CN110857576A

CN110857576A - Drainage structure

Info

Publication number: CN110857576A
Application number: CN201910778136.8A
Authority: CN
Inventors: 山本正树
Original assignee: Bridgestone Corp
Current assignee: Bridgestone Corp
Priority date: 2018-08-22
Filing date: 2019-08-22
Publication date: 2020-03-03
Also published as: JP2020029710A; JP7160323B2; TW202026492A

Abstract

The invention provides a drainage structure, which can realize further low floor and can inhibit the drainage from overflowing from a drainage bent pipe. The drainage structure (10) comprises: a shower (12); a 2 nd drain trap 22 provided in a drain part of the shower 12; and a 2 nd siphon drain pipe (32) connected to the downstream side of the 2 nd drain trap (22), the 2 nd drain trap (22) having: a deodorizing tank (34) into which drain water from the shower (12) flows; a water seal storage part (310), wherein the lower part of the deodorization cylinder (304) is inserted into the water seal storage part (310), and part of the inflow drainage is stored in the water seal storage part (310) as water seal; a discharge unit (318) that discharges the drain that has passed over the upper end of the water seal storage unit (310) to the 2 nd siphon drain pipe (32); and a temporary storage section (322) which is provided above the discharge section (318) and which can temporarily store the drainage water having a water level exceeding the discharge section (318).

Description

Drainage structure

Technical Field

The present invention relates to a drainage structure.

Background

Patent document 1 discloses a drainage system in which a temporary storage tank for draining water is connected between a water-using appliance such as a bathtub or a shower (japanese utility model い) and a siphon drain pipe. The temporary storage tank is disposed in an underfloor space between the floor slab and the floor surface. Further, the drain pipe of the bathtub is connected to a drain trap provided in the shower, so that the water in the bathtub is drained through the drain pipe of the shower.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 4927450

Disclosure of Invention

Problems to be solved by the invention

When water is drained from a bathtub, the water in the bathtub is collected and drained (japanese: gutter め flow し drainage), and therefore a large amount of drainage flows into a drain pipe. Since the diameter of the pipe of the siphon drain pipe is smaller than that of the conventional gradient pipe, there is a possibility that the drain water from the bathtub overflows into the shower via the drain trap of the shower before the siphon drain pipe generates the siphon force. Therefore, the temporary storage tank as in the above-described conventional example is designed.

However, in order to secure the capacity of the temporary storage tank, the temporary storage tank needs to have a certain height, and an underfloor space needs to be secured according to the height. Therefore, when the temporary storage tank is provided, it is difficult to reduce the floor.

In addition, the drain of the shower is often continuous, and there is no fear that the drain overflows from the drain trap in the case of normal continuous drain of the shower.

However, there are cases where a lot of drain water flows from the shower into the drain trap at a time, and for example, in cases where hot water is stored in the rim of a bathtub and enters the bathtub, many hot water may overflow from the bathtub and flow into the drain trap, and in such cases, drain water may overflow from the drain trap of the shower.

The invention aims to provide a drainage structure which can realize further low floor and can inhibit drainage from overflowing from a drainage bent pipe.

Means for solving the problems

The drainage structure according to claim 1 comprises: a 1 st water tool for discharging water from the 1 st discharge part; a 2 nd water-using tool which discharges water from the 2 nd discharge part; a 1 st drain trap pipe provided in a drain portion of the 1 st water treatment appliance; a 2 nd drain trap pipe provided in a drain portion of the 2 nd water-using appliance; a 1 st bypass pipe connecting a downstream side portion of the 1 st drain trap to a downstream side portion of the 2 nd drain trap; a 1 st siphon drain pipe connected to the 1 st drain trap pipe and a downstream side of the 1 st bypass pipe; and a 2 nd siphon drain pipe connected to a downstream side of the 2 nd drain trap and the 1 st bypass pipe, the 2 nd drain trap having: a deodorization cylinder into which drain water from the 2 nd water-using appliance flows; a water seal storage section formed in a bottomed cylindrical shape having an upper opening, the deodorizing cylinder being inserted at a lower portion thereof, and a part of the inflow drain water being stored as water seal in the water seal storage section; a discharge unit that discharges the drain water that has passed over the upper end of the water seal storage unit to the 2 nd siphon drain pipe; and a temporary storage section provided on a downstream side in a water discharge direction of the water seal storage section and on an upstream side in the water discharge direction of the 2 nd siphon drain pipe, and capable of temporarily storing the drain water.

In the drainage structure according to claim 1, as an example, in the case where the drainage is collected drainage in which drainage is performed after water is stored in the 1 st water appliance and drainage is continuous drainage in the 2 nd water appliance, the following functions are exhibited.

The continuous drainage herein means drainage in which the amount of drainage (flow rate) per unit time is small as compared with at least the flow-through drainage. In many cases, continuous drainage takes longer than the accumulated drainage, but drainage may take shorter than the accumulated drainage.

In the case where the drain from the 1 st water appliance is accumulated drain in which the drain is drained after the water is stored, a large amount of drain is discharged at a time as compared with the drain from the 2 nd water appliance (continuous drain, as an example). Before the 1 st siphon drain pipe generates siphon force, the rest of the drain water flows into the 1 st bypass pipe. In addition, the air in the 1 st bypass pipe is pushed out to the 2 nd drain trap side along with the inflow of the drain.

When the siphon force is generated in the 1 st siphon drain pipe, the drain from the 1 st water appliance and the drain flowing into the bypass pipe are quickly discharged through the 1 st siphon drain pipe.

On the other hand, when the water discharged from the 2 nd water appliance is continuously discharged without storing water, the air in the pipe line is pushed out to the 1 st water discharge elbow pipe side through the 1 st bypass pipe, and therefore, the water is smoothly discharged from the 2 nd water appliance. When the siphon force is generated at the 2 nd siphon drain pipe, the drain water from the 2 nd water using appliance is rapidly discharged through the 2 nd siphon drain pipe.

