JP6006037B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet bowl.

  Patent document 1 is disclosing the conventional flush toilet bowl. This flush toilet includes a toilet body and a toilet cleaning device. The toilet body has a toilet bowl and a toilet drainage channel communicating with the downstream side of the toilet bowl. The toilet body is an upper peripheral edge on the right side of the toilet bowl (on the right side from the rear side of the toilet bowl on which the washing tank is placed to the tip), and the flush water is applied to the substantially central portion in the front-rear direction of the toilet bowl. It has the 1st water outlet which discharges water. The first water outlet is open forward. The wash water discharged from the first water discharge port forms a swirling flow that swirls counterclockwise in the toilet bowl in a plan view. Moreover, the toilet bowl main body has the 2nd water outlet which discharges washing water to the upper peripheral part of the left rear part. The second water outlet is open to the right. The wash water discharged from the second water outlet can merge with the wash water discharged from the first water outlet to weaken the momentum of the swirling flow. Thereby, the centrifugal force of the swirling flow in the toilet bowl can be reduced, the spread of the waste in the toilet bowl can be suppressed, and the waste can be discharged well.

JP 2011-157738 A

  However, the flush toilet of Patent Document 1 considers the flow rate of the wash water discharged from the first water discharge port and the flow rate of the wash water discharged from the second water discharge port (the amount of water flowing per unit time: the same applies hereinafter) and the water discharge start time. It was n’t. For this reason, this flush toilet bowl discharges a large amount of flush water from the second outlet immediately after the start of toilet flushing. In addition, the swirl flow in the toilet bowl is not formed by the wash water discharged from the first spout at the beginning of toilet flushing, and the wash water discharged from the second spout is washed from the first spout. It flows into the toilet drainage channel without joining the water. In this case, the wash water discharged from the second water discharge port cannot be effectively used for toilet cleaning.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the flush toilet bowl which can perform toilet bowl washing | cleaning efficiently.

The flush toilet of the present invention is a toilet bowl,
A toilet drainage channel communicating with the downstream side of the toilet bowl,
A first spout that opens at the upper peripheral edge of the toilet bowl and discharges flush water that forms a swirling flow that rotates in the toilet bowl in plan view;
And it opens to the upper periphery of the toilet bowl part, and the wash water discharged from the first water outlet merges on the downstream side where the surface of the toilet bowl part flows and flows downward toward the toilet drainage channel. A toilet body having a second water outlet for discharging the washing water forming
A toilet cleaning device for supplying cleaning water to the first water outlet and the second water outlet;
The toilet flushing apparatus starts to supply cleaning water to the first water outlet and the second water outlet, and the cleaning water discharged from the first water outlet flows on the surface of the toilet bowl portion and the second water outlet. When the wash water discharged from the first water discharge port reaches the merge portion, the water is discharged from the second water discharge port until the flow reaches the merge portion that forms the downward flow discharged from the water. Washing water having a flow rate smaller than the set flow rate is discharged from the second water discharge port .

  This flush toilet bowl has a set flow rate (for example, the maximum flow rate that can be discharged from the second water outlet) when the wash water discharged from the first water outlet reaches the junction. The water has increased. That is, this flush toilet does not discharge a large amount of washing water from the second outlet before the washing water discharged from the first outlet reaches the junction. For this reason, this flush toilet bowl can suppress the water discharge of the wash water from the 2nd water outlet which cannot be used effectively for toilet bowl washing | cleaning, and can attain water saving. In addition, since the flushing water discharged from the second spout increases to the set flow rate (maximum flow rate) when the wash water spouted from the first spout reaches the junction, the flush toilet increases from the second spout. The discharged wash water merges with the wash water discharged from the first outlet, and a downward flow toward the toilet drainage channel can be reliably formed.

