JP4595872B2 - Bathroom drainage structure - Google Patents

Description

  The present invention relates to a technique for draining water by joining drainage from three places, drainage from a bathtub, drainage from a floor pan for a bathtub, and drainage from a washing floor pan.

  Conventionally, as drainage in bathrooms such as bathroom units, there are drainage from three places: drainage from bathtubs, drainage from the floor pan for the bathtub where the bathtub is installed, and drainage from the wash floor floor pan. However, it is necessary to seal the water with a trap to prevent odor backflow and insects from entering.

  Conventionally, drainage from the bathtub floor pan flows to the bathtub drain trap part where drainage from the bathtub flows, and the bathtub drain trap part is connected to the washing drain drain trap part that drains the wastewater from the washing floor floor pan, A drainage pipe for draining to the outside was connected to the wastewater drain trap section. Both the drainage from the bathtub and the drainage from the bathtub floor pan are drained from the bathtub drain trap section to the drainage pipe through the washing ground drain trap section, and the drainage from the washing floor floor pan is drained from the washing floor drain trap section. It was trying to drain into the pipe. For this reason, in the above conventional example, the drainage on the bathtub side with the largest drainage amount may flow backward from the washing ground drain trap part to the washing floor floor pan side or back to the bathtub floor pan side.

  Moreover, as shown in FIG. 11, it comprised so that the waste_water | drain from the floor pan for bathtubs may flow through the bathtub drain trap part 2 through which the waste_water | drain from a bathtub flows, and the subdrain pipe 60 connected to this bathtub drain trap part 2 was connected. Connect to the side of the main drainage pipe 61 connected to the washing ground drainage trap section 6 through which the wastewater from the washing floor floor flows, cross-connect the secondary drainage pipe 60 to the main drainage pipe 61, and provide a partition wall 62 in the bathtub drainage trap section 2 Patent Document 1 discloses that the drainage is difficult to flow back to the bathtub floor pan side.

However, in the above conventional example, the drainage from the bathtub through which the largest amount of drainage flows flows into the main drainage pipe 61 from the bathtub drainage trap portion 2 through the sub drainage pipe 60 to the main drainage pipe 61. Since the water flows into the main drainage pipe 61 from the sub drainage pipe 60 because it crosses and flows into the main drainage pipe 61 violently collides with the inner surface of the main drainage pipe 61, the flow is disturbed. In addition, a part of the large amount of drainage flowing from the bathtub that has violently collided with the inner surface of the main drain pipe 61 may flow not only to the downstream side of the main drain pipe 61 but also to the upstream side and backflow to the washing ground drain trap unit 6 side. In addition, even though the partition wall 62 is provided in the bathtub drain trap part 2, a part of the drainage from the large amount of bathtub flowing through the auxiliary drain pipe 60 flows backward from the tip end portion of the partition wall 62 and the bathtub floor pan side To regurgitate There is a problem. In addition, when drainage from the bathtub drain trap unit 2 and drainage from the washroom drain trap unit 6 are performed at the same time, the drainage from the main drainage pipe 61 and the auxiliary drainage at the intersection of the subdrainage pipe 60 to the main drainage pipe 61 are performed. The drainage from the drainage pipe 60 merges, and both collide violently and disturb, so neither the drainage from the bathtub drainage trap part 2 nor the drainage from the washing ground drainage trap part 6 flows smoothly. Since the amount of drainage from the trap part 2 is large, the drainage from the washing place drain trap part 6 tends to stagnate, and there is a problem that water stays temporarily in the washing place floor pan.
JP-A-2005-282123

  The present invention was invented in view of the above-mentioned conventional problems, and drained smoothly from a bathtub, drained from a floor pan for a bathtub, and drained from a floor floor for a washing place with reduced pressure loss. In addition, when flowing a large amount of drainage from the bathtub, it is possible to reliably prevent backflow into the bathtub floor pan and the washing floor floor pan, and to shorten the piping and reduce the space required for drainage as much as possible. The issue is to provide.

