JP2013170426A - Siphon type closet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a siphon type closet bowl in which the quantity of flushing water is reduced by generating siphonage at an earlier stage and water saving can be achieved.SOLUTION: The siphon type closet bowl washing a toilet bowl with the flushing water to discharge filth includes: a bowl part comprising a filth receiving surface and a rim part located at an upper edge; a water discharge part discharging the flushing water to the rim part to wash the filth receiving surface by swirling flow; and a drain trap pipeline connected to the filth receiving surface to discharge the filth along with the flushing water by the siphonage. A rear wall which is a wall surface on a drain trap pipeline side of the filth receiving surface is inclined to the drain trap pipeline side from a stored water level rise height position of the bowl part at the generation of the siphonage to a lower end position of the rear wall.

Description

  The present invention relates to a siphon type toilet.

  Conventionally, in a siphon-type toilet, a swirling flow in a substantially horizontal direction is applied to the water stored in the bowl part to collect the filth near the center while washing the filth receiving surface. A cleaning form of discharging is known (for example, see Patent Document 1).

JP 2011-174363 A

  In a siphon-type toilet as described in Patent Document 1, the rear wall, which is the drain trap side wall of the bowl portion of the filth receiving surface, extends from the height of the accumulated water level when the siphon action is activated to the bowl portion. Inclined toward the center. Due to this inclination, the axis of the swirling flow generated in the accumulated water until the siphon action is activated is directed not to the drain trap pipe but directly to the center of the bowl portion. Therefore, the swirling flow swirls in a direction directly below the center of the bowl, and the axis of the swivel flows toward the drain trap pipe at the bottom of the bowl. Easy to break. If the swirl flow is weak, it is difficult to activate the siphon action at an early stage, and it takes time and the amount of washing water to discharge filth. Therefore, in the flush toilet described above, there has been a problem that it is not possible to achieve sufficient water saving by reducing the amount of washing water in response to the need for water saving in recent flush toilets.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a siphon-type toilet that can reduce the amount of water to be washed and thereby save water by activating the siphon action early. For the purpose.

The present invention is a siphon-type toilet that flushes toilets with washing water and discharges filth,
The bowl part provided with the rim part located on the filth receiving surface and the upper edge part, and the sewage by connecting the sewage receiving surface and the sewage receiving surface for discharging cleaning water to the rim part and cleaning the filth receiving face by swirling flow, and the siphon action. A drain trap line for discharging the water together with the washing water,
The rear wall, which is the wall of the filth receiving surface on the drain trap pipe side, is inclined toward the drain trap pipe side from the raised water level of the bowl portion to the lower end position of the rear wall when the siphon action is activated. This is a siphon type toilet.

  In the present invention configured as described above, the rear wall of the filth receiving surface is inclined toward the drain trap pipe from the accumulated water level rising height position of the bowl portion to the lower end position of the rear wall when the siphon action is activated. ing. Therefore, the axis of the swirling flow in the stored water is directed to the drain trap pipe, and the swirling flow is swung along the rear wall while flowing down to the drain trap pipe at the same time until reaching the drain trap pipe. It is hard to lose the swirling water. Since the swirl flow is unlikely to be lost, the siphon action can be activated earlier and the filth can be pushed toward the drain trap pipe. Therefore, even if the amount of washing water is reduced to save water, filth can be sufficiently discharged, and water saving can be achieved.

  In the present invention, it is preferable that the filth receiving surface is a concave portion including an inclined rear wall, a front wall that is a wall surface facing the rear wall, and a side wall that is a wall surface connecting the rear wall and the front wall. The upper end of the recess is formed at a position that is substantially the same as or higher than the raised water level rise height when the siphon action is activated.

  In the present invention configured as described above, since the upper end of the recess is formed at a position substantially the same as or higher than the raised water level rise position when the siphon action is activated, all the accumulated water in the bowl portion is drained. It can be a swirling flow that flows down to the trap pipe. Further, since the swirling flow does not spread excessively, the filth is difficult to be pushed out to the outside on the filth receiving surface. Thereby, the siphon action can be started earlier, and the filth in the stored water can be pushed into the drain trap pipe. Therefore, even if the amount of washing water is reduced, filth can be discharged more reliably and water saving can be achieved.

