JP2023077897A - piping structure - Google Patents

Abstract

To provide a piping structure having a plurality of syphon drainage pipes provided in a temporary storage tank as a resin molding, for shortening a syphon generation time while securing the moldability of the temporary storage tank to improve a yield.SOLUTION: A piping structure 20 includes a temporary storage tank 30 as a resin molding where a plurality of outflow port 30C is provided, a plurality of first horizontal pipes 31A, 31B each connected to the plurality of outflow ports 30C of the temporary storage tank 30 via joints 28 for discharging drainage water discharged from the temporary storage tank 30 in the horizontal direction, a pipe joint 48 (a joint part) joining the plurality of first horizontal pipes 31A, 31B into one, a second horizontal pipe 44 connected to the downstream side of the pipe joint 48 for discharging the joined drainage water in the horizontal direction, and a solid pipe 46 connected to the downstream side of the second horizontal pipe 44 for generating syphon force, the outflow port 30C being arranged so that adjacent joints 28 separate from each other.SELECTED DRAWING: Figure 2

Description

The present invention relates to a piping structure.

A temporary storage tank for temporarily storing waste water discharged from plumbing fixtures, and a plurality of siphon drain pipes connected to the temporary storage tank for causing a siphon force to act on the waste water stored in the temporary storage tank for outflow. A siphon drainage system is disclosed in U.S. Pat. The siphon drainage pipe is composed of a horizontal pipe connected to the temporary storage tank, and a vertical pipe that communicates with the downstream side of the horizontal pipe and extends downward to join the drainage stack.

JP 2011-256557 A

The amount of water discharged per unit time of a plumbing appliance differs from appliance to appliance. For example, less than 10 liters of waste water is discharged at a time from a toilet bowl, while about 200 liters of waste water is discharged at a time from a bathtub or the like. When draining such a large amount of waste water, a siphon drain pipe with a small inner diameter may take a long time to drain. In addition, if the horizontal pipe is long (for example, 10 m), it takes time to obtain the necessary flow rate for siphon generation at the drop portion, which increases the siphon generation time and makes it easier for waste water to stay in the temporary storage tank.

Further, when a plurality of outflow ports are provided in the temporary storage tank, it is desirable that the outflow ports are arranged at positions close to each other from the viewpoint of reducing pressure loss. However, when the temporary storage tank is a resin molded product and a plurality of outflow ports are formed in the same direction in the horizontal plane, if the positions are too close to each other, the portion between the outflow ports adjacent to each other may be damaged. Difficult to mold.

An object of the present invention is to secure the formability of the temporary storage tank, improve the yield, and shorten the siphon generation time in a piping structure in which a plurality of siphon drainage pipes are provided in the temporary storage tank, which is a resin molded product. and

A piping structure according to a first aspect includes a temporary storage tank for a resin molded product provided in a drainage system and provided with a plurality of outflow ports, and a joint connected to the plurality of outflow ports provided in the temporary storage tank. a plurality of first horizontal pipes connected to each other and discharging the wastewater discharged from the temporary storage tank in the horizontal direction; A second horizontal pipe connected to the downstream side of and discharging the merged waste water in a horizontal direction, and a second horizontal pipe connected to the downstream side of the second horizontal pipe and causing the waste water to flow down The first horizontal pipe and a vertical pipe for generating a siphon force in the second horizontal pipe, and the outflow port is arranged such that the adjacent joints are separated from each other.

In this piping structure, the plurality of outflow ports of the temporary storage tank, which is a resin molded product, are arranged so that adjacent joints are separated from each other, so that moldability in the vicinity of the outflow port can be secured and the yield is improved. In addition, by draining water from the temporary storage tank through a plurality of first horizontal pipes, the flow rate of the second horizontal pipe is increased, and the flow from the second horizontal pipe to the vertical pipe is quickly filled. be able to. Thereby, the siphon generation time can be shortened.

A second aspect is the piping structure according to the first aspect, wherein the outlets are formed in the same direction in plan view, and the distance between the centers of the adjacent outlets in plan view is It is at least 1.5 times the minimum dimension at which the joints do not interfere with each other.

