Fuel gas hot water device

Abstract

The invention relates to a fuel gas hot water device which comprises a fan, a heat exchanger and a fuel gas inlet pipe, wherein the heat exchanger is internally provided with combustion chambers, and an air outlet of the fan and a fuel gas outlet of the fuel gas inlet pipe are communicated with the combustion chambers. The main technical characteristics of the fuel gas hot water are as follows: the combustion chambers comprise a large combustion chamber and a small combustion chamber, wherein the volume of the small combustion chamber is 4%-30% of that of the large combustion chamber, and the large combustion chamber is communicated with the small combustion chamber; and the fuel gas inlet pipe comprises a primary fuel pipe and a secondary fuel pipe, a primary fuel gas outlet of the primary fuel pipe and the air outlet of the fan are communicated with the small combustion chamber, and a secondary fuel gas outlet of the secondary fuel pipe is communicated with the large combustion chamber. The fuel gas hot water device provided by the invention has the advantages of effectively enabling combustion of fuel gas to be sufficient, effectively improving heat efficiency, effectively reducing generation of NOX, etc.

Description

technical field [0001] This patent relates to a gas water heating device, in particular to a household gas water heating device. Background technique [0002] In the prior art, household gas water heaters usually use a flame combustion method. While burning to generate heat, visible flame light is released. Part of the chemical energy of the gas is converted into visible light energy, and visible light cannot heat water, which is a waste of gas. part of the chemical energy; flaming combustion produces a torch or a flame, and the high-temperature area is concentrated in the flame or torch, and the high temperature is too high, and it is easy to produce NO X At the same time, the combustion temperature field is not uniform, resulting in insufficient combustion, which affects the improvement of the thermal efficiency of the gas water heating device, and easily produces NO X and other defects. In order to overcome these defects, the gas hot water device has been improved. Co...

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Problems solved by technology

[0002] In the prior art, household gas water heaters usually use a flame combustion method. While burning to generate heat, visible flame light is released. Part of the chemical energy of the gas is converted into visible light energy, and visible light cannot heat water, which is a waste of gas. part of the chemical energy; flaming combustion produces a torch or a flame, and the high-temperature area is concentrated in the flame or torch, and the high temperature is too high, and it is easy to produce NO X At the same time, the combustion temperature field is not uniform, resulting in insufficient combustion, which affects the improvement of the thermal efficiency of the gas water heating device, and easily produces NO X and other defects

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