If the fire is used for hot meals, it usually takes 2-3 minutes for a bowl of rice to turn over. If it is a medium fire, a lunch box can be fully heated in about 5 minutes. Generally, vegetarian dishes are heated for 2-3 minutes with medium fire or large fire, and meat for about 3 minutes. If it is frozen food, the heating time should be longer, 4-5 minutes.
Hot rice must be covered so that it is soft and delicious when it is hot. In addition, when heating steamed bread, cakes and other pasta, it is best to spray some water first and heat it for 1-2 minutes to avoid dryness.
Working principle:
Microwave oven is a cooking appliance that uses food to absorb microwave energy in microwave field and heat itself. The microwave generated by the microwave generator in the microwave oven establishes a microwave electric field in the cavity of the microwave oven, and certain measures are taken to make this microwave electric field distributed as evenly as possible in the cavity of the microwave oven. Food is put into this microwave electric field, and the cooking time and microwave electric field intensity are controlled by the control center to carry out various cooking processes.
Generally speaking, microwave is a kind of high-frequency electromagnetic wave, which does not generate heat itself. There are microwaves everywhere in the universe and nature, but there are microwaves in nature. Because they are scattered and not concentrated, it is impossible to heat food.
Microwave ovens use their internal magnetrons to convert electric energy into microwaves, which penetrate food at an oscillation frequency of 2450MHz. When microwave is absorbed by food, polar molecules in food (such as water, fat, protein, sugar, etc. ) is attracted to oscillate rapidly at a speed of 2.45 billion times per second. The macroscopic manifestation of this oscillation is that food is heated.