Diffuser with controlled diffused air discharge
Patent 5632141 Issued on May 27, 1997. Estimated Expiration Date: 
September 9, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 9, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2520697 3394543 3777489 Combustor diffuser Combustor inner passage with forward bleed openings Patent #: 5187931 InventorsApplicationNo. 303795 filed on 09/09/1994US Classes:60/782, Having bleed air to cool or heat motor or component thereof (e.g., active clearance control, etc.)60/751, Having diffuser for air inlet60/785Air bleedExaminersPrimary: Thorpe, Timothy S.Attorney, Agent or FirmForeign Patent References
International ClassF02C 006/08AbstractA gas turbine engine diffuser case construction is described that increases the amount of available discharge air for service applications compared to the prior art while reducing downstream component distortion and degradation. The diffuser case has passageways for diffused air that connect a diffused air region to a manifold. At least one orifice is located at the end of each of the passageways in the diffused air region. The size of the orifices controls the amount of air that is discharged from the diffused air region to the manifold. Diffused compressor air collects in the manifold and is then extracted from the manifold as needed for engine or service applications. The size and location of the orifices in the diffuser radially and circumferentially control the rate of discharge of the diffused air from the diffuser before the air enters the combustor region. The ability to influence the flow of air at particular locations around the combustor helps the designer to improve cooling uniformity. | |
