EP2285181A1 - A wave choke system for a microwave oven - Google Patents

A wave choke system for a microwave oven Download PDF

Info

Publication number
EP2285181A1
EP2285181A1 EP09010482A EP09010482A EP2285181A1 EP 2285181 A1 EP2285181 A1 EP 2285181A1 EP 09010482 A EP09010482 A EP 09010482A EP 09010482 A EP09010482 A EP 09010482A EP 2285181 A1 EP2285181 A1 EP 2285181A1
Authority
EP
European Patent Office
Prior art keywords
channel
choke system
wave choke
side wall
microwave oven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09010482A
Other languages
German (de)
French (fr)
Inventor
Abel-Ilah Zbat
Arnd Hofmann
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP12159564.9A priority Critical patent/EP2466991B1/en
Priority to EP09010482A priority patent/EP2285181A1/en
Publication of EP2285181A1 publication Critical patent/EP2285181A1/en
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to a wave choke system for a microwave oven according to claim 1. Further, the present invention relates to a microwave oven according to claim 13.
  • Microwave ovens generate electromagnetic fields in order to heat food stuff and beverages.
  • the strong electromagnetic fields generated by microwave ovens are a potential threat to the health of the operator, if said electromagnetic fields or parts of them leave the cavity.
  • the door of the microwave oven is a critical part. In particular, microwaves may leave the cavity through the gap between the door and the frame of the cavity.
  • the gap between the door and the cavity is sealed with respect to microwaves by integrating wave chokes into the door and/or the frame of the cavity.
  • Said wave chokes base on a ⁇ /4 transformation or an LC oscillator.
  • mechanical tolerances of the cavity frame and the frame of the oven door can evoke local areas of an increased leakage.
  • the channel comprises at least two recesses for a ⁇ /4 transformation and a step between said recesses, wherein preferably an edge of the step extends substantially or at least approximately parallel to the longitudinal axis of the channel.
  • the main idea of the present invention is the arrangement of the both recesses for the ⁇ /4 transformation within the channel and their formation by the step between them.
  • the step allows two successive recesses for the ⁇ /4 transformation.
  • the structure of the inventive wave choke system allows a low complexity.
  • the wave choke system according to the present invention may be realized by low costs.
  • the channel is an integrated part or an appendix of the door frame.
  • the assembly within or at the door frame can be realized by simple means.
  • the channel is an integrated part or an appendix of the cavity frame. Also this embodiment can be easily produced.
  • the channel has an L-shaped cross section.
  • Said L-shaped cross section minimizes the costs of materials.
  • the both legs of the L-shaped cross section form the recesses of the channel.
  • the gap may be arranged besides or within the interspace of the door frame and the cavity frame. This position of the gap allows an optimal choking of the microwaves.
  • the gap is covered by an element made of at least one non-conductive material.
  • said element is formed as an L-shaped profile section and covers the gap as well as a side wall beside.
  • the cover element may be arranged in front of the cavity frame. The cover element prevents the infiltration of undesirable particles into the channel.
  • At least one transparent element may be arranged on at least one outer side at the side wall of the channel.
  • the transparent element is made of at least one non-conductive material.
  • the transparent element is made of glass.
  • the transparent element is provided for allowing an insight into the cavity.
  • the present invention relates to a microwave oven comprising at least one wave choke system as described above.
  • FIG 1 illustrates a perspective view of a section of a wave choke system for microwave oven according to a first embodiment of the present invention.
  • the cross section of the illustrated section corresponds with the cross section of the whole wave choke system.
  • the wave choke system comprises an elongate channel 10 with an L-shaped cross section.
  • the channel 10 is arranged within a door frame of the microwave oven. It is provided, that the channel 10 encloses circumferentially the oven door completely or at least partially.
  • the channel 10 forms a part or an appendix of a door frame 34. In a closed state of the oven door the channel 10 extends along a cavity frame 36.
  • the channel 10 of the wave choke system comprises a first recess 12 and a second recess 14. Each of the recesses 12 and 14 is provided for a ⁇ /4 transformation.
  • the recesses 12 and 14 are separated by a step 16. The edge of said step 16 extends along the longitudinal axis of the channel 10.
  • the first recess 12 and the second recess 14 form the both legs of the L-shaped cross section of the channel 10.
  • the channel 10 includes two portions acting as ⁇ /4 wave traps.
  • the channel 10 includes an outer circumferential side wall 18, a first inner circumferential side wall 20, a second inner circumferential side wall 22, an outer side wall 24 and an inner side wall 26.
  • the side walls 18, 20, 22, 24 and 26 of the channel 10 are made of an electrically conductive material, in particular of metal.
