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Miniature Centrifugal Compressor Development

Miniature Centrifugal Compressor Development. Kevin Finney Ray Zhou Xiaoyi Li Krishna Murty. November 22, 2002. Current Status. Motor Motor and controller have been delivered… Methods to cool motor being considered… Compressor Parts

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Miniature Centrifugal Compressor Development

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  1. Miniature Centrifugal Compressor Development • Kevin Finney • Ray Zhou • Xiaoyi Li • Krishna Murty November 22, 2002

  2. Current Status • Motor • Motor and controller have been delivered… • Methods to cool motor being considered… • Compressor Parts • Parts with blades have been sent to machine shop in California for a price quote. You ask, “why California?” • Assembly of Compressor • Jig fixtures needed for assembly are ready to be machined. Waiting to see if the compressor parts can be machined in California. • Safety Shield • Design and construction of the safety shield complete

  3. Motor Update • Received the motor • Motor brackets can be designed and built now. Can include integrated cooling jacket. • Need to obtain an adjustable power supply and solder the wires to the wire leads. • Motor requirements given in following table… Therefore, to obtain the desirable speed and power…

  4. Methods to Cool Motor • Reasonable choices • Use chilled water lines in laboratory • Use external chilling system • Water jacket being designed now to surround motor and remove heat. Need to remove 620 Watts of heat.

  5. Compressor Parts • Machine shop in Sanford determined they weren’t capable of machining the parts with blades. • Been determined that a five axis simultaneous movement CNC mill required. Recommended to find a company with a Deckel Maho CNC Mill. • “WHY CALIFORNIA?” • Machine is difficult to locate • When located, difficult to spark interest for such limited quantity of parts. • Wessdel Manufacturing and Engineering in Santa Clara, CA showed interest.

  6. Compressor Parts Update • Prepared surface and wireframe iges files of the three parts with the blades. • Sent the files and the 3 plastic models to Wessdel Manufacturing and Engineering. • Will have a quote prepared by the first of next week. • Much more interactive company… Wanted me to specify: • Radius at root of blade and hub • Scallop height allowable of material between blades • Tolerance allowable of the blades

  7. Status of Jig Fixtures for Assembly • Parts required for mounting of bearings and assembly of compressor will be machined once the Impeller, Diffuser, and Guide Vane are being machined. • The jig fixture parts aren’t needed until the compressor parts are acquired.

  8. Safety Shield Status

  9. Parts Acquired Bearings Coupler for low RPM Motor and controller Non-bladed compressor parts Safety shield Parts Desired Adjustable power supply Bladed compressor parts Cooling system Coupler for high RPM Measuring devices for required measurements Project Status

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