VENTILATOR AND AIR CONDITIONER

摘要

The present invention provides an air conditioner that can send in outdoor air to an indoor space, and can effectively discharge indoor air to the outside. The air conditioner comprises an air supply and discharge line (7), a humidification fan (70), and a switching damper (90). The air supply and discharge line (7) connects an indoor space with an outdoor space. The fan (70) has an air intake port and an air discharge port. The switching means (90) can switch between a first and a second state. The first state is one in which the air discharge port of the humidification fan (70) communicates with the air supply and discharge line (7). The second state is one in which the air intake port of the humidification fan (70) communicates with the air supply and discharge line (7).