JP2006291451A - Flush closet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush closet bowl which reduces the amount of water supply needed for restoring the water level to its initial level after flushing. <P>SOLUTION: The flush closet bowl 1 comprises: a bowl part 2 having a jet hole 6 and a trap entrance; a trap conduit for communicating the trap entrance with a drain path; a rim part 4 for allowing the flush water to flow down to the bowl part 2; a jet flush water tank 8 for storing the flush water for the jet hole 6; a jet drain valve 9 for supplying the flush water to the jet hole 6 and stopping it; a jet water guide path 10 for guiding the flush water from the drain valve 9 to the jet hole 6; a rim flush water tank 11 for storing the flush water for the rim part 4; a rim drain valve 12 for supplying the flush water to the rim part 4 and stopping it; and a rim water guide path 13 for guiding the flush water from the rim drain valve 12 to the rim part 2. The jet water guide path 10 has a substantially horizontal pipe line having a ceiling part which is substantially as high as an upper end part of the trap entrance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a flush toilet bowl that performs washing by supplying washing water stored in a washing water tank.

  In the flush toilet, a siphon type having a jet hole has been conventionally employed in order to quickly clean the bowl and discharge waste (see, for example, Patent Document 1). As shown in FIG. 7, the flush toilet according to Patent Document 1 has a flush water tank 61 and a toilet body 60 integrated with each other to reduce the height. The flush water tank 61 incorporates a drain valve 61a and a rim water supply pipe 61b having a flow path connected to the rim water passage 60b. A jet water flow path 60d is provided to guide the cleaning water from the position directly below the drain valve 61a provided at the bottom of the cleaning water tank 61 to the jet hole 60g. The jet water flow channel 60d is formed in a substantially horizontal horizontal tubular shape, and the height position A of the ceiling portion is lower than the initial water storage position WL of the bowl portion 60a, and the height position of the bottom portion of the jet water flow channel 60d. B is arranged at a position higher than the upper end position Y of the trap inlet X.

  When the user performs a predetermined cleaning operation, the drain valve 61a is pulled upward by a drain valve operating mechanism (not shown) to be opened, and the cleaning water in the cleaning water tank 61 flows into the jet water flow path 60d. Then, the washing water is discharged from the jet hole 60g. Then, the trap portion 60c is filled with the washing water and a siphon action is generated, whereby the filth in the bowl portion 60a is discharged together with the washing water to the drainage path (not shown) via the trap portion 60c.

  When the siphoning action occurs in the trap part 60c and the water level in the bowl part 60a falls and becomes lower than the upper end part Y of the trap inlet X, air enters the trap part 60c from the trap inlet X and the siphoning action. Disappears and the discharge of filth is completed. Thereafter, in order to raise the water level in the bowl part 60a to the initial stored water level WL, the supply of cleaning water is continued, and when the water level in the bowl part 60a reaches the initial stored water position WL, the supply of cleaning water is automatically stopped. Is done.

JP 7-180202 A

  In the case of the flush toilet described in Patent Document 1, as shown in FIG. 7, the water level in the bowl portion 60 a at the time when the siphon action disappears is at the height position of the upper end portion Y of the trap inlet X. Accordingly, the amount of cleaning water to be supplied before the water level of the bowl portion 60a returns to the initial stored water level WL is essentially the amount of water supplied to the bowl portion 60a and the trap portion 60c necessary for cleaning the toilet body 60. In addition, it is necessary to supply an extra volume of cleaning water corresponding to the internal volume of the jet water flow path 60d, that is, an amount of cleaning water corresponding to the hatching region H10 in FIG. It is difficult to plan.

  Moreover, when forming the jet water flow path 60d in the manufacturing process of the flush toilet described in Patent Document 1, as shown in FIG. 8, a part of the jet water flow path 60d is formed by using the wall part forming the bowl part 60a. Forming. For this reason, the cavity part 60v which protruded in the bowl part 60a direction exists between the ceiling part of the jet water flow path 60d, and the bowl part 60a. Air remains in the hollow portion 60v even when the flush toilet is in a standby state and the accumulated water in the bowl portion 60a maintains the initial accumulated water level WL. For this reason, when cleaning is started, the air in the cavity 60v may be discharged together with the cleaning water discharged from the jet hole 60g to the bowl 60a via the jet water flow path 60d, and the cleaning action deteriorates. Or may adversely affect the siphon action.

