WO2018155512A1

WO2018155512A1 - Drain structure and siphon drain system

Info

Publication number: WO2018155512A1
Application number: PCT/JP2018/006297
Authority: WO
Inventors: 秀司豊田
Original assignee: 株式会社ブリヂストン
Priority date: 2017-02-24
Filing date: 2018-02-21
Publication date: 2018-08-30
Also published as: CN110337517B; JP7014766B2; CN110337517A; TWI767994B; US20190376266A1; TW201843378A; JPWO2018155512A1

Abstract

Provided is a drain structure, comprising: a tub (first water-use area apparatus) in which drainage is reservoir drainage that is drained after storage; a wash place (second water-use area apparatus) in which drainage is continuous drainage without storage; a first drain trap provided to a drain part of the tub; a second drain trap provided to the wash place; a first bypass pipe connecting a drain pipe (downstream-side site) of the first drain trap and a drain pipe (downstream-side site) of the second drain trap, at least a portion of the pipe line of the first bypass pipe being positioned above both the first drain trap and second drain trap; a first siphon drain pipe connected to the downstream side of the first bypass pipe and the first drain trap; and a second siphon drain pipe connected to the downstream side of the first bypass pipe and the second drain trap.

Description

Drainage structure and siphon drainage system

This disclosure relates to a drainage structure and a siphon drainage system.

Japanese Patent No. 4927450 discloses a drainage system in which a temporary storage tank for drainage is connected between a watering device such as a bathtub or a washing place and a siphon drain pipe. This temporary storage tank is arrange | positioned in the underfloor space between a slab and a floor surface. The drain pipe of the bathtub is connected to the drain trap of the washing place, and the water of the bathtub is drained through the drain pipe of the washing place.

When draining from the bathtub, the water in the bathtub becomes a drained drainage, so a large amount of drainage flows into the drain pipe. Since the siphon drain pipe has a pipe diameter smaller than that of the conventional gradient pipe, the drainage from the bathtub may overflow to the wash place through the drain trap of the wash place until the siphon force is generated in the siphon drain pipe. For this reason, the temporary storage tank like the above-mentioned conventional example is devised.

However, in order to secure the capacity of the temporary storage tank, the temporary storage tank needs to have a certain height, and it is necessary to secure an underfloor space according to this height. For this reason, when providing a temporary storage tank, it was difficult to lower the floor.

This disclosure is intended to provide a drainage structure and a siphon drainage system capable of further lowering the floor.

The drainage structure includes a first watering device that serves as a drainage drainage after drainage is stored, a second watering device that serves as a continuous drainage without storage, and the first watering device. The first drain trap provided in the drainage section of the second drainage trap, the second drainage trap provided in the drainage section of the second watering device, the downstream portion of the first drainage trap, and the downstream of the second drainage trap A first bypass pipe that is connected to a side portion and at least a part of a pipe line is located above both the first drain trap and the second drain trap, and the first drain trap and the first bypass pipe. A first siphon drain pipe connected to the downstream side of the second siphon drain pipe, and a second siphon drain pipe connected to the downstream side of the second drain trap and the first bypass pipe.

The siphon drainage system has a drainage stack arranged in the vertical direction of the building and a drainage structure, and the first siphon drainage pipe and the second siphon drainage pipe are laterally drawn to let the drainage flow laterally. A pipe and a soot pipe connected to the drainage stack and allowing the drainage from the horizontal pulling pipe to flow downward.

According to the drainage structure and siphon drainage system according to the present disclosure, it is possible to provide a siphon drainage system capable of further lowering the floor.

It is sectional drawing which shows the outline | summary of the siphon drainage system which concerns on 1st Embodiment. It is a perspective view showing the drainage structure concerning a 1st embodiment. In the drainage structure concerning a 1st embodiment, it is a sectional view showing the initial stage at the time of drainage from a bathtub. It is sectional drawing which shows the waste_water | drain state after siphon force generation | occurrence | production. In the drainage structure concerning a 1st embodiment, it is a sectional view showing the drainage state from a washing place. In the drainage structure in 1st Embodiment, it is an exploded perspective view which shows the structure which made the apron of the bathtub removable. It is a perspective view which shows typically the drainage structure which concerns on 2nd Embodiment. It is a perspective view which shows typically the drainage structure which concerns on 3rd Embodiment. It is a perspective view which shows typically the drainage structure which concerns on 4th Embodiment. It is a perspective view which shows typically the waste_water | drain structure which concerns on the reference example 1. FIG. It is a perspective view which shows typically the waste_water | drain structure which concerns on the reference example 2. FIG. It is sectional drawing which shows the drainage structure which concerns on 5th Embodiment. It is sectional drawing which shows the drainage structure which concerns on 6th Embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[First Embodiment]
In FIG. 1, a siphon drainage system 10 according to the present embodiment includes a drainage stack 14 and a drainage structure 16.

