EP1426692B1 - Four à micro-ondes - Google Patents

Four à micro-ondes Download PDF

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Publication number
EP1426692B1
EP1426692B1 EP20030027247 EP03027247A EP1426692B1 EP 1426692 B1 EP1426692 B1 EP 1426692B1 EP 20030027247 EP20030027247 EP 20030027247 EP 03027247 A EP03027247 A EP 03027247A EP 1426692 B1 EP1426692 B1 EP 1426692B1
Authority
EP
European Patent Office
Prior art keywords
frame
door
microwave oven
oven according
gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030027247
Other languages
German (de)
English (en)
Other versions
EP1426692A3 (fr
EP1426692A2 (fr
Inventor
Eckhard Pöhler
Joachim Render
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
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1426692A2 publication Critical patent/EP1426692A2/fr
Publication of EP1426692A3 publication Critical patent/EP1426692A3/fr
Application granted granted Critical
Publication of EP1426692B1 publication Critical patent/EP1426692B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • H05B6/763—Microwave radiation seals for doors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus

Definitions

  • the invention relates to a microwave oven referred to in the preamble of claim 1 Art.
  • Such microwave ovens are well known and are offered, for example, under the type designation M611S of the company. Cefemo from France.
  • the known microwave oven has a body and a door, wherein the door includes a closed door frame and a lens arranged on this.
  • a throttle profile made of metal is arranged, which has a circumferential, substantially U-shaped base body and a frame, the latter being arranged on the inner side wall of the U-shaped base body and with the door closed the body facing the opening of the U shaped main body except for a first gap between the free edge of the frame and the outer side wall of the U-shaped base body covers.
  • the throttle profile is covered by a plastic frame such that when the door is closed the body facing surfaces of plastic frame and lens are flush with each other.
  • the production-related gap between the plastic frame and the lens is filled by an adhesive.
  • the DE 86 06 301 U1 discloses a microwave oven having a body and a door including a closed door frame and a lens disposed thereon, and having a throttle profile made of metal disposed in the door frame and having a circumferential substantially U-shaped body and a frame.
  • the door with the frame is designed such that the frame to the outer side wall of the U-shaped body a first gap and the lens covers the frame such that the edge of the lens and the outer side wall of the U-shaped body of the throttle profile a second gap form.
  • the JP 2002 110340 A discloses a microwave oven having a door comprising a throttle profile disposed in the door frame.
  • the frame has circumferentially seen from the free edge of recesses.
  • the invention thus presents the problem of specifying a microwave oven in which the overall visual impression and the ease of cleaning of the door are improved.
  • a microwave oven with integrated in the body throttle profile in which a trained as additional plate made of plastic first lens, formed as a metal plate and perforated in the viewing area sheet metal and designed as a glass plate second lens completely cover the throttle profile together as a composite plate.
  • the microwaves can enter the throttle profile arranged in the body through a seal formed as a plastic cover.
  • this arrangement is not transferable to a microwave oven having a throttle profile disposed in the door because the microwaves would be shielded by the composite plate during operation of the microwave oven and could not enter the throttle profile, so that the function of the throttle profile would not exist as a microwave trap.
  • the viewing window is designed as a hardened glass pane.
  • the ease of cleaning the lens is further improved, so that even aggressive cleaning agents can be used to eliminate strong adhering dirt.
  • the temperature resistance of the viewing window is improved in this way, so that the microwave oven according to the invention can also be equipped with the "grill" operating mode customary in ovens.
  • a further advantageous development of the teaching according to the invention provides that the width of the second gap is between about 5 mm and about 8 mm. In laboratory experiments, it has been found that a width of the second gap lying approximately in this region causes a significant reduction of the microwave leakage radiation.
