How to design a thermostat to keep the heat so long?

A thermos bottle is a common household tool. So how does the structure of the thermocouple make it retain such great heat?

Born in 1892, up to now, the thermos bottle has been improved and put on more quality and modern coats, meeting more than the needs of consumers, becoming a companion. Familiar by many people, including the most demanding consumers. So how does the structure of the thermocouple make it retain such great heat? Let's learn more about quantrimang!

How to design a thermostat to keep the heat so long? Picture 1

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  1. Discover the structure of a thermos bottle
  2. Principle of operation of the thermos bottle
  3. Tips for using a safe, durable thermos bottle

Discover the structure of a thermos bottle

A thermos flask, also known as a vacuum bottle (vacuum-only thermos) or bisexual ones (refers to a type that keeps both warm and cold). Science also calls this pot super insulated. What makes the bottle retain its heat for a long time is its structure. So what is the composition of the thermos bottle?

How to design a thermostat to keep the heat so long? Picture 2

In general, a thermos bottle is generally made up of two parts, the body and the lid.

1. Part of bottle cap

The lid covers part of the role to keep heat and keep the bottle cool. Normal lids are made of high quality plastic or primary plastic. In addition, it often has silicon gaskets that help keep the vapor tightly, tightly closed to the body of the bottle and do not leak steam out.

2. Average body

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The body of the thermos bottle is composed of 3 layers:

  1. Outer stainless steel layer: made of high quality stainless steel, durable, resistant to deformation, rust
  2. Middle layer: A vacuum environment, without heat transfer or insulation.
  3. Inner layer: 304 stainless steel coated with silver to prevent sticking and reflect heat inside.

Characteristics of 304 stainless steel:

  1. Good anti-rust ability
  2. Can be laminated without heating, shaping easily.
  3. Resistant to contact when exposed to many different chemicals.
  4. Is the main ingredient making most of kitchen appliances, pots and pans today.

Principle of operation of the thermos bottle

To keep the temperature that long, the thermos bottle is based on a fairly simple but very special operating principle. The bottle is manufactured on the principle of airtight, because in a vacuum environment, it is not possible to transfer heat and the coating on the inside of the jar has a reflective effect on the inside, making the water inside keep the temperature long.

How to design a thermostat to keep the heat so long? Picture 4

To make it easier to understand, through the extremely simple structure of the thermos bottle, the jar will prevent all forms of heat exchange (including heat conduction, convection and heat radiation). The vacuum environment between the vessel shell and the bowel of the jar will prevent heat conduction. In addition, a stopper helps prevent air entering or leaving the vessel, so convection does not occur. And when the infrared rays leave the hot liquid, the silver coating on the reflective glass will return. There is almost no way for heat to escape from the kettle, and hot water can keep the temperature for hours.

Tips for using a safe, durable thermos bottle

Should choose to buy and use the type of thermos safe

Besides the purpose is to keep the beverage warm, when using a thermos bottle, never overlook the safety factor of that bottle. One of them is the material that makes the heart. Because this is the direct contact with hot or cold water. If it has an unsatisfactory quality, there may be some cases such as: Reducing the quality of water, water contaminated with impurities due to being emptied from the vessel, water with a new plastic smell . In addition, it should also choose a thermos bottle with a firm and tight lid, made from virgin plastic material, safe for users.

Do not put thermos into the microwave oven

This is a work that is strictly prohibited. As you probably know, most thermos are made of stainless steel. Meanwhile, if you put metal objects inside the microwave, it can lead to fire and explosion. So, if you want to warm up drinks and food, pour water into a ceramic or heat-resistant glass (used in a microwave) before putting the glass in the microwave!

Avoid strong impact

Although advertised as being of good strength, high impact resistance, regular impact or falling of the jar, the vacuum in the vessel will be affected, the metal layers around the space will be affected. touching and narrowing the space reduces the insulation capacity of the flask.

Clean the thermos bottle regularly

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Do not forget to clean the thermostat immediately after purchasing and often during use. Because to prevent mold and bacteria from accumulating or lasting, the jar will rust and affect your health.

In addition, when cleaning, you can use dishwashing liquid, rinse the bottle and wipe dry or let it dry naturally for a long time.

Do not change the thermocouple temperature suddenly

Changing the temperature so quickly causes your thermostat to expand suddenly and therefore, its life will be reduced. That is why you should not put thermos into the refrigerator. Instead, if you've just used hot water, wait about 10-15 minutes to use it with cold water.

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Foods should only be stored at moderate temperatures

Leaving a drink in the kettle too hot or too cold will cause inconvenience to use because you will have to wait longer to use it, even, it is also easy to cause burns when pouring drinks directly from the jar out.

Above are the structural features that make up the bottle and keep in mind when using the bottle. Hope it will help you to experience using this bottle effectively and safely.

See also :

  1. What kind of thermos can keep the heat for the longest?
  2. Deodorizing extremely simple thermos keep in 10 ways
  3. Indication of immediate need to replace the thermos bottle
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