EP2048444A2 - Procédé de nettoyage d'un système comprenant un réservoir et un chauffe-eau instantané et système - Google Patents
Procédé de nettoyage d'un système comprenant un réservoir et un chauffe-eau instantané et système Download PDFInfo
- Publication number
- EP2048444A2 EP2048444A2 EP08017435A EP08017435A EP2048444A2 EP 2048444 A2 EP2048444 A2 EP 2048444A2 EP 08017435 A EP08017435 A EP 08017435A EP 08017435 A EP08017435 A EP 08017435A EP 2048444 A2 EP2048444 A2 EP 2048444A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- water heater
- cleaning
- liquid
- steam
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
- F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/288—Instantaneous electrical steam generators built-up from heat-exchange elements arranged within a confined chamber having heat-retaining walls
Definitions
- the invention relates to a method for cleaning a system consisting of a tank and a water heater, and a system for carrying out the method.
- Such a method and a system for carrying out the method is known for example from WO 02/068876 A1 already known.
- the known system consists of a designed as a quenching tank for storing water and a trained as a steam generator water heater for generating water vapor for a treatment room of a cooking appliance designed as a household appliance.
- the tank and the flow heater are fluidly connected to each other at both the steam-side and the water-side end of the water heater, wherein the fluid-conducting connection occupies a higher position at the steam-side end in the operating position of the system than at the water-side end.
- the water heater is first overstepped in the known method with water gradually as a cleaning liquid, so that hot water from the water heater passes through the treatment room in the tank.
- the water is then circulated by a pump.
- the soiled cleaning fluid is discharged from the system after a certain cleaning time via a cooking appliance drain.
- the system is refilled with water and the o.g. Process is repeated. Possibly. follow even more cleaning cycles.
- a rinse with a rinse aid-water mixture The mixture is also discharged from the system at the end of the rinsing process via the cooking appliance.
- a steam generator which has at its steam-side end a mist eliminator in the steam line in the form of a cyclone.
- the water collected in the mist eliminator is returned to the boiler interior via a pumped water return.
- the steam generator also has a boiler room associated with the collection space for deposits.
- the deposits can be removed by means of a pump.
- the invention thus presents the problem of providing a method for cleaning a system and a system in which the structural design is simplified.
- the achievable with the present invention consist in particular in a simpler structural design of the system.
- the required for the known from the prior art forced circulation pump is not required by the method according to the invention.
- the production costs are reduced.
- the reliability is increased.
- the system requires less space and can therefore also be used in compact household appliances.
- the desired temperature for the liquid in the system remains unchanged throughout the process.
- the desired temperature of the liquid before filling the tank with the rinsing liquid from the target temperature after filling the tank with rinsing liquid is different.
- the temperature of the liquid during the cleaning process can be better adapted to the different circulating liquids.
- the method can be started depending on very different parameters, such as manually, at specific times, on certain days or the like.
- the method is started as a function of a start temperature measured on the instantaneous water heater or as a function of the operating time or the turn-on frequency of the instantaneous water heater. In this way, an on-demand cleaning of the system is possible. Unnecessary cleaning and rinsing operations are avoided.
- the system according to the invention consists of a tank for storing water and a water heater for generating steam for a treatment room of a household appliance, wherein the tank and the water heater are fluidly connected to each other both at the steam side and at the water-side end of the water heater and the fluid-conducting Connection at the steam-side end in the operating position of System occupies a higher position than at the water-side end.
- the system can be selected according to type, arrangement and material within wide suitable limits.
- the tank for the separation of droplets from the steam generated on a droplet which is formed as an integral part of the tank. For example, this would be useful if the cleaning fluid is also at least partially evaporated during the cleaning period.
- the system is thereby also with regard to the normal operation of the household appliance, during which generated from the water stored in the tank in the water heater and steam is discharged into the treatment room of the household appliance, optimized.
- the unwanted entrainment of droplets in the treatment room is effectively avoided.
- the mist eliminator can be selected according to type, arrangement and material within wide suitable limits.
- the droplet separator has a curved deflection section for deflecting the vapor-droplet mixture, which is formed above the connection at the steam-side end.
- the curved deflection section may have a parabolic curved deflection section.
- the number of components and the assembly steps can be reduced by the mist eliminator is formed as an integral part of the tank.
- the tank can be filled in a variety of ways known and suitable to the person skilled in the art. It is advantageous if the tank has an inlet for filling with a liquid and an outlet for discharging excess liquid or vapor, wherein the inlet can be closed in a liquid-tight manner via a shut-off device. This makes it possible to operate the system as a substantially closed system during the cleaning period. Except for the outlet which, for safety reasons, must remain unclosed and can usually be made with a very small clear cross-section, the system is sealed from the environment, allowing for a very low noise level during the cleaning period and also during normal operation of the system is. The noise level can be further reduced if the outlet is also lockable and the system has a safety valve.
