EP1953458A1 - Procédé de nettoyage d'un appareil de cuisson et appareil de cuisson correspondant - Google Patents

Procédé de nettoyage d'un appareil de cuisson et appareil de cuisson correspondant Download PDF

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Publication number
EP1953458A1
EP1953458A1 EP07033600A EP07033600A EP1953458A1 EP 1953458 A1 EP1953458 A1 EP 1953458A1 EP 07033600 A EP07033600 A EP 07033600A EP 07033600 A EP07033600 A EP 07033600A EP 1953458 A1 EP1953458 A1 EP 1953458A1
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EP
European Patent Office
Prior art keywords
cleaning
fluid
cleaning fluid
supplied
steam generator
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
Application number
EP07033600A
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German (de)
English (en)
Other versions
EP1953458B1 (fr
Inventor
Wilhelm Reimers
Rainer Otminghaus
Gerhard Kramer
Wolfgang Breinl
Manfred Bucher
Thomas Garner
Paul Linseisen
Tobias Gayer
Stefan Dr. Rusche
Wolfgang Holzapfel
Thomas Dr. Schreiner
Björn Kuhlmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rational AG
Original Assignee
Rational AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rational AG filed Critical Rational AG
Priority to EP08011832A priority Critical patent/EP1980792A3/fr
Publication of EP1953458A1 publication Critical patent/EP1953458A1/fr
Application granted granted Critical
Publication of EP1953458B1 publication Critical patent/EP1953458B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a method for cleaning a cooking appliance, in particular a combi steamer or Dampfgarologies, and a cooking appliance.
  • the WO 02/068876 A1 a method in which a liquid consisting of water and a cleaning agent, such as a cleaner, a rinsing agent, a rinse aid and / or a decalcifier, for cleaning a cooking chamber is distributed in this.
  • a cleaning agent such as a cleaner, a rinsing agent, a rinse aid and / or a decalcifier
  • this liquid in particular via a pump, fed to a suction of a blower, distributed in the cooking chamber and then via a cooking chamber drain into an extinguishing box, from which it can be conveyed again by the pump back into the oven.
  • the disclosure DE 10 2004 001 220 B3 a cleaning arrangement for a cooking appliance with a cooking chamber, a cooking chamber inlet and a cooking chamber outlet for circulating at least one fluid, such as a cleaning fleet.
  • the cooking chamber has in this case downstream of the cooking chamber to a shut-off device, which makes it possible to establish a connection between the cooking chamber drain and a Garraceabfluß or a connection between the cooking chamber and the cooking chamber inlet for circulation of the fluid through the cooking chamber.
  • a comparable procedure is from the EP 1 430 823 A1 known, in which a descaling agent from a reservoir via a connecting line, in which a metering device and a controllable shut-off valve are arranged, a steam generator is supplied.
  • the amount of descaling agent is determined as a function of the operating time and / or a determined degree of calcification of the steam generator at a maximum water level.
  • Another method for descaling of steam generators for cooking appliances using a chemical descaling agent is known from EP 1 430 823 A1 known.
  • a descaling agent is introduced outside the cooking process in the steam generator, and the steam generator is emptied after a contact time of the descaling agent and then rinsed with fresh water.
  • the not pre-published DE 10 2006 010 460 A1 discloses a method for cleaning a cooking appliance and a cooking appliance.
  • a cleaning fluid which is passed through a part of a cooking appliance, such as a cooking chamber, in a subsequent cleaning phase is at least partially supplied to a steam generator of the cooking appliance in order to achieve a decalcification.
  • This method has basically worked well, but it has been shown that for a complete decalcification of the steam generator, a comparatively long exposure time of the cleaning fluid is necessary.
  • a disadvantage of the known from the prior art method for decalcifying a steam generator is therefore that on the one hand relatively aggressive chemicals in the cooking appliance, in particular the steam generator, must be introduced to make a decalcification upon detection of a given degree of calcification.
  • the use of such comparatively aggressive chemicals poses a high risk to a user, and moreover, these chemicals are subject to special regulations regarding their transportation and storage, so that a user must take special precautions for the storage and transportation of these chemicals, thus creating a increased cost comes.
  • the implementation of the known from the prior art decalcifying leads to longer operational readiness failures of the cooking appliance, which also leads to production losses and thus increased operating costs.
  • the high concentration of descaling agent used in a steam generator for decalcifying it makes it necessary for it to be first diluted to avoid unnecessary environmental pollution before it can be discharged.
  • the object of the present invention is therefore to provide a method for cleaning a cooking appliance which overcomes the disadvantages of the prior art, in particular one Descaling of a steam generator of the cooking appliance achieved while reducing the operating costs and downtime of the cooking appliance.
  • a method for cleaning a cooking appliance in particular a combi steamer or Dampfgarologies, in which a first cleaning fluid at least partially at least a first interior by means of at least a first circulating means which is in operative connection with at least a first fluid supply means, and / or at least partially at least a second inner space by means of at least one second circulation device, which is operatively connected to at least one second fluid supply, in particular under high pressure, and the first cleaning fluid from the first interior by means of at least one third circulation means, with at least a first fluid discharge of the first inner space is in operative connection, and / or from the second inner space by means of at least a fourth circulating device, with at least one second fluid discharge device or a fourth fluid discharge in at least a first cleaning phase, the first cleaning fluid is passed through at least a portion of the first interior and at least a second cleaning phase, the first cleaning fluid is at least partially supplied to the second interior, the amount of the first inside of the first cleaning fluid supplied and / or the amount
  • the first and the second cleaning phase during at least a second time period are performed at least partially overlapping time.
  • first and the second cleaning phase are performed simultaneously during the second time period.
  • the invention also proposes that the first and second cleaning phases are carried out at least once, and at least once at the same time, the first and second cleaning phases are carried out at least once.
  • Preferred embodiments of the invention are characterized in that the first cleaning fluid, in particular before performing the first and / or second cleaning phase, the cooking appliance is at least partially supplied, preferably at least temporarily stored in a first collecting container and / or for performing the first and / or second Cleaning phase the first interior, the second interior, at least a third Fluidab2020 Rheinwalderies from the first interior, at least a third fluid supply to the first interior, at least a fourth fluid discharge from the second interior and / or at least a fourth fluid supply to the second interior, in particular dosed via a first metering device, wherein preferably the first and third fluid discharge means are performed in one, the first and third fluid supply means are executed in one, the second and fourth fluid discharge means g in one run, and / or the second and fourth fluid supply are performed in one.
  • the first cleaning fluid in particular before the first and / or second cleaning phase is carried out, is at least partially generated within the cooking appliance, preferably at least one first cleaning substance is mixed with at least one second cleaning fluid, preferably water, in particular the first cleaning substance is dissolved in the second cleaning fluid, and / or the first cleaning fluid is diluted by mixing with the second cleaning fluid, preferably the first cleaning substance before and / or at the beginning of the first cleaning phase the first interior, the third fluid discharge device and / or the third fluid supply means and / or before and / or at the beginning of the second cleaning phase the second interior, the fourth fluid discharge device, the fourth fluid supply and / or at least a first mixing container, in particular metered via a second metering device, is supplied.
  • the second cleaning fluid in particular before mixing with the first cleaning substance and / or a dissolution of the first cleaning substance, is heated.
  • the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid is collected after passage through the first and / or second interior in at least one second header, preferably the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid is recirculated by means of a fifth circulation device from the second collection container into the first internal space and / or by means of a sixth circulation device from the second collection container into the second internal space.
  • first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid is supplied to the first multi-way valve from the second reservoir.
  • the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid preferably by means of at least a seventh circulation device, out of the first interior, preferably in the second reservoir and / or in a drain of the cooking appliance or, and / or the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid, preferably by means of at least one eighth circulating device, out of the second interior, preferably in the second reservoir and / or the drain of the cooking appliance, is promoted or become.
  • Cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid, in particular by means of at least one second multi-way valve is controlled or regulated, and / or the amount of the second reservoir from the second interior of the supplied first cleaning fluid and / or the first cleaning substance and / or or the second cleaning fluid and / or the amount of the first cleaning fluid supplied to the outlet of the cooking appliance and / or the first cleaning substance and / or the second cleaning fluid, in particular by means of at least one third multi-way valve controlled or regulated.
  • the supply of the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid to the first and / or second interior in response to a first level in the first header and / or a second level in the second Collecting takes place.
  • the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid is the first and / or second internal space is supplied or, if the first level reaches a first threshold and / or the second level reaches a second threshold Has.
  • the invention also proposes that the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid is / are supplied to the second internal space until a predetermined third threshold value of its fill level is reached.
  • At least a third cleaning fluid in particular comprising the second cleaning fluid and / or water, is supplied to the second internal space after a supply of the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid, preferably until it has been reached a predetermined fourth threshold of its level, preferably wherein the third and fourth threshold of the level are identical.
  • the invention also proposes that the first cleaning fluid and / or the first cleaning substance and / or the second cleaning fluid remain or be heated and / or heated after being supplied into the second internal space for a predetermined contact time.
  • the third cleaning fluid during heating preferably intermittently, the third cleaning fluid is supplied, wherein the supply is preferably carried out locally limited, in particular to reduce a temperature stratification in the first cleaning fluid.
  • the third cleaning fluid is supplied to the rinse, preferably the third cleaning fluid heated becomes.
  • the first cleaning fluid is at least partially formed from at least one rinse aid, in particular comprising citric acid.
  • At least a fourth cleaning fluid is supplied to the first interior before the second cleaning phase in at least a third cleaning phase, in particular by at least a portion of the first interior is performed.
  • the fourth cleaning fluid in particular before performing the third cleaning phase, at least partially supplied to the cooking appliance, preferably at least temporarily stored a third reservoir and / or for performing the third cleaning phase the third reservoir, the first interior, the first and / or third fluid discharge means and / or the first and / or third fluid supply means, in particular dosed via a third metering device, is supplied, wherein in particular the second collecting container and the third collecting container are executed in one.
  • An inventive method may be characterized in that the fourth cleaning fluid, in particular before performing the third cleaning phase, within the cooking device is at least partially generated, preferably at least a second cleaning substance with at least a fifth cleaning fluid, preferably water, is mixed, in particular the second cleaning substance in the fifth cleaning fluid is dissolved, and / or the fourth cleaning fluid is diluted by mixing with the fifth cleaning fluid, wherein preferably the second cleaning substance before and / or at the beginning of the third cleaning phase the first interior, the first and / or third fluid discharge, the first and / or third fluid supply device and / or at least a second mixing container, in particular metered via a fourth metering device, is supplied.
  • the fifth cleaning fluid in particular before mixing with the second cleaning substance and / or a dissolution of the second cleaning substance, is heated.
  • the invention proposes that the fourth cleaning fluid, the second cleaning substance and / or the fifth cleaning fluid are collected after passage through the first interior in the third reservoir, preferably the fourth cleaning fluid, the second cleaning substance and / or the fifth cleaning fluid by means of a ninth circulation from the third reservoir into the first interior is recirculated, wherein in particular the ninth circulation means and the fifth circulation means are carried out in one.
  • a method according to the invention may be characterized in that at least one sixth, at least partially vaporous cleaning fluid, in particular steam, is supplied to the first interior space during the third cleaning phase, wherein preferably the sixth cleaning fluid is generated in the second interior space.
  • the fourth cleaning fluid, the second cleaning substance, the fifth cleaning fluid, and / or the sixth cleaning fluid preferably by means of the seventh circulation device, out of the first interior, preferably in the second reservoir and / or in a drain the cooking appliance, is promoted or become.
  • An inventive method may be characterized in that a plurality of third purification phases is carried out, wherein preferably in a first third cleaning phase as the fourth cleaning fluid water is used, in a, in particular the first third cleaning phase subsequent, second third cleaning phase, the fourth cleaning fluid by mixing the second cleaning substance is produced with the fifth cleaning fluid and / or in a, in particular the first third cleaning phase and / or the second third cleaning phase subsequent third third cleaning phase is used as the fourth cleaning fluid water, wherein in particular in the third third cleaning phase, the fourth cleaning fluid to the second Mixing container is supplied.
  • the fourth cleaning fluid is at least partially formed from at least one cleaning agent for detachment of dirt, in particular cooking residues, on an inner wall of the first interior, in particular contaminants comprising proteins, sugars, carbohydrates, carbonates and / or encrustations this, to be solved.
  • a seventh cleaning fluid in particular comprising the second cleaning fluid and / or water is supplied to the rinse, in particular the seventh cleaning fluid is passed through at least a portion of the first interior, the seventh cleaning fluid to the second reservoir and / or the second mixing container is supplied and / or the seventh cleaning fluid is heated.
  • a particularly preferred embodiment of the method provides that at least one clergyes, at least partially vaporous cleaning fluid, in particular water vapor is supplied to the first interior after a passage of the first cleaning fluid, the fourth cleaning fluid, the fifth cleaning fluid and / or the seventh cleaning fluid, preferably the Eighth cleaning fluid is generated in the second interior and / or eighth cleaning fluid, the sixth cleaning fluid is used.
  • the first interior in particular after a passage of the first cleaning fluid, the fourth cleaning fluid, the fifth cleaning fluid and / or the seventh cleaning fluid and / or the supply and / or emptying of the eighth cleaning fluid is heated.
  • the invention also provides a cooking appliance comprising a cooking chamber, a steam generator operatively connected thereto, a boiler, at least one first fluid supply device for the cooking chamber, which is in operative connection with at least one first circulation device and / or at least one third circulation device and one second circulation device at least one second feed device for at least water in the steam generator and at least one second fluid supply device of the steam generator, which is in operative connection with at least the second circulation device and / or at least one fourth circulation device and the first circulation device, wherein the cooking device is set up to carry out a method according to the invention.
  • the cooking appliance may be characterized by at least one first feeder for at least water in the oven.
  • the cooking chamber and / or the steam generator in particular at least a first collecting container, a metering device, a first mixing container and / or at least a first shut-off, by means of the first circulation means and / or second circulation means a first cleaning fluid, preferably comprising Citric acid is supplied.
  • the invention also proposes that the cooking chamber, the first mixing container and / or the steam generator, in particular via a device connection for a domestic water installation and / or at least a second shut-off device as a second and / or as a third cleaning fluid water is supplied, in particular for Forming the first cleaning fluid from a, in particular non-fluid, first cleaning substance and / or for diluting the first cleaning fluid and / or for rinsing.
  • Preferred cooking appliances according to the invention are further characterized in that the cooking space comprises at least a first fluid discharge means and / or the steam generator at least a second fluid discharge means, wherein preferably at least the third circulation means with the first fluid discharge means and / or at least the fourth circulation means with the second fluid discharge means in Operative connection, wherein most preferably the first and third circulation means are formed in one and / or the second and fourth circulation means are formed in one.
  • embodiments of the invention may be characterized by a second collecting container, in particular in the form of an extinguishing box and / or condenser, wherein preferably the second collecting container with the first, second, third and / or fourth circulating means and / or at least one third feeding means, preferably in the form at least one Ablöschdüse and / or is connected to the device connection and / or a third shut-off device in operative connection.
  • At least one first multi-way valve having at least one first connection to the second collecting container, at least one second connection to the first supply device and / or the first fluid supply device and / or at least one third connection be provided on the second supply means and / or the second fluid supply means.
  • first, second and / or third feed means each comprise at least one Beschwadungsdüse.
