JP2008274679A - Siphon-jet toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a siphon-jet toilet bowl which enables savings in the quantity of flushing water, and which can secure a necessary flushing function. <P>SOLUTION: This siphon-jet toilet bowl 10 for supplying the flushing water by utilizing water head pressure of the flushing water comprises a bowl portion 16, a rim spout 24, a drainage trap pipeline 28 for discharging filth by siphonage, a jet spout 26, a rim driving channel 32 for supplying the flushing water to the rim spout, and a jet driving channel 34 for supplying the flushing water to the jet spout. The jet driving channel comprises branch water channels 34a and 34b which branch off into a plurality of parts, a merging portion 36 which merges flushing water flows from the plurality of branch water channels with one another so as to whirl it toward the jet spout, and a flow straightening portion 38 for straightening the flushing water flow merged in the merging portion. The merging portion is provided with an outer wall portion 40 which is almost linearly formed so that the whirling flushing water in an outside area can frontally collide with it, and an inner wall portion 42 in which a curved portion is formed so that the whirling flushing water in an inside area can smoothly flow toward the jet spout. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a siphon jet toilet, and more particularly, to a siphon jet toilet that supplies wash water using the head pressure of wash water stored in a water storage tank.

Conventionally, wash water is supplied to the jet spout formed in the bowl part of the toilet body using the head pressure of the wash water stored in the water storage tank, and filth is removed by the siphon action of the drain trap pipe. Siphon Zet toilet bowls are known to be discharged.
Here, in the conventional siphon jet toilet, as shown in FIG. 10, wash water from a water storage tank (not shown) is passed through the jet conduit 2 formed in the bowl portion 1 to the jet outlet 4. In order to supply, the Zet conduit 2 was U-shaped in plan view.

  However, if the Zet water channel 2 is U-shaped, as shown in FIG. 11, the wash water supplied from the Zet water channel 2 becomes a swirling flow A, and the wash water discharged from the Zet water outlet 4 ( The swirling flow A) is a flow having a biased flow velocity distribution (also called curve inertia) in which the outer flow velocity is fast and the inner flow velocity is slow.

  If the flow velocity distribution of the wash water discharged from the jet outlet 4 is biased in this way, the drain trap pipe is delayed from becoming full, and the activation of the siphon action is thereby delayed.

  In order to correct this unevenness of the flow rate distribution of the washing water, as shown in FIG. 12, Patent Document 1 discloses a Zet water channel 2a, 2b that branches the Zet water channel 2 into two from the upstream side toward the downstream side. In addition, a siphon-zette toilet is known in which the downstream sides of these zet conduits 2a and 2b face each other toward the zet spout 4. In the siphon jet toilet of Patent Document 1, the wash water from the two jet conduits 2a and 2b joins at the junction 6 while turning, so the flow rate distribution of the wash water in the respective jet conduits 2a and 2b Since the bias (curve inertia) is canceled and the flow rate is doubled by merging at the same time, the washing water is pressurized at the merging portion 6 and discharged toward the jet outlet 4 that is the only outlet.

  Further, in order to correct the deviation of the flow rate distribution of the washing water, as shown in FIG. 13, Patent Document 2 is provided with two jet conduits 2a and 2b as shown in FIG. A siphon jet toilet is known in which the downstream side of the water channels 2a, 2b is curved so as to have a bent portion 8, and the merging portion 6 is formed to have a slightly wide space.

Japanese Utility Model Publication 1-44616 US Pat. No. 7,111,333

Here, in the siphon set toilet that supplies the wash water using the head pressure of the wash water of the water storage tank, the wash water is supplied from the water storage tank at the time of washing, and the zette waterway becomes full. The water head pressure (water pressure head) is applied to the accumulated water in the bowl portion.
In addition, the siphon set toilet is configured to discharge filth to the outside by the filth pulling action by the siphon and the filth pushing action by the hydraulic head.
Therefore, in the Siphon Zet toilet, the hydraulic head becomes higher as the height (H) from the bowl reservoir water to the surface of the wash water in the water storage tank at the moment when the Zet conduit is full. The cleaning ability is increased.

