JPH07310352A - Swirling flow type water closet bowl - Google Patents

Abstract

PURPOSE:To reduce the quantity of wash water consumed by improving the discharge performance of filth in a swirling flow type water closet bowl. CONSTITUTION:A lower end is placed at a section lower than a water reserving surface 32A and an upper end at a section upper than the water reserving surface 32A, and the angle of rise of a peripheral wall surface is formed at an acute angle extending over the whole circumference in an upper side section continued from the inlet of a trap 26 in the lower section of a stool bowl 12. The upper side section continued from the inlet of the trap 26 is constituted as the swirling-flow forming instrument section 30 of reserved water 32. The bottom section 36 of the swirling-flow forming instrument section 30 is projected toward the central side of the inlet 34 of the trap 26 extending over the whole circumference and continued from the opening of the inlet 34 while the internal surface of the bowl except at least a rear wall surface is formed in a gentle inclined section 40 in an upper side section continued from the swirling-flow forming instrument section 30 of the stool bowl 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet bowl, and more particularly to a swirl-type flush toilet bowl in which a swirl flow is generated to wash the toilet bowl.

[0002]

2. Description of the Related Art Generally, a flush toilet has a rim water passage along the upper peripheral edge of a toilet bowl, and guides the wash water to the rim water passage, and also the lower surface of the rim water passage. Cleaning water is sprayed toward the inside of the toilet bowl through a plurality of water spray holes formed along the edge of the toilet bowl to clean the inside of the toilet bowl.

As this kind of flush toilet, a flush-type toilet bowl is often used in which the toilet bowl is washed only with the water force of the flush water to wash away the filth. In the case of this flush-type flush toilet bowl, the sump surface is In addition to the problem that filth is likely to adhere to the outer peripheral portion of the pool surface and that a large cleaning noise is generated due to air entrapment during cleaning and the collision noise of cleaning water.

On the other hand, there is also used a swirling-type flush toilet bowl in which the flow of water is swirled inside the toilet bowl and the swirling flow is used to wash the toilet bowl.

However, in the case of the conventional swirl-type flush toilet of this kind, there is a problem that the drainage performance is not sufficient and the waste is not easily discharged, and therefore a large amount of wash water is consumed to completely discharge the waste. There was a problem.

[0006]

The invention of the present application has been made to solve such a problem. Thus, the invention of the present application is a swirling flow type flush toilet bowl of a type in which wash water injected into the toilet bowl is swirled in the toilet bowl to wash the toilet bowl.
The lower part of the toilet bowl, which follows the entrance of the trap, has the lower end located below the reservoir surface and the upper end above the reservoir surface, and the rising angle of the peripheral wall forms a steep angle over the entire circumference. , As a swirling flow generator part of the accumulated water,
The bottom part of the swirl flow generator part is projected toward the center side of the inlet of the trap over the entire circumference to be continuous with the inlet opening, while the upper part of the toilet bowl continuing to the swirl flow generator part Is formed as a gentle gentle slope at least on the inner surface of the pot excluding the rear wall surface (claim 1).

Another invention of the present application is the flush toilet bowl according to claim 1, characterized in that the center of the inlet of the trap and the center of the swirling flow generator portion are substantially aligned with each other (claim 2).

According to still another aspect of the present invention, in the flush toilet bowl according to claim 1 or 2, the bottom of the swirl flow generator portion on the rear wall surface side is 20 to 4 from the trap inlet on the rear wall surface.
It is characterized by protruding 30 to 60 mm toward the entrance side of the trap with respect to a height of 0 mm (claim 3).

A still further invention of the present application is the flush toilet bowl according to claim 1, 2 or 3, wherein the flush toilet bowl is a P trap flush type flush toilet bowl (claim 4).

[0010]

As described above, according to the invention of claim 1, in the swirling flow type flush toilet, the lower part of the toilet bowl and the portion above the entrance of the trap is constituted as the swirling flow generator part. . The swirling flow generator portion is a so-called bottomed container-like portion having a bottom portion having a steep rising angle of the peripheral wall and projecting toward the center side toward the entrance side of the trap, and the bottom portion thereof. Acts as a saucer, so that the swirling flow of the accumulated water is generated with a strong force inside the swirling flow generator during the toilet cleaning.

