WO2016127655A1 - 微波炉门体及其门框、微波炉 - Google Patents

微波炉门体及其门框、微波炉 Download PDF

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Publication number
WO2016127655A1
WO2016127655A1 PCT/CN2015/091112 CN2015091112W WO2016127655A1 WO 2016127655 A1 WO2016127655 A1 WO 2016127655A1 CN 2015091112 W CN2015091112 W CN 2015091112W WO 2016127655 A1 WO2016127655 A1 WO 2016127655A1
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WO
WIPO (PCT)
Prior art keywords
door frame
microwave oven
door
frame body
wall surface
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.)
Ceased
Application number
PCT/CN2015/091112
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English (en)
French (fr)
Inventor
王轩
唐相伟
彭定元
陈茂顺
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.)
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Kitchen Appliances Manufacturing Co Ltd filed Critical Midea Group Co Ltd
Publication of WO2016127655A1 publication Critical patent/WO2016127655A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/02—Stoves or ranges heated by electric energy using microwaves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the present invention relates to the field of kitchen appliances, and more particularly to a door frame for a door of a microwave oven, a door body of the microwave oven including the door frame, and a microwave oven including the door body.
  • the prior art microwave oven door body 1 is composed of a door frame 10 ⁇ , a choke valve 11 ⁇ mounted on the door frame 10 ⁇ , and a door glass 12 ⁇ , and a plurality of outer peripheral portions of the door frame 10 ⁇ are formed to be turbulent.
  • the cavity acts as a groove 100 ⁇ .
  • the groove 100 is a frame with a turbulent cavity which is formed by bending the outer periphery of the door frame 10 ⁇ inwardly and bent, and the choke valve 11 is pressed against the groove 100 ⁇ .
  • the existing door frame 10 is a rectangular door frame, the shape of the groove 100 ⁇ is not easily maintained at the corner of the door frame 10, and the gap between the door frame 10 ⁇ and the front plate of the microwave oven is excessively large, and the microwave is diffracted, resulting in a microwave leakage phenomenon; Secondly, the rectangular door frame is not conducive to the uniform distribution of the microwave field in the cavity; again, the side door or the pull-down door of the rectangular door frame takes up space, the effective space utilization rate is not high, and it is not convenient to clean.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • an object of the first aspect of the present invention is to provide a door frame for a door of a microwave oven.
  • the shape of the groove is not easily maintained stable, and microwave leakage is likely to occur, and The problem of uneven distribution of the microwave field in the cavity.
  • an embodiment of the present invention provides a door frame for a door of a microwave oven, comprising: a door frame body having a circular or elliptical shape, and an upper end of the side wall of the door frame body is bent outward Forming a rim; and a plurality of L-shaped hem, the vertical edge of the hem and the outer edge of the rim Connected, the lateral side faces the side wall of the door frame body, and the folded edge, the surrounding edge and the side wall of the door frame body form a groove.
  • the door frame body has a circular or elliptical shape, so that a plurality of flanges on the circumference of the door frame body are also distributed around the circumference of the circle or the ellipse, and a plurality of flanges and rims are provided.
  • the outer wall surface of the side wall of the door frame body forms a plurality of grooves and is also distributed around the circumference of the circle or the ellipse, so that the turbulent cavity formed by the plurality of grooves is circular or elliptical, which is different from the prior art.
  • the circular or elliptical door frame body Compared with the square door frame, the circular or elliptical door frame body has a smooth transition everywhere, and there is no corner, so that the structure of the groove is easy to maintain, and the gap between the door frame and the front plate of the microwave oven can be well maintained to prevent the gap from passing. Large microwaves are diffracted, which leads to microwave leakage.
  • the circular or elliptical door frame body makes the door of the microwave oven as a whole circular or elliptical, which improves the uneven distribution of electromagnetic fields. The problem and increased usage of the heating chamber space.
