JP5429688B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet, and more particularly, to a siphon flush flush toilet that supplies flush water to the toilet, cleans the toilet, and discharges filth.

  In recent years, toilets with a capacity of 6 liters or less are often used due to the saving of toilet flushing water, and 4.8 liters of toilets are beginning to be used overseas such as China and the United States. However, a reduction in the amount of washing water is not preferable because it naturally becomes a severe condition with respect to the discharge of filth.

  In order to satisfy such a demand for water saving, for example, in Patent Document 1, the lower side of the cross section of the ascending pipe of the toilet bowl is formed into a semicircular shape and the upper side is formed into a rectangular shape. There has been proposed a flush toilet that prevents the generation of a swirling flow caused by swirling in a road so that filth can be smoothly fed to a descending path.

JP 2001-26971 A

The present inventors have conducted various test studies to develop a flush toilet that satisfies the demand for water saving and can effectively discharge filth, and found the following phenomenon.
That is, in a siphon flush toilet having a jet outlet that is effective for discharging filth, even if a relatively large amount of washing water is discharged from the jet outlet to increase the siphon action, Wash water discharged from the water outlet collides with the inner wall of the riser pipe of the drain trap pipe, so that a part of the wash water returns to the downstream side with relatively light filth, and the siphon action occurs before the rise pipe is exceeded. It ends, and the malfunction which remains as floating dirt in a bowl part arises. In particular, the amount of accumulated water in the bowl portion is reduced by the siphon action, so that part of the washed water that has collided returns to the downstream side, so that the floating filth tends to remain. Further, when the amount of washing water is small, the amount of washing water pushed in after the siphon action is reduced, so that more floating filth tends to remain.

  If the wash water discharged from the jet discharge port collides with the inner wall of the rising pipe of the drain trap pipe and prevents a part of the wash water from returning to the downstream side, the amount of the wash water is small. They found out that it was possible to reliably discharge floating filth.

  Then, this invention is made | formed in order to solve the conventional problem, and it aims at providing the flush toilet which can discharge | emit floating-type filth reliably even if there is little quantity of washing water. .

In order to achieve the above object, the present invention is a water- saving siphon type flush toilet that supplies flush water to a toilet bowl, washes the toilet bowl and discharges waste with a small amount of flush water, and has a dirt receiving surface. A bowl part provided, a drain trap pipe for discharging dirt disposed so as to connect the lower part of the bowl part and the inlet, and a drain trap pipe provided at a position facing the inlet of the drain trap pipe. A drain spout line that includes a rising pipe line that forms an inlet and a down pipe line that is connected to the rising pipe line. A part of the inner wall surface facing the jet outlet is formed by a substantially flat flat surface, and the rising pipe and the flat surface are each formed so that an angle with respect to the horizontal surface is within a range of 40 degrees to 60 degrees, The flat surface is from the jet outlet It is formed as a region equal to or larger than the area where the wash water discharged collides, and continuously with other circular cross-sections in the circumferential direction of the ascending pipeline, and is discharged from the jet outlet and flows into the ascending pipeline It is characterized in that the cleaning water is configured so as not to return to the upstream side even if the amount of the cleaning water is a predetermined small amount .
In the flush toilet of the present invention configured as described above, the wash water is discharged from the jet outlet to the inlet of the rising pipe of the drain trap pipe, and the inner wall surface facing the jet outlet of the rising pipe Collide with the part. In flush toilets, the greater the angle of the drain trap pipe with respect to the horizontal plane of the rising pipe, the shorter the overall length of the toilet bowl. On the other hand, the wash water discharged from the jet outlet is the rising pipe. The amount of washing water returning to the downstream side after colliding with the water increases. Since the portion of the inner wall surface with which the washing water collides is formed by a substantially flat surface, even if the angle with respect to the horizontal plane of the rising pipe of the drain trap pipe is within the range of 40 to 60 degrees, the jet discharge After washing water discharged from the water outlet collides with the inner wall surface portion facing the jet outlet of the ascending pipeline , the washing water does not return to the upstream side (backflow), but downstream along the flat surface. flow smoothly (upper side), and further, run up riser channel with stagnation accumulated water around the riser passage. In this way, since the wash water and stagnation water discharged from the jet outlet can be smoothly guided to the descending pipe side, the drain trap pipe can be filled quickly and the siphon can be activated. As a result, according to the present invention, even if the amount of washing water is small, floating filth can be reliably discharged , and the overall length of the toilet can be shortened.