  In this connection, in the state (initial state) of the toilet before washing, the inside of the Zet conduit is open to the atmosphere, so that the edge of the washing water in the water storage tank and the stored water in the bowl portion is cut off. It has become. For this reason, after the cleaning of the toilet bowl is started, first, when the cleaning water in the water storage tank is supplied to the bowl portion, it is necessary to discharge the air present in the jet conduit. The presence of air in the jet conduit may buffer the head pressure of the water storage tank and reduce the flow rate of the wash water from the jet outlet. Since the decrease in the flow rate of the washing water delays the start of the siphon action, the washing water is consumed wastefully and cannot satisfy the demand for water saving.

  Considering the characteristics of such a siphon jet toilet, in the siphon jet toilet of Patent Document 1 described above, two flushing waters collide head-on in almost the entire area at the time of merging, so the air in the jet conduits 2a and 2b Since the discharge can be performed in a short time, this point is effective, but a large pressure loss occurs due to the frontal collision across the entire area, the potential energy is lost, and the flow rate of the washing water discharged from the jet outlet 4 is reduced. When the flow rate of the washing water decreases, the activation of the siphon action is delayed, and the washing water is consumed unnecessarily, and the toilet is unable to meet the demand for water saving.

  Furthermore, in the siphon jet toilet of Patent Document 2 described above, since the two flushing waters do not collide head-on in almost the entire area at the time of merging as in Patent Document 1, the merging portion is a slightly wider space. Is considered to be reduced, but it is a toilet that cannot form an appropriate pressure loss that allows the air in the jet conduit to be discharged in a short time.

  Therefore, the present invention can save the amount of washing water used for toilet cleaning, and can ensure a washing function equivalent to or higher than that of the conventional product with a smaller amount of washing water than the conventional product. The purpose is to provide.

In order to achieve the above object, the present invention provides a toilet bowl provided with a bowl portion having a filth receiving surface in a siphon jet toilet bowl that supplies wash water using the head pressure of wash water stored in a water storage tank. The main body, a rim spout formed on the upper edge of the bowl part, a drain trap pipe provided at the bottom of the bowl part for discharging filth by siphon action, and a position facing the inlet of the drain trap pipe of the bowl part And a rim water conduit that supplies cleaning water in the water storage tank to the rim water outlet, and a Zet water conduit that supplies cleaning water in the water storage tank to the jet water outlet. The diversion channel is divided into a plurality of branched water channels branched from the upstream side to the downstream side, a merging unit for merging the wash water from the plurality of branched water channels and turning the squeezed toward the jet outlet, and the merging unit Washed water The merging portion is formed of an outer wall portion that is formed substantially linearly so that the swirling water in the swirling outer region collides with the head, and the swirling water in the swirling inner region is directed toward the jet outlet. And an inner wall part formed with a bent part so as to flow smoothly.
In the present invention configured as described above, in the initial state when the toilet is used, air is present in the jet conduit, but the cleaning water in the water storage tank is supplied to the jet conduit at the start of cleaning. At this time, since the outer wall portion of the merging portion is formed almost linearly, only the wash water in the swirling outer region from the jet conduit collides head-on, thereby causing the pressure in the jet conduit to instantaneously Ascending, the air remaining in the jet conduit is discharged from above, and the jet conduit becomes full in a short time. As a result, in the present invention, since the jet conduit is filled with water in a short time, a large level difference H (hydraulic head) acts between the cleaning water in the water storage tank and the water stored in the bowl portion, so that the filth Large pushing action (pushing force) can be obtained, and siphon action can be generated early.
Moreover, in this invention, since a confluence | merging part has an inner wall part in which the bending part was formed, the wash water of the inner area | region which turns turns flows smoothly toward a jet outlet.
As described above, according to the present invention, not all of the cleaning water from the jet conduit is collided in the front direction, but only the cleaning water in the outer region that swirls from the jet conduit is subjected to the frontal collision swirl, Since it is designed to flow smoothly, energy loss can be minimized.

In this invention, Preferably, the bending part of the inner wall part of a confluence | merging part has a curvature radius of the range of 15 mm-30 mm by planar view.
In the present invention configured as described above, the washing water in the swiveling inner region can smoothly flow toward the jet outlet without colliding at the junction, and energy loss at the junction is minimized. Can be held down. As a result, the siphon action can be generated at an early stage, thereby enabling cleaning with a small amount of cleaning water.

