The heat preservation effect of stainless steel heat preservation pot is quite good. Under normal circumstances, it can keep warm for about six or seven hours, but it is another matter to fall and impact.
1、 How long can the stainless steel insulation barrel keep warm
Stainless steel insulation barrel is a common insulation appliance. The inner tank is made of 304 stainless steel plate. It is a solid and durable insulation product. The holding time of stainless steel insulation barrel mainly depends on its quality, the temperature when the goods are put in and the ambient temperature. Generally speaking, a normal stainless steel insulation barrel can hold heat for about 6 or 7 hours.
2、 What is the reason why the stainless steel thermos pot is not insulated
Many people buy stainless steel thermos pots for convenience. Although the price of stainless steel thermos pots is relatively expensive, they generally have a long service life. However, some people have found that their own stainless steel thermos pots have greatly reduced the heat preservation effect after using them for a period of time, or they don't heat preservation at all. What's the reason?
1. Falling or being impacted, the stainless steel insulation pot is impacted or falling from a high altitude, which is likely to lead to rupture between the shell and the vacuum layer. The air enters the interlayer and forms convection in the interlayer, so the insulation pot naturally loses its insulation effect. The picture is provided by the registered user "Jinghu drinker", and the copyright notice feedback
2. If the insulation pot is not well sealed, it usually has a cover on the top, which can play a good role in heat preservation when it is tightly sealed. However, if the lid is not tightly covered, the sealing cushion falls off, or there is a gap in other places, the insulation pot will also lose its heat preservation function.
3. If there is air leakage in the insulation pot, if there is a problem with the material of the insulation pot or there is a defect in the production process, a hole with the size of a pinhole on the inner tank will accelerate the heat transfer of the vacuum layer, resulting in the rapid loss of heat.
4. It is not a real Thermos Pot. Some illegal vendors are likely to shoddy thermos pots with sand in the interlayer, or products that are not thermos pots at all are sold to consumers. When they go back, they find that there is no heat preservation effect.
3、 What if the stainless steel thermos doesn't keep warm
In terms of current technology, the loss of heat preservation effect of stainless steel thermos is generally due to the lack of vacuum in the vacuum layer. If it needs to be repaired, the thermos needs to be sent back to the manufacturer to let the manufacturer draw out the air again. However, in fact, the cost of this method is higher than that of buying a new thermos, so generally, the thermos is not repaired, If it breaks down, it can only be used as an ordinary kettle.
In addition, it should be noted that the thermal insulation effect and service life of the thermal insulation pot depend on whether the user can use and protect it normally. During normal use, collision and impact should be avoided to avoid damage to the pot body or vacuum layer and affect the use.
How to choose a thermos cup
The quality of thermos cups in the market is mixed. It is suggested that we should focus on the thermal insulation performance of the inner structure, the sealing degree between the cup cover and the bottle body, and whether the material releases harmful substances, which can be identified through four methods.
This is the main technical index of the thermos cup. After filling with boiling water, tighten the cork or cap clockwise, and touch the outer surface and lower part of the cup body by hand after 2 ~ 3 minutes. If there is obvious warming phenomenon on the cup body and upper part of the cup body, it indicates that the inner tank has lost vacuum and can not achieve good heat preservation effect.
Fill a glass of water, turn it upside down for four or five minutes, tighten the cover, place the cup flat on the table, or throw it several times. If there is no leakage, it indicates that the sealing performance is good; In addition, check whether the rotation of the cup cover and the cup mouth is flexible and whether there is a gap.
The environmental protection of plastic accessories is also a matter of concern, which can be identified by smell. If the cup is made of food grade plastic, it has small smell, bright surface, no burr, long service life and is not easy to aging; Ordinary plastics or recycled plastics have strong smell, gray color, many burrs, and plastics are easy to age and break.
There are many specifications of stainless steel materials, among which 18 / 8 means that the composition of this stainless steel material contains 18% chromium and 8% nickel. The material meeting this standard meets the national food grade standard. It is a green environmental protection product with rust prevention and corrosion resistance. If the cup body is made of ordinary stainless steel cup, its color is white and dark. If it is soaked in 1% salt water for 24 hours, it will produce rust spots. It is said that some elements contained in it exceed the standard, which will directly endanger human health.
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