JP5835549B2 - Wash-off type waste discharge device - Google Patents

Description

  The present invention relates to a washing-off type waste discharging apparatus applied to a soil distribution and a flush toilet or the like.

The flush toilet bowl is a flush toilet that drains filth by flowing water due to a drop in water, and is widely used as a toilet that is easy to save water because of its narrow water surface.
Wash-off sewage distribution is similar to flush toilets, and is used in hospitals and the like to discharge filth (stool, vomit, etc.).
Here, since it is necessary to prevent the infection from the filth to the user when discharging the filth, the sewage logistics needs to be formed at a low position from the upper part of the main body because the water storage surface needs to be narrow, so the siphon type A wash-off type that can form the water surface at a narrow and low position is recommended.

  An example of a conventional flush-type flush toilet is described in Patent Document 1. As shown in FIG. 10, the flush toilet of Patent Document 1 supplies wash water to a rim water passage 82 from a water supply chamber 80 provided at the upper end of the flush toilet 100 and forms the rim water passage 82. Washing water is discharged from the numerous water discharge holes 84 to wash the bowl portion 86. Next, the wash water is supplied to the branch water passage 88 via the rim water passage 82, and the wash water is discharged from the water outlet 90 provided at the tip of the branch water passage 88. The washing water containing the filth flows in from the inlet 94 of the drain trap pipe 92 formed on the back side of the rear wall 87 of the bowl portion 86, gets over the drain path wall 96, and is discharged to the outside. . In the flush toilet bowl, when the drain trap pipe 92 becomes full and siphon action occurs, the amount of accumulated water in the bowl portion 86 is insufficient, so that the siphon action is prevented from occurring. In addition, the cross-sectional diameter of the drain trap pipe 92 is formed as large as possible. This is also the case with wash-out waste logistics.

JP 2000-234374 A

However, as shown in Patent Document 1 described above, in the flush toilet bowl, if the cross-sectional diameter of the drain trap pipe 92 is made as large as possible in order to suppress the siphon action, as shown in FIG. In addition, after the cleaning is started, the cleaning water flows from the inlet 94 of the drain trap pipe 92 and passes over the drain path wall 96. A turbulent flow including the vortex V is generated, and the turbulent flow causes a problem that the cleaning water does not flow smoothly over the drainage channel wall 96 and the cleaning performance is deteriorated.
This problem also applies to wash-off waste logistics. Therefore, in the present specification, hereinafter, the flush toilet bowl and the flush waste logistics are collectively referred to as a “flush waste discharge device”.

  Therefore, the present invention was made to solve the disadvantages of the prior art, and when discharging the wash water through the drain trap pipe, it is possible to suppress the occurrence of turbulence in the ascending pipe, An object of the present invention is to provide a wash-out type waste discharging device capable of performing efficient cleaning while suppressing the occurrence of siphon action.

