A pressure cooker's pressure relief valve is a common safety device used in pressure cookers. Its function is to control the steam pressure inside the cooker, maintaining it within a safe range and preventing explosions due to excessive pressure.
The pressure cooker's pressure relief valve consists of a valve body, valve core, and spring. When the steam pressure inside the pressure cooker gradually rises above the set safe pressure value during use, the pressure relief valve activates.
The valve core is the core component of the pressure cooker's pressure relief valve. It adjusts the valve's opening degree through the action of the spring. When the pressure inside the pressure cooker rises to the set safe pressure value, the valve core is pressed downwards, opening the valve, releasing some steam, and reducing the pressure inside the pressure cooker.
The valve body is the outer shell of the pressure cooker's pressure relief valve, providing protection and stability. The valve body usually also has an indicator to display the internal pressure status of the pressure cooker, allowing users to understand pressure changes.
The spring is another important component of the pressure cooker's pressure relief valve; it controls the valve's opening degree by adjusting the pressure on the valve core. The tension of the spring can be adjusted to change the safe pressure value of a pressure cooker. Generally speaking, the greater the spring tension, the stronger the valve core's ability to resist steam pressure, and the smaller the safe pressure range of the pressure cooker; conversely, the less tensile the spring tension, the weaker the valve core's ability to resist steam pressure, and the larger the safe pressure range of the pressure cooker.