EP3227499B1 - Sanitärabfallrohrsystem und ein entlüftungsventil für sanitärabfallrohrsystem - Google Patents

Sanitärabfallrohrsystem und ein entlüftungsventil für sanitärabfallrohrsystem Download PDF

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Publication number
EP3227499B1
EP3227499B1 EP14808621.8A EP14808621A EP3227499B1 EP 3227499 B1 EP3227499 B1 EP 3227499B1 EP 14808621 A EP14808621 A EP 14808621A EP 3227499 B1 EP3227499 B1 EP 3227499B1
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EP
European Patent Office
Prior art keywords
valve
pipe section
pressure
pipe
plate
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EP14808621.8A
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English (en)
French (fr)
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EP3227499A1 (de
Inventor
Lars ØRTOFT
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Ortoft Holding Aps
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Ortoft Holding Aps
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/08—Ventilation of sewers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
    • E03C1/1225—Arrangements of devices in domestic waste water pipe-line systems of air admittance valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/146—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with springs

Definitions

  • the present invention relates to air venting of sanitary waste pipes such as household toilet and drainage pipes and especially to an improved valve for air venting sanitary waste pipes and being adapted for connection to a sanitary waste pipe system, and comprising a valve pipe section having a first end being adapted for connection to a pipe extending upwardly form the sanitation waste pipe system, such as the upper end of a stack pipe and a second end, and where a valve body is arranged in the valve pipe section between said first and second ends and being connected to the valve pipe section so that it is allowed to be positioned in a closed position where it restricts air flow through the valve pipe section and at least one open position where it allows air to flow through the valve pipe section, and where the sanitary waste pipe venting valve further comprises a valve control member being adapted for allowing the valve body to move from its closed position to an open position when the pressure in said first end of the valve pipe section is lower than a certain pressure below the pressure in said second end of the valve pipe section,.
  • Such air venting valves are often used in sanitary waste pipe systems having an upwardly open vertical stack pipe. In this relation they are used primarily for avoiding odors from the vertical stack pipe but they may be used for other purposes such as air venting of public drainage systems where the valves can be connected to the upper end of a vertical venting pipe extending upwardly from a horizontally extending sewer pipe. Therefore in this context the term sanitary waste pipe system comprises any waste water conducting pipes having one or more pipes extending from the conducting pipe and to free air in order to equalize the pressure in the conducting pipe with the atmospheric pressure.
  • valves are used in order to allow ambient air to enter into the stack pipe when the ambient pressure is higher than the pressure in the stack pipe, and thereby reducing the risk of having occasional pressure variations in the stack pipe due to e.g. water downfall breaking the water trap seals arranged in the stack pipe system.
  • valves are adapted for closing the air passage when the pressure in the sanitary waste pipe system is higher than the ambient pressure.
  • Air venting valve of the above mentioned kind is known from e.g. EP patent application no. 100657 , US patent application no. 2009/0320936 or US patent no. 6532988 .
  • US patent no. 2526019 discloses a relief valve for tanks comprising two valve mebers, one configured for opening when the pressure in the tank is significantly higher and the other configured for opening when it is significantly lower than the ambient pressure.
  • AT patent no. 381772 discloses a valve for a pipeline comprising a flap valve member having a stationary and a movable half part that can rotate about a hinge axis, urged by pressure differences acting on the movable half part, and against the force of a spring to either side of its closed position.
  • GB patent application no. 2160951 discloses a cold room two-way flap valve with two independently movable plate halfes, one configured for opening when the pressure in the tank is significantly higher and the other configured for opening when it is significantly lower on one side of the flap valve than on the other side.
  • valve control member is furthermore adapted for allowing the valve body to move from its closed position to an open position when the pressure in said first end of the valve pipe section is higher than a certain value above the pressure in said second end of the valve pipe section.
  • the air venting valve is able to compensate for pressure drops as well as pressure rises in the sanitary waste pipe system, and at the same time ensuring that no air escapes from the sanitary waste pipe to the environment as long as the pressure in the sanitary waste pipe is near the pressure in the environment (atmospheric pressure).
  • the air venting valve is advantageous because it provides such pressure compensation especially in vertical stacked pipes as it reduces the amount of cold air entering from the environment and into the stacked pipe, and thereby the heat loss from e.g. a building where the stacked pipe is installed.