  • the width of the first gap is between about 10 mm and about 11 mm. In the laboratory tests already mentioned, it has also been found that a width of the first gap lying approximately in this region causes a further reduction of the microwave leakage radiation.
  • a further advantageous development of the aforementioned embodiment provides that the width of the recesses is between about 3 mm and about 5 mm. In this way, the microwave leakage radiation can be further reduced.
  • the frame is designed as the edge section of a sheet which partially covers the throttle profile, the sheet being designed as a perforated sheet except for the area of the edge portion.
  • An advantageous development of the aforementioned embodiment provides that the lens is firmly connected by means of an adhesive to the sheet, wherein the sheet for receiving the adhesive in the region of the edge portion has a circumferential recess. In this way, a particularly simple and inexpensive connection of lens and sheet metal is realized.
  • a particularly advantageous development of the teaching according to the invention provides that the second gap is covered by a circumferential seal whose material and / or cross-sectional dimensions are such that the entry of the microwaves in the throttle profile is not significantly affected.
  • the dirt susceptibility of the door is further reduced at the same time with a single component and achieved a substantially airtight sealing of the cooking chamber with the door closed, so that the microwave oven according to the invention can also be equipped with the usual in ovens operating mode "hot air".
  • the viewing window has a coating in the region with which it covers the frame in the assembled state of the door. In this way, the overall visual impression of the door is further improved.
  • a further advantageous embodiment provides that connects to the opening of the U-shaped base body facing edge of the outer side wall, an end face of the door frame, which is substantially flush with the closed door with the body facing surface of the lens. This is at the same time the optical Overall impression of the door and the ease of cleaning further improved and further reduces the susceptibility to soiling.
  • Fig. 1 is an embodiment of a microwave oven according to the invention without viewing window with a view of a closed door 2 a body, not shown, facing inside door side shown in partial view.
  • the door 2 has a centrally arranged see-through area 4 and a closed door frame 5, wherein in the door frame 5, a throttle profile 6 is arranged made of metal, which has a in Fig. 1 only partially visible circumferential and substantially U-shaped body 6.1 and 6.2 has a frame.
  • the frame 6.2 partially covers the opening of the U-shaped main body 6.1 facing the body when the door 2 is closed, so that a first gap 10 is formed between the free edge of the frame 6.2 and the outer side wall 6.1.1 of the U-shaped main body 6.1 ,
  • the width of the first gap 10 is about 10.5 mm.
  • the width of the first gap 10 may be between about 10 mm and about 11 mm.
  • Fig. 2 shows the door 2 off Fig. 1 with the lens 12 in the same representation.
  • the viewing window 12 formed as a hardened glass pane covers both the in Fig. 2 invisible viewing area of the door 2 as well as the frame 6.2 of the throttle profile 6.
  • the edge of the lens 12 and the outer side wall 6.1.1 of the U-shaped body 6.1 form a second gap 14, the width of which is about 5 mm in this embodiment.
  • the width of the second gap 14 may be between about 5 mm and about 8 mm.
  • FIG. 1 selected representation, which shows a frame 6.2 without recesses for the sake of clarity, are provided in the present embodiment in the frame 6.2 recesses 6.2.1, see Fig. 3 ,
  • Fig. 3 shows the door 2 in a detailed view in the region of the throttle profile 6 in partial representation.
  • the frame 6.2 is formed in this embodiment as the throttle profile 6 partially covering edge portion of a sheet 16.
  • the sheet 16 is in the centrally arranged viewing area 4 of the door 2 except for the area of the edge portion as in Fig. 3 not shown perforated plate formed.
  • the sheet 16 has a circumferential recess 16.1.
