| 摘要 |
The invention relates to a rotor pair for a compressor block of a screw machine, wherein the rotor pair comprises a secondary rotor (NR) that rotates about a first axis (C1) and a main rotor (HR) that rotates about a second axis (C2), wherein the number of teeth (z2) of the main rotor (HR) is 3 and the number of teeth (z1) of the secondary rotor (NR) is 4. The relative profile depth of the secondary rotor (formula (I)) is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor (NR) and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance (a) of the first axis (C1) from the second axis (C2) and the addendum circle radius rk1 (formula (II)) is at least 1.636, and at most 1.8, preferably at most 1.733. |
