Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Radial flow casing having vaneless annulus diffuser
Patent
1991-08-01
1992-09-08
Denion, Thomas E.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Radial flow casing having vaneless annulus diffuser
415203, 415206, 415207, 4152083, 4152082, F01D 106
Patent
active
051453177
ABSTRACT:
A pipe diffuser is used in a centrifugal compressor in such a way as to obtain high efficiency over a broad operating range. The number of channels in the pipe diffuser is limited such that the wedge angle is relatively large and therefore not susceptible to flow separation at the leading edges thereof. The vaneless space between the impeller and the leading edge circle of the diffuser is limited in its radial depth such that the flow separations are further inhibited. Finally, the impeller has a relatively high backsweep such that the absolute flow exit angle is relatively low, thereby reducing the sensitivity to lower flow conditions.
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Carrier Corporation
Denion Thomas E.
Mattingly Todd
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