DE3643307A1 - Lighting device for a microwave oven - Google Patents

Lighting device for a microwave oven

Info

Publication number
DE3643307A1
DE3643307A1 DE19863643307 DE3643307A DE3643307A1 DE 3643307 A1 DE3643307 A1 DE 3643307A1 DE 19863643307 DE19863643307 DE 19863643307 DE 3643307 A DE3643307 A DE 3643307A DE 3643307 A1 DE3643307 A1 DE 3643307A1
Authority
DE
Germany
Prior art keywords
sleeve
lighting device
lamp housing
lamp
outer sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19863643307
Other languages
German (de)
Other versions
DE3643307C2 (en
Inventor
Guenter Dipl Ing Hammerl
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE3606421A external-priority patent/DE3606421C1/en
Application filed by Individual filed Critical Individual
Priority to DE19863643307 priority Critical patent/DE3643307C2/en
Publication of DE3643307A1 publication Critical patent/DE3643307A1/en
Application granted granted Critical
Publication of DE3643307C2 publication Critical patent/DE3643307C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H05B6/6444—Aspects relating to lighting devices in the microwave cavity
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens

Abstract

The lighting device has a lamp housing which is inserted into an opening in the oven wall and consists of an inner metallic sleeve and an outer sleeve concentric thereto. The lamp holder and the lamp are arranged in the inner sleeve while the outer sleeve is mounted in direct metallic contact with the oven wall and makes contact with it. A glass cover is fitted to the lamp housing. In order to prevent the microwave field being unfavourably changed when the glass cover is fitted, a further cylindrical sleeve which consists of paramagnetic material is arranged between the inner sleeve and the outer sleeve. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Beleuchtungseinrichtung für einen Mikrowellen­ herd gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a lighting device for a microwave Stove according to the preamble of claim 1.

Bei der Beleuchtungseinrichtung gemäß dem Hauptpatent hat sich gezeigt, daß mit dem Aufsetzen der aus Glas bestehenden transparenten Abdeckung auf die Frontseite des Lampengehäuses und bei Betrieb des Mikrowellenherdes und damit durch Ein­ bringen dieser Abdeckung in das Mikrowellenfeld vor diesem Lampengehäuse sich die Schwingungsverhältnisse in diesem Bereich verändern und zu einem gewissen Mikro­ wellenaustritt durch die innere Hülse hindurch führen.In the lighting device according to the main patent, it has been shown that with placing the transparent cover made of glass on the front the lamp housing and when operating the microwave oven and thus by On bring this cover in the microwave field in front of this lamp housing Vibration conditions change in this area and to a certain micro Guide the shaft exit through the inner sleeve.

Durch die vorliegende Erfin­ dung soll diese unerwünschte Wirkung vermieden werden. By the present inven This undesirable effect should be avoided.  

Dies erfolgt gemäß der Erfindung durch die im Kennzeichnungsteil des Patentanspru­ ches 1 aufgeführten Maßnahmen. Vorteilhafte Ausgestaltungen der Erfindung erge­ ben sich aus den nachfolgenden Patentansprüchen.This is done according to the invention by the in the characterizing part of claim ches 1 listed measures. Advantageous embodiments of the invention ben from the following claims.

Versuche haben ergeben, daß durch das Vorhandensein der weiteren Hülse aus para­ magnetischem Material, z.B. Edelstahl, das Mikrowellenfeld transformiert wird und wieder in den ursprünglichen Zustand, d.h. in den Zustand des Mikrowellenfeldes oh­ ne Glasabdeckung zurückversetzt wird. Damit ergibt sich mit dem Aufsetzen der Ab­ deckung keine Leckstrahlung mehr. Durch die Anordnung der weiteren Hülse zwi­ schen der inneren und der äußeren Hülse wird die Leuchtwirkung der Beleuchtungs­ einrichtung in keiner Weise beeinträchtigt.Experiments have shown that the presence of the further sleeve from para magnetic material, e.g. Stainless steel, the microwave field is transformed and back to the original state, i.e. in the state of the microwave field oh ne glass cover is set back. This results in the setting of the Ab coverage no longer leak radiation. The arrangement of the additional sleeve between The luminous effect of the lighting becomes the inner and outer sleeve facility in no way affected.

Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispieles nachstehend erläutert.The invention is based on an embodiment shown in the drawing explained below.

In der Zeichnung ist zu erkennen die z.B. rückwärtige Herdwandung 1 der durch eine mikrowellendichte Tür verschließbaren Muffel eines Mikrowellenherdes. Diese metal­ lische Herdwandung 1 besitzt eine Öffnung 2, wobei der Öffnungsrand dieser Öff­ nung 2 zum Ofeninnenraum hin leicht abgekröpft ist. Auf der Rückseite der Herd­ wandung 1, und zwar auf den abgekröpften Öffnungsrand 3 aufgesetzt, ist ein allge­ mein mit 4 bezeichnetes Lampengehäuse. Beim Ausführungsbeispiel besteht dieses Lampengehäuse im wesentlichen aus einer äußeren, ringförmigen Hülse 5 mit Hül­ senflansch 5′, wobei der Durchmesser der äußeren Hülse 5 etwa dem Durchmesser der Öffnung 2 entspricht, und aus einer inneren, ebenfalls metallischen Hülse 6 mit Hülsenflansch 6′, wobei die lichte Weite dieser inneren Hülse geringer ist als die halbe Wellenlänge der Mikrowellenstrahlen. An den Hülsenflanschen 5′, 6′ sind die beiden Hülsen z.B. mittels Schrauben S oder Nieten miteinander fest und dicht ver­ bunden. Die äußere Hülse 5 besitzt ferner einen Kragenflansch 5′′, mit welchem das gesamte Lampengehäuse mit dem abgekröpften Öffnungsrand 3 z.B. unter Zwischen­ lage einer metallisch leitenden Dichtung verbunden ist. In die innere Hülse 6 am rückwärtigen Ende eingesetzt ist eine Lampenfassung 7, in die eine Lampe 8 ein­ setzbar ist, wobei in der eingesetzten Stellung diese Lampe einschließlich ihrer Glühwendeln über die frontseitige Begrenzung der inneren Hülse 6 und den Öffnungs­ rand der Herdwandung 1 leicht hinaus ragt. Mit 9 ist eine linsenförmige, transparen­ te Abdeckung aus Glasmaterial bezeichnet, die im Anschluß an den linsenförmigen Teil einen Befestigungsstutzen 10 besitzt, auf dem eine Schraubwindung 11 ange­ formt ist. Mit dieser Schraubwindung ist die transparente Abdeckung 9 in die äußere Hülse 5 einschraubbar, wozu diese äußere Hülse 5 eine entsprechende Gegenschraub­ windung 12 trägt. An dem vorgenannten Befestigungsstutzen 10 befestigt ist eine weitere, zylindrische Hülse 13, die aus einem paramagnetischen Material, z.B. aus Edelstahl besteht. Diese Hülse besitzt am Umfang Federansätze 14, mit denen diese Hülse 13 am Befestigungsstutzen 10 der gläsernen Abdeckung 9 verrastet und damit fixiert ist. Um eine bestmögliche Ausleuchtung des Ofenraumes zu erhalten, kann die innere Hülse 6 mit einer Perforation versehen sein. Ferner kann die Innenfläche der weiteren Hülse 13 mit einer Licht reflektierenden Oberfläche ausgestattet sein.The drawing shows the rear wall 1 of the oven, for example, of the muffle of a microwave oven, which can be closed by a microwave-proof door. This metallic stove wall 1 has an opening 2 , the opening edge of this opening Publ 2 is slightly bent towards the furnace interior. On the back of the stove wall 1 , and that placed on the cranked opening edge 3 , is a general with my designated 4 lamp housing. In the embodiment, this lamp housing consists essentially of an outer, annular sleeve 5 with sleeve senflansch 5 ', the diameter of the outer sleeve 5 corresponds approximately to the diameter of the opening 2 , and from an inner, also metallic sleeve 6 with sleeve flange 6 ', wherein the inside diameter of this inner sleeve is less than half the wavelength of the microwave rays. On the sleeve flanges 5 ', 6 ', the two sleeves, for example by means of screws S or rivets, are firmly and tightly connected to one another. The outer sleeve 5 also has a collar flange 5 '', with which the entire lamp housing is connected to the cranked opening edge 3, for example with the interposition of a metallic conductive seal. Inserted into the inner sleeve 6 at the rear end is a lamp holder 7 into which a lamp 8 can be placed, and in the inserted position this lamp, including its filaments, slightly beyond the front boundary of the inner sleeve 6 and the opening edge of the hearth wall 1 protrudes. With 9 a lenticular, transparent te cover made of glass material is referred to, which has a connection piece 10 following the lenticular part, on which a screw turn 11 is formed. With this screw turn, the transparent cover 9 can be screwed into the outer sleeve 5 , for which purpose this outer sleeve 5 carries a corresponding counter screw turn 12 . A further, cylindrical sleeve 13 , which consists of a paramagnetic material, for example of stainless steel, is fastened to the aforementioned fastening socket 10 . This sleeve has spring lugs 14 on the circumference, with which this sleeve 13 is latched to the fastening piece 10 of the glass cover 9 and is thus fixed. In order to obtain the best possible illumination of the furnace space, the inner sleeve 6 can be provided with a perforation. Furthermore, the inner surface of the further sleeve 13 can be equipped with a light-reflecting surface.

