Patent ID: 6142741
Filing Date: 2000-11-07
Classification: F04B

Abstract:
A hermetic electric compressor comprising:a sealed casing;a motor unit provided in said sealed casing and having a stator coil;a compressor unit provided in said sealed casing and driven by said motor unit for compressing a refrigerant;a thermistor provided at said stator coil for monitoring a temperature of said stator coil; andcontrol means, responsive to said temperature monitored by said temperature sensor, for controlling a speed of said motor unit via said stator coil,wherein said temperature sensor and said control means are connected via a shielded cable at least partly, andwherein said control means drops the speed of said motor unit to a preset value when the temperature monitored by said temperature sensor exceeds a first preset value and wherein said control means stops said motor unit when the temperature monitored by said temperature sensor exceeds a second preset value which is greater than said first preset value.