Moreover, the other flush toilet bowl of the present invention comprises a toilet bowl,
A toilet drainage channel communicating with the downstream side of the toilet bowl,
A first spout that opens at the upper peripheral edge of the toilet bowl and discharges flush water that forms a swirling flow that rotates in the toilet bowl in plan view;
And it opens to the upper periphery of the toilet bowl part, and the wash water discharged from the first water outlet merges on the downstream side where the surface of the toilet bowl part flows and flows downward toward the toilet drainage channel. A toilet body having a second water outlet for discharging the washing water forming
The start of water discharge from the second water outlet is delayed from the start of water discharge from the first water outlet, and the water discharged from the first water outlet is discharged from the second water outlet. The water discharged from the second water discharge port when the cleaning water discharged from the first water discharge port reaches the merge portion until reaching the merge portion where the wash water forming the downward flow is formed. A toilet cleaning device is provided that supplies cleaning water to the first water outlet and the second water outlet so as to discharge cleaning water having a flow rate lower than the flow rate from the second water outlet. .

  This flush toilet can delay the start of water discharge from the second water outlet than the start of water discharge from the first water outlet. For this reason, the wash water discharged from the first water discharge port can be discharged from the second water discharge port in accordance with the timing when the water reaches the junction where the wash water discharged from the second water discharge port merges. . If it does in this way, since it does not spout wash water from the 2nd spout at the beginning which started toilet flushing, it can control spout of the wash water from the 2nd spout which cannot be used effectively for toilet flushing, It can save water. Moreover, since this flush toilet bowl can discharge a large amount of washing water from the second outlet when the washing water discharged from the first outlet reaches the junction, the washing discharged from the second outlet It is possible to reliably form a downward flow toward the toilet drainage channel by the water joining the wash water discharged from the first water outlet.

  Therefore, these flush toilet bowls of the present invention can efficiently perform toilet cleaning.

It is a flush toilet bowl of Example 1, Comprising: It is sectional drawing which shows the flow of the washing water immediately after toilet bowl washing | cleaning start. It is a right-and-left center sectional view of the flush toilet bowl of Example 1. It is a flush toilet bowl of Example 1, Comprising: It is sectional drawing which shows the flow just before the toilet water washing | cleaning started and the wash water discharged from the 1st water discharge port and the wash water discharged from the 2nd water discharge port merge. It is a flush toilet bowl of Example 1, Comprising: It is sectional drawing which shows the flow after the toilet bowl washing | cleaning started and the wash water discharged from the 1st water discharge port and the wash water discharged from the 2nd water discharge port merged. It is sectional drawing which shows the flush toilet bowl of Example 2.

  A preferred embodiment of the present invention will be described.

  The wash water discharged from the first water discharge port changes to a downward flow by joining the wash water discharged from the second water discharge port, and may form a main flow flowing into the toilet drainage channel. In this case, the wash water discharged from the first water discharge port is intended to wash the surface of the toilet bowl, and mainly flows in the turning direction. For this reason, the flow of the wash water discharged from the first water discharge port is changed downward in the toilet drainage channel direction by the wash water discharged from the second water discharge port joining the wash water discharged from the first water discharge port. The main flow of washing water flowing into the toilet drainage channel from one direction can be formed. Therefore, this flush toilet bowl can convey filth in the toilet drainage channel well and can be discharged out of the toilet body via the toilet drainage channel.

  The toilet body has a water supply chamber in which the second water discharge port is opened toward the toilet bowl, and the toilet bowl cleaning device may have a water supply pipe that is disposed in the water supply chamber and through which the wash water flows out. . In this case, the timing at which the water supply chamber becomes a buffer space and the wash water discharged from the second water discharge port increases to the set flow rate can be delayed, or the water discharge start time from the second water discharge port can be delayed.

  The water supply pipe can discharge washing water in a direction substantially opposite to the second water discharge port. In this case, it is possible to prevent the wash water flowing out from the water supply pipe from being discharged directly from the second water discharge port into the toilet bowl. Thereby, the water discharge start time from the second water discharge port can be delayed.

The second water outlet can have an opening area larger than the outlet of the water supply pipe. In this case, the flow rate of the wash water discharged from the second water discharge port is slower than the flow rate of the wash water flowing out from the outlet of the water supply pipe, and can be prevented from being scattered in the toilet bowl.

  Next, Example 1 and 2 which actualized the flush toilet bowl of this invention are demonstrated, referring drawings.

<Example 1>
The flush toilet bowl of Example 1 is provided with the toilet bowl main body 10, the toilet bowl washing | cleaning apparatus 20, and the toilet seat apparatus 30, as shown in FIGS. The toilet body 10 includes a toilet bowl 11, a toilet drainage channel 12, a first water outlet 13, and a second water outlet 14. The toilet bowl cleaning device 20 includes a cleaning tank 21, a pump 22, and a distribution water supply pipe 23. The toilet seat device 30 includes a toilet seat device body 31 that is placed and fixed on the upper surface of the toilet body 10, and a toilet seat and a toilet lid 32 that are pivotally supported on the front portion of the toilet seat device body 31.

