The invention provides a constant-temperature, constant-
humidity and constant-cleanliness silent
indoor air system, belongs to the field of indoor intelligent adjustment, and relates to multiple techniques including
indoor air pressure control,
indoor air purification, an indoor central dedusting
system, supercharging and compensation functions for interlayers of double windows and double
doors, an outdoor
haze isolating
system, an indoor air internal-circulation cleaning method, air heat exchange,
air heating,
refrigeration, dehumidification and the like. According to the constant-temperature, constant-
humidity and constant-cleanliness silent indoor air system, the pressure of
fresh air is made positive through the interlayers of the double
doors and the double windows, the air pressure in the interlayers of the double
doors and the double windows is made higher than outdoor air pressure, and outdoor air is prevented from invading indoor air; a small primary-efficiency, medium-efficiency and high-efficiency filtering system is used for
filtration, various types of automatic adjustment and control including heating, refrigerating, dehumidifying and the like are conducted on air,
pollutant dust generated indoors is removed through the central dedusting system, and the constant-temperature, constant-
humidity and constant-cleanliness silent indoor air system is an omnidirectional intelligent air
control system.