The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2023
Filed:
Apr. 26, 2019
Gd Midea Air-conditioning Equipment Co., Ltd., Foshan, CN;
Midea Group Co., Ltd., Foshan, CN;
Yutai Huang, Foshan, CN;
Xujie Cai, Foshan, CN;
Yushi Li, Foshan, CN;
Bo Wang, Foshan, CN;
Hejie Zhou, Foshan, CN;
GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Foshan, CN;
MIDEA GROUP CO., LTD., Foshan, CN;
Abstract
An axial-flow impeller includes a hub and blades. A tail edge of one blade has recessed portions successively arranged in a direction from a blade root of the blade to an outer edge of the blade. On a reference projection of the impeller on a reference plane perpendicular to a rotation axis of the impeller, a first connection line connects a starting point of a first recessed portion closest to the blade root and an end point of a second recessed portion closest to the outer edge, a second connection line connects a tail edge point of the blade root and the end point of the second recessed portion, one or more of the recessed portions is each partially located at a front-edge side of the second connection line, and remaining one or more of the recessed portions is each completely located between the first and second connection lines.