In this piping structure, the outflow ports are formed in the same direction in plan view, and the distance between the centers of adjacent outflow ports in plan view is 1.5 times the minimum dimension at which adjacent joints do not interfere. As described above, the moldability of the temporary storage tank can be further enhanced, and the yield can be improved.

A third aspect is the piping structure according to the first aspect, wherein the outlets are formed in different directions in plan view.

In this piping structure, the plurality of outflow ports are formed in directions different from each other in a plan view, so that the plurality of outflow ports can be arranged close to each other while suppressing interference between joints. Thereby, the pressure loss at the time of draining water from the temporary storage tank can be suppressed.

A fourth aspect is the piping structure according to any one of the first to third aspects, wherein the outflow port is provided at a position facing the inflow port of the temporary storage tank in the drainage direction in plan view. ing.

In this piping structure, the outflow port is provided at a position facing the inflow port 30A of the temporary storage tank in the drainage direction in plan view, so that the wastewater flowing into the temporary storage tank from the inflow port 30A flows straight to the outflow port. flowing. As a result, the momentum of the drainage is suppressed, so that the drainage can be quickly flowed to the first horizontal pipe, the second horizontal pipe, and further to the vertical pipe. Thereby, the siphon generation time can be further shortened.

According to the present invention, in a piping structure in which a plurality of siphon drainage pipes are provided in a temporary storage tank that is a resin molded product, the moldability of the temporary storage tank is secured to improve the yield, and the siphon generation time is shortened. can be done.

It is a side view which shows the piping structure which concerns on this embodiment. It is a perspective view which shows the piping structure which concerns on this embodiment. It is a top view which shows the piping structure which concerns on this embodiment. It is a top view which shows the outflow port of a temporary storage tank. FIG. 8 is a plan view showing an outflow port according to Modification 1; FIG. 11 is a plan view showing an outflow port according to modification 2;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described based on the drawings. Components shown using the same reference numerals in each drawing mean the same or similar components. It should be noted that redundant descriptions and reference numerals in the embodiments described below may be omitted. Also, the drawings used in the following description are all schematic, and the dimensional relationship of each element, the ratio of each element, etc. shown in the drawings do not necessarily match the actual ones. Moreover, the dimensional relationship of each element, the ratio of each element, etc. do not necessarily match between a plurality of drawings.

FIG. 1 shows an outline of a piping structure 20 according to this embodiment. The piping structure 20 is a structure of a siphon drainage system that discharges drainage from the plumbing equipment 12 using siphon force. As an example, the piping structure 20 is used in an apartment building 10 formed in multiple layers. As shown in FIG. 2, the piping structure 20 includes a temporary storage tank 30, a plurality of first horizontal pipes 31A and 31B, a pipe joint 48 as an example of a confluence, and a second horizontal pipe 44. , and a vertical pipe 46 . A portion from the first lateral pipes 31A and 31B to the vertical pipe 46 can also be called a siphon drain pipe 40. As shown in FIG.

The piping structure 20 is provided with a drainage stack 22 for flowing drainage downward. A plurality of drainage stacks 22 are provided at different locations on the flat surface of the condominium 10 . For example, the drain stack 22 is accommodated along the vertical direction (longitudinal direction) in a piping space (also referred to as a pipe space) partitioned by walls from each dwelling unit on each floor of the apartment house 10. pierces the slab 14 on each floor of the

Each dwelling unit of the apartment house 10 is provided with a plumbing appliance 12. - 特許庁The plumbing equipment 12 is, for example, a bathroom unit, and is formed by integrating a bathtub 12A and a washing area 12B. One end of a drainage introduction pipe 24 is connected to the plumbing equipment 12 .

The other end of the drainage introduction pipe 24 is connected to the temporary storage tank 30 . Thereby, the waste water introduction pipe 24 introduces the waste water discharged from the bathtub 12A and the washing place 12B of the water-related equipment 12 into the temporary storage tank 30 . In addition, it is preferable that the drainage introduction pipe 24 is arranged with a slope so that the temporary storage tank 30 side becomes lower.

