Patent ID: 6908069

Claim:
A fluid valve apparatus comprising: a base body having a fluid intake through which fluid flows in, a fluid outlet through which fluid is discharged, and a valve accommodation chamber formed between said fluid intake and said fluid outlet; a cylindrical valve accommodated movably in said valve accommodation chamber in said base body; and a driving portion for moving said cylindrical valve in a direction for adjusting the opening degree of said cylindrical valve, said cylindrical valve including: an outer peripheral wall face which forms an outer peripheral flow path in said cylindrical valve so that fluid flows from said fluid intake to said fluid outlet; an inner peripheral wall face which forms an inner peripheral flow path in said cylindrical valve so that fluid flows from said fluid intake to said fluid outlet; a first valve section which forms a first valve flow path with a first valve receiving section of said base body so that fluid flows through one of said outer peripheral flow path and said inner peripheral flow path; and a second valve section which forms a second valve flow path with a second valve receiving section of said base body so that fluid flows through the other of said outer peripheral flow path and said inner peripheral flow path, wherein said cylindrical valve is moved by said driving portion so as to change flow path areas of said first valve flow path and said second valve flow path thereby changing the quantity of fluid flowing through the outer peripheral flow path and fluid flowing through the inner peripheral flow path of the cylindrical valve.