How is the suction power of a wet and dry vacuum measured?

In the field of household, industrial and commercial cleaning, wet and dry vacuum cleaners are popular for their versatility and high performance. This type of vacuum cleaner can not only handle daily dry cleaning tasks such as dust, debris and hair, but also easily suck up liquids, mud and other wet materials, greatly expanding its application range. However, it is crucial for users to understand how to measure the suction power of a wet and dry vacuum cleaner because it is directly related to the cleaning effect and efficiency. This article will take a deep look at the measurement criteria of the suction power of wet and dry vacuum cleaners and the factors that affect it.
1. The basic concept of suction power
Suction power, in simple terms, is the ability of a vacuum cleaner to suck the surrounding dust, debris or liquid into the dust bucket or water tank through the negative pressure generated by the internal mechanism. This ability is particularly critical in wet and dry vacuum cleaners because it needs to deal with the cleaning challenges of both solids and liquids at the same time.
2. Main indicators for measuring suction power
Air flow (CFM/L/min)
Air flow is an indicator for measuring the volume of air that passes through the nozzle of a vacuum cleaner per unit time, usually in cubic feet per minute (CFM) or liters per minute (L/min). Higher air flow means more air is sucked in, which may increase the suction effect, especially when dealing with large or heavy debris. However, it should be noted that too high air flow may cause the filter system to overload, affecting the stability and durability of suction.
Water lift capacity (Water Lift)
Water lift capacity is a measure of the vacuum cleaner's ability to lift the water column height under specific conditions, usually in inches (in) or millimeters (mm). This indicator is particularly important for evaluating the performance of wet and dry vacuum cleaners when handling liquids. Higher water lift capacity means stronger suction and can more effectively remove liquids and mud.
Vacuum degree (Inches of Mercury, Hg or kPa)
Vacuum degree is another important indicator for measuring the suction power of a vacuum cleaner. It indicates the degree of negative pressure inside the vacuum cleaner relative to the external environment. The higher the vacuum level, the greater the pressure difference between the inside and outside of the vacuum cleaner, and the stronger the suction. This indicator is particularly important for handling fine particles and deep cleaning.
3. Factors affecting suction
Motor performance
The power and efficiency of the motor directly affect the suction of the vacuum cleaner. High-performance motors can generate stronger negative pressure and improve suction.
Filter system
The design and quality of the filter system will also affect the suction. A high-quality filter system can reduce airflow resistance and maintain a stable air flow, thereby improving suction efficiency.
Sealing
The sealing of the vacuum cleaner is crucial to maintaining negative pressure and suction. Any leakage will reduce the internal negative pressure and weaken the suction effect.
Nozzle design
The design of the nozzle will also affect the suction distribution and cleaning effect. The right nozzle can more effectively guide air and dirt into the vacuum cleaner.