EP2048444A2 - Method for cleaning a system, composed of a tank and a percolator as well as system - Google Patents
Method for cleaning a system, composed of a tank and a percolator as well as system 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 48
- 238000000926 separation method Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 9
- 239000008237 rinsing water Substances 0.000 abstract 1
- 238000010411 cooking Methods 0.000 description 7
- 239000003595 mist Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005429 filling process Methods 0.000 description 3
- 230000002308 calcification Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGESĀ ; 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 Ā°.
- 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 Ā° C to 135 Ā° C, the temperature rises by the increasing calcification to a value of 159 Ā° 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 Ā° 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 Ā° 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 Ā° 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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- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
Die Erfindung betrifft ein Verfahren zur Reinigung eines Systems, bestehend aus einem Tank und einem Durchlauferhitzer, sowie ein System zur DurchfĆ¼hrung des Verfahrens.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.
Ein derartiges Verfahren und ein System zur DurchfĆ¼hrung des Verfahrens ist beispielsweise aus der
Zur Reinigung des Systems wird der Durchlauferhitzer bei dem bekannten Verfahren zuerst stufenweise mit Wasser als ReinigungsflĆ¼ssigkeit Ć¼berfĆ¼llt, so dass heiĆes Wasser aus dem Durchlauferhitzer Ć¼ber den Behandlungsraum in den Tank gelangt. Das Wasser wird anschlieĆend durch eine Pumpe umgewƤlzt. Die verschmutzte ReinigungsflĆ¼ssigkeit wird nach einer bestimmten Reinigungsdauer Ć¼ber einen GargerƤteablauf aus dem System ausgeschleust. Danach wird das System erneut mit Wasser befĆ¼llt und der o.g. Vorgang wiederholt sich. Evtl. folgen noch weitere Reinigungszyklen. Zum Schluss erfolgt ein SpĆ¼lvorgang mit einem KlarspĆ¼ler-Wasser-Gemisch. Das Gemisch wird am Ende des SpĆ¼lvorgangs ebenfalls Ć¼ber den GargerƤteablauf aus dem System ausgeschleust.To purify the system, 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. Thereafter, the system is refilled with water and the o.g. Process is repeated. Possibly. Follow even more cleaning cycles. Finally, 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.
Aus der
Das in dem Tropfenabscheider gesammelte Wasser wird Ć¼ber eine WasserrĆ¼ckfĆ¼hrung mit Pumpe in den Kesselinnenraum zurĆ¼ckgefĆ¼hrt.From the
The water collected in the mist eliminator is returned to the boiler interior via a pumped water return.
Der Dampferzeuger weist auĆerdem einen dem Kesselinnenraum zugeordneten Sammelraum fĆ¼r Ablagerungen auf. In einem Reinigungsvorgang kƶnnen die Ablagerungen mittels Pumpe abgefĆ¼hrt werden.The steam generator also has a boiler room associated with the collection space for deposits. In a cleaning process, the deposits can be removed by means of a pump.
Bei beiden AusfĆ¼hrungen aus dem Stand der Technik sind zusƤtzliche Pumpen fĆ¼r die DurchfĆ¼hrung eines Reinigungsvorganges erforderlich.In both versions of the prior art additional pumps for carrying out a cleaning process are required.
Der Erfindung stellt sich somit das Problem ein Verfahren zur Reinigung eines Systems sowie ein System anzugeben, bei dem der konstruktive Aufbau vereinfacht ist.The invention thus presents the problem of providing a method for cleaning a system and a system in which the structural design is simplified.
ErfindungsgemĆ¤Ć wird dieses Problem durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 sowie ein System mit den Merkmalen des Patentanspruchs 5 gelƶst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden UnteransprĆ¼chen.According to the invention, this problem is solved by a method having the features of patent claim 1 and a system having the features of
Die mit der Erfindung erreichbaren Vorteile bestehen insbesondere in einem einfacheren konstruktiven Aufbau des Systems. Die fĆ¼r den aus dem Stand der Technik bekannten Zwangsumlauf erforderliche Pumpe ist nach dem erfindungsgemƤĆen Verfahren nicht erforderlich. Hierdurch sind zum einen die Herstellkosten gesenkt. Zum anderen ist die Betriebssicherheit erhƶht. Ferner benƶtigt das System weniger Bauraum und ist damit auch bei kompakten HaushaltsgerƤten einsetzbar.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. As a result, on the one hand, the production costs are reduced. On the other hand, the reliability is increased. Furthermore, the system requires less space and can therefore also be used in compact household appliances.
