Piping member

Abstract

Provided is a pipe member capable of achieving miniaturization while improving flow rate. The pipe member (10) includes a first straight pipe portion (31) that is a straight pipe provided on a downstream side of a joint having a first receiving port and a second receiving port different from the first receiving port, and a protrusion member (6) provided in the first straight pipe portion (31) to locally reduce a flow passage cross-sectional area of the first straight pipe portion (31). The protrusion member (6) includes a first end and a second end in a length direction along a center axis (C3) of the first straight pipe portion (31), a third end (6c) and a fourth end (6d) in a width direction orthogonal to the length direction, and a top portion (6e) between the first end and the second end and minimizing the flow passage cross-sectional area of the first straight pipe portion (31). If an angle between the third end (6c) and the fourth end (6d) with respect to the center axis (C3) of the first straight pipe portion (31) is θ in a cross section orthogonal to the center axis C3 of the first straight pipe portion (31) and passing through the top portion (6e), then θ is 45° or more and 210° or less.

Description

Technical Field

[0001] This disclosure relates to a piping component. Background Technology

[0002] Patent Document 1 discloses a siphonic rainwater pipe system. The siphonic rainwater pipe system disclosed in Patent Document 1 includes: a gutter; a siphon generating section having a cylindrical portion with a water collection inlet extending through the bottom surface of the gutter and used to generate a siphon effect; and an elbow. The elbow is located on the downstream side of the siphonic rainwater pipe system. The elbow has a curved section and receiving ports located at both ends of the curved section. In the curved section, viewed in cross-section with a plane including the pipe axis, the radius of curvature of the inner wall surface on the inner circumference side is greater than 64 mm and less than 100 mm.

[0003] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2019-120068 Summary of the Invention

[0004] The problem that the invention aims to solve In the technology disclosed in Patent Document 1, although an increase in flow rate can be expected, the bend is relatively large.

[0005] This disclosure provides a piping component that can increase flow rate while achieving miniaturization.

[0006] Methods for solving problems A piping component according to one aspect of this disclosure comprises: a straight pipe disposed downstream of a connector having a first receiving port and a second receiving port facing a different direction from the first receiving port; and one or more protruding components disposed within the straight pipe to locally reduce the flow path cross-sectional area of ​​the straight pipe. The one or more protruding components comprises: a first end and a second end along the length direction of the central axis of the straight pipe; a third end and a fourth end in the width direction orthogonal to the length direction; and a top located between the first end and the second end to minimize the flow path cross-sectional area of ​​the straight pipe. In a cross-section orthogonal to the central axis of the straight pipe and passing through the top, when the angle between the third end and the fourth end relative to the central axis of the straight pipe is defined as θ, θ is 45° or more and 210° or less.

[0007] The effects of the invention This disclosed method can increase throughput while achieving miniaturization. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the piping system in Implementation Method 1.

[0009] Figure 2 This is a cross-sectional view of the first bent pipe of the piping system in Embodiment 1.

[0010] Figure 3 This is a cross-sectional view of the second bend of the piping system in Embodiment 1.

[0011] Figure 4 This is a perspective view of the downstream side of the second bend in the piping system of Embodiment 1.

[0012] Figure 5 This is an exploded perspective view of the downstream side of the second bend of the piping system in Embodiment 1.

[0013] Figure 6 This is a cross-sectional view of the downstream side of the second bend in the piping system of Embodiment 1.

[0014] Figure 7 This is an exploded view of the downstream side of the second bend in the piping system of Embodiment 1.

[0015] Figure 8 yes Figure 7 A sectional view along line AA.

[0016] Figure 9 This is a perspective view of the piping components according to Embodiment 1.

[0017] Figure 10 This is a side view of the piping components according to Embodiment 1.

[0018] Figure 11 This is a top view of the piping components in Embodiment 1.

[0019] Figure 12 This is a bottom view of the piping components according to Embodiment 1.

[0020] Figure 13 yes Figure 11 BB line section view.

[0021] Figure 14 yes Figure 11 CC-line sectional view.

[0022] Figure 15 yes Figure 13 DD-line sectional view.

[0023] Figure 16 This is a diagram of the pressure distribution in a comparative example simulated piping system.

[0024] Figure 17 This is a cross-sectional view of the piping components in Embodiment 2.

[0025] Figure 18 This is a cross-sectional view of the piping components in Embodiment 3.

[0026] Figure 19 This is another cross-sectional view of the piping components in Embodiment 3. Detailed Implementation

[0027] The embodiments will now be described in detail with appropriate reference to the accompanying drawings. However, sometimes unnecessary details are omitted. For example, detailed descriptions of already known matters or repetitive descriptions of substantially the same structures are sometimes omitted. This is to avoid making the following description unnecessarily lengthy and to facilitate understanding by those skilled in the art. Furthermore, the inventors have provided the drawings and the following description in order to enable those skilled in the art to fully understand this disclosure, but they are not intended to limit the subject matter of the claims by them.

[0028] Unless otherwise specified, the positional relationships, such as up, down, left, and right, are based on those shown in the accompanying drawings. The figures described in the following embodiments are schematic, and the ratios of the size and thickness of each component in the figures may not necessarily reflect actual dimensional ratios. Furthermore, the dimensional ratios of each component are not limited to those shown in the accompanying drawings.

[0029] In addition, in the following explanation, when it is necessary to distinguish multiple constituent elements from each other, the names of the constituent elements will be marked with prefixes such as "first" and "second". However, when the constituent elements can be distinguished from each other by the labels, the prefixes such as "first" and "second" will sometimes be omitted for the sake of readability.

[0030] [1. Implementation Method] [1.1 Implementation Method 1] [1.1.1 Structure] Figure 1 This is a schematic diagram of the piping system 1 according to Embodiment 1. The piping system 1 is used to transport fluids with a Reynolds number of 4000 or higher. Fluids with a Reynolds number of 4000 or higher can be described as fluids in which the flow within a cylinder becomes turbulent. Examples of fluids include liquids (drinking water, heat source water, drainage, oil, etc.), gases (air, steam, etc.), and gas-liquid two-phase flows (mixtures of liquid and gas). In this embodiment, the piping system 1 is used as a drainage system. The piping system 1 is a rainwater pipe system that receives rainwater from the roof 11a of the building 11 and directs it to the hopper 21 on the ground 20. The piping system 1 forms the flow path for rainwater. Rainwater collected in the hopper 21 flows out from the hopper 21 through the buried pipe 22 to the rainwater pipe. The building 11 is, for example, a non-residential facility such as a shop, office, factory, building, school, welfare facility or hospital, and a residential facility such as a detached house, a multi-family house, or the individual households of a detached house or multi-family house. Non-residential facilities also include theaters, cinemas, communal halls, amusement parks, complexes, department stores, hotels, inns, kindergartens, libraries, museums, art galleries, underground shopping malls, train stations, and airports.

[0031] The piping system 1 includes gutters 2, vertical pipes 3, horizontal pipes 4, a first bend pipe 51, a second bend pipe 52, protruding components 6, and drainage 7.

