JPH11152778A - Drainage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resolve problems that noises are generated by rolling in air by a siphon phenomenon when water in a water tank such as a kitchen sink, a wash basin, etc., is drained while resolving problems that water-sealing interruption is generated by the generation of strong siphon phenomenon. SOLUTION: The drainage system 22 is formed in a form that a drain main pipe 20 is communicated with a drain-pipe trap 18 with a down pipe section 40 downwards flowing and guiding drain from a water tank such as a kitchen sink, a wash basin, etc., a bottom section 52 continued to the down pipe section 40, a riser section 54 risen from the bottom section and a communication pipe section 56 continued to the riser section 54 by the communication pipe section 56. An air reservoir section 60, in which air is trapped and held at the time of drainage, is formed to the drain-pipe trap 18. Or a supply tank section, in which a part of drain is housed and held at the time of drainage and held drain is returned to the bottom section 52 side at the time of the completion of drainage, is installed to the drain-pipe trap 18 together with the air reservoir section 60 or separately.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a kitchen sink,
The present invention relates to a drainage device for discharging drainage from a water tank such as a basin to the outside, and more particularly to a drainage device having a drainpipe trap.

[0002]

2. Description of the Related Art As a drainage device for discharging drainage from a water tank such as a kitchen sink or a basin to the outside, a device as shown in FIG. 16 is conventionally used. In the figure, reference numeral 200 denotes a water tank such as a kitchen sink, a basin, or the like. A drain device 202 having a drain pipe trap 204 and a drain main pipe 206 is connected to a drain port thereof, and drain water from the water tank 200 is passed through the drain device 202. It is designed to be discharged outside.

[0003] The drain pipe trap 202 is provided with the falling pipe section 20.
8, a bottom 210, a rising pipe 212 rising upward from the bottom 210, and a connecting pipe 214 following the connecting pipe 214. In the connecting pipe 214, a drain pipe trap 204 and a drain main pipe 206 are provided. Has been contacted.

[0004] The drain pipe trap 204 keeps water sealed at the lower part and the bottom part 210 of the falling pipe part 208 and the rising pipe part 212, and prevents the backflow of odor from downstream.

In the case of this drainage device 202, a negative pressure acts on the inside of the drainage pipe trap 204 due to the water flowing down in the drainage main pipe 206 when the water in the water tank 200 is drained, and foreign matter such as lint and the like inside the drainage pipe trap 204 is removed. Drain pipe trap 20
4 Downstream side by siphon phenomenon with drainage inside,
That is, it is drawn into the drain main pipe 206 side and is discharged well to the outside. Then, a certain amount of water falling from the water tank 200 at the end of drainage is held inside the drain trap 204 to perform water sealing.

[0006]

However, in the case of this drainage device, the following problems have conventionally occurred. That is,
When the siphon phenomenon occurs in the drainpipe trap 204, noise such as “gobo-gobo” is generated by entraining air from the drain port or the overflow hole of the water tank 200, or when the siphon phenomenon occurs strongly,
The water retained in the drain trap 204 is the drain main 20.
There has been a problem that the amount of water sealed is reduced by being strongly drawn to the 6 side. In particular, in the case of having a drain trap having a form as shown in FIG.

[0007] The drainage device 202A of the form shown in FIG.
The bottom 210A of the drain pipe trap 204A has a substantially horizontal straight form, that is, the bottom 210 does not have an upward curved shape as in the conventional drain pipe trap 204 shown in FIG. In the case of the drain trap 204A, the lower surface of the bottom portion 210A can be positioned upward. Therefore, when this is applied to a drain device of a washbasin of a vanity, a drain pipe in a cabinet is required. The advantage that the storage space below the trap 204A can be secured widely can be obtained, but on the other hand, when the water sealing depth becomes shallow, the above-described water sealing breakage easily occurs.

[0008]

The invention of the present application has been made to solve such a problem. According to the first aspect of the present invention, there is provided a drainage device for guiding a drainage from a water tank such as a kitchen sink or a basin downwardly, a bottom portion following the downfall portion, and a rising portion rising from the bottom portion. And a drain trap having a horizontal connecting pipe portion following the rising pipe portion, wherein a drain main pipe having at least an upper part having a falling shape is connected by the connecting pipe portion. The pipe trap is provided with an air reservoir for trapping and holding air during drainage.