In order to achieve the above-mentioned object, the present invention is a wash-out type waste discharging device that cleans the main body with cleaning water and discharges the waste, and is provided on the main body and located on the waste receiving surface and the upper edge. A bowl portion having a rim portion, a rim water spouting portion for discharging cleaning water to the rim portion to clean the filth receiving surface, an inlet, and an obliquely rearward side along the back of the rear wall forming the filth receiving surface from the inlet And a drain trap pipe having a descending pipe connected to the rising pipe and extending downward, the rising pipe rising from the lower end of the rear wall of the filth receiving surface. A constant cross-sectional area in which the cross-sectional area of the pipe is constant by a predetermined length along the downstream side from a position perpendicular to the bottom of the pipe, and a bottom surface of the drain trap pipe from the downstream end of the constant cross-sectional area Contact with and a cross-sectional area expanding portion cross-sectional area of the conduit gradually expanded until the uppermost end of the The ascending pipeline is formed so that the bottom surface of the cross-sectional area enlarged portion extends from the bottom surface of the constant cross-sectional area portion to the rear side, and then extends substantially linearly downstream along the central axis of the drain trap conduit, The constant cross-sectional area of the ascending pipeline is formed in an arc shape in the cross section perpendicular to the central axis of the drain trap pipe, and the enlarged cross-sectional area is the central axis of the drain trap pipe. In the cross section perpendicular to the cross section, the bottom surface is formed into a substantially flat surface .
In the present invention configured as described above, the filth receiving surface is washed with the washing water discharged from the rim water discharging unit, and then the washing water containing the filth is discharged to the outside from the drain trap pipe. At this time, the washing water enters the ascending pipeline from the inlet, but the washing water becomes a smooth flow in the same direction of the flow line due to the constant cross-sectional area portion of the predetermined length, and in this state, the turbulent flow is likely to occur. As a result, the turbulent flow can be prevented, and the washing water flows from the constant cross-sectional area portion to the cross-sectional area enlarged portion on the downstream side. Occurrence can be suppressed. As a result, according to the present invention, efficient cleaning can be performed while suppressing the occurrence of siphon action without degrading the cleaning performance.
Further, after the bottom surface of the cross-sectional area enlarged portion of the rising pipe of the drain trap pipe is bent rearward from the bottom surface of the constant cross-section area, it extends substantially linearly downstream along the central axis of the drain trap pipe. Therefore, the apex of the drain trap pipe, which is the rear end of the ascending pipe, can be lowered. Accordingly, the cleaning water can easily get over the ascending pipeline, and the cleaning water can easily flow into the descending pipeline, so that efficient cleaning can be performed while suppressing the occurrence of siphon action.
Further, in the drain trap pipe, the bottom surface of the constant cross-sectional area portion of the ascending pipe is formed in an arc shape, so that the washing water flows smoothly in the same direction of the streamline by the predetermined step cross-sectional area constant portion. It becomes. Furthermore, since the bottom surface of the cross-sectional enlarged portion is formed to have a substantially flat surface, the cleaning water can easily flow from the constant cross-sectional area portion to the cross-sectional area enlarged portion, thereby suppressing the occurrence of siphon action. Efficient cleaning can be performed.

In the present invention, preferably, the bent portion of the cross-sectional area enlarged portion of the rising pipe of the drain trap pipe is formed at a height position 20 mm to 40 mm below the height position of the water storage surface of the bowl section.
In the present invention configured as described above, the bent portion of the cross-sectional area enlarged portion of the rising pipe of the drain trap pipe is formed at a height of 20 mm to 40 mm below the height of the reservoir surface of the bowl. This prevents the siphon phenomenon from occurring due to the fact that the inside of the drain pipe becomes difficult to fill up, and the wash water can easily get over the rise pipe and the wash water can easily flow to the down pipe. Efficient cleaning can be performed while suppressing the occurrence of the action.

In this invention, Preferably, it further has a jet discharge part which discharges wash water from the jet discharge port opened to the side part of the filth receiving surface of the said bowl part.
In the present invention configured as described above, since the cleaning water is discharged from the jet water outlet by the jet water discharger, the filth can be effectively stirred together with the water discharged by the rim water discharger. In this state, filth flows into the inlet of the ascending pipeline along with the cleaning water, passes over the ascending pipeline, and the cleaning water flows to the descending pipeline, so that more efficient cleaning is performed while suppressing the occurrence of siphon action. be able to.

  According to the wash-out type waste discharge device of the present invention, when the wash water is discharged through the drain trap pipe, it is possible to suppress the occurrence of turbulence in the ascending pipe, and further suppress the occurrence of siphon action. , Efficient cleaning can be performed.

It is a top view which shows wash-off-type waste distribution by 1st Embodiment of this invention. It is sectional drawing seen along the II-II line of FIG. It is sectional drawing seen along the III-III line of FIG. It is sectional drawing seen along the IV-IV line of FIG. It is sectional drawing seen along the VV line of FIG. It is sectional drawing seen along the VI-VI line of FIG. It is sectional drawing seen along the VII-VII line of FIG. It is a top view which shows the flush toilet bowl by 2nd Embodiment of this invention. It is sectional drawing seen along the VIII-VIII line of FIG. It is sectional drawing which shows the conventional wash-off type flush toilet.

