What is the difference between a high-pressure fan and a low-pressure fan and a medium-pressure fan
According to the different pressure generated, fans can be divided into three types: low-pressure fan, medium-pressure fan and high-pressure fan , their working principle is the same, they all generate energy through the rotation of the internal impeller, but there are certain differences in other aspects:
1. Different wind pressure
The wind pressure of the high pressure fan is 30kPa~200KPa, the wind pressure of the medium pressure fan is 2kpa~10kpa, and the fan with the wind pressure lower than 2kpa is the low pressure fan.
2. Different working methods
When the high-pressure fan uses the impeller to rotate, the wind vane pushes the gas forward and outward under the action of centrifugal force, thus forming a series of Spiral movement; the gas treatment process of the medium pressure fan is completed in the same radial plane, so it is also called a radial flow centrifugal fan; the axial size of the low pressure fan is large, and the pressure generated is smaller.
3. Different uses
High-pressure fans are often used in pressurized circulation, material transportation, forced ventilation and other fields, and have a wider range of applications; medium-pressure fans Mainly used for dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings; low-pressure fans are mostly used for cooling and ventilation in air conditioning equipment and household appliances.
4. Different performance parameters
Among the performance parameters of the fan, the more important ones are the gas flow, the power delivered, the efficiency and the speed of the impeller, etc. These are closely related to pressure. The pressure of the high-pressure fan is large, the flow rate is relatively small, the power is large, the efficiency is high, and the speed of the impeller is faster.
5. Structural differences
The overall size of the high-pressure fan is generally larger, especially the front pump body; the volume of the medium-pressure fan is relatively small; The fan structure is small and compact.
6. Price difference
The pressure of the fan will directly affect its performance parameters, and the high-pressure fan has a wider range of applications, so the price It will be more expensive than medium pressure fans and low pressure fans, and the cost of use is also higher.
The above are the main differences between high-pressure fans, medium-pressure fans, and low-pressure fans. When choosing, generally choose the appropriate fan type according to the field of use and the actual pressure required.
