| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compressor capable of efficiently reducing oil discharge.SOLUTION: A scroll compressor 101 includes a casing 10, a compression mechanism 15, a driving motor 16, and an upper balance weight cover 54a. The driving motor 16 has a stator 51 and a rotor 52, and a rotor flow passage 52f and a motor cooling passage 55 are formed. The rotor flow passage 52f is formed in the rotor 52, and communicates an upper space S11 of the driving motor 16 with a lower space S12. The motor cooling passage 55 communicates the upper space S11 with the lower space S12 in a radial outer side of the rotor 52. The upper balance weight cover 54a closes the rotor flow passage 52f or narrows the rotor flow passage 52f when a rotation phase of the rotor 52 is in a first range R1. The upper balance weight cover 54a opens the rotor flow passage 52f wider when the rotation phase is in a second range R2 than when the rotation phase is in the first range R1.</p> |
