Counter-rotary axial fan with adjustable inlet guide vanes

A technology of imported guide vanes and axial flow fans, applied in axial flow pumps, mechanical equipment, machines/engines, etc., can solve the problems of inconvenient adjustment of the flow-pressure performance curve, achieve high adjustment efficiency, simple and easy adjustment structure Achieved effect

Inactive Publication Date: 2006-12-06
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0004] In order to solve the disadvantages of inconvenient adjustment of the flow-pressure performance curve of the various counter-rotating axial flow fans mentioned above, the purpose of the present invention is to provide a counter-rotating axial flow fan with adjustable inlet guide vanes, which can simply and efficiently counter-rotate The performance curve of the axial flow fan is adjusted

Method used

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  • Counter-rotary axial fan with adjustable inlet guide vanes
  • Counter-rotary axial fan with adjustable inlet guide vanes
  • Counter-rotary axial fan with adjustable inlet guide vanes

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Embodiment Construction

[0013] The structure and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] see figure 1 , a counter-rotating axial flow fan with adjustable inlet guide vanes, including an air collector 1, the air collector 1 is sequentially connected with the first-stage fan outer cylinder 11, the second-stage fan outer cylinder 12, and the diffuser cylinder 13, and the air collector 1 In the casing composed of the first-stage fan outer cylinder 11, the second-stage fan outer cylinder 12 and the diffuser cylinder 13, the first-stage motor 4, the first-stage moving blade 6, the second-stage moving blade 7 and the second-stage motor 8 are set in sequence, the first-stage motor 4 and the second-stage motor 8 are supported by the first-stage fan inner cylinder 3 and the second-stage fan inner cylinder 9 respectively, the first-stage fan inner cylinder 3 is connected to the fairing 2, and the second-stage fan The i...

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Abstract

A contrarotating axial-flow fan with adjustable guide inlet blade is composed of air gathering unit, the first-stage fan with internal and external barrels, motor and rotary blade wheel, the second-stage for with internal and external barrels, motor and rotary blade wheel, and the adjustable guide inlet blade installed to the internal barrel of the first-stage fan for increasing the regulation range of performance curve.

Description

technical field [0001] The invention relates to a counter-rotating axial flow fan, in particular to a counter-rotating axial flow fan with adjustable inlet guide vanes. Background technique [0002] The counter-rotating axial flow fan is a ventilation equipment widely used in underground coal mines, railways and highway tunnel projects in my country. It is compact in size, easy to transport and install, and can achieve high wind pressure and high efficiency. In addition, compared with ordinary multi-stage axial flow Fan, counter-rotating axial flow fan reverse anti-wind performance is also very prominent. However, with the use of counter cyclone fans, such as underground coal mines, railway and highway tunnel excavation, the pipe network resistance corresponding to the fan has been changing, which will lead to changes in the working point of the fan, especially when the pipe network resistance changes When it is larger, the fan will work at a very low efficiency point, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/56F04D19/02
Inventor 李景银
Owner XI AN JIAOTONG UNIV
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