The temporary storage tank 30 is provided downstream of the plumbing equipment 12 in the drainage system, and is a resin molded product provided with a plurality of outlets 30C (FIG. 4). The temporary storage tank 30 is a container for temporarily storing the drainage introduced from the plumbing equipment 12 through the drainage introduction pipe 24 and discharging it to the drainage stack 22 . The temporary storage tank 30 is made of a resin material such as rigid polyvinyl chloride by blow molding. A siphon drainage pipe 40 according to the present embodiment is connected to the downstream side of the drainage in the temporary storage tank 30 . On the opposite side of the inlet 30A in the drainage direction A in plan view and at the central portion in the width direction of the temporary storage tank 30, a projecting portion 30B is formed so as to collect the drainage. For example, two outflow ports 30C are provided in the projecting portion 30B. The first horizontal pipes 31A and 31B are connected to the two outflow ports 30C via joints 28, respectively.

The outflow port 30C is arranged such that adjacent joints 28 are separated from each other. Specifically, the outflow ports 30C are formed substantially parallel to each other in the same direction in plan view, and the distance L between the centers of adjacent outflow ports 30C in plan view is At least 1.5 times the minimum dimension that does not interfere. As an example, when the inner diameter of the outflow port 30C is 38 mm, the minimum dimension at which the joints 28 do not interfere with each other is 55 mm, for example. Considering the moldability of the temporary storage tank 30, which is a resin molded product, the center-to-center distance L of the outflow port 30C in plan view is, for example, 100 mm. In this case, the center-to-center distance L is about 1.8 times (100/55≈1.8) the minimum dimension at which the joints 28 do not interfere with each other. Since the pressure loss increases as the center-to-center distance L increases, the upper limit of the center-to-center distance L is set in consideration of the allowable pressure loss.

In FIG. 3, two outflow ports 30C are provided in the projecting portion 30B. The projecting portion 30B is provided, for example, at a position facing the inflow port 30A of the temporary storage tank 30 in the drainage direction A in plan view. Along with this, the two outflow ports 30C are also provided at positions facing the inflow port 30A of the temporary storage tank 30 in the drainage direction A in plan view.

In addition, as shown in FIGS. 5 and 6, the two outlets 30C may be formed in different directions in plan view. In Modification 1 shown in FIG. 5, two outflow ports 30C are formed in an inverted V shape so as to separate from each other toward the tip side (downstream side). In Modified Example 2 shown in FIG. 6, one of the two outflow ports 30C is formed parallel to the drainage direction A, and the other is formed to be inclined with respect to the drainage direction A. As shown in FIG.

The plurality of first horizontal pull pipes 31A and 31B are pipes arranged substantially parallel to each other in the horizontal direction along the slab 14, for example. The first horizontal pipes 31A and 31B are connected to a plurality of outflow ports 30C provided in the temporary storage tank 30 through joints 28, respectively, and are horizontal pipes for laterally discharging the wastewater discharged from the temporary storage tank 30. is. The first horizontal pipes 31A and 31B are formed of, for example, polybdenum pipes having a nominal diameter of 25J (inner diameter of approximately 28 mm), and are arranged horizontally on the slab 14 with no gradient. It should be noted that the term "no gradient" as used herein does not necessarily mean that the slab 14 is in the horizontal direction, but includes some steps and gradients along the slab 14 .

A center line passing through the center of the arrangement direction of the two first horizontal pipes 31A and 31B is arranged on an extension line of the center line CL of the drainage introduction pipe 24 . Furthermore, the centerline of the second horizontal draw pipe 44 is also arranged on the extension line of the centerline CL of the drainage introduction pipe 24 . It should be noted that the two first horizontal pulling pipes 31A and 31B do not necessarily have to be arranged in parallel depending on the situation of the installation site.

The total cross-sectional area of the two first lateral pipes 31A and 31B is less than the cross-sectional area of the drainage introduction pipe 24. Furthermore, the cross-sectional area of the second horizontal pull pipe 44 is less than the total cross-sectional area of the two first horizontal pull pipes 31A and 31B. The second horizontal pipe 44 and the first horizontal pipes 31A and 31B are set so that the waste water flows at full flow. , the energy of the siphon head exerts a siphon force in the downstream direction of the drainage.

