EP2369227B1 - Unité de production de vapeur pour un appareil ménager et procédé de production de vapeur d'eau - Google Patents

Unité de production de vapeur pour un appareil ménager et procédé de production de vapeur d'eau Download PDF

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Publication number
EP2369227B1
EP2369227B1 EP10194438.7A EP10194438A EP2369227B1 EP 2369227 B1 EP2369227 B1 EP 2369227B1 EP 10194438 A EP10194438 A EP 10194438A EP 2369227 B1 EP2369227 B1 EP 2369227B1
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EP
European Patent Office
Prior art keywords
steam
generation unit
fill level
channel
steam generation
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Active
Application number
EP10194438.7A
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German (de)
English (en)
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EP2369227A3 (fr
EP2369227A2 (fr
Inventor
Reinhard Wiedenmann
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP2369227A2 publication Critical patent/EP2369227A2/fr
Publication of EP2369227A3 publication Critical patent/EP2369227A3/fr
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Classifications

    • 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
    • F22B37/46—Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to low or high water level, e.g. for checking, suppressing, extinguishing combustion in boilers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
    • F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
    • 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

Definitions

  • the invention relates to a steam generating unit for a household appliance, having at least one evaporator, in particular a flow heater, a fill level detection unit which is fluidly connected in parallel to the flow heater, and a condensate return channel.
  • the invention also relates to a method for generating water vapor.
  • DE 68901773 T2 discloses a water vapor generator for cooking utensils, comprising a lower cross line which is provided with a water inlet opening, an upper cross line which is provided with a steam outlet opening which is arranged above the lower line, at least one ascending heating pipe with an axially arranged cavity, the first end of which is tight is connected to a corresponding first opening of the lower conduit, and the second end of which is tightly connected to a corresponding first opening of the upper conduit to allow the passage of the fluid between the lower conduit and the upper conduit, the heating tube having one on its outer surface helically rolled up and welded on the heating pipe electrical resistor, which can be connected to an electrical energy source to heat the pipe, a return pipe, whose first end tightly with a corresponding second opening of the lower line and whose second end tightly with a corresponding second opening of the upper line is connected, wherein the return pipe ensures the return of non-evaporated water from the upper line in the direction of the lower line, means for detecting the water level
  • DE 10 2006 050 367 A1 relates to a method for carrying out a cooking process with a cooking device, in particular a steam cooking device, in which a cooking program is selected on the cooking device, before starting the cooking program, an automatic check is carried out to determine whether there is a sufficient amount of water in a water container of the cooking device to carry out the selected cooking program for steam generation is available, and the refilling of water in the water tank is indicated on a display by at least one hint word if an insufficient amount of water is determined.
  • the amount of water can be determined from the water levels in the water tank by using permanently positioned switches, in particular reed switches, to identify the respective water levels and metallic and / or magnetic floats in the water trigger the switches when the water levels have dropped to the level of the switches .
  • switches in particular reed switches
  • a relatively simple and inexpensive and yet very reliable possibility can be created of being able to check the respective water levels and thus also the respective amounts of water.
  • a relatively low-wear and also low-defect design can be guaranteed by these designs. The reliable determination of the amount of water required for the individual cooking programs can thus be determined very quickly and precisely.
  • EP 0 685 682 A1 shows a boiler for steam generation, in particular for sauna installations, comprising a vessel for holding water that is to be brought to the boiling point, with a first pipe connection for the inflowing water in the liquid state and a second pipe connection for the exiting steam and a Heating element to bring the water to the boiling point, the vessel being divided by a partition into a first sector containing the heating element and a second sector containing the inlet and outlet pipe connections, the sectors by a first and a second Opening in the partition are connected to each other, which are each arranged below and above the free water surface.
  • a steam generation unit for a household appliance which has at least one flow heater, a level detection unit which is connected fluidically in parallel to the flow heater and has a condensate return.
