Patent ID: 11940150
Assignee: ROLLS-ROYCE PLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A combustion chamber assembly, comprising:
a combustion chamber for an engine, the combustion chamber comprising a combustion chamber wall which at least partially surrounds a combustion space of the combustion chamber, the combustion chamber wall including a through hole being peripherally bounded on an outer side of the combustion chamber wall by a hole edge, and
a combustion chamber shingle which is fixed on an inner side of the combustion chamber wall,
a mixing air hole including a duct portion with an inner circumferential surface for guiding mixing air through the combustion chamber wall and the combustion chamber shingle into the combustion space, the duct portion at least partly extending through the through hole and including a collar bounding the duct portion on an outer side away from the combustion space,
the collar being attached to the combustion chamber shingle,
a cooling air opening positioned on the inner circumferential surface and extending in a direction of the combustion space, the cooling air opening leading into a cooling air duct which extends through the duct portion and via which cooling air can be guided out of the mixing air hole in a direction of a hot side of the combustion chamber shingle facing the combustion space,
the collar including an outer peripheral edge, the outer peripheral edge including a first collar portion on a downstream side of the outer peripheral edge and a second collar portion on an opposing upstream side of the outer peripheral edge across the duct portion, the first collar portion protruding outwardly away from the combustion space beyond the hole edge on the outer side of the combustion chamber wall, the second collar portion not protruding outwardly away from the combustion space beyond the hole edge on the outer side of the combustion chamber wall.