Axial Lead
Axial Lead
Inline Axial Fans
A variable pitch balde in axial fan blower is used where precise control of static pressure within supply ducts is required. The fan wheel will spin at a constant RPM . The blades follow the control pitch hub. As the hub moves toward the rotor the blades increase their angle of attack and an increase in flow results.
Axial flow ventilators have blades that force air to move along the shaft about which the blades rotate. Axial fans blow air across the axis of the fan, linearly, hence their name. This type of fan is used in a wide variety of applications, ranging from small cooling fans for electronics to the giant fans used in wind tunnels.
Some examples of axial fans are:
Table fan – Basic elements of a typical table fan include the fan blade, base, armature and lead wires, motor, blade guard, motor housing, oscillator gearbox, and oscillator shaft. The oscillator is a mechanism that motions the fan from side to side. The axle comes out on both ends of the motor, one end of the axle is attached to the blade and the other is attached to the oscillator gearbox. The motor case joins to the gearbox to contain the rotor and stator. The oscillator shaft combines to the weighted base and the gearbox. A motor housing covers the oscillator mechanism. The blade guard joins to the motor case for safety.
Electro-mechanical fans – among collectors, are rated according to their condition, size, age, and number of blades. Four-blade designs are the most common. Five-blade or six-blade designs are rare. The materials from which the components are made, such as brass, are important factors in fan desirability.
Ceiling fan with light. Ceiling fan – A fan suspended from the ceiling of a room is a ceiling fan.
In automobiles, a mechanical fan provides engine cooling and prevents the engine from overheating by blowing or sucking air through a coolant-filled radiator. It can be driven with a belt and pulley off the engine’s crankshaft or an electric fan switched on/off by a thermostatic switch.
In centrifugal fan, as opposed to axial flow fan, the air is moving perpendicularly to the fan shaft. Often called a “squirrel cage” (due to its similarity in appearance to exercise wheels for pet rodents), the centrifugal fan has a moving component (called an impeller) that consists of a central shaft about which a set of blades, or ribs, are positioned. Centrifugal fans blow air at right angles to the intake of the fan, and spin the air outwards to the outlet (by deflection and centrifugal force). The impeller rotates, causing air to enter the fan near the shaft and move perpendicularly from the shaft to the opening in the scroll-shaped fan casing. A centrifugal fan produces more pressure for a given air volume, and is used where this is desirable such as in leaf blowers, hair driers, air mattress inflators, inflatable structures, and various industrial purposes. They are typically noisier than comparable axial fans.
A mixed flow fan – is an air moving device in between axial flow fan and centrifugal fan. Mixed Flow fans are an excellent choice for return air, supply, or general ventilation applications where low sound is critical. As compared to similarly sized tubular centrifugals and vane axials, a mixed flow fan will be 5-20 dB quieter! In addition, the mixed flow wheel is extremely efficient and will cut down on operating expenses.
For additional information please refer to http://industrialpressureblower.com.
Susanna Terlitskaia
Industrial Process Ventilation Engineer
Industrial Pressure Blower Co.
http://industrialpressureblower.com/blower.html