- a temperature sensor is arranged on the water heater, which is in signal transmission connection for controlling and / or regulating a method according to one of claims 1 to 4 with an electrical control.
- the temperature of the water heater more precisely the temperature at the contact point of its heating to the flow channel for the liquid to be heated, is an indicator of the degree of contamination of the water heater and thus of the system.
- the electrical control can be designed such that the method according to the invention is started automatically as a function of this temperature, that is to say when a predefined threshold value is exceeded.
- a counter or timer is arranged, which is actuated depending on the operating time or the EinschaltPSuftechnik the water heater to start the inventive method.
- Fig. 1 shows an inventive household appliance, which is designed here as a baking oven.
- the oven is a combination device in which depending on the selected mode or the selected operating program several different types of heating, such as trained as a top and bottom heat radiant heater and saturated steam can be used.
- Other types of heating known to the person skilled in the art, such as microwave radiation, contact heating and other forms of steam, for example superheated steam, are also conceivable as an alternative or in addition to the abovementioned types of heating.
- the oven has a cooking chamber designed as a treatment room 2, which is closed by a door 4.
- the closable by the door 4 opening 6 of the treatment chamber 2 is bounded above, below and laterally by a designed as a rotating part, one-piece frame part 8 of the body 9.
- a control panel 10 is arranged with control and display elements not shown in a known manner.
- a filling device 12 is arranged, from the in Fig. 1 only a nozzle 12.1 is shown with an opening 12.1.1.
- the opening 12.1.1 is here surrounded in the radial direction by a formed as a rubber part elastic buffer portion 12.2, which is attached to the nozzle 12.1.
- the nozzle 12.1 is shown here in the rest position. Even with the door 4 open, the nozzle 12.1 remains here, as shown, in the rest position. Starting from the rest position, the nozzle 12.1 of the user manually in the in Fig. 2 shown filling position are transferred. The rest position and the filling position limit the transfer region of the nozzle 12.1, wherein the nozzle 12.1 rests in the rest position on the elastic buffer portion 12.2 on the frame part 8.
- the nozzle 12.1 is pivotally attached to the body 9 via a bracket 12.3.
- a suction line 20, a pump 22 and a pressure line 24 is connected.
- the suction line 20 is detachably connected in a manner known to those skilled in the art with the nozzle 12.1 in such a way that the pivoting of the nozzle 12.1 in the holder 12.3 is made possible.
- the pressure line 24 is further connected to the system 26. In the system 26 is generated from the here via the opening 12.1.1 of the nozzle 12.1 into the oven operating liquid, namely water, in normal operation of the household appliance saturated steam, which then via a steam line 28 and a in Fig. 2 shown steam opening 30 is fed into the cooking chamber 2 if necessary.
- the user If the user has selected a mode or a program on the control panel 10, in which a predetermined amount of steam and water is needed, the user is asked about the display element not shown in detail of the control panel 10 to open the door 4 and with a To fill water-filled container, not shown, to the nozzle 12.1, that the opening 12.1.1 of the nozzle 12.1 is below the water level.
- the user pivots the nozzle 12.1 for this purpose of the in Fig. 1 illustrated rest position in the in Fig. 2 shown filling position and placed the container accordingly.
- a likewise not shown control element of the control panel 10 for example, a key press, the user triggers the filling process, so filling.
- the pump 22 sucks on the suction line 20 and the nozzle 12.1, the water from the container and conveys it via the pressure line 24 into the system 26. Der User is informed via the display element that the filling process has ended.
- the pump 22 is switched off and the user can solve the flow-conducting connection between the container and the nozzle 12.1 again, so the container in the image plane of Fig.2 distance down from the nozzle 12.1.
- Fig. 2 clearly shows, the approach and removal of the container is facilitated here by the fact that the nozzle 12.1 when transferred to the filling position not only forward from the image plane of Fig. 2 out, but also to the right in the direction of the center of the opening 6 is pivoted.
- the nozzle 12.1 is thus in the filling position in front of the opening 6.
- the user can pivot the nozzle 12.1 back from the filling position back to the rest position.
- this return transfer takes place automatically after completion of the filling process by means of a servomotor analogous to the automatic transfer to the filling position.
- this is not mandatory.
- the angle relative to a plane parallel to the sides of the domestic appliance is less than 90 °.