  • the first fluid discharge device in particular with the interposition of the third circulation device, preferably via at least a second multiway valve, in particular in the form of a three-way valve, with the second reservoir and / or a drain of the cooking appliance is in operative connection, preferably at least one first connection of the second multi-way valve to the second collecting container, at least one second connection of the second multiway valve to the outflow of the cooking appliance and / or at least a third connection of the second multiway valve to the first fluid discharge device is or are in operative connection, and / or the second fluid discharge device, in particular, with the interposition of the fourth circulation device, preferably via at least a third multi-way valve, in particular in the form of a three-way valve, with the second reservoir and / or the drain of the cooking appliance is in operative connection, wherein Preferably, at least a first terminal of the third multiway valve to the second reservoir, at least a second port of the third multiway valve to the drain and / or at least a
  • the cooking chamber is in operative connection with at least one first heating device and / or fan device, and / or the steam generator is in operative connection with at least one second heating device, this preferably comprises.
  • Embodiments of the invention may also be characterized by a fifth circulating means, preferably comprising of the first circulating means, between the second collecting container and the cooking chamber, and / or a sixth circulating means, preferably comprising the second circulating means or the first circulating means and the third circulation means, between the second header tank and the steam generator.
  • embodiments may be characterized by a seventh circulation device, preferably comprising the first circulation device, between the cooking chamber and the drain, preferably with the interposition of a fourth shut-off device and / or an eighth circulation device, preferably comprises of the second circulation device, between the steam generator and the steam generator and the drain, preferably with the interposition of a fifth Absüerr observed.
  • a fourth cleaning fluid preferably comprising a cooking residue dissolving substance
  • the fourth cleaning fluid preferably by means of a ninth circulation means, in particular in the form of the fifth circulation means, through the cooking chamber is circulatable.
  • the second mixing container in particular with the interposition of a tenth circulating device, is in fluid communication with the second collecting container, a third collecting container and / or the cooking chamber.
  • the two aforementioned alternatives can be characterized in that the cooking chamber and / or the second mixing vessel, in particular via the device connection and / or at least a sixth shut-off, as a fifth cleaning fluid water is supplied, in particular for forming the fourth cleaning fluid from a particular not -fluids, second cleaning substance and / or for diluting the fourth cleaning fluid and / or for rinsing.
  • first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and / or tenth circulation means are formed in one, and / or the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and / or tenth circulating means comprises or comprise at least one, in particular dirt-driven, pump.
  • Preferred cooking appliances according to the invention are further characterized by at least one filling level, in particular of the second collecting container, detecting the first level sensor and / or, in particular the steam generator, detecting second level sensor, and / or at least one other sensor, in particular for detecting the temperature in the cooking chamber , the steam generator and / or the second reservoir.
  • the invention also proposes that the second collecting container comprises at least one overflow device and / or a siphon, in particular connected to the outflow.
  • preferred cooking devices are also characterized by at least one regulating and / or control device in operative connection with the steam generator, the first and / or second heating device, the fan device, the first and / or second and / or third feeding device, the first and / or or the second fluid supply means, the first, second, third, fourth, fifth, sixth and / or seventh circulation means, the first, second and / or third multi-way valve, the first and / or second fluid discharge means, the first, second, third and / or fourth shut-off device, the metering device, the first, second and / or third level sensor, the further sensor, the overflow device, a storage device, a display device, and / or an input device for selectively carrying out a method for cleaning the cooking appliance or a method for cooking food ,
  • the invention is thus based on the surprising finding that the decalcification of a steam generator of a cooking appliance, in particular in the form of a combi steamer or Dampfgarillesös, thereby effectively can be achieved that a cleaning liquid not only to clean a cooking chamber but also a steam generator, in particular the boiler of the steam generator , can be used specifically in at least two cleaning phases.
  • the two purification phases differ from each other insofar as that in a first Cleaning phase of the cooking chamber and be cleaned in a second cleaning phase of the steam generator, the cleaning phase can be carried out successively or simultaneously and in a successive implementation first the steam generator and then the cooking chamber can be cleaned, the amount of the cooking chamber and / or steam generator supplied Cleaning fluid is controlled or regulated.
  • this cleaning liquid comprises a rinse solution comprising as chemical substance an acid, such as citric acid, for dissolving and dissolving limescale.
  • a cleaning of the cooking chamber depending on the application of the cooking appliance daily, at least weekly, carried out. For example, it can be provided that after about 18 hours of operation of the cooking appliance, a cleaning of the cooking chamber is carried out. Because of this comparatively high frequency of carrying out cleaning operations in the cooking chamber, the combination according to the invention with the performance of cleaning processes in the steam generator within the steam generator results in only relatively little calcification. Therefore, a relatively safe, non-polluting decalcifying agent can be used as cleaning fluid. In addition, the contact time of the cleaning liquid to achieve the descaling can be kept short.
  • the inventive method results in that the time intervals between maintenance operations can be extended to cooking appliances, while also the technical effort to clean the steam generator is reduced.
  • a decalcification of the steam generator is integrated in a substantially automatic cleaning process of the cooking chamber, whereby the decalcification is no longer perceived by a user, in particular no additional actions have to be made by him for the descaling of the steam generator. Not to be neglected is also the reduction of environmental pollution.
  • the efficiency of a cleaning of the boiler of the steam generator and the cooking chamber is thereby increased, that a descaling agent is first supplied to the steam generator, preferably in concentrated form, in order to achieve descaling of the steam generator, and is subsequently at least partially circulated through the cooking chamber , if necessary, diluted with water to achieve a final rinse.
  • the actual decalcification step of the steam generator preferably takes place parallel to a circulation of a further cleaning fluid through the cooking chamber, before said rinsing.
  • the necessary amount of descaling agent or rinse aid is available for completely descaling the steam generator when the descaling agent is first supplied to the steam generator.
  • the inventive method with the supply of a descaling agent to the steam generator has the advantage that the cleaning liquor used in the steam generator for descaling can also be used for rinsing the cooking chamber, the descaling agent is preferably diluted before it is used for rinsing the cooking chamber.
  • This dilution of the descaling agent which is recommended for environmental protection reasons, before the descaling is discharged from the cooking appliance, especially if biological wastewater treatment plants are used at the site of the cooking appliance, can therefore be used meaningfully to reduce the concentration of the descaling agent so far that a satisfactory final rinse of the cooking chamber is achieved.
  • the descaling agent preferably in the form of citric acid
  • the desired dilution of the descaling agent is simultaneously achieved when rinsing to produce a suitable rinse liquor.
  • This sequence of a cleaning cycle within a cooking appliance offers the advantage over, for example, the use of a cleaning or rinse aid for producing a final rinse or decalcifying fluid, which ensures that a quantity of descaling agent, in particular citric acid, required for complete descaling of the steam generator the steam generator is available, the amount of descaling agent can be adapted to the particular circumstances, in particular can be precisely metered, depending on a capacity of the steam generator, a degree of calcification, etc.
  • this embodiment of the invention has the advantage that a user of the cooking appliance independently of a cleaning of the cooking appliance, a separate program for carrying out a decalcification of the steam generator or steam generator can be offered or depending on an operating time of the steam generator a user performing a it can be proposed to such descaling process.
  • a first fluid supply to the cooking chamber and / or a first fluid supply to the steam generator with at least one circulating means is in operative connection, in particular connected to this, so that the cleaning liquid can be supplied under high pressure. If a cleaning fluid is introduced into the cooking chamber or steam generator only under a water pressure provided by a domestic water connection, then usually only insufficient detachment and / or flooding of impurities in the cooking chamber or limescale deposits in the steam generator can be achieved, especially since the water pressure is reduced by necessary air separation distances, so that only a reduced pressure for spraying the cleaning liquid is available.
  • the cleaning liquid to the cooking chamber or steam generator can be supplied under high pressure, resulting in a mechanical abrasion on the surfaces of the cooking chamber or the boiler of the steam generator results, so that impurities or calcifications of these surfaces can be solved better.
