JP3630292B2 - Siphon jet flush toilet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a siphon jet flush toilet.
[0002]
[Prior art]
The applicant of the present application, in JP-A-3-90746, includes an annular rim portion, a bowl portion disposed below the rim portion, and a trap drain channel communicating with the bowl portion. A siphon jet flush toilet in which a first flush water discharge port directed to the head is formed and a second flush water discharge port directed to the trap drainage channel is formed at the bottom of the bowl portion, the trap drainage channel Toilet bowl provided with washing water supply means for supplying washing water for sealing water to a position lower than the weir part by a predetermined height has been proposed.
In the siphon jet flush toilet, the washing water is discharged from the first washing water discharge port to the bowl portion to wash the wall surface of the bowl portion, and the water level of the sealed water is raised to the weir portion of the trap drainage channel. 2 The cleaning water is discharged from the cleaning water discharge port toward the trap drainage channel to fill the trap drainage channel, causing siphon action to discharge the sealed water and filth from the bowl, and then the first cleaning water discharge port The sealing water is formed by discharging cleaning water from the bowl to the bowl.
In order to reliably discharge filth from the bowl portion, the siphon action needs to continue for a predetermined time. In order to continue the siphon action for a predetermined time, it is desirable that a large amount of sealed water exists at the start of the discharge of the cleaning water from the second cleaning water discharge port. On the other hand, if there is a large amount of sealed water at the time of defecation, the level of the sealed water becomes high, and the boiled sewage may adhere to the buttocks of the toilet user.
According to the siphon jet flush toilet, when the stool is defecationed, the level of the sealing water can be suppressed to a level below the weir part of the trap drainage channel and the sewage that has bounced back can be prevented from adhering to the heel part. At the start of cleaning water discharge from the water discharge port, the level of the sealing water is raised to the weir part of the trap drainage channel by discharging the cleaning water from the preceding first cleaning water discharge port, so that a large amount of sealed water exists. Can do.
[0003]
[Problems to be solved by the invention]
In the siphon jet flush toilet of JP-A-3-90746, in order to control the water level of the sealed water, the washing water discharge time from the first washing water discharge port and the second washing water discharge port is precisely controlled, It was necessary to precisely control the discharge amount of cleaning water. Further, when the water pressure of the water supply source is unstable, the discharge amount of the cleaning water cannot be precisely controlled even if the cleaning water discharge time is precisely controlled, so that the water level of the sealed water is not stable.
The present invention has been made in view of the above problems, and can control the water level of the sealed water without performing precise control of the discharge amount of the washing water, and can realize a stable water level of the sealed water. The object is to provide a siphon jet flush toilet.
[0004]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problems, an annular rim portion, a bowl portion disposed below the rim portion, and a trap drainage channel communicating with the bowl portion are provided, and the rim portion is connected to the bowl portion. A first flush water discharge port is formed, and a second flush water discharge port is formed at the bottom of the bowl portion and directed to the trap drainage channel. Provided is a siphon jet flush toilet characterized in that a downstream area communicates with a bypass channel having a small cross-sectional area.
[0005]
In the siphon jet flush toilet according to the present invention, at the time of defecation, the water level of the sealed water is suppressed to the inlet level of the bypass flow path, and the boiled sewage is prevented from adhering to the heel portion.
Cleaning water is discharged from the first cleaning water discharge port, and the level of the sealing water rises. The seal water flows out from the weir part of the trap drainage channel to the downstream area through the bypass channel, but since the cross-sectional area of the bypass channel is small, the flow rate of the seal water flowing out is discharged from the first washing water discharge port. Much less than the flow rate of washing water. As a result, the level of the sealed water rises to the level of the weir part of the trap drainage channel.
Wash water is discharged from the second wash water discharge port. At the start of discharge of cleaning water from the second cleaning water discharge port, a large amount of sealed water is present, so that the siphon action continues for a predetermined time, and filth is reliably discharged from the bowl portion.
Wash water is discharged from the first wash water discharge port, and sealed water is formed in the empty bowl portion. The water level of the sealed water temporarily rises to the weir part of the trap drainage channel, but the sealed water above the inlet of the bypass channel is discharged from the weir part of the trap drainage channel to the downstream area through the bypass channel. Therefore, after a predetermined time has elapsed, the water level of the sealed water is suppressed to the inlet level of the bypass flow path.
In the siphon jet flush toilet according to the present invention, even if there is some variation in the discharge amount of the wash water, the water level of the sealed water will be at the inlet level of the bypass channel after a predetermined time has passed since toilet flushing. Further, it is possible to control the water level of the sealed water without performing precise control of the discharge amount of the washing water, and to realize a stable water level of the sealed water.
[0006]
In a preferred embodiment of the present invention, a dam wall is erected at the bent portion of the trap drainage channel, the top of the dam wall forms the dam portion of the trap drainage channel, and the small-diameter hole formed in the dam wall defines the bypass channel. Form.
