EP2772451A1 - Behälter mit Expansionselement - Google Patents

Behälter mit Expansionselement Download PDF

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Publication number
EP2772451A1
EP2772451A1 EP14154597.0A EP14154597A EP2772451A1 EP 2772451 A1 EP2772451 A1 EP 2772451A1 EP 14154597 A EP14154597 A EP 14154597A EP 2772451 A1 EP2772451 A1 EP 2772451A1
Authority
EP
European Patent Office
Prior art keywords
container
expansion element
state
medium
expansion
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.)
Withdrawn
Application number
EP14154597.0A
Other languages
English (en)
French (fr)
Inventor
Fredrik Brandt
Magnus Mackaldener
Fredrik Swartling
Robert NORDENHÖK
Ola SANDSTRÖM
Marcus Larsson
Raymond Reinmann
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.)
Scania CV AB
Original Assignee
Scania CV AB
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
Application filed by Scania CV AB filed Critical Scania CV AB
Publication of EP2772451A1 publication Critical patent/EP2772451A1/de
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D79/00Kinds or details of packages, not otherwise provided for
    • B65D79/005Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/008Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
    • B65D79/0084Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the sidewall or shoulder part thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066Selective catalytic reduction [SCR]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/14Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1406Storage means for substances, e.g. tanks or reservoirs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/14Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1446Means for damping of pressure fluctuations in the delivery system, e.g. by puffer volumes or throttling

