Vacuum ejector pumps
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United States of America Patent
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Jul 31, 2012
Grant Date -
Nov 27, 2008
app pub date -
Dec 21, 2006
filing date -
Dec 30, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed herein is a vacuum ejector pump. The pump is operated by compressed air which is supplied to or discharged from the pump at high speed, thus creating negative pressure in an outer surrounding space. The ejector pump includes a frame having an air inlet pipe, a disc, and an air outlet pipe which are sequentially arranged to be spaced apart from each other. The parts are coupled into a single structure via a spacer. A nozzle is mounted to pass through the center of the disc, and a flexible valve member is mounted to the spacer A nozzle body is accommodated in a cylindrical casing having a hole at a position corresponding to the valve member, and defines a chamber inside the spacer. A locking structure is provided on the casing and the nozzle body so as to prevent the casing, which accommodates the nozzle body, from rotating.
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