JP2001081843A - Siphon jet type flush toilet stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a siphon jet type flush toilet stool capable of controlling the level of sealing water without conducting precise control for a washing water discharge quantity and effecting the stable level of sealing water. SOLUTION: This flush toilet stool includes an annular rim part, a bowl part 2 disposed below the rim part, and a trap drain passage 3 communicated with the bowl part 2, wherein a first washing water discharge port directed toward the bowl part 2 is formed in the rim part, a second washing water discharge port directed toward the trap drain passage 3 is formed in the bottom of the bowl part 2, and the upstream area from a dammed part 3b of the trap drain passage 3 and the downstream area from the dammed part 3b are communicated with each other through a by-pass passage having a very small sectional area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a siphon jet type flush toilet.

[0002]

2. Description of the Related Art The applicant of the present application has disclosed Japanese Patent Application Laid-Open No. 3-90746.
A first washing water discharge port having an annular rim portion, a bowl portion disposed below the rim portion, and a trap drainage passage communicating with the bowl portion; And a siphon jet type flush toilet having a second flushing water discharge port directed to the trap drainage channel formed at the bottom of the bowl portion, the location being lower than the weir of the trap drainage channel by a predetermined height. A toilet with a flush water supply means for supplying flush water for sealing up to water is proposed. In the above-mentioned siphon jet type flush toilet, flush water is discharged from the first flush water discharge port to the bowl portion to clean the wall surface of the bowl portion and raise the water level of the sealed water to the weir portion of the trap drainage channel. (2) The washing water is discharged from the washing water outlet toward the trap drain to fill the trap drain, causing a siphon action to discharge sealing water and dirt from the bowl portion, and then the first washing water outlet. The washing water is discharged to the bowl portion from above to form a water seal. In order to reliably discharge waste from the bowl portion, the siphon action needs to be continued for a predetermined time. In order to continue the siphon action for a predetermined time, it is desirable that a large amount of water be present at the start of the discharge of the wash water from the second wash water discharge port. On the other hand, if a large amount of water is sealed at the time of defecation, the level of the sealed water becomes high, and the rebounded sewage may adhere to the buttocks of the toilet user. According to the siphon jet flush toilet described above, the level of the sealed water can be suppressed to a level lower than the weir of the trap drainage channel at the time of defecation to prevent the splashed sewage from adhering to the buttocks. At the start of the wash water discharge from the water discharge port, the level of the sealed water is raised to the weir of the trap drainage channel by the wash water discharge from the preceding first wash water discharge port,
A large amount of sealing water can be present.

[0003]

Problems to be Solved by the Invention Japanese Patent Laid-Open No. 3-90746
In order to control the level of sealed water, the siphon jet flush toilet of No. 1 precisely controls the flush water discharge time from the first flush water discharge port and the second flush water discharge port, and discharges the flush water. Had to be precisely controlled. Furthermore, when the water pressure of the water supply source is unstable, even if the discharge time of the cleaning water is precisely controlled, the discharge amount of the cleaning water cannot be precisely controlled. The present invention has been made in view of the above problems, and can perform water level control of sealed water without performing precise control of the discharge amount of cleaning water, and can realize a stable water level of sealed water. An object of the present invention is to provide a siphon-jet flush toilet.

[0004]

According to the present invention, in order to solve the above-mentioned problems, an annular rim, a bowl disposed below the rim, and a trap drainage passage communicating with the bowl are provided. A first cleaning water discharge port directed to the bowl portion is formed on the rim portion, and a second cleaning water discharge port directed to the trap drainage channel is formed at the bottom of the bowl portion,
A siphon jet type flush toilet characterized in that an upstream area from a weir section and a downstream area from a weir section of a trap drainage channel communicate with each other via a bypass passage having a small cross-sectional area.