In the present invention, preferably, the jet outlet is arranged to be positioned below a portion of the inner wall surface formed by a substantially flat surface facing the jet outlet of the ascending pipeline.
In the flush toilet of the present invention configured as described above, the wash water discharged from the jet outlet is from the bottom to the inner wall portion formed by the flat surface facing the jet outlet of the ascending pipeline. Since it collides upward, it can flow more smoothly toward the downstream side (upper side) of the ascending pipeline, and as a result, even if the amount of washing water is small, floating filth can be reliably discharged.

  According to the flush toilet of the present invention, floating filth can be reliably discharged even if the amount of washing water is small.

It is side surface sectional drawing which shows the flush toilet bowl by 1st Embodiment of this invention. It is sectional drawing seen along the II-II line of FIG. It is side surface sectional drawing which shows the flush toilet bowl by 2nd Embodiment of this invention.

Hereinafter, a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, referring to FIGS. 1 and 2, a flush toilet according to a first embodiment of the present invention will be described. FIG. 1 is a side sectional view showing a flush toilet according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG.

  As shown in FIG. 1, the flush toilet 1 according to the first embodiment of the present invention is a siphon flush toilet that discharges filth using a siphon action. The flush toilet 1 includes a toilet body 2. A water storage tank 4 having a wash water amount of 6.0 liters is mounted on the rear upper part of the toilet body 2, and the wash water is supplied to the toilet body 2 by the water storage tank 4. It comes to be supplied.

  The toilet body 2 includes a rim portion 6 formed on the upper end side, a bowl portion 10 having a filth receiving surface 8 formed below the rim portion 6, and a filth extending from the bottom of the bowl portion 10 to the outside. A drain trap pipe 12 for discharging, a rim water discharge port 14 for performing rim water discharge, and a jet water discharge port 16 for performing zet water discharge are formed. Here, the jet outlet 16 is disposed at a position facing an inlet 18 of a drain trap pipe 12 to be described later, and discharges water in a substantially horizontal direction.

The drain trap line 12 includes a rising line 22 that forms an inlet 18 and a descending line 24 connected to the rising line 22, and the connection between the rising line 22 and the descending line 14 is at the top. 26. Further, a drain socket 26 is connected to the downstream end side of the descending conduit 24.
Here, the angle θ of the drain trap pipe 18 with respect to the horizontal plane of the rising pipe 22 is set to be within a range of 40 degrees to 60 degrees. The angle θ is more preferably in the range of 45 degrees to 55 degrees.

  As shown in FIG. 2, a flat surface 28 is formed on the inner wall surface of the drain trap pipe 12 that faces the jet outlet 16 of the rising pipe 22. The flat surface 28 is formed as a region that is substantially equal to or slightly larger than the area where the cleaning water discharged from the jet water discharge port 16 collides. Specifically, the width W of the flat surface 28 of the ascending pipeline 22 is substantially equal to or slightly wider than the width of the cleaning water discharged from the jet water discharge port 16 and colliding with the flat surface. The length L in the direction of the ascending pipe line 22 may be approximately equal to or longer than the length of the cleaning water discharged from the jet water discharge port 16 and colliding with the flat surface. In the present embodiment, the flat surface 28 may be formed in the entire region along the length direction of the ascending pipeline 22.

Here, the flat surface 28 is not limited to a flat surface, but may be a substantially flat surface, that is, a surface having a large radius of curvature (a small curvature).
The flat surface 28 of the ascending pipeline 22 is continuously connected to the other circular section of the ascending pipeline 22 in the circumferential direction, and is also continuously connected to the upstream circular section of the ascending pipeline 22. It is connected to the.

  Next, the operation (action) of the flush toilet according to the first embodiment of the present invention will be described. First, when cleaning the toilet bowl, the wash water in the water storage tank 4 is discharged from the rim spout 14 and turns while washing the filth receiving surface 8 to reach the bottom of the bowl portion 10 and becomes retained water. At the same time, part of the wash water from the water storage tank 4 is discharged from the jet water discharge port 16.

