Electricity: motive power systems – Linear-movement motors
Reexamination Certificate
2004-11-17
2008-12-23
Ip, Paul (Department: 2837)
Electricity: motive power systems
Linear-movement motors
C318S114000, C318S128000, C318S632000, C318S801000, C417S044110, C417S417000
Reexamination Certificate
active
07468588
ABSTRACT:
The present invention relates to an apparatus and method for controlling operation of a reciprocating compressor. The operating efficiency of the compressor can be improved by performing the steps of: detecting a current and a stroke applied a compressor; a calculating a mechanical resonance frequency by using the detected current and stroke; and determining an operating frequency command value by adding or subtracting the present operating frequency so as to be within a predetermined range of the calculated mechanical resonance frequency and then driving the compressor by the operating frequency command value.
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Lee Chel-Woong
Sung Ji-Won
Yoo Jae-Yoo
Birch & Stewart Kolasch & Birch, LLP
Ip Paul
LG Electronics Inc.
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