What Types of Pressure Cookers Are There
July 27,2022
The pressure cooker is an electrical appliance with a relatively high usage rate in daily life. Now more and more people choose the electric pressure cooker. It is not only easy to use, but also very safe and energy-saving. It is an essential kitchen utensil in modern families. So, what types of pressure cookers are there?
What are the types of pressure cookers?
According to the closed form:
It can be divided into rotary pressure cooker, cover pressure cooker, drop cover pressure cooker, clamp pressure cooker, etc. In China, the rotary pressure cooker is the most common application, followed by the cover pressure cooker. The rotary pressure cooker is composed of a body, a lid, a sealing rubber ring, a handle, a pressure limiting valve, a safety valve, an opening and closing lid device, a pressure relief device, and an anti-blocking device.
According to the material of the pot body:
It can be divided into an aluminum pressure cooker and stainless steel pressure cooker. The aluminum pressure cooker is made of pure aluminum or aluminum alloy sheet. Aluminum pressure cookers can be divided into polished pressure cookers and oxidized pressure cookers according to surface treatment methods. Oxidation pressure cooker can be divided into oxalic acid oxidation, sulfuric acid oxidation, porcelain oxidation, hard oxidation pressure cooker and so on. The surface layer of the hard anodized pressure cooker is thick and hard, and has good wear resistance. Stainless steel pressure cooker is formed by processing stainless steel plate.
According to the bottom structure of the pot:
It is divided into non-double bottom pressure cookers, single double bottom pressure cookers and double-double bottom pressure cookers, and the double double bottom stainless steel pressure cooker has the best performance. According to the maximum nominal working pressure: the common pressure cookers are 100 kPa, 90 kPa and 80 kPa. 100 kPa pressure cooker is especially suitable for high altitude areas.
According to the inner diameter of the pot mouth:
Common pressure cookers are 18 cm, 20 cm, 22 cm, 24 cm, 26 cm, and 28 cm. According to the volume of the pot body: common pressure cookers are 3 liters, 4 liters, 5 liters, 7 liters, and 9 liters.
Which is better, aluminum alloy pressure cooker or stainless steel?
Ordinary pressure cookers are aluminum cookers (including aluminum alloys), but stainless steel pressure cookers are also sold in the market, but the price is higher. People usually refer to the ordinary aluminum pressure cooker. The aluminum pressure cooker can hold non-acidic, non-alkaline and non-salty foods such as rice for a long time (but not recommended). However, the resistance to acid, alkali and salt is not very good, because the layer on the surface is aluminum oxide, which has a chemical reaction with the acid, alkali and salt substances in the food, and most food is acidic and salty. , so, usually do not hold food for a long time.
Stainless steel pressure cookers are heavier and brighter than aluminum ones, and are also more resistant to acid, alkali and salt. However, stainless steel is good or bad. Type 340 has poor acid and alkali resistance, type 304 is in the middle, and types 316 and 316L are very resistant. Acid-base salts. Therefore, if you know that you are buying a stainless steel pressure cooker made of 316L, it can hold any food for a long time, but if you are not sure about the stainless steel model, Xianmama recommends that it is better to shorten the time as much as possible! The purpose of the pressure cooker is to cook at high pressure, it can make food more quickly cooked and perishable. Food containers are ceramic products! The environment for storing food is cool and ventilated.
Conclusion
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