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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.:

US 11028524 B1

PDFFull Text
Date of Patent:
Jun. 08, 2021

Filed:

Sep. 11, 2017

Positive-negative-rotation fan for clothes dryer, and clothes dryer

Applicant:

Qingdao Haier Washing Machine Co., Ltd., Shandong, CN;

Inventors:

Jindong Bing, Shandong, CN;

Rongfeng Cheng, Shandong, CN;

Tao Li, Shandong, CN;

Assignee:

QINGDAO HAIER WASHING MACHINE CO., LTD., Shandong, CN;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Richard A Edgar

Assistant Examiner:

Jackson N Gillenwaters

Int. Cl.
CPC ...
D06F 58/30 (2020.01); F04D 17/10 (2006.01); F04D 29/22 (2006.01); F04D 29/48 (2006.01); F04D 29/30 (2006.01); F04D 29/42 (2006.01); D06F 58/20 (2006.01); D06F 58/02 (2006.01); F04D 29/28 (2006.01); D06F 103/00 (2020.01); D06F 103/34 (2020.01); D06F 103/36 (2020.01); D06F 103/44 (2020.01); D06F 105/24 (2020.01); D06F 105/46 (2020.01);
U.S. Cl.
CPC ...
D06F 58/30 (2020.02); D06F 58/02 (2013.01); D06F 58/20 (2013.01); F04D 17/10 (2013.01); F04D 29/22 (2013.01); F04D 29/281 (2013.01); F04D 29/30 (2013.01); F04D 29/422 (2013.01); F04D 29/483 (2013.01); D06F 2103/00 (2020.02); D06F 2103/34 (2020.02); D06F 2103/36 (2020.02); D06F 2103/44 (2020.02); D06F 2105/24 (2020.02); D06F 2105/46 (2020.02);
Abstract

A positive-negative-rotation fan for a clothes dryer comprises multiple whole-size fan blades arranged on a periphery of an outer frame of the fan, and multiple half-size fan blades arranged on the periphery of the outer frame of the fan. The half-size fan blades and the whole-size fan blades have similar shapes, and the size of an edge of each half-size fan blade parallel to a radial direction of the fan is half of the size of a corresponding edge of the whole-size fan blade. The clothes dryer using the positive-negative-rotation fan can provide an even and great air volume and a great air intake pressure in a clockwise and counterclockwise alternating rotation process, and accordingly clothes are evenly dried and the drying time is short. By using a flow guide device, aggregated back-flows are not generated between the fan and an outlet of a volute.

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