Title: Diffuser including movable vanes

Abstract: A diffuser for use with a centrifugal compressor utilizes a symmetric arrangement of vanes which direct the gas flow along a plurality of passageways that are substantially tangential to the outer periphery of the impeller. Each vane making up the array is pivotally mounted near its opposite ends. Controls are provided so that rotation of the vane assembly about the innermost set of pivot points will vary the cross-sectional area of the ducts formed between adjacent vane members. This allows efficiency of the diffuser-compressor combination to be maximized for a multiplicity of speed and load conditions.

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Inventors: Balje, Otto E. (Los Angeles, CA, US)

Application Number: 532932
Filing Date: 1974-12-16
Publication_date: 1976-06-15
Assignee: Avco Corporation (Williamsport, PA)
Primary Class(es): 415/148 415/181
Other Classes:
US Patent Ref:

1136877	Apr, 1915	Homersham	415/146.
2341974	Feb, 1944	Browne	415/163.
2456779	Dec, 1948	Goetzel	416/241.
2967013	Jan, 1961	Dallenbach et al.	415/181.
2976013	Mar, 1961	Hunter	415/163.
3243159	Mar, 1966	Hefler et al.	415/163.
3333762	Aug, 1967	Vrana	415/211.
3799694	Mar, 1974	Duzan	415/163.
3873232	Mar, 1975	Stein et al.	415/211.
3930746	Jan, 1976	Kronogard	415/149.

Other Refs:
Primary Examiner: Raduazo, Henry F.
Assistant Examiner:
Attorney: Hogan; Charles M., Garfinkle; Irwin P.