Efficient flue heat exchanger
A heat exchanger and flue technology, which is applied in the field of high-efficiency flue heat exchangers, can solve the problems of low heat exchange efficiency and small heat exchange surface, so as to increase the heat exchange surface, improve the heat exchange efficiency, and overcome the heat exchange surface. small effect
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[0022] refer to Figure 1 to Figure 6 , a high-efficiency flue heat exchanger of the present invention includes an exchange core 1, an outer tube 2, a left end box 3, and a right end plate 4, wherein: the exchange core 1 is a rectangular column formed by welding square tube steel In side view projection, the outer wall of the tube of the exchange core 1 is uniformly welded with a number of protruding flat steels called heat dissipation ribs 11, and the inner wall of the tube of the exchange core 1 is uniformly welded with a number of protruding flat steels called endothermic Convex ribs 121; the square tube steel is a tubular shaped steel with a rectangular cross section and hollow thin wall; the flat steel is a strip shaped steel with a flat rectangular cross section;
[0023] The outer tube 2 is, from the inside to the outside, a hollow rectangular columnar pipe made of an inner layer 21 of a refractory heat-insulating material and an outer layer 22 of a thin steel plate; T...
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