Sometimes, the 2 nd water use equipment discharges a lot of drainage temporarily instead of continuously draining the drainage. In this case, the drain overflowing from the seal storage portion flows into the 2 nd siphon drain pipe via the drain portion, but the drain capacity of the 2 nd siphon drain pipe 32 may not keep up with the amount of drain flowing into the drain portion until the 2 nd siphon drain pipe generates a siphon force, and the drain may overflow from the 2 nd siphon drain pipe.

However, in the drainage structure according to claim 1, since the drainage flowing into the drainage portion of the 2 nd water appliance can be temporarily stored in the temporary storage portion provided on the downstream side in the drainage direction of the seal storage portion and on the upstream side in the drainage direction of the 2 nd siphon drainage pipe, the drainage can be suppressed from overflowing from the drainage portion of the 2 nd water appliance, in other words, from staying above the drainage portion.

The drainage structure according to claim 2 is the drainage structure according to claim 1, wherein the temporary storage section is provided above the drain section, and temporarily stores the drainage having a water level exceeding the drain section.

In the drainage structure according to claim 2, the drainage water whose water level has risen above the drain portion of the 2 nd drainage trap can be temporarily stored in the temporary storage portion provided above the drain portion, and the drainage water can be prevented from overflowing from the drain portion of the 2 nd water-using appliance.

The drainage structure according to claim 3 is the drainage structure according to claim 1 or 2, wherein the temporary storage portion is formed to have a circular shape in a plan view.

By forming the temporary storage portion to be circular in a plan view, foreign matter in the drainage is less likely to accumulate and cleaning is easier, compared to a shape having corners with corners such as a square.

The drainage structure according to claim 4 is the drainage structure according to any one of claims 1 to 3, wherein at least a part of the pipe line of the 1 st bypass pipe is positioned above both the 1 st drainage bend and the 2 nd drainage bend.

Since at least a part of the pipe line of the 1 st bypass pipe is positioned above both the 1 st drain trap and the 2 nd drain trap, the drain water flowing into the 1 st bypass pipe is less likely to flow toward the 2 nd drain trap. In particular, when the height position of the uppermost portion of the pipe line in the 1 st bypass pipe is the same as the height position of the standard water head of the water stored in the 1 st water appliance, the drain is not easily overflowed in the 1 st bypass pipe.

The drainage structure according to claim 5 is the drainage structure according to any one of claims 1 to 4, wherein an air suction valve is provided in the 1 st bypass pipe.

In the drainage structure according to claim 5, when siphon force is generated in the 1 st siphon drain pipe, the drainage from the 1 st water-using appliance and the drainage flowing into the 1 st bypass pipe are quickly discharged through the 1 st siphon drain pipe. At this time, the self-priming valve introduces the external air into the 1 st bypass pipe, and thus the water seal of the 2 nd drain trap pipe is not broken.

Similarly, when the siphon force is generated in the 2 nd siphon drain pipe, the drain water from the 2 nd water using appliance is rapidly discharged through the 2 nd siphon drain pipe, and the external air is introduced into the 1 st bypass pipe from the suction valve, so that the water seal of the 1 st drain trap is not broken.

The water discharge structure according to claim 6 is the water discharge structure according to any one of claims 1 to 5, further comprising a 2 nd bypass pipe that connects the 1 st water discharge bent pipe side of the 1 st bypass pipe and the 2 nd water discharge bent pipe side of the 1 st bypass pipe at a position lower than an uppermost portion of the 1 st bypass pipe, and a bottom surface of a pipe line of the 2 nd bypass pipe is disposed lower than a top surface of the 2 nd water discharge bent pipe.

In the case where the amount of drain water from the 2 nd water consuming appliance is extremely large and the temporary storage section is not filled with the drain water, the remaining drain water can be discharged to the 1 st siphon drain pipe via the 2 nd bypass pipe. Further, since the bottom surface of the conduit of the 2 nd bypass pipe is disposed lower than the top surface of the 2 nd drain trap, when the drain water overflows from the 2 nd drain trap, the drain water flows to the 2 nd bypass pipe side, and therefore, the drain water can be suppressed from overflowing from the 2 nd drain trap 22.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the drainage structure of the present invention, it is possible to achieve further low floor space and to suppress the drainage from overflowing from the second drainage trap pipe 2.

Drawings

Fig. 1 is a cross-sectional view showing an outline of the water discharge structure of embodiment 1.

Fig. 2 is a longitudinal sectional view of a 2 nd drain trap used in the drain structure of embodiment 1.

Fig. 3 is a perspective view showing a drain path of embodiment 1.

Fig. 4 is a sectional view showing an initial stage when water is drained from a bathtub in the drain structure of embodiment 1.

Fig. 5 is a sectional view showing a state of water drainage after generation of siphon force.

Fig. 6 is a sectional view showing a state of water drainage from a shower in the water drainage structure of embodiment 1.

Fig. 7 is a perspective view schematically showing the drainage structure of embodiment 2.

Fig. 8 is a perspective view schematically showing the drainage structure of embodiment 3.

Fig. 9 is a perspective view schematically showing a drainage structure according to embodiment 4.

Fig. 10 is a perspective view schematically showing the drainage structure of reference example 1.

Fig. 11 is a perspective view schematically showing a drainage structure of reference example 2.

Fig. 12 is a sectional view showing the drainage structure of embodiment 5.

Fig. 13 is a sectional view showing the drainage structure of embodiment 6.

Description of the reference numerals

10. A drainage structure; 11. a bathtub (1 st water appliance); 12. shower (2 nd water utensil); 18. 1 st bypass pipe; 21. 1, a drainage elbow; 22. 2, a drainage bent pipe; 30. an air intake valve; 31. 1 st siphon drain pipe; 32. 2 nd siphon drain pipe; 41. a drain section (1 st drain section); 218. a 2 nd bypass pipe; 304. a deodorizing cylinder; 310. a water seal storage section; 314. an opening (inflow port); 318. a discharge unit; 322. a temporary storage section; 340. an opening (drainage).

