We are in the age of technology, where people can do everything easily and quickly thanks to smart, advanced, powerful devices. However, trying to improve technological products is not everything, such as microwave ovens.
In the 21st century, people can make electric cars that operate silently and quietly, but how can the microwave oven be incomplete, still vibrate and make noise. Why so? Why are they making so much noise? According to Science ABC, the short answer is that because of some of the components needed to cool and heat the device , noise is almost inevitable, and it’s much more expensive to manufacture a stationary microwave. .
If manufacturing a stationary microwave oven, it will cost a lot more.
Using microwaves to heat food seems like technology from the future, but in fact, the technology is already in the past. A vacuum tube can be easily found in an old transistor radio, and for the device to work, current needs to pass between the electrodes in the tube. The tube is called a magnetron and is located on the back of the oven and functions to generate energy to heat the food. The second major component is the waveguide that drives the energy from the magnetron to the food. The final element is the vapor chamber, which is sealed and insulated to keep microwave energies from escaping.
No need to use fire, microwave oven helps users save a lot of time in reheating or defrosting food. The magnetron will interact directly with the water molecules in the food, requiring them to adapt to the magnetic field inside the microwave, causing them to move very quickly, vibrate and increase the temperature gradually. From there, it helps to heat food much faster, 10-15 times faster than the traditional method.
In fact, the sound coming from the oven is because the cooling fan must blow continuously to prevent the oven from overheating.
Many people think that the noise of the microwave is caused by the magnetron, but the sound frequency of microwaves is much higher than that of human hearing. In fact, the sound coming from the oven is because the cooling fan must blow continuously to prevent the oven from overheating. It is possible that the magnetron makes noise but only in certain models. However, the sound is also caused by other components such as diodes, capacitors and transformers in the power handling process.
If you hear other microwave noises like grinding or squealing, it’s a sign that the stirrer’s motor is failing or the rotary motor is getting old. While this won’t stop the microwave from working, it will reduce performance, making the noise worse. And it’s cheaper to buy a new microwave than it is to repair because they’re old and difficult to repair.
If you are determined to buy a completely silent microwave, it will be quite difficult. As mentioned above, noisy components are essential for the operation of microwave ovens, but to satisfy user needs, it requires manufacturers to create a more complicated and expensive device. Fortunately the microwave is only used for a few minutes a day, the noise is not unacceptable.