In the present invention, preferably, the rectifying section has a predetermined horizontal length and is formed to extend in the horizontal direction in the height direction toward the drain trap pipe.
In the present invention configured as described above, the washing water is rectified also in the height direction by the rectifying unit. As a result, the siphon action can be generated at an early stage, thereby enabling cleaning with a small amount of cleaning water.

In the present invention, preferably, the amount of washing water stored in the water storage tank is in the range of 2.5 liters to 6.5 liters.
In this invention comprised in this way, a toilet bowl can be wash | cleaned with the small amount of washing water of 2.5 liters-6.5 liters.

  According to the siphon set toilet of the present invention, the amount of washing water used for toilet flushing can be saved, and a washing function equivalent to or higher than that of the conventional product can be secured with a smaller amount of washing water than the conventional product. it can.

  Next, referring to the attached drawings, a siphon-zette toilet according to an embodiment of the present invention will be described. First, a basic structure of a siphon-zette toilet according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front sectional view showing a siphon jet toilet according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG.

As shown in FIGS. 1 to 3, the siphon set toilet 10 according to the present embodiment includes a toilet main body 12 and a water storage tank 14 for storing wash water disposed at the upper rear of the toilet main body 12. The water storage tank 14 stores 2.5 to 6.5 liters of wash water.
The toilet body 12 includes a bowl portion 16 at a front portion, and a bowl-shaped filth receiving surface 18 and a rim 20 as an upper edge portion are formed on the bowl portion 16. A discharge port 22 for discharging filth is formed at the bottom of the bowl portion 16.

A rim spout 24 (24a, 24b) for discharging cleaning water is formed at two locations on the rim 20 which is the upper edge of the bowl portion 16, and a discharge port 22 is formed on the front lower side of the bowl portion 16. A jet outlet 26 is formed toward the head.
Further, a drain trap pipe 28 for discharging filth by a siphon action is formed on the lower rear side of the bowl portion 16.
Here, the jet outlet 26 is formed at a position facing the inlet 28 a of the drain trap pipe 28 via the outlet 22.

In addition, a water supply chamber 30 to which wash water is supplied from the water storage tank 14 is formed at the upper rear part of the toilet body 12. Further, the water supply chamber 30 is configured to guide the wash water to the rim water spouting port 24 described above. A rim water conduit 32 and a jet water conduit 34 for guiding cleaning water to the jet outlet 26 are connected to each other.
The jet conduit 34 branches from the upstream side to the downstream side into two conduits, a first jet conduit 34a on the right side and a second jet conduit 34b on the left side when the toilet body 12 is viewed from the front. Is provided.

  A junction 36 is formed on the downstream side of the first jet conduit 34a and the left second jet conduit 34b to join the wash water from the jet conduits 34a, 34b. A rectifying unit 38 for rectifying the combined wash water is formed on the downstream side of 36, and the downstream end of the rectifying unit 38 becomes the above-described jet spouting port 26.

  Next, the Zet water conduits 34a and 34b, the merging unit 36, and the rectifying unit 38 of the siphon set toilet according to the present embodiment will be described in detail with reference to FIGS. FIG. 4 is an enlarged plan view showing the zette waterway, merging section, and rectifying section of the siphon jet toilet according to the present embodiment, FIGS. 5 and 6 are enlarged partial plan views of FIG. 4, and FIG. It is an enlarged partial front view.

  First, as shown in FIGS. 4 to 6, the cleaning water A (see FIG. 4) from the jet conduits 34 a and 34 b is joined to the junction 36 in a swirled state. Here, since the washing water A is a swirling flow, the washing water B (see FIG. 5) in the outer region of the merging portion 36 has a relatively high flow velocity, while the washing water C in the inner region of the merging portion 36 (see FIG. 5). 6) is relatively slow.

For this reason, in this embodiment, as shown in FIG. 5, the junction part 36 is provided with the outer wall part 40 located in the side far from the jet outlet 26, and this outer wall part 40 is formed substantially linearly.
Although details will be described later in this embodiment, the cleaning water B in the outer region of the cleaning water A from the left and right jet conduits 34a and 34b collides from the front.

