JP7337424B1 - Drainage structures and drainage systems - Google Patents

Abstract

An object of the present invention is to provide a drainage structure, etc., which can be laid out freely when installing the drainage structure, and can handle a large amount of drainage. [Solution] A drainage structure 10 is a drainage structure 10 provided under a bathtub 20, and includes a drainage groove 11 into which water discharged from a drainage port 20H of the bathtub 20 flows, and a drainage groove 11 integrally molded with a plastic material. The drainage groove 11 and the drainage pit 12 include a drainage pit 12 that is provided in the drainage pit 12 and a drainage outlet 10H provided in the drainage pit 12, and the drainage groove 11 and the drainage pit 12 have a substantially T-shape, a substantially L-shape, a substantially I-shape, or any of these shapes in plan view. It is formed into a combined shape. [Selection diagram] Figure 1

Description

Article 30, Paragraph 2 of the Patent Law applies March 8, 2022 Published on the website of Daiwa Kasei Co., Ltd.

The present invention relates to a drainage structure provided in a bathroom in which a bathtub is installed and a drainage system for a unit bath (system bath) provided with this drainage structure.

The techniques described in Patent Documents 1 to 3 are known as drainage structures for treating drainage from a bathtub installed in a bathroom.

For example, Patent Literature 1 describes a bathroom floor structure that aims to increase the capacity of a drainage pit in a bathroom without being restricted by installation workability. In this bathroom floor structure, a pedestal 3 is installed at the bottom of a bathroom floor 1a, and a floor laying body 2 is laid on the pedestal 3. As shown in FIG. A drainage pit 4 is installed along one side of the floor covering 2 so as to extend from one end of the bathroom 1 to the other. They are separated from each other and supported by a frame independently of each other (see FIG. 1 of Patent Document 1).

On the other hand, Patent Literature 2 describes a drain trap for a bathroom unit. This drain trap is a cylindrical drain trap with a bottom attached to the floor of the washing area of the bathroom unit, and has a cylindrical water storage part with an open top and a closed bottom end.

Further, Patent Document 3 describes a drainage structure for a unit bath. The drainage structure of this unit bath consists of a drainage elbow 8 provided on the bathtub side pan 3 where the bathtub 5 is installed, a drainage trap 9 provided on the faucet 14 side of the wash pan 4 where the washing area is formed, and a door. A door under-drain groove 12 is provided at the bottom. A drain pipe 10 connecting the drain elbow 8 and the drain trap 9 is connected to a drain pipe 12 whose one end is connected to the drain groove 7 (see FIG. 1 of Patent Document 3). ).

JP 2020-059994 A Japanese Patent Application Laid-Open No. 2004-183411 Japanese Patent Application Laid-Open No. 2002-061249

However, the technology related to bathroom drainage is required to be able to freely lay out the drainage structure and to be able to handle a large amount of drainage. For example, in recent years, mechanical bathtubs (nursing care bathtubs) have become popular, and bathtubs with a large amount of drainage are being used not only in nursing facilities such as hospitals and nursing homes, but also in general households.

In view of such problems, the bathroom floor structure described in Patent Document 1 has a drain pit installed so as to extend from one end of the bathroom to the other end in one direction. It is not possible to freely lay out the drainage pit because it is necessary, or the location and direction of installation of the drainage pit are limited. The drain trap described in Patent Document 2 is intended to suppress an increase in the number of parts in the bathroom unit, and the unit bath drain structure described in Patent Document 3 is designed to prevent the bathtub side pan from becoming dirty due to water under the door. Since the purpose is to

Therefore, the present invention provides a drainage structure and a drainage system that can be laid out freely when the drainage structure is provided and can handle a large amount of drainage.

A drainage structure according to the present invention is a drainage structure provided under a bathtub, and includes a drainage groove into which water discharged from a drain port of the bathtub flows, a drainage pit integrally molded with the drainage groove from a plastic material, and a drainage. The drain groove and the drain pit are formed in a substantially T-shape, a substantially L-shape, a substantially I-shape, or a combination thereof in plan view.

As a result, the shape of the drain structure can be freely formed, and the water discharged from the drain port of the bathtub flows into the drain pit through the drain groove, where it is stored and drained under the floor.

