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(11) | EP 2 241 830 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Outdoor unit of air conditioner |
| (57) There is provided an outdoor unit in which high operation reliability is ensured
by cooling a heat sink having heat radiation fins effectively, and preventing damages
of a power module due to heat. An outdoor unit 1 includes a partition plate 3 provided
upright so as to extend from a bottom plate 2 of the outdoor unit 1 to halfway to
a top thereof; an electric component box 14 placed on the partition plate 3 and configured
to divide the interior of the outdoor unit into a machinery chamber M and a heat exchanger
chamber H in cooperation with the partition plate; an electronic substrate 13 stored
in the electric component box; a compressor 4 provided in the machinery chamber; a
propeller fan 6 and a heat exchanger 5 provided in the heat exchanger chamber; in
which an electric component partition plate 15 configured to divide the interior of
the electric component box and the heat exchanger chamber is inclined so that an extended
line thereof toward a front surface of the outdoor unit intersects a line of projection
of a front edge of a vane 12 of the propeller fan, the electronic substrate is fixed
to the electric component partition plate, a heat sink 17 being in contact with the
back side of the electronic substrate is fixed to extend in parallel to the electric
component partition plate, a plurality of heat radiation fins 16 are formed on one
surface of the heat sink so as to project therefrom toward the heat exchanger chamber
and extend in parallel to a flow of air on the electric component partition plate.
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