[0032] The gutter 2 receives rainwater from the roof 11a of the building 11. The gutter 2 is located beneath the roof 11a of the building 11. For example, the gutter 2 is positioned at the eaves of the roof 11a. Specifically, the gutter 2 is positioned to extend along the eaves of the roof 11a. The gutter 2 is a long, cylindrical shape. The gutter 2 has a bottom wall 2a. Depending on the overall design of the piping system 1, an inlet 2b is formed in the bottom wall 2a. The inlet 2b is, for example, a circular opening. The inlet 2b is also referred to as a catch basin, drain outlet, or downspout in the rainwater pipe system. For example, the gutter 2 can be formed by extrusion molding of a resin material. The gutter 2 may also have a core material to strengthen the overall strength of the gutter 2. The core material may be, for example, metal. As another example, the gutter 2 may also be formed from a metal sheet, such as a steel sheet (also called a coil).

[0033] Drainage 7 is located at the inlet 2b of the gutter 2. Drainage 7 reduces the generation of vortices and air entrainment at the inlet 2b. Drainage 7 can contribute to the generation of a siphon effect. Drainage 7 can be a known structure.

[0034] In piping system 1, the vertical pipe 3 is not directly connected to the inlet 2b, but is connected to the inlet 2b via the horizontal pipe 4, the first bend pipe 51 and the second bend pipe 52.

[0035] Riser 3 defines the vertical flow path. Riser 3 is fixed to the wall 11b of building 11. Riser 3 is also referred to as a downpipe in the rainwater pipe system. Riser 3 is installed to discharge rainwater from inlet 2b. Riser 3 allows rainwater from inlet 2b to flow vertically. Riser 3 is a straight pipe. The cross-section of riser 3 orthogonal to the central axis C3 is circular. Riser 3 is configured such that the direction of the central axis C3 of riser 3 is consistent with the vertical direction. Riser 3 has an upstream end 3a and a downstream end 3b. The upstream end 3a is the end of riser 3 that connects to inlet 2b. Figure 1 The upper end of the tube 3). The downstream end 3b is the end of the vertical tube 3 that is inserted into the hopper section 21. Figure 1 (The lower end of the middle). In Figure 1 The system is equipped with a pipe cover 30 to prevent rainwater from flowing into the hopper 21 through the gap between the vertical pipe 3 and the hopper 21.

[0036] The horizontal pipe 4 defines the flow path in a direction intersecting the vertical direction. The horizontal pipe 4 is also referred to as the inlet pipe in the stormwater pipe system. The horizontal pipe 4 is the section used to allow rainwater from building 11 to flow from inlet 2b to riser 3. The horizontal pipe 4 is located between the rainwater inlet 2b from building 11 and riser 3. The horizontal pipe 4 is a straight pipe. The cross-section of the horizontal pipe 4 orthogonal to the central axis C4 is circular. The horizontal pipe 4 is fixed in a manner that the direction of the central axis C4 is inclined relative to the vertical direction. The horizontal pipe 4 has an upstream end 4a and a downstream end 4b. The upstream end 4a is the end of the horizontal pipe 4 that connects to inlet 2b. Figure 1 The left end of the middle section). The downstream end 4b is the end of the horizontal tube 4 that connects to the vertical tube 3. Figure 1 (The right end of the middle).

[0037] As an example, the material of the vertical pipe 3 and the horizontal pipe 4 is rigid polyvinyl chloride. The dimensions, such as the shape and thickness, of the vertical pipe 3 and the horizontal pipe 4 can be set according to the specifications of rigid polyvinyl chloride pipe (general) in JIS K 6741 "Rigid Polyvinyl Chloride Pipe".

[0038] Table 1 is an example of the nominal diameter of rigid PVC pipe VP in the specifications of JIS K 6741 "Rigid PVC Pipe" (general). In Table 1, the units for outer diameter (reference dimension), thickness (minimum dimension), and approximate inner diameter are mm.

[0039] [Table 1] Table 2 is an example of the nominal diameter of rigid PVC pipe (VU) in the specifications of JIS K 6741 "Rigid PVC Pipe" (general). In Table 2, the units for outer diameter (reference dimension), thickness (minimum dimension), and approximate inner diameter are mm.

[0040] [Table 2] The first bend pipe 51 and the second bend pipe 52 change the orientation of the flow path. The first bend pipe 51 and the second bend pipe 52 are, for example, connecting joints that connect flow paths with different orientations, such as vertical pipes and horizontal pipes.

[0041] Figure 2 This is a cross-sectional view of the first bent tube 51. The first bent tube 51 has a curved section (bent portion) 510 and receiving ports 511 and 512 facing different directions. The curved section 510 and the receiving ports 511 and 512 are formed continuously and integrally. The material of the first bent tube 51, that is, the material of the curved section 510, is rigid polyvinyl chloride.

[0042] The curved tube section 510 has openings 511a and 512a at both ends. The curved tube section 510 is cylindrical, but the tube axis (center line) A51 of the curved tube section 510 is not straight but curved. That is, the curved tube section 510 has a curved tube axis A51. The tube axis A51 of the curved tube section 510 defines the tube axis of the first curved tube 51.

[0043] Figure 2 It is a cross-sectional view of the first curved tube 51 in the plane including the tube axis A51 of the curved tube section 510. Figure 2 The inner diameters of the curved sections 510 of the first curved tube 51 are approximately the same. Figure 2 In the diagram, R51 represents the radius of curvature of the tube shaft A51. The radius of curvature R51 of the tube shaft A51 defines the radius of curvature of the first bent tube 51. O51 represents the center of the circle defining the radius of curvature R51.

[0044] exist Figure 2 In this context, θ51 represents the angle between the centerlines C511 and C512 of the openings 511a and 512a at both ends of the first bent pipe 51 in a cross-section on a plane including the pipe axis A51 of the first bent pipe 51. θ51 is, for example, 91.17° as specified in JIS K 6739 "Rigid PVC pipe fittings for drainage".

[0045] exist Figure 2 In this context, δ51 refers to the diameter [mm] of the openings 511a and 512a of the curved pipe section 510. δ51 can be determined by considering factors such as the target drainage capacity of the piping system 1. δ51 can be set according to the specifications of JIS K 6739 "Rigid PVC pipe fittings for drainage". For example, δ51 can be set to a reference size that meets the nominal diameter specified in JIS K 6739. According to JIS K 6739 "Rigid PVC pipe fittings for drainage", the reference sizes are 77.2mm, 98.8mm, and 125mm for nominal diameters of 75mm, 100mm, and 125mm, respectively.

[0046] like Figure 2 As shown, in a cross-section of the plane including the tube axis A51 of the first curved tube 51, the curved tube portion 510 has an inner surface 510a on the inner circumferential side and an inner surface 510b on the outer circumferential side. The inner surfaces 510a and 510b are curved in shape. Here, in the cross-section of the plane including the tube axis A51 of the first curved tube 51, the radius of curvature of the inner surface 510a is greater than 54 mm and less than 125 mm.

