JP2010174603A - Piping structure reducing drain noise - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping structure which reduces generation of drain noise in piping, especially in the vicinity of a bent portion, which is a receiver of the drainage water, at a lower floor. <P>SOLUTION: As a vertical pipe 2 is installed to be slanted relative to a perpendicular line and a drainage-water induction guide is provided on an inner wall portion of an elbow pipe 5 (6), although the piping is continuous by comprising a horizontal pipe 3 (4), the vertical pipe 2, and the elbow pipe 5 (6) connecting the horizontal pipe 3 (4) and the vertical pipe 2, the drainage water flowing in the piping flows down along the inner wall surface of the piping, whereby generation of solid-borne sound due to as impact caused by free fall of the drainage water and generation of air-borne sound due to water spray can be reduced or eliminated. Accordingly, the generation of the drain noise in the drain piping can be reduced or eliminated. Noise insulation measures provided to the piping for preventing the generation of the solid-borne sound and the air-borne sound can be eliminated or reduced to achieve improvement in construction workability and cost reduction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a piping structure that reduces drainage noise.

  When water facilities such as toilets, washrooms, kitchens, etc. are provided on the second and third floors of a house, etc., a pipe for leading the drainage down to the first floor is provided.

  As shown in FIG. 10, horizontal pipes between floors and under the floor are installed in parallel so that the drainage flows in the direction of drainage without staying, for example, with a slope of 1% or more, and pipes that are continuous in multiple floors. Dredging pipes are installed vertically in the space. The horizontal piping between floors and the vertical piping in the pipe space are connected by elbows bent at 90 °, and the vertical piping in the pipe space and the horizontal piping under the floor have a radius of curvature bent at 90 °. It is connected by a large large elbow.

JP 2003-232058 A

  During drainage, when drainage passes through the horizontal pipe between floors and under the floor, it flows along the bottom surface of the inner wall of the pipe. Free fall. Therefore, solid-propagating sound is generated by the vibration of the pipe due to the drainage of the free-falling water colliding with the pipe wall around the bent portion on the lower floor side. In addition, air-borne sound is generated due to the splash of water generated by free fall of drainage or collision with the pipe wall.

  As a measure against solid-borne sound, the pipe is supported on a soundproofing material attached around the pipe to prevent vibration of the pipe. In addition, soundproofing materials are installed around the pipes as measures against airborne sound.

  In particular, there is a large amount of noise around the lower-floor bent portion of the lower floor, which is the drainage receiver, and soundproofing materials must be installed over a wide range of local sound sources. Even inefficient measures.

  In view of the problems as described above, an object of the present invention is to provide a piping structure that reduces the generation of drainage sound in the piping, particularly around the lower-floor bent portion that is a drainage receiver.

The above problem is a piping structure that reduces the drainage sound of drainage piping in which horizontal piping and vertical piping in a building are continuous,
Consists of horizontal piping, vertical piping, and elbow piping that connects horizontal piping and vertical piping.
The vertical pipe is attached with an inclination to the vertical direction,
The elbow pipe has a drainage guide on its inner wall,
This is solved by a piping structure that reduces drainage noise, characterized in that the bottom surface of the inner wall of the horizontal piping, the drainage guide in the elbow, and the inclined surface of the inner wall of the vertical piping are continuous.

  In this piping structure, the dredging pipe is installed with an inclination with respect to the vertical, and the drainage guide is provided on the inner wall of the elbow pipe. Even if it is a continuous pipe consisting of connected elbow pipes, the drainage flowing through the pipe flows down along the inner wall surface of the pipe, so the generation of solid propagation noise due to the free fall impact of the drainage and the air propagation sound due to splashing Can be reduced or reduced, and the generation of drainage noise in the drainage pipe can be reduced or reduced. In addition, it is possible to reduce or reduce the soundproofing measures applied to the piping in order to prevent the generation of solid propagation sound and air propagation sound, and it is possible to improve workability and reduce costs.

  In addition, this piping structure can be realized simply by installing a drainage guide inside the elbow pipe or installing the dredging pipe with an inclination, so there is no need to install special space or equipment for soundproofing. This can be done without special changes to the building.

  In the above-described piping structure, the elbow pipe drain guide may be a groove on the inner wall of the elbow pipe formed along the drain direction.

  Since a groove is formed on the inner wall of the elbow pipe, the wastewater that passes through the elbow pipe flows along the groove on the inner wall of the elbow pipe. Therefore, the flow of the wastewater is adjusted in the elbow pipe, and solid propagation sound and air propagation sound are generated. Can be reduced or reduced.