Hereinafter, with reference to the attached drawings, the filth distribution according to the first embodiment of the present invention will be described. This 1st Embodiment is an example which applied the washing-off-type waste discharge device by this invention to dirty logistics.
FIG. 1 is a plan view showing a wash-off type waste distribution according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. It is sectional drawing seen along the -III line.
The sewage distribution 1 according to the embodiment of the present invention is a floor drainage type wash-off sewage distribution in which a drain trap pipe, which will be described later, is connected to a water pipe (not shown) installed on the floor.

As shown in FIG. 1 to FIG. 3, the wash-off type waste stream 1 is provided with a body 2 which is soiled, and the body 2 is made of earthenware with a glaze layer formed on the surface, and a skirt 3 at the bottom. The bowl part 4 is formed in the front of the upper half, and the water conduit 6 is formed in the upper rear part.
Further, a flush valve 8 communicating with the water conduit 6 is provided at the rear upper part of the main body 2 for the dirty logistics. The flash valve 8 communicates with a water supply pipe (not shown), and a water supply valve (not shown) is provided in the flash valve and is opened and closed by an operation lever 10. In the filth distribution 1 according to the present embodiment, when the user operates the operation lever 10, 6 liters of cleaning water is filthated and supplied to the main body 2 at a time. In the present embodiment, cleaning water may be supplied from a water storage tank other than the flush valve.

  The bowl portion 4 is formed below the filth receiving surface 12, a bowl-shaped filth receiving surface 12, a rim portion 14 constituting an upper edge portion, a shelf 16 formed on the lower end side of the rim portion 14, and the filth receiving surface 12. A reservoir 18. Here, the bowl portion 4 is provided with a rear wall 13 on the rear side of the filth receiving surface 12.

  Here, as shown in FIGS. 2 and 3, the inner peripheral surface 14 a of the rim portion 14 has a shape that overhangs inward so that swirling cleaning water, which will be described later, does not jump out. ing. Furthermore, the inner peripheral surface 14a of the rim part 14 is set to a height that does not hit the user or the like even if the sewage is thrown into the bowl part 4 even if the water stored in the water storage part 18 splashes. This prevents the user and the like from being infected by filth. Further, as shown in FIG. 2 or 3, the shelf portion 16 is formed substantially horizontally (or slightly inwardly inclined) and is formed in an annular shape around the entire circumference of the bowl portion 4.

  A rim spout 20 for discharging the wash water is formed slightly behind the central portion on the left side when viewed from the front of the shelf 16 of the bowl portion 4. The rim water spouting port 20 forms a swirling flow that swirls in one direction (counterclockwise direction in FIG. 1).

  Further, as shown in FIG. 3, a jet spout 22 is formed in a portion located substantially at the center of the left side (side surface) when viewed from the front of the filth receiving surface 12 of the bowl portion 4. The jet water discharge port 22 is formed above the position of the water storage surface L. Further, a step portion 24 extending in a substantially horizontal direction is formed in a portion of the bowl portion 4 adjacent to the jet outlet 22 of the filth receiving surface 12, and the step portion 24 includes a rear end portion 24 a. The front half of the jet spout 22 is located on the front side of the rear end 24a.

  A first water passage 26 and a second water passage 28 are branched and connected to the front side of the water conduit 6 formed on the rear upper part of the dirty body described above. Here, the first water passage 26 is for supplying cleaning water to the rim water spouting port 20. The second water passage 28 is for supplying cleaning water to the jet outlet 22, and the cleaning water is directed downward toward the step portion 24 of the bowl portion 4 as shown in FIGS. 1 to 3. It is formed in a shape that ejects.

  Next, the drain trap pipe will be described in detail with reference to FIGS. 4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a sectional view taken along line V-V in FIG. 2, and FIG. 6 is a sectional view taken along line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.