  • the first inner circumferential side wall 20 corresponds with the first recess 12 and forms an inner circumferential side wall of the first recess 12.
  • the second inner circumferential side wall 22 corresponds with the second recess 14 and forms an inner circumferential side wall of the second recess 14.
  • the outer circumferential side wall 18 comprises a gap 28 besides the inner side wall 26. Except said gap 28, the channel 10 is completely enclosed by electrically conductive side walls 18, 20, 22, 24 and 26.
  • the wave choke system comprises a transparent element 30 and a cover element 32.
  • the transparent element 30 is arranged at the outer side of the outer circumferential side wall 18.
  • the transparent element 30 is made of a non-conductive and transparent material.
  • the transparent element 30 is made of glass.
  • the transparent element 30 allows an insight into the cavity.
  • the cover element 32 is formed as an L-shaped profile section and covers the gap 28 as well as the inner side wall 26.
  • the cover element 32 is made of a non-conductive material. Further, the cover element 32 is arranged in front of the cavity frame 36. The cover element 32 prevents the infiltration of undesirable particles into the channel 10.
  • FIG 2 illustrates a perspective view of a section of a wave choke system for microwave oven according to a second embodiment of the present invention. Identical, corresponding and similar elements of the wave choke system have the same reference numerals as in FIG 1 . The cross section of the illustrated section corresponds with the cross section of the whole wave choke system.
  • the wave choke system of the second embodiment comprises also the elongate channel 10 with the L-shaped cross section.
  • the channel 10 is arranged within the door frame of the microwave oven. It is provided, that the channel 10 completely or at least partially encloses circumferentially the oven door.
  • the channel 10 is a part or the appendix of the door frame 34. In a closed state of the oven door the channel 10 extends along the cavity frame 36.
  • the channel 10 of the wave choke system according to the second embodiment comprises also the first recess 12 and the second recess 14.
  • the recesses 12 and 14 are provided for ⁇ /4 transformations.
  • the recesses 12 and 14 are separated by the step 16.
  • the edge of said step 16 extends along the longitudinal axis of the channel 10.
  • the first recess 12 and the second recess 14 form the both legs of the L-shaped cross section of the channel 10.
  • the channel 10 of the second embodiment includes also two portions acting as ⁇ /4 wave traps.
  • the channel 10 includes the outer circumferential side wall 18, the first inner circumferential side wall 20, the second inner circumferential side wall 22 and the outer side wall 24.
  • the side walls 18, 20, 22 and 24 of the channel 10 are made of an electrically conductive material, in particular of metal.
  • the first inner circumferential side wall 20 corresponds with the first recess 12 and forms an inner circumferential side wall of the first recess 12.
  • the second inner circumferential side wall 22 corresponds with the second recess 14 and forms an inner circumferential side wall of the second recess 14.
  • the gap 28 is arranged between the outer circumferential side wall 18 and the first inner circumferential side wall 20. Except said gap 28, the channel 10 is completely enclosed by electrically conductive side walls 18, 20, 22 and 24.
  • the difference between the first embodiment in FIG 1 and the second embodiment in FIG 2 is the position of the gap 28.
  • the gap 28 is arranged at the outer circumferential side wall 18.
  • the gap 28 is provided instead of the inner side wall 26 in FIG 1 .
  • the inner side wall 26 is lacking in the second embodiment according to FIG 2 .
  • the wave choke system comprises the transparent element 30 and a cover element 32.
  • the transparent element 30 is arranged at the outer side of the outer circumferential side wall 18.
  • the transparent element 30 is made of a non-conductive and transparent material.
  • the transparent element 30 is made of glass.
  • the transparent element 30 allows an insight into the cavity.
  • the cover element 32 is formed as an L-shaped profile section and covers the gap 28 and an inner portion of the outer circumferential side wall 18.
  • the cover element 32 is made of a non-conductive material. Further, the cover element 32 is arranged in front of the cavity frame 36. The cover element 32 prevents the infiltration of undesirable particles into the channel 10.
  • wave choke system may be realized.
  • orientation of the channel 10 in relation to the oven door and the cavity frame can be varied.
  • the substantial features of the wave choke system according to the present invention are the both recesses 12 and 14 for the ⁇ /4 transformation and the step 16 between them.
  • the wave choke system according to the present invention with the both recesses 12 and 14 beside the step 16 allows an improved sealing of microwaves.
  • the leakage between the oven door and the cavity frame is reduced.
  • the inventive wave choke system has a higher bandwidth.
  • the functionality of the wave choke system according to the present invention is more robust against mechanical tolerances of the cavity walls and frame. At last, the inventive wave choke system can be produced in an easy way.