- the nozzle 12.1 is moved in the direction of the center of the opening 6 during the transfer to the filling position. Basically, in the selected arrangement of the nozzle 12.1 a movement in the direction perpendicular to the image plane of Fig. 2 sufficient.
- the system 26 consists of a tank 26.1 and a water heater 26.2, which are fluidly connected to each other via connections 32 at the steam-side end and 34 at the water-side end of the water heater 26.2.
- the tank 26.1 is formed as a plastic part and has an inlet 26.1.1 and an outlet 26.1.2.
- tabs 26.1.3 are formed for attachment of the system 26 to a rear wall 9.1 of the household appliance. See also Fig. 3 ,
- the instantaneous water heater 26.2 here has two laterally arranged electric heaters 26.2.1. Furthermore, between one of the heaters 26.2.1 and the in Fig.
- a temperature sensor 36 arranged to measure the temperature in the contact area between the heaters 26.2.1 and the flow channel 26.2.2 and forwarded to an electrical control 38 of the household appliance for further processing. See also Fig. 2 , The fluid-conducting Connections 24, 28, 32, 34 between the tank 26.1 and the flow heater 26.2 and the system 26 and the treatment chamber 2 and the pump 22 are sealed in a manner known to those skilled in the art.
- the method of cleaning the system 26 is automatically started in response to the output signal of the temperature sensor 36 relayed to the electric controller 38.
- the flow channel calcifies 26.2.2 during normal operation, which increases the heat transfer resistance between the heaters 26.2.1 and the liquid flowed through the interior of the flow channel 26.2.2. Accordingly, the temperature measured by means of the temperature sensor 36 increases under otherwise identical conditions, ie the same supplied electrical power. While the temperature in a freshly decalcified system 26 here at 125 ° C to 135 ° C, the temperature rises by the increasing calcification to a value of 159 ° C.
- the electrical control 38 is designed here in such a way that the user can only carry out a predetermined number of applications of the domestic appliance, for example of cooking processes, at a temperature of 159 ° C. measured with the temperature sensor 36. Thereafter, a cleaning, namely a descaling, mandatory. The same applies here in the event that the temperature exceeds 160 ° C.
- the household appliance can only be used again in normal operation when the required cleaning, in this case descaling, has been carried out.
- the electrical controller 38 is known in the art with the temperature sensor 36 signal transmission connection and the heaters 26.2.1 of the water heater 26.2 are energized accordingly.
- the user is prompted via the display element of the control panel 10 to fill the system with a predetermined amount of cleaning liquid analogous to the detailed normal operation.
- cleaning liquid analogous to the detailed normal operation.
- dilute citric acid is used as the cleaning fluid here.
- the system 26 is automatically filled with dilute citric acid until the level has reached a level at which the fluid-conducting connection 32 at the steam-side end of the flow heater 26.2 between the tank 26.1 and water heater 26.2 a continuous liquid level is formed which at least the height of Line 40 in Fig. 5 has reached, so that in the system 26, a natural circulation of the cleaning liquid is made possible.
- this is achieved by specifically overfilling the system 26 so that the actual liquid level in the lines 24 and 28 is located.
- the excess cleaning fluid can be on a retracted into the treatment room 2 collecting container, here a fat pan, not shown, derived. The user is informed in good time to insert the drip pan.
- the heaters 26.2.1 are automatically switched on by means of the electric control 38 and the cleaning liquid is heated to a desired temperature of here 70 ° C. This target temperature is then over a temperature control, not shown, at least for a cleaning time of 60 minutes here. kept substantially constant.
- the desired natural circulation ie the in Fig. 5 indicated by arrows 42 circulation of the cleaning liquid in the system 26 without a pump.
- the natural circulation causes a thorough mixing and distribution of the cleaning liquid, so that not only the water heater 26.2 but also the tank 26.1 and the connections 32, 34 are cleaned in the desired manner, here descaled.
- a shut-off device 44 designed as a valve ensures that the system 26 is closed during the cleaning period except for the outlet 26.1.2, which has only a small clear diameter. See also Fig. 3 , In this way, the noise emission during the cleaning period is significantly reduced.
- the electrical controller 38 causes a display to prompt the user to fill the system 26 with a predetermined amount of flushing fluid, here water, in the manner discussed above.
- a predetermined amount of flushing fluid here water
- the natural circulation in the system 26 is continued.
- the cleaning liquid is diluted.
- the resultant cleaning / rinsing agent mixture is discharged from the system 26 via the outlet 26.1.2 onto the drip pan pushed into the treatment space 2.