That is, a strong vortex is generated by the accumulated water in the upper part of the trap, and the waste is effectively discharged due to the action of the vortex of the accumulated water. As described above, in the flush toilet of the present invention, the drainage performance is high, and thus the amount of flush water required to drain the drainage is small.
Can save water.

In the flush toilet of the present invention, the height of the water collecting surface is set in the middle of the swirling flow generator section (the height of the water collecting surface is determined by the shape of the trap). In other words, the boundary between the upper end of the swirl flow generator and the gentle slope of the toilet bowl above it is stepped, and the swirling flow of the accumulated water generated in the swirl flow generator is It is restrained that it spreads over the wide range of the gentle slope beyond the attachment.

When the swirling flow spreads excessively,
A phenomenon occurs in which the converging action of the swirling flow that tends to gather in the center is reduced, but this is prevented in the present invention,
This also contributes to enhancing the discharge performance by strengthening the swirling flow at the trap inlet portion of the toilet bowl.

According to the second aspect of the present invention, the center of the trap inlet and the center of the swirl flow generator section are substantially aligned with each other. According to the present invention, the swirl flow of the accumulated water in the swirl flow generator section, that is, the vortex flow. There is an advantage that the pulling force due to can effectively act as the pulling force of the dirt into the trap.

In the invention of claims 1 and 2, the amount of protrusion of the bottom portion on the rear wall surface side in the swirl flow generator portion is 20 to 40 mm from the trap inlet to the rear wall surface at a height of 20 to 40 mm. It is desirable to make the following (claim 3).

According to a fourth aspect of the present invention, the above-mentioned invention is applied to a P-trap type flush toilet bowl. In the case of a conventional P-trap type flush toilet bowl, that is, a flush toilet bowl in which the trap outlet (drainage port) is oriented horizontally and the entire trap is substantially P-shaped, the position of the drainage port in the trap is high. Although it has the advantage of being simple and has a simple toilet structure, it has the drawback of not being able to widen the reservoir surface.

On the other hand, in the case of a siphon-type flush toilet, since the waste water is discharged by utilizing the suction force in the trap drainage channel without depending on the head of the stored water, the trapped water drainage port can be wide Position cannot be raised (the height of the drain port in the case of the conventional siphon flush toilet is 100 to 150).
mm, on the other hand, the height of the drain is 170 in the case of a flush toilet
mm) and the structure is complicated.

On the other hand, according to the invention of claim 4, the position of the drainage port (outlet) in the trap drainage channel is kept high, and therefore the structure of the toilet bowl is simply retained, while the conventional P trap type flush toilet bowl is used. Compared with, the water surface can be expanded to some extent.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1 and FIG. 2, 10 is a P-trap type and wash-down type western style flush toilet (however, the toilet seat and the toilet lid are not shown in the figure), and the toilet bowl 12 is provided on the upper part. It also has legs 14 at the bottom.

A rim 16 is formed on the upper end portion of the toilet bowl 12 so as to project along substantially the entire periphery thereof.
A rim water passage 18 is formed inside the. A plurality of water spray holes 20 having a small diameter are formed along the lower surface of the rim water passage 18, and the wash water introduced into the rim water passage 18 is injected into the toilet bowl 12 through the plurality of water spray holes 20. It is supposed to be done.

As shown in FIG. 2, the rear portion of the rim water passage 18 is divided into left and right portions at a portion near the center line Q in the front-rear direction passing through the center O of the toilet bowl 12, and the upper side in the figure. The end of the water passage 18B (on the left for convenience) has a closed structure.

On the other hand, at the rear end of the rim water passage 18A on the lower side (for convenience, right side) in the drawing, a supply port 21 for supplying cleaning water is provided in a communicating state, and through this supply port 21. The washing water is introduced into the rim water passage 18 and can flow counterclockwise in the rim water passage 18 in the figure. That is, in this example, the flow of water in the rim water passage 18 is one-way.

