EP1156282B1 - Four de cuisson à dispositif de purge - Google Patents

Four de cuisson à dispositif de purge Download PDF

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Publication number
EP1156282B1
EP1156282B1 EP20010105066 EP01105066A EP1156282B1 EP 1156282 B1 EP1156282 B1 EP 1156282B1 EP 20010105066 EP20010105066 EP 20010105066 EP 01105066 A EP01105066 A EP 01105066A EP 1156282 B1 EP1156282 B1 EP 1156282B1
Authority
EP
European Patent Office
Prior art keywords
ventilation
intensity
oven
vent pipe
lower threshold
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.)
Expired - Lifetime
Application number
EP20010105066
Other languages
German (de)
English (en)
Other versions
EP1156282A1 (fr
Inventor
Reinhard Matzinger
Hans-Jörg Rohr
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.)
V-Zug AG
Original Assignee
V-Zug AG
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Filing date
Publication date
Application filed by V-Zug AG filed Critical V-Zug AG
Publication of EP1156282A1 publication Critical patent/EP1156282A1/fr
Application granted granted Critical
Publication of EP1156282B1 publication Critical patent/EP1156282B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • 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
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities

Definitions

  • the invention relates to a method and a device for controlling the ventilation of a Oven.
  • ovens with cooling fans equip, on the one hand, sensitive components, especially electronic controls and parts of the environment, Protect against overheating, and on the other hand, the cooking chamber free from excessive steam.
  • the latter should be under to prevent too much moisture in the Insulation of the cooking compartment penetrates or on the radiators, and especially on the viewing window, precipitates.
  • too high a vapor concentration in the cooking chamber, as well as the escape of steam to unwanted Preventing same be prevented.
  • the reference numeral 1 designates its outer casing and 2 the insulation of the cooking space.
  • the reference numeral 1 designates its outer casing and 2 the insulation of the cooking space.
  • In the upper part leads an obliquely attached Tube 3 with an inner diameter of a few mm through the insulation 2 to the outside.
  • the inclination of the pipe ensures that in the pipe condensing steam in the Backspace is returned and evaporated there.
  • a fan 4 arranged, which has an air flow in the direction of a the shutter mounted outlet opening B generated.
  • the air stream sweeps at a recessed in the wall 2 Vent A passing, whose cross-section preferably substantially larger than that of the tube 3, and tears, as indicated by the arrow F, through this opening air from the oven with.
  • the fan 4 is also the Venting the gap 10, for this purpose a or a plurality of inlet openings, such as those designated C, having.
  • the vent can A for example with a (not shown) be provided controllable slide.
  • a separate regulation the draft from the cooking chamber and that from the Gap can also be achieved through the use of two individually controllable fans are achieved, of which intended for the cooking chamber (in not shown Way) is advantageously mounted so that it directly air promotes through the vent opening A.
  • the fan 4 is driven by a motor 5, which via a line 6 from an outside of the cooking chamber attached, electronic fan control 7 is controlled.
  • electronic fan control 7 is controlled.
  • Two sensors 8 and 9 supply the controller 7 with signals which, at two represent environmental parameters measured at different locations.
  • the sensor 9 measures the temperature in the immediate Close to an electronic circuit 11, which controls essential functions of the furnace, and serves to the controller 7 in time for impending overheating the circuit 11 to send an alarm signal, to force the ventilation. Since not essential to the invention, should not this known function here will be described further. As mentioned above, can the vents of cooking space and space below Use of a single fan regulated separately either by appropriate dimensioning of the and discharge openings, or by attaching (not shown) adjustable sliders on one or more of these Openings. On the other hand, for this purpose too two individually controlled fans (not shown) are used whose operation can be coupled, for example, then both at maximum speed to operate if monitored in only one of the two Spaces a status parameter exceeds an alarm value.
  • the near the outer mouth of the pipe 3 attached probe 8 measures at least one physical Parameter of emerging from the tube, containing vapor Exhaust air.
  • This parameter may preferably the temperature, but also the vapor pressure, the conductivity or the humidity of the exhaust air, which is the choice partly based on availability and cost-effectiveness directed appropriate sensor.
  • the temperature sensor 8 and the fan controller 7 together so that high temperatures at the location of the sensor 8 an increased speed of the Cause fan 4 and vice versa.
  • controller 7 for security reasons usually set up to the fan 4 with the larger of the at the feelers 8 and 9 measured temperatures required speeds run allow. This per se known security measure should not be treated here, but it only with reference to FIG. 2, a preferred control of Fan 4 are described by the sensor 8, without to a possible influence of the sensor 9 on this To take control.
  • the time t is horizontal, plotted along the x-axis, and they are vertical the measured by the sensor 8 temperature T (solid Curve) respectively the instantaneous speed N of the Fan 4 (dashed curve) applied.
  • the Controller 7 is a lower threshold R and an upper one Threshold S of the sampled temperature set, the both may for example be between 40 ° and 70 ° C.
  • the course of the dashed speed curve is as follows by the temperature profile (fully extended Curve). At the beginning, the speed is zero, and the Temperature T is equal to the room temperature (time A). As soon as as a result of steam escaping from the cooking chamber through the pipe 3, the temperature T exceeds the upper threshold value S.
  • the dough no longer gives off moisture, and therefore no steam exits through the pipe 3, the temperature is longer under the lower threshold R at the sensor stay (from time I); then the speed after the Delay time ⁇ t from time J on gradually up to a predetermined minimum speed or until Standstill of the fan reduced.
  • the time interval progressive between successive stages shorten as long as the temperature is about either the upper threshold S or below the lower threshold Threshold R is.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Ovens (AREA)

