| 摘要 |
PROBLEM TO BE SOLVED: To achieve energy saving of a compressor by using low viscosity lubrication oil without deteriorating reliability while sufficiently securing overload operation of a system. SOLUTION: The lubrication oil is not deteriorated and the reliability of the compressor 101 is improved by a construction in which the lubrication oil 108 having a kinetic viscosity of 6 mm<SP>2</SP>/sec or less at 40 degrees is received, a motor 107 has efficiency of 82% or more in a high load condition, a protection device 131 is operated by electric current flowing through a winding and temperature of a container or the winding, and winding temperature protection temperature is set at 120 degrees or less. A temperature rise is low even when the compressor is in an overload condition, operation of the system in the overload condition is sufficiently secured, and both securement of stable operation of the system and improvement of the reliability of the compressor can be achieved. COPYRIGHT: (C)2010,JPO&INPIT
|
