Phase change energy storage water heater

Abstract

The invention discloses a phase change energy storage water heater. The phase change energy storage water heater comprises a phase change energy storage heat exchange device and a valve control combination; the valve control combination comprises a water pipe I connected with a hot water outlet of the phase change energy storage heat exchange device, and a water pipe II connected with a water inlet of the phase change energy storage heat exchange device; a circulating water pump is connected between the water pipe I and the water pipe II; the water pipe I is connected with a cold water inlet pipe and a hot water outlet pipe through a tee joint; the hot water outlet pipe is arranged near the circulating pump; a one-way valve is mounted on the water pipe I between the cold water inlet pipe and the hot water outlet pipe; and a pipe heater is mounted on the water pipe I between the hot water outlet pipe and the circulating pump. The water way circulation is realized through the pipe heaterand the circulating pump during heating of the phase change energy storage water heater. When hot water is used, cold water enters from a cold water pipe for heat exchange through a heat exchanger, and passes through the circulating pump and the pipe heater; and hot water is discharged from a hot water pipe. Secondary heating of water for the phase change energy storage water heater and sharing of one water way with the phase change water heater can be realized. The product utilization efficiency is improved; and the purposes of energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to a water heater technology, in particular to a phase change energy storage water heater. Background technique [0002] The phase change energy storage water heater is filled with phase change materials in the energy storage box. Due to the high enthalpy value of the phase change materials and the high energy storage density, a large amount of heat can be stored. By immersing the heat exchanger in the phase change materials, the The heat exchange of the phase change material can replace the heat stored in the phase change material and heat the phase change material. In the prior art, in the process of using the phase change energy storage water heater, cold water enters the heat exchange tube, if the temperature of the phase change material drops, the outlet water temperature cannot meet the bathing temperature requirement, but there is still heat in the phase change energy storage water heater Not released, reducing the utiliza...

AI Technical Summary

Problems solved by technology

In the prior art, in the process of using the phase change energy storage water heater, cold water enters the heat exchange tube, if the temperature of the phase change material drops, the outlet water temperature cannot meet the bathing temperature requirement, but there is still heat in the phase change energy storage water heater Not released, reducing the utilization efficiency of the product

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