In order to solve the above problems, the drainage structure of a bathroom according to the present invention is a bathtub drain trap section 2 through which drainage from the bathtub 1 flows and a bathtub floor pan through which drainage from the bathtub floor pan 3 in which the bathtub 1 is installed flows. A drainage trap section 4 and a washing ground drain trap section 6 through which drainage from the washing floor floor pan 5 flows, a first drainage path 7 through which drainage discharged from the bathtub drain trap section 2 flows, and a drain trap section for bathtub floor pan The second drainage channel 8 through which the drainage discharged from 4 flows and the third drainage channel 9 through which the drainage discharged from the washing ground drain trap unit 6 merges at the junction 10 and drains through the common drain pipe 11 a is, the first drainage channel 7, the second drainage channel 8, the addition to parallel portions extending in the transverse direction confluent portion 10 of the third drainage path 9, the first waste water arranged in the horizontal direction Road 7, second drainage channel 8, third drainage The outlet portions 12, 13, and 14 on the downstream side of the passage 9 are communicated with the merging portion 10, and the discharge direction of drainage from the respective outlet portions 12, 13, and 14 to the merging portion 10 is substantially parallel, The outlet portion 12 of the first drainage channel 7 through which the drainage from the bathtub 1 flows is arranged in parallel to one side of the outlet portion 14 of the third drainage channel 9 through which the drainage from the washing floor floor pan 5 flows. The outlet portion 13 of the second drainage channel 8 through which drainage from the bathtub floor pan 3 flows is arranged in parallel on the other side in the lateral direction of the outlet portion 14 of the third drainage channel 9. is there.

  By adopting such a configuration, the drainage from the bathtub 1, the drainage from the bathtub floor pan 3, and the drainage from the washing place are respectively the bathtub drain trap part 2, the bathtub floor drain trap part 4, and the washing place drain trap part 6. The water is sealed individually to ensure the sealing of the drainage of the three different systems, and each is a separate drainage channel from the bathtub drain trap part 2, the bathtub floor drain trap part 4, and the washing ground drain trap part 6. Since water is drained individually into the first, second and third drainage channels 7, 8 and 9, and the drainage flowing through the three individual drainage channels is merged at one junction 10, the drainage from the bathtub 1, the bathtub Both the drainage from the floor pan 3 for washing and the drainage from the washing floor pan 5 can be smoothly drained with reduced pressure loss, and a large amount of drainage from the bathtub 1 flowing from the bathtub drain trap section 2 Side, wash floor floor 5, and the outlets 12, 13, 14 of the first, second, and third drainage channels 7, 8, 9 are joined at the junction 10 and drained by the common drainage pipe 11. In addition, since the portions of the first, second, and third drainage channels 7, 8, 9 that reach the junction 10 are arranged in the horizontal direction, the first, second, and third drainage channels 7, 8, 9 are drained. The pipe length is shorter than that connected to the pipe 11 at different locations, and the three drainage channels are provided in a narrow space in the vertical direction and compact in the horizontal direction even though three drainage channels are provided. In addition, the height of the sealed water of the three trap portions can be suppressed to substantially the same height, and the height of the entire trap device can also be suppressed in this respect.

Further, the outlet portions 12, 13, and 14 on the downstream side of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 arranged in parallel in the lateral direction are communicated with the merging unit 10, and each outlet unit 12, Since the discharge direction of the wastewater from the 13, 14 to the junction 10 is substantially parallel, the wastewater flowing from the outlet of each drainage channel with a simple configuration is difficult to flow back to another drainage channel. In addition, since the drainage direction of the drainage from the three outlet portions 12, 13, 14 to the merging portion 10 is substantially parallel, the lateral dimension of the portion where the three outlet portions 12, 13, 14 are provided can be shortened. Compactness can be achieved.

The reason why the reverse flow of the drainage is a problem is that when the drainage from the bathtub 1 is flowed in large quantities, the trap section has the smallest capacity and the reverse flow to the drainage trap section 4 for the bathtub floor pan is the problem. As described above, the outlet portion 12 of the first drainage channel 7 through which the drainage from the bathtub 1 flows is arranged in parallel to the lateral side of the outlet portion 14 of the third drainage channel 9 through which the drainage from the washing floor pan 5 flows. In addition, since the outlet portion 13 of the second drainage channel 8 through which the drainage from the bathtub floor pan 3 flows is arranged in parallel on the other side in the lateral direction of the outlet portion 14 of the third drainage channel 9, there are three outlets arranged in parallel. 12, 13, and 14, the outlet 12 of the first drainage channel 7 through which the largest amount of drainage flows to the junction 10, and the second drainage channel 8 connected to the drainage trap unit 4 for the bathtub floor pan with the smallest capacity The outlet part 14 is not adjacent to the drainage trap part 4 for the bathtub floor pan between the two. Since the exit part 14 of the 3rd drainage channel 9 connected to the washing ground drain trap part 6 with a large capacity | capacitance is located, it joins from the exit part 12 of the 1st drainage channel 7 with respect to the exit part 13 of the 2nd drainage channel 8 Even if a situation occurs in which the drainage from the bathtub 1 flows backward from the outlet portion 12 of the first drainage channel 7 to the junction 10, the adjacent washing ground drainage trap does not easily receive the dynamic pressure of the drainage flowing through the channel 10. It flows backward from the outlet part 14 of the third drainage channel 9 communicating with the part 6 to the washing ground drainage trap part 6 side, and does not backflow from the outlet part 13 of the second drainage channel 8 far away. Backflow to the bathtub floor pan 3 over the small bathtub floor pan drain trap 4 is prevented.

