Pin plate fin water pipe type general condensing boiler

Abstract

The invention discloses a pin plate fin water pipe type general condensing boiler, which comprises a shell, wherein the lower part of the shell is provided with a turning smoke chamber; a condensate neutralizing treatment device with a condensate outlet pipe is arranged below the turning smoke chamber; an inter-furnace heat exchange space is formed in the shell; a full premixing flameless burner is arranged on an upper top plate of the upper part of the furnace body; more than one pin plate fin water pipe type heat transfer element for general convection and condensation heat transfer is arranged on the lower part of the inter-furnace heat exchange space; a flue gas transverse washing pin performs convection heat exchange and condensation heat transfer; the heat is transferred to water working medium in a pin plate through heat conduction; a lower outlet of the pin plate fin water pipe type heat transfer element is communicated with the top of the turning smoke chamber; and a cavity between an inner wall of the shell and an outer wall surface of the inter-furnace heat exchange space, a cavity between the top of the turning smoke chamber and a non-conducted part of the inter-furnace heat exchange space, and a cavity formed at the periphery of the full premixing flameless burner form a water jacket. The boiler of the invention is favorable for giving full play of the advantage of high radiation and heat exchange capacities of the full premixing burner, and meanwhile, the problem that the heat exchange element has high machining and manufacturing difficulty is solved.

Description

technical field [0001] The invention belongs to the technical field of thermal energy engineering, in particular to a pin-plate-fin water-tube integral condensing boiler. Background technique [0002] The development of new natural gas utilization thermal energy power equipment needs to improve the efficiency of natural gas utilization on the basis of current technology, mainly from the following two aspects: on the one hand, to further improve the combustion efficiency of natural gas; on the other hand, the exhaust gas temperature of current natural gas utilization equipment is too high. High, it needs to be further reduced to improve the conversion efficiency of the equipment. At present, household hot water heating dual-purpose water heaters / boilers mostly use atmospheric or diffusion combustion devices, which have high excess air coefficient, low combustion efficiency, and high NOx emissions; the exhaust gas temperature of gas heating hot water boilers is generally 150-1...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a pin-plate-fin water-tube integral condensing boiler, which is beneficial to take advantage of the strong radiation heat transfer capability of the full premix burner, and solves the problems in the prior art at the same time. Difficult problems in processing and manufacturing heat exchange elements

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