Beverage dispenser and heat storage method of beverage dispenser

The invention relates to the field of beverage dispensers and discloses a beverage dispenser and a heat storage method of the beverage dispenser. The beverage dispenser comprises a main control module, a heating water path, a preheating water path, an energy storage device, a first reversing valve and a water return path. The heating water path is used for heating a water solution. The preheatingwater path is connected with the water inlet side of the heating water path. The energy storage device is arranged on the preheating water path. The first reversing valve is arranged on the water outlet side of the heating water path, and the water return path is communicated with the first reversing valve. The first reversing valve is electrically connected with the main control module and is used for conducting the heating water path with the water outlet of the beverage dispenser or conducting the heating water path with the water return path. The main control module is used for controllingthe first reversing valve