  • the injection can be carried out in different areas of the cooking chamber or steam generator, so that in particular by a contamination or calcification heavily affected areas, such as the surface of a radiator, can be sprayed targeted. Injecting such areas also leads to the cleaning liquid is distributed chaotically in the cooking chamber or the steam generator, in particular on sidewalls, which have lower impurities passes.
  • the cleaning liquid can be sprayed in a bottom region of the cooking chamber or steam generator in order to supply contamination or calcification particles present at the bottom to a first fluid discharge device of the cooking chamber or to a second fluid discharge device of the steam generator.
  • the bottom of the cooking chamber or steam generator is inclined in the direction of the first or second fluid discharge device.
  • the first or second fluid removal device is in operative connection with a further circulating device, in particular a dirt-driven pump.
  • a further circulation device in particular a dirt-driven pump.
  • the flushing of impurity or lime particles can be further supported by a negative pressure is generated by the further circulation device, which causes the impurities entrained with the liquid and are discharged from the cooking chamber or steam generator.
  • This embodiment has the advantage that only a reduced amount of chemicals for remaining or adhering impurity or limescale deposits are needed.
  • injecting the cleaning liquid into the cooking chamber or steam generator already a large part of the impurities or limescale replaced by the mechanical cleaning effect of the spray and rinsed out of the interior or the steam generator, so that these impurities or lime deposits before the penetration of a Chemical are largely detached and rinsed out.
  • the geometry of the boiler of the steam generator and / or the feed line to the boiler of the steam generator is designed or are that both the supply line to the steam generator and the steam generator after draining the descaling automatically completely drained to avoid rinsing the steam generator with clean water.
  • FIG. 1 the structure of a cooking appliance 1 according to the invention is shown in the form of a combi steamer.
  • the cooking device 1 comprises a at least one sensor 2, for example.
  • a at least one sensor 4 for detecting the temperature and a level sensor 8 having steam generator 5.
  • the cooking chamber 3 steam from the steam generator 5 are supplied.
  • the cooking chamber 3 is in operative connection with a first fluid supply device 7 and the steam generator 5 with a second fluid supply device 9.
  • the cooking chamber 3 is in operative connection with a fan chamber, in which a heating device and a fan device 10 are arranged.
  • the cooking appliance 1 also has a capacitor 11, in which a further sensor 12 z. B. is arranged for detecting the temperature, which is connected via a fluid line 13 with a first fluid discharge 15 of the cooking chamber 3, and a drain 16, an overflow 17 and a siphon 18, all three in a drain 19 of the cooking device. 1 with the interposition of a shut-off device in the form of a valve 27 open.
  • the drain 16 is also connected via a first circulation device in the form of a pump 25 to the first fluid supply device 7 of the cooking chamber 3. This structure enables a first cleaning fluid 21 present in the quenching box 11 to be circulated in the cooking appliance 1 via the drain 16, the first fluid supply device 7, the cooking chamber 3, the first fluid discharge device 15 and the fluid line 13.
  • the pump 25 causes the cleaning fluid 21 to the cooking chamber 3 via the first fluid supply 7 under high pressure can be supplied.
  • a mechanical abrasion of contaminants on the surfaces of the cooking chamber 3 is thereby achieved, whereby the cleaning of the cooking chamber 3 is improved.
  • loosened impurities can be flushed out of the cooking chamber 3 into the first fluid discharge device 15 much better due to the increased pressure.
  • the first fluid supply device 7 is connected to a first supply device (not shown), for example in the form of a spray head.
  • This spray head can have at least one nozzle which can be directed onto at least one surface of the cooking chamber 3.
  • the spray head may be a rotating or moving spray head, so that essentially all surfaces of the cooking chamber 3 can be sprayed by means of a jet of the first cleaning fluid 21 and thus cleaned.
  • the cooking appliance 1 also has a second circulation device in the form of a pump 26, which connects the second fluid supply device 9 with a second supply device 54 of the steam generator 5.
  • a second cleaning fluid 39 for example via a device connection 47 for a domestic water installation, not shown, a valve 53, a fluid supply line 49 and a reflux 63 supplied fresh water, are introduced into the steam generator 5 under high pressure.
  • the second cleaning fluid 39 is introduced under high pressure in the steam generator 5, existing, chipped lime particles can be effectively flushed out of the steam generator 5 on the bottom of the steam generator 5.
  • the second feeder 54 may also be arranged so that further surfaces of the steam generator 5 adjacent to the bottom thereof are sprayed with the cleaning fluid 39.
  • surfaces of a heating device 57 of the steam generator 5 could be sprayed with the cleaning fluid 39, which is pressurized by the pump 26, in addition to a chemical separation of impurities, in particular calcifications on surfaces of the steam generator 5, also a mechanical separation of these impurities to reach.
  • the second feed device 54 is formed so that an effective flushing out of existing on the bottom of the steam generator 5 impurities to a second fluid discharge device 59 is achieved.
  • the first Fluidab211 sexual 15 of the cooking chamber 3 is designed so that an existing in the same cleaning fluid flows independently through the fluid line 13 into the condenser 11.
  • the first fluid discharge device 15 is in operative connection with a third circulation device, with which the cleaning fluid present in the cooking chamber 3 can be pumped into the fluid line 13.
  • a circulation device, fourth circulation device in the form of a pump 35, which is connected to the second fluid discharge device 59.
  • the pump 35 may, for example, the second existing in the steam generator 5 cleaning fluid 39 via a fluid line 41 and a vent pipe 61 to the capacitor 11, where it is z. B.
  • the pump 35 can dilute the first cleaning fluid 21.
  • the pump 35 is achieved in particular that in the region of the bottom of the steam generator 5 in the second cleaning fluid 39, a flow is generated which causes entrained at the bottom of the steam generator 5 lime deposits and pumped out of the steam generator 5 through the pump 35, so to speak
  • the second Fluidzu slaughter 9 is also connected to the condenser 11 via a fluid line 30 and the pump 25 or the vent tube 61, a mixture of the first cleaning fluid 21 and the second cleaning fluid 39 from the steam generator 5 into the condenser 11 via the pump 35 and from there via the pump 25 into the cooking chamber 3 and / or via the pump 26 back into the steam generator 5 arrive.
  • the fluid line 30 constitutes a bypass.
  • valves 27 and 53 are still a valve 51 between the device port 47 and a first feeder 56 for fresh water in the cooking chamber 3 and a valve 55 between the device port 47 and a third feeder 52 for fresh water in the condenser 11, via a third fluid supply line 45.
  • the pumps 25, 26 and 35, the shut-off devices 27, 51, 53 and 55, the heaters 10, 57, the blower device 10 and the sensors 2, 4, 8 and 12 are all with a Not shown control device of the cooking appliance 1 connected to, for example, a cleaning process to perform as follows:
  • water present in the steam generator 5 for producing steam during a cooking process can be conveyed via the pump 35 through the fluid line 41 into the drain 19, through the condenser 11.
  • the water may pass through the pump 26 passing the backflow preventer 63 to protect the appliance port 47 and the fluid line 30 via the pump 25 into the drain 19 arrive at open valve 27.
  • the pump 25 thus supports this removal of lime and can even cause a crushing of the same.
  • the second cleaning fluid 21 can be supplied to the condenser 11, for example in the form of citric acid, in order then to reach the condenser 11 via the pumps 25 and 26 into the steam generator 5 and from there via the pump 35.
  • the first cleaning fluid 21 can then be diluted with water from the appliance connection 47, for example via the third feed device 52, which is preferably in the form of a nozzle, in order then to effect a rinsing of the steam generator 5.
  • the diluted cleaning fluid 21 can be circulated through the cooking chamber 3 via the pump 25, namely from the condenser 11 via a fluid line 29 and the fluid supply device 7 into the cooking chamber 3 and from there via the fluid line 13 back into the condenser.
  • FIG. 2 the schematic structure of a second cooking appliance 101 according to the invention in the form of a combi steamer is shown, wherein the components of the cooking appliance 101, those of the cooking appliance 1 of FIG. 1 have correlating reference numerals by adding the number 100.
  • the cooking appliance 101 comprises a first interior in the form of a cooking chamber 103 and a steam generator 105.
  • the steam generator 105 In the cooking mode, the steam generator 105 generates steam, which is supplied to the cooking chamber 103 via a steam pipe 106.
  • the cooking chamber 103 has a first fluid supply device 107 and the steam generator 105 has a second fluid supply device 109.
  • the cooking appliance 101 has a capacitor 111.
  • the condenser 111 is connected via a fluid line 113 to a first fluid discharge device 115 of the cooking chamber 103.
  • the condenser 111 has a drain 116, an overflow 117 and a siphon 118, which are connected to a drain 119 of the cooking appliance 101.
  • a fluid 121 collected within the condenser 111 forms a fluid reservoir, which causes substances which are lighter than the fluid 121 to flow directly into the outflow 119.
  • a dirt-driven pump 125 and a valve 127 are still arranged.
  • the drain 116 and the pump 125 make it possible for the fluid 121 present in the condenser 111 to be supplied to the cooking chamber 103 via a line 129 and the first fluid feed device 107.