  • water supplied to it is converted into water vapor by means of the evaporator.
  • the water vapor can then be introduced into a treatment space of the household appliance, e.g. into a cooking space of a cooking appliance.
  • a flow heater In the case of a flow heater, water standing in a heating pipe is typically heated by a heater surrounding the heating pipe, while in a boiler a container filled with water is heated by a heating plate usually placed in the bottom of the container.
  • a flow heater has the advantage that the water is heated particularly quickly and steam regulation responds comparatively quickly.
  • a fill level detection unit is provided, which can detect at least when a predetermined fill level has been reached.
  • the level detection unit can be used for a precise determination of the filling level in the steam generating unit according to the principle of communicating tubes with that of the steam generating unit.
  • condensate formed between the evaporator and the cooking chamber should not flow back into the evaporator, but into a condensate return.
  • the condensate return is integrated into the level detection unit in such a way that condensate flows back into the level detection unit.
  • the level detection unit also serves as the condensate return, into which the condensate flows back.
  • the condensate return can also be viewed as a condensate return tank or as a condensate collection unit.
  • the functional combination of the level detection unit with the condensate return results in a particularly compact and inexpensive design, as a separate condensate return can be dispensed with. In this case, the accuracy of the level determination is not or not significantly impaired.
  • a steam outlet channel is connected to an outlet end of the instantaneous water heater, which in the further course merges into a steam channel, a flow cross-section of the steam channel being at least partially larger than a flow cross-section of the steam outlet channel, that an upper end of the level detection unit fluidly with a condenser return channel is connected to the steam channel and that the water heater, the steam channel and the steam outlet channel are inclined and the level detection unit is vertical. Due to the initially small flow cross-section behind the flow heater, a high flow velocity of the water vapor is generated there. This in turn prevents the condensate from flowing back into the flow heater, as it is blown out by the water vapor.
  • a ratio of the flow cross section of the steam channel to the flow cross section of the steam outlet channel is at least in sections at least 1.5. This enables a particularly compact design to be achieved.
  • the ratio is in particular in a range between 2.5 and 3.5. This achieves very good prevention of condensate entry into the evaporator while at the same time providing sufficient condensate separation.
  • the flow speed of the steam to the steam inlet remains sufficiently high for effective steam introduction even in the larger flow cross-section.
  • the design is still compact.
  • the ratio can therefore also be greater than 3.5, particularly when considering the steam channel and steam outlet channel in sections.
  • a ratio greater than 3.5 (in sections) can be achieved, for example, in that the steam channel has a condensate precipitation space, e.g. an intermediate housing, with a large flow cross-section.
  • the condensate precipitation chamber can in turn have an outlet opening leading to the cooking chamber with a comparatively small cross section.
  • the steam channel has a flow cross section in a range between 175 mm 2 and 325 mm 2 and / or the steam outlet channel has a flow cross section in a range between 25 mm 2 and 50 mm 2 .
  • the flow cross-section of the steam channel if it is designed essentially circular, can have a diameter in a range between 15 mm and 20 mm and / or the flow cross-section of the steam outlet channel, if it is essentially circular, can have a diameter in a Have a range between 6 mm and 8 mm.
  • the steam channel is connected to a steam inlet leading into a cooking space, the steam inlet having a flow cross-section that is reduced with respect to the steam channel, in particular a flow cross-section that is reduced by a factor of 0.25 to 0.4. This reduction of the The cross-section of the flow ensures that condensate and water droplets are retained and do not penetrate into the treatment room.
  • the fill level detection unit is fluidically connected on the steam side to an underside of the steam channel. In this way, the condensate flowing back can be directed into the condensate return / fill level detection unit without hindrance and essentially completely.
  • the level detection unit has at least one float, which switches at least one reed contact or reed switch when approached.
  • the float has at least one magnetic or electrically conductive volume.
  • the steam generation unit is arranged on a rear wall of the household appliance.