[0047] Receiving ports 511 and 512 are respectively provided at both ends of the curved pipe section 510. Receiving ports 511 and 512 are provided for connecting piping components to the first curved pipe 51. In this embodiment, receiving port 511 is connected to the upstream end 4a of the horizontal pipe 4, and receiving port 512 is connected to the drain 7. Receiving ports 511 and 512 are cylindrical, respectively surrounding the openings 511a and 512a of the curved pipe section 510. Figure 2 In the middle, the receiving ports 511 and 512 have the same shape.

[0048] Figure 2 In the diagram, the dimensions of the receiving port 511 of the first curved pipe 51 are shown as D51, d51, and l51. l51 is the length of the receiving port 511 (or the length of the receiving port 512) in a cross-section of a plane including the pipe axis A51 of the curved pipe section 510. D51 is the outer diameter of the receiving port 511 (or receiving port 512), in mm. d51 is the inner diameter of the receiving port 511 (or receiving port 512), in mm. The dimensions D51, d51, and l51 of the first curved pipe 51 can be set, for example, according to the specifications of JIS K 6739 "Rigid PVC pipe fittings for drainage".

[0049] Figure 3 This is a cross-sectional view of the second bent tube 52. The second bent tube 52 has a bent section (bent section) 520 and receiving ports 521 and 522 facing different directions. The bent section 520 and the receiving ports 521 and 522 are formed continuously and integrally. The material of the second bent tube 52, that is, the material of the bent section 520, is rigid polyvinyl chloride.

[0050] The curved tube section 520 has openings 521a and 522a at both ends. The curved tube section 520 is cylindrical, but the tube axis (center line) A52 of the curved tube section 520 is not straight but curved. That is, the curved tube section 520 has a curved tube axis A52. The tube axis A52 of the curved tube section 520 defines the tube axis of the second curved tube 52.

[0051] Figure 3 It is a cross-sectional view of the second curved tube 52 in the plane including the tube axis A52 of the curved tube section 520. Figure 3 The inner diameter of the curved section 520 of the second curved tube 52 is approximately the same. Figure 3 In this context, R52 represents the radius of curvature of the tube shaft A52. The radius of curvature R52 of the tube shaft A52 specifies the radius of curvature of the second curved tube 52. O52 represents the center of the circle that specifies the radius of curvature R52.

[0052] exist Figure 3In this context, θ52 represents the angle between the centerlines C521 and C522 of the openings 521a and 522a at both ends of the second bend 52 in a cross-section on a plane including the pipe axis A52 of the second bend 52. θ52 is, for example, 91.17° as specified in JIS K 6739 "Rigid PVC pipe fittings for drainage".

[0053] exist Figure 3 In this context, δ52 refers to the diameter [mm] of the openings 521a and 522a of the curved pipe section 520. δ52 can be determined considering factors such as the target drainage capacity of the piping system 1. δ52 can be set according to the specifications of JIS K 6739 "Rigid PVC pipe fittings for drainage". For example, δ52 can be set to a reference size that meets the nominal diameter specified in JIS K 6739. According to JIS K 6739 "Rigid PVC pipe fittings for drainage", the reference sizes are 77.2mm, 98.8mm, and 125mm for nominal diameters of 75mm, 100mm, and 125mm, respectively.

[0054] like Figure 3 As shown, in a cross-section of the plane including the tube axis A52 of the second curved tube 52, the curved tube portion 520 has an inner surface 520a on the inner circumferential side and an inner surface 520b on the outer circumferential side. The inner surface 520a has a corner portion 520c. The corner portion 520c is located in the middle portion of the inner surface 520a between the opening 521a and the opening 522a. The corner portion 520c is R-shaped. In the cross-section of the plane including the tube axis A52 of the second curved tube 52, the radius of curvature of the corner portion 520c is 0 mm or more and 54 mm or less, preferably 0 mm or more and 2 mm or less. The inner surface 520b does not have a corner portion like the corner portion 520c. The inner surface 520b is generally curved.

[0055] Receiving ports 521 and 522 are respectively provided at both ends of the curved pipe section 520. Receiving ports 521 and 522 are provided for connecting piping components to the second curved pipe 52. In this embodiment, receiving port 521 is connected to the upstream end 3a of the vertical pipe 3, and receiving port 522 is connected to the downstream end 4b of the horizontal pipe 4. Receiving ports 521 and 522 are cylindrical, respectively surrounding the openings 521a and 522a of the curved pipe section 520. Figure 3 In the middle, the receiving ports 521 and 522 have the same shape.

[0056] Figure 3In the diagram, the dimensions of the receiving port 521 of the second curved pipe 52 are shown as D52, d52, and l52. l52 is the length of the receiving port 521 (or the length of the receiving port 522) in a cross-section of a plane including the pipe axis A52 of the curved pipe section 520. D52 is the outer diameter of the receiving port 521 (or receiving port 522), in mm. d52 is the inner diameter of the receiving port 521 (or receiving port 522), in mm. The dimensions D52, d52, and l52 of the second curved pipe 52 can be set, for example, according to the specifications of JIS K 6739 "Rigid PVC pipe fittings for drainage".

[0057] In this embodiment, the first bent tube 51 and the second bent tube 52 correspond to the same nominal diameter. The angle θ51 between the centerlines C511, C512 of the openings 511a, 512a at both ends of the first bent tube 51 in a cross-section of the plane including the tube axis A51 of the first bent tube 51 is equal to the angle θ52 between the centerlines C521, C522 of the openings 521a, 522a at both ends of the second bent tube 52 in a cross-section of the plane including the tube axis A52 of the second bent tube 52. On the other hand, the radius of curvature R52 of the second bent tube 52 is smaller than the radius of curvature R51 of the first bent tube 51. Thus, the first bent tube 51 and the second bent tube 52 have different shapes.

[0058] In this embodiment, the first bend 51 and the second bend 52 are 90° elbows. In this case, the distance between the horizontal inlet 2b and the vertical pipe 3 can be increased while shortening the length of the horizontal pipe 4. In particular, the first bend 51 is a 90° large bend elbow (so-called LL) as specified in JIS K 6739. The second bend 52 is a 90° elbow (so-called DL) as specified in JIS K 6739. The 90° elbow specified in JIS K 6739 is smaller and more design-friendly compared to the 90° large bend elbow specified in JIS K 6739. Therefore, the design of the piping system 1 can be improved. The piping system 1 can be made less conspicuous relative to the building 11. The first bend 51 and the second bend 52 can use pipes of common specifications, making it easy to install the piping system 1.

[0059] The piping system 1 includes a first bend 51 and a second bend 52. In each of the first bend 51 and the second bend 52, the flow path orientation changes. When the flow path orientation changes, pressure loss due to flow separation may become a cause of reduced flow rate. In this embodiment, the radius of curvature R52 of the second bend 52 is smaller than the radius of curvature R51 of the first bend 51. Therefore, there is a tendency for the pressure loss caused by the second bend 52 to be greater than the pressure loss caused by the first bend 51. To reduce the reduction in flow rate caused by the pressure loss caused by the second bend 52, a protruding member 6 is provided.

