Description
Product details
Product Description we manufacture and supply supreme quality Exhaust Flow Fan that is used for moving air where the temperature is either hot or cold. The offered flow fan is designed and manufactured by our technical experts using superior grade components and modern techniques to meet the design guidelines as per the international authorities. Further, this Exhaust Flow Fan is available in numerous technical specifications as per the specific application requirements of our clients. Impeller The impellers of the vayuvents fan are tested for simulated aerodynamic loads, load deflection characteristics and the strain at the shank. vayuvents Impellers usually have blades with cross-sections matching those of an aerofoil. As compared to curved sheet blades, aerofoil can apply greater force to the air, thereby increasing maximum pressure and can maintain better efficiency over a wider range of volumetric flow. Also by increasing the thickness & curvature of the inner sections, the blades can be made stiffer; this limits flutter and allows the impellers to run at higher speeds. Construction: Casing The casing encloses the impeller and motor assembly completely. vayuvents axial flow fan casings are generally rolled and flanged from heavy-gauge mild steel. Flameproof and increased-safety motors are not normally placed outside the casing and can be connected directly to the terminal box in accordance with the requirements for the particular hazardous zone. Hub The design of vayuvents fan impeller and hub is based on the worst possible aerodynamic load and centrifugal load scenario. The hub incorporates a system for the adjustment of pitch angle, cleaning or repair of the impellers. Fixings All impellers are assembled together using high-tensile, zinc-plated bolts and self- locking nuts. Balance The balance of impeller assembly complete with the hub is carefully checked to ensure vibration-free running. Both the static & dynamic balance tests are carried out before testing the fan for its performance. Pitch Adjustment The blades of vayuvents axial-flow fans are often attached to the hubs by a system which allows the pitch angle to be set at any desired value on assembly. This adjustment pitch feature enables the fan to be supplied preset for exactly the volume flow required, eliminating the waste of power. Tip Clearance vayuvents fan impellers are generally mounted on the shaft extension of the driving system. This is supported in a cylindrical casing surrounding the impeller with the minimum practical running clearance; a typical value for this radial clearance is 0.25% of the impeller diameter. Fan Driving Systems The fan assembly could be mounted on a wide range of driving systems to meet the desired range of performances and applications. These includes the following: Direct-drive In this case, the fan is directly mounted on the motor shaft inside the casing. Belt drive The belt-driven units are employed for applications where the motor must be placed out of the air stream. Generally, V-belt belts are used by us as the connecting medium. Fan Performance The way vayuvents fan impellers (blades or rotors) are designed, the amount of air they can move decreases as the pressure they are working against increases. The airflow vs. pressure information for a particular fan is called the fan performance data. The performance of a fan depends on the size, shape & speed of the impeller. The fan performance data is essential for selecting fans as per the desired airflow and system pressure. Fan Performance Curves Fan performance curves and data show how much pressure and airflow a given fan can produce at a given speed. This data is based on the system resistance (pressure) occurring away from the fan. Fan performance curves are developed by fan manufacturers based on the testing of a prototype fan fabricated based on the theoretical design. Applications The vayuvents axial flow fans are widely used for providing the required airflow for heat & mass transfer operations in various industrial equipment and processes. These include cooling towers for air-conditioning & ventilation, humidifiers in textile mills, air-heat exchangers for various chemical processes, ventilation & exhaust as in mining industry etc. All the major industries use large number of axial flow fans for operations, such as Power generation, Petroleum refining & petrochemicals, Cement, Chemicals & pharmaceuticals. Features: Compact design High durability Low power consumption Impeccable performance A fan consists of a series of radial blades/impellers attached to a central rotating hub. The rotating assembly of blades and hub comprises a fan assembly and it may or may not be enclosed in a housing. Fans are driven by an electric motor to generate airflow through a given system.
