WO2018223676A1 - 微波烹饪装置 - Google Patents

微波烹饪装置 Download PDF

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Publication number
WO2018223676A1
WO2018223676A1 PCT/CN2017/120082 CN2017120082W WO2018223676A1 WO 2018223676 A1 WO2018223676 A1 WO 2018223676A1 CN 2017120082 W CN2017120082 W CN 2017120082W WO 2018223676 A1 WO2018223676 A1 WO 2018223676A1
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Prior art keywords
microwave
cooking apparatus
shielding layer
microwave cooking
antenna
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PCT/CN2017/120082
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English (en)
French (fr)
Inventor
夏然
黄韬妃
孙宁
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广东美的厨房电器制造有限公司
美的集团股份有限公司
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Publication of WO2018223676A1 publication Critical patent/WO2018223676A1/zh

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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
    • F24C15/00—Details
    • 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
    • H05B6/6432—Aspects relating to testing or detecting leakage in a microwave heating apparatus
    • 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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors

Definitions

  • the invention belongs to the field of microwave cooking technology, and in particular relates to a microwave cooking device.
  • a metal mesh is used for microwave shielding in a conventional microwave oven door.
  • the damage of the microwave shielding layer is relatively intuitive.
  • the microwave shielding layer meeting the visualization requirements has emerged, and these visible microwave shielding layers are not easily observed once damaged by the naked eye, thereby causing microwave leakage of the microwave cooking device after the microwave shielding layer is damaged. .
  • the present invention aims to solve at least one of the technical problems existing in the prior art or related art.
  • One of the objects of the present invention is to provide a microwave cooking apparatus that solves the problem of the prior art that the microwave shielding layer is not damaged due to damage of the microwave shielding layer.
  • the present invention provides a microwave cooking apparatus comprising a furnace body and a furnace door, the furnace door comprising a microwave shielding layer and an electromagnetic radiation detecting component, the electromagnetic radiation detecting component comprising a detection for sensing microwave leakage a probe, and the detecting probe is located on a side of the microwave shielding layer away from the furnace body.
  • the number of the detecting probes is plural and arranged in a planar array such that the detection areas of all the detecting probes cover the entire microwave shielding layer.
  • each of the detection probes is an antenna
  • the detection assembly further includes an impedance and electrical performance detector, the antenna, the impedance and the electrical performance detector being connected to form a conductive loop.
  • the antenna is a monopole antenna and/or a dipole antenna.
  • the distance D between adjacent ones of the monopole antennas and/or dipole antennas is less than twice the attenuation radius R of the signal in the operating frequency thereof.
  • the antenna is a loop antenna.
  • the loop antennas adjacent to the detection probes are immediately adjacent to each other.
  • the electromagnetic radiation detecting component further comprises:
  • a processing unit connected to the electrical performance detector, and calculating an average electric field density of a region where the detecting probe is located according to data of the electrical performance detector;
  • the determining unit is connected to the processing unit to receive the average electric field density, and stores an average electric field density amplitude Smax, and sends an alarm signal when the average electric field density is not less than the average electric field density amplitude Smax.
  • the electromagnetic radiation detecting component further comprises a filtering denoising unit connected to the detecting probe for filtering and denoising the signal of the detecting probe.
  • the microwave shielding layer and/or the detecting probe are made of a visible material.
  • the oven door further includes a protective cover plate on a side of the microwave shielding layer away from the furnace body, and the detecting probe is disposed between the microwave shielding layer and the protective cover plate.
  • the oven door further comprises a door frame, the protective cover plate and the microwave shielding layer are installed in the door frame, and a visible viewing window is formed on the protective cover plate and the microwave shielding layer.
  • the edge of the oven door is provided with a choke, and the choke is disposed on the door frame of the oven door.