  The problem to be solved by the present invention is to provide a flush toilet capable of reducing the amount of water supply required to return to the original initial water level after completion of washing.

The flush toilet of the present invention is a flush toilet that supplies and flushes wash water stored in a wash water tank,
A bowl portion having a jet hole at the bottom for discharging washing water;
In order to generate a siphon action and discharge the accumulated water in the bowl part to the drainage path, a trap pipe that is connected in a mountain shape by connecting the trap inlet opened at the bottom of the bowl part and the drainage path;
A cleaning water tank for jets for storing cleaning water to be supplied to the jet holes;
A jet drain valve provided in the jet cleaning water tank for supplying and stopping the cleaning water to the jet hole,
A jet conduit for guiding the wash water that has passed through the jet drain valve to the jet hole;
With
The jet water conduit has a falling conduit provided directly below the jet drain valve, and a substantially horizontal horizontal conduit connected to the falling conduit,
The ceiling portion of the inner peripheral surface of the horizontal pulling conduit is arranged at a low position below the upper end portion of the trap inlet.

  With such a configuration, since the ceiling portion of the inner peripheral surface of the horizontal pulling pipe is at a low position below the upper end of the trap inlet, the washing water in the bowl is discharged and siphon action in the trap pipe is performed. Even at the time of disappearance, the washing water remains in the horizontal pulling conduit of the jet conduit for water to the same level as the upper end of the trap inlet. In other words, even when the siphon disappears, a relatively large amount of washing water can remain in the horizontal pulling conduit of the jet conduit. Therefore, after the cleaning is finished, the cleaning water may be supplied in an amount that fills the space where there is no residual cleaning water, except for the inside of the horizontal conduit, in the jet conduit. For this reason, it is possible to reduce the amount of water supply required after the siphon action disappears and before returning to the initial water level.

  On the other hand, in order to prevent air from accumulating in the jet conduit, it is desirable that the ceiling portion of the inner peripheral surface of the jet conduit be formed as a continuous surface without unevenness along the flow direction of the cleaning water. . With such a configuration, there is no place where air that has entered the jet conduit along the flow of cleaning water gathers, and no air is stored in the jet conduit. It is possible to eliminate the deterioration of the cleaning action and the adverse effect on the siphon action caused by residual air in the water channel.

  According to the present invention, in the flush toilet, it is possible to reduce the amount of water supply required for returning to the original initial water level after completion of washing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view showing a flush toilet according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along the line BB in FIG. FIG. 5 is a vertical cross-sectional view showing another embodiment relating to the water conduit for jetting.

  As shown in FIGS. 1 to 3, the flush toilet 1 of the present embodiment includes a bowl portion 2 in which a jet hole 6 for discharging washing water is opened in front of the bottom portion, and a bowl portion 2 by generating a siphon action. A trap pipe 7 formed in a mountain shape by connecting the trap inlet 3 opened at the rear of the bottom of the bowl portion 2 and the drainage path in order to discharge the stored water in the drainage path (not shown). A rim portion 4 provided at the upper edge of the bowl portion 2 for causing the washing water to flow down to the bowl portion 2, a washing water tank for jet 8 for storing the washing water supplied to the jet holes 6, and a jet A jet drain valve 9 provided in the jet wash water tank 8 for supplying and stopping the wash water to the hole 6, and a jet guide for guiding the wash water that has passed through the jet drain valve 9 to the jet hole 6. The wash water supplied to the water channel 10 and the rim 4 is stored. The rim cleaning water tank 11, the rim drain valve 12 provided in the rim cleaning water tank 11 to supply and stop the cleaning water to the rim portion 4, and the cleaning that has passed through the rim drain valve 12 A rim water guide passage 13 for guiding water to the rim portion 2 is provided.

  The bowl part 2, the rim part 4, the jet hole 6, the trap pipe 7, the rim cleaning water tank 11, the jet cleaning water tank 8, the rim water guiding path 13 and the jet water guiding path 10 are integrated with ceramics. Is formed. The bowl portion 2 is formed at a front portion of the flush toilet 1, a rim portion 4 is formed at an upper edge portion thereof, and a jet opened toward the rear of the flush toilet 1 at the bottom portion thereof. A hole 6 is formed. Further, at the bottom of the bowl portion 2, a trap inlet 3 communicating with a trap pipe 7 extending rearward is opened at a position facing the jet hole 6.