  The toilet body 10 has a peripheral wall 15 extending downward from the upper surface periphery. The toilet bowl body 10 forms a toilet bowl 11 on the front side (lower side in FIG. 1) in the peripheral wall 15, and the toilet bowl cleaning device 20 and the like below and behind the toilet bowl 11 (upward in FIG. 1). Is formed. The toilet drainage channel 12 is continuous to the downstream side of the toilet bowl 11 and extends behind the toilet bowl 11. A sealed part is formed by the lower part of the toilet bowl 11 and the toilet drainage channel 12 on the upstream side. The toilet drainage channel 12 has a downstream outlet 12 </ b> A disposed in the storage space S behind the toilet bowl 11. The toilet drainage channel 12 is drawn out to the floor surface F through the drainage connection pipe 40 in the storage space S behind the toilet bowl 11, and the discharge port 12A communicates with the inlet of the drainage pipe 50 opened upward. ing.

  The toilet body 10 has a first water supply chamber 16 provided outside the upper peripheral edge on the left side (left side in FIG. 1) of the toilet bowl 11 and inside the peripheral wall 15. The first water supply chamber 16 extends rearward (upward in FIG. 1) from the substantially central portion of the toilet bowl 11 in the front-rear direction. A distal end portion of a later-described left side water supply pipe 23 </ b> L of the distribution water supply pipe 23 is inserted from the rear of the first water supply chamber 16 and disposed in the first water supply chamber 16. The first water discharge port 13 is opened at the front end of the first water supply chamber 16. That is, the 1st spout 13 is the upper periphery of the left side of the toilet bowl part 11, Comprising: It opens in the approximate center part of the front-back direction of the toilet bowl part 11 toward the front (downward direction in FIG. 1). The toilet body 10 has a rim water passage 18 formed on the upper peripheral edge continuously to the bottom surface of the first water outlet 13.

  The toilet body 10 has a second water supply chamber 17 provided outside the upper peripheral portion of the right rear portion (upper right portion in FIG. 1) of the toilet bowl portion 11 and inside the peripheral wall portion 15. A distal end portion of a later-described right side water supply pipe 23 </ b> R of the distribution water supply pipe 23 is inserted from the rear of the second water supply chamber 17 and is disposed in the second water supply chamber 17. The second water outlet 14 is opened at the rear of the side surface of the second water supply chamber 17 on the toilet bowl 11 side. That is, the 2nd spout 14 is the upper periphery of the right rear part of the toilet bowl part 11, Comprising: It opens facing the left direction (left direction in FIG. 1).

  The washing tank 21 is disposed in the storage space S and below and behind the toilet bowl 11. The pump 22 is disposed in the storage space S and above the washing tank 21 behind the toilet bowl. The pump 22 has an inlet connected to the upper end of the cleaning tank 21 via a connecting pipe 24. Further, the pump 22 connects the discharge pipe 25 to the distribution water supply pipe 23. The distribution water supply pipe 23 has an upstream pipe 23A connected to the discharge pipe 25 of the pump 22, and a left side water supply pipe 23L and a right side water supply pipe 23R branched from the upstream pipe 23A.

  The left side water supply pipe 23L of the distribution water supply pipe 23 has an outlet 23X having an open end. For this reason, the wash water flowing out from the outlet 23X of the left water supply pipe 23L flows into the first water supply chamber 16 toward the first water outlet 13 and is discharged from the first water outlet 13. The wash water discharged from the first water discharge port 13 flows along the rim water passage 18 and forms a swirl flow that swirls counterclockwise in the toilet bowl 11 in a plan view.