Claims (3)

1. Beleuchtungseinrichtung für einen Mikrowellenherd, bei dem die Lampenfas­ sung in einem Lampengehäuse angeordnet ist, das eine metallische Hülse mit einer lichten Weite von weniger als der Wellenlänge der in den Garraum ab­ gegebenen Mikrowellen besitzt, die ihrerseits in Kontakt mit der Herdwandung steht, wobei das Lampengehäuse gebildet ist aus einer die Lampenfassung aufnehmenden Hülse und einer mit der inneren Hülse metallisch verbundenen äußeren Hülse, die an der Herdwandung anliegt und befestigt ist und Befe­ stigungsmittel für eine transparente Abdeckung besitzt, nach Patent... (Patentanmeldung P 36 06 421.1), dadurch gekennzeichnet, daß zwischen der inneren Hülse (6) und der äußeren Hülse (5) des Lampengehäu­ ses (4) eine weitere zylindrische Hülse (13) angeordnet ist, die aus einem pa­ ramagnetischen Material besteht.1. Lighting device for a microwave oven, in which the Lampenfas solution is arranged in a lamp housing which has a metallic sleeve with a clear width of less than the wavelength of the microwaves given in the cooking space, which in turn is in contact with the wall of the oven, whereby the lamp housing is formed from a sleeve which receives the lamp holder and an outer sleeve which is metallically connected to the inner sleeve and which lies against the stove wall and is fastened and has fastening means for a transparent cover, according to patent ... (patent application P 36 06 421.1) , characterized in that between the inner sleeve ( 6 ) and the outer sleeve ( 5 ) of the lamp housing ( 4 ) a further cylindrical sleeve ( 13 ) is arranged, which consists of a pa ramagnetic material. 2. Beleuchtungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die weitere Hülse (13) mit der im wesentlichen linsenartigen Abdeckung (9) ver­ bunden ist.2. Lighting device according to claim 1, characterized in that the further sleeve ( 13 ) with the substantially lens-like cover ( 9 ) is connected ver. 3. Beleuchtungseinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die weitere Hülse (13) an einem vorzugsweise ein Schraubgewinde (11/12) tragen­ den Befestigungsstutzen (10) der Abdeckung (9) befestigt ist.3. Lighting device according to claim 2, characterized in that the further sleeve ( 13 ) on a preferably a screw thread ( 11/12 ) carrying the fastening piece ( 10 ) of the cover ( 9 ) is attached.
DE19863643307 1986-02-27 1986-12-18 Lighting device for a microwave oven Expired - Fee Related DE3643307C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863643307 DE3643307C2 (en) 1986-02-27 1986-12-18 Lighting device for a microwave oven

