Multiple centrifugal fan multi-wing cooling fan for air air cooler-ERG Multi-blade centrifugal fan Fan structure The multi-blade centrifugal fan is generally composed of an impeller, a casing, a current collector, a motor and a transmission member (such as a main shaft, a pulley, a bearing, a...
Multiple centrifugal fan multi-wing cooling fan for air air cooler-ERG
Multi-blade centrifugal fan
The multi-blade centrifugal fan is generally composed of an impeller, a casing, a current collector, a motor and a transmission member (such as a main shaft, a pulley, a bearing, a V-belt, etc.). The impeller consists of a wheel, a blade (the number of blades is generally 8 to 16), a wheel cover, and a shaft disk. The casing consists of a worm plate, side plates and legs. Centrifugal fans can use blades forward or backward blades, which are more adaptable to wind pressure requirements. In addition, the cabinet can be used for noise elimination and has obvious advantages in terms of noise indicators. Motors and fans are generally connected by shafts. Multi-wing centrifugal wind can be made into two types: right-handed and left-handed. From the side of the motor, the impeller rotates clockwise, called the right rotary fan, and rotates counterclockwise, which is called left-handed rotation.
The multi-blade centrifugal fan is a mechanical machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. According to the principle of converting kinetic energy into potential energy, the gas is accelerated by a high-speed rotating impeller, and then the velocity is reduced and the flow direction is changed so that kinetic energy is converted into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction. When the gas flows through the impeller, it changes to light, and then enters the diffuser. In the diffuser, the gas changes direction of flow and causes deceleration. This deceleration converts kinetic energy into pressure energy. The increase in pressure occurs mainly in the impeller and secondarily in the pressure-diffusion process. In a multi-stage centrifugal fan, a gas stream is introduced into the next impeller with a refluxer to produce a higher pressure.
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