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Fluid flow apparatus, fan assembly and associated method
US9995305B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9995305-B2 |
| Application number | US-201414505526-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2014 |
| Priority date | Oct 8, 2013 |
| Publication date | Jun 12, 2018 |
| Grant date | Jun 12, 2018 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A fluid flow system is provided. The system includes a rotation producing device, a first fluid flow device coupled to the rotation producing device and a second fluid flow device coupled to the rotation producing device and spaced from the first fluid flow device.
First claim
Opening claim text (preview).
What is claimed is: 1. A fan, comprising: a first axial flux motor having a first axial flux motor rotor and a first axial flux motor stator; a first plurality of fan blades coupled to said first axial flux motor; a second axial flux motor having a second axial flux motor rotor and a second axial flux motor stator, said second axial flux motor including an operating mode to free wheel when said first motor is energized; and a second plurality of fan blades coupled to the second axial flux motor and spaced from the first plurality of fan blades, the second axial flux motor stator spaced from the first axial flux motor stator, wherein said second axial flux motor includes a generator to absorb the energy transferred from the first plurality of fan blades to the second plurality of fan blades when the second plurality of fan blades is freewheeling while the said first axial flux motor rotates the first plurality of fan blades. 2. The fan in accordance with claim 1 , wherein the first plurality of fan blades comprises blades of a first diameter and the second plurality of fan blades comprises blades of a second diameter, substantially different from the blades of first fluid flow device. 3. The fan in accordance with claim 1 : wherein the first plurality of fan blades defines a first axis of rotation and a first center of mass; and wherein the second plurality of fan blades defines a second center of mass, spaced from the first center of mass. 4. The fan in accordance with claim 1 , wherein at least one of said first axial motor and said second axial flux motor is an electronically commutated motor.
Assignees
Inventors
Classifications
Ceiling fans · CPC title
multistage fans · CPC title
by means of resonance chambers or interference · CPC title
- F04D19/024Primary
with contrarotating parts · CPC title
Axial flow fans · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9995305B2 cover?
- A fluid flow system is provided. The system includes a rotation producing device, a first fluid flow device coupled to the rotation producing device and a second fluid flow device coupled to the rotation producing device and spaced from the first fluid flow device.
- Who is the assignee on this patent?
- Regal Beloit America Inc, Regal Beloit Australia Pty Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04D19/024. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 12 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).