  Next, in the present embodiment, as shown in FIG. 6, the merging portion 36 includes an inner wall portion 42 located on the side closer to the jet discharge port 26, and the inner wall portion 42 is washed water from the jet conduits 34 a and 34 b. The cleaning water C in the inner region of A is formed by a bent portion having a radius of curvature R in plan view so that it smoothly flows toward the jet outlet 26. Here, in this embodiment, it is preferable that the curvature radius R is in the range of 15 mm to 30 mm.

  Furthermore, in this embodiment, as shown in FIG. 7, the rectifying unit 38 for rectifying the merged wash water extends linearly in a substantially horizontal direction toward the inlet 28 a of the drain trap pipe 28. Is formed. Moreover, this rectification | straightening part 28 has a preferable length of 10 mm or more, More preferably, it is the length of 10 mm-30 mm.

  Next, the operation of the siphon jet toilet according to the above-described embodiment of the present invention will be described. First, in the initial state (before using the toilet bowl), the siphon jet toilet 1 according to the present embodiment is in a state in which the upper portions in the water supply chamber 30 and the jet conduit 34 are open to the atmosphere and air is present, as shown in FIG. The edges of the wash water in the water storage tank 14 and the stored water in the bowl portion 16 are cut off.

  As shown in FIG. 9, from the initial state, when the cleaning start state is reached, the water supply chamber 30 and the jet conduit 34 are filled with the cleaning water from the water storage tank 14, and then the cleaning water in the water storage tank 14 and The water head pressure (water pressure head) represented by the level difference H from the water stored in the bowl portion 16 acts on the water stored in the bowl portion 16. Thereafter, the wash water from the Zet water conduit 34 is discharged from the Zet spout 26 to the drain trap line 28 via the junction 36 and the rectifier 38. The drain trap pipe 28 is filled with water, and the filth is discharged to the outside by the filth pulling action by the siphon action and the filth pushing action by the hydraulic head itself. For this reason, since the hydraulic head becomes larger as the level difference H between the cleaning water in the water storage tank 14 and the stored water in the bowl portion 16 at the moment when the water supply chamber 30 and the jet conduit 34 are full, the hydraulic head becomes larger. Ability increases.

Next, as shown in FIG. 5, the outer wall portion 40 located on the side far from the jet outlet 26 of the junction 36 is formed substantially linearly, so the washing water A from the left and right jet conduits 34a and 34b. The washing water B in the outer region of the vehicle collides from the front.
When the flush water B from the left and right jet conduits 34a and 34b collides head-on, the pressure in the jet conduits 34a and 34b instantaneously rises, and in the initial state shown in FIG. The air accumulated in the rim is pushed out from the rim conduit 32, and as a result, the jet conduits 34a and 34b become full in a short time.

As described above, in the present embodiment, since the jet conduits 34a and 34b are filled with water in a short time, a larger level difference H (hydraulic head) between the cleaning water in the water storage tank 14 and the accumulated water in the bowl portion 16 is obtained. However, it acts on the accumulated water in the bowl portion 16 and can obtain a large pushing force of the filth.
Moreover, in this embodiment, like the siphon jet toilet of Patent Document 1, not all of the wash water from the jet conduits 34a and 34b are collided in front, but a part in the outer region of the swirling wash water As compared with the one of Patent Document 1, the energy loss when the hydraulic head of the cleaning water in the water storage tank 14 acts on the accumulated water in the bowl portion 16 can be minimized. .

Next, in the present embodiment, as shown in FIG. 6, the inner wall portion 42 located on the side closer to the jet outlet 26 of the confluence portion 36 is formed with a radius of curvature R, and therefore the jet conduits 34 a and 34 b. The washing water C in the inner region of the washing water A from the water flows smoothly toward the jet outlet 26.
As described above, in this embodiment, like the siphon jet toilet of Patent Document 1, not all of the cleaning water from the jet conduits 34a and 34b is collided in front, but is a part of the swirling cleaning water. Only the wash water B in the outer region collides with the front, and the wash water C in the inner region flows smoothly without causing a collision. It is possible to minimize energy loss when the hydraulic head of water acts on the water stored in the bowl portion 16.

