Low-noise micromotor axial-flow fan
An axial-flow fan and micro-motor technology, applied in axial-flow pumps, mechanical equipment, machines/engines, etc., can solve problems such as loud motor noise, and achieve the effects of low cost, comfortable use and high fan speed
Inactive Publication Date: 2018-01-23
DEQING ZHENDA ELECTRIC
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Problems solved by technology
However, in order to ensure sufficient air volume, the axial flow fan has a high speed. At this time, the high-speed air flow and the motor itself will generate relatively large noise, which will have a negative impact on the use of electronic equipment.
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[0013] The present invention will be described in detail below in conjunction with accompanying drawing: Figure 1-3 As shown, a low-noise micro-motor axial flow fan according to the present invention includes a frame 1, a fan is arranged at the axis of the frame 1, the fan includes a stator 3 fixedly connected to the frame 1, and a rotor arranged on the stator 3 4, and the fan blades 2 fixedly arranged on the circumference of the rotor 4, the stator 3 is close to the air inlet of the frame 1, and the rotor 4 is close to the air outlet of the frame 1, and it is characterized in that a section not larger than the frame is arranged in the middle of the inner circular channel of the frame A straight channel 7 with half the thickness, and a section of outward expansion channel 8 is connected by an arc surface on both sides of the straight channel; There are a number of air slots 5 parallel to the connection line between the fan blade 2 and the rotor 4, and the distance between adja...
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The invention discloses a low-noise micromotor axial-flow fan. The low-noise micromotor axial-flow fan comprises a frame; a fan is arranged in the axis of the frame; the fan comprises a stator fixedlyconnected with the frame, a rotor arranged on the stator, and blades fixedly arranged on the periphery of the rotor; the stator is near an intake port of the frame; the rotor is near an exhaust portof the frame; a section of straight channel not larger than one half of the thickness of the frame is formed in middle of a circular channel in the frame; sections of expansion channels are connectedto two sides of the straight channel through arc surfaces; multiple air groove, parallel to connecting lines of the blades and the rotor, are formed between the adjacent blades on the outer surface ofthe rotor in the middle position of the circular channel in the frame; gaps between the adjacent air grooves are the same; convex bars are arranged on the outer edges of the sides of exhaust ports ofthe blades; and the convex bars are provided with side edges outwards inclined. The low-noise micromotor axial-flow fan has such characteristics as reasonable and compact structure, low cost, high fan rotating speed, lower noise under the same rotating speed and air volume, and comfortable use.
Description
technical field [0001] The invention relates to a low-noise micro-motor axial flow fan, which belongs to the technical field of micro-motor fans. Background technique [0002] Cooling fans are installed in home appliances, OA, and IT equipment to cool electronic components that generate heat. In recent years, the miniaturization and high performance of these home appliances, OA, and IT equipment have been advancing in the market. [0003] To cope with the increase in the heat generated by electronic components, a small axial flow fan that is small and easy to obtain air volume is generally used as a fan. However, in order to ensure sufficient air volume, the axial flow fan has a relatively high speed. At this time, the high-speed air flow and the motor itself will generate relatively large noise, which will have a negative impact on the use of electronic equipment. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies in ...
Claims
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IPC IPC(8): F04D19/00F04D29/32F04D29/38F04D29/52F04D25/08F04D29/66H02K1/12
Inventor 蔡忠义
Owner DEQING ZHENDA ELECTRIC