JP2003129540A - Drain pipe system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To overcome a problem such that drainage sometimes flows into another horizontal branch pipe over a vertical drainpipe, when the drainage is discharged into the vertical drain pipe from drainage equipment via a horizontal branch pipe, in a drain pipe system which is connected to the vertical drain pipe by the horizontal branch pipe arranged from the drainage equipment, provided on a floor, via an underfloor level. SOLUTION: In this drain pipe system, horizontal bent parts 10 and 12 are provided in the horizontal branch pipe 5, so that a flow velocity of a drainage flow can be decreased in the bent parts 10 and 12, and so that the force of water can be abated. Thus, the drainage is prevented from flowing into another horizontal branch pipe 8 over the vertical drain pipe 6.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a drainage pipe system.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, when a drainage facility 100 such as a flush toilet is installed in each dwelling unit in a multi-story building such as an apartment house, a drainage pipe system 101 is provided for this purpose. , The following piping is used. That is,
This drainage pipe system 101 has a horizontal branch pipe 103 piped from a drainage facility 100 to a level below the floor via a bend 102 and the like, and the tip of the horizontal branch pipe 103 is built along the height direction of the building. It is connected to the vertical drain pipe 104.

In such a drainage pipe system 101, a vertical drainage pipe 104 is provided with a drainage collecting pipe 105 corresponding to each floor.
Are connected to the drainage collecting pipe 105. By the way, another horizontal branch pipe 107 may be connected to the drainage collecting pipe 105 in order to allow the drainage from other than the drainage facility 100 to flow in. In the drainage pipe system 101 of the illustrated example, both the lateral branch pipes 103 and 107 are at the same level with respect to the drainage collection pipe 105, and are symmetrically arranged with the drainage collection pipe 105 in between (that is, the pipe axes are the same). It has been positioned linearly).

Further, FIG. 8 shows another drainage pipe system 101, in which a dogleg-shaped bent pipe 108 is provided on a lateral branch pipe 103 connecting the drainage facility 100 and the drainage collecting pipe 105. It is a thing. The horizontal branch pipe 103 and the other horizontal branch pipe 107 are also at the same level, and the drainage collecting pipe 1
It is arranged symmetrically across 05.

[0005]

When a plurality of horizontal branch pipes 103, 107 are connected to the drainage collecting pipe 105 as described above, the horizontal branch pipes 103, 107 are at the same level, When the drainage collecting pipe 105 is arranged symmetrically with respect to the drainage collecting pipe 105, the drainage flowing into the drainage collecting pipe 105 from one of the lateral branch pipes (for example, 103 side) is overpowered to the other lateral branch pipe (in the above case, In some cases, so-called backflow occurred in the lateral branch pipe (107) that flowed into the side branch pipe (107).

The drainage pipe system 101 shown in FIG.
Then, although the lateral branch pipe 103 has the bent pipe 108, since the bent pipe 108 has an obtuse angle and has one bending component, the drainage flow flows in a substantially straight line in the pipe, resulting in The drainage flowing into the drainage collecting pipe 105 flowed into the other side branch pipe 107 side by force. As described above, as shown in FIGS. 7 to 8, when the drainage facility 100 temporarily flows a large amount of drainage, such as a flush toilet or a bathtub, other horizontal branch pipes to the horizontal branch pipe 103 (see FIG. In the case of 107), the tendency tends to occur frequently.

The present invention has been made in view of the above circumstances, and when the drainage is discharged from the drainage equipment to the vertical drainage pipe through the lateral branch pipe, the drainage exceeds the vertical drainage pipe and other It is an object of the present invention to provide a drainage pipe system that does not flow into a lateral branch pipe.

[0008]

In order to achieve the above object, the present invention takes the following means. That is, the drainage pipe system according to the present invention is connected to a vertical drainage pipe by a horizontal branch pipe that is piped from a drainage facility provided on the floor through an underfloor level. The lateral branch pipe is provided with a bent portion in the left-right direction. If the lateral branch pipe is provided with a bent portion in the left-right direction in this way, the flow velocity of the drainage flow decreases at this bent portion, and the water force drops. It does not flow into the pipe.

The bent portion is in the left-right direction (in the horizontal plane).
Since it is bent, the height of the piping space will not be unnecessarily high. The bent portion is within an obtuse angle (90 °
It is preferable that it is bent at (including). It has been confirmed by experiments that by doing so, the effect of preventing drainage from flowing into other lateral branch pipes is high. Further, the bent portion may be configured such that the pipe axes of the primary side pipe connected to the drainage facility side and the secondary side pipe connected to the vertical drainage pipe side are eccentric in the left-right direction.

