Patent ID: 8713961
Filing Date: 2014-05-06
Classification: F24F,F28D

Abstract:
1. An outdoor unit comprising: a housing that is vertically partitioned into a heat exchange chamber and a machine chamber by a partition plate; a heat exchanger and an air blower that are mounted in the heat exchanger chamber; and a compressor and an electrical component box that are mounted in the machine chamber, wherein: the electrical component box comprises: the main body portion and the protrusion portion are joined to each other so as to form an air flowing path for sucking cooling air from a back surface side of the machine chamber, branching the cooling air into first cooling air and second cooling air so that the second cooing air directly flows to an entrance of the heat sink of the second electrical component unit to cool the heat sink and the first cooling air passes over the electrical parts of the first electrical component unit to cool the electrical parts and then converges with the first cooling air at the entrance of the heat sink, and then discharging the first cooling air and the second cooling air to a negative pressure side of the air blower in the heat exchange chamber, the main body portion has a first electrical component unit support plate that extends in a width direction of the machine chamber and supports the first electrical component unit at a front surface side thereof, the protrusion portion has a second electrical component unit support plate for supporting the second electrical component unit at a front surface side thereof and also supporting the heat sink at a rear surface side thereof, and the second electrical component unit support plate is disposed separately, without touching the first electrical component unit support plate, and a space is formed between the first and second electrical component unit support plates, so that the first cooling air flows through the space to the heat sink at the rear surface side.