Direct expansion formula cooling device

The utility model provides a direct expansion formula cooling device, including off -premises station and indoor set, the circulation intercommunication the inlet tube and the wet return of off -premises station and indoor set, and set up in circulating water pump on the inlet tube, the off -premises station includes outdoor casing, set up in aqua storage tank in the outdoor casing shows enthalpy exchanger, first wind channel, set up in the evaporating chamber at outdoor casing middle part, second wind channel, outdoor circulating fan, return water circulator, the indoor set includes indoor casing, set up in indoor heat exchanger in the indoor casing, the humidification water -locator to and indoor circulating fan. The utility model discloses thereby can retrieve moisture and measure the ability using water wisely and reduce the cold dissipation of measuring with cold, still enable humidity in circulation of room air and outdoor air cycle and the control room, thereby still can make the temperature be less than ambient temperature messenger indoor temperature is less than outdoor temperature by a wide margin.