Three-return-stroke environment-friendly energy-saving hot blast heater

Abstract

The invention discloses a three-return-stroke environment-friendly energy-saving hot blast heater. The hot blast heater comprises a first wall body layer, a second wall body layer, a third wall body layer, a fourth wall body layer, a fifth wall body layer, a sixth wall body layer and a seventh wall body layer, the wall body layers are sequentially sheathed and are mutually fixedly connected; a first barrel is arranged at the middle part of the first wall body layer, multiple spiral heat transmission air channels are arranged at the periphery of the first barrel, and the first barrel is fixedly connected with the inner wall of the second wall body layer in a sealing way by virtue of the heat transmission air channels; a second barrel and a fourth barrel are fixedly communicated, the fourthbarrel is fixedly connected with the top of the third wall body layer, and a third barrel is fixedly communicated with a fifth barrel; a first opening is arranged at the top of the second wall body layer, and the fourth barrel is arranged in the first opening; the second wall body layer is arranged between the first wall body layer and the third wall body layer, and the second wall body layer is fixedly connected with the first wall body layer by virtue of a plurality of heat transmission air channels. The hot blast heater has higher heat exchange temperature, higher heat utilization ratio, small volume, stable hot-blast temperature, no switching mechanism, long service life, low maintenance cost and low acquisition cost.

Description

technical field [0001] The invention relates to a hot blast stove, in particular to a three-pass environment-friendly and energy-saving hot blast stove. Background technique [0002] At present, as a thermal power machine, hot blast stoves began to be widely used in my country in the late 1970s. It has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. [0003] Through long-term production practice, people have realized that only by using hot air as the medium and carrier can the heat utilization rate and thermal work effect be greatly improved. Traditional electric heat sources and steam thermal power are often equipped with multiple circulating fans during the transportation process, so that they will eventually form hot air indirectly for drying or heating operations. This process obviously has many shortcomings such as a large amount of waste of energy, excessive auxiliary equipment, and complicated techno...

AI Technical Summary

Problems solved by technology

Disadvantages: large volume, large battlefield area, unstable hot air temperature, many switching mechanisms, prone to problems, short life of heat storage body, high maintenance cost, and extremely high purchase cost

Disadvantages: The heat exchange temperature is not as high as that of the heat storage type, and it appeared later, and has not been widely used

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