LIQUID REFRIGERANT CIRCULATION PUMP

PROBLEM TO BE SOLVED: To provide a liquid refrigerant circulation pump easily designed and facilitating maintenance management.SOLUTION: A liquid refrigerant circulation pump 1 circulating liquid refrigerant in a refrigeration cycle comprises: pump bodies 2, 8 having a cylindrical gear housing chamber 2a having a bottom part and suction and discharge ports 8c, 8d opening to the gear housing chamber; an outer gear 4 having inner teeth, in slide contact with an inner wall of the gear housing chamber, and rotatably arranged; an inner gear 3 having outer teeth meshed with the inner teeth of the outer gear and having a rotational axial line eccentric from a rotation axial line of the outer gear; a motor 6 rotating the outer gear to discharge the liquid refrigerant from the suction port to the discharge port; and a magnetic coupling 5 connecting the outer gear and a drive shaft 6a of the motor. The motor is detachably provided to the pump body.