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Noise reduction devices, noise reduction device components, axial fans and air conditioners

A technology of a muffler device and an axial flow fan, applied in the field of noise reduction, can solve the problems of reduced work efficiency, difficulty in secondary use of the fan, and only scrapping.

Active Publication Date: 2022-01-25
CHONGQING MIDEA GENERAL REFRIGERATING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In related technologies, fan equipment manufacturers develop lower-noise fans, and reduce noise through the following methods without adding other structures or equipment: sacrifice the air volume of the fan, but will cause a significant decrease in work efficiency; increase other structural adjustments The state of air flow (such as adding a spoiler), but obviously increases the cost of the fan
In addition, for the above two noise reduction directions, if the noise on the site is already harmful, the only measure to take is to replace the fan. Not only the development cost is high, but the rectification cost on the project site is also very high (mainly the replacement of the fan Difficult to re-use, can only be scrapped)
[0004] In addition, in the related art, there is a method of using porous metal plate to achieve the effect of noise reduction, but its structure is relatively complicated (there are many overall parts and cumbersome assembly)

Method used

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  • Noise reduction devices, noise reduction device components, axial fans and air conditioners
  • Noise reduction devices, noise reduction device components, axial fans and air conditioners
  • Noise reduction devices, noise reduction device components, axial fans and air conditioners

Examples

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Embodiment 1

[0085] Such as Figure 1 to Figure 10 As shown, the first embodiment of the present invention proposes a noise reduction device 100 , including: a cylinder 102 and a first sound-absorbing member 108 .

[0086] Among them, such as figure 2 As shown, an air inlet 104 and an air outlet 106 are respectively provided at both ends of the cylinder 102, and an air duct (the air duct is not shown in the figure) is formed inside the cylinder 102, so that the air inlet 104 passes through the air duct and the air outlet. 106 are connected to ensure gas circulation; a first sound-absorbing member 108 is provided inside the cylinder 102, and the first sound-absorbing member 108 at least partially covers the inner wall of the cylinder 102, and the first sound-absorbing member 108 can absorb the Noise, in order to play the role of noise reduction.

[0087] The noise reduction device 100 proposed in this embodiment can realize the effect of noise reduction with a simple structure, the cost ...

Embodiment 2

[0090] Such as Figure 1 to Figure 10 As shown, the second embodiment of the present invention proposes a noise reduction device 100 , including: a cylinder body 102 , a first sound absorbing member 108 and a partition assembly 110 .

[0091]Wherein, an air inlet 104 and an air outlet 106 are respectively provided at both ends of the cylinder 102, and an air duct is formed inside the cylinder 102; a partition assembly 110 is arranged inside the cylinder 102, and the air duct is divided into a plurality of sub-air ducts 112, each sub-air channel 112 is connected through the air inlet 104 and the air outlet 106 to ensure gas circulation; a first sound-absorbing member 108 is arranged inside the cylinder 102, and the first sound-absorbing member 108 at least partially covers the cylinder 102 The inner wall of the first sound-absorbing member 108 can absorb noise in the process of gas circulation, so as to play the role of noise reduction; the separation component 110 makes the st...

Embodiment 3

[0095] The third embodiment of the present invention proposes a sound attenuation device, comprising: a cylinder body, a first sound-absorbing member and a partition assembly; the partition assembly includes a plurality of first partitions (this embodiment is not shown in the figure).

[0096] In this embodiment, an air inlet and an air outlet are respectively provided at both ends of the barrel, and an air duct is formed inside the barrel; the partition assembly includes a plurality of first partitions, and the plurality of first partitions divide the air duct into It is a plurality of sub-air channels, and each sub-air channel is connected through the air inlet and the air outlet to ensure gas circulation; a first sound-absorbing member is arranged inside the cylinder, and the first sound-absorbing member at least partially covers the inner wall of the cylinder, The first sound-absorbing part can absorb noise in the process of gas circulation, so as to play the role of noise ...

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Abstract

The present invention proposes a muffler, a muffler assembly, an axial fan, and an air conditioner, wherein the muffler includes: a cylinder, the cylinder includes an air inlet and an air outlet, and an air duct is formed inside the cylinder; A sound-absorbing piece, the first sound-absorbing piece at least partially covers the inner wall of the barrel. The noise elimination device proposed by the present invention can realize the effect of noise elimination and noise reduction by adopting a simple structure, the cost is low, the construction process is simpler, and it is especially suitable for rectification on the engineering site.

Description

technical field [0001] The invention relates to the field of noise reduction, in particular to a noise reduction device, a noise reduction device assembly, an axial flow fan and an air conditioner. Background technique [0002] For industrial and civil occasions, the use of some HVAC and ventilation equipment requires the use of related fans, such as: cooling fans used in large-scale air-cooled central air conditioners in HVAC, cooling fans used in cooling towers, and exhaust air from factories. Exhaust fans used in facilities, etc. These devices are often arranged in the open air not far from personnel activities, and the wind turbines will generate relatively large noise, especially low-frequency noise, which seriously affects the daily life of surrounding residents and the normal work of related personnel. In particular, most living quarters have installed related large-scale air-conditioning equipment, which is located close to the residential area. The fan noise of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F24F13/24
CPCF04D29/664F04D29/667F24F13/24F24F2013/242
Inventor 张仁亮张运乾
Owner CHONGQING MIDEA GENERAL REFRIGERATING EQUIP