| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric Roots type compressor having a compact and simple structure capable of cooling a timing gear and a motor. SOLUTION: When a drive shaft 2 is rotated by a motor 12, a first rotor 9 and a second rotor 10 in a rotor chamber 8 are rotated in the directions opposite to each other, working fluid is sucked into the rotor chamber 8 from a suction port 14 through a suction passage 16, and the working fluid discharged from the rotor chamber 8 is discharged from a discharge port 15 through a discharge passage 17. The suction passage 16 and the discharge passage 17 are arranged so as to pass the outside diameter side of a gear chamber 6, respectively. The working fluid is distributed through the suction passage 16 and the discharge passage 17 to cool a timing gear 7 in the gear chamber 6. COPYRIGHT: (C)2005,JPO&NCIPI
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