| 摘要 |
<p>PROBLEM TO BE SOLVED: To restrict occurrence of pressure loss caused by entering of refrigerant into a valve chamber.SOLUTION: When a valve body 12 opens a valve hole, a clearance is formed between an inner circumferential surface 13s of a valve housing 13 and an outer circumferential surface 12g of the valve body 12. The outer circumferential surface 12g of the valve body 12 is provided with a recess part 12j. The recess part 12j guides refrigerant flowed from a valve hole 11h to a valve chamber 16 through the clearance when the valve body 12 opens the valve hole 11h by passing the refrigerant through inside of the recess part 12j. A position of a part located at the lowest bottom part 13b of a communication window 15 in a direction where the valve body 12 is moved toward or away from a valve seat 11 is defined as a window bottom position Pb. If a position of a part located at the most nearest position of the valve seat 11 in the recess part 12j is defined as the bottom dead center position Pm when the valve body is moved away most from the valve seat in a valve opening direction, the window bottom part position Pb is located at the bottom part 13b of the valve housing 13 rather than the bottom dead center position Pm.</p> |
