What to do if the thermos food jar can’t be opened?

What to do if the thermos food jar can't be opened? How to avoid the situation that the thermos food jar can't be opened?

In life, many people like to use the thermos food jar. Many people have encountered the situation that the lid of the thermos food jar can not be opened. The reason why the thermos food jar can not open is because the air and water in the thermos food jar are swollen when hot water is poured into the thermos food jar. After a period of time, they cool and shrink, making a pressure difference between the inside and outside of the thermos food jar, so it can not be opened. What can I do if I can't open the thermos food jar? Let's take a look at it.

Why can't the thermos food jar open?

This is due to the expansion of heat and contraction of cold. When we pour hot water into the thermos food jar, the air and water inside are swollen. After the thermos food jar is covered, the temperature will decrease with time. However, when the temperature drops, the temperature of the residual air in the thermos food jar will also decrease, and the volume will also decrease. Thus, the suction force on the thermos food jar cover will be generated. In fact, there is a pressure difference between the inside and outside of the thermos food jar. The pressure on the outside of the brazier is greater than that on the inside. Therefore, it is difficult to open the thermos food jar under different pressures.

What to do if the thermos food jar can't be opened?

Method 1: in the absence of other tools to help, the most common is to increase the strength to open the lid of the thermos food jar. This may be a bit of a struggle.

Method 2: turn the pot upside down, slap the bottom a few times, and then try to screw off the lid.

Method 3: first put the braising pot into the refrigerator to freeze, take it out and pour hot water on the lid to open it.

Method 4: gently pry the gap between the cup cover and the cup mouth with the key or other sheet metal. After the air enters, it is easy to screw the lid off.

How to use the thermos food jar?

Take the vacuum thermos food jar as an example. First, preheat with boiling water for 2-3 minutes, put in the ingredients, then preheat with boiling water, shake for several times, then pour out the water, and finally pour in the boiling water to close the lid of the thermos food jar, and simmer for 30 minutes to 1 hour.