GrundsƤtzlich ist es mƶglich, dass die Soll-Temperatur fĆ¼r die FlĆ¼ssigkeit in dem System wƤhrend des gesamten Verfahrens unverƤndert bleibt. Bei einer verbesserten AusfĆ¼hrungsform ist es jedoch denkbar, dass sich die Soll-Temperatur der FlĆ¼ssigkeit vor dem FĆ¼llen des Tanks mit der SpĆ¼lflĆ¼ssigkeit von der Soll-Temperatur nach dem FĆ¼llen des Tanks mit SpĆ¼lflĆ¼ssigkeit unterscheidet. Hierdurch kann die Temperatur der FlĆ¼ssigkeit wƤhrend des Reinigungsverfahrens besser an die unterschiedlichen zirkulierenden FlĆ¼ssigkeiten angepasst werden.In principle, it is possible that the desired temperature for the liquid in the system remains unchanged throughout the process. In an improved embodiment, however, it is conceivable that 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. As a result, the temperature of the liquid during the cleaning process can be better adapted to the different circulating liquids.
GrundsƤtzlich kann es ausreichend sein, wenn das System nach dem eigentlichen Reinigungsvorgang lediglich einmalig mit SpĆ¼lflĆ¼ssigkeit gespĆ¼lt wird. Bei einer verbesserten AusfĆ¼hrungsform ist es mƶglich, dass das FĆ¼llen des Tanks mit SpĆ¼lflĆ¼ssigkeit und das Ausschleusen des Gemisches aus Reinigungs- und SpĆ¼lflĆ¼ssigkeit mehrmals direkt nacheinander wiederholt werden. Auch ist es denkbar, dass die Anzahl der SpĆ¼lvorgƤnge in AbhƤngigkeit des Verschmutzungsgrades des Systems oder anderer Parameter, wie beispielsweise Betriebsdauer oder EinschalthƤufigkeit des Durchlauferhitzers, erfolgt.In principle, it may be sufficient if the system is rinsed only once with rinsing liquid after the actual cleaning process. In an improved embodiment, it is possible that the filling of the tank with rinsing liquid and the discharge of the mixture of cleaning and rinsing liquid are repeated several times in succession. It is also conceivable that the number of rinsing operations depending on the degree of contamination of the system or other parameters, such as operating time or EinschalthƤufigkeit the water heater, takes place.
GrundsƤtzlich kann das Verfahren in AbhƤngigkeit von voneinander sehr verschiedenen Parametern, wie beispielsweise manuell, zu bestimmten Zeiten, an bestimmten Tagen oder dergleichen, gestartet werden. Vorteilhafterweise wird das Verfahren in AbhƤngigkeit von einer an dem Durchlauferhitzer gemessenen Start-Temperatur oder in AbhƤngigkeit der Betriebsdauer oder der EinschalthƤufigkeit des Durchlauferhitzers gestartet. Auf diese Weise ist eine am tatsƤchlichen Bedarf orientierte Reinigung des Systems ermƶglicht. Unnƶtige Reinigungs- und SpĆ¼lvorgƤnge werden vermieden.In principle, the method can be started depending on very different parameters, such as manually, at specific times, on certain days or the like. Advantageously, 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.
Das erfindungsgemƤĆe System, besteht aus einem Tank zur Bevorratung von Wasser und einem Durchlauferhitzer zur Erzeugung von Wasserdampf fĆ¼r einen Behandlungsraum eines HaushaltsgerƤts, wobei der Tank und der Durchlauferhitzer sowohl an dem dampfseitigen wie auch an dem wasserseitigen Ende des Durchlauferhitzers miteinander fluidleitend verbunden sind und die fluidleitende Verbindung an dem dampfseitigen Ende in der Betriebslage des Systems eine hƶhere Lage als an dem wasserseitigen Ende einnimmt. Ansonsten ist das System nach Art, Anordnung und Material in weiten geeigneten Grenzen wƤhlbar. Vorteilhafterweise weist der Tank zur Abscheidung von Tropfen aus dem erzeugten Dampf einen Tropfenabscheider auf, der als integraler Bestandteil des Tanks ausgebildet ist. Beispielsweise wƤre dies sinnvoll, wenn die ReinigungsflĆ¼ssigkeit wƤhrend der Reinigungsdauer auch zumindest teilweise verdampft wird. Ferner ist das System hierdurch auch im Hinblick auf den Normalbetrieb des HaushaltsgerƤts, wƤhrend dessen aus dem in dem Tank bevorrateten Wasser in dem Durchlauferhitzer Wasserdampf erzeugt und in den Behandlungsraum des HaushaltsgerƤts abgegeben wird, optimiert. Das ungewĆ¼nschte Mitschleppen von Trƶpfchen in den Behandlungsraum ist wirksam vermieden.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. Otherwise, the system can be selected according to type, arrangement and material within wide suitable limits. Advantageously, 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. Furthermore, 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.
