Ryobi also makes a small fan like this. I took it apart and inside there is a 120V wall adapter like you might use to charge a cordless phone. The adapter converts the 120VAC to 18VDC. Yours might be the same. If it is, maybe you can change the 120V - 18VDC adapter for a 230VAC - 18VDC adapter. Good luck!
![Ryobi 40v vs 18v air cannon fan [yeah it was weird]](http://i.ytimg.com/vi/RD2Tya1AEo4/mqdefault.jpg)
Ryobi also makes a small fan like this. I took it apart and inside there is a 120V wall adapter like you might use to charge a cordless phone. The adapter converts the 120VAC to 18VDC. Yours might be the same. If it is, maybe you can change the 120V - 18VDC adapter for a 230VAC - 18VDC adapter. Good luck!