JP2011202400A - Flushing type toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-saving type flushing toilet bowl preventing a bowl surface of a toilet bowl from being soiled.SOLUTION: The flushing toilet bowl includes a trap pipeline 5 extending in communication with a bottom part of a bowl part 3 to discharge dirt in the bowl part 3 and comprising a weir part at the uppermost end to specify the standing waver level of the bowl part 3; a first water discharge part 14 discharging flushing water to a rim part and forming swirl flow on a dirt receiving surface; a second water discharge part 15 formed on the dirt receiving surface below the first water discharge part 14 and discharging flushing water to the standing water in the bowl part 3 to form flow that agitates the flushing water in the bowl part up and down; a first water passage 16 supplying the first water discharge part 14 with the flushing water; and a second water passage 17 supplying the second water discharge part 15 with the flushing water. The weir part of the trap pipeline 5 is provided with a standing water level changing means 1 for changing the standing water level of the bowl part 3. The standing water level changing means 1 controls to make the standing water level of the bowl part 3 to be higher than the second water discharge part before starting to wash, and to make the standing water level of the bowl part 3 to be lower than the second water discharge part immediately after starting to wash.

Description

  The present invention relates to a flush toilet.

Conventionally, a flush toilet has been known as a toilet that does not cause siphon action.
Such conventional wash-out toilets have a simple structure and are inexpensive compared to siphon-type toilets that produce a siphon action and wash the toilet bowl, with a method of flushing filth by running water due to a water drop. In addition, since the siphon action is not generated, there is an advantage that the amount of washing water used for toilet flushing can be reduced. Therefore, it is consistent with the water-saving needs of washing water that have been conventionally required for toilets.

  In recent years, it has been required to improve the cleaning performance of the toilet bowl and to further reduce the amount of water to be washed, and the first water discharge part that forms a swirling flow on the bowl part and the washing water in the bowl part are agitated. A water-saving toilet comprising a second water discharger that forms a flow is known (for example, see Patent Document 1). In such a toilet, the stagnant waste floating on the surface of the stored water is submerged in the stored water by stirring the stored water in the bowl part up and down during the cleaning, and then drained through the trap pipeline. Improvement and water saving are achieved at the same time, and it is necessary to stir the water up and down. Therefore, it is inevitable that the second water discharge part is formed in the bowl part above the water level before the start of cleaning. It has become.

Japanese Patent No. 3975486

  However, in the toilet bowl in which the opening of the second water discharge part described in Patent Document 1 described above is formed in the bowl part above the stored water level before the start of cleaning, the opening of the second water discharge part is in the air during excretion. Therefore, there is a problem that filth or the like is likely to adhere to the vicinity of the opening of the second water discharge portion, and there is a possibility that the filth may remain when the filth enters and adheres to the opening of the second water discharge portion. . In addition, after washing, the wash water remaining in the water conduit communicating with the opening of the second water discharge port gradually flows from the opening of the second water discharge port through the bowl portion to the stored water, so that the second water discharge port There is a problem in that the bowl near the opening is likely to cause water stains and molds, which may become dirty and adhere.

  Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and is a wash-off that can prevent dirt due to dirt and the like adhering to the bowl surface of the toilet bowl and achieve further water saving. The purpose is to provide a toilet bowl.

