A high-efficiency low-nitrogen condensation furnace

Abstract

The invention provides a high-efficiency low-nitrogen condensing furnace, which includes a furnace body, a low-nitrogen burner, and a control system. The furnace body includes a combustion chamber, a reheating chamber, and a condensation chamber; The gas analyzer is set on the flue gas pipeline to detect the oxygen content value of the gas in the flue gas pipeline. The gas analyzer is connected to the controller to transmit the oxygen content value to the controller in the form of an analog signal for analysis and calculation. Frequency conversion The fan is connected to the low-nitrogen burner through the air pipeline, the fuel pump is connected to the low-nitrogen combustion chamber through the gas pipeline, and a gas proportional regulating valve is installed, and the controller controls the frequency conversion fan based on the oxygen content value of the gas in the flue gas pipeline analyzed and calculated Speed ​​and gas proportional regulating valve opening. Through the reasonable improvement of the structure and the reasonable control of the fuel, the condensing furnace can effectively improve the heat utilization efficiency and achieve the effects of energy saving and environmental protection.

Description

technical field [0001] The invention mainly relates to the related technical field of low-nitrogen condensing furnaces, in particular to a high-efficiency low-nitrogen condensing furnace. Background technique [0002] The thermal efficiency of low nitrogen condensing furnace is the most important index to evaluate its performance. The factors affecting the thermal efficiency of low-nitrogen condensing furnace are mainly reflected in the structural design of the condensing furnace and the combustion efficiency of fuel. [0003] In the prior art, due to the limitation of the structure of the condensing furnace, the heat utilization efficiency of the condensing furnace itself is low. Moreover, in some disclosed condensing furnace structures, in order to increase the utilization efficiency, the internal structure is designed to be extremely complicated, which makes the cost of the condensing furnace in the process of processing and assembling relatively high. The oxygen conten...

AI Technical Summary

Problems solved by technology

The fuel is fixed, the air volume increases: the oxygen content of the flue gas will increase, and the excess air will absorb a certain amount of energy and be discharged into the air through the chimney, resulting in a waste of energy

The amount of air is constant and the amount of fuel is increased: the oxygen content of the flue gas will decrease. Due to the incomplete combustion of the fuel, it will cause waste of fuel energy and will also produce toxic gases discharged into the air, causing environmental pollution.

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