| 1 | Microwave heating is a heating method that relies on the material to absorb microwave energy and convert it into heat energy, so that the material itself is heated at the same time. Because of its high-frequency characteristics, the full wave electromagnetic field is carried out at an amazing speed of billions of times per second. Periodically, after the polar molecules in the material (typically water molecules, proteins, nucleic acids, fats, carbohydrates, etc.) absorb microwave energy, they are arranged in an orderly manner under the action of the microwave electromagnetic field, changing the original Randomly distributed orientation. Under the action of high-frequency electromagnetic field, these polar molecules also make electric field polar motion with the change of alternating electromagnetic field at the same speed, which will cause the movement and rotation of molecules, resulting in frequent collisions between molecules and a lot of friction. Heat, and manifests itself in the material in the form of heat, which leads to a rapid increase in the temperature of the material in a short period of time and rapid drying of water molecules. |
| 3 | Features of microwave heating: A: Penetrating heating, fast heating speed; its penetration distance, microwave heating makes the heated object itself become a heating object, which is called the overall heating method, which does not require heat conduction process, so it can be heated in a short time. When microwave heating, regardless of the shape of the object, each part of the object can usually penetrate the electromagnetic wave uniformly, causing the water molecules inside the object to collide and squeeze each other to generate heat, so that the water inside the object evaporates quickly to achieve the effect of quick drying. B: Uniform heating: During microwave heating, regardless of the shape of the object, each part of the object can usually penetrate the microwave uniformly to generate heat. Therefore, the uniformity is greatly improved, which can avoid the phenomenon of external coke ingrown, external dry and internal wet, and improve product quality. C. Air cooling system |