  The right side water supply pipe 23 </ b> R of the distribution water supply pipe 23 is closed at the tip, and has an outlet 23 </ b> Y that opens on the side of the peripheral wall 15 of the second water supply chamber 17. For this reason, the outflow port 23Y of the right side water supply pipe 23R flows out the washing water in a direction substantially opposite to the second water discharge port 14. The wash water that has flowed out from the outlet 23Y of the right side water supply pipe 23R is discharged from the second water discharge port 14 while the second water supply chamber 17 is filled. The wash water discharged from the second water outlet 14 merges with the wash water discharged from the first water outlet 13 at the junction Z (see FIG. 4) to form a downward flow toward the toilet drainage channel 12. The second water discharge port 14 has an opening area larger than the outlet 23Y of the right water supply pipe 23R. For this reason, the flow rate of the wash water discharged from the second water discharge port 14 becomes slow, and scattering such as when the wash water discharged from the first water discharge port 13 merges with the junction Z in the toilet bowl can be prevented. .

  Next, how the wash water flows when toilet flushing of the flush toilet having such a configuration is executed will be described.

  In this flush toilet, when a toilet flush switch provided on a remote controller (not shown) is operated, the pump 22 is driven for a set time, and the flush water stored in the flush tank 21 is discharged through the distribution water supply pipe 23 through the first discharge pipe 23. Water is discharged from the water outlet 13 and the second water outlet 14. Thereby, this flush toilet bowl performs toilet flushing.

  In this flush toilet, since the outlet 23X of the left water supply pipe 23L of the distribution water supply pipe 23 flows out of the wash water toward the first water discharge port 13, immediately after the toilet flushing is started, as shown in FIG. Wash water can be discharged from the first water discharge port 13 along the rim water passage 18. On the other hand, in this flush toilet, since the outlet 23Y of the right side water supply pipe 23R of the distribution water supply pipe 23 flows out of the washing water in a direction substantially opposite to the second water discharge port 14, immediately after the toilet flushing is started, the second The washing water is not discharged into the toilet bowl 11 from the water outlet 14. That is, since the outlet 23Y of the right side water supply pipe 23R flows out the washing water in a direction substantially opposite to the second water outlet 14, the washing water flowing out from the outlet 23Y of the right side water supply pipe 23R directly becomes the second outlet. It is possible to prevent water from being discharged into the toilet bowl 11 from 14 and to delay the water discharge start time from the second water discharge port 14.

  Thereafter, with a lapse of a short time, as shown in FIG. 3, the wash water discharged from the first water discharge port 13 flows along the rim water passage 18 of the toilet bowl 11 to the right side of the toilet bowl 11. On the other hand, the wash water that has flowed out from the outlet 23Y of the right side water supply pipe 23R starts to be gradually discharged from the second outlet 14. The cleaning water discharged from the second water outlet 14 gradually increases until the inside of the second water supply chamber 17 is filled with the cleaning water flowing out from the outlet 23Y of the right water supply pipe 23R. Thus, the second water supply chamber 17 becomes a buffer space, and the wash water discharged from the second water discharge port 14 increases to a set flow rate (maximum flow rate, for example, 25 L / min or more, preferably 35 L / min or more). The timing can be delayed or the water discharge start time from the second water discharge port 14 can be delayed.

  Thereafter, as shown in FIG. 4, when the wash water discharged from the first water discharge port 13 reaches the junction Z, the wash water that flows out from the outlet 23 </ b> Y of the right water supply pipe 23 </ b> R is used in the second water supply chamber 17. Becomes full, the wash water discharged from the second water discharge port 14 is increased, and the set water (maximum flow rate) of the wash water is discharged from the second water discharge port 14. That is, this flush toilet does not discharge a large amount of washing water from the second outlet 14 before the washing water discharged from the first outlet 13 reaches the junction Z. For this reason, this flush toilet bowl can suppress the water discharge of the wash water from the 2nd water outlet 14 which cannot be utilized effectively for toilet bowl washing | cleaning, and can attain water saving. In addition, since the flushing water discharged from the second water discharge port 14 increases to the set flow rate (maximum flow rate) when the wash water discharged from the first water discharge port 13 reaches the junction Z, the second flush toilet increases the second flow rate. The wash water discharged from the water discharge port 14 can merge with the wash water discharged from the first water discharge port 13 to reliably form a downward flow toward the toilet drainage channel 12.

  Therefore, the flush toilet of Example 1 can perform toilet cleaning efficiently.