The drainage stack 14 penetrates the through hole 25 of the floor slab 24 of the building 15. The drainage stack 14 is provided with a drainage joint 28 for connecting the

drainage pipes

31B and 32B, which will be described later. It is comprised so that the waste_water | drain from may join. In addition, in FIG. 1, the structure of the connection part of each piping, such as a pipe joint, is abbreviate | omitted suitably and shown.

(Drainage structure)
The drainage structure 16 includes a bathtub 11 which is an example of a first watering device, a washing place 12 which is an example of a second watering device, a first drain trap 21, a second drain trap 22, and a first bypass pipe 18. And a first siphon drain pipe 31 and a second siphon drain pipe 32.

The bathtub 11 is an example of a watering device that stores and uses the water 20, and the drainage becomes a reservoir drainage drained after the storage. The washing place 12 is an example of a watering device, and the drainage is continuous drainage without storing water. The bathtub 11 and the washing place 12 are adjacent to each other with a gap S therebetween. The bathtub 11 and the washing place 12 may be integrated with each other as illustrated, or may be separate from each other.

The first drain trap 21 and the second drain trap 22 are so-called sealed traps for preventing the backflow of odor or gas. The first drain trap 21 is provided in the drain part 41 of the bathtub 11. The second drain trap 22 is provided in the drain section 42 of the washing place 12.

The first bypass pipe 18 is a pipe body that connects a drain pipe 51 that is an example of a downstream part of the first drain trap 21 and a drain pipe 52 that is an example of a downstream part of the second drain trap 22. The first bypass pipe 18 is provided in the gap S between the bathtub 11 and the washing place 12 so as not to be visible to the user during normal use. By providing the first bypass pipe 18 in the gap S, the space can be used effectively. In addition, you may provide the 1st bypass pipe 18 in other parts, such as between a bathroom and the wall of a building (not shown).

At least a part of the pipe line in the first bypass pipe 18, for example, the uppermost part 18 H is located above both the first drain trap 21 and the second drain trap 22. Here, “above both the first drain trap 21 and the second drain trap 22” means above the upper surface 21 A of the first drain trap 21 and above the upper surface 22 A of the second drain trap 22. The first bypass pipe 18 is formed, for example, in an inverted U shape, and has a vertical pipe section 18A on the first drain trap 21 side, a vertical pipe section 18B on the second drain trap 22 side, and a connection section between the

vertical pipe sections

18A and 18B. 18D. The connecting portion 18D extends in the horizontal direction, for example. The uppermost portion 18 H is a bottom surface of the pipe line, and the bottom surface is located above both the first drain trap 21 and the second drain trap 22. When the height of the bottom surface of the pipe line in the connecting portion 18D is not constant, the highest position is the uppermost portion 18H. In addition, although the uppermost part 18H was mentioned as at least a part of the pipe line of the first bypass pipe 18, parts other than the uppermost part 18H are located above both the first drainage trap 21 and the second drainage trap 22. You may do it.

The drain pipe 51 extends in the lateral direction from the first drain trap 21 and joins the vertical pipe section 18A of the first bypass pipe 18, and the vertical pipe section 51B extends downward from the lower end of the vertical pipe section 18A. The lower horizontal pipe portion 51C extends in the horizontal direction from the lower end of the vertical pipe portion 51B. Similarly, the drain pipe 52 extends from the second drain trap 22 in the lateral direction and joins the vertical pipe section 18B of the first bypass pipe 18 and the vertical pipe extends downward from the lower end of the vertical pipe section 18B. It has a part 52B and a lower horizontal pipe part 52C extending in the horizontal direction from the lower end of the vertical pipe part 52B. In addition, the structure of the

drain pipes

51 and 52 is not restricted to this, What is necessary is just a structure which can drain from the 1st drain trap 21 and the 2nd drain trap 22, respectively.