Landscapes

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

Abstract

The present invention relates to a wave choke system for a microwave oven. Said wave choke system comprises at least one elongate channel (10) bordered by side walls (18, 20, 22, 24, 26) made of conductive material and by at least one gap (28). The channel (10) is provided for extending at least partially along the door frame (34) and/or along the cavity frame (36). The channel (10) comprises at least two recesses (12, 14) for a λ/4 transformation and a step (16) between said recesses (12, 14), wherein an edge of the step (16) extends parallel to the longitudinal axis of the channel (10). Further, the present invention relates to a microwave oven with at least one above wave choke system.

Description

  • The present invention relates to a wave choke system for a microwave oven according to claim 1. Further, the present invention relates to a microwave oven according to claim 13.
  • Microwave ovens generate electromagnetic fields in order to heat food stuff and beverages. The strong electromagnetic fields generated by microwave ovens are a potential threat to the health of the operator, if said electromagnetic fields or parts of them leave the cavity. The door of the microwave oven is a critical part. In particular, microwaves may leave the cavity through the gap between the door and the frame of the cavity.
  • Typically, the gap between the door and the cavity is sealed with respect to microwaves by integrating wave chokes into the door and/or the frame of the cavity. Said wave chokes base on a λ/4 transformation or an LC oscillator. However, mechanical tolerances of the cavity frame and the frame of the oven door can evoke local areas of an increased leakage.
  • It is an object of the present invention to provide an improved wave choke system for a microwave oven.
  • This object is achieved by the wave choke system according to claim 1.
  • According to the present invention the channel comprises at least two recesses for a λ/4 transformation and a step between said recesses, wherein preferably an edge of the step extends substantially or at least approximately parallel to the longitudinal axis of the channel.
  • The main idea of the present invention is the arrangement of the both recesses for the λ/4 transformation within the channel and their formation by the step between them. The step allows two successive recesses for the λ/4 transformation. The structure of the inventive wave choke system allows a low complexity. Thus, the wave choke system according to the present invention may be realized by low costs.
  • According to a preferred embodiment of the present invention the channel is an integrated part or an appendix of the door frame. The assembly within or at the door frame can be realized by simple means.
  • Alternatively or additionally the channel is an integrated part or an appendix of the cavity frame. Also this embodiment can be easily produced.
  • Preferably, the channel has an L-shaped cross section. Said L-shaped cross section minimizes the costs of materials. For example, the both legs of the L-shaped cross section form the recesses of the channel.
  • Further, the gap may be arranged besides or within the interspace of the door frame and the cavity frame. This position of the gap allows an optimal choking of the microwaves.
  • According to a preferred embodiment of the present invention the gap is covered by an element made of at least one non-conductive material. For example, said element is formed as an L-shaped profile section and covers the gap as well as a side wall beside. The cover element may be arranged in front of the cavity frame. The cover element prevents the infiltration of undesirable particles into the channel.
  • Additionally, at least one transparent element may be arranged on at least one outer side at the side wall of the channel. In particular, the transparent element is made of at least one non-conductive material. For example, the transparent element is made of glass.
  • Preferably, the transparent element is provided for allowing an insight into the cavity.
  • At last, the present invention relates to a microwave oven comprising at least one wave choke system as described above.
