Invention Grant
- Patent Title: Method and apparatus for monitoring air filter condition
- Patent Title (中): 监测空气过滤器状况的方法和装置
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Application No.: US13749403Application Date: 2013-01-24
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Publication No.: US09200995B2Publication Date: 2015-12-01
- Inventor: Jero Ahola , Jussi Tamminen , Tero Ahonen
- Applicant: ABB Oy
- Applicant Address: FI Helsinki
- Assignee: ABB TECHNOLOGY OY
- Current Assignee: ABB TECHNOLOGY OY
- Current Assignee Address: FI Helsinki
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: EP12153017 20120130
- Main IPC: G01N15/08
- IPC: G01N15/08 ; B01D46/00 ; B01D46/44 ; H01L21/67 ; F24F11/00 ; F04D27/00 ; F24F3/16
Abstract:
A method and apparatus are disclosed for monitoring accumulation of dirt on an air filter of a ventilation system including the filter and a fan controlled by a frequency converter. An initial value for an operating parameter is determined. A present operating point is determined based on a characteristic curves, and the mechanical power and rotational speed of the fan. A present value for the operating parameter is determined based on the present operating point, and accumulation of dirt is determined on the air filter based on the initial and present values of the operating parameter.
Public/Granted literature
- US20130197826A1 METHOD AND APPARATUS FOR MONITORING AIR FILTER CONDITION Public/Granted day:2013-08-01
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