EP1926548A1 - Process and apparatus for the enrichment of a liquid stream with a gas - Google Patents
Process and apparatus for the enrichment of a liquid stream with a gasInfo
- Publication number
- EP1926548A1 EP1926548A1 EP07730027A EP07730027A EP1926548A1 EP 1926548 A1 EP1926548 A1 EP 1926548A1 EP 07730027 A EP07730027 A EP 07730027A EP 07730027 A EP07730027 A EP 07730027A EP 1926548 A1 EP1926548 A1 EP 1926548A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- pressure
- flow
- liquid
- regulator
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/236—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages
- B01F23/2362—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages for aerating or carbonating within receptacles or tanks, e.g. distribution machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/236—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids specially adapted for aerating or carbonating beverages
- B01F23/2363—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
- B01F23/23762—Carbon dioxide
- B01F23/237621—Carbon dioxide in beverages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/23—Mixing by intersecting jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4523—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through sieves, screens or meshes which obstruct the whole diameter of the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
- B01F35/833—Flow control by valves, e.g. opening intermittently
Definitions
- the present invention relates generally to a method and apparatus for the enrichment of a liquid stream with a gas. It relates in particular to a method and apparatus for the enrichment of a drinking water stream with carbon dioxide.
- a carbonation of a liquid is mentioned, so it is generally meant the enrichment of the liquid with a gas.
- the enrichment of a liquid, in particular water, with gaseous carbon dioxide is to be regarded as a comprehensive special case of the generally understood formulation.
- An apparatus for the enrichment of drinking water with carbon dioxide in the continuous process is e.g. in WO 2004/024306.
- a spill valve in the dispensing line and an additional pressure stabilizer in the continuous mixer itself In the gas supply line, a flow rate valve is further arranged, which is to keep constant the amount of gas fed into the continuous mixer per unit time.
- the control includes a solenoid valve in the water connection and solenoid valve in the gas connection of the continuous mixer. Both solenoids are closed if a pressure switch in the bleed line detects a pressure increase beyond the working pressure. This is a relatively complex control technology whose coordination is also relatively complicated.
- PCT / DE01 / 04128 is generally concerned with a feed component for a tubular continuous mixer with sieve inserts.
- this document also seems to suggest to regulate the feed pressure of the gas in the continuous mixer depending on the water pressure.
- a relatively complicated pressure regulating valve for the gas is presented. In practice, however, has shown that such a regulation of the feed pressure of the gas as a function of the water pressure, with strong water pressure fluctuations or small tap quantities but still does not ensure satisfactory carbonization.
- Object of the present invention is to provide a method for enriching a To provide liquid flow with a gas which avoids the aforementioned problems.
- Another object of the invention is to provide a device for enriching a liquid flow with a gas, which avoids the aforementioned problems.
- the liquid stream is passed through a continuous mixer, the gas is fed into this continuous mixer, so that it mixes with the liquid stream, wherein the feed pressure of the gas is controlled so that the pressure difference between the liquid stream and the gas fed in is substantially constant ,
- the flow rate of the liquid flow is kept constant by a flow rate regulator largely independent of fluctuations in the fluid pressure.
- this device further comprises a downstream flow rate regulator (ie downstream of the continuous mixer) for keeping constant the flow rate of the liquid flow per unit time largely independent of pressure fluctuations in its inlet, ie both in the feed line of the liquid to be enriched with a gas , as well as the output side of the continuous mixer.
- a downstream flow rate regulator ie downstream of the continuous mixer
- the device is particularly suitable for household use. Especially because of its unproblematic operating and maintenance characteristics.
- the result of the gas enrichment can in this case via the differential pressure between the liquid flow and the injected gas and / or the flow rate of the liquid flow and / or the properties of the continuous mixer, in particular the variation of the gap width in a flow mixer described below with nozzle chamber (eg according to the teaching of WO 2004/024306 Al) are influenced or firmly regulated.
- the invention thus relates to a method for enriching a liquid with a gas, wherein the degree of enrichment is variable.
- a preferred flow rate regulator comprises a throttle body arranged in a flow area of the flow rate regulator such that it reduces the flow area if the pressure in the liquid flowing therethrough increases and increases as the pressure in the liquid flowing through it decreases.
- Such a flow regulator does not need separate sensors and power supply. It can easily be installed in a tap pipe or a tap.
- a fixed or adjustable flow regulator can be used. With an adjustable flow regulator, it is also possible to influence the gas enrichment result by adjusting the flow rate.
- the result of the gas enrichment ie the degree of carbonation
- the degree of carbonation also via an adjustability of the differential pressure between the liquid flow and the injected gas and / or the properties of the continuous mixer, in particular the variation of the gap width in a flow mixer with nozzle chamber described below (For example, according to the teaching of WO 2004/024 306 Al) can be influenced.