GrundsƤtzlich ist der Tropfenabscheider nach Art, Anordnung und Material in weiten geeigneten Grenzen wƤhlbar. Vorteilhafterweise weist der Tropfenabscheider einen gekrĆ¼mmten Umlenkabschnitt zur Umlenkung des Dampf-Tropfen-Gemisches auf, der oberhalb der Verbindung am dampfseitigen Ende ausgebildet ist. Der gekrĆ¼mmte Umlenkabschnitt kann einen parabelfƶrmig gekrĆ¼mmten Umlenkabschnitt aufweisen. Hierdurch ist ein robuster Tropfenabscheider auf konstruktiv einfache Weise realisiert.In principle, the mist eliminator can be selected according to type, arrangement and material within wide suitable limits. Advantageously, 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. As a result, a robust droplet is realized in a structurally simple manner.
Die Anzahl der Bauteile sowie der Montageschritte lƤsst sich verringern, indem der Tropfenabscheider als ein integraler Bestandteil des Tanks ausgebildet ist.The number of components and the assembly steps can be reduced by the mist eliminator is formed as an integral part of the tank.
GrundsƤtzlich kann der Tank auf vielfƤltige dem Fachmann bekannte und geeignete Weise befĆ¼llbar sein. Vorteilhaft ist es, wenn der Tank einen Einlass zum BefĆ¼llen mit einer FlĆ¼ssigkeit und einen Auslass zum Ausschleusen von Ć¼berschĆ¼ssiger FlĆ¼ssigkeit oder Dampf aufweist, wobei der Einlass Ć¼ber eine Absperrvorrichtung flĆ¼ssigkeitsdicht verschlieĆbar ist. Hierdurch ist es mƶglich, das System wƤhrend der Reinigungsdauer als ein im Wesentlichen geschlossenes System zu betreiben. Bis auf den Auslass, der aus SicherheitsgrĆ¼nden unverschlossen bleiben muss und in der Regel mit einem sehr geringen freien Querschnitt ausgefĆ¼hrt werden kann, ist das System von der Umgebung abgeschlossen, so dass ein sehr geringes GerƤuschniveau wƤhrend der Reinigungsdauer und auch wƤhrend des Normalbetriebs des Systems ermƶglicht ist. Das GerƤuschniveau lƤsst sich noch weiter absenken, wenn der Auslass ebenfalls verschlieĆbar ist und das System ein Sicherheitsventil aufweist.In principle, 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.
Eine vorteilhafte Weiterbildung sieht vor, dass an dem Durchlauferhitzer ein Temperatursensor angeordnet ist, der zur Steuerung und/oder Regelung eines Verfahrens gemĆ¤Ć einem der AnsprĆ¼che 1 bis 4 mit einer elektrischen Steuerung in SignalĆ¼bertragungsverbindung steht. Auf diese Weise ist das Verfahren weiter verbessert. Die Temperatur des Durchlauferhitzers, genauer die Temperatur an der Kontaktstelle von dessen Heizung zu dem Strƶmungskanal fĆ¼r die zu erhitzende FlĆ¼ssigkeit, ist ein Indikator fĆ¼r den Verschmutzungsgrad des Durchlauferhitzers und damit des Systems. Durch Verkalkung wƤhrend des Normalbetriebs des Systems wird der WƤrmedurchgangswiderstand erhƶht, so dass die gemessene Temperatur bei ansonsten gleichen Bedingungen, also gleicher zugefĆ¼hrter elektrischer Leistung, ansteigt. Entsprechend kann die elektrische Steuerung derart ausgebildet sein, dass das erfindungsgemƤĆe Verfahren in AbhƤngigkeit dieser Temperatur, also bei Ćberschreiten eines vorher festgelegten Schwellwerts, automatisch gestartet wird. Hierdurch ist eine bedarfgesteuerte Reinigung des Systems ermƶglicht. Ferner ist das Erreichen einer vorher festgelegten Soll-Temperatur der ReinigungsflĆ¼ssigkeit und des Gemisches aus Reinigungs-und SpĆ¼lflĆ¼ssigkeit erforderlich, um den Naturumlauf zu gewƤhrleisten und eine entsprechende Reinigungsleistung zu erreichen. Dies kann entweder durch eine auf der direkten Messung der Temperatur der umgewƤlzten FlĆ¼ssigkeit oder auf einer indirekten Messung basierenden Regelung erfolgen.An advantageous development provides that 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. In this way, the process is further improved. 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. By calcification during normal operation of the Systems, the heat transfer resistance is increased, so that the measured temperature increases under otherwise identical conditions, ie the same supplied electrical power. Accordingly, 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. This allows a demand-controlled cleaning of the system. Furthermore, the achievement of a predetermined target temperature of the cleaning liquid and the mixture of cleaning and rinsing liquid is required to ensure the natural circulation and to achieve a corresponding cleaning performance. This can be done either by a control based on the direct measurement of the temperature of the circulating liquid or on an indirect measurement.
