Pulse-free blower
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United States of America Patent
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-
Aug 5, 1980
Grant Date -
N/A
app pub date -
Nov 14, 1977
filing date -
Nov 14, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A three-lobe Root's blower is provided with feed back structure to bring the gas trapped in the impeller well volumes up to the discharge pressure prior to delivery. An essentially uniform and pulse-free discharge is produced by having a constant feed back flow rate which is achieved by always having a trapped impeller well volume in communication with the outlet via feed back structure which is sized to yield a continuous feed back flow rate.
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