  The rim portion 4 is formed as a shelf-like water channel at the upper edge of the bowl portion 2. The washing water supplied to the rim part 4 flows down spirally on the upper surface of the bowl part 2 while turning along the shelf-like part 4a, and finally flows into the bottom part of the bowl part 2. ing. The trap conduit 7 communicates with the bottom of the bowl portion 2 via the trap inlet 3 and extends in a mountain shape from the bowl portion 2 toward the rear. The trap pipe line 7 extends obliquely upward from the trap inlet 3 at the bottom of the bowl part 2, and hangs vertically downward through a trap top part 7 a having a height L 2 which is the uppermost part in the trap pipe 7. Is formed. The lower end opening 7b of the trap pipe 7 is connected to a drainage path (not shown) piped on the floor where the flush toilet 1 is installed.

  The rim washing water tank 11 is formed in the center of the rear of the flush toilet 1. The rim cleaning water tank 11 has a bottom surface disposed at a height substantially equal to the height L1 of the upper surface of the rim portion 4. A cutout 14 is formed on one side wall surface of the rim cleaning water tank 11 at a height L3 in order to transfer the cleaning water supplied to the rim cleaning water tank 11 to the jet cleaning water tank 8. Has been. When the water level in the rim cleaning water tank 11 becomes higher than the height L3, the cleaning water overflowing from the notch 14 of the rim cleaning water tank 11 flows into the jet cleaning water tank 8 disposed below. It has become.

  On the bottom surface of the rim cleaning water tank 11, a rim drain valve 12 is provided at a position slightly higher than the height L1. A rim conduit 13 is formed below the rim drain valve 12, and the wash water that has passed through the rim drain valve 12 flows into the rim conduit 13. The rim water guide passage 13 is formed so as to extend substantially horizontally from the lower portion of the rim cleaning water tank 11 toward the front bowl portion 2 and branch left and right behind the upper edge portion of the bowl portion 2. Yes. One rim conduit 13 branched to the left and right communicates with the first rim spout 13a, and the other rim conduit 13 communicates with the second rim spout 13b. The first rim spout 13a opens from the side of the bowl part 2 toward the front of the toilet bowl, and the second rim spout 13b is located at the rear side of the bowl part 2 opposite to the first rim spout 13a. Open toward the rear.

  The jet wash water tank 8 is disposed below the rim wash water tank 11 behind the flush toilet 1, and the capacity of the jet wash water tank 8 is larger than the capacity of the rim wash water tank 11. Has been. A jet drain valve 9 is provided at a lower position of the jet wash water tank 8 at a position lower than the height L1 and higher than the height L2 of the trap top portion 7a of the trap conduit 7. The jet drain valve 9 is formed larger than the rim drain valve 12 in order to instantaneously supply a large amount of cleaning water to the jet hole 6. The jet water conduit 10 located below the jet drain valve 9 includes a falling pipe 10v provided immediately below the jet drain valve 9 and a substantially horizontal lateral pulling communicating with the falling pipe 10v. And a pipe line 10h. The wash water that has passed through the jet drain valve 12 flows down the falling conduit 10v located immediately below it, flows into the horizontal pulling conduit 10h, and proceeds forward in the horizontal pulling conduit 10h. After that, the liquid is discharged from the jet hole 6 to the bottom of the bowl portion 2. The jet conduit 10 extends forward from the falling conduit 10v directly below the jet drain valve 9 through the horizontal pull conduit 10h, and is open to the jet hole 6 opened rearward. It is formed to communicate by turning.

  A water supply valve 15 is disposed inside the jet cleaning water tank 8. The water supply valve 15 is configured to supply cleaning water until the water level in the jet cleaning water tank 8 reaches a predetermined water level L4 set lower than the height L1 of the upper surface of the rim portion 4. ing. A water supply pipe 16 extending above the rim cleaning water tank 11 is connected to the water supply valve 15 so as to cross the jet cleaning water tank 8. The cleaning water that has passed through the water supply valve 15 passes through the water supply pipe 16, reaches the upper part of the rim cleaning water tank 11, and flows into the rim cleaning water tank 11 from the outlet 16 a of the water supply pipe 16.