Alternativ oder in ErgƤnzung zu der vorgenannten AusfĆ¼hrungsform ist es mƶglich, dass in einer Auswerteschaltung der elektrischen Steuerung ein ZƤhl- oder Zeitglied angeordnet ist, das in AbhƤngigkeit der Betriebsdauer oder der EinschalthƤufigkeit des Durchlauferhitzers betƤtigbar ist, um das erfindungsgemƤĆe Verfahren zu starten.Alternatively or in addition to the aforementioned embodiment, it is possible that in a evaluation circuit of the electrical control, a counter or timer is arranged, which is actuated depending on the operating time or the EinschalthƤufigkeit the water heater to start the inventive method.
Ein AusfĆ¼hrungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend nƤher beschrieben. Es zeigt
- Figur 1
- ein HaushaltsgerƤt mit einem erfindungsgemƤĆen System in einer perspektivischen Seitenansicht,
Figur 2- das HaushaltsgerƤt aus
Fig. 1 in teilweiser Frontansicht, - Figur 3
- das HaushaltsgerƤt aus
Fig. 1 in teilweiser und perspektivischer RĆ¼ckansicht, Figur 4- das System aus
Fig. 3 in einer vergrƶĆerten Darstellung und Figur 5- das System aus
Fig. 4 in einer Schnittdarstellung, Figur 6- das System mit einer weiteren Variante des gekrĆ¼mmten Umlenkabschnitts fĆ¼r einen Tropfenabscheider.
- FIG. 1
- a domestic appliance with a system according to the invention in a perspective side view,
- FIG. 2
- the household appliance off
Fig. 1 in partial front view, - FIG. 3
- the household appliance off
Fig. 1 in partial and perspective rear view, - FIG. 4
- the system off
Fig. 3 in an enlarged view and - FIG. 5
- the system off
Fig. 4 in a sectional view, - FIG. 6
- the system with a further variant of the curved deflection section for a mist eliminator.
Der Backofen weist einen als Garraum ausgebildeten Behandlungsraum 2 auf, der durch eine TĆ¼r 4 verschlieĆbar ist. Die durch die TĆ¼r 4 verschlieĆbare Ćffnung 6 des Behandlungsraums 2 ist nach oben, unten und seitlich durch ein als umlaufendes Teil ausgebildetes, einstĆ¼ckiges Rahmenteil 8 des Korpus 9 begrenzt. Ćber dem Behandlungsraum 2 ist auf an sich bekannte Weise eine Bedienblende 10 mit nicht nƤher dargestellten Bedien- und Anzeigeelementen angeordnet.The oven has a cooking chamber designed as a
An dem Rahmenteil 8 ist eine EinfĆ¼llvorrichtung 12 angeordnet, von der in
Wie aus
Hat der Benutzer eine Betriebsart oder ein Programm Ć¼ber die Bedienblende 10 ausgewƤhlt, bei dem eine vorher festgelegte Menge an Dampf und damit Wasser benƶtigt wird, wird der Benutzer Ć¼ber das nicht nƤher dargestellte Anzeigeelement der Bedienblende 10 aufgefordert, die TĆ¼r 4 zu ƶffnen und einen mit Wasser gefĆ¼llten nicht dargestellten BehƤlter derart an den Stutzen 12.1 zu halten, dass sich die Ćffnung 12.1.1 des Stutzens 12.1 unterhalb des Wasserspiegels befindet. Der Benutzer schwenkt den Stutzen 12.1 hierzu von der in
Nach dem oben erlƤuterten BefĆ¼llen kann der Benutzer den Stutzen 12.1 wieder von der EinfĆ¼lllage zurĆ¼ck in die Ruhelage schwenken. Alternativ hierzu wƤre es auch denkbar, dass diese RĆ¼ckĆ¼berfĆ¼hrung nach Beendigung des BefĆ¼llvorgangs mittels eines Stellmotors analog zu dem automatischen ĆberfĆ¼hren in die EinfĆ¼lllage auch automatisch erfolgt. Bei dem vorliegenden AusfĆ¼hrungsbeispiel ist dies jedoch nicht zwingend erforderlich. Wie aus der
In
Der Normalbetrieb des Systems 26 wurde bereits umfassend erlƤutert. Nachfolgend wird das erfindungsgemƤĆe Verfahren zur Reinigung des Systems 26 nƤher erlƤutert:The normal operation of the
