A while ago, the circle of friends was swept by the news of "double skin milk explosion hurts people": Ms. Long from Shaoguan, Guangdong bought a pair of double skin milk in a dessert shop, just dug a spoonful and did not put it in her mouth. It exploded on the mouth, causing Ms. Long’s face, neck, arms and other places to be burnt. In this regard, the owner of the dessert shop said that the reason for the explosion was due to improper apprenticeship. The eggs were put in the microwave oven for 3 minutes after the double skin milk, which was 1 minute longer than usual.
Improper use of microwave ovens causes "explosion" of double skin milk
Regarding this double skin milk explosion incident, experts explained that double skin milk is a solidified food. In the heating process in the microwave oven, the air increases the pressure in a short time, and the microwave converts the water molecules into free water, and the solidification type Food has a certain ability to withstand pressure. Once the external force breaks through the limit, high-pressure air and superheated water will quickly generate gas and cause explosion.
Be sure to use the microwave oven reasonably and correctly
The foods that are often eaten around are also a safety hazard, but the root cause is not only the double skin milk itself, but also the improper operation of the microwave oven. As a must-have and frequently used home appliance product, how to use it reasonably? Today, the author sorts out Summarized the "correct way to open the microwave oven", I hope you take a few minutes to understand to prevent such incidents from happening again.
â—†The working mechanism of the microwave oven
First, let's take a look at the principle of microwave heating. In simple terms: when the microwave oven is working, the magnetron converts the electrical energy into microwave energy. When it emits microwaves at a certain frequency, the water molecules inside the food chamber are also specified. The frequency oscillates, and the molecules collide with each other and rub to generate a large amount of heat energy, which causes the food to be heated as a whole.
Diagram of the working principle of microwave oven
The microwave emitted by the microwave oven is an electromagnetic wave having a frequency of 300 MHz to 300 GHz, which has a short wavelength and has the property of visible light and propagates along a straight line. When the microwave encounters the metal material, it is reflected; when it encounters the insulating material such as glass, plastic or ceramic, it can penetrate; when it encounters the medium containing protein or fat containing water, it can be absorbed.
Microwave encounters media containing moisture that can be absorbed
In 1945, the American radar engineer Spencer discovered that the microwave actually melted the candy in an accidental opportunity; in 1947, the first commercial microwave oven came out; more than 20 years ago, the microwave oven entered the domestic market as an "imported product", when the microwave oven was a foreign brand. Monopoly, the price is also relatively high. Up to now, microwave ovens have become home-made home appliances, which are used to heat meals and cook food, bringing a lot of convenience to life.
â—†The correct way to open the microwave oven
How to use it reasonably? First of all, make it clear that not all foods can be heated in a microwave oven, so be sure to pay attention. Such as shelled eggs, sealed foods such as boxed milk, and a variety of fruits, these are not suitable for heating in a microwave oven, which is prone to explosion accidents; microwave heating similar to "solidified trait food" Don't take too long a time to prevent explosions from overheating.
Not all food can be placed in a microwave oven
When the shelled egg is heated in a microwave oven, the egg yolk heats up more quickly, and the volume expands beyond the limit of the eggshell, which in turn causes an explosion. Similar to the egg, the skin sealed with the skin and the sealed packaged food, such as grapes, boxed milk, etc. It will cause a burst due to the volume expansion caused by the intense temperature rise.
Do not cover or wrap the food in the heater dish.
In fact, heating shelled eggs, fruits and milk can be done by heating in a hot water bath, which is safe and reliable. In addition, using a microwave to heat milk can also be poured into glassware, avoid directly putting the boxed milk directly. It is necessary to pay special attention to the fact that the food contained in the heater dish should not be covered or cling film (you can put several small holes in the plastic wrap). If it is heated in a closed container, the hot air generated by the food cannot be discharged, and the pressure is too high and it is easy to cause cracking. .
Be sure to note that the utensils are not suitable for microwave ovens.
The next point is that everyone knows that metal utensils can't be heated in a microwave oven. When the microwave oven is working, it will spark with the metal container and reflect the microwave, which will make the food unable to heat and damage the furnace body. In addition, heat-resistant containers such as bamboo, plastic, and lacquer, and glass products having irregularities on the surface are not suitable for use in a microwave oven. Containers containing foods should use microwave-specific ceramics and glassware as much as possible. As for whether plastic tableware can be heated in a microwave oven, there are obvious signs or special instructions on the bottom.
Do not pile up debris on the top of the microwave oven
Finally, the daily maintenance and maintenance of the microwave oven. The microwave oven is suitable for being placed in a ventilated place. There should be no magnetic substances nearby. Try to separate it from other home appliances to prevent electromagnetic interference. The heat dissipation window grille of the microwave oven body should not be covered by any objects. Do not stack debris at the top, so as to avoid the steam generated when heating the food cannot be distributed and cause damage to the machine. Do not let the microwave oven run at no load, and it is very easy to damage the inner core magnetron. The inner cavity of the microwave oven should be kept clean and cleaned regularly. Wipe the inner cavity with a damp cloth and a neutral detergent.
Proper and reasonable use of the microwave oven will bring convenience to life.
Written at the end
Although the use of microwave ovens is a lot of taboos, it is not as terrible as imagined. As long as the correct method is used properly, there is no safety problem at all. In fact, not only microwave ovens, modern home life has long been inseparable from various home appliances. However, it is necessary to follow the instructions correctly and reasonably, so that it will bring more comfort and convenience to life.
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