| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously achieve operation stability of a valve body in a control valve including a plurality of valve parts in series and flow rate security of working fluid flowing in an axial direction of the valve body.SOLUTION: An expansion valve 1 includes a body 2 in which a valve hole 18 is formed on the depth of an attachment hole 32 opened on one side surface; a guide member 36 which is capable of forming a circulation passage for circulating a refrigerant between the body 2 and the guide member itself, and in which a guide hole 23 coaxial with the valve hole 18 is formed and a valve hole 22 is formed coaxially with the guide hole 23 on the opposite side to the valve hole 18; a valve body 38 arranged between the valve hole 18 and the guide member 36 and capable of opening/closing a first valve part by coming into contact with/separating from the valve hole 18; a valve body 44 having a shaft part 46 to be slidably inserted into the guide hole 23, connected to the valve body 38 on the one-end side and capable of opening/closing a second valve part by coming into contact with/separating from the valve hole 22 on the other end side; and an autonomous alignment mechanism which when the valve body 38 sits on a valve seat 34 formed on an aperture end part of the vale hole 18, allows autonomous alignment operation of the valve body 38. |
