The Function Of AC FAN DC FAN Cooling Fan In Our Daily Life
Axial flowFan, A very wide range of uses, that is, the same direction with the fan blade airflow, such as electric fans, air conditioners outside the fan is all the axial flow fan operation. It is called "axial flow" because the gas flows parallel to the fan axis. Axial fans are commonly used in applications requiring high flow rates and low pressure requirements. Axial fans hold the air in place. Axial fan is mainly composed of fan impeller and chassis, the
structure is simple but the data requirements are very high.
A brief explanation
Ordinary axial fan can be used for ventilation in general factories,
warehouses, offices, houses and other places, but also for air cooler (air cooler), evaporator, condenser, spray drop, etc., Flow fan,
Anti-corrosion, explosion-proof axial fan with anti-corrosion materials and explosion-proof measures, and matching explosion-proof motor can be used to transport explosive, volatile, corrosive gases,
Requires axial fan conveying gas should be no significant dust,
non-sticky and fibrous material; motor direct connection type temperature does not exceed 40 °C, belt drive temperature does not exceed 60 °C. The amount of dust conveying gas shall not exceed
150mg / m3,
Axial flow fan is mainly composed of impeller
, casing, motor and other components, the bracket is connected with the casing and the casing. One of the anti-corrosion axial fan impeller, the chassis are made of FRP, other types of axial fans are generally made of steel.
When the impeller rotates, the gas enters the impeller axially from the air inlet and is pushed by the impeller blades to increase the energy of the gas, and then flows into the guide vanes. The guide vanes turn the deflected air flow into an axial flow while introducing the gas into the diffuser pipe, further converting the kinetic energy of the gas into pressure energy and finally introducing the working pipe.
Axial fan blades’s working way is in a similar way to the wings of an airplane. However, the latter is to lift up the role of the wing and support the weight of the aircraft, while the axial fan is fixed position and make the air move.
Axial fan cross-section of the general profile of the wing. The blade can be fixed in position and can also rotate about its longitudinalaxis. The angle of the blades to the airflow or the pitch of the blades may not be adjustable or adjustable. Changing the blade angle or pitch is one of the major advantages of axial flow fans. Small blade pitch angle produces a lower flow rate, while
increasing the pitch produces a higher flow rate.Advanced axial flow fans can vary the blade pitch as the fan runs (much like a helicopter rotor), changing the flow accordingly. This is called a vane
adjustable (VP) axial flow fan.
Axial fan also known as the local Fan, Is a commonly used fan of industrial and mining enterprises, but different from the average fan Its motor and fan blades are in a cylinder, the shape is a barrel for local ventilation, easy installation, ventilation effect is obvious, safe, Can be accessed Hair dryer Send the wind to the designated area.
According to the characteristics of axial fans make the following
According to the material classification: steel fan,
FRP fan, Plastic fan, PP fan, PVC fan, magnesium alloy fan, aluminum fan, stainless steel fan and so on.
Classified by purpose: Explosion-proof fan,anti-corrosionfan,
explosion-proof anti-corrosion, special axial fan blower and other types.
According to the requirements of the use of classification: pipe, wall, post type, fixed, waterproog and dustproof, removable, external motor and so on.
According to the installation can be divided into: belt drive, motor direct connection.
When Axial flow fan start-up, themotor current will be higher than the rated 5-6 times, not only will affect the service life of the motor and consume more power. The system design in the motor selection will leave some margin , The motor speed is fixed, but in actual uses, sometimes to lower or higher speed operation, so the frequency conversion transformation is very necessary.Inverter Can let the motor start softly, achieve the purpose of energy-saving speed regulation by changing the input voltage frequency of the equipment, and can also provide over-current, over-voltage and overload protection functions for the equipment.
It can be used for ventilating or enhancing the heat dissipation in
metallurgy, chemical industry, light industry, foodstuff, medical equipment, machinery equipment, civil buildings, etc. If the case is removed, it can also be used as a free fan, Inter-pipe spacing installed in series to improve the pipeline Wind pressure.
Axial fan features:
Small axial fans: low power consumption, fast cooling, low noise, energy saving and environmental protection. Because of its small size and more extensive use.
Large-scale axial fan has a simple structure, solid and reliable,
low noise, large air volume, wide selection of features and other