Bei dem vorliegenden AusfĆ¼hrungsbeispiel wird das Verfahren zur Reinigung des Systems 26 in AbhƤngigkeit des an die elektrische Steuerung 38 weitergeleiteten Ausgangssignals des Temperatursensors 36 automatisch gestartet. Wie bereits erlƤutert, verkalkt der Strƶmungskanal 26.2.2 wƤhrend des Normalbetriebs, wodurch sich der WƤrmedurchgangswiderstand zwischen den Heizungen 26.2.1 und dem von der FlĆ¼ssigkeit durchstrƶmten Inneren des Strƶmungskanals 26.2.2 erhƶht. Entsprechend steigt bei ansonsten gleichen Bedingungen, also gleicher zugefĆ¼hrter elektrischer Leistung, die mittels des Temperatursensors 36 gemessene Temperatur an. WƤhrend die Temperatur bei einem frisch entkalktem System 26 hier bei 125Ā°C bis 135Ā°C liegt, steigt die Temperatur durch die zunehmende Verkalkung auf einen Wert von 159Ā°C an. Die elektrische Steuerung 38 ist hier derart ausgebildet, dass der Benutzer bei einer mit dem Temperatursensor 36 gemessenen Temperatur von 159Ā°C lediglich noch eine vorher festgelegte Anzahl von Anwendungen des HaushaltsgerƤts, beispielsweise von GarvorgƤngen, durchfĆ¼hren kann. Danach ist eine Reinigung, nƤmlich eine Entkalkung, zwingend erforderlich. Das gleiche gilt hier fĆ¼r den Fall, dass die Temperatur einen Wert von 160Ā°C Ć¼bersteigt. Das HaushaltsgerƤt kann erst dann wieder im Normalbetrieb genutzt werden, wenn die erforderliche Reinigung, hier Entkalkung, durchgefĆ¼hrt worden ist. HierfĆ¼r steht die elektrische Steuerung 38 auf dem Fachmann bekannte Weise mit dem Temperatursensor 36 SignalĆ¼bertragungsverbindung und die Heizungen 26.2.1 des Durchlauferhitzers 26.2 werden entsprechend mit bestromt.In the present embodiment, the method of cleaning the
Nachdem auf die vorgenannte Weise das Verfahren zur Reinigung des Systems 26 automatisch ausgelƶst worden ist, wird der Benutzer Ć¼ber das Anzeigeelement der Bedienblende 10 aufgefordert, das System analog zu dem ausfĆ¼hrlich geschilderten Normalbetrieb mit einer vorher festgelegten Menge an ReinigungsflĆ¼ssigkeit zu befĆ¼llen. Zum Entkalken wird hier verdĆ¼nnte ZitronensƤure als ReinigungsflĆ¼ssigkeit verwendet.After the process for cleaning the
Das System 26 wird solange automatisch mit verdĆ¼nnter ZitronensƤure befĆ¼llt, bis der FĆ¼llstand eine Hƶhe erreicht hat, bei der an der fluidleitenden Verbindung 32 an dem dampfseitigen Ende des Durchlauferhitzers 26.2 zwischen Tank 26.1 und Durchlauferhitzer 26.2 ein durchgehender FlĆ¼ssigkeitsspiegel ausgebildet ist, der mindestens die Hƶhe der Linie 40 in
Nun werden die Heizungen 26.2.1 mittels der elektrischen Steuerung 38 automatisch eingeschaltet und die ReinigungsflĆ¼ssigkeit wird auf eine Soll-Temperatur von hier 70Ā°C aufgeheizt. Diese Soll-Temperatur wird dann Ć¼ber eine nicht nƤher dargestellte Temperaturregelung zumindest fĆ¼r eine Reinigungsdauer von hier 60 min. im Wesentlichen konstant gehalten. Dadurch dass die ReinigungsflĆ¼ssigkeit in dem Durchlauferhitzer 26.2 wƤrmer als in dem Tank 26.1 ist, entsteht der gewĆ¼nschte Naturumlauf, also die in
Nach dem Ablauf der Reinigungsdauer veranlasst die elektrische Steuerung 38 eine Anzeige, mittels der der Benutzer aufgefordert wird, das System 26 auf die oben erlƤuterte Weise mit einer vorher festgelegten Menge an SpĆ¼lflĆ¼ssigkeit, hier Wasser, zu fĆ¼llen. Gleichzeitig wird der Naturumlauf im System 26 fortgefĆ¼hrt. Durch die Zugabe der SpĆ¼lflĆ¼ssigkeit in das System 26 wird zum einen die ReinigungsflĆ¼ssigkeit verdĆ¼nnt. Zum anderen wird Ć¼ber den Auslass 26.1.2 das entstandene Reinigungs-/SpĆ¼lmittel-Gemisch auf die in den Behandlungsraum 2 eingeschobene Fettpfanne aus dem System 26 ausgeschleust.After the cleaning period has elapsed, the
Der auch wƤhrend des vorgenannten SpĆ¼lvorgangs kontinuierlich fortgesetzte Naturumlauf sorgt fĆ¼r eine gute Durchmischung von SpĆ¼l- und ReinigungsflĆ¼ssigkeit. WĆ¼rde der Naturumlauf nicht fortgefĆ¼hrt, wĆ¼rde der Hauptanteil der dem System 26 zugegebenen SpĆ¼lflĆ¼ssigkeit direkt von dem Einlass 26.1.1 zu dem Auslass 26.1.2 strƶmen, so dass entweder eine nicht ausreichende SpĆ¼lwirkung erreicht wird oder der SpĆ¼lvorgang unzumutbar oft wiederholt werden mĆ¼sste. Dabei wĆ¼rde auch sehr viel SpĆ¼lflĆ¼ssigkeit benƶtigt werden.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
