EP2944731B1 - Chambre pour une évacuation d'eau de pluie et procédé pour sa fabrication - Google Patents

Chambre pour une évacuation d'eau de pluie et procédé pour sa fabrication Download PDF

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Publication number
EP2944731B1
EP2944731B1 EP14167533.0A EP14167533A EP2944731B1 EP 2944731 B1 EP2944731 B1 EP 2944731B1 EP 14167533 A EP14167533 A EP 14167533A EP 2944731 B1 EP2944731 B1 EP 2944731B1
Authority
EP
European Patent Office
Prior art keywords
chamber
main body
pipe connection
section
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14167533.0A
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German (de)
English (en)
Other versions
EP2944731A1 (fr
Inventor
Harri Ulmanen
Niclas Bolander
Jan-Olof Olofsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uponor Infra Oy
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Uponor Infra Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to EP14167533.0A priority Critical patent/EP2944731B1/fr
Publication of EP2944731A1 publication Critical patent/EP2944731A1/fr
Application granted granted Critical
Publication of EP2944731B1 publication Critical patent/EP2944731B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/024—Manhole shafts or other inspection chambers; Snow-filling openings; accessories made of plastic material
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/021—Connection of sewer pipes to manhole shaft
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401—Gullies for use in roads or pavements

Definitions

  • the invention relates to a chamber for a rainwater drain with a bottom, an inlet for collecting rainwater and an outlet for routing the rainwater.
  • the invention further relates to a method for manufacturing such a chamber.
  • Chambers for a rainwater drain are known from the art, for example from the German utility model DE 20107460 U1 . Such chambers are typically used on roadsides, parking lots, sealed surfaces or the like. These chambers are provided for collecting rainwater and leading it further below the earth's surface, in order to control the rainwater drain.
  • GB 1 363 302 A discloses a manhole for use in drainage systems.
  • GB 1 358 986 A discloses drainage traps.
  • GB 2 319 542 A discloses a prefabricated plastics road gully having an outlet socket projecting from the gully.
  • US 2005/0178721 A1 discloses a septic tank formed of a blow moulded body.
  • GB 2 145 444 A discloses manhole components moulded from a plastics material.
  • GB 2 097 030 A discloses a plastics gully and a method of manufacturing such gully.
  • GB 2 046 811 A discloses an inspection chamber and a method of manufacturing such chamber.
  • One object of the invention is to disclose a chamber and a method for its manufacturing, which facilitate a reliable and cost-saving production of the chamber.
  • a chamber for a rainwater drain comprises a main body with a bottom, an inlet for collecting rainwater and an outlet for routing the rainwater.
  • the chamber is manufactured by blow moulding.
  • the outlet comprises a cylindrical first pipe connection with a first outer diameter for a pipe to be attached to and a cylindrical second pipe connection with a second outer diameter for a pipe to be attached to, wherein the second pipe connection is adjacent to the first pipe connection and wherein the first diameter is larger than the second diameter.
  • Rotational axes of symmetry of the first pipe connection and the second pipe connection are arranged parallel offset such that cross sections of both pipe connections touch each other in at least one bottom point, if the cross sections are projected in a plane that runs normally to both rotational axes of symmetry.
  • the chamber Due to the blow molding, the chamber is produced as one piece. This means that the chamber is manufactured in one single blow moulding cycle. Hence, manufacturing costs can be highly reduced compared to handmade chambers, e.g. by up to 50%. In contrast to handmade chambers, single parts of the chamber do not need to be joined in subsequent manufacturing steps, such as welding. Further, quality problems with regard to water tightness or tolerances are avoided or at least reduced.
  • the chamber enables a constant flow channel without any gaps or flow obstacles. Furthermore, a chamber of high quality with regard to material usage and flow properties of the rainwater can be manufactured. Further, the chamber offers ease of inspection, in particular with regard to water leaks or the like.
  • the main body of the chamber is at least partially cylindrical and the outlet extends in an essentially radial direction with regard to a central longitudinal axis of the main body.
  • the inlet of the main body is typically opened in the direction of gravity. This makes it possible to conduct the rainwater via the outlet substantially parallel to the earth's surface.
  • an inner surface of the bottom of the main body is inclined and/or rounded towards a center of the main body and/or towards the outlet in direction of gravity.
  • the bottom within the main body is inclined and/or rounded such that the bottom surface is funnel-shaped in a direction of gravity towards the center and/or the outlet.
  • a transition of a sidewall of the main body and the bottom of main body is rounded.
  • the transitions of every sidewall of the main body and the bottom are rounded. This ensures an even material distribution in the blow moulding process. This enables a constant wall thickness of the chamber. Further, flow properties of the rainwater within the chamber are improved.
  • the main body comprises, with regard to a central longitudinal axis, a first section with the inlet and a second section with the bottom and the outlet, wherein a cross-sectional area of the first section is larger than the second section.
  • a transition of the inner contour of the main body from the first section to the second section is rounded and/or funnel-shaped.
  • an outer end of the outlet lays within a projected cross section of the first section normally to a central longitudinal axis of the main body.
  • a method for manufacturing a chamber according to the first aspect of the invention comprises blow moulding of the chamber.