  Moreover, it is preferable that the lower end of the outlet portion 13 of the second drainage channel 8 is positioned above the lower end of the outlet portion 14 of the third drainage channel 9.

  By adopting such a configuration, even if a situation occurs in which the drainage from the bathtub 1 flows backward when flowing from the outlet portion 12 of the first drainage channel 7 to the merge portion 10, Backflow from the outlet portion 14 of the communicating third drainage channel 9 to the washing ground drainage trap unit 6 side and backflow to the small-capacity bathtub floor pan drainage trap unit 4 side are prevented, and for a small capacity bathtub floor pan Backflow to the bathtub floor pan 3 over the drain trap portion 4 is prevented.

  Also, the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 are integrally formed in the washing site side trap body portion 16 that is a portion for storing water for sealing in the washing site drainage trap unit 4. Is preferred.

  In this way, the first drainage channel 7, the second drainage channel 8, the third drainage channel 9, and the junction 10 are integrally formed in the washing plant side trap body 16 of the washing plant drain trap unit 6. In what is drained and merged from two flow paths, the three drainage channels and the merge part 10 can be combined into the washing place trap body 6, the flow path length is shortened and the structure is simplified and compact. Space can be narrowed.

  The present invention can smoothly drain drainage from a bathtub, drainage from a floor pan for a bathtub, and drainage from a washing floor floor pan with reduced pressure loss. It is possible to reliably prevent backflow to the floor pan and the washing floor floor pan, and to shorten the piping as much as possible and to reduce the space required for drainage, to make the drainage device compact and easy to install, There is an advantage that the height required for the arrangement of the drainage device can be lowered.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The bathroom unit A constituting the bathroom is provided with an entrance / exit frame having a wall panel and a door around a floor pan composed of a floor pan 3 for a bathtub in which the bathtub 1 is installed and a washing floor pan 5. A ceiling panel is arranged at the upper end of the part surrounded by the panel and the entrance / exit frame.

  There are three types of drainage from the bathroom unit A: drainage of hot water from the bathtub 1, drainage of hot water from the floor pan 3 for the bathtub where the bathtub 1 is installed, and drainage of hot water from the wash floor floor pan 5. In the present invention, the three kinds of traps through which the three kinds of wastewater flow individually, that is, the drainage from the bathtub drain trap section 2 through which the drainage from the bathtub 1 flows and the floor pan 3 for the bathtub in which the bathtub 1 is installed are discharged. A draining trap section 4 for flowing bathtub floor pan and a washing ground drain trap section 6 through which drainage from the washing floor floor pan 5 flows are provided.

  In the embodiment shown in the accompanying drawings, the trap device 22 described below is provided with a bathtub drain trap part 2, a bathtub floor drain trap part 4, and a washing place drain trap part 6.

  2 and 3, the trap device 22 includes a bathtub-side trap body 23, a bathtub-side fixing upper cylinder 24, a bathtub-side sealing cylinder 25, a washing-side trap body 16, and a body lid 43. The washing station side fixing upper cylinder 15 and the washing area side sealing cylinder 17 are constituted.

  The bathtub-side trap main body 23 is the main body of the bathtub drain trap part 2, and has a bottomed cylindrical shape with an upper opening as shown in FIG. 7, and a flange portion 26 is integrally provided on the outer periphery of the upper end opening. In addition, a first drain tube portion 27 communicating with the inside of the bathtub-side trap body portion 23 is integrally projected outwardly on the side wall of the bathtub-side trap body portion 23 having a bottomed cylindrical shape. Moreover, the internal thread part is formed in the inner peripheral upper end part of the bathtub side trap main-body part 23, and the inner cylinder part 28 toward the upper direction in the position eccentric from the center of the bottom part of the bathtub-side trap main body part 23 Is protruded integrally upward, and further, a second drain cylinder 29 having one end opened into the inner cylinder 28 extends along the bottom of the bathtub-side trap body 23. And projecting integrally in the lateral direction outwardly. In the portion along the bottom of the bathtub-side trap body 23 of the second drain cylinder 29, the bottom of the bathtub-side trap body 23 also serves as the bottom of the second drain cylinder 29 as shown in FIG. Yes. In addition, a plurality of protrusions 53 project upward from the bottom of the bathtub-side trap body 23, and the upper surface of the protrusion 53 and the bottom of the bathtub-side trap body 23 of the second drainage cylinder 29 are provided. The upper surface of the portion along the line is at the same level.

