Abstract: Due to the high filtration accuracy, reverse osmosis water purifier needs high pressure for reverse osmosis, and the terminal water output of pure water is restricted. In order to improve the terminal water yield based on the current technology, large flow technology is adopted to improve the terminal water yield parameters. Through testing and analysis, the large flow technology can significantly improve the terminal water output (to 4 L/min), greatly reduce the product noise (≤51 dB(A)), and ensure that the effluent quality meets the health and safety standards, in addition, the large flow technology also has a considerable reduction in the cost of water purifiers. Therefore, the large flow technology in drinking water experience, pure water quality, product cost, etc., are more in line with consumer demand, and play a positive role in promoting the development of reverse osmosis water purifier industry.

Key words: Large flow, Large flux, Desalination rate, Noise, Terminal water output (Water purifier outlet flow rate)