  • the microwave cooking device of the present invention is provided with an electromagnetic radiation detecting component, and once the microwave shielding layer is damaged, the electromagnetic radiation component can detect the microwave leakage in time. Therefore, objectively reacting whether the shielding material of the furnace door fails, accurately monitoring the leakage of the microwave, and timely controlling the switch of the microwave cooking device, greatly reduces the danger caused by the microwave leakage.
  • FIG. 1 is a schematic structural view of a microwave cooking apparatus of Embodiment 1;
  • Figure 2 is a front elevational view showing the oven door of the microwave cooking apparatus of the first embodiment
  • Figure 3 is a side cross-sectional view showing the oven door of the microwave cooking apparatus of the first embodiment
  • FIG. 4 is a schematic view showing the installation of the electromagnetic radiation detecting assembly of the first embodiment
  • Figure 5 is a schematic view showing the positional relationship between a plurality of detecting probes of the first embodiment
  • FIG. 6 is a schematic structural view of an electromagnetic radiation detecting assembly of Embodiment 1;
  • FIG. 7 is a partial structural schematic view of still another electromagnetic radiation detecting assembly of Embodiment 1;
  • Figure 8 is a schematic view showing the installation of the electromagnetic radiation detecting assembly of the second embodiment
  • Embodiment 9 is a schematic structural view of an electromagnetic radiation detecting assembly of Embodiment 2.
  • the microwave cooking apparatus of the first embodiment includes a furnace body 1 and a furnace door 2.
  • the structure of the furnace door 2 can be seen in Figures 2 and 3.
  • the microwave shielding layer 12 of the oven door 2 is made of a visible material. Further, a visual observation window 3 is formed on the oven door 2.
  • the oven door 2 in the microwave cooking apparatus of the first embodiment may also be invisible. That is, the electromagnetic radiation detecting assembly mentioned below can also be mounted on the side of the conventional microwave shielding layer 12 away from the furnace body 1.
  • the oven door 2 of the first embodiment includes a microwave shielding layer 12 and an electromagnetic radiation detecting component
  • the electromagnetic radiation detecting component includes a detecting probe 7 for sensing microwave leakage
  • the detecting probe 7 is located at the microwave shielding
  • the layer 12 is remote from the side of the furnace body 1.
  • the outer side corresponds to “the side away from the furnace body 1"
  • the inner side corresponds to "the side close to the furnace body 1".
  • the electromagnetic radiation detecting component since the electromagnetic radiation detecting component is provided, once the microwave shielding layer 12 is damaged, the electromagnetic radiation component can detect the microwave leakage in time. Therefore, objectively reacting whether the shielding material of the furnace door 2 fails, accurately monitoring the leakage of the microwave, and timely controlling the switch of the microwave cooking device, greatly reduces the danger caused by the microwave leakage.
  • the number of detecting probes 7 is plural and arranged in a planar array such that the detection areas of all of the detecting probes 7 cover the entire microwave shielding layer 12. Thereby, when a leak occurs at any position of the microwave shielding layer 12, the leakage can be detected by the corresponding detecting probe 7.
  • the detecting probe 7 is preferably, but not necessarily, an antenna. Further, it is preferable to use a full-line antenna as the detecting probe 7.
  • the antenna is made of a material having good electrical conductivity, for example, the antenna can be made of metal.
  • the antenna in order to ensure the visibility of the oven door 2, it is preferable, but not necessary, to use a transparent conductive material for the antenna.
  • the antenna is made of a transparent conductive material, the appearance of the oven door 2 can also be ensured. Furthermore, the antenna is not electrically connected to other conductive portions of the oven door 2.
  • the detection assembly further includes an impedance 9 and an electrical performance detector, the antenna, the impedance 9 and the electrical performance detector being connected to form a conductive loop.
  • the impedance 9 and the installation position of the electrical performance detector are not limited, and may be installed on the furnace door 2 corresponding to the position of the microwave shielding layer 12, or may be installed at other positions on the furnace door 2, or even installed in the furnace.
  • impedance 9 is Z.
