Fan guard of blower unit and air conditioner

A fan guard of an air blowing unit comprising:

• a frame (4a) arranged around a perimeter of an air outlet (2a) of a fan (6);
• a plurality of board-shaped ribs (41, 41 . . . ) extending radially from a vicinity of the center of the frame (4a) outward in a direction of a radius of the fan (6);
• and
• a plurality of nearly cylindrical ribs (42, 42 . . . ) which are integrated with the plurality of board-shaped ribs (41, 41 . . . ) and arranged concentrically around a rotation axis (0-0′) of the fan (6) at predetermined intervals in the direction of the radius of the fan (6),
• wherein a line (A) connecting an air inlet end (41a) and an air outlet end (41b) of each of the plurality of board-shaped ribs (41) in a cross section perpendicular to a line (C1) formed by the air outlet end (41b) of each of the plurality of board-shaped ribs (41) is inclined from the rotation axis (0-0′) of the fan (6) by a predetermined angle (θr) of installment in the direction of rotation of the fan (6), and
• a point (P2) at an outer radial end of the air outlet end (41b) of each of the plurality of board-shaped ribs (41) is positioned at a point rotated in the direction of rotation of the fan (6) from a straight line (B) connecting a point (P1) at an inner radial end of the air outlet end (41b) and the rotation axis (0-0′).

A fan guard of an air blowing unit comprising:

• a frame (4a) arranged around a perimeter of an air outlet (2a) of a fan (6);
• and
• a plurality of board-shaped ribs (41, 41 . . . ) extending radially from a vicinity of the center of the frame (4a) outward in a direction of a radius of the fan (6),
• wherein an air outlet end (41b) of each of the plurality of board-shaped ribs (41) in a cross section perpendicular to a line (C1) formed by the air outlet end (41b) of each of the plurality of board-shaped ribs (41) is positioned at a point rotated in the direction of the fan (6) from an air inlet end (41a) of each of the plurality of board-shaped ribs (41) in the cross section perpendicular, and
• a point (P2) on an outer circumference of the air outlet end (41b) of each of the plurality of board-shaped ribs (41) is positioned at a point rotated in the direction of rotation of the fan (6) from a straight line (B) connecting a point (P1) on an inner circumference of the air outlet end (41b) and a rotation center (0) of the fan (6).

A fan guard of an air blowing unit comprising:

• a frame (4a) arranged around a perimeter of an air outlet (2a) of a fan (6);
• a plurality of board-shaped ribs (41, 41 . . . ) extending radially from a vicinity of the center of the frame (4a) outward in a direction of a radius of the fan (6);
• and
• a plurality of nearly cylindrical ribs (42, 42 . . . ) which are integrated with the plurality of board-shaped ribs (41, 41 . . . ) and arranged concentrically around a rotation axis (0-0′) of the fan (6) at predetermined intervals in the direction of the radius of the fan (6);
• wherein an air outlet end (41b) of each of the plurality of board-shaped ribs (41) in a cross section perpendicular to a line (C1) formed by the air outlet end (41b) of each of the plurality of board-shaped ribs (41) is positioned at a point rotated in the direction of the fan (6) from an air inlet end (41a) of each of the plurality of board-shaped ribs (41) in the cross section perpendicular, and
• a point (P2) on an outer circumference of the air outlet end (41b) of each of the plurality of board-shaped ribs (41) is positioned at a point rotated in the direction of rotation of the fan (6) from a straight line (B) connecting a point (P1) on an inner circumference of the air outlet end (41b) and a rotation center (0) of the fan (6).