In a preferred embodiment of the present invention, a dam wall is erected at the bent portion of the trap drainage channel, the top of the dam wall forms the dam portion of the trap drainage channel, and the slit formed in the dam wall forms the bypass channel To do.
In a preferred embodiment of the present invention, the top of the bent part of the trap drainage channel forms a weir part, one end communicates with the upstream area from the weir part of the trap drainage channel, and the other end is the downstream area from the weir part of the trap drainage channel. A small-diameter pipe communicating with the pipe forms a bypass flow path.
In a preferred embodiment 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 channel.
The above four modes can be considered as modes of the bypass channel.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described.
As shown in FIG. 1, a siphon jet flush toilet 1 includes a bowl portion 2, a trap drainage passage 3 having one end communicating with the bottom portion of the bowl portion 2, and an annular rim disposed on the upper edge of the bowl portion 2. A water passage 4 and an equipment storage box 5 disposed behind the bowl portion 2 are provided. A large number of through holes 4 a are formed in the bottom wall of the rim water passage 4 at intervals in the circumferential direction. A through hole 2 a directed to the trap drainage channel 3 is formed at the bottom of the bowl portion 2. The other end of the trap drainage channel 3 is connected to a drainage pipe (not shown).
[0008]
An inclined dam wall 3 b is erected on the bent portion 3 a of the trap drainage channel 3. The dam wall 3 b is formed integrally with the trap drainage channel 3. A small diameter hole 3c is formed at the base of the dam wall 3b. The top of the dam wall 3 b forms the dam portion of the trap drainage channel 3. The small-diameter hole 3c forms a bypass passage having a small cross-sectional area that allows the upstream area of the trap drainage channel 3 to communicate with the downstream area from the weir section.
[0009]
A water supply pipe 6 connected to a water pipe (not shown) extends into the equipment storage box 5. Branch pipes 6 a and 6 b are branched from the water supply pipe 6. 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 the air release valve 9.
A control device 10 that controls the operation of the water stop valves 7 a and 7 b is disposed in the equipment storage box 5. An operation unit 11 for sending a cleaning start signal to the control device 10 is provided.
[0010]
The operation of the siphon jet flush toilet 1 according to the present embodiment will be described.
At the time of defecation, the water level of the sealed 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 sealed water W and the buttocks of the toilet bowl user, there is no possibility that the sewage that has bounced back during defecation will adhere to the buttocks of the toilet bowl user.
[0011]
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, the washing water flows into the rim water passage 4 through the pipe 8a, and passes through the through hole 4a. Discharge to bowl 2. The cleaning water discharged to the bowl part 2 cleans the wall surface of the bowl part 2 and raises the level of the sealing water W. The sealed water W flows out from the weir portion of the trap drainage channel 3 to the downstream area through the small diameter hole 3c. However, since the cross-sectional area of the bypass channel formed by the small diameter hole 3c is very small, the sealed flow out through the small diameter hole 3c. The flow rate of the water W is much smaller than the flow rate of the cleaning water discharged from the through hole 4a of the rim water passage 4. As a result, the water level of the sealed water W rises to the level of the top portion of the dam wall 3 b that is the dam portion of the trap drainage channel 3. In response to a command from the control device 10, the water stop valve 7a is closed after a predetermined time has elapsed.
[0012]
In response to a command from the control device 10, the water stop valve 7b is opened, and the wash water is discharged from the bottom of the bowl portion 2 toward the trap drainage 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. Since a large amount of sealed water W exists at the start of the discharge of the cleaning water from the through hole 2a, the siphon action continues for a predetermined time, and the filth is reliably discharged from the bowl portion 2. In response to a command from the control device 10, the water stop valve 7b is closed after a predetermined time has elapsed.
[0013]
In response to a command from the control device 10, the water stop valve 7a is opened, and the cleaning 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 cleaning water discharged to the bowl part 2 forms a sealed water W in the empty bowl part 2. The level of the sealing water W temporarily rises to the top of the weir wall 3b, which is the weir part of the trap drainage channel 3, but the sealing water W above the small-diameter hole 3c passes through the small-diameter hole 3c in the trap drainage channel 3. Since the water is discharged from the weir part to the downstream region, the water level of the sealed water W is suppressed to the level of the inlet of the small diameter hole 3c after a predetermined time has elapsed.
[0014]
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 reaches the inlet level of the small-diameter hole 3c after a predetermined time has elapsed since toilet flushing. Therefore, the water level of the sealed water W can be controlled without performing precise control of the above, and a stable water level of the sealed water W can be realized.
[0015]
As mentioned above, although the Example of this invention was described, this invention is not limited to the said Example.
As shown in FIG. 2, a slit 3d may be formed in the weir wall 3b. Also 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 boiled sewage will adhere to the toilet user's buttocks. Since the cross-sectional area of the bypass flow path formed by the slit 3d is very small, the level of the sealing water W rises to the top of the weir wall 3b which is the weir part 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 sealed water W exists, the siphon action continues for a predetermined time, and the filth is reliably discharged from the bowl portion 2. As in the embodiment of FIG. 1, the water level of the sealed water W can be controlled without performing precise control of the discharge amount of the cleaning water, and a stable water level of the sealed water W can be realized.
