FOUR-WAY SELECTOR VALVE

摘要

PROBLEM TO BE SOLVED: To improve the reliability of a selector valve by improving the easiness in switching refrigerant channels and the alterness, and simplifying the constitution and operation. SOLUTION: This four-way selector valve comprises a motor part 10 composed of a stator 20 and a rotor 40, a case 30, a main valve 70 mounted in a valve chamber 73 in the case, and a valve body 50. The valve body 50 comprises an intake pressure conduction hole 54, a discharge pressure conduction hole 55, and two conduction holes 56, 57. The main valve 70 comprises a communicating part 74 for selectively communicating the intake pressure conduction hole and two conduction holes, and a pressure equalizing hole 77 communicating the communication part and the valve chamber. A sub-valve 60 interlocking with the rotation of the rotor is mounted on the main valve. The sub-valve is provided with two pressure equalizing hole closing parts 63 for moving and stopping the pressure. The pressure equalizing hole is closed by one of two pressure equalizing hole closing parts by the rotation of the sub-valve. The main valve is moved to switch the conduction hole in a closed condition of the pressure equalizing hole. The sub-valve is provided with a curved hole 64 for freely fitting a main valve interlocking rod 72 mounted on a main valve side, and the main valve is rotated when the sub-valve is rotated by more than a predetermined amount by the rotation of the rotor.