According to a second aspect of the present invention, in the drainage device according to the first aspect, the upper end portion of the rising pipe portion or a portion of the communication pipe portion is partially projected upward, or a portion of the communication pipe portion is oriented laterally. And the air reservoir is formed inside the protruding portion.

[0010] The drainage device according to claim 3 is a kitchen sink,
A falling pipe part for guiding the drainage from a water tank such as a basin downward, a bottom part following the falling pipe part, a rising pipe part rising from the bottom part, and a lateral connecting pipe part following the rising pipe part. In a drainage device in which at least the upper part of the drainage pipe having a falling shape is connected to the drainage pipe trap with the connecting pipe part, the drainage pipe trap accommodates and holds a part of drainage at the time of drainage. And a replenishing tank for returning the retained waste water to the bottom side when the waste water ends.

According to a fourth aspect of the present invention, there is provided the drainage device according to the third aspect, wherein the riser section or the riser section and the waterway of the riser section and the communication section extend over the riser section and the connection section. Is partially enlarged rapidly with respect to the front and rear water passages to form a container portion, and the supply tank portion is formed in the container portion.

According to a fifth aspect of the present invention, in the drainage device according to the fourth aspect, the replenishing tank portion comprising the container portion has a shape portion that projects laterally or downward at a height equal to or lower than the upper end of the water channel. Features.

According to a sixth aspect of the present invention, in the drainage device according to any one of the fourth and fifth aspects, the riser portion is formed with a container portion in which a part thereof is rapidly expanded in a direction perpendicular to the pipe axis of the riser portion. And the replenishing tank portion.

According to a seventh aspect of the present invention, in the drainage device according to any one of the third to fifth aspects, the supply tank is formed so as to straddle the communication pipe and the riser pipe and communicate with the connection pipe. A lower end of the supply tank, the end of the supply tank on the side of the riser pipe is opened into the riser, and the upper part of the supply tank and the connecting pipe following the supply tank is formed as a whole. It is characterized by having a Dharma-shaped cross section.

The drainage device according to claim 8 is a kitchen sink,
A falling pipe part for guiding the drainage from a water tank such as a basin downward, a bottom part following the falling pipe part, a rising pipe part rising from the bottom part, and a lateral connecting pipe part following the rising pipe part. In a drainage device in which at least the upper part of the drainage pipe having a falling shape is connected to the drainage pipe trap with the connecting pipe part, the drainage main pipe is connected to the lower surface of the end of the connecting pipe part. And, a portion from the bottom surface of the end portion of the connecting pipe portion to the inner wall surface on the connecting pipe side following the bottom surface of the drainage main pipe is formed in a downwardly bent angular shape to distribute the connecting pipe portion. The drainage water flows into the drainage main pipe such that the drainage water hits the outer wall surface of the drainage main pipe opposite to the inner wall surface by its own water force.

According to a ninth aspect of the present invention, in the drainage device according to any one of the first to eighth aspects, at least a portion of the connecting pipe portion following the riser pipe portion has an inclined shape inclined downward toward the riser pipe portion. It is characterized by what has been done.

In a tenth aspect of the present invention, in the drainage device according to any one of the first to ninth aspects, at least a portion of the connecting pipe portion following the drainage main pipe has an inclined shape inclined downward toward the drainage main pipe. It is characterized by what has been done.

The drainage device according to claim 11 is the ninth and tenth aspect.
In any one of the above, the connecting pipe portion is divided into the riser pipe portion side and the drain main pipe side, and the rise pipe portion side portion is directed toward the rise pipe portion, and the drain main pipe side portion is separated. It is characterized in that it has a shape that is inclined downward toward the drain main pipe.

[0019]

As described above, the drainage device according to the first aspect of the present invention is provided with an air reservoir for trapping and holding air at the time of drainage in the drainpipe trap. It is possible to suppress the siphon phenomenon at the time of drainage, thereby suppressing the generation of noise such as "gobo-gobo" entrained by air at the time of drainage and the occurrence of running out of water.

