Principle One: Determine the path of fresh air, fresh air into the kitchen from the air cleaner air box area, discharged from the dirty place. General polluted air from the bathroom, toilet and kitchen exhaust, and fresh air from the living room into the bedroom and other areas. Conditions permit, try to follow the next entry on the principle of air flow, and fresh air into the room from a lower position (ground not less than 800mm), indoor exhaust gas discharged from a higher position. Try the fresh air inlet and outlet is not a plane, the antithesis of the best. Heat exchange system currently, whether at home or abroad, Zhengzhou wind chassis, the new wind ventilators used in stationary and rotating heat exchangers have two forms of which also belong to Rotary rotary type heat exchanger. From normal use and maintenance point of view, still better than the rotary type, but more than the mainframe 2 × 10000m3 / h it is generally only be achieved by Rotary heat exchanger wind chassis manufacturers, it can be said static and Rotary has advantages and disadvantages. For ease of flow passages wind chassis layout inside the device, in order to reduce the overall volume of fresh air ventilator using a cross-flow, static plate heat exchanger. Namely: the direction perpendicular movement of hot and cold gas, which belong to the convective heat transfer properties of the turbulent flow within the boundary layer. Therefore, sufficient heat exchange can achieve higher energy efficiency. Shandong wind chassis, rich ventilation equipment (certified), wind chassis provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.