  Further, ball chains 12a and 9a are connected to the rim drain valve 12 and the jet drain valve 9, respectively. When the user of the flush toilet 1 performs a predetermined washing operation after the stool, the ball chain 12a, 9a is pulled upward, and the drain valve 12 and the jet drain valve 9 are opened respectively. A mechanism (not shown) is provided.

  Next, the function of the flush toilet 1 will be described with reference to FIGS. First, in a state where the washing operation is not performed, as shown in FIGS. 2 and 3, the wash water is accumulated in the bowl portion 2 of the flush toilet 1 up to the height L2 of the top portion 7a of the trap conduit 7. Yes. The rim cleaning water tank 11 stores cleaning water up to a height L3, and the jet cleaning water tank 8 stores cleaning water up to a water level of height L4.

  Next, when the user of the flush toilet 1 performs a predetermined washing operation, the ball chain 12a, 9a connected to each drain valve 12, 9 is pulled upward by a drain valve operating mechanism (not shown). As a result, both drain valves 12 and 9 are pulled upward to be opened. Here, the ball chain 9 a connected to the jet drain valve 9 is set longer than the ball chain 12 a connected to the rim drain valve 12. For this reason, when the ball chains 12a and 9a are simultaneously pulled up by the cleaning operation, the rim drain valve 12 is first opened, and then the jet drain valve 9 is opened. Note that the timing at which the drain valves 12 and 9 are released can be arbitrarily set by the length of the ball chains 12a and 9a and the drain valve operating mechanism.

  When the rim drain valve 12 is opened, cleaning water flows from the rim cleaning water tank 11 into the rim water conduit 13, and the cleaning water is discharged from the first rim water outlet 13a and the second rim water outlet 13b, respectively. The The washing water discharged from these water outlets 13a and 13b swirls in the bowl portion 2 while being transmitted through the rim portion 4, and flows into the bottom portion of the bowl portion 2 while washing the exposed surface of the bowl portion 2. Due to the flow of cleaning water from the rim portion 4, dirt and the like floating in the water stored in the bowl portion 2 are collected in the central portion of the bowl portion 2.

  When the jet drain valve 9 is opened with a slight delay from the opening of the rim drain valve 12, the cleaning water in the jet cleaning water tank 8 is a jet constituted by the falling pipe line 10v and the horizontal pulling pipe line 10h. It flows into the water conduit 10 and is discharged from the jet hole 6. When washing water flows into the bowl part 2 from the rim part 4 and the jet hole 6 and the water level in the bowl part 2 rises, the washing water passes through the top part 7a of the trap pipe 7 and is discharged to the drainage path. When the trap pipe 7 is filled with washing water due to this flow, a siphon action occurs, and the filth that has sunk at the bottom of the bowl 2 and the suspended matter collected at the center of the bowl 2 are sucked together with the washing water. And is discharged to the drainage passage through the trap pipe 7.

  If the cleaning water in the rim cleaning water tank 11 is drained through the opened rim drain valve 12 and there is no cleaning water in the rim conduit 13, the rim drain valve 12 will not have buoyancy. The rim drain valve 12 is closed by its own weight. Next, when the cleaning water in the jet cleaning water tank 8 is drained through the opened jet drain valve 9, the jet drain valve 9 is also closed by its own weight. In this embodiment, the capacity of the jet cleaning water tank 8 is larger than the capacity of the rim cleaning water tank 11, and it takes a long time for the cleaning water in the jet cleaning water tank 8 to be discharged. The jet drain valve 9 is closed after being kept open for a longer time than the rim drain valve 12.

  At the time when the siphon action in the trap pipe 7 disappears, the water level L5 of the stored water in the bowl part 2 is lowered to the upper end part 3a of the trap inlet 3, but from the jet hole 6 and the rim part 4 to the bowl part 2 Since the washing water flows in, the water level in the bowl portion 2 gradually rises and returns to the initial water level L2 shown in FIG. Further, new cleaning water is supplied from the water supply to the rim cleaning water tank 11 and the jet cleaning water tank 8 via the water supply valve 15, respectively, and the water levels of the jet cleaning water tank 8 and the rim cleaning water tank 11 are set. When the water reaches a predetermined water level, the water supply valve 15 is closed, thereby completing a series of cleaning processes.