In the drainage device according to the first aspect, the drainage main pipe is connected to the lower surface of the distal end portion of the connecting pipe portion, and the upper end portion of the connecting pipe portion is formed to have a downwardly bent angular shape so that the upper portion of the upper end portion can be formed. Can form an air reservoir. With this configuration, the air reservoir can be easily formed only by forming the upper end of the connecting pipe portion into a downwardly bent angular shape.

According to a second aspect of the present invention, the upper end of the riser or a part of the communication pipe is partially projected upward or a part of the communication pipe is horizontally projected. The air reservoir is formed in the inside of the part, so that the air reservoir can be formed large, and the air reservoir can be formed simply by the riser pipe or the connecting pipe. A simple configuration can be achieved simply by partially projecting a part.

According to a third aspect of the present invention, in the drain device, a drain tank is provided with a replenishing tank for storing and holding a part of the drain water at the time of draining and returning the held drain water to the bottom side of the drain pipe trap at the end of drain. According to this drainage device, it is possible to satisfactorily prevent the drainage trap from breaking due to the siphon phenomenon.

According to a fourth aspect of the present invention, a part of the water channel is suddenly expanded to the front and rear water channels over the rising pipe portion or the rising pipe portion and the connecting pipe portion. A container portion is formed, and a replenishing tank portion is formed in the container portion. In this way, the replenishing tank portion can be easily formed, and a part of the drainage can be satisfactorily replenished at the time of drainage. The drainage held and stored at the end of the drainage can be smoothly returned to the bottom side of the drainpipe trap through the riser section.

In this case, the replenishing tank portion may have a shape portion projecting sideways or downward at a height equal to or lower than the upper end of the water channel (claim 5). Since the replenishing tank has such a protruding portion at a height equal to or lower than the upper end of the water channel, a part of the drainage can be flowed into the replenishing tank without difficulty during drainage, and can be held.

According to a sixth aspect of the present invention, there is provided a drainage device in which a replenishing tank portion is formed in which a part of a rising pipe portion is rapidly expanded in a direction perpendicular to the pipe axis, and this drainage device is included in drainage. There is an advantage that there is no problem that sand, dust, and the like remain in the replenishing tank portion and deposit.

According to a seventh aspect of the present invention, in the drainage device, a supply tank section is provided below the communication pipe section in a state of extending over the communication pipe section and the rising pipe section and in communication therewith. In this drainage device, a part of the drainage can be satisfactorily contained and held in the replenishment tank at the time of drainage,
When the drainage is completed, the retained wastewater can be smoothly returned to the bottom side of the drainpipe trap through the riser section.

In the apparatus according to the seventh aspect, the upper portion of the replenishing tank portion in the replenishing tank portion and the communication pipe portion has a Dharma-shaped cross section as a whole. The drainage that has flowed into the supply tank can be further prevented from flowing into the communication pipe,
Therefore, a part of the drainage can be satisfactorily stored and held in the supply tank.

In the drainage device according to the present invention, the portion from the bottom surface of the end of the connecting pipe to the inner wall surface of the drainage main pipe is formed in a downwardly bent angular shape. The drainage flowing through the connecting pipe can flow into the drainage main pipe so as to abut against the outer wall face opposite to the inner wall face of the drainage main pipe by its own water force.

[0029] In this case, since the inside of the drain main pipe is unlikely to be full at the time of drainage, and a layer of air that passes in the vertical direction is formed, the siphon phenomenon at the time of drainage can also be suppressed by doing so. Therefore, it is possible to suppress the gurgling noise of air entrained at the time of drainage, and also to suppress the occurrence of water breakage.

According to a ninth aspect of the present invention, at least a part of the connecting pipe portion, specifically, a portion on the rising pipe portion side is formed in a shape inclined downward toward the rising pipe portion. In this case, sand, dust, and the like inside the communication pipe portion can be smoothly discharged toward the drainage main pipe based on the inclined shape thereof, and they are prevented from remaining and accumulating in the communication pipe portion. be able to.

