JPH10237917A - Drain trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce difference in height between a drain trap and a sewer and, at the same time, to properly set a diameter on a drainage side of the drain trap to make it possible to control the generation of sounds in the case of draining. SOLUTION: A drain slope of a discharging pipe 16 is so set that the height of the center O of an opening 16a in the front end of the discharging pipe 16 connected to a outflow pipe 13 of a drain trap 1 is the same as that of the center O1 of an opening 16 in a discharging pipe 15 connected to a trap main body 2 or higher than that. Effective sectional area S of the discharging pipe 16 is used for sectional area of part lower than an upper limited horizontal line L obtaining effective sectional area S1 of the discharging pipe 15 in the opening 16a of the front end thereof, and diameters of the outflow pipe 13 and discharging pipe 16 are so set that the effective sectional area S is larger than the sum of effective sectional area S, S1 . of every discharging pipes 15, 15..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plurality of inflow pipes to which inflow pipes can be connected, and a single outflow pipe to which an outflow pipe can be connected, on the side of a trap body having an odor control mechanism. With respect to the drain traps protruding respectively.

[0002]

2. Description of the Related Art FIG. 3 shows a drain trap 20 disposed in a bathroom.
Is shown. The trap body 21 is installed in a washing place with a dish at the upper opening, and the inflow pipe 22 on the side thereof is provided with a bathtub 27.
The outlet pipe 24 is connected to a drain port of a toilet or a lavatory via an inflow pipe 23, and the outflow pipe 24 is connected to a sewage pipe 26 via an outflow pipe 25. The outflow pipe 25 is
Since it is for discharging the water collected in the trap body 21, a size having a larger diameter than the inflow pipe 23 (generally 50A, the inflow pipe is 30A) is used. Furthermore, the sewage pipe 26
The outlet pipe 2 is provided at a position lower than the trap body 21.
4 and the outflow pipe 25 are provided with a drainage gradient.
The outflow pipe 25 has a maximum length of 3 m.

[0003]

In the current drain trap, the above-mentioned 50 outlet traps are provided regardless of the number of the inlet pipes 22.
The form in which the outflow pipe 25 of A is connected is generalized, and the outflow side corresponding to the inflow side is not properly set. When only one inflow pipe 22 is provided in the drain trap 20, water is drained relatively smoothly due to a large difference in flow rate between the inflow side and the outflow side, but two or three inflow pipes 22 are provided. With a plurality of tubes, the difference in flow rate between the inflow side and the outflow side becomes small. Therefore, the flow velocity is increased, and the air entrained at the time of drainage flows as bubbles as it is, thereby generating noise. On the other hand, in apartment houses such as condominiums and apartments, it is desirable that the drain trap 20 and the sewage pipe 26 be provided as close to the floor as possible because narrowing the space under the floor leads to simplification of construction and cost saving. In the bathroom, the lower edge of the bathtub 27 is easier to enter. Therefore, it is preferable to set the bathtub 27 to a lower position to some extent. However, in this case, since the position of the inflow pipe 22 connected to the bathtub 27 is also lowered, it is naturally necessary to lower the positions of the drain trap 20 and the sewage pipe 26, which contradicts the purpose of narrowing the underfloor. become.

[0004] Therefore, the present invention is to reduce the generation of noise by reducing the gradient for drainage to reduce the height difference from the sewage pipe, and by appropriately setting the diameter of the outflow pipe and the outflow pipe. It is intended to provide a drain trap that can be used.

[0005]

