A microwave shielding plate and microwave cooking device

A technology of cooking device and shielding plate, which is applied in microwave heating, electric heating device, magnetic field/electric field shielding and other directions, can solve problems such as failure to find microwave shielding structure damage, and achieve the effect of reducing danger

CN107218638BActive Publication Date: 2019-09-20GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-09-20

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Abstract

The invention relates to the field of microwave shielding technology, and provides a microwave shielding plate, which includes a plurality of conductive layers, conductors are respectively arranged in each of the conductive layers, and connection points are arranged at both ends of the conductors, so that the conductors are connected to conductive When in the loop, a shielding section covering the conductive layer is formed. Therefore, when the microwave shielding plate is installed in a corresponding microwave cooking device, the conductor is connected into the conductive loop and forms a shielding section covering the conductive layer. Once the microwave shielding plate is damaged, the electrical properties of the conductive circuit will change, that is, the microwave leakage can be detected in time by detecting the change of electrical properties, so as to objectively reflect whether the shielding material of the furnace door is invalid, and accurately monitor the microwave leakage. , timely control the switch of the microwave cooking device, greatly reducing the danger caused by microwave leakage.
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Description

technical field

[0001] The invention relates to the technical field of microwave shielding, in particular to a microwave shielding plate and a microwave cooking device. Background technique

[0002] Taking a microwave oven as an example, metal mesh is used for microwave shielding in traditional microwave oven doors. When the metal mesh is used as a microwave shielding layer, the damage of the microwave shielding layer is relatively intuitive. With the application of visible microwave oven doors, microwave shielding layers that meet the visualization requirements have gradually appeared. Once these visible microwave shielding layers are damaged, they are not easy to be observed by the naked eye, which leads to microwave leakage in the microwave cooking device after the microwave shielding layer is damaged. . Contents of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] One o...

Examples

Embodiment 1

[0027] Without loss of generality, the first embodiment will be described by taking the microwave shielding plate 12 installed on the oven door 2 of the microwave cooking device as an example. It should be understood that the microwave shielding plate 12 of the first embodiment can also be applied to any other products requiring microwave shielding, and can be installed at any position of the products. Moreover, the microwave shielding plate 12 of the first embodiment can also be an independent product.

[0028] See figure 1 , the microwave cooking device of the first embodiment includes a furnace body 1 and a furnace door 2 .

[0029] For the structure of furnace door 2, please refer to figure 2 and image 3 . Among them, from image 3 It can be seen from the figure that the oven door 2 includes a microwave shielding plate 12 .

[0030] and, by image 3 It can be found that a protective cover 13 is provided on the outer side of the furnace door 2 (that is, the side aw...

Embodiment 2

[0059] The difference from the first embodiment is that the conductor of the second embodiment is continuously bent in a plane to form a spiral shape.

[0060] When the number of conductive layers is one layer, and the conductor includes multiple conductive coils, it is necessary to ensure that the gap between adjacent conductive coils of the conductor is not greater than 1 / 20 of the working wavelength of the microwave cooking device, so as to ensure that the microwave shielding plate 12 shielding effectiveness.

[0061] Of course, when the adjacent conductive coils are arranged in close proximity, the shielding effect is the best at this time, and it is basically guaranteed that there is no path that can directly pass through the conductive layer.