  • the door frame of the door of the microwave oven provided by the above embodiment of the present invention further has the following additional technical features:
  • a height difference between a lower wall surface of the bottom wall of the door frame body and an upper wall surface of the surrounding edge is 20 mm to 30 mm; and/or an outer wall surface of the side wall of the door frame body
  • the distance between the lower end and the outer wall surface of the vertical side of the flange is 11 mm to 25 mm; and/or between the lower wall surface of the bottom wall of the door frame body and the lower end surface of the lateral side of the flange
  • the height difference is 2.5 mm to 3 mm; and/or the distance between the lower end of the outer wall surface of the side wall of the door frame body and the inner end surface of the lateral side of the flange is 2.5 mm to 3 mm.
  • the height of the vertical side of the hem is 7mm-17mm; and/or the thickness of the hem is 8mm-14mm; and/or the distance between adjacent edges It is 3mm-13mm.
  • the plurality of flanges are evenly disposed along the circumferential direction of the door frame body.
  • connection between the side wall of the door frame body and the surrounding edge is chamfered; and/or the connection between the lateral side of the folded edge and the vertical side is chamfered.
  • the center of the door frame body is provided with a convex groove that protrudes upward or downward.
  • the height of the convex groove is 5 mm to 10 mm.
  • the door frame body is provided with a vent hole.
  • the embodiment of the second aspect of the present invention provides a door of a microwave oven, comprising: a door frame of the door body of the microwave oven according to any of the above embodiments; an annular choke valve mounted on the door frame, and the choke cover a groove on the door frame; and a panel, the panel being mounted on the door frame.
  • the choke is a plastic piece
  • the door frame is a metal piece
  • the panel is a glass panel
  • An embodiment of the third aspect of the present invention provides a microwave oven comprising the microwave oven door body of any of the above embodiments.
  • FIG. 1 is a schematic structural view of a door of a microwave oven according to the related art
  • FIG. 2 is a schematic structural view of a door frame of the door of the microwave oven of FIG. 1;
  • FIG. 3 is a perspective structural view of a door frame of a door of a microwave oven according to an embodiment of the invention.
  • Figure 4 is a front view of the structure of Figure 3;
  • Figure 5 is a cross-sectional view showing the structure taken along line A-A of Figure 4.
  • Figure 6 is an enlarged schematic view showing the structure of the portion B of Figure 5;
  • FIG. 7 is a schematic perspective structural view of a door frame of a door of a microwave oven according to another embodiment of the present invention.
  • some embodiments of the present invention provide a door frame 1 for a door of a microwave oven, comprising: a door frame body 10 and a plurality of flanges 11 having an L-shaped cross section.
  • the door frame body 10 is circular or elliptical, and the upper end of the side wall 100 of the door frame body 10 is bent outward to form a rim 101;
  • each of the flanges 11 is connected to the outer edge of the side edge 101, the lateral side faces the side wall 100 of the door frame body 10, and each of the folded edge 11 and the surrounding edge 101 is
  • the side wall 100 of the door frame body 10 constitutes a groove 12, and the plurality of the folded edges 11 are uniformly disposed along the circumferential direction of the door frame body 10.
  • the door frame body has a circular or elliptical shape, so that a plurality of flanges on the circumference of the door frame body are also distributed around the circumference of the circle or the ellipse, and a plurality of flanges and rims are provided.
  • the outer wall surface of the side wall of the door frame body forms a plurality of grooves and is also distributed around the circumference of the circle or the ellipse, so that the turbulent cavity formed by the plurality of grooves is circular or elliptical, which is different from the prior art.
  • the circular or elliptical door frame body Compared with the square door frame, the circular or elliptical door frame body has a smooth transition everywhere, and there is no corner, so that the structure of the groove is easy to maintain, and the gap between the door frame and the front plate of the microwave oven can be well maintained to prevent the gap from passing. Large microwaves are diffracted, which leads to microwave leakage.
