JP7167400B2 - Drainage structure and siphon drainage system - Google Patents

Description

The present disclosure relates to drainage structures and siphon drainage systems.

Patent Document 1 listed below discloses a drainage system in which a drainage temporary storage tank is connected between a plumbing fixture such as a bathtub or a washing area and a siphon drainage pipe. This temporary storage tank is arranged in the underfloor space between the slab and the floor surface. Moreover, 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.

Japanese Patent No. 4927450

By the way, when draining the water from the bathtub, the water in the bathtub is stored and drained, so a large amount of the drain will flow into the drain pipe. Since the diameter of the siphon drain pipe is smaller than that of the conventional sloped pipe, there is a risk that the drain from the bathtub will overflow into the washing area through the drain trap of the washing area until the siphon force is generated in the siphon drain pipe. For this reason, a temporary storage tank like the above-described conventional example has been devised.

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

On the other hand, it is conceivable that the drainage from the bathtub and the drainage from the washing area can be drained through separate drainage systems to lower the floor without installing a temporary storage tank, but in this case, drainage from the bathtub side during maintenance It becomes difficult to access the system, and workability may decrease.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drainage structure and a siphon drainage system capable of further lowering the floor while suppressing deterioration of workability during maintenance.

The drainage structure according to the invention described in claim 1 comprises: a first water-related device that serves as a sump drain that drains water after being stored; and a second water-related device that serves as continuous drainage without storing water a first drainage trap provided in the drainage portion of the first water-related equipment; a second drainage trap provided in the drainage portion of the second water-related equipment; and a downstream side of the first drainage trap. A first siphon drain pipe connected to the second drain trap, a second siphon drain pipe connected to the downstream side of the second drain trap, and provided in a flow path directed downstream from the first drain trap, and with the outside and an inspection port that communicates with the inside of the first drainage trap, the inspection port being provided in the vicinity of the drainage part of the second water-related equipment, and the inspection port and the second water The drainage part of the surrounding device is covered with the same lid .

According to the first aspect of the invention, the first water-related appliance is a accumulating drain that is drained after the drain is stored. This first water-related equipment has a first drainage trap provided in a drainage section, and a first siphon drainage pipe connected to the downstream side of the first drainage trap. On the other hand, in the second water-related equipment, continuous drainage without water storage is used. This second water-related appliance has a second drainage trap provided in the drainage section, and a second siphon drainage pipe connected to the downstream side of the second drainage trap. An inspection port that communicates the outside with the inside of the first drain trap is provided in the flow path from the first drain trap toward the downstream side. Therefore, even if the first water-related device is a device such as a bathtub in which maintenance of the first drain trap is difficult, maintenance of the inside of the first drain trap can be easily performed through the inspection opening.
Further, according to the first aspect of the invention, the inspection port is provided in the vicinity of the drainage part of the second water-related equipment and is covered by the same lid body as the drainage part of the second water-related equipment. It is Therefore, since the inspection port is not exposed to the outside together with the drainage portion of the second plumbing equipment, the appearance design can be improved.

The drainage structure according to the invention described in claim 2 comprises: a first water-related device that serves as a sump drain that drains water after being stored; and a second water-related device that serves as continuous drainage without storing water a first drainage trap provided in the drainage portion of the first water-related equipment; a second drainage trap provided in the drainage portion of the second water-related equipment; and a downstream side of the first drainage trap. A first siphon drain pipe connected to the second drain trap, a second siphon drain pipe connected to the downstream side of the second drain trap, and provided in a flow path directed downstream from the first drain trap, and with the outside An inspection port that communicates with the inside of the first drainage trap, and a downstream portion of the first drainage trap and a downstream portion of the second drainage trap are connected, and at least a part of the pipeline is the first drainage trap. and a first bypass pipe located above both the second drain trap .

According to the second aspect of the invention, the first water-related appliance is a accumulating drain in which the drain is drained after being stored. This first water-related equipment has a first drainage trap provided in a drainage section, and a first siphon drainage pipe connected to the downstream side of the first drainage trap. On the other hand, in the second water-related equipment, continuous drainage without water storage is used. This second water-related appliance has a second drainage trap provided in the drainage section, and a second siphon drainage pipe connected to the downstream side of the second drainage trap. An inspection port that communicates the outside with the inside of the first drain trap is provided in the flow path from the first drain trap toward the downstream side. Therefore, even if the first water-related device is a device such as a bathtub in which maintenance of the first drain trap is difficult, maintenance of the inside of the first drain trap can be easily performed through the inspection opening.
Furthermore, according to the second aspect of the invention, since the waste water from the first water-related equipment is a pooled waste water that is drained after the water is stored, it is much more than the waste water from the second water-related equipment. of wastewater is drained at once. Excess waste water flows into the first bypass pipe until a siphon force is generated in the first siphon drain pipe. Air in the first bypass pipe is pushed out to the second drain trap side as the drain water flows in. At least part of the first bypass pipe is located above both the first and second drain traps, so that the waste water that has flowed into the first bypass pipe is less likely to flow toward the second drain trap. . When a siphon force is generated in the first siphon drain pipe, the waste water from the first plumbing fixture and the waste water flowing into the first bypass pipe are rapidly discharged through the first siphon drain pipe. As a result, it is possible to suppress overflowing of the drained water from the first water-related equipment to the second water-related equipment.
On the other hand, the drainage from the second plumbing appliance is continuous drainage without water storage. Air in the pipe is pushed out through the first bypass pipe to the first drain trap side, so that the drain from the second plumbing appliance is smoothly performed. When a siphon force is generated in the second siphon drain pipe, the waste water from the second plumbing fixture is rapidly discharged through the second siphon drain pipe.