Detailed Description

[ embodiment 1]

Hereinafter, embodiment 1 for carrying out the present invention will be described with reference to the drawings.

As shown in fig. 1, the drainage structure 10 of the present embodiment includes a drainage stand pipe 14 and a drainage path 16.

The drainage pipe 14 penetrates through a through hole 25 of a floor 24 of the building 15. The vertical drain pipe 14 is provided with a drain joint 28 that connects vertical pipes 31B and 32B described later, and is configured to join drain from the vertical drain pipe 14 at the upper portion and drain from a water-using appliance such as a bathtub 11 and a shower 12 described later. In fig. 1, the structure of the connection portion of each pipe, such as a pipe joint, is appropriately omitted.

(drainage structure)

The drain path 16 includes a bathtub 11 as an example of a 1 st water appliance, a shower 12 as an example of a 2 nd water appliance, a 1 st drain trap 21, a 2 nd drain trap 22, a 1 st bypass pipe 18, a 1 st siphon drain pipe 31, and a 2 nd siphon drain pipe 32.

The bathtub 11 is used by storing water 20, and the water is drained after the water is stored. The shower 12 is typically drained continuously without a water reservoir. The bathtub 11 and the shower 12 are adjacent to each other with a gap S therebetween. The bathtub 11 and the shower 12 may be integrated with each other as shown in the drawing, or may be independent from each other.

The 1 st and 2

nd drain elbows

21 and 22 are so-called water-sealed elbows for preventing reverse flow of foul odors, gases, and the like. The 1 st drain elbow 21 is provided in a drain portion 41 as an example of the 1 st drain portion of the bathtub 11. The 2 nd drain trap 22 is provided in a drain portion 42 as an example of a drain portion of the shower 12.

(No. 2 drain trap)

The structure of the 2 nd drain trap pipe according to the present embodiment will be described with reference to fig. 2.

As shown in fig. 2, the 2 nd drain trap generally includes an trap body 300, a flange member 302, and an anti-odor cartridge 304.

(Main body of pipe crimping)

The elbow main body 300 has a bottomed cylindrical water seal reservoir 310 in the central portion, and the water seal reservoir 310 serves to store a part of the drain water at a constant depth as a water seal and is composed of an inner tube 306 having an open upper end and a circular bottom wall 308 closing an opening on the lower end side of the inner tube 306. The liquid level WUL of the water seal at normal time is at the same height as the position of the upper end of the inner cylinder 306.

An outer cylinder 314 is disposed radially outward of the inner cylinder 306, and a discharge portion 318 is formed by the outer cylinder 314 and an annular bottom wall 316 that closes an opening on the lower end side of the outer cylinder 314 (an annular opening between the lower end of the outer cylinder 314 and the lower end of the inner cylinder 306). The drain water overflowing from the upper end of the water seal storage portion 310 (the upper end of the inner tube 306) flows into the drain portion 318 through the upper end 314A of the outer tube 314.

In the elbow main body 300 according to the present embodiment, the height position of the upper end 314 of the outer cylinder 314 is located above the upper end 306A of the inner cylinder 306, but the height position of the upper end 314 of the outer cylinder 314 may be located at the same height position as the upper end 306A of the inner cylinder 306 or the height position of the upper end 314 of the outer cylinder 314 may be located below the upper end 306A of the inner cylinder 306, depending on the case. The line indicated by reference numeral 306A in FIG. 2 is an imaginary line indicating the upper end of the inner barrel 306. An upper end 314A of the outer cylinder 314 is an upper end of the discharge portion 318.

A cylindrical discharge port 320 is provided in a side portion of the bottom wall 316 of the outer cylinder 314, and the discharge port 320 discharges the drain water flowing into the discharge portion 318 to the outside of the drain trap. The upper cross pipe portion 52A described later is connected to the discharge port 320.

(temporary storage section)

In the 2 nd drain trap 22 according to the present embodiment, the temporary storage 322 is provided above the opening 314A of the outer cylinder 314 of the trap main body 300, in other words, above the upper end 314A of the outer cylinder 314. The temporary storage 322 is located above the upper end 306A of the inner tube 306. The temporary storage 322 is located below the upper end of the 2 nd drain trap 22 (the upper end of the flange member 302). The temporary storage portion 322 includes an annular outer flange 324, a cylindrical side wall 326, and a cover member 328 that is annular in plan view, the outer flange 324 extending radially outward from the upper end 314A of the outer cylinder 314, the side wall 326 rising upward from the outer peripheral portion of the outer flange 324, and the cover member 328 being disposed on the upper portion of the side wall 326. The outer flange 324 and the side wall 326 are formed integrally with the outer cylinder 314.

The temporary storage section 322 is circular in plan view and is formed concentrically with the water seal storage section 310 which is circular in plan view, and the diameter of the temporary storage section 322 is larger than the diameter of the inner tube 306 of the water seal storage section 310.

The side wall 326 and the cover member 328 may be fixed together by adhesive or the like in a watertight manner so that the drain water does not leak, or the cover member 328 and the side wall 326 may be fixed together in a separable manner by forming a male screw in the side wall 326, forming a female screw in a cylindrical portion 328B formed in an outer peripheral portion of the cover member 328, and screwing the female screw of the cover member 328 to the male screw of the side wall 326.

In other words, the outer flange 324 is a bottom wall of the temporary storage portion 322, and the outer flange 324 that is the bottom wall of the temporary storage portion 322 is inclined such that the radially inner side is located below the radially outer side.

The temporary storage 322 is provided above the upper end 306A of the inner tube 306 constituting the water seal storage 310, and has a function of temporarily storing the drain water when the water level of the drain water is higher than the upper end 306A of the inner tube 306 of the water seal storage 310 and the upper end 314A of the outer tube 314 of the discharge port 320 in the elbow main body 300.

