Drainage device

Abstract

The present invention provides a drainage device capable of cleaning the space partitioned by the back surface of the tank and the apron. [Solution] The bathroom 10 is equipped with a waterproof pan 20, a tank 30, and an apron 33. A space S is formed on the back of the tank 30, partitioned by the back of the tank 30 and the apron 33. The drainage device 80 has a cleaning water generation unit 90 that generates cleaning water with a cleaning effect from tap water, and a cleaning water supply unit 91 that supplies cleaning water in the space S. By supplying cleaning water into the space S, the apron 33, waterproof pan 20, etc., are cleaned.

Description

Technical Field

[0001] The present invention relates to a drainage device capable of cleaning the back surface of a bathtub tank body, an apron, a bathtub pan, and the like. Background Art

[0002] A bathroom including a bathtub tank body and a washing area is known in the art. On the back surface of the tank body, there is formed a space where an operation device for opening and closing a drainage outlet and a heat insulating material are arranged. Further, a plate-shaped apron that covers from the upper edge of the tank body to the floor surface of the washing area is detachably attached to the side surface of the tank body on the washing area side, and an operation device for the drainage outlet, a reheating pipe and the like are arranged in the space defined by the back surface of the tank body and the apron. Prior Art Documents Patent Documents

[0003] Patent Document 1 Japanese Unexamined Patent Publication No. 2022-139278 Summary of the Invention Problem to be Solved by the Invention

[0004] The space defined by the back surface of the tank body and the apron is prone to mold growth due to moisture and the like, and tends to become unsanitary. However, the space is narrow, and is further covered by the apron in normal times, so cleaning has been difficult.

[0005] Against the background of the above-described prior art, an object of the present invention is to provide a drainage device capable of cleaning the space defined by the back surface of the tank body and the apron. Means for Solving the Problem

[0006] A drainage device according to one aspect of the present invention comprises: a bathroom having a waterproof pan; a tank body placed on the waterproof pan; and an apron covering a side surface of the bathtub, A washing water generating unit that generates washing water having a washing action, It includes a washing water supply unit that supplies washing water, The aforementioned washing water supply unit is a drainage device characterized by being located in a space partitioned by the back surface of the tank body and the apron. [Effects of the Invention]

[0007] According to one aspect of the present invention, a drainage device makes it possible to clean the space partitioned by the back surface of the tank and the apron. [Brief explanation of the drawing]

[0008] [Figure 1] This is a cross-sectional view illustrating the present invention. [Figure 2] This is a cross-sectional view showing the vicinity of the drainage device. [Figure 3] This is a cross-sectional view showing the vicinity of the drainage device. [Figure 4] This is a schematic diagram illustrating a modified example 1. [Figure 5] This is a schematic diagram showing a modified example 2. [Figure 6] This is a schematic diagram showing a modified example 3. [Modes for carrying out the invention]

[0009] A drainage device according to a first aspect of the present invention is provided for a bathroom having a waterproof pan, A tank placed on the aforementioned waterproof pan, An apron covering the side of the tank body, A washing water generating unit that generates washing water having a washing action, It includes a washing water supply unit that supplies washing water, The aforementioned washing water supply unit is a drainage device characterized by being located in a space partitioned by the back surface of the tank body and the apron.

[0010] According to the first embodiment, the back surface of the tank body, the apron, etc., can be cleaned.

[0011] A drainage device according to a second aspect of the present invention is characterized in that the waterproof pan comprises a washing pan forming a washing area, and a bathtub pan on which the tank body is placed, which is the drainage device according to the first aspect.

[0012] According to the second aspect, the configuration of the device can be clarified. Further, it becomes possible to clean the bathtub pan by the cleaning water supply unit.

[0013] A drainage device according to a third aspect of the present invention is characterized in that the cleaning water supply unit supplies cleaning water such that the cleaning water abuts against the apron or the waterproof pan, which is the drainage device according to the first aspect.

[0014] According to the third aspect, the apron or the waterproof pan can be cleaned.

[0015] A drainage device according to a fourth aspect of the present invention is characterized in that the cleaning water supply unit supplies the cleaning water in a mist form, which is the drainage device according to any one of the first to third aspects.

[0016] According to the fourth aspect, the cleaning water can be reliably brought into contact with an object to be cleaned.

[0017] A drainage device according to a fifth aspect of the present invention is characterized in that the cleaning water supply unit supplies cleaning water from the plurality of locations, which is the drainage device according to any one of the first to third aspects.

