Flue for heat exchange

Abstract

The invention discloses a flue for heat exchange, which is characterized by comprising a plurality of cross pipes and lateral connectors connected with two sides of each of the plurality of cross pipes; the lateral connectors comprise a plurality of lateral plates with holes corresponding to the cross pipe in diameter, grooves of which the notches are sealed and welded with the lateral plates, and partition boards dividing the grooves into several sections, wherein the partition boards are welded in the grooves or on the lateral plates; the width of each section of the grooves corresponds to the width, occupied by each two adjacent holes on the lateral plates, of the lateral plates; each groove comprises a groove body of which the cross section is U shaped and end plates welded and fixed on the two ends of each groove; and the two ends of each of the plurality of cross pipes are inserted in and connected with the holes in the lateral plates of the lateral connectors on two sides in a staggered manner respectively and are welded and fixed in the holes in the lateral plates of the lateral connectors on two sides. Compared with the prior art, the flue has the advantages of small distance between upper and lower pipes, desirable radiation effect, mechanical welding, high production efficiency, easy quality assurance and raw material conservation.

Description

Technical field: [0001] The invention relates to a flue gas pipe. Background technique: [0002] Existing flue gas pipes for heat exchange used in gas steam generators or water heaters are all serpentine bent pipes, so as to maximize contact with the water in the water tank, thereby fully dissipating the flue gas in the flue gas pipe. The heat energy is transferred to the water, the water is boiled or the water is evaporated into water vapor, and the smaller the distance between the bent upper tube and the lower tube, the larger the contact area between the same volume of water and the flue gas pipe, The higher the heat exchange efficiency, the traditional flue gas pipe is welded by connecting pipes with 45-degree angle cut surfaces at both ends and upper and lower pipes with 45-degree angle cut surfaces. Determined by the welding process, the distance between the upper tube and the lower tube can only reach 10mm, otherwise, the upper tube and the lower tube cannot be effec...

AI Technical Summary

Problems solved by technology

[0002] Existing flue gas pipes for heat exchange used in gas steam generators or water heaters are all serpentine bent pipes, so as to maximize contact with the water in the water tank, thereby fully dissipating the flue gas in the flue gas pipe. The heat energy is transferred to the water, the water is boiled or the water is evaporated into water vapor, and the smaller the distance between the bent upper tube and the lower tube, the larger the contact area between the same volume of water and the flue gas pipe, The higher the heat exchange efficiency, the traditional flue gas pipe is welded by connecting pipes with 45-degree angle cut surfaces at both ends and upper and lower pipes with 45-degree angle cut surfaces. Determined by the welding process, the distance between the upper tube and the lower tube can only reach 10mm, otherwise, the upper tube and the lower tube cannot be effectively sealed and welded together with the connecting tube, and can only be welded manually, so the production efficiency is low and the quality is not good. easy to guarantee

In addition, the heat energy can only be transferred along the serpentine pipe. When the water tank is short of water and causes dry burning, the flue gas pipe at the flue gas inlet section is easily damaged due to the heat energy not being transferred out in time.

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