EP1906100A2 - Appareil de cuisson et procédé destiné au réglage d'un vaporisateur dans un appareil de cuisson - Google Patents

Appareil de cuisson et procédé destiné au réglage d'un vaporisateur dans un appareil de cuisson Download PDF

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Publication number
EP1906100A2
EP1906100A2 EP07112658A EP07112658A EP1906100A2 EP 1906100 A2 EP1906100 A2 EP 1906100A2 EP 07112658 A EP07112658 A EP 07112658A EP 07112658 A EP07112658 A EP 07112658A EP 1906100 A2 EP1906100 A2 EP 1906100A2
Authority
EP
European Patent Office
Prior art keywords
steam
cooking chamber
flow channel
outlet region
detection element
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.)
Withdrawn
Application number
EP07112658A
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German (de)
English (en)
Inventor
Klaus Erdmann
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1906100A2 publication Critical patent/EP1906100A2/fr
Withdrawn legal-status Critical Current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
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
    • 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 cooking appliance with a cooking chamber and a steam generating device for generating steam in the cooking chamber and a flow channel for guiding cooling air, which flow channel is connected to the cooking chamber by at least one vapor transfer element.
  • the invention also relates to a method for adjusting a steam generation in a cooking appliance.
  • an oven which has a cooking chamber.
  • the boundary wall of the cooking chamber has a first opening, which constitutes a connection between the cooking chamber and a flow channel for cooling air.
  • a fan is arranged, which is activated depending on the temperature in the cooking chamber and its speed varies.
  • the cooking chamber comprises a second opening with a pipe arranged therein, outside of the cooking chamber and outside of the flow channel spaced from the tube, a temperature sensor is arranged, which detects the temperature in the cooking chamber depending on the emerging from the cooking chamber through the tube steam.
  • a cooking appliance with a controllable vent in which a first opening is formed in a boundary wall for a cooking chamber, which forms a connection to a flow channel for cooling air with a blower disposed therein.
  • a temperature sensor Spaced to the first opening, a temperature sensor is arranged in a protective housing, which is arranged in the flow channel.
  • the Temperature is a threshold, a closure of a second opening, which also represents a connection between the cooking chamber and the flow channel, opened in the boundary wall via a control unit, whereby the pressure in the cooking chamber to be reduced.
  • a cooking oven which has a steam generator in the bottom region of a cooking chamber.
  • a flow channel is formed, which extends between the cooking chamber and a Heilblasblanal.
  • the flow channel can be closed by a separate valve, which is arranged in the air exhaust duct.
  • the valve of this flow channel is closed in particular in the Dampfgarphase and thus during steam generation in the cooking chamber. Only when the steam generator is put out of operation and thus the steam generation is not active, the valve is opened. In the known cooking oven thus the steam generation is relatively inaccurate and it is characterized a relatively high water consumption required.
  • An inventive cooking appliance comprises a cooking chamber which is delimited by a cooking chamber housing which has at least one steam outlet region.
  • the cooking appliance also comprises a steam generating device for generating steam for the cooking chamber, and a vapor detection element arranged outside the cooking chamber at a distance from the steam outlet region, which is designed to detect a steam flow emerging through the steam outlet region.
  • the steam generating device is configured so that the generation of the steam is adjustable depending on the detection of the steam flow by the steam detecting element.
  • the steam generating device can be operated optimally and thus the required for steam generation water consumption can be set in an optimal manner. This can reduce water consumption to a minimum.
  • a simple and inexpensive device can be realized by the design of the cooking appliance.
  • the steam generating device is provided for generating steam for the cooking chamber
  • an embodiment is understood in which the steam generating device is arranged in the cooking chamber at least partially and the steam generation takes place in the cooking chamber itself.
  • this also means an embodiment in which the steam is generated outside the cooking chamber and the cooking chamber is fed.
  • the steam outlet region is designed as a nozzle.
  • This nozzle is advantageously designed as a continuously open and thus not closable channel.
  • the steam jet formation can be made possible at any time and, thus, a detection and, if appropriate, resulting adjustment of the steam generation of the steam generating device can be carried out very promptly if appropriate.
  • a simple and with regard to a low probability of failure optimal design of the steam outlet region can be provided by this configuration. A complex control or the like with regard to opening and closing of the steam outlet area can thereby be avoided.
  • the steam outlet region is designed as a valve or the like, which is thus also closable.
  • the steam outlet region preferably has a diameter between 1.5 mm and 6.5 mm. Particularly preferred is a diameter between 2 mm and 5.5 mm.
  • a plurality of steam outlet regions are formed in the form of open nozzles.
  • two steam outlet regions are formed in particular in the form of open non-closable nozzles, which preferably each have a diameter of about 5 mm.
  • more than two steam outlet regions, in particular six steam outlet regions are formed, of which at least one, preferably all, are designed as open, non-closable nozzles.
  • the nozzles are realized with a substantially same diameter of preferably about 2.2 mm. If a plurality of steam outlet regions are provided, it is of course also possible to implement a configuration in which the steam outlet regions have different diameters. Depending on requirements and thus also depending on the design and installation situation, a variety of realizations with regard to the number, arrangement and design as well as the design of the steam outlet areas can thus be formed.
