EP0504555A2 - Unité de cuisson avec un four obturable - Google Patents

Unité de cuisson avec un four obturable Download PDF

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Publication number
EP0504555A2
EP0504555A2 EP19920101075 EP92101075A EP0504555A2 EP 0504555 A2 EP0504555 A2 EP 0504555A2 EP 19920101075 EP19920101075 EP 19920101075 EP 92101075 A EP92101075 A EP 92101075A EP 0504555 A2 EP0504555 A2 EP 0504555A2
Authority
EP
European Patent Office
Prior art keywords
temperature
cooking
condensate trap
cooking device
control device
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
EP19920101075
Other languages
German (de)
English (en)
Other versions
EP0504555B1 (fr
EP0504555A3 (en
Inventor
Karlheinz Dipl.-Ing. Henry
Martin Dipl.-Ing. Thaler (Fh)
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 EP0504555A2 publication Critical patent/EP0504555A2/fr
Publication of EP0504555A3 publication Critical patent/EP0504555A3/de
Application granted granted Critical
Publication of EP0504555B1 publication Critical patent/EP0504555B1/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
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities
    • 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

Definitions

  • the invention relates to a cooking device with a lockable cooking space according to the preamble of claim 1.
  • a humidity sensor is provided for the regulation of the heating time, which is arranged in the flow path of the air flowing out of the cooking space to detect a change in moisture in the cooking space and which is directly connected to a heating control device Active connection is established.
  • the moisture values determined are used directly as a control variable for a heating control device.
  • Doped semiconductor ceramic bodies (DE-PS 30 34 070) or monocrystalline structures are used as moisture sensors, some of which have low cross-sensitivity and also detect gaseous components other than those to be determined in the vapor and thus supply unsafe measurement data.
  • the service life and robustness of such sensors is influenced by the chemical and physical environment and is reduced, for example, by pollution from fatty vapors. In addition, a physically given temperature sensitivity often limits the possible use in cooking facilities.
  • the invention has for its object to perfect the heating control by means of the evaporation in a cooking device of the type mentioned and to make it largely independent of environmental influences and of inadequacies present in known moisture sensors.
  • the invention enables a continuous and exact recording of the water vapor characterizing the respective cooking state in the exiting vapor by utilizing the respective caloric state variable "enthalpy" for controlling and regulating the cooking process.
  • the cooking device is optimized and sensitively controlled by varying the heat energy supplied to the food.
  • the device according to the invention is largely insensitive to contamination of the condensate trap, e.g. due to fat condensate, against sporadic temperature peaks, e.g. after pouring water over the food and against chemically aggressive media, ensuring that the current steam content is recorded quickly and with low inertia.
  • an oven muffle 2 is arranged in the interior of an oven housing 1 of the cooking device, which can be closed at the front by an oven door 3.
  • a heating device 5 only shown symbolically, for example in the form of a radiant heater, is arranged near the upper muffle boundary.
  • a flow duct 9 formed between the discharge duct 8 and the upper boundary of the furnace housing 1, on the rear side of which a cooling air blower 10 is arranged.
  • the direction of flow is illustrated by an arrow, the flow channel 9 being at least partially open at the front or a grid-like one there Has flow orifice.
  • a heat exchanger which has a condensate trap 12 projecting into the discharge channel 8 and which is explained in more detail below with reference to FIG. 2.
  • the heat exchanger 11 is designed as a heat pump in the form of a Peltier element, the cold side of which is represented by the condensate trap 12 is located in the area of the discharge duct 8 and the warm side of which is arranged in the flow duct 9.
  • the condensate trap 12 can be designed in the form of a low-mass metal plate or a low-mass metal lug.
  • the condensate trap 12 has a surface structure which only slightly impedes the air flow within the discharge duct 8, preferably a lattice-like or perforated pattern.
  • the warm side consists of a lamellar heat sink 14, which, like the condensate trap 12, is in direct connection with the Peltier element 15.
  • a first temperature sensor 16 which is in operative connection with a, is arranged on the condensate trap 12 outside the discharge duct 8 in a good heat-conducting connection Control device 13.
  • a second temperature sensor 17 is arranged freely in the discharge channel 8 and is also in operative connection with the control device 13.
  • the first temperature sensor itself is designed as a condensate trap, preferably in the form of a platinum arranged on a ceramic plate. Sensor element.
  • the mode of operation of the control device and of the heat exchanger 11 that is operatively connected to it is explained below:
  • the temperature in the cooking space 4 increases, for example in accordance with the temperature curve ta in FIG. 3, over time T.
  • the temperature ta increases from a rest temperature ta 1, for example 20 ° C, corresponding to the selected heating power to a heating temperature ta 2 and from there runs in a wave shape according to the control cycle of the heating device 5.
  • the curve tb illustrates the course of the temperature, which is measured by the temperature sensor 16 on the condensate trap 12.
  • This temperature tb is intended to be kept constant by the control device 13 with the aid of the heat exchanger 11 or the heat pump, regardless of the temperature of the uncondensed heated exhaust air which flows through the discharge duct 8 from the cooking chamber 4 (arrow).
  • This is based on the knowledge that the exhaust air heated during cooking operation of the cooking device without substantial moisture content ("dry vapors") also leads to an increase in temperature at the condensate trap 12.
  • the device described determines the steam content, ie the humidity of the exhaust air, and uses it indirectly to control the heating device 5, it is intended to determine the energy required to keep the temperature at the condensate trap 12 constant, and thus to continuously condense it, as Response to the additional heat energy acting on the condensate trap 12 due to this condensation of the water vapor.
  • temperature / time characteristic curves or characteristic curve fields will be determined for the different cooking modes and types of food, which characterize the temperature profile of the exhaust air or the fumes without the proportion of the thermal energy added by condensation, and this is, for example, in an electronic memory stored data compare cyclically with the cooling capacity of the heat exchanger 11 required to keep the temperature at the condensate trap 12 constant, from which a signal proportional to the vapor content of the vapor can be derived, which is used to control the heating device 5 by means of the control device 18 (FIG. 2).
  • FIG. 2 As can be seen from the curve diagram according to FIG.
  • curve P for example the electrical power for operating the heat exchanger 11 or the heat pump, would be necessary in order to keep the temperature at the condensate trap 12 constant in the case of a temperature profile without a condensation component (characteristic curve) Curve P is wavy according to curve ta. If a more or less large proportion of steam occurs in the vapor, for example, illustrated by a burst of steam A emanating from the food to be cooked, additional cooling power P1 is required as a result of the additional heat of condensation which is a measure of the vapor or moisture content of the vapor.
  • FIG. 1 the power shown in curve P, for example the electrical power for operating the heat exchanger 11 or the heat pump, would be necessary in order to keep the temperature at the condensate trap 12 constant in the case of a temperature profile without a condensation component (characteristic curve) Curve P is wavy according to curve ta. If a more or less large proportion of steam occurs in the vapor, for example, illustrated by a burst of steam A emanating from the food
  • the control device 13 has a Peltier element 15 as the heat exchanger 11 connected to the condensate trap 12, the already mentioned heat sink 14 being arranged on the cold side of the condensate trap 12 and on the warm side. which is cooled by the cooling air flow emanating from the cooling air fan 10 or from which the heat is removed.
  • the Peltier element is in operative connection with the control device 13, by means of which the electrical energy is controlled in order to keep the temperature at the condensate trap 12 constant and to maintain a temperature gradient between the hot and cold sides.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Electric Stoves And Ranges (AREA)
  • Electric Ovens (AREA)
  • Cookers (AREA)
  • Vending Machines For Individual Products (AREA)
  • Baking, Grill, Roasting (AREA)
  • Control Of Temperature (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Control Of Resistance Heating (AREA)
EP92101075A 1991-03-22 1992-01-23 Unité de cuisson avec un four obturable Expired - Lifetime EP0504555B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109565A DE4109565C2 (de) 1991-03-22 1991-03-22 Kocheinrichtung mit einem verschließbaren Garraum und Kochverfahren
DE4109565 1991-03-22

