Seal assembly

1. A seal assembly between a rotor and a stator of a turbomachine, comprising:

a clearance gap;

a plurality of annular chambers,

wherein the clearance gap is disposed between the rotor and the stator,

wherein the clearance gap is bordered by a rotor surface at a first side of the rotor and by a stator surface at a second side of the stator,

wherein the rotor surface and/or the stator surface are provided with a plurality of openings which open into the plurality of annular chambers arranged at a third side of the plurality of openings turned away from the clearance gap, and

wherein the plurality of annular chambers are axially interconnected by a plurality of axial holes.

2. The seal assembly between a rotor and a stator as claimed in claim 1 , wherein the seal assembly is disposed on a turbo-machinery.

3. The seal assembly as claimed in claim 1 , wherein a first inner width of the plurality of chambers is larger than a second inner width of the plurality of openings.

4. The seal assembly as claimed in claim 1 ,

wherein the plurality of annular chambers extend in a circumferential direction, and

wherein into each of the plurality of annular chambers a plurality of openings open.

5. The seal assembly as claimed in claim 4 ,

wherein the plurality of openings are perforations of a perforated plate fastened to the stator surface, and

wherein the plurality of chambers are arranged at a back side of the perforated plate.

6. The seal assembly as claimed in claim 5 ,

wherein a plurality of ribs are disposed at the back side of the perforated plate in the circumferential direction, and

wherein the plurality of ribs surround the plurality of annular chambers.

7. The seal assembly as claimed in claim 1 , wherein a plurality of axes of the openings are essentially perpendicular to an axis of the rotor to be sealed.

8. The seal assembly as claimed in claim 1 ,

further comprising a labyrinth holder including labyrinth teeth with the plurality of chambers in between,

wherein the labyrinth holder is arranged in the stator, and

wherein a perforated section including the plurality of openings is installed between the labyrinth teeth and the plurality of chambers.

9. The seal assembly as claimed in claim 1 ,

wherein each of the plurality of openings is a hole and more than one hole is arranged in an axial plane, and

wherein an axial direction is defined with reference to a rotation axis of the rotor.

10. The seal assembly as claimed in claim 9 , wherein a plurality of holes are arranged in one axial plane.