[0018] According to the fifth aspect, the cleaning water can be reliably brought into contact with an object to be cleaned.

[0019] The embodiments of the drainage device according to the present invention will be described below with reference to the drawings. The embodiments described below are comprehensive or specific examples, and the numerical values, shapes, materials, components and their arrangement / position, connection configurations, procedures, etc., are examples only and do not limit the present invention. Furthermore, among the configurations in the following embodiments, those not described in separate sections can be modified as needed.

[0020] (First Embodiment) In the first embodiment, the drainage device 80 is located in a space S formed on the back surface of the tub 30, which is placed in the bathroom 10, as shown in Figure 1, and cleans the bathtub pan 21, the back surface of the tub 30, the apron 33, etc. In this embodiment, the side of the tub 30 that is exposed to the bathroom 10 is the front surface, and the side that is covered by the apron 33, etc. and is not visible to the user during normal use is the back surface.

[0021] [1.Bathroom] Bathroom 10 consists of a waterproof pan 20, a bathtub 30, and an apron 33. In addition, a space S is formed on the back of the bathtub 30, partitioned by the back of the bathtub 30 and the apron 33.

[0022] The waterproof pan 20 consists of a bathtub pan 21 and a washing area pan 22, and below it is a drain trap 54 consisting of a drainer 541 and a trap body 542. The drain trap 54 also forms part of the drain piping 50. The bathtub pan 21 forms the floor surface on which the tank body 30 is placed, and a drainer 541 is attached to it for draining water from the tank body 30 and the bathtub pan 21. The washing area pan 22 forms the floor surface of the washing area where body washing, hair washing, etc., are performed, and a trap body 542 is attached to it for draining the wastewater from the washing area pan 22.

[0023] The tank body 30 is a bathtub with an open top, and as shown in Figure 2, a drain outlet member 51 constituting a drain outlet 31 is attached to the bottom surface. In addition, an operating section 62 of the drainage device 80 is attached to the upper edge 32 of the tank body 30.

[0024] The apron 33 is attached to the side of the tub 30 on the washing area side and is a panel that covers the area from the upper edge 32 of the tub 30 to the floor of the washing area. The apron 33 is removable and can be attached or detached as needed for cleaning and maintenance.

[0025] Space S is a space partitioned by the back surface of the tank body 30 and the apron 33, and as shown in Figure 1, more specifically, it is partitioned by the wall surface 11 of the bathroom 10, the bathtub pan 21, the back surface of the tank body 30, and the apron 33. Space S contains the drainage device 80, which will be described later, as well as insulation material for the tank body 30, hot water supply and reheating piping, etc., which are not shown.

[0026] [2. Drainage Piping] As shown in Figure 2, the drainage piping 50 includes a drain outlet member 51, a drain trap 54, and piping further downstream of the drain trap 54, forming a drainage channel that discharges wastewater from the drain outlet 31 to the sewer side. In addition, piping that continues to the sewer side is connected to the downstream side of the drain trap 54.

[0027] The drain outlet member 51 is a cylindrical member that forms a drain outlet 31 when attached to the bottom surface of the tank body 30. It has a flange-shaped structure extending outward from its upper end, and a male thread is formed on its side for screwing into the nut member 52. The nut member 52 has a U-shape in cross-section with an internal thread, and screws into the drain member 51 on the back surface of the tank body 30, thereby fixing the drain member 51 to the bottom surface of the tank body 30. In addition, a bellows packing 53 is attached to the lower end of the nut member 52. The bellows packing 53 has its upper end attached to the nut member 52 and its lower end connected to the drainer 541, thereby allowing the wastewater discharged from the drain port 31 to flow into the drainer 541.

[0028] The drain trap 54 discharges wastewater from the tank body 30, the bathtub pan 21, and the washing area pan 22. The drain trap 54 also has a water seal forming section 55 that stores wastewater inside and forms a water seal.

[0029] As shown in Figures 1 and 2, the drainer 541 is a roughly L-shaped pipe in cross-section, with openings on the top and sides. The top opening is fixed to the bathtub pan 21, and a drain cover 546 is installed inside. The side opening is connected to the trap body 542. The drain cover 546 is cylindrical and has an opening to which the bellows packing 53 and the guide section 65 are connected, and a bathtub pan drain port 211 for discharging drainage from the bathtub pan 21. The bathtub pan drain port 211 is an opening for discharging condensation water that has formed on the back surface of the tank body 30 and cleaning water supplied from the drainage device 80, and is fitted with a float valve to prevent backflow of drainage from the drain trap 54 side.