  The bathtub-side fixing upper cylinder 24 is integrally provided with a flange portion 30 at the upper end and is provided with a male screw portion on the outer peripheral portion. The bathtub-side fixing upper cylinder 24 is inserted from above into a hole 31 provided in the bathtub floor pan 3, and is arranged so that the upper opening communicates with the hole 31 on the lower surface side of the bathtub floor pan 3. 1 is screwed into the female threaded portion at the inner peripheral upper end of the portion 23, and the bathtub floor pan 3 is sandwiched by the flange portions 30 and 26 from above and below, so that the bathtub floor pan 3 is attached to the bathtub floor pan 3 as shown in FIG. The trap body 23 and the bathtub-side fixing upper cylinder 24 are fixedly attached.

  As shown in FIG. 8, the bathtub-side seal tube 25 has a fitting portion 25 a whose upper end portion has a larger outer diameter than the lower portion, and a packing 33 is provided on the outer periphery of the fitting portion 25 a. The upper end is closed by an integrally formed lid plate 32, and a bath drain hole 34 and a floor pan drain hole 35 are provided at a position eccentric from the lid plate 32. FIG. As shown in FIG. 1, a hanging cylinder portion 36 is integrally suspended downward from the floor pan drain hole 35.

  The bathtub-side sealing cylinder 25 is hermetically fitted by being inserted into the bathtub-side fixing upper cylinder 24 from above and the packing 33 provided in the fitting portion 25 a being pressed against the inner peripheral surface of the bathtub-side fixing upper cylinder 24. . In this case, as shown in FIG. 2, the bathtub-side sealing tube 25 is sealed until the lower end of the bathtub-side sealing tube 25 hits the upper surface of the projection 53 and the upper surface of the portion along the bottom of the bathtub-side trap body 23 of the second drainage tube 29. By pushing in the water bottle 25, the lower end of the bathtub-side water sealing cylinder 25 can be positioned reliably, and a certain sealing water height can be secured. Accordingly, when the bathtub-side sealing cylinder 25 is attached to the bathtub-side fixing upper cylinder 24 by screwing, the sealing water height varies depending on the screwing depth. Compared to the conventional example in which the length of the bathtub-side water seal tube 25 must be given a certain length in advance so that the seal water height (5 cm) specified by law can be secured. Even if the length of the bathtub-side sealing tube 25 is shortened, the sealing water height (5 cm) stipulated by the law can be secured, so that the height of the device can be kept low and the thickness can be reduced. Become.

  By fitting the bathtub-side sealed cylinder 25 into the bathtub-side fixing upper cylinder 24 in an airtight manner as described above, the bathtub-side sealed cylinder 25 is provided between the lower end of the bathtub-side sealed cylinder 25 and the bottom of the bathtub-side trap body 23. 25, a communication portion 38 is formed to communicate the gap 37 between the inner surface of the bathtub-side trap main body portion 23 and the outer surface of the bathtub-side seal tube 25. The drainage hole 34 for the bathtub, the bathtub-side seal tube 25, the communication part 38, and the 1st drain cylinder part 27 are connecting.

  In addition, with the bathtub-side sealing cylinder 25 fitted in the bathtub-side fixing upper cylinder 24 in an airtight manner, a drooping cylinder portion 36 that hangs down from the cover plate 32 of the bathtub-side sealing cylinder 25 is fitted into the inner cylinder portion 28, A packing 40 is interposed between the cylindrical portion 36 and the inner cylindrical portion 28 or between the inner cylindrical portion 28 and the lower surface of the cover plate 32 and is hermetically connected to each other. The floor pan drain hole 35, the hanging cylindrical portion 36, and the inner cylindrical portion 28, the 2nd drain cylinder part 29 is connecting.

  As shown in FIG. 9, the washing field side trap body 16 has a bottomed cylindrical shape with an open top, and a substantially L-shaped cylindrical shape is formed at the lower part of the washing field side trap body 16 along one half of the outer periphery. The rising cylindrical portion 20a of the connecting portion 20 is integrally provided, and the rising cylindrical portion 20a has a cross-sectional area that increases toward the upper side, and the washing place side trap main body portion communicates with the upper opening of the rising cylindrical portion 20a. A first drainage channel 7 is integrally formed along one half of the upper outer periphery of 16.