  On the other hand, when the jet drain valve 9 is opened and the water level in the jet cleaning water tank 8 is lowered, the float 15a provided in the water supply valve 15 is lowered, the water supply valve 15 is opened, and water supply is started. When the water supply valve 15 is opened, the cleaning water supplied from the water supply flows out of the outlet 16 a of the water supply pipe 16 through the water supply pipe 16 and flows into the rim cleaning water tank 11. At this time, the cleaning water supplied from the water supply first flows into the rim cleaning water tank 11, so at this time, water supply to the jet cleaning water tank 8 is not performed, and the water level of the jet cleaning water tank 8 is Does not rise.

  When the water level in the rim cleaning water tank 11 rises and reaches a height L3, the cleaning water overflows from the notch 14 and into the jet cleaning water tank 8 disposed below the rim cleaning water tank 11. Inflow. When the cleaning water starts to flow into the jet cleaning water tank 8, the water level in the jet cleaning water tank 8 also starts to rise, and accordingly, the float 15a of the water supply valve 15 also moves upward. When the water level in the jet cleaning water tank 8 rises and reaches the height L4, the water supply valve 15 is closed, the supply of cleaning water from the water supply is stopped, and one cleaning process is completed.

  In this way, while the cleaning water is being supplied through the water supply valve 15, a part of the cleaning water passing through the water supply pipe 16 does not flow out from the outlet 16a, but extends to the extension 16b of the water supply pipe 16. And reaches the overflow pipe 17. The cleaning water that has entered the overflow pipe 17 bypasses the jet drain valve 9 and flows into the bowl portion 2 from the jet hole 6. This washing water is provided to return the water level in the bowl portion 2 to the height L2 after the drain valves 9 and 12 are closed.

  In the flush toilet 1 of the present embodiment, a horizontal pulling conduit 10h that is substantially horizontal is provided in a part of the jet conduit 10 and the height of the ceiling portion 10a on the inner peripheral surface of the horizontal pulling conduit 10h. Are arranged at substantially the same height as the upper end 3 a of the trap inlet 3. Therefore, when the siphon action in the trap conduit 7 disappears, the cleaning water remains in the portion below the ceiling portion 10a of the horizontal pull conduit 10h of the jet conduit 10. For this reason, in order to return the water level after the siphon action disappears to the initial water level L2, the amount of water corresponding to the hatched regions H1 and H2 from L5 to L2 shown in FIG. Accordingly, the hatched areas H1 and H2 are reduced more than the hatched area H10 in the conventional flush toilet shown in FIG. 7, and the amount of water supply required to return to the initial water level L2 can be greatly reduced. it can.

  Although the amount of water required to return to the original initial water level L2 varies depending on the design and structure of the flush toilet, it cannot be generally stated. For example, in the present embodiment corresponding to a siphon jet toilet according to JIS standards. In the case of flush toilet 1, the amount of water required to return to the initial water level L2 after the siphon disappears is about 1.6 liters, and the amount of water supplied in the flush toilet shown in FIG. 7 is about 1.9 liters. Compared to, it can be reduced by about 16%.

  On the other hand, in the flush toilet 1 of the present embodiment, as shown in FIG. 4, the flat ceiling member 18 is attached to the ceiling portion of the inner peripheral surface of the jet conduit 10 so that the entire ceiling portion is washed with water. It is formed with a continuous surface without unevenness along the flow direction. With such a configuration, there is no place where the air that has entered the jet conduit 10 with the flow of the cleaning water gathers, and no air is stored in the jet conduit 10. For this reason, it is possible to eliminate the deterioration of the cleaning action and the adverse effect on the siphon action due to the residual air in the jet conduit 10.

  Further, as a means for eliminating the residual air described above, a jet conduit 10X as shown in FIG. 5 may be used. This water conduit 10X for jets is formed by first forming a ceiling portion 10Xa and a left side portion 10Xb, and then sticking a lower member 10Xc having an L-shaped cross section so as to face them. By forming such a jet conduit 10X, it is possible to eliminate the deterioration of the cleaning action and the adverse effect on the siphon action caused by the residual air, as described above.

