Indoor air cleaning system

An indoor air cleaning system, comprising:

• a plurality of first gas detectors disposed in an indoor field and an outdoor field for detecting first air pollution information of the indoor field and air pollution information of the outdoor field, wherein the plurality of first gas detectors output the first air pollution information and the air pollution information of the outdoor field through IoT communication;
• at least one circulation back-flow channel surrounded and isolated by several partitions to form on a side of the indoor field, and comprising a plurality of air intakes and a plurality of back-flow vents;
• at least one circulation filter device disposed in the at least one circulation back-flow channel and corresponding to the plurality of air intakes, wherein the at least one circulation filter device comprises a fan, a filter element, a second gas detector and a first driving control element, the second gas detector receives a first control command through IoT communication to the first driving control element to control and actuate an operation of the fan, and the fan is controlled and actuated to guide air pollution for filtering through the filter element and discharging through the plurality of air intakes into the indoor field;
• at least one air conditioning device disposed in the indoor field for temperature and humidity adjustment, and comprising a third gas detector and a second driving control element, wherein the third gas detector receives a second control command through IoT communication to the second driving control element to control and actuate an operation of the at least one air conditioning device, and externally transmit air temperature and humidity information of the indoor field;
• and
• a cloud computing server device receiving the first air pollution information of the indoor field and the air pollution information of the outdoor field through IoT communication for storing to form a database of the air pollution information, the cloud computing server device also receiving the temperature and humidity information outputted from the air conditioning device, comparing by intelligent computing and intelligently selecting according to the database of the air pollution information and the temperature and humidity information to output the first control command to the fan of the at least one circulation filter device for actuation operation, whereby the fan of the at least one circulation filter device generates an internal circulation directional airflow continuously, and the air pollution is guided to pass through the filter element multiple times for filtration, therefore the gas state in the indoor field has suspended particles with a particle size less than 2.5 μm to reach a cleanliness.