ELECTRICALLY OPERATED VALVE
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United States of America Patent
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Issued Date -
Apr 19, 2012
app pub date -
Sep 16, 2011
filing date -
Oct 18, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An electrically operated valve for controlling a flow rate of cooling medium in a refrigeration cycle is disclosed. The electrically operated valve has a first movable valve body, and a second movable valve body having a first valve seat. The second valve body comes into contactable with second and third valve seats each having larger diameter than the first valve seat. The electrically operated valve comes to a closed state when second valve body seats on second or third valve seat, while first valve body seats on first valve seat. When a power supply is turned on, second valve body comes away from second valve seat to provide a large flow rate. When second valve body seats on third valve seat, the flow is interrupted, and thereafter, when first valve body moves away from first valve seat, the flow rate can be controlled to be small.
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