  As shown in FIG. 2, the washout-type filth distribution 1 includes a drain trap pipe 30 for discharging filth, and the drain trap pipe 30 is provided at the bottom of the filth receiving surface 12 of the bowl portion 4. An inlet 32, an ascending pipeline 34 that extends obliquely rearward along the rear surface of the rear wall 13 that forms the filth receiving surface 12 from the inlet 32, and a descending that is connected to the ascending pipeline 34 and extends downward A conduit 36.

  As shown in FIG. 2, the inlet 32 of the drain trap pipe 30 is provided at a position vertically lowered from the lower end 13 a of the rear wall 13 of the filth receiving surface 12, and the bottom surface of the inlet 32 as shown in FIG. 4. The cross section of 38 is formed in the circular arc shape, and the lower end 13a which is the upper surface is formed in the planar shape.

  As shown in FIG. 2, the rear side of the rising pipe 34 of the drain trap pipe 30 is formed by the rear wall 13 of the filth receiving surface 12, and after the filth receiving surface 12 is formed from the inlet 32 as described above. Along the back surface of the wall 13, the wall 13 is extended obliquely backward.

The ascending pipeline 34 has a predetermined length along the downstream side from a position B that is lowered from the lower end 13a of the rear wall 13 of the dirt receiving surface 12 (shown by A in FIG. 2) to the bottom surface 38 of the ascending conduit 34 at a right angle. A cross-sectional area constant portion 40 having a constant cross-sectional area of the pipe line by a length of 50 mm to 70 mm is provided, and a cross-sectional area expanding portion 42 formed downstream of the constant cross-sectional area portion 40 and gradually increasing in cross-sectional area is provided. I have. Here, the constant cross-sectional area portion 40 is a region surrounded by ABCD in FIG. 2, and the cross-sectional area enlarged portion 42 is a region surrounded by CEFD in FIG. 2.
As shown in FIG. 5, the cross-sectional area constant portion 40 of the ascending pipeline 34 has a bottom surface 38 formed in an arc shape and an upper surface (the lower end 13 a of the rear wall) formed in a planar shape.

Next, as shown in FIG. 2, the cross-sectional area enlarged portion 42 of the ascending pipeline 34 is bent rearward at a bent portion 48 that is also a downstream end of the constant cross-sectional area portion 40 and extends substantially linearly. . Further, the bent portion 48 is formed at a position 20 mm to 40 mm vertically below the position of the water storage surface (initial water storage water level) L of the water storage section 18 of the bowl portion 4.
As shown in FIG. 6, the cross-sectional area enlarged portion 42 has a bottom surface 38 formed in a flat shape, and a top surface (the back surface of the rear wall 13), similarly formed in a flat shape, and has a substantially rectangular cross section. It has become.

Here, as shown in FIG. 2, the bottom surface 38 of the cross-sectional area enlarged portion 42 is linearly rearward with a rising angle β that is smaller than the rising angle α of the bottom surface 38 of the constant cross-sectional area portion 40. It is formed to extend. Further, the width W of the pipe cross section of the cross-sectional area enlarged portion 42 is substantially constant, and is formed such that the height H gradually increases as shown in FIGS.
For this reason, the height direction position of the uppermost end 38a of the bottom face 38 of the drain trap pipe 30 can be lowered.

As shown in FIG. 2, the descending conduit of the drain trap conduit 30 is connected to the downstream end of the ascending conduit 34, and the sectional shape thereof is the sectional shape of the ascending conduit 34 shown in FIG. 7. As with the cross-sectional area enlarged portion 42 of the ascending pipeline 34, an enlarged portion is formed.
Further, the lower end of the descending pipe 36 is connected to a floor pipe via a drain socket (not shown) so as to discharge cleaning water containing dirt. In addition, the filth flow 1 according to the first embodiment may be of a type in which the descending pipeline 36 is connected to a water pipe installed on a wall via a drain socket.

