COMPOSITE CYCLE TURBOMACHINERY

• US 3,677,012 A
• Filed: 05/31/1962
• Issued: 07/18/1972
• Est. Priority Date: 05/31/1962
• Status: Expired due to Term

• Current Assignee: Alexander P. Batscha
• Original Assignee: Alexander P. Batscha
• Inventors: Batscha, Alexander P.
• Primary Examiner(s): Feinberg, Samuel
• Application Number:
  US04/199,191
• Time in Patent Office: 3,701 Days
• Field of Search: 60/35.6U,35.6W,35.6V,35.6CC,39.16,262,263 230/116A,116B
• US Class Current: 60/262
• CPC Class Codes: F02K 3/065 with front and aft fans
• CPC Class Codes: F02K 3/075 controlling flow ratio between flows
• CPC Class Codes: F02K 3/11 by means of burners or combustion chambers

Abstract

1. A composite fluid flow turbomachine comprising: A FIRST COMPRESSOR; A SECOND COMPRESSOR, SAID SECOND COMPRESSOR BEING ARRANGED TO CONTINUOUSLY RECEIVE A PART ONLY OF THE FLOW FROM SAID FIRST COMPRESSOR, AN INNER DUCT SURROUNDING SAID SECOND COMPRESSOR; AN OUTER DUCT SURROUNDING SAID FIRST COMPRESSOR AND SAID INNER DUCT; MEANS FOR INJECTING FUEL WITHIN SAID OUTER DUCT AND SAID INNER DUCT FOR SUPPORTING COMBUSTION THEREIN DOWNSTREAM OF SAID FIRST COMPRESSOR AND SAID SECOND COMPRESSOR, RESPECTIVELY; A FIRST POWER TURBINE LOCATED IN SAID INNER DUCT AND RECEIVING AN INTEGRAL FLUID FLOW STREAM FROM SAID FIRST AND SECOND COMPRESSORS; Mach A SECOND POWER TURBINE LOCATED PARTIALLY IN SAID OUTER DUCT, SAID SECOND POWER TURBINE RECEIVING A FLUID FLOW STREAM FROM SAID FIRST COMPRESSOR AND THE INTEGRAL FLUID FLOW STREAM FROM SAID FIRST AND SECOND COMPRESSORS; AN OUTER DRIVESHAFT, SAID FIRST POWER TURBINE AND SAID SECOND COMPRESSOR BEING MOUNTED ON SAID OUTER DRIVESHAFT FOR ROTATION THEREWITH; AN INNER DRIVESHAFT CONCENTRIC TO SAID OUTER DRIVESHAFT, SAID SECOND POWER TURBINE AND SAID FIRST COMPRESSOR BEING MOUNTED ON SAID INNER DRIVESHAFT FOR ROTATION THEREWITH; AND A POWER TRANSFER TURBINE, SAID POWER TRANSFER TURBINE BEING ARRANGED IN SERIES FLOW RELATION WITH SAID FIRST AND SECOND POWER TURBINES, SAID POWER TRANSFER TURBINE BEING MOUNTED ON SAID INNER DRIVESHAFT AND FURNISHING POWER TO HELP DRIVE SAID FIRST COMPRESSOR, WHEREBY THE OVERALL CYCLE EFFICIENCY OF SAID COMPOSITE FLUID FLOW TURBOMACHINE IS INCREASED.

Claims

1. A composite fluid flow turbomachine comprising:

a first compressor;

a second compressor, said second compressor being arranged to continuously receive a part only of the flow from said first compressor, an inner duct surrounding said second compressor;

an outer duct surrounding said first compressor and said inner duct;

means for injecting fuel within said outer duct and said inner duct for supporting combustion therein downstream of said first compressor and said second compressor, respectively;

a first power turbine located in said inner duct and receiving an integral fluid flow stream from said first and second compressors;

a second power turbine located partially in said outer duct, said second power turbine receiving a fluid flow stream from said first compressor and the integral fluid flow stream from said first and second compressors;

an outer driveshaft, said first power turbine and said second compressor being mounted on said outer driveshaft for rotation therewith;

an inner driveshaft concentric to said outer driveshaft, said second power turbine and said first compressor being mounted on said inner driveshaft for rotation therewith; and

a power transfer turbine, said power transfer turbine being arranged in series flow relation with said first and second power turbines, said power transfer turbine being mounted on said inner driveshaft and furnishing power to help drive said first compressor, whereby the overall cycle efficiency of said composite fluid flow turbomachine is increased.

2. A composite fluid flow turbomachine comprising:

a first compressor;

a second compressor, said second compressor being arranged to continuously receive a part only of the flow from said first compressor;

an inner duct surrounding said second compressor;

an outer duct surrounding said first compressor and said inner duct;

means for injecting fuel within said outer duct and said inner duct for supporting combustion therein downstream of said first compressor and said second compressor, respectively;

a first power turbine located in said inner duct and receiving an integral fluid flow stream from said first and second compressors;

a second power turbine located partially in said outer duct, said second power turbine receiving a fluid flow stream froM said first compressor and the integral flow stream from said first and second compressors;

an outer driveshaft, said first power turbine and said second compressor being mounted on said outer driveshaft for rotation therewith;

an inner driveshaft concentric to said outer driveshaft, said second power turbine and said first compressor being mounted on said inner driveshaft for rotation therewith mechanically free from the rotation of said outer driveshaft; and

a power transfer turbine, said power transfer turbine being located in said inner duct downstream of said first power turbine, said power transfer turbine being mounted on said inner driveshaft for rotation with said first compressor and said second power turbine and furnishing power to help drive said first compressor, whereby the overall cycle efficiency of said composite fluid flow turbomachine is increased.