  • a fluid present in the cooking chamber 103 can flow back into the condenser 111 via the first fluid discharge device 115 and the fluid line 113. In this way, a first circulation circuit is formed.
  • a first multi-way valve in the form of a three-way valve 131 is further arranged.
  • a first terminal of the three-way valve 131 is thus connected to the capacitor 111, while a second terminal is connected via the line 129 to the fluid supply 107.
  • a third port of the three-way valve 131 is also connected via a line 133 to the steam generator 105, namely the fluid discharge 159 with the interposition of a pump 135, and the drain 19, via a second three-way valve 137 and a fluid line 143.
  • the second fluid supply device 109 and the second fluid discharge device 159 are formed in one.
  • the three-way valves 131 and 137 open up the possibility of different fluid circulation or circulating circuits in the cooking appliance 101, namely between the cooking chamber 103, the steam generator 105 and the condenser 111, since they are each arranged between these three components.
  • the second three-way valve 137 is connected via a line 141 the condenser 111, the line 143 with the drain 119 and the pump 135 connected to the steam generator 105.
  • Fresh water from a device port 147 can be supplied to the cooking device 101 directly via a valve 153 and a second feeder 154, in the steam generator 105. Furthermore, there is a connection, not shown, between the device port 147 and a Fluidzu meltschreib 149, via the interposition of a Valve 151 fresh water via a first feeder 156 can enter the oven 103. Also, a third Fluidzufilm Gustav 145 is connected to the device port 147 via a line, not shown, so that with the interposition of a valve 155 fresh water can enter a third feeder 152 for the capacitor 111.
  • the condenser 111 further opens a vent pipe 161, which is also connected to the line 129, so opened a further connection between the cooking chamber 103 and the capacitor 111.
  • a first cleaning fluid is used in a first cleaning phase.
  • the first cleaning phase may in particular be a rinsing phase for rinsing the cooking chamber 103.
  • This first cleaning fluid can on the one hand be held in a first collecting container (not shown) within the cooking appliance 101 and fed to the cooking chamber 103 or the condenser 111 via a metering device (not shown).
  • a metering device not shown.
  • it is preferred to produce the first cleaning fluid 101 in that a user introduces a not shown first cleaning substance, in particular in Tab form, into the cooking chamber 103.
  • This first cleaning substance is then dissolved in a second cleaning fluid, in particular water.
  • This second cleaning fluid can be supplied to the cooking chamber 103, for example by opening the valve 151 via the fluid supply line 149.
  • the second cleaning fluid is first supplied to the steam generator 105 via the appliance connection 147 by opening the valve 153.
  • the cooking appliance 101 is shown in the state in which the second cleaning fluid 139 in the form of water has already been supplied to the steam generator 105.
  • the fluid 139 present in the steam generator 105 can then be heated via a heating device 157 and then fed via the pump 135, the three-way valve 137 and the fluid line 141 to the condenser 111.
  • the pump 125 the heated water 139 is subsequently supplied to the cooking chamber 103 via the three-way valve 131 and the fluid line 129 as well as the first fluid feed device 107.
  • the first cleaning substance present in the cooking chamber 103 is dissolved and the first cleaning fluid 121 is produced.
  • the first cleaning fluid 121 then flows via the first fluid discharge device 115 and the fluid line 113 into the condenser 111 to be recirculated therefrom via the drain 116 through the pump 125 and the three-way valves 137, 131 through the cooking chamber 103.
  • the first cleaning phase is completed by the further circulation of the first cleaning fluid 121 through the cooking chamber 103.
  • first cleaning fluid 121 After completion of the circulation of the first cleaning fluid 121 through the cooking chamber 103 is then collected according to the invention in a second cleaning phase in the condenser 111 collected first cleaning fluid 121, which now represents a wash liquor due to the inclusion of dirt from the oven 103, by adjusting the three-way valves 131, 137 passed by means of the pumps 125, 135 in the steam generator 105.
  • the first cleaning fluid 121 comprises, in particular, citric acid, which causes limescale residues present in the steam generator 105 to be removed.
  • the first cleaning fluid 121 is left in the steam generator 105 for a predetermined time, in particular heated by the heater 157 in order to achieve an optimum reaction rate of the acid present in the first cleaning fluid 121 with the lime.
  • the residence time can be adapted to the water hardness and the degree of calcination of the steam generator 105.
  • the first cleaning fluid 121 is removed by re-adjusting the three-way valves 131, 137 via the pump 135 and the fluid line 143 directly through the drain 119.
  • the direct connection of the steam generator 105 with the drain 119 causes when emptying the steam generator 105 in the steam generator 105 existing substances, such as chipped limescale, not through the condenser 111 must flow into the drain 119, but can be introduced directly into this. Thus, such substances can not be deposited in the capacitor 111.
  • fresh water may optionally be supplied to the steam generator 105 for rinsing via the appliance connection 147 and the valve 153, which is likewise supplied to the drain 119 via the pump 135.
  • the second cleaning phase is carried out after the first cleaning phase.
  • the second cleaning phase i. H. the supply of the first cleaning fluid into the steam generator 105
  • at least part of the circulated first cleaning fluid must be conducted partially into the steam generator. This takes place, in particular, as a function of a fluid level within the condenser measured by means of a fill level sensor (not shown).
  • the first cleaning fluid can be supplied to the steam generator when the level within the condenser is so high that the first cleaning fluid could flow into the drain via the overflow.
  • the first cleaning substance can be metered so that the first cleaning fluid has a comparatively high concentration of lime-dissolving substances.
  • the cleaning fluid collected in the condenser has a relatively high concentration.
  • only a relatively small amount of water heated by the steam generator is necessary for the dissolution of the first cleaning substance.
  • a portion of the first cleaning fluid present in the condenser is passed into the steam generator, where it is diluted by supplying further water so that the level within the steam generator 105 corresponds to that in a steam generation by means of the steam generator, but without significantly affect the descaling properties of the first cleaning fluid.
  • a decalcification of the steam generator is achieved at the places where lime deposits form during a normal cooking operation.
  • the remaining, in the condenser collected first cleaning fluid are then diluted so that the maximum level is reached within the condenser and the thus diluted first cleaning fluid can be circulated as a rinse solution through the cooking chamber.
  • This method has the advantage that the period of circulation of the first cleaning fluid through the cooking chamber can be used substantially completely for a decalcification of the steam generator, so that no additional downtime arise.
  • the structure of the cooking appliance according to the invention has the advantage that the existing circulation circulations in the case in which a descaling of the steam generator by means of a first cleaning substance, such as a higher concentrated acid, necessary, this first cleaning substance are introduced directly into the fluid discharge of the cooking chamber can be pumped from there via the condenser in the steam generator.
  • a cumbersome or dangerous under certain circumstances filling this first cleaning substance, for example.
  • about the steam nozzle omitted since this first cleaning substance is pumpable into the steam generator.
  • the cooking appliance 101 also offers the possibility of carrying out a method according to the invention.
  • this method according to the invention essentially the second cleaning phase described above is carried out prior to the first cleaning phase.
  • a first cleaning fluid containing a, in particular highly concentrated, descaling agent, such as citric acid or phosphoric acid is supplied. This can be achieved by first producing the first cleaning fluid in the condenser 111 as described above.
  • the first cleaning fluid 121 is supplied via the pumps 125, 135 through a suitable adjustment of the three-way valves 131, 137 via the fluid line 143 of the fluid supply device 159 and thus the steam generator 105.
  • the first cleaning fluid 121 is supplied by means of the pump 125 and / or by means of the pump 135 under high pressure, so that in the steam generator 105 existing lime deposits are already mechanically removed by spraying the affected surfaces.
  • the first cleaning fluid 121 then effects a chemical cleaning or descaling of the surfaces of the steam generator 105, in particular of the surfaces of the heating device 157.
  • a cleaning of the cooking chamber 103 of the cooking appliance 101 can be performed, namely by appropriate settings of the three-way valves 131, 137 and pumps 125, 135, whereby the service life of the cooking appliance 101 for cleaning significantly can be reduced.
  • the first cleaning fluid 121 present in the steam generator 105 can be used as a rinse solution for a final rinse of the cooking chamber 103.
  • first fresh water in the steam generator 105 is introduced via the feeder 154, in order to achieve a dilution of the present in the steam generator 105 descaling agent.
  • the descaling agent is supplied via the pump 135 by suitable adjustment of the multi-way valve 131 via the line 129 of the fluid supply device 107 and thus the cooking chamber 103. Subsequently, the clear rinse liquor thus formed can be circulated through the cooking chamber 103 by means of the above-described circulation cycle and finally be discharged from the cooking appliance 101 via the drain 119.