Also, the drain pit is built into the floor of the bathroom and preferably has a bottom surface that is lower than the floor of the bathroom. Thereby, a sufficient depth (height) of the drainage pit can be ensured, and as a result, a sufficient capacity of the drainage pit can be ensured.

Moreover, it is preferable that the drainage structure is provided substantially directly under (substantially directly under) the bathtub. As a result, the water can be efficiently drained to the underfloor in a short distance.

The drainage system of the present invention is a drainage system for a unit bath including a bathtub pan, a washing pan, and these drainage structures.

Since the drainage structure according to the present invention can be freely formed in shape due to such a configuration, it can be laid out freely in any bathroom. In addition, the water discharged from the drain port of the bathtub flows into the drain pit through the drain channel, where it is stored and drained under the floor, so that a large amount of waste water can be treated.

In addition, the drainage pit is built into the floor of the bathroom, and the bottom is positioned lower than the floor of the bathroom. Since the capacity of the pit can be sufficiently secured, it is possible to treat a larger volume of wastewater.

Further, by providing the drainage structure substantially directly under the bathtub, it is possible to efficiently drain water to the underfloor in a short distance, so that the drainage treatment performance can be further improved.

1 is a schematic front view of a drainage structure according to an embodiment of the present invention; FIG. 1 is a schematic plan view of a drainage structure according to an embodiment of the invention; FIG. It is a schematic front view of the drainage structure which concerns on another embodiment of this invention. It is a schematic front view of a conventional drainage structure. 1 is a schematic plan view of a conventional drainage structure; FIG. 1 is a schematic plan view of a drainage structure according to an embodiment of the invention; FIG. It is a diagram for explaining the drainage treatment of the drainage structure, (A) is a diagram for explaining the drainage treatment of the drainage structure having a T-shaped plan view, and (B) is a diagram for explaining the drainage treatment of a drainage structure having an L-shaped plan view. It is a figure for demonstrating the drainage treatment of a drainage structure. It is a diagram for explaining the drainage treatment of the drainage structure, (A) is a diagram for explaining the drainage treatment of the drainage structure having an I-shaped plan view, and (B) is a diagram for explaining the drainage treatment of a conventional drainage ditch. It is a figure for explaining. It is a figure for demonstrating the drainage structure which concerns on other embodiment of this invention, (B) is the figure which expanded the dotted-line frame part of (A).

Embodiments of the present invention will be described in detail below. is not limited to the contents of

[Drainage structure]
FIG. 1 is a schematic front view of a drainage structure according to an embodiment of the invention, and FIG. 2 is a schematic plan view of the drainage structure according to an embodiment of the invention. As shown in FIGS. 1 and 2, a drainage system 100 for a unit bath according to an embodiment of the present invention includes a bathroom floor (waterproof pan) 50 including a bathtub pan 52 and a washing area pan 53, a bathtub 20, a drain a structure 10; The bathtub 20 is installed in the bathroom of the unit bath, and is, for example, a mechanical bathtub (nursing care bathtub).

Unit baths are mainly provided in buildings such as general houses, hospitals and nursing homes. Therefore, in the present embodiment, the drainage system 100 is provided inside the building (the space separated by the building wall 71 and the building floor 72). As shown in FIG. 1, a bathroom floor 50 and a bathtub wall 51 are provided in the building by height adjustment legs 10L. A bathtub pan 52 in which the bathtub 20 is installed and a washing place pan 53 for the user to wash his/her body are provided.

The bathtub 20 has fixed legs 20L and is installed on the bathtub pan 52. - 特許庁Further, the bathtub 20 has a drain port 20H, through which water (wastewater) in the bathtub 20 is discharged.

On the other hand, the drainage structure 10 is provided below the bathtub 20, and includes a drainage groove 11 into which the drainage discharged from the drainage port 20H of the bathtub 20 flows, and a drainage pit 12 integrally molded with the drainage groove 11 from a plastic material. including. The drainage pit 12 is provided with one or more drainage ports 10H. The plastic material is particularly preferably FRP (reinforced fiber plastic).