  • the voltage V across the impedance 9 is detected by an electrical performance detector.
  • the electromagnetic field energy density S is obtained by the impedance 9Z and the voltage V, and it is judged whether or not the furnace door 2 leaks by judging the magnitude of the electromagnetic field energy density S.
  • the electromagnetic field energy density S at a distance r from the antenna is:
  • the distance D between adjacent ones of the antennas is less than twice the attenuation radius R of the signal in the operating frequency thereof, thereby ensuring a sufficient standing wave ratio and reducing the error.
  • the circle is circled with each antenna as the center R, all the circles can completely cover the microwave shielding layer 12, thereby ensuring that the microwave shielding layer 12 has no exposed area.
  • a linear antenna such as a monopole antenna 8 and a dipole antenna 10 is used as the detecting probe 7.
  • the antenna is the monopole antenna 8
  • the structure of the electromagnetic radiation detecting component is shown in FIG. 6 (the electrical performance detector is not shown in FIG. 6).
  • the structure of the electromagnetic radiation detecting assembly is shown in Fig. 7 (the electrical performance detector is not shown in Fig. 7).
  • the linear antenna such as the monopole antenna 8 and the dipole antenna 10 is used as the detecting probe 7, since it is smaller in volume than other forms of the antenna, the appearance of the microwave cooking apparatus is hardly affected.
  • the electromagnetic radiation detecting component further includes:
  • a processing unit connected to the electrical performance detector, and calculating an average electric field density of a region where the detecting probe 7 is located according to the data of the electrical performance detector;
  • the determining unit is connected to the processing unit to receive the average electric field density, and stores an average electric field density amplitude Smax, and sends an alarm signal when the average electric field density is not less than the average electric field density amplitude Smax.
  • the electromagnetic radiation detecting component further comprises a filter denoising unit 6, see Fig. 4.
  • the filter denoising unit 6 is connected to the detecting probe 7 via a wire 15 for filtering and denoising the signal of the detecting probe 7.
  • the filter denoising unit 6 may be mounted on the oven door 2 or may be installed at other positions of the microwave cooking device.
  • the oven door 2 further includes a protective cover 13 positioned outside the microwave shielding layer 12 such that the detection probe 7 is disposed between the microwave shielding layer 12 and the protective cover 13. Thereby, the protective cover 13 can protect the detecting probe 7 and the microwave shielding layer 12 on the inner side thereof.
  • the oven door 2 further includes a mounting support plate 11 on a side of the microwave shielding layer 12 adjacent to the furnace body 1.
  • the oven door 2 also includes a door frame 4, which is generally selected.
  • the protective cover 13 and the microwave shielding layer 12 are mounted in the door frame 4, and a visible viewing window 3 is formed on the protective cover 13 and the microwave shielding layer 12.
  • the edge of the oven door 2 is provided with a choke 4 which is arranged on the door frame 4 of the oven door 2.
  • a nip is formed between the choke coil 4 and the above-described mounting support plate 11, which can restrict microwave leakage.
  • the microwave cooking device of the second embodiment has a probe of a loop antenna 14. Assuming that the area enclosed by a loop antenna 14 is A, the loop antenna 14 can effectively receive the intensity of the microwave in the area of the current area A.
  • At least one loop antenna 14 is disposed on one oven door 2.
  • a plurality of loop antennas 14 can be arranged in an array.
  • the number of the specific loop antennas 14 can be set according to the detection accuracy or the like, and the microwave receiving range of the loop antenna 14 should be covered as much as possible to cover the surface of the furnace door 2 to ensure the validity of the detection.
  • the number of loop antennas 14 is plural, the loop antennas 14 adjacent to the detecting probes 7 are immediately distributed to ensure the validity of the detection.
  • the loop antenna 14 has a rectangular shape.
  • the loop antenna 14 may also have a circular shape or any other ring shape.