  • the steam exit region and the vapor detection element are preferably arranged so that there is a distance between 10 mm and 25 mm between these elements. Particularly preferably, these components of the steam outlet region and the vapor detection element are arranged so that they are arranged at a distance between 15 mm and 20 mm. This allows an advantageous arrangement with regard to a minimum space requirement on the one hand and a reliable function of the system on the other hand, taking into account the pressure conditions occurring in the cooking chamber.
  • the vapor detection element is preferably designed as a temperature sensor.
  • a Pt sensor in particular a Pt1000 sensor, proves to be advantageous.
  • the detection of the steam flow or of the steam jet by the vapor detection element is preferably dependent on a predeterminable temperature difference between a reference temperature and a measurement temperature. This means that a detection is only spoken when this temperature difference has occurred. Only then is a further evaluation made as to how the steam generation is controlled by the steam generating device hereinafter.
  • the vapor detection element is arranged in a flow channel for guiding cooling air for cooling the cooking chamber housing.
  • the steam outlet area then advantageously connects the cooking chamber with the flow channel.
  • a fan for cooling air generation may be arranged in the flow channel.
  • the reference temperature is preferably characterized by a temperature in the flow channel without a steam flow emerging from the cooking chamber. This means that the reference temperature is defined only by the temperature of the cooling air flow, which preferably flows past the vapor detection element.
  • the reference temperature can also be characterized by such a temperature in the flow channel in which a steam jet or a steam flow enters the flow channel, but whose temperature is without influence on the measurement temperature detected by the vapor detection element. Even if, therefore, a jet of steam enters the flow channel, but the cooling air flow is so strong that the steam jet is deflected so that its temperature impact is not detected by the vapor detection element, therefore, this temperature can be used as a reference temperature.
  • the reference temperature can therefore be any temperature in the flow channel on which a substantial change in temperature does not occur in the detection region of the vapor detection element, even if a steam jet enters the flow channel.
  • the strength of the steam flow and thus also its vapor pressure is dependent on the vapor pressure in the cooking chamber. With increasing pressure in the cooking chamber, a stronger flow of steam thus enters the flow channel via the steam outlet region, whose jet height also increases with increasing pressure.
  • the steam outlet region and the vapor detection element are preferably arranged and dimensioned such that the steam flow is always detectable if there is a too high vapor pressure in the cooking chamber for the current mode of operation of the cooking appliance and an excessively high water consumption for the generation of steam associated therewith.
  • a threshold level can be defined, wherein when this threshold level is exceeded, detection of the steam jet by the vapor detection element is always possible.
  • This threshold level can also be set so that a detection of the steam flow is possible even if the height of this exceeds this threshold level, but still does not have the full height between the steam exit region and the vapor detection element.
  • the temperature influencing of the vapor flow in the ambient region or detection region of the vapor detection element can influence the temperature such that the vapor detection element detects a higher measurement temperature than the reference temperature. From this it can be in turn concluded that the vapor pressure in the cooking chamber is too high, from the temperature difference between the reference temperature and the measuring temperature, a conclusion on this vapor pressure in the oven is possible. Depending on this, then the further adjustment of the steam generating device and thus the generation of the steam can be regulated.
  • the vapor transfer element is arranged in a side wall of the flow channel, which faces the cooking chamber.
  • the vapor detection element is preferably arranged on a side wall of the flow channel facing away from the cooking chamber. This positioning of these elements is advantageous with regard to the detection of the steam jet.
  • a further improvement with regard to the detection can be achieved by arranging the steam outlet region and the vapor detection element substantially opposite to the flow channel. It can be provided that the two elements mentioned are arranged substantially spaced apart from each other on a connecting straight line. However, it can also be provided that this opposing arrangement is designed so that the components viewed in the longitudinal direction of the flow channel are arranged offset from one another. Preferably, this staggered arrangement is designed so that the vapor detection element on the corresponding side wall of the flow channel is closer to the outlet or to an air outlet opening of the flow channel than the steam outlet region.
  • a steam flow which is at least slightly deflected by flowing cooling air can then also be detected by the vapor detection element if the vapor pressure of the vapor flow is so great that it reaches at least close enough to the vapor detection element to be able to detect this vapor flow.
  • the control and adjustment of the steam generation can be done very accurately and promptly.
  • the arrangement of the steam outlet region and the vapor detection element is preferably selected so that at a sufficiently high vapor pressure in the cooking chamber and a correspondingly strong flow of steam is generated, which can then be detected by the vapor detection element.
  • the system recognizes that steam generation is too strong and thus a reduction of steam generation or even shutdown of the steam generating device is required. If a vapor flow with a relatively low vapor pressure enters the flow channel, it is either not detected at all by the vapor detection element or the influence of the vapor jet on a measurement of the vapor detection element is so small that the generation of steam does not have to be changed. In particular, a shutdown of the steam generating device is then not required.
