The parts Microwive

Microwave is an electromagnetic wave with a wavelength between 1 millimeter to 1 meter and frequency between 300 megahertz to 300 gigahertz. The oven is a kitchen equipment that is used for cooking or heating food, so the microwave oven is a kitchen equipment that uses microwave radiation to cook or heat food. 

Physical Form 

Microwave ovens are now in the market is very much shape. The technology used is also increasingly diverse. In the figure below shows sebuahmicrowave oven and the constituent components of a microwave oven. Here is a picture of a microwave oven that is commonly used in households for cooking.

Microwave Oven

Components of Microwave Oven 

1 Magnetron

Sanyo Magnetron

Magnetron is a core part of the microwave oven. This component will convert electrical energy into microwave radiation. On the inside of the magnetron, electrons emitted from a central terminal called the cathode. The positive pole is called the anode surrounding the cathode electron-electron attractive. During a trip in a straight line, permanent magnets force electrons to move in a circular path. As the electrons pass through the resonance in the oven room, the electrons will produce a magnetic field waves constantly.

Skema Magnetron

2. Waveguide

Waveguide in Microwave Oven

Waveguide is a component that is designed to direct the waves. For each type of wave waveguide used is not the same. Waveguide for microwaves can be built from the conductor material. 

3 Microwave Stirrer

Microwave Stirrer

Component that resembles a propeller is used to propagate microwaves in a microwave oven. Usually combined with a component such as a disc can be played on the bottom. This combination enables high levels of doneness when cooking evenly.

How it Works Microwive

Here are the workings of a microwave oven in the heat of an object:
1 alternating electric current with low potential difference and direct current with a high potential difference is converted into direct current.

2 Magnetron use this flow to generate microwaves with a frequency of 2.45 GHz.

3. Microwaves are directed by an antenna on the top of the magnetron into a waveguide.

4. microwave waveguide forward to a device resembling a fan, called a stirrer. Stirrer propagate microwaves inside the oven cavity.

5. micro wave is then reflected by the walls of the oven and are absorbed by the food molecules.

6 As each wave has a positive and negative components, food molecules are urged forward and backward for 2 times the speed of microwave frequencies, namely 4.9 million times in every second.

Was the result of microwave radiation can be transmitted, reflected or absorbed depends on the materials that interact with it. 3 microvawe oven utilizing the properties of microwaves in the cooking process. Microwaves generated by the magnetron, the wave is transmitted into the waveguide, the wave is reflected into the stirrer fan and the walls of the room in the oven, and then the wave is absorbed by the food. Microwave ovens can make the water spin, rotation of water molecules leads to a collision between molecules. Collision between molecules is what will make the molecules heat up. Keep in mind that most of the food has a moisture content in it and if the food has a moisture content means that the same effect would occur if the food is included in the microwave oven. In addition it should be remembered also that molecules other foods will be hot because there is direct contact between the molecules with water molecules to heat up.

Through energy transfer, the heat caused by the movement of molecules. This energy transfer can occur by three different ways, namely:
1 Conduction
Occurs due to the direct contact with the heat source, sample boards that get hot pengorengan after contact with the source of the fire on the stove.

2 Convection
Convection occurs when heat rises or vapor steam rotates inside a closed room like an oven. The hot steam will heat up the outside of the food and passed on to the inside of the food.

3 Radiation
Is due to the electromagnetic waves that make the water molecules move.

Type of Microwave Oven

Market there are several types of microwave ovens, microwave oven division types are based on the size of the microwave. Classification can be mentioned as follows:
1 Compact Microwave
Compact microwave is also called as portable microwave, which is the smallest type of microwave oven. The size of this type of oven for about 46 cm wide, 35 cm thick and 30 cm in height. Energy used to operate the oven of this kind between 500 to 1000 watts. Price of this type of microwave oven is less than $ 100 US.

2 Medium Capacity Microwave
This type of microwave empunyai compact size larger than the microwave. For the electric power required to operate the oven of this kind about 1000-1500 watts. This type of microwave has the ability to cook and heat food more quickly than with a compact microwave.

3 Large Capacity Microwave
This type of oven is the largest type with a size larger than medium microwave. Electric power required to operate the oven of this kind reach 2000 watts. Large microwave suitable for restaurants or places that require large amounts of food.

Usage Impact Microwave Oven
1 Positive Impact
- Quick heat of the heated food.
- Heating can evenly on all parts of the food are heated.
- Practical in use so that it can minimize the time.

2 Negative Impact
- Requires energy (electricity) that is large enough to operate the microwave oven.
- Potential risk if it does not understand how to use them.

HOW TO USE THE MICROWAVE OVEN

The microwave oven is one kitchen appliance that is designed with high technology and modern, this tool uses electricity as its resources in order to turn electronic circuits that produce a small wave that is capable of heating an area in the microwave.