In addition, the drain groove 11 and the drain pit 12 are T-shaped (see FIG. 7(A)), L-shaped (see FIG. 7(B)), and I-shaped (see FIG. 8(A)) in plan view. Alternatively, it is formed into a shape (not shown) in which these are combined. In the example shown in FIGS. 1 and 2, the drainage groove 11 and the drainage pit 12 are formed in a T shape (see FIG. 2). Note that if the integrally molded drain groove 11 and drain pit 12 have a plan view shape that looks like a T-shape or an L-shape, for example, if the length and width are not uniform, the length and width of the drain groove 11 and the drain pit 12 are not uniform. Characters may not be evenly balanced. Examples of shapes in which T-shapes, L-shapes, and I-shapes are combined include approximately H-shape (a shape in which T-shapes are combined) and approximately U-shape (a combination of L-shape and I-shape). combined shape) and the like.

In this embodiment, the drainage pit 12 is provided with three drainage ports 10H (drainage ports 10H1, 10H2, and 10H3) (see FIG. 2). When the drainage structure 10 is L-shaped in plan view (see FIG. 7B), the drainage pit 12 is provided with two drainage ports 10H (drainage ports 10H1 and 10H2).

On the other hand, when the planar view shape of the drainage structure 10 is I-shaped (see FIG. 8A), the drainage pit 12 is provided with one drainage port 10H.
FIG. 8(B) is a diagram for explaining the conventional drainage treatment of a drainage ditch. The conventional drainage ditch 31 can handle a normal amount of drainage, but if the amount of drainage is large, Drainage overflows from the drainage ditch 31 with momentum.

As a typical configuration example of the drainage structure 10, when the plan view shape of the drainage structure 10 is T-shaped, the standard shape of the long side of the drainage ditch 11 is about 80 cm long, and the long side of the drainage pit 12 is about 80 cm long. The standard shape of is about 120 cm in length. Such a configuration can be appropriately changed in design, such as making it shallower and wider so as not to get in the way, depending on the configuration of the underfloor such as beams and installed objects on which the drainage structure 10 (drainage groove 11) is provided.
On the other hand, at this time, the volume of the drainage pit portion is about 50L.

Here, the wastewater treatment capacity of general bathtubs currently manufactured and sold is about 50 L/min. It is about min.
On the other hand, in the case of the typical configuration example described above, the drainage structure according to the present invention requires a drainage pit usage volume of about 2 L when a drainage treatment capacity of 100 L/min is required. Moreover, when the wastewater treatment capacity is required to be 450L/min, the necessary wastewater pit use volume is about 36L. Of course, the configuration example is just an example, and the design can be changed as appropriate according to the required drainage capacity. Therefore, the drainage structure according to the present invention is sufficiently equipped with the required drainage treatment capacity for any type of bathtub with a large amount of drainage.

Of course, such wastewater treatment capacity varies depending on the shape of the T-type drainage mechanism, L-type drainage mechanism, I-type drainage mechanism, or a combination of these. The width, depth of the drainage pit, etc. are designed. In addition, since the wastewater treatment capacity varies depending on the position and number of drain ports provided in the drain pit, the type and amount of wastewater of the bathtub in which the drain structure according to the present invention is installed, the layout of the bathroom, etc. should be considered comprehensively. Therefore, they can be designed appropriately.

Moreover, the drainage groove 11 is inclined so that the drainage that has flowed in from the drainage port 20H of the bathtub 20 flows toward the drainage pit 12 (see FIG. 1).
The waste water discharged from the drain port 20H of the bathtub 20 flows into the drain groove 11, flows into the drain pit 12 along the inclined direction, and is sent to the drain pipe 40 from the drain port 10H. The waste water sent to the drain pipe 40 is treated at a sewage treatment plant after being sent to the sewage system (sewage pipe) managed by municipalities or the like.

In addition, as shown in FIG. 2, in the bathroom, a drainage ditch 60 is provided in front of the bathtub for treating the drainage from the washing area (washing area pan 53) such as a shower. Furthermore, a drain 60 is also provided near the entrance (door D) of the unit bath.

FIG. 3 is a schematic front view of the drainage structure according to the embodiment of the invention. As shown in FIG. 3, the drain pit 12 may have a bottom surface that is lower than the bathroom floor 50 . Thereby, a sufficient depth (height) of the drainage pit 12 can be ensured, and as a result, a sufficient capacity of the drainage pit 12 can be ensured. In this case, the drainage pit 12 can be configured to be incorporated into the floor 50 of the bathroom.

Here, FIG. 4 is a schematic front view of a conventional drainage structure, and FIG. 5 is a schematic plan view of the conventional drainage structure. In FIGS. 4 and 5, portions showing the same configuration as in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted. The same applies to FIGS. 5 to 9 as well.