Bei dem vorliegenden AusfĆ¼hrungsbeispiel wird der SpĆ¼lvorgang, also das Zugeben von SpĆ¼lflĆ¼ssigkeit und das Ausschleusen des Reinigungs-/SpĆ¼lmittel-Gemisches aus dem System 26, insgesamt dreimal direkt nacheinander wiederholt. Damit die Fettpfanne nicht Ć¼berlƤuft, wird der Benutzer Ć¼ber die Anzeige darauf hingewiesen, die Fettpfanne zu leeren.In the present embodiment, the rinsing process, ie the addition of rinsing liquid and the removal of the cleaning / rinsing agent mixture from the
Das System 26 des vorliegenden AusfĆ¼hrungsbeispiels hat den weiteren Vorteil eines sehr kompakten Aufbaus. Zur fluidleitenden Verbindung von Tank 26.1 und Durchlauferhitzer 26.2 sind lediglich kurze Verbindungen 32, 34 erforderlich.The
Die vorliegende AusfĆ¼hrungsform bieten noch weitere Vorteile. Der dem dampfseitigen Ende des Durchlauferhitzers 26.2 zugewandte Abschnitt 26.1.4 des Tanks 26.1 ist als ein parabelfƶrmig gekrĆ¼mmter Umlenkabschnitt ausgebildet. Dadurch ist die gewĆ¼nschte Trennung des wƤhrend des Reinigungsvorgangs und/oder im Normalbetrieb des Systems 26 erzeugten Dampf-Tropfen-Gemisches auf konstruktiv besonders einfache Weise mƶglich. Durch die Integration des hierdurch gebildeten Tropfenabscheiders in den Tank 26.1 ist die Herstellung des Systems 26 weiter vereinfacht und kostengĆ¼nstiger.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. As a result, the desired separation of the vapor-droplet mixture generated during the cleaning process and / or during normal operation of the
Die erfindungsgemƤĆe Lƶsung ist nicht auf das erlƤuterte AusfĆ¼hrungsbeispiel begrenzt, sondern auch auf andere HaushaltsgerƤte, in denen Wasserdampf zum Einsatz kommt, anwendbar. Beispielsweise wƤre ein Einsatz in GetrƤnkebereitern, in anderen GargerƤten, wie Dampfgarer, Herde oder dergleichen, in WƤschebehandlungsmaschinen und in GeschirrspĆ¼lmaschinen denkbar.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. For example, use in beverage makers, in other cooking appliances such as steamer, stoves or the like, in laundry treatment machines and in dishwashers is conceivable.
So unterschiedlich wie die HaushaltsgerƤte kƶnnen auch die Reinigungsaufgaben und damit auch die verwendeten Reinigungs- und SpĆ¼lflĆ¼ssigkeiten sein. Neben Wasser sind auch andere FlĆ¼ssigkeiten oder in einer FlĆ¼ssigkeit lƶsbare Pulver, verdĆ¼nnt oder unverdĆ¼nnt, als Reinigungs- und/oder SpĆ¼lflĆ¼ssigkeit mƶglich.The cleaning tasks and thus also the cleaning and rinsing liquids used can be as different as the domestic appliances. In addition to water, other liquids or soluble in a liquid powders, diluted or undiluted, as a cleaning and / or rinsing liquid possible.
Anstelle das Verfahren in AbhƤngigkeit der mit dem Temperatursensor 36 gemessenen Temperatur automatisch zu starten, besteht auch die Mƶglichkeit, alternativ oder in ErgƤnzung dazu das Verfahren manuell durch eine Benutzereingabe, in AbhƤngigkeit der Betriebsdauer oder der EinschalthƤufigkeit des Durchlauferhitzers zu starten. Hierzu ist auf dem Fachmann bekannte Weise beispielsweise ein ZƤhl- oder Zeitglied in einer Auswerteschaltung der elektrischen Steuerung anzuordnen.Instead of automatically starting the method as a function of the temperature measured by the
Claims (10)
dadurch gekennzeichnet,
dass sich die Soll-Temperatur fĆ¼r die FlĆ¼ssigkeit vor dem FĆ¼llen des Tanks (26.1) mit der SpĆ¼lflĆ¼ssigkeit von der Soll-Temperatur nach dem FĆ¼llen des Tanks (26.1) mit der SpĆ¼lflĆ¼ssigkeit unterscheidet.Method according to claim 1,
characterized,
that the target temperature for the liquid before filling the tank (26.1) with the rinsing liquid from the target temperature after filling the tank (26.1) differs with the rinsing liquid.
