	US 12,267,983 B2
	Impeller, fan and electronic device
Hsiu-Wei Wu, Guangdong (CN); En-Yu Lin, Guangdong (CN); and Zhongqi Zhou, Guangdong (CN)
Assigned to STONEPLUS THERMAL MANAGEMENT TECHNOLOGIES LIMITED, Shenzhen (CN)
Filed by StonePlus Thermal Management Technologies Limited, Guangdong (CN)
Filed on Feb. 8, 2024, as Appl. No. 18/436,716.
Claims priority of application No. 202322853783.5 (CN), filed on Oct. 23, 2023.
Prior Publication US 2024/0244788 A1, Jul. 18, 2024
Int. Cl. H05K 7/20 (2006.01); F04D 17/00 (2006.01); F04D 29/28 (2006.01); F04D 29/66 (2006.01)

CPC H05K 7/20136 (2013.01) [F04D 17/00 (2013.01); F04D 29/281 (2013.01); F04D 29/666 (2013.01)]

16 Claims

1. An impeller comprising:

a fan hub; and

a plurality of blades, the blades being positioned at intervals around the fan hub and arranged in a circular array, the blades extending radially outward from the fan hub, two opposite ends of each of the blades being a root portion and a head portion respectively, all root portions of the blades being connected to a peripheral side of the fan hub, all head portions of the blades being located on a same circle, every two adjacent blades of said blades being different in length in a longitudinal direction from the root portion thereof to the head portion thereof;

wherein one of the two adjacent blades is straight, and the other of the two adjacent blades is curved;

an outlet is defined between the head portions of every two adjacent blades of said blades, and any two adjacent outlets are different in width in a circumferential direction;

the blades comprise three types of blades including a first blade, a second blade and a third blade arranged sequentially along the circumferential direction of the fan hub, a length of the first blade is greater than that of the second blade, a length of the third blade is less than that of the second blade, a narrowest outlet is defined between the first blade and the second blade, and a widest outlet is defined between the second blade and the third blade.