  • the impedance 9 is R
  • the voltage generated on the impedance 9 is V
  • the voltage gain of the loop antenna 14 at the operating frequency of the microwave cooking device is G
  • the average power density S in the area surrounded by the loop antenna 14 (GV)2/RA.
  • the microwave cooking device can be powered off by triggering the power-off control unit, and the user is informed that the microwave cooking device door 2 leaks excessively, and the position of the loop antenna 14 where the standard is exceeded.
  • the detecting probe 7 adopts a loop antenna 14, which is convenient for design and manufacture.
  • electromagnetic radiation detecting assembly of the above embodiment can be applied to other structures of the microwave cooking device in addition to being applied to the oven door 2.

Abstract

一种微波烹饪装置，该微波烹饪装置包括炉体(1)和炉门(2)，所述炉门(2)包括微波屏蔽层(12)和电磁辐射检测组件，所述电磁辐射检测组件包括用于感应微波泄露的检测探头，且所述检测探头位于所述微波屏蔽层(12)远离所述炉体(1)的一侧。

Description

微波烹饪装置 技术领域
本发明属于微波烹饪技术领域，尤其涉及一种微波烹饪装置。
背景技术
以微波炉为例，传统微波炉门中使用金属网进行微波屏蔽，金属网作为微波屏蔽层时，微波屏蔽层的损坏比较直观。而随着可视化微波炉门的应用，逐渐出现了满足可视化要求的微波屏蔽层，而这些可视的微波屏蔽层一旦损坏肉眼不容易观察到，由此导致微波屏蔽层损坏后微波烹饪装置发生微波泄露。
发明内容
(一)技术方案
本发明旨在至少解决现有技术或相关技术中存在的技术问题之一。
本发明的其中一个目的是：提供一种微波烹饪装置，解决现有技术中存在的无法发现微波屏蔽层损坏导致微波烹饪装置微波泄露的问题。
为了实现该目的，本发明提供了一种微波烹饪装置，包括炉体和炉门，所述炉门包括微波屏蔽层和电磁辐射检测组件，所述电磁辐射检测组件包括用于感应微波泄露的检测探头，且所述检测探头位于所述微波屏蔽层远离所述炉体的一侧。
优选的，所述检测探头的数量为多个且呈平面阵列排布，使得所有所述检测探头的检测区域覆盖整个所述微波屏蔽层。
优选的，各个所述检测探头为天线，所述检测组件还包括阻抗和电气性能检测器，所述天线、阻抗和所述电气性能检测器连接形成导电回路。
优选的，所述天线为单极子天线和/或偶极子天线。
优选的，相邻所述单极子天线和/或偶极子天线之间的距离D小于两倍其工作频率中信号的-3dB衰减半径R。
优选的，所述天线为环形天线。
优选的，相邻所述检测探头中的环形天线紧邻分布。
优选的，所述电磁辐射检测组件还包括：
处理单元，与所述电气性能检测器连接，并根据所述电气性能检测器的数据计算出所述 检测探头所在区域的平均电场密度；
判断单元，与所述处理单元连接以接收所述平均电场密度，且存储有平均电场密度幅值Smax，当平均电场密度不小于所述平均电场密度幅值Smax时，发出报警信号。
