Abstract: In an outdoor unit having a housing containing a heat exchange chamber and a machine chamber vertically partitioned by a partition plate, an electrical component box includes a main body portion disposed in the machine chamber and having a first electrical component unit, and a protrusion portion protruding from the machine chamber into the heat exchange chamber and having a second electrical component unit. The main body portion and the protrusion portion are joined to form an air flowing path for sucking cooling air from the back surface side of the machine chamber, branching the cooling air into first cooling air directly flowing to the sink tank and second cooling air passing over electrical parts of the first electrical component unit and then converging with the first cooling air at the entrance of the sink tank.

Abstract: A conical-shaped distributing member 41 is disposed in a refrigerant distributing portion 32 distributing refrigerant, an orifice 34 is disposed by being positioned at an axis 16X of the conical body, the orifice 34 is held by a stop ring 37, and the stop ring 37 urges the orifice 34 in a flow direction of the refrigerant.

Abstract: In an outdoor unit having a housing containing a heat exchange chamber and a machine chamber vertically partitioned by a partition plate, an electrical component box includes a main body portion disposed in the machine chamber and having a first electrical component unit, and a protrusion portion protruding from the machine chamber into the heat exchange chamber and having a second electrical component unit. The main body portion and the protrusion portion are joined to form an air flowing path for sucking cooling air from the back surface side of the machine chamber, branching the cooling air into first cooling air directly flowing to the sink tank and second cooling air passing over electrical parts of the first electrical component unit and then converging with the first cooling air at the entrance of the sink tank.

Abstract: A conical-shaped distributing member 41 is disposed in a refrigerant distributing portion 32 distributing refrigerant, an orifice 34 is disposed by being positioned at an axis 16X of the conical body, the orifice 34 is held by a stop ring 37, and the stop ring 37 urges the orifice 34 in a flow direction of the refrigerant.