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Air Purifier with improved multi-blade centrifugal fan design studies

Author: ZhangLi
Tutor: XiDeKe
School: Northwestern Polytechnical University
Course: Fluid Machinery and Engineering
Keywords: Centrifugal fan Numerical Simulation Fluent
CLC: TH432
Type: Master's thesis
Year: 2006
Downloads: 270
Quote: 4
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Abstract


This article is a multi-blade centrifugal fan air purifier with the transformation of Design. Multi-blade centrifugal fan Air Purifier both critical core components , but also in air conditioning and ventilation , electrical equipment, such as thermal cooling has a very wide range of applications . The aim is to improve the design to improve the efficiency of multi-blade centrifugal fan , increasing air flow air cleaner , lower noise ( or at least keep the original noise unchanged ) . The first prototype for the Air Purifier and supporting multi-blade centrifugal fan forward conducted analytical studies and pilot testing . Secondly, multi-blade centrifugal fan traditional design methods for analysis: that the structure of this design approach for the selection of parameters there is great uncertainty ; adopted when designing such a method often leads to a variety of design options ; succeed in many programs of screening programs to be doing a lot of good model test work . In the analysis on the basis of traditional design methods proposed improvement program : a. Use four Bezier curve of the wind turbine blade profile design, and designed based online plus NACA0012 airfoil ; b. To improve volute the flow , reducing the vortex losses in the volute layout grid ; c. also on the volute tongue length and number of leaves were optimized . The merits comparison and improvement program preferred by a large number of numerical simulations done . Finally, improved air purifier machine and separate centrifugal fans experimental verification , the experimental results agree well with the numerical simulation , the error is less than 3% ; and with the prototype test data were compared , the results show that the improved the air cleaner performance than the prototype fine , reaching improvement requirements.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Gas compression and transportation machinery > Fan > Centrifugal ( radial flow )
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