Plasma generation device

A plasma generation device comprising:

• a nozzle case having a cylindrical internal space, a fluid supply port to supply a fluid into the internal space, and a fluid discharge port configured to discharge the fluid in the internal space;
• a nozzle that is rotatably installed about a central axis of the internal space of the nozzle case and that is configured to eject a generated plasma gas;
• and
• a fluid supply/discharge device configured to supply the fluid to the fluid supply port and to discharge the fluid from the fluid discharge port, wherein
• the nozzle has an introduction port through which the generated plasma gas is introduced into the nozzle and an injection port through which the introduced plasma gas is ejected to an outside,
• the injection port is formed at a position deviated from the central axis of the internal space, and
• the fluid supply/discharge device rotates the nozzle by supplying the fluid from the fluid supply port into the internal space and discharging the fluid in the internal space from the fluid discharge port.