Structure of check valve with silencing cover
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United States of America Patent
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May 25, 2004
Grant Date -
N/A
app pub date -
Dec 23, 2002
filing date -
Dec 23, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention mainly includes a valve cock and a valve cock cover to form a structure of check valve, of which a trepan boring is set on the cover to accommodate the valve cock, and a pressure guide hole is set on the cover body to connect the high-pressure and valve cock trepan boring. A blast groove is set on the binding surface of the valve cock cover and shielding seat to release refrigerant. The valve cock is pressed against the vent hole of the shielding seat under the effect of the high-pressure chamber, and then the high-pressure refrigerant is blocked from flowing back into the low-pressure chamber. However, the high-pressure refrigerant will directly eject upward against the valve cock when the rotating turbine and fixed whirl run mutually, in addition the high-pressure refrigerant will flow into the high-pressure chamber via the blast groove.
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