Solid energy storage electric boiler and heat exchanging structure thereof

Abstract

The invention aims to overcome the defects of the existing heating plants, such as a boiler, and to provide a solid energy storage electric boiler and a heat exchanging structure thereof. A heat storage brick is utilized as a heat storage medium for the solid energy storage electric boiler, and a high-capacity heat exchanging structure with a controllable exothermic process. Particularly, the heat exchanging structure comprises a heat storage structure, a heat insulation material layer, a heat insulation wall with holes, a heat exchanger and an outer shell; two ends of the outer shell are provided with air openings; the heat storage structure, the heat insulation wall with holes and the heat exchanger are arrayed in the outer shell; the heat insulation material is placed among the heat storage structure, the heat insulation wall with holes and the outer shell; and the heat exchanging structure also comprises an air door, a fan and a circulation outer air duct.

Description

technical field [0001] The invention relates to a solid energy storage electric boiler, in particular to a solid energy storage atmospheric pressure electric boiler with an innovative heat exchange structure. Background technique [0002] The design and development of solid energy storage atmospheric pressure electric boilers are aimed at the replacement products of many small and medium-sized coal-fired boilers. Due to their low thermal efficiency, environmental protection and management difficulties, small and medium-sized coal-fired boilers have been widely used in developed countries and cities above medium-sized in my country. It is forbidden to use, and the alternatives are mostly grid connection with central heating, switching to gas heating, switching to oil furnace heating, direct heating electric heaters, regenerative electric heaters, etc. [0003] However, many users still use traditional coal-fired boilers due to various conditions, that is, they cannot be connec...

AI Technical Summary

Problems solved by technology

[0005] 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.

[0006] One of the company's prior invention patent applications is about the recently developed small split electric boiler (a heat storage heating unit and its heat storage structure, application number 2010101205710). The energy storage method of the solid heat storage body, due to the high heat capacity of the heat storage body, can be heated at a high temperature, and the heat storage capacity of the same volume is greatly increased, so that the volume of the equipment is greatly reduced, and the combined method is used to provide heat for different heating areas. It is generally suitable for heating and domestic hot water supply for buildings below 5,000 square meters. Because of the combined structure, a single unit cannot meet large-area heating, and multiple units need to be connected in parallel. At the same time, it is necessary to realize the linkage control of multiple units, occupying an area Relatively large, complex control, relatively high unit investment

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