[0030] The trap body 542 is box-shaped with an open top and is attached to the washing area pan 22 to form the washing area pan drain 221. The trap body 542 also has a branch pipe 543 on its side that connects to the drainer 541, and an outlet 544 that discharges wastewater overflowing from the water seal forming section 55 to the sewer side, and a water seal wall 545 is erected on the bottom to store the water seal.

[0031] The drain trap 54 prevents backflow of odors, pests, etc. from the downstream side by forming a water seal with the wastewater stored from the drainer 541 to the water seal wall 545 of the trap body 542.

[0032] [3. Operating device] The operating device 60 includes a support section 61, an operating section 62, a locking mechanism 63, a transmission section 64, a guide section 65, and a stopper cover 66, and remotely opens and closes the drain port 31.

[0033] The support portion 61 is cylindrical with a flange formed at its upper end. The flange abuts against the periphery of the opening formed in the upper edge 32 of the tank body 30, and the support portion 61 is fixed to the tank body 30 by screwing it into a nut located on the back surface of the tank body 30. An operating portion 62 and a locking mechanism 63 are located inside the support portion 61, and a guide portion 65 is connected to its lower end.

[0034] The operating section 62 is cylindrical and positioned on the upper edge 32 of the tank body 30, and is arranged inside the support section 61 so as to be able to reciprocate vertically. The upper surface of the operating section 62 is exposed inside the bathroom 10 and can be pushed by the user, and the locking shaft 631 of the locking mechanism 63 is fitted to the lower surface of the operating section 62.

[0035] The locking mechanism 63 has a rotating gear and a fixed gear (not shown) arranged inside, and a locking shaft 631 extending upward. When the locking shaft 631 is pushed down and displaced by a predetermined amount, the rotating gear and the fixed gear mesh, and the lowered position of the locking shaft 631 is held. When the locking shaft 631 is pushed down again, the meshing between the rotating gear and the fixed gear is released, and the locking mechanism 63 is propelled upward by a spring (not shown). In this way, the locking mechanism 63 is configured so that the position of the locking shaft 631 is switched each time the locking shaft 631 is pushed down.

[0036] The transmission unit 64 is a power transmission member consisting of an outer tube made of resin and a metal inner wire slidably arranged inside the outer tube. One end of the transmission unit 64 is connected to the locking mechanism 63 and the other end is connected to the stopper cap 66, and the inner wire slides inside the outer tube in conjunction with the displacement of the locking shaft 631.

[0037] The guide section 65 is a flexible hose member made of rubber, silicone, or the like, with one end connected to the support section 61 and the other end connected to the drain cover 546. A transmission section 64 is also located inside the guide section 65.

[0038] The stopper cover 66 is a disc-shaped member that closes the drain port 31, and a packing is fitted to its outer circumference. When the stopper cover 66 is in the lowered position, the packing contacts the periphery of the drain port 31, thereby closing the drain port 31. When the operating part 62 is operated and the stopper cover 66 is raised, the drain port 31 opens and the hot water in the tank body 30 is discharged. [4. Drainage device] The drainage device 80 comprises a solenoid valve 82, a sensor 86, a control unit 88, a cleaning water generation unit 90, and a cleaning water supply unit 91. The drainage device 80 is supplied with tap water from a branch pipe 94 that branches off from a water supply pipe that supplies tap water to a faucet (not shown), etc., and generates cleaning water with a cleaning effect from this tap water. Although not shown in Figure 2, a portion of the branch pipe 94 extends above the overflow surface of the tank body 30.

[0039] The solenoid valve 82 is positioned in the middle of the branch pipe 94 and opens and closes the branch pipe 94 based on a control signal from the control unit 88. When the solenoid valve 82 opens the branch pipe 94, cleaning water is supplied from the cleaning water supply unit 91 to the space S. On the other hand, when the solenoid valve 82 closes the branch pipe 94, the supply of cleaning water from the cleaning water supply unit 91 to the space S is stopped.

[0040] Sensor 86 is a flow sensor located downstream of the solenoid valve 82 and detects the flow rate of the cleaning water in the branch pipe 94. When the branch pipe 94 is open by the solenoid valve 82, sensor 86 outputs an error signal if the flow rate of the cleaning water deviates from a set threshold.

[0041] When a switch (not shown) is operated by the user, the control unit 88 outputs a control signal to the solenoid valve 82 and executes a cleaning mode to clean the inside of the drain pipe. In addition, when an error signal is output from the sensor 86, the control unit 88 outputs a control signal to the solenoid valve 82 in accordance with the error signal and displays the error details on a display unit (not shown).