According to a third aspect of the present invention, there is provided a drainage structure according to the first or second aspect of the invention, in which a flow path from the first drainage trap to the inspection port extends obliquely upward.

According to the third aspect of the invention, since the flow path extending from the first drain trap to the inspection port extends obliquely upward, it is possible to keep the sealed water in the first drain trap. .

According to a fourth aspect of the present invention, there is provided a drainage structure according to any one of the first to third aspects of the invention, wherein the inside of the first drainage trap is visible from the inspection opening.

According to the fourth aspect of the invention, since the inside of the first drainage trap can be visually recognized through the inspection opening, workability is improved when performing maintenance on the inside of the first drainage trap through the inspection opening.

Here, "the inside of the first drainage trap" is at least one of the inner peripheral surface side of the bottom of the first drainage trap and the inner peripheral surface side of the side surface of the first drainage trap. In a state where there is sealing water, the water surface of the sealing water may be included.

According to a fifth aspect of the invention, there is provided a drainage structure according to the second aspect of the invention, wherein the first bypass pipe allows a flow from the second drainage trap side to the first drainage trap side, A first check valve is provided that does not allow flow on the opposite side.

According to the fifth aspect of the invention, since the first bypass pipe is provided with the first check valve, a large amount of waste water is drained at once from the first drain trap side to the second drain trap side. flow to is suppressed. Therefore, it is possible to prevent the drainage from the first drainage trap from overflowing into the second drainage trap.

According to a sixth aspect of the present invention, there is provided a drainage structure according to the second or fifth aspect of the invention, wherein the first bypass pipe is provided with an intake valve.

According to the sixth aspect of the invention, when negative pressure is generated in the first bypass pipe, such as when draining water from the first water-related appliance and the second water-related appliance at the same time, outside air is discharged from the intake valve. Since the water is taken in, it is possible to prevent the seals of the first and second drain traps from being broken.

According to a seventh aspect of the present invention, there is provided a drainage structure according to any one of the second, fifth and sixth aspects, wherein a ventilation pipe is connected to the first bypass pipe.

According to the seventh aspect of the invention, when a negative pressure is generated in the first bypass pipe, such as when the first water-related equipment and the second water-related equipment are drained at the same time, outside air flows from the ventilation pipe. Since the water is taken in, it is possible to prevent the seals of the first and second drain traps from being broken.

The drainage structure according to the invention of claim 8 is, in the invention of claim 7 , connected to another drainage trap provided for another water-related appliance and to the downstream side of the other drainage trap. a siphon drain pipe, an individual vent pipe connected to the downstream side of the other drain trap, a header to which the vent pipe and the individual vent pipe are connected, and a header connected to the header and open to the atmosphere and a confluent trachea.

According to the eighth aspect of the invention, the vent pipes and the individual vent pipes are assembled in the header, and are open to the atmosphere through the combined vent pipes. Therefore, there is no need to extend the ventilation pipes or individual ventilation pipes to the outside. As a result, air can be sucked and exhausted all at once, and the number of parts can be reduced compared to the case where the vent pipes and the individual vent pipes are individually opened to the atmosphere.

In the drainage structure according to the invention of claim 9 , in the invention of any one of claims 2 and 5 to 8 , at a position lower than the top of the first bypass pipe, the A second bypass pipe connects the first drain trap side and the second drain trap side, and has a bottom surface of the pipeline arranged lower than the top surface of the second drain trap.

According to the ninth aspect of the invention, even in the case where the second drain trap is not completely filled and the water is full, excess drain water passes through the second bypass pipe and is connected to the downstream side of the first drain trap. 1 flow to the siphon drainpipe. Therefore, it is possible to prevent the waste water from overflowing the second waste water trap.

The drainage structure according to the invention of claim 10 is, in the invention of claim 9 , having a drainage pipe connecting the second drainage trap and the second siphon drainage pipe, and in the second bypass pipe The bottom surface of the pipeline is arranged higher than the bottom surface of the drain pipe.

According to the tenth aspect of the invention, the drainage from the second drain trap does not always flow to the second bypass pipe, and the second siphon drain pipe quickly fills up, so the siphon start-up is delayed. no.

In the drainage structure according to the invention of claim 11 , in the invention of claim 9 or 10 , the second bypass pipe has a flow from the second drainage trap side to the first drainage trap side. A second check valve is provided to allow flow on the opposite side and not allow flow on the opposite side.