Further, the connecting pipe portion may have a portion on the drain main pipe side inclined downward toward the drain main pipe (claim 10). Also in this case, sand, dust, and the like inside the communication pipe portion can be discharged toward the drain main pipe.

When the connecting pipe section is inclined as described above, the connecting pipe section is divided into a riser pipe side and a drain main pipe side, and a portion of the riser pipe section is directed toward the riser pipe section. The part on the drain main side can be formed in a shape inclined downwardly toward the drain main.
1).

When the connecting pipe portion is relatively long, and when the entire connecting pipe portion is inclined in a certain direction, it is difficult to discharge all sand, dust and the like in the connecting pipe portion to the drain main pipe side.

According to the eleventh aspect, when the connecting pipe portion is divided into a riser pipe portion side and a drain main pipe side, and each is inclined in the opposite direction, sand and debris inside the connecting pipe portion are totally removed. And can be discharged well.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a vanity stand, 12 denotes a basin, and 14 denotes a basin faucet. 16 is a vanity table 1
0 is provided with a drainage device 22 having a drain trap 18 and a drain main pipe 20 therein.

FIG. 2 shows the structure of the drainage device 22 in detail. In the figure, reference numeral 24 denotes an opening formed at the bottom of the basin 12, and a metal and cylindrical drain port member 28 having a flange 26 is inserted downward into the opening 24, and A drain port 30 is formed by the member 28.

The drain port member 28 has a male screw portion on the outer peripheral surface of the lower end portion, and a tightening nut 32 is screwed into the male screw portion from the back side of the basin 12. The drainage member 28 is fixed to the bottom of the basin 12 via packings 34 and 36 and a slip washer 33 by the tightening force of the nut 32.

The tightening nut 32 is formed with a downwardly opening annular groove 38 in which the drain trap 18 is formed.
The annular projecting portion 42 at the upper end of the falling pipe portion 40 is assembled in a state where it is fitted watertightly and relatively rotatably via an O-ring 44 as a sealing material. Here, a downward stepped surface 46 is formed on the outer peripheral surface of the annular projection 42.

On the other hand, a fitting groove 48 is formed in a portion of the tightening nut 32 outside the annular groove 38 as shown in FIG. 3, and an elastic C is formed inside the fitting groove 48 as a retaining member. The ring 50 is fitted and its inner peripheral portion is a stepped surface 46.
, So that the upper end of the drain pipe trap 18 is prevented from being pulled out from the tightening nut 32.

The drain pipe trap 18 is provided with the drain port member 2.
The above-mentioned falling pipe part 4 which falls straight down following 8
0, a bottom portion 52 following the bottom portion, a riser portion 54 that rises straight from the right end of the bottom portion 52 in the figure, and a connecting tube portion 56 extending in the horizontal direction following the upper end thereof. The drain main pipe 20 is connected to the lower surface of the end of the pipe section 56.

In this embodiment, the bottom portion 52 does not have a curved shape like the bottom portion of the conventional drain pipe trap shown in FIG. 16, but has a straight shape extending straight in the left-right direction.

In this embodiment, the inner diameters D ₁ , D ₁ ,
D ₂ and D ₃ are each 34mmφ, 28mmφ, 28m
mφ.

In this embodiment, the distal end of the communication tube portion 56 is partially protruded upward, and the protruding portion 58 is formed.
Is formed with an air reservoir 60 inside. In addition, from the bottom of the end of the connecting pipe 56, the connecting pipe 56
The portion extending to the inner wall surface 20A on the side has a rectangular shape bent downward at a right angle. That is, the intersection between the bottom surface of the connecting pipe portion 56 and the inner wall surface 20A of the drain main pipe 20 is 90
The corner 62 intersects at an angle of °.

The bottom surface 5 of the end portion of the connecting pipe portion 56
It is desirable that the upper end portions of the inner wall surface 6A and the inner wall surface 20A of the drain main pipe 20 be flat surfaces as shown in FIGS. 9B and 9C.

