OUTDOOR UNIT FOR AIR CONDITIONER

摘要

An outdoor unit (1) for an air conditioner, having improved COP and periodic electric power consumption of the air conditioner, which is achieved by reducing an input to a fan motor of the outdoor unit to enhance static pressure efficiency. The outdoor unit (1) has two propeller fans (5, 6) for promoting heat exchange and rotating in opposite directions to each other, a fan motor (7) for rotating the upwind propeller fan (5) of the two propeller fans, and a reversing mechanism (8) for reversing the rotation direction of the fan motor (7) and transmitting the reversed rotation. The downwind propeller fan (6) is provided coaxial with and on the downstream side of the upwind propeller fan (5) and is reversely rotated by the reversing mechanism (8). The upwind and downwind propeller fans (5, 6) have blade shapes whose chords are bent in the opposite directions and that are line symmetrically formed when viewed from the axis direction. The fans (5, 6) are rotated in the opposite directions from each other but produce airflow in the same direction.