According to the eleventh aspect of the invention, since the second bypass pipe is provided with the second check valve, the flow from the first drain trap side to the second drain trap side through the second bypass pipe is suppressed. be done.

The drainage structure according to the invention according to claim 12 is the invention according to any one of claims 1 to 11 , wherein the downstream portion of the first drainage trap and the downstream portion of the second drainage trap at least one of which has an auxiliary chamber.

According to the twelfth aspect of the invention, the auxiliary chamber can receive excess drainage exceeding the capacity of the first bypass pipe. When the water pumped up from the first water-related equipment is used in the second water-related equipment, a larger amount of water than usual is discharged from the second water-related equipment. Even in such a case, by receiving the drainage in the auxiliary chamber, it is possible to prevent the drainage from the second plumbing appliance from being stagnant. In addition, it is possible to deal with a larger amount of stored and drained water from the first water-related equipment.

A siphon drainage system according to the invention of claim 13 has a drainage stack arranged in the vertical direction of a building, and the drainage structure according to any one of claims 1 to 12 . , The first siphon drain pipe and the second siphon drain pipe each comprise a horizontal drain pipe for flowing waste water in a horizontal direction, and a vertical pipe connected to the drain stack pipe for flowing waste water downward from the horizontal drain pipe. have.

According to the thirteenth aspect of the present invention, the drainage from the first plumbing appliance can be flowed to the drainage stack through the horizontal pipe and the vertical pipe of the first siphon drainage pipe. In addition, the drainage from the second plumbing equipment can be flowed to the drainage stack through the horizontal pipe and the vertical pipe of the second siphon drainage pipe.

According to the drainage structure and the siphon drainage system according to the present invention, it is possible to provide a drainage structure and a siphon drainage system that can further lower the floor while suppressing deterioration of workability during maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the outline|summary of the siphon drainage system which concerns on 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the outline of the drainage structure which concerns on 1st Embodiment. FIG. 4 is a cross-sectional view showing the initial stage of draining water from the bathtub in the drainage structure according to the first embodiment. FIG. 4 is a cross-sectional view showing a drain state after generation of a siphon force; FIG. 4 is a cross-sectional view showing a state of drainage from a washing place in the drainage structure according to the first embodiment; 1 is a plan view showing a bathroom having a drainage structure according to the first embodiment, viewed from above; FIG. FIG. 7 is a cross-sectional view taken along line AA in FIG. 6; FIG. 2 is an exploded perspective view showing a detachable apron of a bathtub in the drainage structure according to the first embodiment. FIG. 10 is a plan view showing a bathroom having a drainage structure according to a modified example of the first embodiment, viewed from above. 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. 2 is a perspective view schematically showing a drainage structure according to Reference Example 1. FIG. FIG. 11 is a perspective view schematically showing a drainage structure according to Reference Example 2; It is a sectional view showing the drainage structure concerning a 5th embodiment. It is a sectional view showing the drainage structure concerning a 6th embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described based on the drawings.

[First embodiment]
In FIG. 1 , a siphon drainage system 10 according to this embodiment has a drainage stack 14 and a drainage structure 16 .

The drainage stack 14 passes through a through hole 25 in a floor slab 24 of the building 15. - 特許庁This drainage stack 14 is provided with a drainage joint 28 that connects the vertical pipes 31B and 32B, which will be described later. It is configured to merge with the waste water from the In the drawings used in the following explanation, in order to explain the piping structure in an easy-to-understand manner, pipe fittings, pipes, the configuration of the connecting parts of each pipe, the direction of the pipes, etc. are omitted or simplified as appropriate. It is

(drainage structure)
The drainage structure 16 includes a bathtub 11 as an example of a first water-related appliance, a washing area 12 as an example of a second water-related appliance, a first drainage trap 21, a second drainage trap 22, and a first bypass pipe 18. , a first siphon drain pipe 31 and a second siphon drain pipe 32 .

The bathtub 11 is an example of a first water-related equipment that is used by storing water 20, and the wastewater is a accumulating wastewater that is drained after the water is stored. The washing place 12 is an example of the second water-related equipment, and the drainage is continuous drainage without stored water. A bathtub 11 and a washing place 12 are adjacent to each other with a gap S therebetween. The bathtub 11 and the washing area 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 water-sealed traps for preventing backflow of foul odors, gases, and the like. The first drain trap 21 is provided in the drain section 41 of the bathtub 11 . The second drain trap 22 is provided in the drain section 42 of the wash area 12 .

As shown in FIG. 2, the first bypass pipe 18 connects a drain pipe 51, which is an example of a downstream portion of the first drain trap 21, and a drain pipe 52, which is an example of a downstream portion of the second drain trap 22. It is a tube that The first bypass pipe 18 is provided in the gap S (see FIG. 1) between the bathtub 11 and the washing place 12 so as not to be seen by the user during normal use. By providing the first bypass pipe 18 in the gap S, the space can be effectively used. Note that the first bypass pipe 18 may be provided at other locations such as between the bathroom and the wall of the building (not shown).

