Spray cooled condenser for an integral heat pipe shaft in high power motors and generators
US5629573A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Oct 3, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A new system for removing heat energy from the rotor of a rotating electrical machine is disclosed. Rotating electrical machines include electric motors, electric generators and the like. The cooling system includes the prior art components of an integral heat pipe rotor shaft, that is, a hollow rotor shaft in which an inner cavity is filled with a suitable working fluid to make an integral heat pipe for removing heat from the rotor. The heat pipe includes an evaporator section inside the rotor and a condenser section extending outside the rotor and the electrical machine housing. The present invention adds a spray chamber surrounding the condenser section. The spray chamber is integrated with the electrical machine housing. Liquid coolant enters the spray chamber and is sprayed through nozzles onto the condenser section to remove the heat transferred from the rotor. The liquid coolant may be routed through a preheater before entering the spray chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.