  • waste pipe will not be cooled by the cold air, and thereby problems with internal condensation on the pipe and corrosion is reduced, and so is the need for thermal insulation of the pipe. This also reduces the risk of having rats entering into or escaping from the waste pipe.
  • the valve opens when the pressure difference between the outside air pressure and in the waste pipe exceeds a given value, but to ensure it does not exceed a maximum permissible eg. +/- 150 Pa.
  • valve control is adapted for adjusting said first and/or second certain pressure in said first end of the valve pipe section, so as to provide the possibility e.g. to adapt the valve closing and opening pressures to local standards and building codes.
  • the valve member is according to the invention a plate valve arranged inside the valve pipe section and separating the first and the second end of the valve pipe section, and where the plate valve comprises a valve plate.
  • the valve control is adapted for allowing the valve plate to move into an open position in the first end of the valve pipe section when the pressure in said first end of the valve pipe section is lower than a first certain pressure below the pressure in said second end of the valve pipe section, and to move the valve plate into an open position in the second end of the valve pipe section when the pressure in said first end of the valve pipe section is higher than a second certain pressure above the pressure in said second end of the valve pipe section, and to move the valve plate into a closed position between the open positions in the first and second valve pipe sections when the pressure in the first end of the valve pipe section is higher than the first certain pressure and lower than the second certain pressure.
  • valve plate is mounted in the valve pipe section via a hinge arranged at one side or elsewhere of the valve plate
  • valve control comprises at least one spring element or magnets adapted for keeping the valve plate in said closed position when the pressure in the first end of the valve pipe section is higher than the first certain pressure and lower than the second certain pressure, and for allowing the valve plate to move, due to the force applied on the valve plate by pressure difference in the first and the second end of the valve pipe section, into one of its open positions, when the pressure in the first end of the valve pipe section is either lower than the first certain pressure or higher than the second certain pressure and against the spring force applied to the valve plate by said spring element.
  • spring element is to be understood as being any kind of element that may be elastically deformed to an extend allowing the valve plate to open from its closed position
  • examples of such springs could be a tension spring, a magnet, a helical spring, a leaf spring, or a rubber element.
  • valve control may advantageously comprise an adjustment mechanism adapted for adjusting said first and/or second certain pressure in said first end of the valve pipe section by prestressing the spring element, and the adjustment mechanism is preferably accessible from the outside of the valve pipe section.
  • the valve plate may preferably comprise thermally insulating material arranged at least on one side of the valve plate so as to provide a thermal insulation between the first and the second end of the valve pipe section, when the valve plate is moved to its closed position.
  • thermally insulating material arranged at least on one side of the valve plate so as to provide a thermal insulation between the first and the second end of the valve pipe section, when the valve plate is moved to its closed position.
  • the outside of at least the first end of the valve pipe section may advantageously also be covered with thermally insulating material.
  • valve plate tilts about an axis or hinge being arranged at right angles to the symmetry axis of the valve pipe section.
  • the sanitary waste pipe venting valve according to the invention is especially advantageous for venting sanitary waste pipe systems where the sanitary waste pipe venting valve is arranged at an upper end of a substantially vertical pipe.
  • the valve pipe section may preferably define a substantially vertical flow path from its first end to its second end.
  • Fig. 1 , 2 and 3 all shows the same part of a sanitary waste pipe system, and in the form of an upper end of a vertically arranged stacked pipe 1 arranged in a building and extending upwardly through the roof 2 of the building.
  • the stacked pipe is connected at its lower end to the sanitary waste pipe system (not shown).
  • a valve pipe section 13 with a valve plate 7 installed inside is mounted with glue 4 or the like on the top 3 of the stacked pipe 1 extending above the roof 2 of the building.
  • valve pipe section 13 on top of the stacked pipe 1
  • other means for mounting the valve pipe section 13 on top of the stacked pipe 1 are possible, such as the use of prior art elastic or rigid pipe or tube connectors, being adapted for connecting pipe ends having similar or different cross sections.
  • one or more hose clamps may be used.
  • valve pipe section 13 in this position defines a first end below the valve plate 7 and a second end above the valve plate 7 and being open to free air via the opening 10.
  • valve plate 7 is shown in a closed position where it restricts flow of air between the first and the second end of the valve pipe section 13.