- the continuous natural circulation also during the aforementioned rinsing process ensures a good mixing of rinsing and cleaning fluid. If the natural circulation were not continued, the majority of the rinse liquid added to the system 26 would flow directly from the inlet 26.1.1 to the outlet 26.1.2, so that either an insufficient rinsing effect is achieved or the rinsing process would have to be repeated unreasonably. It would also be needed a lot of rinse liquid.
- the rinsing process ie the addition of rinsing liquid and the removal of the cleaning / rinsing agent mixture from the system 26, repeated a total of three times in succession.
- the user is alerted by the display to empty the drip pan.
- the system 26 of the present embodiment has the further advantage of a very compact construction.
- the present embodiment offers even more advantages.
- the steam-side end of the water heater 26.2 facing portion 26.1.4 of the tank 26.1 is formed as a parabolic curved deflection section.
- the desired separation of the vapor-droplet mixture generated during the cleaning process and / or during normal operation of the system 26 is possible in a structurally particularly simple manner.
- the integration of the droplet separator formed in the tank 26.1 the production of the system 26 is further simplified and less expensive.
- FIG. 6 shows a further variant of the curved deflection section for the mist eliminator 26.1.4, which is also formed as an integral part of the tank 26.1.
- the curved diverting portion is also located above the connection 32 of the steam-side end.
- the mist eliminator 26.1.4 is formed with an enlarged separation chamber above the steam-side end.
- the enlarged separation chamber has over the previously described embodiment according to FIG. 4 more volume for foam, which can occur during a cleaning process.
- the solution according to the invention is not limited to the illustrated embodiment, but also to other household appliances in which water vapor is used applicable.
- other household appliances in which water vapor is used applicable.
- use in beverage makers, in other cooking appliances such as steamer, stoves or the like, in laundry treatment machines and in dishwashers is conceivable.
- the cleaning tasks and thus also the cleaning and rinsing liquids used can be as different as the domestic appliances.
- a counter or timer in an evaluation circuit of the electrical control is to be arranged in a manner known to those skilled in the art, for example.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007048567A DE102007048567B4 (de) | 2007-10-09 | 2007-10-09 | Verfahren zur Reinigung eines Systems, bestehend aus einem Tank und einem Durchlauferhitzer, sowie System |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2048444A2 true EP2048444A2 (fr) | 2009-04-15 |
| EP2048444A3 EP2048444A3 (fr) | 2012-02-01 |
| EP2048444B1 EP2048444B1 (fr) | 2016-02-24 |
Family
ID=40193560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08017435.2A Active EP2048444B1 (fr) | 2007-10-09 | 2008-10-04 | Procédé de nettoyage d'un système comprenant un réservoir et un chauffe-eau instantané |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2048444B1 (fr) |
| DE (1) | DE102007048567B4 (fr) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2703729A1 (fr) * | 2012-08-28 | 2014-03-05 | Electrolux Home Products Corporation N.V. | Four de cuisson avec cavité de four et dispositif de nettoyage |
| EP2990727A1 (fr) * | 2014-09-01 | 2016-03-02 | Miele & Cie. KG | Appareil de cuisson |
| EP3112765A1 (fr) * | 2015-06-29 | 2017-01-04 | Whirlpool Corporation | Système de génération de vapeur destiné à être utilisé dans un appareil de cuisson |
| AU2013247086B2 (en) * | 2012-04-11 | 2017-04-20 | Electrolux Home Products Corporation N. V. | Oven for baking food products |
| WO2019185321A1 (fr) * | 2018-03-29 | 2019-10-03 | BSH Hausgeräte GmbH | Appareil ménager de traitement à la vapeur |
| KR20190142092A (ko) * | 2018-06-15 | 2019-12-26 | 엘지전자 주식회사 | 스팀 공급 장치 및 이를 구비한 조리기기 |