As shown in FIG. 3 , at least a portion of the pipeline in the first bypass pipe 18 , such as the uppermost portion 18</b>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 top surface 21 A of the first drain trap 21 and above the top surface 22 A of the second drain trap 22 . The first bypass pipe 18 is formed, for example, in an inverted U shape, and includes a vertical pipe portion 18A on the side of the first drain trap 21, a vertical pipe portion 18B on the side of the second drain trap 22, and a connecting portion of the vertical pipe portions 18A and 18B. 18D. The connecting portion 18D extends, for example, in the horizontal direction. The uppermost portion 18H is the bottom surface of this pipeline, and the bottom surface is located above both the first drain trap 21 and the second drain trap 22. As shown in FIG. If the height of the bottom surface of the pipeline at the connecting portion 18D is not constant, the highest position is the top portion 18H. Although the uppermost portion 18H is mentioned as at least a part of the pipeline of the first bypass pipe 18, the portion other than the uppermost portion 18H is located above both the first drain trap 21 and the second drain trap 22. You may have Also, FIG. 3 omits a cleaning port 58, which will be described later.

The drain pipe 51 includes an upper horizontal pipe portion 51A extending laterally from the first drain trap 21 and joining the vertical pipe portion 18A of the first bypass pipe 18, and a vertical pipe portion 51B extending downward from the lower end of the vertical pipe portion 18A. , and a lower horizontal tube portion 51C extending laterally from the lower end of the vertical tube portion 51B. Similarly, the drain pipe 52 includes an upper horizontal pipe portion 52A extending laterally from the second drain trap 22 and joining the vertical pipe portion 18B of the first bypass pipe 18, and a vertical pipe extending downward from the lower end of the vertical pipe portion 18B. It has a portion 52B and a lower horizontal tube portion 52C extending laterally from the lower end of the vertical tube portion 52B. The configuration of the drainage pipes 51 and 52 is not limited to this, and any configuration that allows drainage from the first drainage trap 21 and the second drainage trap 22 may be used.

An intake valve 30 is provided in the first bypass pipe 18 . The intake valve 30 is a component for allowing air from the outside to pass through to the first bypass pipe 18 and for preventing drainage and air from passing from the first bypass pipe 18 to the outside. The intake valve 30 is provided, for example, at the upper end of the extension portion 18C of the vertical pipe portion 18A. Including this extended portion 18C, the first bypass pipe 18 can be said to be formed in the shape of a mirrored letter that is an inverted h-letter. When viewed from the opposite side, the first bypass pipe 18 is h-shaped. Note that the intake valve 30 may be provided at the connecting portion 18</b>D of the first bypass pipe 18 . Also, the extension portion 18C and the intake valve 30 may be provided above the vertical pipe portion 18B.

The height position of the uppermost portion 18H of the first bypass pipe 18 is desirably equal to or higher than the height position of the standard water head H of the water 20 stored in the bathtub 11 . The reference of the water head H is the bottom of the bathtub 11, for example. The standard water head H corresponds to the amount of hot water stored in the bathtub 11 when a person takes a bath, for example, the amount of hot water that does not overflow the bathtub 11 when the person sits down in the bathtub 11 . The uppermost portion 18H is the maximum height at which overflow does not occur between the vertical pipe portions 18A and 18B of the first bypass pipe 18, and corresponds to the height of the bottom surface of the connecting portion 18D.

In FIG. 2, the first siphon drain pipe 31 is connected downstream of the first drain trap 21 and the first bypass pipe 18 . Also, the second siphon drain pipe 32 is connected downstream of the second drain trap 22 and the first bypass pipe 18 .

Specifically, the first siphon drain pipe 31 is connected to the end of the lower horizontal pipe portion 51C of the drain pipe 51 . Also, in FIG. 1, the first siphon drain pipe 31 has a horizontal pipe 31A that allows drainage to flow in the horizontal direction, and a vertical pipe 31B that is connected to the drainage stack 14 and allows drainage from the horizontal pipe 31A to flow downward. is doing. The second siphon drain pipe 32 has a horizontal drain pipe 32A for laterally draining the waste water, and a vertical pipe 32B connected to the drain stack 14 for draining the drain downward from the lateral drain pipe 32A. Lower ends of the vertical pipes 31B and 32B are connected to the drain joint 28. As shown in FIG. The first siphon drain pipe 31 is arranged in parallel with the second siphon drain pipe 32 on the far side.

