Operation theory of Microwave oven
1. Microwave is a kind of high frequency electromagnetic wave, which is commonly
distributed in the nature. But the existing form of microwave is dispersed so that it
cannot be collected together for heating purpose. The key component of magnetron
of microwave oven will transform the energy of electricity to microwave and huge
energy of microwave field is established under the closed cavity. So the molecule
of food is caused to vibrate at very high speed and the friction heat produced will
cook the food in a fast way.
2. There is 3 properly of microwave, that is
a) absorbability, the microwave can cause the excess vibration of molecule of
various food so as to obtain the heating purpose. But the infiltration ability is
largely depend on the size, thickness and properties of the food.
b) penetrability, microwave can penetrate through ceramics, glass, temperature-
resistant plastics. It is required to use the containers whose material have good
microwave penetrability to achieve best heating result. See the below utensils
guide.
c) reflectivity, microwave would be reflected by the metal wall of interior cavity so
as to establish an even magnetic field, thus can prevent the overheating of partial
area.
Installation of Microwave Oven
1) To ensure sufficient ventilation, the distance of back of oven to the wall or cabinet
should be at least 10 cm, side of oven to the wall or cabinet should be at least 5 cm,
the top of oven to the ceiling or cabinet should be at least 20 cm.
2) Do not place any object on the top of oven.
3) The position of the oven shall be such that it is far from the TV, Radio or antenna
as picture disturbance or noise may occur.
3) The oven shall be so installed that the plug is accessible.
Utensils guide
Material of con-
tainer
Grill notes
Ceramic Yes No No Never use the ceramics which are decorated
with metal rim or glazed .
Plastic Yes No No Can not be used for long time microwave cook-
ing.
Grill rack No Yes Yes
Plastic film Yes
No No It should not be used when cooking meat or
chops as the oven temperature may do damage
to the film
Know your microwave oven
Rated Voltage: 230V 50Hz
Rated Power input: 1000W for microwave
1300W for convection
1100W for heat element
Rated Microwave power output: 1000W
Capacity of oven cavity: 31L