- This is particularly advantageous over prior known prior art carbonators in which variation of the degree of carbonation is achieved by simply mixing non-carbonated water with carbonated water in a variable mixing ratio. This is usually done by using a controller with solenoid valves, depending on the setting of the carbon dioxide different amounts of still water from a parallel line to the carbonated water in the outlet can get.
- the throttle body of the flow regulator is an elastically deformable body which is deformable by the pressure acting on it.
- the throttle body is an O-ring which is arranged in the passage to a central control body with longitudinal grooves such that it is deformable by the pressure difference between the water inlet side and water outlet side and pressed into the longitudinal grooves of the control body.
- a preferred embodiment of the continuous mixer comprises a nozzle body and an adjoining mixing chamber.
- the nozzle body has a nozzle ring gap and a gas injection nozzle arranged centrally with respect to the nozzle ring gap, wherein the connection for the liquid flow with the nozzle ring gap and the connection for the gas is connected to the gas injection nozzle.
- the width of the nozzle ring gap is advantageously selectable or adjustable, so that one can influence the pressure of the liquid flow in the mixing chamber and thus the degree of carbonation by choosing or adjusting the nozzle ring gap.
- this has a constant nozzle ring gap.
- the degree of carbonation may then be e.g. via a variable flow rate regulator - as mentioned above - be varied.
- a continuous mixer with a constant nozzle ring gap can be advantageously produced in plastic injection molding technology and thus allows the realization of relevant cost advantages.
- variable flow rate regulator which can also be produced in plastic injection molding technology, infinitely adjustable carbonization results can be achieved at the lowest cost price.
- the differential pressure valve disposed in the inlet of the continuous mixer i. the gas pressure regulator for regulating the gas pressure as a function of the liquid pressure, be created in plastic injection molding technology, which leads to a further reduction of production costs.
- liquid or gas-carrying lines can be made completely or partially of plastic, especially in plastic injection molding technology can be created.
- any combination of fixed / variable differential pressure regulators, continuous mixers, chokes, and / or flow rate controllers may also be used.
- the gas pressure can generally be both above and below the pressure of the liquid, depending on the continuous mixer used.
- the use of a continuous mixer according to the teaching of WO 2004/024 306 Al allows the setting of a gas pressure which is also below the pressure of the liquid. In this case, a particularly efficient gas enrichment with the smallest bubble formation can be achieved.
- a device according to the invention is particularly suitable for the carbonation of drinking water.
- the connection for the liquid flow is then normally connected to a drinking water line or to a storage tank and a downstream booster pump.
- the connection for the gas is connected via the differential pressure regulator with a carbon dioxide bottle and the dispensing connection via the flow regulator with a nozzle.
- FIG. 1 shows a simplified circuit diagram of a device according to the invention for the enrichment of a liquid flow with a gas.
- the apparatus 10 shown in FIG. 1 has been developed in particular for the carbonation of drinking water in a continuous process at the end consumer or in restaurants. It comprises a water-side connection 12, a gas-side connection 14 and a dispensing connection 16.
- the water-side connection 12 is connected to a drinking water line 18 via a drinking water filter 12, a backflow preventer 14 and a shut-off valve 16.
- the gas-side connection 14 is connected via a shut-off valve 20 to a carbon dioxide container 22. closed, wherein the reference numeral 24 denotes a gas-side safety valve.
- the dispensing connection 16 is equipped with a tap 26.
- the actual carbonization, i. Enrichment of the drinking water with carbon dioxide is preferably carried out in a tubular continuous mixer 28 with a nozzle head 30, a mixing chamber 32 and a settling chamber 34.
- the nozzle head 30 is advantageously designed as described in WO 2004/024 306 A1. Accordingly, it comprises a nozzle ring gap 36, which communicates with the water-side connection 12 via a water supply line 38, and gas injection nozzle 40, which is arranged in a central core 41 and communicates with the gas-side connection 14 via a gas supply line 42.
- the width of the nozzle ring gap 36 can be adjusted advantageously, in the mixing chamber 32, the centrally injected gas mixes extremely efficiently with the surrounding water flow to a water-gas mixture.
- micro-sieves 44 This mixture then advantageously flows via micro-sieves 44 into the settling chamber 34.
- the micro-sieves 44 ensure a more homogeneous bubble formation in the liquid stream.
- the size of the gas bubbles in the water flow can also be controlled via the mesh size of the micro-sieves 44.
- the embodiment of the continuous mixer 20 shown in FIG. 1 has no pressure stabilizer at the outlet of the settling chamber 34. Rather, the gas-water mixture opens via a discharge opening 46 of the settling chamber 34 directly to a bleed line 48.
