| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw compressor free from excessive supply of a lubricant to a bearing.SOLUTION: A screw compressor in which a gas is compressed by screw rotors 9, 10 to supply a lubricant, has a rotor chamber 8 accommodating the screw rotors 9, 10, bearing spaces 31, 32 accommodating bearings 20, 22 supporting rotor shafts 17, 18 of the screw rotors 9, 10 and provided with bearing oil discharge flow channels 36, 37 for discharging the lubricant, pressure oil spaces 40, 41 respectively disposed between the rotor chamber 8 and the bearing spaces 30, 31 to supply the lubricant through an oil injection flow channel 39, intermediate spaces 43, 44 respectively disposed between the pressure oil spaces 40, 41 and the bearing spaces 30, 31, allowing the lubricant to leak out from the pressure oil spaces 40, 41, and communicated with the bearing spaces 30, 31, and an intermediate oil discharge flow channel 46 for communicating the intermediate spaces 43, 44 with a low pressure space having a pressure lower than a lubricant supply pressure to the pressure oil spaces 40, 41. |