  • the steam outlet region is preferably arranged such that a steam outlet opening of this steam outlet region facing the flow channel faces the steam detection element.
  • This arrangement and orientation ensures that the steam flow in its basic orientation emerges at least approximately in the direction of the vapor detection element from the steam outlet region.
  • the arrangement can be made relatively space-saving and optimal in terms of accuracy of a measurement.
  • the flow channel has an arrangement region in which the steam outlet region extends into the flow channel.
  • the arrangement region is formed such that the flow channel in this arrangement region has a larger diameter than is the case in the regions adjoining the arrangement region.
  • the arrangement region is preferably designed such that it represents a bulge of the flow channel facing the cooking chamber.
  • a steam control flap is formed between the cooking chamber and the flow channel.
  • This steam control flap is preferably in the arrangement region of the Positioned flow channel. This design also allows space-saving implementation and also ensures that the steam control flap is not arranged directly in the cooling air flow. Mechanical stability and freedom from wear can be improved.
  • the steam outlet region is arranged on the steam control flap.
  • an integral embodiment can be provided.
  • the steam from the cooking chamber preferably opens through an opening to both the steam control valve and the steam outlet area.
  • the generation of steam in the cooking chamber can thus be influenced particularly positively and be set very precisely.
  • the steam control flap is formed substantially larger than the steam outlet area in an advantageous manner.
  • this vapor control flap is movably arranged and can thus be closed and opened.
  • a fast and reliable outflow of this overpressure can be made possible by opening this vapor control valve.
  • this vapor control flap By means of this vapor control flap thus a steam outlet opening of the cooking chamber is covered depending on the situation or at least partially opened.
  • the opening and closing of this vapor control flap can preferably take place via a wax activation device. Depending on the temperature, the wax expands or contracts, which then causes a corresponding opening or closing of this vapor control flap.
  • the steam outlet region and the steam control flap may preferably also be formed in one piece. This allows a relatively simple and inexpensive production can be realized. Last but not least, the maintenance and assembly can be made possible with little effort.
  • a control and / or regulating unit for evaluating the information of the vapor detection element can be arranged in the steam generating device or as a separate unit for this purpose in the cooking appliance.
  • a steam generation via a steam generating device of a cooking appliance steam is passed through the Steam generating device is generated and introduced into a cooking chamber of the cooking appliance.
  • a steam flow from the cooking chamber flows through a steam outlet region and depending on a detection of this steam flow by a spaced apart from the steam outlet region outside the cooking chamber steam detection element, the generation of the steam is set by the steam generating device.
  • a cooking appliance 1 is shown in a simplified and schematic representation, which may be designed as Dampfgarer or steam oven. In the illustration in Fig. 1, only essential for understanding the invention components of the cooking device 1 are shown.
  • the cooking appliance 1 comprises a housing 1a, in which a cooking chamber 2 is formed.
  • a cooking chamber 2 In the cooking chamber 2 food can be introduced for preparation.
  • the cooking space 2 is limited by a cooking chamber housing, which has an upper wall portion 31, a bottom portion 32 and a rear wall 33.
  • a loading opening At a front side of the cooking chamber 2 is accessible through a loading opening, which is closed by a door 4. In the illustration shown in Fig. 1, this door 4 is closed.
  • This steam generating device 5 can be, for example, a water evaporator or a cooker and comprise an evaporation tray 51 which can be filled at least partially with water and which can be heated by a heating device (not shown).
  • the water level control in this evaporator shell 51 may be realized, for example, according to the so-called birdbath principle.
  • the running of water in the evaporator shell 51 via special pressure compensation mechanisms in this context, when the water level in the evaporator shell 51 and falls below a certain water level levels air enters the water supply of the evaporator shell 51 and then the migration of this bubble in the Water guidance system allows the running of water in the evaporator shell 51.
  • the steam generating device 5 may also include a spraying and distributing device (not shown). Steam 6 can be generated in the cooking chamber 2 by the steam generating device 5.
  • the cooking appliance 1 comprises a flow channel 7, which is arranged above the cooking chamber 2.
  • a cooling air for cooling the cooking chamber housing 31, 32, 33 is guided.
  • the flow channel 7 is oriented substantially horizontally and, in the cross-sectional view, has a side wall 71 facing away from the cooking chamber 2 and a side wall 72 facing the cooking chamber 2.
  • an arrangement region 72a is formed, which represents a bulge or depression of the flow channel 7.
  • the flow channel 7 has a larger diameter than outside the arrangement region 72a.
  • a steam control valve 8 and a steam outlet region 9 are arranged.
  • the steam control flap 8 is designed to open or close a steam outlet opening 31 a in the upper wall portion 31 of the cooking chamber.
  • the opening and closing of this steam control valve 8 can, for example via a wax activation device.
  • the steam control flap 8 may for example have a length of about 80 mm and a width of about 30 mm and extending in a plane perpendicular to the plane of the figure.
  • the steam outlet region 9 is integrally formed in the steam control flap 8, wherein the steam outlet region 9 is realized as a bore channel.
