HIGH POWER DENSITY COOLING OF ELECTRICAL MACHINES USING CERAMIC TUBES OF HIGH THERMAL CONDUCTIVITY
First Claim
Patent Images
1. A generator, comprising:
- at least one armature structure comprising a plurality of conductors; and
at least one hollow heat transfer duct thermally coupled to said at least one armature structure;
wherein said at least one hollow heat transfer duct comprises a material having a thermal conductivity of at least 20 W/mK and an electrical breakdown strength of at least 60 V/mil.
1 Assignment
0 Petitions
Accused Products
Abstract
A high power density generator contains an armature structure having a plurality of conductors and at least one heat transfer tube thermally coupled to the conductors. The tube is hollow so as to allow a heat transfer fluid to pass through it. The tube is made of a material having a thermal conductivity λ of at least 20 W/mK, an electrical breakdown strength of at least 60 V/mil, and a mechanical strength adequate for handling, manufacturing and operation. In an embodiment of the invention, the tube is made of a ceramic material.
23 Citations
23 Claims
-
1. A generator, comprising:
-
at least one armature structure comprising a plurality of conductors; and at least one hollow heat transfer duct thermally coupled to said at least one armature structure; wherein said at least one hollow heat transfer duct comprises a material having a thermal conductivity of at least 20 W/mK and an electrical breakdown strength of at least 60 V/mil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A generator, comprising:
-
at least one armature structure comprising a plurality of conductors; and at least one hollow heat transfer duct thermally coupled to said at least one armature structure; wherein said at least one hollow heat transfer duct comprises a ceramic material having a thermal conductivity of at least 20 W/mK and an electrical breakdown strength of at least 60 V/mil. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A generator, comprising:
-
at least one of an armature structure comprising a plurality of conductors and a core portion; and at least one hollow heat transfer duct thermally coupled to either one of said at least one armature structure and said core portion; wherein said at least one hollow heat transfer duct comprises a material having a thermal conductivity of at least 20 W/mK and an electrical breakdown strength of at least 60 V/mil. - View Dependent Claims (21, 22, 23)
-
Specification