It may be man-made physical reasons, or may be the aging of stainless steel thermos jug accessories. Relatively speaking, stainless steel vacuum jug has the characteristics of anti-fall, anti-leak and anti-impact, but it will still not be able to keep warm when subjected to severe physical impact.
The normal service life of stainless steel vacuum jug is 3 to 5 years. If we want to have a good heat insulation effect after 5 years, we must maintain the stainless steel vacuum jug well. If there is still no heat insulation, the accessories may be aging. The following reasons may also lead to loss of heat preservation of the vacuum flask jug.
1. Poorly sealed stainless steel vacuum jug: Check whether the cap or other places has a gap. If the cap is not covered, it will also lead to loss of heat preservation of the stainless steel vacuum jug.
2. Incorrect installation of lid leather of stainless steel vacuum jug: The leather ring inside the lid of stainless steel vacuum jug is not placed correctly after cleaning, resulting in loss of heat preservation.
3. The interlayer of stainless steel vacuum jug has sand: This is a method of producing vacuum jug flask used by some merchants in order to sell seconds at best quality prices. Such a stainless steel vacuum jug will be heat preservation when bought, but after a long time, sand and bladder may be reacted, resulting in the rust of stainless steel vacuum jug and poor thermal insulation.
4. Air leakage of stainless steel vacuum jug: The material of stainless steel vacuum jug may have problems. There are defects in the process of some stainless steel vacuum jugs. There may be pinhole-sized holes on the inner bladder, so as to accelerate the heat transfer between the two-layer walls of the stainless steel vacuum jug and the heat is quickly lost.
These reasons are common causes of the loss of heat preservation of thermos stainless steel pump pot. A simple way to judge whether stainless steel vacuum jug has heat preservation function is to pour hot water into stainless steel vacuum jug, and after 3 minutes hold the stainless steel vacuum jug. If you don't feel temperature obviously, it means that the vacuum jug flask has heat preservation function, otherwise it doesn't.
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