http://industrialpressureblower.com/fan.html
About the Author
Oleg Chechel
Ventilation Equipment Designer
Canada Blower
http://www.canadablower.com/index.html
http://www.canadablower.com/oem/index.html
|
|
10 x 5W 0.25 Ohm Axial Lead Wire Wound Cement Resistors $5.35 |
|
|
10 Pcs 5W 700V 360 Ohm Axial Lead Metal Oxide Film Resistors $4.43 |
|
|
500 Pcs Through Hole Axial Lead Zener Diodes 24V 1/2W $12.20 |
|
|
10 Pcs 3W 500V 1.8K Ohm 1K8 Axial Lead Metal Oxide Film Resistors $3.58 |
|
|
500 Pcs 1/2W 22K Ohm Axial Lead Carbon Film Resistors $9.23 |
|
|
2 x 20W 20K Ohm Axial Lead Wire Wound Cement Resistors $4.49 |
|
|
10 x Axial Lead Fixed Wire Wound Resistors 10W 0.05 Ohm 5% $9.35 |
|
|
500 Pcs 350V 30 Ohm Axial Lead Carbon Film Resistors $8.65 |
|
|
20 x 1/2W 350V 5% 2 ohm Carbon Film Resistor Axial Lead $3.47 |
|
|
1.2M Ohm 1/4W Axial Lead Carbon Film Resistors 1000 Pc $6.40 |
|
|
20 x 1/2W 350V 5% 180K ohm Carbon Film Resistor Axial Lead $3.47 |
|
|
Axial Lead 330uH TV Color Ring Fixed Inductors 100 Pcs $7.37 |
|
|
100 Pcs Axial Lead 68uH VCR Color Ring Fixed Inductors $4.99 |
|
|
200 Pcs 2W 330K Ohm 1% Axial Lead Metal Film Resistors $13.23 |
|
|
10 x 6A10 1000V 6A Axial Lead Silicon Rectifier Diodes $3.19 |
|
|
50 x 1/4W 250V 180 ohm Carbon Film Resistors Axial Lead $1.59 |
|
|
50 x 1N5404 400V 3A Axial Lead Silicon Rectifier Diodes $8.46 |
|
|
330 Ohm 5% 10W Wire Wound Axial Lead Cement Resistor x 5 $4.96 |
|
|
100 Pcs Axial Lead 2.2uH VCR Color Ring Fixed Inductors $6.14 |
|
|
Axial Lead 1/2W 27K Ohm 1% Metal Film Resistors 500 Pcs $10.60 |
|
|
2 Pcs 5% 20W 50K Ohm Axial Lead Wirewound Cement Resistors $4.23 |
|
|
200 Pcs 350V 270ohm 2W Axial Lead Carbon Film Resistors $10.27 |
|
|
4700pF 10% 100V Axial lead Ceramic Capacitors (100 pcs) $2.00 |
|
|
200pcs 2W 220K Ohm Axial Lead Fixed Metal Film Resistor $13.24 |
|
|
500 Pcs Solderable Axial Lead Rectifier Diode 1000V 3A $35.79 |
|
|
500 x 1N4004 400V 1A Axial Lead Silicon Rectifier Diode $11.93 |
|
|
50 x 1/4W 250V 200 ohm Axial Lead Carbon Film Resistors $3.26 |
|
|
20 x 1/2W 350V 5% 7.5K ohm Carbon Film Resistor Axial Lead $3.50 |
|
|
5 x 1.5uF DC 400V Axial Lead Electrolytic Tubular Audio Capacitor $5.94 |
|
|
100Pcs Axial Lead 3W 43K Ohm Metal Oxide Film Resistors $8.55 |
|
|
1/2W 120K Ohm 5% Axial Lead Carbon Film Resistors Tape $43.19 |
|
|
20 x 1N5404 400V 3A Axial Lead Silicon Rectifier Diodes $1.99 |
|
|
10 Pcs 15 Ohm 5W Axial Lead Wire Wound Cement Resistors $8.08 |
|
|
10 x 5W 390 Ohm 5% Axial Lead Winding Cement Resistors $4.73 |
|
|
200 x 7.5K Ohm 1% 1 Watt Axial Lead Fixed Metal Film Resistors $10.85 |
|
|
20 x 1/2W 350V 5% 620K ohm Carbon Film Resistor Axial Lead $3.50 |
|
|
10 x 10W 2.7 Ohm Axial Lead Wire Wound Cement Resistors $4.99 |
|
|
5 Pcs 10 Watt 0.5 ohm 5% Axial Lead Ceramic Cement Resistor $4.84 |
|
|
62K ohm 350V Axial Lead Carbon Film Resistors 200 Pcs $12.47 |
|
|
5 x Winding Axial Lead Ceramic Cement Resistor 10W 2.7 ohm $4.41 |
|
|
10 x 6A10 1000V 6A Axial Lead Silicon Rectifier Diodes $4.42 |
|
|
6A 1000V High Voltage Axial Lead Rectifier Diodes 6A10 $23.65 |
|
|
250V 240 KOhm Axial Lead Carbon Film Resistors 1000 Pcs $5.87 |
|
|
10 Pcs 5W 700V 20 Ohm Axial Lead Metal Oxide Film Resistors $4.46 |
|
|
200 x 1 Watt 240 Ohm Axial Lead Fixed Metal Film Resistors $10.85 |
|
|
200 x 2 Watt 2.7 Ohm 5% Carbon Film Axial Lead Resistor $10.27 |
|
|
5W 24 ohm 5% Axial Lead Metal Oxide Film Resistors 700V $10.05 |
|
|
50 x Axial Lead 1/4w 250V 2.4K 2K4 Carbon Film Resistor $1.59 |
|
|
200 Pcs 2 Watt 27K Ohm 1% Axial Lead Metal Film Resistors $12.52 |
|
|
200pcs 2 Watt 2K Ohm 1% Axial Lead Metal Film Resistors $12.28 |