  • the circulation of the rinse liquor through the cooking chamber 103 represents a first cleaning phase.
  • FIG. 3 a third embodiment of a cooking device 101 i according to the invention is shown.
  • the elements of the cooking appliance 101 i which functionally those of the cooking appliance 101 of FIG. 2 correspond, bear the same reference numerals, however, indicated by a superscript "i".
  • the cooking appliance 101 shown in the cooking appliance 101 i in the steam generator 105 i the fluid discharge 159 i provided opposite the fluid supply 109 i , wherein the fluid supply 109 i in turn with the device port 147 i via a line 149 i and a valve 153 i and with the cooking chamber 103 i via a line 133 i and finally with the vent pipe 161 i with the interposition of the backflow 163 i is connected.
  • the pump 135 i is accordingly only in communication with the fluid discharge device 159 i .
  • the pump 135 i is connected to the condenser 111 i via a fluid line 141 i and the vent pipe 161 i .
  • the cooking appliance 101 i enables a substantially continuous circulation of the first cleaning fluid 121 i through the steam generator 105 i parallel to a circulation of the first cleaning fluid through the cooking chamber 103 i takes place.
  • the first cleaning fluid is supplied via the pump 121 i 125 i serving as a first and second circulating means, and the line 129 to the three-way valve 131 i i.
  • the three-way valve 131 i By appropriate adjustment of the three-way valve 131 i , at least a portion of the first cleaning fluid 121 i can be supplied via the fluid line 133 i to the second fluid feeder 109 i and thus to the steam generator 105 i .
  • the remaining part of the first cleaning fluid 121 i is fed to the cooking space 103 i via the first feed device 107 i .
  • the i existing in the cavity 103 first cleaning fluid can then 113 i running in the capacitor 111 i via the first Fluidabloom adopted 115 i, and the fluid line, whereas in the steam generator 105 i existing first cleaning fluid 121 i by the pump 135 i via the Fluidab technically adopted 159 i and the fluid line 141 i i after passing through the vent tube 161 i the capacitor 111 i is supplied.
  • a bypass 130 i is provided, between the vent pipe 161 i and the capacitor 111 i .
  • the first cleaning fluid 121 i is first accumulated in the steam generator 105 i .
  • This is done, for example, characterized in that the pump 135 i is initially switched off or at least reduce its pumping power.
  • all areas of the steam generator 105 i on which calcareous deposits form, can be decalcified by means of the first cleaning fluid 121 i .
  • the first cleaning fluid present in the cooking chamber 103 i can then be introduced into the condenser via the first fluid discharge device 115 i and the fluid line 113 i 111 i run back, whereas in the steam generator 105 i existing first cleaning fluid by means of the pump 135 i via the fluid discharge 159 i and the fluid line 141 i via the vent pipe 161 i the capacitor 111 i i is supplied.
  • a second cleaning phase in which a first cleaning fluid in the form of a descaling agent is first supplied to the steam generator 105 i for descaling and this descaling agent, in particular after dilution, in a temporally subsequent first cleaning phase the cooking chamber 103 i , in particular as a rinse aid, can be supplied or circulated through it.
  • a descaling agent introduced into the steam generator 105 i can first be diluted.
  • the decalcifying agent supplied to the steam generator 105 i in the second cleaning phase is then supplied via the pump 125 i and the fluid supply means 107 i to the cooking chamber 103 i as rinse aid, the rinse aid preferably being washed several times through the cooking chamber 103 i in FIG this first cleaning phase, which takes place after the second cleaning phase, is circulated.
  • FIG. 4 a fourth embodiment of a cooking appliance 101 ii according to the invention is shown.
  • the individual elements of the cooking appliance 101 ii which correspond to those of the cooking appliance 101 i of Figure 3, carry the same reference numerals, but with two superscript "i" s.
  • the cooking appliance 101 ii the reflux fuse 163 ii offset.
  • this backflow preventer still causes, in the case where the steam generator 105 "is overfilled with a fluid, excess fluid to the vent pipe 161 ii and thus the condenser 111 ii is supplied, where it over the overflow 117 ii in the drain 119 ii flows, and does not get back to the device connection 147 ii , which could lead to contamination of water in a domestic water installation, not shown.
  • FIG. 5 is a fifth embodiment of a erfindunumbleen cooking appliance 101 to see iii .
  • the individual elements of the cooking appliance 101 iii those of the in FIG. 4 101 correspond ii cooking appliance illustrated bear the same reference numerals, but with three superscript "i" s.
  • a separate purge of the pump 135 iii can be carried out independently of a cleaning of the steam generator 105 iii by iii iii existing fresh water in the condenser III iii via the pump 125 iii , the rotary valve 131 iii , the fluid line 133 iii directly to the pump 135 iii can be supplied to be fed from there via the fluid line 141 iii and the vent pipe 161 iii back to the condenser 111 iii .
  • FIG. 6 is a sixth embodiment of a erfindunecuringen cooking appliance 101 iv illustrated.
  • the structure of the cooking appliance 101 iv substantially corresponds to that of the in FIG. 5 illustrated cooking appliance 101 iii , so that the same reference numerals are used, however, characterized by a superscript of "iv".
  • Only the course of the fluid line 133 iv is changed.
  • the fluid line 133 iv leads now by the rotary directional control valve 131 iv directly to the feeder 154 iv.
  • a better flushing of existing on the bottom of the steam generator 105 iv limescale is achieved.
  • FIG. 7 shows a seventh embodiment of a erfindunmultien cooking appliance 101 v shown.
  • the elements corresponding to those of FIG. 6 101 correspond iv cooking appliance illustrated bear the same reference numerals, however, by high position of "v" in.
  • the cooking appliance 101 v has a further circulating device in the form of a pump 126 v , similar to the cooking appliance 1 of FIG FIG.
  • the high pressure steam generator 105 can be supplied to v v via the pump 125, but also a supplied via the fluid line 149 v cleaning fluid in the form of fresh water from the cooking appliance port 147 v is supplied via the pump 126 v under high pressure. This leads to an improved mechanical cleaning of the steam generator 105 v, in particular by an efficient flushing of lime deposits present on the bottom of the steam generator 105 v .
  • FIG. 8 an eighth embodiment of a erfindunlicen cooking appliance 101 vi is shown, in which the same reference numerals as in FIGS. 2 to 7 but marked with a superscript "vi".
  • This cooking device 101 vi is substantially different from that in FIG. 7 shown cooking appliance 101 v in that the course of the fluid line 133 vi was changed.
  • the fluid line 133 vi opens from the three-way valve 131 vi directly into the steam generator 105 iv , there in the upper area.
  • the fluid line 133 iv is connected to a preferably removable, not shown feeding so that a via the fluid line 133 iv the steam generator 105 iv supplied fluid on at least one surface of the steam generator 105 iv , in particular a surface of the heater 157 iv is sprayed to achieve mechanical detachment of limescale present in the steam generator 105 iv .
  • FIG. 9 a ninth embodiment of a cooking appliance 201 according to the invention is shown as a schematic representation.
  • the cooking device 201 is also designed as a combi steamer. Furthermore, the components of the cooking device 201, those of the cooking device 1 of FIG. 1 provided with correlating reference numerals, however, the reference numerals are increased by 200.
  • the cooking appliance 201 comprises a first interior in the form of a cooking chamber 203 and a steam generator 205.
  • the steam generator 205 In a cooking mode, the steam generator 205 generates steam, which can be supplied to the cooking chamber 203 via a steam pipe 206.
  • the cooking chamber 203 has a first fluid supply device 207.
  • the steam generator 205 has a second fluid supply device 209.
  • the second fluid supply 209 allows, as will be explained in more detail later, that a boiler 210 of the steam generator 205, wherein the boiler 210 is a second interior of the cooking appliance 201, a first cleaning fluid can be supplied.
  • the cooking appliance 201 has a condenser 211, which has a second collecting container represents, on.
  • the condenser 211 is connected via a fluid line 213 to a first fluid discharge device 215 of the cooking chamber 203. Furthermore, the condenser 211 has a drain 216, an overflow 217 and a siphon 218. Both the drain 216 and the overflow 217 and the siphon 218 are connected to a drain 219 of the cooking appliance 201. In fluid communication with the drain 216 are a dirt-driven pump 225, which is a first and fifth circulation means, and a valve in the form of a ball valve 227, which is a first and second multi-way valve.
  • the drain 216, the ball valve 227 and the pump 225 allow fluid 221 present in the condenser 211 to be supplied to the cooking chamber 203 via a conduit 229 and the first fluid supply means 207.
  • a fluid present in the cooking chamber 203 can flow back into the condenser 211 via the first fluid discharge device 215 and the fluid line 213. This allows a recirculation loop to be formed for a first cleaning phase.
  • the boiler 210 of the steam generator 205 has a second fluid discharge device 259, which is connected via a pump 235, which serves for emptying the boiler 210 and represents a fourth and eighth circulation means, and a fluid line 241 with a vent tube 261 of the capacitor 211.
  • the individual elements of the cooking appliance 201 can be supplied fresh water from a device port 247 in various ways.
  • the steam generator 205 via a valve 253 and a second feeder 254 fresh water 263, in particular for steam generation, are supplied.
  • the device port 247 is connected via a line not shown with a third fluid supply 245, which allows the supply of fresh water via a third supply means in the form of a Ablöschdüse 252 for the condenser 211 via a valve 255.