  • the steam outlet region 9 is thus designed in the embodiment as always open and non-closable element and functionally designed as a nozzle. In the exemplary embodiment, only one nozzle or a steam outlet region 9 is shown. However, it can also be provided a plurality of such steam outlet region 9.
  • the diameter of the steam outlet region 9 is substantially smaller than the diameter of the steam outlet opening 31 a and the opening 721 a in the side wall 72.
  • a sealing element 10 is arranged between the upper wall portion 31 and the side wall 72, in particular the arrangement region 72a, a sealing element 10 is arranged ,
  • a vapor detection element 11 designed as a Pt1000 sensor is arranged in the flow channel 7.
  • the steam outlet region 1 is oriented such that it faces the vapor detection element 11 with a steam outlet opening 91 (FIG. 2).
  • the steam outlet region 9 and the vapor detection element 11 are arranged substantially opposite one another in the flow channel 7.
  • the vapor detection element 11 is electrically connected to an evaluation unit 12.
  • This evaluation unit 12 is designed to evaluate the measured values detected by the vapor detection element 11.
  • the evaluation unit 12 is connected to a control and / or regulating unit, not shown, which in turn is contacted with the steam generating device 5 and is designed to control and / or regulate this steam generating device 5. It can also be provided that the evaluation unit 12 and the control and / or regulating unit are realized in a common unit.
  • a blower 13 is further arranged, which is designed to generate the cooling air flow.
  • the fan 13 is positioned in the rear region of the cooking appliance 1 and the cooling air flow generated in the tapered flow channel 7 exits in the region of an outlet opening 1b.
  • Both the arrangement and the design of the flow channel 7 and the blower 13 and the orientation of the cooling air flow are merely exemplary and can be configured in many ways.
  • the vapor detection element 11 is designed to detect a vapor flow 14.
  • the steam flow 14 is generated by the steam outlet region 9, which connects the cooking chamber 2 with the flow channel 7. Depending on this detection of the vapor flow, the control of the steam generation by the steam generating device 5 then takes place.
  • the steam flow 14 is deflected by the cooling air in the direction of the outlet opening 1 b.
  • the vapor pressure of the steam flow 14 is still so low that the height (y-direction) of the steam flow 14 is relatively low.
  • the steam flow 14 is thus deflected early and still has no influence on the detection range of the vapor detection element 11.
  • the vapor detection element 11 thus detects a measurement temperature which does not deviate from a reference temperature.
  • the reference temperature is characterized in that it corresponds to the temperature in the flow channel 7, which would also be present in the detection region of the vapor detection element 11, if only the temperature of the cooling air would be present.
  • the vapor pressure in the cooking chamber 2 is thus not yet so high that the height of the steam flow 14 would enter the detection region of the vapor detection element 11 and there would be a temperature influence, which would entail an increased or significantly increased measurement temperature compared to the reference temperature would.
  • Fig. 2 is an enlarged view of a partial section I of Fig. 1 is shown, in this context, a different compared to the representation in Fig. 1 Operating phase of the cooking device 1 is shown.
  • a steam 6 prevails with a vapor pressure, which leads to a steam flow 14 ', which despite the deflection by the cooling air of the blower 13 to the steam detection element 11 extends.
  • the steam flow 14 'thus extends in this embodiment over the entire height h and thus over the entire distance between a steam outlet opening 91 of the steam outlet region 9 and the vapor detection element 11.
  • the vapor pressure of the steam flow 14' in this embodiment is so great and thus the height h the steam flow 14 'so large that it reaches both with and without the cooling air flow to the vapor detection element 11. Since the steam flow 14 ' also has a significantly higher temperature than the cooling air flow, the steam detection element 11 detects a significantly higher measuring temperature than the reference temperature and detects a temperature difference in the evaluation unit 12 (FIG. 1), which in the exemplary embodiment deactivates the steam generating device 5 result.
  • Fig. 2 thus a situation is shown in which the kettle or the steam generating device 5 generates too much steam, said steam is blown off through the nozzle or the steam outlet region 9 by the generated steam flow 14 '.
  • the steam flow 14 is so low that it is deflected by the cross flow and the cooling air flow and is not detected by the vapor detection element 11 with respect to a temperature difference. In the operating situation according to FIG. 2, this is no longer the case and the steam flow 14 'strikes the sensor or the vapor detection element 11.
  • the vapor detection element 11 is arranged in the x-direction and thus in the longitudinal direction of the flow channel 7 slightly offset from the vapor exit region 9. By means of the vapor detection element 11 can also be detected whether the vapor pressure in the cooking chamber 2 is so large that the steam control flap 8 should be at least partially opened for a certain period of time.
  • the arrangement also allows a pressure equalization, which is important for a water level control, which works according to the birdbath principle.
  • a pressure equalization which is important for a water level control, which works according to the birdbath principle.
  • the steam generation of the steam generating device 5 reduced or increased or even switched off completely.
  • the regulation and thus also the water consumption required for steam generation can be optimized quickly and efficiently.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
EP07112658A 2006-08-17 2007-07-18 Appareil de cuisson et procédé destiné au réglage d'un vaporisateur dans un appareil de cuisson Withdrawn EP1906100A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006038415A DE102006038415A1 (de) 2006-08-17 2006-08-17 Gargerät und Verfahren zum Einstellen einer Dampferzeugung in einem Gargerät

