To provide a compact incineration facility which has a high flexibility in installation place and reduces facility cost and noise, to solve problems on facility cost and noise based on an installation place of a ventilation fan chamber, a layout of a duct, enlargement in size of the fan, and installation of a roof fan, in a garbage incineration facility for incinerating, for example, urban garbage and the like.

A cooling means 2 by water spraying is disposed at an upper portion in a furnace chamber 1 of the garbage incinerator. The cooling means is constituted by attaching a plurality of water spray nozzles 3 on a header tube 4, and pressurized water is supplied to the header tube from a pressurized water supply device 5.