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Completely-premixed gas burner

A gas burner, pre-mixed technology, applied in the direction of gas fuel burner, burner, combustion method, etc., can solve the problems of low combustion flame temperature, incomplete combustion, complex control system, etc., and achieve low pollutant emissions , the effect of complete combustion

Inactive Publication Date: 2012-03-14
SHANGHAI HESEN ELECTRO MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The burners of existing domestic gas water heaters and gas dual-purpose furnaces are generally designed with a partial premixed combustion method. Compared with the full premixed burner combustion method, this partial premixed burner has some disadvantages: first, the gas is in the Only part of the air is mixed before combustion, and secondary air is needed for supplementation during combustion, so the combustion is incomplete; secondly, its air coefficient is relatively large (generally 1.3 to 1.5), and the temperature of the combustion flame is low; in addition, due to the chemical incomplete combustion of the gas , the content of harmful gases such as CO and NOx produced is relatively high, which does not meet the requirements of environmental protection
At present, the premix burner is generally cylindrical or semicircular, or the mixer adopts a blast mixer, and the pressure loss is relatively large.
In addition, the control system is more complex

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] Such as Figure 1-4 As shown, a completely premixed gas burner includes a nozzle 1, an injector 2, a distribution chamber 3, a splitter plate 4 and a combustion fire orifice 5, and the nozzle 1 is set on the injector 2 One end, the other end of the injector 2 is connected to the distribution chamber 3, the distribution plate 4 is arranged on the distribution chamber 3, the distribution hole 6 is provided on the lower surface of the distribution plate 4, and the burner orifice plate 5 is arranged on the distribution chamber 4 Above, the burner orifice 5 is provided with a fire hole 7, the gas is sprayed into the injector 2 from the nozzle 1, and mixed evenly with the boosted air injected by the injector 2 in the distribution chamber 3, and the gas in the distribution chamber 3 Excessive air, the excess air coefficient can reach a>1, no secondary air is needed during combustion. The mixture of air and gas is fully mixed in the mixing tube in the injector 2, and then ente...

Embodiment 2

[0029] A completely premixed gas burner, the burner includes a nozzle, an injector, a distribution chamber, a splitter plate and a combustion fire orifice, the nozzle is set at one end of the injector, and the other end of the injector is connected to the distribution chamber , the splitter plate is set on the distribution chamber, the burner orifice plate is set above the splitter plate, the gas is injected into the ejector from the nozzle, and mixed with the boosted air injected by the ejector in the distribution chamber Evenly, the air in the distribution chamber is excess, and the excess air coefficient can reach a>1, and no secondary air is needed during combustion. The mixture of air and gas is fully mixed in the mixing tube in the injector, and then enters the distribution chamber at the lower part of the combustion chamber for air flow organization, so that the pressure distribution of the mixed gas is relatively uniform. Finally, the air flow passes through the splitt...

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Abstract

The invention relates to a completely-premixed gas burner, which comprises a nozzle, an ejector, a distribution chamber, a shunting plate and a burning fire-hole plate, wherein the nozzle is arranged on one end of the ejector, and the other end of the ejector is connected with the distribution chamber; the shunting plate is arranged on the distribution chamber; the burning fire-hole plate is arranged above the shunting plate; gas is injected into the ejector via the nozzle and is evenly mixed with air ejected and boosted by the ejector in the distribution chamber; and the mixture flows into the burning fire-hole plate after being shunted by the shunting plate. Compared with the prior art, the completely-premixed gas burner has the advantages of complete burning, low pollutant discharge amount in smoke and the like.

Description

technical field [0001] The invention relates to a burner, in particular to a completely premixed gas burner. Background technique [0002] Burners are collectively referred to as devices that allow fuel and air to be sprayed and mixed (or mixed and sprayed) for combustion in a certain way. Burners are divided into industrial burners, burners, civil burners, and special burners according to types and application fields. [0003] The burners of existing domestic gas water heaters and gas dual-purpose furnaces are generally designed with a partial premixed combustion method. Compared with the full premixed burner combustion method, this partial premixed burner has some disadvantages: first, the gas is in the Only part of the air is mixed before combustion, and secondary air is needed for supplementation during combustion, so the combustion is incomplete; secondly, its air coefficient is relatively large (generally 1.3 to 1.5), and the temperature of the combustion flame is low;...

Claims

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Application Information

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IPC IPC(8): F23D14/04F23D14/46
Inventor 杜一鸣尤学一王启刘凤国
Owner SHANGHAI HESEN ELECTRO MACHINERY
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