Turbo fan and air conditioner including same
First Claim
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1. A turbo fan comprising:
- a main plate rotatably provided around a rotational axis;
a side plate having a suction hole formed in a center thereof, and disposed to be separated from one surface of the main plate in a rotational axial direction; and
at least one blade disposed and fixed between the main plate and the side plate,wherein an outer diameter of the main plate is smaller than an inner diameter of the suction hole when viewed from the rotational axial direction,wherein the at least one blade includes a curved portion inside the inner diameter of the suction hole, the curved portion having a varying curvature along an axis of the at least one blade parallel to the rotational axis inside the inner diameter of the suction hole and a non-varying curvature along the axis of the at least one blade parallel to the rotational axis outside the inner diameter of the suction hole.
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Abstract
Provided is a turbo fan capable of lowering difficulty in manufacturing and contributing an improvement in a reduction of costs while performance related to an improvement in ventilation efficiency, a decrease in operation noise, or the like. The turbo fan includes a main plate rotatably provided around a rotational axis, a side plate having a suction hole formed in a center thereof, and disposed to be separated from one surface of the main plate in a rotational axial direction and a plurality of blades disposed and fixed between the main plate and the side plate. The main plate is located inside the suction hole when viewed from the rotational axial direction.
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Citations
16 Claims
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1. A turbo fan comprising:
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a main plate rotatably provided around a rotational axis; a side plate having a suction hole formed in a center thereof, and disposed to be separated from one surface of the main plate in a rotational axial direction; and at least one blade disposed and fixed between the main plate and the side plate, wherein an outer diameter of the main plate is smaller than an inner diameter of the suction hole when viewed from the rotational axial direction, wherein the at least one blade includes a curved portion inside the inner diameter of the suction hole, the curved portion having a varying curvature along an axis of the at least one blade parallel to the rotational axis inside the inner diameter of the suction hole and a non-varying curvature along the axis of the at least one blade parallel to the rotational axis outside the inner diameter of the suction hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A turbo fan comprising:
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a main plate rotatably provided around a rotational axis; a side plate having a suction hole formed in a center thereof, and disposed to be separated from one surface of the main plate in a rotational axial direction; and at least one blade disposed and fixed between the main plate and the side plate, wherein the main plate is located inside the suction hole when viewed from the rotational axial direction, wherein a cross section of the at least one blade includes a parallel portion configured to extend in the rotational axial direction and a curved portion bent from the parallel portion, wherein a portion of the main plate toward which the curved portion is projected is formed as an opening when viewed from the rotational axial direction, and wherein a convex portion configured to protrude from the main plate is formed between an outer diameter of the opening and an outer diameter of the main plate.
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Specification