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The electrons inside the magnetron interact with the high-frequency electromagnetic field under the control of a constant perpendicular magnetic field and a constant electric field, and convert the energy obtained from the constant electric field into microwave energy to achieve the purpose of generating microwave energy. So how to deal with common faults of magnetron? Next Xiaobian introduced microwave magnetron working principle and magnetron repair method for everyone.
[Microwave magnetron working principle]
A constant DC voltage is applied between the anode and the cathode, and the electrons emitted from the cathode are influenced by the positive potential of the anode and fly to the anode. There is also a role of a magnet, and a magnetic field having a direction perpendicular to the electric field exists in space, so the electrons are in the magnetic field force. And under the action of electric field force for wheel pendulum movement. Because there is a high-frequency electric field in the anode resonant cavity, an "electron cloud" rotating around the anode is formed; when the rotational speed is synchronized with the high-frequency magnetic field, the electrons transfer all the energy to the high-frequency magnetic field, thereby maintaining the high-frequency oscillation. This high-frequency energy is output via the microwave energy output device and transmitted from the waveguide to the microwave oven to heat the food.
[Common magnetron fault maintenance]
1, magnetron filament plug fault
(1) Use a pistol drill to drill the four Rivet holes of the fixed insert.
(2) Use a flathead screwdriver and pliers to gently open the end cap. Do not open it with a screwdriver, but tap it in the direction of the screwdriver. Action should be light, do not get deformed, so as not to recover.
(3) Use needle-nose pliers to break the connection between the filament inductor and the plug, fix the new plug, and then weld it with gas welding. Of course, you can also use high-power soldering iron welding, but the filament work current, heat can not be overlooked. Gas welding is recommended for safety.
(4) When reverting, place the end cap as it is and align it with the pliers.
2, magnetron short-circuit leakage fault is generally between the filament socket and the shell breakdown. Replace the socket to repair it. (If the magnetron ages, there is no way to repair it. It can only be scrapped)
(1) welding the filaments and sockets with gas welding and silver electrodes. If it is the first time for novices to weld, you can use toilet paper to wrap around the socket, soak it with water, and then welding will be foolproof.
(2) Welding with medium heat, speed is quick and accurate. Otherwise it is easy to scrape the socket and melt it.
3, the waveguide is burned out
If the waveguide is burned out, just use a vise to gently unplug the waveguide's antenna cap and replace the new antenna cap. It is generally due to too much oil in the interior of the microwave oven, and the oil on the mica sheet causes the microwaves to be reflected at the mouth of the waveguide and burned.
Xiaobian Conclusion: The above is the microwave oven magnetron working principle and magnetron maintenance method that Xiaobian introduced to you. I hope to help you. For more information on magnetrons, please continue to pay attention to this website information platform.
[Microwave magnetron working principle]
A constant DC voltage is applied between the anode and the cathode, and the electrons emitted from the cathode are influenced by the positive potential of the anode and fly to the anode. There is also a role of a magnet, and a magnetic field having a direction perpendicular to the electric field exists in space, so the electrons are in the magnetic field force. And under the action of electric field force for wheel pendulum movement. Because there is a high-frequency electric field in the anode resonant cavity, an "electron cloud" rotating around the anode is formed; when the rotational speed is synchronized with the high-frequency magnetic field, the electrons transfer all the energy to the high-frequency magnetic field, thereby maintaining the high-frequency oscillation. This high-frequency energy is output via the microwave energy output device and transmitted from the waveguide to the microwave oven to heat the food.
[Common magnetron fault maintenance]
1, magnetron filament plug fault
(1) Use a pistol drill to drill the four Rivet holes of the fixed insert.
(2) Use a flathead screwdriver and pliers to gently open the end cap. Do not open it with a screwdriver, but tap it in the direction of the screwdriver. Action should be light, do not get deformed, so as not to recover.
(3) Use needle-nose pliers to break the connection between the filament inductor and the plug, fix the new plug, and then weld it with gas welding. Of course, you can also use high-power soldering iron welding, but the filament work current, heat can not be overlooked. Gas welding is recommended for safety.
(4) When reverting, place the end cap as it is and align it with the pliers.
2, magnetron short-circuit leakage fault is generally between the filament socket and the shell breakdown. Replace the socket to repair it. (If the magnetron ages, there is no way to repair it. It can only be scrapped)
(1) welding the filaments and sockets with gas welding and silver electrodes. If it is the first time for novices to weld, you can use toilet paper to wrap around the socket, soak it with water, and then welding will be foolproof.
(2) Welding with medium heat, speed is quick and accurate. Otherwise it is easy to scrape the socket and melt it.
3, the waveguide is burned out
If the waveguide is burned out, just use a vise to gently unplug the waveguide's antenna cap and replace the new antenna cap. It is generally due to too much oil in the interior of the microwave oven, and the oil on the mica sheet causes the microwaves to be reflected at the mouth of the waveguide and burned.
Xiaobian Conclusion: The above is the microwave oven magnetron working principle and magnetron maintenance method that Xiaobian introduced to you. I hope to help you. For more information on magnetrons, please continue to pay attention to this website information platform.
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