The Working Principle of a Backpack Vacuum Cleaner

A backpack vacuum cleaner is a portable cleaning tool. Its working principle is mainly based on aerodynamics and motor-driven mechanisms.

When the vacuum cleaner is turned on, the built-in motor begins to operate, driving the fan to rotate at high speed. The fan's rotation creates a strong negative pressure inside the vacuum cleaner, forming a low-pressure zone. Due to atmospheric pressure, external air, along with dust and debris, is drawn into the vacuum cleaner through the suction nozzle.

The air and dust first enter a filtration system, which usually consists of multiple layers of filters. These filters can effectively intercept dust particles and hair. Larger particles are blocked by the initial filter layer, while finer dust is further filtered by the subsequent layers. After filtration, the air becomes relatively clean and is finally expelled through the exhaust port.

The design of the backpack vacuum cleaner makes it easy to carry and operate, and suitable for use in various settings. The motor and battery pack are typically mounted on the back, with the weight distributed by shoulder straps to reduce user fatigue. This design not only improves cleaning efficiency but also enhances flexibility and comfort during use.