  • the rear wall can in particular be an intermediate rear wall which is in particular separated from a rear wall of a treatment room, in particular a cooking chamber, by thermal insulation and is covered by an outer rear wall of the household appliance.
  • the steam generation unit can thus be easily installed, e.g. preassembled on a mounting bracket and then attached to the rear wall (rear wall of the cooking space, intermediate rear wall or outer rear wall, etc.) with the mounting bracket.
  • the steam generation unit is connected on the steam side to a steam inlet leading into a cooking chamber, the steam inlet being arranged on an upper edge of a rear wall of the treatment room, in particular the cooking chamber, or on a ceiling of the treatment room. This position of the steam inlet means that the treatment room can easily be filled with the steam in a sufficiently homogeneous concentration.
  • the steam generation unit is hydraulically connected to a water reservoir on the inlet side, the water reservoir being arranged above a treatment space, in particular a cooking space.
  • the water reservoir can be thermally decoupled from the treatment room, and a valve can be used to control the filling of the steam generating unit, which valve is inserted in an inflow channel or inlet channel between the water reservoir and the steam generating unit.
  • the object is also achieved by a method for generating steam for a cooking appliance, in particular a steam cooker, the steam being generated by means of a steam generating unit according to the invention, the steam generated first flowing through a steam outlet channel with a smaller flow cross-section and then through a steam channel with a larger flow cross-section and condensate forming behind the steam outlet channel essentially flows into a level detection unit.
  • a fill level in the steam generation unit is regulated by a float in the fill level detection unit switching a lower reed contact when a lower fill level is reached, whereupon water is supplied to the steam generation unit until the float an upper one when an upper fill level is reached Reed contact switches.
  • a fill level in the steam generation unit is regulated by a float in the fill level detection unit switching a reed contact when a predetermined fill level is reached, whereupon the steam generation unit is filled with water for a predetermined period of time. In this way, a reed contact or reed switch can be saved.
  • a level in the steam generating unit is regulated by filling the steam generating unit with water until a float in the level detection unit switches a reed contact when a predetermined level is reached, whereupon the filling is interrupted, the filling being resumed when a predetermined amount of water has been evaporated.
  • a reed contact or reed switch can also be saved.
  • Fig. 1 shows a steam generation unit 1 for a household appliance in the form of a steam cooker D.
  • the steam generation unit 1 has an inflow channel 2, which leads to an input side ED of a flow heater 3.
  • the water heater 3 On its output side AD, the water heater 3 is connected to a steam outlet channel 4.
  • the steam outlet channel 4 widens from a predetermined distance behind the water heater 3 (downstream) to a steam channel 18.
  • the direction of flow of the water vapor V is indicated by the associated arrow.
  • the water can be conveyed through the inlet channel 2 by means of a pump (not shown).
  • a fill level (or water level or level) in a water reservoir is above a desired fill level N in the water heater 3, the water can be supplied by optionally opening and closing a valve which controls a flow cross-section to the water reservoir.
  • the water heater 3 and the level detection unit 7 are thus connected fluidically in parallel according to the principle of communicating tubes and hydraulically form a unit.
  • the (geodetic) fill level N in the water heater 3 thus essentially corresponds to the fill level in the fill level detection unit 7.
  • the level detection unit 7 has a housing 9 with a float (not shown) located therein, which floats on the water. The position of the float is thus also a measure of the level in the water heater 3.
  • the float is equipped with at least one magnetic element.
  • the level detection unit 7 also has two reed contacts or reed switches arranged at a distance from one another on the housing 9, namely a lower reed contact 10 and an upper reed contact 11. The reed contacts 10 and 11 respond to an approach of the float.
  • the fill level N in the water heater 3 should be kept between a lower fill level Nu and an upper fill level No (optimal fill level range) in order to ensure a highly uniform steam generation and good steam quality (largely free from water droplets). Maintaining the optimum fill level range also ensures that the instantaneous water heater 3 can easily be regulated within a certain temperature range or to a predetermined temperature. If the upper level No is exceeded and / or if the level falls below the lower level Nu, the water heater 3 can also be damaged, for example by drying out when the level falls below the lower level Nu.
