DC to AC inverter with improved forced air cooling method and apparatus
US5170336A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Aug 21, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved DC to AC electrical inverter has a new and improved method and apparatus with forced air ventilation cooling that significantly increases sustainable AC power output. The methods include the steps of forcing an air flow out of the inverter enclosure and over an external heat sink, and forcing an air flow through a special power transformer between the windings and the core. The apparatus has at least one fan, an air outlet and structure for guiding and directing a forced air flow to and over an external heat sink for the power switches. A structure to continuously force cooling air through the power transformer is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.