The invention belongs to the field of labor protection and
air purification and relates to a portable air purifying method and device. According to the air purifying method, polluted air is sucked by a draught fan to enter an airtight chamber and is purified through an
air filter element, then the purified air is transmitted to the
nose of a user through a wearable air duct, the
air filter element can be replaced, an extra protective cover can be arranged on a
nose air jet hole, and thus it is guaranteed that a user can wear the device conveniently and enjoy clean air in daily activities, work and body building. According to the air purifying method and device, a minitype
air purifier and the wearable air duct are combined for the first time, the wearable cordwood
air purifier is provided, carrying and wearing are convenient, the
filter element is small, replacement is convenient, the problems that according to a traditional
mask, breathability is unavailable and filtering materials are wasted are avoided, and the situation that an existing portable air purifying device is not suitable for exercise is also avoided.