  • the chamber is produced in one blow moulding cycle.
  • the method for manufacturing the chamber substantially enables the aforementioned advantages.
  • Figures 1 to 4 show different views of a chamber 1, which is provided for a controlled rainwater drain.
  • Figure 1 shows a perspective view
  • figures 2 and 3 show side views
  • figure 4 shows a top view of the chamber 1.
  • the chamber 1 is produced in one single blow moulding cycle and is made of a plastic material.
  • the plastic material consists of polyethylene (PE).
  • PE polyethylene
  • LD-PE low density polyethylene
  • PP polypropylene
  • PB polybutene
  • PROT temperature-resistant polyethylene
  • the chamber 1 has a main body 2, which is partially corrugated.
  • the main body 2 has a bottom 3, an inlet 4 for collecting rainwater and an outlet 5 for disposal of the rainwater.
  • the bottom 3 may also be called bottom part of the main body 2.
  • the main body 2 is cylindrical around a central longitudinal axis 6.
  • the central longitudinal axis 6 is a rotational axis of symmetry of the main body 2.
  • the inlet 4 is an opening of the main body 2.
  • the opening of the inlet 4 is limited by the cylindrical sidewall 7 of the main body 2.
  • An inner diameter of the main body 2 is about 317 mm.
  • An outer diameter of the main body 2 is about 350 mm.
  • the chamber 1 is buried on roadsides, in order to collect rainwater via the inlet 4 and dispose it via the outlet 5.
  • Conventional chamber covers can be connected to the main body 2 covering the inlet 4, e.g. in a gully installation.
  • the chamber 1 enables a controlled rainwater drain, wherein the rainwater is conducted essentially parallel to the earth's surface.
  • the chamber 1 is arranged such that the opening of the inlet 4 is opened against the direction of gravitational force. In other words, the central longitudinal axis 6 of the chamber 1 falls with the direction of gravity.
  • the chamber 1 is buried at parking lots or other sealed surfaces, which are exposed to rain.
  • the outlet 5 essentially extends in a radial direction 8 (see figure 3 ) with regard to the central longitudinal axis 6.
  • the outlet 5 has a first pipe connection 9 and a second pipe connection 10.
  • the pipe connections 9 and 10 are adapted for a pipe to be attached by conventional means.
  • the pipe connections 9 and 10 are subsequently arranged along the radial direction 8.
  • Both pipe connections 9 and 10 are designed cylindrically, wherein a first diameter of the first pipe connection 9 is larger than a second diameter of the second pipe connection 10.
  • the first diameter of the first pipe connection 9 may be 160 mm and the second diameter of the second pipe connection 10 may be 110 mm.
  • the second pipe connection 10 is opened such that a respective pipe can be attached or connected to the second pipe connection 10 in the field.
  • the second pipe connection 10 is closed or sealed, in order to avoid dirt entering the chamber 1 during installation. Then, before connecting pipes thereto, the pipe connection 10 needs to be exposed or opened.
  • the second pipe connection 10 needs to be removed.
  • the second pipe connection 10 needs to be cut off, e.g. by a saw or a crusher.
  • a groove 11 surrounds the circumference of the first pipe connection 9.
  • the groove 11 is shown in figure 5 , which shows an enlarged and detailed view of an area 21 of figure 4 . Due to the groove 11, the first pipe connection 9 can easily be exposed. Alternatively, the groove 11 is formed as a notch or the like.
  • the chamber provides a universal connector. This allows a user to decide in the field during installation, whether to use a pipe with a diameter according to the first diameter of the first connection or a pipe with a diameter according to the second diameter of the second pipe connection.
  • the first pipe connection 9 has a first rotational axis of symmetry 12 and the second pipe connection 10 has a second rotational axis of symmetry 13. Both rotational axes of symmetry 12 and 13 are arranged parallelly offset and each form an angle of 1° with a plane 14 in the direction of gravity.
  • the plane 14 runs normally to the central longitudinal axis 6. Due to the angle, rainwater entering the main body via the inlet 4 is to leave the main body via the outlet 5 due to gravitational force. Alternatively, the angle may be at least more the 0.5°.
  • the parallel offset is chosen such that a cross section of the first pipe connection 9 and a cross section of the second pipe connection 10 touch each other in at least one bottom point 19, if the cross sections are projected in a plane, that runs normally to both the rotational axes of symmetry 12 or 13 (see Figure 2 ).
  • a transition of the inner bottom from the first pipe connection 9 to the second pipe connection 10 is straight lined, such that the rainwater can leave the first pipe connection 9 into the second pipe connection 10 without any flow obstacles.
  • the sidewall 7 of the chamber 1 and the bottom 3 have transitions which are rounded and comprise two different radii 15.
  • the radii 15 may be, for example, 40 and 80 mm. Due to the roundings, a distribution of material during the blow moulding process is improved. Also, good flow properties for the rainwater within the chamber 1 are achieved.
  • the inside of the chamber 1 is rounded and does not comprise any gaps or edges, which could form obstacles to the rainwater during its flow through the chamber 1.
  • the chamber 1 has a round form, in particular in the middle of the chamber 1, which gives stiffness to the chamber 1 and eases up anchoring of the chamber 1 during installation.
  • the outlet 5 has an inner opening area 16 facing an inside of the main body 2 (see hatched area).
  • An inner surface of the bottom 3 is inclined and rounded towards the inner opening area 16 of the outlet, e.g. forming an angle ⁇ of 4° with egdes of the inner opening area 16.
  • the bottom surface is rounded and inclined towards a center of the main body 2 in the direction of gravity. This has the effect that the bottom 3 within the main body 2 is funnel-shaped towards the inner opening area 16 and thus towards the outlet 5. This guarantees that the rainwater leaves the main body 2 via the outlet 5 without any leftover water within the main body 2. This makes it possible that the chamber 1 fully and quickly dries, when there is no rainwater entering the main body 2 via the inlet 4.
