JPH11140931A - Drain pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain pipe which is simple in the structure and which does not require a large space and prevents shortage of the sealing water for a trap and engulfed air sound, caused by the vacuum pressure in the pipe. SOLUTION: A first elbow 10 having 90 degrees bending angle is connected to a lateral pipe 3 connected to an instrument for using water and the end thereof is obliquely tilted downward at 45 degrees to the right or left side. The tilted end and a vertical pipe 4 are joined with a second elbow 11 having 45 degrees bending angle. Drain flows don spirally in the elbows 10, 11 not to be filled in the elbows and an air passage is always formed in the elbows 10, 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pipe including a pipe joint for connecting a horizontal draw pipe connected to a water-using device such as a wash basin or a toilet and a standing pipe located below the horizontal draw pipe.

[0002]

2. Description of the Related Art Conventionally, as a piping structure for guiding drainage from water-using equipment such as a washbasin and a toilet to a sewer pipe, FIG.
There are the following. This is because the drainage from the basin (1) or the toilet (2) is led in the horizontal direction by the horizontal draw pipe (3), and is further led in the vertical direction by the vertical pipe (4) to flow into the sewer pipe. An elbow (5) having a bending angle of 90 degrees is used for connecting the horizontal drawing pipe (3) and the standing pipe (4). As shown in FIG. 5, the elbow (5) guides the drainage from the horizontal drawing pipe (3) in the horizontal direction, and then the vertical pipe (4).
To the vertical direction.

In such a piping structure, the drainage stagnates at the bent portion of the elbow (5) for switching the flow of the drainage from the horizontal direction to the vertical direction. In some cases, the drainage in the pipe may become full and the air passage in the pipe may be blocked.

Generally, as shown in FIG. 4, a water seal trap (6) for preventing odor in a drain pipe from being discharged from a drain port thereof is provided in a wash basin (1), a toilet bowl (2) and the like. However, when the drainage flows in a full state as described above, a negative pressure is generated in the pipe between the drainage and the sealing in the trap (6), thereby causing the sealing in the trap (6). Was drawn into the side of the horizontal drawing pipe (3), and sometimes the water was cut off or an air entrainment sound was generated.

Therefore, conventionally, the distal end of the ventilation pipe (7) connected to the elbow (5) or the horizontal drawing pipe (3) is opened to the outdoors,
When a negative pressure is generated in the pipe, air can be introduced into the pipe through the ventilation pipe (7),
In (7), a ventilation valve that opens using the negative pressure in the pipe, for example, a Dolgo ventilation valve is attached. Also, measures are taken to increase the diameter of the pipe more than necessary so that the drainage in the pipe does not become full.

[0006]

However, when the ventilation pipe (7) and the ventilation valve are provided as described above, the structure becomes complicated, the cost becomes high, and the piping work becomes troublesome.
Further, when the end of the ventilation pipe (7) is opened to the outside, not only does the appearance of the building deteriorate, but also there are problems such as the influence of odor leakage around the home and neighboring buildings.

Further, a ventilation pipe (7) and a ventilation valve are provided.
When the pipe diameter is increased, it is necessary to secure a space corresponding to the pipe diameter, and it is also necessary to consider construction plans.

In view of the above, it is an object of the present invention to provide a drain pipe which has a simple structure and does not require a large space, and which can prevent the trap from being out of water and the occurrence of air entrainment noise.

[0009]

Means for solving the above problems include a horizontal drawing pipe connected to water-using equipment such as a washbasin and a toilet, and a vertical drawing pipe connected to a vertical direction. A drain pipe for connecting a pipe, wherein drainage from the horizontal drawing pipe is poured into the vertical pipe while being guided obliquely downward as viewed from a side on the longitudinal extension of the horizontal drawing pipe,
It is characterized in that the drainage flowing in the pipe is in a non-full state. Here, the non-full-flow state is a state in which the inside of the pipe is not filled with drainage and an air passage is formed in the pipe.

Specifically, the first elbow and the second elbow are bent in an arc shape, and the first elbow is
One end of the second elbow is connected to the horizontal drawing tube, and the other end of the second elbow is inclined to the lower left or the lower right with respect to the one end. And the other end is disposed in the vertical direction and connected to the upright.

As a result, the flow of drainage in the first elbow is switched from horizontal to diagonally left or right downward, and the drainage smoothly flows down spirally along the inner surface of the first elbow. In the second elbow, the flow of the drainage is switched from the left or right diagonally downward to the vertical direction, and the drainage also flows smoothly without stagnation. Therefore, the drainage flowing through these elbows does not become full,
An air passage is always established in the first and second elbows.

The first elbow has a bend angle of 9 °.
The one set at 0 degrees is used, the one set at a bending angle of 45 degrees as the second elbow is used, and the other end of the first elbow is inclined 45 degrees to the left with respect to one end thereof.
By arranging so as to be inclined 45 degrees downward or 45 degrees diagonally to the right, without using a specially designed elbow,
The above operation can be achieved by using the conventional elbow as it is.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a drain pipe according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view thereof.

The pipe joint which is the drainage pipe of the present embodiment is a horizontally drawn pipe instead of the conventional elbow (5).
A first elbow (10) having a bend angle of 90 degrees and a bend angle of 45 degrees are used for connection between (3) and a vertical stand pipe (4). And a second elbow (11).

The first elbow (10) has an inner radius of curvature set to 100 mm or more, one end of which is connected to the horizontal drawing pipe (3), and the other end of which is oblique to the left with respect to the one end.
It is arranged 5 degrees downward. This first elbow (1
The arrangement setting of (0) can be easily performed by swinging the other end side vertically suspended from one end side clockwise by 45 degrees around the one end side with one end side connected to the horizontal drawing pipe (3). Can be done. In addition, the other end of the first elbow (10) may be disposed so as to be inclined downward by 45 degrees to the right with respect to the one end.