3. A composite fluid flow turbomachine comprising:

a first compressor;

a second compressor, said second compressor being arranged to continuously receive a part only of the flow from said first compressor;

an inner duct surrounding said second compressor;

an outer duct surrounding said first compressor and said inner duct;

means for injecting fuel in said outer duct and said inner duct for supporting combustion therein downstream of said first compressor and said second compressor, respectively;

a first power turbine located in said inner duct and receiving fluid flow from said first and second compressors;

a second power turbine located downstream of said first power turbine, said second power turbine extending transversely of both of said ducts for receiving fluid flow from said first compressor through said outer duct and said first and second compressors through said inner duct; and

a power turbine, said power transfer turbine being located in said inner duct downstream of said first power turbine, said power transfer turbine rotating with said first compressor and said second power turbine, the fluid effluent from said power transfer turbine mixing with the flow from said first compressor and furnishing power to help drive said first compressor, whereby the overall cycle efficiency of said composite fluid flow turbomachine is increased.

4. A composite fluid flow turbomachine comprising:

a first compressor;

a second compressor, said second compressor being arranged to continuously receive a part only of the flow from said first compressor;

an inner duct surrounding said second compressor;

an outer duct surrounding said first compressor and said inner duct;

means for injecting fuel in said outer duct and said inner duct for supporting combustion therein downstream of said first compressor and said second compressor, respectively;

a first power turbine located in said inner duct and receiving flow from said first and second compressors;

A second power turbine located downstream of said first power turbine, said second power turbine extending transversely of both of said ducts for receiving flow from said first compressor through said outer duct and said first and second compressors through said inner duct;

an outer driveshaft, said first power turbine and said second compressor being mounted on said outer driveshaft for rotation therewith;

an inner driveshaft concentric to said outer driveshaft, said second power turbine and said first compressor being mounted on said inner driveshaft for rotation therewith; and

a power transfer turbine, said power transfer turbine being located in said inner duct downstream of said first power turbine, said power transfer turbine being mounted on said inner driveshaft for rotation with said first compressor and said second power turbine, the fluid effluent from said power transfer turbine mixing with the flow from said first compressor downstream of said fuel injection means in said outer duct and furnishing power to help drive said first compressor, whereby the oVerall cycle efficiency of said composite fluid flow turbomachine is increased.

5. A composite fluid flow turbomachine comprising:

a first compressor;

a second compressor, said second compressor being arranged to continuously receive a part only of the flow from said first compressor;

first and second duct means, said first duct means surrounding said first and second compressors and said second duct means;

means for injecting fuel in said first and second duct means for supporting combustion therein;

a first power turbine receiving flow from said second compressor and furnishing driving energy thereto;

a second power turbine receiving flow from said first compressor and furnishing driving energy thereto; and

a power transfer turbine, said power transfer turbine being located intermediate said first and second power turbines and receiving the flow from said first and second compressors through said second duct means, the fluid flow into said first power turbine and said power transfer turbine being opposite in direction to the flow through said first compressor, and the fluid effluent from said power transfer turbine being turned 180* and mixing with the flow from said first compressor upstream of said fuel injection means in said outer duct and furnishing power to help drive said first compressor, whereby the overall cycle efficiency of said composite fluid flow turbomachine is increased.

6. A composite fluid flow turbomachine comprising:

a first compressor;

a second compressor, said second compressor being arranged to continuously receive a part only of the flow from said first compressor;

an inner duct surrounding said second compressor;

an outer duct surrounding said first compressor and said inner duct;

means for injecting fuel in said outer duct and said inner duct for supporting combustion therein downstream of said first compressor and said second compressor, respectively;

a first power turbine located in said inner duct and receiving an integral fluid flow stream from said first and second compressors;

a second power turbine located in said outer duct and receiving a fluid flow stream from said first compressor and the integral flow stream from said first and second compressors;

an outer driveshaft, said first power turbine and said second compressor being mounted on said outer driveshaft for rotation therewith;

an inner driveshaft concentric to said outer driveshaft, said second power turbine and said first compressor being mounted on said inner driveshaft for rotation therewith mechanically free from the rotation of said outer driveshaft; and

a power transfer turbine, said power transfer turbine being located in said inner duct downstream of said first power turbine, said power transfer turbine being mounted on said inner driveshaft for rotation with said first compressor and said second power turbine, the fluid flow into said first power turbine and said power transfer turbine being opposite in direction to the flow through said first compressor, and the fluid effluent from said power transfer turbine being turned 180* and mixing with the flow from said first compressor upstream of said fuel injection means in said outer duct and furnishing power to help drive said first compressor, whereby the overall cycle efficiency of said composite fluid flow turbomachine is increased.

7. The invention as claimed in claim 6 wherein at least one of said first and second compressors is of the centrifugal-flow type.