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:
Nov. 07, 2023
Filed:
May. 13, 2020
Qingdao Haier Drum Washing Machine Co., Ltd., Qingdao, CN;
Haier Smart Home Co., Ltd., Qingdao, CN;
Peishi Lv, Qingdao, CN;
Tao Li, Qingdao, CN;
Jindong Bing, Qingdao, CN;
Rongfeng Cheng, Qingdao, CN;
Long Yang, Qingdao, CN;
QINGDAO HAIER DRUM WASHING MACHINE CO., LTD., Qingdao, CN;
Haier Smart Home Co., Ltd., Qingdao, CN;
Abstract
A centrifugal fan and a clothing dryer. The centrifugal fan includes a housing as well as an impeller and a worm tongue disposed in the housing. The housing has an air inlet and an air outlet. The volute tongue includes a first volute tongue and a second volute tongue that are stacked and staggered. The first volute tongue cuts the air blown from the impeller and guide the air to the air outlet when the impeller rotates forward. The second volute tongue cuts the air blown from the impeller and guide the air to the air outlet when the impeller rotates backward. When the impeller rotates, the first volute tongue or the second volute tongue can cut the air blown from the impeller and guide the air to the air outlet, so that the centrifugal fan can blow out air when the impeller rotates forward and backward.