  Moreover, in said piping structure, it is good in the elbow pipe | tube drainage guidance guide being at least 2 or more protrusion part of the elbow pipe inner wall provided along a drainage direction.

  Since there are at least two or more ridges provided along the direction of drainage on the inner wall of the elbow pipe, the drainage passing through the elbow pipe flows between the ridges on the inner wall of the elbow pipe. It is arranged and generation | occurrence | production of a solid propagation sound and an air propagation sound can be reduced or reduced.

  Further, the drainage guide of the elbow pipe may be a hydrophilic paint application section that is applied to the inner wall of the elbow pipe along the drainage direction.

  Since hydrophilic paint is applied to the inner wall of the elbow pipe along the direction of drainage, the waste water that passes through the elbow pipe flows through the application part of the inner wall of the elbow pipe where the hydrophilic paint is applied. Therefore, the flow of the waste water is adjusted in the elbow pipe, and generation of solid propagation sound and air propagation sound can be reduced or reduced.

  In the above piping structure, the elbow pipe may be a flexible elbow pipe.

  Since the elbow pipe is made of flexible piping, the flexible elbow pipe can be bent to an arbitrary angle, so horizontal drawing is possible regardless of the inclination angle of the vertical piping and the positional relationship between the horizontal piping and vertical piping. Piping and dredging can be connected without using a special attachment. In addition, since the flexible elbow pipe can be twisted in the circumferential direction of the pipe, draining the horizontal and vertical pipes by twisting the flexible elbow pipe in the circumferential direction regardless of the inclination direction of the vertical pipe with respect to the horizontal pipe. Connection can be made while the drainage surface is continuous.

  By using flexible piping, the horizontal piping and vertical piping can be connected to the horizontal piping and vertical piping without using an elbow for connection that matches the positional relationship between the horizontal piping and vertical piping. It is possible to form a pipe that flows through the wall surface without drainage falling freely.

  Since this invention is as above, the piping structure which reduces or reduces the generation | occurrence | production of the drainage sound in the lower floor side bending part used as the drainage receiver especially in piping can be provided.

It is a side view which shows the piping structure of 1st Embodiment. It shows the elbow pipe provided between the floor horizontal pipe and the vertical pipe, (A) is a side view, (B) is a cross-sectional view along line AA, (C) is a cross-sectional view along line BB, (D) is a side view showing a situation in which the floor horizontal piping, the elbow pipe, and the vertical pipe are connected. It shows a large elbow pipe provided between the vertical pipe and the underfloor horizontal pipe, (A) is a side view, (B) is a cross-sectional view along line AA, (C) is a cross-sectional view along line BB, (D) is a side view showing a situation in which the vertical pipe, the elbow pipe, and the underfloor horizontal pipe are connected. It is a side view which shows the piping structure of 2nd Embodiment. This figure shows the elbow pipe provided between the floor horizontal pipe and the vertical pipe. Figure (a) is a side view, Figure (b) is a cross-sectional view along line AA, and Figure (c) is a line BB. Sectional drawing, FIG. (D) is a side view showing a situation where the floor-to-floor horizontal pipe, the elbow pipe, and the vertical pipe are connected. This figure shows an elbow pipe provided between a vertical pipe and an underfloor horizontal pipe. Figure (A) is a side view, Figure (B) is a cross-sectional view along line AA, and Figure (C) is a cross-sectional view along line BB. FIG. 1 and FIG. 2 (D) are side views showing a state in which the saddle pipe, the elbow pipe, and the underfloor horizontal pipe are connected. The elbow pipe | tube used by the other Example of this invention is shown, A figure (A) is a side view, A figure (B) is an AA sectional view, A figure (C) is a BB sectional drawing. The elbow pipe | tube used by the other Example of this invention is shown, A figure (A) is a side view, A figure (B) is an AA sectional view, A figure (C) is a BB sectional drawing. Further, an elbow pipe used in another embodiment of the present invention is shown. FIG. (A) is a side view, FIG. (B) is a cross-sectional view taken along the line AA in FIG. The sectional view taken along the line B-B in FIG. (A), FIG. (D) is a side view showing a state where the elbow pipe is deformed, FIG. (E) is the sectional view taken along the line A-A in FIG. FIG. 4D is a sectional view taken along the line BB in FIG. 4D, and FIG. 4G is a sectional view taken along the line CC in FIG. It is a side view which shows the floor horizontal piping and the vertical piping of a prior art.

