Low-noise air guide ring and fan comprising same

An air guide ring and low-noise technology, which is applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as the inability to reduce the noise at the air outlet of the air guide ring, so as to avoid the increase of fan noise, facilitate manufacturing, and reduce The effect of eddy current noise

Pending Publication Date: 2022-01-28
FANS TECH ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The guide groove in this patent application is set on the inner ring wall of the air guide ring, which cannot reduce the noise of the air outlet of the air guide ring

Method used

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  • Low-noise air guide ring and fan comprising same
  • Low-noise air guide ring and fan comprising same
  • Low-noise air guide ring and fan comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, a low-noise wind guide ring 1, the air outlet of the wind guide ring 1 is provided with a multi-layer sawtooth noise reduction structure 11 distributed from the inner side of the wind guide ring 1 to the outside, and each layer of noise reduction structure includes There are several sawtooths, the sawtooth on the sawtooth noise reduction structure 11 extends along the axial direction of the wind guide ring 1 , and the thickness of the sawtooth noise reduction structure 11 gradually increases from the inside to the outside of the wind guide ring 1 . This setting makes the layers of the multi-layer sawtooth noise reduction structure 11 superimposed and arranged from the inside to the outside to form a multi-level noise reduction. The use of a multi-layer sawtooth bionic noise reduction structure at the air outlet of the air guide ring 1 can effectively reduce or delay the installation in the guide ring 1. The air flow generated by the rotation o...

Embodiment 2

[0056] This embodiment only describes the differences from the above embodiments. In this embodiment, the sawtooth noise reduction structure 11 also includes an intermediate layer noise reduction structure located between the outer layer noise reduction structure 111 and the inner layer noise reduction structure 112. Noise structure, the middle layer noise reduction structure is provided with at least one layer. Specifically, the middle layer noise reduction structure is provided with one layer, and the sawtooth noise reduction structure 11 is provided with three layers in total. The sawtooth thickness is L1, the sawtooth height is h1, the sawtooth thickness of the second inner layer, that is, the middle layer noise reduction structure, is L2, and the sawtooth height is h2, and the third layer, that is, the inner layer noise reduction structure 112, has a sawtooth thickness of L3, and The height is h3, L1≧L2≧L3, h1≧h2≧h3; this setting can avoid the excessive thickness and heig...

Embodiment 3

[0058] Such as Figure 4 and 5 As shown, a fan includes a wind wheel 2, a guide vane bracket 3, a wind guide ring 1 and a motor 4, the motor 4 is connected to the wind wheel 2, and the outlet section of the wind guide ring 1 is close to the guide At the air outlet of the air guide ring 1, the inlet end of the air guide ring 1 is close to the air inlet of the air guide ring 1. It is characterized in that the guide vane bracket 3 is arranged at the outlet section of the air guide ring 1, The wind wheel 2 is arranged at the inlet section of the wind guide ring 1, and the wind guide ring 1 is the wind guide ring 1 described in any of the above-mentioned embodiments, and the innermost sawtooth between the wind wheel 2 and the wind guide ring 1 A transitional rectification section is provided between the tooth roots of the noise reduction structure 11, the height of the transitional rectification section is H2, the height of the wind wheel 2 is H1, H2≧0.2H1. This setting is becaus...

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Abstract

The invention discloses a low-noise air guide ring and a fan comprising the same. The fan comprises a wind wheel, a guide vane support, the air guide ring and a motor. The guide vane support is arranged on an outlet section of the air guide ring, the wind wheel is arranged on an inlet section of the air guide ring, and a plurality of layers of sawtooth noise reduction structures distributed from the inner side of the air guide ring to the outer side of the air guide ring are arranged at a wind outlet of the air guide ring. Each layer of noise reduction structure comprises a plurality of sawteeth, the sawteeth on the sawtooth noise reduction structures extend in the axial direction of the air guide ring, and the thickness of the sawtooth noise reduction structures is gradually increased from the inner side of the air guide ring to the outer side of the air guide ring. The multiple layers of sawtooth noise reduction structures are arranged in a stacked mode from inside to outside to form multi-stage noise reduction. As the multiple layers of sawtooth noise reduction structures are adopted at the air outlet of the air guide ring, vortex separation of airflow generated by rotation of the wind wheel installed in the air guide ring at the air outlet of the air guide ring can be effectively reduced or delayed, vortex noise generated at the outlet of the fan is effectively reduced, and the noise of the fan is reduced. The noise reduction effect of the structure on the fan with the high rotating speed and the high air flow speed at the outlet is particularly outstanding.

Description

technical field [0001] The invention belongs to the technical field of fan wind guide rings, and in particular relates to a low-noise wind guide ring and a fan thereof. Background technique [0002] In the fan industry, if the airflow velocity at the outlet of the conventional air guide ring is too high, the vortex shedding of the outlet air flow will occur and the noise of the fan will increase. However, the design of the multi-layer sawtooth bionic noise reduction structure at the air outlet of the air guide ring can effectively reduce or delay the airflow The noise of the fan increases due to the shedding of the airflow at the air outlet of the air guide ring, which effectively reduces the noise of the fan, especially for fans with high air velocity at the outlet of the air guide ring of high-speed fans. Easy to manufacture. [0003] The patent with publication number CN105650033A relates to a refrigerator and its fan assembly, wherein the fan assembly includes: a fan wi...

Claims

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Application Information

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IPC IPC(8): F04D29/54F04D29/66F04D25/08F04D19/00
CPCF04D29/541F04D29/663F04D25/08F04D19/002
Inventor 莫远忠
Owner FANS TECH ELECTRIC CO LTD
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