  The wash water discharged from the first water discharge port 13 is changed to a downward flow by joining the wash water discharged from the second water discharge port 14 to form a main flow flowing into the toilet drainage channel 12. That is, the wash water spouted from the first spout 13 is intended to wash the surface of the toilet bowl 11 and mainly flows in the swirl direction, and thus spouted from the second spout 14. When the wash water merges with the wash water discharged from the first spout 13, the flow of the wash water discharged from the first spout 13 is changed downward in the direction of the toilet drainage 12, and the toilet drainage 12 from one direction. A flow of wash water flowing into the water can be formed. Therefore, this flush toilet can transport filth into the toilet drainage channel 12 and can be discharged out of the toilet body 10 through the toilet drainage channel 12.

  A part of the wash water spouted from the first spout 13 where the wash water spouted from the second spout 14 merges does not flow into the toilet drainage channel 12 but swirls counterclockwise in the toilet bowl 11 Form. When the set time elapses, the driving of the pump 22 is stopped and the toilet cleaning is finished.

<Example 2>
As shown in FIG. 5, the flush toilet of Example 2 connects the distribution water supply pipe 123 of the toilet bowl cleaning device 120 directly to a water supply source (for example, a water pipe), and uses the water supply pressure of the water supply source. The difference from the first embodiment is that cleaning water is supplied to the first water outlet 13 and the second water outlet 14. The same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the toilet bowl cleaning device 120, the upstream end of the upstream pipe 123A of the distribution water supply pipe 123 is connected to a stopcock (not shown) connected to a water pipe drawn out in a room where the flush toilet bowl is installed. This toilet flushing device 120 has on-off valves 124 and 125 provided in a left water supply pipe 123L and a right water supply pipe 123R that are branched from an upstream pipe 123A, respectively. These on-off valves 124 and 125 can control the opening and closing timing.

  Next, the operation of the toilet flushing device 120 and how the wash water flows when the toilet flushing of the flush toilet equipped with the toilet flushing device 120 having such a configuration is executed will be described.

  In this flush toilet, when a toilet flushing switch provided in a remote controller (not shown) is operated, first, the on-off valve 124 provided in the left water supply pipe 123L is opened. For this reason, the flush toilet flushes the wash water from the first water discharge port 13 along the rim water passage 18 and flows toward the junction Z with the wash water discharged from the second water discharge port 14.

  Then, after the set time has elapsed, the on-off valve 125 provided in the right water supply pipe 23R is opened. Thereby, the water discharge start time from the second water discharge port 14 can be delayed. That is, the wash water can be discharged from the second water discharge port 14 in accordance with the timing at which the wash water discharged from the first water discharge port 13 reaches the junction Z where the wash water discharged from the second water discharge port 14 joins. . Thus, since this flush toilet bowl does not discharge flush water from the second outlet 14 immediately after the toilet flushing is started, the flush water from the second outlet 14 that cannot be effectively used for toilet flushing. Water discharge can be suppressed and water saving can be achieved. Moreover, since this flush toilet bowl can discharge a large amount of wash water from the second outlet 14 when the cleaning water discharged from the first outlet 13 reaches the junction Z, the second outlet The wash water discharged from 14 merges with the wash water discharged from the first water discharge port 13 to reliably form a downward flow toward the toilet drainage channel 12.

  Therefore, the flush toilet of Example 2 can efficiently perform toilet cleaning.

  Also in this flush toilet, the wash water discharged from the first outlet 13 is changed to a downward flow by merging with the wash water discharged from the second outlet 14, and the main flow flowing into the toilet drainage channel 12 is changed. Form. That is, the wash water spouted from the first spout 13 is intended to wash the surface of the toilet bowl 11 and mainly flows in the swirl direction, and thus spouted from the second spout 14. When the wash water merges with the wash water discharged from the first spout 13, the flow of the wash water discharged from the first spout 13 is changed downward in the direction of the toilet drainage 12, and the toilet drainage 12 from one direction. A flow of wash water flowing into the water can be formed. Therefore, this flush toilet can transport filth into the toilet drainage channel 12 and can be discharged out of the toilet body 10 through the toilet drainage channel 12.

  A part of the wash water spouted from the first spout 13 where the wash water spouted from the second spout 14 merges does not flow into the toilet drainage channel 12 but swirls counterclockwise in the toilet bowl 11 Form. When the set time elapses, the on-off valve provided on the left water supply pipe 23L and the on-off valve provided on the right water supply pipe 23R are closed, and toilet flushing is completed.

