Patent ID: 11927195
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 2:
3. A rotary machine, comprising:
the sealing device according to claim 1;
the rotor shaft; and
a casing surrounding the rotor shaft from an outer periphery side and supporting the sealing device that separates a high-pressure-side space on one side in the direction of the axis from a low-pressure-side space on another side in the direction of the axis, wherein
the rotor shaft rotates clockwise about the axis as viewed from the one side in the direction of the axis, and
the spiral groove extends twisting clockwise about a hole part center line extending in the radial direction at a center of each of the hole parts as viewed from an inner side in the radial direction.