  In addition, a third drainage channel 9 having a groove shape with an upper opening communicating with the washing station side trap body 16 is integrally formed along the other half of the other outer peripheral portion of the upper part of the washing station side trap body 16. In addition, a groove-shaped second drainage channel 8 that opens further upward is integrally formed on the outside of the third drainage channel 9, and the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 are substantially the same. Side by side at the same level. The downstream end portions of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 gather at one place and merge at a junction 10 provided at one end of the washing place side trap body 16.

  A main body as shown in FIG. 10 is provided at the upper end portion of the bottomed tubular trap body portion 16 having a bottomed tube shape in which the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 are integrally formed. A lid 43 is attached, and the upper openings of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 having a groove shape are closed, and a hole 44 provided in the main body lid 43 has a bottomed cylindrical washing place The side trap body 16 communicates with the upper opening.

  Further, a rising cylinder portion 21 a of the connection portion 21 having a substantially L-shaped cylindrical shape is integrally formed on the lower surface portion of the upstream end of the second drainage channel 8 so as to communicate with the second drainage channel 8.

  The horizontal tube portion of the connecting portion 20 is connected to the first drain tube portion 27 projecting laterally from the bathtub-side trap body portion 23, and the connection portion 21 extends from the bathtub-side trap body portion 23. The second drain cylinder part 29 projecting in the lateral direction is connected in communication. Here, the front end portions of the horizontal cylinder portions of the connection portions 20 and 21 are parallel, and the front end portions of the first drainage cylinder portion 27 and the second drainage cylinder portion 29 are parallel. These horizontal tube portions can be simultaneously fitted and connected to the first drain tube portion 27 and the second drain tube portion 29.

  The level of the communicating portion with the first drainage channel 7 which is the upper end of the connecting portion 20 is in contact with the upper surface of the projection 53 and the upper surface of the portion along the bottom of the bathtub-side trap body portion 23 of the second drainage cylinder portion 29. The level is a certain height higher than the lower end of the bathtub-side sealing cylinder 25 positioned (that is, 5 cm which is the sealing water height determined by law, or slightly higher than 5 cm). Therefore, a puddle for sealing water communicating with the inside and outside of the bathtub-side sealing cylinder 25 is formed via the communication portion 38 between the lower end of the bathtub-side sealing cylinder 25 and the bottom of the bathtub-side trap body 23. The bathtub drain trap part 2 is comprised.

  In addition, the level of the communication portion with the second drainage channel 8 that is the upper end of the connection portion 21 is a certain height higher than the communication portion with the second drainage tube portion 29 at the lower end portion of the drooping cylinder portion 36 (that is, legally The level of the sealed water is 5 cm, or slightly higher than 5 cm). Therefore, a reservoir for sealing water is formed over the inner cylinder part 28, the second drainage cylinder part 29, and the connection part 20 having an L-shaped cylinder with the second drainage cylinder part 29 as the lowermost end. A drain trap part 4 is configured.

  Moreover, each downstream end of the said 1st drainage channel 7, the 2nd drainage channel 8, and the 3rd drainage channel 9 becomes the exit parts 12, 13, and 14, respectively, and the three exit parts 12, 13, and 14 are one place. Open to and communicate with the tubular confluence 10 gathered together. A drain pipe 11 is connected to the junction 10. In the embodiment shown in the figure, the upstream end of the drain pipe 11 is fitted and connected to the cylindrical junction 10, so that the end of the drain pipe 11 is a substantial drainage junction. That is, the three outlet portions 12, 13, and 14 merge at one merge portion 10, and the merge portion 10 also serves as a connection portion with the drain pipe 11.

  Here, the discharge direction of the drainage from each of the outlet portions 12, 13, and 14 to the merging portion 10 is substantially parallel.

  Further, in the arrangement of the three outlet portions 12, 13, 14 arranged side by side, the outlet portion 12 of the first drainage channel 7 is arranged in parallel on one side in the lateral direction of the outlet portion 14 of the third drainage channel 9. The outlet portion 13 of the second drainage channel 8 is juxtaposed in the lateral direction on the other side in the lateral direction of the outlet portion 14 of the third drainage channel 9.

  Further, as shown in FIGS. 6 and 9, the lower end of the outlet portion 12 of the first drainage channel 7 and the lower end of the outlet portion 13 of the second drainage channel 8 are higher than the lower end of the outlet portion 14 of the third drainage channel 9. A step portion 39 is provided between the lower end of the outlet portion 12 of the first drainage channel 7, the lower end of the outlet portion 13 of the second drainage channel 8, and the bottom portion of the merging portion 10.