dadurch gekennzeichnet,
dass das FĆ¼llen des Tanks (26.1) mit SpĆ¼lflĆ¼ssigkeit und das Ausschleusen des Gemisches aus Reinigungs- und SpĆ¼lflĆ¼ssigkeit mehrmals direkt nacheinander wiederholt werden.Method according to claim 1 or 2,
characterized,
that the filling of the tank (26.1) with rinsing liquid and the ejection of the mixture of cleaning and rinsing fluid are repeated several times in succession.
dadurch gekennzeichnet,
dass das Verfahren in AbhƤngigkeit von einer an dem Durchlauferhitzer (26.2) gemessenen Start-Temperatur oder in AbhƤngigkeit der Betriebsdauer oder der EinschalthƤufigkeit des Durchlauferhitzers (26.2) gestartet wird.Method according to at least one of claims 1 to 3,
characterized,
in that the method is started as a function of a start temperature measured at the instantaneous water heater (26.2) or as a function of the operating time or the switch-on frequency of the instantaneous water heater (26.2).
dadurch gekennzeichnet,
dass der Tank (26.1) zur Abscheidung von Tropfen aus dem erzeugten Dampf einen Tropfenabscheider (26.1.4) aufweist, wobei der Tropfenabscheider (26.1.4) als ein integraler Bestandteil des Tanks (26.1) ausgebildet ist.System (26) for carrying out a method according to one of claims 1 to 4, comprising a tank (26.1) for storing water and a water heater (26.2) for generating steam for a treatment chamber (2) of a household appliance, wherein the tank ( 26.1) and the water heater (26.2) both at the steam-side and at the water-side end of the water heater (26.2) are fluidly connected to each other and the fluid-conducting connection (32) at the steam-side end in the operating position of the system (26) a higher position than occupies the water-side end (34),
characterized,
in that the tank (26.1) has a droplet separator (26.1.4) for the separation of droplets from the generated steam, the droplet separator (26.1.4) being formed as an integral part of the tank (26.1).
dadurch gekennzeichnet,
dass der Tropfenabscheider (26.1.4) einen gekrĆ¼mmten Umlenkabschnitt zur Umlenkung des Dampf-Tropfen-Gemisches aufweist, welcher oberhalb der fluidleitenden Verbindung (32) an dem dampfseitigen Ende ausgebildet ist.System (26) according to claim 5,
characterized,
that the droplet separator (26.1.4) has a curved deflecting section for deflecting the steam-drop mixture, which above the fluid-conducting connection (32) is formed on the steam-side end.
dadurch gekennzeichnet,
dass der Umlenkabschnitt parabelfƶrmig gekrĆ¼mmt ausgebildet ist.System (26) according to claim 5 or 6,
characterized,
that the deflection section is formed parabolic curved.
dadurch gekennzeichnet,
dass der Tank (26.1) einen Einlass (26.1.1) zum BefĆ¼llen mit einer FlĆ¼ssigkeit und einen Auslass (26.1.2) zum Ausschleusen von Ć¼berschĆ¼ssiger FlĆ¼ssigkeit oder Dampf aufweist, wobei der Einlass (26.1.1) Ć¼ber eine Absperrvorrichtung (44) flĆ¼ssigkeitsdicht verschlieĆbar ist.System (26) according to at least one of claims 5 to 7,
characterized,
in that the tank (26.1) has an inlet (26.1.1) for filling with a liquid and an outlet (26.1.2) for discharging excess liquid or vapor, wherein the inlet (26.1.1) is liquid-tight via a shut-off device (44) is closable.
dadurch gekennzeichnet,
dass an dem Durchlauferhitzer (26.2) ein Temperatursensor (36) angeordnet ist, der zur Steuerung und/oder Regelung eines Verfahrens gemĆ¤Ć einem der AnsprĆ¼che 1 bis 4 mit einer elektrischen Steuerung (38) in SignalĆ¼bertragungsverbindung steht.System (26) according to at least one of claims 5 to 8,
characterized,
in that a temperature sensor (36) which is in signal transmission connection with an electric control (38) for controlling and / or regulating a method according to one of claims 1 to 4 is arranged on the instantaneous water heater (26.2).
