Staged combustion balance control method of combustor, combustor and wall-mounted furnace

Abstract

The invention relates to a staged combustion balance control method of a combustor. The staged combustion balance control method comprises the following steps of: S10, judging whether a fire grate enters a staged combustion mode or a full-stage combustion mode according to a heat load demand; and if judging that the fire grate enters the staged combustion mode, executing S20; S20, acquiring a difference value delta T of accumulated operation time of a group A of nozzles and a group B of nozzles; S30, determining the group of the nozzles working in the staged combustion mode according to the value of delta T; and S40, supplying gas to the nozzles of the working group, and igniting the nozzles of the working group. The invention further provides a combustor and a wall-mounted furnace. The staged combustion balance control method has the beneficial effects that the working group and the rest group of the nozzles in the staged combustion mode are determined according to the difference value of the accumulated operation time of the two groups of nozzles of the fire grate, so that the working frequency between the two groups of nozzles is balanced, the combustion balance is improved, and the effective service life of the wall-mounted furnace is prolonged.

Description

technical field [0001] The invention relates to the technical field of heating equipment, in particular to a burner segmented combustion balance control method, a burner, and a wall-hung boiler. Background technique [0002] A wall-hung boiler is a water heating device that combines indoor heating and domestic water heating. For a gas-fired wall-hung furnace, when it is working, its burner burns gas to release heat, which makes the air in the combustion chamber warm up. Next, the heated air exchanges heat with the heating water through a heat exchanger, thereby heating the heating water. Heating water can be supplied to indoor cooling terminals (such as radiators, floor heating), or can be exchanged with domestic water through a heat exchanger to heat domestic water. [0003] The burners in a wall-hung furnace are usually provided with a fire row, and the fire row is provided with multiple nozzles. In order to better control the burner, reduce the minimum heat load of the...

AI Technical Summary

Problems solved by technology

The disadvantage of this design is that every time the burner is started, it is fixed at the nozzles of group A for ignition, and the nozzles of group A are always in working condition, while the nozzles of group B are only when the nozzles of group A work alone and cannot meet the heat load demand. will start, resulting in the working frequency of group A nozzles being much higher than that of group B nozzles

Correspondingly, the operating frequency of the heat exchanger area corresponding to the nozzles of group A is much higher than that of the heat exchanger area corresponding to the nozzles of group B, and the balance of segmental combustion is poor, which shortens the effective service life of the wall-hung boiler

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