Device capable of improving burning efficiency of gas furnace by controlling oxygen content of exhaust gases from gas furnace and application of device

Abstract

The invention relates to a device capable of improving the burning efficiency of a gas furnace by controlling oxygen content of exhaust gases from the gas furnace and application of the device. The device comprises an oxygen concentration sensor and a control module, wherein the oxygen concentration sensor is arranged at an exhaust outlet of the gas furnace and is used for detecting actual oxygen concentration in the exhaust gases from the gas furnace; the control module is respectively connected with the oxygen concentration sensor and the gas furnace and is used for setting an excess air coefficient in gas inlet of the gas furnace according to the target oxygen concentration of the exhaust gases from the gas furnace and correcting the excess air coefficient in the gas inlet of the gas furnace according to the target oxygen concentration and the actual oxygen concentration. Compared with the prior art, the device disclosed by the invention has the advantages that by setting and regulating the excess air coefficient, the concentration of oxygen in the exhaust gases from the gas furnace is reduced, unnecessary tail smoke exhaust hot loss or incomplete burning hot loss is reduced, the burning efficiency is improved, and eventually the aim of saving energy is achieved.

Description

technical field [0001] The invention relates to a gas furnace combustion optimization technology, in particular to a gas furnace exhaust gas oxygen content control device for improving the gas furnace combustion efficiency and its application. Background technique [0002] During the combustion process of the gas furnace, the method of providing excess oxygen is usually used to ensure the complete combustion of the gas, thereby reducing the carbon monoxide caused by the incomplete combustion of the carbon-containing gas. In the past, the structure of the gas furnace was simple, and it was difficult to ensure sufficient combustion in the gas furnace However, with the upgrading of the manufacturing process of gas furnaces and the popularization of exhaust gas treatment equipment, the method of using excess oxygen has become not only redundant, but also the excess oxygen will absorb more heat. The heated oxygen will be discharged to waste heat energy. In addition, the current s...

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Problems solved by technology

[0002] During the combustion process of the gas furnace, the method of providing excess oxygen is usually used to ensure the complete combustion of the gas, thereby reducing the carbon monoxide caused by the incomplete combustion of the carbon-containing gas. In the past, the structure of the gas furnace was simple, and it was difficult to ensure sufficient combustion in the gas furnace However, with the upgrading of the manufacturing process of gas furnaces and the popularization of exhaust gas treatment equipment, the method of using excess oxygen has become not only redundant, but also the excess oxygen will absorb more heat. The heated oxygen will be discharged to waste heat energy. In addition, the current supply of oxygen is usually the way of supplying air. Since the oxygen content in the air is only about 20%, more heat is absorbed by other components in the air. Therefore, this heat energy Waste appears to be particularly serious

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