In the siphon jet flush toilet according to the present invention, the level of the sealed water at the time of defecation is suppressed to the level of the entrance of the bypass flow passage, so that the splashed sewage is prevented from adhering to the buttocks. Cleaning water is discharged from the first cleaning water discharge port,
The sealing water level rises. Water flows out from the weir portion of the trap drainage channel to the downstream area through the bypass flow path, but since the cross-sectional area of the bypass flow path is very small, the flow rate of the sealed water flowing out is discharged from the first washing water discharge port. Much less than the flow rate of the wash water. As a result, the level of the sealed water rises to the level of the weir of the trap drainage channel. Cleaning water is discharged from the second cleaning water discharge port. At the start of the discharge of the wash water from the second wash water discharge port, a large amount of water is present, so that the siphon action continues for a predetermined time and the waste is reliably discharged from the bowl portion. First
Cleaning water is discharged from the cleaning water discharge port, and water is sealed in the empty bowl portion. The level of the sealed water temporarily rises to the weir of the trap drainage channel, but the water above the inlet of the bypass passage is discharged to the downstream region from the weir of the trap drainage passage through the bypass passage. Therefore, after a lapse of a predetermined time, the level of the sealed water is suppressed to the inlet level of the bypass passage. In the siphon jet type flush toilet according to the present invention, even if there is some variation in the discharge amount of the flush water, the water level of the sealed water becomes the inlet level of the bypass flow path after a predetermined time has elapsed after flushing the toilet. In addition, the water level of the sealed water can be controlled without precisely controlling the discharge amount of the washing water, and a stable water level of the sealed water can be realized.

In a preferred embodiment of the present invention, a weir wall is erected at a bent portion of the trap drainage channel, a top portion of the weir wall forms a weir portion of the trap drainage channel, and a small hole formed in the weir wall is bypassed. Form a flow path. In a preferred aspect of the present invention, a weir wall is erected at a bent portion of the trap drainage channel, a top portion of the weir wall forms a weir portion of the trap drainage channel, and a slit formed on the weir wall forms a bypass flow passage. I do. In a preferred aspect of the present invention, the top of the bent portion of the trap drainage channel forms a weir, one end communicates with the upstream region of the trap drainage weir, and the other end downstream of the trap drainage weir. A small-diameter pipe communicating with the pipe forms a bypass flow path. In a preferred aspect of the present invention, the top of the bent portion of the trap drainage channel forms a weir, and the slit formed in the bent portion of the trap drainage channel forms a bypass flow path. The above four modes are considered as modes of the bypass flow path.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described.
As shown in FIG. 1, the siphon jet type flush toilet 1
The bowl portion 2, a trap drainage channel 3 whose one end communicates with the bottom of the bowl portion 2, an annular rim water channel 4 provided at the upper peripheral edge of the bowl portion 2, and a rear portion of the bowl portion 2. And an equipment storage box 5. On the bottom wall of the rim waterway 4,
A large number of through holes 4a are formed at intervals in the circumferential direction. A through hole 2 a is formed at the bottom of the bowl portion 2 and directed to the trap drainage channel 3. Trap drainage channel 3
Is connected to a drain pipe (not shown).

An inclined weir wall 3b is provided upright at the bent portion 3a of the trap drainage channel 3. The weir wall 3 b is formed integrally with the trap drainage channel 3. Small diameter hole 3 at base of weir wall 3b
c is formed. The top of the weir wall 3b forms the weir of the trap drainage channel 3. The small-diameter hole 3c is
A bypass passage having a minute cross-sectional area is formed to connect the upstream region with the weir portion and the downstream region with the weir portion.

Water supply pipe 6 connected to a water supply pipe (not shown)
Extend into the equipment storage box 5. Water pipe 6 to branch pipe 6
a and 6b are branched. A water stop valve 7a driven by an electromagnetic solenoid is connected to the branch pipe 6a, and a water stop valve 7b driven by an electromagnetic solenoid is connected to the branch pipe 6b. A pipe 8 a extending from the water stop valve 7 a is connected to the rim water passage 4. A pipe 8b extending from the water stop valve 7b is connected to the through hole 2a via an atmosphere release valve 9. A control device 10 that controls the operation of the water shutoff valves 7a and 7b is provided in the equipment storage box 5. An operation unit 11 for sending a cleaning start signal to the control device 10 is provided.

The operation of the siphon jet type flush toilet 1 according to this embodiment will be described. At the time of defecation, the water level of the sealing water W of the siphon jet flush toilet 1 is maintained at the level of the entrance of the small diameter hole 3c. Since there is an appropriate vertical distance between the water surface of the sealing water W and the buttocks of the toilet user, there is no possibility that the sewage splashed during defecation adheres to the buttocks of the toilet user.