FIG. 4 schematically shows the flow of water at the time of drainage in the drainage device of this embodiment. As shown in FIG.
In this state, the air is trapped and held at zero. That is, an air pocket is generated there. And the siphon phenomenon at the time of drainage is suppressed by the action of the air pool.

Furthermore, in the case of the drainage device of the present embodiment, the flow of drainage flowing horizontally through the connecting pipe portion 56 hits the outer wall surface 20B of the drainage main pipe 20 opposite to the inner wall surface 20A by its own water force. As described above, the water flows into the drain main pipe 20.

As a result, as shown in FIG.
An air layer 64 that passes vertically through the inside of the drain main pipe 20 is formed on the lower side of 2. The air layer 64 also suppresses the siphon phenomenon.

For this reason, in the case of the drainage device 22 of the present embodiment, the noise that entrains the air at the time of drainage, that is, the “rumble”
At the same time, the drain trap 18 is prevented from being completely sealed.

In this embodiment, a part of the connecting pipe 56 is partially projected upward to form the air reservoir 60 inside the projection 58, so that the air reservoir 60 is formed. Can be formed large, and the siphon action at the time of drainage can be effectively suppressed. Moreover, the air reservoir 60 can be easily configured.

Further, the presence of the air layer 64 acts to help suppress the siphon phenomenon, and a large "burdock sound" generated when the siphon action is too strong.
And the occurrence of water seal breakage is more effectively prevented.

FIG. 5 shows an example in which the protruding portion 58 is provided at the middle part in the left-right direction of the connecting pipe portion 56 and an air reservoir 60 is provided inside the connecting portion 56. It is possible to keep the air trapped in the air reservoir 60. Therefore, even in the case of FIG. 5, the action of the air reservoir 60 can suppress the siphon phenomenon at the time of drainage. In addition, it is possible to suppress the generation of noise and running out of water.

In this embodiment, the upper end of the connecting tube 56 is bent downward, and a corner 66 is formed therein. The inside of the corner 66 is an air reservoir 68.

Therefore, in the case of the drainage device of this example, the air is trapped and held inside the corner portion 66 at the time of drainage, and the siphon action is further suppressed by the action of the air in the air reservoir 68.

As shown in FIG. 6A, the projecting portion 58 and the air reservoir 60 can be formed by projecting the end of the communication tube portion 56 horizontally (rearward) in the horizontal direction. . In addition, the connecting tube portion 56 can be formed not only correctly in a horizontal direction but also in a slightly inclined shape as shown in FIG. 6 (B).

The protruding portion 58 and the air reservoir 60
May be formed at the end of the slightly inclined connecting pipe portion 56 as shown in FIG. 6 (B), or upward at the intermediate portion as shown in FIG. 6 (C). It can also be formed.

In the present invention, as shown in FIG. 7, the connecting pipe 5 is provided without providing a protruding part in which a part of the connecting pipe is partially protruded and an air reservoir inside thereof.
It is also possible to form the upper end of 6 into a square shape and form the air reservoir 68 only inside the corner 66.

Even in this case, the basin 1
When the momentum of the drainage from 2 is not extremely strong, it is possible to sufficiently suppress the generation of noise and the occurrence of water breakage.

That is, in a case where the drainage plug is lifted upward with the basin 12 being full, a gap is formed between the drain port and the drainage plug, and when the water in the full state flows through the gap. In addition, it is possible to sufficiently prevent the generation of the noise and the occurrence of the break in water. When the protruding portion 58 and the air reservoir 60 inside the protruding portion 58 are added, their effects can be further enhanced.

FIGS. 8 and 9 show still another embodiment of the present invention. In this example, a container-like replenishing tank portion for temporarily storing and holding a part of the drainage at the time of drainage, and automatically returning the stored and held drainage to the bottom 52 side of the drain pipe trap 18 at the end of drainage. Reference numeral 70 is provided below the connecting pipe 56 in such a manner as to extend over the rising pipe 54 and the connecting pipe 56. Here, the supply tank unit 70 is provided in a form in which the upper surface and the left end surface in the drawing are open to the communication tube unit 56 and the rising tube unit 54.