  • the maintenance of the optimal fill level range by a corresponding regulation of the fill level as a control variable can be achieved by detecting the fill level by means of the fill level detection unit 7.
  • the fill level detection unit 7 is equipped with the two reed contacts 10 and 11, as shown.
  • the reed contacts 10 and 11 are switched via the magnetic float, which moves within the level detection unit 7 according to the level. If the fill level in the fill level detection unit 7 rises to the upper fill level No, the upper reed contact 11 switches and a water supply via the inflow channel 2 is interrupted, for example by stopping the pump or closing the valve. As a result, filling of the flow heater 3 is stopped. If, on the other hand, the fill level in the fill level detection unit 7 drops as a result of the evaporation down to the lower fill level Nu, the lower reed contact 10 switches and a water supply via the inlet channel 2 is resumed or activated.
  • the fill level can rise to the upper fill level No, whereupon an (upper) reed contact 11 switches and the water supply or the filling is stopped.
  • the drop in the level for example to the lower level Nu (or above), results from the amount of water that has evaporated.
  • the amount of water that has evaporated can in turn be estimated from the output of the flow heater 3 (here approx. 1100 watts) and the switched-on duration of the flow heater 3.
  • the switching point for refilling is consequently not effected by switching a (lower) reed contact 10, but after a certain period of time with a known evaporation capacity and following the amount of steam from the water heater 3.
  • a second alternative embodiment is shown in FIG Fig. 3 shown.
  • Fig. 2 shows a front view of a rear side R of the steam cooker D with the steam generating unit 1 attached to it.
  • the contour of an intermediate rear wall RW of the steam cooker D at the level of the cooking space G is indicated here by dashed lines.
  • the steam inlet 14 can be equipped with a nozzle.
  • the steam generating unit 1 is connected on the inlet side via the inflow channel 2 to a pump 15 or valve 16, which in turn is connected to a water reservoir 17.
  • An outlet 20 of the water reservoir 17 is geodetically higher than the pump 15 or the valve 16, the steam generating unit 1 and the steam inlet 14 at a height hR a geodetic height hD, which is lower than the height hR, but higher than the steam generating unit 1 and its level N.
  • the water reservoir 17 is arranged in particular above the cooking space G so that it is only exposed to a low thermal load.
  • the water reservoir 17 is also arranged adjacent to or in the vicinity of a side wall S of the steamer D, for example a right-hand area (as shown here when viewed from the rear) or a left-hand area.
  • the inflow channel 2 first leads vertically downwards to a lower edge area of the intermediate rear wall RW and then turns horizontally, along the lower edge of the intermediate rear wall RW, to the other side (here the left side).
  • On the other side, on the intermediate rear wall RW there is the steam generation unit 1, which again extends essentially upwards in the direction of the steam inlet 14.
  • the steam inlet 14 is located on an upper edge of the intermediate rear wall RW. Alternatively, the steam inlet 14 can be located in a ceiling of the cooking space G.
  • the steam generation system extending from the water reservoir 17 to the steam inlet 14 essentially has a U-shape, which leaves space in its center for the assembly of further components, for example a fan.
  • the heights of the water reservoir 17, the steam generation unit 1 and the steam inlet 14 show a sequence of “high-low-medium”.
  • the steam generation system can have a substantially V-shape.
  • An alternative position for the pump 15 or the valve 16 is located directly on the water reservoir 17.
  • water droplets can form from condensate.
  • the comparatively short steam outlet channel 4 is followed by the steam channel 18 with its larger flow cross-section, which in turn is connected to the connecting hose 13.