An intake valve 30 is provided in the first bypass pipe 18. The intake valve 30 is a component that allows air from outside to pass through the first bypass pipe 18 and prevents the drainage and air from passing through the first bypass pipe 18 to the outside. The intake valve 30 is provided, for example, at the upper end of the extension 18C of the vertical pipe 18A. If this extension 18C is included, it can be said that the first bypass pipe 18 is formed in the shape of a mirror character in which the h-shape is inverted. When the first bypass pipe 18 is viewed from the opposite side, it becomes h-shaped. The intake valve 30 may be provided in the connection portion 18D in the first bypass pipe 18. Further, the extension portion 18C and the intake valve 30 may be provided above the vertical pipe portion 18B.

It is desirable that the height position of the uppermost portion 18H of the pipe line in the first bypass pipe 18 is equal to or higher than the height position of the standard head H of the water 20 stored in the bathtub 11. The standard of the water head H is, for example, the bottom of the bathtub 11. The standard head H corresponds to the amount of hot water stored in the bathtub 11 when a person takes a bath, and corresponds to the amount of hot water that does not overflow from the bathtub 11 when a person sits in the bathtub 11, for example. The uppermost portion 18H is the maximum height at which no overflow occurs between the

vertical pipe portions

18A and 18B in the first bypass pipe 18, and corresponds to the height of the bottom surface of the connection portion 18D.

2, the first siphon drain pipe 31 is connected to the downstream side of the first drain trap 21 and the first bypass pipe 18. The second siphon drain pipe 32 is connected to the downstream side of the second drain trap 22 and the first bypass pipe 18.

Specifically, in FIG. 1, the first siphon drain pipe 31 is connected to the end of the lower horizontal pipe portion 51 C of the drain pipe 51. In addition, the first siphon drain pipe 31 includes a horizontal pipe 31A for flowing the waste water in the lateral direction, and a dredger pipe 31B connected to the drainage stack 14 and for flowing the drain water from the horizontal pipe 31A downward. Further, the second siphon drain pipe 32 has a horizontal pipe 32A for flowing the waste water in the lateral direction, and a dredge pipe 32B connected to the drainage stack 14 and for flowing the drain water from the horizontal pipe 32A downward. The lower ends of the

pipes

31B and 32B are connected to the drainage joint 28. In FIG. 1, the first siphon drain pipe 31 is arranged in parallel on the back side of the second siphon drain pipe 32.

As shown in FIG. 6, in the drainage structure 16, the apron 40 constituting the side surface of the washing place 12 on the bathtub 11 side may be configured to be detachable. In this case, the drainage structure 16 can be easily maintained by removing the apron 40.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 3, in the drainage structure 16 according to the present embodiment, the drainage from the bathtub 11 becomes a drainage drainage drained after storage, so that a lot of drainage is drained at a time compared to the drainage from the washing place 12. Is done. Drainage from the bathtub 11 flows through the first drain trap 21 to the first siphon drain pipe 31 through the upper horizontal pipe section 51A, the vertical pipe section 51B, and the lower horizontal pipe section 51C of the drain pipe 51 (arrow A). direction). Excess drainage flows into the first bypass pipe 18 (in the direction of arrow B) until a siphon force is generated in the first siphon drain pipe 31. The air in the first bypass pipe 18 is pushed out to the second drain trap 22 side with the inflow of drainage (in the direction of arrow C).

The first bypass pipe 18 is formed in an inverted U shape, and the uppermost portion 18H of the pipe line is located above both the first drain trap 21 and the second drain trap 22, so that the first bypass pipe 18 flows into the first bypass pipe 18. The drained water does not easily flow to the second drain trap 22 side. In particular, when the height position of the uppermost portion 18H of the pipe line in the first bypass pipe 18 is equivalent to the height position of the standard head H of the water stored in the bathtub 11, from the vertical pipe portion 18A. Overflow to the vertical pipe portion 18B is unlikely to occur. In addition, overflow of the extent that the sealing water of the second drain trap 22 is not broken may occur.

