ELECTRICALLY DRIVEN SECONDARY AIR PUMP INCLUDING COMPRESSOR HAVING VANED DIFFUSER RING EMBEDDED IN VOLUTE
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United States of America Patent
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Issued Date -
Oct 17, 2024
app pub date -
Apr 13, 2023
filing date -
Apr 13, 2023
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status (Latency Note)
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Abstract
An air pump includes a compressor having a compressor wheel mounted in a housing assembly defining an air inlet for leading air flow into the compressor wheel and defining a volute for receiving compressed air from the compressor wheel. A vaned diffuser ring is mounted within the housing assembly radially outward of the compressor wheel and includes an annular vane plate and a plurality of circumferentially spaced vanes having proximal ends rigidly attached to a first side of the plate, the vanes extending axially from the vane plate and distal ends of the vanes being disposed proximate a first wall of the housing assembly axially spaced from the plate such that a vaned diffuser passage is defined between said first wall and the vane plate. The vaned diffuser ring is embedded within the volute such that a second side of the vane plate is wetted by air within the volute.
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