.
The lid that closes the recess and
Equipped with
A plurality of first openings are formed on the side surface of the recess forming the step.
A drainage system characterized in that the lid moves toward the bottom of the recess to drain water from the water reservoir through the plurality of first openings. A second opening is provided in the portion of the outer wall of the bathtub facing the washing place.
The drainage system according to claim 1, wherein the drainage from the second drainage port flows to the washing place through the second opening. The drainage system according to claim 2, wherein the second opening is formed at the lower end of a portion of the outer wall facing the washing place. The drainage system according to claim 2 or 3, wherein the second opening is a slit. With an outer wall lid that closes the second opening,
The lid is provided with a convex portion protruding toward the outer wall lid.
Any one of claims 2 to 4, wherein when the lid moves toward the bottom of the recess, the outer wall lid is pushed open by the convex portion and the second opening is opened. The drainage system described in the section. The drainage system according to any one of claims 1 to 5, wherein the width of the recess widens as the distance from the inner wall increases. The drainage system according to any one of claims 1 to 6, wherein the recess is deeper than the thickness of the lid. The drainage system according to any one of claims 1 to 7, wherein the recess is strip-shaped. The drainage system according to claim 8, wherein the band-shaped recess is provided so as to form a circle, an ellipse, or a polygon. The drainage system according to any one of claims 1 to 7, wherein the recess is circular, oval, or polygonal. The drainage system according to any one of claims 1 to 10, wherein the side surface of the recess is formed of a punching metal. The drainage system according to any one of claims 1 to 10, wherein each of the plurality of first openings is a slit. The drainage system according to any one of claims 1 to 10, wherein the side surface of the recess is mesh-shaped. A sensor that detects the movement, physical condition, or water level of the bathtub,
A control unit that moves the lid toward the bottom of the recess according to the information detected by the sensor.
The drainage system according to any one of claims 1 to 13, wherein the drainage system is provided. The drainage system according to claim 14, wherein the control unit moves the lid toward the bottom of the recess when cleaning the bathtub. The drainage system according to claim 14, wherein the control unit increases the sensitivity of the sensor to a specific user more than other users. The drainage system according to any one of claims 14 to 16, wherein the control unit gives advice on future measures to the user after starting drainage from the second drainage port. ..

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