A convex portion 328A is formed on the inner peripheral side of the cover member 328, and a female screw 330 is formed on the inner peripheral portion of the convex portion 328A. An external thread 338 of the flange member 302, which will be described later, is screwed into the internal thread 330.

(Flange member)

The flange member 302 has a cylindrical portion 332, an annular outer flange 334 formed at the upper end of the cylindrical portion 332, and an annular inner flange 336 formed at the lower end of the cylindrical portion 332, and an external thread 338 that is screwed into the internal thread 330 of the cover member 328 is formed on the outer periphery of the cylindrical portion 332.

An annular seal 342 is disposed between the outer flange 334 of the flange member 302 and the convex portion 328A of the cover member 328, and the seal 342 is fitted to the circular hole-shaped drain portion 42 formed in the floor 12A of the shower 12.

The external thread 338 of the flange member 302 is screwed into the internal thread 330 of the cover member 328, and the annular seal 342 is sandwiched between the external flange 334 of the flange member 302 and the projection 328A of the cover member 328, whereby the elbow main body 300 is attached to the floor 12A in a watertight manner.

A mesh-like hair filter (japanese: ヘアキャッチャー)303 is detachably disposed on the upper portion of the flange member 302.

(deodorant canister)

A deodorizing cylinder 304 is inserted into the flange member 302 from above. The deodorizing cylinder 304 has a cylindrical shape, and has a tapered diameter-expanded upper portion and an outer flange 344 formed at the upper end thereof. The outer flange 344 is detachably engaged with the flange member 302. An annular seal 346 is interposed between the outer flange 344 of the deodorizing cylinder 304 and the inner flange 336 of the flange member 302.

The lower opening of the deodorizing cylinder 304 is disposed inside the water seal storage portion 310, and a gap through which drain water passes is provided between the lower end of the deodorizing cylinder 304 and the bottom wall 308 of the water seal storage portion 310.

Next, a piping path of the drain on the downstream side of the drain trap will be described.

As shown in fig. 3 and 4, the 1 st bypass pipe 18 is a pipe body that connects a drain pipe 51, which is an example of a downstream side portion of the 1 st drain trap 21, and a drain pipe 52, which is an example of a downstream side portion of the 2 nd drain trap 22. The 1 st bypass duct 18 is provided in the space S between the bath 11 and the shower 12 and is arranged to be invisible to a user in normal use. By providing the 1 st bypass pipe 18 in the gap S, the space can be effectively used. The 1 st bypass pipe 18 may be provided at another place (not shown) such as between a bathroom and a wall of a building.

At least a part of the 1 st bypass pipe 18, for example, the uppermost part 18H, is located above both the 1 st drain trap 21 and the 2 nd drain trap 22. Here, "above both the 1 st drain trap 21 and the 2 nd drain trap 22" means above the top surface 21A of the 1 st drain trap 21 and above the top surface 22A of the 2 nd drain trap 22. The 1 st bypass pipe 18 is formed in an inverted U shape, for example, and includes a 1 st drain trap 21-side vertical pipe portion 18A, a 2 nd drain trap 22-side vertical pipe portion 18B, and a connecting portion 18D between the vertical pipe portion 18A and the vertical pipe portion 18B. The connecting portion 18D extends, for example, in the horizontal direction. The uppermost portion 18H refers to the bottom surface of the pipe in the connection portion 18D, which is located above both the 1 st drain trap 21 and the 2 nd drain trap 22. When the height of the bottom surface of the pipe line in the connection portion 18D is not constant, the highest position is the uppermost portion 18H. Further, the uppermost portion 18H is given as an example of at least a part of the line of the 1 st bypass pipe 18, but a portion other than the uppermost portion 18H may be located above both the 1 st drain trap 21 and the 2 nd drain trap 22.

The drain pipe 51 includes an upper cross pipe portion 51A extending in the lateral direction from the first drain trap 21 and merging with the vertical pipe portion 18A of the 1 st bypass pipe 18, a vertical pipe portion 51B extending downward from the lower end of the vertical pipe portion 18A, and a lower cross pipe portion 51C extending in the lateral direction from the lower end of the vertical pipe portion 51B. Similarly, the drain pipe 52 includes an upper horizontal pipe portion 52A extending in the lateral direction from the second drain trap 22 and merging with the vertical pipe portion 18B of the first bypass pipe 18, a vertical pipe portion 52B extending downward from the lower end of the vertical pipe portion 18B, and a lower horizontal pipe portion 52C extending in the lateral direction from the lower end of the vertical pipe portion 52B. The configuration of the

drain pipes

51 and 52 is not limited to this, and may be any configuration as long as water can be drained from the 1 st drain trap 21 and the 2 nd drain trap 22, respectively.

The 1 st bypass pipe 18 is provided with an intake valve 30. The intake valve 30 is a member for allowing air from outside to pass through the 1 st bypass pipe 18 and preventing drain water and air from passing through the 1 st bypass pipe 18 to the outside. The intake valve 30 is provided at the upper end of the extension portion 18C of the vertical pipe portion 18A, for example. When the extension portion 18C is included, it can be said that the 1 st bypass pipe 18 is formed in the shape of a character of mirror image in which the letter h is reversed. When the 1 st bypass pipe 18 is viewed from the opposite side, the 1 st bypass pipe 18 has an h-shape. The suction valve 30 may be provided at the connection portion 18D of the 1 st bypass pipe 18. The extension portion 18C and the intake valve 30 may be provided above the vertical pipe portion 18B.

It is desirable that the uppermost portion 18H of the piping in the 1 st bypass pipe 18 has a height position that is the same as or higher than the height position of the standard head H of the water 20 stored in the bathtub 11. The water head H is referenced to, for example, the bottom of the bathtub 11. The standard water head H is an amount of hot water corresponding to the amount of hot water stored in the bathtub 11 when a person takes a bath, for example, an amount of hot water corresponding to an amount of hot water that does not overflow from the bathtub 11 when a 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 in the 1 st bypass pipe 18, and corresponds to the height of the bottom surface of the connection portion 18D.