Here, the supply tank section 70 and the connecting pipe section 56
As shown in FIG. 9 (A), each has a circular cross-sectional shape, and they are vertically connected to each other at an opening 72. That is, the upper portion of the supply tank 70 and the communication pipe 56, more precisely, the upper part of the supply tank 70 in the communication pipe 56 has a dramatic cross-sectional shape. A constriction 74 is formed at the boundary.

The bottom surface 5 at the end of the connecting tube 56
The shape of 6A is a flat shape as shown in FIG. 9 (B). Also, as shown in (C),
The upper end of the inner wall surface 20A of the drain main pipe 20 is also flat.

FIG. 10 schematically shows the behavior of water flow at the time of drainage in the drainage device shown in FIGS. As shown in the figure, in the case of the drainage device of this example, when the water in the basin 12 is drained vigorously, a part of the drainage is stored and held in the supply tank unit 70. And at the end of drainage, that is, when the momentum of the drainage flow becomes weaker,
The water temporarily stored and held in the supply tank unit 70 is returned to the bottom 52 side of the drain trap 18.

The drainage device of this embodiment has been devised based on the following knowledge. With the water inside the basin 12 filled with water, the plug of the drain port 30 is pulled out and the drain port 3 is removed.
When the water in the basin 12 is completely drained in this state, the drain water flows through the drain pipe trap 18 and the drain main pipe 20 with violent force. In this state, it is difficult to sufficiently suppress the siphon phenomenon, and it is difficult to completely prevent running out of water with the drainage device of the above-described embodiment.

Therefore, the apparatus shown in FIGS. 8 and 9 does not prevent running out of water by suppressing the siphon phenomenon.
At the end of the drainage, when the momentum of the water flow is weakened, the drainage temporarily stored and held up to that point is returned to the bottom 52 side of the drain pipe trap 18 so as to prevent the water from being completely sealed. What was done. Therefore, in the case of the drainage device of this example, the flow of water is remarkably strong, and it is possible to sufficiently prevent the water from being completely sealed even under the condition where the siphon phenomenon occurs excessively.

In the apparatus of this embodiment, corners 66, 62 and an air reservoir 68 inside the corner 66 are formed at the end of the connecting pipe 56, so that the drainage is at an intermediate level. Specifically, in a state where the inside of the basin 12 is filled with water and the plug at the bottom is slightly lifted to drain the water, the siphon phenomenon can be sufficiently suppressed, and the noise caused by air entrainment can be suppressed. It is possible to sufficiently prevent the occurrence of water leakage and breakage of water due to the siphon phenomenon.

FIG. 11 shows another embodiment of the replenishing tank section. Among them, the one shown in FIG.
4 is projected leftward in FIG.
In the example of FIG. 11B, a container portion is formed in which the upper end of the riser portion 54 protrudes in a direction perpendicular to the respective tube axis directions of the riser portion 54 and the communication tube portion 56. This is an example in which the supply tank unit 78 is formed. Further, the example of (C) shows an example in which the example of FIG. 11B and the examples of FIGS. 8 and 9 are combined.

In the present invention, as shown in FIG. 12, the distance L between the respective pipe axes of the rising pipe portion 54 and the drain main pipe 20 in the drain pipe trap can be varied. Also, as shown in (B), a part or the whole of the drain main pipe 20 can be constituted by the bellows pipe 80.

FIG. 13 shows still another embodiment of the present invention. In this example, a part of the communication pipe part 56, specifically, a part on the rise pipe part 54 side is formed as an inclined part 82 which is inclined downward toward the rise pipe part 54, and an air trap is formed at an upper end part of the rise pipe part 54. This is an example in which a replenishing tank 84 is also provided.

Here, as shown in FIG. 14, the replenishment tank portion 84 is formed to have a larger horizontal width than the riser tube portion 54 and the communication tube portion 56. That is, in this example, the container section is formed by rapidly expanding the water channel of the riser section 54 in two directions perpendicular to the pipe axis of the riser section 54, and the supply tank section 84 is formed by the container section. . The supply tank portion 84 has a configuration in which the upper portion protrudes upward from the left end of the connecting pipe portion 82 in the drawing.

