• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    GASKET ADAPTED TO A MICROWAVE OVEN AND MICROWAVE OVEN. A gasket (20) adapted for a microwave oven or a cooking oven with the microwave heating function, which comprises at least one elastic material and includes a front portion (30) and a rear portion ( 32), where the front portion (30) of the gasket (20) consists essentially of an electrically non-conductive material, while the rear portion (32) of the gasket (20) consists essentially of an electrically conductive material.
    公开号:BR112015012388B1
    申请号:R112015012388-0
    申请日:2014-01-27
    公开日:2021-02-02
    发明作者:Trevor Specht；Klaus Wälzlein；Tobias Schütz
    申请人:Electrolux Home Products Corporation N.V；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to a gasket adapted for a microwave oven or for a cooking oven with the function of heating by microwave. In addition, the present invention relates to a microwave oven or a cooking oven with the microwave heating function that comprises it. BACKGROUND OF THE INVENTION
    [002] A microwave oven creates electromagnetic fields in order to heat food and drinks in the oven cavity. However, the strong electromagnetic fields generated by the microwave oven are a potential threat to the health of the operator, if the said electromagnetic fields or parts of them leave the oven cavity. The oven door of the microwave oven is a critical piece. In particular, microwaves can leave the oven cavity through a gap between the oven door and the front frame that surrounds the front opening of the oven cavity. Even low field amplitudes remaining inside the compartment can cause problems with any electronic component of the microwave oven.
    [003] An additional aspect is the energy consumption of the microwave oven. Rising energy costs require microwave ovens with low energy consumption. In particular, cooking ovens with a microwave heating function and additional conventional heating functions must have minimal thermal losses. DESCRIPTION OF THE INVENTION
    [004] It is an object of the present invention to provide a better sealing and thermal insulation with a low complexity for a microwave oven and / or a cooking oven with the microwave heating function.
    [005] The purpose of the present invention is achieved by the gasket for a microwave oven or for an oven according to claim 1.
    [006] The present invention relates to a gasket that is adapted for a microwave oven or for a cooking oven with the microwave heating function, which comprises at least one elastic material and includes a portion front and rear portion, where the front portion of the gasket consists essentially of an electrically non-conductive material, while the rear portion of the gasket consists essentially of an electrically conductive material.
    [007] According to the present invention, the gasket, which includes two components, that is, the front portion and the rear portion, in which the front portion is made of an electrically non-conductive material, and the rear portion is made of conductive material. It has been found that the front portion does not require an electrically conductive component, if the wave blocker of a microwave oven or cooking oven with microwave heating function is arranged inside the oven door. The wave blocker is already sufficient to stop leakage through the oven door. In addition, the electrically non-conductive material is more resistant to mechanical and thermal stresses and chemical attacks.
    [008] In particular, the front portion and the rear portion of the gasket extend parallel to each other and along the longitudinal axis of said gasket.
    [009] Preferably, the gasket comprises at least one silicone material.
    [010] For example, the back portion of the gasket comprises at least one silicone material containing small metallic particles mixed with said silicone material.
    [011] In particular, the gasket is formed as a single piece.
    [012] In addition, the wave blocker may comprise a G-shaped cross section.
    [013] In this case, the gasket may extend in parallel to a groove in the G-shaped wave blocker, in the closed state of the oven door.
    [014] In addition, the door frame of a microwave oven or cooking oven with the microwave heating function may comprise a front door frame and a rear door frame, in which the wave blocker is arranged between the front door frame and the rear door frame.
    [015] In addition, the rear door frame of a microwave oven or cooking oven with the microwave heating function may comprise an L-shaped cross section, with an outer flap surrounding the oven door and an inner flap rests against the gasket in the closed state of the oven door.
    [016] For example, the front portion of the gasket according to the invention comprises a triangular cross section. In contrast, the back portion of the gasket may have an L-shaped cross section.
    [017] In addition, the oven door of a microwave oven or a cooking oven with the microwave heating function may comprise a door grill surrounded by the wave blocker and the door frame.
    [018] In addition, a first space can be formed between the front frame and the door frame of a microwave oven or a cooking oven with the microwave heating function, in the closed state of the oven door. oven, in which said space extends parallel to the plane of the oven door.
    [019] In particular, the first space comprises the gasket of the present invention in the closed state of the oven door.
    [020] The first space can have any suitable width that substantially allows to achieve the aforementioned objectives of the invention. For example, the space may have a width in the range of about 0.1 mm to about 10 mm, in particular in a range of about 1 mm to about 5 mm, preferably a width of between 2 mm and 3 mm. mm, for example, a width of 2.5 mm.
    [021] In addition, a second space can be formed between the front frame and a front opening of the oven cavity. The second space can include, at least partially, a front opening of the oven cavity and the front frame can, in turn, include the space. The front frame can be thermally insulated from the inside of the oven for the second interval, in order to avoid energy losses by conducting heat from the oven cavity to the front frame.