[0060] like Figure 1 As shown, the protruding component 6 is located on the downstream side of the second curved pipe 52. More specifically, the protruding component 6 is located on the inner circumference of the second curved pipe 52 within the straight pipe portion, i.e., the vertical pipe 3, on the downstream side of the second curved pipe 52, and is used to locally reduce the flow path cross-sectional area of ​​the vertical pipe 3.

[0061] Figure 4 This is a perspective view of the downstream side of the second bend 52 of the piping system 1. Figure 5 This is an exploded perspective view of the downstream side of the second bend of the piping system 1. Figure 6 This is a cross-sectional view of the downstream side of the second bend 52 of the piping system 1. Figure 7 This is an exploded view of the downstream portion of the second bend of the piping system 1. Figure 8 yes Figure 7 A sectional view along line AA.

[0062] In this embodiment, the vertical pipe 3 is composed of multiple pipes. The vertical pipe 3 includes a first straight pipe section 31 and a second straight pipe section 32.

[0063] The first straight pipe section 31 is directly connected to the downstream side of the second curved pipe 52. Therefore, the first straight pipe section 31 is the upstream side of the vertical pipe 3.

[0064] The first straight section 31 has a main body 311 and a receiving port 312.

[0065] The main body 311 is a straight tube. For example... Figure 7 As shown, the main body 311 is at the first end ( Figure 7 The upper end) and the second end ( Figure 7 The lower ends of the first straight section 31 have openings 311a and 311b respectively. In the vertical pipe 3, the first end of the first straight section 31 is defined as the end 3a on the upstream side of the vertical pipe 3.

[0066] A receiving port 312 is provided at the second end of the main body 311. The receiving port 312 is provided for connecting the second straight tube 32 to the first straight tube 31. The receiving port 312 is cylindrical and surrounds the opening 311b of the main body 311.

[0067] The second straight pipe section 32 is connected to the downstream side of the first straight pipe section 31. Therefore, the second straight pipe section 32 is the downstream part of the vertical pipe 3. The second straight pipe section 32 is straight. The first end of the second straight pipe section 32 ( Figure 1 The upper end of the second straight tube 32 is connected to the receiving port 312 of the first straight tube 31. Figure 1 The lower end of the vertical pipe 3 is defined as the downstream end 3b of the vertical pipe 3. The second end of the second straight pipe section 32 becomes the downstream opening point 3c of the vertical pipe 3 (refer to...). Figure 1 ).

[0068] In the vertical pipe 3, the inner diameters of the main body 311 of the first straight pipe section 31 and the inner diameters of the second straight pipe section 32 are equal. The inner diameters of the main body 311 of the first straight pipe section 31 and the inner diameters of the second straight pipe section 32 define the flow path cross-sectional area of ​​the vertical pipe 3.

[0069] In the vertical pipe 3, the first straight pipe section 31 is shorter than the second straight pipe section 32. The length of the first straight pipe section 31 can be 1.0m or less. A protruding member 6 is provided on the first straight pipe section 31. Therefore, it is easy to place the protruding member 6 near the second curved pipe 52. As a result, it is possible to increase the flow rate while achieving miniaturization. Furthermore, the handling of the first straight pipe section 31 with the protruding member 6 becomes easier.

[0070] In this embodiment, the first straight section 31 of the riser 3 and the protruding member 6 constitute the piping component 10. In this embodiment, the piping component 10 is not composed entirely of the riser 3, but rather of a portion of the riser 3 (the first straight section 31), thus improving the portability of the piping component 10.

[0071] Figure 9 This is a three-dimensional view of piping component 10. Figure 10 This is a side view of piping component 10. Figure 11 This is a top view of piping component 10. Figure 12 This is a bottom view of piping component 10. Figure 13 yes Figure 11 BB line section view. Figure 14 yes Figure 11 CC-line sectional view. Figure 15 yes Figure 13 DD-line sectional view.

[0072] like Figure 6 , Figure 8 as well as Figure 13As shown, the protruding component 6 has a first end 6a and a second end 6b. The first end 6a and the second end 6b are the two ends of the protruding component 6 along its length. The length direction of the protruding component 6 corresponds to the flow direction of the fluid flowing in the vertical pipe 3. The flow direction of the fluid flowing in the vertical pipe 3 is consistent with the direction of the central axis C3 of the vertical pipe 3. The first end 6a is located closer to the second curved pipe 52 than the second end 6b. In this embodiment, the first end 6a is the upstream end, and the second end 6b is the downstream end.

[0073] like Figure 11 , Figure 12 as well as Figure 15 As shown, the protruding member 6 has a third end 6c and a fourth end 6d. The third end 6c and the fourth end 6d are the two ends in the width direction of the protruding member 6. The width direction of the protruding member 6 is orthogonal to the length direction of the protruding member 6. In this embodiment, when viewed from the direction of the central axis C3 of the vertical pipe 3, the protruding member 6 has a shape that is concave in the center than on both sides. As a result, the flow rate can be increased.

[0074] like Figure 6 , Figure 8 and Figure 13 As shown, in the plane passing through the central axes C521 and C522 of the openings 521a and 522a of the second curved pipe 52, the surface of the protruding member 6 has a curved shape protruding from the first wall surface 31b towards the second wall surface 31c. The height of the protruding member 6 varies along the direction of the central axis C3 of the vertical pipe 3. In this embodiment, the protruding member 6 has a top 6e between the first end 6a and the second end 6b. The top 6e is the tallest part of the protruding member 6. The height of the protruding member 6 increases monotonically from the first end 6a toward the top 6e. The height of the protruding member 6 decreases monotonically from the top 6e toward the second end 6b. The protruding member 6 minimizes the flow path cross-sectional area of ​​the vertical pipe 3 at the top 6e.

[0075] From another perspective, the protruding member 6 only needs to have a shape that protrudes from the inner circumference of the second curved pipe 52 toward the outer circumference in a manner that generates a Coanda effect within the straight pipe portion (first straight pipe portion 31) downstream of the second curved pipe 52. That is, the protruding member 6 only needs to have a shape that generates a Coanda effect within the straight pipe portion (first straight pipe portion 31) downstream of the second curved pipe 52. This allows for increased flow rate while achieving miniaturization.

[0076] A protruding member 6 is provided in the first straight section 31 of the vertical pipe 3. More specifically, the protruding member 6 is provided in the first straight pipe section 31 such that it protrudes from the first wall surface 31b on the inner circumferential side of the second curved pipe 52 in the first straight pipe section 31 toward the second wall surface 31c on the outer circumferential side of the second curved pipe 52 in the first straight pipe section 31. Here, the first wall surface 31b is the portion on the inner circumferential side of the second curved pipe 52 in the inner circumferential surface 31a of the first straight pipe section 31 (for example, half of the inner circumferential side). The second wall surface 31c is the portion on the outer circumferential side of the second curved pipe 52 in the inner circumferential surface 31a of the first straight pipe section 31 (for example, half of the outer circumferential side). The inner circumferential surface 31a of the first straight pipe section 31 is composed of the first wall surface 31b and the second wall surface 31c.

