Title:
COMPRESSOR AND CONTROL METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2002206486
Kind Code:
A
Abstract:
To prevent generation of damages in bearings 28 and 30, when viscosity of the lubricating oil becomes lowered.
A compressor 20 has a sealed housing 24, provided with a built-in electric motor 25 for driving a shaft 32 and a built-in compressor pump unit 22 to be driven by the shaft 32, and a viscosity sensor 42 for measuring viscosity of the lubricating oil of an oil reservoir 26. When the viscosity detected by the viscosity sensor 42 is lower than the prescribed minimum viscosity, a control unit 44 operates an unloader valve 40 for opening.
Inventors:
DUDLEY KEVIN F
Application Number:
JP2001372191A
Publication Date:
July 26, 2002
Filing Date:
December 06, 2001
Export Citation:
Assignee:
CARRIER CORP
International Classes:
F04B39/10; F01M11/12; F04B49/06; F04B49/10; F04C23/00; F04C28/00; F04C28/06; F04C28/26; F04C28/28; F04C29/02; F04C29/12; F04C18/02; (IPC1-7): F04B49/10; F04B39/10; F04B49/06; F04C29/00; F04C29/02; F04C29/10
Attorney, Agent or Firm:
Fujiya Shiga (2 outside)