Energy saving fan component

Abstract

The invention provides an energy saving fan component. The energy saving fan component comprises a shell provided with a volute centrifugal fan inside, and further comprises a brushless direct-current motor, wherein cooling ribs are arranged on the shell of the motor; and when the brushless direct-current motor rotates, air exhausted by a multi-wing closed impeller penetrates through a filter component and flows through the cooling ribs of the brushless direct-current motor to enter a volute, and is blown out from air pipes. The energy saving fan component has the following beneficial effects: the motor in the fan component adopts the brushless direct-current motor specially matched with the volute impeller; the structure is simple; the rotating speed control precision is high; and the advantages of strong interference resistance and high reliability are achieved. The matched volute centrifugal fan impeller adopts the multi-wing closed impeller; blades of the impeller have special radians to reduce the air resistance and the airflow disturbance; the impeller fits a matched volute component; the whole efficiency of the fan is higher; and the energy is saved by more than 20%. Compared with a mode of serial connection of a cooling fan, the efficiency of the fan is higher by more than 50%, the service life of the fan is long, and the air pressure magnitude is adjustable.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to an energy-saving fan assembly. Background technique [0002] Currently used in CNC processing, stamping processing, grinding, air drying, air showers, etc. where high-pressure blowing equipment is required, the main solution is to use the original air compressor, and the fan assembly powered by an induction motor with frequency conversion and speed regulation by a frequency converter , and the way of connecting small cooling fans in series to increase wind pressure. [0003] 1. Using the air compressor scheme, in order to maintain the air pressure, it needs to be turned on all the time even when it is not working, and the electric energy is wasted seriously. Moreover, in the process of air compression, the water vapor in the air will condense into water droplets, which cannot be used in special occasions. [0004] 2. The fan assembly powered by the induction motor controlled by th...

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Problems solved by technology

[0003] 1. The air compressor solution is used. In order to maintain the air pressure, it needs to be turned on even when it is not working, and the waste of electric energy is serious.

Moreover, during the air compression process, the water vapor in the air will condense into water droplets, which cannot be used in special occasions.

[0004] 2. The fan assembly powered by an induction motor whose speed is controlled by a frequency converter needs to obtain high-speed air output, so the motor speed is very high, and since the small induction motor is a relatively traditional type of motor, there is a volume in the case of high speed Large, low efficiency, severe heat generation, must be equipped with cooling devices and other shortcomings, the energy saving effect is not ideal

In addition, the impeller of the induction motor fan component with variable speed frequency converter adopts the front semi-open impeller, and the overall efficiency of the fan is low

[0005] 3. The method of increasing the wind pressure by connecting small heat dissipation fans in series, generally in order to increase the wind pressure, about 10 heat dissipation fans are connected in series, and each fan works independently, the motor itself has low efficiency, low speed, and low wind pressure. The fan efficiency of the solution is also low, and after the fan blades adhere to dust and other impurities, the speed will decrease, and the air pressure of the fan will attenuate and become unusable. Due to the low overload capacity of this small cooling fan, it is easy to damage

[0006] 4. The heat dissipation of the motor in the existing supporting fans of this type adopts an external cooling fan or a built-in cooling fan in the exposed air of the motor shell, while the external cooling fan needs to be equipped with a cooling fan, which requires additional power supply and damages the electric energy. Once the cooling fan is damaged After that, it will cause the heat of the motor to dissipate and burn out

The motor housing is exposed to the air and the built-in cooling fan is easy to introduce a lot of dust, oily smoke and other sundries into the motor, which will cause damage to the motor bearing, block the motor, and eventually damage the fan

[0007] 5. Due to the high negative pressure and strong suction at the air inlet of the existing fan components, the filter device used only relies on metal mesh covers and other methods, which can only filter debris with relatively large particles, and cannot filter dust, oil fume, etc. at all.

During the high-speed operation of the fan, the impeller will adhere to impurities such as dust, soot, etc., which will affect the dynamic balance of the impeller, which will cause the fan to vibrate greatly, even the impeller will fall off, and the bearing will be damaged, which will affect the life of the fan.

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