Claims (6)

  1. Four comportant un dispositif (7) pour réguler la ventilation du four en fonction des variations de température d'un courant de gaz dû à la différence de pression entre l'intérieur et l'extérieur du four (12), et avec une ouverture d'évacuation (A), un canal de surpression (3) débouchant sur l'extérieur et un ventilateur d'évacuation (4) pour ventiler le four par évacuation à travers l'ouverture d'évacuation, ledit dispositif (7) commandant le ventilateur (4) en fonction de valeurs mesurées par un senseur de température (8) disposé à la sortie du canal de surpression.
  2. Four selon la revendication 1, caractérisé en ce que la section de l'ouverture d'évacuation (A) est au moins dix fois supérieure à la section du canal de surpression (3).
  3. Four selon une des revendications 1 ou 2, caractérisé en ce que la section du canal de surpression (3) est inférieure à 1 cm2 et que sa longueur excède le triple de sa plus grande extension transversale.
  4. Procédé pour la ventilation d'un four selon une des revendications 1 à 3, caractérisé en ce que l'on prédétermine une valeur-seuil inférieure (R) et une valeur-seuil supérieure (S) de la température mesurée; que l'on augmente l'intensité de la ventilation d'un certain montant lorsque le valeur-seuil supérieure est dépassée, et que l'on augmente ensuite successivement cette intensité jusqu'à atteinte d'une valeur maximale tant que la valeur mesurée excède la valeur-seuil supérieure (S); que l'on réduit l'intensité de la ventilation d'un certain montant lorsque la valeur mesurée passe sous la valeur-seuil inférieure (R) et ne redépasse pas cette valeur-seuil pendant un certain laps de temps (Δt), et que l'on réduit ensuite successivement cette intensité jusqu'à atteinte d'une valeur minimale tant que la valeur mesurée demeure inférieure à la valeur-seuil inférieure (R).
  5. Procédé selon la revendication 4, caractérisé en ce que l'intervalle de temps entre deux augmentations successives de l'intensité de la ventilation reste constant et inférieur à l'intervalle de temps entre deux réductions successives de cette intensité.
  6. Procédé selon la revendication 4, caractérisé en ce que les intervalles de temps entre deux augmentations et/ou deux réductions de l'intensité de la ventilation deviennent progressivement de plus en plus courts après une dépassement de la valeur-seuil supérieure (S), respectivement après un passage sous la valeur-seuil inférieure (R).
EP20010105066 2000-05-17 2001-03-02 Four de cuisson à dispositif de purge Expired - Lifetime EP1156282B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9962000 2000-05-17
CH9962000 2000-05-17

