Patent ID: 8466362

Claim:
A dual rotor axial-flow rotor valve structure comprising: a rotor valve seat having a receiving space, the receiving space having a first opening and a second opening opposite to the first opening, the first and second openings communicating with external side, a first extension section and a second extension section being disposed on a circumference of the rotor valve seat in communication with the receiving space; a first rotor valve pivotally rotatably disposed in the receiving space of the rotor valve seat on one side proximal to the first opening, a first flow passage and a second flow passage being independently disposed on the first rotor valve, one end section of the first flow passage and one end section of the second flow passage being formed on one side of the first rotor valve, which side is directed to the first opening, the other end section of the second flow passage being directed to inner circumference of the rotor valve seat, whereby the first rotor valve can be pivotally rotated to selectively communicate the second flow passage with one of the first and second extension sections; and a second rotor valve pivotally rotatably disposed in the receiving space of the rotor valve seat on one side proximal to the second opening, a first flow passage and a second flow passage being independently disposed on the second rotor valve, one end section of the first flow passage and one end section of the second flow passage being formed on one side of the first rotor valve, which side is directed to the second opening, the first flow passage of the second rotor valve communicating with the first flow passage of the first rotor valve, the other end section of the second flow passage of the second rotor valve being directed to the inner circumference of the rotor valve seat, whereby the second rotor valve can be pivotally rotated to selectively communicate the second flow passage with one of the first and second extension sections.