In FIG. 4, when a siphon force is generated in the first siphon drain pipe 31, the drainage from the bathtub 11 and the drainage flowing into the first bypass pipe 18 are quickly discharged through the first siphon drain pipe 31 (arrow A). Direction), the water level of the bathtub 11 decreases (arrow D direction). At this time, since outside air is taken into the first bypass pipe 18 from the intake valve 30 (in the direction of arrow E), the negative pressure is suppressed from acting on the second drain trap 22 side. For this reason, the sealed water of the second drain trap 22 is not broken.

As described above, according to the drainage structure 16, it is possible to prevent the drainage drainage from the bathtub 11 from overflowing into the washing place 12 without using a conventional temporary storage tank.

On the other hand, in FIG. 5, the drainage from the washing place 12 is continuous drainage without storing water. The waste water from the washing place 12 flows through the second drain trap 22 to the second siphon drain pipe 32 through the upper horizontal pipe section 52A, vertical pipe section 52B, and lower horizontal pipe section 52C of the drain pipe 52 (arrow F). direction). Since the air in the pipe line in the first bypass pipe 18 is pushed out to the first drain trap 21 side through the first bypass pipe 18 (arrow G direction), drainage from the washing place 12 is performed smoothly. In the case of continuous drainage, since there is almost no water head, drainage does not flow into the vertical pipe portion 18B of the first bypass pipe 18. When the siphon force is generated in the second siphon drain pipe 32, the waste water from the washing place 12 is quickly discharged through the second siphon drain pipe 32 (in the direction of arrow A). At this time, if it is drainage from only the washing place 12, negative pressure is hardly generated in the first bypass pipe 18, but when negative pressure is generated in the first bypass pipe 18 at the time of simultaneous drainage with the bathtub 11, etc. Since the outside air is taken in through the intake valve 30, the sealed water in the first drain trap 21 and the second drain trap 22 is not broken.

In FIG. 1, in the siphon drainage system 10 according to the present embodiment, drainage from the bathtub 11 can flow to the drainage stack 14 through the horizontal pulling pipe 31 A and the vertical pipe 31 B of the first siphon drainage pipe 31. Further, in the siphon drainage system 10, drainage from the washing place 12 can flow to the drainage stack 14 through the horizontal pulling pipe 32 A and the soot pipe 32 B of the second siphon drainage pipe 32.

As described above, according to the drainage structure 16 and the siphon drainage system 10 according to the present embodiment, a conventional temporary storage tank is not required, so that the installation location of the bathtub 11 or the like where the drainage drains is performed can be further reduced. Flooring is possible.

[Second Embodiment]
In FIG. 7, the drainage structure 26 according to the present embodiment includes

auxiliary chambers

71 and 72 in at least one of the downstream portion of the first drain trap 21 and the downstream portion of the second drain trap 22, for example, both. Yes. The auxiliary chamber 71 is provided at a downstream portion of the first drain trap 21. The auxiliary chamber 72 is provided at a downstream portion of the second drain trap 22.

The

auxiliary chambers

71 and 72 are, for example, large diameter portions (inner diameter enlarged portions) provided in the

drain pipes

51 and 52, respectively. The height dimensions of the

auxiliary chambers

71 and 72 are set to be smaller than that of the conventional temporary storage tank, and the

auxiliary chambers

71 and 72 are arranged in a space necessary for the arrangement of the first drain trap 21, the second drain trap 22, and the

drain pipes

51 and 52. The size is possible. Therefore, no extra underfloor space is required for installing the

auxiliary chambers

71 and 72.

In the illustrated example, the

auxiliary chambers

71 and 72 are both arranged on the upstream side of the first bypass pipe 18, but either one or both of the

auxiliary chambers

71 and 72 are on the downstream side of the first bypass pipe 18. It may be arranged.

In this drainage structure 26, surplus drainage exceeding the capacity of the first bypass pipe 18 can be received by the

auxiliary chambers

71 and 72. When the water pumped up from the bathtub 11 (FIG. 1) is used in the washing place 12 (FIG. 1), a larger amount of water is discharged from the washing place 12 than usual. Even in such a case, the drainage from the washing place 12 can be suppressed by receiving the drainage in the

auxiliary chambers

71 and 72. Moreover, it can respond to a larger amount of drainage from the bathtub 11.

The other parts are the same as those in the first embodiment, so the same parts are denoted by the same reference numerals in the drawings and the description thereof is omitted.