  • the circular or elliptical door frame body makes the door of the microwave oven as a whole circular or elliptical, which improves the uneven distribution of electromagnetic fields. The problem and increased usage of the heating chamber space.
  • the door frame body 10 is circular, and the height difference a between the lower wall surface of the bottom wall of the door frame body 10 and the upper wall surface of the surrounding edge 101 is 20 mm - 30 mm;
  • the distance b between the lower end of the outer wall surface of the side wall 100 of the door frame body 10 and the outer wall surface of the vertical side of the flange 11 is 11 mm - 25 mm;
  • the height difference c between the lower wall surface of the bottom wall of the door frame body 10 and the lower end surface of the lateral side 111 of the flange 11 is 2.5 mm - 3 mm;
  • the distance d between the lower end of the outer wall surface of the side wall 100 of the door frame body 10 and the inner end surface of the lateral side 111 of the flange 11 is 2.5 mm to 3 mm.
  • the flow chamber has better anti-microwave leakage effect
  • c determines the thickness of the door seal, generally considered to be minimized, such as within 2.5 ⁇ 3.0mm
  • the thickness X of the flange 11 is 8mm-14mm;
  • the distance Y between the adjacent flanges 11 is 3mm-13mm;
  • the height Z of the vertical side 110 of the flange 11 is 7 mm to 17 mm.
  • X, Y and Z jointly determine the size of the inductor resistance.
  • a chamfer 130 is provided at a joint between the side wall 100 of the door frame body 10 and the surrounding edge 101 .
  • a chamfer 131 is provided at the junction of the lateral side 111 and the vertical side 110 of the folded edge 11.
  • the radii of the chamfers 130 and 131 are within the minimum allowable range of die stamping.
  • the center of the door frame body 10 is provided with a convex groove 103 protruding upward or downward.
  • the height of the convex groove 103 is 5 mm to 10 mm.
  • the microwave field is improved in the cavity by providing a circular or elliptical convex groove (which can be formed by stamping) protruding in the center of the circular or elliptical door frame body and protruding at a height of 5 mm to 10 mm. Distribution in the body.
  • a circular or elliptical convex groove which can be formed by stamping
  • the height of the convex groove is not limited to the above-mentioned 5 mm to 10 mm, and can be set according to actual needs.
  • the center of the door frame body 10 is provided with an upwardly convex convex groove 103 . That is, the door frame 1 is designed as a cavity.
  • the door frame body 10 is provided with a vent hole 102.
  • vent holes By providing a plurality of vent holes in the door frame body, it is advantageous to discharge steam in the heating chamber of the microwave oven to the outside through the vent holes.
  • An embodiment of the second aspect of the present invention provides a microwave oven door body (not shown) including: an annular choke (not shown), a panel (not shown), and any of the above
  • the door frame 1 of the door of the microwave oven according to the embodiment has all the beneficial effects of the door frame described in any of the above embodiments, and details are not described herein again.
  • the choke valve is mounted on the door frame 1, and the choke valve covers the groove 12 on the door frame 1;
  • the panel is mounted on the door frame 1.
  • the door frame provided by the embodiment of the present invention is circular or elliptical, and therefore, the shape of the choke and the panel needs to be adapted to the shape of the door frame.
  • the choke valve is a plastic piece
  • the door frame 1 is a metal piece
  • the panel is a glass panel.
  • the materials of the choke, the door frame and the panel are not limited to the above, and can be set according to actual needs.
  • An embodiment of the third aspect of the present invention provides a microwave oven (not shown) comprising the microwave oven door body of any of the above embodiments.
  • the door frame of the door body of the microwave oven provided by the embodiment of the present invention has a round or elliptical shape, so that there is no corner on the door frame body, which is favorable for the structure of the groove to be stable, thereby making the door frame and the door frame
  • the gap between the front plates of the microwave oven is kept stable, and the microwave caused by the excessive gap is prevented from being diffracted, thereby causing the microwave leakage phenomenon to occur; at the same time, the circular or elliptical door frame body effectively improves the problem of uneven distribution of the electromagnetic field, and improves the problem.