  • the plate 16 is connected to the person skilled in the well-known manner with the inner side wall 6.1.2 of the U-shaped body 6.1. How out Fig. 3 it can be seen, the free edge of the frame 6.2 forms with the outer side wall 6.1.1, the first gap 10.
  • the lens 12 is held on this.
  • connection between the metal sheet 16 and the lens 12 can be selected within wide suitable limits.
  • both detachable and non-detachable connection techniques are possible.
  • the lens 12 is connected by means of a introduced into the recess 16.1 silicone adhesive as an adhesive inextricably with the plate 16.
  • the second gap 14 is less than the width of the first gap 10.
  • the depth of the circumferentially arranged in the 6.2 6.2 recesses 6.2.1, which extend from the free edge of the frame 6.2 substantially perpendicular to this, here is about 15 mm.
  • the width of the arranged in the frame 6.2 recesses 6.2.1 is alternating in this embodiment and is based on the Fig. 5 explained in more detail.
  • the throttle profile 6 and here in particular the frame 6.2 with its recesses 6.2.1 is largely invisible to the user, the lens 12 in the area with which this covers the frame 6.2 in the assembled state of the door 2, designed as a printing not shown coating.
  • other coating techniques known to those skilled in the art are applicable.
  • the door frame 5 of the exemplary embodiment has an end face 5.1 adjoining the opening of the U-shaped basic body 6.1 of the outer side wall 6.1.1, which is substantially flush with the surface of the viewing window 12 facing the body when the door 2 is closed runs.
  • Fig. 4 is in addition to the already explained in more detail door 2 and the body 18 of the microwave oven according to the invention partially shown.
  • a first door gap 19 is formed between the opposite with the door closed 2 surfaces of the door frame 5, namely end face 5.1, and the body 18, respectively, between this and the lens 12, a first door gap 19, respectively.
  • the width of the first door gap 19 is substantially equal to that of the second door gap 20.
  • the width of the first and second door gap 19, 20 is about 1.5 mm.
  • the widths of the door gaps 19, 20, for example, to about 1 mm could be omitted in the microwave oven according to the invention may be arranged in the frame 6.2 recesses 6.2.1.
  • Fig. 5 shows the plate 16 of the above embodiment in partial representation, with the frame 6.2 as its edge portion.
  • the sheet 16 is formed to the region of the edge portion as a review permitting perforated plate.
  • the already explained recess 16.1 is arranged in the region of the edge portion.
  • the widths of the circumferentially arranged in the frame 6.2 recesses 6.2.1 are formed alternately in the present embodiment.
  • recesses are arranged with about 3 mm wide and about 5 mm wide periodically.
  • recesses On the two longitudinal sides of the frame 6.2 with the larger edge length is followed on two juxtaposed recesses with about 3 mm width periodically a recess with about 5 mm wide.
  • a recess with a width of about 5 mm is arranged in each case. Deviating from this embodiment, however, other combinations are conceivable.
  • the door 2 is partially shown in two different cross sections.
  • the second gap 14 is covered by a peripheral seal formed as a silicone seal 22, so that the transition region between the first and the second door gap 19, 20 with the door closed 2 substantially airtight is closed.
  • the seal 22 must be designed so that the entry of the microwaves in the throttle profile 6 is not significantly affected, which here by a from the 6 and 7 apparent constructive design is guaranteed.
  • the seal 22 consists of a in the assembled state of the door 2 in the second gap 14 engaging projection 24, see Fig.
  • a sealing strip 26 formed in a triangular manner in cross-section and a plurality of fastening hooks 28 distributed over the circumferential seal 22 and formed thereon, which in the assembled state of the door 2 comprise the edge of the viewing window 12. Due to the remaining free cross section between the protruding on the free edge of the window 12 projection 24 and the outer side wall 6.1.1 of the U-shaped body 6.1, the low material thickness of the triangular sealing strip 26 and the only sporadically arranged attachment hooks 28 is the function the throttle profile as a microwave trap despite the covered by the seal 22 second gap 14 ensures.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Claims (11)

