Heat exchanging type boiler

Abstract

The present invention relates to a heat exchanging type boiler that includes: a water retaining reservoir (10) in which a predetermined amount of water is charged; and a combustion chamber (33) for emitting heating gas at a high temperature to the water in the water retaining reservoir (10) through a heating gas supply pipe (20) such that the water in the water retaining reservoir (10) is raised to produce steam at a high pressure, the boiler characterized in that water discharging film (32) disposed between the heating gas supply pipe (20) and the water and having a plurality of fine through holes such taht the water in the water retaining reservoir (10) is not leaked to the combustion chamber (33) and at the same time the heating gas emitted to the water by means of the heating gas supply pipe (20) is distributed in substantially small bubble form. Thus, water heating speed can be considerably increased, heat efficiency of the boiler can be more improved, a volume of the boiler can be decreased, the life of the boiler can be semi-permanently extended since the water retaining reservoir is not directly heated, and the cleaning of the interior of the boiler can be carried out in an easy manner.

Description

technical field [0001] The invention relates to a heat exchange boiler, in particular to a heat exchange boiler which generates bubble-shaped combustible gas and makes the combustible gas contact with the water in the water tank to heat the water in the water tank. Background technique [0002] Generally speaking, a boiler is a device that heats water from inside or outside in a sealed tank in order to provide hot water or high-temperature and high-pressure steam. High-temperature water or steam is used to heat buildings, while high-pressure water or steam is used to start steam turbines in thermal power plants to generate electricity. [0003] In order to reduce a large amount of waste heat other than the heat consumed for heating water, various studies have been conducted on boilers. Recently, a booster boiler is provided for supplying compressed air in a combustion chamber to improve combustion efficiency in the combustion chamber. [0004] Typically, a conventionally d...

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Problems solved by technology

[0006] However, in conventionally used boilers, heat energy is largely consumed for raising the temperature of the water tank or water pipes through the water tank or water pipes, and due to the high thermal conductivity of the water tank or water pipes, heat energy is easily dissipated outside the boiler, which makes the boiler The thermal efficiency is greatly reduced

In addition, the convection of water in the tank or pipes is only used to increase the overall temperature of the water, so that the heating rate is very low and it is difficult to increase the thermal efficiency beyond a specified level

[0007] In addition, in order to expand the heat transfer area of ​​the water tank or water pipe, the water tank or water pipe is designed to be bent many times, which leads to high manufacturing cost

And because of the complicated structure, it takes quite a long time to clean the tank or the water pipes

[0008] Tanks or pipes have high thermal conductivity, but relatively low chemical resistance, making them easily exposed to corrosion

At the same time, the impurities in the water are combined to produce rust and adhere to the inner wall of the water tank, which greatly reduces the heat transfer efficiency

Therefore, the thermal expansion on the tank wall surface is not uniform and the boiler cracks

This results in a reduced life cycle of the boiler and frequent cleaning of the boiler interior

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