An outdoor unit of an air conditioner is provided. The outdoor unit includes a base assembly defining a lower exterior of the outdoor unit and supporting a plurality of parts, left and right panels that are provided on the base assembly to define left and right exteriors of the outdoor unit, a pair of top panels that are provided between upper ends of the left and right panels to define a top exterior of the outdoor unit, a blower assembly including a blower fan generating air current and a motor providing a torque to the blower fan, a frame assembly supporting the blower assembly and including a pair of transverse supports interconnecting the left and right panels and a motor mount disposed between the pair of transverse supports to support the motor, and a shroud enclosing the blower fan and the motor and guiding airflow generated by the blower fan. The motor mount is received to an inside of the shroud.

Outdoor unit of air conditioner

An outdoor unit for an air conditioner has an axial-flow fan and a bell mouth. The axial-flow fan is constructed by arranging blades at predetermined intervals along the outer periphery of a hub, each of the blades being formed such that the outline of its rear edge relative to the rotational direction is recessed toward its front edge. The bell mouth is provided on the side of air blow by the axial-flow fan. An axial-flow blower is provided in the outdoor unit. The bell mouth and the axial-flow fan are arranged in the axial-flow blower such that a ratio X/L is in the range of 0.2-0.8 with X being the distance between that portion of the blade’s rear edge outline that is most deeply inwardly recessed in the rotating direction and an air outflow surface of the bell mouth, L being the axial length of bell mouth.

Outdoor unit for air conditioner

Outdoor unit (10) for a heat pump comprising a refrigerant circuit, the outdoor unit (10) comprising a casing (11), a fan (50) accommodated in the casing, the fan (50) having fan blades (55) rotatable about an axis of rotation (56), a grille (100) covering the fan blades (55), characterized in that at least an outer surface (101) of the grille is outwardly curved; the grille (100) is divided into a first area (A1) and a second area (A2), the first area (A1) being defined so that the distance (D) between the fan blades (55) and the outer surface (101) of the grille (100) is not more than a first threshold, and the second area (A2) being defined so that the distance (D) between the fan blades (55) and the outer surface (101) of the grille (100) is larger than the first threshold, wherein openings (102) are formed in the first (A1) and second (A2) areas of the grille (100), a smallest dimension of each of the openings (102) in the first area (A1) perpendicular to the axis of rotation (56) of the fan blades (55) is not more than a second threshold and a smallest dimension of at least some of the openings (102) in the second area (A2) perpendicular to the axis of rotation (56) of the fan blades (55) is larger than the second threshold.

Outdoor unit for a heat pump having a grille with openings of differents dimensions

PURPOSE:To reduce noises and blast resistance by improving a construction of a bell mouth and a supply grille CONSTITUTION:A bellmouth 21 arranged to surround a fan 7 in a casing comprises a ring portion 22 which is substantially semi-circular or quarter- circular in cross section and to which an outlet of the casing is opened, a cylindrical portion 23 provided integrally and continuously from inside of the ring portion 22 to the opening side thereof, and a support plate 25 having a curved portion 24 which is joined to the cylindrical portion 23 and diverges gradually A spacing, depth or width of lattice-shaped frames of a supply grille 15 provided on the outlet of the casing is set to be greater on an outer peripheral side than a central portion of the fan

Yamaguchi Toru

Papers

Outdoor unit for air conditioning apparatus