| 摘要 |
PROBLEM TO BE SOLVED: To provide a channel switching valve capable of improving durability by securing sufficient strength to withstand a high pressure, surely and promptly switching channels, and being incorporated in a heat pump type heating/cooling system and the like under high temperature and high pressure environment.SOLUTION: A channel switching valve includes a main valve including a main valve housing and a main valve element rotatably disposed in the main valve housing, and a hydraulic pressure actuator for rotating the main valve element, and switches channels by rotating the main valve element. The actuator has a main body portion provided with an operation chamber 55 to which a high-pressure fluid to be supplied to the main valve is introduced, at an end face side of the main valve housing. A pressure reception moving body 60A movable in a direction vertical to a rotating axis of the main valve element is accommodated in the operation chamber 55, and a motion converting mechanism 58 for converting a reciprocating linear motion of the pressure reception moving body utilizing a pressure of the high-pressure fluid into a rotating motion in both forward and backward directions of the main valve element is disposed therein.SELECTED DRAWING: Figure 17 |