Next, the operational effects of the filth distribution according to the first embodiment of the present invention described above will be described.
First, after the filth is distributed and the filth is introduced into 1, when the operation lever 10 is operated by the user, the filth receiving surface 12 of the bowl portion 4 is washed by the washing water discharged from the rim spout 20. . At the same time, the washing water is jetted downward from the jet discharge port 22 toward the step portion 24 of the bowl portion 4. A part of the washing water ejected from the jet water discharge port 22 hits the stepped portion 24, thereby forming a vertical swirling flow as shown in FIG. As a result, the level of the cleaning water in the bowl portion 4 rises, thereby increasing the drop, effectively discharging the filth from the drain trap portion 30, and increasing the cleaning efficiency.

In addition, the wash water that has flowed into the drain trap pipe 30 and entered the rise pipe 40 becomes a smooth flow in the same direction of the flow line due to the constant cross-sectional area 40. Since the vicinity of the rear surface of the rear wall 13 of the bowl portion 4 where a flow is likely to occur is raised, the occurrence of turbulent flow can be prevented.
Furthermore, since the wash water flows from the constant cross-sectional area portion 40 of the ascending pipeline 34 to the cross-sectional area enlarged portion 42 on the downstream side thereof, the occurrence of siphon action can be suppressed. As a result, according to the filthy logistics 1 according to the first embodiment, it is possible to suppress the generation of siphon action and perform efficient cleaning without deteriorating the cleaning performance. Furthermore, since the stored water is sucked into the drainage pipe by the siphon action and no cleaning water is required for replenishing the stored water, an effect of reducing the amount of cleaning water can be obtained.

  Further, in the filthy logistics 1 according to the first embodiment, the cross-sectional area enlarged portion 42 is formed to be bent backward from the cross-sectional area constant portion 40 at the bent portion 48 and extend substantially linearly. The position in the height direction of the uppermost end (vertex) 38a of the bottom surface of the drain trap pipe 30 which is the rear end of the pipe 34 can be lowered. Accordingly, the cleaning water easily gets over the ascending pipeline 34, and the cleaning water easily flows into the descending pipeline 36. Therefore, efficient cleaning can be performed while suppressing the occurrence of siphon action.

  Further, in the filthy logistics system 1 according to the first embodiment, the bottom surface 38 of the constant cross-sectional area portion 40 of the rising pipe 34 is formed in an arc shape in the drain trap pipe 30, so that the step cross-sectional area of a predetermined length is formed. Due to the fixed portion 40, the washing water becomes a smooth flow in the same direction of the streamline. Further, since the bottom surface 38 of the cross-sectional enlarged portion 42 is formed to have a substantially flat surface, the cleaning water can easily flow from the cross-sectional area constant portion 40 to the cross-sectional area enlarged portion 42, thereby generating siphon action. Efficient cleaning can be performed while suppressing the above.

  Further, in the filth distribution 1 according to the first embodiment, the bent portion 48 of the cross-sectional area enlarged portion 42 of the rising pipe 34 of the drain trap pipe 30 is 20 mm to 40 mm from the height position of the pool surface L of the bowl portion 4. Since it is formed at the lower height position, it becomes easier for the washing water to get over the ascending pipeline 34 and the washing water to easily flow into the descending pipeline 36, so that the efficient washing while suppressing the occurrence of siphon action. Can be performed.

  Furthermore, in the filth distribution 1 according to the first embodiment, since the cleaning water is discharged from the jet outlet 22, the filth can be effectively stirred together with the cleaning water discharged from the rim outlet 20. In this state, the filth and the washing water flow into the inlet 32 of the ascending pipeline 34, get over the ascending pipeline 34, and the washing water flows into the descending pipeline 36. Cleaning can be performed.

Next, a flush toilet according to a second embodiment of the present invention will be described with reference to FIGS. 2nd Embodiment is an example which applied the wash-off-type waste discharge device by this invention to the flush toilet.
FIG. 8 is a plan view showing a flush toilet according to a second embodiment of the present invention. 9 is a cross-sectional view taken along line VIII-VIII in FIG. Since the flush toilet according to the second embodiment has substantially the same structure as that of the above-described dirty logistics according to the first embodiment, only the parts of the second embodiment different from the first embodiment will be described here.

