Temperature control energy-saving device based on phase change material

The utility model discloses a temperature control energy-saving device based on a phase change material, which relates to the technical field of temperature control equipment, and comprises an inner machine assembly and an outer machine assembly, the inner machine assembly comprises an inner machine fan, a first finned tube and an inner heat exchange tube; the outer unit assembly comprises an outer heat exchange pipe and a circulating pump, the outer heat exchange pipe and the inner heat exchange pipe are communicated to form a circulating passage, a circulating working medium used for absorbing cold or heat is arranged in the circulating passage, and the circulating pump is arranged on the circulating passage; through the inner heat exchange pipe and the outer heat exchange pipe which are communicated and the circulating working medium in the inner heat exchange pipe and the outer heat exchange pipe, cold energy in the external environment can be introduced into a limited space for refrigeration, meanwhile,