This tool became one of the option as a means of cooking by some upper middle families who want a very practical way to cook and clean, just enter the food into the oven and set the time and then just wait for a while then Meals are cooked. some of the benefits obtained by using a microwave oven are:

We can adjust the desired temperature for cooking by setting the temperature control button.
The heat can be evenly distributed to all parts of groceries.
There is a timer to turn off the microwave according to the setting that we want on the "timer".
By knowing the expected advantages of this tool we can use it to the maximum, for more details on how to use a microwave oven, please read the description below:
Microwaves are electronic devices that require considerable electrical power of between 600W to 700W, therefore make sure the electrical power in the home can meet the electricity needs for the use of microwaves and other electronic equipment.
Do not turn on the oven (pressing the start button) when not in use for cooking foodstuffs because if that is done then the wave Microwave will soar and crash into the interior wall of the oven which could cause a fire.
Set the timer button automatically according to the type of food that is cooked or as directed by the recipe. By adjusting the automatic button (timer), the oven will turn off automatically according to the time that we set.
The use of containers made of metal as a food ingredient to put in the oven is not recommended because it can generate sparks in the oven which resulted in the burning of the oven, use a material made from wood, glass, and plastic, in addition to preventing the spark turns materials -material is more heat resistant.
When put into an oven dish sealed the evaporation oven indoors to be minimal, therefore subtract the water content of food ingredients or recipe as directed, generally the water content is 3/4 of the size of the amount of water that is used when we are cooking with tool besides the microwave.
When you cook foods that take a long time in the cooking process to keep the dishes can be cooked through then change positions frequently these foods by turning (on some brands there are parts that can rotate dishes inside the oven , other than that we can churning cuisine at half the journey time to cook that food can be cooked perfectly and prevents the formation of the frozen area which will become home to bacteria when food becomes cold which can be a source of disease in our bodies.
Use aluminum foil to keep foodstuffs not be burnt like the food ingredients containing fats and sugars, because these foods quickly because once mature.
In addition to the room which makes minimal evaporation oven turns salt can also absorb water, therefore subtract the salinity at any microwafe oven cooked dishes, the taste of salt deficiency can diatasidengan add salt when the food has been cooked and ready to serve.
Fluid contained in some foods such as chicken liver, vegetables, and yolk can out penetrate the outer layers of the food material, then put in the oven before the holes in the food ingredients using a fork to form pores in the food ingredients which are useful for prevent the escape of fluid from inside the cooking ingredients.
Do not leave the oven when cooking food that is cooked to avoid the burnt cepqat these foods.
When cooked dishes do not have to rush to pick up materials from the food in the oven because the area in the still hot oven that can blister layer of our skin, let sit for a moment so that the room temperature is reduced in the oven, use a heat-resistant gloves when taking food from oven microwave to prevent sunburn.
Frequently clean the oven from the remnants of food stuck.
Do not use a microwave oven when the door was broken, fix broken oven door te oven repair places.

HISTORY, ORIGIN OF MICROWAVE OVEN

You would be familiar with the appliance this one, which is useful for the cook or heat food quickly. Do you know how to work / working principle and the history of this tool? for you who do not know or want to add to the knowledge please observe the following article.

The history of the discovery of the microwave oven
Microwave oven was discovered by accident by the inventor Percy Lebaron Spenser, which is a major American inventor who already has 120 patents on inventions. His invention began when he was working at a defense agency Raytheon in 1945, when he was researching the ability of a radar and passed through a radiator / Magnetron who are working all of a sudden he found chocolate that is melted in his pocket, from which he started doing research on the use of microwaves to heat food.

The first generation of the microwave oven weighs approximately 400kg which is about the size of a refrigerator, with the weight as it is not possible to be used in the household, then the use of the microwave oven when it is only for use in aircraft and ships that are useful to warm foods with more quickly.

The first company to produce a microwave oven is a Tappan Company introduced and marketed to the United States in 1952.

Microwave oven is an electronic device that uses electromagnetic waves with very high frequency SHF (super high frequency) is above 3X109Hz.

Tube that can generate electromagnetic waves has existed since 1940 by John Randall and Dr. H. A. Boot from the UK. At that time the tube is used as a component of a functioning radar searched and found traces of an object by using microwaves with a frequency of about 1010Hz.


The working principle of a microwave oven
The microwave oven is one of the useful home appliances to cook or warm food or drink, this tool works with tapped microwaves produced by a vacuum tube called Magnetron located inside the microwave oven.

Micro wave generated by the magnetron will be reflected by the inner walls of the oven are made of steel or iron metal so that the waves trapped inside the microwave oven.

Microwaves can only be reflected by metals but can penetrate non-metallic materials without heating the non-metallic materials.

When we wear microwaves heat the water then there is the microwave will make the water molecules move randomly with a very high speed, consequently there was friction between molecules generates heat, the event is similar to the incidence in the palms of our hands digesek- rub the skin over time our hands will feel the heat due to friction.