In the present embodiment, the inside of the upwardly projecting portion mainly acts as an air reservoir, and the other portion acts as a supply tank.

The replenishing tank portion 84 temporarily stores and retains part of the drainage when drainage is performed vigorously at the time of drainage, and transfers the retained and retained drainage to the drainpipe trap at the end of drainage. Return water to the bottom side.

In the case of the drainage device of this example, the supply tank 8
4 is formed vertically at the upper end of the riser section 54, a part of the riser section 54 is accommodated and held in the supply tank section 84 at the time of drainage, and the drainage housed and held at the end of the drainage is discharged to the drain pipe trap 18. When returning to the bottom 52 side, there is an advantage that sand, dust, and the like contained in the drainage remain in the replenishing tank portion 84 and do not cause a problem that they gradually accumulate.

Further, in this embodiment, the portion of the connecting pipe portion 56 on the side of the rising pipe portion 54 is formed as an inclined portion 82 which is inclined downward toward the rising pipe portion 54. Also, there is an advantage that there is no problem that sand, dust and the like remain inside and gradually accumulate. That is, when the connecting pipe portion 56 is made substantially horizontal, there is a problem that sand and debris remain therein and gradually accumulate, but in the drainage device of this example, the sand and debris inside the connecting pipe portion 56 are inclined. The water flowing through the part 82 is discharged to the drain main pipe 20 side, and is prevented from remaining in the connecting pipe part 56.

FIG. 15 shows still another embodiment of the present invention. In this embodiment, when the connecting pipe 56 is elongated in the left-right direction, the connecting pipe 56 is inclined in the opposite direction to each other. This is an example in which two inclined portions 82 and 86 are formed. That is, in this example, the connecting pipe portion 56 is divided into the rising pipe portion 54 side and the drain main pipe 20 side, and the portion of the rising pipe portion 54 side is inclined portion 82 inclined downward toward the rising pipe portion 54. And the portion on the drain main 20 side is the drain main 2
The inclined portion 86 is inclined downward toward zero.

As described above, by forming the connecting pipe portion 56 into the inclined portions 82 and 86 which are inclined in opposite directions, even when the connecting pipe portion 56 is formed to be long, the connecting pipe portion 56 is formed.
It is possible to prevent the accumulation of sand, dust and the like inside, and it is possible to satisfactorily discharge the sand, dust and the like toward the drain main pipe 20.

Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be applied to a drainage device for discharging drainage from a kitchen sink to the outside. It can be configured in a form in which various changes are made without departing from the scope.

[Brief description of the drawings]

FIG. 1 is a diagram showing a drainage device according to an embodiment of the present invention connected to a washbasin of a vanity stand.

FIG. 2 is a diagram showing a specific configuration of a drainage device in FIG.

FIG. 3 is an exploded view showing a main part of the drainage device of FIG. 2 into respective members.

FIG. 4 is a view showing the operation of the drainage device of the embodiment.

FIG. 5 is a view showing an air reservoir and a peripheral portion thereof according to another embodiment of the present invention, together with their actions.

FIG. 6 is a view showing an air reservoir and its peripheral portion according to still another embodiment of the present invention.

FIG. 7 is a view showing an air reservoir and a peripheral portion together with the operation thereof according to still another embodiment of the present invention.

FIG. 8 is a view showing a drainage device according to still another embodiment of the present invention.

9 is a sectional view of a main part of the drainage device of FIG.

FIG. 10 is an operation explanatory view of the drainage device of FIG. 8;

FIG. 11 is a view showing an air reservoir and its peripheral portion according to still another embodiment of the present invention.

FIG. 12 is a view showing a drainage device according to still another embodiment of the present invention.

FIG. 13 is a view showing a drainage device according to still another embodiment of the present invention.

14 is a sectional view of a main part of the drainage device of FIG.

FIG. 15 is a sectional view of a main part of a drainage device according to still another embodiment of the present invention.

FIG. 16 is a diagram showing an example of a conventional drainage device.

FIG. 17 is a comparative example diagram for comparing and explaining advantages of the present invention.