  1. Four à micro-ondes, avec un corps (18) et une porte (2) qui comporte un cadre de porte (5) et une vitre transparente (12) disposée sur ce cadre, et avec un profilé de bobine d'arrêt (6) en métal qui est disposé dans le cadre de porte (5) et qui présente un élément de base (6.1) périphérique sensiblement en U et un cadre (6.2), ce dernier étant disposé sur la paroi latérale intéricure (6.1.2) de l'élément de base (6.1) en U et recouvrant, quand la porte (2) est fermée, l'ouverture, tournée vers le corps (18), de l'élément de base (6.1) en U jusqu'à un premier interstice (10) entre le bord libre du cadre (6.2) et la paroi latérale extérieure (6.1.1), de l'élément de base (6.1) en U,
    la vitre transparente (12) recouvrant le cadre (6.2) de telle sorte que le bord de la vitre transparente (12) et la paroi latérale extérieure (6.1.1) de l'élément de base (6.1) en U du profilé de bobine d'arrêt (6) forment un deuxième interstice (14),
    caractérisé en ce que,
    dans le cadre (6.2), il est disposé des évidements (6.2.1) de façon périphérique qui, en partant du bord libre du cadre (6.2), s'étendent sensiblement perpendiculairement à celui-ci, les évidements (6.2.1) disposés de façon périphérique alternant sur leur largeur.
  2. Four à micro-ondes selon la revendication 1,
    caractérisé en ce que
    la vitre transparente (12) est réalisée comme une vitre en verre trempé.
  3. Four à micro-ondes selon une des revendications 1 ou 2,
    caractérisé en ce que
    la largeur du deuxième interstice (14) est comprise entre environ 5 mm et environ 8 mm.
  4. Four à micro-ondes selon au moins une des revendications 1 à 3,
    caractérisé en ce que
    la largeur du premier interstice (10) est comprise entre environ 10 mm et environ 11 mm.
  5. Four à micro-ondes selon la revendication 1,
    caractérisé en ce que
    la profondeur des évidements (6.2.1) est d'environ 15 mm.
  6. Four à micro-ondes selon au moins une des revendications 1 ou 5,
    caractérisé en ce que
    la largeur des évidements (6.2.1) est comprise entre environ 3 mm et environ 5 mm.
  7. Four à micro-ondes selon au moins une des revendications 1 à 6,
    caractérisé en ce que
    le cadre (6.2) est réalisé comme le tronçon de bord d'une tôle (16) qui recouvre partiellement le profilé de bobine d'arrêt (6), la tôle (16) étant réalisée en tant que tôle perforée jusqu'à la zone du tronçon de bord.
  8. Four à micro-ondes selon la revendication 7,
    caractérisé en ce que
    la vitre transparente (12) est raccordée fermement à la tôle (16) au moyen d'une colle, la tôle (16) présentant, dans la zone du tronçon de bord, un creux (16.1) périphérique pour recevoir la colle.
  9. Four à micro-ondes selon au moins une des revendications 1 à 8,
    caractérisé en ce que
    le deuxième interstice (14) est recouvert par un joint d'étanchéité (22) périphérique dont le matériau et/ou les dimensions de section transversale sont tels que l'entrée des micro-ondes dans le profilé de bobine d'arrêt (6) n'est pas sensiblement gênée.
  10. Four à micro-ondes selon au moins une des revendications 1 à 9,
    caractérisé en ce que
    la vitre transparente (12) présente un revêtement dans la zone avec laquelle cette vitre, dans l'état monté de la porte (2), recouvre le cadre (6.2).
  11. Four à micro-ondes selon au moins une des revendications 1 à 10,
    caractérisé en ce
    qu'une face frontale (5.1) du cadre de porte (5) se raccorde au bord de la paroi latérale extérieure (6.1.1) qui est tourné vers l'ouverture de l'élément de base (6.1) en U, et en ce que cette face frontale est sensiblement en affleurement avec la face de la vitre transparente (12) qui est tournée vers le corps (18) quand la porte (2) est fermée.
EP20030027247 2002-12-03 2003-11-28 Four à micro-ondes Expired - Lifetime EP1426692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002156624 DE10256624B4 (de) 2002-12-03 2002-12-03 Mikrowellenherd
DE10256624 2002-12-03

