To provide a screw compressor capable of increasing a discharge temperature.
A screw compressor 1 has a rotor chamber 8 accommodating screw rotors 9, 10, bearing spaces 30, 31 accommodating bearings 20, 22 supporting rotor shafts 17, 18 of the screw rotors 9, 10 and supplying a lubricant to a part at an opposite side of the rotor chamber 8 through oil supply flow channels 36, 37, oil pressure spaces 42, 43 respectively disposed between the rotor chamber 8 and the bearing spaces 30, 31 for supplying the lubricant through an oil injection flow channel 41, intermediate spaces 45, 46 respectively disposed between the pressure oil spaces 42, 43 and the bearing spaces 30, 31 and capable of allowing the lubricant to leak out from the bearing spaces 30, 31 and the pressure oil spaces 42, 43, and an oil discharge flow channel 48 for communicating the intermediate spaces 45, 46 with a space of low pressure to discharge the lubricant from the intermediate spaces 45, 46.
| JPH0381587 | SCROLL TYPE COMPRESSOR |
| JP2005069163 | AIR COOLED DRY VACUUM PUMP |
| JPS60249691 | ROTARY PISTON VACUUM PUMP |
YOSHIMURA SEIJI
TEZUKA SATOSHI
Takuji Yamada
Atsushi Maeda
Yoshiyuki Maebori