[0016]
As shown in FIG. 3, the top of the bent part 3 a of the trap drainage channel 3 is a weir part, one end communicates with the upstream area from the weir part of the trap drainage channel 3, and the other end is below the weir part of the trap drainage channel 3. You may arrange | position the small diameter pipe 3e connected to a basin. Also in this case, since the water level of the sealing 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 boiled sewage adheres to the toilet user's buttocks. Since the cross-sectional area of the bypass flow path formed by the small-diameter pipe 3e is very small, the level of the sealing water W rises to the top of the bent part 3a that is the weir part of the trap drainage channel 3 when the discharge of the washing water from the through hole 2a is started. Since a large amount of the sealed water W exists, the siphon action continues for a predetermined time, and the filth is reliably discharged from the bowl portion 2. As in the embodiment of FIG. 1, the water level of the sealed water W can be controlled without performing precise control of the discharge amount of the cleaning water, and a stable water level of the sealed water W can be realized.
[0017]
As shown in FIG. 4, the top part of the bent part 3a of the trap drainage channel 3 may be a weir part, and a slit 3f may be formed in the bent part 3a. Also 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 3f, there is no possibility that the sewage that has bounced off adheres to the toilet user's buttocks. Since the cross-sectional area of the bypass flow path formed by the slit 3f is very small, the water level of the sealing water W rises to the top of the bent portion 3a which is the weir portion of the trap drainage channel 3 when the discharge of the washing water from the through hole 2a is started. Since a large amount of the sealed water W exists, the siphon action continues for a predetermined time, and the filth is reliably discharged from the bowl portion 2. As in the embodiment of FIG. 1, the water level of the sealing water W can be controlled without performing precise control of the discharge amount of the cleaning water, and a stable sealing water level can be realized.
[0018]
As shown in FIG. 5, a flush valve 12 is disposed 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 discharge port of the switching valve 13 is connected to the rim water passage 4 via the pipe 8a, and the other discharge port of the flow path switching valve 13 is connected to the through hole 2a via the pipe 8b and the atmosphere release valve 9. May be. In this case, the flow path switching valve 13 is operated in synchronization with the operation of the flush valve 12 that automatically closes after the valve is opened, and the cleaning water is supplied in the order of the rim water passage 4 → the through hole 2 a of the bowl 2 → the rim water passage 4. Supply.
[0019]
【The invention's effect】
As can be seen from the above description, in the siphon jet flush toilet according to the present invention, the water level of the sealed water can be controlled and the stable sealed water level can be realized without precise control of the discharge amount of the washing water. can do.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a siphon jet flush toilet according to an embodiment of the present invention. (A) is side sectional drawing, (b) is a bb arrow line view of (a).
FIG. 2 is a configuration diagram of a siphon jet flush toilet according to another embodiment of the present invention. (A) is side sectional drawing, (b) is a bb arrow line view of (a).
FIG. 3 is a configuration diagram of a siphon jet flush toilet according to another embodiment of the present invention. (A) is side sectional drawing, (b) is a bb arrow line view of (a).
FIG. 4 is a configuration diagram of a siphon jet flush toilet according to another embodiment of the present invention. (A) is side sectional drawing, (b) is a bb arrow line view of (a).
FIG. 5 is a side sectional view of a siphon jet flush toilet according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Siphon jet flush toilet 2 Bowl part 2a Bowl part through hole 3 Trap drainage path 3a Bending part 3b Weir wall 3c Small diameter hole 3d 3f Slit 3e Small diameter pipe 4 Rim water passage 4a Rim water passage through hole 7a, 7b Stop Water valve 12 Flash valve 13 Flow path switching valve

Claims (5)

An annular rim portion, a bowl portion disposed below the rim portion, and a trap drainage channel communicating with the bowl portion, a first cleaning water discharge port directed to the bowl portion is formed in the rim portion. A second washing water discharge port directed to the trap drainage channel is formed at the bottom of the bowl part, and the upstream region from the weir part of the trap drainage channel and the downstream region from the weir part via a bypass channel having a small cross-sectional area Siphon jet flush toilet, characterized by communication. A dam wall is erected 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 small diameter hole formed in the dam wall forms a bypass channel. Item 2. A siphon jet flush toilet according to item 1. The dam wall is erected at the bent portion of the trap drainage channel, the top of the dam wall forms the dam portion of the trap drainage channel, and the slit formed in the dam wall forms the bypass channel. 1. A siphon jet flush toilet according to 1. The top of the bent part of the trap drainage channel forms a weir part, one end communicates with the upstream area from the trap drainage channel weir part, and the other end communicates with the downstream area from the trap drainage channel weir part The siphon jet flush toilet according to claim 1, wherein a path is formed. The siphon jet flush toilet according to claim 1, wherein 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 channel.

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