| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a variable orifice device capable of enlarging a usable temperature range and obtaining desired performance even under an environment of sharp temperature drop, while surely avoiding a situation where the valve seat equivalent portion or the like of a narrowing passage is deformed.SOLUTION: A valve body 20 is divided into a trunk part 21 and a base end part 23. A compression coil spring 27 is interposed as a bias buffer member between the trunk part 21 and the base end part 23. In order that a valve body part 25 and a valve seat 15 are kept at normal flow rate adjustment positions, as a stopper mechanism 30A, a stationary locking part 35 is provided on the side of the base end part 23, and a contact hooking part 33 is provided on the side of the trunk part 21.</p> |