As shown in fig. 3, the 1 st siphon drain pipe 31 is connected to the 1 st drain trap 21 and the downstream side of the 1 st bypass pipe 18. Further, the 2 nd siphon drain pipe 32 is connected to the 2 nd drain trap 22 and the downstream side of the 1 st bypass pipe 18.

Specifically, in fig. 4, the 1 st siphon drain 31 is connected to the end of the down pipe portion 51C of the drain pipe 51. The 1 st siphon drain pipe 31 includes a lateral pipe 31A for flowing the drain in the lateral direction and a vertical pipe 31B connected to the vertical drain pipe 14 and for flowing the drain from the lateral pipe 31A downward. The 2 nd siphon drain pipe 32 includes a lateral pipe 32A for flowing the drain water in the lateral direction and a vertical pipe 32B connected to the vertical drain pipe 14 and for flowing the drain water from the lateral pipe 32A in the downward direction. In fig. 3, the 1 st siphon drain 31 and the 2 nd siphon drain 32 are arranged in parallel on the back side of the 2 nd siphon drain 32.

(action)

The present embodiment is configured as described above, and its operation will be described below. In fig. 4, in the drain path 16 of the present embodiment, since the drain from the bathtub 11 is collected and drained after storing water, much drain is discharged at one time as compared with the drain from the shower 12. The drain from the bathtub 11 passes through the upper horizontal pipe portion 51A, the vertical pipe portion 51B, and the lower horizontal pipe portion 51C of the drain pipe 51 via the 1 st drain trap 21, and flows toward the 1 st siphon drain pipe 31 (in the direction of the arrow a). Before the siphon force is generated in the 1 st siphon drain pipe 31, the remaining drain water flows into the 1 st bypass pipe 18 (arrow B direction). The air in the 1 st bypass pipe 18 is pushed out toward the 2 nd drain trap 22 (in the direction of arrow C) with the inflow of drain.

The 1 st bypass pipe 18 is formed in an inverted U shape, and the uppermost portion 18H of the pipe is located above both the 1 st drain trap 21 and the 2 nd drain trap 22, so that the drain water flowing into the 1 st bypass pipe 18 is less likely to flow toward the 2 nd drain trap 22. In particular, when the height position of the uppermost portion 18H of the pipeline in the 1 st bypass pipe 18 is the same as the height position of the standard water head H of the water stored in the bathtub 11, overflow from the vertical pipe portion 18A to the vertical pipe portion 18B is less likely to occur. In addition, overflow may be generated to such an extent that the water seal of the 2 nd drain trap 22 is not broken.

In fig. 5, when siphon force is generated in the 1 st siphon drain pipe 31, the drain from the bathtub 11 and the drain flowing into the 1 st bypass pipe 18 are quickly discharged through the 1 st siphon drain pipe 31 (arrow a direction), and the water level of the bathtub 11 is lowered (arrow D direction). At this time, the self-priming valve 30 introduces the outside air (in the direction of arrow E) into the 1 st bypass pipe 18, and thus, the negative pressure is suppressed from acting on the 2 nd drain trap 22 side. Therefore, the water seal of the 2 nd drain trap 22 is not broken.

Thus, according to the drain passage 16, the accumulated drain from the bathtub 11 can be prevented from overflowing into the shower 12 without using a temporary storage tank as in the conventional case.

On the other hand, in fig. 6, the drain from the shower 12 is continuous drain without water storage. The drain from the shower 12 passes through the 2 nd drain trap 22 from the upper cross pipe portion 52A, the vertical pipe portion 52B, and the lower cross pipe portion 52C of the drain pipe 52, and flows to the 2 nd siphon drain pipe 32 (in the direction of arrow F). The air in the line of the 1 st bypass pipe 18 is pushed out (in the direction of arrow G) toward the 1 st drain trap 21 via the 1 st bypass pipe 18, and therefore, the water is smoothly drained from the shower 12. In the case of continuous drainage, there is almost no water head, and therefore, the drainage does not flow into the longitudinal pipe portion 18B of the 1 st bypass pipe 18. When the siphon force is generated at the 2 nd siphon drain pipe 32, the drain water from the shower 12 is rapidly discharged via the 2 nd siphon drain pipe 32 (arrow a direction). At this time, if the water is discharged only from the shower 12, negative pressure hardly occurs in the 1 st bypass pipe 18, and when negative pressure occurs in the 1 st bypass pipe 18 during simultaneous water discharge with the bathtub 11, the water seal of the 1 st drain trap 21 and the water seal of the 2 nd drain trap 22 are not broken because outside air is introduced into the intake valve 30.

In fig. 1, in the drain structure 10 of the present embodiment, the drain from the bathtub 11 can be made to flow to the drain stand pipe 14 via the lateral pipe 31A and the vertical pipe 31B of the 1 st siphon drain pipe 31. In the drain structure 10, the drain from the shower 12 can be made to flow to the drain stand pipe 14 through the lateral pipe 32A and the vertical pipe 32B included in the 2 nd siphon drain pipe 32.

The drain from the shower 12 is normally continuous drain without stored water, but in some cases, the drain flows (for example, when hot water overflows from the bathtub 11 at once).

Compared to continuous drainage, when much drainage flows into the 2 nd drainage trap 22, if the drainage capacity of the 2 nd siphon drainage pipe 32 does not keep up with the drainage flowing into the 2 nd drainage trap 22 until the 2 nd siphon drainage pipe 32 generates a siphon force, the water level of the drainage flowing into the drainage part 318 rises and the liquid level of the drainage rises to a position above the upper end of the water seal reservoir 310 (the upper end 306A of the inner tube 306) and the upper end of the drainage part 318 (the upper end 314A of the outer tube 314), but the temporary reservoir 322 is provided above the drainage part 318, so that the drainage overflowing from the drainage part 318 can be stored in the temporary reservoir 322, and the drainage overflowing from the drainage part 318 can be prevented from overflowing onto the floor 12A of the shower 12, in other words, the drainage can be prevented from staying on the floor 12A above the opening 340.