In order to achieve the above-mentioned object, the present invention is a wash-out type toilet that cleans a toilet bowl with washing water, and flushes and discharges filth, and has a bowl-shaped filth receiving surface and an inner wall surface of its upper edge. A rim portion projecting toward the direction, and a bottom portion of the bowl portion that communicates with the bottom portion of the bowl portion so as to discharge the filth in the bowl portion, and the uppermost end that defines the water level in the bowl portion. A trap pipe provided with a weir part, a first water discharge part formed in the rim part, for discharging cleaning water to the rim part to form a swirl flow on the waste receiving surface, and filth below the first water discharge part A first water supply unit that is formed on the receiving surface, discharges cleaning water to the water stored in the bowl unit, and forms a flow of stirring the cleaning water in the bowl unit up and down, and a first water supply to the first water discharging unit Wash-off having a water passage and a second water passage that supplies wash water to the second water discharge section In the toilet bowl, the weir part of the trap pipe is provided with a stored water level changing means for changing the stored water level of the bowl part. The water level is set to be higher than that of the second water discharger, and immediately after the start of cleaning, the water level of the bowl is controlled to be lower than that of the second water discharger.
In the present invention configured as described above, since the second water discharge portion is present in the water stored in the bowl portion at the time of filth excretion before the start of cleaning, filth and the like are not attached to the second water discharge portion. It is possible to prevent filth from remaining due to entering. Since it is possible to prevent the second water discharge portion from being contaminated with dirt and the like, it is possible to prevent the second water discharge portion from being washed, so that it is possible to wash with a smaller amount of washing water as compared with the conventional one and achieve further water saving . In addition, immediately after the start of cleaning, the second water discharger is present in the air higher than the water level in the bowl, so the water stored in the bowl is stirred up and down by the water discharged from the second water discharger. Therefore, improvement in cleaning performance and water saving can be achieved at the same time.

In the present invention, preferably, the stored water level changing means is controlled so that the stored water level in the bowl portion is lower than the second water discharging portion before the cleaning water is discharged from the second water discharging portion. It is characterized by.
In the present invention configured as described above, the second water discharger is present in the air higher than the water level of the water stored in the bowl before the wash water is discharged from the second water discharger. With the cleaning water discharged from the water, the water stored in the bowl portion can be stirred up and down, and improvement in cleaning performance and water saving can be achieved at the same time.

  The present invention has been made to solve the above-mentioned problems of the prior art, and is a wash-off type large size that can prevent dirt due to dirt attached to the bowl surface of the toilet bowl and achieve further water saving. A toilet bowl can be provided.

It is sectional drawing of the flush toilet bowl of this invention before washing | cleaning start. It is sectional drawing of the wash-out type toilet of this invention in before washing water is discharged from the 2nd water discharging part after the washing | cleaning start. It is a system block diagram in the flush toilet bowl of the present invention. It is a timing chart figure at the time of washing in the wash-out type toilet of the present invention.

FIG. 1 is a cross-sectional view of a flush toilet of the present invention before the start of washing. The operation during standby and excretion will be described in detail with reference to FIG.
In the flush toilet 10, the trapped water is formed by the trap pipe 5 connected to the bowl portion 3 where the user excretes. A side jet spouting port 15 as a second water discharging unit is formed on the side wall of the bowl unit 3. The side jet spouting port 15 is formed at a height of 50 mm or more and less than 100 mm in the sealing depth of the bowl portion 3, and is connected to a water supply device (not shown) via a second water passage 17. At the time of standby, the weir part 2 installed on the crown 1 of the trap pipe 5 moves upward, and the accumulated water 4 rises to a higher water level (initial accumulated water level A) than the jet spout 13. The stored water 4 satisfies the requirement that the sealed water depth is 50 mm or more and 100 mm or less specified in the Building Standards Act Construction Ordinance, and the sanitary property for the drain pipe is ensured. In the state where the water level is high (the state of the initial stored water level A), the user excretes. At this time, the accumulated water 4 is rising, and the area of the dry surface on the filth receiving surface 18 of the bowl portion 3 is narrowed. Thereby, it can reduce that excrement adheres to the dry surface of bowl part 3. FIG.

  Since the stored water 4 has a water level higher than the side jet outlet 15 (initially stored water level A) before the start of cleaning, the side jet outlet 15 is placed in the stored water of the bowl section 3. Since it exists, filth etc. do not adhere and it can prevent filth from entering the side jet outlet 15 and remaining filth.