In the conventional drainage structure, as shown in FIGS. 4 and 5, the drainage discharged from the drainage port 20H of the bathtub 20 flows into the drainage groove 31 and is sent to the drainage pipe 40 from the drainage port 10H. The drainage groove 31 is installed on the floor surface 52 with an inclination provided by the height adjustment leg 31L. A drainage ditch 31 extends across the bathroom so that a large amount of waste water can be treated (see FIG. 5).

However, with such a conventional drainage structure, as can be clearly seen from FIG. On the other hand, the drainage structure 10 is provided under the bathtub 20 as a separate body from the drainage ditch 60 that treats the drainage from the washing area (for treating the drainage from the bathtub 20). It can be installed in any place according to the place of installation (the position of the drain port 20H of the installed bathtub B).

For example, as shown in FIG. 6, even if the place where the bathtub 20 is installed or the direction of the installed bathtub 20 is changed, the drainage structure 10 can be provided according to the place of the bathtub 20 . Thus, the bathtub 20 and the drainage structure 10 can be freely laid out in the bathroom.

At the same time, the direction of the water gradient in the bathroom (for example, whether it slopes toward the center of the bathroom or toward one end of the bathroom) can be freely laid out. For example, it can be laid out so that the drainage pit 12 of the drainage structure 10 is positioned ahead of the slope.

In addition, since the drain ditch 60 for treating the waste water from the washing place (the washing place pan 53) and the drainage structure 10 for treating the waste water from the bathtub 20 are separated, the waste water overflows the washing place 21 due to clogging with foreign matter, and the resulting odor. Diffusion can be prevented. In particular, when the bathtub 20 is a mechanical bathtub, wastewater is often mixed with waste. Therefore, it is desirable to physically separate the wastewater from the mechanical bathtub and the wastewater from the washing area 21 .

The drainage pit 12 is preferably designed to have a large capacity by making it deeper, longer and wider than the drainage groove 11 . A large amount of waste water can be treated by this configuration and the configuration in which the drainage structure 10 described later has a T-shaped or L-shaped configuration.
If a drainage pit is simply formed under the bathtub 20, it is difficult to drain water because there is no slope. The drained water can be smoothly drained to the underfloor (drainage pipe 40).

Furthermore, it is desirable that the drainage structure 10 be provided immediately below the bathtub 20 (so that the drainage structure 10 is almost hidden by the bathtub 20 in plan view). As a result, the water can be efficiently drained to the underfloor in a short distance.

[Wastewater treatment]
7A and 7B are diagrams for explaining the drainage treatment of the drainage structure. FIG. 7A is a diagram for explaining the drainage treatment of the drainage structure having a T-shaped plan view, and FIG. It is a figure for demonstrating the drainage treatment of L-shaped drainage structure. Arrows indicate the flow of wastewater discharged from the drain port 20H of the bathtub 20. As shown in FIG.

The waste water discharged from the drain port 20H of the bathtub 20 passes through the drain groove 11 and flows into the drain pit 12, as shown in FIG. 7(A). Then, it is discharged under the floor from the drain port 10H2. Also, when a large amount of waste water is discharged from the drain port 20H, not all of it is discharged from the drain port 10H2, but hits the wall surface of the drain pit 12 and hits the end of the drain pit 12 (the end where the drain port 10H1 is provided). It flows into the other end (the end provided with the drain port 10H3). Then, it is discharged under the floor through the drain port 10H1 and the drain port 10H3.

In addition, since the drainage that has flowed into the one end and the other end hits the walls of the one end and the other end and tries to return further, a circulating flow (eddy) is generated at the drainage port 10H1 and the drainage port 10H3, and the drainage flows into the drainage port 10H1 and the drainage port. Makes it easier to get sucked into 10H3.

In addition, since the drainage that hits the wall surface of the drainage pit 12 loses momentum, even if a large amount of drainage flows into the drainage pit 12 at once, it is possible to prevent backflow to the drainage groove 11 side.

As described above, the drainage structure 10 is T-shaped, and a plurality of drainage ports 10H are provided in the drainage pit 12, so that a large amount of drainage can be treated. On the other hand, in the case of the L-shaped shape shown in FIG. 7(B) or the I-shaped shape shown in FIG. can do. Specifically, as a measured value, about 300 L of bathtub drainage can be treated in about 3 minutes.