  • the valve plate 7 rotates about an axis or hinge hinged at one side via a hinge 8 and a spring (not shown) that keeps the valve plate 7 in the closed position when and as long as the pressure difference in the first and the second end of the valve pipe section 13 is smaller than a certain value. If however the pressure in first end of the valve pipe section 13 drops below a certain value, then the valve plate 7 is pressed downwardly as shown by the arrow 11, and against the force of the spring, in the valve pipe section 13 such as it is shown in figure 2 . Thereby the valve plate 7 allows free air to enter from outside of the building and into the sanitation waste pipe system, so that e.g. water traps (not shown) arranged in the sanitation waste pipe system are not affected by the pressure drop in the sanitation waste pipe system.
  • valve plate 7 is, in the same way, allowed to move upwardly as shown by the arrow 12 in figure 3 and into the second end of the valve pipe section 13 in situations when the pressure on the first end of the valve pipe section 13 rises to a certain level above the surrounding pressure outside the building.
  • This position of the valve plate 7 is shown on figure 3 , and here the valve plate 7 allows a small amount of air from the waste pipe air venting valve to escape from the sanitation waste pipe system, so that water traps (not shown) arranged in the sanitation waste pipe system are not affected by the pressure rise in the sanitation waste pipe system.
  • the sanitation waste pipe air venting valve significantly reduces odors escaping from the sanitation waste pipe system with respect to what would be the case if the valve plate was not present. Furthermore in areas with a cold climate the valve reduces the amount of free air that is allowed to enter into the sanitation waste pipe system, and thereby it reduces heat loss from the building.
  • valve plate 7 is made of, or comprising a thermally insulating material 6, and the first end of the valve pipe section 13 is also surrounded by a thermally insulating material 9.
  • Fig. 4 is a sketch showing a pipe section 13 adapted for insertion into the upper end of e.g. a stacked pipe.
  • the tubular section has a lower part 24 provided with flexible ribs allowing the lower part of the pipe section 13 to be inserted into an upper end of a the stacked pipe so as to form an open upper end 10 of the stacked pipe.
  • the pipe section 13 has a circular cross section and a valve plate 7 is arranged so that it can rotate about a hinge axle 26 defined by the hinges 8 arranged in the pipe section 13.
  • the hinge axle is arranged perpendicular to the symmetry axis 23 of the pipe section 13.
  • a coiled spring 20 is arranged so that it has one end being connected to the inner side of the tubular section 13 via the pin 21, and the other end connected to a valve control pin 22. Extending downwardly from the valve plate 7.
  • the hinge axle 26 is arranged so that it separates the valve plate 7 into a first part 27 and a second part 28, and so that the first part has an area beind significantly larger than the area of the second part, then this two way valve 7 will open both when the pressure below the valve plate 7 is higher and lower than the pressure above the valve plate, and the required differential pressure may be adjusted by e.g. adjusting the tension of the coiled spring 20 or its point of attachment to the pipe section 13
  • Fig. 5 and 6 are principle sketches showing another alternative embodiment of the invention which could e.g. be arranged in the pipe section 13 shown in fig. 4 , but where the valve plate 7 as an alternative to the coiled spring 20 arrangement is provided with a set of magnets 29, and where the pipe section 13 (not shown) is provided with a corresponding set of magnets 30 arranged so that the magnets 29 on the valve plate, and the magnets 30 on the pipe section 13 are attracting each other's trying to keep the valve plate 7 in its closed position shown in the middle of figure 6 .
  • this two way valve 7 will open both when the pressure below the valve plate 7 is higher and lower than the pressure above the valve plate, and the required differential pressure may be adjusted by e.g. adjusting the strength or the position of the magnets, e.g. by moving them closer to the hinge axle 26 than the extreme position they have in these figure.
  • FIG 7 Yet another embodiment of the valve arrangement according to the invention is shown on figure 7 where the two brackets 32 are e.g. arranged inside the pipe section 13 shown on figure 4 , and an rod shaped spring element 33 formed by an elastic material extends between the two bracket 32.
  • the valve plate 7 is connected to the spring element 33 by means of a second bracket 34 arranged between the two brackets 32 and allowing the valve plate to turn about a hinges axle defined by the spring element 33.
  • valve plate 7 As the valve 7 is mounted to the spring element 13 at a position significantly away from the center of the valve plate, then the valve plate 7 will have a first part 27 with an area being significantly larger than the area of the second part 28, and this two way valve 7 will therefore open both when the pressure below the valve plate 7 is higher and lower than the pressure above the valve plate.
  • the required differential pressure for opening the valve may be adjusted by e.g. adjusting the strength or the tension of the spring element or by adjusting the difference between the area of the first 27 and the second 28 part of the valve 7.

