To provide a forced air-cooling device that operates efficiently at low noise and low consumption power without increasing a maintenance cost.
The forced air-cooling device includes first and second fans that turn in different directions and blow air in the same direction, respectively, and it also includes a fan box wherein the first and second fans are arranged on the vertical face to the blowing direction so that their locations may be replaced with each other when they are rotated 180 degrees while centering the blowing direction, and an enclosure wherein the fan box is loaded. The erecting fan box and the inverted fan box that is inverted by rotating 180 degrees from the erection state while centering the blowing direction are loaded in order back and forth in the blowing direction, thereby constituting a double inversion fan.
COPYRIGHT: (C)2011,JPO&INPIT
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Masao Sekiguchi
Takamasa Nakano