Power conversion device
AssigneeMitsubishi Electric Corporation
InventorsHidetoshi Kitanaka, Hidetoshi Sumita, Yu Hirayama
Life of this patent
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Abstract
Electronic components included in a power conversion unit are housed in a closed section of a first unit, and the first unit includes a heat sink exposed to an open section and releases heat transferred from the electronic components. A blower is housed in a first space of a second unit, and at least a portion of an impeller of the blower is exposed to a second space from an opening. A reactor is housed in a third unit. Outside air flows through a flow inlet into an interior of the power conversion device, passes through the open section, a first vent, the second space, the opening, the first space, a second vent, and the third unit, and then is discharged to the exterior of the power conversion device from a flow outlet.
Claims12
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,
- a flow outlet is formed in the housing of the third unit and discharges air flowing in from the second vent, the flow outlet and the second vent facing each other,
- the blower does not comprise a casing and is housed in the second unit,
- the partition of the first unit and the partition of the second unit are horizontal,
- a vertical direction upper part of the first unit is the closed section, and a vertical direction lower part of the first unit is the open section,
- a space of a vertical direction upper part of the second unit is the first space, and a vertical direction lower part of the second unit is the second space, and
- the reactor is received in the third unit such that a central axis of the reactor is aligned with a direction from the second vent to the flow outlet.
Dependencies are inferred from the claim text.