Novel electromagnetic induction heating and warming device

Abstract

The invention relates to the technical field of warming, and discloses a novel electromagnetic induction heating and warming device. The device includes a boiler and a heat insulating tube fixedly communicated with one side of the boiler. The device is characterized in that an electromagnetic inductor and a hot air circulating fan are fixedly mounted on one end, which is located at the outer sideof the boiler, of the heat insulating tube, an induction coil sleeving a metal iron tube is fixedly mounted between the inner walls of the electromagnetic inductor and is used for heating the heat insulating tube, a medium and high frequency power supply connection end is arranged on the top of the electromagnetic inductor, and heat exchange tubes communicating with the heat insulating tube is fixedly mounted in the boiler. Heating circulating water and a metal tube in an electromagnetic coil are separated, and heat generated by the metal tube is transmitted to the boiler by air circulation. In this way, the temperature of the metal tube can rise to more than 800 DEG C. The temperature rises and the resistivity becomes large. Under the same conditions, the generated heat becomes larger, the heating efficiency is improved, and the safety during use is also improved.

Description

technical field [0001] The invention relates to the technical field of heating, in particular to a novel electromagnetic induction heating and heating device. Background technique [0002] Electric heating has a broad market prospect, because oil and coal resources are decreasing year by year, and will eventually be exhausted, while traditional coal-fired and oil-fired boilers will cause huge damage to the ecological balance, causing serious environmental pollution, and eventually It will also be eliminated, and the price of traditional plumbing continues to rise, making it difficult for residents to accept the cost of heating, and now the society advocates energy conservation and environmental protection, making electromagnetic heating have a very broad market. [0003] At present, the more common electric heating devices on the market can be divided into two types: one is the resistance wire heating tube, which is directly inserted into the electric heating tube in the sea...

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Problems solved by technology

[0002] Electric heating has a broad market prospect, because oil and coal resources are decreasing year by year, and will eventually be exhausted, while traditional coal-fired and oil-fired boilers will cause huge damage to the ecological balance, causing serious environmental pollution, and eventually It will also be eliminated, and the price of traditional plumbing continues to rise, making it difficult for residents to accept the cost of heating, and now the society advocates energy conservation and environmental protection, making electromagnetic heating have a very broad market

[0003] At present, the more common electric heating devices on the market can be divided into two types: one is the resistance wire heating tube, which is directly inserted into the electric heating tube in the sealed water tank and heated at the rated voltage, and the biggest disadvantage of this heating method is that the resistance wire generates The thermal efficiency is low, and it is easy to leak electricity in water, which poses a serious safety hazard; the other is electromagnetic heating. The current electromagnetic heating is to wind the electromagnetic wire outside the metal tube into an electromagnetic coil, and then pass the rated high-frequency alternating current on the metal tube wall. Eddy current heating is generated, and the heat is transferred to the heating area by means of circulating water flowing in the metal tube. The disadvantage of this heating method is that due to the existence of circulating water inside the metal tube, the maximum heating temperature of the metal tube exceeds the evaporation temperature of water by 100 degrees

The resistivity of the metal tube cannot be increased, according to Joule's law; the square of the current remains unchanged, the greater the resistance, the higher the heat generated, that is, the higher the metal temperature, the greater the resistance, so the heat generated under the same conditions cannot be increased, and the heating efficiency Low

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