Impingement cooling mechanism, turbine blade and cumbustor
AssigneeIHI Corporation
InventorsYoji Okita, Shu Fujimoto, Chiyuki Nakamata
Life of this patent
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Abstract
The present invention relates to an impingement cooling mechanism (1) that ejects a cooling gas (G) toward a cooling target (2) from a plurality of impingement holes (4) formed in an opposing member (3) that is arranged opposite the cooling target (2). Turbulent flow promoting portions (6) are provided in the flow path of a crossflow (CF), which is a flow that is formed by the cooling gas (G) after being ejected from the impingement holes (4). The turbulent flow promoting portions (6) are constituted so that a turbulent flow is promoted from the upstream side to the downstream side of the crossflow (CF).
Claims8
An impingement cooling mechanism that ejects a cooling gas toward a cooling target from a plurality of impingement holes formed in an opposing member that is arranged opposite the cooling target,
- wherein turbulent flow promoting portions formed in the cooling target are provided in a flow path of a crossflow so as to oppose the impingement holes, the crossflow being a flow that is formed by the cooling gas after being ejected from the impingement holes;
- a number of the turbulent flow promoting bodies that constitute each turbulent flow promoting portions in an upstream side of the crossflow is set smaller than a number of the turbulent flow promoting bodies that constitute each turbulent flow promoting portions in a downstream side of the crossflow;
- and
- the turbulent flow promoting portions are constituted so that a turbulent flow is promoted from the upstream side to the downstream side of the crossflow.
Dependencies are inferred from the claim text.