FIG. 2 is a cross-sectional view of the flush toilet according to the present invention before the washing water is discharged from the second water discharger after the start of washing. A detailed description will be given of an operation in which the user performs a toilet flushing operation to specifically discharge excrement.
When the user's excretion is finished and the user operates the toilet cleaning operation means (not shown), the water supply device (not shown) also supplies the washing water from the first water discharging part 14 provided in the rim part 12 of the flush toilet 10. Supply. Immediately after the start of cleaning, the weir unit 2 starts to descend. As the weir part 2 descends, the accumulated water 4 is lowered to a water level (B) lower than the side jet outlet 15. Thereafter, a water supply device (not shown) supplies water to the side jet outlet 15. Since the wash water from the side jet spout 15 forms a swirling flow in the vertical direction, it is possible to stir the filth floating in the vicinity of the stored water surface into the water stored in the bowl portion 3. The swirling flow in the vertical direction formed by the side jet spouting port 15 flows toward the trap pipe 5 while entraining filth. Due to this effect, waste can be sufficiently discharged without siphon action, and the excrement is discharged to the water distribution pipe of the building (not shown) together with the accumulated water stirred by the up and down rotation. At this time, since the weir portion 2 of the trap pipe 5 is lowered, excrement is discharged to the water distribution pipe beyond the crown 1 of the trap pipe 5 even if the amount of water is small. Since it is a wash-out toilet, all of the stored water is not discharged, and the amount of water used to push out the excrement is the amount of washing water, so water can be saved. When the discharging operation is completed, the weir unit 2 returns to the state shown in FIG. 1 to ensure the sealing depth during standby.

FIG. 3 is a system block diagram of the flush toilet of the present invention. The linking operation of each part will be described in detail with reference to FIG.
The city water is supplied to the bowl portion 3 of the flush toilet 10 through the water supply device 8 and is led to the drain pipe 11 through the trap pipe 5. The control means 9 operates the dam section driving means 7 and the water supply device 8 that drive the dam section 2 that is the stored water level changing means up and down, with the operation means 6 that instructs the toilet cleaning operation by the user as an input.

FIG. 4 is a timing chart at the time of washing in the flush toilet of the present invention. The cooperation operation of each unit corresponding to the user's operation will be described in detail with reference to FIG.
The flush toilet 10 stands by in a state where the water level of the stored water 4 is high by the trap pipe 5 connected to the bowl portion 3 for excretion. The user sits in the flush toilet 10 to excrete and excretes. When excretion is performed, the user performs a cleaning start operation by the operation means 6. At that time, a signal is sent from the operation means 6 to the control means 9. The control means 9 sends a signal to the water supply device 8 to start bowl cleaning. After washing the bowl for a predetermined time, a signal is sent from the control means 9 to the weir drive means 7 in order to perform the operation of discharging the filth. Receiving the signal from the control means 9, the weir drive means 7 starts the descent of the weir 2 and discharges the filth. After a predetermined time, the weir drive means 7 starts to raise the weir 2 by a signal from the control means 9. After the rise of the weir unit 2 is finished and the water level of the accumulated water 4 reaches the standby water level, the washing from the water supply device 8 is finished by the signal from the control means 9 and the washing is finished. .

