Rearmounted device of energy -conserving air -cooler of cooling down and air -cooler thereof

The utility model discloses a rearmounted device of energy -conserving air -cooler of cooling down and air -cooler thereof, its device is including removable rearmounted board and accelerate cooling mechanism, it includes a plurality of spiral unit of ventilating to step down with higher speed the mechanism, the unit is ventilated including the bowl form wind guide part and the outlet duct portionthat are linked together to the spiral, it supplies to have seted up a plurality of on the removable rearmounted board outlet duct portion passes and is used for fixing the ventilate fixed orifices of unit of spiral, it has spiral shell hand groove to open on bowl form wind guide part's the inside wall, spiral shell hand groove by the outer edge extension of bowl form wind guide part to the bottom with realize with outlet duct portion is linked together, spiral shell hand groove's bore diminishes in the wind -guiding direction gradually, spiral shell hand groove's the hand of spiral is the same with wind vanes's dire