Apparatus and method for controlling operation of a linear compressor using a phase difference inflection point detecting unit
US8109736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | May 20, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0402
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for controlling an operation of a linear compressor by detecting a phase difference inflection point at a time point when a phase difference between a current and a stroke is placed within a certain region, and by recognizing the phase difference infection point as a top dead center (TDC)=O. The apparatus for controlling an operation of a linear compressor, comprises: a controlling unit for detecting a phase difference between a current and a stroke, and outputting a frequency varying signal or a phase difference inflection point detecting signal based on the detected phase difference; a phase difference inflection point detecting unit for judging whether to detect a phase difference inflection point or not by the phase difference inflection point detecting signal, and outputting a stroke command value controlling signal based on a result of the judgement; and a stroke command value determining unit for determining a stroke command value based on the stroke command value controlling signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.