As shown in FIGS. 8 and 9, the flush toilet 50 according to the second embodiment includes a flush toilet body 52. The flush toilet 50 includes a bowl portion 54, a water conduit 56, a filth receiving surface 62, a rim portion 64, a shelf portion 66, and the like. Further, the inner peripheral surface 64a of the rim portion 64 has a lower height than the 1 for the filthy logistics, considering that the user uses it in a sitting position.
Also in the flush toilet 50 according to the second embodiment, the drain trap part 30 is provided with the rising pipeline 34 and the descending pipeline 36 which are the same as those for the filthy logistics 1.

  In the flush toilet 50 according to the second embodiment, as in the case of the filthy logistics 1 according to the first embodiment, the wash water that flows into the drain trap pipe 30 and enters the rising pipe 40 has a constant cross-sectional area. By the portion 40, the washing water becomes a smooth flow in the same direction of the flow line, and in this state, the vicinity of the back surface of the rear wall 13 of the bowl portion 54 where the turbulent flow is likely to occur is raised. Out. Furthermore, since the wash water flows from the constant cross-sectional area portion 40 of the ascending pipeline 34 to the cross-sectional area enlarged portion 42 on the downstream side thereof, the occurrence of siphon action can be suppressed. As a result, according to the flush toilet 50 according to the second embodiment, the siphon action can be suppressed and efficient cleaning can be performed without deteriorating the cleaning performance.

DESCRIPTION OF SYMBOLS 1 Wash-off-type filth logistics 2 Dirty logistics body 4 Bowl part 12 Soil receiving surface 13 Rear wall 13a Rear wall lower end 14 Rim part 18 Reservoir 20 Rim outlet 22 Jet outlet 24 Step part 26 First passage 28 Second passage Water passage 30 Drain trap pipe 32 Inlet 34 Rising pipe 36 Lowering pipe line 38 Bottom surface 40 Constant cross-sectional area 42 Cross-sectional area enlarged part 48 Bending part 50 Flush toilet 52 Flush toilet body 54 Bowl part 56 Water guide path 64 Rim part

Claims (3)

A wash-off type waste discharging device for cleaning the main body with washing water and discharging the waste,
A bowl provided with a rim provided on the filth receiving surface and the upper edge;
A rim water spouting portion for discharging washing water to the rim portion and washing the waste receiving surface;
A drainage trap comprising an inlet, a rising pipe that rises obliquely rearward along the rear surface of the rear wall that forms the waste receiving surface from the inlet, and a downward pipe that is connected to the rising pipe and extends downward A conduit,
The ascending pipe has a constant cross-sectional area portion in which the cross-sectional area of the pipe is constant by a predetermined length along a downstream side from a position perpendicular to the bottom surface of the ascending pipe from the lower end of the rear wall of the waste receiving surface. When equipped with a cross-sectional area expanding portion cross-sectional area of the conduit to the uppermost end of the bottom surface of the drain trap pipe is gradually increased from the downstream end of the cross-sectional area constant section,
The ascending pipeline extends substantially linearly downstream along the central axis of the drain trap pipe after the bottom surface of the enlarged cross-sectional area portion is bent rearward from the bottom surface of the constant cross-sectional area portion. Formed,
The constant cross-sectional area portion of the ascending pipeline has a bottom surface formed in an arc shape in a cross section perpendicular to the central axis of the drain trap conduit, and the enlarged cross-sectional area includes the drain trap conduit A wash-off type waste discharging apparatus, characterized in that the bottom surface of the cross section is perpendicular to the central axis of the surface . The bent portion of the cross-sectional area expanding portion of the riser channel of the drain trap pipe is wash-off of claim 1, wherein formed in the height position of 20mm to 40mm downward from the height position of the reservoir water level of the bowl portion Type waste discharger. Furthermore, the washing-out type waste discharging apparatus of Claim 1 or 2 which has a jet water discharge part which discharges washing water from the jet water outlet opened to the side part of the waste receiving surface of the said bowl part.

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