In this example, in the water passage 18A on the right side of the centerline Q in the front-rear direction, the water spray holes 20 are formed in the front and rear parts of the waterway 18A passing through the center O in the left-right direction.
A second water spray hole 22 and a third water spray hole 24, each of which has a larger opening and is elongated in the direction in which the rim water passage 18 extends, are arranged and formed.

In this example, the second water spray holes 22 are formed in a size such that the ratio thereof is 1: 3 with respect to the water spray holes 20.
The third water spray holes 24 are formed in such a size that the ratio thereof is 1: 4 with respect to the second water spray holes 22.
It is desirable that the number of the second water spray holes 22 is at least twice as large as that of the water spray holes 20, and that the third water spray hole 24 is the second water spray hole 2.
It is desirable that the number is twice or more than 2.

The third water spray hole 24 also has a reservoir surface 3 which will be described later.
It is arranged at a position rearward of the center line S in the left-right direction passing through the center P'of 2A (the position of the center of the third water spray hole 24).

In FIG. 1, reference numeral 26 is a trap, and this trap 26 is a P trap in which a trap outlet (drainage port) 28 is oriented laterally and the overall shape of the trap 26 is substantially P-shaped. Reference numeral 23 is a mounting hole for mounting the toilet seat.

This trap 26 at the bottom of the toilet bowl 12
The upper portion subsequent to is a swirling flow generator portion 30 of the stored water 32 in which the rising angle of the peripheral wall surface forms a steep angle over the entire circumference.

A reservoir surface 32A is located at an intermediate height position of the swirl flow generator section 30. The accumulated water surface 32A is determined by the lower end position of the drainage port 28 in the trap 26. Therefore, specifically, in this example, the accumulated water surface 32A is located at the intermediate height of the swirl flow generator portion 30. The position of the drainage port 28 is defined.

The swirl flow generator portion 30 has a bottom portion 36 projecting toward the center toward the trap inlet 34 over the entire circumference, and the bottom portion 36 is continuous with the trap inlet 34. That is, the flush toilet 10 of this example is configured in a container shape with a bottom at the upper portion of the trap inlet 34.

As shown in FIG. 4, in this embodiment, the bottom portion 3 of the swirl flow generator portion 30 on the rear wall surface 38 side is formed.
The amount of projection of 6, the height region of the trap inlet 34 in the rear wall 38 20~40mm (l _1), a bottom portion 36 is determined such that 30 to 60 mm (l ₂₎ projecting.

Further, in this example, the shape of the peripheral wall portion is determined so that the center P'of the pool surface 32A substantially coincides with the center P of the trap inlet 34. In this example, when the centers are substantially coincident with each other, it means that the center deviation is within 20 mm.

The upper part of the toilet bowl 12 following the swirl flow generator section 30 is formed as a gentle slope 40 in which the inner surface of the bowl around the entire circumference excluding the rear wall surface 38 is gentle. The boundary with the generator unit 30 is a stepped portion 42 having a stepped shape except for the rear wall surface 38.

The height of the swirl flow generator portion 30 is 80 mm (preferably 60 to 80 mm), and the upper end of the swirl flow generator portion 30 has a substantially flat oval shape that is long in the front-rear direction. Its front-back dimension is 210 mm (preferably 1
80 to 230 mm).

In the flush toilet 10 of this example, the supply port 2
The wash water supplied from No. 1 flows counterclockwise in the rim water passage 18 in FIG. 1 and reaches the rear end of the rim water passage 18B on the left side. In the meantime, the cleaning water in the rim water passage 18 is sprayed into the toilet bowl 12 through each water spray hole 20 to wash the toilet bowl. At that time, the washing water is supplied in a state of being evenly dispersed in the toilet bowl 12 through the water spray holes 20.

On the other hand, the cleaning water sprayed into the toilet bowl 12 through the second water spray holes 22 is sprayed into the toilet bowl 12 while maintaining the flow force in the rim water passage 18 to some extent.
As a result, a swirling flow is generated in the gentle slope portion 40.
The momentum of the swirling flow also reaches the accumulated water portion, that is, the accumulated water 32 in the swirling flow generator portion 30, and the swirling flow of the accumulated water 32 is generated therein.