The present invention is not limited to the first and second embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Example 1 and 2, although the opening area of the 2nd water discharge port was made larger than the outflow port of the right side water supply pipe, the same opening area may be sufficient.
(2) In Examples 1 and 2, the first water outlet is arranged at the left side of the toilet body and the substantially central part in the front-rear direction, and the second water outlet is arranged at the right rear part of the toilet body. The arrangement may be appropriately changed according to the shape and positional relationship of the road.
(3) In Example 1, although the washing tank was arrange | positioned in the storage space formed in the toilet bowl main body, you may arrange | position a washing tank in other places, such as arrange | positioning on the rear part upper surface of a toilet bowl main body.
(4) In Example 2, although the 2nd water supply chamber was provided, it is not necessary to provide a 2nd water supply chamber.
(5) In the second embodiment, the outlet of the right water supply pipe is opened to the peripheral wall portion side of the second water supply chamber, and the washing water flows out in a direction substantially opposite to the second water discharge port. The outlet may be opened toward the second water outlet.

DESCRIPTION OF SYMBOLS 10 ... Toilet body 11 ... Toilet bowl part 12 ... Toilet drain 13: 1st water outlet 14 ... 2nd water outlet 17 ... 2nd water supply room (water supply room)
20, 120 ... Toilet bowl cleaning device 23R, 123R ... Right side water supply pipe (water supply pipe)
23Y ... Outlet Z ... Junction

Claims (6)

Toilet bowl,
A toilet drainage channel communicating with the downstream side of the toilet bowl,
A first spout that opens at the upper peripheral edge of the toilet bowl and discharges flush water that forms a swirling flow that rotates in the toilet bowl in plan view;
And it opens to the upper periphery of the toilet bowl part, and the wash water discharged from the first water outlet merges on the downstream side where the surface of the toilet bowl part flows and flows downward toward the toilet drainage channel. A toilet body having a second water outlet for discharging the washing water forming
A toilet cleaning device for supplying cleaning water to the first water outlet and the second water outlet;
The toilet flushing apparatus starts to supply cleaning water to the first water outlet and the second water outlet, and the cleaning water discharged from the first water outlet flows on the surface of the toilet bowl portion and the second water outlet. When the wash water discharged from the first water discharge port reaches the merge portion, the water is discharged from the second water discharge port until the flow reaches the merge portion that forms the downward flow discharged from the water. A flush toilet , wherein a flush water having a flow rate smaller than a set flow rate is discharged from the second water outlet . Toilet bowl,
A toilet drainage channel communicating with the downstream side of the toilet bowl,
A first spout that opens at the upper peripheral edge of the toilet bowl and discharges flush water that forms a swirling flow that rotates in the toilet bowl in plan view;
And it opens to the upper periphery of the toilet bowl part, and the wash water discharged from the first water outlet merges on the downstream side where the surface of the toilet bowl part flows and flows downward toward the toilet drainage channel. A toilet body having a second water outlet for discharging the washing water forming
The start of water discharge from the second water outlet is delayed from the start of water discharge from the first water outlet, and the water discharged from the first water outlet is discharged from the second water outlet. The water discharged from the second water discharge port when the cleaning water discharged from the first water discharge port reaches the merge portion until reaching the merge portion where the wash water forming the downward flow is formed. A toilet cleaning device is provided that supplies cleaning water to the first water outlet and the second water outlet so as to discharge cleaning water having a flow rate lower than the flow rate from the second water outlet. Flush toilet bowl.   Wash water spouted from the first spout changes to a downward flow by merging with the wash water spouted from the second spout and forms a main flow that flows into the toilet drainage channel. The flush toilet bowl according to claim 1 or 2. The toilet body has a water supply chamber in which the second water outlet opens toward the toilet bowl,
The flush toilet according to any one of claims 1 to 3, wherein the toilet bowl cleaning device includes a water supply pipe that is disposed in the water supply chamber and from which flush water flows out.   The flush toilet according to claim 4, wherein the water supply pipe discharges wash water in a direction substantially opposite to the second water discharge port.   The flush toilet according to claim 4 or 5, wherein the second water outlet has an opening area larger than an outlet of the water supply pipe.

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