Axial fan and outdoor unit including the same
US-10578320-B2 · Mar 3, 2020 · US
Propeller fan, air-conditioning apparatus and ventilator
US2019293091A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019293091-A1 |
| Application number | US-201916437190-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 11, 2019 |
| Priority date | Jul 1, 2016 |
| Publication date | Sep 26, 2019 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
1 - 4 . (canceled) 5 . 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. 6 . The propeller fan of claim 5 , wherein the notch in the first area has a width which is greater than a width of each of the plural notches in each of the first sub-area and the second sub-area. 7 . The propeller fan of claim 5 , wherein the notch in the first area has a depth which is greater than a depth of each of the plural notches in each of the first sub-area and the second sub-area. 8 . The propeller fan of claim 5 , wherein a sum of a width of the first sub-area in a radial direction of the propeller fan and a width of the second sub-area in the radial direction is greater than or equal to a width of the first area in the radial direction. 9 . The propeller fan of claim 5 , wherein the first area is located outward of an intermediate portion of the blade in a radial direction of the propeller fan. 10 . The propeller fan of claim 5 , wherein the notch in the first area, the plural notches in the first sub-area and the plural notches in the second sub-area are continuously formed along the trailing edge. 11 . An air-conditioning apparatus comprising the propeller fan of claim 5 . 12 . A ventilator comprising the propeller fan of claim 5 .
Assignees
Inventors
Classifications
related to the trailing edge of a rotor blade · CPC title
- F04D29/384Primary
characterised by form · CPC title
Sound attenuation · CPC title
characterised by construction · CPC title
- F04D29/666Primary
by means of rotor construction or layout, e.g. unequal distribution of blades or vanes · CPC title
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Frequently asked questions
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- What does patent US2019293091A1 cover?
- 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 …
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification F04D29/384. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Sep 26 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).