  • the connecting hose 13 also has a comparatively large flow cross section. Due to the large flow cross-section of the steam channel 18 and the connecting hose 13, the water vapor V flows therein at a relatively low speed, so that the water droplets from condensate K are not entrained in the direction of the steam inlet 14. Rather, the water droplets run back due to gravity in the connecting hose 13 and in the steam channel 18 against the direction of flow of the water vapor V and further through the condensate return channel 8 into the level detection unit 7 Design is made possible.
  • Fig. 3 shows in a view obliquely from the side a steam generating unit 21 for a household appliance according to a second embodiment.
  • the steam generating unit 21 now only has one reed contact 10.
  • the reed contact 10 switches when the lower level Nu is reached.
  • the filling, for example, up to the upper level No (or below) takes place within a certain time interval or a certain activation period of the pump or the solenoid valve or generally through a time-limited generation of a volume flow through the inflow channel 2.
  • connection hose 13 is connected on the inlet side to the steam channel 18 and on the outlet side to the steam inlet 14, which is designed in the form of a nozzle.
  • the steam outlet channel 4 directly adjoining the outlet end or the outlet side AD of the flow heater 3 has a diameter of approximately 6 mm to 8 mm, in particular approximately 6 mm. This comparatively small flow cross-section ensures a high flow speed of the water vapor V. This in turn prevents the condensate from flowing back into the flow heater 3, since any water droplets that may be present are "blown away" by the water vapor V.
  • the steam channel 18 and the connecting hose 13 both have a widening of the flow cross-section in comparison to the steam outlet channel 4. As a result, the flow velocity of the water vapor V decreases, so that condensate or water droplets can now settle, which run back under the force of gravity. It is preferred that an expanded flow cross-section (here of the steam channel 18 and the connecting hose 13) following the small flow cross-section directly behind the flow heater 3 is realized by a diameter of at least 10 mm. In particular, a diameter between 15 mm and 20 mm is preferred.
  • a diameter of the steam outlet to 8 mm or less, in particular to approx. 6 mm, is preferred.
  • the condensate return channel 8 has a diameter of at least 8 mm, in particular at least 10 mm, so that the condensate can flow back unhindered and essentially completely into the level detection unit 7.
  • Both the steam generating unit 1 according to the first embodiment and the steam generating unit 21 according to the second embodiment are characterized by a very good steam quality in which the generated or released steam has no or only a small amount of water droplets.
  • a uniform operation of the steam generation is possible, since the filling level can be maintained uniformly (essentially constant or within a predetermined range). Due to the even filling level, temperature control of the Water heater 3 easily possible.
  • the water heater 3 can be filled in a simple and robust manner. The filling of the water heater 3 can be regulated. The risk of the water heater 3 overflowing or being filled with too little water (going dry) is excluded.
  • the steam cooker D can in particular be understood to mean a dedicated steam cooker or an oven / steam cooker combination, e.g. an oven with a steam cooker function.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Cookers (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Claims (13)

  1. Unité de production de vapeur (1) pour un appareil électroménager (d), comprenant
    ― au moins un chauffe-eau à écoulement libre (3),
    ― une unité de détection du niveau de remplissage (7), laquelle est fluidiquement raccordée en parallèle au chauffe-eau à écoulement libre (3) et
    ― un retour de condensat (8),
    dans laquelle
    ― le retour de condensat (8) est intégré à l'unité de détection du niveau de remplissage (7) de telle sorte que le condensat retourne s'écouler dans l'unité de détection du niveau de remplissage (7),
    ― un canal de sortie de vapeur (4) étant raccordé sur un embout de sortie (AE) du chauffe-eau à écoulement libre (3), lequel devient plus loin dans l'écoulement un canal de vapeur (18), une section de passage du canal de vapeur (18) étant au moins en partie plus grande qu'une section de passage du canal de sortie de vapeur (4), et
    ― l'embout supérieur (OE) de l'unité de détection du niveau de remplissage (7) étant raccordé fluidiquement au canal de vapeur (18) par le biais d'un canal de retour du condensat,
    caractérisée en ce que
    ― le chauffe-eau à écoulement libre (3), le canal de vapeur (18) et le canal de sortie de vapeur (4) sont obliques et l'unité de détection du niveau de remplissage (7) est verticale.