The second elbow (11) has one end connected to the other end of the first elbow (10), and the other end arranged vertically and connected to the standing pipe (4). The arrangement setting of the second elbow (11) can be easily performed by shaking one end side to the first elbow (10) and shaking the other end side around the one end side to the vertical position. it can.

In addition, the horizontal drawing pipe (3) and the first elbow (10),
The connection between the first elbow (10) and the second elbow (11), and the connection between the second elbow (11) and the standpipe (4) are made by fitting these connection ends together and tightening with a nut (12). However, the other connection end may be fitted into one of the socket-shaped connection ends, and the socket-shaped connection end may be swaged, and further via a union joint or the like. You may make it connect.

In the above configuration, the basin (1) and the toilet (2)
Drained into the horizontal drawing pipe (3) through the trap (6), and is guided horizontally through the lower part of the horizontal drawing pipe (3),
Reach the first elbow (10). And the first elbow (1
In 0), the flow of the drainage switches from the horizontal direction to a diagonally left 45 degrees downward. At this time, the drainage smoothly flows down in a swirling state, that is, spirally, along the inner surface of the first elbow (10), and an air passage is always secured in the central portion in the first elbow (10). .

The wastewater that has passed through the first elbow (10) flows down spirally as it flows into the second elbow (11), and the flow of the wastewater in the second elbow (11) is cut vertically. Be replaced. At this time, the drainage smoothly flows in a non-full flow state without stagnation, and therefore, an air passage is always maintained even in the second elbow (10). Then, the waste water that has passed through the second elbow (11) flows into the upright pipe (4), is guided vertically as it is, and finally flows into the sewer pipe.

As described above, the drainage flows smoothly without stagnation from the horizontal drawing pipe (3) to the standing pipe (4) via the first and second elbows (10) and (11). In each of the pipes (3) and (4) and in each of the elbows (10) and (11), the drainage does not reach a full state, and an air path is always maintained. Therefore, no negative pressure is generated in the pipe and the trap
(6) It is possible to prevent the occurrence of water breakage and air entrainment noise inside.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

For example, the setting of the bending angle and the arrangement of the first elbow and the second elbow are not limited to those described above, but are set so that the drainage can be smoothly guided to form an air passage in the elbow. Just do it. Further, the drain pipe may be composed of a single curved pipe integrally formed with the first elbow and the second elbow, or may be a relatively long pipe that also functions as a part of a horizontal drawing pipe or a standing pipe. It may be something.

[0023]

As is clear from the above description, when the drainage pipe of the present invention is used, the drainage flowing in the horizontal direction in the horizontal drawing pipe flows into the vertical pipe in a non-full state, and the air in the pipe is not filled. When a trap is provided in a water-using device such as a wash basin or a toilet, a drain is always provided, thereby preventing a negative pressure from being generated in the pipe. The generation of air entrainment noise during drainage can also be prevented.

In addition, since the air passage is always maintained by devising the way of guiding the drainage by the drainage pipe, a ventilation pipe is separately provided as in the related art, or the pipe diameter is made larger than necessary. No countermeasures are required.

For this reason, no space is required for installing a conventional ventilation pipe or ventilation valve or a pipe having a large pipe diameter, and complicated construction planning is not required. Further, unlike the case where a ventilation pipe is provided, the appearance of the building is not impaired, and there is no need to worry about the influence of odor leakage to the vicinity of the house or the neighboring buildings.

Furthermore, the extremely simple structure of connecting the first and second elbows bent in an arc shape between the horizontal drawing pipe and the standpipe has an extremely simple structure. Can be planned.

In particular, the first elbow has a bend angle of 9
A second elbow having a bend angle of 45 degrees is used as the second elbow, and the other end of the first elbow is obliquely 45 degrees below or diagonally left 45 degrees from one end thereof.
By arranging so as to incline 5 degrees downward, the above-mentioned operation can be achieved without using a specially designed elbow, but by using 90 ° and 45 ° elbows which have been frequently used in the past. It is possible to further reduce costs and improve workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a drain pipe according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a diagram showing a conventional piping structure.

FIG. 5 is a perspective view of an elbow portion.

[Explanation of symbols]

 (1) Washbasin (2) Toilet, etc. (3) Horizontal draw pipe (4) Standpipe (10) First elbow (11) Second elbow

Claims (3)

[Claims] 1. A drain pipe for connecting a horizontally drawn pipe connected to water-using equipment such as a washbasin or a toilet and a vertically arranged vertical pipe, wherein the horizontal drawing is performed. The drainage flowing in the pipe is set in a non-full state by flowing the drainage from the pipe into the standing pipe while guiding the drainage obliquely downward as viewed from the longitudinally extending side of the horizontal drawing pipe. tube. 2. An elbow comprising a first elbow and a second elbow bent in an arc shape, one end of the first elbow is connected to the horizontal drawing tube, and the other end of the first elbow is obliquely downward and leftward with respect to the one end. Alternatively, the second elbow is disposed so as to be inclined downward and to the right, and one end of the second elbow is connected to the other end of the first elbow, and the other end is disposed in a vertical direction and connected to the standing pipe. The drainage pipe according to 1. 3. A first elbow having a bend angle of 90 degrees and a second elbow having a bend angle of 45 degrees. One end of the first elbow is connected to the horizontal drawing tube. The other end side is arranged to be inclined 45 degrees downward left diagonally or 45 degrees rightward downward with respect to the one end side,
2. The drain pipe according to claim 1, wherein the second elbow has one end connected to the other end of the first elbow, and the other end arranged in a vertical direction and connected to the upright.