EP2298140B1 - Emetteur de vapeur pour un appareil ménager - Google Patents

Emetteur de vapeur pour un appareil ménager Download PDF

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Publication number
EP2298140B1
EP2298140B1 EP20100401162 EP10401162A EP2298140B1 EP 2298140 B1 EP2298140 B1 EP 2298140B1 EP 20100401162 EP20100401162 EP 20100401162 EP 10401162 A EP10401162 A EP 10401162A EP 2298140 B1 EP2298140 B1 EP 2298140B1
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EP
European Patent Office
Prior art keywords
water
steam
steam generator
monitoring device
region
Prior art date
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Active
Application number
EP20100401162
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German (de)
English (en)
Other versions
EP2298140A3 (fr
EP2298140A2 (fr
Inventor
Uwe Berger
Andreas Rüter
Thomas Metz
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP2298140A2 publication Critical patent/EP2298140A2/fr
Publication of EP2298140A3 publication Critical patent/EP2298140A3/fr
Application granted granted Critical
Publication of EP2298140B1 publication Critical patent/EP2298140B1/fr
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Classifications

    • 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
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • 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
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • F22B1/285—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs the water being fed by a pump to the reservoirs
    • 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
    • F22B37/78—Adaptations or mounting of level indicators

Definitions

  • Such a steam generator for a household appliance is from the EP 1 658 798 A1 known.
  • the steam generator has an obliquely placed opposite the horizontal mounting position of the steam generator evaporator surface. Different water levels above the evaporator surface are established above this evaporator surface in the case of a steam generator filled with water. At the location of the lowest water level, a temperature sensor for level monitoring is arranged in the evaporator surface. If the water level is too low, the evaporator surface in this area will no longer be covered by water. The overheating of this part of the surface is detected by the temperature sensor and evaluated for controlling the water supply. The overheating of the evaporator surface or the drying of the heating surface leads to increased lime deposits on the evaporator surface.
  • the invention raises the problem of designing a steam generator for a household appliance with low volume and high heating power or steam power, which is designed for continuous steam generation and in which a dry-running of the heater is reliably avoided.
  • the achievable with the present invention consist in the structural design and arrangement of the steam generator, by which it is possible to allow high flow rates of steam for a continuous and constant steam generation with low volume and high heat output of the steam generator.
  • the particular advantage of the invention lies in the arrangement of the level monitoring device in the region of the evaporator chamber of the steam generator, in which only a small to no flow intensity of the vapor forms over the evaporator surface. As a result, a lack of water above the evaporator surface can be sensed directly at the point at which a decreasing water level above the evaporator surface is first detectable.
  • the entrainment of droplets in the vapor stream is in particular by the inclined with respect to the horizontal orientation of the evaporator surface and the arrangement of the connection for the water supply and the vapor discharge and the oppositely arranged level monitor, which is arranged in the region in which a maximum Water level at non-moving water surface over the evaporator surface forms. Due to the inclination of the evaporator surface results in non-moving water surface, a linearly rising water level over the evaporator surface.
  • the fill level monitoring device is arranged in the region in which, when the water surface is not moved, a maximum fill level is established above the evaporator surface. This situation corresponds to the area in steam operation in which only a small to no steam flow is formed.
  • FIG. 1 is a Dampfgarêt 1 for pressureless steam cooking as an example of the use of a steam generator 2 according to the invention (see FIG. 2 ) in a household appliance.
  • the steam generator 2 according to the invention can also be used for household appliances such as beverage makers, laundry treatment appliances, floor care appliances and steam cleaning appliances.
  • the Dampfgar réelle 1 is formed with a water tank 3, which is arranged laterally and outside of the cooking chamber 4.
  • the Dampfgar réelle 1 has a downwardly hinged door 5, which can be used as a storage area and covers the water tank 3 in the closed state.