  • the usage rate of the heating chamber space is a round or elliptical shape, so that there is no corner on the door frame body, which is favorable for the structure of the groove to be stable, thereby making the door frame and the door frame
  • the gap between the front plates of the microwave oven is kept stable, and the microwave caused by the excessive gap is prevented from being diffracted, thereby causing the microwave leakage phenomenon to occur; at the same time, the circular or
  • connection means two or more; the terms “installation”, “connection” and the like should be understood broadly.
  • connection may be a fixed connection or may be Disassemble the connections, or connect them integrally; they can be connected directly or indirectly via an intermediate medium.
  • connection may be a fixed connection or may be Disassemble the connections, or connect them integrally; they can be connected directly or indirectly via an intermediate medium.
  • the description of the terms “one embodiment”, “some embodiments”, “specific embodiments” and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example.
  • the schematic representation of the above terms does not necessarily refer to the same embodiment or example.
  • the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

一种微波炉门体（1'）及其门框（1）、微波炉。该微波炉门体的门框（1）包括：门框本体（10）和多个呈L形的折边（11），门框本体（10）呈圆形或椭圆形，且门框本体（10）的侧壁（100）的上端向外弯折形成围边（101）；折边（11）的竖边（110）与围边（101）的外边缘相连，横边（111）朝向门框本体（10）的侧壁（100），且折边（11）、围边（101）与门框本体（10）的侧壁（100）的外壁面构成沟槽（12）。

Description

微波炉门体及其门框、微波炉 技术领域
本发明涉及厨房电器领域，更具体而言，涉及一种微波炉门体的门框、包括该门框的微波炉门体和包括门体的微波炉。
背景技术
如图1和图2所示，现有技术的微波炉门体1ˊ由门框10ˊ、安装在门框10ˊ上的阻气门11ˊ和门玻璃12ˊ等组成，门框10ˊ的外周边形成的多个起到扼流腔作用的沟槽100ˊ。沟槽100ˊ为门框10ˊ的外周边向内侧折回弯曲形成的带有一个扼流腔的框，阻气门11ˊ压在沟槽100ˊ上。
