| 摘要 |
<p>The water rheostat A has a main electrode unit 61, an electrode water circulation pump 21 and a cooling radiator 9 provided in an electrode water cooling and circulation line 22 which is in fluid communication with the water rheostat for feeding to and draining from the water rheostat A a prescribed quantity of electrode water so that the temperature and amount of electrode water in the water rheostat A are kept constant. The cooling radiator 9 comprises a radiator body 54 having front and rear surfaces, a spray pipe 10 for spraying cooling water onto the rear surface of the radiator body 54, and a fan 11 for blowing cooling air onto the rear surface of the radiator body 54. For optimum cooling efficiency, the radiator body 54 is provided with a hood 55, 57 covering the front of the radiator body 54 and having a steam release port 55a, 57a in a top part thereof. <IMAGE> <IMAGE></p> |