[0077] Thus, by providing the protruding member 6 on the first straight section 31 of the riser 3, a reduced portion P, where the flow path cross-sectional area of ​​the piping system 1 is smaller than that of the riser 3, exists on the downstream side of the second curved pipe 52 between the corner 520c on the inner circumference side of the second curved pipe 52 and the opening 311b of the first straight section 31. The reduced portion P is the location in the riser 3 where the protruding member 6 is present.

[0078] like Figure 9 and Figure 10 As shown, the first end 6a of the protruding member 6 protrudes outward from the opening 311a of the first straight tube portion 31. Therefore, when the second curved tube 52 is connected to the first straight tube portion 31, as... Figure 6 As shown, the first end 6a of the protruding member 6 protrudes from the opening 521a into the curved section 520 of the second curved tube 52, covering a portion of the inner surface 520a of the curved section 520. The first end 6a of the protruding member 6 coincides with the corner 520c of the inner surface 520a of the curved section 520. Thus, since the protruding member 6 spans the curved section 520 and the first straight section 31 of the second curved tube 52, the influence of the step (segment difference) that may occur at the junction between the curved section 520 and the first straight section 31 of the second curved tube 52 can be reduced.

[0079] like Figures 9-11 As shown, the first straight tube portion 31 also has a mark 313. The mark 313 indicates information related to the assembly of the first straight tube portion 31. In this embodiment, the mark 313 indicates the orientation in which the first straight tube portion 31 is connected to the second curved tube 52. Figure 9 Mark 313 is an arrow indicating the direction in which the first straight tube 31 is connected to the second curved tube 52. Figures 9-11In this embodiment, four markings 313 are arranged at equal intervals in the circumferential direction on the outer peripheral surface of the upstream end of the first straight tube portion 31. The markings 313 can be characters, graphics, symbols, three-dimensional shapes, colors, or combinations thereof that can be recognized by human perception. In this embodiment, when the first straight tube portion 31 is connected to the second curved tube 52, the markings 313 are located on the outer peripheral surface of the first straight tube portion 31 at a position not obstructed by the receiving port 521 of the second curved tube 52. However, when the first straight tube portion 31 is connected to the second curved tube 52, the markings 313 may also be located on the outer peripheral surface of the first straight tube portion 31 at a position obstructed by the receiving port 521 of the second curved tube 52.

[0080] As described above, by providing the protruding member 6 on the first straight pipe portion 31, the reduced portion P, which has a flow path cross-sectional area smaller than the opening 311b, exists between the corner portion 520c of the second curved pipe 52 and the opening 311b.

[0081] Next, the function of the protruding part 6 will be explained.

[0082] Figure 16 This is a diagram simulating the pressure distribution when water flows in a comparative example piping system 100. The comparative example piping system 100 differs from piping system 1 in that it does not have the protruding component 6. Figure 16 In the diagram, darker colors indicate lower pressure. Specifically, in... Figure 16 The location represented by R in the diagram exhibits significant pressure loss, and the presence of such a location with substantial pressure loss may be a major cause of reduced flow rate. It is believed that... Figure 16 The pressure loss at the location indicated by R is caused by flow separation. This flow separation is due to water leaving the first wall surface 31b of the riser 3 at a location downstream of the corner 520c of the second bend 52. That is, as Figure 16 As indicated by arrow F, water flowing in from the upstream side initially flows along the pipe wall 200, but after the corner 520c of the second bend 52, it sometimes exits from the first wall 31b of the riser 3. Such flow separation is particularly pronounced when the water flow velocity is high. The faster the flow velocity, the wider the range of pressure loss is likely to become.

[0083] In piping system 1, due to the significant change in the flow path orientation within the second bend 52, pressure loss caused by flow separation may be a reason for reduced flow rate. The protruding component 6 is located at the end of the second bend 52 side (upstream end 3a) inside the riser 3. Specifically, the protruding component 6 is located on the inner circumferential side of the second bend 52 of the riser 3. Figure 1(Left side of the middle). In the protruding part 6, the top 6e is closer to the first end 6a than the second end 6b, and the first end 6a is closer to the second bend 52 than the second end 6b. In the protruding part 6, fluid flow from the first end 6a toward the second end 6b is generated. With the presence of the protruding part 6, (1) compared with the case without the protruding part 6, it is expected that the fluid will flow more easily along the pipe wall, and (2) it is expected that the part itself that may cause pressure loss will be reduced. Therefore, the protruding part 6 can reduce the generation of pressure loss caused by flow separation from the second bend 52 downstream, thereby increasing the flow rate. The piping system 1 can achieve miniaturization by having only the protruding part 6 so that the radius of curvature of the second bend 52 is smaller than that of the first bend 51. Therefore, the protruding part 6 can increase the flow rate while achieving miniaturization. The protruding part 6 is located inside the riser 3, and when viewed as a whole as a piping system 1, the protruding part 6 becomes inconspicuous. Therefore, it is expected that the aesthetics of the piping system 1 as a whole will be improved.

[0084] Next, an example of the dimensions of the piping component 10 will be explained.

[0085] Reference Figure 15 . Figure 15 yes Figure 13 The DD-line sectional view. That is, Figure 15 This indicates a section that is orthogonal to the central axis C3 of the vertical tube 3 (first straight tube section 31) and passes through the top 6e. Figure 15 In this diagram, for ease of understanding, the central axis C3 is hypothetically represented by a black circle. The angle between the third end 6c and the fourth end 6d in this cross-section, relative to the central axis C3 of the first straight tube portion 31, is denoted as θ. θ can be 45° or more and 210° or less. Preferably, θ can be 60° or more. Preferably, θ can be 180° or less. When θ is less than 45°, the protruding member 6 is relatively small relative to the flow path, and its function may not be fully realized. When θ exceeds 210°, the protruding member 6 is relatively large relative to the flow path, and the losses caused by pressure loss may outweigh the pressure loss reduction effect brought by the protruding member 6. Therefore, by making θ 45° or more and 210° or less, it is possible to increase the flow rate while achieving miniaturization.

[0086] like Figure 11 , Figure 12 as well as Figure 15 As shown, when viewed from the direction of the central axis C3 of the first straight pipe section 31, the protruding member 6 has a symmetrical shape. This allows the protruding member 6 to function more appropriately when the distribution of fluid in the first straight pipe section 31 is symmetrical when viewed from the direction of the central axis C3 of the first straight pipe section 31, according to the structure of the piping system 1.