优选的，所述电磁辐射检测组件还包括滤波去噪单元，其连接所述检测探头，用于对所述检测探头的信号进行滤波去噪处理。
优选的，所述微波屏蔽层和/或所述检测探头采用可视材料。
优选的，所述炉门还包括保护盖板，位于所述微波屏蔽层远离所述炉体的一侧，且所述检测探头设置在所述微波屏蔽层和所述保护盖板之间。
优选的，所述炉门还包括门框，所述保护盖板和所述微波屏蔽层安装在所述门框中，且所述保护盖板和所述微波屏蔽层上形成有可视观察窗。
优选的，所述炉门的边缘设置有扼流圈，所述扼流圈设置在炉门的门框上。
本发明的技术方案具有以下优点：本发明的微波烹饪装置，由于设置有电磁辐射检测组件，一旦微波屏蔽层损坏，电磁辐射组件可以及时检测到微波泄露。从而客观地反应炉门的屏蔽材料是否失效，准确的监控微波的泄露，及时控制微波烹饪装置的开关，在很大程度上降低了微波泄漏造成的危险。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是实施例一的微波烹饪装置的结构示意图；
图2是实施例一的微波烹饪装置的炉门的正视示意图；
图3是实施例一的微波烹饪装置的炉门的侧面剖视图；
图4是实施例一的电磁辐射检测组件的安装示意图；
图5是实施例一的多个检测探头之间的位置关系示意图；
图6是实施例一的一种电磁辐射检测组件的结构示意图；
图7是实施例一的又一种电磁辐射检测组件的局部结构示意图；
图8是实施例二的电磁辐射检测组件的安装示意图；
图9是实施例二的电磁辐射检测组件的结构示意图；
附图标记：1、炉体；2、炉门；3、可视观察窗；4、门框；5、扼流圈；6、滤波去噪单 元；7、检测探头；8、单极子天线；9、阻抗；10、偶极子天线；11、安装支撑板；12、微波屏蔽层；13、保护盖板；14、环形天线；15、导线。
具体实施方式
下面结合说明书附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例仅用于说明本发明，但不能用来限制本发明的范围。
实施例一
请参见图1，本实施例一的微波烹饪装置，包括炉体1和炉门2。其中，炉门2的结构可以参见图2和图3。
需要说明的是，本实施例一仅以可视炉门2为例进行说明。从而，炉门2的微波屏蔽层12采用可视材料。并且，在炉门2上形成有可视观察窗3。
不失一般性，本实施例一的微波烹饪装置中的炉门2也可以是不可视的。也即，下面提到的电磁辐射检测组件还可以安装在传统的微波屏蔽层12远离炉体1的一侧。
具体的，本实施例一的炉门2包括微波屏蔽层12和电磁辐射检测组件，所述电磁辐射检测组件包括用于感应微波泄露的检测探头7，且所述检测探头7位于所述微波屏蔽层12远离所述炉体1的一侧。
下文中的外侧对应“远离所述炉体1的一侧”，内侧对应“靠近所述炉体1的一侧”。
本实施例一的微波烹饪装置，由于设置有电磁辐射检测组件，一旦微波屏蔽层12损坏，电磁辐射组件可以及时检测到微波泄露。从而客观地反应炉门2的屏蔽材料是否失效，准确的监控微波的泄露，及时控制微波烹饪装置的开关，在很大程度上降低了微波泄漏造成的危险。
图4中，检测探头7的数量为多个且呈平面阵列排布，使得所有所述检测探头7的检测区域覆盖整个所述微波屏蔽层12。从而，当微波屏蔽层12任何位置发生泄漏时，都可以通过相应的检测探头7检测出泄漏情况。
其中，检测探头7优选但是不必须是天线。并且，优选采用全线天线作为检测探头7。天线由导电性能良好的材料制成，例如天线可以采用金属制成。其中，为了保证炉门2的可视性，优选但是不必须天线采用透明导电材料。采用透明导电材料制成天线时，还可以保证炉门2的美观性。此外，天线不和炉门2的其它导电部分电连接。
在此基础上，检测组件还包括阻抗9和电气性能检测器，所述天线、阻抗9和所述电气性能检测器连接形成导电回路。
其中，阻抗9和电气性能检测器的安装位置不受局限，既可以安装在炉门2上对应微波 屏蔽层12的位置，也可以安装在炉门2上的其它位置，甚至还可以安装在炉体1上。