  In the above-described embodiment, the toilet bowl 10 is a wash-out type toilet 10 in which the toilet bowl is washed with washing water, and the filth is washed away and discharged, and the bowl-shaped filth receiving surface 18 and the inner wall surface of the upper edge thereof face inward. And a rim portion 12 that protrudes from the bottom of the bowl portion 3 so as to discharge the filth in the bowl portion 3 and extend in communication with the bottom portion of the bowl portion 3, thereby defining the water level in the bowl portion 3. A trap pipe 5 having an uppermost dam portion 2, a first water discharge portion 14 formed in the rim portion 12, for discharging cleaning water to the rim portion 12 and forming a swirl flow on the filth receiving surface, The second water discharge part 15 is formed on the filth receiving surface 18 below the one water discharge part 14 and forms a flow for discharging the wash water to the water stored in the bowl part 3 and stirring the wash water in the bowl part 3 up and down. A first water passage 16 for supplying cleaning water to the first water discharger 14, and a second water discharger In the flush toilet 10 having the second water passage 17 for supplying the wash water to the dam 5, the dam portion 2 of the trap pipe is provided with a stored water level changing means for changing the stored water level of the bowl portion. The stored water level changing means sets the stored water level in the bowl part 3 to a higher water level (A) than the second water discharge part 15 before the start of cleaning, and immediately after the start of cleaning, the stored water level in the bowl part 3 The water level is controlled to be lower than the second water discharger 15 (B). In the present embodiment configured as described above, since the second water discharger 15 is present in the stored water in the bowl 3 at the time of excretion of filth before the start of cleaning, the filth and the like are not attached, and the second water discharger It is possible to prevent filth from entering the portion 15 and remaining. Since it is possible to prevent the second water discharge portion 15 from being contaminated with dirt and the like, it is possible to prevent the second water discharger 15 from being cleaned, so that it can be cleaned with a smaller amount of cleaning water compared to the conventional one, thereby achieving further water saving. it can. Further, immediately after the start of cleaning, the second water discharger 15 exists in the air higher than the water level of the water stored in the bowl unit 3, so the water stored in the bowl unit 3 is washed by the cleaning water discharged from the second water discharger 15. Can be stirred up and down, and improvement in washing performance and water saving can be achieved at the same time.

  In the above-described embodiment, preferably, the stored water level changing means sets the stored water level of the bowl unit 3 to a lower water level (B) than the second water discharging unit 15 before the cleaning water is discharged from the second water discharging unit 15. ). In the present embodiment configured as described above, before the wash water is discharged from the second water discharger 15, the second water discharger 15 exists in the air higher than the water level stored in the bowl 3, With the cleaning water discharged from the second water discharger 15, the water stored in the bowl 3 can be stirred up and down, and improvement in cleaning performance and water saving can be achieved at the same time.

DESCRIPTION OF SYMBOLS 1 ... Crown 2 ... Weir part 3 ... Bowl part 4 ... Reservoir 5 ... Trap pipe line 6 ... Operation means 7 ... Weir part drive means 8 ... Water supply apparatus 9 ... Control means 10 ... Toilet bowl 11 ... Drain pipe 12 ... Rim part DESCRIPTION OF SYMBOLS 13 ... Zettet spout 14 ... 1st water discharge part 15 ... 2nd water discharge part 16 ... 1st water flow path 17 ... 2nd water flow path 18 ... Soil receiving surface A ... Initial stored water level B ... Reservoir lower than 2nd water discharge part Water level

Claims (2)

A flush toilet that flushes and discharges filth by washing the toilet with wash water,
A bowl portion having a bowl-shaped filth receiving surface, and a rim portion in which an inner wall surface of the upper edge protrudes inward,
A trap line having an uppermost weir portion that extends in communication with the bottom portion of the bowl portion so as to discharge the filth in the bowl portion, and defines the water level of the bowl portion;
A first water discharge portion that is formed on the rim portion, discharges wash water to the rim portion, and forms a swirl flow on the waste receiving surface;
A second water discharge portion formed on the waste receiving surface below the first water discharge portion, for discharging the wash water into the water stored in the bowl portion, and forming a flow for stirring the wash water in the bowl portion up and down; ,
A first water passage for supplying cleaning water to the first water discharger;
In the flush toilet having a second water passage for supplying wash water to the second water discharger,
The weir part of the trap pipe is provided with a stored water level changing means for changing the stored water level of the bowl part,
The stored water level changing means sets the stored water level in the bowl part higher than the second water discharge part before the start of cleaning, and immediately after the cleaning starts, sets the stored water level in the bowl part to the second water discharge part. A flush toilet that is controlled to a lower water level.   The stored water level changing means is controlled so that the stored water level of the bowl portion is lower than that of the second water discharge portion before the wash water is discharged from the second water discharge portion. The flush toilet according to claim 1.