Fan blade device for brushless fan

Abstract

The invention relates to the field of brushless fans, in particular to a fan blade device for a brushless fan, which includes a fan blade assembly arranged on the shaft of a brushless motor. There is a buffer mechanism for suppressing the torsional vibration of the drum between the casing of the brushless motor and the casing of the brushless motor. There are a number of paddles fixed on the inner peripheral wall of the drum. The buffer mechanism passes through the air pipe to the storage Air is conveyed inside the air cylinder to increase the internal pressure of the air storage cylinder. The air storage cylinder can generate aerodynamic thrust on the paddle to make the paddle drive the rotor to rotate. The fan blade assembly also includes a ring cylinder. A plurality of vanes are arranged between the outer wall of the cylinder and the inner wall of the annular cylinder. The fan blade device used for the brushless fan improves and guarantees high-efficiency air delivery efficiency, improves the service life of the rotating shaft of the brushless motor, and reduces energy consumption.

Description

technical field [0001] The invention relates to the field of brushless fans, in particular to a fan blade device for a brushless fan. Background technique [0002] The brushless fan uses a brushless motor as the driving element and drives the fan blades to rotate, so as to perform work on the air for air delivery. The blades of the existing brushless fan usually use straight blades, which results in a small conveying wind force, and there will be wind loss at the edge of the blade, thereby increasing the energy consumption of the brushless fan and reducing the air conveying efficiency. Moreover, when the existing fan blades are rotated, due to factors such as processing accuracy, momentum imbalance, and working environment, the entire fan blade will perform torsional vibration on the surface where the central axis of the brushless motor is located, and the brushless fan will generate relatively high vibration. Large vibration, and when the fan blades twist, it will exert be...

AI Technical Summary

Problems solved by technology

The blades of the existing brushless fans usually use straight blades, resulting in a small conveying wind force, and there will be wind loss at the edge of the blades, thereby increasing the energy consumption of the brushless fan and reducing the air conveying efficiency

Moreover, when the existing fan blades are rotated, due to factors such as processing accuracy, momentum imbalance, and working environment, the entire fan blade will perform torsional vibration on the surface where the central axis of the brushless motor is located, and the brushless fan will generate relatively high vibration. Large vibration, and when the fan blades twist, it will exert bending stress on the shaft of the brushless motor, thereby reducing the service life of the shaft of the brushless motor. In addition, the shaft of the brushless motor is greatly affected by the inertia at the moment of starting the fan blade The torsional stress effect of the brushless motor is not conducive to improving the service life of the shaft of the brushless motor. In view of this, we propose a fan blade device for a brushless fan

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