Main Valve Seat and Four-Way Valve

Abstract

Disclosed is a main valve seat. The main valve seat includes a first straight side, a cambered side, a second straight side, and a bottom side on a radial section of the main valve seat, wherein two ends of the cambered edge are connected to a first end of the first straight side and a first end of the second straight side respectively, and two ends of the bottom side are connected to a second end of the first straight side and a second end of the second straight side respectively; the first straight side and the second straight side are positioned in a circle in which the cambered side is positioned; and α denotes an inner angle between the first straight side and the bottom side, β denotes an inner angle between the second straight side and the bottom side, α<90°, and β<90°. Further disclosed is a four-way valve.

Dependencies are inferred from the claim text.