| 摘要 |
PROBLEM TO BE SOLVED: To provide an expansion valve capable of suppressing occurrence of noise due to self-excited vibration of a valve.SOLUTION: An expansion valve includes: an inlet port introducing high-pressure liquid refrigerant; a valve chamber communicating with the inlet port; a valve hole provided in the valve chamber; an outlet port deriving refrigerant expanded at the valve hole toward the outside; a valve member opening/closing the valve hole by contacting to/separating from a valve seat provided at an inlet of the valve hole; a support member supporting the valve member; and a coil spring provided in the valve chamber and energizing the support member toward the valve hole. The expansion valve further includes pressure delay member dividing the valve chamber into a support surface side area and a back surface side area.SELECTED DRAWING: Figure 1 |