The total cross-sectional area of the two first horizontal pipes 31A and 31B may be greater than or equal to the cross-sectional area of the drainage introduction pipe 24 as long as the siphon effect can be obtained. Similarly, the cross-sectional area of the second horizontal pipe 44 may be equal to or greater than the total cross-sectional area of the two first horizontal pipes 31A and 31B as long as the siphon effect can be obtained. When the cross-sectional area varies depending on the location along the axial direction, the cross-sectional area referred to here refers to the average cross-sectional area.

As shown in FIG. 4, the pipe joint 48 is a member that merges the plurality of first horizontal pipes 31A and 31B into one. The pipe joint 48 is, for example, Y-shaped, but is not limited to this and may be of other shapes.

The second horizontal draw pipe 44 is, for example, a pipe arranged along the slab 14, is connected to the downstream side of the pipe joint 48, and discharges the combined waste water in the horizontal direction. The second horizontal pull pipe 44 is formed of, for example, a rigid polyvinyl chloride pipe having a nominal diameter of 30A (inner diameter of 30 mm), and is arranged horizontally on the slab 14 with no slope.

The vertical pipe 46 is connected to the downstream side of the second horizontal pipe 44, and is a portion that generates a siphon force in the first horizontal pipes 31A, 31B and the second horizontal pipe 44 by causing the waste water to flow down. The vertical pipe 46 is, for example, a rigid polyvinyl chloride pipe with a nominal diameter of 25A (inner diameter of 25 mm). The vertical pipe 46 is arranged, for example, in the up-down direction (vertical direction) along the drainage stack 22 . The downstream end of the vertical pipe 46 reaches the junction joint 26 . The confluence joint 26 is a pipe joint that joins the drainage from the vertical pipe 46 to the drainage stack 22 . The length from the pipe joint 48 to the vertical pipe 46 may be, for example, 500-1000 mm.

The drop portion located at the boundary between the second horizontal pull pipe 44 and the vertical pipe 46 is illustrated as a continuous vent pipe, but a pipe joint such as an elbow may be arranged in this vent pipe portion. When a pipe joint is arranged here, an inspection hole or the like can be appropriately provided in the pipe joint. A drop-in portion from the second horizontal pipe 44 to the vertical pipe 46 is arranged outside the dwelling unit, for example, in a meter box.

A vent pipe 50 is further connected to the temporary storage tank 30 , and the vent pipe 50 reaches the junction joint 26 .

(action)
This embodiment is configured as described above, and the operation thereof will be described below. In the piping structure 20 according to the present embodiment, the plurality of outflow ports 30C of the temporary storage tank 30, which is a resin molded product, are arranged so that the adjacent joints 28 are separated from each other. can be secured, and the yield is improved. In particular, molding of the portion between the two outlets 30C during blow molding is facilitated. In addition, as shown in FIG. 4, the outflow ports 30C are formed to face the same direction in plan view, and the distance L between the centers of the adjacent outflow ports 30C in plan view is equal to the distance between the adjacent joints 28. By making it 1.5 times or more the minimum interfering dimension, the moldability of the temporary storage tank 30 can be further enhanced, and the yield can be improved.

Furthermore, as shown in FIG. 3, the outflow port 30C is provided at a position facing the inflow port 30A of the temporary storage tank 30 in the drainage direction in plan view, so that the flow from the inflow port 30A to the temporary storage tank 30 The drain water that has flowed in flows linearly to the outflow port 30C. As a result, a decrease in momentum (pressure loss) of the drain water is suppressed, so that the drain water can flow quickly to the first horizontal pipes 31A and 31B, the second horizontal pipe 44, and further the vertical pipe 46. Thereby, the siphon generation time can be further shortened.

As shown in FIGS. 5 and 6, when the plurality of outlets 30C are formed in different directions in a plan view, interference between the joints 28 can be suppressed and the plurality of outlets can 30C can be placed close to each other. Thereby, the pressure loss at the time of draining water from the temporary storage tank 30 can be suppressed.