  In the present invention, preferably, the front wall is formed at an inclined surface inclined at substantially the same inclination angle as the rear wall inclined backward from the upper end of the recess, and at a position lower than the stored water level continuously with the inclined surface. And a step portion for guiding the swirling flow generated in the stored water during the cleaning to the drain trap pipe.

  In the present invention configured as described above, the front wall of the filth receiving surface has an inclined surface inclined in substantially the same direction as the rear wall and a step portion for guiding the swirling flow to the drain trap pipe. The swirl flow surely becomes a swirl flow that flows down to the drain trap pipe. Thereby, the siphon action can be started earlier, and the filth in the stored water can be pushed into the drain trap pipe. Therefore, even if the amount of washing water is reduced, filth can be discharged more reliably and water saving can be achieved.

  According to the siphon type toilet of the present invention, the siphon action can be started earlier, and the filth can be pushed into the drain trap pipe more reliably. Therefore, even if the amount of washing water is reduced, filth can be sufficiently discharged, and water saving can be achieved.

Side surface sectional drawing which shows the siphon type toilet bowl by one Embodiment of this invention. The top view of the state which removed the low tank of the wash-off-type toilet shown in FIG.

Hereinafter, a siphon type toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side sectional view showing a siphon toilet according to an embodiment of the present invention, and FIG. 2 is a plan view of the siphon toilet shown in FIG.
As shown in FIGS. 1 and 2, a siphon type toilet 1 according to an embodiment of the present invention includes a toilet body 2, a bowl portion 4 formed at the front upper portion of the toilet body 2, and an upper rear portion of the toilet body 2. And a drainage trap pipe 8 that extends from below the bowl part 4 and discharges filth together with the washing water by a siphon action.
In addition, a low tank 10 for storing washing water is attached to the rear part of the toilet body 2. The low tank 10 is provided with a drain valve (not shown). By opening the drain valve, a set amount of cleaning water is supplied to the water conduit 6.

  The bowl portion 4 includes a bowl-shaped filth receiving surface 12 that opens upward, and a rim portion 14 that is positioned at the upper edge of the bowl portion 4. Below the bowl portion 4, a water storage surface W is formed by water storage. In addition, the water level in the reservoir surface W rises from the initial reservoir water level height W0 by the discharge of washing water, and becomes the reservoir water level height W1 when the siphon action in the trap pipe 8 is activated.

  The rear wall 18 formed on the rear side, that is, on the drain trap pipe 8 side and connecting the rim portion 14 and the drain trap pipe 8 on the filth receiving surface 12 rises in the accumulated water level of the water surface W when the siphon action is activated. From the upper end 18a which is the position of the height W1, to the lower end 18b of the rear wall 18, it has the inclined surface 18c which inclines linearly toward the back side. The inclined surface 18c only needs to be slightly inclined. Preferably, the inclined surface 18c should be inclined as much as possible within a range that does not interfere with the user's excretion.

  Further, the front wall 20 formed on the front side and connecting the rim portion 14 and the drain trap pipe 8 on the dirt receiving surface 12 is from the upper end 20a which is the position of the accumulated water level rising height W1 when the siphon action is activated. The inclined surface 20c is inclined linearly to the stepped portion 20b formed in a convex shape at a position lower than the initial stored water level height W0. The inclination angle of the inclined surface 20 c is substantially the same angle as the inclined surface 18 c of the rear wall 18.

  Further, the filth receiving surface 12 includes a recessed portion 24 including an inclined surface 18 c of the rear wall 18, an inclined surface 20 c of the front wall 20, and a side wall 22. The upper end 24a of the recessed part 24 is a position of the stored water level rising height W1 including the upper end 18a of the inclined surface 18c and the upper end 20a of the inclined surface 20c.

  The inner peripheral surface of the rim portion 14 is formed in an overhanging shape so that the cleaning water does not jump out. The rim portion 14 includes a rim water conduit 26 a that communicates with the water conduit 6, and the rim water conduit 26 a is formed with at least one rim water outlet 28 a that discharges cleaning water supplied from the water conduit 6 to the rim portion 14. Has been.

