How to use the pressure limiting valve of pressure cooker, and what are the precautions when using pressure cooker?

In daily life, many people don't use pressure cookers, because there is a misunderstanding that pressure cookers only have pressure when they are on fire all the time, so they can cook. This is why there is so much publicity about the explosion of pressure cooker on the Internet.

Under normal use, the pressure cooker will not explode;

First of all, you must be able to use the pressure limiting valve. There are two kinds of pressure limiting valves. One is adjustable and is often used in electric pressure cookers. One is the non-adjustable pressure cooker for ordinary gas. Which is what we often call the exhaust valve. When the pressure in the pressure cooker reaches its designed pressure limit, the pressure limiting valve will exhaust under pressure to ensure that the pressure in the cooker will not exceed the designed range. Then, when in use, the fire is first turned on and pressurized, and then the fire is turned off to maintain the status quo under the condition that the exhaust valve continuously exhausts. But many people don't understand the constant fire, so the pressure in the pot keeps rising. When the exhaust speed of the exhaust nozzle can't reach the safe pressure in the pot, the pressure cooker will explode.

Secondly, the explosion of the pressure cooker is not an easy task, because the design of the pressure cooker is a patent of our country, that is, the frame design. There are long holes around the cover. When the pressure in the pot is too high, and the exhaust valve and the safety valve can't completely release the pressure, the sealing ring will burst open from this long hole, instantly releasing the pressure in the pot and ensuring the safety of users. Therefore, attention should be paid to the aging degree of the sealing ring in use and it should be replaced in time. The cover should not collide and deform to avoid potential safety hazards.

Thirdly, when designing the pressure cooker, there is also a safety function, which is the safety valve. Early safety valves were blown, and now new pots are spring-loaded. When the pressure in the pot exceeds the safety limit, the safety valve will be forced to exhaust by air pressure to protect the safety of users. Therefore, in daily use, we must pay attention to whether the safety valve is blocked or damaged.

Fourth, the small hole in front of the handle, many people do not understand its purpose, it is a floating valve, and some people call it a check valve. Its function is to remind users that the pot is also pressurized, so as to prevent potential safety hazards caused by incorrect opening of the lid after the pot is pressurized.

note:

Another pressure limiting valve is used for electric pressure cookers, which generally has three gears to adjust the pressure in the cooker. For example, the first gear presses some perishable food-ribs, the second gear presses some non-perishable food burdock, and the third gear presses some non-perishable food ribs.