dadurch gekennzeichnet,
dass in einer Auswerteschaltung der elektrischen Steuerung (38) ein ZƤhl- oder Zeitglied zur Steuerung eines Verfahrens gemĆ¤Ć einem der AnsprĆ¼che 1 bis 4 angeordnet ist, das in AbhƤngigkeit der Betriebsdauer oder der EinschalthƤufigkeit des Durchlauferhitzers (26.2) betƤtigbar ist.System (26) according to at least one of claims 5 to 9,
characterized,
that a counter or timing element for controlling a process arranged in accordance with one of claims 1 to 4 in an evaluation circuit of the electrical control (38), which in Dependent on the operating time or the frequency of activation of the instantaneous water heater (26.2) can be actuated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048567A DE102007048567B4 (en) | 2007-10-09 | 2007-10-09 | Process for cleaning a system consisting of a tank and a water heater, and system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2048444A2 true EP2048444A2 (en) | 2009-04-15 |
EP2048444A3 EP2048444A3 (en) | 2012-02-01 |
EP2048444B1 EP2048444B1 (en) | 2016-02-24 |
Family
ID=40193560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08017435.2A Active EP2048444B1 (en) | 2007-10-09 | 2008-10-04 | Method for cleaning a system, composed of a tank and a continous-flow heater |
Country Status (2)
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EP (1) | EP2048444B1 (en) |
DE (1) | DE102007048567B4 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2703729A1 (en) * | 2012-08-28 | 2014-03-05 | Electrolux Home Products Corporation N.V. | A cooking oven with an oven cavity and a cleaning apparatus |
EP2990727A1 (en) * | 2014-09-01 | 2016-03-02 | Miele & Cie. KG | Cooking device |
EP3112765A1 (en) * | 2015-06-29 | 2017-01-04 | Whirlpool Corporation | Steam generation system for use in a cooking appliance |
AU2013247086B2 (en) * | 2012-04-11 | 2017-04-20 | Electrolux Home Products Corporation N. V. | Oven for baking food products |
WO2019185321A1 (en) * | 2018-03-29 | 2019-10-03 | BSH HausgerƤte GmbH | Domestic steam treatment appliance |
KR20190142092A (en) * | 2018-06-15 | 2019-12-26 | ģģ§ģ ģ ģ£¼ģķģ¬ | Steam generating apparatus and cooking device having the same |
KR20190142084A (en) * | 2018-06-15 | 2019-12-26 | ģģ§ģ ģ ģ£¼ģķģ¬ | Steam generating apparatus and cooking device having the same |
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DE102011054687B4 (en) | 2011-10-21 | 2018-04-05 | Miele & Cie. Kg | Cooking appliance with evaporation device and method for producing an evaporation device |
EP2705779B1 (en) * | 2012-09-10 | 2014-09-03 | Electrolux Home Products Corporation N.V. | A steam system for a steam cooking appliance |
EP2896882B1 (en) | 2014-01-15 | 2022-06-01 | Electrolux Appliances Aktiebolag | Steam generator and household appliance |
DE102019125135A1 (en) * | 2019-09-18 | 2020-09-03 | Miele & Cie. Kg | Tank for a cooking device and cooking device |
EP4357681A1 (en) * | 2022-10-19 | 2024-04-24 | SMEG S.p.A. | Steam oven and method for monitoring the limescale level in a steam oven |
DE102022212145A1 (en) | 2022-11-15 | 2024-05-16 | E.G.O. Elektro-GerƤtebau GmbH | Device for generating steam and household appliance with such a device |
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DE10259829B4 (en) * | 2002-12-19 | 2005-10-06 | Convotherm ElektrogerƤte GmbH | Method for decalcifying steam generators for cooking appliances |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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AU2013247086B2 (en) * | 2012-04-11 | 2017-04-20 | Electrolux Home Products Corporation N. V. | Oven for baking food products |
EP2650615B1 (en) * | 2012-04-11 | 2018-01-10 | Electrolux Home Products Corporation N.V. | Oven for baking food products |
EP2703729A1 (en) * | 2012-08-28 | 2014-03-05 | Electrolux Home Products Corporation N.V. | A cooking oven with an oven cavity and a cleaning apparatus |
WO2014032986A1 (en) * | 2012-08-28 | 2014-03-06 | Electrolux Home Products Corporation N. V. | A cooking oven with an oven cavity and a cleaning apparatus |
EP2990727A1 (en) * | 2014-09-01 | 2016-03-02 | Miele & Cie. KG | Cooking device |
EP3112765A1 (en) * | 2015-06-29 | 2017-01-04 | Whirlpool Corporation | Steam generation system for use in a cooking appliance |
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US10973359B2 (en) | 2015-06-29 | 2021-04-13 | Whirlpool Corporation | Steam generation system for use in cooking appliance |
WO2019185321A1 (en) * | 2018-03-29 | 2019-10-03 | BSH HausgerƤte GmbH | Domestic steam treatment appliance |
KR20190142092A (en) * | 2018-06-15 | 2019-12-26 | ģģ§ģ ģ ģ£¼ģķģ¬ | Steam generating apparatus and cooking device having the same |
KR20190142084A (en) * | 2018-06-15 | 2019-12-26 | ģģ§ģ ģ ģ£¼ģķģ¬ | Steam generating apparatus and cooking device having the same |
Also Published As
Publication number | Publication date |
---|---|
EP2048444B1 (en) | 2016-02-24 |
DE102007048567A1 (en) | 2009-04-16 |
DE102007048567B4 (en) | 2011-11-24 |
EP2048444A3 (en) | 2012-02-01 |
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