In order to achieve the above object, according to the present invention, the height of the center of the opening of the tip of the outflow pipe connected to the outflow pipe is adjusted to the trap body. The drainage gradient is set so as to be equal to or higher than the height of the center of the opening of the connected inflow pipe, while the effective cross-sectional area of the outflow pipe is adjusted to the opening at the tip of the outflow pipe. In the above, the cross-sectional area of the portion below the upper limit horizontal line of the connecting portion of the inflow pipe and the trap body, the effective cross-sectional area of the outflow pipe,
In order to have a relationship that is equal to or greater than the sum of the effective sectional areas of the connection portions with the trap body in each of the inflow pipes,
The diameter of the outflow pipe and the outflow pipe is set.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory cross-sectional view of a drain trap 1, FIG. 2 is an explanatory plan view, and a trap body 2 includes a central portion 3.
Has a two-step bottom shape that is deeper than the outer peripheral portion 4 and has a central portion 3
A deodorizing wall 5 is provided between the outer peripheral portion 4 and the outer peripheral portion 4. On the other hand, an annular body 6 having an internal thread formed on the inner periphery is fitted into the upper opening of the trap body 2, and a cylindrical receptacle having an external thread formed on the outer periphery of the female thread of the annular body 6. 7 is screwed. In the opening 8 at the center of the receiving port 7, the upper edge of the deodorizing cylinder 9, which is tapered downward in the center and the tip of the cylinder 10 is projected into the interior of the deodorizing wall 5, is mounted.
The water sealing portion 11 is formed in the inside of the housing. Furthermore, trap body 2
, Three inflow pipes 12, 12,... Communicating with the central part 3 and having the same height, and an outflow pipe 13 communicating with the outer peripheral part 4 are protruded respectively. Reference numeral 14 denotes a perforated plate screwed to the upper surface of the receptacle 7. The inflow pipes 12, 12,.
An inflow pipe 15 is connected to each, and an outflow pipe 16 is connected to the outflow pipe 13. Since the outflow pipe 16 is connected to a sewage pipe located below the drain trap 1 as shown in FIG. 3, a drainage gradient is provided together with the outflow pipe 13.

Next, the setting of the diameters of the outflow pipe 13 and the outflow pipe 16 and the gradient for drainage will be described. First, the drainage gradient of the outflow pipe 16 is set at the center of the opening 16a at the tip end in a state where the pipe is connected to the outflow pipe 13 (here, the opening position of each pipe is shown by a two-dot chain line for the sake of explanation. height O is, the central portion 3 and the height and equal to the center O ₁ of the opening 15a of the inlet pipe 15 connected, or set it from the higher way. By setting the drainage gradient in this way, the trap body 2 and the outflow pipe 16
It is possible to make the height difference from the sewage pipe connected to the tip of the pipe as small as possible, and to reduce the protrusion of the pipe downward from the trap body 2. In this case, the outflow pipe 16 has a length of 3 m, and the center O of the tip thereof is located at the inflow pipe 15.
The drainage gradient of 1/100 is given so as to be slightly higher than the center O ₁ of the drain.

On the other hand, as shown in FIG. 1, the connecting portion between each inflow pipe 12 and the central portion 3 has a bottom 4a of the outer peripheral portion 4 projecting from the upper side to narrow the opening to the central portion 3, and each of the inflow pipes It flows into the central portion 3 with an effective cross-sectional area S ₁ (shown by a two-dot chain line) in the 15 openings 15a. Therefore, the upper limit horizontal line L of the effective sectional area S ₁ of the inflow pipe 15
Is used in the outflow pipe 16. That is, the opening 16a at the tip of the outflow pipe 16 to which the drainage gradient is provided.
The area of the lower part of the upper limit horizontal line L in the above is defined as the effective sectional area S of the outflow pipe (indicated by the dashed line). The effective cross-sectional area S was obtained by using the upper limit horizontal line L as a guide, because a portion where air remained in the outflow pipe 16 was secured, and a large drainage area that compensated for a decrease in the drainage function due to the reduced drainage gradient was obtained. This is for obtaining an area. Then, as the effective cross-sectional area S satisfies the respective effective total cross-sectional area S ₁ or more _{(S 1 + S 1 + S} 1 ≦ S) and the relationship of the three inflow pipes 15 of the outflow pipe 16 for the inflow side Set the diameter of The inflow pipe 15 is a general 3
Since the size of the outlet pipe 16 is larger than that of the conventional pipe 50A, it is possible to select various sizes of the outlet pipe 16 based on the above setting.
The size of A is selected, and the size of the outflow pipe 13 is set to be connectable.

