Patent ID: 8091380

Claim:
A motor-operated selector valve, characterized by comprising: a valve chamber ( 25 ), wherein a valve seat ( 30 ) provides with a normal open inlet (A) and a flat bottom surface ( 36 a ), a first outlet (B), a second outlet (C) and a third outlet (D) are provided in sequence in the flat bottom surface ( 36 a ); a magnetic-rotor component ( 32 ) which is disposed within the valve chamber ( 25 ) and rotatablely displaced under a driving force; a slider ( 35 ) which is disposed within the valve chamber ( 25 ) and moved along with the magnetic rotor component ( 32 ), wherein the slider ( 35 ) hermetically abuts against said flat bottom surface ( 36 a ); and a coil component ( 22 ) for providing said driving force, wherein the coil component ( 22 ) together with the magnetic rotor component ( 32 ) constitutes a stepper motor that controls the rotary displacement of said slider ( 35 ) among four working positions on the flat bottom surface ( 36 a ), and corresponding to each of the four working positions, the three outlets are communicated with the normal open inlet (A) respectively via flow-guiding orifices provided in said slider ( 35 ), said flow-guiding orifices are two spaced communicating passageways ( 35 b 1 , 35 b 2 ) provided in the slider, one of said two communicating passageways ( 35 b 1 , 35 b 2 ) communicates the normal open inlet (A) with one of said three outlets (B, C, D), said two communicating passageways ( 35 b 1 , 35 b 2 ) are configured to achieve said four working positions including: a first working position, in which the first outlet (B) and the third outlet (D) are in communication with said two communicating passageways ( 35 b 1 , 35 b 2 ), respectively, and the first outlet (B) and the third outlet (D) are in communication with the normal open inlet (A) at the same time, the second outlet (C) is closed; a second working position, in which the second outlet (C) is in communication with one ( 35 b 1 ) of the communicating passageways, and the second outlet (C) is in communication with the normal open inlet (A), and the first outlet (B) and the third outlet (D) are both closed; a third working position, in which the third outlet (D) is in communication with one ( 35 b 1 ) of the communicating passageways, and the third outlet (D) is in communication with the normal open inlet (A), and the first outlet (B) and the second outlet (C) are both closed; a fourth working position, in which the first outlet (B) is in communication with the other communicating passageway ( 35 b 2 ), and the first outlet (B) is in communication with the normal open inlet (A), and the second outlet (C) and the third outlet (D) are both closed.