| 摘要 |
PROBLEM TO BE SOLVED: To provide a four-way valve of high thermal efficiency without bypassing of a refrigerant flow.SOLUTION: A four-way valve A connected with a first flow channel 12 at its upper side, connected with second to fourth flow channels 13, 14, 15 at its lower side, and controlling the flow of a fluid, includes a housing 11 composed of a cylinder portion 16 having the shape formed by air-tightly closing both ends of a cylindrical container and connected to the second to fourth flow channels at its lower side, and a connecting portion 17 positioned at an upper side of the cylinder portion and connected to the first flow channel, the inside of the connecting portion 17 has the shape expanded in the longitudinal direction of the cylinder portion from a first flow channel side toward a cylinder portion side, a valve element 22 is provided to move inside the housing 11 and to switch the flow channels, the valve element 22 is disposed from the cylinder portion 16 to the connecting portion 17, and a wall surface 24 of the valve element 22 and an inner wall surface 18 of the connecting portion 17 are brought into contact with each other to form a flow channel R1 in the connecting portion 17. |