  Further, a protrusion 45 is provided on the bottom of the washing place side trap body 16 upward.

  The washing tube side fixing upper cylinder 15 is integrally provided with a flange portion 46 at the upper end and a male screw portion on the outer peripheral portion. The washing-place-side fixing upper cylinder 15 is inserted from above into the hole 47 provided in the washing-room floor pan 5, and the body lid 43 is disposed on the lower surface side of the washing-room floor pan 5 so that the hole 44 communicates with the hole 47. 1, the washing floor floor pan 5 is sandwiched between the flange 46 and the main body lid 43 from above and below as shown in FIG. The trap body 16 and the washing-place-side fixing upper cylinder 15 are fixedly attached.

  The washing station side sealing cylinder 17 has a fitting part 17a whose upper end portion has an outer diameter larger than that of the lower part. A packing 48 is provided on the outer periphery of the fitting part 17a. The upper end of the washing station side sealing cylinder 17 is a drainage hole for washing station. 50.

  The washing area side sealing cylinder 17 is inserted into the washing area side fixing upper cylinder 15 from above, and the packing 48 provided in the fitting portion 17a is pressed into contact with the inner peripheral surface of the washing area side fixing upper cylinder 15 so as to be airtightly fitted. . In this case, the lower end of the washing station side sealing cylinder 17 can be surely positioned by pushing the washing station side sealing cylinder 17 until the lower end of the washing station side sealing cylinder 17 hits the upper surface of the projection 45, and a certain sealing height is secured. it can. Accordingly, when the washing place side sealing cylinder 17 is attached to the washing place side fixing upper cylinder 15 by screwing, the sealing water height varies depending on the screwing depth. Compared to the conventional example in which the length of the water-sealing-side water sealing tube 17 has to be provided with a margin in advance so that the sealing water height (5 cm) prescribed by law can be secured. Even if the length of the washing-side sealing tube 17 is shortened, the sealing water height (5 cm) stipulated by the law can be secured, so that the height of the device can be kept low and the thickness can be reduced. Become.

  As described above, the washing station side sealing cylinder 17 is hermetically fitted into the washing station side fixing upper cylinder 15 so that the washing station side sealing cylinder is interposed between the lower end of the washing station side sealing cylinder 17 and the bottom of the washing station side trap body 16. 17, a communication part 19 is formed to communicate the gap 18 between the inside of the washing body side trap body 16 and the outer surface of the washing room side sealing cylinder 17. The inside of the water sealing cylinder 17, the communication part 19, and the clearance gap 18 will communicate. The upper end of the gap 18 communicates with the third drainage channel 9, and the communicating part between the gap 18 and the third drainage channel 9 from the lower end of the washing station side sealing cylinder 17 positioned by being placed on the protrusion 45. The upper and lower lengths up to the lowermost end (that is, the upper end of the partition wall 16a between the gap 18 and the third drainage channel 9) are the sealing height, and the sealing height is determined by law. The height is 5 cm, or a length slightly higher than 5 cm. Therefore, the washing ground drain trap section 6 is configured by forming a water reservoir for sealing water communicating with the inside and outside of the washing place side sealing cylinder 17 through the communication portion 19.

  The upstream side of the third drainage channel 9 is lower than the upper end of the partition wall 16a between the bottomed cylindrical washing body side trap body 16 and a step 16b between the upstream side and the downstream side. Is formed, and the downstream side is lower than the upstream side.

  The bathtub 1 is placed on the bathtub floor pan 3, and in this case, the upper end of the bathtub-side sealed cylinder 25 is connected to the bottom end of the drain 51 provided on the bottom of the bathtub 1 via the seal member 52. It fits in the drainage hole 34 for bathtubs provided in the lid plate 32.

  In the drainage structure as described above, the drainage from the bathtub 1 has the largest drainage, the next largest drainage is the drainage from the washing floor pan 5, and the drainage from the bathtub floor pan 3 is the smallest. That is, in the bathtub floor pan 3, water that has entered the seal portion between the upper flange of the bathtub 1 and the wall panel is broken, or the boundary portion between the washing floor pan 5 and the bathtub floor pan 3 from the washing floor pan 5 side. Since the water that has entered the bathtub floor pan 3 through the dam 54 is drained, the amount of drainage is less than the drainage from the bathtub 1 and the washing floor pan 5.

