Invention Grant
US09021876B2 Method and apparatus for determining change in mass of fan impeller
有权
确定风扇叶轮质量变化的方法和装置
- Patent Title: Method and apparatus for determining change in mass of fan impeller
- Patent Title (中): 确定风扇叶轮质量变化的方法和装置
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Application No.: US13590708Application Date: 2012-08-21
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Publication No.: US09021876B2Publication Date: 2015-05-05
- Inventor: Jussi Tamminen , Tero Ahonen , Jero Ahola , Markku Niemelä
- Applicant: Jussi Tamminen , Tero Ahonen , Jero Ahola , Markku Niemelä
- Applicant Address: FI Helsinki
- Assignee: ABB Oy
- Current Assignee: ABB Oy
- Current Assignee Address: FI Helsinki
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: EP11179147 20110829
- Main IPC: F04D27/00
- IPC: F04D27/00 ; F04D25/06 ; F04D25/08 ; H02P23/14 ; F04D29/70 ; H02P21/14
Abstract:
A method for determining a change in a mass of a fan impeller. The method includes inducing a torque to the fan impeller and determining a change in the angular speed of the fan impeller, induced by the torque. A value for a first parameter representing a present mass of the fan impeller is determined on the basis of the change in the angular speed and the torque. The change in the mass is then determined on the basis of the first parameter and a second parameter representing the reference mass of the fan impeller.
Public/Granted literature
- US20130047724A1 METHOD AND APPARATUS FOR DETERMINING CHANGE IN MASS OF FAN IMPELLER Public/Granted day:2013-02-28
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