When the user manually operates the operation unit 11 after defecation, the water stop valve 7a is opened in response to a command from the control device 10, and the washing water flows into the rim water passage 4 through the pipe 8a.
It is discharged to the bowl part 2 through the through hole 4a. Bowl part 2
The washing water discharged to the inside cleans the wall surface of the bowl portion 2 and raises the level of the sealed water W. The sealing water W flows out of the weir portion of the trap drainage channel 3 to the downstream area through the small diameter hole 3c. The flow rate of the water W is much smaller than the flow rate of the washing water discharged from the through hole 4a of the rim water passage 4. As a result, the water level of the sealing water W rises to the level of the top of the weir wall 3b, which is the weir of the trap drainage channel 3. Upon receiving a command from the control device 10, the water stop valve 7a closes after a predetermined time has elapsed.

Water stop valve 7b receives a command from control device 10
Is opened, and the washing water is discharged from the bottom of the bowl portion 2 to the trap drain passage 3 through the pipe 8b and the through hole 2a.
The cleaning water discharged from the through hole 2a fills the trap drainage channel 3 and causes a siphon action. When the discharge of the washing water from the through hole 2a starts, a large amount of the water W is present, so that the siphon action continues for a predetermined time, and the waste is reliably discharged from the bowl portion 2. Upon receiving a command from the control device 10, the water stop valve 7b closes after a predetermined time has elapsed.

The water shutoff valve 7a receives a command from the control device 10.
Is opened, washing water flows into the rim water passage 4 through the pipe 8a, and is discharged to the bowl portion 2 through the through hole 4a. The washing water discharged to the bowl portion 2 forms the sealed water W in the emptied bowl portion 2. The water level of the sealing water W temporarily rises to the top of the weir wall 3b, which is the weir of the trap drainage channel 3, but the sealing water W above the small-diameter hole 3c passes through the small-diameter hole 3c and passes through the trap drainage channel 3. Since the water is discharged from the weir to the downstream area, the water level of the sealed water W is suppressed to the level at the entrance of the small-diameter hole 3c after a predetermined time has elapsed.

As can be seen from the above description, in the siphon-jet flush toilet 1 according to the present invention, the water level of the sealed water W becomes the level of the entrance of the small-diameter hole 3c after a lapse of a predetermined time after the flushing of the toilet. The water level of the sealed water W can be controlled without performing precise control of the water discharge amount, and a stable water level of the sealed water W can be realized.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. As shown in FIG. 2, a slit 3d may be formed in the weir wall 3b. Again, in this case,
Since the water level of the sealing water W at the time of defecation is maintained at the level of the bottom of the slit 3d, there is no possibility that the splashed sewage adheres to the buttocks of the toilet user. Since the cross-sectional area of the bypass passage formed by the slit 3d is very small, the water level of the sealing water W is set to the trap drainage channel 3 when the discharge of the cleaning water from the through hole 2a is started.
Is raised to the top of the weir wall 3b, which is a weir part, and a large amount of water W is present, so that the siphon action continues for a predetermined time and the waste is reliably discharged from the bowl part 2. As in the embodiment of FIG. 1, the water level of the sealed water W can be controlled and the stable water level of the sealed water W can be realized without performing precise control of the discharge amount of the cleaning water.

As shown in FIG. 3, a top portion of the bent portion 3a of the trap drainage channel 3 is a weir portion, one end of which communicates with the upstream region of the trap drainage channel 3 and another end thereof. A small-diameter pipe 3e that communicates with the downstream area from the section may be provided. Also in this case, since the water level of the sealed water W at the time of defecation is maintained at the level of the entrance of the small diameter pipe 3e, there is no possibility that the rejected sewage adheres to the buttocks of the toilet user. Since the cross-sectional area of the bypass passage formed by the small-diameter pipe 3e is very small, when the discharge of the washing water from the through hole 2a starts, the sealing water W
Has risen to the top of the bent portion 3a, which is the weir of the trap drainage channel 3, and a large amount of sealed water W exists. Is discharged. As in the embodiment of FIG. 1, the water level of the sealed water W can be controlled and the stable water level of the sealed water W can be realized without performing precise control of the discharge amount of the cleaning water.

