Fan noise reduction method and low-noise fan

• Main Authors: SUN XINGLIN, ZHOU HUIZHU, ZHANG PING, LUO LANYING, SUN YELIN, ZHOU CHIFENG
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2019
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention relates to a fan noise reduction method and a low-noise fan. The fan noise reduction method comprises the steps that a volute is arranged; a plurality of independent air flues are arranged in the volute, and each air flue communicates with an air inlet and an air outlet; and air enters the volute from the air inlet and forms air flow under driving of blades, and the air flow is exhausted from the air outlet through the different air flues. The low-noise fan comprises the volute and a plurality of the blades, the blades are arranged at the air inlet in a surrounding mode, the multiple air flues extend to the air outlet on the basis of the air inlet, and the two ends of the air flues communicate with the air inlet and the air outlet. According to the fan noise reduction methodand the low-noise fan, a plurality of the independent air flues are arranged in the volute, the air flow in the different air flues does not collide with one another and has no interference, the collision frequency of the air