In the drain trap 1 configured as described above, the drain water from the bathtub or the lavatory flows into the central portion 3 of the trap body 2 via the inflow pipe 15 and the inflow pipe 12 which are respectively connected. Similarly, the drainage that has flowed from the side of the dish plate 14 at the washing place or the like also flows from the deodorizing cylinder 9 into the water sealing section 11. When the amount of water flowing into the central portion 3 increases and the water level exceeds the deodorizing wall 5, the water overflows to the outer peripheral portion 4, flows therefrom, flows into the outflow pipe 16 through the outflow pipe 13, and flows into the external sewage pipe. Will be drained to In particular, here, the effective cross-sectional area on the outflow side is determined using the upper limit horizontal line L as a guide, and the outflow pipe 13 is determined based on the relationship of the above equation.
Since the diameters of the outflow pipe 16 and the outflow pipe 16 are set, the outflow side corresponding to the inflow side can be largely and appropriately set while securing a portion where air remains. Therefore, when the flow rate is constant, the flow velocity decreases, and even if air is trapped in the trap body 2, the bubbles disappear in the outflow pipe 16, so that it is possible to preferably prevent the generation of noise when drainage flows. become. By setting the outflow side in this way, a large diameter on the outflow pipe 16 side is secured, so that the drainage function is not affected even if the drainage gradient is reduced as described above. In particular, here, by setting the center position, the tip of the outflow pipe 16 has almost the same height as the trap body 2, and the height difference between the drain trap and the sewage pipe is smaller, and the space under the floor is further narrowed. be able to. Conversely, if the sewage pipes are at the same position or if the height is suppressed, the position of the drain trap can be lowered accordingly, and the bathtub can be lowered.

In the above-described embodiment, the cross-sectional area on the outflow side is set when the outflow pipe 16 having a length of 3 m is connected. However, this is set when the length is made shorter, such as 1 m or 2 m. No problem. In this case, the position of the opening 16a at the tip of the outflow pipe 16 rises as the drainage gradient becomes shorter with the same drainage gradient, and the effective sectional area S divided by the upper limit horizontal line L
Gradually decreases, so that the opening area required on the outflow side gradually increases. Accordingly, the drainage gradient is set to 1/100 of the normal half in the above embodiment, but is not limited to this value, and is set to be larger than 1/100 according to the length and diameter of the set outflow pipe 16. Can be set to Further, in the above embodiment, the trap body is provided with three inflow pipes, but two or more other pipes are similarly set so that the inflow side and the outflow side satisfy the above equation. If the heights of the plurality of inflow pipes are different, the center of the opening may be set and the drainage gradient may be selected in accordance with the lowest inflow pipe.

[0011]

As described above, according to the present invention, the gradient for drainage can be made as small as possible, the height difference between the drainage trap and the sewage pipe can be made smaller, and the space under the floor can be made narrower. Conversely, when the sewage pipes are at the same position or when the height of the sewage pipe is reduced, the position of the drain trap can be lowered accordingly, and the bathtub can be easily lowered. Also, using the upper limit horizontal line as a guide to obtain the effective cross-sectional area on the outflow side,
Since the diameters of the outflow pipe and the outflow pipe are set based on the effective cross-sectional area, the outflow side corresponding to the inflow side can be appropriately set, and a large diameter of the outflow pipe can be secured.
Therefore, even if the gradient for drainage is reduced as described above, the drainage function is not affected. Conversely, when the flow rate is constant, the flow velocity decreases, and there is no air bubbles due to the entrainment of air, so that the sound generated when the drainage flows. The effect that generation | occurrence | production of can be suitably prevented is acquired.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a drain trap.

FIG. 2 is an explanatory plan view of a drain trap.

FIG. 3 is an explanatory view showing an installation mode of a drain trap in a bathroom.

[Description of Signs] 1. drain trap, 2. trap body, 3. central part, 4. outer peripheral part, 5. deodorizing wall, 9, deodorizing cylinder, 11
..Sealing section, 12..inflow pipe, 13..outflow pipe, 15.
-Inflow pipe, 16-Outflow pipe.

Claims (1)

[Claims] 1. A plurality of inflow pipes to which an inflow pipe can be connected and a single outflow pipe to which an outflow pipe can be connected, respectively, protrudingly provided on a side of a trap body provided with a deodorizing mechanism,
A drain trap, wherein the drain pipe is provided with a drain gradient for directing the drain pipe downward, wherein the height of the center of the opening of the tip of the drain pipe connected to the drain pipe is connected to the trap body. The drainage gradient is set so as to be equal to or higher than the height of the center of the opening of the inflow pipe, while the effective sectional area of the outflow pipe is set at the opening at the tip of the outflow pipe. The cross-sectional area of a portion below the upper limit horizontal line of the connection portion between the inflow pipe and the trap body is set to be an effective cross-sectional area of the outflow pipe, and the effective cross-section of the connection portion between each inflow pipe and the trap body is determined. A drain trap, wherein the diameters of the outflow pipe and the outflow pipe are set so as to have a relationship of not less than the sum of the areas.