- a pressure control valve 50 and a backflow preventer 52 are arranged in the gas supply line 42.
- the pressure control valve 50 regulates the pressure difference between the gas in the gas supply line 42 and the water in the water supply line 38 to a constant setpoint, which may be zero in particular.
- an actuator 54 actuator or diaphragm of the pressure regulating valve 50 is acted upon by the water pressure in the water supply line 38 and the gas pressure in the gas supply line 42. If the difference between the gas and water pressure exceeds a predetermined setpoint, the gas flow in the gas supply line 42 is throttled via a gas valve 56 connected to the actuator 54. If the difference between gas and water pressure falls below the predetermined setpoint value, then the gas valve 56 becomes opened again accordingly.
- a constant desired value for the pressure difference can be predefined via a spring means 58, for example.
- a spring means 58 By selecting the bias of the spring means 58, one can adjust the predetermined setpoint for the pressure difference; wherein, depending on the arrangement of the spring means 58, the gas pressure may be higher or lower than the water pressure.
- a special case in this case is a pressure regulator with a pressure regulating piston which has a C 1 transformation ratio of 1: 1 and no spring means for prescribing a pressure difference.
- a pressure regulator then ensures that the gas pressure in the gas supply line 42 is approximately equal to the water pressure in the water supply line 38.
- a backflow preventer is shown, which ensures that no water penetrates into the gas supply line 42, for example, if the gas pressure in the gas supply line 42 falls below the water pressure in the flow mixer 28.
- the latter is the case, for example, if the gas container is largely empty.
- the puncture of the backflow preventer 52 can also be integrated with the pressure control valve 50. The latter also applies to the safety function of the safety valve 24 described above.
- a simple flow rate regulator 60 is arranged, the flow rate of the drinking water flow in the dispensing line largely independent of pressure fluctuations, e.g. keeps constant in the fresh water supply.
- Such simple flow rate regulators are based, for example, on the functional principle that an O-ring is arranged around a central regulating body with longitudinal grooves in a through-passage in such a way that it is deformed by the pressure difference between the water inlet side and the water outlet side and into the longitudinal groove. len of the control body is pressed. With increasing flow pressure (ie increasing flow or liter volume), the O-ring thus reduces the free flow cross-section of the longitudinal grooves in the central control body. With decreasing flow pressure (ie decreasing flow or liter amount), the O-ring returns to its original shape, whereby the free flow cross-section of the longitudinal grooves increases again.
- Such "water saver inserts” are not only extremely inexpensive, but also long-term proven as standard inserts in sanitary fittings.In addition, these inserts can be very easily installed in the tap line 48 or the nozzle 26.
- adjustable flow regulator central control body with the longitudinal grooves, for example conical and adjustable relative to the O-ring.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Accessories For Mixers (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU91249A LU91249B1 (en) | 2006-06-09 | 2006-06-09 | Method and device for enriching a liquid with a gas |
PCT/EP2007/055673 WO2007141339A1 (en) | 2006-06-09 | 2007-06-08 | Process and apparatus for the enrichment of a liquid stream with a gas |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1926548A1 true EP1926548A1 (en) | 2008-06-04 |
EP1926548B1 EP1926548B1 (en) | 2010-02-17 |
Family
ID=37655523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07730027A Not-in-force EP1926548B1 (en) | 2006-06-09 | 2007-06-08 | Process and apparatus for the enrichment of a liquid stream with a gas |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1926548B1 (en) |
AT (1) | ATE457825T1 (en) |
DE (1) | DE502007002849D1 (en) |
LU (1) | LU91249B1 (en) |
WO (1) | WO2007141339A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202012101021U1 (en) | 2012-03-22 | 2013-06-26 | Biologic Gmbh | Device for the enrichment of a liquid flow with a gas |
DE102012102467A1 (en) | 2012-03-22 | 2013-09-26 | Biologic Gmbh | Device for enriching drinking water stream with carbon dioxide, for use in e.g. house, has control valve that adjusts differential pressure between gas and liquid stream, and gas pipe that supplies gas stream to liquid stream in mixer |