  • The novel and inventive features believed to be the characteristic of the present invention are set forth in the appended claims.
  • The invention will be described in further detail with reference to the drawing, in which
    • FIG 1
    illustrates a perspective view of a section of a wave choke system for microwave oven according to a first em- bodiment of the present invention, and
    FIG 2
    illustrates a perspective view of a section of a wave choke system for microwave oven according to a second em- bodiment of the present invention.
  • FIG 1 illustrates a perspective view of a section of a wave choke system for microwave oven according to a first embodiment of the present invention. The cross section of the illustrated section corresponds with the cross section of the whole wave choke system.
  • The wave choke system comprises an elongate channel 10 with an L-shaped cross section. The channel 10 is arranged within a door frame of the microwave oven. It is provided, that the channel 10 encloses circumferentially the oven door completely or at least partially. The channel 10 forms a part or an appendix of a door frame 34. In a closed state of the oven door the channel 10 extends along a cavity frame 36.
  • The channel 10 of the wave choke system comprises a first recess 12 and a second recess 14. Each of the recesses 12 and 14 is provided for a λ/4 transformation. The recesses 12 and 14 are separated by a step 16. The edge of said step 16 extends along the longitudinal axis of the channel 10. The first recess 12 and the second recess 14 form the both legs of the L-shaped cross section of the channel 10. Thus, the channel 10 includes two portions acting as λ/4 wave traps.
  • The channel 10 includes an outer circumferential side wall 18, a first inner circumferential side wall 20, a second inner circumferential side wall 22, an outer side wall 24 and an inner side wall 26. The side walls 18, 20, 22, 24 and 26 of the channel 10 are made of an electrically conductive material, in particular of metal. The first inner circumferential side wall 20 corresponds with the first recess 12 and forms an inner circumferential side wall of the first recess 12. In a similar way, the second inner circumferential side wall 22 corresponds with the second recess 14 and forms an inner circumferential side wall of the second recess 14.
  • In this embodiment, the outer circumferential side wall 18 comprises a gap 28 besides the inner side wall 26. Except said gap 28, the channel 10 is completely enclosed by electrically conductive side walls 18, 20, 22, 24 and 26.
  • Further, the wave choke system comprises a transparent element 30 and a cover element 32. The transparent element 30 is arranged at the outer side of the outer circumferential side wall 18. The transparent element 30 is made of a non-conductive and transparent material. In this embodiment, the transparent element 30 is made of glass. The transparent element 30 allows an insight into the cavity. The cover element 32 is formed as an L-shaped profile section and covers the gap 28 as well as the inner side wall 26. The cover element 32 is made of a non-conductive material. Further, the cover element 32 is arranged in front of the cavity frame 36. The cover element 32 prevents the infiltration of undesirable particles into the channel 10.
  • FIG 2 illustrates a perspective view of a section of a wave choke system for microwave oven according to a second embodiment of the present invention. Identical, corresponding and similar elements of the wave choke system have the same reference numerals as in FIG 1. The cross section of the illustrated section corresponds with the cross section of the whole wave choke system.
  • The wave choke system of the second embodiment comprises also the elongate channel 10 with the L-shaped cross section. The channel 10 is arranged within the door frame of the microwave oven. It is provided, that the channel 10 completely or at least partially encloses circumferentially the oven door. The channel 10 is a part or the appendix of the door frame 34. In a closed state of the oven door the channel 10 extends along the cavity frame 36.
