CHECK VALVE FOR COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To stabilize the operation of a valve element by suppressing a hunting phenomenon.SOLUTION: A check valve 10 for a compressor includes a valve element 15, a valve seat 11 having a valve hole 12, and a valve housing 13 having a communication window 14. The valve element 15 includes an abutment face 15d and an outer peripheral face 15c. The valve hole 12 includes a large diameter part 12a and a small diameter part 12b. The communication window 14 shaped so that its opening area is gradually larger as getting farther from the valve seat 11. The abutment face separates from the large diameter part and the outer peripheral face opens the communication window to form an opened state. The abutment face closes the large diameter part and the outer peripheral face interrupts communication via the communication window to form a fully closed state. The abutment face separates from the large diameter part and the outer peripheral face interrupts the communication via the communication window to form a buffered state.