Publications (3)

Publication Number Publication Date
EP0504555A2 true EP0504555A2 (fr) 1992-09-23
EP0504555A3 EP0504555A3 (en) 1993-07-07
EP0504555B1 EP0504555B1 (fr) 1995-07-26

Family

ID=6428039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92101075A Expired - Lifetime EP0504555B1 (fr) 1991-03-22 1992-01-23 Unité de cuisson avec un four obturable

Country Status (5)

Country Link
EP (1) EP0504555B1 (fr)
JP (1) JPH0587345A (fr)
AT (1) ATE125614T1 (fr)
DE (2) DE4109565C2 (fr)
ES (1) ES2077884T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006056305A1 (fr) * 2004-11-25 2006-06-01 Miele & Cie. Kg Four pourvu d'un canal a vapeur dans lequel sont situes un catalyseur et un detecteur de gaz
WO2007077160A2 (fr) * 2005-12-30 2007-07-12 Arcelik Anonim Sirketi Four
EP2469176A1 (fr) * 2010-12-22 2012-06-27 BSH Bosch und Siemens Hausgeräte GmbH Appareil de cuisson et procédé de surveillance de deux températures limites sur un appareil de cuisson
US8302527B2 (en) 2006-12-11 2012-11-06 Miele & Cie. Kg Method for determining the variation with time of the amount of steam released from a food product during a cooking process in a cooking chamber of a baking oven
EP2306535A3 (fr) * 2009-10-02 2013-03-13 BSH Bosch und Siemens Hausgeräte GmbH Appareil ménager doté d'un composant chauffant en fonctionnement et d'un dispositif alimenté par énergie électrique ainsi que procédé d'alimentation d'un dispositif d'appareil ménager doté d'énergie électrique
EP3412973B1 (fr) * 2017-06-07 2024-02-28 Electrolux Appliances Aktiebolag Four comprenant un ensemble de détection des paramètres de fonctionnement à l'intérieur de la cavité du four

