Intelligent energy-saving variable-frequency water supply system and control method thereof

The invention discloses an intelligent energy-saving variable-frequency water supply system and a control method thereof. A water purifying device having a reverse cleaning function is arranged at thefront end of a steady-flow water tank, a steady-flow water supply branch is added to a pump set, and the steady-flow water supply branch, a circulating pipeline, the water purifying device and the steady-flow water tank form a water circulating path. The water purifying device purifies water and improves quality of water entering the steady-flow water tank; the water purifying device, a steady-flow pump branch and the circulating pipeline form a purifying circuit for cleaning the steady-flow water tank, so that manual cleaning frequency of the steady-flow water tank is reduced, and water supply quality of a water supply pipeline network is guaranteed. With application of a stabilized-pressure pump branch, low-frequency running of high-power variable-frequency pump can be avoided, and lossof energy is reduced. Reverse cleaning and circulating cleaning can be carried out synchronously, water supply to the water supply pipeline network can also be achieved during reverse cleaning and circulating cleaning. The intelligent energy-saving variable-frequency water supply system and the control method thereof are easy to implement and promote in application.