In this case, the bent portion may include two or more V-shaped bends.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a drainage pipe system 1 according to the present invention. In the drainage pipe system 1 of the first embodiment, a horizontal branch pipe 5 is piped from a drainage facility 2 such as a flush toilet to an underfloor level via a bend 3 or the like, and the end of the horizontal branch pipe 5 is connected to a building height. A vertical drainage pipe 6 built along the vertical direction is connected via a drainage collecting pipe 7.

Further, another drainage facility 9 is connected to the drainage collecting pipe 7 through another horizontal branch pipe 8. Both side branch pipes 5 and 8 are at the same level with respect to this drainage collecting pipe 7,
In addition, the drainage collecting pipes 7 are arranged symmetrically with each other (that is, they are positioned linearly with the pipe axes aligned). For the basic structure of these (particularly the vertical positional relationship), refer to FIG. 6 used in the description of the prior art. Then, in the drainage pipe system 1 according to the present invention, the lateral branch pipe 5 has the first bent portion 10, the straight portion 11, and the second bent portion 12.

The first bent portion 10 and the second bent portion 12 are formed by using an elbow that bends at an angle within the obtuse angle (90 ° in the illustrated example). The first bent portion 10 has a left bend along the drainage direction from the drainage facility 2 side toward the vertical drainage pipe 6, and the second bent portion 12 also has a left bend. Therefore, as a whole of the lateral branch pipe 5,
It is designed to have a planar U-shape. Like this first
With the lateral branch pipe 5 having the bent portion 10 and the second bent portion 12, the drainage flow flowing in the lateral branch pipe 5 is the first bent portion 10
Each time it passes through or inside the second bent portion 12, the flow velocity decreases and the water force drops.

Therefore, this drainage does not flow over the drainage collecting pipe 7 in the standing drainage pipe 6 and flow into the other lateral branch pipe 8 side. The first bent portion 10 and the second bent portion 12 are
Since both are bent in the left-right direction (in the horizontal plane),
The height of the piping space will not unnecessarily increase.
FIG. 2 shows a second embodiment of the drainage pipe system 1 according to the present invention. Drainage pipe system 1 according to the second embodiment
However, the difference from the first embodiment is that the lateral branch pipe 5 connecting the drainage facility 2 and the drainage collecting pipe 7 of the vertical drainage pipe 6 is connected.
However, the first straight portion 1 extending leftward from the drainage facility 2
6, right-handed bent portion 17, the second toward the drainage collecting pipe 7
The point is that it has a straight portion 18.

An elbow that bends at an angle within an obtuse angle (90 ° in the illustrated example) is used for the bent portion 17. Therefore, in the drainage pipe system 1 of the second embodiment, the lateral branch pipe 5 has a plane L shape as a whole. The drainage flow flowing in the lateral branch pipe 5 is bent 16
It is the same as the case of the first embodiment that the water force is reduced due to the decrease in the flow velocity when passing through the inside. Figure 3
3 shows a third embodiment of the drainage pipe system 1 according to the present invention.

In the drainage pipe system 1 of the third embodiment, a primary side pipe 20 connected to the drainage facility 2 side is provided as a lateral branch pipe 5 connecting the drainage facility 2 and the drainage collecting pipe 7 of the vertical drainage pipe 6. And a secondary side pipe 21 connected to the vertical drainage pipe 6 side, a bent portion 22 for eccentricizing the mutual pipe axes in the left-right direction is provided. The bent portion 22 is formed as a short tubular shape in which two or more V-shaped bends are connected in a left-right direction and are connected and integrated. In addition, in the bent portion 22 of the illustrated example, both the bent angles of the V-shape are obtuse angles, but this is not a limitation, and the angles may be within the obtuse angle (including 90 °). In the third embodiment, the amount of eccentricity due to the bent portion 22 is about 50 mm.

Therefore, also in the drainage pipe system 1 of the third embodiment, the drainage flow flowing in the lateral branch pipe 5 has a bent portion 22.
It is the same as the case of the first embodiment that the water force is reduced due to the decrease in the flow velocity when passing through the inside. Figure 4
4 shows a fourth embodiment of the drainage pipe system 1 according to the present invention. In the drainage pipe system 1 of the fourth embodiment, the horizontal branch pipe 5 that connects the drainage facility 2 and the drainage collecting pipe 7 of the vertical drainage pipe 6 has a piping route similar to that of the first embodiment. ing. That is, the lateral branch pipe 5 has a left bent first bent portion 10, a straight portion 11, and a left bent second bent portion 12, and the lateral branch pipe 5 as a whole has a planar U-shape. It takes on a shape.