  • Above the cooking chamber 4, the steam cooker is formed with a control panel 6, the controls 7 has to adjust the operating modes.
  • the evaporator surface 13 within the steam generator 2 obliquely. It is also possible to achieve the defined inclination of the evaporator surface 13 with respect to the horizontal H by an obliquely arranged arrangement of the steam generator and an obliquely arranged arrangement of the evaporator surface 13 within the steam generator 2.
  • FIG. 3 a longitudinal section through the steam generator 2 is shown in a perspective view.
  • the inclination of the evaporator surface 13 relative to the horizontal is realized in the embodiment shown here by an oblique arrangement of the steam generator 2 on the device.
  • the steam generator 2 has approximately the shape of a rectangular column.
  • the steam generator 2 is formed on its opposite the horizontal H higher first end face with a connection 10 for the supply of water and with at least one connection 11 for the discharge of steam.
  • the level monitoring device 12 is arranged in the area of this end face opposite end portion of the rectangular column.
  • the measuring point of the filling level monitoring device 12 for the minimum level above the evaporator surface 13 is set at a level that makes a difference Y of the water level from the level in the region of the water inlet, wherein the dimension Y is dimensioned such that over the longitudinal extent of the evaporator surface a slope the height of the water columns over the respective sections of the evaporator surface 13 of about 1 ° sets.
  • the height of the water column in the water inlet region is adjusted to a water level of about 0 to 3mm above the evaporator surface 13 due to the inclination of the steam generator 2.
  • the height of the water level in the area of the level monitoring device 12 is set to a higher level of about 5 to 8mm.
  • connection 11 for the steam discharge protrudes with a pipe-shaped nozzle 16 into the output area for the steam (steam extraction space).
  • a further element for droplet separation is formed for drops dripping off on the top surface of the upper shell 2.2.
  • the evaporator surface 13 is constantly cooled by the incoming water. As a result, boiling of the water in this region of the evaporator surface 13 is avoided and thus prevents dripping by boiling water. Since the connection 11 for the steam discharge is arranged above this area, the volume available for the droplet deposition in the evaporator space is increased by this cooled section of the steam generator 2.
  • FIG. 5 shows the Looking at the end portion of the steam generator 2 with the terminals 10 and 11. In the embodiment shown here, two connections 11 for the steam discharge above the connection 10 for the water supply at the front end of the upper shell 2.1 of the steam generator 2 are arranged.
  • the drawn horizontal H corresponds to a water level above the evaporator surface 13 when the water surface is not agitated.
  • this retirement of the water surface is not achieved.
  • an area with increased bubble formation due to boiling water will form on account of the water level increasing linearly in the direction of the level monitoring device 12 with respect to the longitudinal extension of the evaporator surface 13 in the middle section of the evaporator surface 13. From this range, the intensity of the vapor flow increases in the direction of the port 11 for the vapor outlet. In the area of the level monitoring device 12, only a small to no flow velocity is present in comparison and the water surface is relatively calm.
  • a baffle 17 arranged in front of the level monitoring device 12 for calming the water surface.
  • the water is pressed on the evaporator surface 13 by the steam flow in the direction of steam outlet. If the pumping power for the water supply is set too low, the water level, due to the flow, will first drop in the area of the fill level monitoring device 12, since the water will be forced upwards in the direction of the steam outlet due to the flow contrary to the inclination of the inclined position of the evaporator surface 13. Due to the arrangement of the level monitoring device 12 in the region of the steam generator with the lowest to no flow intensity of the steam, the level monitoring device 12 will early sense a lack of water here.
  • FIG. 2 . 3 and 4 show that the lower shell 2.2 is formed with a connection 18 for a line for returning unused water into the water tank 3, which is removably arranged in the receptacle 3.1.
  • This water return line is formed with a valve device, not shown, which closes the connection 18 during steam operation or during a descaling process. Due to the inclination of the evaporator surface 13 dissolved lime deposits are transported to the terminal 18 and can be disposed of via the removable water tank 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Cookers (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Irons (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Claims (9)