[0087] like Figure 15 As shown, in a cross-section orthogonal to the central axis C3 of the first straight pipe section 31 and passing through the top 6e, the surface of the protruding member 6 between the third end 6c and the fourth end 6d is curved. In this embodiment, the surface of the protruding member 6 is curved, with the center being more concave than the sides. Here, the curved shape is preferably a smooth curve. "Smooth curve" here refers to a shape without angles that impede fluid flow. The surface of the protruding member 6 can be a single curved surface or multiple curved surfaces connected by fillets. Therefore, a "smooth curve" can be formed by a single curve or multiple curves connected by fillets. This allows for increased flow rate while achieving miniaturization.

[0088] Reference Figure 6 and Figure 8 In the riser 3, the inner diameter of the flow path is the diameter of the riser 3, and the direction of the flow path is the direction of the central axis C3 of the riser 3. Let the diameter of the riser 3 be d, and the length of the protruding component 6 in the direction of the central axis C3 of the riser 3 be L. In the piping assembly 10, this can be 0.5d ≤ L ≤ 5.0d. This further reduces the pressure loss caused by the second bend 52. Therefore, it is possible to increase the flow rate while achieving miniaturization.

[0089] exist Figure 6 and Figure 8 In the compacted section P, the top 6e of the protruding component 6 has the smallest flow path cross-sectional area. The distance between the corner 520c of the second bend 52 and the top 6e in the direction of the central axis C3 of the vertical pipe 3 is defined as D1. In the piping assembly 10, this distance can be 0 ≤ D1 ≤ 0.5d. This further reduces the pressure loss caused by the second bend 52. Therefore, it is possible to increase flow rate while achieving miniaturization.

[0090] exist Figure 8 In the direction of the central axis C3 of the riser 3, the distance between the top 6e and the downstream end (second end 6b) is set as D3. D3 is D3 = L - D1. In the piping assembly 10, D3 can be greater than D1. This further reduces the pressure loss caused by the second bend 52. Therefore, it is possible to increase flow rate while achieving miniaturization.

[0091] Reference Figure 11 and Figure 13In the plane of the central axes C521, C522 of the receiving ports 521, 522 of the second bend pipe 52, the distance between the top 6e and the second wall surface 31c is set as D2. In the piping assembly 10, this distance can be 0.60d ≤ D2 ≤ 0.95d. This further reduces the pressure loss caused by the second bend pipe 52. Therefore, flow rate can be increased while achieving miniaturization. Here, the height of the top 6e of the protruding member 6 is set as H. H is H = d - D2. In the piping assembly 10, this height can be 0.05d ≤ H ≤ 0.40d. This further reduces the pressure loss caused by the second bend pipe 52. Therefore, flow rate can be increased while achieving miniaturization.

[0092] Reference Figure 15 Let A be the maximum cross-sectional area of ​​the flow path of the riser 3, and let A1 be the minimum cross-sectional area of ​​the flow path of the riser 3. The minimum cross-sectional area of ​​the flow path of the riser 3 is the cross-sectional area of ​​the flow path at the top 6e of the protruding member 6. In the piping assembly 10, (A-A1) / A ≤ 0.5. Preferably, (A-A1) / A ≤ 0.4. This can further reduce the pressure loss caused by the second bend 52. Therefore, it is possible to increase the flow rate while achieving miniaturization. Here, let A2 be the maximum cross-sectional area of ​​the protruding member 6. A2 is also the cross-sectional area of ​​the protruding member 6 at the top 6e of the protruding member 6. A2 is A2 = A-A1. That is, in the piping system 1, A2 / A ≤ 0.5 is also possible, and preferably A1 / A ≤ 0.4.

[0093] [1.1.2 Effects, etc.] The piping component 10 described above includes: a first straight pipe portion 31 disposed downstream of a connector (second curved pipe 52), the connector having a first receiving port (receiving port 521) and a second receiving port (receiving port 522) facing a different direction from the receiving port 521; and a protruding component 6 disposed within the first straight pipe portion 31, thereby locally reducing the flow path cross-sectional area of ​​the first straight pipe portion 31. The protruding component 6 includes: a first end 6a and a second end 6b along the length direction of the central axis C3 of the first straight pipe portion 31; a third end 6c and a fourth end 6d in the width direction orthogonal to the length direction; and a top 6e located between the first end 6a and the second end 6b, which minimizes the flow path cross-sectional area of ​​the first straight pipe portion 31. If, in a cross-section orthogonal to the central axis C3 of the first straight pipe portion 31 and passing through the top 6e, the angle between the third end 6c and the fourth end 6d relative to the central axis C3 of the first straight pipe portion 31 is defined as θ, then θ is 45° or more and 210° or less. This structure can increase throughput while achieving miniaturization.

[0094] In piping component 10, θ is 60° or more, and θ is 180° or less. This structure enables increased flow rate while achieving miniaturization.

[0095] In the piping assembly 10, in a cross-section orthogonal to the central axis C3 of the first straight pipe section 31 and passing through the top 6e, the surface of the protruding member 6 between the third end 6c and the fourth end 6d is curved. This structure enables miniaturization while increasing flow rate.

[0096] In the piping assembly 10, the protruding part 6 is integrally formed with the straight pipe (first straight pipe section 31). This structure can reduce the likelihood of the protruding part 6 falling off or being forgotten to be installed.

[0097] In the piping component 10, if the maximum value of the flow path cross-sectional area is set as A, and the minimum value of the flow path cross-sectional area is set as A1, then (A-A1) / A≤0.5. This structure can increase the flow rate while achieving miniaturization.

[0098] In the piping assembly 10, if the inner diameter of the straight pipe (first straight pipe section 31) is set as d, and the length of one or more protruding parts 6 is set as L, then 0.5d≤L≤5.0d. This structure can increase flow rate while achieving miniaturization.

[0099] In the piping assembly 10, if the inner diameter of the straight pipe (first straight pipe section 31) is set as d, and the height at the top 6e of one or more protruding parts 6 is set as H, then 0.05d≤H≤0.40d. This structure can increase flow rate while achieving miniaturization.

[0100] [1.2 Implementation Method 2] [1.2.1 Structure] Figure 17 This is a cross-sectional view of the piping component 10A according to Embodiment 2. The piping component 10A includes a first straight pipe portion 31 and a protruding portion 6A.

[0101] Figure 17 This indicates a cross-section that is orthogonal to the central axis C3 of the vertical tube 3 (first straight tube section 31) and passes through the top 6e of the protruding member 6A. Figure 17 In the diagram, for ease of understanding, the central axis C3 is represented by a black circle.

[0102] from Figure 17As can be seen, when viewed from the direction of the central axis C3 of the first straight tube 31, the protruding member 6A has an asymmetrical shape. In the protruding member 6A, θ is the sum of θa and θb. Here, in a cross-section orthogonal to the central axis C3 of the vertical tube 3 (first straight tube 31) and passing through the top 6e of the protruding member 6A, θa is the angle between the third end 6c and the plane P1 relative to the central axis C3 of the first straight tube 31. In a cross-section orthogonal to the central axis C3 of the vertical tube 3 (first straight tube 31) and passing through the top 6e of the protruding member 6A, θb is the angle between the fourth end 6d and the plane P1 relative to the central axis C3 of the first straight tube 31. The plane P1 represents the plane passing through the central axes C521, C522 of the openings 521a, 522a of the second curved tube 52 (which are equivalent to the central axes of the receiving ports 521, 522).