Definitions

  • the present invention pertains to a container according to the preamble of the independent patent claim.
  • All liquids that have a volume increase at their freezing point may damage an enclosing component, e.g. a container, when the liquid freezes. If the inlet/outlet to the container contains liquid and it freezes, the volume in the container is locked, or if the volume is constant for any other reason, the expansion of the liquid must be managed by the container. Since the expansion occurs in a closed volume, the forces may be very great, as this is more a matter of displacement rather than an increase of pressure. If the walls of the container cannot handle the displacement, the container becomes deformed and may lose its performance or even break.
  • an enclosing component e.g. a container
  • volume expansion of a liquid may take place for other reasons, e.g. upon a temperature increase.
  • US-4883082 pertains to a valve, adapted to be used at different temperatures and which has built in protection against damage at low temperatures.
  • US-3404802 pertains to a container for a frozen material. In the container there is arranged a spring arrangement to absorb volume increases of the material.
  • US-6880578 pertains to a pressure-stable cylinder, comprising a disc and a spring to handle pressure changes in the cylinder.
  • US-2004/0129325 pertains to a compensation arrangement, to compensate for the volume expansion of a medium, especially for a urea-water mixture, in connection with freezing.
  • a spring-loaded piston which is enclosed by bellows is arranged so that it may be displaced in the event of volume changes in the container.
  • the objective of the present invention is to achieve an improved device, which is structurally simple and has a better resistance against chemical impact and ageing, and which functions within a broad temperature interval.
  • the above-mentioned objectives are achieved with the invention as defined by the independent patent claim.
  • the preferred embodiments are defined by the dependent patent claims.
  • the invention allows the container, when there is a risk of excessive pressure, to obtain a somewhat larger volume, lowering the pressure and reducing the risk of damaging the container. Thus the risk of a housed medium leaking and causing damage or harm to the environment is also reduced.
  • the expansion element consists, according to one embodiment, of a metal plate (tinplate) with a double-curved shape. It is placed so that a convex surface faces the medium, the expansion of which should be handled.
  • the shape on the surface is designed to resist normal working pressure for the container, wherein the element is arranged inside a wall, without being buckled outwards (assuming a concave shape).
  • the tinplate changes shape from convex to concave.
  • the volume difference between the convex and the concave shape means that the liquid may expand without damaging the container or the surrounding structure.
  • the expansion element When the pressure falls, the expansion element resumes its original convex shape and may again resist a normal working pressure.
  • expansion elements may be used in one and the same container to ensure that the expansion volume is sufficient and/or because the placement of the expansion volume so requires.
  • the expansion element is a robust and cheap unit which is easy to fit. Since it is manufactured in one piece made of the same material, e.g. metal, this provides advantages in relation to the prior art devices which require e.g. rubber in order to be waterproof, having regard to temperature sensitivity (may tolerate both high and low temperatures), chemical resistance to surrounding media and ageing.
  • a container 2 is adapted to contain a liquid or gaseous medium 4, comprising a wall 6 which defines a space for the medium.
  • a schematic illustration of the container is displayed, having a rectangular shaped cross-section.
  • the container may have any shape, e.g. rounded shapes, more complex structures and combinations of different shapes.
  • the container 2 comprises at least one expansion element 8 arranged in the wall 6, being adapted to handle the volume expansion of said medium 4.
  • the wall 6 is preferably manufactured of a relatively form-stable material, e.g. metal or plastic.
  • the expansion element 8 has a substantially flat design with an extent which substantially coincides with the extent of the wall 6.
  • the expansion element 8 is resilient and is adapted to be placed in one of two states (end positions):
  • a second state is the stat in which the expansion element 8 has a concave three-dimensional shape 12 (see Figure 3 ) facing the inside of the container 2.
  • P T a pressure which is equal to or exceeds the threshold value P T
  • the expansion element 8 will snap directly from the first state into the second state, and remain in the second state as long as the pressure exceeds the threshold value P T .
  • the expansion element 8 will return to the first state with a snap.
  • An opening 7 is also indicated in the figures, connecting the space defined by the container with the surrounding environment, the opening 7 being e.g. connected to a pipe or a tube for supply and removal of medium in the container.
  • the threshold value P T is suitably selected so that it corresponds to a temperature of the medium when it transitions from a liquid to a solid state.
  • Figure 1 shows the container 2, when there is no medium inside it and the expansion element 8 is in the first state.
  • Figure 2 shows the container 2, when it is filled with a medium, e.g. a liquid which may enter into and exit from the container via the opening 7, which is indicated with a bidirectional arrow.
  • a medium e.g. a liquid which may enter into and exit from the container via the opening 7, which is indicated with a bidirectional arrow.
  • the threshold value P T is selected so that, at the pressure which the medium exhibits at normal usage of the medium, the expansion element 8 will be in the first state.
  • the threshold value P T is within the interval 5-10 bar.
  • Another effect is that one may obtain a clear indication of the pressure inside the container exceeding the threshold value, by the expansion element 8 curving outward.
  • the expansion element may easily be identified by painting, or otherwise arranging a suitable indication on the outside, in a different colour in relation to the container's colour.
  • the expansion element 8 is manufactured of metal, e.g. steel, and preferably consists of a flat, disc-shaped metal plate. As shown in the figures, the expansion element has a shape which is space-efficient and structurally simple, which means that very little space outside the container is required. Other materials may also be used, as long as they meet the requirements of being able to transition into two states, as described above. Examples of materials include different plastics, carbon fibre, etc.
  • the expansion element 8 is secured in a hole in the wall of the container, in such a way that the container is completely sealed.
  • the attachment is made, for example, with a laser-welded joint, a solder joint, a glued joint or clamps.
  • Figures 4-6 show different designs of the expansion element 8 arranged at the container 2.
  • the expansion element 8 may have a circular shape (see Figure 4 ) or an elliptical shape (see Figure 5 ) in the plane for the container's wall, where the element is arranged.
  • the shape may also be rectangular with rounded corners (see Figure 6 ). Influencing the choice of the shape is the need for the material in the expansion element to be able to handle the forces arising in e.g. corners, when the expansion element transitions from the first state to the second state.
  • the container comprises several expansion elements 8.
  • One example illustrating this embodiment is displayed in Figure 7 , where four elements are arranged.
  • the reason for arranging several elements is to be able to handle a larger volume expansion.
  • the expansion element may be arranged on its mantle surface as well as on its end surfaces.
  • the container may normally only be partly filled with a liquid medium.
  • the expansion elements should primarily be arranged in that part of the container, which is filled with medium.
  • the container may be designed to contain volumes exceeding several litres, but it may also be adapted to contain a volume in the range of less than 10 ml, preferably one or a couple of ml. Depending on the volume changes that are to be handled, different sizes of the expansion element may be used.
  • the container 2 is designed to be comprised as a part of a exhaust purification system for a combustion engine.
  • the container thereby constitutes part of a dosage equipment for urea (e.g. AdBlue®), which is used in combustion engines in vehicles to reduce the amount of nitrogen oxides in the exhaust flow.
  • AdBlue® a dosage equipment for urea
  • the expansion element ensures that the container does not risk to be damaged, should the contents transition from a liquid to a solid form in connection with a temperature reduction below the freezing point.
  • the container constitutes an expansion tank inside a liquid-based cooling system for a combustion engine, wherein similarly there is a risk that the container may be damaged if the coolant freezes into a solid form.
  • the container consists of a container for flushing fluid, for cleaning the windscreens and headlights in a vehicle, wherein a sufficient amount of anti-freezing additive is not added to the flushing fluid, which in an analogous way risks freezing into ice at low temperatures.
  • the expansion element is described above as tinplate that directly assumes its two states by a snap-like transition. Obviously this transition may in other embodiments occur successively and more slowly.
  • the container housed a liquid, which in connection with freezing/thawing has caused a volume increase and a pressure increase connected therewith.
  • the container may contain another medium, such as a gas, which for some reason is subjected to a pressure increase without any phase transformation occurring.
  • the expansion element ensures that the pressure may be reduced without the container being damaged by the high pressure, and without the risk of the medium leaking into the environment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP14154597.0A 2013-02-28 2014-02-11 Behälter mit Expansionselement Withdrawn EP2772451A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1350234A SE1350234A1 (sv) 2013-02-28 2013-02-28 Behållare med expansionselement

