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Low-noise axial flow fan

An axial-flow fan, low-noise technology, applied in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as the impact of the scope of application, increase the manufacturing cost of the fan, affect the use effect of the fan, etc., to achieve low manufacturing cost and use. Wide range, the effect of preventing rainwater from pouring back

Inactive Publication Date: 2014-04-30
无锡佳谊林电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the noise reduction measures commonly used in the industry are achieved by reducing the motor power of the fan and reducing the air flow, which will affect the actual use effect of the fan and affect its scope of application
Another commonly used noise reduction measure is to set up special sound insulation facilities outside the fan, which will increase the manufacturing cost of the fan

Method used

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Such as Figure 1 to Figure 4 As shown, the low-noise axial flow fan of the present invention includes a casing 2, which is cylindrical and has openings at both ends, and a square frame 1 is arranged on both opening ends. There is a motor 8 in the casing 2, and brackets 9 are evenly distributed between the motor 8 and the inner wall of the casing 2. The motor 8 is fixedly connected with the casing 2 through these brackets 9, so that the output shaft of the motor 8 is connected to the axis of the casing 2. on the same line. Blades 7 are evenly distributed on the output shaft of the motor 8, and the distance between the outer end of the blade 7 and the inner wall of the casing 2 is less than or equal to 10mm. A net cover 10 is arranged in the frame 1 of the opening end of the casing 2 corresponding to the windward side of the blade 7 , and a louver is ...

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Abstract

The invention relates to ventilation equipment, in particular to a low-noise axial flow fan for indoor ventilation. The low-noise axial flow fan comprises a cylindrical machine case with the two open ends. A motor is arranged in the machine case. A support is arranged between the motor and the inner wall of the machine case. The motor is fixedly connected with the machine case through a support, so that the output shaft of the motor and the axis of the machine case are located on the same straight line. The output shaft of the motor is uniformly provided with vanes. The open end, corresponding to the windward faces of the vanes, of the machine case is provided with a screen. The open end, corresponding to the leeward faces of the vanes, of the machine case is provided with shutters. The low-noise axial flow fan is characterized in that the gap between the outer ends of the vanes and the inner wall of the machine case is smaller than 10mm. Motor power does not need to be lowered, a sound-proof facility is not needed, and the low-noise axial flow fan can achieve the effect of noise reduction, and is wide in application range and low in manufacturing cost.

Description

technical field [0001] The invention relates to a ventilation device, specifically a low-noise axial flow fan for indoor ventilation, which can be used for ventilation or enhanced heat dissipation in industrial and mining enterprises, civil buildings and other places that have requirements for noise, and is especially suitable for SF6 switch rooms , Transformer room, capacitor room, warehouse, basement and other places. Background technique [0002] According to analysis and research, the noise of the axial flow fan is mainly caused by the pulsating force generated by the blades acting on the airflow passing through the fan. The greater the passing airflow, the greater the noise. The air flow of the fan is proportional to the size. Therefore, the noise reduction measures commonly adopted in the industry are realized by reducing the motor power of the fan and reducing the air flow, which will affect the actual use effect of the fan and affect its scope of application. Anoth...

Claims

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Application Information

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IPC IPC(8): F04D29/66F04D25/08F04D29/52
Inventor 贾明杨文斌蒋科皇甫伟刚陈彦哲孙子安邬日新钱家阳
Owner 无锡佳谊林电气有限公司
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