EP0410174A2 - Moufle de four à nettoyage par pyrolyse - Google Patents

Moufle de four à nettoyage par pyrolyse Download PDF

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Publication number
EP0410174A2
EP0410174A2 EP19900112845 EP90112845A EP0410174A2 EP 0410174 A2 EP0410174 A2 EP 0410174A2 EP 19900112845 EP19900112845 EP 19900112845 EP 90112845 A EP90112845 A EP 90112845A EP 0410174 A2 EP0410174 A2 EP 0410174A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
heating
muffle
pyrolytic self
pyrolytic
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.)
Ceased
Application number
EP19900112845
Other languages
German (de)
English (en)
Other versions
EP0410174A3 (en
Inventor
Franz Dipl.-Ing. Röhrl (FH)
Josef Gerl
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0410174A2 publication Critical patent/EP0410174A2/fr
Publication of EP0410174A3 publication Critical patent/EP0410174A3/de
Ceased legal-status Critical Current

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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
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated
    • 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
    • F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type

Definitions

  • the invention relates to a method for pyrolytic self-cleaning in a stove, the muffle can be operated by a heating element arranged in a wall area and optionally with additional forced-air heating, the muffle being ventilated by a forced-air fan and equipped with means for pyrolytic self-cleaning.
  • a heating element arranged in a wall area and optionally with additional forced-air heating
  • the muffle being ventilated by a forced-air fan and equipped with means for pyrolytic self-cleaning.
  • DE-PS 21 66 227 and 23 10 290 hearth muffle with means for pyrolytic self-cleaning have become known. It is assumed that mean oven temperatures above 500 ° C must be used for pyrolytic self-cleaning and consequently precautions must be taken so that the switching - Control elements and other functional elements are not subject to overheating.
  • the object of the invention is to provide a stove with means for pyrolytic self-cleaning, as a result of which the oven top temperature is reduced, the CO development is reduced and the life of the enamel layer is increased.
  • the solution to this problem according to the invention is characterized in that the heating phase, which is operated at maximum output, ends the heating phase at approximately 500 ° C. and that the circulating air blower in combination with at least one heating element can then regulate a lower, uniform oven cleaning temperature required for the pyrolytic self-cleaning process is, the pyrolytic self-cleaning takes place at a cleaning temperature which is harmless to the enamel portions of the muffle and reduces carbon monoxide development.
  • FIGS. 1 and 2 a stove is shown according to the prior art.
  • the top heat 2 is realized by grill radiators. 2, the cooking space 1 with the grill heating elements 2 can be removed as a device for the top heat.
  • a baffle wall with suction opening 3 is arranged on the muffle rear wall for circulating air heating operation.
  • FIGS. 1 and 2 belong to the prior art and are intended to meet the requirements necessary for understanding the invention.
  • a certain minimum temperature is required during the cleaning process in order to achieve perfect cleaning of the dirty oven parts (eg inner surfaces of the oven muffle) in the known pyrolytic cleaning.
  • the process according to the invention for pyrolytic self-cleaning is initiated by a rapid heating phase which leads to approximately 500 ° C.
  • the heating-up phase therefore results in a rapid bridging of the CO evolution, which mainly takes place below 400 ° C. Flue gas development and CO development are thus minimized in the heating phase.
  • the end of the heating phase which is at a temperature of 500 ° C, the pyrolytic self-cleaning process begins, which is determined by the fact that the circulating air blower in combination with at least one heating element, e.g.
  • a lower, uniform oven cleaning temperature necessary for the pyrolytic self-cleaning process is adjustable.
  • the upper cleaning temperature does not exceed any temperature values which are harmful to the enamel content of the muffle, the pyrolytic self-cleaning process proceeding perfectly.
  • the carbon monoxide development is integrated and minimized through the self-cleaning process.
  • 3 shows how the circulating air affects the temperature profile in the furnace muffle during self-cleaning operation.
  • Curve 4.1 indicates the self-heating of the motor as a function of the operating voltage UBM.
  • Curve 4.2 shows the relationship that exists between the cooling of the motor by means of a cooling wing attached to the output shaft and the operating voltage of the motor. At the intersection of curves 4.1 and 4.2 there is an engine operating voltage UMO for which there is sufficient engine cooling with reasonable self-heating of the engine. The air recirculation motor is therefore operated with this operating point.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Baking, Grill, Roasting (AREA)
EP19900112845 1989-07-26 1990-07-05 Oven with pyrolytically cleaned muffle Ceased EP0410174A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893924782 DE3924782A1 (de) 1989-07-26 1989-07-26 Herd mit pyrolytischer selbstreinigung der muffel
DE3924782 1989-07-26

Publications (2)

Publication Number Publication Date
EP0410174A2 true EP0410174A2 (fr) 1991-01-30
EP0410174A3 EP0410174A3 (en) 1991-06-05

Family

ID=6385911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900112845 Ceased EP0410174A3 (en) 1989-07-26 1990-07-05 Oven with pyrolytically cleaned muffle

Country Status (3)

Country Link
EP (1) EP0410174A3 (fr)
DD (1) DD295705A5 (fr)
DE (1) DE3924782A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114909A1 (de) * 1991-05-07 1992-11-12 Bosch Siemens Hausgeraete Herd mit pyrolytischer selbstreinigung
DE4321952B4 (de) * 1993-07-01 2004-05-27 BSH Bosch und Siemens Hausgeräte GmbH Herd mit pyrolitischer Selbstreinigung
DE102020121587A1 (de) * 2020-08-18 2022-02-24 Miele & Cie. Kg Pyrolytische Reinigung eines Gargerätes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678245A (en) * 1968-06-21 1972-07-18 Siemens Elektrogeraete Gmbh Device for cleaning the walls of the muffle chamber of baking and roasting ovens
EP0031755A2 (fr) * 1979-12-27 1981-07-08 Etablissements Eugene Scholtes Four électrique de cuisson à usage ménager

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678245A (en) * 1968-06-21 1972-07-18 Siemens Elektrogeraete Gmbh Device for cleaning the walls of the muffle chamber of baking and roasting ovens
EP0031755A2 (fr) * 1979-12-27 1981-07-08 Etablissements Eugene Scholtes Four électrique de cuisson à usage ménager

Also Published As

Publication number Publication date
DE3924782A1 (de) 1991-01-31
EP0410174A3 (en) 1991-06-05
DD295705A5 (de) 1991-11-07

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