Efficient refrigeration water dispenser

The invention discloses a water dispenser with an efficient refrigeration function. The water heater comprises a water storage tank, a hot container, a compressor, an evaporator and a condenser, the hot container is arranged below the water storage tank; the evaporator and the condenser are respectively connected with the compressor; a separation sheet is arranged in the water storage tank; the water storage tank is divided into an upper chamber and a lower chamber by the separation sheet; the lower chamber is connected with a cold water outlet pipe; the upper chamber is connected with the hotliner; a water through hole is formed between the upper chamber and the lower chamber; the evaporator is arranged in the lower chamber; the lower chamber is connected with a cold water outlet pipe; the hot container is connected with a hot water outlet pipe; after the technical scheme is adopted, the structure is simple, an inner cavity of the water storage tank is divided into an upper cavity and a lower cavity through