Exhaust air out the room pressure drop, indoor air becomes thinner, animal characteristics to form a negative pressure zone fiberglass farming fans, air flows into the interior of compensation due to the pressure difference. In practical applications, industrial plants, livestock centrally installed on the plant side air intakes in the plant room on the other side of aquaculture fan, air from the intake port to livestock fan convection hair. In this process, ANIMAL fan near the doors and windows remain closed, forcing air to flow from the air inlet side shop windows compensation. Air lined up orderly inflow from the air inlet workshop, from workshop flows discharged from the livestock fan shop. Ventilation thorough, efficient ventilation rate can be as high as 99%. Through specific engineering design, according to the need to design ventilation rate and wind speed, any fever, harmful gases, dust can quickly exhaust smoke shop, poorly ventilated curtain any one time can solve the problem. From a few seconds to turn on the fan for ventilation effect. 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. 1862, British Guyana Bell centrifugal blower fan farming invention, its impeller, housing concentric type, chassis fan livestock breeding with brick, wood backward straight blade impeller, the efficiency is only about 40%, mainly for mine ventilation. 1880 people volute casing designed for mine blast in row, and backward curved centrifugal fan blades, the structure has been more perfect. Livestock farming blower fan _ _ Jilin Minhua Qingzhou temperature control equipment supplied by China Qingzhou public thermostat plant. Temperature Control Equipment Factory Qingzhou public Hua (www.minhuawenkong.com) strong, credible, Shandong Weifang fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead China and China Qingzhou temperature control equipment and you hand into the brilliant, for a better future!