Efficient low-nitrogen premixing spiral integrated generator

Abstract

The invention discloses an efficient low-nitrogen premixing spiral integrated generator. The efficient low-nitrogen premixing spiral integrated generator comprises a positioning block and a metal burner; one end of the surface of the positioning block is provided with an ignition pin, and the other end of the surface of the positioning block is provided with a flame detection pin; and a first bottom frame and a second bottom frame are clamped to the two sides of the positioning block. The efficient low-nitrogen premixing spiral integrated generator is reasonable in design and convenient to use, by arranging the metal burner and a heat exchange strip, the heat exchange strip can be conveniently and spirally welded to the surface of the metal burner, the spiral structure is adopted, the heatexchange area of the heat exchange strip is increased, and the heat exchange strip can conveniently transfer heat to the metal burner; and by arranging a premixing device, a gas injection pipe, the ignition pin and a burning pipe, the premixing device can conveniently mix air and natural gas proportionally, the mixture of the air and the gas enters the burning pipe through the gas injection pipe,the ignition effect is achieved through the ignition pin, and burning is facilitated by a burning opening in the surface of the burning pipe. The efficient low-nitrogen premixing spiral integrated generator is easy and convenient to use and suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of heat pump devices, in particular to a high-efficiency low-nitrogen premixed spiral integrated generator. Background technique [0002] The generator uses a working heat source (such as water vapor, hot water and gas, etc.) to heat the solution with a certain concentration delivered by the solution pump from the absorber in the generator, and evaporates most of the low-boiling point refrigerant in the solution. High-temperature air combustion has notable characteristics such as low-temperature smoke exhaust, high heat recovery rate (significant energy saving), low-oxygen combustion, and greatly reduced NOX generation (emission reduction). However, paired regenerative burners are used in conjunction with regenerative boilers, and cannot be used for low-nitrogen transformation of ordinary gas-fired boilers. The staged combustion technology is to carry out mixed combustion of fuel and air in stages. The prim...

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Problems solved by technology

It is not very difficult to realize the flue gas recirculation burner in terms of structure, but the system is complex and the workload of professional operation and maintenance is relatively large. Some generators mostly use annular sheet-shaped heat transfer fins for heat conduction, and use heat transfer fins equidistantly distributed on the surface of the burner to achieve uniform heat transfer effect, and the heat transfer area is large, but this type of heat transfer When the fins are installed on the surface of the burner, they not only need to be distributed at equal intervals, but also the ring-shaped heat transfer fins need to be processed one by one. The accuracy of the inner diameter of the heat transfer fins is relatively high. The working time is reduced and the production cost is high, which is not conducive to large-scale mass production

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