  The rim spout 28a discharges cleaning water to the rim portion 14 to form a swirling flow that swirls in the bowl portion 4 in a substantially horizontal direction. It can be cleaned. In addition, the wash water flows from the water guide path 6 through the zette water guide path 26b above the water storage surface W of the left side wall 22 when viewed from the front of the bowl section 4 and above the stepped portion 20b of the front wall 20. A supplied water outlet 28b is formed. The washing water generates a swirling flow in the vertical direction from the jet water outlet 28b to the stored water. In the present embodiment, the jet discharge port 28b is formed in addition to the rim discharge port 28a. However, the present invention is not limited to this embodiment, and only the rim discharge port 28a may be formed. Further, a toilet flushing system may be applied in which a main flow of washing water is formed from the front of the bowl portion 4 toward the inlet 8 a of the drain trap pipe 8 and filth and the like are pushed into the drain trap pipe 8.

  An inlet 8a of the drain trap pipe 8 opens behind and below the concave portion 24 of the filth receiving surface 12, and a rising pipe 8b extends rearward from the inlet 8a. The ascending pipe line 8b is connected with a lower pipe line 8d through a top 8c, and is connected to a lower discharge pipe (not shown) via a drain socket 30 at the lower end of the descending pipe line 8d. Further, the initial stored water level height W0 of the stored water surface W is defined by the top portion 8c of the drain trap pipe 8. The drain trap pipe 8 and the drain socket 30 may be integrally formed.

Hereinafter, the operation of the siphon type toilet of this embodiment will be described.
In the standby state of the siphon-type toilet 1 described above, the water level of the reservoir surface W is the initial reservoir water level height W0. When the user performs an operation to start cleaning with a lever or the like (not shown), the drain valve (not shown) of the low tank 10 is opened, and the cleaning water stored in the low tank 10 is supplied to the water conduit 6. The washing water supplied to the water conduit 6 flows into the rim water conduit 26a and the jet water conduit 26b, and is discharged from the rim water outlet 28a and the jet water outlet 28b, respectively.

  The wash water discharged from the rim water discharge port 28a is discharged from the rim water discharge port 28a onto the inner peripheral surface between the rim portion 14 and the filth receiving surface 12 in the forward direction of the toilet body 2 (in FIG. 2). Flow F2). The discharged wash water becomes a horizontal flow and forms a swirling flow toward the pooled water surface W to wash the filth receiving surface 12. The cleaning water that has reached the water storage surface W flows along with all the water stored in the recess 24 along the inclined surface 18c of the rear wall 18 and the inclined surface 20c of the front wall 20, and flows down. 2 is guided to the inlet 8a of the drain trap pipe 8 (flow F6 in FIG. 2).

  On the other hand, the wash water discharged from the jet water discharge port 28 b forms a swirling flow that swirls in the vertical direction by colliding with the upper surface of the step portion 20 b of the front wall 20 and the side wall 22 of the filth receiving surface 12. The swirling flow swirling in the vertical direction draws the floating filth floating in the vicinity of the water retentive surface W into the flow by stirring the accumulated water in the recess 24 in the vertical direction, and flows into the inlet 8 a of the drain trap pipe 8. Go. At this time, in front of the water storage surface W, the step portion 20b is formed, so that the water depth becomes shallow and the jet water outlet 28b is formed above the step portion 20b. It has become.

When the inside of the drain trap pipe 8 is filled with washing water discharged from the rim water outlet 28a and the jet water outlet 28b, the siphon action is activated. At this time, the water level of the accumulated water surface W rises from the initial accumulated water level height W0 to the accumulated water level elevated height W1.
Further, at this time, the filth collected in the vicinity of the inlet 8a in the drain trap pipe 8 is drawn from the suction force toward the drain pipe (not shown) under the floor by siphon action and the above-described water outlets 28a, 28b. The water is effectively discharged by the pushing force generated by the swirling flow formed by the water discharge and swirling into the inlet 8a of the drain trap pipe 8 while vigorously flowing.

  According to the siphon-type toilet according to the embodiment of the present invention described above, the rear wall 18 of the filth receiving surface 12 has the height of the stored water level W1 at the time of starting the siphon action from the start of cleaning to the start of the siphon action. Since it has the inclined surface 18c which inclines back from the upper end 18a which is a position to the lower end 18b, the axis line of the swirling flow in the stored water flows toward the inlet 8a of the drain trap pipe 8. Therefore, compared to a siphon-type toilet where the axis of the swirling flow does not have an inclined surface whose rear wall is inclined rearward and the center of the water surface is below the center of the water surface, the swirling water flow is reached before reaching the drain trap pipe entrance. Is hard to lose. Further, since the inclined surface 18c of the rear wall 18 is linearly inclined, the swirling flow can be smoothly swirled, and the water force is not easily lost. Therefore, the siphon action can be activated earlier. Further, the swirling flow becomes a flow for pushing the filth more toward the inlet 8 a of the drain trap pipe 8. Therefore, even if the amount of washing water is reduced, filth can be sufficiently discharged, and water saving can be achieved.

