Efficient flue heat exchanger

Abstract

The invention discloses an efficient flue heat exchanger which comprises an exchange core (1), an outer pipe (2), a left end box (3) and a right end plate (4), wherein the exchange core is a rectangular pipeline made of square pipe steel through welding in a surrounding manner; heat dissipation convex ribs made of flat steel are welded at the periphery of the outer wall of the exchange core; heat absorption convex ribs made of the flat steel are welded at the periphery of the inner wall of the exchange core; the outer pipe is a rectangular pipe formed by an inner layer and an outer layer; the exchange core is fixed in the pipe cavity of the outer pipe; the channel formed by the inner wall of the outer pipe and the outer wall of the exchange core in a surrounding manner is called an outer channel; the inner pipe cavity of the exchange core is called an inner channel; during the operation, the exchange core is heated by incandescent flue gas through the inner channel, air used for air blasting and combustion supporting is heated to be hot air by the exchange core; by using the technical scheme that the heat exchange surface of the exchange core is enlarged through the large surfaces of the square pipe steel and the flat steel to improve the heat exchange efficiency, the purposes of enlarging the heat exchange surface and improving the heat exchange efficiency of the flue heat exchanger are achieved.

Description

technical field [0001] The invention relates to a heat exchange device, specifically a device that is connected in series between the flue and the chimney of a melting furnace, and is used to absorb the heat in the hot flue gas flowing through the flue and heat the combustion-supporting air into hot air. High efficiency flue heat exchanger. Background technique [0002] Most of the heat exchangers used in the prior art for the flue are castings. The castings are easy to demould during casting, resulting in small heat exchange surfaces and low heat exchange efficiency. Therefore, the prior art has small heat exchange surfaces and low heat exchange efficiency. Low problems and deficiencies. Contents of the invention [0003] Aiming at the problems and deficiencies in the above-mentioned prior art, the present invention adopts a device consisting of an exchange core, an outer tube, a left end box, and a right end plate, wherein the exchange core is a rectangular pipe surroun...

AI Technical Summary

Problems solved by technology

[0002] Most of the heat exchangers used in the prior art for the flue are castings. The castings are easy to demould during casting, resulting in small heat exchange surfaces and low heat exchange efficiency. Therefore, the prior art has small heat exchange surfaces and low heat exchange efficiency. Low problems and deficiencies

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