REFRIGERATION SYSTEM AND BALL VALVE THEREOF
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United States of America Patent
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Issued Date -
Jan 1, 2015
app pub date -
Dec 31, 2012
filing date -
Feb 21, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A ball valve includes a valve body, the valve body has a valve cavity, a first connecting port and a second connecting port; a valve rod and a valve ball are provided inside the valve cavity, the valve ball is provided with a valve ball passage, the valve rod is configured to drive the valve ball to rotate to allow or disconnect a communication between the first connecting port and the second connecting port via the valve ball passage; wherein, a one-way valve having a preset opening pressure is provided between the valve ball passage and the first connecting port, and in a case that the valve ball disconnects the communication between the first connecting port and the second connecting port, the one-way valve is configured to allow a one-way communication from the valve ball passage to the first connecting port.
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