  In addition, since the inclined surface 18c of the rear wall 18 is formed so as to be more inclined, the water flow of the swirling flow is less likely to be lost. However, if the inclined surface 18c is formed so as to be inclined too much, the user may get in the way of excretion. Therefore, the inclined surface 18c is formed so as to be inclined as much as possible within a range that does not hinder the user's excretion. Is preferred.

  Furthermore, according to the siphon type toilet according to the above-described embodiment of the present invention, the bowl portion 4 has the upper end 24a of the recess 24 at the height of the stored water level W1 when the siphon action is activated. It is possible to make a swirl flow that flows down to the inlet 8a of the drain trap pipe 8 all of the stored water inside. In addition, since the swirling flow does not spread excessively from the start of washing until the siphon action is activated, the floating filth near the reservoir surface W is not pushed out of the swirling flow and stagnated. . Therefore, the siphon action can be started earlier, and the filth in the stored water can be pushed into the inlet 8 a of the drain trap pipe 8. Therefore, even if the amount of washing water is reduced, filth can be discharged more reliably and water saving can be achieved.

  Further, according to the siphon type toilet according to the embodiment of the present invention described above, the inclined surface 20c in which the front wall 20 is inclined in substantially the same direction as the inclined surface 18c of the rear wall 18 and the swirling flow at the time of cleaning. Therefore, the swirling flow is more reliably swirled to the inlet 8a of the drain trap pipe 8 while flowing down to the inlet 8a of the drain trap pipe 8. Thereby, the siphon action can be started earlier, and the filth in the stored water can be pushed into the drain trap pipe. Therefore, even if the amount of washing water is reduced, filth can be discharged more reliably and water saving can be achieved.

DESCRIPTION OF SYMBOLS 1 ... Siphon type toilet 2 ... Toilet body 4 ... Bowl part 6 ... Conduit 8 ... Drain trap line 8a ... Inlet 8b ... Ascending line 8c ... Top 8d ... Down line 10 ... Low tank 12 ... Soil receiving surface 14 ... Rim 18: Rear wall 18a: Upper end 18b ... Lower end 18c ... Inclined surface 20 ... Front wall 20a ... Upper end 20b ... Stepped portion 20c ... Inclined surface 22 ... Side wall 24 ... Recess 24a ... Upper end 26a ... Rim conduit 26b ... Zet conduit 28a ... Rim spout 28b ... Zet spout 30 ... Drain socket

W ... Reservoir surface W0 ... Initial accumulated water level height W1 ... Retained water level rise height

Claims (3)

A siphon-type toilet that flushes toilets with wash water and discharges filth,
A siphon that is connected to the filth receiving surface and a bowl portion having a rim portion positioned on the filth receiving surface and the upper edge, a water discharging portion for discharging cleaning water to the rim portion and cleaning the filth receiving surface by a swirling flow, and the filth receiving surface. A drainage trap line for discharging filth together with cleaning water by the action,
The rear wall, which is the wall surface on the drain trap pipe side of the filth receiving surface, moves from the accumulated water level rising height position of the bowl portion to the lower end position of the rear wall when the siphon action is activated, toward the drain trap pipe side. A siphon-type toilet that is tilted.   The filth receiving surface includes a concave portion configured by the inclined rear wall, a front wall which is a wall surface facing the rear wall, and a side wall which is a wall surface connecting the rear wall and the front wall, The siphon-type toilet according to claim 1, wherein an upper end of the concave portion is formed at a position substantially the same as or higher than a raised water level rising height when the siphon action is activated.   The front wall is formed at an inclined surface that is inclined at substantially the same inclination angle as the inclined rear wall from the upper end of the concave portion, and is continuously formed at a position lower than the stored water level. The siphon type toilet according to claim 2, further comprising: a step portion that guides the swirling flow generated in the drainage trap pipe.