| 摘要 |
PURPOSE:To reduce a temperature between a shell of a main body and heating chamber and to reduce a temperature of electric parts or structural parts arranged in the vicinity of a space between the shell of the main body and the heating chamber as well, by extracting hot air in a specific part between the shell of the main body and the heating chamber in a concentrative state. CONSTITUTION:Exhaust gas to be exhausted from an exhaust cylinder 7 and cooled air sucked in from a suction hole 5a provided on the back of a shell 5 of a main body as shwon by an arrow through a self-cooling fan 4b are exhausted through one side 6b of exhaust cylinder 6 and hot air in the vicinity of a safety switch 12 come out of a hole 5c on the top of the shell 5 of the main body provided on the upper part of the safety switch 12 is exhausted from the other one side 6c of the exhaust cylinder 6 by passing through a hot air extracting guide 11. As the hot air is extracted in a concentrative state through the hole 5c on the top of the shell 5 of the main body provided on the upper part of the safety switch 12, a temperature of the safety switch and its vicinity can be reduced. In addition to the above, it is preferable to provide the hole 5c on the top of the shell 5 of the main body connecting the hot air vent guide 11 above the arbitrary parts which are required to reduce their temperature. |