  1. Générateur de vapeur (2) pour un appareil électroménager avec un compartiment d'évaporateur auquel sont raccordés, pour transporter des flux, un raccord (10) pour l'alimentation en eau et au moins un raccord (11) pour la dérivation de vapeur, et avec une surface d'évaporateur (13) pouvant être chauffée et disposée obliquement par rapport à l'horizontale (H) dans la position de montage, surface au-dessus de laquelle est constitué un compartiment d'évaporateur pour la vapeur produite et dans lequel il se constitue un flux de vapeur dans la direction de l'évacuation de vapeur (11),
    l'amenée d'eau vers la surface d'évaporateur (13) pouvant être commandée ou réglée par le biais d'une vanne ou d'une pompe disposée dans la conduite d'alimentation, et le niveau d'eau sur la surface d'évaporateur (13) étant détecté au moyen d'un dispositif de contrôle de niveau (12) et analysé pour la commande de l'apport d'eau vers la surface d'évaporateur (13),
    caractérisé en ce que
    dispositif de surveillance du niveau de remplissage (12) est disposé dans la zone du compartiment d'évaporateur du générateur de vapeur (2), dans lequel seule une intensité de flux de vapeur faible à nulle se constitue sur la surface d'évaporateur (13), et
    en ce que le générateur de vapeur (2) présente approximativement la forme d'une colonne rectangulaire, l'au moins un raccord (11) pour la dérivation de vapeur ainsi que le raccord (10) pour l'amenée d'eau étant disposés sur un premier côté frontal situé plus haut par rapport à l'horizontale (H), et dispositif de surveillance du niveau de remplissage (12) étant disposé dans la zone du tronçon final de la colonne rectangulaire situé en face de ce côté frontal, et
    en ce que le générateur de vapeur (2) et/ou la surface d'évaporateur (13) sont, dans la position de montage, disposés obliquement par rapport à l'horizontale (H) de telle façon que, en partant de la zone d'amenée d'eau, sur l'étendue longitudinale de la surface d'évaporateur (13), en direction du dispositif de contrôle de niveau (12), il s'installe sur la surface d'évaporateur (13), pour un niveau de remplissage minimal, un niveau d'eau qui augmente linéairement si la surface de l'eau n'est pas agitée, et
    en ce que dispositif de surveillance du niveau de remplissage (12) est disposé dans la zone dans laquelle s'installe un niveau de remplissage maximal sur la surface d'évaporateur (13).
  2. Générateur de vapeur (2) pour un appareil électroménager selon la revendication 1,
    caractérisé en ce que
    le point de mesure du dispositif de contrôle de niveau (12) pour le niveau de remplissage minimal sur la surface d'évaporateur (13) est réglé à un niveau qui représente une différence (Y) du niveau d'eau par rapport au niveau dans la zone de l'amenée d'eau, la dimension (Y) étant dimensionnée de telle sorte que, sur l'étendue longitudinale de la surface d'évaporateur (13), si la surface de l'eau n'est pas agitée, il s'établit un gradient de la hauteur des colonnes d'eau d'environ 1° sur les tronçons respectifs de la surface d'évaporateur.
  3. Générateur de vapeur (2) pour un appareil électroménager selon la revendication 2,
    caractérisé en ce que
    la hauteur de la colonne d'eau dans la zone de l'amenée d'eau, du fait de l'inclinaison du générateur de vapeur (2) et/ou de la surface d'évaporateur (13), s'établit à un niveau d'eau d'environ 0 à 3 mm, et en ce que la hauteur du niveau d'eau dans la zone du dispositif de contrôle de niveau (12) s'établit à un niveau plus élevé d'environ 5 à 8 mm.
  4. Générateur de vapeur (2) pour un appareil électroménager selon une des revendications 1 à 3,
    caractérisé en ce que
    le générateur de vapeur (2) est constitué en deux parties et présente une coque supérieure (2.1) et une coque inférieure (2.2), la coque inférieure (2.2) comprenant la surface d'évaporateur avec l'élément chauffant (14) affecté et la coque supérieure (2.1) entourant le compartiment d'évaporateur.
  5. Générateur de vapeur (2) pour un appareil électroménager selon la revendication 4,
    caractérisé en ce que
    la coque supérieure (2.1) présente, sur un premier tronçon extrême côté frontal, les raccordements pour l'alimentation en eau (10) et pour la dérivation de vapeur (11), et en ce que dispositif de surveillance du niveau de remplissage (12) est disposé dans la zone du tronçon extrême opposé.
  6. Générateur de vapeur (2) pour un appareil électroménager selon la revendication 4 ou 5,
    caractérisé en ce que
    les zones des raccordements pour l'alimentation en eau (10) et pour la dérivation de vapeur (11) sont disposées séparées dans l'espace les uns des autres par un séparateur de gouttes (15), ce qui fait qu'un espace d'amenée d'eau est constitué dans la coque inférieure (2.2) et qu'un espace de prélèvement de vapeur est constitué dans la coque supérieure (2.1).
  7. Générateur de vapeur (2) pour un appareil électroménager selon une des revendications 4 à 6,
    caractérisé en ce que des séparateurs de gouttes (15.2) sont disposés sur la coque supérieure (2.1) et font saillie à l'intérieur du compartiment d'évaporateur.
  8. Générateur de vapeur (2) pour un appareil électroménager selon une des revendications 4 à 7,
    caractérisé en ce que,
    dans la zone du dispositif de contrôle de niveau (12), le générateur de vapeur (2) est constitué avec un brise-flot (17).
  9. Générateur de vapeur (2) pour un appareil électroménager selon la revendication 5,
    caractérisé en ce que
    le raccord (11) est constitué avec une tubulure (16) de forme tubulaire qui fait saillie à l'intérieur de l'espace de prélèvement de vapeur.
EP20100401162 2009-09-18 2010-09-09 Emetteur de vapeur pour un appareil ménager Active EP2298140B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910044053 DE102009044053A1 (de) 2009-09-18 2009-09-18 Dampferzeuger für ein Haushaltsgerät

