Yantai fan cold storage fan

.Fans include ventilators, blowers and compressors, but do not include positive displacement blowers and compressors. There are many types of fans, and common classifications are based on the material of the fan, the gas flow direction of the fan, and the purpose of the fan. Classification of Fan Materials The most commonly used material for fans is cast iron, and ordinary fans belong to this type of iron-cased fans. Fans are also made of other materials, such as fiberglass fans, fans, aluminum alloy fans, stainless steel fans, etc. Fans made of these materials have better anti-corrosion, anti-abrasion or high temperature resistance. The gas flow direction of the fan refers to the direction in which the gas flows when the fan is running. If the gas flow direction is the same as the axis of the impeller, it is an axial flow fan. If the gas moves centrifugally with the axis of the impeller as the center, it is a centrifugal fan. fan. In addition to these two types, fans that divide the gas flow direction include oblique flow fans and cross flow fans. Classification of fan uses Fans can also be divided into multiple types according to different uses, such as smoke exhaust fans, air conditioning fans, roof fans, etc. These fans are designed for special purposes, so they are different from ordinary fans in terms of appearance, material, function, etc. For example, roof fans can be designed with two-way reversible air supply and exhaust. Other classifications of fans: Fans can be divided into single-stage pressurized fans, double-stage pressurized fans and multi-stage pressurized fans according to the number of times they pressurize the air flow. For example, Roots blowers are typical multi-stage pressurized fans. Fans can also be divided into push-in fans and pull-out fans according to the design structure and the installation position of the motor.