FLOW-ADJUSTING VALVE
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United States of America Patent
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Issued Date -
Jun 26, 2014
app pub date -
Jun 26, 2012
filing date -
Jun 27, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A flow-adjusting valve including a valve base and a valve rod. The valve base has arranged within a valve cavity thereof a valve opening. The valve rod opens or shuts the valve opening. The valve rod is tube-shaped, and the lower part thereof is a cylinder. The valve base has arranged at circumferential positions around the valve opening a sealing stepped surface. A lower end face of the valve rod is sealedly in contact with or disengaged from the sealing stepped surface. Furthermore, the valve opening has protruding upwards along the axial direction thereof a sleeve protrusion part. The sealing stepped surface is arranged within the sleeve protrusion part. The structure of flow-adjusting valve on the one hand balances a refrigerant pressure exerted along the axial direction of the valve rod while on the other hand improves the service life and sealing performance of the valve rod.
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