This air conditioner is based on the concept of mixed air. When it is running, negative pressure is generated around the air outlet. In this way, ambient air is taken into this area, which is then uniformly mixed with the air released from the device. The result is well-tempered airflow that fulfils the purpose of air conditioning yet still feels comfortable to the resident. This overcomes the problem of being subjected to airflow that is too cold, particularly in the summertime.