Publications (2)

Publication Number Publication Date
EP1156282A1 EP1156282A1 (fr) 2001-11-21
EP1156282B1 true EP1156282B1 (fr) 2005-11-16

Family

ID=4551884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010105066 Expired - Lifetime EP1156282B1 (fr) 2000-05-17 2001-03-02 Four de cuisson à dispositif de purge

Country Status (2)

Country Link
EP (1) EP1156282B1 (fr)
DE (1) DE50108057D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104026995A (zh) * 2013-03-07 2014-09-10 V-楚格股份公司 具有气候受控温度限制器的烤箱

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10161184A1 (de) * 2001-12-13 2003-07-10 Aeg Hausgeraete Gmbh Verfahren zum Betreiben eines Garofens sowie Garofen
DE60325324D1 (de) * 2003-03-12 2009-01-29 Whirlpool Co Verfahren zum Betrieb eines Haushaltsbackofens und Backofen mit einem Kühlgebläse
CH711637B1 (en) 2004-07-21 2017-04-13 V-Zug Ag Cooking appliance with controllable ventilation.
DE102005034303B4 (de) * 2005-07-22 2011-04-28 Electrolux Home Products Corporation N.V. Garofen
DE102006043933A1 (de) 2006-09-14 2008-04-03 Miele & Cie. Kg Verfahren zur Regelung des Abluftvolumenstromes aus einem Garraum eines Backofens
DE102006044039B3 (de) * 2006-09-14 2007-12-27 Miele & Cie. Kg Verfahren zur Regelung des Abluftvolumenstroms aus einem Garraum eines Backofens
DE102008012395A1 (de) * 2007-09-28 2009-04-23 Miwe Michael Wenz Gmbh Backofen mit Luftaustrittsöffnung
DE102008036684A1 (de) 2008-08-06 2010-02-11 Rational Ag Gargerät und Verfahren zum Überwachen eines Garprozesses
ITTO20090611A1 (it) * 2009-08-04 2011-02-05 Indesit Co Spa Metodo per controllare il funzionamento di un forno
DE102010036768A1 (de) * 2010-07-30 2012-02-02 Miele & Cie. Kg Gargerät
EP2798912B1 (fr) * 2011-12-26 2016-03-02 Arçelik Anonim Sirketi Four comprenant un ventilateur de refroidissement
FI125053B (fi) 2014-01-10 2015-05-15 Innohome Oy Menetelmä ja laite lieden turvallisen käytön valvomiseksi
DE102016119690B4 (de) * 2016-10-17 2020-01-23 Miwe Michael Wenz Gmbh Vorrichtung zur thermischen Behandlung von Lebensmitteln unter Einwirkung von Schwaden mit dynamischer Abluftregelung
WO2023234885A1 (fr) * 2022-06-03 2023-12-07 Femas Metal San. Ve Tic. A.S. Four à vapeur avec tuyau d'entrée d'eau

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8324514D0 (en) * 1983-09-13 1983-10-12 Baker Perkins Holdings Plc Tunnel ovens
DE8716911U1 (de) * 1987-12-23 1988-02-25 Bosch-Siemens Hausgeräte GmbH, 8000 München Backofen
FR2646365B1 (fr) * 1989-04-26 1992-04-17 Dietrich & Cie De Ensemble compose d'un circuit electrique pour hotte aspirante et d'un circuit electrique pour poste de cuisson

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104026995A (zh) * 2013-03-07 2014-09-10 V-楚格股份公司 具有气候受控温度限制器的烤箱

Also Published As

Publication number Publication date
DE50108057D1 (de) 2005-12-22
EP1156282A1 (fr) 2001-11-21

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