It is preferable that the temporary storage section 322 be adjusted in diameter, height, and the like to ensure a volume thereof so that drainage does not accumulate on the floor 12A.

As described above, when a large amount of drain flows into the 2 nd drain trap 22, the water level in the trap may rise and the water level may also rise in the temporary storage 322, but when air is accumulated in the upper portion inside the temporary storage 322, the volume of the drain accumulated in the temporary storage 322 decreases by the volume of the accumulated air. Therefore, in the case where air is accumulated in the upper portion of the interior of the temporary storage section 322, it is preferable to connect a ventilation pipe 96 for exhausting air to the upper portion of the temporary storage section 322 to exhaust the air in the interior of the temporary storage section 322, as shown in fig. 2. Further, an end portion of the breather pipe 96 on the downstream side in the air discharge direction is disposed above the floor panel 12A so that the drain water does not leak from the end portion. The end of the breather pipe 96 on the downstream side in the air discharge direction can be connected to the 1 st bypass pipe 18 (preferably, the extension portion 18C), for example.

When the siphon force is generated in the 2 nd siphon drain pipe 32, the drain water in the drain part 318 is quickly discharged, and therefore, the water level of the drain water is lowered, and finally, all the drain water in the drain part 318 is discharged.

Since the outer flange 324, which is the bottom wall of the temporary storage section 322, is inclined such that the radially inner side is located below the radially outer side, the drain water inside the temporary storage section 322 flows along the inclined outer flange 324 to the drain section 318 as the water level of the drain water decreases, and the drain water does not accumulate inside the temporary storage section 322.

Further, since the temporary storage section 322 is formed in a circular shape in plan view, foreign matter in the drainage is less likely to accumulate and cleaning is easier than a shape having angular corners such as a square. The temporary storage 322 is formed in a circular shape in plan view, but may be formed in a shape other than a circular shape such as an oval shape. Further, the temporary storage section 322 of the present embodiment is formed integrally with the elbow main body 300, but may be a member separate from the elbow main body 300, and the temporary storage section 322 formed as a separate member may be connected to the elbow main body 300 by a pipe.

Further, according to the drainage path 16 and the drainage structure 10 of the present embodiment, a conventional temporary storage tank is not required under the floor, and therefore, the installation location of the bathtub 11 and the like for collecting and draining water can be further reduced in floor.

[ 2 nd embodiment ]

In fig. 7, the drain passage 26 of the present embodiment has

auxiliary chambers

71, 72 in at least one of, for example, a downstream side portion of the 1 st drain trap 21 and a downstream side portion of the 2 nd drain trap 22. The auxiliary chamber 71 is provided at a downstream side portion of the 1 st drain trap 21. The auxiliary chamber 72 is provided at a downstream side portion of the 2 nd 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 smaller than those of conventional temporary storage tanks, and can be set to a size that can be disposed in a space required for disposing the 1 st drain trap 21, the 2 nd drain trap 22, and the

drain pipes

51 and 52. Thus, an extra underfloor space is not required for providing the

auxiliary chambers

71, 72.

In the illustrated example, both the

auxiliary chambers

71 and 72 are disposed upstream of the 1 st bypass pipe 18, but either one of the

auxiliary chambers

71 and 72 or both of the

auxiliary chambers

71 and 72 may be disposed downstream of the 1 st bypass pipe 18.

In the drain path 26, the

auxiliary chambers

71 and 72 can receive the excess drain exceeding the capacity of the 1 st bypass pipe 18. When the shower 12 (fig. 1) uses water drawn up from the bathtub 11 (fig. 1), a larger amount of water than usual is discharged from the shower 12. In this case, the retention of the drain water from the shower 12 can be suppressed by receiving the drain water by the

auxiliary chambers

71, 72. In addition, a larger amount of accumulated drain from the bathtub 11 can be dealt with.

Since the other portions are the same as those in embodiment 1, the same reference numerals are given to the same portions in the drawings, and the description thereof is omitted.

[ embodiment 3 ]

In fig. 8, in the drain path 36 of the present embodiment, a breather pipe 74 is connected to the 1 st bypass pipe 18 in place of the suction valve 30 (fig. 2). The air duct 74 extends, for example, to the outside of a building, and its end 74A is open to the atmosphere.

In this drain path 36, a vent pipe 74 is provided instead of the intake valve 30 (fig. 3), and therefore, an arrangement space for the intake valve 30 is not required.

When the siphon suction force is generated in the 1 st siphon drain pipe 31, the external air is introduced from the vent pipe 74 into the 1 st bypass pipe 18, and therefore, the water seal of the 2 nd drain trap 22 is not broken. When the siphon suction force is generated in the 2 nd siphon drain pipe 32, the outside air is also introduced from the vent pipe 74 into the 1 st bypass pipe 18, and therefore the water seal of the 1 st drain trap 21 is not broken.

[ 4 th embodiment ]

In fig. 9, the drain path 46 of the present embodiment includes

other drain elbows

83 and 84, siphon

drains

93 and 94,

independent air ducts

103 and 104, a header 80, and a merged air duct 90.

The other drain trap 83 is provided to a drain portion (not shown) of a washing machine as an example of another water-using device. The other drain trap 84 is provided to a wash stand as an example of another water-using appliance. The

other drain elbows

83 and 84 are so-called water-sealed elbows 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 elbow 84. Siphon drain 94 is connected to the downstream side of drain 114.

