Title:
LINEAR COMPRESSOR CONTROLLER
Document Type and Number:
WIPO Patent Application WO2007013821
Kind Code:
B1
Abstract:
A control for a linear compressor energises the linear motor in harmony with the present natural frequency of the compressor. The controller monitors the present operating frequency and compares the frequency with one or more outer limit thresholds. The control may remove power from the linear motor if the running frequency drops below a lower threshold. The control may reduce power to the linear motor if the running frequency rises above an upper threshold. The control uses compressor running frequency to operate the comperssor within safe operating limits.
Inventors:
TIAN ZHUANG (NZ)
BOYD JR JOHN H (US)
BOYD JR JOHN H (US)
Application Number:
PCT/NZ2006/000191
Publication Date:
June 28, 2007
Filing Date:
July 25, 2006
Export Citation:
Assignee:
FISHER & PAYKEL APPLIANCES LTD (NZ)
TIAN ZHUANG (NZ)
BOYD JR JOHN H (US)
TIAN ZHUANG (NZ)
BOYD JR JOHN H (US)
International Classes:
F04B35/04; F04B17/04; H02K33/00
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