| KR20190142084A (ko) * | 2018-06-15 | 2019-12-26 | 엘지전자 주식회사 | 스팀 공급 장치 및 이를 구비한 조리기기 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011054687B4 (de) | 2011-10-21 | 2018-04-05 | Miele & Cie. Kg | Gargerät mit Verdampfungseinrichtung und Verfahren zur Herstellung einer Verdampfungseinrichtung |
| EP2705779B1 (fr) * | 2012-09-10 | 2014-09-03 | Electrolux Home Products Corporation N.V. | Generateur de vapeur pour un appareil de cuisson à vapeur |
| EP4063730B1 (fr) | 2014-01-15 | 2024-04-03 | Electrolux Appliances Aktiebolag | Four à vapeur doté d'un générateur de vapeur en forme de l |
| DE102019125135A1 (de) * | 2019-09-18 | 2020-09-03 | Miele & Cie. Kg | Tank für ein Gargerät und Gargerät |
| IT202200021585A1 (it) * | 2022-10-19 | 2024-04-19 | Smeg Spa | Forno a vapore e metodo di controllo del livello di calcare in un forno a vapore |
| DE102022212145A1 (de) | 2022-11-15 | 2024-05-16 | E.G.O. Elektro-Gerätebau GmbH | Vorrichtung zur Dampferzeugung und Haushaltsgerät mit einer solchen Vorrichtung |
| DE102024106522B3 (de) | 2024-03-07 | 2025-04-30 | Miele & Cie. Kg | Verfahren zur Reinigung eines Beschwadungssystems, Beschwadungssystem für ein Gargerät und Gargerät mit einem Garraum |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10109251C1 (de) | 2001-02-26 | 2002-08-08 | Rational Ag | Dampferzeuger, insbesondere für ein Gargerät |
| WO2002068876A1 (fr) | 2001-02-26 | 2002-09-06 | Rational Ag | Dispositif et procede pour nettoyer un appareil de cuisson |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4034239A1 (de) * | 1990-10-27 | 1992-04-30 | Juno Grosskuechen | Verfahren und vorrichtung zum betreiben eines dampferzeugers fuer gargeraete |
| DE19701090B4 (de) * | 1997-01-15 | 2010-11-11 | Meissner, Werner | Verdampfer-Aggregat für verschmutzte Flüssigkeiten |
| CH691948A5 (de) * | 2000-06-28 | 2001-12-14 | V Zug Ag | Boiler und Dampfgargerät mit einem derartigen Boiler. |
| DE10259829B4 (de) * | 2002-12-19 | 2005-10-06 | Convotherm Elektrogeräte GmbH | Verfahren zum Entkalken von Dampferzeugern für Gargeräte |
-
2007
- 2007-10-09 DE DE102007048567A patent/DE102007048567B4/de active Active
-
2008
- 2008-10-04 EP EP08017435.2A patent/EP2048444B1/fr active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10109251C1 (de) | 2001-02-26 | 2002-08-08 | Rational Ag | Dampferzeuger, insbesondere für ein Gargerät |
| WO2002068876A1 (fr) | 2001-02-26 | 2002-09-06 | Rational Ag | Dispositif et procede pour nettoyer un appareil de cuisson |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2013247086B2 (en) * | 2012-04-11 | 2017-04-20 | Electrolux Home Products Corporation N. V. | Oven for baking food products |
| EP2650615B1 (fr) * | 2012-04-11 | 2018-01-10 | Electrolux Home Products Corporation N.V. | Four pour la cuisson de produits alimentaires |
| EP2703729A1 (fr) * | 2012-08-28 | 2014-03-05 | Electrolux Home Products Corporation N.V. | Four de cuisson avec cavité de four et dispositif de nettoyage |
| WO2014032986A1 (fr) * | 2012-08-28 | 2014-03-06 | Electrolux Home Products Corporation N. V. | Four de cuisson comprenant une cavité de four et un appareil de nettoyage |
| EP2990727A1 (fr) * | 2014-09-01 | 2016-03-02 | Miele & Cie. KG | Appareil de cuisson |
| EP3112765A1 (fr) * | 2015-06-29 | 2017-01-04 | Whirlpool Corporation | Système de génération de vapeur destiné à être utilisé dans un appareil de cuisson |
| US9788679B2 (en) | 2015-06-29 | 2017-10-17 | Whirlpool Corporation | Steam generation system for use in cooking appliance |
| US10206532B2 (en) | 2015-06-29 | 2019-02-19 | Whirlpool Corporation | Steam generation system for use in cooking appliance |
| US10973359B2 (en) | 2015-06-29 | 2021-04-13 | Whirlpool Corporation | Steam generation system for use in cooking appliance |
| WO2019185321A1 (fr) * | 2018-03-29 | 2019-10-03 | BSH Hausgeräte GmbH | Appareil ménager de traitement à la vapeur |
| KR20190142092A (ko) * | 2018-06-15 | 2019-12-26 | 엘지전자 주식회사 | 스팀 공급 장치 및 이를 구비한 조리기기 |
| KR20190142084A (ko) * | 2018-06-15 | 2019-12-26 | 엘지전자 주식회사 | 스팀 공급 장치 및 이를 구비한 조리기기 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2048444A3 (fr) | 2012-02-01 |
| EP2048444B1 (fr) | 2016-02-24 |
| DE102007048567B4 (de) | 2011-11-24 |
| DE102007048567A1 (de) | 2009-04-16 |
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