Cooling apparatus for switchgear with enhanced busbar joint cooling
US8717746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2012 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Sep 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/526
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cooling apparatus is provided for a switchgear having at least one primary contact to connect to a terminal of a circuit breaker, with a busbar joint connected to the primary contact. The cooling apparatus includes an evaporator associated with the primary contact. A condenser is located at a higher elevation than the evaporator. Heat pipe structure fluidly connects the evaporator with the condenser. Heat transfer structure is coupled with the busbar joint for removing heat from the busbar joint. Working fluid is in the evaporator so as to be heated to a vapor state, with the heat pipe structure transferring the vapor to the condenser and passively returning condensed working fluid back to the evaporator for cooling the at least one primary contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.