Catalytic burner and gas water heater having same

Abstract

The invention discloses a catalytic burner and a gas water heater with the catalytic burner, wherein the catalytic burner comprises: a burner frame, a premix chamber is defined in the burner frame, and the burner frame has a Air inlet and air outlet; catalytic converter, the catalytic converter is arranged on the burner frame and located at the air outlet, the catalytic converter is configured to continue combustion when the temperature exceeds a predetermined temperature and there is gas and air supply. The catalytic burner according to the embodiment of the present invention has a simple structure and reliable connection of various components. Compared with the flaming combustion method in the related art, the catalytic burner adopts catalytic combustion, which can ensure full combustion of gas, and is more energy-saving and environmentally friendly. Reduce the emission of carbon monoxide and nitrogen oxides, and the combustion is moderate, the combustion noise is low, and the safety is higher.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a catalytic burner and a gas water heater with the same. Background technique [0002] The main combustion method adopted by the burner is flaming combustion, that is, the gas and air are not pre-mixed in the combustion device, but the gas and air are sent into the combustion chamber separately, and burned while mixing in it, and the flame produced by combustion It is longer and has a sharp outline. Due to the high activation energy of flaming combustion, the combustion speed is slow and the combustion is incomplete, resulting in a decrease in thermal efficiency. In addition, the gas radiation of the flaming combustion flame is small, and the main heat transfer method is convective heat transfer, which is easy to reduce the utilization rate of energy. [0003] Furthermore, due to differences in the contact between different parts of the combustion and the air, it is easy t...

AI Technical Summary

Problems solved by technology

[0002] The main combustion method adopted by the burner is flaming combustion, that is, the gas and air are not pre-mixed in the combustion device, but the gas and air are sent into the combustion chamber separately, and burned while mixing in it, and the flame produced by combustion It is longer and has a sharp outline. Due to the high activation energy of flaming combustion, the combustion speed is slow and the combustion is incomplete, resulting in a decrease in thermal efficiency

In addition, the gas radiation of the flaming combustion flame is small, and the main heat transfer method is convective heat transfer, which is easy to reduce the utilization rate of energy

[0003] Furthermore, due to differences in the contact between different parts of the combustion and the air, it is easy to cause the completeness and temperature of the combustion to be different. In the high temperature area, due to the high temperature, it is easy to cause the generation of NOx pollutants; Incomplete, easy to produce harmful substances such as carbon monoxide, hydrocarbons and tar

Images