  Next, embodiments of the present invention will be described with reference to the drawings.

  In the piping structure 1 for reducing drainage sound of the embodiment shown in FIG. 1, 2 is a saddle pipe, 3 is an interfloor horizontal pipe disposed in the floor 8, and 4 is an underfloor horizontal pipe disposed in the floor 10. Piping 5 is an elbow pipe connecting the horizontal pipe 3 and the vertical pipe 2, 6 is a large elbow pipe connecting the vertical pipe 2 and the horizontal horizontal pipe 4, 7. It is a fixed hardware for fixing the pulling pipe 3 and the underfloor horizontal pulling pipe 4 to the housing. In the present embodiment, the piping structure of the present invention is continuously provided at two locations on the second floor portion and the first floor portion.

  This piping structure 1 includes an interfloor horizontal pipe 3 to 1 disposed between the first floor and the second floor 8 through which drainage from water facilities such as toilets, toilets, and kitchens provided on the second floor. It is made to flow through the vertical pipe 2 to the underfloor horizontal pipe 4 arranged under the floor. The saddle pipe is arranged in a pipe space provided in the wall surface of the first floor portion 9 and the like.

  The floor horizontal pipe 3 and the floor horizontal pipe 4 are both made of, for example, 100-mm-diameter cylindrical pipe made of polyvinyl chloride, and are directed toward the flow direction so that the water flows without remaining, for example, 1 It is fixed to the housing with the fixed hardware 7 with a gradient of at least%. The fixing to the frame may be a hanging type in which the pipe is suspended from the fixed hardware 7 fixed to the beam material, or a support type in which the pipe is received by the fixed hardware 7 fixed to the ground surface under the floor. .

  The saddle pipe 2 is also composed of, for example, a 100-mm-diameter cylindrical section pipe made of vinyl chloride in the same manner as the inter-floor horizontal pipe 3 and the under-floor horizontal pipe 4, and is vertically fixed with fixed hardware 7 on the side wall of the pipe space. It is tilted and fixed. In this embodiment, as shown in FIG. 1, the floor horizontal pipe 7 disposed in the floor 8, the dredging pipe 2 disposed in the pipe space of the first floor, and the floor 10 are disposed. Underfloor piping 4 is connected to each joint portion by an elbow pipe, and the crossing lines of interfloor horizontal piping 3 and vertical piping 2 and vertical piping 2 and underfloor horizontal piping 4 are each substantially S-shaped. ing.

  The elbow pipe 5 that connects the horizontal pipe 3 and the vertical pipe 2 shown in FIG. 2 is provided at the main body part 5a having a cylindrical cross section and at both ends of the main body part 5a. It consists of connecting portions 5b and 5c connected to the pipe 2. The bending angle θ <b> 1 of the elbow pipe 5 is set according to the angle at which the interlevel floor piping 3 and the vertical pipe 2 intersect.

  A part of the cross section of the main body 5a is provided with a groove 5d as a drainage guiding guide in a cylindrical shape, and the groove 5d is provided over the entire length of the elbow pipe 5 in the drainage direction in the pipe. The position where the groove 5d of the inner wall of the pipe is provided is determined by the positional relationship between the elbow pipe 5 and the floor horizontal pipe 3 and the vertical pipe 2 connected to both ends of the elbow pipe 5. As shown in the side view of the connecting portion of the interfloor horizontal pipe 3, the elbow pipe 5, and the vertical pipe 2 in FIG. 2 (d), the line of intersection between the horizontal horizontal pipe 3 and the vertical pipe 2 intersects at an obtuse angle. In this case, a groove 5d is provided along the inner wall of the elbow pipe 5 that is continuous with the bottom surface of the inner wall of the interlevel horizontal pipe 3 and on the curvature center side. Drainage that has passed through the elbow pipe 5 flows downward along the inclined inner wall surface of the inclined pipe 2. In the figure (D), 11 indicates the flow of drainage.

  The large elbow pipe 6 connecting the saddle pipe 2 and the underfloor horizontal pipe 4 shown in FIG. 3 is provided with a main body 6a having a cylindrical cross section and both ends of the main body 6a. 4, connecting portions 6 b and 6 c connected to 4. The bending angle θ2 of the large elbow pipe 6 is set in accordance with the angle at which the vertical pipe 2 and the underfloor horizontal pipe 4 intersect. The large elbow pipe is an elbow pipe having a larger radius of curvature than the elbow pipe.