假设阻抗9为Z。通过电气性能检测器检测阻抗9上的电压V。从而通过阻抗9Z和电压V求得电磁场能量密度S，并通过判断电磁场能量密度S的大小判断炉门2是否泄漏。
请参见图5，假设相邻天线之间的距离为D，工作频率中信号的-3dB衰减半径为R，天线在微波烹饪装置工作频率的电压增益为G，则与天线同极化方向的电磁场功率为P＝(GV)2/Z。
进一步的，根据电磁场传播公式，在距离天线距离为r处的电磁场能量密度S为：
Figure PCTCN2017120082-appb-000001
将电磁场能量密度S在R内积分，可得平均电场密度：
Figure PCTCN2017120082-appb-000002
当大于所设定的值时，则认为微波烹饪装置炉门2的泄漏达到报警值，此时可以判断微波屏蔽层12损坏；反之说明微波烹饪装置炉门2的泄漏尚在允许范围之内，则此时可以判断微波屏蔽层12正常工作。
其中，优选相邻所述天线之间的距离D小于两倍其工作频率中信号的-3dB衰减半径R，从而保证足够的驻波比且减小误差。并且，通过图5中还发现，以每个天线为中心R为半径画圆时，所有的圆可以完全覆盖微波屏蔽层12，从而保证微波屏蔽层12没有暴露区域。
本实施例一中，使用单极子天线8和偶极子天线10等线型天线作为检测探头7。
其中，当天线为单极子天线8时，电磁辐射检测组件的结构请参见图6(图6中未示出电气性能检测器)。
当天线为偶极子天线10时，电磁辐射检测组件的结构请参见图7(图7中未示出电气性能检测器)。
使用单极子天线8和偶极子天线10等线型天线作为检测探头7时，由于其体积比其它形式的天线要小，从而几乎不影响微波烹饪装置的外观。
本实施例一中，所述电磁辐射检测组件还包括：
处理单元，与所述电气性能检测器连接，并根据所述电气性能检测器的数据计算出所述检测探头7所在区域的平均电场密度；
判断单元，与所述处理单元连接以接收所述平均电场密度，且存储有平均电场密度幅值Smax，当平均电场密度不小于所述平均电场密度幅值Smax时，发出报警信号。
此外，优选所述电磁辐射检测组件还包括滤波去噪单元6，请参见图4。滤波去噪单元6通过导线15连接检测探头7，用于对所述检测探头7的信号进行滤波去噪处理。其中，滤 波去噪单元6可以安装在炉门2上，也可以安装在微波烹饪装置的其它位置。
进一步参见图3，炉门2还包括保护盖板13，位于所述微波屏蔽层12外侧，并使得所述检测探头7设置在所述微波屏蔽层12和所述保护盖板13之间。从而，保护盖板13可以保护其内侧的检测探头7和微波屏蔽层12。炉门2还包括有安装支撑板11，位于微波屏蔽层12靠近所述炉体1的一侧。
此外，炉门2还包括门框4，一般选择金属门框4。上述保护盖板13和微波屏蔽层12安装在所述门框4中，且所述保护盖板13和所述微波屏蔽层12上形成有可视观察窗3。
从图2中还可以发现，炉门2的边缘设置有扼流圈4，所述扼流圈4设置在炉门2的门框4上。在扼流圈4和上述安装支撑板11之间形成有夹缝，其可以限制微波泄漏。
实施例二
请参见图8，和实施例一不同之处在于，本实施例二的微波烹饪装置，其探头为环形天线14。假设一个环形天线14包围的区域面积为A，那么环形天线14可以有效接收当前面积为A的区域内的微波强度。
其中，一个炉门2上至少设置有一个环形天线14。当一个环形天线14无法有效覆盖整个炉门2的表面积时，可以阵列设置多个环形天线14。具体环形天线14的数量可以根据探测精度等进行设置，且应当尽可能使得环形天线14的微波接收范围覆盖住炉门2表面，以保证检测的有效性。当环形天线14的数量为多个时，相邻所述检测探头7中的环形天线14紧邻分布，以保证检测的有效性。
请参见图9，环形天线14呈矩形，当然环形天线14还可以呈圆环形或者其它任意环形。
本实施例二中，假设阻抗9为R，阻抗9上生成的电压为V，环形天线14在微波烹饪装置工作频率的电压增益为G，则环形天线14所包围的面积内的平均功率密度S＝(GV)2/RA.
