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Positive-pressure-injecting type fully-premixed combustion heating device

A combustion heating and injection technology, applied in the direction of burner, combustion method, combustion type, etc., can solve the problems of high cost, complex mixing system, high total investment and cost of gas heating system, and achieve low cost and volume Small, break through the effect of technology monopoly

Inactive Publication Date: 2013-07-10
TIANJIN URBAN CONSTR COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the ensuing problem is that the cost of the cylindrical heat exchanger is higher than that of the finned heat exchanger, and the mixing system required by the cylindrical full premix burner is more complicated and costly, thus causing the entire gas The total investment and cost of the heating system is higher

Method used

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  • Positive-pressure-injecting type fully-premixed combustion heating device
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  • Positive-pressure-injecting type fully-premixed combustion heating device

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Embodiment

[0030] The present invention is specifically applied in the gas water heater system, the gas water heater mainly provides domestic hot water, and its structural diagram is as follows figure 1 As shown, the main components include a fully premixed burner, a copper finned heat exchanger 7, a gas solenoid valve 2, and a DC fan for fan 1. The heat load of the gas water heater system is 22kW, and the specific structure diagram of the fully premixed burner is shown in image 3 , wherein, 3 is an injection mixer, 4 is a distribution orifice, and 5 is a fire orifice. The interior of the fully premixed burner contains 11 injection mixers 3. The structural dimensions of the injection mixer are shown in Figure 4 , wherein, 9 is an air distribution pipe, 15 is a gas nozzle, 16 is a shrinkage pipe, and 17 is a diffuser pipe; the structure of the gas nozzle 15 is detailed in Figure 5 , the structural form of the fire hole plate 5 is as follows Figure 6 shown. After experimental verifi...

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Abstract

The invention discloses a positive-pressure-injecting type fully-premixed combustion heating device comprising an air supply system, a fuel system, a combustor, a heat exchange system and a smoke exhausting system. The air supply system comprises a fan and an air distributing tube connected with an air supply port of the fan. The fuel system comprises a gas tube and a gas distributing tube connected with the gas tube. A group of gas nozzles are evenly arranged at the end of the gas distributing tube. Annular air inlet ports communicated with the air distributing tube are arranged on the peripheries of the gas nozzles. An injecting type mixer is arranged oppositely to the gas nozzles. A distributing hole plate and a fire hole plate are arranged at the top of the injecting type mixer from bottom to top. The combustor is arranged above the injecting type mixer, and an annular hole is arranged between the side wall of the combustor and the outer contour of the fire hole plate. The positive-pressure-injecting type fully-premixed combustion heating device is compact in structure, and safety control on the whole system is facilitated; gas and air are fully mixed during operation of the heating device, so that emission loads of carbon monoxide and nitric oxide in combustion products are low, and fully-premixed combustion of the gas and the air and low-pollutant emission during gas combustion are realized.

Description

technical field [0001] The invention relates to a system for supplying heat and domestic hot water by using gas, in particular to a positive pressure ejection type fully premixed combustion heating system. Background technique [0002] The gas heating system is a device that uses the heat released during the combustion of gas to heat the heating medium (water). Among them, the combustion method of gas is divided into partial premixed combustion and full premixed combustion. The nitrogen oxides in the partial premixed combustion process are relatively high. As the environmental protection requirements become higher and higher, the partial premixed combustion method is gradually eliminated. The fully premixed combustion method has the advantage of low emission of pollutants. Most of the fully premixed burners are cylindrical, and they are matched with cylindrical heat exchangers. But the ensuing problem is that the cost of the cylindrical heat exchanger is higher than that o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H1/14F23D14/04
Inventor 刘凤国张蕊
Owner TIANJIN URBAN CONSTR COLLEGE
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