9A and 9B are diagrams for explaining a drainage structure according to another embodiment of the present invention, and FIG. 9B is an enlarged diagram of the dotted line frame portion of FIG. As shown in FIGS. 9A and 9B, the drainage structure 10 can be provided with reinforcing means F. FIG. Moreover, as shown in FIG. 9B, the drainage pit 12 can be further provided with a pit cover 12C.

The reinforcing means F is, for example, a stainless steel frame. A stainless steel frame is provided to reinforce the inside of the drainage pit 12 .
Here, the outer side of the drain pit 12 is covered with a reinforcing plate made of FRP around the entire circumference. Therefore, it has a high rigidity and, for example, a thickness of 10 mm or more compared to a normal drainage ditch. Because of such rigidity, a stainless steel frame, grating, or the like can be placed on the drainage pit 12 . Since a stainless steel frame, grating, etc. can be placed, problems such as breakage and deformation do not occur even when a stretcher passes over the drainage pit 12 or when a heavy bathtub straddles the drainage pit 12.例文帳に追加

A stainless steel frame may be provided in the drain groove 11 . By providing a stainless steel frame in the drainage groove 11 (see FIG. 9), edge deformation of the drainage groove 11 can be prevented.

Thus, since the drainage pit 12 itself has rigidity, it is not necessary to provide an adjuster under the drainage pit 12, and as a result, a larger volume can be secured. By increasing the capacity of the drainage pit 12, when a large amount of water is discharged at one time, it is possible to drain the water under the floor while storing the water, so that a large amount of waste water can be treated.

In addition, since the drainage structure 10 can be freely laid out as described above, a part of the bathtub 20 (for example, the casters of the mechanical bathtub) does not need to straddle the pit lid 12C. Even if the caster of the mechanical bathtub straddles the pit lid 12C, the drainage pit 12 is strong enough to prevent damage and deformation.

The embodiment of the drainage structure described above is merely an example, and for example, the number and positions of the drainage ports 10H provided in the drainage pit 12 can be appropriately changed in design. In addition, the slope of the drainage groove 11, the size of the drainage groove 11, the size of the drainage pit 12, and the like can be appropriately changed in design according to the size of the bathtub 20 to be installed, the drainage amount, and the like.

[Drainage system]
The drainage structure 10 according to the embodiment of the present invention can be used in a drainage system for a unit bath in which the installed bathtub 20 is a mechanical bathtub with a large amount of drainage. In addition, since the layout can be freely arranged as described above, a unit bath in which the waterproof pan frame, frame, drainage groove, etc. are not of a fixed design is more suitable.

INDUSTRIAL APPLICABILITY The present invention provides a drainage structure and a drainage system that can be laid out freely when the drainage structure is provided and that can handle a large amount of drainage, and can be used in bathrooms in various places such as hospitals, nursing homes, and ordinary homes. Since it is a thing, it is industrially useful.

10 Drainage structure 10H, 10H1, 10H2, 10H3 Drainage outlet 10L Height adjustment leg 11 Drainage groove 12 Drainage pit 12C Pit cover 20 Bathtub 20H Drainage outlet 20L Fixed leg 31 Drainage groove in conventional drainage structure 31H Drainage outlet in conventional drainage structure 40 drain pipe 50 bathroom floor (waterproof pan)
51 Bathroom wall 52 Bathtub pan 53 Washing pan 60 Drain 71 Building wall 72 Building floor 100 Drainage system F Reinforcing means D Door

Claims (3)

a drain into which the water discharged from the drain port of the bathtub flows;
a drainage pit integrally molded of a plastic material at the tip of the direction in which the drainage groove is inclined ;
a drainage port provided in the drainage pit, wherein the drainage structure is provided in the floor pan after the drainage groove and the drainage pit are integrally molded,
The drainage groove and the drainage pit are formed to have a substantially T-shaped, substantially L-shaped, substantially I-shaped, or a combination of these shapes in a plan view ,
A drainage structure that can be arranged so that the direction in which the drainage groove is inclined can face any direction in the planar direction of the floor pan. 2. The drainage structure according to claim 1, which is provided substantially directly below the bathtub. A drainage system for a unit bath comprising a floor pan and the drainage structure according to claim 1 or 2 .

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