  • the cooking appliance 201 has a first mixing container in the form of a care agent or rinse aid drawer 267 and a second mixing container in the form of a detergent drawer 265.
  • the cleaner drawer 265 is connected to the condenser 211 via a pump 269, which constitutes a tenth circulating device, and a fluid line 271.
  • a cleaning agent 273 which is a second cleaning substance, are arranged.
  • a rinse aid 275 can be arranged.
  • the care agent drawer 267 is connected to the second fluid supply device 209 via a pump 277, which constitutes a second circulation device, and a fluid line 279.
  • the detergent drawer 265 can be supplied with fresh water via a fluid line 281, which is connected via a valve 283 to the appliance connection 247.
  • the care agent drawer 267 can be supplied via a fluid line 285 and a valve 287 fresh water from the device port 247.
  • a first sensor in the form of a level electrode 204 is arranged in the boiler 210.
  • the cooking appliance 201 in contrast to the cooking appliances previously shown, another component in the form of a door drip tray 289, which is connected via a fluid line 291 to the drain 219 on.
  • the Schotropfwanne 289 is disposed in the region of a cooking chamber door of the cooking device 201, not shown, and serves to collect condensation, which can collect on the inside of the cooking chamber door, and fed to the drain 219.
  • FIGS. 10a to 10q Based on FIGS. 10a to 10q the implementation of a cleaning method according to the invention in the cooking appliance 201 will be explained below.
  • a rinsing liquid is supplied to the cooking chamber 203 in a first cleaning phase, which is supplied to the boiler 210 of the steam generator 205 as descaling liquid in a second cleaning phase, wherein both the final rinse liquid and the decalcifying liquid are formed as the first cleaning fluid, the following third cleaning phases are performed first ,
  • a fourth cleaning fluid in the form of fresh water is supplied to the condenser 211.
  • This phase of cleaning is in FIG. 10a shown. If a predetermined level is reached in the condenser 211, the pump 225 is started and, by a suitable adjustment of the ball valve 227, the fourth cleaning fluid present in the condenser 211 is supplied to the cooking chamber 203 via the fluid line 229 and the fluid supply device 207. The fourth cleaning fluid entering the cooking chamber 203 flows via the Fluidabloom owned 215 and the fluid line 213 again in the condenser 211 to be circulated again through the cooking chamber 203.
  • This revolution is in FIG. 10b and leads to a pre-rinsing phase, which serves to flush out the coarsest dirt and fats and oils from the cooking chamber 203 and to soften encrustations in the cooking chamber 203.
  • This pre-purging is supported by the fact that the steam generator 205 is put into operation and the cooking chamber 203 via the steam pipe 206 as the sixth cleaning fluid steam is supplied by heating the fresh water 263.
  • this pre-rinse phase which represents a first third cleaning phase, is completed, the fourth cleaning fluid collected in the condenser 211 is discharged above the ball valve 227 into the drain 219.
  • the state after draining is in FIG. 10c shown.
  • a new fourth cleaning fluid is then formed by supplying the cleaning drawer 265 with a fifth cleaning fluid in the form of fresh water via the fluid line 281.
  • the fresh water is distributed so that the detergent 273, which is supplied in particular in tab form the detergent drawer 265 before performing a cleaning of the cooking appliance, dissolves.
  • the fourth cleaning fluid thus formed is supplied to the condenser 211. In this way, a cleaner solution is flushed into the condenser 211.
  • the cleaning solution is used in particular for the chemical solution of contamination present in the cooking chamber 203, such as cooking residues.
  • the fourth cleaning fluid present in the condenser 211 is supplied to the cooking chamber 203 via the fluid line 229 and the fluid feed device 207 in order to carry out this second third cleaning phase. Also during this phase of the cleaning of the steam generator 205 is operated such that the cooking chamber 203 additionally steam is supplied via the steam pipe 206 to enhance the cleaning effect of the cleaning solution. Is by the circulation of this fourth cleaning fluid through the cooking chamber 203, a sufficient cleaning of the cooking chamber 203 has been achieved, the existing in the condenser 211 cleaning fluid is again on the Outflow 219 discharged. Subsequently, the detergent drawer 265 is again supplied fresh water to perform a third third cleaning phase.
  • the second cleaning phase is initially carried out, ie, a second cleaning fluid is supplied to the second interior in the form of the boiler 210.
  • a first cleaning fluid in the Boiler 210 is routed.
  • fresh water is introduced into the care agent drawer 267.
  • the rinse aid 275 is thus sprayed with a second cleaning fluid in the form of the fresh water, and the rinse aid 275, which is a first cleaning substance, is dissolved to form the first cleaning fluid.
  • the first cleaning fluid thus formed is supplied via the second circulation device in the form of the pump 277 and the fluid line 279 to the second fluid supply device 209 of the steam generator 205.
  • the second cleaning phase is thus carried out before the first cleaning phase, in which the first cleaning fluid in the form of the clear rinse solution is supplied to the cooking chamber 203.
  • the level in the boiler 210th increased by supplying more fresh water via the feeder 254 in the steam generator 205. This takes place until a fourth threshold value of the fill level in the steam generator 205 is registered via the level electrode 204.
  • This filling of the steam generator 205 is in Figure 10g shown. This represents the steam generator 205 to the fresh water is a third cleaning fluid.
  • the pump 235 Upon reaching the fourth threshold, as in FIG. 10h shown, the pump 235 is set in operation, so that the existing in the steam generator 205 first cleaning fluid via the fluid line 241 and the vent pipe 261 is passed into the condenser 211.
  • This branching of a rinsing solution for the cooking chamber 203 from the steam generator 205 via the pump 235 initiates the first cleaning phase, ie the passage of the first cleaning fluid through the cooking chamber 203. In this second period of time, the second cleaning phase and the first cleaning phase take place parallel in time.
  • both the part of the first cleaning fluid 239 present in the steam generator 205 and the part of the first cleaning fluid 239 present in the condenser 211 are diluted by supplying a third cleaning fluid in the form of fresh water.
  • FIG. 10j the next stage of the cleaning process of the cooking device 201 is shown.
  • the pump 225 By the pump 225, the existing in the condenser 211 first cleaning fluid 239 is circulated through the cooking chamber 203. This leads to a decalcification and a gloss maintenance of the cooking chamber 203.
  • the cleaning fluid 239 present in the steam generator 205 is heated to 80.degree.
  • the first cleaning fluid present in the steam generator 205 is reheated to 80 ° C. and again supplied with fresh water to overcome any temperature stratification present. This injection is preferred a total of three times performed until the maximum level of the cleaning fluid 239 is reached in the steam generator 205.
  • the temperature in the steam generator 205 is kept constant at 80 ° C. and the descaling of the steam generator 205 is carried out.
  • the first cleaning fluid present in the condenser 211 is drained via the drain 219 and supplied to the condenser 211 either via the quenching nozzle 252 or via the detergent drawer 265, the pump 269 and the fluid line 271 fresh water. This fresh water supplied is guided by the pump 225 through the cooking chamber 203.
  • the steam generator 205 is rinsed with a third cleaning fluid in the form of fresh water. This serves, in particular, to remove residues of the first cleaning fluid and any calcareous residues present in the boiler 310 from the steam generator 205.
  • both the care agent drawer 267 is supplied via the fluid line 285 and the steam generator 205 via the feeder 254 fresh water.
  • the fresh water supplied into the care agent drawer 267 is supplied to the boiler 210 of the steam generator 205 via the pump 277 and the fluid line 279 and the fluid supply device 209.
  • the fresh water supplied to the steam generator 205 is supplied directly to the drain 219 of the cooking appliance 201 via the pump 235 and the condenser 211.
  • Fresh water is supplied to the steam generator 205 via the fluid supply device 209 from the care agent drawer 267 and this supplied fresh water is supplied via the pump 235, the line 241 and the vent tube 261 to the condenser 211 and from there to the drain 219.
  • the cooking chamber 203 is heated to about 90 ° C during this time via a heater, not shown, in order to achieve a drying of the cooking chamber 203.
  • the steam generator 205 is still supplied fresh water until about the level electrode 204, a predetermined level is reached, as in FIG. 10q is shown. While in FIG.
  • 10q phase shown is finally the temperature within the cooking chamber to a temperature of 170 ° C increased to perform a second sanitary drying.
  • the cooking appliance is again available for carrying out a cooking process and is cleaned as best as possible by the cleaning process described above, in particular the cooking chamber 203 is cleaned of impurities from previous cooking processes and the steam generator 205 decalcifies.
  • the cooking appliances 1, 101 i - 101 iv and 201 are not to be considered separately, but their structure can be combined with each other.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Commercial Cooking Devices (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cookers (AREA)
EP20070033600 2007-01-30 2007-12-28 Procédé de nettoyage d'un appareil de cuisson Active EP1953458B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08011832A EP1980792A3 (fr) 2007-01-30 2007-12-28 Procédé de nettoyage d'un appareil de cuisson et appareil de cuisson correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710005502 DE102007005502A1 (de) 2007-01-30 2007-01-30 Verfahren zur Reinigung eines Gargeräts und Gargerät hierfür