[0103] In the protruding member 6A, θa and θb are respectively 22.5° and 105° or less, preferably 30° and 90° or less. θa and θb are different from each other. This allows the protruding member 6A to function more appropriately when the distribution of fluid in the first straight pipe section 31 is asymmetrical when viewed from the direction of the central axis C3 of the first straight pipe section 31.

[0104] [1.2.2 Effects, etc.] In the piping component 10A described above, the protruding component 6 has an asymmetrical shape when viewed from the direction of the central axis C3 of the straight pipe (vertical pipe 3, first straight pipe section 31). This structure can increase flow rate while achieving miniaturization.

[0105] [1.3 Implementation Method 3] [1.3.1 Structure] Figure 18 This is a cross-sectional view of the piping component 10B according to Embodiment 3. Figure 18 The cross section in the plane corresponding to the central axes C521, C522 of the openings 521a, 522a of the second curved tube 52 (which are equivalent to the central axes of the receiving ports 521, 522).

[0106] like Figure 18 As shown, the piping component 10B includes a first straight pipe portion 31, a first protruding component 6-1, and a second protruding component 6-2.

[0107] The structure of the first protruding component 6-1 and the second protruding component 6-2 is the same as that of the protruding component 6 described in Embodiment 1.

[0108] The first protruding component 6-1 and the second protruding component 6-2 are positioned opposite each other across the central axis C3 of the straight pipe (vertical pipe 3, first straight pipe section 31). Figure 18As shown, the first protruding component 6-1 is located on the first wall surface 31b side, and the second protruding component 6-2 is located on the second wall surface 31c side.

[0109] Figure 19 This is another cross-sectional view of the piping component 10B in Embodiment 3. Figure 19 This represents a cross-section orthogonal to the central axis C3 of the vertical tube 3 (first straight tube section 31) and passing through the top 6e of the first protruding member 6-1 and the second protruding member 6-2. Figure 19 In the diagram, for ease of understanding, the central axis C3 is represented by a black circle.

[0110] Regarding the first protruding component 6-1, Figure 19 The angle θ between the third end 6c and the fourth end 6d in the cross-section relative to the central axis C3 of the first straight pipe section 31 is set as θ1. θ1 can be 45° or more and 210° or less. Preferably, θ1 can be 60° or more and 180° or less. As a result, flow rate can be increased while achieving miniaturization.

[0111] Regarding the second protruding component 6-2, Figure 19 The angle θ between the third end 6c and the fourth end 6d in the cross-section relative to the central axis C3 of the first straight pipe section 31 is set as θ2. θ2 can be 45° or more and 210° or less. Preferably, θ2 can be 60° or more and 180° or less. As a result, flow rate can be increased while achieving miniaturization.

[0112] Furthermore, θ1+θ2 can be less than 360°. When θ1+θ2 exceeds 360°, the first protruding component 6-1 and the second protruding component 6-2 are relatively large relative to the flow path, and the losses caused by pressure loss may outweigh the pressure loss reduction effect brought by the first protruding component 6-1 and the second protruding component 6-2. Therefore, by making θ1+θ2 less than 360°, it is possible to increase the flow rate while achieving miniaturization.

[0113] In the piping assembly 10B described above, the first protruding member 6-1 and the second protruding member 6-2 are arranged opposite each other across the central axis C3 of the straight pipe (vertical pipe 3, first straight pipe section 31). Depending on the distribution of fluid flow within the straight pipe, it is sometimes preferable to have protruding members 6 on both sides of the straight pipe. The piping assembly 10B can handle such situations, increasing flow rate while achieving miniaturization.

[0114] [1.3.2 Effects, etc.] In the piping assembly 10B described above, one or more protruding components 6 include a first protruding component 6-1 and a second protruding component 6-2 facing each other across the central axis C3 of the straight pipe (vertical pipe 3, first straight pipe section 31). If θ (the angle between the third end 6c and the fourth end 6d of the first protruding component 6-1 relative to the central axis C3 of the first straight pipe section 31 in a cross section orthogonal to the central axis C3 and passing through the top 6e) is set as θ1, then θ1 is 60° or more and 210° or less. If θ (the angle between the third end 6c and the fourth end 6d of the second protruding component 6-2 relative to the central axis C3 of the first straight pipe section 31 in a cross section orthogonal to the central axis C3 of the first straight pipe section 31 and passing through the top 6e) is set as θ2, then θ2 is 60° or more and 210° or less. This structure can increase flow rate while achieving miniaturization.

[0115] In piping component 10B, θ1+θ2 is less than 360°. This structure enables increased flow rate while achieving miniaturization.

[0116] [2. Variations] The embodiments disclosed herein are not limited to embodiments 1 to 3 described above. Various modifications can be made to embodiments 1 to 3, depending on the design, etc., as long as the objectives of this disclosure are achieved. Hereinafter, variations of embodiments 1 to 3 are listed. The variations described below can be appropriately combined and applied.

[0117] Furthermore, although the following content can be applied in any of the above-described embodiments 1 to 3, the reference numerals used in embodiment 1 are still used for the purpose of simplifying the description and are not intended to exclude application to embodiments 2 and 3.

[0118] In one variation, the straight pipe of the piping component 10 is not limited to the first straight pipe section 31, but may also be the riser pipe 3 itself. In this case, the riser pipe 3 may be made of a single pipe material.

[0119] In one variation, the protruding member 6 does not necessarily need to be integrally formed with the straight pipe, such as the first straight pipe section 31. The protruding member 6 can be formed separately from the straight pipe and then joined together. This increases the degree of freedom in the arrangement of the protruding member 6.

[0120] In one variation, the number of protruding parts 6 is not particularly limited. The piping component 10 may have more than one protruding part 6. When viewed from the direction of the central axis of the straight pipe (e.g., the first straight pipe section 31), at least one of the more than one protruding part 6 may be asymmetrical or symmetrical. At least one of the more than one protruding part 6 may be integrally formed with the straight pipe (e.g., the first straight pipe section 31) or may be formed separately. The more than one protruding part 6 does not necessarily have to be of the same shape and size, and may have different shapes and sizes. In the case of multiple protruding parts 6, the positions of the tops 6e of the multiple protruding parts 6 may also differ in the direction of the central axis of the straight pipe.

[0121] In the above embodiment, the second curved pipe 52 and the first straight pipe portion 31 are formed separately, but they can also be formed integrally. This allows for both miniaturization and increased flow rate. In this case, the receiving port 521 may not be necessary in the second curved pipe 52. The marking 313 may also not be necessary in the first straight pipe portion 31.