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  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Structural Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Safety Valves (AREA)

Claims (9)

  1. Entlüftungsventil für ein sanitäres Abflussrohr, das zur Verbindung mit einem sanitären Abflussrohrsystem angepasst ist und einen Ventilrohrabschnitt (13) mit einem ersten Ende, das zur Verbindung mit einem Abflussrohr in dem Sanitärabflussrohrsystem angepasst ist, wie etwa dem oberen Ende eines Stapelrohrs und einem zweiten Ende umfasst, und bei dem ein Ventilelement (6) in dem Ventilrohrabschnitt zwischen dem ersten und dem zweiten Ende angeordnet ist und das beweglich mit dem Ventilrohrabschnitt verbunden ist, so dass es in einer geschlossenen Position, in der es einen Luftstrom durch den Ventilrohrabschnitt beschränkt, und mindestens einer offenen Position, in der es Luft durch den Ventilrohrabschnitt strömen lässt, angeordnet werden kann, und bei dem das Entlüftungsventil für ein sanitäres Abflussrohr weiter eine Ventilsteuerung (20, 29, 30, 33) umfasst, die angepasst ist, damit sich das Ventilelement aus seiner geschlossenen Position in eine offene Position bewegen kann, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts niedriger ist als ein erster bestimmter Druck unterhalb des Drucks in dem zweiten Ende des Ventilrohrabschnitts, und bei dem die Ventilsteuerung weiter angepasst ist, damit sich das Ventilelement aus seiner geschlossenen Position in eine offene Position bewegen kann, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts höher ist als ein zweiter bestimmter Druck oberhalb des Drucks in dem zweiten Ende des Ventilrohrabschnitts, und dass das Ventilelement ein Plattenventil ist, das innerhalb des Ventilrohrabschnitts angeordnet ist und das erste und das zweite Ende des Ventilrohrabschnitts trennt, und bei dem das Plattenventil eine Ventilplatte (7) umfasst, und die Ventilsteuerung angepasst ist, damit sich die Ventilplatte in dem ersten Ende des Ventilrohrabschnitts in eine offene Position bewegen kann, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts niedriger ist als der erste bestimmte Druck unterhalb des Drucks in dem zweiten Ende des Ventilrohrabschnitts, dadurch gekennzeichnet, dass die Ventilsteuerung (20, 29, 30, 33) weiter angepasst ist, um die Ventilplatte (7) in eine offene Position in dem zweiten Ende des Ventilrohrabschnitts (13) zu bewegen, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts höher ist als der zweite bestimmte Druck oberhalb des Drucks in dem zweiten Ende des Ventilrohrabschnitts, und um die Ventilplatte (7) in eine geschlossene Position zwischen den offenen Positionen in dem ersten und zweiten Ventilrohrabschnitt zu bewegen, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts höher ist als der erste bestimmte Druck und niedriger ist als der zweite bestimmte Druck, und wobei die Ventilplatte (7) in dem Rohrabschnitt so angeordnet ist, dass sie sich um eine Gelenkachse (26) drehen kann, die senkrecht zur Symmetrieachse (23) des Rohrabschnittes angeordnet ist, und wobei die Gelenkachse (26) so angeordnet ist, dass sie die Ventilplatte (7) in einen ersten Teil (27) und einen zweiten Teil (28) so aufteilt, dass der erste Teil eine Fläche aufweist, die größer ist als die Fläche des zweiten Teils.
  2. Entlüftungsventil für ein sanitäres Abflussrohr nach Anspruch 1, dadurch gekennzeichnet, dass die Ventilsteuerung zum Einstellen des ersten und/oder zweiten bestimmten Drucks in dem ersten Ende des Ventilrohrabschnitts angepasst ist.
  3. Entlüftungsventil für ein sanitäres Abflussrohr nach Anspruch 1, dadurch gekennzeichnet, dass sich die in dem Ventilrohrabschnitt montierte Ventilplatte um eine Achse oder ein Gelenk dreht, die/das an einer Seite der Ventilplatte angeordnete ist, und dadurch, dass die Ventilsteuerung mindestens ein Federelement (20) umfasst, das angepasst ist, um die Ventilplatte in der geschlossenen Position zu halten, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts höher ist als der erste bestimmte Druck und niedriger ist als der zweite bestimmte Druck, und damit sich die Ventilplatte aufgrund der durch die Druckdifferenz in dem ersten und zweiten Ende des Ventilrohrabschnitts auf die Ventilplatte ausgeübten Kraft in eine ihrer offenen Positionen bewegen kann, wenn der Druck in dem ersten Ende des Ventilrohrabschnitts entweder niedriger ist als der erste bestimmte Druck und höher ist als der zweite bestimmte Druck und entgegen der durch das Federelement auf die Ventilplatte ausgeübten Federkraft.
  4. Entlüftungsventil für ein sanitäres Abflussrohr nach Anspruch 2 und 3, dadurch gekennzeichnet, dass die Ventilsteuerung einen Einstellmechanismus umfasst, der zum Einstellen des ersten und/oder zweiten bestimmten Drucks in dem ersten Ende des Ventilrohrabschnitts durch Vorspannung des Federelements angepasst ist.
  5. Entlüftungsventil für ein sanitäres Abflussrohr nach Anspruch 4, dadurch gekennzeichnet, dass der Einstellmechanismus von außerhalb des Ventilrohrabschnittes erreichbar ist.
  6. Entlüftungsventil für ein sanitäres Abflussrohr nach einem oder mehreren der Ansprüche 1, 2, 3, 4 oder 5, dadurch gekennzeichnet, dass die Ventilplatte thermisch isolierendes Material (6) umfasst, das zumindest auf einer Seite der Ventilplatte angeordnet ist, um eine thermische Isolation zwischen dem ersten und dem zweiten Ende des Ventilrohrabschnitts bereitzustellen, wenn die Ventilplatte in ihre geschlossene Position bewegt wird.
  7. Entlüftungsventil für ein sanitäres Abflussrohr nach Anspruch 6, dadurch gekennzeichnet, dass die Außenseite von mindestens dem ersten Ende des Ventilrohrabschnitts mit thermisch isolierendem Material (9) bedeckt ist.
  8. Entlüftungsventil für ein sanitäres Abflussrohr nach einem oder mehreren der Ansprüche 1, 2, 3, 4, 5, 6 oder 7, dadurch gekennzeichnet, dass sich die Ventilplatte im Wesentlichen senkrecht zu den Seitenwänden des Ventilrohrabschnittes erstreckt.
  9. Sanitäres Abflussrohrsystem, umfassend ein Entlüftungsventil für ein sanitäres Abflussrohr nach einem der vorstehenden Ansprüche.
EP14808621.8A 2014-12-05 2014-12-05 Sanitärabfallrohrsystem und ein entlüftungsventil für sanitärabfallrohrsystem Active EP3227499B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/076741 WO2016087004A1 (en) 2014-12-05 2014-12-05 A sanitary waste pipe system and an air venting valve for a sanitary waste pipe system

