Pneumatic Chair Height-Adjustable Office Chair
The pneumatic chair height-adjustable office chair achieves height adjustment through the movement of the piston rod inside the cylinder. There is an explosion risk, but the probability is low for genuine products. The key lies in the quality of the pneumatic rod, which can be selected by checking the markings, appearance, and sound. When using it, be cautious to avoid dangerous operations and replace it regularly.
Working Principle of the Pneumatic Chair Height-Adjustable Office Chair
The pneumatic chair height-adjustable office chair is a type of chair that adjusts the seat height through the movement of the piston rod inside the cylinder. The cylinder is usually filled with inert gases such as high-purity nitrogen. When the chair is raised or lowered, the gas pressure inside the cylinder changes, pushing the piston rod to move and thus adjusting the seat height. This design allows the chair to be flexibly adjusted according to the user's needs and is commonly found in offices, homes, and barber shops.
Explosion Risk and Causes
If a low-quality pneumatic rod is used or the gas purity is insufficient, the pressure inside the pneumatic rod may suddenly increase under frequent lifting, high temperatures, etc., posing an explosion risk and having caused multiple serious injury accidents. The explosion probability of qualified pneumatic chair height-adjustable office chairs produced by legitimate manufacturers is very low, but low-quality products may turn into "flying chairs". The key lies in the quality of the pneumatic rod, which should be filled with nitrogen with a purity of over 90%. The addition of oxygen or the use of low-quality materials can easily trigger an explosion.
Purchase Considerations
To avoid danger, when purchasing a pneumatic chair height-adjustable office chair, first check if there is an EN16955 steel stamp on the chair legs, which is an important mark indicating that the product meets relevant safety standards. Touch the surface of the pneumatic rod for any cracks, which may indicate quality issues and a risk of breakage. Shake it to listen for any air leakage sounds. If there is an air leakage sound, it indicates poor sealing of the cylinder, and gas may leak, affecting safety.
Usage Considerations
Avoid frequent height adjustments during use. Frequent operations may cause frequent changes in the pressure inside the pneumatic rod, increasing the explosion risk. Do not use it violently, as violent operations may damage the internal structure of the pneumatic rod. If the chair makes abnormal noises or has been used for more than five or six years, it is recommended to replace it. Abnormal noises may be a signal of internal faults in the pneumatic rod, and prolonged use may degrade the performance of the pneumatic rod and increase safety risks. In addition, some pneumatic chairs on the market use safer materials such as carbon steel, which can reduce the risk of explosion.