  Next, with reference to FIG. 6, the flush toilet 20 which is 2nd Embodiment of this invention is demonstrated. FIG. 6 is a vertical sectional view showing a flush toilet according to a second embodiment of the present invention. In addition, in the flush toilet 20 shown in FIG. 6, about the part provided with the same structure and function as the flush toilet 1 mentioned above, the code | symbol same as the code | symbol shown in FIGS. 1-4 is attached | subjected and description is abbreviate | omitted.

  In the flush toilet 20 shown in FIG. 6, the jet hole 26 for ejecting the wash water supplied from the jet wash water tank 8 through the jet conduit 10 into the bowl part 2 is provided in the bowl part 2. The jet hole 26 is disposed at a position higher than the trap inlet 3. In addition, the ceiling portion 10 a on the inner peripheral surface of the substantially horizontal horizontal conduit 10 h constituting the jet conduit 10 is disposed at substantially the same height as the upper end portion 3 a of the trap inlet 3. Therefore, in this flush toilet 20, the amount of water supply required to return the accumulated water at the bottom of the bowl portion 2 after the siphon action disappears to the initial water level L2 corresponds to the hatching regions H3 and H4 shown in FIG. It is the amount to do.

  As can be seen by comparing the hatching regions H3 and H4 shown in FIG. 6 with the hatching region H10 shown in FIG. 7, the bottom portion of the bowl portion 2 after the siphon action disappears by adopting a configuration like the flush toilet 20. The amount of water supply required to return the stored water to the initial water level L2 is significantly reduced as compared with the conventional flush toilet 70.

  In the flush toilets 1 and 20 of the first and second embodiments, the ceiling portion 10 a on the inner peripheral surface of the substantially horizontal horizontal conduit 10 h constituting the jet conduit 10 is the upper end of the trap inlet 3. Although the flush toilet of the present invention is not limited to these, the inner peripheral surface of the horizontal pulling conduit 10h is positioned lower than the upper end 3a of the trap inlet 3. It is also possible to arrange the ceiling portion 10a, and even in this case, the same effect as described above can be obtained.

  The flush toilet of the present invention can be widely used as equipment materials for toilets in general houses and toilets in public facilities.

It is a top view which shows the flush toilet which is 1st Embodiment of this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is a vertical sectional view showing other embodiments about a water conduit for jets. It is a vertical sectional view showing a flush toilet which is a second embodiment of the present invention. It is a vertical sectional view showing a conventional flush toilet. It is the DD sectional view taken on the line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,20 Flush toilet 2 Bowl part 3 Trap inlet 3a Upper end part 4 Rim part 4a Shelf-shaped part 6,26 Jet hole 7 Trap pipe line 7a Top part 7b Lower end opening part 8 Washing water tank for jets 9 Jet drain valve 9a, 12a Ball chain 10, 10X Jet conduit 10a, 10Xa Ceiling 10h Horizontal pulling conduit 10v Vertical conduit 10Xb Left portion 10Xc Lower member 11 Rim drain valve 13 Rim drain valve 13 Rim conduit 13a First Rim water outlet 13b Second rim water outlet 14 Notch 15 Water supply valve 15a Float 16 Water supply pipe 16a Outlet 16b Extension part 17 Overflow pipe 18 Flat plate member H1, H2, H3, H4 Hatching area

Claims (2)

A flush toilet that supplies and flushes wash water stored in a wash water tank,
A bowl portion having a jet hole at the bottom for discharging washing water;
In order to generate a siphon action and discharge the accumulated water in the bowl part to the drainage path, a trap pipe that is connected in a mountain shape by connecting the trap inlet opened at the bottom of the bowl part and the drainage path;
A cleaning water tank for jets for storing cleaning water to be supplied to the jet holes;
A jet drain valve provided in the jet cleaning water tank for supplying and stopping the cleaning water to the jet hole,
A jet conduit for guiding the wash water that has passed through the jet drain valve to the jet hole;
With
The jet water conduit has a falling conduit provided directly below the jet drain valve, and a substantially horizontal horizontal conduit connected to the falling conduit,
A flush toilet, wherein a ceiling portion of an inner peripheral surface of the horizontal pulling conduit is arranged at a lower position below an upper end portion of the trap inlet.   In order to prevent air from being stored in the jet conduit, the ceiling portion of the inner peripheral surface of the jet conduit is formed as a continuous surface without unevenness along the flow direction of the washing water. The flush toilet according to claim 1.

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