Outdoor unit of air conditioner

An outdoor unit of an air conditioner, comprising:

• a housing including an inlet and an outlet, wherein a flow path is formed between the inlet and the outlet inside the housing;
• a heat exchanger inside the housing;
• and
• a blower fan inside the housing between the inlet and the heat exchanger, and configured to flow air along the flow path, from the inlet, through the heat exchanger, and toward the outlet,
• wherein the blower fan includes:
• a rotating shaft,
• a hub configured to be rotatable about the rotating shaft, and
• a plurality of blades extending from the hub and arranged along a circumference of the hub, and
• each blade among the plurality of blades includes:
• an inner end connected to an outer circumferential surface of the hub;
• an outer end at an outer edge in a direction which each blade extends from the hub,
• a leading edge at a first side of a blade facing a rotation direction of the hub, the leading edge extending in a direction away from the rotating shaft, from a first end of the inner end in the rotation direction of the hub to a first end of the outer end in the rotation direction of the hub,
• a trailing edge at a second side of the blade opposite to the first side of the blade, the trailing edge extending in a direction away from the rotating shaft, from a second end of the inner end opposite to the first end of the inner end to a second end of the outer end opposite to the first end of the outer end, and
• a blade surface between the leading edge and the trailing edge and inclined toward the inlet from the trailing edge to the leading edge,
• wherein a distance between the first end of the inner end and the inlet is smaller than a distance between the second end of the inner end and the inlet,
• wherein a distance between the first end of the outer end and the inlet is smaller than a distance between the second end of the outer end and the inlet, and
• wherein the leading edge is inclined at an angle of inclination of an extension direction of the leading edge with respect to a radial direction of the hub, and the angle of inclination of the leading edge is greater than an angle of inclination of an extension direction of the trailing edge which is inclined with respect to the radial direction of the hub.

An outdoor unit of an air conditioner, comprising:

• a housing including an inlet and an outlet, wherein a flow path is formed between the inlet and the outlet inside the housing;
• a heat exchanger inside the housing;
• and
• a blower fan inside the housing between the inlet and the heat exchanger, and configured to flow air along the flow path, from the inlet, through the heat exchanger, and toward the outlet,
• wherein the blower fan includes:
• a rotating shaft,
• a hub configured to be rotatable about the rotating shaft, and
• a plurality of blades extending from the hub and arranged along a circumference of the hub, and
• each blade among the plurality of blades includes:
• an inner end connected to an outer circumferential surface of the hub,
• an outer end at an outer edge in a direction which each blade extends from the hub,
• a leading edge at a first side of a rotation direction facing a rotation direction of the hub, the leading edge extending in a direction away from the rotating shaft, from a first end of the inner end in the rotation direction of the hub to a first end of the outer end in the rotation direction of the hub,
• a trailing edge, at a second side of a blade opposite to the first side of the blade, the trailing edge extending in a direction away from the rotating shaft, from a second end of the inner end opposite to the first end of the inner end to a second end of the outer end opposite to the first end of the outer end, and
• a blade surface between the leading edge and the trailing edge and inclined toward the inlet from the trailing edge to the leading edge,
• wherein a distance between the first end of the inner end and the inlet is smaller than a distance between the second end of the inner end and the inlet,
• wherein a distance between the first end of the outer end and the inlet is smaller than a distance between the second end of the outer end and the inlet, and
• wherein an extension length of the leading edge along a radial direction of the hub is longer than an extension length of the trailing edge along the radial direction of the hub.