Stroke control apparatus of reciprocating compressor and method thereof
US6851934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jun 30, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0409
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a stroke control apparatus of a reciprocating compressor and a method thereof, the stroke control apparatus of the reciprocating compressor includes a reciprocating compressor, a current detecting unit for detecting a current flowing in a motor of the reciprocating compressor, a stroke detecting unit for detecting a piston stroke by using a voltage and a current applied to the motor of the reciprocating compressor, a phase difference detecting unit for detecting a phase difference by receiving the piston stroke from the stroke detecting unit and the motor current from the current detecting unit, an operational frequency determining unit for determining an operational frequency corresponded to an operation region according to the detected phase difference, a frequency/stroke storing unit for storing a piston stroke value by the determined operational frequency, a reference stroke value determining unit for determining a reference stroke value corresponded to the determined operational frequency by using the stroke value pre-stored in the frequency/stroke storing unit, a control unit for comparing the reference stroke value with a present piston stroke value after a certain time p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.