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606421A DE3606421C1 (en) 1986-02-27 1986-02-27 Lighting device for a microwave oven
DE19863643307 DE3643307C2 (en) 1986-02-27 1986-12-18 Lighting device for a microwave oven

Publications (2)

Publication Number Publication Date
DE3643307A1 true DE3643307A1 (en) 1988-06-30
DE3643307C2 DE3643307C2 (en) 1995-08-03

Family

ID=25841395

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863643307 Expired - Fee Related DE3643307C2 (en) 1986-02-27 1986-12-18 Lighting device for a microwave oven

Country Status (1)

Country Link
DE (1) DE3643307C2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809699A1 (en) * 1988-03-23 1989-10-05 Pistor & Boss Gmbh Electric luminaire for stoves, in particular domestic microwave ovens
DE4003736A1 (en) * 1990-02-08 1991-08-14 Miele & Cie Microwave oven lighting with truncated conical reflector housing - gives widely scattered distribution of light from filament lamp through transparent screen into irradiated cooking space
DE4025734A1 (en) * 1990-08-14 1992-02-20 Bosch Siemens Hausgeraete Microwave oven lighting arrangement - has radiation-impermeable reflector in which small holes are made for ends of fluorescent tube without risk of microwave leakage
EP0499044A1 (en) * 1991-02-15 1992-08-19 HERNER GLAS BERND HOFFBAUER GmbH & CO. Leuchten und Industrieglas KG Recessed light fitting
US5149930A (en) * 1989-07-18 1992-09-22 Whirlpool International B.V. Microwave oven with lamp and microwave seal
CN1317531C (en) * 2003-12-09 2007-05-23 三星电子株式会社 Lamp assembly and cooking apparatus having the same
US7380559B2 (en) * 2003-12-16 2008-06-03 Samsung Electronics Co., Ltd. Dishwasher
US8047683B2 (en) 2009-02-27 2011-11-01 Electrolux Home Products, Inc. Lighting device mounting system for household appliance, and associated apparatus and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606421C1 (en) * 1986-02-27 1987-04-09 Bosch Siemens Hausgeraete Lighting device for a microwave oven

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606421C1 (en) * 1986-02-27 1987-04-09 Bosch Siemens Hausgeraete Lighting device for a microwave oven

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809699A1 (en) * 1988-03-23 1989-10-05 Pistor & Boss Gmbh Electric luminaire for stoves, in particular domestic microwave ovens
US5149930A (en) * 1989-07-18 1992-09-22 Whirlpool International B.V. Microwave oven with lamp and microwave seal
DE4003736A1 (en) * 1990-02-08 1991-08-14 Miele & Cie Microwave oven lighting with truncated conical reflector housing - gives widely scattered distribution of light from filament lamp through transparent screen into irradiated cooking space
DE4025734A1 (en) * 1990-08-14 1992-02-20 Bosch Siemens Hausgeraete Microwave oven lighting arrangement - has radiation-impermeable reflector in which small holes are made for ends of fluorescent tube without risk of microwave leakage
EP0499044A1 (en) * 1991-02-15 1992-08-19 HERNER GLAS BERND HOFFBAUER GmbH & CO. Leuchten und Industrieglas KG Recessed light fitting
CN1317531C (en) * 2003-12-09 2007-05-23 三星电子株式会社 Lamp assembly and cooking apparatus having the same
US7380559B2 (en) * 2003-12-16 2008-06-03 Samsung Electronics Co., Ltd. Dishwasher
US8047683B2 (en) 2009-02-27 2011-11-01 Electrolux Home Products, Inc. Lighting device mounting system for household appliance, and associated apparatus and method

Also Published As

Publication number Publication date
DE3643307C2 (en) 1995-08-03

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