  • The channel 10 of the wave choke system according to the second embodiment comprises also the first recess 12 and the second recess 14. The recesses 12 and 14 are provided for λ/4 transformations. The recesses 12 and 14 are separated by the step 16. The edge of said step 16 extends along the longitudinal axis of the channel 10. The first recess 12 and the second recess 14 form the both legs of the L-shaped cross section of the channel 10. The channel 10 of the second embodiment includes also two portions acting as λ/4 wave traps.
  • The channel 10 includes the outer circumferential side wall 18, the first inner circumferential side wall 20, the second inner circumferential side wall 22 and the outer side wall 24. The side walls 18, 20, 22 and 24 of the channel 10 are made of an electrically conductive material, in particular of metal. The first inner circumferential side wall 20 corresponds with the first recess 12 and forms an inner circumferential side wall of the first recess 12. In the same way, the second inner circumferential side wall 22 corresponds with the second recess 14 and forms an inner circumferential side wall of the second recess 14.
  • In this embodiment, the gap 28 is arranged between the outer circumferential side wall 18 and the first inner circumferential side wall 20. Except said gap 28, the channel 10 is completely enclosed by electrically conductive side walls 18, 20, 22 and 24. Thus, the difference between the first embodiment in FIG 1 and the second embodiment in FIG 2 is the position of the gap 28. In the first embodiment the gap 28 is arranged at the outer circumferential side wall 18. In the second embodiment the gap 28 is provided instead of the inner side wall 26 in FIG 1. Thus, the inner side wall 26 is lacking in the second embodiment according to FIG 2.
  • Further, the wave choke system according to the second embodiment comprises the transparent element 30 and a cover element 32. The transparent element 30 is arranged at the outer side of the outer circumferential side wall 18. The transparent element 30 is made of a non-conductive and transparent material. Also in this embodiment, the transparent element 30 is made of glass. The transparent element 30 allows an insight into the cavity. The cover element 32 is formed as an L-shaped profile section and covers the gap 28 and an inner portion of the outer circumferential side wall 18. The cover element 32 is made of a non-conductive material. Further, the cover element 32 is arranged in front of the cavity frame 36. The cover element 32 prevents the infiltration of undesirable particles into the channel 10.
  • Further embodiments of the wave choke system according to the present invention may be realized. For example, the orientation of the channel 10 in relation to the oven door and the cavity frame can be varied. The substantial features of the wave choke system according to the present invention are the both recesses 12 and 14 for the λ/4 transformation and the step 16 between them.
  • The wave choke system according to the present invention with the both recesses 12 and 14 beside the step 16 allows an improved sealing of microwaves. The leakage between the oven door and the cavity frame is reduced. The inventive wave choke system has a higher bandwidth. The functionality of the wave choke system according to the present invention is more robust against mechanical tolerances of the cavity walls and frame. At last, the inventive wave choke system can be produced in an easy way.
  • Although illustrative embodiments of the present invention have been described herein with reference to the accompanying drawing, it is to be understood that the present invention is not limited to those precise embodiments and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims.
    • List of reference numerals
    • 10
    channel
    12
    first recess
    14
    second recess
    16
    step
    18
    outer circumferential side wall
    20
    first inner circumferential side wall
    22
    second inner circumferential side wall
    24
    outer side wall
    26
    inner side wall
    28
    gap
    30
    transparent element
    32
    cover element
    34
    door frame
    36
    cavity frame

