The so-called negative pressure ward refers to that under the special device, the air pressure inside the ward is lower than that outside the ward. In this way, in terms of air circulation, only fresh air outside can flow into the ward. The air polluted by patients in the ward will not leak out, but will be discharged to a fixed place through a special channel. In this way, the places outside the ward will not be polluted, thus reducing the chances of medical staff being infected in large quantities. This kind of ward is most suitable for rescuing patients with respiratory infectious diseases such as SARS.
The negative pressure isolation ward of infectious diseases uses one set of air supply purification device and two sets of exhaust air purification device. The air supply purification device is composed of air supply cabinet and primary efficiency, medium efficiency and high efficiency filtering devices. The filtration efficiency is 99.99%. (particle size ≥ 0.3 μm). The exhaust purification device is composed of an exhaust cabinet and a coarse and medium efficiency filtering device. The filtration efficiency is 99.99% (particle size ≥ 0.3 μm).