Publications (3)

Publication Number Publication Date
EP1426692A2 EP1426692A2 (fr) 2004-06-09
EP1426692A3 EP1426692A3 (fr) 2011-02-16
EP1426692B1 true EP1426692B1 (fr) 2013-04-24

Family

ID=32308969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030027247 Expired - Lifetime EP1426692B1 (fr) 2002-12-03 2003-11-28 Four à micro-ondes

Country Status (2)

Country Link
EP (1) EP1426692B1 (fr)
DE (1) DE10256624B4 (fr)

Families Citing this family (20)

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Publication number Priority date Publication date Assignee Title
DE102004052798B4 (de) * 2004-11-02 2006-08-31 Electrolux Home Products Corp. N.V. Garofen
EP2031938B1 (fr) * 2007-09-03 2013-02-27 Electrolux Home Products Corporation N.V. Système de support à ondes pour porte de four à micro-ondes
EP2271177B1 (fr) * 2009-07-02 2013-02-27 Electrolux Home Products Corporation N.V. Système de support à ondes pour porte de four d'un four à micro-ondes
US10560986B2 (en) 2013-08-20 2020-02-11 Whirlpool Corporation Method for detecting the status of popcorn in a microwave
JP6368371B2 (ja) 2013-12-23 2018-08-01 ワールプール コーポレイション 無線周波数発生器用の遮断回路
JP2017528884A (ja) 2014-09-17 2017-09-28 ワールプール コーポレイション パッチアンテナを介した直接加熱
WO2016144872A1 (fr) 2015-03-06 2016-09-15 Whirlpool Corporation Procédé d'étalonnage d'amplificateur haute puissance pour un système de mesure de puissance radioélectrique
JP7027891B2 (ja) 2015-06-03 2022-03-02 ワールプール コーポレイション 電磁調理のための方法および装置
US11483905B2 (en) 2016-01-08 2022-10-25 Whirlpool Corporation Method and apparatus for determining heating strategies
WO2017119910A1 (fr) 2016-01-08 2017-07-13 Whirlpool Corporation Séparateur isolé pour four à micro-ondes à plusieurs cavités
US10820382B2 (en) 2016-01-28 2020-10-27 Whirlpool Corporation Method and apparatus for delivering radio frequency electromagnetic energy to cook foodstuff
CN108702817B (zh) 2016-02-15 2021-09-10 松下电器产业株式会社 用于传送射频电磁能量以对食料进行烹调的方法和装置
DE102017210730A1 (de) 2017-06-26 2018-12-27 BSH Hausgeräte GmbH Mikrowellen-Gargerät mit Lambda-Viertel-Falle
US10827569B2 (en) 2017-09-01 2020-11-03 Whirlpool Corporation Crispness and browning in full flat microwave oven
US11039510B2 (en) 2017-09-27 2021-06-15 Whirlpool Corporation Method and device for electromagnetic cooking using asynchronous sensing strategy for resonant modes real-time tracking
US10772165B2 (en) 2018-03-02 2020-09-08 Whirlpool Corporation System and method for zone cooking according to spectromodal theory in an electromagnetic cooking device
US11404758B2 (en) 2018-05-04 2022-08-02 Whirlpool Corporation In line e-probe waveguide transition
US10912160B2 (en) 2018-07-19 2021-02-02 Whirlpool Corporation Cooking appliance
DE102019220293A1 (de) 2019-12-19 2021-06-24 BSH Hausgeräte GmbH Haushalts-Mikrowellengerät mit Mikrowellenfalle und Verfahren zu deren Herstellung
DE102021210592A1 (de) 2021-09-23 2023-03-23 BSH Hausgeräte GmbH Garraumtür für ein Mikrowellengargerät sowie Mikrowellengargerät

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Also Published As

Publication number Publication date
DE10256624A1 (de) 2004-07-15
EP1426692A3 (fr) 2011-02-16
EP1426692A2 (fr) 2004-06-09
DE10256624B4 (de) 2005-12-08

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