Damping resonator with impingement cooling

摘要

A resonance chamber (42) has an outer wall (32) with coolant inlet holes (34A-C), an inner wall (36) with acoustic holes (38), and side walls (40A-C) between the inner and outer walls. A depression (33A-C) in the outer wall has a bottom portion (50) that is close to the inner wall compared to peaks (37A-C) of the outer wall. The coolant inlet holes may be positioned along the bottom portion of the depression and along a bottom portion of the side walls to direct coolant flows (44, 51) toward impingement locations (43) on the inner wall that are out of alignment with the acoustic holes. This improves impingement cooling efficiency. The peaks (37A-C) of the outer wall provide volume in the resonance chamber for a target resonance.

主权项

1. A damping resonator comprising:
a resonance chamber formed by an outer wall with coolant inlet holes, an inner wall with acoustic holes, and side walls spanning between the inner and outer walls; a depression in the outer wall comprising a bottom portion that is closer to the inner wall than is a first peak portion of the outer wall; the coolant inlet holes distributed along the bottom portion of the depression; wherein the coolant inlet holes are close enough to the inner wall for effective impingement cooling thereof, and are located to direct coolant flows toward impingement locations on the inner wall apart from the acoustic holes; wherein the first peak portion of the outer wall is disposed at a first distance from the inner wall, and the bottom portion of the depression is disposed at a second distance from the inner wall that is less than 60% of the first distance.