Since the swirl flow generator section 30 has a bottomed container shape, that is, a so-called container shape with a saucer, the swirl flow generated in the gentle slope portion 40. In the swirling flow generator unit 30, the accumulated water 32 swirls with a strong force and is not greatly reduced in the accumulated water portion.

In addition, since the center P'of the pool surface 32A and the center P of the trap inlet 34 are substantially coincident with each other, the swirling flow, that is, the vortex flow is used to draw the waste into the outside through the trap 26 effectively. Is discharged. Moreover, in the flush toilet 10 of this example, a large amount of water ejected from the third water spray hole 24 exerts a downward force with respect to the accumulated water, so that the waste is discharged more effectively.

The accumulated water 3 generated in the swirling flow generator section 30
When the momentum of the swirling flow of 2 becomes strong, the swirling flow tends to spread greatly. When the swirling flow of the accumulated water 32 spreads excessively, it becomes difficult for the swirling flow to gather at the center, specifically, toward the accumulated water portion (difficult to converge).

However, in this example, since the boundary portion from the swirl flow generator portion 30 to the gentle slope portion 40 is the stepped portion 42,
The excessive spread of the swirling flow is suppressed, and the above inconvenience does not occur (see FIG. 3).

However, as compared with the conventional flush-type flush toilet bowl, the water surface 32A can be expanded to some extent. Therefore, the advantage of the P-trap type flush toilet, that is, the height H of the trap drain port 28 (see FIG. 1 (B)) can be kept high, and the sump surface like that of a siphon toilet can be maintained while keeping the toilet structure simple. The spread of can be achieved.

The embodiment of the present invention has been described in detail above, but this is merely an example, and the present invention can be configured in various modified forms without departing from the spirit of the invention.

[Brief description of drawings]

FIG. 1 is a diagram showing a plan sectional structure and a front sectional structure of a swirling flow type flush toilet which is an embodiment of the present invention.

FIG. 2 is a diagram showing a positional relationship of water spray holes of the flush toilet of FIG.

FIG. 3 is a side sectional view of the flush toilet of FIG.

FIG. 4 is an enlarged view showing a swirl flow generator portion of the flush toilet shown in FIGS. 1 to 3.

[Explanation of symbols]

 10 Swirling Flow Type Toilet Bowl 12 Toilet Bowl 26 Trap 30 Swirling Flow Generator Section 32A Water Surface 34 Inlet 36 Bottom 38 Rear Wall 40 Back Slope

Claims (4)

[Claims] 1. A swirling flow type flush toilet of a type in which flush water injected into a toilet bowl is swirled in the toilet bowl to wash the toilet bowl, and an upper portion which is a lower portion of the toilet bowl and which continues from an inlet of the trap,
The lower end is located below the reservoir surface and the upper end is located above the reservoir surface, and the rising angle of the peripheral wall forms a steep angle over the entire circumference, and is configured as a swirling flow generator part of the reservoir water, and The bottom part of the swirl flow generator part is projected toward the center side of the inlet of the trap over the entire circumference to be continuous with the inlet opening, while the upper part of the toilet bowl continuing to the swirl flow generator part is , A swirling flush toilet bowl, characterized in that at least the inner surface of the pot, excluding the rear wall surface, has a gentle gentle slope. 2. The flush toilet bowl according to claim 1, wherein the center of the inlet of the trap and the center of the swirl flow generator section are substantially aligned with each other. 3. The flush toilet according to claim 1 or 2, wherein a bottom portion of the swirl flow generator portion on the rear wall surface side is 30 to 60 mm with respect to a height of 20 to 40 mm from the trap inlet on the rear wall surface. A swirling flush toilet bowl characterized in that it projects toward the trap inlet side. 4. The flush toilet bowl according to claim 1, 2 or 3, wherein the flush toilet bowl is a P trap flush type flush toilet bowl.