EP1162402A2 - Procédé de surveillance du fonctionnement d'un générateur de vapeur pour appareil de cuisson - Google Patents

Procédé de surveillance du fonctionnement d'un générateur de vapeur pour appareil de cuisson Download PDF

Info

Publication number
EP1162402A2
EP1162402A2 EP01113934A EP01113934A EP1162402A2 EP 1162402 A2 EP1162402 A2 EP 1162402A2 EP 01113934 A EP01113934 A EP 01113934A EP 01113934 A EP01113934 A EP 01113934A EP 1162402 A2 EP1162402 A2 EP 1162402A2
Authority
EP
European Patent Office
Prior art keywords
steam generator
water
fresh water
filling
operating parameter
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
EP01113934A
Other languages
German (de)
English (en)
Other versions
EP1162402B1 (fr
EP1162402A3 (fr
Inventor
Lutz Riefenstein
Werner Schwarzbaecker
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.)
Welbilt Deutschland GmbH
Original Assignee
Convotherm Elektrogeraete GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7645247&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1162402(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Convotherm Elektrogeraete GmbH filed Critical Convotherm Elektrogeraete GmbH
Publication of EP1162402A2 publication Critical patent/EP1162402A2/fr
Publication of EP1162402A3 publication Critical patent/EP1162402A3/fr
Application granted granted Critical
Publication of EP1162402B1 publication Critical patent/EP1162402B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/42—Applications, arrangements or dispositions of alarm or automatic safety devices

Definitions

  • the invention relates to a method for monitoring the operation of a steam generator for cooking appliances.
  • Cooking appliances in particular combi steamers, in which those to be prepared Food is cooked using steam and hot air, usually have a steam generator that the for the steaming process provides the necessary steam.
  • EP 0 383 327 A1 describes a steam generator for cooking devices known with a descaling device, in which in adjustable Intervals depending on the operating time and / or the temperature of the heating device automatically Flushing the steam generator and thus a discharge from accumulating on the bottom of the steam generator Lime dividing takes place. As a result, only those of the Removed limescale from walls or heating surfaces become. The flushing takes place in the immediate vicinity of the Bottom of the steam generator, whereby these sediment parts are discharged become.
  • the consequence of increased mineral concentrations in the water is not just the calcification of the steam generator, but also a failure of the level monitoring in the steam generator based on the electrical conductivity due to the entering Foaming because foam is also electrically conductive is.
  • the level electrodes can then no longer measure actual water level as a distinction not between foam and water through these electrodes is possible.
  • the level monitoring electrodes display a water level that is actually is absent, causing the water level to drop below Heating surfaces sink, causing the heating surfaces to overheat leads. In this state, the water stops when there is no water Boiling process, causing the foam to collapse again, and then the missing water report is often too late comes. Accordingly, such a process does not only lead to Damage to the steam generator and in particular its heating surfaces, but also to interrupt the cooking process due to lack of steam production.
  • a steam generator can solve the problems associated with the Foaming due to the high degree of hardness of the water related, not solve.
  • This known device thus does not take into account the hardness of the water or the degree of calcification of the steam generator, but removed only at adjustable intervals on the bottom of the steam generator accumulating, loose limescale.
  • the object of the invention is to demonstrate a method with whose help has the disadvantages of hard water, which are particularly related to foam formation, largely avoided, that is, the risk of calcification and a failure to report due to foaming counteracting overheating of the heating surfaces.
  • This object is achieved in that during the operation of the steam generator at least a substantial one Operating parameters of the same measured, the measured. Actual value compared with a target value and the result of the Comparison as a controlled variable or control variable for the remedy the cause of the deviation or for switching off the Steam generator is used and that the respective target value detected in an unaffected steam generator and is saved.
  • the respective target value for each operating parameter So with a new steam generator or with a carefully decalcified steam generator in the first undisturbed operating phase determined and serves thus as a comparison value for later measurements during the Operation of a steam generator.
  • control variable or control variable obtained is preferred for carrying out a water changer or a descaling process used.
  • the boiling temperature is another important operating parameter of water in the steam generator, from height above depends on the sea level, the filling time between those of the level monitoring devices specified low and flood levels of the steam generator, the filling time up to the maximum after complete emptying of the Steam generator and the rate of temperature change the water in the steam generator for a given heating output, that means with different heating outputs.
  • This list essential operating parameter is not conclusive, but only includes those who prefer the Implementation of the method according to the invention considered become. This when you start up a Steam generator measured and stored target values are later measured with the then measured Actual values compared. The result of this comparison represents a controlled variable or a control variable, which then the interventions in the operating procedure described below of a steam generator.
  • the safety when operating the steam generator is also at simple embodiment increased by the fact that a constant Period and an amount of water less than that amount of water evaporated during this period, for injecting or spraying water into the steam generator is set. This will cause foaming and at the same time avoid overfilling the steam generator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Cookers (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Commercial Cooking Devices (AREA)
EP01113934A 2000-06-09 2001-06-07 Procédé de surveillance du fonctionnement d'un générateur de vapeur pour appareil de cuisson Expired - Lifetime EP1162402B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10028595 2000-06-09
DE10028595A DE10028595B4 (de) 2000-06-09 2000-06-09 Verfahren zum Überwachen des Betriebes eines Dampferzeugers für Gargeräte

Publications (3)

