Flue gas condensing tube and gas heater

Abstract

The invention provides a flue gas condensing tube and a gas heater, which are used for solving the technical problems that condensed water of a gas heating device in the prior art is accumulated in apipeline or extinguishes flame, a gas heat value utilization rate is low, and a flue gas heat recovery rate is low. The flue gas condensing tube comprises a water container and a fire tube. The gas heater comprises the flue gas condensing tube, a housing, a condensed water inlet, a condensed water outlet, a combustion chamber, a gas tube, a condensed water exhaust device, an exhaust fan, a controller, a condensed water guide-out device and a power supply. With the adoption of the technical scheme adopted by the invention, a high-temperature section condensing tube and a low-temperature sectioncondensing tube are arranged, so that flue gas is prevented from forming condensed water in the high-temperature section condensing tube to extinguish the flame; the low-temperature section condensing tube adopts an S-shaped tube, and is relatively long, so that flue gas recovery efficiency is high, and thermal power of the heater is effectively improved; a bottom condensed water drainage deviceis arranged to exhaust condensed water in real time; and gas is sufficiently combusted through a reasonable excess air coefficient, so that gas is sufficiently combusted, and carbon monoxide is prevented from being generated while the heat value utilization rate is high.

Description

technical field [0001] The invention relates to the field of heating equipment, in particular to a flue gas condensation pipe and a gas heater. Background technique [0002] Heating equipment is widely used in the fields of domestic heating and industrial heating, among which gas heating furnaces are commonly used. Gas heating furnaces are mainly divided into two types, one is to directly use gas to heat hot water, and the other is to transfer heat to hot water in the condensation pipe through the flue gas generated by combustion. In the prior art, the flue gas condenser has the following problems: After the flue gas condenser cools down to below 100°C, the condensed water generated will flow back to extinguish the flame or accumulate in the pipe to affect the heat transfer effect; the heat transfer efficiency is low As a result, a large amount of heat is taken away by the flue gas and wasted; the gas is not fully burned, resulting in the generation of carbon monoxide and l...

AI Technical Summary

Problems solved by technology

In the prior art, the flue gas condenser has the following problems: After the flue gas condenser cools down to below 100°C, the condensed water generated will flow back to extinguish the flame or accumulate in the pipe to affect the heat transfer effect; the heat transfer efficiency is low A large amount of heat is taken away by the flue gas and wasted; the gas is not fully burned, resulting in the generation of carbon monoxide and low utilization of the calorific value of the gas

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