由于现有的门框10ˊ为长方形门框，在门框10ˊ拐角处，沟槽100ˊ的形状不易保持稳定，容易造成门框10ˊ与微波炉前板之间的缝隙过大，微波发生衍射，导致出现微波泄露现象；其次，长方形门框不利于微波场在腔体内的均匀分布；再次，长方形门框的侧开门或下拉门比较占空间，有效空间使用率不高，且不便于清洁。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。
为此，本发明第一个方面的目的在于，提供一种微波炉门体的门框，通过将门框设置呈圆形或椭圆形，改善了沟槽的形状不易保持稳定，容易出现微波泄露现象，以及微波场在腔体内的分布不匀的问题。
本发明第二个方面的目的在于，提供一种包括上述门框的微波炉门体。
本发明第三个方面的目的在于，提供一种包括上述门体的微波炉。
为实现上述目的，本发明的实施例提供了一种微波炉门体的门框，包括：门框本体，所述门框本体呈圆形或椭圆形，且所述门框本体的侧壁的上端向外弯折形成围边；和多个呈L形的折边，所述折边的竖边与所述围边的外边缘 相连，横边朝向所述门框本体的侧壁，且所述折边、所述围边与所述门框本体的侧壁构成沟槽。
本发明的上述实施例中，门框本体呈圆形或椭圆形，这样与门框本体的围边上的多个折边也围绕圆形或椭圆形的周向分布，由多个折边、围边、门框本体的侧壁的外壁面构成多个沟槽也围绕圆形或椭圆形的周向分布，使得由多个沟槽构成的扼流腔呈圆形或椭圆形，与现有技术中的方形的门框相比，圆形或椭圆形的门框本体各处均圆滑过渡，不存在拐角，使得沟槽的结构易保持稳定，可良好地保持门框与微波炉前板之间的缝隙，防止缝隙过大造成的微波发生衍射，进而导致微波泄露现象发生；同时与方形的门框相比，圆形或椭圆形的门框本体使得微波炉门体整体也呈圆形或椭圆形，有效改善了电磁场分布不均的问题，且提高了加热腔空间的使用率。
另外，本发明上述实施例提供的微波炉门体的门框还具有如下附加技术特征：
根据本发明的一个实施例，所述门框本体的底壁的下壁面与所述围边的上壁面之间的高度差为20mm-30mm；和/或，所述门框本体的侧壁的外壁面的下端与所述折边的竖边的外壁面之间的距离为11mm-25mm；和/或，所述门框本体的底壁的下壁面与所述折边的横边的下端面之间的高度差为2.5mm-3mm；和/或，所述门框本体的侧壁的外壁面的下端与所述折边的横边的内端面之间的距离为2.5mm-3mm。
根据本发明的一个实施例，所述折边的竖边的高度为7mm-17mm；和/或，所述折边的厚度为8mm-14mm；和/或，相邻所述折边间的距离为3mm-13mm。
根据本发明的一个实施例，多个所述折边沿所述门框本体的周向均匀设置。
根据本发明的一个实施例，所述门框本体的侧壁与所述围边的连接处设有倒角；和/或，所述折边的横边与竖边的连接处设有倒角。
根据本发明的一个实施例，所述门框本体的中心设有向上或向下凸出的凸槽。
根据本发明的一个实施例，所述凸槽的高度为5mm-10mm。
根据本发明的一个实施例，所述门框本体上设有排气孔。
本发明第二方面的实施例提供了一种微波炉门体，包括：上述任一实施例所述的微波炉门体的门框；环形的阻气门，安装在所述门框上，且所述阻气门覆盖所述门框上的沟槽；和面板，所述面板安装在所述门框上。
根据本发明的一个实施例，所述阻气门为塑料件，所述门框为金属件，所述面板为玻璃面板。
本发明第三方面的实施例提供了一种微波炉，包括上述任一实施例所述的微波炉门体。
本发明的附加方面和优点将在下面的描述部分中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据相关技术所述的微波炉门体的结构示意图；
图2是图1中微波炉门体的门框的结构示意图；
图3是根据本发明一个实施例所述的微波炉门体的门框的立体结构示意图；
图4是图3的主视结构示意图；
图5是图4的A-A向剖视结构示意图；
图6是图5的B部结构放大示意图；
图7是根据本发明另一个实施例所述的微波炉门体的门框的立体结构示意图。
其中，图1和图2中附图标记与部件名称之间的对应关系为：
1ˊ微波炉门体，10ˊ门框，100ˊ沟槽，11ˊ阻气门，12ˊ门玻璃。
图3至图7中附图标记与部件名称之间的对应关系为：
1门框，10门框本体，100侧壁，101围边，102排气孔，103凸槽，11折边，110竖边，111横边，12沟槽，130倒角，131倒角。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