Publication Number Publication Date
EP1162402A2 true EP1162402A2 (fr) 2001-12-12
EP1162402A3 EP1162402A3 (fr) 2003-08-13
EP1162402B1 EP1162402B1 (fr) 2007-06-06

Family

ID=7645247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01113934A Expired - Lifetime EP1162402B1 (fr) 2000-06-09 2001-06-07 Procédé de surveillance du fonctionnement d'un générateur de vapeur pour appareil de cuisson

Country Status (4)

Country Link
EP (1) EP1162402B1 (fr)
AT (1) ATE364156T1 (fr)
DE (2) DE10028595B4 (fr)
ES (1) ES2178617T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016757A1 (de) * 2006-04-10 2007-10-18 Rational Ag Verfahren zur Bestimmung einer charakteristischen Größe eines Fluids, Fluidaufnahmevorrichtung und Gargerät
US8025740B2 (en) 2006-01-30 2011-09-27 Rational Ag Process for conducting cleaning operations in a fluid-receiving device of a foodstuff-processing apparatus, and fluid-receiving device and foodstuff-processing apparatus therefor
CN105266576A (zh) * 2015-11-23 2016-01-27 珠海格力电器股份有限公司 一种确定沸点温度的方法、装置及电压力锅

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10259829B4 (de) * 2002-12-19 2005-10-06 Convotherm Elektrogeräte GmbH Verfahren zum Entkalken von Dampferzeugern für Gargeräte
DE102006004340A1 (de) * 2006-01-30 2007-08-09 Rational Ag Verfahren und Vorrichtung zur Erkennung einer Verkalkung eines Behälters, insbesondere eines Gargeräts
DE202008010308U1 (de) 2008-07-31 2008-11-20 Lechmetall Landsberg Gmbh Edelstahlerzeugnisse Entlüftungsrohr
DE102008056324B4 (de) * 2008-11-07 2016-07-07 Rational Ag Verfahren zur Nachbefüllung eines Dampfgenerators mit Wasser, Dampfgenerator dafür und Gargerät damit
DE102016100195A1 (de) 2016-01-06 2017-07-06 Miele & Cie. Kg Verfahren zur Härtebestimmung von Wasser in Wassererhitzungsgeräten, insbesondere in wasserführenden elektrischen Hausgeräten

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383327A1 (fr) 1989-02-17 1990-08-22 LechMetall Landsberg GmbH Edelstahlerzeugnisse Chaudière à vapeur avec détartrage pour appareil de cuisson

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1652399A1 (de) * 1967-11-15 1971-01-28 Hans Maile Fabrik Fuer Gasbren Vorrichtung zum Erwaermen und Aufkleben von Materialbahnen auf Unterlagen
GB1418994A (en) * 1973-02-16 1975-12-24 Easton Williams R H Electrode boiler with automatic control
CH563000A5 (fr) * 1973-03-09 1975-06-13 Plascon Ag
DE2652399A1 (de) * 1976-11-17 1978-05-18 Bosch Siemens Hausgeraete Elektrische kaffeemaschine
US4792660A (en) * 1986-03-21 1988-12-20 Carnes Company, Inc. Humidifier controller having automatic over-current correcting means
FR2625794B1 (fr) * 1988-01-08 1990-05-04 Bourgeois Ste Coop Production Generateur de vapeur d'eau pour appareil de cuisson
DE4218440A1 (de) * 1992-06-04 1993-12-09 Melitta Haushaltsprodukte Kaffee- oder Teemaschine mit einer Entkalkungsanzeigevorrichtung
DE9214577U1 (de) * 1992-10-28 1993-12-16 Mayer, Herbert, 87700 Memmingen Dampferzeuger
DE19912444C2 (de) * 1999-03-19 2001-11-29 Rational Ag Dampfgenerator eines Gargerätes mit einer Vorrichtung zur elektronischen Verkalkungsüberwachung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383327A1 (fr) 1989-02-17 1990-08-22 LechMetall Landsberg GmbH Edelstahlerzeugnisse Chaudière à vapeur avec détartrage pour appareil de cuisson

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8025740B2 (en) 2006-01-30 2011-09-27 Rational Ag Process for conducting cleaning operations in a fluid-receiving device of a foodstuff-processing apparatus, and fluid-receiving device and foodstuff-processing apparatus therefor
DE102006016757A1 (de) * 2006-04-10 2007-10-18 Rational Ag Verfahren zur Bestimmung einer charakteristischen Größe eines Fluids, Fluidaufnahmevorrichtung und Gargerät
DE102006016757B4 (de) * 2006-04-10 2016-06-23 Rational Ag Verfahren zur Bestimmung einer charakteristischen Größe eines Fluids, Fluidaufnahmevorrichtung und Gargerät
CN105266576A (zh) * 2015-11-23 2016-01-27 珠海格力电器股份有限公司 一种确定沸点温度的方法、装置及电压力锅
CN105266576B (zh) * 2015-11-23 2017-05-10 珠海格力电器股份有限公司 一种确定沸点温度的方法、装置及电压力锅

Also Published As

Publication number Publication date
DE50112586D1 (de) 2007-07-19
DE10028595A1 (de) 2002-01-03
DE10028595B4 (de) 2004-05-13
EP1162402B1 (fr) 2007-06-06
EP1162402A3 (fr) 2003-08-13
ATE364156T1 (de) 2007-06-15
ES2178617T1 (es) 2003-01-01
ES2178617T3 (es) 2007-12-16

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