Description Of The Functions; How The Microwave Oven Works - Miele TX2070 Operating Instructions Manual

Description of the functions

How the microwave oven
works
In a microwave oven there is a high-
frequency tube called a magnetron.
This converts electrical energy into
microwaves. These microwaves are
distributed evenly throughout the oven
interior, and rebound off the metal
sides of the oven interior to reach the
food from all sides. Microwave
distribution is improved with the
turntable engaged.
In order for microwaves to reach the
food, they must be able to penetrate
the cooking container being used.
Microwaves can penetrate porcelain,
glass, cardboard and plastics, but not
metal. Do not, therefore, use dishes
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
absorbed.
Microwaves pass through a suitable
container and find their way directly into
the food. All food contains moisture
molecules which, when subjected to
microwave energy, start to oscillate
approx. 2.5 billion times a second. The
friction caused by this vibration creates
heat, which first starts developing
around the outside of the food and then
slowly penetrates towards the centre.
The moisture content of food will affect
the speed at which it is cooked. The
more moisture a food contains, the
faster it will cook.
Heat is produced directly in the food.
This results in the following benefits:
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– Food can generally be cooked
without adding much liquid or
cooking oil.
– Cooking, reheating and defrosting in
a microwave oven is quicker than
using conventional methods.
– Nutrients, such as vitamins and
minerals, are generally retained.
– The colour, texture and taste of food
are not significantly impaired.
Microwaves stop being produced as
soon as the cooking process is
interrupted or the appliance door is
opened.
When the appliance is in operation, the
closed, sealed door prevents
microwaves escaping from the
appliance.