Power conversion device

A power conversion device comprising:

• a power conversion unit to convert an input power and output the converted power;
• a reactor connected to an input side of the power conversion unit;
• a controller to control electronic components included in the power conversion unit;
• a first unit, an interior of a housing thereof being divided by a partition into a closed section into which outside air does not flow and an open section into which the outside air flows, the closed section containing the electronic components, the first unit comprising a heat sink exposed to the open section and releasing heat transferred from the electronic components;
• a second unit, an interior of a housing thereof being divided into a first space and a second space by a partition having an opening, the second unit being adjacent to the first unit, the second unit containing in the first space a blower for blowing air from the second space toward the first space, the blower having an impeller at least partially exposed to the second space from the opening;
• and
• a third unit adjacent to the second unit and containing the reactor,
• wherein a first vent is formed in a part at which a housing forming the open section contained within the first unit and a housing forming the second space contained within the second unit contact each other,
• a flow inlet into which the outside air flows is formed in the housing forming the open section contained within the first unit,
• a second vent is formed in a part at which a housing forming the first space contained within the second unit and a housing of the third unit contact each other, and
• a flow outlet is formed in the housing of the third unit and discharges air flowing in from the second vent.