MICROWAVE OVEN TREATING TIPS

Microwaves are electronic kitchen appliance that almost every time used either for cooking or for warming food. therefore it would be easier ovenpun dirty and smelly by the scattered leftovers either in the oven or on the outer wall of the oven. It ought we care for ours Microwaves that are always kept clean and longevity that will always be ready for use at any time without experiencing any obstacles that would interfere with the time of use.

For more details, please read the article I'm about Microwaves care tips below:
Keep the cable connecting the cable to a power outlet that is not peeled off from placing heavy loads or bitten by a rat that will cause a short-circuit or touched the skin. electrical connecting cable should be unplugged from the outlet when not in use microwave oven.
Use the container for the food that is made from materials that are safe to put in the microwave oven such as: plastics, melamine, pottery, wood, and glass.
Do not use food containers made ​​of metal because it can generate sparks which will cause burning of the microwave oven.
Avoid cooking foods by using wrappers that use aluminum foil as the material can reflect micro wave so long foodstuffs become overcooked or even will not heat, so foods are not cooked evenly.
Set the heating time to match the type of food being cooked.
To warm the food do not be too long because it will suck big enough electricity.
When the material is daasar cuisine including an easy kind of mature let it cook while being away from the microwave oven to prevent food material becomes charred.
Microwaves are for cooking and warming food so it is not designed for other things such as frying, because the heat generated is not a maximum for how to cook with frying methods.
Avoid cooking liquid for more than two minutes because when the water passes through a maximum temperature consequently opening the oven door, the water inside the microwave oven squirt, just to be safe until diamkanlah first fluid and the wall temperature decreases Microwaves heat.
Keep this tool of children's reach.
To eliminate unpleasant odors inside the microwave oven is to put materials such as lemongrass, vanilla powder, and lime juice in a container and then put in the microwave oven, then turn the microwave oven at maximum power for 30 seconds, so the smell sedappun are not going to disappear replaced by the scent of earlier materials.
How to remove the dirt on the inside of the microwave oven: insert a damp cloth into the microwave oven and then turn it to the maximum for 30-40 minutes, steam regardless of the cloth will remove dirt attached to the walls of the oven, after it clean using a dry cloth.

Some ways to make cleaning fluid for the microwave:
Mix with warm water and detergent used to clean the interior and the microwave door with a soft cloth or sponge that is not eroding.
Mix 45ml of baking soda plus enough water, use a soft sponge to clean the inside, doors, and body microwave, then be wiped with a damp cloth or damp ..

Dangers of Cooking With Microwave

Microwave (microwave) electromagnetic energy that is moving in the speed of light. Magnetron in a microwave oven generates wave energy. This wave energy to change the polarity of the molecules from positive to negative. This polarity change millions of times every second in the microwave. Resonance microwaves make food molecules and polarized molecules to resonate follow elektromangnetik wave frequency millions of times every second. This friction heats the food and also causes 'structural isomers', ie, damage to the structure of food molecules.

Microwaves significantly reduces the nutritional value of food 60 to 90% of normal levels. Such as, vitamin B 12 is required for the formation of red blood cells and build the nervous system, Vitamin C, Vitamin E, and essential minerals. Flavonoid content of food is reduced to 97%. Flavonoids are anti-cancer. The content of glucoside, nitrilosides, the vegetable alkaloids are also damaged.

Heating up breast milk (breast milk) in the microwave can destroy enzymes that help digest food, absorb nutrients and protect the baby from pathogens. Infant formulas also lose some vitamins when heated using a microwave. Amino acids in infant formula will be converted to synthetic isomers that are not biologically active. Amino acids such as L-proline is converted to d-isomer, which is found to be harmful to the nervous system and kidneys.

19th edition of the Journal Franz Weber ran an article stating that cooking food using microwave has an effect on blood cancers. Research has been done on foods that have been thawed, cooked and reheated in the microwave, showed that many food molecules turn into carcinogens. Glucoside and galactoside contained in the frozen food is converted into carcinogenic substances. Alkaloids in vegetables converted into carcinogens. Amino acid found in milk and cereals are heated in the microwave also turn out to be a carcinogen. Carcinogens are substances that can trigger and cause cancer.

Russian detecting microwave disease has affected thousands of workers exposed to waves from the microwave in the 1950s scientific studies by Germany, Switzerland and Russia have proven the dangers of microwave ovens.

Compounds in plastic containers and plastic wrap to seep into the food cooked in a microwave can cause cancer. Bisphenol A is a toxic chemical found in plastic bottles can seep into the food and cause cancer, early puberty, obesity and diabetes.

Microwave radiation can lower the immune system of humans and eat food cooked by a microwave on a regular basis can cause memory loss, emotional problems and decreased IQ. The food is cooked by microwaves can also cause a decrease in hormone production. The use of microwave ovens have been banned in Russia in 1976 Rather than using the microwave, you can use a conventional oven to warm and cook food.