| 摘要 |
PURPOSE:To improve the cooling effect by constructing to dispose to oppose or contact pleats of cooler body mounted with converter and inverter main circuits. CONSTITUTION:A cooler body 1 is composed of a material having high thermal conductivity such as aluminum with one flat surface on which control elements of converter and inverter main circuits are mounted, and many pleats 6 are formed to increase the heat dissipating area on the opposite side surface. Two coolers 1, 1' are opposed at the sides with the pleats 6, and assembled to compose to form a duct 7 capable of ventilating at the opposed surfaces, and a lower air cavity 3 and a forcible ventilation fan 4 are composed. Thus, the air of the fan 4 can efficiently cool two sets of coolers 1, 1' without providing an exclusive duct. |