[0122] In one variation, a protruding member 6 is provided to reduce pressure loss at the second bend 52, but this is not a limitation; it can also be provided to reduce pressure loss at joints other than the second bend 52. For example, as a joint that takes into account such pressure loss, there exists a joint having a first receiving port and a second receiving port facing a different direction from the first receiving port. Examples of such joints include elbows or T-joints (Tees) such as the second bend 52. A T-joint has first to third receiving ports facing different directions, causing the flow path from the second receiving port to merge with the flow path from the third receiving port and flow towards the first receiving port. A straight pipe is connected to the first receiving port relative to the T-joint.

[0123] In a modified example, the first end 6a of the protruding member 6 does not necessarily have to coincide with the corner 520c of the second curved tube 52.

[0124] In a variation, the shape and size of the protruding member 6 are not limited to the embodiments described above.

[0125] In a variation, the shape and size of part or all of the piping system 1 may differ from the embodiments described above. For example, unlike the embodiments described above, in the piping system 1, the shape of the second bend 52 and / or the shape of the riser 3 may not be circular but polygonal.

[0126] In one variation, the materials of the components of piping system 1 do not necessarily have to be rigid polyvinyl chloride (PVC). The materials of the components of piping system 1 can be determined according to the requirements of piping system 1, for example, they can be synthetic resins such as polyethylene. Alternatively, the materials of the components of piping system 1 may not be synthetic resins, but metals.

[0127] In a variation, the first straight section 31 may also not have the marking 313.

[0128] In a variation, piping system 1 may not necessarily have a gutter 2. For example, if building 11 has a structure with an inlet (collector) such as a balcony, the first bend 51 of piping system 1 may be connected to the inlet (collector) of building 11.

[0129] In one variation, the drainage 7 can be a type of drainage structure generally considered not to contribute to or promote siphoning. In another variation, the piping system 1 may not necessarily have drainage 7. Drainage 7 is not a necessary structure in the piping system 1; it can be appropriately installed considering the installation environment of the piping system 1, etc.

[0130] [3. Method] As can be seen from the above embodiments and variations, this disclosure includes the following methods.

[0131] [Method 1] A piping component, have: A straight pipe, disposed downstream of the connector, the connector having a first receiving port and a second receiving port facing a different orientation from the first receiving port; and One or more protruding components are disposed inside the straight pipe, thereby locally reducing the flow path cross-sectional area of ​​the straight pipe. The one or more protruding components include: The first end and the second end along the length of the central axis of the straight tube; The third and fourth ends in the width direction orthogonal to the length direction; and The top, located between the first end and the second end, minimizes the cross-sectional area of ​​the flow path in the straight pipe. In a cross section orthogonal to the central axis of the straight tube and passing through the top, when the angle between the third end and the fourth end relative to the central axis of the straight tube is set as θ, θ is greater than 45° and less than 210°.

[0132] [Method 2] The piping components according to method 1 θ is greater than 60° and less than 180°.

[0133] [Method 3] Piping components according to method 1 or 2 In the cross-section, the surface of the protruding member between the third and fourth ends is curved.

[0134] [Method 4] Piping components according to any one of methods 1 to 3, The one or more protruding components include a first protruding component and a second protruding component that are opposed to each other across the central axis of the straight tube. When the first protruding component is set to θ1, θ1 is 45° or higher and 210° or lower. When the θ of the second protruding component is set to θ2, θ2 is 45° or more and 210° or less.

[0135] [Method 5] Piping components according to method 4 θ1+θ2 is less than 360°.

[0136] [Method 6] Piping components according to any one of methods 1 to 5, When viewed from the direction of the central axis of the straight tube, at least one of the more than one protruding member has an asymmetrical shape.

[0137] [Method 7] Piping components according to any one of methods 1 to 6, At least one of the more than one protruding member is integrally formed with the straight tube.

[0138] [Method 8] Piping components according to any one of methods 1 to 7, When the maximum value of the flow path cross-sectional area is set as A and the minimum value of the flow path cross-sectional area is set as A1, (A-A1) / A≤0.5.

[0139] [Method 9] Piping components according to any one of methods 1 to 8, When the inner diameter of the straight pipe is set as d and the length of the one or more protruding components is set as L, 0.5d≤L≤5.0d.

[0140] [Method 10] Piping components according to any one of methods 1 to 9, When the inner diameter of the straight pipe is set as d and the height at the top of the one or more protruding components is set as H, 0.05d≤H≤0.40d.

[0141] The above-mentioned methods 2 through 10 are arbitrary elements.

[0142] Industrial availability This disclosure can be applied to piping components. Specifically, this disclosure can be applied to piping components that partially reduce the flow path cross-sectional area of ​​straight pipes.

[0143] Explanation of reference numerals in the attached figures 10, 10A, 10B Piping components 31. First Directly Managed Department (Directly Managed) 52 Second bend pipe (joint) 521 Receiving Port (First Receiving Port) 522 Receiving Port (Second Receiving Port) 6,6A Protruding component 6-1 First protruding component (protruding component) 6-2 Second protruding component (protruding component) 6a First end 6b Second end 6c Third end 6d Fourth end 6e Top

Claims

1. A piping component, have: A straight pipe, disposed downstream of the connector, the connector having a first receiving port and a second receiving port, the second receiving port having a different orientation than the first receiving port; and One or more protruding components are disposed inside the straight pipe, thereby locally reducing the flow path cross-sectional area of ​​the straight pipe. The one or more protruding components include: The first end and the second end along the length of the central axis of the straight tube; The third and fourth ends in the width direction orthogonal to the length direction; and The top, located between the first end and the second end, minimizes the cross-sectional area of ​​the flow path in the straight pipe. In a cross section orthogonal to the central axis of the straight tube and passing through the top, when the angle between the third end and the fourth end relative to the central axis of the straight tube is set as θ, θ is greater than 45° and less than 210°.

2. The piping component as described in claim 1, θ is greater than 60° and less than 180°.

3. The piping component as described in claim 1, In the cross-section, the surface of the protruding member between the third and fourth ends is curved.

4. The piping component as described in claim 1, The one or more protruding components include a first protruding component and a second protruding component that are positioned opposite each other across the central axis of the straight tube. When the first protruding component is set to θ1, θ1 is 45° or higher and 210° or lower. When the θ of the second protruding component is set to θ2, θ2 is 45° or more and 210° or less.

5. The piping component as described in claim 4, θ1+θ2 is less than 360°.

6. The piping component as described in claim 1, When viewed from the direction of the central axis of the straight tube, at least one of the more than one protruding member has an asymmetrical shape.

7. The piping component as described in claim 1, At least one of the more than one protruding member is integrally formed with the straight tube.

8. The piping component as described in claim 1, When the maximum value of the flow path cross-sectional area is set as A and the minimum value of the flow path cross-sectional area is set as A1, (A-A1) / A≤0.

5.

9. The piping component as claimed in claim 1, When the inner diameter of the straight pipe is set as d and the length of the one or more protruding components is set as L, 0.5d≤L≤5.0d.

10. The piping component as claimed in claim 1, When the inner diameter of the straight pipe is set as d and the height at the top of the one or more protruding components is set as H, 0.05d≤H≤0.40d.

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