[0042] The cleaning water generation unit 90 generates cleaning water with a cleaning effect from the tap water passing through the branch pipe 94. The cleaning water generated by the cleaning water generation unit 90 can be structured in various ways, including adding chemicals to the tap water to impart a cleaning effect, generating ozone water or hypochlorous acid water from the tap water to impart a cleaning effect, or mixing in microbubbles or nanobubbles to impart a cleaning effect. The method by which the cleaning water is generated in the drainage device 80 is not limited and is appropriately selected depending on the tank 30 to which the drainage device 80 is installed. Furthermore, various structures may be used in combination.

[0043] The cleaning water supply unit 91 is a nozzle that supplies cleaning water generated by the cleaning water generation unit 90 into the space S. As shown in Figure 3, the cleaning water supply unit 91 is fixed to the back surface of the upper edge 32 of the tank body 30 and supplies cleaning water toward the wall surface 11 of the bathroom 10, the bathtub pan 21, the tank body 30, and the apron 33. The cleaning water supply unit 91 has multiple supply ports (not shown) to supply cleaning water in multiple directions. In Figure 3, for the sake of easier understanding of the invention, the solenoid valve 82, sensor 86, control unit 88, and cleaning water generation unit 90 are omitted from the description, and the cleaning water is indicated by an arrow.

[0044] [5. Operation of the drainage system] The cleaning operation using the drainage device 80 will be explained.

[0045] First, when a user operates a switch (not shown), the control unit 88 switches to cleaning mode. At this time, the solenoid valve 82 opens the branch pipe 94, and tap water flows into the cleaning water generation unit 90 through the branch pipe 94. The cleaning water generation unit 90 imparts a cleaning effect to tap water to generate cleaning water. The generated cleaning water is supplied from the cleaning water supply unit 91 to the walls 11 of the bathroom 10, the bathtub pan 21, the back surface of the tub body 30, the side of the apron 33 facing the tub body 30, etc., to clean each part.

[0046] Furthermore, since the cleaning water removes dirt through its applied cleaning action and prevents dirt from adhering, it is sufficient to supply it at a flow rate and water pressure that is just enough to come into contact with the object to be cleaned.

[0047] The cleaning water, which comes into contact with the underside of the tank body 30 and the apron 33, and cleans each part, passes over the top surface of the bathtub pan 21, flows from the bathtub pan drain 211 into the drain trap 54 (drain pipe 50), and is discharged to the sewer. At this time, the water seal stored in the water seal forming section 66 is replaced by the cleaning water, and the cleaning water comes into contact with the entire inner surface of the drain trap 54. In addition, dirt tends to accumulate particularly on the water surface of the water seal inside the drain trap 54, but the water level temporarily rises due to the inflow of cleaning water, allowing the cleaning water to come into contact with the vicinity of the water surface of the water seal and clean it.

[0048] The cleaning water discharged from the drain trap 54 is then discharged into the sewer system, coming into contact with the downstream piping.

[0049] [6. Effects] In the drainage device 80 described above, it is possible to clean the walls 11 of the bathroom 10, the bathtub pan 21, the back surface of the tub body 30, and the side of the apron 33 on the tub body 30 side within the space S. Furthermore, since the cleaning water that flows through the bathtub pan 21 merges with the drainage pipe 50, the drainage device 80 of the present invention can also clean the drainage pipe 50 with the cleaning water.

[0050] Furthermore, by supplying the cleaning water within space S, there is no risk of the cleaning water coming into contact with the user. Therefore, consideration of the effects of the cleaning water's components and concentration on the human body becomes unnecessary, making it possible to improve cleaning performance by adjusting the components and concentration.

[0051] [7. Variant] The following describes some modifications of the present invention. In each modification, the same reference numerals are used for components identical to those in the drainage device 80 according to the above embodiment, and their descriptions are omitted.

[0052] [7-1. Variation 1] As shown in Figure 4, the drainage device 80A has a different configuration of the cleaning water supply unit 91A compared to the drainage device 80. Specifically, in the drainage device 80A, a spray nozzle (not shown) is attached to the cleaning water supply unit 91A, and the cleaning water that passes through this spray nozzle is supplied in a mist form to the wall surface 11 of the bathroom 10, the bathtub pan 21, the back surface of the tub body 30, the side of the apron 33 on the tub body 30 side, etc. As a result, in the modified example 1, the cleaning water is reliably brought into contact with the object to be cleaned within the space S. Alternatively, a nozzle with multiple holes may be attached instead of a spray nozzle.