One end of the independent breather pipe 103 is connected to a downstream side portion (the drain pipe 113) of the other drain trap 83. One end of the independent vent pipe 104 is connected to a downstream side portion (a drain pipe 114) of the other drain trap 84. The other ends of the

independent air pipes

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

The manifold 80 is a pipe joint to which the breather pipe 74 and the

independent breather pipes

103 and 104 are connected. The confluent vent 90 is connected to the header 80 and is open to the atmosphere. Specifically, the merged flue pipe 90 extends to the outside of the building, for example, and the end 90A thereof is open to the atmosphere.

In this drainage path 46, the breather pipe 74 and the

independent breather pipes

103 and 104 are provided instead of the intake valve 30 (fig. 3), and therefore, an arrangement space for the intake valve 30 is not required. The vent pipe 74 and the

independent vent pipes

103 and 104 are collected in the header 80 and are opened to the atmosphere through the merged vent pipe 90. Thus, it is not necessary to extend the snorkel 74 and the

separate snorkels

103 and 104, respectively, to the outside of the room. This enables air intake and exhaust to be performed collectively, and the number of components can be reduced as compared with the case where the breather pipe 74 and the

independent breather pipes

103 and 104 are arranged so as to be open to the atmosphere.

[ reference example 1]

In fig. 10, in the drain structure 56 of the present reference example, the 1 st siphon drain pipe 31 is connected to the downstream side of the drain pipe 51 extending from the 1 st drain trap 21. Further, a 2 nd siphon drain pipe 32 is connected to a downstream side of the drain pipe 52 extending from the 2 nd drain trap 22. That is, the drainage path from the 1 st drainage trap 21 and the drainage path from the 2 nd drainage trap 22 are independent of each other.

Therefore, even if the water is collected and drained from the 1 st drain trap 21, the drain does not flow into the 2 nd drain trap 22. Therefore, the accumulated drain from the bathtub 11 can be prevented from overflowing into the shower 12 (fig. 1).

[ reference example 2]

In fig. 11, the drainage structure 66 of the present reference example is provided with suction valves 111 and 112 in addition to reference example 1. A branch pipe 121 extending upward is connected to the drain pipe 51. The suction 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. Further, the suction 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 embodiment 1.

In this reference example, as in reference example 1, even if the water is collected and drained from the 1 st drain trap 21, the drain does not flow into the 2 nd drain trap 22. Therefore, the accumulated drain from the bathtub 11 can be prevented from overflowing into the shower 12 (fig. 1).

Since the suction valve 111 is added to the drain pipe 51, external air is introduced from the suction valve 111 when water is discharged from the 1 st drain trap 21. Since the suction valve 112 is added to the drain pipe 52, external air is introduced from the suction valve 112 when water is discharged from the second drain trap 22. Therefore, the drain from the 1 st drain trap 21 and the drain from the 2 nd drain trap 22 both flow easily.

Since the other portions are the same as those in embodiment 1 or reference example 1, the same reference numerals are given to the same portions in the drawings, and the description thereof is omitted.

[ 5 th embodiment ]

In fig. 12, the drain structure 76 of the present embodiment includes a 2 nd bypass pipe 218. The 2 nd bypass pipe 218 connects the 1 st drain trap 21 side in the 1 st bypass pipe 18 and the 2 nd drain trap 22 side in the 1 st bypass pipe 18 at a position lower than the uppermost portion of the 1 st bypass pipe 18. The bottom surface of the pipe in the 2 nd bypass pipe 218 is disposed lower than the top surface 22A of the 2 nd drain trap 22. The bottom surface of the pipe passage in the 2 nd bypass pipe 218 is disposed higher than the bottom surface 52D of the upper cross pipe portion 52A of the drain pipe 52.

The 2 nd bypass duct 218 extends, for example, in the lateral direction. The 2 nd bypass pipe 218 may be inclined or bent with respect to the horizontal direction. In the case where the height of the bottom surface of the pipe passage in the 2 nd bypass pipe 218 is not constant in this way, the highest position in the bottom surface is disposed lower than the top surface 22A of the 2 nd drain trap 22 and higher than the bottom surface 52D of the upper cross pipe portion 52A.

A 1 st check valve 19 is provided at, for example, a connection portion 18D in the 1 st bypass pipe 18. The 1 st check valve 19 is configured to allow a flow from the 2 nd drain trap 22 side to the 1 st drain trap 21 side, but not to allow a flow from the 1 st drain trap 21 side to the 2 nd drain trap 22 side. The position of the 1 st check valve 19 is not limited to the connecting portion 18D, and may be provided in the vertical pipe portion 18B, for example. The 1 st check valve 19 may be configured to allow a flow from the 1 st drain trap 21 side to the 2 nd drain trap 22 side to some extent.

The 2 nd bypass pipe 218 is provided with a 2 nd check valve 219. The 2 nd check valve 219 is configured to allow a flow from the 2 nd drain trap 22 side to the 1 st drain trap 21 side, but not to allow a flow from the 1 st drain trap 21 side to the 2 nd drain trap 22 side. The 2 nd check valve 219 may be configured to allow a flow from the 1 st drain trap 21 side to the 2 nd drain trap 22 side to some extent.

Even when the drain from the shower 12 does not completely enter the 2 nd drain trap 22 and becomes full, according to the present embodiment, the excess drain passes through the 2 nd bypass pipe 218 from the vertical pipe portion 51B and the lower horizontal pipe 51C of the drain pipe 51 and flows toward the 1 st siphon drain pipe 31 (fig. 1) (in the direction of arrow H). In the present embodiment, the bottom surface of the pipe passage in the 2 nd bypass pipe 218 is disposed higher than the bottom surface 52D of the upper cross pipe portion 52A of the drain pipe 52. Therefore, the drain from the shower 12 does not flow to the 2 nd bypass pipe 218 frequently, and the 2 nd siphon drain pipe 32 can be quickly brought to full flow, and therefore, a siphon start delay is not caused.

In the present embodiment, the bottom surface of the pipe passage in the 2 nd bypass pipe 218 is disposed lower than the top surface 22A of the 2 nd drain trap 22. Therefore, when the drain overflows from the 2 nd drain trap 22, the drain flows to the 2 nd bypass pipe 218, and therefore the drain can be suppressed from overflowing from the 2 nd drain trap 22.