  At this time, the wash water discharged from the jet outlet 16 is discharged toward the inlet 18 of the rising pipe 20 of the drain trap pipe 12 and the portion of the inner wall surface facing the jet outlet 16 of the rising pipe 20. It collides with the flat surface 28 formed in the above. The washing water that has collided with the flat surface 28 is formed in the direction in which the flat surface 28 rises, so that it does not return to the upstream side (backflow), and smoothly flows downstream (upward) along the flat surface 28. Furthermore, it runs up in the ascending pipeline 20 together with the surrounding water in the ascending pipeline 20. In this manner, the wash water discharged from the jet outlet 16 and the stagnation water are smoothly guided to the descending pipeline 22 side. As a result, the drain trap pipe 12 can be quickly filled with water and the siphon can be activated. As a result, according to the flush toilet 1 of the present embodiment, even if the amount of washing water is small, floating filth It can be discharged reliably.

  Next, in the flush toilet 1, the greater the angle of the drain trap pipe 12 with respect to the horizontal plane of the ascending pipe line 20, the shorter the overall length of the toilet bowl, but on the other hand, water is discharged from the jet outlet 16. The amount of wash water that returns to the downstream side after the washed water collides with the ascending pipeline 20 increases. Therefore, in the present embodiment, as described above, the portion of the inner wall surface that faces the jet outlet 16 of the ascending pipeline 20 is formed as the flat surface 28, and therefore the ascending pipeline 20 of the drain trap conduit 12. Even if the angle with respect to the horizontal plane is in the range of 40 degrees to 60 degrees (more preferably, 45 degrees to 55 degrees), the wash water discharged from the jet outlet 16 faces the jet outlet 16 of the ascending pipeline 20 Since it can flow smoothly toward the downstream side (upper side) of the ascending pipe line 20 after colliding with the flat surface 28 of the inner wall surface, floating filth is surely discharged even with a small amount of washing water. And the overall length of the toilet bowl can be shortened.

  Next, a flush toilet according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a side sectional view showing a flush toilet according to a second embodiment of the present invention. Since the basic structure of the flush toilet according to the second embodiment is the same as that of the first embodiment described above, only the parts of the second embodiment different from the first embodiment will be described here.

  As shown in FIG. 3, the flush outlet 32 of the flush toilet 30 according to the second embodiment is positioned below the flat surface 28 formed on the inner wall surface portion facing the jet drain 32 of the ascending pipeline 20. Are arranged to be. Further, the jet water discharge port 32 is formed to discharge water obliquely upward toward the flat surface 28 of the inner wall surface of the ascending pipeline 20.

  In the flush toilet 30 according to the second embodiment, the wash water discharged from the jet outlet 32 is against the flat surface 28 formed on the inner wall portion of the ascending pipeline 20 facing the jet outlet. Since it collides from the bottom to the top, it can flow more smoothly toward the downstream side (upper side) of the ascending pipeline 20, and as a result, even if the amount of washing water is small, floating filth can be discharged reliably. it can.

  In the embodiment described above, an example of a siphon type flush toilet provided with a water storage tank has been described. However, the present invention can be applied to other flush toilets. For example, the present invention can also be applied to a siphon type flush toilet which performs jet discharge by supplying cleaning water from a tank built in the toilet body to a jet outlet.

DESCRIPTION OF SYMBOLS 1,30 Flush toilet 2 Toilet body 4 Water storage tank 8 Soil receiving surface 10 Bowl part 12 Drain trap line 14 Rim spout 16, 32 Zet spout 18 Inlet 20 Ascending line 22 Down line 28 Flat surface

Claims (2)

A water- saving siphon-type flush toilet that supplies flush water to the toilet and cleans the toilet and discharges filth with a small amount of wash water ,
A bowl with a filth receiving surface;
A drain trap pipe for discharging the filth provided so that the lower part of this bowl part and its inlet are connected,
A jet outlet that is provided at a position facing the inlet of the drain trap pipe and discharges wash water toward the inlet of the drain trap pipe;
The drain trap pipe includes a rising pipe forming the inlet and a down pipe connected to the rising pipe, and a part of the inner wall surface of the rising pipe facing the jet outlet is substantially It is formed by a flat flat surface, and the ascending pipeline and the flat surface are each formed so that an angle with respect to a horizontal plane is in a range of 40 degrees to 60 degrees, and the flat surface is cleaned from the jet outlet. It is formed as a region equal to or larger than the area where the water collides and continuously with the other circular cross section in the circumferential direction of the ascending pipeline, and is discharged from the jet outlet and flows into the ascending pipeline A flush toilet characterized in that the flush water is configured not to return to the upstream side even if the flush water has a predetermined small quantity of flush water.   2. The flushing size according to claim 1, wherein the jet outlet is arranged to be positioned below a portion of an inner wall surface formed by a substantially flat surface facing the jet outlet of the rising pipe. Toilet bowl.

Images