[Third Embodiment]
In FIG. 8, in the drainage structure 36 according to the present embodiment, a vent pipe 74 serving as a substitute for the intake valve 30 (FIG. 2) is connected to the first bypass pipe 18. The ventilation pipe 74 extends to the outside of the building, for example, and the end 74A is open to the atmosphere.

In this drainage structure 36, since the ventilation pipe 74 is provided instead of the intake valve 30 (FIG. 2), the space for arranging the intake valve 30 is not required.

When the siphon force is generated in the first siphon drain pipe 31, since the outside air is taken into the first bypass pipe 18 from the vent pipe 74, the sealed water of the second drain trap 22 is not broken. Even when a siphon force is generated in the second siphon drain pipe 32, since the outside air is taken into the first bypass pipe 18 from the vent pipe 74, the sealed water of the first drain trap 21 is not broken.

[Fourth Embodiment]
In FIG. 9, the drainage structure 46 according to this embodiment includes other drainage traps 83 and 84, siphon

drainage pipes

93 and 94,

individual ventilation pipes

103 and 104, a header 80, and a combined circulation pipe 90. is doing.

The other drain trap 83 is provided for a drain (not shown) of a washing machine which is an example of another watering device. The other drain trap 84 is provided with respect to the washstand which is an example of another watering device. The other drain traps 83 and 84 are so-called sealed traps for preventing the backflow of odor and gas.

A drain pipe 113 is connected to the downstream side of the other drain trap 83. The siphon drain pipe 93 is connected to the downstream side of the drain pipe 113. Further, a drain pipe 114 is connected to the downstream side of the other drain trap 84. The siphon drain pipe 94 is connected to the downstream side of the drain pipe 114.

The individual vent pipe 103 has one end connected to a downstream portion (drain pipe 113) of another drain trap 83. Further, one end of the individual vent pipe 104 is connected to a downstream portion (drain pipe 114) of another drain trap 84. The other ends of the

individual vent pipes

103 and 104 are connected to the header 80, respectively.

The header 80 is a pipe joint to which the vent pipe 74 and the

individual vent pipes

103 and 104 are connected. The combined air pipe 90 is connected to the header 80 and is open to the atmosphere. Specifically, the common air pipe 90 extends, for example, to the outside of a building, and the end 90A is open to the atmosphere.

In this drainage structure 46, since the ventilation pipe 74 and the

individual ventilation pipes

103 and 104 are provided instead of the intake valve 30 (FIG. 2), the space for arranging the intake valve 30 becomes unnecessary. Further, the ventilation pipe 74 and the

individual ventilation pipes

103 and 104 are assembled in the header 80 and are opened to the atmosphere through the combined circulation pipe 90. Therefore, it is not necessary to extend the vent pipe 74 and the

individual vent pipes

103 and 104 to the outdoors. Thereby, intake / exhaust can be performed in a lump, and the number of parts can be reduced as compared with the case where the ventilation pipe 74 and the

individual ventilation pipes

103 and 104 are individually opened to the atmosphere.

[Reference Example 1]
In FIG. 10, in the drainage structure 56 according to this reference example, the first siphon drain pipe 31 is connected to the downstream side of the drain pipe 51 extending from the first drain trap 21. A second siphon drain pipe 32 is connected to the downstream side of the drain pipe 52 extending from the second drain trap 22. That is, the drainage path from the first drain trap 21 and the drain path from the second drain trap 22 are independent of each other.

Therefore, even if drainage drainage from the first drain trap 21 is performed, the drainage does not flow into the second drain trap 22 side. For this reason, it can suppress that the drainage waste_water | drain from the bathtub 11 overflows into the washing place 12 (FIG. 1).

[Reference Example 2]
In FIG. 11, the drainage structure 66 according to the present reference example is further provided with

intake valves

111 and 112 in the first reference example. A branch pipe 121 extending upward is connected to the drain pipe 51. The intake valve 111 is provided at the upper end of the branch pipe 121. A branch pipe 122 extending upward is connected to the drain pipe 52. The intake valve 112 is provided at the upper end of the branch pipe 122. The configuration of the

intake valves

111 and 112 is the same as that of the intake valve 30 of the first embodiment.

