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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 11933309 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

Jul. 22, 2022

Method of starting a fan using an open loop starting stage with a decreasing drive signal value

Applicant:

Delta Electronics, Inc., Taoyuan, TW;

Inventors:

Yi-Fan Lin, Taoyuan, TW;

Chung-Hung Tang, Taoyuan, TW;

Cheng-Chieh Liu, Taoyuan, TW;

Chun-Lung Chiu, Taoyuan, TW;

Assignee:

DELTA ELECTRONICS, INC., Taoyuan, TW;

Attorney:

Muncy, Geissler, Olds & Lowe, P.C.

Primary Examiner:

Nathan C Zollinger

Assistant Examiner:

Timothy P Solak

Int. Cl.
CPC ...
F04D 19/00 (2006.01); F04D 25/06 (2006.01); F04D 27/00 (2006.01); F04B 49/02 (2006.01); F04B 49/06 (2006.01); F04B 49/20 (2006.01); F04D 17/16 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 19/002 (2013.01); F04D 25/06 (2013.01); F04D 27/004 (2013.01); F04B 49/02 (2013.01); F04B 49/06 (2013.01); F04B 49/065 (2013.01); F04B 49/20 (2013.01); F04D 17/16 (2013.01); F04D 29/661 (2013.01); F05D 2260/85 (2013.01);
Abstract

A method for controlling a fan in a fan start-up stage including a first time period and a second time period comprises the following steps of: during the first time period, continuously providing a first driving signal to drive the fan; and during the second time period, continuously providing a second driving signal to drive the fan; wherein, the signal value of the first driving signal gradually decreases until being equal to the signal value of the second driving signal. Wherein the signal value of the first driving signal non-linearly decreases, the signal value of the second driving signal is an unchanged value. Wherein, the first time period and the second time period are adjusted for a different fan but the sum of the first time period and the second time period is always the same. A fan is also disclosed.

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