  The drainage of the bathtub 1 flows from the bathtub drain trap portion 2 to the first drainage channel 7, flows from the outlet portion 12 at the downstream end of the first drainage channel 7 to the junction portion 10, and flows out to the drainage pipe 11. The wastewater from the washing floor floor pan 5 flows from the washing ground drain trap 6 to the third drainage channel 9, flows from the outlet 14 at the downstream end of the third drainage channel 9 to the junction 10, and flows out to the drainage pipe 11. The drainage of the bathtub floor pan 3 flows from the bathtub floor pan drain trap 4 to the second drainage channel 8, and flows from the outlet 13 at the downstream end of the second drainage channel 8 to the junction 10 to drain the pipe. It flows out to 11.

  In this way, in the present invention, the three different drains of the drainage of the bathtub 1, the drainage of the washing floor floor pan 5, and the drainage of the bathtub floor pan 3 are respectively separated into the bathtub drain trap part 2 and the bathtub floor pan drain trap part 4 respectively. In addition, by individually sealing the water in the washing place drain trap section 6, it is possible to reliably seal the drainage points at three different locations. In addition, each of the above-mentioned three drainage trap parts 2, the bathtub floor pan drainage trap part 4, and the washing place drainage trap part 6 is individually drained into first, second, and third drainage paths 8, which are individual drainage paths. Since the drainage flowing through the individual drainage channels is merged at one junction 10, the drainage from the bathtub 1, the drainage from the bathtub floor pan 3, and the drainage from the washing floor pan 5 are all reduced in pressure loss. The drainage from the bathtub 1 flowing from the bathtub drain trap portion 2 can be smoothly drained, and it is difficult for the drainage from the bathtub drain pan portion 2 to flow back to the bathtub floor pan 3 side and the washing floor floor pan 5 side.

  Here, the discharge direction of the drainage to the confluence 10 of the downstream outlets 12, 13, and 14 of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 arranged side by side is almost the same. Since it is parallel, the drainage flowing from the outlet of each drainage channel is difficult to flow back to another drainage channel, and as in the embodiment shown in FIGS. 9 (a), 9 (b) and 9 (c). By configuring so that the drainage direction of the drainage to the junction 10 of each of the outlet portions 12, 13, and 14 is the same as the drainage direction from the junction 10, the reverse flow is more difficult to perform.

  Furthermore, as shown in FIG. 9 (c), the outlet 12 of the first drainage channel 7 through which the largest amount of drainage flows among the three outlets 12, 13, and 14 arranged in parallel, and the most capacity. The washing area drain trap section 6 having a capacity larger than that of the bathtub floor pan drain trap section 4 is not adjacent to the outlet section 14 of the second drain path 8 connected to the small bathtub floor pan drain trap section 4. Since the outlet portion 14 of the third drainage channel 9 communicating with the drainage channel 9 is positioned, the drainage from the bathtub 1 flows backward when flowing from the outlet portion 12 of the first drainage channel 7 to the junction 10. Even if such a situation occurs, the second drainage channel that is far away will flow backward from the outlet 14 of the third drainage channel 9 communicating with the adjacent flushing drainage trap unit 6 to the washing plant drainage trap unit 6 side. It is possible to prevent backflow from the eight outlet portions 13. Therefore, it is prevented from flowing back to the bathtub floor pan 3 over the bathtub floor pan drain trap 4 having a small capacity.

  9C, the lower end of the outlet portion 13 of the second drainage channel 8 is positioned above the lower end of the outlet portion 14 of the third drainage channel 9, so that the drainage from the bathtub 1 can be performed. Even if a situation occurs in which a reverse flow occurs when flowing from the outlet portion 12 of the first drainage channel 7 to the merging portion 10, the washroom drainage trap from the outlet portion 14 of the third drainage channel 9 communicating with the washing plant drainage trap unit 6. Backflow to the section 6 side and backflow to the small-capacity bathtub floor pan drain trap section 4 side are prevented, and the counterflow flows back to the bathtub floor pan 3 beyond the small-capacity bathtub floor pan drain trap section 4. Is prevented. In this case, as shown in FIG. 9C, the outlet 12 of the first drainage channel 7 and the outlet 14 of the second drainage channel 8 connected to the bathtub floor pan drain trap 4 having the smallest capacity are provided. By being configured so that the outlet part 14 of the third drainage channel 9 communicating with the washing place drainage trap part 6 having a capacity larger than that of the bathtub floor pan drainage trap part 4 is located between the two, not adjacent to each other. Further backflow to the bathtub floor drain trap part 4 side can be prevented.

