Backward centrifugal fan with backward curved blades ar […]
Backward centrifugal fan with backward curved blades are mainly used for suction and suction. Since most of the pressure buildup occurs in the impeller, the scroll housing is usually not required. Centrifugal fans have very good hydraulic efficiency and low noise levels, making them ideal for high pressure. Centrifugal fans are used in central air conditioning units or building ventilation systems.
Fan from the outer rotor asynchronous motor, plastic or aluminum impeller and other combinations, the motor temperature is low with the unique advantages of ventilation cooling self-cooling. Thereby extending fan life reliability. The backward centrifugal fan for the rear curved impeller, with a compact structure, large air volume, static pressure, vibration, low noise, easy installation and so on. Mainly used for cleaning table, purification unit, ventilation pipe dust, air conditioning system, environmental protection and pollution control and other refrigeration equipment supporting the use of such work.
Forward and backward centrifugal fan mainly equipped with different blades of the fan, the forward type is generally called the blower, the rear type is generally referred to as the draft fan, the difference is the impeller crossbar and impeller edge length. And the impeller is less than 90 degrees for the rear impeller is also known as the rear impeller, the main impeller to the main pressure.
The external rotor motor usually independently hear the abyss of the fan impeller, which appropriately simplifies the amplitude of the active motor. They are in the air, so the temperature is limited, but also IP44 synonyms, so the air needs to be dry, in order to avoid movement pollution. The DC axial fan impeller provides a burden on the impeller's signal and therefore will not be waiting in the apartment. They are very low in size and can be safely and cheaply placed. The air passes through a semicircular ring fatigue, minimizing load loss and air leakage, and is excluded at 90 ° on the basin axis. The impeller has a suitable "non-overloaded" because it is able to absorb the best capacity of its pressure / volume breeze curve center.