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP08011832A Division EP1980792A3 (fr) 2007-01-30 2007-12-28 Procédé de nettoyage d'un appareil de cuisson et appareil de cuisson correspondant
EP08011832.6 Division-Into 2008-07-01

Publications (2)

Publication Number Publication Date
EP1953458A1 true EP1953458A1 (fr) 2008-08-06
EP1953458B1 EP1953458B1 (fr) 2010-03-31

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EP08011832A Withdrawn EP1980792A3 (fr) 2007-01-30 2007-12-28 Procédé de nettoyage d'un appareil de cuisson et appareil de cuisson correspondant

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Cited By (10)

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EP2447612A1 (fr) * 2010-10-28 2012-05-02 Thirode Grandes Cuisines Poligny Procédé de nettoyage d'un four mixte
WO2013057209A1 (fr) * 2011-10-18 2013-04-25 Mkn Maschinenfabrik Kurt Neubauer Gmbh & Co. Appareil de cuisson pourvu d'une cuve et procédé de nettoyage de la cuve
EP2944881A1 (fr) * 2014-05-16 2015-11-18 Electrolux Appliances Aktiebolag Procédé de nettoyage d'un four à vapeur
DE202013012459U1 (de) 2012-02-02 2017-01-09 Convotherm-Elektrogeräte Gmbh Flexible Sequenzsteuerung für ein automatisches Reinigungssystem für eine Kochvorrichtung
DE102016206483A1 (de) 2016-04-18 2017-10-19 Convotherm Elektrogeräte GmbH Verfahren zum Feststellen einer Reinigungsnotwendigkeit und Qualitätsmanagement-Überwachungssystem eines gewerblichen Gargeräts, und gewerbliches Gargerät
EP3188624A4 (fr) * 2014-09-02 2018-05-30 B/E Aerospace, Inc. Systeme et procede d'injection de vapeur
KR101982609B1 (ko) * 2018-12-19 2019-05-27 주식회사 효신테크 오븐용 배수 모듈 및 이를 구비한 오븐
WO2021197797A1 (fr) * 2020-03-31 2021-10-07 BSH Hausgeräte GmbH Appareil ménager de traitement à la vapeur et procédé de nettoyage d'un vaporisateur
DE102022114269A1 (de) 2022-06-07 2023-12-07 Rational Aktiengesellschaft Gargerät mit einem Selbstreinigungssystem sowie ein Verfahren zum Ändern von Reinigungsparametern für das Gargerät
BE1029575B1 (de) * 2022-08-16 2024-03-11 Miele & Cie Verfahren zum Reinigen eines Garraums eines Gargeräts, vorzugweise eines Gargeräts mit Dampfunktion, besonders vorzugsweise eines Backofen-Dampfgarer-Kombigeräts

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DE102008025294B4 (de) 2008-05-27 2012-06-21 Rational Ag Verfahren zum Reinigen eines Garraums
US8193470B1 (en) * 2008-09-08 2012-06-05 Kfc Corporation Self-cleaning convection oven
DE102010039515A1 (de) 2010-08-19 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Dampfgargerätvorrichtung
DE102011010283A1 (de) * 2011-02-03 2012-08-09 i-clean Technologies GmbH Verfahren zur Reinigung eines Haushalts-Gargerätes
DE102014112144A1 (de) * 2014-08-25 2016-02-25 Rational Aktiengesellschaft Dampfgenerator, Gargerät sowie Verfahren zum Betreiben eines Dampfgenerators
DE102015120807A1 (de) * 2015-12-01 2017-06-01 Rational Aktiengesellschaft Gargerät
DE102017119750A1 (de) * 2017-08-29 2019-02-28 Rational Aktiengesellschaft Gargerät mit Reinigungsfunktion
DE102018202643A1 (de) * 2018-02-21 2019-09-19 Convotherm-Elektrogeräte Gmbh Gargerät sowie Verfahren zum Reinigen eines Garraums eines Gargeräts

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WO2002068876A1 (fr) 2001-02-26 2002-09-06 Rational Ag Dispositif et procede pour nettoyer un appareil de cuisson
EP1430823A1 (fr) 2002-12-19 2004-06-23 Convotherm Elektrogeräte GmbH Procédé et dispositif pour détartrer générateurs de vapeur pour appareils de cuisson
DE102004001220B3 (de) 2004-01-07 2005-03-24 Rational Ag Reinigungsanordnung für ein Gargerät und diese verwendendes Verfahren
DE102004012824A1 (de) 2003-11-13 2005-07-07 Rational Ag Befüllungs- und/oder Füllmengenüberwachungsverfahren in einem Gargerät und Gargerät mit Befüllungs- und/oder Füllmengenüberwachung
DE102006010460A1 (de) 2006-03-03 2007-09-06 Rational Ag Verfahren zur Reinigung eines Gargeräts und Gargerät

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US5279676A (en) 1991-04-01 1994-01-18 Delaware Capital Formation, Inc. Method for cleaning a boiler
US5631033A (en) 1995-11-16 1997-05-20 Kolvites; Albert Method of cooking food with steam
WO2002068876A1 (fr) 2001-02-26 2002-09-06 Rational Ag Dispositif et procede pour nettoyer un appareil de cuisson
EP1430823A1 (fr) 2002-12-19 2004-06-23 Convotherm Elektrogeräte GmbH Procédé et dispositif pour détartrer générateurs de vapeur pour appareils de cuisson
DE102004012824A1 (de) 2003-11-13 2005-07-07 Rational Ag Befüllungs- und/oder Füllmengenüberwachungsverfahren in einem Gargerät und Gargerät mit Befüllungs- und/oder Füllmengenüberwachung
DE102004001220B3 (de) 2004-01-07 2005-03-24 Rational Ag Reinigungsanordnung für ein Gargerät und diese verwendendes Verfahren
DE102006010460A1 (de) 2006-03-03 2007-09-06 Rational Ag Verfahren zur Reinigung eines Gargeräts und Gargerät
WO2007098732A2 (fr) * 2006-03-03 2007-09-07 Rational Ag Procédé de nettoyage d'un appareil de cuisson, et appareil de cuisson correspondant

Cited By (16)

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Publication number Priority date Publication date Assignee Title
FR2966912A1 (fr) * 2010-10-28 2012-05-04 Thirode Grandes Cuisines Poligny Procede de nettoyage d'un four mixte
EP2447612A1 (fr) * 2010-10-28 2012-05-02 Thirode Grandes Cuisines Poligny Procédé de nettoyage d'un four mixte
WO2013057209A1 (fr) * 2011-10-18 2013-04-25 Mkn Maschinenfabrik Kurt Neubauer Gmbh & Co. Appareil de cuisson pourvu d'une cuve et procédé de nettoyage de la cuve
US10589325B2 (en) 2011-10-18 2020-03-17 MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG Cooking appliance with a pan and a method for cleaning the pan
US9677769B2 (en) 2012-02-02 2017-06-13 Convotherm Elektrogeraete Gmbh Flexible sequence control and method for automated cleaning system of a cooking device
DE202013012459U1 (de) 2012-02-02 2017-01-09 Convotherm-Elektrogeräte Gmbh Flexible Sequenzsteuerung für ein automatisches Reinigungssystem für eine Kochvorrichtung
WO2015172909A1 (fr) * 2014-05-16 2015-11-19 Electrolux Appliances Aktiebolag Procédé de nettoyage de four à vapeur
US10184667B2 (en) 2014-05-16 2019-01-22 Electrolux Appliances Aktiebolag Steam oven cleaning method
EP2944881A1 (fr) * 2014-05-16 2015-11-18 Electrolux Appliances Aktiebolag Procédé de nettoyage d'un four à vapeur
EP3188624A4 (fr) * 2014-09-02 2018-05-30 B/E Aerospace, Inc. Systeme et procede d'injection de vapeur
DE102016206483A1 (de) 2016-04-18 2017-10-19 Convotherm Elektrogeräte GmbH Verfahren zum Feststellen einer Reinigungsnotwendigkeit und Qualitätsmanagement-Überwachungssystem eines gewerblichen Gargeräts, und gewerbliches Gargerät
WO2017182214A1 (fr) 2016-04-18 2017-10-26 Convotherm-Elektrogeräte Gmbh Procédé pour déterminer un impératif de nettoyage et système de gestion et de contrôle de la qualité d'un appareil de cuisson industriel et appareil de cuisson industriel associé
KR101982609B1 (ko) * 2018-12-19 2019-05-27 주식회사 효신테크 오븐용 배수 모듈 및 이를 구비한 오븐
WO2021197797A1 (fr) * 2020-03-31 2021-10-07 BSH Hausgeräte GmbH Appareil ménager de traitement à la vapeur et procédé de nettoyage d'un vaporisateur
DE102022114269A1 (de) 2022-06-07 2023-12-07 Rational Aktiengesellschaft Gargerät mit einem Selbstreinigungssystem sowie ein Verfahren zum Ändern von Reinigungsparametern für das Gargerät
BE1029575B1 (de) * 2022-08-16 2024-03-11 Miele & Cie Verfahren zum Reinigen eines Garraums eines Gargeräts, vorzugweise eines Gargeräts mit Dampfunktion, besonders vorzugsweise eines Backofen-Dampfgarer-Kombigeräts

Also Published As

Publication number Publication date
EP1953458B1 (fr) 2010-03-31
DE502007003296D1 (de) 2010-05-12
DE102007005502A1 (de) 2008-07-31
EP1980792A3 (fr) 2009-07-01
EP1980792A2 (fr) 2008-10-15

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