Method for estimating fan life
US8340922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jan 19, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D27/001
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for estimating a fan life includes the following steps. Fans to be checked at a number of M are provided. A working temperature and a test temperature of a fan are set, and the test temperature is greater than the working temperature. An acceleration factor is set, which has a fixed value. The fans are kept in an operating state at the test temperature, and a number of the damaged fans is detected and recorded at intervals of a check time, until N damaged fans are detected. A distribution of time points when the fans are damaged is simulated with a Weibull distribution model, and a shape parameter and a characteristic life of the Weibull distribution model are calculated. A life value of the fans at the test temperature is calculated. A life value of the fans at the working temperature is calculated by using the acceleration factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.