[Explanation of symbols]

 Reference Signs List 12 wash basin 18 water distribution pipe trap 20 drain main pipe 20A inner wall surface 20B outer wall surface 22 drainage device 40 falling pipe part 52 bottom part 54 rising pipe part 56 communication pipe part 58 protruding part 60, 68 air pool part 62, 66 corner part 64 Air layer 70 Replenishment tank part 74 Constriction part 82,86 Inclined part

Claims (11)

[Claims] 1. A falling pipe portion for guiding drainage from a water tank such as a kitchen sink, a basin, and the like downward, a bottom portion following the falling pipe portion, a rising pipe portion rising from the bottom portion, and the rising pipe portion. And a drain pipe trap having a horizontal connecting pipe section following the drain pipe main body, at least the upper part of which has a falling shape is connected to the drain pipe trap by the connecting pipe section. A drain device provided with an air reservoir for holding and holding the air. 2. The method according to claim 1, wherein an upper end portion of the riser pipe portion or a part of the communication pipe portion is partially upwardly projected, or a part of the communication pipe portion is horizontally projected. A drain device wherein the air reservoir is formed inside a protruding portion. 3. A falling pipe portion for guiding wastewater from a water tank such as a kitchen sink or a basin downwardly, a bottom portion following the falling pipe portion, a rising pipe portion rising from the bottom portion, and the rising pipe portion. And a drain pipe trap having a horizontal connecting pipe section following to the drain pipe trap, wherein at least the upper part of the drain main pipe having a falling shape is connected by the connecting pipe section to the drain pipe trap. Hold some of the
A drainage device provided with a replenishing tank for returning the held wastewater to the bottom side when the drainage ends. 4. The riser according to claim 3, wherein the riser or a part of the riser and a part of the water channel of the riser and the communicating tube are arranged in front of and behind the riser and the connecting tube. A drain portion, wherein the container portion is formed by suddenly expanding partially with respect to the water channel, and the supply tank portion is formed in the container portion. 5. The drainage device according to claim 4, wherein the replenishing tank portion comprising the container portion has a shape portion protruding sideways or downward at a height equal to or lower than an upper end of the water channel. 6. The replenishing tank portion according to claim 4, wherein a container portion is formed in the rising pipe portion so that a part thereof is rapidly expanded in a direction perpendicular to a pipe axis of the rising pipe portion. A drainage device characterized by the following. 7. The refilling tank according to claim 3, wherein the replenishing tank is provided at a lower part of the connecting pipe so as to extend over the connecting pipe and the riser and communicate with them. The riser pipe side end of the supply tank section was opened into the riser pipe section, and the upper part of the supply tank section and the communication pipe section following the supply tank section was formed into a Dharma-shaped cross section as a whole. A drainage device characterized by that: 8. A falling pipe portion for guiding drainage from a water tank such as a kitchen sink or a basin downward, a bottom portion following the falling pipe portion, a rising pipe portion rising from the bottom portion, and the rising pipe portion. And a drain pipe trap having a horizontal connecting pipe section following the drain pipe main body, at least the upper part of which has a falling shape is connected to the drain pipe by the connecting pipe section. The drain main pipe is connected, and a portion from the bottom surface of the end portion of the connecting pipe portion to the inner wall surface on the communication pipe side following the bottom surface of the drain main pipe is formed in a downwardly bent angular shape. The drainage flowing through the connecting pipe portion flows into the drainage main pipe so as to abut against the outer wall surface of the drainage main pipe opposite to the inner wall surface by its own water force. Drainage equipment. 9. The connecting pipe according to claim 1, wherein at least a portion of the connecting pipe following the rising pipe has an inclined shape inclined downward toward the rising pipe. Drainage equipment. 10. The drainage pipe according to any one of claims 1 to 9, wherein at least a portion of the connecting pipe portion following the drainage main pipe has an inclined shape inclined downward toward the drainage main pipe. Drainage equipment. 11. The rising pipe section according to claim 9, wherein the connecting pipe section is divided into the rising pipe section side and the drainage main pipe side. ,
A drain device characterized in that a portion of the drain main side is inclined downward toward the drain main.