WO2018065253A1 (en) | 2016-10-06 | 2018-04-12 | Biologic Gmbh | Method for drawing a carbonated drink, dispenser system for carbonated drinks, and a cartridge unit for same |
DE102018009440A1 (en) | 2018-12-01 | 2020-06-04 | Dinger Werkzeugbau Gmbh | Device for enriching a liquid flow with a gas |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007039472A1 (en) | 2007-08-21 | 2009-02-26 | Biologic Gmbh | Apparatus and method for the intermittent impregnation and dispensing of drinking water |
US8771520B2 (en) | 2008-05-31 | 2014-07-08 | Vws Westgarth Limited | Fluid treatment apparatus |
ATE493196T1 (en) * | 2008-11-25 | 2011-01-15 | Yang Jo Lan | EMULSIFIER SYSTEM |
FR2949355B1 (en) * | 2009-09-03 | 2011-09-09 | Georges Ollier | INSTALLATION FOR PRODUCING A HOMOGENEOUS GAS MIXTURE FROM LIQUID AND GASEOUS CONSTITUENTS |
DE102011001252A1 (en) | 2011-03-14 | 2012-09-20 | Biologic Gmbh | A process for the portionwise preparation of water-based direct mixed carbonated postmix beverages, beverage capsule and a home appliance for the portionwise carbonation and flavoring of water |
DE102011123025B3 (en) | 2011-03-14 | 2021-08-12 | Gerrit Sonnenrein | Household appliance for portion-wise carbonation and flavoring of water and process for the portion-wise production of water-based carbonated postmix beverages for direct consumption |
DE102012100844A1 (en) * | 2012-02-01 | 2013-08-01 | Apollo Produkt- und Vertriebsgesellschaft mbH | Carbonating device for wine and wine-based drinks |
DE102016120651A1 (en) | 2016-10-28 | 2018-05-03 | Bernhard Schultes | Device for dispensing and / or producing drinks |
DE102016120652A1 (en) | 2016-10-28 | 2018-05-03 | Bernhard Schultes | Device for dispensing and / or producing drinks |
EP3512388B1 (en) | 2016-10-28 | 2020-01-22 | Bernhard Schultes | Appliance for dispensing and/or preparing beverages |
DE102016120653A1 (en) | 2016-10-28 | 2018-05-03 | Bernhard Schultes | Method for operating a device and device for dispensing and / or producing beverages |
DE102016120654A1 (en) | 2016-10-28 | 2018-05-03 | Bernhard Schultes | Device for dispensing and / or producing drinks |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1220290A (en) * | 1967-08-29 | 1971-01-27 | Automatic Sprinkler Corp | Carbonating system and apparatus |
AU575379B2 (en) * | 1984-03-12 | 1988-07-28 | Figgie International Inc. | Liquid proportioner |
GB2261383A (en) * | 1991-11-14 | 1993-05-19 | Calor Gas Ltd | Carbonator systems |
JPH1015565A (en) * | 1996-07-01 | 1998-01-20 | Mitsubishi Rayon Co Ltd | Apparatus for making carbond dioxide added water |
DE10240667B4 (en) * | 2002-09-04 | 2004-12-09 | Uwe Sonnenrein | Device for the enrichment of gas or gas mixtures in drinkable water and method for the enrichment of gas or gas mixtures in drinkable water |
DE102005019410A1 (en) * | 2005-04-25 | 2006-10-26 | Margret Spiegel | Assembly to create carbonated drinking water from tap water and carbon dioxide in reactor packed with polycarbonate grains |
-
2006
- 2006-06-09 LU LU91249A patent/LU91249B1/en active
-
2007
- 2007-06-08 DE DE502007002849T patent/DE502007002849D1/en active Active
- 2007-06-08 WO PCT/EP2007/055673 patent/WO2007141339A1/en active Application Filing
- 2007-06-08 AT AT07730027T patent/ATE457825T1/en active
- 2007-06-08 EP EP07730027A patent/EP1926548B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2007141339A1 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202012101021U1 (en) | 2012-03-22 | 2013-06-26 | Biologic Gmbh | Device for the enrichment of a liquid flow with a gas |
DE102012102467A1 (en) | 2012-03-22 | 2013-09-26 | Biologic Gmbh | Device for enriching drinking water stream with carbon dioxide, for use in e.g. house, has control valve that adjusts differential pressure between gas and liquid stream, and gas pipe that supplies gas stream to liquid stream in mixer |
WO2018065253A1 (en) | 2016-10-06 | 2018-04-12 | Biologic Gmbh | Method for drawing a carbonated drink, dispenser system for carbonated drinks, and a cartridge unit for same |
DE102016119010A1 (en) | 2016-10-06 | 2018-04-12 | Biologic Gmbh | Method of tapping a carbonated beverage, carbonated beverage dispenser and cartridge unit therefor |
DE102018009440A1 (en) | 2018-12-01 | 2020-06-04 | Dinger Werkzeugbau Gmbh | Device for enriching a liquid flow with a gas |
Also Published As
Publication number | Publication date |
---|---|
WO2007141339A1 (en) | 2007-12-13 |
ATE457825T1 (en) | 2010-03-15 |
LU91249B1 (en) | 2007-12-10 |
DE502007002849D1 (en) | 2010-04-01 |
EP1926548B1 (en) | 2010-02-17 |
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