As shown in FIG. 6, a drainage portion 41 is provided substantially in the longitudinal center of the bottom portion 11A of the bathtub 11 and on the washing place 12 side. As shown in FIG. 7, the first drain trap 21 is formed by extending a portion of the downstream flow path (drain pipe 51) obliquely upward toward the downstream side, followed by the floor slab. 24 (see FIG. 1). In other words, the drain pipe 51 has an upward projection. Therefore, the amount of water that does not exceed the convex portion stays in the first drain trap 21 and the drain pipe 51 as sealing water. A convex portion of the drain pipe 51 is in contact with a bottom wall 54A of a drain concave portion 54, which will be described later. A cleaning port 58 is provided as an inspection port. Therefore, the inside of the first drain trap 21 can be visually recognized from the cleaning port 58 . Therefore, when there is sealed water in the first drain trap 21 , the water surface of the sealed water can be visually recognized from the cleaning port 58 . The cleaning port 58 has a diameter that allows insertion of a general cleaning tool, for example, and is covered with a removable cleaning port lid 60 . In this embodiment, as an example, the drain pipe 51 is bent into a substantially U shape and connected to the first bypass pipe 18 in the gap S (see FIG. 1).

A drainage concave portion 54 is formed in the drainage portion 42 of the washing place 12 . The drain recess 54 is recessed downward with respect to the floor of the washing place 12 and, for example, is formed integrally with the floor of the washing place 12 .

The drainage concave portion 54 is covered with a perforated plate lid 64 as a removable lid. Further, as shown in FIG. 6, a second drain trap 22 is arranged below the bottom wall 54A of the drain recess 54 and adjacent to the drain pipe 51 connected to the first drain trap 21. 2. A drain port 22B communicating with the inside of the drain trap 22 is formed in the bottom wall 54A of the drain recess 54. As shown in FIG. With the above configuration, the perforated lid 64 prevents foreign matter from entering, and the hot water used for washing the body, the hot water overflowing from the bathtub 11, etc. It is a possible configuration.

As shown in FIG. 8, in the drainage structure 16, an apron 40 forming the side surface of the washing area 12 on the bathtub 11 side may be detachable. In this case, the drainage structure 16 can be easily maintained by removing the apron 40 .

(Action and effect of the embodiment)
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 is drained after being stored, so compared to the drainage from the washing place 12, much drainage is drained at once. be done. Drainage from the bathtub 11 flows through the first drain trap 21, the upper horizontal pipe portion 51A, the vertical pipe portion 51B, and the lower horizontal pipe portion 51C of the drain pipe 51 to the first siphon drain pipe 31 (arrow A direction). Excess waste water 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 toward the second drain trap 22 (in the direction of arrow C) as the drain water flows.

The first bypass pipe 18 is formed in an inverted U shape, and since the uppermost portion 18H of the pipe line is positioned above both the first drain trap 21 and the second drain trap 22, the water flows into the first bypass pipe 18. It is difficult for the drained water to flow toward the second drain trap 22 side. In particular, when the height position of the uppermost portion 18H of 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 tube portion 18B is unlikely to occur. It should be noted that an overflow to the extent that the water seal 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 waste water from the bathtub 11 and the waste water flowing into the first bypass pipe 18 are rapidly discharged through the first siphon drain pipe 31 (arrow A direction), and the water level in the bathtub 11 decreases (direction of arrow D). At this time, outside air is taken into the first bypass pipe 18 from the intake valve 30 (in the direction of arrow E), so that negative pressure acting on the second drain trap 22 side is suppressed. Therefore, the water seal of the second drain trap 22 is not broken.

As described above, according to the drainage structure 16, it is possible to suppress the flooding of the drained water from the bathtub 11 into the washing area 12 without using a temporary storage tank as in the conventional art.

On the other hand, in FIG. 5, the drainage from the washing area 12 is continuous drainage without water storage. Drainage from the washing area 12 passes through the second drain trap 22 and flows through the upper horizontal pipe portion 52A, the vertical pipe portion 52B, and the lower horizontal pipe portion 52C of the drain pipe 52 to the second siphon drain pipe 32 (arrow F direction). The air in the first bypass pipe 18 is pushed out through the first bypass pipe 18 toward the first drain trap 21 (in the direction of arrow G), so that the washing area 12 is drained smoothly. Since there is almost no water head in the case of continuous drainage, the drainage does not flow into the vertical pipe portion 18B of the first bypass pipe 18 . When a siphon force is generated in the second siphon drain pipe 32, the waste water from the washing area 12 is rapidly discharged through the second siphon drain pipe 32 (in the direction of arrow F). At this time, if the water is drained only from the washing area 12, the first bypass pipe 18 will hardly have negative pressure. Since outside air is taken in from the intake valve 30, the water seals of the first drain trap 21 and the second drain trap 22 are 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 pipe 31A and the vertical pipe 31B of the first siphon drainage pipe 31 . Moreover, in this siphon drainage system 10, the drainage from the washing place 12 can be flowed to the drainage stack 14 through the horizontal pipe 32A and the vertical pipe 32B of the second siphon drainage pipe 32.

As shown in FIG. 6, the drain pipe 51, which is a flow path from the first drain trap 21 toward the downstream side, is provided with a cleaning port 58 that communicates the inside of the first drain trap 21 with the outside. Therefore, the inside of the first drain trap 21 on the bathtub 11 side can be easily maintained through the cleaning port 58 . This makes it possible to further lower the floor while suppressing deterioration in workability during maintenance.