As shown in FIG. 4, the top of the bent portion 3a of the trap drainage channel 3 is a weir, and a slit 3f is formed in the bent portion 3a.
May be formed. Also in this case, the water level of the sealed water W at the time of defecation is maintained at the level of the bottom of the slit 3f.
There is no danger that the splashed sewage will adhere to the buttocks of the toilet user. Since the cross-sectional area of the bypass passage formed by the slit 3f is very small, the level of the sealing water W rises to the top of the bent portion 3a, which is the weir of the trap drainage channel 3, at the start of the discharge of the washing water from the through hole 2a. Since a large amount of the water W is present, the siphon action continues for a predetermined time, and the waste is reliably discharged from the bowl portion 2. As in the embodiment of FIG. 1, the water W
Can be controlled, and a stable sealed water level can be realized.

As shown in FIG. 5, a flush valve 12 is provided in the middle of the water supply pipe 6, and the downstream end of the water supply pipe 6 is connected to a flow path switching valve 13 of an appropriate type such as a drum type or a disk type. One of the discharge ports of the flow path switching valve 13 is connected to the rim water passage 4 through a pipe 8a, and the other discharge port of the flow path switching valve 13 is connected to the through hole 2 through a pipe 8b and an atmosphere release valve 9.
a may be connected. In this case, the flow path switching valve 13 is operated in synchronization with the operation of the flush valve 12 which automatically closes after the valve is opened, and the rim water passage 4 → the through hole 2a of the bowl 2
→ Supply cleaning water in the order of rim water channel 4.

[0019]

As can be seen from the above description, in the siphon jet flush toilet according to the present invention, the level of the sealed water can be controlled without performing the precise control of the discharge amount of the flush water, and the stable operation can be achieved. The sealed water level can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a siphon jet type flush toilet according to an embodiment of the present invention. (A) is a side sectional view, (b)
FIG. 4 is a view taken along the line bb in FIG.

FIG. 2 is a configuration diagram of a siphon jet type flush toilet according to another embodiment of the present invention. (A) is a side sectional view,
(B) is a bb arrow view of (a).

FIG. 3 is a configuration diagram of a siphon jet type flush toilet according to another embodiment of the present invention. (A) is a side sectional view,
(B) is a bb arrow view of (a).

FIG. 4 is a configuration diagram of a siphon jet type flush toilet according to another embodiment of the present invention. (A) is a side sectional view,
(B) is a bb arrow view of (a).

FIG. 5 is a side sectional view of a siphon jet type flush toilet according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Siphon jet type flush toilet 2 Bowl part 2a Through-hole of bowl part 3 Trap drainage channel 3a Bent part 3b Weir wall 3c Small diameter hole 3d, 3f Slit 3e Small diameter pipe 4 Rim water passage 4a Rim water passage 7a, 7b Stop Water valve 12 Flash valve 13 Flow switching valve

Claims (5)

[Claims] 1. A first washing water which is provided with an annular rim, a bowl disposed below the rim, and a trap drainage passage communicating with the bowl, the rinsing being directed to the bowl. A discharge port is formed, a second washing water discharge port directed to the trap drainage channel is formed at the bottom of the bowl portion, and the upstream area from the weir and the downstream area from the weir of the trap drainage have a small cross-sectional area. A siphon jet type flush toilet characterized by being communicated via a bypass flow path. 2. A weir wall is erected at a bent portion of a trap drainage channel, a top of the weir wall forms a weir portion of the trap drainage channel, and a small hole formed in the weir wall forms a bypass flow passage. The siphon-jet flush toilet according to claim 1, characterized in that: 3. A dam wall is provided upright at a bent portion of the trap drainage channel, a top portion of the dam wall forms a dam portion of the trap drainage channel, and a slit formed in the dam wall forms a bypass flow path. The siphon-jet flush toilet according to claim 1. 4. The top of the bent portion of the trap drainage channel forms a weir, one end communicates with the upstream region from the trap drainage weir and the other end communicates with the downstream region from the trap drainage weir. The siphon-jet flush toilet according to claim 1, wherein the small-diameter pipe forms a bypass flow path. 5. The siphon according to claim 1, wherein a top portion of the bent portion of the trap drainage channel forms a weir portion, and a slit formed in the bent portion of the trap drainage channel forms a bypass flow channel. Jet flush toilet.