A water circulation instantaneous solar water heater system

Abstract

The invention provides a novel water-circulating instant-heating type solar water heater system which is self-driven without outside power such as electric energy and the like or with less outside power such as electric energy and the like. The system is suitable for a household solar water heater, and is simultaneously suitable for large solar water heaters in places such as hotels and the like. Compared with the prior art, a second water tube and a first water tube are separately arranged independently, so that a sealed loop can be formed through regulation of a three-way valve; an impeller which does not consume electric energy or consumes less electric energy is additionally arranged for driving hot water in the sealed loop to flow in a circulating mode, so that hot water can be provided to a user at any time, and therefore, a process of cooling water before a current water heater is used is avoided, water resources are saved, sufficient utilization of solar energy is realized, and normal use, throughout the year, especially in winter, of the solar water heater is guaranteed.

Description

technical field [0001] The invention relates to a novel water circulation instant solar water heater system, which belongs to the field of solar energy utilization. Background technique [0002] Today, solar water heaters have entered thousands of households to provide people with domestic hot water. But when in use, the cold water in the pipeline connecting the faucet and the water heater storage tank is released from the faucet first. After the cold water is discharged, the hot water in the storage tank can be released. This is what people often say about solar water heaters. "question. Because the connecting pipe between the water heater and the indoor control valve is generally not insulated, so after the water valve is closed, the water in the pipe stops flowing, the heat of the water will be lost quickly, and the temperature will drop rapidly. Usually, the temperature in the pipe will be the same as the environment after ten minutes The temperature is the same, and t...

AI Technical Summary

Problems solved by technology

One is to use thermal insulation material to wrap the pipeline, which has a certain effect but the thermal insulation effect is not good, and the heat of the water in the pipeline is still lost quickly; the second is to use electric heating cables to cover the entire outdoor pipeline, and energize the electric heating cables to achieve pipeline insulation , power consumption

These two methods are passive heat preservation, and with the extension of time, the above heat preservation materials will be aged to varying degrees, power consumption will be lost, and the heat preservation effect will be poor.

[0005] The third is to combine the above two methods and adopt the method of pipeline circulation at the same time, which is to install a circulating water pipe in the solar water heater, and install a circulating pump between the water pipes to make the water in the pipeline and the water in the storage tank circulate to achieve the heat preservation effect. The method can be used in places with large-scale water use such as hotels. Due to the relatively large demand for hot water, the relative cost of electric energy consumed by the circulating pump is acceptable, but it is still not environmentally friendly to simply consume electric energy to drive the cycle; this method is especially not It is suitable for household solar water heaters, because domestic solar water heaters use relatively little hot water and cannot form a large-scale use of hot water. The method of using electric energy to drive circulating pumps to drive hot water circulation is not cost-effective and does not have the universality of popularization and application.

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