The cleaning port 58 is provided in the vicinity of the drainage part 42 of the washing place 12 and is covered with the same perforated plate lid 64 as the drainage part 42 of the washing place 12 . In other words, the cleaning port 58 is close enough to be covered by the same perforated lid 64 as the drainage part 42, and the perforated lid 64 is large enough to be attached and detached manually. Therefore, since the cleaning port 58 is not exposed to the outside, the appearance design can be improved.

Furthermore, as shown in FIG. 7, since the channel extends obliquely upward from the first drain trap 21 toward the cleaning port 58, it is possible to keep the sealing water in the first drain trap 21. can be done.

Furthermore, since the inside of the first drain trap 21 can be viewed through the cleaning port 58, the workability of performing maintenance on the inside of the first drain trap 21 through the cleaning port 58 is improved.

As described above, according to the drainage structure 16 and the siphon drainage system 10 according to the present embodiment, a temporary storage tank unlike the conventional one is not required, so that the installation location of the bathtub 11 or the like in which water is accumulated and drained can be further reduced. Can be floored.

In the above-described embodiment, the cleaning port 58 is provided in the vicinity of the drainage part 42 of the washing place 12. However, as shown in FIG. may be provided in

[Second embodiment]
In FIG. 10, the drainage structure 26 according to this embodiment has auxiliary chambers 71 and 72 in at least one of, for example, both of the downstream portion of the first drainage trap 21 and the downstream portion of the second drainage trap 22. there is The auxiliary chamber 71 is provided downstream of the first drain trap 21 . The auxiliary chamber 72 is provided downstream 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 dimension of the auxiliary chambers 71 and 72 is set smaller than that of the conventional temporary storage tank, and they are arranged in the space required for arranging the first drain trap 21, the second drain trap 22 and the drain pipes 51 and 52. be as large as possible. Therefore, no extra underfloor space is required for installation of the auxiliary chambers 71 and 72 .

In the illustrated example, both the auxiliary chambers 71 and 72 are arranged on the upstream side of the first bypass pipe 18, but one or both of the auxiliary chambers 71 and 72 are arranged on the downstream side of the first bypass pipe 18. may be placed.

In this drainage structure 26 , the auxiliary chambers 71 and 72 can receive excess drainage exceeding the capacity of the first bypass pipe 18 . 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 than usual is discharged from the washing place 12. - 特許庁Even in such a case, by receiving the waste water in the auxiliary chambers 71 and 72, the waste water from the washing place 12 can be prevented from becoming stagnant. In addition, it is possible to deal with a larger amount of accumulated and drained water from the bathtub 11. - 特許庁

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

[Third embodiment]
11, in the drainage structure 36 according to this embodiment, the first bypass pipe 18 is connected to a vent pipe 74 that replaces the intake valve 30 (FIG. 2). The ventilation pipe 74 extends, for example, to the outside of the building, and the end 74A is open to the atmosphere.

Since the drainage structure 36 is provided with the ventilation pipe 74 instead of the intake valve 30 (FIG. 2), the installation space for the intake valve 30 is not required.

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

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

[Fourth embodiment]
12, the drainage structure 46 according to this embodiment has other drainage traps 83, 84, siphon drainage pipes 93, 94, individual air pipes 103, 104, a header 80, and a combined air pipe 90. is doing.

Another drain trap 83 is provided for a drain (not shown) of a washing machine, which is an example of another water-related appliance. Another drain trap 84 is provided for a washbasin, which is an example of another plumbing appliance. The other drain traps 83 and 84 are so-called water-sealed traps for preventing backflow of foul odors, gases, and the like.

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 . 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 .

One end of the individual vent pipe 103 is connected to a downstream portion (drain pipe 113 ) of the other drain trap 83 . Also, one end of the individual vent pipe 104 is connected to the downstream side portion (drain pipe 114) of the other drain trap 84. As shown in FIG. The other ends of the individual vent pipes 103 and 104 are connected to headers 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 confluence trachea 90 is connected to the header 80 and open to the atmosphere. Specifically, the confluence trachea 90 extends to the outside of a building, for example, and the end 90A is open to the atmosphere.

In this drainage structure 46, the ventilation pipe 74 and the individual ventilation pipes 103, 104 are provided in place of the intake valve 30 (FIG. 2), so the installation space for the intake valve 30 is not required. Also, the vent pipe 74 and the individual vent pipes 103 and 104 are assembled in the header 80 and are open to the atmosphere through the combined vent pipe 90 . Therefore, it is not necessary to extend the vent pipe 74 and the individual vent pipes 103 and 104 to the outside. As a result, air can be sucked and exhausted all at once, and the number of parts can be reduced compared to the case where the vent pipe 74 and the individual vent pipes 103 and 104 are individually opened to the atmosphere.

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

[Reference example 1]
In FIG. 13 , in the drainage structure 56 according to this reference example, the first siphon drainage pipe 31 is connected to the downstream side of the drainage pipe 51 extending from the first drainage 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 drainage trap 21 and the drainage path from the second drainage trap 22 are independent of each other.