Publications (1)

Publication Number Publication Date
EP1906100A2 true EP1906100A2 (fr) 2008-04-02

Family

ID=38983710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07112658A Withdrawn EP1906100A2 (fr) 2006-08-17 2007-07-18 Appareil de cuisson et procédé destiné au réglage d'un vaporisateur dans un appareil de cuisson

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EP (1) EP1906100A2 (fr)
DE (1) DE102006038415A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011063841A1 (fr) * 2009-11-26 2011-06-03 Adolf Cermak Procédé de fabrication de produits de boulangerie et fours sous vide pour mettre en oeuvre le procédé

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008036684A1 (de) 2008-08-06 2010-02-11 Rational Ag Gargerät und Verfahren zum Überwachen eines Garprozesses
PL2474787T3 (pl) 2012-04-13 2017-05-31 V-Zug Ag Przyrząd do gotowania na parze

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221526A (ja) * 1983-05-31 1984-12-13 Matsushita Electric Ind Co Ltd 加熱装置
DE3741975A1 (de) * 1987-12-11 1989-06-22 Buderus Kuechentechnik Vorrichtung zur steuerung eines mit dampf betriebenen gargeraetes und vorrichtung zum betreiben eines solchen geraetes
CH691280A5 (de) * 2000-06-20 2001-06-29 V Zug Ag Dampfgargerät mit Vorheizung.
JP4631042B2 (ja) * 2001-08-30 2011-02-16 パロマ工業株式会社 複合加熱調理装置
DK2189084T3 (da) * 2007-06-26 2011-10-31 V Zug Ag Tilberedning af mad, der skal koges, med dampudgangs-detektion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011063841A1 (fr) * 2009-11-26 2011-06-03 Adolf Cermak Procédé de fabrication de produits de boulangerie et fours sous vide pour mettre en oeuvre le procédé

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