| 摘要 |
PURPOSE:To stabilize the performances of an electric controller and a motor by preventing the temperature from rising in those parts, by constituting a cooker in such a manner that the outdoor air in low temperature is to be sucked into a cooling fan, after it has passed through the electric controller and the driving motor to cool them. CONSTITUTION:An air suction hole 8 possible to suck enough air is provided to the back side of a cooling fan 5 fitted coaxially to the shaft 4 of a motor 6, and the air sucked by the cooling fan 5 is exhausted to the outside of an apparatus passing through a duct which encircles the cooling fan 5 and is connected to an exhaust passage 14 on the side of a combustion chamber. An electric controller 10 and a motor 6 are installed in a space facing to the suction port of the cooling fan, and an air flow is produced so that the outdoor air in low temprerature, getting into the space from outdoor air pores 11 can be sucked into the suction hole 8 of the cooling fan, after the air has passed through the electric controller and the motor part to cool them. With such an arrangement, not only the motor shaft 4 is cooled by the cooling fan 5, but also the temperature in the electric controller and in other devices can be prevented from rising, utilizing the suction effect of the fan. |