Claims (13)

  1. A wave choke system for a microwave oven, wherein said wave choke system comprises at least one elongate channel (10) bordered by side walls (18, 20, 22, 24, 26) made of one or more conductive materials and by at least one gap (28), wherein the channel (10) is provided for extending at least partially along the door frame (34) and/or along the cavity frame (36),
    characterized in, that
    the channel (10) comprises at least two recesses (12, 14) for a λ/4 transformation and a step (16) between said recesses (12, 14).
  2. The wave choke system according to claim 1,
    characterized in, that
    the channel (10) is an integrated part or an appendix of the door frame (34).
  3. The wave choke system according to claim 1,
    characterized in, that
    the channel (10) is an integrated part or an appendix of the cavity frame (36).
  4. The wave choke system according to any one of the preceding claims,
    characterized in, that
    the channel (10) has an L-shaped cross section.
  5. The wave choke system according to claim 4,
    characterized in, that
    the both legs of the L-shaped cross section form the recesses (12, 14) of the channel.
  6. The wave choke system according to any one of the pre ceding claims,
    characterized in, that
    the gap (28) is arranged besides or within the interspace of the door frame (34) and the cavity frame (36).
  7. The wave choke system according to any one of the pre ceding claims,
    characterized in, that
    the gap (28) is covered by an element (26) made of at least one non-conductive material.
  8. The wave choke system according to any one of the pre ceding claims,
    characterized in, that
    at least one transparent element (30) is arranged on at least one outer side at the side wall (18) of the channel (10).
  9. The wave choke system according to claim 8,
    characterized in, that
    the transparent element (30) is made of at least one non-conductive material.
  10. The wave choke system according to claim 8 or 9,
    characterized in, that
    the transparent element (30) is made of glass.
  11. The wave choke system according to any one of the claims 8 to 10,
    characterized in, that
    the transparent element (30) is provided for allowing an insight into the cavity.
  12. The wave choke system according to any one of the pre ceding claims, characterized in that
    an edge of the step (16) extends at least approximately parallel to the longitudinal axis of the channel (10).
  13. A microwave oven,
    characterized in, that
    the microwave oven comprises at least one wave choke system according to any one of the claims 1 to 12.
EP09010482A 2009-08-14 2009-08-14 A wave choke system for a microwave oven Withdrawn EP2285181A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12159564.9A EP2466991B1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven
EP09010482A EP2285181A1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09010482A EP2285181A1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP12159564.9A Division EP2466991B1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven

Publications (1)

Publication Number Publication Date
EP2285181A1 true EP2285181A1 (en) 2011-02-16

Family

ID=41426315

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12159564.9A Not-in-force EP2466991B1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven
EP09010482A Withdrawn EP2285181A1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12159564.9A Not-in-force EP2466991B1 (en) 2009-08-14 2009-08-14 A wave choke system for a microwave oven

Country Status (1)

Country Link
EP (2) EP2466991B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678238A (en) 1970-04-23 1972-07-18 Sanyo Electric Co High frequency heating apparatus
GB2058529A (en) * 1979-09-11 1981-04-08 Bosch Siemens Hausgeraete Microwave heating apparatus
GB2106360A (en) * 1981-09-25 1983-04-07 Hitachi Heating Appl Microwave heating apparatus
EP0116648A1 (en) * 1982-08-25 1984-08-29 Matsushita Electric Industrial Co., Ltd. Radio-wave sealing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678238A (en) 1970-04-23 1972-07-18 Sanyo Electric Co High frequency heating apparatus
GB2058529A (en) * 1979-09-11 1981-04-08 Bosch Siemens Hausgeraete Microwave heating apparatus
GB2106360A (en) * 1981-09-25 1983-04-07 Hitachi Heating Appl Microwave heating apparatus
EP0116648A1 (en) * 1982-08-25 1984-08-29 Matsushita Electric Industrial Co., Ltd. Radio-wave sealing device

Also Published As

Publication number Publication date
EP2466991A1 (en) 2012-06-20
EP2466991B1 (en) 2014-08-06

Similar Documents

Publication Publication Date Title
EP2237643A1 (en) A wave choke system for a door of a microwave oven
EP2813131B1 (en) A gasket adapted for a microwave oven or a cooking oven with microwave heating function and a microwave oven or a cooking oven with microwave heating function comprising the same
EP2031939B1 (en) A wave choke device for a microwave oven door
EP2031938B1 (en) A wave choke system for a microwave oven door
EP3490341B1 (en) A door for a microwave appliance
KR102001300B1 (en) Structure for shielding electromagnetic waves and door and cooking appliance therewith
US9549438B2 (en) Microwave oven with at least one wave choke system
EP2466991B1 (en) A wave choke system for a microwave oven
EP2271177B1 (en) A wave choke system for an oven door of a microwave oven
EP2271176B1 (en) A wave choke system for an oven door of a microwave oven
HK1145926A (en) A wave choke system for a microwave oven door
HK1164620A (en) A wave choke system for a door of a microwave oven

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100208

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ELECTROLUX HOME PRODUCTS CORPORATION N.V.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ELECTROLUX HOME PRODUCTS CORPORATION N.V.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150303