Patent ID: 7816631

Claim:
An inverter with a housing having a cooling unit for cooling electronic components and electrical components of the inverter mounted in said housing, said housing of the inverter comprising first and second chambers, said first and second chambers being separated by a wall and configured to receive in the two chambers the electronic components and the electrical components said electronic components and electrical component being cooled by the cooling unit, said electronic components being sensitive to dirt and humidity and being located on one side of the wall in said first chamber which is closed and which has a higher IP grade rating for protection to humidity and dust than the electrical components mounted in said second chamber, heat sink cooling fins which are located on the other side of the wall in the said second chamber which is open to ambient atmosphere, said heat sink including heat exchange structure extending through said wall and being thermally conductively coupled to said electronic components in said first chamber and to said cooling fins in said second chamber and at least one of a choke and a transformer also being located in said second chamber, said electrical components in said second chamber being less sensitive to humidity and dirt than said electronic components in said first chamber, and said second chamber having a cooling system including said cooling unit positioned at one end of said second chamber for cooling both said cooling fins and said electrical components.