Positive pressure blower is pointing escape corridor air blower. It outdoor air pressure into the interior. When the building is on fire, it will produce a lot of smoke, carbon monoxide and other toxic gases and block line of sight, through positive pressure blower air to escape the fire stairs, indoor smoke can not reach the stairs, to create the conditions for people to escape. Positive pressure blower usually installed on top of buildings, and the layers of the positive pressure valve linkage. Initial fire damper open roof Francis fan, start positive pressure blower, so that stairwells, elevator hall in positive pressure (air condition). Ventilation area to see about constant air volume range, and then according to pipeline damage Francis fan manufacturers calculate the wind, and finally determine the model. The basic structure of the type of inlet and outlet on the same axis (ie axial flow structure), round shell as cones, leaves of varying width along the flow direction was like. There are straight cylindrical shape, a drum-shaped and curved plus three types of mufflers and other imports. According to the meridional flow acceleration principle, the fan has dual characteristics of centrifugal and axial flow, that is both high pressure have a larger flow muffler Francis fan, and has high efficiency, low noise, high efficiency and wide area and so on. Compact, light weight, easy installation Francis fan, small footprint. Installation and Use: horizontal, vertical and ceiling can be installed. Ventilation, air and pipeline pressure can be used. With the improvement of safety awareness, the demand for fire fighting equipment is growing. Positive pressure ventilation outlet a part of the device, which also belong to the fire-fighting equipment, play a role in blowing smoke when the fire broke out. The new outlet is a positive improvement on the original basis, which can effectively improve the ventilation exhaust area. The new pressure delivery outlet using thin body, reduce operating box size, increase the effective area of ??the ventilation exhaust. And usually normally closed, electric, manual opening. When the output of the need to open the start signal, they also need to close the manual reset closed. When the temperature sensor operating temperature reaches 280 ℃, the valve is closed again. Wide range of applications that do not have natural conditions stairwell smoke, fire elevator room or shared room, the use of natural ventilation of smoke stairs, wide range of areas which do not have the natural draft of the front room applications. Efficient mixed flow fan | Francis fan | roof fan Watson by Texas air-conditioning plant. Texas Watson air-conditioning plant (www.wchuaxin.com) (www.wchuaxin.com) in heat, refrigeration and air conditioning equipment in the field devoted boundless enthusiasm and passion, Watson air conditioning has been customer-centric, for customers to create philosophy value, quality, service to win market, and sincerely hope to cooperate with the community to create success, create brilliant. Related businesses are welcome inquiries, contact: Su Jingli.