Miele M 616 EG How does the microwave oven function?, How does the microwave oven func- tion?

How does the microwave oven function?

In the microwave oven, food is cooked, reheated or defrosted more quickly than by any other method.

How does the microwave oven func- tion?

In a microwave oven there is a high-fre- quency tube called a magnetron b. This converts electrical energy into microwaves. These microwaves are dis- tributed evenly throughout the oven in- terior by a metal fan blade known as a stirrer c -, rebounding off the metal sides of the oven interior and thereby reaching the food from all sides. Micro- wave distribution is improved by engag- ing the turntable.

In order for microwaves to reach the food, they must be able to penetrate the cooking utensil being used. Micro- waves can penetrate porcelain, glass, cardboard and plastics but not metal. Do not, therefore, use utensils made of metal, or which contain metal, for example in the form of gold or silver trim. The metal reflects the microwaves and this could lead to the creation of sparks. The microwaves cannot be ab- sorbed.

Microwaves pass through a suitable container and find their way directly into the foodstuff. All foodstuffs contain moisture molecules which, when sub- jected to microwave energy, start to os- cillate 2.5 thousand million times a sec- ond. The friction caused by this vibration creates heat, which first starts developing around the outside of the foodstuff and then slowly penetrates to- wards the centre. The moisture, fat and sugar content of food will affect the speed at which it is cooked.

As heat is produced directly in the food,

–food can generally be cooked with- out adding much liquid or cooking oil.

–cooking, re-heating and defrosting in a microwave oven is quicker than using conventional methods.

–nutrients, such as vitamins and mine- rals, are retained.

–colour, texture and taste of food are not impaired.

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