In order to drink water at any time, especially for those who like to drink hot water, it is most convenient to carry a thermos with you. A high-quality thermos not only has a long service life , it can also be used in different environmental conditions, and it can also provide better protection for human health and safety. Therefore, it is very important to choose an easy-to-use thermos cup. It must be obtained through regular channels. The thermos cups used by the landlord are usually purchased from Klip Mall. Here, the direct supply from the manufacturer is ensured. The landlord has always been at ease. So how much do you know about the common sense of vacuum flasks?
What is the working principle of vacuum flask?
Its wall is composed of double layers, and the middle is a vacuum (vacuum does not conduct heat), that is, the hot water is isolated from the outside by vacuum to achieve the purpose of heat preservation.
What are the characteristics of vacuum flask?
Elegant shape, comfortable hand feeling, strong and durable, easy to use, no matter the high temperature or low temperature, does not generate any harmful substances to the body. Refined by advanced vacuuming technology, the liner is seamless, has good sealing performance, and has good thermal insulation performance.
How long can insulation cups generally keep?
Different insulation cups have different insulation times. A good insulation cup can keep it for about 12 hours, and a poor insulation cup can only keep it for 1-2 hours. In fact, the general insulation cup can be kept for about 4-6 hours, and when buying the insulation cup, there will be an introduction to explain how long the insulation is. The thermal insulation effect of the thermos will gradually deteriorate over time. Vacuuming does not reach an absolute vacuum, so a getter will be added to the cup to absorb the remaining air, and the getter will have a "shelf life", and the insulation effect will deteriorate after the warranty.
Can the thermos be kept cold?
Thermos can keep cold. Insulation cups are generally water-contained containers made of ceramic or stainless steel with a vacuum layer, which can maintain the water temperature unchanged. Therefore, the thermos cup can both keep warm and keep cold.
What is not recommended for the thermos?
1. Milk
Milk is rich in nutrients and is the best and most convenient drink to supplement nutrition. Some people put milk in a thermos and can drink it at any time. However, both milk and dairy products contain acidic substances, which will chemically react with the stainless steel, causing the milk to deteriorate and taste, and the thermos is usually not able to be sterilized thoroughly, and it is easy to breed microorganisms, resulting in spoilage and deterioration. Drinking can easily cause diarrhea and abdominal pain.
2. Juice with high acidity
Stainless steel is most afraid of strong acids, and if it is filled with a strong acidic beverage for a long time, it is prone to damage due to chemical changes. And the vitamins of the juice will be destroyed under high temperature. Because the juice is high in sweetness and rich in carbohydrates, it is also likely to cause a large number of microorganisms and bacteria to grow and deteriorate, which will have an adverse effect on human health.
3. Tea
It is indeed convenient to make tea with a thermos cup. You can drink hot tea at any time, but as the brewing time lengthens, the tannic acid component is gradually released, which affects its flavor. Theophylline is leached in large quantities, making the tea juice free Scent, bitterness of tea, increase of harmful substances.
4. Chinese medicine
The acidic substances in traditional Chinese medicine will also react with the chemical substances contained in the inner wall of the thermos to produce harmful substances that damage the body and dissolve into the soup medicine, which will have an adverse effect on the human body.
Ok, the above is some common sense about the vacuum flask, I hope to help you!
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