| 摘要 |
The objective of the present invention is to reduce a meshing seal line length and further reduce a blowhole area. A compression side blowhole B 2 is generated in a region surrounded by a male rotor side blowhole contour R 1 , a female rotor side blowhole contour R 2 , and a lower cusp line k 2 . By configuring a female rotor side blowhole contour R 3 with a curve including at least two arcs C 1 and C 2 , an area of the compression side blowhole B 2 may be reduced. At a connection point between arcs, by making tangents of the arcs on both sides across the connection point to be the same gradient, the arcs may be smoothly connected. |