In this reference example, similarly to the reference example 1, even if the reservoir drainage from the first drain trap 21 is performed, the drainage does not flow into the second drain trap 22 side. For this reason, it can suppress that the drainage waste_water | drain from the bathtub 11 overflows into the washing place 12 (FIG. 1).

Since the intake valve 111 is added to the drain pipe 51, outside air is taken in from the intake valve 111 when draining from the first drain trap 21. In addition, since the intake valve 112 is added to the drain pipe 52, outside air is taken in from the intake valve 112 when draining from the second drain trap 22. Therefore, the drainage from the first drain trap 21 and the drainage from the second drain trap 22 are easy to flow.

The other parts are the same as those in the first embodiment or reference example 1, and therefore the same parts are denoted by the same reference numerals and the description thereof is omitted.

[Fifth Embodiment]
In FIG. 12, the drainage structure 76 according to the present embodiment has a second bypass pipe 218. The second bypass pipe 218 connects the first drain trap 21 side and the second drain trap 22 side of the first bypass pipe 18 at a position lower than the uppermost portion of the first bypass pipe 18. The bottom surface of the pipe line in the second bypass pipe 218 is disposed lower than the upper surface 22H of the second drain trap 22. Further, the bottom surface of the pipe line in the second bypass pipe 218 is disposed higher than the bottom surface 52D of the upper horizontal pipe portion 52A of the drain pipe 52.

The second bypass pipe 218 extends in the lateral direction, for example. The second bypass pipe 218 may be inclined or curved with respect to the horizontal direction. Thus, when the height of the bottom surface of the pipe line in the second bypass pipe 218 is not constant, the highest position of the bottom surface is lower than the upper surface 22H of the second drain trap 22 and the upper horizontal pipe portion 52A. It is arranged higher than the bottom surface 52D.

A first check valve 19 is provided at, for example, the connecting portion 18D in the first bypass pipe 18. The first check valve 19 is configured to allow the flow from the second drain trap 22 side to the first drain trap 21 side and not allow the flow on the opposite side. Note that the position of the first check valve 19 is not limited to the connecting portion 18D, and may be provided, for example, in the vertical pipe portion 18B. Further, the first check valve 19 may be configured to allow the flow from the first drain trap 21 side to the second drain trap 22 side to some extent.

The second bypass pipe 218 is provided with a second check valve 219. The second check valve 219 is configured to allow the flow from the second drain trap 22 side to the first drain trap 21 side and not allow the flow on the opposite side. The second check valve 219 may be configured to allow the flow from the first drain trap 21 side to the second drain trap 22 side to some extent.

Even when the drainage from the washing place 12 becomes full without entering the second drain trap 22, according to the present embodiment, excess drainage passes through the second bypass pipe 218 and the vertical pipe portion 51 B of the drain pipe 51. Then, it flows to the first siphon drain pipe 31 (FIG. 1) through the lower horizontal pipe portion 51C (in the direction of arrow H). In the present embodiment, the bottom surface of the pipe line in the second bypass pipe 218 is disposed higher than the bottom surface 52D of the upper horizontal pipe portion 52A of the drain pipe 52. Accordingly, the waste water from the washing place 12 does not always flow to the second bypass pipe 218, and the second siphon drain pipe 32 is quickly full, so that the siphon activation is not delayed.

In the present embodiment, the bottom surface of the pipe line in the second bypass pipe 218 is disposed lower than the upper surface 22H of the second drain trap 22. Therefore, when the drainage is likely to overflow from the second drain trap 22, the drainage flows to the second bypass pipe 218, so that the drainage can be prevented from overflowing from the second drain trap 22.

Furthermore, since the second check valve 219 is provided in the second bypass pipe 218, the flow from the first drain trap 21 side to the second drain trap 22 side through the second bypass pipe 218 is suppressed. Further, since the first check valve 19 is provided at the connection portion 18D of the first bypass pipe 18, the second drain trap from the first drain trap 21 side through the first bypass pipe 18 when draining from the bathtub 11 is performed. The flow to the 22 side, that is, the overflow from the vertical pipe portion 18A to the vertical pipe portion 18B is further less likely to occur.