  A cross section of the main body 6a is partially provided with a groove 6d as a drainage guide, and the groove 6d is provided over the entire length of the large elbow pipe 6 in the drainage direction. The position where the groove 6d on the inner wall of the pipe is provided is determined by the positional relationship between the large elbow pipe 6 and the vertical pipe 2 and the underfloor horizontal pipe 4 connected to both ends of the elbow pipe 6. As shown in the side view of the connecting part of the vertical pipe 2, the large elbow pipe 6, and the underfloor horizontal pipe 4 in FIG. 3 (d), the crossing line of the vertical pipe 2 and the underfloor horizontal pipe 4 intersects at an obtuse angle. A groove 6d is provided along the inner wall of the pipe opposite to the center of curvature of the large elbow pipe 6 that is continuous with the inclined surface of the inner wall of the saddle pipe 2. The drainage that has passed through the large elbow pipe 6 flows downward along the bottom surface of the inner wall of the inclined underfloor horizontal pipe 4. In the figure (D), 11 indicates the flow of drainage.

  The bending angles θ1 and θ2 of the elbow pipe 5 and the large elbow pipe 6 are set in accordance with the angles at which the floor horizontal piping 3 and the vertical piping 2 and the vertical piping 2 and the underfloor horizontal piping 4 intersect as described above. In order to cope with variations in the inclination angle of the interfloor horizontal piping 3, the vertical piping 2, and the underfloor horizontal piping 4, the connecting portions 5b and 5c can be adjusted, for example, to be elastic or bellows. May be.

  In this piping structure, the inner wall bottom surface portion of the floor horizontal piping 3, the groove 5 d as the drainage guide for the elbow pipe 5, the inner wall inclined surface of the vertical pipe 2, and the groove as the drainage guide for the large elbow pipe 6 Since 6d and the bottom part of the inner wall of the underfloor horizontal pipe 4 are continuous, the drainage flowing through the pipe flows along the inner wall surface of the pipe, and the drainage does not fall freely in the pipe. Therefore, the free-falling drainage does not collide with the inner wall of the lower elbow pipe of the dredging pipe, and the generation of fixed propagation noise due to vibration of the pipe can be reduced or reduced. In addition, generation of air-borne sound due to splashing can be reduced or reduced.

In the piping structure 21 for reducing the drainage sound of the embodiment shown in FIG. 4, 2 is a dredging pipe, 3 is an interfloor horizontal pipe disposed in the floor 8, and 4 is an underfloor horizontal pipe disposed in the floor 10. Piping, 25 is an elbow pipe connecting the floor horizontal pipe 3 and the vertical pipe 2, 26 is an elbow pipe connecting the vertical pipe 2 and the floor horizontal pipe 4, 7 ... is the vertical pipe 2, floor horizontal drawing Fixing hardware for fixing the pipe 3 and the underfloor horizontal pipe 4 to the housing. In the present embodiment, the piping structure of the present invention is continuously provided at two locations on the second floor portion and the first floor portion.

  This piping structure 21 is composed of an interfloor horizontal pipe 3 to 1 disposed between the first floor and the second floor 8 where drainage from water facilities such as toilets, toilets, kitchens and the like provided on the second floor is provided. It is made to flow through the vertical pipe 2 to the underfloor horizontal pipe 4 arranged under the floor. The saddle pipe is arranged in a pipe space provided in the wall surface of the first floor portion 9 and the like.

  The floor horizontal pipe 3 and the floor horizontal pipe 4 are both made of, for example, 100-mm-diameter cylindrical pipe made of polyvinyl chloride, and are directed toward the flow direction so that the water flows without remaining, for example, 1 It is fixed to the housing with the fixed hardware 7 with a gradient of at least%. The fixing to the frame may be a hanging type in which the pipe is suspended from the fixed hardware 7 fixed to the beam material, or a support type in which the pipe is received by the fixed hardware 7 fixed to the ground surface under the floor. .

  The saddle pipe 2 is also composed of, for example, a 100-mm-diameter cylindrical section pipe made of vinyl chloride in the same manner as the inter-floor horizontal pipe 3 and the under-floor horizontal pipe 4, and is vertically fixed with fixed hardware 7 on the side wall of the pipe space. It is tilted and fixed. In this embodiment, as shown in FIG. 4, the floor horizontal piping 7 disposed in the floor 8, the vertical piping 2 disposed in the pipe space of the first floor portion, and the floor 10 are disposed. Underfloor piping 4 is connected to each joint by an elbow pipe, and the crossing line between the floor horizontal piping 3 and the vertical piping 2 and between the vertical piping 2 and the horizontal horizontal piping 4 is substantially S-shaped. ing.

