Self-inspection and handling of microwave oven magnetic leakage layer damage

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The Shimmer in the microwave door, or the sudden noise of an FM radio, could be the kitchen assistant's security alert. The magnetic flux leakage layer of the microwave oven is an important line of defense to protect the safety of the home. It is essential for every user to learn to identify the signs of damage and master the correct response method.

(1)、The basic principle and importance of magnetic flux leakage layer in microwave oven

1. How microwave ovens work

Microwave ovens rapidly heat food by emitting high-frequency electromagnetic waves that cause water molecules in the food to vibrate to produce heat. This electromagnetic wave belongs to non-ionizing radiation, although the energy is low, but if a large number of leakage may still cause health effects.

2. Protection mechanism of magnetic flux leakage layer

Magnetic flux leakage layer is the core safety barrier of microwave oven, which is composed of door seal, choke chamber and metal shielding layer. Its role is to restrict the microwave in the furnace cavity to prevent leakage. As the first line of defense, the door seal can seal the gap between the furnace door and the cavity. The choke cavity is designed with special structure, so that the microwave entering the groove is reflected by the inner wall and offsets each other.

3. The hazards of magnetic flux leakage

When the magnetic flux leakage layer is damaged due to aging, impact or improper use, microwaves may leak through cracks in doors or observation windows. If long-term exposure to excessive leakage of microwaves, may cause potential health risks.

(2)、Signs and methods of identifying the damage of magnetic flux leakage layer

1. Visual inspection

Close the microwave door and look for cracks. If the door body loose, poor switching or observation window cracks, may suggest that the magnetic flux leakage layer damage. When the microwave oven is working, if there is a“Hiss” sound near the door crack, it may be the acoustic signal of microwave leakage.

2.Simple home testing

①.Fluorescent lamp testing

In the dark, place a small fluorescent lamp close to the door of a working microwave oven. If the lamp emits shimmer, there is microwave leakage. A glass of water is placed in the oven as a microwave absorbing load. The method is based on the physical characteristics of microwave excitable fluorescent materials, and the results are reliable.

②.FM radio detection

Hold the FM radio close to the door of the microwave oven and move it slowly. If the radio emits a noise that disappears at a distance, it indicates a possible microwave leakage. It should be noted that the mobile phone detection method is not scientific, because the mobile phone signal frequency and microwave oven working frequency is different.

(3)、Emergency treatment measures after leakage is found

1. Immediate action steps

Turn off the microwave and unplug the power immediately after any signs of leakage are detected to avoid further exposure. Move the microwave oven to a secluded area and tell your family not to use it.

2. Professional maintenance process

Contact professional inspection and maintenance, non-professional personnel do not disassemble. The high-voltage capacitor inside the microwave oven may be charged even after power off, and improper operation may cause electric shock risk. Maintenance personnel will usually focus on the inspection of door seals, door hinges, magnetrons and high-voltage circuits and other key parts.

(4)、Maintenance and replacement decision-making guide

1. Maintenance economy and applicable scenarios

For microwave ovens with short service life or local problems, priority should be given to maintenance. Simple repairs, such as changing door seals, are usually more economical. Can continue to use safely after professional maintenance.

2. A sensible choice for a new machine

If the microwave oven is more than 8 years old, or the maintenance cost is too high, it is more sensible to replace the machine. Not only is older equipment a high risk of leakage, it is also less energy efficient. The new microwave oven adopts more advanced technology and sealing design, safety and energy efficiency are more guaranteed.

3. Preventive maintenance advice

Clean door seals regularly to avoid oil contamination. Open and close the furnace door lightly to prevent the door hinge from deforming. These simple maintenance measures can effectively extend the life of the microwave oven.

Conclusion

The magnetic flux leakage layer of the microwave oven is an invisible guard for home security. Through daily inspection, simple detection and timely maintenance, the risk of leakage can be significantly reduced. If the equipment is seriously aging, the replacement of new models in line with national safety standards, is responsible for the health of their families, but also a rational choice of consumption.