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319201A1 (de) * 1993-06-09 1993-11-18 Hans Heerig Verfahren zur Bestimmung der benötigten Energiemenge eines Gerätes bei der Wärmebehandlung von Nahrungsmitteln
DE4333585C2 (de) * 1993-10-01 1996-04-11 Friedrich Dipl Ing Hauck Herd mit einem als Backrohr nutzbaren, elektrisch oder mittels Gas beheizbaren Backraum
DE10128369B4 (de) * 2001-06-12 2012-02-16 BSH Bosch und Siemens Hausgeräte GmbH Gargerät mit einem Wrasenlüfter
CN109869760A (zh) * 2017-12-05 2019-06-11 佛山市顺德区美的电热电器制造有限公司 加热平台及加热平台的控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129330A (en) * 1981-02-04 1982-08-11 Matsushita Electric Ind Co Ltd Electric oven
DE3209541A1 (de) * 1982-03-16 1983-09-29 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Backofen
EP0279065A2 (fr) * 1987-02-06 1988-08-24 Electrolux-Juno Küchentechnik GmbH Dispositif de commande de vapeur dans un appareil de fermentation à vapeur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097707A (en) * 1975-05-20 1978-06-27 Matsushita Electric Industrial Co., Ltd. Apparatus for controlling heating time utilizing humidity sensing
JPS602762B2 (ja) * 1979-09-11 1985-01-23 株式会社村田製作所 湿度検出素子
US4864088A (en) * 1987-07-03 1989-09-05 Sanyo Electric Co., Ltd. Electronically controlled cooking apparatus for controlling heating of food using a humidity sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129330A (en) * 1981-02-04 1982-08-11 Matsushita Electric Ind Co Ltd Electric oven
DE3209541A1 (de) * 1982-03-16 1983-09-29 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Backofen
EP0279065A2 (fr) * 1987-02-06 1988-08-24 Electrolux-Juno Küchentechnik GmbH Dispositif de commande de vapeur dans un appareil de fermentation à vapeur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 228 (M-171)13. November 1982 & JP-A-57 129 330 ( MATSUSHITA ) 11. August 1982 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006056305A1 (fr) * 2004-11-25 2006-06-01 Miele & Cie. Kg Four pourvu d'un canal a vapeur dans lequel sont situes un catalyseur et un detecteur de gaz
US8469017B2 (en) 2004-11-25 2013-06-25 Miele & Cie. Kg Baking oven with a vapor channel in which a catalyst and a gas sensor are arranged
WO2007077160A2 (fr) * 2005-12-30 2007-07-12 Arcelik Anonim Sirketi Four
WO2007077160A3 (fr) * 2005-12-30 2007-10-25 Arcelik As Four
US8302527B2 (en) 2006-12-11 2012-11-06 Miele & Cie. Kg Method for determining the variation with time of the amount of steam released from a food product during a cooking process in a cooking chamber of a baking oven
EP2306535A3 (fr) * 2009-10-02 2013-03-13 BSH Bosch und Siemens Hausgeräte GmbH Appareil ménager doté d'un composant chauffant en fonctionnement et d'un dispositif alimenté par énergie électrique ainsi que procédé d'alimentation d'un dispositif d'appareil ménager doté d'énergie électrique
EP2469176A1 (fr) * 2010-12-22 2012-06-27 BSH Bosch und Siemens Hausgeräte GmbH Appareil de cuisson et procédé de surveillance de deux températures limites sur un appareil de cuisson
EP3412973B1 (fr) * 2017-06-07 2024-02-28 Electrolux Appliances Aktiebolag Four comprenant un ensemble de détection des paramètres de fonctionnement à l'intérieur de la cavité du four

Also Published As

Publication number Publication date
ES2077884T3 (es) 1995-12-01
EP0504555B1 (fr) 1995-07-26
EP0504555A3 (en) 1993-07-07
DE4109565A1 (de) 1992-09-24
ATE125614T1 (de) 1995-08-15
DE4109565C2 (de) 1999-05-06
DE59202998D1 (de) 1995-08-31
JPH0587345A (ja) 1993-04-06

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