Moreover, the wastewater from the temporary storage tank 30 is discharged through the first horizontal pipes 31A and 31B, the second horizontal pipe 44 and the vertical pipe 46. As shown in FIG. Specifically, the waste water flowing through the first horizontal pipes 31A and 31B joins at the pipe joint 48 and is guided to the vertical pipe 46 through the second horizontal pipe 44. As shown in FIG. As the waste water falls through the vertical pipe 46, a siphon force acts on the first horizontal pipes 31A and 31B and the second horizontal pipe 44. As shown in FIG. When the siphon force is generated, the waste water stored in the temporary storage tank 30 is quickly discharged.

In this embodiment, by discharging water through a plurality of first horizontal pipes 31A and 31B, compared to a configuration in which only one horizontal pipe is connected, the flow rate of the second horizontal pipe 44 is increased, A full flow can be quickly generated in the drop portion from the second horizontal pipe 44 to the vertical pipe 46 . Thereby, the siphon generation time can be shortened. As a result, it is possible to suppress the overflow of wastewater from the plumbing equipment 12 located upstream of the temporary storage tank 30 . Even if a large amount of waste water is discharged from the bathtub 12A at once, the waste water is treated by the plurality of first horizontal pipes 31A and 31B, so that the waste water is quickly discharged. In addition, it is possible to secure a larger amount of wastewater to be treated.

Also, even if dirt accumulates in one of the first horizontal pipes 31A and 31B or foreign matter is clogged, drainage can be discharged from the other first horizontal pipes 31A and 31B, making it impossible to drain the water. You can reduce your risk.

As described above, according to the present embodiment, in the piping structure 20 in which a plurality of siphon drain pipes (first horizontal pipes 31 and 32) are provided in the temporary storage tank 30, which is a resin molded product, the temporary storage tank 30 is molded. It is possible to improve the yield by securing the performance, and shorten the siphon generation time.

[Other embodiments]
An example of the embodiment of the present invention has been described above, but the embodiment of the present invention is not limited to the above, and can be modified in various ways without departing from the spirit of the present invention. Of course there is.

For example, although there are two outflow ports 30C, there may be three or more outflow ports 30C, each of which is connected to a first horizontal pipe. In addition, although the outflow port 30C is provided at a position facing the inflow port 30A of the temporary storage tank 30 in the drainage direction A in plan view, it is not limited to this, and if the pressure loss is within the allowable range, The outflow port 30C and the inflow port 30A do not have to face each other.

20 Piping structure 28 Coupling 30 Temporary storage tank 30A Inflow port 30C Outflow port 31A First horizontal pipe 31B First horizontal pipe 44 Second horizontal pipe 46 ... Vertical pipe, 48 ... Pipe joint (joint part), A ... Drainage direction, L ... Distance between centers

Claims (4)

A temporary storage tank for a resin molded product provided in a drainage system and provided with a plurality of outlets;
a plurality of first horizontal pipes connected to the plurality of outflow ports provided in the temporary storage tank via joints, respectively, for laterally discharging the wastewater discharged from the temporary storage tank;
a merging section for merging the plurality of first horizontal pull pipes into one;
a second horizontal draw pipe connected to the downstream side of the confluence portion and laterally discharging the merged wastewater;
a vertical pipe connected to the downstream side of the second horizontal pipe for generating a siphon force in the first horizontal pipe and the second horizontal pipe by causing the waste water to flow down;
with
The outflow port is a piping structure in which the adjacent joints are separated from each other. The outlets are formed in the same direction in plan view,
2. The piping structure according to claim 1, wherein the distance between the centers of the adjacent outflow ports in a plan view is 1.5 times or more of the minimum dimension at which the adjacent joints do not interfere with each other. 2. The piping structure according to claim 1, wherein said outlets are formed in different directions in plan view. 4. The piping structure according to any one of claims 1 to 3, wherein the outflow port is provided at a position facing the inflow port of the temporary storage tank in the drainage direction in plan view.

Images