PROBLEM TO BE SOLVED: To provide a dust collector configured by combining units for each function.SOLUTION: A dust collector 10 includes a dust collecting unit 14 and a blowing unit 16 from among a plurality of functional units. The dust collecting unit 14 includes: a housing 20 for dust collection provided with a pair of openings 20a and 20b and a dust collecting filter 22 provided inside the housing 20 for dust collection in the middle of a dust collecting route 21 whose both ends are the pair of openings 20a and 20b. The blowing unit 16 includes: a housing 40 for blowing provided with a pair of openings 40a and 40b and a blower 42 provided inside the housing 40 for blowing in the middle of a blowing route 41 whose both ends are the pair of openings 40a and 40b, and generating an air flow. In a ventilation route 11 from an air intake 12 to an exhaust port 13, a plurality of functional units are attached in such a way that the dust collecting route 21 is interposed on the side of the air intake 12, the blowing route 41 is interposed on the side of the exhaust port 13 and they are communicated.