  The elbow pipe 25 connecting the interfloor horizontal pipe 3 and the vertical pipe 2 shown in FIG. 5 is provided at the main body portion 25a having a cylindrical cross section and at both ends of the main body portion 25a. It consists of connection parts 25b and 25c connected to the pipe 2. The bending angle θ3 of the elbow pipe 25 is set in accordance with the angle at which the interlevel floor piping 3 and the saddle pipe 2 intersect.

  A part of the cross section of the main body portion 25a is provided with a groove 25d as a drainage guide, and the groove 25d is provided over the entire length of the elbow pipe 25 in the pipe drainage direction. The position where the groove 25d on the inner wall of the pipe is provided is determined by the positional relationship between the elbow pipe 25 and the floor horizontal pipe 3 and the vertical pipe 2 connected to both ends of the elbow pipe 25. As shown in the side view of the connecting portion of the interfloor horizontal pipe 3, the elbow pipe 25, and the vertical pipe 2 in FIG. 4 (d), the line of intersection between the horizontal horizontal pipe 3 and the vertical pipe 2 intersects at an acute angle. In this case, a groove 25d is provided on the inner wall of the pipe on the curvature center side on the entrance side of the elbow pipe 25, and a groove 25d is provided on the inner wall of the pipe opposite to the center of curvature on the outlet side of the elbow pipe 25. In the length direction, the inner wall surface in the pipe is clockwise or counterclockwise, and a groove portion 25d is provided that is twisted in a spiral for half a circumference from the entrance side to the exit side. The drainage that has passed through the elbow pipe 25 flows downward along the inclined inner wall surface of the inclined pipe 2. In the figure (D), 12 indicates the flow of drainage.

  The elbow pipe 26 connecting the saddle pipe 2 and the underfloor horizontal pipe 4 shown in FIG. 6 is provided at the main body part 26a having a cylindrical cross section and both ends of the main body part 26a. And connecting portions 26b and 26c connected to each other. The bending angle θ4 of the elbow pipe 26 is set in accordance with the angle at which the vertical pipe 2 and the underfloor horizontal pipe 4 intersect.

  A part of the cross section of the main body portion 26a is provided with a groove 26d as a drainage guide, and the groove 26d is provided over the entire length of the elbow pipe 26 in the drainage direction in the pipe. The position where the groove 26d on the inner wall of the pipe is provided is determined by the positional relationship between the elbow pipe 26 and the vertical pipe 2 and the underfloor horizontal pipe 4 connected to both ends of the elbow pipe 26. As shown in the side view of the connecting portion of the vertical pipe 2, the elbow pipe 26, and the underfloor horizontal piping 4 in FIG. 6 (d), when the intersection line of the vertical piping 2 and the underfloor horizontal piping 4 intersects at an acute angle, On the entrance side of the elbow pipe 26, a groove 26d is provided on the inner wall of the pipe on the curvature center side, and on the outlet side of the elbow pipe 26, a groove 26d is provided on the inner wall of the pipe opposite to the center of curvature. In the direction, a groove portion 26d is provided which is twisted in a spiral for half a circumference from the entrance side to the exit side in a clockwise or counterclockwise direction on the inner wall surface of the pipe. The drainage that has passed through the elbow pipe 26 flows downward along the bottom surface of the inner wall of the inclined underfloor horizontal pipe 4. In the figure (D), 12 indicates the flow of drainage.

  The bending angles θ3 and θ4 of the elbow pipes 25 and 26 are set in accordance with the angles at which the interfloor horizontal piping 3 and the vertical piping 2 and the vertical piping 2 and the underfloor horizontal piping 4 intersect as described above. In order to cope with variations in the inclination angle of the horizontal piping 3, the vertical piping 2, and the underfloor horizontal piping 4, the connecting portions 25b and 25c may be adjustable, for example, in an elastic material or a bellows shape. .

