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Centrifugal fan usage experience

2023-11-25

A centrifugal fan is a mechanical device that drives air flow through centrifugal force. It consists of a rotating impeller and a casing. When an electric motor or other power source drives the impeller to rotate at high speed, centrifugal force draws air into the center of the impeller and causes it to flow along the axial direction. The shape of the impeller is such that the air is forced to change direction as it rotates and is expelled from the outer edge of the impeller by centrifugal force. Centrifugal fans are commonly used in industrial, construction and air conditioning systems to remove heat, moisture, pollutants or odors from indoor air. Its advantages include simple structure, high reliability, high lift, and high efficiency. The air volume and pressure of the centrifugal fan can be adjusted according to needs, and are suitable for air flow situations of different sizes and needs. Centrifugal fans are used in a wide range of applications, including factory workshops, office buildings, shopping malls, hospitals, subway stations, etc. In industry, they are commonly used in cooling equipment, combustion furnaces, drying systems, etc. In buildings, centrifugal fans are often used in fresh air systems, exhaust systems and air conditioning systems. In short, centrifugal fans play an important role in providing people with comfortable and healthy indoor air.

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Introduce the use of mixed flow fan knowledge

2023-08-29

Mixed-flow fan is between the axial flow fan and centrifugal fan between the fan, mixed-flow fan impeller so that the air to do both centrifugal movement and axial movement, the movement of the air in the shell mixed with the axial flow and centrifugal two kinds of movement methods, so called "mixed flow". The structural characteristics of the mixed flow fan are mainly composed of impeller, casing, inlet collector, guide vane, motor and other components.

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What is the point of choosing a fan

2023-08-29

The function of the fan is a function within the high power range. It is divided into five characteristics according to the flow rate. When selected, it shall be subject to the function table. The full pressure value of the qualified product of the fan shall not exceed 5% under the rated flow rate. The function selection table is the function under the standard state. The atmospheric pressure under the standard state is 101325Pa,t = 20, and the relative temperature Ψ = 50% air state. The fan device mode can be divided into vertical or horizontal type.

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Introduce the structure type of axial flow fan

2023-08-29

The main structure type of axial flow fan: the centrifugal impeller stage of vertical centrifugal pump is centrifugal impeller, which has the obvious characteristics of low pressure and high efficiency. Generally speaking, its specific transmission ratio is 215-490. Centrifugal impeller aluminum hub is smaller than many types of centrifugal impellers. Centrifugal impeller rear scroll compressor refrigeration compressor and exhaust fan The engineer is equipped with a rear scroll compressor refrigeration compressor at the rear end of the centrifugal impeller.

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How much do you know about the characteristics of axial flow fans

2023-08-29

When the axial flow fan is started, the current of the motor will be 5-6 times higher than that of the extra, which will not only affect the service life of the motor but also consume more electricity. System in the design of the motor selection will leave a certain margin, the speed of the motor is fixed, but in the process of practical use, sometimes to a lower or higher speed operation, so the frequency conversion transformation is very necessary.

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