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Annular muffler device for large-sized air cooling fan

A technology of a muffler device and a cooling fan, which is applied to the components of the pumping device for elastic fluids, mechanical equipment, machines/engines, etc. Advanced problems, to achieve the effect of low noise, improved air intake flow field, and improved fan efficiency

Inactive Publication Date: 2013-02-13
江苏中联风能机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Large-scale air-cooling fans are used in power plants, cement plants, machinery factories, etc. Such factories are easily affected by the environment, and dust and noise are the main sources of pollution. Large-scale air-cooling fans have high energy consumption and high noise, which has endangered the health of workers operating in the factory up

Method used

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  • Annular muffler device for large-sized air cooling fan
  • Annular muffler device for large-sized air cooling fan

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] Such as figure 1 and 2 As shown, a large-scale air-cooled fan ring muffler device of the present invention includes a fan 1, a middle transition section 2 and a muffler 4, the middle transition section 2 is connected with the fan 1 air cylinder 3 and the muffler 4 shell respectively, and the muffler 4 is filled inside There is sound-absorbing cotton 5, and the muffler 4 is a ring muffler, and the outer surface of the ring muffler is a perforated plate 6 with a perforation rate of 25%.

[0014] The noise of the entire air-cooling island fan can be reduced, and the installation of the lower muffler 4 in the ring muffler device of the large-scale air-cooling fan can improve the air inlet flow field of the impeller of the upper fan 1 and increase the efficiency of the fan 1 by 1.5%.

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Abstract

The invention discloses an annular muffling device for a large-sized air cooling fan, which comprises a fan, a middle transition section and a muffler, wherein the middle transition section is connected with a fan air drum and a muffler casing respectively, and muffling cotton is filled in the muffler. The annular muffler device has the advantages that as the muffler is mounted at the middle lower part of the annular muffling device for the large-sized air cooling fan, an inlet airflow field of a fan impeller at the upper part can be improved, the efficiency of the fan is improved by 1.5%, and the noise is low.

Description

technical field [0001] The invention relates to a noise elimination device, in particular to an annular noise elimination device for a large air cooling fan. Background technique [0002] Large-scale air-cooling fans are used in power plants, cement plants, machinery factories, etc. Such factories are easily affected by the environment, and dust and noise are the main sources of pollution. Large-scale air-cooling fans have high energy consumption and high noise, which has endangered the health of workers operating in the factory up. Therefore, it is necessary to provide a new technical solution to solve the above problems. Contents of the invention [0003] The purpose of the present invention is to provide a large-scale air-cooling fan annular noise reduction device with low noise. [0004] The technical scheme adopted in the present invention is: [0005] A large-scale air-cooled fan ring muffler device, which includes a fan, an intermediate transition section and a m...

Claims

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Application Information

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IPC IPC(8): F04D29/66
Inventor 李士成
Owner 江苏中联风能机械股份有限公司