CRANK SHAFT AND HERMETIC COMPRESSOR HAVING THE SAME AND REFRIGERATOR HAVING THE SAME

摘要

PURPOSE: A crank shaft, a sealed compressor, and a freezing device with the same are provided to prevent a crank shaft from being bent in motion by supporting the crank shaft from both upper and lower side of the crank shaft in a radial direction. CONSTITUTION: A crank shaft(230) is press-fitted into the center of a rotor and transfers torque. An oil flow passage(234) is formed inside the crank shaft in an axial direction. A first oil hole and a second oil hole(236) are formed on both upper and lower side around the rotor. One or both of the first oil hole and the second oil hole are inserted into an oil groove.