Propeller fan, air-conditioning apparatus and ventilator
AssigneeMitsubishi Electric Corporation
InventorsSeiji NAKASHIMA, Takuya TERAMOTO, Katsuyuki YAMAMOTO, Yusuke ADACHI
Life of this patent
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Abstract
A propeller fan includes a boss on a rotation axis, and a blade at an outer circumferential portion of the boss. The blade includes a leading edge and a trailing edge. The blade includes a first area, a first sub-area located inward of the first area, and a second sub-area located outward of the first area. The first area includes a notch formed in the trailing edge. Each of the first sub-area and the second sub-area include plural notches formed in the trailing edge. The notch in the first area is larger than each of the plural notches in each of the first sub-area and the second sub-area.
Claims9
1-4. (canceled)
A propeller fan comprising:
- a boss provided on a rotation axis;
- and
- a blade provided at an outer circumferential portion of the boss, the blade including a leading edge and a trailing edge, the blade including a first area, a first sub-area located inward of the first area and a second sub-area located outward of the first area, the first area including a notch formed in the trailing edge, each of the first sub-area and the second sub-area including plural notches formed in the trailing edge, the notch in the first area being larger than each of the plural notches in each of the first sub-area and the second sub-area.
Dependencies are inferred from the claim text.