24V DC Cooling Fan cabinet

"24V DC Cooling Fan", the fan has a long history. China in BC for many years had been to create a simple wooden windmill hulling, its action principle is basically the same with modern centrifugal fan. In 1862, "BETVLCTOR伟德在线最新网站" centrifugal fan British Guyana Bell invented, its impeller, housing concentric type chassis with brick, wood backward straight blade impeller, the efficiency is only about 40%, mainly for mine ventilation. In 1880, it devised volute casing "BETVLCTOR伟德在线最新网站" for mine blast in row, and backward curved centrifugal fan blades, the structure has been more perfect.