Phase change thermal storage type water heater and control method thereof

Abstract

The invention discloses a phase change thermal storage type water heater and a control method thereof. The phase change thermal storage type water heater comprises a tank body which is internally provided with a phase change material. The phase change thermal storage type water heater further comprises a heat exchange pipeline, a circulation branch pipe, a heating device, a water inlet pipe, a water outlet pipe, a phase change material detection module and a switch valve, wherein the heat exchange pipeline is provided with a water inlet and a water outlet and comprises a heat exchange section in contact with the phase change material; the two ends of the circulation branch pipe communicate with the water inlet and the water outlet correspondingly, a circulation pipeline is formed by the circulation branch pipe and the heat exchange pipeline, and a driving device is arranged on the circulation pipeline; the heating device is installed on the circulating pipeline; the water inlet pipe communicates with the heat exchange section through the water inlet; the water outlet pipe communicates with the heat exchange section through the water outlet; both the phase change material detection module and the switch valve are arranged on the water outlet pipe; and the phase change material detection module is located behind the switch valve in the water outlet direction of the water outlet pipe. According to the technical scheme, the phase change material can be heated indirectly, and the situation that the phase change material is damaged due to excessively high local temperature is avoided.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a phase change heat storage water heater and a control method thereof. Background technique [0002] The phase change heat storage water heater is filled with phase change materials in the inner tank, and the heat exchanger is buried in the phase change materials, and the thermal energy is stored in the phase change materials by taking advantage of the advantages of high enthalpy value and high energy storage density of the phase change materials. changing material. When hot water is needed, the cold water exchanges heat with the phase change material through the heat exchanger to replace the heat stored in the phase change material. [0003] The existing phase-change heat storage water heaters usually directly heat the phase-change material through a heating device. Since the heating temperature of the heating device is generally high, it is easy to cause damage to the phase-change...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing phase change heat storage water heaters usually directly heat the phase change material through the heating device. Since the heating temperature of the heating device is generally high, it is easy to cause damage to the phase change material.

Images