  In this piping structure, the bottom surface of the inner wall of the interlevel floor piping 3, the groove 5d as a drainage guide for the elbow pipe 25, the inner wall inclined surface of the vertical pipe 2, and the groove 26d as a drainage guide for the elbow pipe 26 are provided. Since the bottom wall of the underfloor horizontal pipe 4 is continuous, the drainage flowing through the pipe flows along the inner wall surface of the pipe, and the drainage does not fall freely in the pipe. Therefore, the free-falling drainage does not collide with the inner wall of the lower elbow pipe of the dredging pipe, and the generation of fixed propagation noise due to vibration of the pipe can be reduced or reduced. In addition, generation of air-borne sound due to splashing can be reduced or reduced.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the connection form of the pipes is substantially S-shaped, in which the crossing lines of the floor horizontal piping and the vertical piping and the vertical piping and the underfloor horizontal piping intersect each other at an obtuse angle, the horizontal piping and the vertical piping, and Although the case where the crossing line of the vertical pipe and the underfloor horizontal pipe intersects each other at an acute angle is shown, the connection between the horizontal pipe and the vertical pipe may be an obtuse angle. It may be an acute angle, the floor horizontal piping and the vertical piping are acute, the vertical piping and the underfloor horizontal piping are obtuse, the horizontal horizontal piping and the vertical piping are obtuse, and the vertical piping and the horizontal horizontal piping are continuous at an acute angle. It may be the case.

  Moreover, in said embodiment, the drainage path comprised from the 2nd floor horizontal piping, the 1st floor part vertical piping, and the 1st floor lower horizontal piping as a drainage path from the 2nd floor to the 1st floor below Although shown about, there is no limitation in the location in which a horizontal piping and dredging piping are installed, and you may apply to the drainage channel over several floors in the 3rd floor or more building of the applicable building.

  Furthermore, in the said embodiment, although shown about the case where a groove | channel was provided as a drainage guidance guide in an elbow pipe, even if it consists of at least 2 or more protrusions of an elbow pipe inner wall as a drainage guidance guide, as shown in FIG. Alternatively, as shown in FIG. 8, a hydrophilic application portion may be used as the drainage guide. In short, it is only necessary to provide a guide for guiding the drainage flowing on the inner wall of the elbow.

  Moreover, in the said embodiment, although shown about the case where an elbow pipe is a fixed form, as shown in FIG. 9, it is good that an elbow pipe consists of flexible elbow pipes. The elbow pipe is a flexible elbow pipe, so that the direction of drainage of the elbow pipe can be freely bent and expanded, and the flexible elbow pipe can be adjusted regardless of the positional relationship between the horizontal pipe and the vertical pipe. The horizontal piping and vertical piping can be connected with each other, and it is not necessary to prepare elbow pipes of various shapes depending on the positional relationship between the horizontal piping and vertical piping. Furthermore, because the flexible elbow pipe can be twisted in the direction of drainage, the drainage guide inside the flexible elbow pipe is connected to the horizontal and vertical pipes according to the connection relationship between the horizontal pipe and the vertical pipe. And can be adjusted to be continuous.

DESCRIPTION OF SYMBOLS 1,21 ... Piping structure 2 ... Vertical piping 3 ... Inter-floor horizontal piping 4 ... Underfloor horizontal piping 5, 6, 25, 26 ... Elbow pipe 7 ... Fixed hardware 8 ... Inter-floor 9 ... First floor part 10 ... Under the floor 11,12 ... Flow of drainage

Claims (5)

It is a piping structure that reduces the drainage sound of drainage pipes where horizontal pipes and dredging pipes in a building are continuous,
Consists of horizontal piping, vertical piping, and elbow piping that connects horizontal piping and vertical piping.
The vertical pipe is attached with an inclination to the vertical direction,
The elbow pipe has a drainage guide on its inner wall,
A piping structure that reduces drainage noise, characterized by the fact that the bottom surface of the inner wall of the horizontal piping, the drainage guide in the elbow, and the inclined surface of the inner wall of the vertical piping are continuous.   The piping structure for reducing drainage sound according to claim 1, wherein the drainage guide of the elbow pipe is a groove on the inner wall of the elbow pipe formed along the drainage direction.   The piping structure for reducing drainage noise according to claim 1, wherein the drainage guide of the elbow pipe is composed of at least two protrusions on the inner wall of the elbow pipe provided along the drainage direction.   The piping structure for reducing drainage sound according to claim 1, wherein the drainage guide of the elbow pipe is an application part of a hydrophilic paint applied to the inner wall of the elbow pipe along the drainage direction.   The piping structure for reducing drainage sound according to claim 1, wherein the elbow pipe is a flexible elbow pipe.

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