[0053] [7-2. Variation 2] As shown in Figure 5, the drainage device 80B has a different configuration of the cleaning water supply unit 91B compared to the drainage device 80. Specifically, in the drainage device 80, cleaning water was supplied from one location, but in the drainage device 80B, two cleaning water supply units 91B are formed, one of which is located between the wall surface 11 of the bathroom 10 and the tank body 30. In this modified example, by supplying cleaning water from each cleaning water supply unit 91B, it becomes possible to supply cleaning water to places where it is difficult to apply cleaning water, and cleaning water reliably comes into contact with the object to be cleaned within the space S. Note that there may be three or more cleaning water supply units 91B, and there are no limitations on the positions in which they are formed.

[0054] [7-3. Variation 3] As shown in Figure 6, the drainage device 80C may be installed in a bathroom 10C that does not have a bathtub pan. In this case, it is desirable that the cleaning water supplied from the cleaning water supply unit 91C be discharged through grooves or trough-like structures (not shown) formed in the bathtub 30 or apron 33.

[0055] [7-4. Other variations] The present invention is not limited to the embodiments described above, and within the scope of the spirit of the invention, various modifications that a person skilled in the art could conceive of may be applied to the above embodiments, or forms constructed by combining components from different embodiments may also be included within the scope of one or more embodiments.

[0056] In the above embodiment, the drain trap was a water-sealing type drain trap having a water-sealing section, but it may also be a non-water-sealing type drain trap using a backflow prevention valve or the like. Furthermore, the shape of the water-sealing type drain trap is not limited to the S-type drain trap; it can be a bowl-shaped drain trap, an odor-proof pipe-type drain trap, a bottle-shaped drain trap, a drum-shaped drain trap, etc.

[0057] Furthermore, the location of the cleaning water supply unit is not limited to the above embodiment; it may be placed on the bathtub pan or attached to the apron, etc. Also, the direction in which the cleaning water is supplied may be appropriately determined depending on the location of the cleaning water supply unit. For example, if the cleaning water supply unit is placed on the bathtub pan, it is desirable that the cleaning water supply unit supplies the cleaning water upwards.

[0058] Furthermore, the drain opening of the bathtub pan may be equipped with a collection member to collect the dirt and other debris that has been washed away.

[0059] Furthermore, in the above embodiment, the cleaning water was generated by supplying tap water from a branch pipe that branched off from the water supply pipe. However, the cleaning water does not necessarily have to be generated from tap water; for example, the user may directly store the cleaning water in a tank or the like. [Explanation of Symbols]

[0060] 10 Bathroom 11 Wall surface 20 Waterproof trays 21 Bathtub pan 211 Bathtub drain 22 Washing area pan 221 Drain in the washing area pan 30 Tank body 31 Drain 32 Upper edge 33 Apron 50 Drainage piping 51 Drainage outlet component 52 Nut component 53 Bellows packing 54 Drain trap 541 Drainer 542 Trap body 543 Branch pipe 544 Outlet 545 Water seal wall 546 Drain Plate 55 Water seal formation part 60 Operating device 61 Support part 62 Operation section 63 Locking mechanism 631 Locking shaft 64 Transmission section 65 Guidance part 66 Bottle lid 70 Control unit piping 80, 80A, 80B, 80C drainage equipment 82 Solenoid valve 86 Sensors 88 Control Unit 90 Washing water generation unit 91, 91A, 91B, 91C Washing water supply unit 94 Branch piping

Claims

1. A bathroom with a waterproof tray, A tank placed on the aforementioned waterproof pan, An apron covering the side of the tank body, A washing water generating unit that generates washing water having a washing action, It includes a washing water supply unit that supplies washing water, The drainage device is characterized in that the washing water supply unit is located in a space partitioned by the back surface of the tank body and the apron.

2. The aforementioned waterproof tray is A washing area pan that forms the washing area, The drainage device according to claim 1, characterized in that it has a bathtub pan on which the tank body is placed.

3. The aforementioned washing water supply unit is The drainage device according to claim 1, characterized in that cleaning water is supplied so as to come into contact with the apron or the waterproof pan.

4. The aforementioned washing water supply unit is The drainage device according to any one of claims 1 to 3, characterized in that the washing water is supplied in a mist form.

5. The aforementioned washing water supply unit is The drainage device according to any one of claims 1 to 3, characterized in that cleaning water is supplied from the aforementioned multiple locations.

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