  2. Unité de production de vapeur (1) selon la revendication 1, caractérisée en ce qu'un rapport de la section de passage du canal de vapeur (18) à la section de passage du canal de sortie de vapeur (4) équivaut au moins en partie à au moins 1,5, et sera en particulier situé dans un intervalle compris entre 2,5 et 3,5.
  3. Unité de production de vapeur (1) selon l'une des revendications 1 ou 2, caractérisée en ce que le canal de vapeur (18) présente une section de passage dans un intervalle compris entre 175 mm2 et 325 mm2 et/ou le canal de sortie de vapeur (4) présente une section de passage dans un intervalle compris entre 25 mm2 et 50 mm2.
  4. Unité de production de vapeur (1) selon l'une des revendications 1 à 3, caractérisée en ce que le canal de vapeur (18) est raccordé à une entrée de vapeur (14) conduisant à un espace de cuisson (G), l'entrée de vapeur (14) présentant une section réduite par rapport au canal de vapeur (18), en particulier une section de passage réduite d'un facteur allant de 0,25 à 0,4.
  5. Unité de production de vapeur (1) selon l'une des revendications précédentes, caractérisée en ce que l'unité de détection du niveau de remplissage (7) est côté vapeur raccordée fluidiquement à un côté inférieur du canal de vapeur (18).
  6. Unité de production de vapeur (1) selon l'une des revendications précédentes, caractérisée en ce que l'unité de détection du niveau de remplissage (7) comprend au moins un flotteur, lequel fait commuter par proximité au moins un contact à lames souples (10, 11).
  7. Unité de production de vapeur (1) selon l'une des revendications précédentes, caractérisée en ce que l'unité de production de vapeur (1) peut se trouver sur une paroi arrière, en particulier sur une paroi arrière intermédiaire (RW) de l'appareil électroménager (D).
  8. Unité de production de vapeur (1) selon l'une des revendications précédentes, caractérisée en ce que l'unité de production de vapeur (1) peut être raccordée côté vapeur à une entrée de vapeur (14) conduisant à un espace de cuisson (G), l'entrée de vapeur (14) pouvant se trouver sur le bord supérieur d'une paroi arrière de l'espace de cuisson (G) ou sur un recouvrement de l'espace de cuisson.
  9. Unité de production de vapeur (1) selon l'une des revendications précédentes, caractérisée en ce que l'unité de production de vapeur (1) peut être hydrauliquement raccordée côté entrée à un réservoir d'eau (17), le réservoir d'eau (17) pouvant se trouver au-dessus d'un espace de cuisson (G).
  10. Procédé de production de vapeur d'eau (V) pour un appareil de cuisson, en particulier un cuiseur vapeur (D) au moyen d'une unité de production de vapeur (1), caractérisé en ce que
    - l'unité de production de vapeur (1) est une unité de production de vapeur (1) selon l'une des revendications précédentes,
    - la vapeur d'eau (V) produite s'écoule premièrement par un canal de sortie de vapeur (4) présentant une section de passage réduite, puis par un canal de vapeur (18) présentant une section de passage plus grande, et
    - le condensat (K) se formant derrière le canal de sortie de vapeur (4) s'écoule essentiellement dans une unité de détection du niveau de remplissage (7).
  11. Procédé selon la revendication 10, caractérisé en ce que le niveau de remplissage dans l'unité de production de vapeur (1) est régulé de manière que dans l'unité de détection du niveau de remplissage (7), un flotteur fait commuter un contact à lames souples (10) inférieur quand une hauteur de niveau de remplissage (Nu) inférieure est atteinte, et dès ce moment, de l'eau est amenée à l'unité de production de vapeur (1) jusqu'à ce que le flotteur fasse commuter un contact à lames souples (11) supérieur lorsqu'une hauteur de niveau de remplissage (No) supérieure est atteinte.
