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Advantages of Glass Liner for Thermos Water Flask and the Identification of Quality

Advantages of Glass Liner for Thermos Water Flask and the Identification of Quality

Ⅰ. What are the benefits of using a glass liner for a thermos water flask?


The thermos is also called a thermos water flask. The inner liner of the thermos is a double-walled bottle that is evacuated as the inner liner, and an insulating container made of an outer shell is a common daily necessities.


1. In terms of price, compared with the price of hundreds of stainless steel or other materials, the price of thermos glass liner is much cheaper.


2. Environmentally friendly, hygienic and easy to clean.


3. In terms of the thermal insulation effect of the thermos, the inner liner of the small-diameter thermos has the best thermal insulation effect in various inner liner, and the cost performance is very high; that is, the reason why the thermos used in the home has always used glass liner.


4. Safety: Because the thermos is mainly used for hot water insulation in the family, it is also called a thermos. The structure of the thermos is not complicated. The middle is a double-layer glass bottle, which is evacuated between the two layers and plated with silver or aluminum. The vacuum state of the glass insulation liner can avoid heat convection. The glass itself is a poor conductor of heat, and the silver-plated glass can reflect the heat energy radiated from the inside of the container back. In turn, if the thermos is storing cold liquids, this thermos prevents heat from radiating into the bottle from the outside.


Ⅱ. How to judge the quality of the thermos water flask?


The inner liner of the thermos is composed of two glass bottles inside and outside. The stopper of a thermos is usually made of cork or plastic, which do not conduct heat easily. The outer shell of the thermos is made of bamboo, plastic, iron, aluminum, stainless steel and other materials. There is a rubber gasket at the mouth of the thermos and a bowl-shaped rubber seat at the bottom of the thermos. These are used to fix the glass bladder to prevent collision with the outer casing.


Both the bottle body and the bottle liner of the thermos water flask are important. The bottle body should be thick, the cooked rubber is relatively soft, and the cracked bile is relatively small. If the bile is accidentally burst, the raw rubber may be easily broken, which may cause the bottle liner to not hurt anyone but the bottle. The shell hurts people, and the cooked glue should not be too thin, otherwise it will be easily deformed when it is filled with water because it cannot bear the weight, and the bottom will fall off, causing unnecessary damage.


The glass insulation liner should be checked. The bottle mouth should be round, the inside of the bottle should be bright, and there is no obvious difference in brightness. is vacuum.


The two are connected at the mouth of the bottle, the gap between the two bottle walls is evacuated to weaken the heat convection, and the surface of the glass bottle wall is coated with a bright silver film to reflect infrared heat radiation. When the temperature in the thermos bottle is high, the heat energy of the contents of the glass thermos does not radiate outward; when the temperature in the bottle is low, the heat energy outside the bottle does not radiate into the bottle. The thermos effectively controls the three heat transfer pathways of conduction, heat convection and radiation.

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