[Sixth Embodiment]
In FIG. 13, the drainage structure 86 according to the present embodiment is configured such that the first check valve 19 of the first bypass pipe 18 in the fifth embodiment is omitted. In the first bypass pipe 18, as described in the first embodiment, overflow is generated between the vertical pipe portions 18 A and 18 B in the first bypass pipe 18 by appropriately setting the height of the uppermost portion 18 H. I can not. Therefore, by omitting the first check valve 19 as in the present embodiment, the configuration can be simplified and the cost can be reduced.

[Other Embodiments]
As mentioned above, although an example of embodiment of this invention was demonstrated, embodiment of this invention is not limited above, In addition to the above, in a range which does not deviate from the main point, it can implement variously. Of course there is.

Although the bathtub 11 has been described as an example of the first watering device, the first watering device may be a device such as a washing machine that drains water. Moreover, although the washing place 12 was mentioned as an example of the 2nd watering device, the 2nd watering device may be a device in which drainage becomes continuous drainage, such as a wash basin, a kitchen, and a dishwasher.

Although the drain pipe 51 is given as an example of the downstream part of the first drain trap 21 to which the first bypass pipe 18 is connected, the downstream part is not limited to this. Similarly, although the drain pipe 52 was mentioned as an example of the downstream part of the 2nd drain trap 22 to which the 1st bypass pipe 18 is connected, a downstream part is not restricted to this. For example, the first bypass pipe 18 may be directly connected to at least one of the first drain trap 21 and the second drain trap 22.

Although the intake valve 30 is provided in the first bypass pipe 18, the intake valve 30 may be omitted if the sealing water of the first drain trap 21 and the second drain trap 22 is not broken.

The disclosure of Japanese Patent Application No. 2017-33512 filed on February 24, 2017 is incorporated herein by reference in its entirety.
All documents, patent applications, and technical standards mentioned in this specification are to the same extent as if each individual document, patent application, and technical standard were specifically and individually described to be incorporated by reference, Incorporated herein by reference.

Claims

A first watering device that is drained and drained after storage;
A second watering device in which drainage is continuous drainage without storing water;
A first drain trap provided in the drainage section of the first watering device;
A second drainage trap provided in the drainage section of the second watering device;
The downstream part of the first drain trap and the downstream part of the second drain trap are connected, and at least a part of the pipeline is positioned above both the first drain trap and the second drain trap. A first bypass pipe;
A first siphon drain pipe connected to the downstream side of the first drain trap and the first bypass pipe;
A second siphon drain pipe connected downstream of the second drain trap and the first bypass pipe;
Having drainage structure.
The drainage structure according to claim 1, further comprising an auxiliary chamber in at least one of a downstream part of the first drain trap and a downstream part of the second drain trap.
The drainage structure according to claim 1 or 2, wherein an intake valve is provided in the first bypass pipe.
The drainage structure according to claim 1 or 2, wherein a vent pipe is connected to the first bypass pipe.
Other drain traps provided for other watering devices,
A siphon drain pipe connected to the downstream side of the other drain trap;
An individual vent pipe connected to a downstream portion of the other drain trap;
A header to which the vent pipe and the individual vent pipe are connected;
A combined trachea connected to the header and open to the atmosphere;
The drainage structure according to claim 4 having
The first drain trap side and the second drain trap side of the first bypass pipe are connected to each other at a position lower than the uppermost part of the first bypass pipe, and the bottom surface of the pipe line is higher than the upper surface of the second drain trap. The drainage structure according to any one of claims 1 to 5, further comprising a second bypass pipe disposed at a low level.
A drainage pipe connecting the second drainage trap and the second siphon drainage pipe;
The drainage structure according to claim 6, wherein a bottom surface of the pipe line in the second bypass pipe is disposed higher than a bottom surface of the drain pipe.
The first bypass pipe is provided with a first check valve that allows a flow from the second drain trap side to the first drain trap side but does not allow a flow on the opposite side. The drainage structure according to claim 7.
The second bypass pipe is provided with a second check valve that allows a flow from the second drain trap side to the first drain trap side but does not allow a flow on the opposite side. The drainage structure according to any one of claims 8 to 9.
A drainage stack arranged in the vertical direction of the building,
The drainage structure according to any one of claims 1 to 9,
Each of the first siphon drain pipe and the second siphon drain pipe includes a horizontal pulling pipe that allows the drainage to flow in a lateral direction, and a vertical pipe that is connected to the drainage stack and allows the drainage from the horizontal pulling pipe to flow downward. Siphon drainage system.