Therefore, even if the first drainage trap 21 is drained, the drainage will not flow into the second drainage trap 22 side. For this reason, it is possible to prevent the accumulated wastewater from the bathtub 11 from overflowing into the washing area 12 (FIG. 1).

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

[Reference example 2]
In FIG. 14, a drainage structure 66 according to this reference example is provided with intake valves 111 and 112 in addition to 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 . Also, 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 similar to that of the intake valve 30 of the first embodiment.

In this reference example, as in the first reference example, even if the first drain trap 21 is used to collect and drain water, the drain water does not flow into the second drain trap 22 side. For this reason, it is possible to prevent the accumulated wastewater from the bathtub 11 from overflowing into the washing area 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 water from the first drain trap 21 . Further, since the intake valve 112 is added to the drain pipe 52 , outside air is taken in from the intake valve 112 when draining water from the second drain trap 22 . Therefore, both the drainage from the first drainage trap 21 and the drainage from the second drainage trap 22 are facilitated to flow.

Since other parts are the same as those of the first embodiment or the first reference example, the same parts are denoted by the same reference numerals in the drawings, and descriptions thereof are omitted.

[Fifth embodiment]
In FIG. 15, the drainage structure 86 according to this 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 top of the first bypass pipe 18 . The bottom surface of the second bypass pipe 218 is positioned lower than the top surface 22A of the second drain trap 22 . The bottom surface of the second bypass pipe 218 is arranged higher than the bottom surface 52D of the upper horizontal pipe portion 52A of the drain pipe 52 .

The second bypass pipe 218 extends laterally, for example. Note that the second bypass pipe 218 may be inclined or curved with respect to the horizontal direction. In this way, when the height of the bottom surface of the second bypass pipe 218 is not constant, the highest position of the bottom surface is lower than the top surface 22A 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, a connecting portion 18D of the first bypass pipe 18 . The first check valve 19 is configured to allow flow from the side of the second drain trap 22 to the side of the first drain trap 21 and not allow flow on the opposite side. The position of the first check valve 19 is not limited to the connection portion 18D, and may be provided, for example, in the vertical pipe portion 18B. Also, the first check valve 19 may be configured to allow a certain amount of flow from the first drain trap 21 side to the second drain trap 22 side.

A second check valve 219 is provided in the second bypass pipe 218 . The second check valve 219 is configured to allow flow from the second drain trap 22 side to the first drain trap 21 side and not allow flow on the opposite side. The second check valve 219 may be configured to allow a certain amount of flow from the first drain trap 21 side to the second drain trap 22 side.

Even if the drainage from the washing area 12 does not completely enter the second drainage trap 22 and the second drainage trap 22 is filled with water, according to this embodiment, excess drainage passes through the second bypass pipe 218 and the vertical pipe portion 51B of the drainage pipe 51. , and the lower horizontal pipe portion 51C to the first siphon drain pipe 31 (FIG. 1) (in the direction of arrow H). In this embodiment, the bottom surface of the second bypass pipe 218 is arranged higher than the bottom surface 52D of the upper horizontal pipe portion 52A of the drain pipe 52 . Therefore, the drainage from the washing place 12 does not always flow to the second bypass pipe 218, and the second siphon drainage pipe 32 is quickly filled up, so that the activation of the siphon is not delayed.

Further, in this embodiment, the bottom surface of the second bypass pipe 218 is positioned lower than the top surface 22A of the second drain trap 22 . Therefore, when the waste water is about to overflow from the second waste water trap 22, the waste water flows to the second bypass pipe 218, so that the waste water from overflowing from the second waste water trap 22 can be suppressed.

Furthermore, since the second bypass pipe 218 is provided with the second check valve 219, the flow from the first drain trap 21 side to the second drain trap 22 side through the second bypass pipe 218 is suppressed. In addition, since the connection portion 18D of the first bypass pipe 18 is provided with the first check valve 19, when draining water from the bathtub 11, the water is discharged from the first drain trap 21 through the first bypass pipe 18 to the second drain trap. The flow to the 22 side, that is, the overflow from the vertical pipe portion 18A to the vertical pipe portion 18B is more difficult to occur.

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

[Sixth embodiment]
In FIG. 16, a drainage structure 76 according to this embodiment has a configuration in which 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, by appropriately setting the height of the uppermost portion 18H, overflow occurs between the vertical pipe portions 18A and 18B of the first bypass pipe 18. You can avoid it. 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]
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.

Although the bathtub 11 is given as an example of the first water-related equipment, the first water-related equipment may be a device such as a washing machine that collects and drains the waste water. In addition, although the washing place 12 is given as an example of the second water-related equipment, the second water-related equipment may be a device such as a washstand, a kitchen, a dishwasher, etc., in which drainage is continuously discharged.

