Device and method for suppressing electromagnetic leakage of microwave oven

A suppressing device and technology for microwave ovens, applied in the direction of microwave heating, heating methods, and household stoves/stoves, can solve the problems of preventing electromagnetic leakage, inconvenience, and user hazards at the root of the product, so as to reduce microwave leakage and improve Safety, the effect of reducing the difficulty of shielding

Active Publication Date: 2012-12-26
ANFANG HI TECH ELECTROMAGNETIC SAFETY TECHN BEIJING
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above radiation protection methods for electromagnetic leakage of microwave ovens are only one-sided. On the one hand, they cause inconvenience to users during use;

Method used

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  • Device and method for suppressing electromagnetic leakage of microwave oven
  • Device and method for suppressing electromagnetic leakage of microwave oven
  • Device and method for suppressing electromagnetic leakage of microwave oven

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Embodiment Construction

[0023] Therefore, the present invention suppresses the microwave leakage of the household microwave oven through electromagnetic radiation suppression measures such as shielding and isolation for microwave leakage paths such as gaps and holes in the microwave oven shell, thereby fundamentally realizing the effect of preventing leakage.

[0024] Due to certain processing errors in the metal shell of the microwave oven, there will be a certain gap (about 10 cm or more) around the shell when the shell is crimped with the cavity of the microwave oven. When the gap length of the shell is greater than 6cm (1 / 2 of the microwave wavelength), interference and coupling will occur between the high-voltage circuit and the low-voltage circuit. When the common-mode current or induced current flows, the impedance between them will be large, and a voltage drop will occur. When the voltage drop drives the gap of the antenna, microwaves will leak through the gap in large quantities. According to...

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Abstract

The invention relates to a device for suppressing the electromagnetic leakage of a microwave oven, which is characterized by comprising a box-gap shielding component, a box-hole shielding metal wire mesh, a metal isolating cover (15) and a metal isolating wall (19). The box-gap shielding component is a one-sided sawtooth-shaped beryllium copper reed (1); the box-hole shielding metal wire mesh is arranged on the round-hole areas on two sides of the wall of the microwave oven; the metal isolating cover (15) is assembled together with assembling box of a low-voltage circuit unit through two screw holes at the upper end and the bottom and hereby covers the low-voltage circuit unit; and the metal isolating wall (19) is arranged at the bottom of a microwave stirrer (7) at the tail end of a microwave launching and transmitting channel (18). Due to the adoption of the device, the difficulty of shielding the gap of the shell of the microwave oven is reduced, 90% of high-frequency electromagnetic waves are suppressed from leaking outside, and the purpose of preventing the electromagnetic leakage is achieved.

Description

technical field [0001] The invention relates to a device for preventing electromagnetic radiation, in particular to a device for suppressing electromagnetic leakage of a microwave oven and a method for using the device. Background technique [0002] The household microwave oven converts the AC220V AC voltage through the high-voltage transformer and high-voltage rectifier into a DC voltage of about 4000V through the electronic control system, and sends it to the microwave magnetron to generate 2.45GHz electromagnetic waves to heat food. After passing through the waveguide, the microwave energy is evenly diverged into the oven cavity by the stirrer, and forms multiple reflections in the metal oven cavity. Most of the reflected waves penetrate the food to achieve the purpose of heating the food. However, usually in the microwave emission process of the microwave oven electronic control system, it involves interference and coupling between high-voltage circuits, low-voltage circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/76F24C15/36
Inventor 张伟冯伟朱安东于天荣郭林
Owner ANFANG HI TECH ELECTROMAGNETIC SAFETY TECHN BEIJING
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