  • FIGS 6 and 7 show two views of a chamber 1 according to a second embodiment.
  • the depicted chamber 1 essentially has the same features as described above with regard to figures 1 to 5 , with the exception that the main body 2 is separated in a corrugated first section 17 and a second section 18.
  • the cylindrical sidewall 7 of the first section 17 is formed around the central longitudinal axis 6.
  • a cross-sectional area of the first section 17 is larger than a cross-sectional area of the second section 18.
  • the second section 18 is arranged decentrally with regard to the central longitudinal axis 6. Further, the second section 18 does not exceed the first section 17 in the radial direction 8. Hence, an outer end 20 of the outlet 5 lays within the projected cross section of the first section 17 along the axis 6.
  • a transition of an inner contour of the main body from the first section 17 to the second section 18 is rounded and/or funnel-shaped. This guarantees substantially the same advantages with regard to flow properties, as described above.
  • the blow moulding process is improved. For example, a material distribution during the blow moulding process is improved. For example, a wall thickness of the chamber 1 is even.
  • Figure 8 shows a sequence diagram of a method M for manufacturing a chamber 1 according to the embodiments described with the aid of figures 1 to 7 .
  • the method M describes one cycle of a blow moulding process, in particular an extrusion blow moulding process.
  • a plastic material is melted down.
  • the material may comprise one of the aforementioned materials.
  • the melted plastic is formed into a parison.
  • the parison is clamped into a mould, which consists at least of two parts.
  • the mould can also be named forming tool.
  • the mould consists of two parts, each representing a negative contour of half of the chamber 1.
  • compressed air is pressured into the parison. Due to the compressed air the parison is pressed against the mould in order to match it and to form the chamber 1.
  • the blow molded chamber 1 within the mould is cooled.
  • the two-part mould is opened such that the blow moulded chamber 1 is ejected.
  • the chamber 1 is finished by turning, polishing or other machining processes in an optional step.
  • the first pipe connection 9 and the second pipe connection 10 may need exact dimensions, in order that pipes can be attached to the chamber 1.
  • these connections 9 and 10 are finished such that a secure and watertight connection to an adjoining pipe is enabled.
  • the mould is designed such that dimensions and/or diameters of the chamber 1 are larger than intended for use.
  • a diameter of the two part-mould corresponding to the main body 2 or the first section 17 may be larger.
  • This allows to blow mould all parts of the chamber 1, especially the outlet 5 of the chamber 1 according to the first embodiment with its pipe connections 9 and 10.
  • a sufficient wall thickness and/or even material usage of all parts of chamber 1 is achieved.
  • This means that there may be left some extra or excess material of the chamber 1, in particular with regard to the corrugated parts of the chamber 1, the main body 2 and/or the first section 17.
  • This excess material for example flash, can be removed later in a subsequent step in particular by one or several machining processes.
  • the chamber 1 is finished into its intended form.
  • the intended diameters and/or the outlet 5 can be carved out.
  • the two-part mould may designed such that the chamber 1 does not need to be finished.
  • a diameter of the two-part mould corresponding to the main body 2 or the first section 17 may be identical to the intended diameter of the main body 2 of the chamber 1.
  • the described method M defines one blow moulding cycle, such that the chamber 1 is blow moulded in one cycle.
  • the chamber 1 has no parts in the inside, such that blow moulding of the chamber 1 is enabled.
  • the chamber 1 is blow molded of a preform, for example a preform in shape of a sock.
  • the preform instead of blow moulding a parison according to step S3 as described above, the preform is put in a mould and is blow moulded therein by compressed air, in order to produce the chamber 1.
  • the chamber 1 is blow moulded of the preform.
  • the preform has larger dimensions and/or diameters than the chamber 1, especially than the corrugated part of the main body 2 or the first section 17. In other words, the preform is oversized when the blow molding process starts.
  • the outlet 5 of the chamber 1 can be blow molded, wherein a sufficiently thick wall thickness of the outlet 5, in particular the first and second pipe connection 9 and 10, is achieved.
  • a sufficiently thick wall thickness of the outlet 5, in particular the first and second pipe connection 9 and 10 is achieved.
  • This excess material for example flash, can be removed later in a subsequent step in particular by one or several machining processes.
  • the chamber 1 is finished into its intended form.
  • the intended diameters and/or the outlet 5 can be carved out.
  • the preform may be produced in one or several steps before blow molding of the chamber 1. Thereby, the preform is produced by injection molding. Other alternatives in producing the preform are suitable, for example a further, previous blow molding process.
  • blow moulding processes can vary and is not limited to the described embodiment. Alternatively, if suitable, injection blow moulding processes or injection stretch blow moulding processes are also possible.
  • the chamber according to the figures 1 to 7 may comprise a collector, which extends along the central longitudinal axis 6 in the direction of gravity below the outlet 5.
  • the collector collects dirt like sand, stones or the like, since these elements sink into the collector due to the gravitational force. The collector avoids clogging of the outlet 5 and its pipe connections.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Claims (13)

