Method for making a fluid cooled acyclic generator rotor
First Claim
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1. A method for manufacturing a fluid cooled rotor for an acyclic electromagnetic machine comprising the steps of:
- A. providing a rotor core of a ferromagnetic steel having a peripheral surface;
B. machining internal passages in said core opening into said core peripheral surface for accommodating the circulation of a coolant;
C. providing a plurality of coolant tubes;
D. fixedly supporting said coolant tubes in spaced relation to said peripheral surface, said tubes being distributed about the periphery of said core;
E. coupling inlet and outlet ends of said tubes in coolant flow connection with said passages at said peripheral surface; and
F. forming a current conductor enveloping said tubes and diffusion bonded to said core peripheral surface from a metallic powder by hot isostatic pressure, said passages being vented to the isostatic pressure to prevent collapse of said tubes.
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Abstract
An internally cooled rotor for an acyclic generator is disclosed as having a ferromagnetic steel core to which is diffusion bonded a cylinder copper conductor in which is embedded a multiplicity of cooling tubes communicating with coolant passages formed in the core. The cooling tubes are implanted in a hot isostatic pressure process during which the copper cylinder is at least in part created by the densification of copper powder to a non-porous mass.
18 Citations
14 Claims
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1. A method for manufacturing a fluid cooled rotor for an acyclic electromagnetic machine comprising the steps of:
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A. providing a rotor core of a ferromagnetic steel having a peripheral surface; B. machining internal passages in said core opening into said core peripheral surface for accommodating the circulation of a coolant; C. providing a plurality of coolant tubes; D. fixedly supporting said coolant tubes in spaced relation to said peripheral surface, said tubes being distributed about the periphery of said core; E. coupling inlet and outlet ends of said tubes in coolant flow connection with said passages at said peripheral surface; and F. forming a current conductor enveloping said tubes and diffusion bonded to said core peripheral surface from a metallic powder by hot isostatic pressure, said passages being vented to the isostatic pressure to prevent collapse of said tubes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification