Microwave heating

Microwave ovens are commonly used in our daily life. They are mainly used for cooking and heating some other foods. They are a common food in cooking now. Microwave ovens are mainly used for cooking and heating some other foods. They mainly use a kind of micro-blog campus to heat food. The heated food is relatively clean and hygienic, and the instant food is very fast. So what is the main basic principle of microwave ovens?

The main principle of microwave heating is wave thermal effect and some biological effects, using microwaves to produce induction. Below we will briefly introduce how microwave ovens heat and what aspects need to be paid attention to when heating food in microwave ovens.

Two effects: 1. Wave heat effect. The electromagnetic field in the microwave oven cavity changes at a speed of up to 2.45 billion times per second (microwave frequency is 2450MHZ), which acts on polar molecules such as water molecules in food, causing them to swing back and forth 2.45 billion times per second. The high-speed pendulum friction motion between the water molecules generates high heat, thereby achieving the purpose of heating. ② Biological effect: Since the ability of microbial cell fluid to absorb microwaves is better than other surrounding media, the cells in the microwave electromagnetic field will quickly rupture and cause bacterial cell death.

Three characteristics: 1. Reflectivity. Microwaves will be reflected back when they hit metal, so the inner wall is made of specially treated steel plates. Based on the reflection effect caused by the inner wall of the microwave oven, the microwaves can penetrate the food back and forth, thereby enhancing thermal efficiency. However, metal containers must not be used in the furnace, otherwise it will affect the heating time and even cause discharge and sparks in the furnace. ② Penetration b] Microwaves can penetrate general ceramics, glass, heat-resistant plastics, wood, bamboo, etc., so they are the best utensils for microwave cooking. ③Absorption b] Various foods can absorb microwaves, causing the molecules in the food to oscillate and rub to generate heat energy. However, the degree of penetration into various foods varies depending on factors such as their quality and quantity, thickness, etc.

The above is how a microwave oven works, but the heating in a microwave oven is mainly due to the change of the electromagnetic field in the microwave oven cavity, which then produces some biological effects. The microwave oven absorbs microwaves, and then in the magnetic field, it ruptures the cells in some food, causing the death of the crystals. Microwave heating is relatively safe, reliable and hygienic. You should also pay attention to daily cleaning and heat the food according to its properties.