    [022] The second space can have any suitable width that substantially avoids the conduction of heat from the oven cavity to the front frame. For example, the space may have a width in the range of about 0.1 mm to about 10 mm, in particular in a range of about 1 mm to about 5 mm, preferably a width of between 2 mm and 3 mm. mm, for example, a width of 2.5 mm.
    [023] In addition, the present invention relates to a microwave oven or a cooking oven with the microwave heating function comprising the aforementioned gasket. BRIEF DESCRIPTION OF THE DRAWINGS
    [024] The invention will be explained in more detail below by means of exemplary modalities. Reference is thus made to the drawings, in which:
    [025] FIG. 1 illustrates a partial schematic top cross-sectional view of an oven door and a microwave oven chassis with a gasket in accordance with a preferred embodiment of the present invention, and
    [026] FIG. 2 illustrates a schematic cross-sectional view of the gasket of the invention, which is adapted to be arranged in a first space between a front frame and a rear door frame of the microwave oven. DESCRIPTION OF ACCOMPLISHMENTS OF THE INVENTION
    [027] FIG. 1 illustrates a schematic partial cross-sectional top view of an oven door 10 and a frame 12 of a microwave oven with a gasket according to a preferred embodiment of the present invention.
    [028] The microwave oven chassis 12 comprises an oven cavity 14, a front frame 16 and a side wall 18. The front frame 16 involves a front opening of the oven cavity 14. The oven door 10 of the oven The microwave oven comprises a front door frame 22, a rear door frame 24, a wave blocker 26 and a door grille 28. The front door frame 22 has a U-shaped profile. The rear door frame 24 has an L-shaped profile.
    [029] The wave block 26 is arranged between the front door frame 22 and the rear door frame 24. The front door frame 22, the rear door frame 24 and the wave block 26 form a door frame of the oven door 10. The door frame surrounds the door grid 28 of the oven door 10.
    [030] The wave block 26 has a G-shaped cross section. A groove in said G-shaped cross section is arranged on the rear outer side of the block 26. Said groove includes the oven door 10. The wave 26 comprises a plurality of lamellae. The groove in the G-shaped cross section is covered by the rear door frame 24.
    [031] A first opening (34) between the front frame 16 of the chassis 12 and the rear door frame 24 of the oven door 10 extends parallel to the plane of the oven door 10. In this example, the first opening (34 ) has a thickness of about 2.5 mm.
    [032] A gasket 20 is arranged in a second opening (36) between the oven cavity 14 and the front frame 16. In a closed state of the oven door 10, the gasket 20 partially covers the groove in the G-shaped cross section of the wave blocker 26. The gasket 20 closes the first opening (34) between the front frame 16 of the chassis 12 and the frame of the rear door 24 of the oven door 10.
    [033] The gasket 20 consists essentially of two components, that is, a front portion 30 and a rear portion 32. The front portion 30 of the gasket 20 is made essentially of an electrically non-conductive material. In contrast, the rear portion 32 of the gasket 20 is made essentially of a conductive material. The gasket 20 is provided to seal the first gap 34 between the oven door 10 and the front opening of the oven cavity 14 against the microwave, on the one hand, and against water vapor, fat, hot air and humid air , on the other hand.
    [034] FIG. 2 illustrates a schematic cross-sectional view of the gasket 20 provided for the first gap 34 between the front frame 16 and the rear door frame 24 of the microwave oven according to the preferred embodiment of the present invention. The gasket 20 comprises one or more elastic materials.
    [035] The gasket 20 includes the front portion 30 and the rear portion 32. The front portion 30 has a substantially triangular cross section. The rear portion 32 has an L-shaped cross section. A cross section hook of the L-shaped rear portion 32 is engaged with an edge of the oven cavity 14, as shown in FIG 1. The front portion 30 is made essentially of the electrically non-conductive material, while the rear portion 32 is made essentially of the conductive material.
    [036] It has been found that the front portion 30 does not require an electrically conductive component, if the wave blocker 26 is inside the oven door 10. The wave blocker 26 is already sufficient to stop leakage through the oven door 10 The electrically non-conductive material allows greater resistance against mechanical and thermal stresses and chemical attacks. In addition, it has been found that the back portion 32 of the gasket, which is essentially made up of an electrically conductive material, can effectively prevent any microwave leakage into the microwave oven compartment if it is placed inside a second space (36) which is formed between the oven cavity 14 and the front frame 16 that circumferentially surrounds at least a part of the front opening of the oven cavity 14.
    [037] For example, gasket 20 is made of different silicone materials. The front portion 30 of the gasket 20 can be made of a silicone material containing small metallic particles mixed with said silicone material. Two different silicone materials are available under the trade names "THERMIC-50-HT / T / FG" and "DUCOSIL-68 / T", one of which includes the small metal particles mixed in the silicone material. Electrically non-conductive material is more resistant to mechanical and thermal stress and chemical attacks.