  12. Procédé selon la revendication 10, caractérisé en ce que le niveau de remplissage dans l'unité de production de vapeur (1) est régulé de manière que dans l'unité de détection du niveau de remplissage (7), un flotteur fait commuter un contact à lames souples (10) quand une hauteur de niveau de remplissage (Nu) prédéterminée est atteinte, et dès ce moment, l'unité de production de vapeur (1) se remplit d'eau pendant une durée prédéterminée.
  13. Procédé selon la revendication 10, caractérisé en ce que le niveau de remplissage dans l'unité de production de vapeur (1) est régulé de manière que l'unité de production de vapeur (1) se remplit d'eau jusqu'à ce qu'un flotteur se trouvant dans l'unité de détection du niveau de remplissage (7) fasse commuter un contact à lames souples (11) dès qu'une hauteur de niveau de remplissage (No) prédéterminée est atteinte, et dès ce moment, le remplissage s'interrompt, le remplissage reprenant quand une quantité d'eau prédéterminée s'est évaporée.
EP10194438.7A 2009-12-22 2010-12-10 Unité de production de vapeur pour un appareil ménager et procédé de production de vapeur d'eau Active EP2369227B1 (fr)

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DE102009055144A DE102009055144A1 (de) 2009-12-22 2009-12-22 Dampferzeugungseinheit für ein Haushaltsgerät und Verfahren zum Erzeugen von Wasserdampf

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DE102014110963A1 (de) * 2014-08-01 2016-02-04 Rational Ag Dampfgenerator insbesondere für ein Gargerät
DE102014112521A1 (de) * 2014-09-01 2016-03-03 Miele & Cie. Kg Gargerät
KR102226003B1 (ko) 2014-09-02 2021-03-10 삼성전자주식회사 조리기기
CN107105939B (zh) 2015-01-23 2020-12-04 博姆达株式会社 加热烹调装置
US9788679B2 (en) 2015-06-29 2017-10-17 Whirlpool Corporation Steam generation system for use in cooking appliance
TR201619866A2 (tr) * 2016-12-28 2018-07-23 Arcelik As Buhar üreteci̇ i̇çeren bi̇r firin
DE102017114523A1 (de) * 2017-06-29 2019-01-03 Rational Aktiengesellschaft Dampferzeuger für ein Gargerät
KR102060356B1 (ko) * 2018-04-12 2019-12-30 엘지전자 주식회사 조리기기
EP4050267A1 (fr) 2021-02-25 2022-08-31 Electrolux Appliances Aktiebolag Four de cuisson
DE102021201861A1 (de) 2021-02-26 2022-09-01 BSH Hausgeräte GmbH Verdampfer für ein Dampfgargerät, welcher eine Überlaufvorrichtung aufweist, sowie Dampfgargerät

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FR2625794B1 (fr) 1988-01-08 1990-05-04 Bourgeois Ste Coop Production Generateur de vapeur d'eau pour appareil de cuisson
IT1269878B (it) * 1994-06-01 1997-04-15 Teuco Guzzini Srl Caldaia per la produzione di vapore
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US20030016952A1 (en) * 2001-07-10 2003-01-23 Elphee David Andrew Low-maintenance humidifier
EP1479970A1 (fr) * 2003-05-22 2004-11-24 Commital-Sami S.p.A. Chaudière pour la production de vapeur dans des appareils électroménagers et appareils professionelles, comme dispositifs de repassage ou nettoyage ou similaire
DE102006050367A1 (de) 2006-10-25 2008-04-30 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Durchführen eines Garprozesses mit einem Dampfgargerät

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EP2369227A3 (fr) 2018-01-24
EP2369227A2 (fr) 2011-09-28
DE102009055144A1 (de) 2011-06-30

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