  1. Chambre (1) pour une évacuation d'eau de pluie, comprenant un corps principal (2) comportant un fond (3), une entrée (4) destinée à collecter l'eau de pluie et une sortie (5) destinée à acheminer l'eau de pluie, la chambre (1) étant fabriquée au moyen d'un moulage par soufflage,
    dans laquelle :
    - la sortie (5) comprend un premier raccord de tuyau cylindrique (9) présentant un premier diamètre externe pour un tuyau à fixer, et un second raccord de tuyau cylindrique (10) présentant un second diamètre externe et pour un tuyau à fixer, le second raccord de tuyau (10) étant adjacent au premier raccord de tuyau (9) et le premier diamètre étant plus grand que le second diamètre, et
    - les axes de symétrie de rotation (12, 13) du premier raccord de tuyau (9) et du second raccord de tuyau (10) sont disposés en décalage parallèle, caractérisé en ce que le décalage est tel que les sections transversales des deux raccords de tuyau (9, 10) se touchent dans au moins un point inférieur (19), si les sections transversales sont projetées dans un plan s'étendant perpendiculairement aux deux axes de symétrie de rotation (12, 13).
  2. La chambre (1) selon la revendication 1, dans laquelle le corps principal (2) est au moins partiellement cylindrique et dans laquelle la sortie (5) s'étend dans une direction (8) essentiellement radiale par rapport à un axe longitudinal central (6) du corps principal (2).
  3. La chambre (1) selon l'une quelconque des revendications précédentes, dans laquelle une surface interne du fond (3) est inclinée et/ou arrondie vers un centre du corps principal (2) et/ou vers la sortie (5) dans la direction de la gravité.
  4. La chambre (1) selon l'une quelconque des revendications précédentes, dans laquelle une transition entre une paroi latérale (7) du corps principal (2) et le fond (3) du corps principal (2) est arrondie.
  5. La chambre (1) selon l'une quelconque des revendications précédentes, dans laquelle le corps principal (2) comprend, par rapport à un axe longitudinal central (6), une première section (17) comportant l'entrée (4) et une seconde section (18) comportant le fond et la sortie, la plus grande aire en section transversale de la première section (17) étant supérieure à la plus grande aire en section transversale de la seconde section (18).
  6. La chambre (1) selon la revendication 5, dans laquelle une transition d'un contour interne du corps principal (2), depuis la première section (17) vers la seconde section (18), est arrondie et/ou en forme d'entonnoir.
  7. La chambre (1) selon les revendications 5 ou 6, dans laquelle une extrémité externe de la sortie (5) est posée à l'intérieur de la plus grande section transversale projetée de la première section (17) normalement à un axe longitudinal centrale (6) du corps principal (2).
  8. La chambre (1) selon l'une quelconque des revendications précédentes, dans laquelle le premier raccord de tuyau (9) et/ou le second raccord de tuyau (10) comprennent des axes de symétrie de rotation (12, 13) formant un angle supérieur à 0,5° avec un plan (14) dans la direction de la gravité, le plan (14) s'étendant normalement à un axe longitudinal central (6) du corps principal (2).
  9. La chambre (1) selon l'une quelconque des revendications précédentes, dans laquelle le premier raccord de tuyau (9) comprend une rainure (11), en particulier une entaille, formant une marque de coupe, la rainure (11) entourant, au moins partiellement, la circonférence externe du premier raccord de tuyau (9).
  10. Procédé (M) de fabrication d'une chambre (1) selon l'une quelconque des revendications précédentes, le procédé comprenant moulage par soufflage de la chambre (1) .
  11. Le procédé (M) selon la revendication (10), dans lequel une chambre (1) moulée par soufflage est finie au moyen d'un procédé d'usinage.
  12. Le procédé (M) selon les revendications 10 ou 11, dans lequel la chambre (1) est moulée par soufflage à partir d'une préforme.
  13. Le procédé (M) selon l'une quelconque des revendications 10 à 12, dans lequel la matière en excès d'une chambre (1) moulée par soufflage est enlevée.
EP14167533.0A 2014-05-02 2014-05-08 Chambre pour une évacuation d'eau de pluie et procédé pour sa fabrication Active EP2944731B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14167533.0A EP2944731B1 (fr) 2014-05-02 2014-05-08 Chambre pour une évacuation d'eau de pluie et procédé pour sa fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14166882 2014-05-02
EP14167533.0A EP2944731B1 (fr) 2014-05-02 2014-05-08 Chambre pour une évacuation d'eau de pluie et procédé pour sa fabrication

