Multi-working-condition heat storage type electric boiler

Abstract

The invention relates to a multi-working-condition heat storage type electric boiler. The multi-working-condition heat storage type electric boiler is characterized by comprising an electric heater, a circulating water pump, a circulating pipeline, heat storage balls, a supporting plate, a water distribution disc, a snakelike heat exchange coiled pipe and an envelope structure. According to the multi-working-condition heat storage type electric boiler, a heat source and a heat storage medium are integrated into one product, the structure is compact, and the heating function and the heat storage function are both met. A heat storage material is packaged through a spherical structure, the heat exchange area is large, heat storage and heat exchange in the heat release process are strengthened, the heat storage balls are stacked in the boiler, the structure is compact, a clearance exists between every two adjacent heat storage balls, and water steam and water flowing heat exchange is facilitated.

Description

technical field [0001] This patent belongs to the heat storage field and the field of electric boilers, and in particular relates to a multi-working-condition heat storage electric boiler. Background technique [0002] Smog is severe in northern areas in winter. In order to improve the environment and meet the heating needs of the people at the same time, the State Council proposed the policy of replacing coal with electricity. In an environment below -25°C, the effect of the air source heat pump is poor, and the outlet water temperature is low, which makes it difficult to meet the needs of heating and domestic hot water. With the improvement of urban environmental protection requirements, there are more and more heating methods that use electric energy instead of coal-fired, which increases the pressure on the supply of electricity, and even causes electricity shortages, while the power supply at night is relatively rich, that is, low-peak electricity, and the use of low-pe...

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Problems solved by technology

[0003] In terms of the existing technology of regenerative electric boilers, a hot water regenerative electric boiler has appeared on the market in recent years, which adds a water tank to the original electric heating and uses water as the heat storage medium to store electric heat. It is relatively low, but there are many disadvantages, mainly because the heat capacity of water is low, the boiling point is low, and the energy storage is limited under normal pressure. To achieve the same heating effect, the heat storage volume will be greatly increased, not only the investment amount will increase, And it requires a lot of space for equipment installation, and the cost of land and civil construction is also greatly increased

In recent years, there have been technologies on the market that use energy storage bricks instead of water as the energy storage medium, but unlike the present invention, they all use energy storage bricks to directly heat heat transfer media such as water or air, and there are also the above problems and defects. It requires a large water storage tank, covers a large area, and requires a high investment. The air used is directly ventilated with hot air. The process is difficult to control and cannot solve the problems of drying and using hot water.

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