Some Information You Should Know about High Pressure Cooker
July 27,2022
The fast cooking speed of the pressure cooker meets people's need for high efficiency, so more and more people like to buy and use a pressure cooker. Today we will introduce it to you from all aspects!
How does a pressure cooker work?
The working principle of the pressure cooker is to use non-boiling cooking, using the physical property that the boiling point of water is affected by air pressure, usually boil water at 1 atmospheric pressure, the water will boil at about 90-105 ℃, and the pressure in the pressure cooker is generally 1.5 atmospheres, the boiling point of water is generally around 110-130 ℃. In this way, a high temperature and high pressure environment will be formed inside the pressure cooker, and the rice will be cooked quickly. However, the pressure cooker has limitations, and it is easy to explode beyond this standard.
The pressure cooker is composed of a lid and a body, but there are also other items such as fusible sheets, safety valves, sealing rubber rings, air vents, etc., not only to make the pressure cooker form a closed environment, but also to make a lot of safety measures to make the pressure cooker When the explosion accident occurs, for example, the safety valve and the fusible sheet are related to each other. Once the safety valve fails, the fusible sheet can play the role of deflation, so that the accident can be reduced.
Pros and cons of pressure cookers
- Conducive to the preservation of antioxidant components. Pressure cooker cooking protects food from too much oxygen, which is great for preserving valuable antioxidants in whole grains, such as polyphenols.
- Cooking certain ingredients can help digestion. When using a pressure cooker to cook relatively hard health-care ingredients such as yam, Gorgon, lotus seeds, barley, and red bean, the digestion of these ingredients is significantly accelerated after 20 minutes of high pressure. Therefore, for people with indigestion, the elderly, children and other people with weak stomachs, cooking in a pressure cooker can help digestion and reduce the burden on the stomach. Therefore, whether it is porridge or soup, the pressure cooker is a healthy choice.
- There is a potential safety hazard of explosion. As long as it is a pressure cooker, it has a certain service life. If the pressure cooker is used for too long, there may be a hidden danger of explosion.
- Poor heat transfer. The stainless steel liner of the pressure cooker does not have a non-stick coating, which is prone to coke.
How long does a pressure cooker last?
Generally speaking, an aluminum pressure cooker should be replaced after it has been used for 8 years. If it is an old-fashioned one, it is generally safe to use it for only five or six years. Some people think that the pressure cooker can be used all the time without breaking down.
There are many reasons why a pressure cooker explodes. The old-fashioned pressure cooker has only one vent, which is easy to block when cooking porridge. Once blocked, the pressure cannot be released. The pressure cooker is heated on the fire, and the pressure will rise if the pressure is not released, and there is a danger of explosion. If the pressure cooker has reached its service life at this time and the material is aging, it will be more likely to cause an explosion.
Therefore, if the outlet valve and safety valve are blocked, the exhaust is not smooth, or the service life is up, and the pot body is aging and cannot withstand too much pressure, it is prone to explosion.
Conclusion
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