Therefore, it is of course possible to obtain the effect that the drainage flow flowing in the lateral branch pipe 5 has a reduced flow velocity when passing through the first bent portion 10 and the second bent portion 12, and the water force drops. Then, the drainage pipe system 1 of the fourth embodiment is
The difference from the drainage pipe system 1 of the first embodiment is that the direction of connection of the other lateral branch pipe 8 to the drainage collection pipe 7 is a horizontal connection that connects between the drainage facility 2 and the drainage collection pipe 7 of the vertical drainage pipe 6. The branch pipe 5 and the branch pipe 5 have a 90 ° crossing relationship. Therefore, due to this difference in connection direction, the effect that the drainage from the side branch pipe 5 side never flows over the standing drainage pipe 6 (drainage collecting pipe 7) into the other side branch pipe 8 is obtained.

FIG. 5 shows a drain pipe system 1 according to a fifth embodiment of the present invention. Also in the drainage pipe system 1 of the fifth embodiment, as the lateral branch pipe 5 that connects the drainage facility 2 and the drainage collecting pipe 7 of the vertical drainage pipe 6, the first bent portion 10 and the straight portion 11 with a left bend. And the second turn left
The lateral branch pipe 5 as a whole has a U-shape in plan view. Also,
The direction of connection of the other lateral branch pipe 8 to the drainage collecting pipe 7 has a 90 ° cross relationship with the lateral branch pipe 5 connecting the drainage facility 2 and the drainage collecting pipe 7 of the vertical drainage pipe 6. .

Therefore, substantially the same action and effect as those of the above-described fourth embodiment can be obtained. By the way, the present invention
Other than the above-described respective embodiments, it is possible to appropriately change according to the embodiments. For example, the drainage facility 2 is not limited to a flush toilet bowl. Further, in each embodiment, the drainage collecting pipe 7 is a [two-way type] having two branch pipe connecting portions, but may be a [three-way type] or a [four-way type].

[0021]

As is apparent from the above description, in the drainage pipe system according to the present invention, when the drainage is discharged from the drainage equipment to the vertical drainage pipe through the lateral branch pipe, this drainage raises the vertical drainage pipe. It is prevented from flowing over and flowing into another lateral branch pipe.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a drainage pipe system according to the present invention.

FIG. 2 is a plan view showing a second embodiment of the drainage pipe system according to the present invention.

FIG. 3 is a plan view showing a third embodiment of the drainage pipe system according to the present invention.

FIG. 4 is a plan view showing a fourth embodiment of the drainage pipe system according to the present invention.

FIG. 5 is a plan view showing a fifth embodiment of the drainage pipe system according to the present invention.

FIG. 6 is a side sectional view showing a toilet using a conventional drainage pipe system.

FIG. 7 is a plan sectional view corresponding to FIG.

FIG. 8 is a plan cross-sectional view showing another example of a toilet using a conventional drainage pipe system.

[Explanation of symbols]

1 Drainage system 2 drainage 5 Horizontal branch pipe 6 Vertical drain pipe 10 First bend 12 Second bend 17 Bend 20 Primary side tube 21 Secondary side tube 22 Bend

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Yagi             7-22, Minamienkajima, Taisho-ku, Osaka City, Osaka Prefecture             No. KUBOTA Co., Ltd. Ongashima Plant F term (reference) 2D061 AA04 AA05 AB04 AC07

Claims (4)

[Claims] 1. A drainage pipe system in which a drainage facility (2) provided on a floor is connected to a vertical drainage pipe (6) by a horizontal branchpipe (5) piped through an underfloor level, wherein the horizontal branchpipe (5). ) To the left and right bends (10, 12)
(17) (22) is provided, The drainage pipe system characterized by the above-mentioned. 2. The bent portions (10, 12) (17) (2)
2. The drainage pipe system according to claim 1, wherein 2) is bent at an angle within an obtuse angle. 3. The drainage equipment (2) for the bent portion (22).
The pipe axes of the primary side pipe (20) connected to the side and the secondary side pipe (21) connected to the side of the vertical drainage pipe (6) are eccentric to each other in the left-right direction. The drainage pipe system according to claim 1 or claim 2. 4. The drain pipe system according to claim 1, wherein the bent portion (22) includes two or more V-shaped bends.