Blower of hand dryer

A blower of a hand dryer, comprising:

• an air flow generation module, which is an integrated structure, comprising an air case, an electric motor and a control circuit board, the air case, the electric motor and the control circuit board being sequentially arranged along an extension line, the air case comprising an air inlet located on the extension line and an air outlet gap defined by the electric motor and the air case;
• and
• a blower housing, comprising a first half shell, a second half shell assembled with the first half shell, and an air guiding cover assembled with the first half shell and the second half shell, the air flow generation module being provided in the first half shell and the second half shell, the first half shell comprising an air intake facing the air inlet, the second half shell comprising a first sub-shell assembled with the first half shell and a second sub-shell capable of being separated with the first sub-shell, the first sub-shell forming a ventilation space communicating the air outlet gap with the air guiding cover, the first sub-shell comprising an opening, wherein the opening is provided for installing the air flow generation module therethrough and exposing the control circuit board outside of the first sub-shell, the second sub-shell is mounted on the opening, and the control circuit board is exposed and replaceable when the second sub-shell is separated with the first sub-shell.