Publications (3)

Publication Number Publication Date
EP2298140A2 EP2298140A2 (fr) 2011-03-23
EP2298140A3 EP2298140A3 (fr) 2011-07-06
EP2298140B1 true EP2298140B1 (fr) 2013-07-31

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ID=43437237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100401162 Active EP2298140B1 (fr) 2009-09-18 2010-09-09 Emetteur de vapeur pour un appareil ménager

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EP (1) EP2298140B1 (fr)
DE (1) DE102009044053A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015215768A1 (de) 2015-08-19 2017-02-23 BSH Hausgeräte GmbH Haushalts-Dampfgargerät

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2650615B2 (fr) * 2012-04-11 2024-05-15 Electrolux Home Products Corporation N.V. Four pour la cuisson de produits alimentaires
DE102014203537A1 (de) 2014-02-27 2015-10-01 BSH Hausgeräte GmbH Verdampfer
DE102014206281A1 (de) 2014-04-02 2015-10-08 BSH Hausgeräte GmbH Betreiben eines Verdampfers eines Haushaltsgeräts
DE102014210669A1 (de) 2014-06-05 2015-12-17 BSH Hausgeräte GmbH Verdampfer
DE102014210670A1 (de) * 2014-06-05 2015-12-17 BSH Hausgeräte GmbH Verdampfer
DE102014112521A1 (de) * 2014-09-01 2016-03-03 Miele & Cie. Kg Gargerät
CN108392090B (zh) * 2018-05-25 2023-12-08 广东美的厨房电器制造有限公司 蒸汽发生器和蒸汽烹饪装置
DE102019103783A1 (de) * 2019-02-14 2020-08-20 Rational Aktiengesellschaft Dampferzeuger für ein Gargerät, Gargerät und Verfahren zum Erzeugen von Dampf
CN114321859B (zh) * 2020-09-30 2024-02-27 广东美的厨房电器制造有限公司 蒸汽发生装置、家用器具的主机和家用器具
DE102021211174A1 (de) 2021-10-04 2023-04-06 BSH Hausgeräte GmbH Verdampfer für ein Dampfbehandlungsgerät sowie Haushalts-Dampfbehandlungsgerät
EP4431119A1 (fr) 2023-03-14 2024-09-18 MELAG Medizintechnik GmbH & Co. KG Procédé de régulation du niveau d'eau d'alimentation dans un stérilisateur à vapeur et stérilisateur à vapeur

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Publication number Priority date Publication date Assignee Title
DE19741881C2 (de) 1997-09-23 2002-03-07 Imp Werke Ohg Haushaltgerät zum Dampfgaren
DE19960743A1 (de) 1999-12-16 2001-06-21 Imp Werke Gmbh & Co Haushaltsgerät zum drucklosen Dampfgaren
JP4017534B2 (ja) * 2003-02-03 2007-12-05 三洋電機株式会社 高周波加熱装置
JP4143555B2 (ja) * 2004-02-13 2008-09-03 株式会社パイコーポレーション 過熱蒸気発生装置
JP4229862B2 (ja) * 2004-03-24 2009-02-25 シャープ株式会社 蒸気調理器
JP2005304673A (ja) * 2004-04-20 2005-11-04 Matsushita Electric Ind Co Ltd 炊飯器
JP2006110132A (ja) * 2004-10-15 2006-04-27 Matsushita Electric Ind Co Ltd 炊飯器
DE602004019658D1 (de) 2004-11-19 2009-04-09 Whirlpool Co Dampferzeuger für Gargeräte
KR101041077B1 (ko) * 2006-09-28 2011-06-13 삼성전자주식회사 스팀발생장치 및 이를 갖는 가열조리장치
DE102007048200A1 (de) 2007-10-08 2009-04-09 Miele & Cie. Kg Haushaltsgerät mit einer Bedienblende und mit einem Tank zur Aufnahme eines Fluids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015215768A1 (de) 2015-08-19 2017-02-23 BSH Hausgeräte GmbH Haushalts-Dampfgargerät

Also Published As

Publication number Publication date
EP2298140A3 (fr) 2011-07-06
DE102009044053A1 (de) 2011-05-05
EP2298140A2 (fr) 2011-03-23

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