当S大于所设定的值时，则认为微波烹饪装置炉门2的泄漏达到报警的值。此时，可以通过触发断电控制单元，使得微波烹饪装置断电，并告知用户微波烹饪装置炉门2泄漏超标，以及超标所在的环形天线14位置。
本实施例二中，检测探头7采用环形天线14，其便于设计和制造。
需要说明的是，上述实施例的电磁辐射检测组件，除了可以应用在炉门2上，还可以应用在微波烹饪装置的其它结构上。
以上实施方式仅用于说明本发明，而非对本发明的限制。本领域的普通技术人员能够在上述的两种实施例的基础上得到，除了上述两种实施例所描述的连杆结构的连接关系外，对其连杆结构进行连接关系的修改进而实现通过按压或提升端帽达到拉钩向外扩张或向内收拢的目的都属于本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。

Claims (13)

  1. 一种微波烹饪装置，包括炉体和炉门，其特征在于，所述炉门包括微波屏蔽层和电磁辐射检测组件，所述电磁辐射检测组件包括用于感应微波泄露的检测探头，且所述检测探头位于所述微波屏蔽层远离所述炉体的一侧。
  2. 根据权利要求1所述的微波烹饪装置，其特征在于，所述检测探头的数量为多个且呈平面阵列排布，使得所有所述检测探头的检测区域覆盖整个所述微波屏蔽层。
  3. 根据权利要求2所述的微波烹饪装置，其特征在于，各个所述检测探头为天线，所述检测组件还包括阻抗和电气性能检测器，所述天线、阻抗和所述电气性能检测器连接形成导电回路。
  4. 根据权利要求3所述的微波烹饪装置，其特征在于，所述天线为单极子天线和/或偶极子天线。
  5. 根据权利要求4所述的微波烹饪装置，其特征在于，相邻所述单极子天线和/或偶极子天线之间的距离D小于两倍其工作频率中信号的-3dB衰减半径R。
  6. 根据权利要求3所述的微波烹饪装置，其特征在于，所述天线为环形天线。
  7. 根据权利要求6所述的微波烹饪装置，其特征在于，相邻所述检测探头中的环形天线紧邻分布。
  8. 根据权利要求3至7中任意一项所述的微波烹饪装置，其特征在于，所述电磁辐射检测组件还包括：
    处理单元，与所述电气性能检测器连接，并根据所述电气性能检测器的数据计算出所述检测探头所在区域的平均电场密度；
    判断单元，与所述处理单元连接以接收所述平均电场密度，且存储有平均电场密度幅值Smax，当平均电场密度不小于所述平均电场密度幅值Smax时，发出报警信号。
  9. 根据权利要求3至7中任意一项所述的微波烹饪装置，其特征在于，其特征在于，所述电磁辐射检测组件还包括滤波去噪单元，其连接所述检测探头，用于对所述检测探头的信号进行滤波去噪处理。
  10. 根据权利要求1所述的微波烹饪装置，其特征在于，所述微波屏蔽层和/或所述检测探头采用可视材料。
  11. 根据权利要求1所述的微波烹饪装置，其特征在于，所述炉门还包括保护盖板，位于所述微波屏蔽层远离所述炉体的一侧，且所述检测探头设置在所述微波屏蔽层和所述保护盖板之间。
  12. 根据权利要求11所述的微波烹饪装置，其特征在于，所述炉门还包括门框，所述保护盖板和所述微波屏蔽层安装在所述门框中，且所述保护盖板和所述微波屏蔽层上形成有可视观察窗。
  13. 根据权利要求1所述的微波烹饪装置，其特征在于，所述炉门的边缘设置有扼流圈，所述扼流圈设置在炉门的门框上。
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