Publications (1)

Publication Number Publication Date
EP2772451A1 true EP2772451A1 (de) 2014-09-03

Family

ID=50112727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14154597.0A Withdrawn EP2772451A1 (de) 2013-02-28 2014-02-11 Behälter mit Expansionselement

Country Status (2)

Country Link
EP (1) EP2772451A1 (de)
SE (1) SE1350234A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220333A1 (de) * 2014-10-07 2016-04-07 Röchling Automotive SE & Co. KG Flüssigkeitsbehälter, insbesondere Harnstofflösungsbehälter, für ein Fahrzeug

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610342A (en) * 1946-01-30 1948-10-14 Gen Electric Co Ltd Improvements in or relating to hermetically sealed containers
US3404802A (en) 1966-07-13 1968-10-08 Lab O Matic Corp Container for material being frozen
FR2187617A1 (de) * 1972-06-14 1974-01-18 Saint Gobain Carnaud
US4883082A (en) 1988-05-16 1989-11-28 Pirkle Fred L Temperature-responsive valve
WO2000058175A1 (en) * 1999-03-29 2000-10-05 Schmalbach-Lubeca Ag Pasteurization panels for a plastic container
DE10059549A1 (de) * 2000-11-30 2002-06-13 Man Nutzfahrzeuge Ag Behälter zur Bevorratung von gefriergefährdeten Flüssigkeiten
US20040129325A1 (en) 2002-10-25 2004-07-08 Hydraulik-Ring Gmbh Compensation Device for Compensating Volumetric Expansion of Media, Especially of a Urea-Water Solution During Freezing
US6880578B2 (en) 2003-03-11 2005-04-19 Mao Chang Lin Pressure-stable cylinder
WO2007088212A1 (en) * 2006-02-03 2007-08-09 Impress Metal Packaging S.A. Expandable container having lid for providing headspace control of a food can
DE102010045509A1 (de) * 2010-09-15 2012-03-15 Emitec Gesellschaft Für Emissionstechnologie Mbh Einspritzvorrichtung zur Einspritzung eines Reduktionsmittels in eine Abgasbehandlungsvorrichtung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610342A (en) * 1946-01-30 1948-10-14 Gen Electric Co Ltd Improvements in or relating to hermetically sealed containers
US3404802A (en) 1966-07-13 1968-10-08 Lab O Matic Corp Container for material being frozen
FR2187617A1 (de) * 1972-06-14 1974-01-18 Saint Gobain Carnaud
US4883082A (en) 1988-05-16 1989-11-28 Pirkle Fred L Temperature-responsive valve
WO2000058175A1 (en) * 1999-03-29 2000-10-05 Schmalbach-Lubeca Ag Pasteurization panels for a plastic container
DE10059549A1 (de) * 2000-11-30 2002-06-13 Man Nutzfahrzeuge Ag Behälter zur Bevorratung von gefriergefährdeten Flüssigkeiten
US20040129325A1 (en) 2002-10-25 2004-07-08 Hydraulik-Ring Gmbh Compensation Device for Compensating Volumetric Expansion of Media, Especially of a Urea-Water Solution During Freezing
US6880578B2 (en) 2003-03-11 2005-04-19 Mao Chang Lin Pressure-stable cylinder
WO2007088212A1 (en) * 2006-02-03 2007-08-09 Impress Metal Packaging S.A. Expandable container having lid for providing headspace control of a food can
DE102010045509A1 (de) * 2010-09-15 2012-03-15 Emitec Gesellschaft Für Emissionstechnologie Mbh Einspritzvorrichtung zur Einspritzung eines Reduktionsmittels in eine Abgasbehandlungsvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220333A1 (de) * 2014-10-07 2016-04-07 Röchling Automotive SE & Co. KG Flüssigkeitsbehälter, insbesondere Harnstofflösungsbehälter, für ein Fahrzeug
US20160096140A1 (en) * 2014-10-07 2016-04-07 Röchling Automotive SE & Co. KG Liquid container, especially a urea solution container, for a motor vehicle
US10641151B2 (en) * 2014-10-07 2020-05-05 Röchling Automotive SE & Co. KG Liquid container, especially a urea solution container, for a motor vehicle

Also Published As

Publication number Publication date
SE1350234A1 (sv) 2014-08-29

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RIC1 Information provided on ipc code assigned before grant

Ipc: F01N 3/20 20060101ALI20140812BHEP

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RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRANDT, FREDRIK

Inventor name: NORDENHOEK, ROBERT

Inventor name: LARSSON, MARCUS

Inventor name: SANDSTROEM, OLA

Inventor name: MACKALDENER, MAGNUS

Inventor name: SWARTLING, FREDRIK

Inventor name: REINMANN, RAYMOND

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