Publications (2)

Publication Number Publication Date
EP3227499A1 EP3227499A1 (de) 2017-10-11
EP3227499B1 true EP3227499B1 (de) 2019-11-20

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EP14808621.8A Active EP3227499B1 (de) 2014-12-05 2014-12-05 Sanitärabfallrohrsystem und ein entlüftungsventil für sanitärabfallrohrsystem

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EP (1) EP3227499B1 (de)
DK (1) DK3227499T3 (de)
WO (1) WO2016087004A1 (de)

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Publication number Priority date Publication date Assignee Title
CN112728692A (zh) * 2020-12-02 2021-04-30 王利 一种建筑施工用通风抑尘装置

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
GB333434A (en) * 1929-09-28 1930-08-14 Joseph Edge Means for circulating the air in rooms
US2526019A (en) * 1945-09-18 1950-10-17 Fowler William Douglas Relief valve
ES273804Y (es) 1982-07-29 1984-08-01 Kentsub Limited Valvula para admision de aire
EP1026329A1 (de) 1999-02-03 2000-08-09 Kurt Sture Birger Ericson Lufteinlassventil für ein Abwasserleitungssystem
US8555915B2 (en) * 2008-06-25 2013-10-15 Richard A. Brunner Dual action low head isolation valve

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WO2016087004A1 (en) 2016-06-09
DK3227499T3 (da) 2020-02-24
EP3227499A1 (de) 2017-10-11

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