下面参照附图描述本发明一些实施例提供的微波炉门体的门框。
如图3至图5所示，本发明的一些实施例提供了一种微波炉门体的门框1，包括：门框本体10和多个截面呈L形的折边11。
其中，所述门框本体10呈圆形或椭圆形，且所述门框本体10的侧壁100的上端向外弯折形成围边101；
每一所述折边11的竖边均与所述围边101的外边缘相连，横边朝向所述门框本体10的侧壁100，且每一所述折边11、所述围边101与所述门框本体10的侧壁100构成沟槽12，多个所述折边11沿所述门框本体10的周向均匀设置。
本发明的上述实施例中，门框本体呈圆形或椭圆形，这样与门框本体的围边上的多个折边也围绕圆形或椭圆形的周向分布，由多个折边、围边、门框本体的侧壁的外壁面构成多个沟槽也围绕圆形或椭圆形的周向分布，使得由多个沟槽构成的扼流腔呈圆形或椭圆形，与现有技术中的方形的门框相比，圆形或椭圆形的门框本体各处均圆滑过渡，不存在拐角，使得沟槽的结构易保持稳定，可良好地保持门框与微波炉前板之间的缝隙，防止缝隙过大造成的微波发生衍射，进而导致微波泄露现象发生；同时与方形的门框相比，圆形或椭圆形的门框本体使得微波炉门体整体也呈圆形或椭圆形，有效改善了电磁场分布不均的问题，且提高了加热腔空间的使用率。
优选地，如图6所示，所述门框本体10呈圆形，所述门框本体10的底壁的下壁面与所述围边101的上壁面之间的高度差a为20mm-30mm；
所述门框本体10的侧壁100的外壁面的下端与所述折边11的竖边的外壁面之间的距离b为11mm-25mm；
所述门框本体10的底壁的下壁面与所述折边11的横边111的下端面之间的高度差c为2.5mm-3mm；
所述门框本体10的侧壁100的外壁面的下端与所述折边11的横边111的内端面之间的距离d为2.5mm-3mm。
在本发明的上述优选实施例中，a和b共同决定了扼流腔的大小，经过匹配及实验验证，当门框本体为圆形，且a＝25±5mm，b＝18mm±7mm时，扼流腔具有较好的防微波泄漏效果；c决定了门封的厚度，一般考虑最小化，如在2.5～3.0mm以内；d决定了电容性电抗的大小，经过匹配及实验验证，当门框本体为圆形，且d＝3.0～5.0mm时，扼流腔具有较好的防微波泄漏效果。
进一步，如图3所示，所述折边11的厚度X为8mm-14mm；
相邻所述折边11间的距离Y为3mm-13mm；
所述折边11的竖边110的高度Z为7mm-17mm。
X、Y和Z共同决定了电感电阻的大小，经过匹配及实验验证，当门框本体为圆形，且x＝11mm±3mm，y＝8mm±5mm，z＝12mm±5mm时，扼流腔具有较好的防微波泄漏效果。
在本发明的一实施例中，如图6所示，所述门框本体10的侧壁100与所述围边101的连接处设有倒角130。
进一步，如图6所示，所述折边11的横边111与竖边110的连接处设有倒角131。
需要说明的是，倒角130和131的半径在模具冲压允许的最小范围内。
在本发明的一些实施例中，所述门框本体10的中心设有向上或向下凸出的凸槽103。
进一步，所述凸槽103的高度为5mm-10mm。
通过在圆形或椭圆形的门框本体的中心设置向上或向下凸出，且凸出高度在5mm-10mm的圆形或椭圆形的凸槽(可通过冲压成型)，改善了微波场在腔体内的分布。
需要说明的是，凸槽的高度并不限于上述的5mm-10mm，可根据实际需要，自行设定，如图7所示的示例中，门框本体10的中心设有向上凸出的凸槽103，即将门框1设计成腔体。
在本发明的图3和图4所示的示例中，所述门框本体10上设有排气孔102。
通过在门框本体上设置多个排气孔，有利于使微波炉加热腔体内的蒸汽通过该排气孔排向外部。
本发明第二个方面的实施例提供了一种微波炉门体(图中未示出)，包括：环形的阻气门(图中未示出)、面板(图中未示出)和上述任一实施例所述的微波炉门体的门框1，并具有上述任一实施例所述的门框的全部有益效果，在此不再赘述。
具体地，所述阻气门安装在所述门框1上，且所述阻气门覆盖所述门框1上的沟槽12；
所述面板安装在所述门框1上。
需要说明的是，本发明实施例提供的门框为圆形或椭圆形，因此，阻气门和面板的形状需与门框的形状相适配。
