Overview of external rotor axial fan:
(1) Classification of external rotor axial fans
The "Hangyan" brand external rotor axial flow fans produced by Hangda Company are divided into single-phase asynchronous capacitor operation and three-phase asynchronous operation. Single-phase capacitor running motors are 120V, 60Hz or 220-240V, 50/60Hz, and three-phase asynchronous motors are 380V, 50/60Hz. We can also produce motors with different voltages and frequencies according to customer requirements.
There are 7 series of external rotor axial fans according to the shape of the fan; according to the diameter of the fan impeller, there are more than ten specifications and models from 200mm to 1000mm. The number of blades is 5 or 7; the material is mainly low carbon steel, and the blade angles are various, and the range of options is wide.
Depending on the wind direction, the fan can also be blown or sucked. The suction wind direction is from the wind blade to the direction of the net cover; the blowing wind direction is from the net cover to the direction of the wind blade. In addition, it is also possible to distinguish whether it is blowing or sucking according to the degree of concave and convex of the blades at the leading end of the outer rotor. The concave suction and the convex one are blowing. The blowing and suction can be customized according to customer requirements.
According to different protection levels, it can be divided into IP54, IP44 and fully open axial flow fans. IP54 axial flow fans are mainly used in fresh-keeping cold storage, evaporators, air coolers, chillers, condensing units and other equipment; IP44 axial flow fans are mainly used in central air conditioning, heaters, heat pumps, dehumidifiers and ventilation cycles. Full-open axial flow fans are mainly used for air purifiers and other ventilation equipment with relatively clean environment and low humidity.
"Hangyan" brand can be divided into two kinds of net covers with net cover and without net cover according to the different characteristics of the fan. According to different purposes, we can be known as high cylinder type low cylinder type square louver type fixed single flange Hangda is also equipped with dual-net or single-net according to customer requirements; it can also adjust high temperature and other customizations according to customer needs, and it is a solid copper core wire.