    [038] The gasket 20 provides tightness in relation to the microwaves for the interior of the oven and for the door of the oven 10. The front portion 30 of the gasket 20 provides tightness in relation to the steam and other substances that occur in an oven. In addition, the front part 30 of the gasket 20 allows compensation of the tolerances of the first gap 34 between the oven door 10 and the front frame 16. A special wave blocking system in the first gap 34 is not necessary. An additional steam gasket for the first interval 34 is not required. The rear portion 32 of the gasket 20 provides tightness with respect to steam and other substances occurring in an oven towards the oven compartment, which comprises the electrical components of the oven. In addition, the rear portion 32 of the gasket 20 allows compensation of the tolerances of the second gap 34 between the oven cavity 14 and the front frame 16. A special wave blocking system in the second gap 36 is not necessary, because the rear 32 of the gasket 20 consists essentially of electrically conductive material. An additional steam gasket for the second interval 36 is not required. Thus, the gasket 20 minimizes microwave leakage both through the first gap 30 and the second gap 32 due to low complexity.
    [039] Although an illustrative embodiment of the present invention has been described herein with reference to the accompanying drawings, it should be understood that the present invention is not limited to that precise embodiment, and that several other changes and modifications can be made to it by an expert 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 NUMBERS 10 oven door 12 chassis 14-oven cavity 16-front frame 18-side wall 20-gasket 22 front door frame 24 rear door frame 26 wave blocker 28 door grid 30 front portion of the gasket 32 rear portion of the gasket 34 first interval 36 second interval
    权利要求:
    Claims (13)
    [0001]
    1. GASKET (20) ADAPTED TO A MICROWAVE OVEN or to a cooking oven with the function of microwave heating, comprising at least one elastic material and including a front portion (30) and a rear portion (32), wherein the rear portion (32) of the gasket (20) consists of an electrically conductive material, characterized in that the front portion (30) of the gasket (20) is constituted by an electrically non-conductive material.
    [0002]
    GASKET (20) according to claim 1, characterized in that the front portion (30) and the rear portion (32) of the gasket (20) extend parallel to each other and along a longitudinal axis of the gasket ( 20).
    [0003]
    A GASKET according to any one of claims 1 to 2, characterized in that the gasket (20) comprises at least one silicone material.
    [0004]
    GASKET (20) according to any one of claims 1 to 3, characterized in that the rear portion (32) of the gasket (20) comprises at least one silicone material containing metallic particles mixed with the silicone material.
    [0005]
    GASKET (20) according to any one of claims 1 to 4, characterized in that the gasket (20) is formed as a single piece.
    [0006]
    GASKET (20) according to any one of claims 1 to 5, characterized in that the gasket (20) is adapted for a microwave oven or a cooking oven with the microwave heating function comprising a front frame (16 ) which circumferentially surrounds at least part of a front opening of an oven cavity (14), an oven door (10) which is provided to cover the front opening of the oven cavity (14) and at least partially the front frame (16), where the gasket (20) is an elongated gasket (20) which is connected between the front frame (16), and the oven door (10) in a closed state rests against the front portion (30) of the gasket (20).
    [0007]
    A GASKET according to claim 6, characterized by the oven door (10) comprising a door frame (22, 24) which surrounds the oven door (10) and a wave blocker (26) which is arranged inside the door frame (22, 24) and surrounds the oven door (10).
    [0008]
    GASKET (20) according to any one of claims 1 to 7, characterized in that the front portion (30) of the gasket (20) comprises a triangular cross section.
    [0009]
    GASKET (20) according to any one of claims 6 to 8, characterized in that a first gap (34) is formed between the front frame (16) and the door frame (22, 24) in the closed state of the oven door (10), in which the first gap (34) extends parallel to the plane of the oven door (10), and in which the first gap (34) involves the front portion (30) of the gasket (20), in the state closed of the oven door (10).
    [0010]
    GASKET (20) according to any one of claims 1 to 9, characterized in that the gasket (20) is adapted for a microwave oven or a cooking oven with the microwave heating function comprising a front frame (16) circumferentially surrounding at least part of a front opening of an oven cavity (14), where the gasket (20) is an elongated gasket (20), and the rear portion (32) of the gasket (30) is fixable between the oven cavity (14) and the front frame (16).
    [0011]
    A GASKET (20) according to claim 10, characterized in that a second gap (36) is formed between the oven cavity (14) and the front frame (16) that circumferentially surrounds at least a part of the front opening of a oven cavity (14), in which the rear portion (32) of the gasket (20) is adapted to fit inside the second opening (36).
    [0012]
    GASKET (20) according to any one of claims 1 to 11, characterized in that the rear portion (32) of the gasket (20) comprises an L-shaped cross section.
    [0013]
    13. MICROWAVE OVEN or a cooking oven with microwave heating function characterized by comprising a gasket (20), as defined in any one of claims 1 to 12.
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    法律状态:
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-12-08| B09A| Decision: intention to grant|
    2021-02-02| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/01/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP13152702.0|2013-01-25|
    EP13152704|2013-01-25|
    EP13152702|2013-01-25|
    EP13152704.6|2013-01-25|
    EPPCT/EP2013/072149|2013-10-23|
    PCT/EP2013/072149|WO2014114371A1|2013-01-25|2013-10-23|A microwave oven or a multifunctional oven with microwave heating function|
    PCT/EP2014/051487|WO2014114783A1|2013-01-25|2014-01-27|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|
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