Further, since the 2 nd check valve 219 is provided in the 2 nd bypass pipe 218, the flow from the 1 st drain trap 21 side to the 2 nd drain trap 22 side through the 2 nd bypass pipe 218 is suppressed. Further, since the 1 st check valve 19 is provided in the connecting portion 18D of the 1 st bypass pipe 18, when water is discharged from the bathtub 11, the flow from the 1 st drain trap 21 side to the 2 nd drain trap 22 side via the 1 st bypass pipe 18, that is, the overflow from the vertical pipe portion 18A to the vertical pipe portion 18B is more unlikely to occur.

[ 6 th embodiment ]

In fig. 13, the drain structure 86 of the present embodiment is configured such that the 1 st check valve 19 of the 1 st bypass pipe 18 in embodiment 5 is omitted. In the 1 st bypass pipe 18, as described in embodiment 1, by appropriately setting the height of the uppermost portion 18H, overflow between the

vertical pipe portions

18A, 18B in the 1 st bypass pipe 18 can be prevented. Therefore, by omitting the 1 st check valve 19 as in the present embodiment, the structure can be simplified and the cost can be reduced.

[ other embodiments ]

While the embodiments of the present invention have been described above as examples, it goes without saying that the embodiments of the present invention are not limited to the above-described embodiments, and can be implemented by being variously modified in addition to the above-described embodiments without departing from the scope of the invention.

The bathtub 11 is exemplified as an example of the 1 st water appliance, but the 1 st water appliance may be an appliance that drains water into a collected water such as a washing machine. The shower 12 is exemplified as an example of the 2 nd water appliance, but the 2 nd water appliance may be an appliance which discharges water continuously such as a sink, a kitchen, a dish washer, or the like.

The drain pipe 51 is exemplified as an example of the downstream side portion of the 1 st drain trap 21 to which the 1 st bypass pipe 18 is connected, but the downstream side portion is not limited thereto. Similarly, the drain pipe 52 is exemplified as an example of the downstream portion of the 2 nd drain trap 22 to which the 1 st bypass pipe 18 is connected, but the downstream portion is not limited thereto. For example, the 1 st bypass pipe 18 may be directly connected to at least one of the 1 st drain trap 21 and the 2 nd drain trap 22.

The suction valve 30 is provided in the 1 st bypass pipe 18, but the suction valve 30 may be omitted if the water seal of the 1 st drain trap 21 and the 2 nd drain trap 22 is not broken.

In the above embodiment, the temporary storage section 322 is provided in the 2 nd drain trap 22 integrally with the 2 nd drain trap 22, but the present invention is not limited to this, and the temporary storage section 322 may be provided separately from the 2 nd drain trap 22. The temporary storage section 322 may be provided on the downstream side in the water discharge direction of the water seal storage section 310 and on the upstream side in the water discharge direction of the 2 nd siphon drain pipe 32, and may be provided on the upper cross pipe section 52A, the vertical pipe section 52B, the lower cross pipe section 52C, and the like shown in fig. 4, for example.

When the temporary storage section 322 is provided in the upper horizontal tube portion 52A, the vertical tube portion 52B, and the lower horizontal tube portion 52C, the shape of the temporary storage section 322 is not particularly limited. The volume of the temporary storage section 322 provided in the upper horizontal tube portion 52A, the vertical tube portion 52B, and the lower horizontal tube portion 52C may be set so that the drain water does not overflow onto the floor 12A of the shower 12.

Claims

1. A drainage structure, wherein,

the drainage structure comprises:

a 1 st water tool for discharging water from the 1 st discharge part;

a 2 nd water-using tool which discharges water from the 2 nd discharge part;

a 1 st drain trap pipe provided in a drain portion of the 1 st water treatment appliance;

a 2 nd drain trap pipe provided in a drain portion of the 2 nd water-using appliance;

a 1 st bypass pipe connecting a downstream side portion of the 1 st drain trap to a downstream side portion of the 2 nd drain trap;

a 1 st siphon drain pipe connected to the 1 st drain trap pipe and a downstream side of the 1 st bypass pipe; and

a 2 nd siphon drain pipe connected to the 2 nd drain trap and a downstream side of the 1 st bypass pipe,

the 2 nd drain trap has:

a deodorization cylinder into which drain water from the 2 nd water-using appliance flows;

a water seal storage section formed in a bottomed cylindrical shape having an upper opening, the deodorizing cylinder being inserted at a lower portion thereof, and a part of the inflow drain water being stored as water seal in the water seal storage section;

a discharge unit that discharges the drain water that has passed over the upper end of the water seal storage unit to the 2 nd siphon drain pipe; and

and a temporary storage section provided on a downstream side in a water discharge direction of the water seal storage section and on an upstream side in the water discharge direction of the 2 nd siphon drain pipe, and capable of temporarily storing the drain water.

2. The drainage structure according to claim 1,

the temporary storage section is provided above the discharge section, and temporarily stores the drain water having a water level exceeding the discharge section.

3. The drainage structure according to claim 1 or 2,

the temporary storage portion is formed to be circular in a plan view.

4. The drainage structure according to any one of claims 1 to 3,

at least a part of the line of the 1 st bypass pipe is positioned above both the 1 st drain trap and the 2 nd drain trap.

5. The drainage structure according to any one of claims 1 to 4,

and the 1 st bypass pipe is provided with an air suction valve.

6. The drainage structure according to any one of claims 1 to 5,

the drain structure includes a 2 nd bypass pipe which connects the 1 st drain bend side of the 1 st bypass pipe to the 2 nd drain bend side of the 1 st bypass pipe at a position lower than the uppermost portion of the 1 st bypass pipe, and a bottom surface of a pipe passage of the 2 nd bypass pipe is disposed lower than a top surface of the 2 nd drain bend.