  In addition, since the lower end of the outlet portion 14 of the third drainage channel 9 is located below the lower end of the outlet portion 14 of the first drainage channel 7, the outlet portion 14 of the first drainage channel 7 reaches the junction 10 most. When drainage from the bathtub 1 is flowing while the drainage of the bathtub 1 having a large drainage flow is flowing, drainage from the washing floor pan 5 flows from the outlet 12 of the first drainage channel 7 to the junction 10. It is possible to smoothly flow from the outlet portion 14 to the joining portion 10 from a position slightly lower than the inflow position. Moreover, since the lower end of the outlet part 14 is located below the outlet part 12, the drainage of the bathtub 1 having the highest drainage flow from the outlet part 12 of the first drainage channel 7 to the joining part 10 flows to the joining part 10. However, in this case, since there is a step 16b between the upstream side and the downstream side of the third drainage channel 9, the backflow can be prevented. Since there is the partition wall 16a, the backflow can be prevented here.

  If the wall portion between the outlet portions 12 and 13 and the end portion of the wall between the outlet portions 13 and 14 in the merging portion 10 are formed of a soft material or a fin that is movable by hinge means, Can change the area of the outlet parts 12, 13, and 14, and the optimum flow rate can be adjusted. Also, when the drainage flow rate from a certain outlet part increases and the opening area increases, the opening area of the adjacent outlet part becomes larger. Since it becomes small, the backflow from the next exit part can be prevented further.

  In this case, you may make it close an exit part with a fin, when a positive pressure is applied, or at the time of backflow.

It is sectional drawing of the drainage structure of the bathroom of this invention. It is sectional drawing of the trap apparatus used for the same as the above. (A) is the perspective view seen from the one side surface in the state which abbreviate | omitted the washing place side sealing cylinder in the trap apparatus same as the above, (b) is the perspective view seen from the other side surface side. It is a perspective view in the state where the upper cylinder for bathtub side fixation, the bathtub side sealing cylinder, the body lid, the upper cylinder for washing place side fixing, and the washing place side sealing cylinder were omitted in the trap device same as above. It is a top view of the state which abbreviate | omitted the upper cylinder for bathtub side fixing, the bathtub side sealing cylinder, a main body cover, the washing top side fixing upper cylinder, and the washing place side sealing cylinder in the trap apparatus same as the above. It is the front view seen from the downstream of the trap apparatus same as the above. The bathtub side trap main body used for the same as the above is shown, (a) is a perspective view, (b) is a plan view, (c) is a front view, and (d) is a side view. It is a perspective view of the bathtub side sealing cylinder used for the same as the above. The washing place side trap main-body part used for the above is shown, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a side view. It is a perspective view of the main body cover used for the same as the above. It is a top view of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathtub 2 Bathtub drain trap part 3 Bath floor pan 4 Bath bed pan drain trap part 5 Washing floor floor pan 6 Washing place drain trap part 7 1st drainage path 8 2nd drainage path 9 3rd drainage path 10 Merge part 11 Drainage pipe DESCRIPTION OF SYMBOLS 12 Outlet part 13 Outlet part 14 Outlet part 16 Trap main-body part 17 Washing area side sealing cylinder 18 Crevice 19 Communication part 20 Connection part 21 Connection part

Claims (3)

It has a bathtub drain trap section where drainage from the bathtub flows, a bathtub floor drain trap section where drainage from the floor pan for the bathtub where the bathtub is installed, and a washing ground drain trap section where drainage from the wash floor pan flows, a first drainage channel drainage flows discharged from the bath drain trap portion, bathtubs and second drainages bed waste water discharged from the pan drain trap portion flows, a third flow is waste water discharged from the washing space drain trap portion be those drained by a common drainage pipe by merging the drainage channel at the merging portion, the first drainage channel, said second drainage channel, parallel portions extending in the merging portion of the third drainage channel laterally In addition, the downstream outlet portions of the first drainage channel, the second drainage channel, and the third drainage channel arranged in parallel in the lateral direction are communicated with the merging portion, and from the respective outlet portions to the merging portion. The discharge direction of the waste water is almost parallel An outlet portion of the first drainage channel through which drainage from the bathtub flows parallel to one side of the outlet portion of the third drainage channel through which drainage from the washing floor floor pan flows and the third drainage channel of the third drainage channel A drainage structure for a bathroom, characterized in that an outlet portion of the second drainage channel through which drainage from the bathtub floor pan flows is provided in parallel on the other side in the horizontal direction of the outlet portion . The bathroom drainage structure according to claim 1, wherein the lower end of the outlet portion of the second drainage channel is positioned above the lower end of the outlet portion of the third drainage channel . The first drainage channel, the second drainage channel, the third drainage channel, and the merging unit are integrally formed on the washing site side trap main body which is a portion for storing water for sealing in the washing site drainage trap unit. It is made Te characterized by claim 1 or claim 2 drainage structure of the bathroom described.

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