进一步，所述阻气门为塑料件，所述门框1为金属件，所述面板为玻璃面板。当然，阻气门、门框和面板的材质并不限于以上所述，可根据实际需要，自行设定。
本发明第三方面的实施例提供了一种微波炉(图中未示出)，包括上述任一实施例所述的微波炉门体。
综上所述，本发明实施例提供的微波炉门体的门框，通过将门框本体设计成圆形或椭圆形，使得门框本体上不存在拐角，有利于沟槽的结构保持稳定，进而使得门框与微波炉前板之间的缝隙保持稳定，防止缝隙过大造成的微波发生衍射，进而导致微波泄露现象发生；同时圆形或椭圆形的门框本体，有效改善了电磁场分布不均的问题，且提高了加热腔空间的使用率。
在本发明的描述中，术语“多个”是指两个或两个以上；术语“安装”、“连接”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明的描述中，需要理解的是，术语“上”、“下”等指示的方位是基于附图所示的方位，仅是为了便于描述本发明和简化描述，而不是指示或暗示 所指的装置或元件必须具有特定的方位，因此不能理解为对本发明的限制。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种微波炉门体的门框，其特征在于，包括：
    门框本体，所述门框本体呈圆形或椭圆形，且所述门框本体的侧壁的上端向外弯折形成围边；和
    多个呈L形的折边，所述折边的竖边与所述围边的外边缘相连，横边朝向所述门框本体的侧壁，且所述折边、所述围边与所述门框本体的侧壁构成沟槽。
  2. 根据权利要求1所述的微波炉门体的门框，其特征在于，
    所述门框本体的底壁的下壁面与所述围边的上壁面之间的高度差为20mm-30mm；和/或
    所述门框本体的侧壁的外壁面的下端与所述折边的竖边的外壁面之间的距离为11mm-25mm；和/或
    所述门框本体的底壁的下壁面与所述折边的横边的下端面之间的高度差为2.5mm-3mm；和/或
    所述门框本体的侧壁的外壁面的下端与所述折边的横边的内端面之间的距离为2.5mm-3mm。
  3. 根据权利要求1所述的微波炉门体的门框，其特征在于，
    所述折边的竖边的高度为7mm-17mm；和/或
    所述折边的厚度为8mm-14mm；和/或
    相邻所述折边间的距离为3mm-13mm。
  4. 根据权利要求1所述的微波炉门体的门框，其特征在于，
    多个所述折边沿所述门框本体的周向均匀设置。
  5. 根据权利要求1所述的微波炉门体的门框，其特征在于，
    所述门框本体的侧壁与所述围边的连接处设有倒角；和/或
    所述折边的横边与竖边的连接处设有倒角。
  6. 根据权利要求1至5中任一项所述的微波炉门体的门框，其特征在于，
    所述门框本体的中心设有向上或向下凸出的凸槽。
  7. 根据权利要求6所述的微波炉门体的门框，其特征在于，
    所述凸槽的高度为5mm-10mm。
  8. 根据权利要求1至5中任一项所述的微波炉门体的门框，其特征在于，
    所述门框本体上设有排气孔。
  9. 一种微波炉门体，其特征在于，包括：
    权利要求1至8中任一项所述的微波炉门体的门框；
    环形的阻气门，安装在所述门框上，且所述阻气门覆盖所述门框上的沟槽；和
    面板，所述面板安装在所述门框上。
  10. 一种微波炉，其特征在于，包括如权利要求9所述的微波炉门体。
PCT/CN2015/091112 2015-02-13 2015-09-29 微波炉门体及其门框、微波炉 Ceased WO2016127655A1 (zh)

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CN104864426B (zh) * 2015-06-08 2018-04-27 广东美的厨房电器制造有限公司 微波烹饪工具
CN108366445B (zh) * 2018-02-08 2021-11-09 广东美的厨房电器制造有限公司 加热烹调器

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