Although the drain pipe 51 is mentioned as an example of the downstream portion of the first drain trap 21 to which the first bypass pipe 18 is connected, the downstream portion is not limited to this. Similarly, although the drain pipe 52 was mentioned as an example of the downstream portion of the second drain trap 22 to which the first bypass pipe 18 is connected, the downstream portion is not limited 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 first bypass pipe 18 is provided with the intake valve 30, the intake valve 30 may be omitted if the water seals of the first drain trap 21 and the second drain trap 22 are not broken.

DESCRIPTION OF SYMBOLS 10...Siphon drainage system, 11...Bathtub (first water-related apparatus), 12...Washing place (second water-related apparatus), 14...Drainage stack, 16...Drainage structure , 18... First bypass pipe, 19... First check valve, 21... First drainage trap, 22... Second drainage trap, 26... Drainage structure, 30... Air intake Valve 31 First siphon drain pipe 31A Horizontal pipe 31B Vertical pipe 32 Second siphon drain pipe 32A Horizontal pipe 32B Vertical Pipe, 36... Drainage structure, 41... Drainage part, 42... Drainage part, 46... Drainage structure, 52... Drainage pipe, 52D... Bottom surface, 58... Cleaning port ( Inspection port), 64 Perforated lid (lid body), 71 Auxiliary chamber, 72 Auxiliary chamber, 74 Vent pipe, 76 Drainage structure, 80 Header, 83... Other drainage trap, 84... Other drainage trap, 86... Drainage structure, 90... Combining flow tube, 93... Siphon drain pipe, 94... Siphon drain pipe, 103 ... individual ventilation pipe, 104 ... individual ventilation pipe, 218 ... second bypass pipe, 219 ... second check valve

Claims (13)

a first water-related device, in which the waste water is stored and drained after the water is stored;
a second water-related device in which the drainage is continuous drainage without stored water;
a first drainage trap provided in the drainage section of the first water-related equipment;
a second drainage trap provided in the drainage part of the second water-related equipment;
a first siphon drain pipe connected to the downstream side of the first drain trap;
a second siphon drain pipe connected downstream of the second drain trap;
an inspection port provided in a flow path extending downstream from the first drain trap and communicating between the outside and the inside of the first drain trap;
has
The inspection port is provided in the vicinity of the drainage part of the second plumbing equipment,
A drainage structure in which the inspection port and the drainage portion of the second water-related equipment are covered with the same lid . a first water-related device, in which the waste water is stored and drained after the water is stored;
a second water-related device in which the drainage is continuous drainage without stored water;
a first drainage trap provided in the drainage section of the first water-related equipment;
a second drainage trap provided in the drainage part of the second water-related equipment;
a first siphon drain pipe connected to the downstream side of the first drain trap;
a second siphon drain pipe connected downstream of the second drain trap;
an inspection port provided in a flow path extending downstream from the first drain trap and communicating between the outside and the inside of the first drain trap;
At least a portion of a pipeline connecting a downstream portion of the first drainage trap and a downstream portion of the second drainage trap is located above both the first drainage trap and the second drainage trap. a first bypass pipe;
Drainage structure with A flow path from the first drain trap to the inspection port extends obliquely upward,
The drainage structure according to claim 1 or 2. The inside of the first drainage trap is visible from the inspection port,
The drainage structure according to any one of claims 1 to 3. The first bypass pipe is provided with a first check valve that allows flow from the second drainage trap side to the first drainage trap side and does not allow flow on the opposite side.
The drainage structure according to claim 2 . The drainage structure according to claim 2 or 5 , wherein the first bypass pipe is provided with an intake valve. 7. The drainage structure according to any one of claims 2, 5 and 6 , wherein a vent pipe is connected to said first bypass pipe. other drainage traps provided for other plumbing fixtures;
a siphon drain pipe connected downstream of the other drain trap;
a separate vent pipe connected downstream of the other drain trap;
a header to which the vent pipe and the individual vent pipe are connected;
a confluent trachea connected to the header and open to the atmosphere;
The drainage structure according to claim 7 . The first drain trap side and the second drain trap side of the first bypass pipe are connected at a position lower than the top of the first bypass pipe, and the bottom surface of the pipeline is lower than the top surface of the second drain trap. having a second bypass pipe located low;
The drainage structure according to any one of claims 2 and 5-8. Having a drain pipe connecting the second drain trap and the second siphon drain pipe,
The bottom surface of the conduit in the second bypass pipe is arranged higher than the bottom surface of the drain pipe,
The drainage structure according to claim 9 . The second bypass pipe is provided with a second check valve that allows flow from the second drain trap side to the first drain trap side and does not allow flow on the opposite side.
The drainage structure according to claim 9 or 10 . an auxiliary chamber at least one of the downstream portion of the first drain trap and the downstream portion of the second drain trap;
The drainage structure according to any one of claims 1 to 11 . A drainage stack arranged in the vertical direction of the building;
and a drainage structure according to any one of claims 1 to 12 ,
The first siphon drain pipe and the second siphon drain pipe each have a horizontal pipe for draining wastewater in a horizontal direction, and a vertical pipe connected to the vertical drain pipe for downwardly draining the wastewater from the horizontal drain pipe. Siphonic drainage system.

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