Publications (2)

Publication Number Publication Date
EP2944731A1 EP2944731A1 (fr) 2015-11-18
EP2944731B1 true EP2944731B1 (fr) 2019-07-10

Family

ID=50639312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14167533.0A Active EP2944731B1 (fr) 2014-05-02 2014-05-08 Chambre pour une évacuation d'eau de pluie et procédé pour sa fabrication

Country Status (2)

Country Link
EP (1) EP2944731B1 (fr)
DK (1) DK2944731T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3053986A1 (fr) * 2016-07-12 2018-01-19 Poly Water France Dispositif d'avaloir de chaussee
CN106223395A (zh) * 2016-08-29 2016-12-14 山东胜伟园林科技有限公司 集水罐与集水管埋设布局

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1358986A (en) * 1971-06-30 1974-07-03 Thermo Plastics Ltd Drainage traps
GB1363302A (en) * 1972-10-13 1974-08-14 Hepworth Iron Co Ltd Manholes
GB2046811B (en) * 1979-03-12 1983-01-26 Plastiers Ltd Drainage inspection chambers
GB2097030B (en) * 1981-04-21 1985-05-15 Davidson Pipes John Ltd Trapped gullies
GB2145444B (en) * 1983-08-05 1988-04-07 John Patrick Telford Manhole chambers
GB9619108D0 (en) * 1996-09-12 1996-10-23 Tennants Charles & Co Ltd Road gullies
FI4634U1 (fi) 2000-05-10 2000-09-29 Uponor Innovation Ab Sadevesikaivo
US7144506B2 (en) * 2004-02-18 2006-12-05 Fralo Plastech Mfg., Llc Blow molded septic tank and method of manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DK2944731T3 (da) 2019-10-14
EP2944731A1 (fr) 2015-11-18

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