  Moreover, in this embodiment, since the washing water from the two jet conduits 34a and 34b is merged at the junction 36 in the jet conduit 34, the flow velocity distribution of the swirling flow that exists in the lateral direction in plan view. As a result, the wash water discharged from the jet outlet 26 becomes a straight water flow with respect to the drain trap pipe 28, that is, the velocity distribution in the lateral direction becomes uniform, The energy (hydraulic pressure head) of the cleaning water in the water storage tank 14 can be efficiently used for discharging filth, and therefore the siphon can be activated early.

  Furthermore, in this embodiment, as shown in FIG. 7, since the rectifying unit 38 for rectifying the merged wash water is provided downstream of the merge unit 36, the wash water discharged from the jet outlet 26 is The water flow is straight with respect to the drain trap pipe 28, that is, the velocity distribution in the vertical direction is uniform, and the energy (water pressure head) of the wash water in the water storage tank 14 is efficiently utilized for the discharge of filth. In addition, the siphon can be activated early.

It is front sectional drawing which shows the siphon zette toilet bowl by embodiment of this invention. It is a top view of FIG. It is sectional drawing along the III-III line of FIG. It is an enlarged plan view which shows the zette waterway, the junction part, and the rectification | straightening part of the siphon zette toilet bowl by embodiment of this invention. FIG. 5 is an enlarged partial plan view of FIG. 4. FIG. 5 is an enlarged partial plan view of FIG. 4. FIG. 5 is an enlarged partial front view of FIG. 4. It is a fragmentary sectional view showing the initial state of the siphon set toilet according to an embodiment of the present invention. It is a fragmentary sectional view which shows the washing | cleaning start state of the siphon zest toilet bowl by embodiment of this invention. It is a top view which shows the conventional siphon zest toilet. It is an enlarged plan view which shows the deviation (curve inertia) of the flow velocity distribution of the swirling flow of the wash water in the conventional siphon set toilet. It is a top view which shows the conventional siphon zest toilet (patent document 1). It is the elements on larger scale which show the conventional siphon set toilet (patent document 2).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Siphon Zet toilet 12 Toilet body 14 Water storage tank 16 Bowl part 24 Rim water outlet 26 Zet water outlet 28 Drain trap pipe 30 Water supply chamber 32 Rim water channel 34 Zet water channel 34a First Zet water channel 34b Second Zet water channel 36 Junction part 38 Rectification part 40 Outer wall part 42 Inner wall part

Claims (4)

In the siphon set toilet that supplies wash water using the head pressure of wash water stored in the water storage tank,
A toilet body provided with a bowl portion having a waste receiving surface;
A rim spout formed on the upper edge of the bowl part;
A drain trap pipe that is provided at the bottom of the bowl part and discharges filth by siphon action,
A jet spout formed at a position facing the inlet of the drain trap pipe in the bowl portion;
A rim conduit for supplying cleaning water in the water storage tank to the rim spout;
A jet conduit for supplying cleaning water in the water storage tank to the jet outlet,
The Zet waterway is divided into a plurality of branched waterways branched from the upstream side toward the downstream side, a merging portion for merging the wash water from the plurality of branched waterways and turning toward the Zet spout, and this merging portion A rectifying unit that rectifies the washing water that has joined at the section, and the joining unit includes an outer wall portion that is formed substantially linearly so that the cleaning water in the swirling outer region collides frontally, and the inner region that swirls A siphon-zette toilet having an inner wall part formed with a bent part so that the wash water smoothly flows toward the zet spout.   The siphon jet toilet according to claim 1, wherein the bent portion of the inner wall portion of the merging portion has a radius of curvature in a range of 15 mm to 30 mm in plan view.   3. The siphon jet toilet according to claim 1, wherein the rectifying unit has a predetermined horizontal length and is formed to extend in a substantially horizontal direction in a height direction toward the drain trap pipe.   The siphon jet toilet according to any one of claims 1 to 3, wherein the amount of washing water stored in the water storage tank is in a range of 2.5 liters to 6.5 liters.

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